Clamp spring nut reliable in connection

Abstract

The utility model discloses a clamp spring nut which is reliable in connection. The clamp spring nut reliable in connection comprises a base plate part and an elastic locking part extending to the lower portion of the base plate part, the base plate part is provided with a vertically-through connecting hole, and a notch is formed in the edge of the connecting hole so that the connecting hole can form a starting end and a tail end on the two sides of the notch, wherein the tail end is arranged lower than the starting end, the edge of the connecting hole is arranged in a spiral line mode from the starting end to the tail end, the elastic locking part comprises two elastic pieces located on the two sides of the lower portion of the connecting hole, and in the projection in the direction of the central axis of the connecting hole, the elastic pieces are located on the two sides of the lower portion of the connecting hole. And the two elastic sheets are partially exposed in the connecting hole. According to the clamp spring nut reliable in connection, the reliability of connection with a screw can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of the clamp spring connecting piece, especially to a clamp spring nut reliable in connection. BACKGROUND

[0002] The clamp spring nut is a connecting piece for connecting two components together, which is different from the nut in the traditional screw-nut cooperation. The clamp spring nut can be connected to one component to be connected in advance by clamping, and then a screw is passed through the other component and locked on the clamp spring nut, so that the connection between the two components is realized. Therefore, the clamp spring nut can be pre-installed compared with the traditional nut, without simultaneous operation, thereby improving the convenience of installation.

[0003] The clamp spring nut in the prior art is usually made of a metal sheet part, has a screw hole for cooperation with a screw, and has a clamping part for clamping the clamp spring nut in one component to be connected. The depth of the screw hole is usually the thickness of the metal sheet part, which is usually thin, so that the cooperation section for connecting with the screw is less. In long-term use, especially in a vibrating environment, the screw has the risk of withdrawing from the screw hole, and the connection reliability is insufficient.

[0004] Therefore, it is necessary to provide a technical scheme to overcome the deficiencies of the prior art. CONTENT OF THE UTILITY MODEL

[0005] The utility model discloses a clamp spring nut reliable in connection, which can improve the reliability of connection with a screw.

[0006] The utility model discloses a clamp spring nut reliable in connection, which can improve the reliability of connection with a screw.

[0007] As a further improved technical scheme, the clamp spring nut includes two elastic extension parts extending downward from opposite sides of the base plate part, and the two elastic extension parts are gradually close to each other from top to bottom.

[0008] As a further improved technical scheme, the clamp spring nut includes two elastic extension parts extending downward from opposite sides of the base plate part, and the two elastic extension parts are gradually close to each other from top to bottom.

[0009] As a further improved technical solution, the upper part of the elastic extension part is provided with a communication hole, and the snap spring nut comprises an inwardly folded extension part extending through the communication hole from the upper end of the back-bent extension part.

[0010] As a further improved technical solution, the elastic sheet is arranged at the free end of the inwardly folded extension part.

[0011] As a further improved technical solution, the elastic sheet is arranged in parallel with the corresponding back-bent extension part.

[0012] As a further improved technical solution, the inwardly folded extension part is provided with a clamping protrusion, the inner end of the clamping protrusion is connected to the corresponding inwardly folded extension part, and the outer end is arranged in a raised manner.

[0013] As a further improved technical solution, the notch extends along the radial direction of the connecting hole, and the two elastic extension parts are arranged at the opposite two side ends of the base plate part without the notch.

[0014] As a further improved technical solution, the two side ends of the base plate part without the elastic extension part have a support flange extending horizontally beyond the elastic extension part.

[0015] As a further improved technical solution, the snap spring nut is a hardware part which is integrally punched and bent from a metal plate.

[0016] The snap spring nut provided by the utility model has the advantages that the two elastic sheets are partially exposed in the connecting hole in the projection along the central axis direction of the connecting hole, so that the screw screwed into the connecting hole can be clamped by the two elastic sheets and the downward elastic force is applied, the risk of the screw exiting the connecting hole is reduced, and the reliability of the screw connection is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a perspective view of one embodiment of the snap spring nut of the utility model.

[0018] Figure 2 is another perspective view of one embodiment of the snap spring nut of the utility model.

[0019] Figure 3 is still another perspective view of one embodiment of the snap spring nut of the utility model.

[0020] Figure 4 is a top view of one embodiment of the snap spring nut of the utility model.

[0021] Figure 5 is an embodiment of the utility model for reliable connection of the spring nut and the mounting plate cooperation schematic view.

