Pay attention to the suitability of choosing ppe

Window hardware classification

A sliding window hardware accessories

The guide rail of aluminum alloy or plastic sliding window is directly formed on the window frame profile, and the pulley system is fixed at the bottom of the window sash. The sliding of the sliding window is not only dependent on the quality of the pulley system, but also related to the straightness and accuracy of the profile and the precision of the window frame installation. Dust on the track and pulley wear will also affect the sliding window switch function. The lock of the sliding window is generally a bolt type lock, and this kind of lock may fail due to a low installation accuracy, dust accumulation and the like. The handle of the sliding window is usually replaced by the switch part of the plug-type lock, but there are also high-grade sliding windows to make the sash profile an arc type and a pull-up handle.

Two ordinary casement window hardware accessories

One of the basic fittings of the casement window is the hinge. Due to the one-way opening nature of the hinge, the hinge is always installed in the opening direction, ie, the hinge of the inner window is installed indoors, and the hinge of the outer window is installed outdoors. In order to prevent the hinge from affecting the sealing of the window, the hinge of the metal window is usually welded outside the window profile. The lock of the open window is a rotating card lock, and the handle is usually combined with the lock. Ordinary internal window locks can be simple bolts. The disadvantage of the latch is that there is no compression function of the rotary latch. The handles of the inner windows are independent and have no relation with other parts. The stopper is an essential part of the open window to prevent the wind from blowing the sash and causing a collision. However, the fixed plane formed by the two hinges and the stoppers at three points is limited in strength, and the stoppers of relatively good quality are made of copper for the purpose of preventing rust.

Three inward sliding casement hardware accessories

The concept of introversion inside the casement window is a form that can both hang inside and open inside. But this is far more than a special way of opening windows. In fact, it is a combination of various window control functions. First of all, when the window is introverted, the purpose is to change the air. The top scissor connector acts as a stopper. When the inner plane is open, the top scissor connection is again a hinge. The bottom hinge is also an axis for inward tilting. The purpose of the inner peace is to clearly observe the scenery outside the window, and more importantly, it is easy to clean the glass. The design of windows does not consider cleaning glass as the reason why there are few clean bright windows in low-rise residential buildings in China. It can be said that the introversion casement window is a comprehensive satisfaction for people. The hardware of the inward tilt casement window includes the top shear connector, the upper corner connector, the lock, the handle, the connecting rod, the multi-point lock, the lower corner connector and the bottom axis of the inclining window, the bottom hinge and the inner bottom shaft. This kind of hardware is suitable for wood, aluminum alloy and plastic steel windows. How to fix the connecting rod on the sash? There are two solutions. The first is to design two sets of connecting rods, one set for fixing and the other set for interlocking lock points. The second is to pre-design the sliding groove on the window frame profile. The second scheme is superior to the first scheme in terms of service life and maintenance-free performance.

Four glass curtain wall window hardware accessories

The combination of glass walls and windows is a difficult problem. The internationally advanced curtain wall system can create a glass-like curtain wall unit with inward-inside-opening windows to achieve the airtightness, watertightness, and wind pressure rating of the entire curtain wall. The technical level and غير مجاز مي باشدt of doing so are high. At present, few companies in the country can reach this level.

Since the load-bearing structure of the glass curtain wall is generally internal, opening the window is the easiest window opening solution. However, if the hinge is used, the exposed hinge will destroy the integrity of the glass curtain wall, so there are four-bar accessories. The four-bar linkage is a substitute for the hinge, which is to use the principle of variable area under the condition that the quadrilateral side length is constant to achieve the goal of opening the window. The fixing of the four-bar linkage is on the side of the sash and the window frame. When the window is closed, the four-bar linkage is completely hidden in the window frame, which fundamentally solves the problem of hinge exposure. The only feature is the phenomenon determined by the working principle of the four-bar linkage, that is, when the window sash is opened, there will be a clear settlement of the sash center of gravity. This settlement can well prevent the wind from closing the sash, but it brings inconvenience to the installation and use of the window opener. If the form is large, the four-bar linkage will bear the weight of the sash for a long period of time, resulting in a certain decrease, which in turn causes the sash to close.

