CN112460114A

CN112460114A - Fastener device

Info

Publication number: CN112460114A
Application number: CN201910849654.4A
Authority: CN
Inventors: 陈小明; 布莱恩.加德纳.本特里姆; 段大鹏
Original assignee: Binco Precision Parts China Co ltd
Current assignee: Binco Precision Parts China Co ltd
Priority date: 2019-09-09
Filing date: 2019-09-09
Publication date: 2021-03-09

Abstract

The invention discloses a fastener device, comprising: the inner side of the first body is provided with a first embedding cavity; a second body, one end of which is connected to the first body by a breaking part so as to be breakable, and the other end of which has a first contact part; the strength of the fracture part is smaller than that of the first body or the second body; the second body can be inserted into the embedding cavity of the first body after the fracture part is fractured and is fixedly connected with the first body; the first pressing part is arranged on the outer side of the first body. The invention at least comprises the following advantages: and the first body and the second body are fractured by adopting a press riveting process, and yield height is generated in the connecting direction after fracture.

Description

Fastener device

Technical Field

The invention relates to the technical field of connecting pieces, in particular to a fastener device.

Background

The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.

In the prior art, the current connectors can fixedly connect two or three or even more sheets together.

However, in order to achieve a stronger connection, it is necessary to provide a plate material having a large elastic modulus (i.e., a large thickness reduction after connection) between the two plate materials.

It is not possible for conventional connectors to accommodate such panels with widely varying dimensions.

Furthermore, it is desirable that connectors adapted to such large dimensional variations also have some of the necessary properties of conventional connectors, e.g. a certain strength of connection, easier disassembly, etc.

The connecting piece is used as an auxiliary piece for fixedly connecting two or more plates together. At present, the two plates are usually connected by means of screw threads such as bolts and screws, or by means of rivets. The whole length of the connecting mechanism cannot be changed by the aid of the connecting mode, so that when the elastic piece is connected, if the thickness of the elastic piece needs to be adjusted and needs to be compressed, the bolt, the screw, the riveting piece and the like are not suitable, the elastic piece is compressed and connected forcibly, manual labor intensity is high, stress borne by the connecting piece is large, and the elastic piece is difficult to realize. In order to meet the requirements of the occasions and applications of the materials to be connected, the thicknesses of which are greatly different before and after connection, the existing connection technology and connecting pieces are the rivet-pulling process and the broken-neck rivet is used. Namely, after riveting, the redundant part of the length of the rivet is removed by a mechanical method, so that the two ends of the connected fastener are not higher than the plane of the plate to be connected.

It should be noted that the above background description is only for the sake of clarity and complete description of the technical solutions of the present invention and for the understanding of those skilled in the art. Such solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the invention.

Disclosure of Invention

In order to overcome the defects in the prior art, the embodiment of the invention provides the fastener device, which adopts a pressure riveting process to enable the fastener to generate abdication height in the connecting direction after being broken, and enables the two fastener devices to be relatively and fixedly connected, so as to further play a role in connecting external plates.

The embodiment of the application discloses: a fastener device comprising:

the inner side of the first body is provided with a first embedding cavity;

a second body, one end of which is connected to the first body by a breaking part so as to be breakable, and the other end of which has a first contact part;

the strength of the fracture part is smaller than that of the first body or the second body;

the second body can be inserted into the embedding cavity of the first body after the fracture part is fractured and is fixedly connected with the first body;

the first pressing part is arranged on the outer side of the first body.

Further, the width of the breaking part is smaller than that of the first body.

Further, the outer side wall of the second body is located inside the outer side wall of the first body before the fracture of the fracture portion.

Further, the other end of the second body has a stepped portion.

Furthermore, the step part is positioned outside the embedding cavity after the second body is inserted into the embedding cavity of the first body; or the step part is flush with the end face of the first body after the second body is inserted into the embedding cavity of the first body.

Further, the fastening device is made of a metal material having plasticity.

