Combined fastener with copper gasket
By using copper washers and limit plates, the problems of screw fasteners loosening under vibration and poor conductivity of plastic washers are solved, achieving a connection effect with high thermal conductivity and stable preload.
Patent Information
- Application Number
- CN202520631666.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-04-07
AI Technical Summary
Existing screws and fasteners loosen under vibration and impact, and plastic washers lose preload and become non-conductive under long-term stress, affecting heat dissipation.
Copper gaskets are used instead of plastic gaskets, and through slots and limiting plates are set on the rod body. Combined with the inclined return slot design of the return ring, the connection stability and conductivity are enhanced.
Copper gaskets improve the thermal conductivity and preload stability of fasteners, prevent loosening, are suitable for humid and corrosive environments, and enhance connection stability and sealing.
Smart Images
Figure CN223825407U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of fastener technology, and in particular relates to a combined fastener with a copper washer. Background Technology
[0002] Screws, commonly known simply as screws, are a type of fastener used to secure two or more parts (or components) together to form a single unit. Screws are widely used in machinery manufacturing, construction, automotive, aerospace, and other fields.
[0003] However, during the operation of mechanical equipment, the continuous vibration and impact can cause screws and fasteners to loosen. This effect is particularly pronounced under high-speed operation or heavy-load conditions.
[0004] Currently, most fasteners use plastic washers to increase the preload between screws and fasteners. However, under long-term stress, the plastic washers gradually reduce the preload due to temperature and creep. In addition, when conductivity is required, plastic washers cannot act as a conductive medium and will also affect the heat dissipation of fasteners. Utility Model Content
[0005] The purpose of this utility model is to address the problem that most existing fasteners use plastic washers to increase the preload between screws and connectors, but under long-term stress, the plastic washers gradually reduce the preload due to temperature and creep. Furthermore, when conductivity is required, the plastic washers cannot act as a conductive medium and also affect the heat dissipation of the fastener. Therefore, this utility model proposes a combined fastener with copper washers.
[0006] To achieve the above objectives, this utility model adopts the following technical solution: a combined fastener with a copper washer, comprising:
[0007] The screw head has an abutment portion on its inner wall, and the shank is connected to the abutment portion.
[0008] A copper washer is fitted onto the rod body, and a return ring is fitted onto the rod body, the return ring being located between the copper washer and the nut.
[0009] As a further description of the above technical solution:
[0010] The rod body is provided with a through groove, and the copper gasket is provided with a limiting plate, which is located in the through groove.
[0011] As a further description of the above technical solution:
[0012] The rod body includes a smooth part and a threaded part, the copper washer and the return ring are sleeved on the smooth part, and the nut is screwed onto the threaded part.
[0013] As a further description of the above technical solution:
[0014] The copper gasket includes an abutting sleeve and a fitting sleeve, the limiting plate is connected to the fitting sleeve, and the abutting sleeve abuts against the abutting part.
[0015] As a further description of the above technical solution:
[0016] The return ring is made of iron and has an inclined return groove.
[0017] As a further description of the above technical solution:
[0018] The through groove extends from the tail end of the threaded portion to the smooth portion.
[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0020] 1. In this utility model, by using copper gaskets instead of plastic gaskets, not only can heat conduction be improved and the working temperature reduced, but corrosion can also be avoided in environments with humid or corrosive gases or liquids. At the same time, copper gaskets have high strength and hardness, can maintain preload for a long time, and are not prone to creep and deformation. Compared with the materials of screw heads and screws, the flexibility of copper gaskets can fill uneven parts, increase the contact area, improve the stability and sealing of the connection, and prevent loosening.
[0021] 2. In this utility model, by setting an inclined return groove on the return ring and setting a limiting plate on the copper washer, the limiting plate is located in the through groove of the rod body. When the nut is screwed on the threaded part, it presses the return ring, so that the opening of the return ring is aligned and the connecting piece abuts against the copper washer, thereby completing the connection between the fastener and the connecting piece, improving the stability of the connection, and preventing the nut from loosening. At the same time, the setting of the limiting plate also ensures the stability of the rod body. Attached Figure Description
[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 A three-dimensional composite fastener with copper washers Figure 1 .
