Fastening connection, fastening mechanism, fastening mechanism connection device and connection method for fastening connection

Abstract

The application discloses a fastening connecting piece, a fastening mechanism, a device after the fastening mechanism is connected, and a connecting method for the fastening connecting piece. The connecting piece comprises a body, a flange part fixedly connected with one end of the body, and a torsion part sleeved outside part of the flange part. The torsion part and the flange part jointly form an annular space on the side of the body. The outer diameter of the annular space near one end of the torsion part is smaller than the outer diameter of the annular space near one end of the body. The end surface of the torsion part away from the body is flush with the end surface of the flange part away from the body. The application has at least the following advantages: the torsion part is added outside the flange part, the riveting area of the first plate is far away from the area affected by high-temperature processes such as welding, and proper annular space is reserved on the flange part. Therefore, the influence caused by the gap due to the excess material flowing to the lower plane of the flange part can be avoided, the combination of the connecting piece and the first plate is more firm and compact, and the strength of the connection is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fasteners, in particular to a buckling connecting piece, a buckling mechanism, a buckling mechanism connecting device and a connecting method for the buckling connecting piece. BACKGROUND

[0002] The conductive non-ferrous metal material is relatively soft, especially copper material with a large current, which is softer near the position subjected to high-temperature welding process.

[0003] The connecting piece is connected with the conductive non-ferrous metal such as copper material through a riveting process. The traditional connecting piece sets the torsion part on the outer circle close to the product flange head, and the buckling mechanism is close to the area affected by the high temperature of the previous process welding. Due to the influence of high temperature, the material strength and hardness of the area will be greatly reduced, so the buckling performance will be greatly reduced. At the same time, due to the downward pressure of the product, the material close to the buckling area will flow downward, especially for the material in the area affected by high temperature, the material has lower resistance to downward flow, so that a gap will be generated between the flange head lower plane and the plate. The traditional buckling connecting piece greatly reduces the connection strength of the copper material or other conductive materials, and generates deformation and gap, thereby causing adverse effects on the circuit current and further affecting the application performance in many aspects. SUMMARY

[0004] In order to overcome the defects in the prior art, the embodiments of the present application provide a buckling connecting piece, a buckling mechanism, a buckling mechanism connecting device and a connecting method for the buckling connecting piece, which are used to solve the problems of low connection strength and unstable performance of the existing buckling mechanism.

[0005] The embodiments of the present application disclose a buckling connecting piece, a buckling mechanism, a buckling mechanism connecting device and a connecting method for the buckling connecting piece. The connecting piece increases a torsion part on the outside of the flange part, so that the riveting area of the first plate material is away from the area affected by the high-temperature process such as welding, and a proper annular space is left on the flange part to avoid the influence caused by the gap generated by the flow of excess material to the flange lower plane, so that the connecting piece and the first plate material are combined more firmly and tightly, and the connection strength is improved.

[0006] The buckling connecting piece comprises:

[0007] a body;

[0008] a flange part fixedly connected to one end of the body, the diameter of the flange part being greater than the diameter of the body;

[0009] a torsion part, the torsion part being sleeved on the outside of part of the flange part;

[0010] The torsion part and the flange part jointly form an annular space towards one side of the body, and the outer diameter of the annular space near one end of the torsion part is smaller than the outer diameter of the annular space near one end of the body.

[0011] The end surface of the torsion part away from the body is flush with the end surface of the flange part away from the body.

[0012] Further, one end of the body near the torsion part also has a circular arc, which is concave inward and connected with the flange part.

[0013] Further, the torsion part can be a flower tooth or a polygon.

[0014] Further, the flower tooth can be convex rib-shaped, jagged, or spiral-shaped.

[0015] Further, the annular space has an included angle α between the outer edge and the axis, and the included angle α can be 0°-90°.