The use of multi-point locks is to increase the wind pressure resistance of the window. A plurality of cylindrical lock points are connected by a connecting rod on the sash. Under the operation of rotating the handle, the lock point slides into the lock body fixed on the window frame. Through the corner connector, all four sides of the window can be locked with one, two or more locking points. Multipoint locks have completely changed the traditional system of locking windows. This link locking solution is also used to increase the door's security rating.

Five flip window hardware accessories

In the conventional flip window, because one half of the window sash is opened inside and the other half of the window sash is outside, the sealing of the window is difficult to achieve. To achieve the same sealing effect as purely open or open windows, the غير مجاز مي باشدt of flipping the windows is relatively high. The hardware components of ordinary flip windows are mainly two rotary shafts, and are equipped with corresponding locks and handles. Internationally, there is a comprehensive hardware accessory that can be flipped 360 degrees in order to achieve a good sealing effect while also facilitating window cleaning.

Six window openers

1. Manual window opener

The purpose of the manual window opener is to open a higher ventilation window through certain devices. According to the principle of the thermal effect of air, hot air and light harmful gases that should be excluded can be effectively eliminated only through high-position windows. The manual window opener generally includes five parts: an open window execution member (such as a scissor-type window opener), a corner connector, an operating member, a connecting rod, and a decorative cover plate. The window-opening actuator determines the width of the window, the weight of the window lifter, and the locking function. The corner connector is a transmission component whose deformation determines the ability of the window regulator to adapt to different window types and different installation conditions. The operating part can be in the form of a handle or a rocker. Move-in operation components are simple and غير مجاز مي باشدt-effective. The power output of the joystick-type operating parts is even and not easily damaged, and the machining accuracy is high and the غير مجاز مي باشدt is high. The manual window opener is suitable for the lower hanging inner window and the upper hanging outer window. Suspended windows must be equipped with special external accessories. From the analysis of the force of the window opener, the hinge is located at the lower part of the lower suspension and the internal window is more labor-saving. The hinge is located on the top of the upper hanging window is more difficult, in particular, we must pay attention to the use of four-bar linkage must be cautious, because the four-bar linkage in the window opening will make the center of gravity of the form a larger settlement, if the form To a certain degree of weight, the power of the window opener may not be enough to enhance the form to close the window.

2. Electric window opener

The simplest electric window opener is a mechanical window opening actuator with a drive motor and a switch. There are also rack and pinion window openers and chain openers. However, from the perspective of product stability and service life, the window openers need to be dust-proof, moisture-proof and even waterproof. Dust accumulates will cause the window opener to wear out, moisture will cause the window opener to rust, and the water will short circuit the window opener. Condensation caused by changes in indoor relative humidity is often a result of poor thermal insulation of the window or changes in the indoor environment, especially in greenhouse construction. A thorough and thorough analysis and understanding of the environmental conditions used by the window opener is crucial to the choice of window drive. The internationally closed dust-proof, moisture-proof and waterproof window opener has an internal screw type window opener. The thrust of this window opener can reach 1000 Newtons, noise floor, and low power consumption. The selection of the window opener must also pay attention to its ease of installation, because the installation conditions on the construction site may be very limited.

There are currently two types of automatic window opener control systems. Greenhouse control system is based on the measured temperature, humidity, sunlight, the intensity of the wind, the value of the degree of rain, and compared with the preset value, so as to open the window and close the window control system.

The automatic smoke exhaust and heat removal system is a newly developed concept of fire protection in the world. That is, when smoke and heat are generated in a fire, the windows used for exhaust heat are automatically opened. Due to the increasingly comprehensive fire protection requirements for modern building materials, the fire resistance of the material is precisely defined in terms of flame retardancy. Therefore, in the event of a fire, smoke and harmful substances contained in it will cause more direct injury to people. Or that harmful smoke hinders active life-saving behavior and passive escape behavior. From the study of the development process of fire, it can be seen that, at the beginning of a fire, a large amount of smoke and heat energy are generated first. Smoke rises due to heat and accumulates on the upper floors of buildings. If smoke and heat cannot be expelled quickly, the temperature inside the building will rise quickly and the fire will increase. In addition, when a fire breaks out, a large amount of oxygen is consumed inside the building, causing a strong negative pressure in the building and causing the building to collapse. The fact is that a fire destroyed a building. In addition to the explosive materials in the building, it usually starts from the top and collapses inwards. The design, construction, and use of automatic smoke and heat rejection systems are linked to curtain wall companies or window production companies, weak electricity, and fire control systems. The complexity of the project is high, and the national authorities should provide qualifications, experience, and after-sales services to the manufacturers who provide the systems. Such as comprehensive evaluation and supervision to ensure the quality of the project. At present, some high-end buildings in China have used such systems.

