Fastener device

Abstract

The present invention discloses a fastener device, comprising: a first body, the inner side of which has a first embedding cavity; a second body, one end of which is breakably connected to the first body through a breaking portion, and the other end of which has a first abutting portion; the strength of the breaking portion is less than the strength of the first body or the second body; the second body can be inserted into the embedding cavity of the first body and fixedly connected to the first body after the breaking portion breaks; a first pressing portion, which is arranged on the outer side of the first body. The present invention includes at least the following advantages: the first body and the second body are broken by using a riveting process, and a clearance height is generated in the connection direction after the breaking.

Description

Technical Field

[0001] The invention relates to the technical field of connectors, in particular to a fastener device. Background Art

[0002] The description in this section merely provides background information related to the present disclosure and does not constitute prior art.

[0003] In the prior art, current connectors can fixedly connect two, three or even more panels together.

[0004] However, in order to make the connection more secure, it is necessary to provide a plate with a larger elastic coefficient (ie, a plate with a larger thickness after connection) among the two plates.

[0005] Traditional connectors cannot be adapted to plates with large size variations.

[0006] In addition, it is also hoped that the connector adapted to such a large size change also has some necessary properties of the traditional connector, for example, a certain connection strength, easier disassembly, etc.

[0007] As an auxiliary part, the connector is used to fix two or more plates together. Now, threaded connections such as bolts and screws are usually used, or rivets are used to fix two plates to each other. The above connection method cannot change the overall length of the connection mechanism. In this way, when connecting the elastic part, if the thickness of the elastic part needs to be adjusted and needs to be compressed, the above bolts, screws, rivets, etc. are not very suitable. In addition, forced compression connection requires high labor intensity and the connector is subjected to high stress, which is very difficult to achieve. In order to meet the occasions and applications where the thickness of the material to be connected is very different before and after the connection, the existing connection technology and connectors are pull riveting processes and the use of broken neck pull rivets. That is, after the riveting, the excess length of the pull rivet is removed by mechanical methods to achieve that the two ends of the fastener are not higher than the plane of the plate to be connected after the connection.

[0008] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present invention and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because these solutions are described in the background technology section of the present invention. Summary of the invention

[0009] In order to overcome the defects in the prior art, an embodiment of the present invention provides a fastener device, which uses a riveting process to produce a clearance height in the connection direction after the fastener breaks, and enables the two fastener devices to be relatively fixedly connected, thereby connecting the external plate.

[0010] The present application discloses a fastener device, comprising:

[0011] A first body, wherein the inner side of the first body has a first embedding cavity;

[0012] A second body, one end of the second body being breakably connected to the first body via a breakable portion, and the other end of the second body having a first abutting portion;

[0013] The strength of the fractured parts is smaller than the strength of the first body or the second body;

[0014] The second body can be inserted into the embedding cavity of the first body and fixedly connected to the first body after the breaking portion is broken;

[0015] A first pressing portion, wherein the first pressing portion is arranged on the outer side of the first body.

[0016] Furthermore, the width of the fracture portion is smaller than the width of the first body.

[0017] Furthermore, the outer side wall of the second body is located inside the outer side wall of the first body before the breaking portion breaks.

[0018] Furthermore, the other end of the second body has a step portion.

[0019] Further, the step portion is located outside the embedding cavity after the second body is inserted into the embedding cavity of the first body; or, the step portion is flush with the end surface of the first body after the second body is inserted into the embedding cavity of the first body.

[0020] Furthermore, the fastener device is made of a plastic metal material.

[0021] Furthermore, the inner side wall of the second body is located outside the inner side wall of the first body before the breaking portion breaks.

[0022] The present application also discloses another fastener device, including:

[0023] A third body, the third body having a second abutting portion and a second embedding cavity formed inside the third body, the second abutting portion being used to abut against the first abutting portion, thereby breaking the breaking portion;

[0024] The second pressing portion is arranged on the outer side of the third body.

[0025] Furthermore, the third body has two end surfaces opposite to each other along an extending direction of the second embedding cavity, and one of the end surfaces protrudes from the second pressing portion.

[0026] Furthermore, the third body is used to form an inner wall of the second embedding cavity and is riveted to the second body after the breaking portion is broken.

[0027] By means of the above technical solution, the beneficial effects of the present invention are as follows:

[0028] 1. In the present application, the first fastener device and the second fastener device are provided, and the first fastener device can move relative to the second fastener device, so that the third body is in conflict with the second body, and the second body flows into the first embedding cavity and the second embedding cavity after the breaking portion is broken, and is fixed to the first body and the third body; the first body and the third body flow and are fixed on the plurality of plates after the breaking portion is broken;

[0029] 2. The present application sets a breaking portion and an elastic third plate, and adopts a stamping process to produce a clearance height in the connection direction after the first fastener device breaks, and enables the two fastener devices to be relatively fixedly connected, thereby playing a connecting role for the external plate.