[0016] A fastening mechanism includes a first plate and a connecting piece connected with the first plate, the first plate is provided with a first hole and a second hole in communication with the first hole, the hole diameter of the first hole is larger than the hole diameter of the second hole, and the connecting piece includes:

[0017] A body;

[0018] A flange part fixedly connected with one end of the body;

[0019] A torsion part sleeved at one end of the flange part and fixedly connected with the flange part, the torsion part has a preset distance from the end surface of the body to the side of the flange part towards the body, and the preset distance is used to form an annular space in the radial direction;

[0020] The outer diameter of the torsion part is larger than the outer diameter of the first hole, and the outer diameter of the torsion part is larger than the outer diameter of the body;

[0021] The first plate can flow in the radial direction to flow into the annular groove after the torsion part is combined with the first hole and is riveted, so as to tightly connect the torsion part with the first hole, thereby connecting the first plate with the connecting piece.

[0022] Further, the material of the first plate can be copper or other conductive non-ferrous metal.

[0023] Further, the flange part is gap-fitted with the first hole, and the body is gap-fitted with the second hole.

[0024] Further, the end face of the torsion part away from the annular space is flush with the end face of the plate adjacent to the torsion part.

[0025] The torsion part is fastened to the part of the side wall of the first hole, the annular space is connected to the first hole below the torsion part, and the body is clearance fit with the second hole.

[0026] Further, the end face of the torsion part away from the annular space is away from the end face of the plate adjacent to the torsion part.

[0027] A connecting method for a fastening connector, comprising the following steps:

[0028] The first plate and the second plate are fixedly connected, wherein the first plate has a first hole, a second hole in communication with the first hole, and the hole diameter of the first hole is larger than that of the second hole; the second plate has a third hole in communication with the second hole;

[0029] The connector is sequentially passed through the second hole and the third hole from the first hole, and at this time, the flange part is located in the first hole, wherein the connector comprises a body, a flange part, and a torsion part formed on the outside of the flange part, and the annular space is formed between the flange part and the torsion part;

[0030] The connector is pressed, so that the torsion part on the connector flows into the first hole and is fastened to the side wall forming the first hole, and part of the side wall forming the first hole flows into the annular space.

[0031] Further, the material of the second plate can be copper or other conductive non-ferrous metal.

[0032] The beneficial effects of the present application are as follows:

[0033] The fastening connector can make the pressure riveting area of the first plate away from the area affected by high-temperature processes such as welding, and the appropriate annular space left on the flange part can avoid other effects caused by the gap due to the flow of excess material to the lower plane of the flange part, so that the combination of the connector and the first plate is more firm and compact, and the connection strength is improved.

[0034] In order to make the above and other objects, features and advantages of the present application more apparent and understandable, the following preferred embodiments are described in detail below, and the accompanying drawings are referred to, as follows. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to make the technical solutions of the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only need to be some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0036] Figure 1 is a structure diagram of the torsion part of the fastening connecting piece in the embodiment of the present application as a flower tooth;

[0037] Figure 2 is a structure diagram of the torsion part of the fastening connecting piece in the embodiment of the present application as a polygon;

[0038] Figure 3 is a structure diagram of the fastening mechanism in the embodiment of the present application;

[0039] Figure 4 is a sectional view of the fastening mechanism in the embodiment of the present application;

[0040] Figure 5 is a structure diagram of the fastening connecting piece in the embodiment of the present application with an additional torsion part;

[0041] Figure 6 is a structure diagram of the fastening connecting piece in the embodiment of the present application with the annular space arranged above the flange part;

[0042] Figure 7 is a structure diagram of the fastening connecting piece in the embodiment of the present application with the annular space arranged in the middle of the flange part;

[0043] Figure 8 is a structure diagram of the fastening connecting piece in the embodiment of the present application with the annular space arranged below the flange part;

[0044] Figure 9 is a structure diagram of the fastening connecting piece in the embodiment of the present application with the annular space arranged above and below the flange part.

[0045] The reference numerals of the above accompanying drawings are as follows: 1, first plate; 2, first hole; 3, second hole; 4, body; 5, flange part; 6, flower tooth; 7, polygon; 8, circular arc; 9, second plate; 10, third hole; 11, annular space. DETAILED DESCRIPTION

[0046] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0047] In the description of the present application, it should be noted that the terms "first", "second" and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more of the features.

