A shock-resistant and anti-loosening nut locking structure for a roller shutter door motor

Abstract

This utility model discloses a shock-resistant and anti-loosening nut locking structure for a roller shutter door motor, solving the problem of easy loosening of existing structures under vibration. The structure consists of a mounting plate, a roller shutter door motor, bolts, nuts, washers, and locking components. The motor connecting foot is connected to the mounting plate via bolts and nuts. The washer is placed between the nut and the connecting foot and fitted onto the bolt. The connecting ring of the locking component is embedded in the washer's groove, and the elastic element is connected to the connecting ring, with its supporting part abutting against the inner wall of the connecting foot's through hole. The elastic element can deform to maintain pressure and prevent loosening, and the elastic connection part enhances elasticity and cushioning. The connecting ring is coated with DLC, and the washer is made of modified polytetrafluoroethylene composite material with an embedded mesh plate, making it wear-resistant, corrosion-resistant, and stable. This structure is simple, easy to install and disassemble, and compared to a double-nut structure, it reduces installation difficulty and workload, improves efficiency, reduces costs, effectively resists vibration and impact, ensures stable motor transmission, avoids many problems, and offers significant benefits.

Description

Technical Field

[0001] This utility model relates to the field of roller shutter door motor technology, specifically to a shock-resistant and anti-loosening nut locking structure for roller shutter door motors. Background Technology

[0002] Roller shutters, as indispensable door and window facilities in many places such as commercial shops, garages, and warehouses, have been widely used in the construction industry due to their outstanding advantages such as convenient opening, high efficiency, and space saving. The roller shutter motor, as the core power component that drives the roller shutter to open and close smoothly, directly determines whether the roller shutter can operate normally, thus affecting the daily use and safety of the entire premises.

[0003] With the booming development of the construction industry and the increasing demands for safety and convenience, the number of roller shutter door motors installed has been steadily growing, and their application scenarios are becoming increasingly diverse. Today, they are not only commonly found in conventional indoor environments, but also frequently appear in places with special operating conditions such as vibration and impact, such as near major traffic arteries or buildings where large machinery operates nearby. In these special environments, roller shutter door motors face more severe challenges, placing higher demands on their stability and reliability.

[0004] During the daily operation of roller shutter door motors, the motor itself generates vibrations, and the opening and closing of the roller shutter door introduces dynamic loads. This causes traditional ordinary nut locking structures to gradually reveal their inability to meet the requirements of long-term stable use. Ordinary nuts mainly rely on the friction between the threads to achieve connection and locking functions. However, under continuous vibration and impact, the friction between the threads gradually weakens. As the friction decreases, the nut is prone to loosening, and may even fall off completely. Once the nut loosens, gaps will appear between the transmission components of the roller shutter door motor, leading to unstable transmission and increased noise during operation. More seriously, this situation may also damage the motor, affect the normal use of the roller shutter door, and may even cause safety accidents, threatening people's lives and property.

[0005] To enhance the locking effect of nuts, traditional methods typically employ spring washers in conjunction with the nut. The spring washer, through its elastic deformation, generates a preload after the nut is tightened, thereby increasing the friction between the threads and providing some degree of anti-loosening protection. However, in practical applications, the anti-loosening effect of spring washers is less than satisfactory. Firstly, under prolonged exposure to pressure and vibration, the elasticity of the spring washer gradually diminishes, leading to a decrease in the preload and consequently, a reduction in its anti-loosening capability. Secondly, the anti-loosening principle of spring washers still relies on friction; when faced with strong vibrations and impacts, this friction-based method becomes ineffective, and the nut remains at risk of loosening.

[0006] Double-nut locking, a common mechanical method, works by interlocking two nuts to prevent them from loosening. While this method improves locking reliability to some extent, it also has some significant drawbacks. First, the double-nut structure increases the overall size and weight of the connecting components. For installation scenarios involving roller shutter motors with strict space and weight constraints, this undoubtedly causes inconvenience and may affect motor installation and overall layout. Second, the installation and removal of double nuts is relatively complex, requiring additional tools and specific operating procedures, which increases maintenance costs and workload. Furthermore, under prolonged vibration, the double nuts may rotate relative to each other. If this occurs, the locking effect will be significantly reduced or even completely lost.

[0007] Therefore, it is necessary to improve the existing anti-loosening locking structure. Utility Model Content

[0008] This utility model provides a shock-resistant and anti-loosening nut locking structure for a roller shutter door motor, aiming to solve the technical problem of easy loosening in existing structures. It effectively resists vibration and impact, ensuring the nut remains tight during long-term operation and guaranteeing the stable connection of the roller shutter door motor's transmission components.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A shock-resistant and anti-loosening nut locking structure for a roller shutter door motor includes:

[0011] Mounting plate;

[0012] The mounting feet of the roller shutter door motor are connected together with bolts and nuts;

[0013] A washer is provided between the nut and the connecting leg, and the washer is fitted onto the bolt.