Further, the inner side wall of the second body is positioned outside the inner side wall of the first body before the fracture part is fractured.

The embodiment of the application also discloses another kind of fastener device, includes:

the third body is provided with a second abutting part and a second embedded cavity formed on the inner side of the third body, and the second abutting part is used for abutting against the first abutting part so as to break the breaking part;

a second pressing part disposed at an outer side of the third body.

Furthermore, the third body has two end faces opposite to each other in the extending direction of the second embedding cavity, and one of the end faces protrudes from the second pressing part.

Further, the third body is used for forming the inner wall of the second embedding cavity, and the inner wall of the second embedding cavity is riveted with the second body after the fracture part is fractured.

By means of the technical scheme, the invention has the following beneficial effects:

1. in the application, through the arrangement of the first fastener device and the second fastener device, the first fastener device can move relative to the second fastener device, so that the third body is abutted against the second body, and the second body flows into the first embedding cavity and the second embedding cavity after the fracture part is fractured and is fixed with the first body and the third body; the first body and the third body are fixed on the plurality of plates in a flowing mode after the fracture part is fractured;

2. this application is through the fracture portion that sets up and have elastic third panel, adopts stamping process to make and produces the height of stepping down in the direction of connection after first fastener device fracture, and makes two fastener devices can fixed connection relatively, and then play the connection effect to outside panel.

In order to make the aforementioned and other objects, features and advantages of the invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of the overall device structure before installation in an embodiment of the invention;

FIG. 2 is a schematic view of the overall structure of a first fastening device in an embodiment of the present invention;

FIG. 3 is a schematic view of the overall structure of a second fastening device in an embodiment of the present invention;

fig. 4 is a schematic structural diagram of the whole device after installation in the embodiment of the invention.

FIG. 5 is a schematic view of the overall device structure before installation in another embodiment of the present invention;

fig. 6 is a schematic view of the structure of the whole device after installation in another embodiment of the invention.

FIG. 7 is a schematic view showing the structure of the entire apparatus before installation in the embodiment of the present invention without the second pressing portion;

FIG. 8 is a schematic view of the assembled device of the embodiment of the present invention without the second pressing portion;

FIG. 9 is a schematic view showing the structure of the whole device before installation in another embodiment of the present invention without the second pressing portion;

fig. 10 is a schematic view showing the structure of the whole device after installation in another embodiment of the present invention without the second pressing portion.

Reference numerals of the above figures: 1. a first sheet material; 2. a second sheet material; 3. a third sheet material; 4. a through hole; 5. a first body; 6. a second body; 7. a first embedding cavity; 8. a first pressing part; 9. a breaking portion; 10. a first abutting portion; 11. a third body; 12. a second abutting portion; 13. a second embedding cavity; 14. a second abutting portion; 15. a step portion.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, in the description of the present invention, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no precedence between the two is considered as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in fig. 1, the present embodiment discloses a connecting mechanism for connecting a plurality of plate materials, wherein the plurality of plate materials include a first plate material 1, a second plate material 2, and at least one third plate material 3 disposed between the first plate material 1 and the second plate material 2. A plurality of the plates are correspondingly provided with through holes 4, and at least one of the third plates 3 has elasticity. Specifically, in this embodiment, the plates are stacked up and down and are provided with three plates, and the first plate 1, the second plate 2 and the third plate 3 are all rectangular shapes with similar shapes, so that in the stacking process, the surfaces of the two adjacent plates can be completely or approximately completely attached together, and the subsequent pressing process is ensured, so that the stress uniformity of the first plate 1 and the second plate 2 is good, the deformation of the first plate 1 and the second plate 2 is reduced or avoided, and further the deformation of the elastic third plate 3 is influenced. Foretell the through-hole 4 extends along upper and lower direction, can adopt current drilling technique directly to process out circular through-hole 4 on first panel 1, second panel 2 and the third panel 3, and it is convenient to process, easy operation. Of course, the cross-sectional shape of the plate may be polygonal, circular or other shapes, and it is necessary to ensure the surface adhesion degree of two adjacent plates; the shape of the through hole 4 may be adapted according to the shape of the connecting member, such as a polygonal shape, and the like, which are not limited or described herein.