[0048] The fastening connector described in the present application can make the pressure riveting area of the first plate material away from the area affected by high-temperature processes such as welding by adding a torsion part on the outside of the flange part, and at the same time leaving a proper annular space on the flange part, which can avoid the influence caused by the gap due to the excess material flowing to the lower plane of the flange part, so that the combination of the connector and the first plate material is more firm and compact, and the strength of the connection is improved.

[0049] The present application will be described in detail below with reference to the drawings and embodiments.

[0050] With reference to Figure 1 , Figure 2 The fastening connector described in the present embodiment includes a body 4. The body 4 can be cylindrical. One end of the body 4 is fixedly connected with a flange part 5. The flange part 5 can also be cylindrical. The diameter of the flange part 5 is larger than the diameter of the body 4. A torsion part is sleeved on the outside of part of the flange part 5. The torsion part can be a flower tooth 6 or a polygon 7. The torsion force and the thrust force of the flower tooth 6 or the polygon 7 are basically consistent when the connector is connected. The torsion part and the flange part 5 together form an annular space 11 on the side of the body 4, as indicated by the arrow. The outer diameter of the annular space 11 near one end of the torsion part is smaller than the outer diameter of the annular space 11 near one end of the body. The outer diameter of the annular space 11 is smaller than the outer diameter of the torsion part. The end face of the torsion part away from the body 4 is flush with the end face of the flange part 5 away from the body 4. The end face of the torsion part away from the body 4 can also be provided with a certain preset distance from the end face of the flange part 5 away from the body 4. Figure 1

[0051] Specifically, in the present embodiment, the body 4 has a circle of circular arcs 8 near one end of the torsion part. The circular arcs 8 are concave inward and connected with the flange part 5, so as to facilitate mold forming and reduce pressure riveting stress concentration when pressure riveting. ​

[0052] In a preferred embodiment, the flower tooth 6 can be in the shape of a convex rib, a sawtooth, or a spiral. The shape of the flower tooth 6 has no effect on the connection effect of the connecting piece.

[0053] With reference to the drawings Figure 5 In an alternative embodiment, the body 4 can further have a torsion portion near one end of the flange portion 5. The torsion portion can be in the form of a flower tooth 6 or a polygon 7. The torsion portion is added to increase the torsion and bonding force of the connecting piece during the press riveting.

[0054] Specifically, in the present embodiment, the ring-shaped space 11 has an included angle a between the outer edge and the axis thereof. The included angle a is generally in the range of 0°-90°, and can be appropriately increased according to the actual application and product processing technology. Those skilled in the art can adjust the range of the included angle a according to the different application performance and anti-pull-out force requirements of the fastening connecting piece, so as to make the anti-pull-out force of the fastening connecting piece better and the connection between the fastening connecting piece and the plate more firm. When the included angle a is small, it is convenient for workers to process the product; when the included angle a is large, the anti-pull-out force performance of the fastening connecting piece is better.

[0055] In combination Figure 3 , Figure 4 The application further discloses a fastening mechanism, which comprises a first plate 1 and a connecting piece connected with the first plate 1. The first plate 1 is made of copper or other conductive non-ferrous metal. The first plate 1 is provided with a first hole 2 and a second hole 3 in communication with the first hole 2. The diameter of the first hole 2 is larger than that of the second hole 3. The connecting piece comprises a body 4. The body 4 can be in the shape of a cylinder. One end of the body 4 is fixedly connected with a flange portion 5. One end of the flange portion 5 is sleeved with a torsion portion fixedly connected with the flange portion 5. The torsion portion can be in the form of a flower tooth 6 or a polygon 7. The torsion portion has a preset distance from the end face of the body 4 to the side of the flange portion 5 facing the body 4. The preset distance is used to form a ring-shaped space 11 in the radial direction. The ring-shaped space 11 is used to make the first plate 1 deform and flow into the ring-shaped space 11, so as to avoid the influence of the gap caused by the excess material flowing to the lower plane of the flange portion 5.

