Clamp spring nut matched with self-tapping screw

Abstract

The utility model discloses a clamp spring nut matched with a self-tapping screw. The clamp spring nut matched with the self-tapping screw is used for being assembled in a mounting hole and provided with a screw hole used for being connected with the self-tapping screw, and the clamp spring nut comprises a base part, two fixing blocks connected to the base part and arranged oppositely, and two elastic blocks connected to the base part and arranged oppositely. The free ends of the two elastic blocks can be close to or far away from each other when stressed so as to be suitable for elastic deformation to clamp the snap spring nut into the mounting hole, and the two opposite side wall faces of the two fixing blocks and the two opposite side wall faces of the two elastic blocks are arc-shaped faces. And the four arc-shaped surfaces are encircled to form the inner wall surface of the screw hole. The clamp spring nut matched with the self-tapping screw is convenient to install and good in connection reliability.

Description

TECHNICAL FIELD

[0001] The utility model discloses spring clamp connecting piece technical field especially relates to a kind of spring clamp nut suitable for self-tapping screw. BACKGROUND

[0002] Spring clamp nut is a kind of connecting piece with the function of holding and threaded connection, it usually includes buckle and screw connection hole, buckle is used to connect spring clamp nut to one of two components to be connected, and then connect with the screw connection hole of the spring clamp nut by screw, to connect two components to be connected together.

[0003] In order to ensure the strength of screw connection, the wall thickness of screw connection hole cannot be too thin, and needs to reach a certain size, while the mounting hole on the component for holding connection of spring clamp nut is usually not suitable to be too large, so that the buckle on the spring clamp nut is usually small, usually a plurality of wedge-shaped protrusions on the side wall of spring clamp nut, there are problems of inconvenient installation and poor holding connection reliability.

[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 spring clamp nut is suitable for self-tapping screw, and it is convenient to install and has good connection reliability.

[0006] The utility model discloses spring clamp nut is suitable for self-tapping screw, and it is convenient to install and has good connection reliability.

[0007] As a further improved technical scheme, the spring clamp nut includes two connecting strips, and the two connecting strips are connected to the two fixed blocks at one end of the fixed blocks away from the base portion.

[0008] As a further improved technical scheme, the connecting strips are located outside the free ends of the two elastic blocks and have a spacing between the free ends of the elastic blocks, to provide a space for the elastic deformation of the free ends of the elastic blocks and limit the amplitude of the elastic deformation.

[0009] As a further improved technical solution, the elastic block and the fixed block on both sides are provided with a glue reduction space.

[0010] As a further improved technical solution, the base part is provided with a circular ring part, and the two fixed blocks are connected by the circular ring part at one end close to the base part.

[0011] As a further improved technical solution, the screw hole penetrates the base part, and the inner wall surface of the circular ring part constitutes part of the inner wall surface of the lower segment of the screw hole.

[0012] As a further improved technical solution, the outer side of the elastic block is provided with an inclined guide slope, and a support platform is horizontally extended at the upper end of the guide slope.

[0013] As a further improved technical solution, the elastic block is provided with an inner and outer through glue reduction hole at one end close to the base part, so that each elastic block is connected to the base part by two separate connecting arms.

[0014] As a further improved technical solution, the snap spring nut is provided with a support flange extending outward from the upper end edge of the two fixed blocks.

[0015] As a further improved technical solution, the snap spring nut is a plastic part, and the inner wall surface of the screw hole is a smooth surface, and the internal thread is pressed out by a self-tapping screw.

[0016] The snap spring nut adapted to the self-tapping screw provided by the utility model, including two elastic blocks and two fixed blocks, the free end of the two elastic blocks can approach or move away from each other under stress, so as to be suitable for elastic deformation and clamp the snap spring nut in the mounting hole, the two side wall surfaces of the two fixed blocks and the two side wall surfaces of the two elastic blocks are arc surfaces, and the four arc surfaces surround the inner wall surface of the screw hole; so the elastic block can function in clamping connection and screw connection, the elastic block as part of the screw connection can be set relatively thick, and the elastic block also serves as a clamping connection component itself, so that the setting of the clamping connection component is not occupied due to the relatively thick structure of the screw connection part, compared with the prior art, the installation convenience and connection reliability are improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a perspective view of an embodiment of the snap spring nut adapted to the self-tapping screw of the utility model.