[0014] A locking component, comprising a connecting ring and several elastic elements, wherein the connecting ring is embedded in the annular groove of the washer, the elastic elements are connected to the connecting ring, and the abutting portion of the elastic elements abuts against the inner wall of the through hole of the connecting foot.

[0015] Furthermore, the supporting part includes:

[0016] The connecting part is connected to the connecting ring;

[0017] A locking head is connected to the connecting part, and the abutting surface of the locking head abuts against the inner wall of the through hole.

[0018] Furthermore, the elastic element also includes an elastic connecting portion, wherein the elastic connecting portion:

[0019] An inclined plate, the upper end of which is connected to the connecting ring;

[0020] A curved portion is connected to the lower end of the inclined plate, and a supporting portion is connected to the curved portion.

[0021] Furthermore, there is a gap between the inclined plate and the connecting portion.

[0022] Furthermore, a lug is connected to the lower end face of the connecting ring, and the inclined plate of the elastic element is connected to the lower end of the lug.

[0023] Furthermore, the gasket, made of modified polytetrafluoroethylene composite material, has an embedded mesh plate made of glass fiber.

[0024] Furthermore, the gasket, made of modified polytetrafluoroethylene composite material, has an embedded mesh plate made of stainless steel.

[0025] Furthermore, the surface of the connecting ring is coated with a DLC coating with a thickness of 2-5 μm.

[0026] Compared with the prior art, the advantages of this utility model are:

[0027] 1. The elastic part of the locking component abuts against the inner wall of the through hole of the connecting foot. When the roller shutter door motor vibrates and impacts, the elastic part can deform by its own elasticity, always maintaining pressure on the inner wall of the through hole, effectively resisting vibration and impact, preventing the nut from loosening or even falling off, ensuring that the nut remains tight during long-term operation, ensuring the stable connection of the roller shutter door motor transmission components, and avoiding problems such as unstable transmission, increased noise, and motor damage caused by the nut loosening.

[0028] 2. The elastic connection of the elastic element consists of an inclined plate and a bent portion. This structure gives the elastic element better elasticity and cushioning performance. When subjected to vibration and impact, the inclined plate and bent portion can more effectively disperse and absorb energy, further enhancing the anti-loosening effect. At the same time, the gap between the inclined plate and the connection portion provides space for the deformation of the elastic element, allowing the elastic element to exert its elastic function more freely and improving its seismic and anti-loosening performance.

[0029] 3. The locking structure features a simple overall design with clear connections between components, making installation relatively easy. Compared to double-nut anti-loosening structures, it eliminates the need for complex installation steps and additional tools, reducing installation difficulty and workload, and improving installation efficiency.

[0030] 4. The structure also facilitates disassembly when maintenance or component replacement is required. Due to the absence of complex mechanical connections and locking mechanisms, operators can quickly and easily remove nuts and related components, reducing maintenance and time costs.

[0031] 5. The gasket is made of modified polytetrafluoroethylene (PTFE) composite material and has an embedded mesh plate made of glass fiber or stainless steel. Modified PTFE composite material has excellent wear resistance, corrosion resistance, and self-lubricating properties, which reduces friction between the gasket and the connecting feet and nuts, extending the gasket's service life. The embedded mesh plate enhances the gasket's strength and stability, making it less prone to deformation under pressure and vibration, ensuring the gasket's sealing and cushioning performance, and further improving the reliability of the entire locking structure.

[0032] 6. The surface of the connecting ring is coated with a DLC coating with a thickness of 2-5μm. The DLC coating has high hardness, low coefficient of friction and good wear resistance, which can effectively protect the surface of the connecting ring, reduce wear and corrosion, and improve the service life and performance stability of the connecting ring. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the roller shutter door motor of this utility model, in which the connecting feet and the mounting plate are connected by bolts and nuts.

[0034] Figure 2 This is a cross-sectional view of the bolt and nut connection foot and mounting plate of this utility model.

[0035] Figure 3 For the present utility model Figure 2 A magnified schematic diagram of the structure at point A.

[0036] Figure 4 For the present utility model Figure 3 A magnified schematic diagram of the structure at point B.

[0037] Figure 5This is an enlarged cross-sectional view of the elastic element of this utility model.

[0038] Figure 6 This is an enlarged cross-sectional view of the improved gasket structure of this utility model.