[0056] The outer diameter of the torsion portion is larger than the outer diameter of the first hole 2. The outer diameter of the torsion portion is larger than the outer diameter of the body 4. After the torsion portion and the first hole 2 are combined and press riveted, the first plate 1 can flow in the radial direction to flow into the ring-shaped groove, so that the torsion portion and the first hole 2 are tightly connected, thereby connecting the first plate 1 and the connecting piece.

[0057] Specifically, in this embodiment, the material of the first plate 1 can be copper or other conductive non-ferrous metals.

[0058] Specifically, in this embodiment, the flange 5 is clearance-fitted with the first hole 2 so that the gap between the flange 5 and the first hole 2 allows the deformed plate to flow in. The body 4 is clearance-fitted with the second hole 3 so that the body 4 can pass through the first hole 2 and the second hole 3 to connect with the second plate 9.

[0059] Specific reference Figure 6 , Figure 7 , Figure 8 , Figure 9 In an optional embodiment, the annular space 11 may also be disposed above the flange portion 5. Figure 6 ),middle( Figure 7 ), lower-middle ( Figure 8 ),up and down( Figure 9 This can occur at multiple locations and in multiple layers. The outer edge of the annular space 11 can also have an angle α with its axis. The angle α is 0°. The position of the annular space 11 does not affect the inflow of the deformable material from the sheet metal.

[0060] In another alternative implementation, Figure 6 , Figure 7 , Figure 8 , Figure 9 The outer edge of the annular space 11 can also have an included angle α with its axis. The included angle α typically ranges from 0° to 90°, but can be appropriately increased depending on the actual application and product processing technology. Those skilled in the art can adjust the range of the included angle α according to the different application performance and anti-pull force requirements of the fastening connector, so as to improve the anti-pull force of the fastening connector and make the connection between the fastening connector and the sheet metal more secure. When the included angle α is small, it facilitates product processing by workers; when the included angle α is large, the anti-pull force performance of the fastening connector is better.

[0061] This application also discloses a fastening mechanism connection device, wherein the torque portion is fastened to a portion of the sidewall of the first hole 2. The annular space 11 is connected to the first hole 2 located below the torque portion. The body 4 is clearance-fitted with the second hole 3.

[0062] Specifically, in this embodiment, the end face of the torsion part away from the annular space 11 is at a certain distance from the end face of the plate adjacent to the torsion part.

[0063] This application also discloses a connection method for fastening connectors, including the following steps:

[0064] Firstly, the first plate 1 and the second plate 9 are fixedly connected, wherein the first plate 1 has a first hole 2 and a second hole 3 communicated with the first hole 2, the aperture of the first hole 2 is larger than the aperture of the second hole 3; the second plate 9 has a third hole 10 communicated with the second hole 3;

[0065] Secondly, the connecting piece is sequentially passed through the first hole 2, the second hole 3 and the third hole 10, at this time, the flange part 5 is located in the first hole 2, wherein the connecting piece comprises a body 4, a flange part 5 and a torsion part formed on the outer side of the flange part 5, and an annular space 11 is formed between the flange part 5 and the torsion part;

[0066] Finally, Figure 4 The place indicated by the arrow is the place where the first plate and the second plate are high-temperature welded, the connecting piece is pressed, so that the torsion part on the connecting piece flows into the first hole 2 and is tightly connected with the side wall forming the first hole 2, and part of the side wall forming the first hole 2 flows into the annular space 11.

[0067] The connecting method for fastening the connecting piece is simple and fast, and can greatly improve the processing efficiency and production yield.

[0068] Specifically, in the embodiment, the die for pressing the connecting piece and the plate comprises an upper die and a lower die. The upper die is placed on the end face of the torsion part. The upper die is a flat die. The size of the upper die is slightly smaller than the diameter of the torsion part. The lower die is sleeved on the end of the body 4 away from the torsion part and abuts against the end face of the plate away from the torsion part.

[0069] Specifically, in the embodiment, the material of the second plate 9 can be copper or other conductive non-ferrous metal.

[0070] The principle and implementation mode of the present application are described by specific embodiments in the present application, and the above embodiment is only used to help understand the technical scheme and core idea of the present application; meanwhile, for the general skilled person in the art, according to the idea of the present application, the specific implementation mode and application range will be changed, and the above description should not be understood as the limitation of the present application.