[0018] Figure 2 is another perspective view of an embodiment of the snap spring nut adapted to the self-tapping screw of the utility model.

[0019] Figure 3It is the side view of the card spring nut for adapting self-tapping nails.

[0020] Figure 4 It is the cross-sectional view of the card spring nut for adapting self-tapping nails.

[0021] Figure 5 It is another cross-sectional view of the card spring nut for adapting self-tapping nails.

[0022] Figure 6 It is the schematic view of the card spring nut for adapting self-tapping nails and the mounting hole.

[0023] The reference signs are as follows: 100-card spring nut; 1-base part; 10-screw hole; 11-round ring part; 2-fixing block; 21-support flange; 22-connection strip; 3-elastic block; 301-gum reduction space; 302-gum reduction hole; 31-guiding slope; 32-supporting table; 33-connection arm; 200-mounting plate; 201-mounting hole. DETAILED DESCRIPTION

[0024] In order to have a more clear understanding of the technical features, purposes and effects of the present application, the specific embodiments of the present application will be described in detail with reference to the drawings.

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] In the technical field of card spring connectors, the card spring nut, as a connector with clamping and threaded connection functions, is widely used in various scenarios where two components need to be connected together. However, the existing card spring nuts have problems such as inconvenient installation and poor clamping connection reliability in actual application. In order to solve these problems, the present application proposes a card spring nut for adapting self-tapping nails, which is convenient to install and has good connection reliability.

[0027] Please refer to Figures 1 to 6As shown, the utility model discloses a kind of snap spring nut 100 of adaptation self-tapping screw, for being assembled in mounting hole 201 and being provided with screw hole 10 for being connected with self-tapping screw.The snap spring nut 100 includes base portion 1, two fixed blocks 2 connected on the base portion 1 and being oppositely arranged, and two elastic blocks 3 connected on the base portion 1 and being oppositely arranged.Free end of the two elastic blocks 3 can be close to each other or away from each other under stress, to adapt to the elastic deformation and be clamped in the mounting hole 201 with the snap spring nut 100.The two fixed blocks 2 two side wall surfaces facing each other and the two elastic blocks 3 two side wall surfaces facing each other are arc surface, and the four arc surfaces are surrounded and spliced to form the inner wall surface of the screw hole 10.

[0028] The snap spring nut 100 of adaptation self-tapping screw provided by the utility model can make elastic block 3 work on the clamping connection with mounting hole 201 and on the screw connection, and elastic block 3 can be set thicker as part of the screw connection, and elastic block 3 also serves as a clamping connection component itself, so that the setting of the clamping connection component is not occupied by the structure of the screw connection part, and compared with the prior art, the installation convenience and connection reliability are improved.

[0029] The snap spring nut 100 of adaptation self-tapping screw of the utility model includes base portion 1, two fixed blocks 2 connected on the base portion 1 and being oppositely arranged, and two elastic blocks 3 connected on the base portion 1 and being oppositely arranged.

[0030] The base portion 1 is the basic support part of the snap spring nut 100, and is a connecting seat for connecting the fixed block 2 and the elastic block 3.The shape and size of the base portion 1 can be designed according to the actual application scene to ensure that the snap spring nut 100 can be stably installed in the mounting hole 201.In some embodiments, the base portion 1 can be a flat plate structure with a certain thickness, and the outer shape contour can be adapted to the shape of the mounting hole, such as circular, square, etc.In the present embodiment, the snap spring nut 100 is in the shape of a cube or a cuboid, and the base portion 1 is generally in the shape of a trapezoidal table with a certain thickness, and the inclined surfaces around the trapezoidal table can be used to guide the installation of the snap spring nut 100 into the mounting hole 201.

[0031] Two fixed blocks 2 are connected to the base part 1 and arranged oppositely. The fixed blocks 2 are parts that remain relatively fixed with the base part 1 and remain substantially stationary during the process of connecting two components to be connected together by the snap nut 100. The side walls of the two fixed blocks 2 facing each other, i.e. the inner side walls of the two fixed blocks 2, are arc-shaped walls, which form part of the inner wall of the screw hole 10. The side walls of the two fixed blocks 2 facing away from each other, i.e. the outer side walls of the two fixed blocks 2, are flat and can be used to cooperate with the inner wall of the mounting hole 101 to play a certain positioning and supporting role.