[0030] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 is a schematic diagram of the overall structure of the device before installation in an embodiment of the present invention;

[0033] Figure 2 is a schematic diagram of the overall structure of a first fastener device in an embodiment of the present invention;

[0034] Figure 3 is a schematic diagram of the overall structure of the second fastener device in an embodiment of the present invention;

[0035] Figure 4 It is a schematic diagram of the overall structure of the device after installation in an embodiment of the present invention.

[0036] Figure 5 is a schematic diagram of the overall structure of the device before installation in another embodiment of the present invention;

[0037] Figure 6It is a schematic diagram of the overall structure of the device after installation in another embodiment of the present invention.

[0038] Figure 7 is a schematic diagram of the overall structure of the device before installation in an embodiment of the present invention without a second pressing portion;

[0039] Figure 8 is a schematic diagram of the overall structure of the device after installation in an embodiment of the present invention without the second pressing portion;

[0040] Fig. 9 is a schematic diagram of the overall structure of the device before installation in another embodiment of the present invention without the second pressing portion;

[0041] Fig.10 It is a schematic diagram of the overall structure of the device after installation in another embodiment of the present invention without the second pressing portion.

[0042] The figure marks of the above drawings are: 1. first plate; 2. second plate; 3. third plate; 4. through hole; 5. first body; 6. second body; 7. first embedding cavity; 8. first pressing portion; 9. breaking portion; 10. first abutting portion; 11. third body; 12. second abutting portion; 13. second embedding cavity; 14. second abutting portion; 15. step portion. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, and they cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0045] Combination Figure 1As shown, this embodiment discloses a connection mechanism for connecting multiple plates, wherein the multiple plates include a first plate 1, a second plate 2, and at least one third plate 3 arranged between the first plate 1 and the second plate 2. Through holes 4 are correspondingly arranged on the multiple plates, and at least one of the third plates 3 is elastic. Specifically, in this embodiment, three plates are stacked in the up-down direction, and the first plate 1, the second plate 2, and the third plate 3 are all rectangular in shape, so that in the process of stacking, the surfaces of two adjacent plates can be completely or nearly completely fitted together, ensuring that the first plate 1 and the second plate 2 are uniformly stressed in the subsequent pressing process, reducing or avoiding the deformation of the first plate 1 and the second plate 2, and then affecting the deformation of the elastic third plate 3. The above-mentioned through hole 4 extends in the up-down direction, and the circular through hole 4 can be directly processed on the first plate 1, the second plate 2, and the third plate 3 by using the existing drilling technology, which is convenient to process and simple to operate. Of course, the cross-sectional shape of the above-mentioned plate can also be polygonal, circular or other shapes. What needs to be ensured here is the surface fit between the two adjacent plates. The shape of the above-mentioned through hole 4 can also be adaptively adjusted according to the shape of the connecting part, such as polygonal shape, etc., which is not limited or repeated here.

[0046] Combination Figure 2 and Figure 3 As shown, in this embodiment, the connection mechanism includes a first fastener device and a second fastener device. The first fastener device includes a first body 5 and a second body 6. The first body 5 has a first embedding cavity 7 on its inner side, and a first pressing portion 8 is provided on its outer side. Specifically, the first body 5 is a cylindrical structure extending in the up-down direction, and preferably, the axis of the first body 5 overlaps with the axis of the through hole 4. The shape of the embedding cavity is similar to that of the second body 6, and is in the shape of a circular hole. The first pressing portion 8 is located at the end of the first body 5 away from the second body 6, and extends outward in a direction perpendicular to the axis of the through hole 4. One end of the second body 6 is breakably connected to the first body 5 through a breaking portion 9, and the other end of the second body 6 has a first abutting portion 10, and the second body 6 can be inserted into the embedding cavity of the first body 5 and fixedly connected to the first body 5 after the breaking portion 9 is broken. Specifically, the second body 6 is a cylindrical structure extending in the up-down direction, and the axis of the second body 6 overlaps with the axis of the through hole 4.