[0022] The reference signs are as follows: 100-spring nut; 1-base plate part; 10-connection hole; 101-notch; 11-beginning end; 12-end; 13-support flange; 2-elastic extension part; 21-communication hole; 3-back bending extension part; 4-inner folding extension part; 5-elastic sheet; 6-holding convex part; 200-mounting plate; 201-mounting hole. DETAILED DESCRIPTION

[0023] In order to have more clearly understood the technical features, purposes and effects of the utility model, the specific implementation of the utility model will be described in detail with reference to the drawings.

[0024] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] Please refer to Figures 1 to 5 The utility model discloses a kind of reliable connection spring nuts 100. The reliable connection spring nut 100, including base plate part 1 and the elastic lock holding portion extending to the below of the base plate part 1. The base plate part 1 has the connection hole 10 through up and down, the edge of the connection hole 10 is provided with the notch 101 to make the beginning end 11 and the end 12 for screw thread spin into connection are formed on the both sides of the notch 101, wherein the end 12 is compared with the beginning end 11 and is arranged below. The edge of the connection hole 10 is arranged as spiral line from the beginning end 11 to the end 12. The elastic lock holding portion includes two elastic sheets 5 located in the below of the both sides of the connection hole 10, in the projection along the central axis direction of the connection hole 10, the two elastic sheets 5 are partially exposed in the connection hole 10.

[0026] The reliable connection spring nut 100 provided by the utility model, including base plate part 1 and the elastic lock holding portion extending to the below of the base plate part 1, the elastic lock holding portion includes two elastic sheets 5 located in the below of the both sides of the connection hole 10, in the projection along the central axis direction of connection hole 10, the two elastic sheets 5 are partially exposed in the connection hole 10, so setting makes the screw that spin into connection hole 10 can be held by two elastic sheets 5 and the elastic force of being applied downward, reduce the risk of screw exit connection hole 10, improve the reliability of screw connection.

[0027] Please refer toFigures 1 to 4 As shown, the base plate part 1 is the base part of the circlip nut 100, and other parts extend from the base plate part 1. The base plate part 1 has a through hole 10 extending from top to bottom. The edge of the through hole 10 is provided with a notch 101, so that the through hole 10 forms a start end 11 and an end end 12 for screwing connection on both sides of the notch 101, wherein the end end 12 is arranged lower than the start end 11, and the edge of the through hole 10 is arranged in a spiral line from the start end 11 to the end end 12. The edge of the through hole 10 arranged in a spiral line makes the edge itself as a thread line, which is arranged to match the pitch of the screw connected therewith, so that there is no need to thread the through hole 10. The elastic locking part includes two elastic sheets 5 arranged on both sides below the through hole 10, and in the projection along the central axis direction of the through hole 10, the two elastic sheets 5 are partially exposed in the through hole 10. When the screw is screwed into the through hole 10, the two elastic sheets 5 will be pressed by the screw and elastically deformed, so as to exert an elastic force downward on the screw, reduce the risk of the screw exiting the through hole 10, and improve the reliability of the screw connection.

[0028] Please refer to Figure 1 As shown, the circlip nut 100 includes elastic extension parts 2 and back-bending extension parts 3. The notch 101 extends along the radial direction of the through hole 10, and the two elastic extension parts 2 are arranged on the opposite two side ends of the base plate part 1 without the notch 101. The design of the positional relationship makes the elastic extension parts 2 not affected by the notch 101, ensuring the elastic deformation ability and guiding effect of the elastic extension parts 2. The two side ends of the base plate part 1 without the elastic extension parts 2 have support flanges 13 extending horizontally beyond the elastic extension parts 2. The support flanges 13 are used to abut against the step surface of the stepped mounting hole 201 when installed in place, providing additional support for the circlip nut 100, preventing the circlip nut 100 from moving downward in the mounting hole 201, and improving the reliability of the clamping connection.