Referring to fig. 2 and 3, in the present embodiment, the connecting mechanism includes a first fastening device and a second fastening device. Wherein the first fastener means comprises a first body 5 and a second body 6. The inner side of the first body 5 is provided with a first embedding cavity 7, and the outer side of the first body 5 is provided with a first pressing part 8. Specifically, the first body 5 has 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 a circular hole shape. The first pressing portion 8 is located at an end of the first body 5 away from the second body 6, and extends outward in a direction perpendicular to an axis of the through hole 4. One end of the second body 6 is connected with the first body 5 in a breakable manner through a breaking part 9, the other end of the second body 6 is provided with a first abutting part 10, and the second body 6 can be inserted into the embedding cavity of the first body 5 after the breaking part 9 is broken and is fixedly connected with the first body 5. 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.

As described with reference to fig. 2 and 3, the second fastening device includes a third body 11, and the third body 11 has a second abutting portion 12, a second embedding cavity 13 formed inside the third body 11, and a second pressing portion disposed outside the third body 11. The second abutment 12 is intended to interfere with the first abutment 10, so as to break the breaking portion 9. Specifically, the third body 11 has 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 that 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 in the subsequent pressure applying process. The second pressing portion is located at an 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 in the extending direction of the second embedding cavity 13, wherein one of the end faces protrudes from the second pressing portion.

Referring to fig. 1, before installation, the first body 5 is inserted into the through hole 4, and after penetrating through the first plate 1, extends to the position of the through hole 4 formed in the third plate 3, and the second body 6 is received in the through hole 4 formed in the third plate 3. The upper end surface of the first pressing portion 8 abuts against the lower end surface of the first plate 1. The end face of the second pressing part protruding from the second body 6 passes through the second plate 2 and extends into the through hole 4 of the third plate 3, and the lower surface of the second pressing part is abutted to the upper surface of the second plate 2.

Referring to fig. 4, after installation, the first body 5 is inserted into the through hole 4, and extends to a position of the through hole 4 formed by the third plate 3 after penetrating through the first plate 1, and the outer side wall of the first body 5 is riveted with 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 is riveted with the first embedding cavity 7; the upper portion 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 embedded cavity 7, so that the second embedded cavity 13 can be inserted into the second embedded cavity and riveted with the second embedded cavity 13, and at the moment, the second body 6 protrudes out of the end face of the second pressing portion and is located above the first body 5 or abutted against the upper end face of the first body 5. The upper end surface of the first pressing part 8 is pressed into the first plate 1 and riveted with the first plate 1, and the lower surface of the first pressing part 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 material 2 and riveted with the second plate material 2, and the upper surface of the second pressing part is flush with the upper surface of the second plate material 2.

As shown in fig. 1 and 4, before installation, the first body 5 and the third body 11 are in clearance fit with the through holes 4 preset on the plate respectively; after installation, the first body 5 is subjected to plastic deformation in the radial direction under the extrusion of the second body 6 through the plastic property of the metal material, and forms an interference fit with the through hole 4; the third body can also be subjected to radial plastic deformation under the action of the stamping force, and then forms interference fit with the through hole 4. In summary, the connecting mechanism is not only suitable for occasions where the thickness of the connecting plates is greatly changed in the axial direction of the through holes 4, but also eliminates gaps in the radial direction of the through holes 4, so that the requirement of accurate positions of the through holes formed in each plate is met, and the structure is optimized.