[0047] Combination Figure 2 and Figure 3The second fastener device comprises a third body 11, the third body 11 having a second abutting portion 12, a second embedding cavity 13 formed inside the third body 11, and a second pressing portion arranged outside the third body 11. The second abutting portion 12 is used to abut against the first abutting portion 10, so as to break the breaking portion 9. Specifically, the third body 11 is a cylindrical structure extending in the up-down direction, and the axis of the third body 11 overlaps with the axis of the through hole 4. The cross-sectional shape of the second embedding cavity 13 in the horizontal plane is similar to the cross-sectional shape of the third body 11, and the cross-sectional size is slightly smaller than that of the third body 11, so that the third body 11 can be riveted with the second embedding cavity 13 during the subsequent pressure application process. The second pressing portion is located at the end of the second body 6 away from the third body 11, and extends outward in a direction perpendicular to the axis of the through hole 4. The third body 11 has two end faces opposite to each other along the extension direction of the second embedding cavity 13, and one of the end faces protrudes from the second pressing portion.

[0048] Combination Figure 1 As shown, before installation, the first body 5 is inserted into the through hole 4, and extends to the position of the through hole 4 formed by the third plate 3 after passing through the first plate 1, and the second body 6 is accommodated in the through hole 4 formed by the third plate 3. The upper end surface of the first clamping portion 8 abuts against the lower end surface of the first plate 1. The second body 6 protrudes and the end surface of the second clamping portion passes through the second plate 2 and extends to the through hole 4 of the third plate 3, and the lower surface of the second clamping portion abuts against the upper surface of the second plate 2.

[0049] Combination Figure 4 As shown, after installation, the first body 5 is inserted into the through hole 4, and extends to the position of the through hole 4 formed by the third plate 3 after passing through the first plate 1, and the outer side wall of the first body 5 is riveted to the first plate 1 and the third plate 3 respectively. The lower part of the second body 6 is inserted into the first embedding cavity 7 and riveted to the first embedding cavity 7; the upper part of the second body 6 extends to the position of the through hole 4 formed by the second plate 2, and is located outside the first embedding cavity 7, so that it can be inserted into the second embedding cavity 13 and riveted to the second embedding cavity 13. At this time, the end surface of the second body 6 protruding from the second pressing part is located above the first body 5, or abuts against the upper end surface of the first body 5. The upper end surface of the first pressing part 8 is pressed into the first plate 1 and riveted to the first plate 1, and the lower surface is flush with the lower surface of the first plate 1. The lower surface of the second pressing part is pressed into the second plate 2 and riveted to the second plate 2, and the upper surface is flush with the upper surface of the second plate 2.

[0050] Combination Figure 1 and Figure 4 As shown, before installation, the first body 5 and the third body 11 respectively have a clearance fit with the through hole 4 preset on the plate; after installation, the first body 5 undergoes plastic deformation in the radial direction under the extrusion of the second body 6 due to the plastic properties of the metal material itself, and forms an interference fit with the through hole 4; the third body can also undergo plastic deformation in the radial direction under the action of the punching force, and then forms an interference fit with the through hole 4. In summary, the connection mechanism is not only suitable for occasions where the thickness of the connecting plate has a large change in the axial direction of the through hole 4, but also eliminates the gap in the radial direction of the through hole 4, thereby meeting the precise position requirements of each through hole opened on the plate, and optimizing the structure.

[0051] Combination Figure 5 As shown, in another embodiment, before installation, the first body 5 is inserted into the through hole 4, and extends to the position of the through hole 4 formed by the third plate 3 after passing through the first plate 1, and the second body 6 is accommodated in the through hole 4 formed by the third plate 3. The upper end surface of the first clamping portion 8 abuts against the step surface opened on the first plate 1, and the lower end surface of the first clamping portion 8 is flush with the lower end surface of the first plate 1. The second body 6 protrudes and the end surface of the second clamping portion passes through the second plate 2 and extends to the through hole 4 of the third plate 3. The lower surface of the second clamping portion abuts against the step surface opened on the second plate 2, and the upper surface of the second clamping portion is flush with the upper surface of the second plate 2. And the lower surface of the second clamping portion abuts against the upper surface of the second plate 2.

[0052] Combination Figure 6 As shown, in another embodiment, after installation, the first body 5 is inserted into the through hole 4, and extends to the position of the through hole 4 formed by the third plate 3 after passing through the first plate 1, and the outer side wall of the first body 5 is riveted to the first plate 1 and the third plate 3 respectively. The lower part of the second body 6 is inserted into the first embedding cavity 7 and riveted to the first embedding cavity 7; the upper part of the second body 6 extends to the position of the through hole 4 formed by the second plate 2, and is located outside the first embedding cavity 7, so that it can be inserted into the second embedding cavity 13 and riveted to the second embedding cavity 13. At this time, the end surface of the second body 6 protruding from the second pressing part is located above the first body 5, or abuts against the upper end surface of the first body 5. The lower surface of the first pressing part 8 is flush with the lower surface of the first plate 1; the upper surface of the second pressing part is flush with the upper surface of the second plate 2.