[0039] Figure 7 For the present utility model Figure 4 A magnified schematic diagram of the structure at point C.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1-Mounting plate; 3-Roller shutter motor; 31-Connecting foot; 311-Through hole; 4-Bolt; 10-Nut; 20-Washer; 21-Ring groove; 50-Locking part; 51-Connecting ring; 511-Lug; 52-Elastic part; 521-Supporting part; 5211-Connecting part; 5212-Locking head; 52121-Supporting surface; 522-Elastic connecting part; 5221-Inclined plate; 5222-Bending part; 53-Gap; 60-Grid plate. Detailed Implementation

[0042] refer to Figures 1 to 7 Roller shutters are widely used in commercial shops, garages, warehouses, and many other locations due to their convenient opening, high efficiency, and space-saving advantages. As the core component driving the opening and closing of roller shutters, the stable and reliable performance of the roller shutter motor is crucial. However, with the development of the construction industry and the diversification of application scenarios, roller shutter motors often operate under special conditions of vibration and impact, such as near major traffic arteries or buildings with large machinery operating nearby. Under the dynamic load of the motor's own operation and the opening and closing of the roller shutter, traditional ordinary nut locking structures rely on the friction between the threads for locking. Under continuous vibration and impact, this friction weakens, easily leading to nut loosening or even falling off, resulting in unstable transmission, increased noise, motor damage, and safety accidents. The traditional method of using spring washers with nuts is ineffective because the elasticity of the spring washers diminishes and the anti-loosening mechanism relies on friction. While double-nut anti-loosening improves locking reliability, it increases the size and weight of the connecting components, complicates installation and disassembly, and may fail due to relative rotation under long-term vibration. Therefore, this utility model provides a shock-resistant and anti-loosening nut locking structure for roller shutter motors to solve the above problems.

[0043] refer to Figures 1 to 7 ,like Figure 1 As shown, the anti-vibration and anti-loosening nut locking structure of this roller shutter door motor mainly includes a mounting plate 1, a roller shutter door motor 3, bolts 4, nuts 10, washers 20, and locking parts 50.

[0044] The mounting foot 31 of the roller shutter motor 3 is provided with a through hole 311. During installation, align the mounting foot 31 of the roller shutter motor 3 with the mounting plate 1, so that the bolt 4 passes through the hole on the mounting plate 1 and the through hole 311 of the mounting foot 31 in sequence, and then put on the nut 10. By tightening the nut 10, the initial connection between the mounting foot 31 and the mounting plate 1 is achieved.

[0045] like Figure 2 , Figure 3 and Figure 4 As shown, a washer 20 is provided between the nut 10 and the connecting leg 31, and the washer 20 is fitted onto the bolt 4. As a technical optimization solution of this utility model, such as... Figure 6 As shown, the washer 20 is made of modified polytetrafluoroethylene composite material and has an embedded mesh plate 60. The modified polytetrafluoroethylene composite material has good wear resistance, corrosion resistance, and self-lubricating properties. During the operation of the roller shutter motor, it can reduce the friction between the washer 20 and the connecting foot 31 and nut 10, extending the service life of the washer 20. The embedded mesh plate 60 enhances the strength and stability of the washer 20, making it less prone to deformation under pressure and vibration, ensuring the sealing and buffering performance of the washer 20, further improving the reliability of the entire locking structure, and effectively addressing the vibration and impact problems of the roller shutter motor under special operating conditions.

[0046] The mesh plate 60 can enhance the strength and stability of the gasket 20. In one embodiment, the mesh plate 60 is made of glass fiber, which is lightweight and can improve the structural strength without significantly increasing the overall weight of the gasket. Moreover, glass fiber has a low cost, which helps to control production costs.

[0047] Preferably, the mesh plate 60 is made of stainless steel. Stainless steel has high strength and good toughness, can withstand greater pressure and vibration, is not easily damaged, and has strong corrosion resistance. It can maintain stable performance for a long time under complex working conditions, further ensuring the reliability of the locking structure and effectively coping with the vibration and impact of the roller shutter door motor under special working conditions.

[0048] like Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, the locking element 50 is the core component of this structure, comprising a connecting ring 51 and several elastic elements 52. The connecting ring 51 is embedded in the annular groove 21 of the washer 20. To enhance the performance of the connecting ring 51, its surface is coated with a DLC coating with a thickness of 2-5 μm. The DLC coating has high hardness, low coefficient of friction, and good wear resistance, effectively protecting the surface of the connecting ring 51, reducing wear and corrosion, improving the service life and performance stability of the connecting ring 51, and ensuring that the connecting ring 51 can function stably during long-term use.

[0049] The elastic element 52 is connected to the connecting ring 51, and its abutting portion 521 abuts against the inner wall of the through hole 311 of the connecting foot 31. The abutting portion 521 includes a connecting portion 5211 and a locking head 5212. The connecting portion 5211 is connected to the connecting ring 51, and the locking head 5212 is connected to the connecting portion 5211. The abutting surface 52121 of the locking head 5212 abuts against the inner wall of the through hole 311. When the roller shutter door motor generates vibration and impact during operation, the abutting surface 52121 of the locking head 5212 always remains in contact with the inner wall of the through hole 311. The elastic element 52 can deform by its own elasticity, always maintaining pressure on the inner wall of the through hole 311, effectively resisting vibration and impact, preventing the nut 10 from loosening or even falling off, ensuring that the nut 10 remains in a tight state during long-term operation, ensuring the stable connection of the transmission components of the roller shutter door motor, and avoiding problems such as unstable transmission, increased noise, and motor damage caused by the loosening of the nut 10.