In another embodiment, as shown in fig. 5, before installation, the first body 5 is inserted into the through hole 4, and after penetrating through the first plate 1, extends to the position of the through hole 4 formed in the third plate 3, and the second body 6 is received in the through hole 4 formed in the third plate 3. The upper end face of the first pressing portion 8 is abutted to a step face formed on the first plate 1, and the lower end face of the first pressing portion 8 is flush with the lower end face of the first plate 1. The end surface of the second body 6 protruding and the second pressing part extends into the through hole 4 of the third plate 3 through the second plate 2. The lower surface of the second pressing portion is abutted to a step surface formed on the second plate 2, and the upper surface of the second pressing portion is flush with the upper surface of the second plate 2. And the lower surface of the second pressing part is abutted against the upper surface of the second plate 2.

In another embodiment, as shown in fig. 6, after installation, the first body 5 is inserted into the through hole 4 and extends through the first plate 1 to the position of the through hole 4 formed in the third plate 3, and the outer side wall of the first body 5 is riveted with 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 is riveted with the first embedding cavity 7; the upper portion 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 embedded cavity 7, so that the second embedded cavity 13 can be inserted into the second embedded cavity and riveted with the second embedded cavity 13, and at the moment, the second body 6 protrudes out of the end face of the second pressing portion and is located above the first body 5 or abutted against the upper end face 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.

In another embodiment, as shown in fig. 7-10, the first body 5 or the third body 11 may not be provided with the first pressing portion 8 and the second pressing portion, but the cross-sectional dimension of the body without the pressing portion in the horizontal plane is larger than the dimension of the through hole 4 corresponding to the first pressing portion, so as to realize normal installation.

In this embodiment, the outer sidewall of the second body 6 is located inside the outer sidewall of the first body 5 before the fracture part 9 is fractured, so that the second body 6 can be inserted into the embedding cavity after being fractured in the stamping process. In the arrangement mode, the outer diameter of the second body 6 is slightly larger than the size of the first embedded cavity 7, in the stamping process, after the second body 6 is broken relative to the first body 5, the second body 6 can be conveniently inserted into the first embedded cavity 7 due to the size design, and on the other hand, the first body 5 can be riveted with the second body 6 according to the fluidity of metal, so that the fixed connection of the first body and the second body after being broken is completed.

In the present embodiment, the width of the breaking portion 9 is smaller than the width of the first body 5. In the above arrangement, in the stamping process, the force borne by the first body 5 is greater than the force borne by the fracture part 9, so that the first body 5 and the second body 6 can be fractured at the fracture part 9, and the second body 6 can move relative to the first body 5 to be inserted into the first embedding cavity 7.

Before breaking, the second body 6 is completely external to the first body 5, both of which have a length such as to form the overall length of the first fastener means; after the fracture, the part of the second body 6 is inserted into the embedding cavity of the first body 5, and the inserted part does not form the whole length of the first fastener device, that is, the length of the part on the diameter of the through hole 4 is the abdicating length, and the elastic third plate 3 can be compressed by the abdicating length. For example, if the length of the preset embedding cavity in the axial direction of the through hole 4 is set to 17 mm, the amount by which the third plate 3 is compressed after being pressed is approximately 17 mm. Preferably, the embedding cavity extends from a first end to a second end of the first body 5. The above arrangement makes it possible to fully exploit the entire length of the first body 5 in the direction of the axis of the through hole 4, thus allowing maximum compression of the third sheet 3, with an optimum structure. The length of the embedding cavity can be adjusted adaptively according to different requirements of the compressed amount of the third plate 3.

After the movement process, the broken first fastener device and the broken second fastener device can be fixedly connected with each other well through the fluidity of metal, and can be riveted with the plurality of plates, so that the connecting mechanism can bear large stress after the third plate is compressed.

In this embodiment, the first fastening device can move relative to the second fastening device, so that the third body 11 is abutted against the second body 6, and the second body 6 flows into the first embedding cavity 7 and the second embedding cavity 13 after the fracture part 9 is fractured, and is fixed with the first body 5 and the third body 11; the first body 5 and the third body 11 are flow-fixed to the plurality of plate materials after the fracture of the fracture part 9.