[0024] Figure 2 This is a cross-sectional view of a composite fastener with a copper gasket.
[0025] Figure 3 A three-dimensional composite fastener with copper washers Figure 2 .
[0026] Legend:
[0027] 1-Screw head; 2-Abutting part; 3-Rod body; 31-Smooth part; 32-Threaded part; 4-Copper washer; 41-Abutting sleeve; 42-Fitting sleeve; 5-Returning ring; 6-Through groove; 7-Limiting plate; 8-Nut; 9-Inclined return groove. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0032] In the description of the embodiments of this utility model, it should be noted that the terms "upper" and "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0033] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0034] Please see Figure 1-3 This utility model provides a technical solution: a combined fastener with copper washers, comprising:
[0035] The screw head 1 has an abutment part 2 on its inner wall, and the rod body 3 is connected to the abutment part 2.
[0036] A copper washer 4 is fitted onto the rod body 3, and a return ring 5 is fitted onto the rod body 3. The return ring 5 is located between the copper washer 4 and the nut 8.
[0037] The rod body 3 is provided with a through groove 6, and the copper gasket 4 is provided with a limiting plate 7, which is located in the through groove 6.
[0038] The rod body 3 includes a smooth part 31 and a threaded part 32. The copper washer 4 and the return ring 5 are sleeved on the smooth part 31, and the nut 8 is screwed onto the threaded part 32.
[0039] The copper gasket 4 includes an abutting sleeve 41 and a fitting sleeve 42. The limiting plate 7 is connected to the fitting sleeve 42, and the abutting sleeve 41 abuts against the abutting part 2.
[0040] The return ring 5 is made of iron and has an inclined return groove 9. The return ring helps to resist some of the vibration force during vibration.
[0041] The through groove 6 extends from the tail end of the threaded portion 32 to the smooth portion 31. This allows the copper washer to be fitted onto the rod body, with the limiting plate on the copper washer located in the through groove. This prevents the copper washer from rotating during vibration, thus avoiding the transmission of its rotational force to the nut and causing the nut to loosen.
[0042] Working principle: By using copper gaskets instead of plastic gaskets, not only can heat be conducted well and the operating temperature be reduced, but corrosion can also be avoided in humid, corrosive gas or liquid environments. At the same time, copper gaskets have high strength and hardness, can maintain preload for a long time, and are not prone to creep and deformation. Compared with the materials of screw heads and screws, the flexibility of copper gaskets can fill uneven areas, increase contact area, improve connection stability and sealing, and prevent loosening.
[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A combined fastener with a copper washer, characterized in that, include: The screw head has an abutment portion on its inner wall, and the shank is connected to the abutment portion. A copper washer is fitted onto the rod body, and a return ring is fitted onto the rod body, the return ring being located between the copper washer and the nut.
2. A combined fastener with a copper washer according to claim 1, characterized in that, The rod body is provided with a through groove, and the copper gasket is provided with a limiting plate, which is located in the through groove.
3. A combined fastener with a copper washer according to claim 2, characterized in that, The rod body includes a smooth part and a threaded part, the copper washer and the return ring are sleeved on the smooth part, and the nut is screwed onto the threaded part.
4. A combined fastener with a copper washer according to claim 1, characterized in that, The copper gasket includes an abutting sleeve and a fitting sleeve, the limiting plate is connected to the fitting sleeve, and the abutting sleeve abuts against the abutting part.
5. A combined fastener with a copper washer according to claim 4, characterized in that, The return ring is made of iron and has an inclined return groove.
6. A combined fastener with a copper washer according to claim 3, characterized in that, The through groove extends from the tail end of the threaded portion to the smooth portion.