[0029] The elastic extension 2 extends downward from the opposite two side ends of the base plate part 1, and the two elastic extensions 2 are gradually close to each other from top to bottom. The bent extension 3 is formed by bending outward and upward from the lower end of the elastic extension 2, and the bent extension 3 is parallel to the corresponding elastic extension 2. The elastic extension 2 and the bent extension 3 form a structure for the elastic mounting of the snap spring nut 100 and the mounting hole 201 on the mounting plate 200. The above structure of the elastic extension 2 and the bent extension 3 makes the elastic extension 2 and the bent extension 3 have good elasticity, and can smoothly guide when mounted in the mounting hole 201. The bent extension 3 is bent and extended parallel to the elastic extension 2, thereby forming a double-layer elastic arm, which can provide more reliable elastic force to improve the reliability of the snap spring nut 100 in the mounting hole 201. When the snap spring nut 100 is installed, the outer side wall of the bent extension 3 extends obliquely and contacts the inner wall of the mounting hole 201, thereby guiding the installation. During the installation process, the bent extension 3 and the elastic extension 2 are elastically deformed inward when pressed by the inner wall of the mounting hole 201, thereby guiding the smooth installation of the snap spring nut 100. After installation, the elastic restoring force of the elastic extension 2 and the bent extension 3 can tightly clamp the snap spring nut 100 in the mounting hole 201, thereby improving the reliability of the clamping connection.

[0030] As shown in Figure 1 and Figure 3 , the upper part of the elastic extension 2 is provided with a communication hole 21, and the snap spring nut 100 includes an inner folding extension 4 extending inward from the upper end of the bent extension 3 and passing through the communication hole 21. The inner folding extension 4 is provided to connect the elastic sheet 5, the bent extension 3 and the elastic extension 2 into one body. In this way, the elastic force of the bent extension 3 deformed inward by the pressing of the mounting hole 201 can be applied to the elastic sheet 5, thereby improving the reliable connection of the elastic sheet 5 and the screw. At the same time, the pressing force between the screw and the elastic sheet 5 can also make the elastic clamping connection between the bent extension 3 and the mounting hole 201 more reliable, thereby preventing the snap spring nut 100 from being pulled out of the mounting hole 201.

[0031] In the embodiment, the elastic sheet 5 is arranged at the free end of the inner folding extension 4. The elastic sheet 5 is arranged in parallel with the corresponding bent extension 3, that is, the elastic sheet 5 is also arranged obliquely downward, and the two elastic sheets 5 are gradually close to each other from top to bottom. This obliquely downward arrangement makes each elastic sheet 5 apply an obliquely downward pulling force to the screw, and the cooperation of the two elastic sheets 5 makes the screw be pressed toward the central axis of the screw and be pulled downward at the same time, thereby further preventing the screw from being pulled out of the connecting hole 10 and improving the reliability of the screw connection.

[0032] As shown in Figures 1 to 3As shown, the inner folding extension 4 is provided with a clamping protrusion 6, the inner end of the clamping protrusion 6 is connected to the corresponding inner folding extension 4, and the outer end is provided in a raised manner. The clamping protrusion 6 is used to contact the wall surface of the mounting hole 201, and after the snap spring nut 100 is installed in place, the clamping protrusion 6 can be clamped in the wall surface of the mounting hole 201, preventing the snap spring nut 100 from shaking, and improving the stability of the connection of the snap spring nut 100 in the mounting hole 201. The clamping protrusion 6 is formed by punching and bending the middle part of the inner folding extension 4.

[0033] In this embodiment, the snap spring nut 100 is a hardware part, which is integrally punched and bent from a metal plate. This forming method has the advantages of high production efficiency and low cost. At the same time, the metal plate has high strength and hardness, which can ensure the use performance of the snap spring nut 100.

[0034] In this embodiment, the mounting plate 200 is provided with a mounting hole 201, and the mounting hole 201 is a rectangular hole provided with a stepped platform at one of the opposite sides, which is used to support the support flange 12 on both sides of the base plate 1 of the snap spring nut 100. The following will be described with reference to Figure 5 The process of installing the snap spring nut 100 provided by the utility model into the mounting hole 201 is as follows: first, the base plate 1 is on the top, the elastic extension 2 and the back bending extension 3 are on the bottom, and the snap spring nut 100 is aligned and pressed into the mounting hole 201. Since the elastic extension 2 and the back bending extension 3 are elastic and inclined, the back bending extension 3 contacts the inner wall of the mounting hole 201, so that the snap spring nut 100 can easily enter the mounting hole 201. When the snap spring nut 100 enters the mounting hole 201 to a certain depth without contacting the wall surface of the mounting hole 201, the elastic extension 2 and the back bending extension 3 are elastically deformed outward under the action of elastic restoring force, and the outer protrusion formed between the back bending extension 3 and the inner folding extension 4 is clamped on the bottom surface of the mounting plate 200; at the same time, the clamping protrusion 6 on the inner folding extension 4 abuts against the inner wall surface of the mounting hole 201 to prevent the snap spring nut 100 from shaking, and the support flange 13 abuts against the stepped platform of the mounting hole 201, thereby completing the installation of the snap spring nut 100.