[0032] Two elastic blocks 3 are also connected to the base part 1 and arranged oppositely, and the free ends of the two elastic blocks 3 can approach or move away from each other under force to adapt to elastic deformation to clamp the snap nut 100 in the mounting hole 201. The side walls of the two elastic blocks 3 facing each other, i.e. the inner side walls of the two elastic blocks 3, are arc-shaped walls, which form part of the inner wall of the screw hole 10. The side walls of the two elastic blocks 3 facing away from each other, i.e. the outer side walls of the two elastic blocks 3, are arranged to be suitable for being fitted into the mounting hole 201 and clamped and connected with the mounting hole 201. This elastic deformation design makes the snap nut 100 more easily enter the mounting hole 201 during installation, and after installation, it can be tightly clamped in the mounting hole 201 by the elastic restoring force, improving the reliability of the clamped connection. Please see Figure 6 In the embodiment shown, the snap nut 100 is inserted into the mounting hole 201 of the mounting plate 200 with the base part 1 facing down. When the elastic blocks 3 are in contact with the wall of the mounting hole 201 and are pressed, the two elastic blocks 3 deform inwardly. As the snap nut 100 continues to move downward, after the two elastic blocks 3 move below the mounting plate 200, the two elastic blocks 3 recover outwardly by the elastic force and are clamped in the mounting hole 201. The mounting hole 201 can be a single size through hole or a stepped hole with a narrow upper part and a wide lower part; correspondingly, the elastic blocks 3 can be clamped on the bottom surface of the mounting plate 200 or on the stepped surface of the stepped hole.

[0033] The two side walls of the two fixed blocks 2 facing each other and the two side walls of the two elastic blocks 3 facing each other are arc-shaped surfaces, and the four arc-shaped surfaces surround to form the inner wall of the screw hole 10. This arc-shaped surface design makes the inner wall of the screw hole 10 more smooth, which is beneficial to the attack of the self-tapping screw, and also can improve the strength of the screw connection.

[0034] Please see Figure 1 and Figure 3As shown, the clamping spring nut 100 comprises two connecting strips 22 connecting the two fixing blocks 2 away from the base part 1. The connecting strips 22 can enhance the connection strength between the fixing blocks 2 and improve the overall stability of the clamping spring nut 100. The connecting strips 22 are located outside the free ends of the two elastic blocks 3 and have a spacing with the free ends of the elastic blocks 3 to provide a space for the elastic deformation of the free ends of the elastic blocks 3 and limit the amplitude of the elastic deformation. The design of the position relationship can provide a space for the elastic deformation of the free ends of the elastic blocks 3, for example, when the self-tapping screw is connected into the screw hole 10, the self-tapping screw extrudes the elastic blocks 3 to deform outwardly, the connecting strips 22 can block the outside of the free ends of the elastic blocks 3 to prevent the elastic blocks 3 from deforming outwardly too much to affect the reliability of the connection with the self-tapping screw, and prevent the elastic blocks 3 from deforming too much to cause damage, thereby ensuring the service life and connection reliability of the clamping spring nut 100.

[0035] The utility model embodiment sets up the glue reduction space 301 between the elastic block 3 and the fixing block 2 located at its both sides. The setting of the glue reduction space 301 can reduce the material consumption of the clamping spring nut 100 and reduce the production cost. At the same time, the glue reduction space 301 can also make the elastic block 3 more easily elastically deform when stressed, thereby improving the installation performance and clamping connection performance of the clamping spring nut 100.

[0036] Please refer to Figures 1 to 3 and Figure 5 As shown, the outer side of the elastic block 3 is provided with an inclined guide slope 31 and a support platform 32 horizontally extending at the upper end of the guide slope 31. The setting of the guide slope 31 can guide the clamping spring nut 100 to more easily enter the installation hole 201 when installed, and the guide slope 31 can first contact the inner wall of the installation hole 201 when the clamping spring nut 100 is installed into the installation hole 201, thereby playing a guiding role and making the installation more smooth. The setting of the support platform 32 can provide support for the clamping spring nut 100 after the clamping spring nut 100 is installed in place, prevent the clamping spring nut 100 from being pulled out upwardly from the installation hole 201 when stressed by external force, and improve the reliability of the clamping connection.