In this embodiment, the third plate 3 may be made of a polymer material having elasticity. The material arrangement described above enables the third sheet material 3 to be thinned during the pressing process, thereby achieving the desired thickness of the formed product after the pressing process.

In the present embodiment, the other end of the second body 6 has a stepped portion 15. In one mode, the step part 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 15 is flush with the end surface of the first body 5 after the second body 6 is inserted into the insertion cavity of the first body 5. Above-mentioned step portion 15's setting, at the in-process of punching press, through second body 6 with step portion 15's butt can bear great stamping force to avoid the punching press excessive, cause the damage to panel, improve the qualification rate of product.

In this embodiment, the fastening device is made of a metal material having plasticity. Specifically, the first body 5, the second body 6, the third body 11, the first pressing portion 8 and the second pressing portion are all made of plastic metal, so that in the stamping process, the riveting action is realized through the fluidity of the metal.

In this embodiment, the outer side wall of the second body 6 has a certain inclination shape, so as to have a certain guidance in the subsequent process of inserting the first embedding cavity 7, and the structure is optimized.

The working principle in the present embodiment includes the following steps:

inserting a first fastener means into the through hole 4 from a first side of the first sheet 1; at this time, the upper surface of the first pressing portion 8 abuts against the lower surface of the first plate material 1;

inserting second fastener means into the through hole 4 from a second side of the second sheet 2, wherein said first side faces away from said second side; at this time, the lower surface of the first pressing portion 8 abuts against the upper surface of the second plate material 2;

and pressing the first and second fastening means. So that the breaking part 9 is broken after the third body 11 collides with the second body 6, thereby causing the second body 6 to flow into the first embedding cavity 7 and the second embedding cavity 13 after the breaking part 9 is broken, so that the second body 6 is fixed with the first body 5 and the third body 11, respectively, and the first body 5 and the third body 11 are flow-fixed on the plurality of plates after the breaking part 9 is broken.

Specifically, under the action of the punching force, the third body 11 moves towards the second body 6 and can be abutted against the second body 6, at this time, the fracture part 9 fractures under the action of the punching force, and the second pressing part is pressed into the second plate 2 and moves downwards along with the second plate 2 synchronously; the second plate 2 continues to move downwards, and the second body 6 is inserted into the first embedding cavity 7 under the interference of the second plate 2; the second plate 2 continues to move downwards, when the body moves to the right position, the upper end part of the second body 6 is inserted into the second embedding cavity 13 under the action of the stamping force, and at the moment, the first pressing part 8 is pressed into the first plate 1.

The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. A fastener device, comprising:

the inner side of the first body is provided with a first embedding cavity;

the first pressing part is arranged on the outer side of the first body.

2. The fastener device of claim 1, wherein the width of the break portion is less than the width of the first body.

3. The fastener device of claim 1, wherein the outer side wall of the second body is located inside the outer side wall of the first body before the fracture portion is fractured.

4. The fastener device according to claim 1, wherein the other end of the second body has a stepped portion.

5. The fastener device according to claim 4, wherein the stepped portion is located outside the embedding cavity after the second body is inserted into the embedding cavity of the first body; or the step part is flush with the end face of the first body after the second body is inserted into the embedding cavity of the first body.

6. The fastener device of claim 1, wherein said fastener device is made of a metal material having plasticity.

7. The fastener device according to claim 1, wherein the inner side wall of the second body is positioned outside the inner side wall of the first body before the fracture of the fracture portion.

8. A fastener device, comprising:

a second pressing part disposed at an outer side of the third body.

9. The fastener device according to claim 8, wherein the third body has two end faces opposite to each other in the extending direction of the second insertion cavity, and one of the end faces protrudes from the second pressing portion.

10. The fastener device according to claim 8, wherein an inner wall of the third body forming the second embedding cavity is riveted with the second body after the breaking portion is broken.