[0053] Combination Figure 7-10As shown, in another embodiment, the first clamping portion 8 and the second clamping portion may not be provided on the first body 5 or the third body 11, but the cross-sectional size of the body without the clamping portion in the horizontal plane must be larger than the size of the corresponding through hole 4 to enable normal installation.

[0054] In this embodiment, the outer wall of the second body 6 is located inside the outer wall of the first body 5 before the fracture portion 9 fractures, so that the second body 6 can be inserted into the embedding cavity after being fractured during the stamping process. In the above-mentioned arrangement, the outer diameter of the second body 6 is slightly larger than the size of the first embedding cavity 7. During the stamping process, when the second body 6 fractures relative to the first body 5, the above-mentioned size design can facilitate the insertion of the second body 6 into the first embedding cavity 7. On the other hand, according to the fluidity of the metal, the first body 5 can be riveted with the second body 6, thereby completing the fixed connection between the two after the fracture.

[0055] In this embodiment, the width of the fracture portion 9 is smaller than the width of the first body 5. In the above arrangement, during the stamping process, the force that the first body 5 can withstand is greater than the force borne by the fracture portion 9, so that the first body 5 and the second body 6 can be fractured at the fracture portion 9, and then the second body 6 can move relative to the first body 5 to be inserted into the first embedding cavity 7.

[0056] Before breaking, the second body 6 is completely located outside the first body 5, and the lengths of both can form the overall length of the first fastener device; after breaking, part of the second body 6 is inserted into the embedding cavity of the first body 5, and the inserted part will not form the overall length of the first fastener device, that is, the length of the part on the diameter of the through hole 4 is the yield length, and the elastic third plate 3 can be compressed by the yield length. For example, when the length of the embedding cavity in the axial direction of the through hole 4 is preset to be 17㎜, the amount of compression of the third plate 3 after pressure is applied is approximately 17㎜. Preferably, the embedding cavity extends from the first end of the first body 5 to the second end. The above-mentioned setting can fully utilize the entire length of the first body 5 in the axial direction of the through hole 4, so as to achieve the maximum compression of the third plate 3 and optimize the structure. The length of the embedding cavity here can be adaptively adjusted according to the different requirements of the compression amount of the third plate 3.

[0057] After the above movement process, the first fastener device and the second fastener device after breaking can be better fixed to each other through the fluidity of the metal, and can be riveted with multiple plates, so that the connecting mechanism can withstand greater stress after the third plate is compressed.

[0058] In this embodiment, the first fastener device can move relative to the second fastener device, so that the third body 11 is in conflict with the second body 6, and the second body 6 flows into the first embedding cavity 7 and the second embedding cavity 13 after the breaking portion 9 is broken, and is fixed to the first body 5 and the third body 11; the first body 5 and the third body 11 flow and are fixed on the multiple plates after the breaking portion 9 is broken.

[0059] In this embodiment, the third plate 3 can be made of elastic polymer material. With the above material arrangement, the third plate 3 can be pressed thinner during the pressurization process, and then after stamping, the required thickness of the molded product can be achieved.

[0060] In this embodiment, the other end of the second body 6 has a step portion 15. In one embodiment, the step portion 15 is located outside the embedding cavity after the second body 6 is inserted into the embedding cavity of the first body 5. In another embodiment, the step portion 15 is flush with the end surface of the first body 5 after the second body 6 is inserted into the embedding cavity of the first body 5. The arrangement of the step portion 15 can withstand a large stamping force during the stamping process through the abutment between the second body 6 and the step portion 15, thereby avoiding excessive stamping and damage to the sheet material, and improving the qualified rate of the product.

[0061] In this embodiment, the fastener device is made of a plastic metal material. Specifically, the first body 5, the second body 6, the third body 11, the first pressing part 8 and the second pressing part are all made of plastic metal, so that during the stamping process, the riveting action is achieved through the fluidity of the metal.

[0062] In this embodiment, the outer side wall of the second body 6 has a certain inclination, so as to provide a certain guidance in the subsequent insertion process of the first embedding cavity 7, thereby optimizing the structure.