Window hardware use

Perhaps after the aluminum alloy was used to manufacture the window, people developed a sliding window. The sliding window has no problem with the stopper at all because the fixed state of the sash of the sliding window when opening and closing is substantially the same. One drawback of the sliding window is that it must have at least one fixed fan, which greatly reduces the window area: Another fatal weakness is the inability to meet hermetic and watertight requirements. Sliding window sash fixed point is the upper and lower two guides, so its wind pressure strength is also very limited. Modern buildings are increasingly demanding for energy-saving and other functions. They have strict requirements for the sealing and heat insulation of windows, airtightness and watertightness, sound insulation and wind resistance, and even the level of theft protection. In order to achieve a variety of integrated requirements, the inward-turning window, or European window, was created.

The window type on the modern glass curtain wall building is related to the fixing method of the window frame on the curtain wall. Due to the high requirements for airtightness, watertightness and wind resistance of glass curtain walls, accessories for curtain wall windows have been developed relatively independently as required.

The windows of modern buildings are not limited to human-accessible levels. Starting from the requirements of ventilation and heat removal, the height of the windows is an important factor in determining the efficiency of ventilation and heat exhaustion, and people have invented various types of window-openers.

Hardware is an indispensable part of the furniture. With the development of the furniture market, the hardware market has become more mature. At the same time, a number of excellent home hardware companies have emerged. Chinese hardware occupation of the world hardware market is just around the corner.

In the current international competitive environment, relying solely on its original advantages can no longer meet the compression غير مجاز مي باشدts in modern trading processes and the need to maximize profits, and accelerate the development of e-commerce to become a domestic plastic hardware industry to meet the challenges of economic globalization and grasp the development initiative. Right and the inevitable choice for improving international competitiveness, e-commerce in the 21st century will surely become the main driving force for the growth of the trade in hardware and plastics machinery and mold industry.

China's modern machinery and plastics metal mold market is very active. Plastics and hardware products will become new consumer hotspots and new economic growth points. However, the cruel market status and competitive situation have forced related companies in the hardware and plastics industry chain to the edge of the cliff. In the face of pressure from the international market, domestic hardware and plastics companies have to overcome the unfavorable factors such as high raw material prices, increasingly fierce market competition, and excessive production capacity of some products, actively change business models, and use modern networks to highlight the functions of intangible markets. Realizing the tangible market and the intangible market at the same time, broadening the sales channels, tapping the potential of the company, and actively exploring the international market can enable the company to truly emerge from the predicament.

With the rapid development of the Internet, the e-commerce industry platform model has exhibited tremendous magnetic field explosiveness. The producer-supplier-consumer industry chain is closely linked, and the entire supply chain is a process from creation of value to realization of value, and the full integration of producers and consumers. At the same time, using the Internet to form an intangible market with wide coverage and convenient transactions, and to achieve a seamless integration of the physical market and the intangible market, allowing the domestic mold machinery, hardware and plastics industry to interface with technology in the same industry worldwide, and optimize the configuration of the mold machinery, hardware and plastics industry. Supply chain and value chain help companies to complete the industry upgrade, so that it is more conducive to enterprise upgrade and transformation.

Electric tools are the most widely used hardware tools in the society. Because of their light weight, portable use, high production efficiency, and low energy consumption, power tools have become an indispensable tool in the family life. With the globalization of the economy, the power tool market has been developing rapidly. According to reports, in recent years, the power tool industry has shown rapid development. In the domestic power tool market, domestic sales of power tools have accounted for 90% of total sales, while various imported brand products only account for 10% of the market. In the foreign power tool market, the proportion of manufacturing in China continues to expand, and China has become the world's leading exporter of power tools and global power tool production bases. The industry has great potential for development.