[0037] Further, the elastic block 3 is provided with an inner-outer through glue reduction hole 302 at one end close to the base part 1, so that each elastic block 3 is connected to the base part 1 by two separate connecting arms 33. The setting of the glue reduction hole 302 can reduce the material consumption of the clamping spring nut 100 and reduce the production cost. At the same time, the glue reduction hole 302 can also make the elastic block 3 more easily elastically deform when stressed, thereby improving the installation performance and clamping connection performance of the clamping spring nut 100. The design of the two separate connecting arms 33 can make the elastic block 3 more uniformly elastically deform, thereby further improving the performance of the clamping spring nut 100.

[0038] As shown in Figures 1 to 4 As shown in the drawings, the clamping spring nut 100 is provided with a support flange 21 extending outward from the upper end edges of the two fixing blocks 2. The support flange 21 can be supported on the outer edge of the mounting hole 201 after the clamping spring nut 100 is installed in place, so as to avoid the clamping spring nut 100 from being completely inserted into the mounting hole 201 or shaking up and down in the mounting hole 201. The mounting hole 201 can be provided as a stepped hole, so that the support flange 21 is accommodated in the stepped hole and supported on the stepped surface of the stepped hole.

[0039] As shown in Figure 3 As shown in the drawings, in the present embodiment, the base part 1 is provided with a circular ring part 11 connecting the two fixing blocks 2 near one end of the base part 1. The circular ring part 11 can further enhance the connection strength between the fixing blocks 2 and improve the overall stability of the clamping spring nut 100. At the same time, the circular ring part 11 can also play a role in connecting and cooperating with the self-tapping screw. That is, the screw hole 10 penetrates the base part 1, and the inner wall surface of the circular ring part 11 constitutes part of the inner wall surface of the lower half of the screw hole 10. This design makes the screw hole 10 have a longer length, and at the same time makes the screw hole 10 have the upper half which is discontinuous in the circumferential direction by being spliced by the four arc-shaped wall surfaces of the fixing blocks 2 and the elastic blocks 3, and also has the lower half which is continuous in the circumferential direction by being formed by the circular ring part 11 and the base part 1, which is conducive to reliable cooperation with the self-tapping screw and improves the strength of the screw connection.

[0040] In the present embodiment, the clamping spring nut 100 is a plastic part, and each part included therein is integrally injection molded. The inner wall surface of the screw hole 10 is a smooth surface, and the internal thread is pressed out by the self-tapping screw. The plastic part has the advantages of light weight, low cost, and easy to process and form. The inner wall surface of the screw hole 10 is smooth, which is conducive to the tapping of the self-tapping screw. The self-tapping screw can press the internal thread on the inner wall surface of the screw hole 10 during tapping, thereby realizing the threaded connection with the self-tapping screw.

[0041] When installing the clamping spring nut 100 matched with the self-tapping screw of the utility model, first, the clamping spring nut 100 is aligned with the mounting hole 201 formed on the mounting plate 200 and pressed into the mounting hole 201. Since the free end of the elastic block 3 is elastic, and the elastic block 3 is provided with a guide inclined surface 31, the clamping spring nut 100 can easily enter the mounting hole 201. When the clamping spring nut 100 enters the mounting hole 201 to a certain depth without contacting the wall surface of the mounting hole 201, the free end of the elastic block 3 elastically deforms outward under the action of the elastic restoring force, and is clamped on the bottom surface of the mounting plate 200 by the support table surface 32, while the support flange 21 abuts against the top surface of the mounting plate 200, thereby completing the installation of the clamping spring nut 100.

[0042] When it is needed to connect the clasp spring nut 100 with the self-tapping screw, the self-tapping screw is passed through the parts to be connected and is tapped into the screw hole 10 of the clasp spring nut 100, since the inner wall surface of the screw hole 10 is a smooth surface, the self-tapping screw can be easily tapped in and extrude the internal thread on the inner wall surface of the screw hole 10 in the process of tapping in, realizing the threaded connection of the self-tapping screw and the clasp spring nut 100, thereby completing the connection between the parts to be connected and the mounting plate 200.