[0050] The elastic element 52 also includes an elastic connecting portion 522, which consists of an inclined plate 5221 and a bent portion 5222. The upper end of the inclined plate 5221 is connected to the connecting ring 51, the bent portion 5222 is connected to the lower end of the inclined plate 5221, and the supporting portion 521 is connected to the bent portion 5222. This structure gives the elastic element 52 better elasticity and cushioning performance. When subjected to vibration and impact, the inclined plate 5221 and the bent portion 5222 can more effectively disperse and absorb energy, further enhancing the anti-loosening effect. At the same time, there is a gap 53 between the inclined plate 5221 and the connecting portion 5211, which provides space for the deformation of the elastic element 52, allowing the elastic element 52 to exert its elastic function more freely and improving its seismic and anti-loosening performance.

[0051] A lug 511 is connected to the lower end face of the connecting ring 51, and the inclined plate 5221 of the elastic element 52 is connected to the lower end of the lug 511. This design makes the connection between the elastic element 52 and the connecting ring 51 more stable and less prone to loosening during long-term use, thus ensuring the structural stability of the entire locking element 50.

[0052] This locking structure features a simple overall design with clearly defined connections between components. During installation, simply assemble the components in sequence. Compared to double-nut anti-loosening structures, it eliminates the need for complex installation steps and additional tools, reducing installation difficulty and workload while improving efficiency. The structure also facilitates disassembly when maintenance or component replacement is required. Due to the absence of complex mechanical connections and locking methods, operators can quickly and easily disassemble nut 10 and related components, reducing maintenance and time costs.

[0053] In summary, the anti-vibration and anti-loosening nut locking structure of this roller shutter door motor effectively solves the problem of easy loosening in existing structures through its unique design and the synergistic effect of its components. It can adapt to the usage requirements of roller shutter door motors under various complex working conditions and has significant economic and social benefits.

Claims

1. A rolling door motor anti-shock anti-loose nut locking structure, characterized in that, include: Mounting plate (1); The mounting feet (31) of the roller shutter door motor (3) are connected together by bolts (4) and nuts (10); A washer (20) is provided between the nut (10) and the connecting leg (31), and the washer (20) is fitted onto the bolt (4); The locking member (50) includes a connecting ring (51) and a plurality of elastic members (52). The connecting ring (51) is embedded in the annular groove (21) of the washer (20). The elastic members (52) are connected to the connecting ring (51). The abutting part (521) of the elastic member (52) abuts against the inner wall of the through hole (311) of the connecting foot (31).

2. The anti-loose nut locking structure of the roller shutter door motor according to claim 1, characterized in that, The supporting part (521) includes: A connecting part (5211) is connected to the connecting ring (51); A locking head (5212) is connected to the connecting part (5211), and the abutting surface (52121) of the locking head (5212) abuts against the inner wall of the through hole (311).

3. The anti-loose nut locking structure of the roller shutter door motor according to claim 2, characterized in that, The elastic element (52) further includes an elastic connecting portion (522), the elastic connecting portion (522): Inclined plate (5221), the upper end of which is connected to the connecting ring (51); A curved portion (5222) is connected to the lower end of the inclined plate (5221), and a supporting portion (521) is connected to the curved portion (5222).

4. The anti-vibration and anti-loosening nut locking structure for the roller shutter door motor according to claim 3, characterized in that, There is a gap (53) between the inclined plate (5221) and the connecting part (5211).

5. The anti-vibration and anti-loosening nut locking structure for roller shutter door motors according to claim 1, characterized in that, The lower end face of the connecting ring (51) is connected to a lug (511), and the inclined plate (5221) of the elastic element (52) is connected to the lower end of the lug (511).

6. The anti-vibration and anti-loosening nut locking structure for roller shutter door motors according to claim 1, characterized in that, The gasket (20), made of modified polytetrafluoroethylene composite material, has an embedded mesh plate (60) made of glass fiber.

7. The anti-vibration and anti-loosening nut locking structure for roller shutter door motors according to claim 1, characterized in that, The gasket (20), made of modified polytetrafluoroethylene composite material, has a mesh plate (60) made of stainless steel embedded within it.

8. The anti-vibration and anti-loosening nut locking structure for roller shutter door motors according to claim 1, characterized in that, The surface of the connecting ring (51) is coated with a DLC coating with a thickness of 2-5 μm.

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