China's high-tech, functional and demanding industrial power tools still have a large potential market in Europe and the United States. Currently, industrial countries in economically developed regions, such as Germany, the United Kingdom, the Netherlands, and France in the European region, the United States and Canada in the North American region, and Japan and other countries in the Asian region, use electric tools in homework and are common, accounting for the total output. About 50% to 70% of China's electric power tool products have a large share in the domestic electric tool product market in the above-mentioned countries and regions, but the industrial electric power tools produced in China do not export a large amount to these regions. Professional power tools for industrial use have high technical content, strict safety and electromagnetic compatibility requirements, and have delineation of function, work efficiency, reliability, and durability. The price is several times that of similar DIY tools, and even 10 times or more. Professional power tools have internationally known brands such as hammers from Helde, Bosch, and Mai Taibao, drills from Black & Decker, electric tools from Makita and other woodworking tools, and circular saws from the Century.

The analysis pointed out that the export volume of electric tools in China has accounted for 85% of the sales of electric tools in the world, but the export amount only accounts for about 40% of the total sales. The main reason is that China's electric tool manufacturing industry has not yet established its own brand in the international market. Especially for industrial professional power tools, the use of OEMs is generally adopted. Coupled with the non-standard market competition among domestic companies, export prices are getting lower and lower. For example, in 2001, the uniform price of electric tools was US.72 per unit, while the average price of foreign-funded enterprises was US.74 per unit, and the average price of imported electric tools was US.94 per unit. Therefore, after improving our product technology level and developing industrial power tool products, our country will be able to expand the market and create greater economic benefits after it is established from an internationally renowned brand.

Developing countries and economically underdeveloped countries are potential target markets for domestic DIY power tools. Electric tools are relatively rare in the economically underdeveloped or relatively backward third-world countries. With the development of the economy and the improvement of the material and cultural level, household daily-use power tools will gradually increase. For example, in the Asian region, the market share of electric tools sold by China to Asian countries has been increasing year by year. Compared with 2002, it has increased by 2.6 percentage points. Therefore, the latent market for household electric tools in developing countries and economically underdeveloped countries is very large.

According to analysis, China's power tool market is maturing, brand awareness and brand effect will be highlighted. In the next few years, the share of domestic electric tools will further increase. With the constant increase in demand for electric tools, the production and operation of relevant companies in China will be promoted in a favorable direction. The industry outlook is expected to be promising.

However, despite the rapid development of China's power tool industry, it also faces the following challenges:

1. Compared with the high level in the international market, the production technology and management level of our country's power tools are low, and the products have a single function. In order to become bigger and stronger in the international market competition, it is not necessary to expand the market share in the high-end market. The competitiveness of the international market for products needs to be further improved.

2. Due to the low barriers to entry in the electric tool industry in China, investment in independent innovation, product research and development, brand cultivation, etc. is relatively small. The recognition of electric tools with independent intellectual property rights in the international market is far from enough. International marketing The network has not yet been effectively established. Independent innovation capabilities and brand awareness must be further strengthened.

3. The foreign trade export is facing a severe situation, the main raw materials for producing electric tools such as steel (including silicon steel sheet), copper (enameled wire and other copper products), aluminum alloys, magnesium alloys, and engineering plastics, etc., have high prices, making the production غير مجاز مي باشدt of electric tools Continue to climb and directly affect the export efficiency of products. With the application of industrial ceramics, high-performance soft magnets, and new plastic materials in new products, it is expected that the application of low-carbon, environmentally friendly new materials will increase in the future.

4, the continuous appreciation of the ***, a certain impact on the export of electric tools, China's electric tool industry to achieve new achievements in foreign trade exports, there are still many difficulties to be overcome.

5. The status of China’s export of power tools is increasingly being challenged by developing countries. The level of technology and management in developing countries has been greatly improved, and the labor and raw material غير مجاز مي باشدts are low. This has brought great power to China's power tool industry. With great competitive pressure, international competition has become increasingly fierce.

6. The international and domestic markets are more discerning about the quality and brand of electric tools. Whether they are distributors of electric tools or direct users, they attach great importance to the quality and brand of electric tools. Therefore, the inclination of the market for good quality, good brand electric tools has increased. This is a progress, indicating that the power tool market is maturing. Because of this, the brand awareness and brand effect of the domestic power tool market have become more prominent, and many power tool distributors, especially power tool distributors with a certain strength and scale, have shown high enthusiasm for the distribution of brand power tools. .

Recently, the European Commission's non-food rapid warning system (rapex) issued consumer warnings on hardware and electric power tools products produced in China. Domestic hardware tools manufacturers and exporters should attach great importance to this.