[0043] The clasp spring nut 100 provided by the utility model can be used for connecting sheet metal parts, plastic parts and the like on an automobile, and of course can also be used for connecting furniture, mechanical equipment and the like.

[0044] It can be known from the above description that the clasp spring nut 100 adapted to the self-tapping screw provided by the utility model comprises two elastic blocks 3 and two fixed blocks 2, the free ends of the two elastic blocks 3 can approach or move away from each other under stress, so as to be adapted to elastically deform and clamp the clasp spring nut 100 in the mounting hole, the two side wall surfaces of the two fixed blocks 2 facing each other and the two side wall surfaces of the two elastic blocks 3 facing each other are all arc surfaces, and the four arc surfaces surround and form the inner wall surface of the screw hole 10; such a setting makes the elastic block 3 be able to play a role in clamping connection and screw connection, the elastic block 3 as a part of the screw connection can be set to be relatively thick, and at the same time, the elastic block 3 also serves as a clamping connection component itself, and will not occupy the setting of the clamping connection component due to the relatively thick structure of the screw connection part, compared with the prior art, the installation convenience and the connection reliability are improved.

[0045] 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, and should include all the embodiments falling within the scope of the claims of the utility model.

Claims

1. A snap spring nut for adapting a self-tapping screw, for fitting in a mounting hole (201) and provided with a screw hole (10) for connection with a self-tapping screw, characterized in that, The clamping spring nut (100) comprises a base part (1), two fixing blocks (2) connected to the base part (1) and arranged oppositely, and two elastic blocks (3) connected to the base part (1) and arranged oppositely, free ends of the two elastic blocks (3) can approach or move away from each other under stress, so as to be suitable for elastic deformation to clamp the clamping spring nut (100) in the mounting hole (201), and two side wall surfaces of the two fixing blocks (2) facing each other and two side wall surfaces of the two elastic blocks (3) facing each other are arc surfaces, and the four arc surfaces surround the inner wall surface of the screw hole (10).

2. The cotter nut adapted for a self-tapping screw of claim 1, wherein, The clamping spring nut (100) comprises two connecting strips (22), and the two connecting strips (22) connect the two fixing blocks (2) at one end of the fixing blocks (2) away from the base part (1).

3. The cotter nut adapted for use with a self-threading pin of claim 2, wherein, The connecting strips (22) are located outside the free ends of the two elastic blocks (3) and have a spacing between the free ends of the elastic blocks (3), so as to provide a space for elastic deformation of the free ends of the elastic blocks (3) and limit the amplitude of elastic deformation.

4. The cotter nut for adapting a self-threading pin of claim 1, wherein, The elastic blocks (3) and the fixing blocks (2) located on both sides of the elastic blocks (3) are provided with a glue reduction space (301).

5. The cotter nut for adapting a self-threading pin of claim 1, wherein, The base part (1) is provided with a circular ring part (11), and the circular ring part (11) connects the two fixing blocks (2) at one end of the fixing blocks (2) close to the base part (1).

6. The cotter nut adapted for use with a self-threading pin of claim 5, wherein, The screw hole (10) penetrates the base part (1), and the inner wall surface of the circular ring part (11) constitutes part of the inner wall surface of the lower segment of the screw hole (10).

7. The cotter nut adapted for use with a self-threading pin of claim 1 wherein, The outer side surface of the elastic block (3) is provided with an inclined guide slope (31), and a support table surface (32) horizontally extending at the upper end of the guide slope (31).

8. The cotter nut adapted for use with a self-threading pin of claim 7, wherein, The elastic block (3) is provided with an inner-outer through glue reduction hole (302) at one end close to the base part (1), so that each elastic block (3) is connected to the base part (1) by two separate connecting arms (33).

9. The cotter nut adapted for use with a self-threading pin of claim 1 wherein, The clamping spring nut (100) is provided with a support flange (21) extending outward from the upper end edge of the two fixing blocks (2).

10. The cotter nut adapted for use with a self-threading nail as claimed in any one of claims 1 to 9, wherein, The clamping spring nut (100) is a plastic part, the inner wall surface of the screw hole (10) is a smooth surface, and the inner thread is pressed out by a self-tapping screw.

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