[0035] When the screw needs to be connected with the snap spring nut 100, the screw is screwed into the connecting hole 10. Since the edge of the connecting hole 10 is provided in a spiral line from the beginning end 11 to the tail end 12, and the elastic sheet 5 is partially exposed in the connecting hole 10, the screw will gradually contact and press the elastic sheet 5 during the screwing process. The elastic sheet 5 is elastically deformed after being pressed, and applies a downward elastic force to the screw, so that the connection between the screw and the snap spring nut 100 is more tight. At the same time, the inclined downward arrangement of the elastic sheet 5 also applies an inclined downward tension to the screw, further preventing the screw from exiting the connecting hole 10.

[0036] As can be seen from the above description, the clamping spring nut 100 is provided with the elastic sheet 5, the elastic extension 2 and the back-bending extension 3, so that the screw is subjected to the elastic force of the elastic sheet 5 downward and the inclined downward pulling force after being screwed into the connecting hole 10, and the elastic extension 2 and the back-bending extension 3 tightly clamp the clamping spring nut 100 in the mounting hole, thereby greatly reducing the risk of the screw exiting the connecting hole 10 and improving the reliability of the screw connection. The elastic design of the elastic extension 2 and the back-bending extension 3 enables the clamping spring nut 100 to be more easily inserted into the mounting hole 201 during installation, thereby reducing the installation difficulty and improving the installation efficiency. The inward-bending extension 4 connects the elastic sheet 5, the back-bending extension 3 and the elastic extension 2 into one body, so that the extrusion force of the inner wall of the mounting hole 201 on the back-bending extension 3 when the back-bending extension 3 contacts the mounting hole 201 can be applied to the elastic sheet 5, thereby improving the reliable connection of the elastic sheet 5 and the screw. Meanwhile, the extrusion force between the screw and the elastic sheet 5 can also make the back-bending extension 3 and the mounting hole elastically connected more reliably, thereby avoiding the clamping spring nut 100 from being detached from the mounting hole 201 and ensuring the stability of the structure of the clamping spring nut 100.

[0037] The utility model is explained through several specific embodiments, and those skilled in the art should understand that various transformations and equivalent substitutions can be made to the utility model without departing from the scope of the utility model. In addition, various modifications can be made to the utility model for specific situations or specific conditions without departing from the scope of the utility model. Therefore, the utility model is not limited to the disclosed specific embodiments, but should include all the embodiments falling within the scope of the claims of the utility model.

Claims

1. A reliable connection of a circlip nut, characterized by, The spring nut (100) comprises two elastic extension parts (2) extending downward from opposite two sides of the base plate part (1), the two elastic extension parts (2) are gradually close to each other from top to bottom.

2. The reliable connection of the clamp spring nut according to claim 1, wherein, The spring nut (100) comprises two bent extension parts (3) respectively bent outward and upward from lower ends of the two elastic extension parts (2), the bent extension part (3) is parallel to the corresponding elastic extension part (2).

3. The reliable connection of the clamp spring nut according to claim 2, wherein, The upper part of the elastic extension part (2) is provided with a through hole (21), the spring nut (100) comprises an inward folding extension part (4) extending inward from the upper end of the bent extension part (3) and passing through the through hole (21).

4. The reliable connection of the clamp spring nut according to claim 3, wherein, The elastic sheet (5) is arranged at the free end of the inward folding extension part (4).

5. The reliable connection of the clamp spring nut according to claim 4, wherein, The elastic sheet (5) is parallel to the corresponding bent extension part (3).

6. The reliable connection of the clamp spring nut according to claim 5, wherein, The inward folding extension part (4) is provided with a clamping protrusion (6), the inner end of the clamping protrusion (6) is connected to the corresponding inward folding extension part (4), and the outer end is upwardly bent.

7. The reliable connection of the clamp spring nut according to claim 4, wherein, The notch (101) extends along the radial direction of the connecting hole (10), and the two elastic extension parts (2) are arranged on the opposite two sides of the base plate part (1) which is not provided with the notch (101).

8. The reliable connection of the clamp spring nut according to claim 2, wherein, The two sides of the base plate part (1) which is not provided with the elastic extension part (2) is provided with a support flange (13) extending horizontally beyond the elastic extension part (2).

9. The reliable connection of the clamp spring nut according to claim 8, wherein, The spring nut (100) is a hardware part which is integrally punched and bent from a metal plate.

10. The reliable connection of the clamp spring nut according to any one of claims 1 to 9, characterized in that ​

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