Countries around the world have increasingly stricter requirements for power tools on their markets. The European Union has developed a special 60745-1 standard for hardware power tools. Its purpose is to reduce or avoid the technical specifications of power tools that enter the European market. Electric tools may cause harm to consumers.

Europe also introduced the Electrical Appliance Certification Act. All the specifications and series of power tool products exported by relevant companies to the European Union must be certified before the export and passed the EU Electric Appliances Directive. The products that are about to expire should be applied for certification in a timely manner.

In addition, companies need to make preparations in advance during the testing of power tools. Enterprises need to accumulate experience in response, and the products involved will be adjusted accordingly according to EU regulations, otherwise they will be eliminated by the market.

1, independent information management

Manage all user information, freely add/modify/delete user information.

Advantages: It is very useful for users to manage user rights. Users can freely authorize and allow or prevent certain people from entering.

This feature is more practical for users who have nannies or tenants at home. When nannies or tenants move away, their fingerprints can be immediately deleted so that they cannot open the door without the right to use. On the contrary, if there are new nannies and tenants, they can register their fingerprints at any time so that they can freely open the door.

In general, the biggest benefit of this feature is that you don’t have to worry about the nanny or the tenant copying the keys, reducing the insecurity at home.

Disadvantages: It takes more than one step to input and delete fingerprints, the procedure is cumbersome and the convenience is not enough. However, the complicated operation is also for the sake of safety. For the time being, it is also acceptable. If it is possible to improve the safety factor while simplifying the operating procedures, it would be better.

2, voice operation tips

In the process of use, the voice function is activated, and the user is guided to open the door throughout the entire process, so that the user knows whether the operation of each step is correct and prompts the user for the next operation.

Advantages: Make operations easier and easier to understand.

This function is very useful for the elderly or children, so that they can be handy during the operation, reducing their psychological exclusion of high-tech products because they do not understand the operation.

Disadvantages: Since voice prompts are recorded in a unified way, their voices are too mechanized and their mobility and intimacy are not strong. In addition, the general voice operation prompts only Chinese and English. This function is ineffective for the elderly and children who do not understand the two languages.

3, flood alarm function

In the event of abnormal opening and external violence, or the door lock slightly deviated from the door, a strong warning is immediately issued to attract attention, like a car alarm.

Advantages: Strong alarm sound, can attract the attention of people around, effectively prevent the thieves from illegal acts. For more complex users in the middle environment, this function is more useful.

Disadvantages: The alarm system cannot be temporarily connected to the district or police security system, and cannot be automatically alarmed. This function needs to be improved for the more demanding security units. In addition, not every lock has this function and requires user customization.

4, virtual password

You can add more than one or more groups of garbled characters before and after the correct password, as long as there are consecutive correct passwords in this group of data, you can open the fingerprint lock.

Advantages: Prevent password hacking

Disadvantages: The use of this feature is one of the most unusable features discussed in the fingerprint lock community. Since the user can use the correct password + garbled code to open the door, the thief must be remembering the password group that the user just used, and of course the door can be opened. Unless the virtual password has the same password + garbled characters, the second function cannot be used.

5, button remote unlock

With the remote control button, the opening of the door lock is controlled within a certain distance. Same as the auto unlock function.

Advantages: higher intelligence, better meet the needs of different groups of people.

For example, in the company, the company boss can lock the door of the office, when the subordinates knock on the door, do not have to go to the door to open the door, directly press the door open button to open the door, but also to prevent the looming visitors. If it is a mechanical lock, in order to facilitate the entry of employees, the boss generally does not lock the door, which is also convenient for those who rashly enter. If you lock the door, it is inconvenient for the boss to get up and open the door when the employee wants to report the work. This work just solves this problem.

Disadvantages: Can not be connected to the Internet, can only control the door lock through a control button in a certain range.

6, remote control open the door

This function is connected to the Internet, and the door lock can be controlled by the mobile phone anywhere in the world;

Advantages: further enhance the intelligence of the fingerprint lock

When parents or relatives and friends visit and they are not at home, they can use this function to remotely lock the door and let them enter the door.

Disadvantages: When no one is at home, if you accidentally touch this feature to open the door, and you do not pay attention, the consequences are disastrous.