[0063] The working principle of this embodiment includes the following steps:

[0064] Insert the first fastener device into the through hole 4 from the first side of the first plate 1; at this time, the upper surface of the first pressing portion 8 abuts against the lower surface of the first plate 1;

[0065] Insert the second fastener device into the through hole 4 from the second side of the second plate 2, wherein the first side and the second side are opposite to each other; at this time, the lower surface of the first pressing portion 8 abuts against the upper surface of the second plate 2;

[0066] The first fastener device and the second fastener device are pressurized, so that the breaking portion 9 breaks after the third body 11 contacts the second body 6, so that the second body 6 flows into the first embedding cavity 7 and the second embedding cavity 13 after the breaking portion 9 breaks, so that the second body 6 is fixed to the first body 5 and the third body 11 respectively, and the first body 5 and the third body 11 flow and are fixed on the plurality of plates after the breaking portion 9 breaks.

[0067] Specifically, under the action of the punching pressure, the third body 11 moves toward the second body 6 and is able to contact the second body 6. At this time, the breaking portion 9 breaks under the action of the punching pressure, and the second clamping portion is pressed into the second plate 2 and moves downward synchronously with the second plate 2; the second plate 2 continues to move downward, and the second body 6 is inserted into the first embedding cavity 7 under the contact of the second plate 2; the second plate 2 continues to move downward, and when the body moves into place, under the action of the punching pressure, the upper end of the second body 6 is inserted into the second embedding cavity 13. At this time, the first clamping portion 8 is pressed into the first plate 1.

[0068] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A fastener device, characterized in that: Used to connect a plurality of plates, wherein the plurality of plates include a first plate, a second plate and at least one third plate arranged between the first plate and the second plate, through holes are correspondingly arranged on the plurality of plates, and at least one of the third plates is elastic. The fastener device comprises: a first fastener device and a second fastener device; The first fastener device comprises: A first body, wherein the inner side of the first body has a first embedding cavity; A second body, one end of the second body being breakably connected to the first body via a break portion, and the other end of the second body having a first abutting portion; The strength of the fractured parts is smaller than the strength of the first body or the second body; The second body can be inserted into the embedding cavity of the first body and fixedly connected to the first body after the breaking portion is broken; A first pressing portion, the first pressing portion is arranged on the outer side of the first body; The second fastener device comprises: A third body, the third body having a second abutting portion and a second embedding cavity formed inside the third body, the second abutting portion being used to abut against the first abutting portion, thereby breaking the breaking portion; A second pressing portion, the second pressing portion being arranged on the outer side of the third body; The third body is used to form the inner wall of the second embedding cavity and is riveted to the second body after the breaking portion is broken; When in use, the first fastener device is inserted into the through hole from the first side of the first plate; at this time, the upper surface of the first pressing portion abuts against the lower surface of the first plate; Inserting the second fastener device into the through hole from the second side of the second plate, wherein the first side and the second side are opposite to each other; at this time, the lower surface of the first pressing portion abuts against the upper surface of the second plate; Applying pressure to the first fastener device and the second fastener device, so that the breaking portion breaks after the third body contacts the second body, thereby causing the second body to flow into the first embedding cavity and the second embedding cavity after the breaking portion breaks, so that the second body is fixed to the first body and the third body respectively, and the first body and the third body flow and are fixed on the plurality of plates after the breaking portion breaks, Under the action of the punching pressure, the third body moves toward the second body and is able to collide with the second body. At this time, the broken part breaks under the action of the punching pressure, and the second clamping part is pressed into the second plate and moves downward synchronously with the second plate; the second plate continues to move downward, and the second body is inserted into the first embedding cavity under the impact of the second plate; the second plate continues to move downward, and when the body moves into place, under the action of the punching pressure, the upper end of the second body is inserted into the second embedding cavity, and at this time, the first clamping part is pressed into the first plate.

2. The fastener device according to claim 1, characterized in that: The width of the fracture portion is smaller than the width of the first body.

3. The fastener device according to claim 1, characterized in that: The outer side wall of the second body is located inside the outer side wall of the first body before the breaking portion breaks.

4. The fastener device according to claim 1, characterized in that: The other end of the second body has a step portion.

5. The fastener device according to claim 4, characterized in that: The step portion is located outside the embedding cavity after the second body is inserted into the embedding cavity of the first body; or, the step portion is flush with the end surface of the first body after the second body is inserted into the embedding cavity of the first body.

6. The fastener device according to claim 1, characterized in that: The fastener device is made of a plastic metal material.

7. The fastener device according to claim 1, characterized in that: The inner side wall of the second body is located outside the inner side wall of the first body before the breaking portion breaks.

8. The fastener device according to claim 1, characterized in that: The third body has two end surfaces that are opposite to each other along an extending direction of the second embedding cavity, and one of the end surfaces protrudes from the second pressing portion.

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