Claims

1. A fastening connector, characterized in that, include: ontology; A flange portion fixedly connected to one end of the body, wherein the diameter of the flange portion is larger than the diameter of the body; Torque section, the torque section being sleeved on the outside of a portion of the flange portion; The torsion section and the flange section together form an annular space on the side facing the body. The outer diameter of the annular space near the end of the torsion section is smaller than the outer diameter of the annular space near the end of the body. The end face of the torque section away from the body is flush with the end face of the flange section away from the body. The torque section is used to rivet the first plate, the end face of the first plate protruding from the flange and away from the end face of the body along the axial direction; the second plate is sleeved on the outside of the body, and its end face along the axial direction towards the torque section is used to directly weld with the end face of the first plate along the axial direction towards the body; the welding connection of the first plate and the second plate is performed before the riveting of the torque section to the first plate.

2. The fastening connector according to claim 1, characterized in that, The body also has an arc at one end near the torsion part, the arc being concave inward and connected to the flange part.

3. The fastening connector according to claim 1, characterized in that, The torque component is either toothed or polygonal.

4. The fastening connector according to claim 3, characterized in that, The flower teeth are convex, serrated, or spiral.

5. The fastening connector according to claim 1, characterized in that, The outer edge of the annular space has an angle α between it and its axis, and the value of the angle α ranges from 0° to 90°.

6. A fastening mechanism, comprising a first plate and a connector connected to the first plate, characterized in that, The first plate has a first hole and a second hole communicating with the first hole. The diameter of the first hole is larger than the diameter of the second hole. The connector includes: ontology; A flange portion that is fixedly connected to one end of the main body; A torque portion is sleeved on one end of the flange portion and fixedly connected to the flange portion. The torque portion has a preset distance from the end face of the body to the side of the flange portion facing the body. The preset distance is used to form an annular space in the radial direction. The outer diameter of the torque section is larger than the outer diameter of the first hole, and the outer diameter of the torque section is larger than the outer diameter of the body. The first plate can flow radially into the annular space after the torsion part is engaged with the first hole and riveted, so that the torsion part is fastened to the first hole, thereby connecting the first plate to the connector; the end face of the first plate away from the first hole along the axial direction is used for direct welding to the second plate; wherein, the welding connection of the first plate and the second plate is performed before the riveting of the torsion part to the first plate.

7. The fastening mechanism according to claim 6, characterized in that, The first plate is made of copper or other conductive non-ferrous metals.

8. The fastening mechanism according to claim 6, characterized in that, The flange portion is clearance-fitted with the first hole, and the body portion is clearance-fitted with the second hole.

9. A fastening mechanism connection device, characterized in that, With the fastening mechanism as described in any one of claims 6 to 8, the torque portion is fastened to a portion of the sidewall of the first hole, the annular space is connected to the first hole located below the torque portion, and the body is clearance-fitted with the second hole.

10. The fastening mechanism connection device according to claim 9, characterized in that, The end face of the torsion section away from the annular space is at a certain distance from the end face of the second plate adjacent to the torsion section.

11. A connection method for fastening connectors, characterized in that, Includes the following steps: The opposing end faces of a first plate and a second plate are directly welded together. The first plate has a first hole and a second hole communicating with the first hole. The diameter of the first hole is larger than the diameter of the second hole. The end face of the first plate used for welding with the second plate is away from the first hole. The second plate has a third hole communicating with the second hole. The connector is passed through the first hole, the second hole, and the third hole in sequence. The connector includes a body, a flange, and a torque portion formed on the outside of the flange. At this time, the flange is located in the first hole, and an annular space is formed between the flange and the torque portion. Pressure is applied to the connector, causing the torque portion on the connector to flow into the first hole and be securely connected to the sidewall forming the first hole, while simultaneously causing a portion of the sidewall forming the first hole to flow into the annular space; the welding connection of the first plate and the second plate is performed before the riveting of the torque portion to the first plate.

12. The connection method for fastening connectors according to claim 11, characterized in that, The second plate is made of copper or other conductive non-ferrous metals.

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