Terminal connection structure sleeve riveting device and riveting method thereof

Abstract

The present invention relates to a riveting device and riveting method for a terminal connection structure, comprising a riveting head and a riveting sleeve, wherein the riveting head comprises a large-diameter end shaft section and a small-diameter end riveting head, and a limiting shaft shoulder is provided between the large-diameter end shaft section and the small-diameter end riveting head; the riveting sleeve comprises a large-diameter cylinder and a small-diameter cylinder, and a stepped bottom shoulder is provided between the inner side of the large-diameter cylinder and the small-diameter cylinder; the riveting head and the riveting sleeve are elastically matched in the up-down direction, and when compressed, the bottom shoulder can limit the limiting shaft shoulder upward; the lower end of the small-diameter end riveting head is provided with a bottom riveting surface, and the lower end of the small-diameter cylinder is provided with a bottom tube edge, and the bottom riveting surface and the bottom tube edge are both used to rivet the terminal and the connecting sheet body, and when not compressed, the bottom tube edge is lower than the bottom riveting surface. In this way, a better riveting effect is achieved.

Description

Technical Field

[0001] The invention relates to a terminal connection structure sleeve riveting device and a riveting method for a power instrument, in particular to a terminal connection structure sleeve riveting device and a riveting method for the field of electric energy transmission. Background Art

[0002] The connection structure between the device and the terminal button with Chinese invention patent No. 201220223267.3 discloses a riveted structure composed of a columnar joint and a device connection hole. The connection plane of the device in this structure and the bottom cone plane of the columnar joint are in close contact with each other to further reduce the contact resistance between the two. However, since the connection state of the material molecules of the two cannot be achieved, there is always a certain contact resistance between the two, and contact with near-zero resistance cannot be achieved, there is a certain power consumption, and power resources are wasted.

[0003] There is another type of connection in the prior art, which is to directly add welding pieces, but it requires complex positioning tooling, and the welding is prone to deformation, affecting the dimensional accuracy of the product; the hot melt welding process is difficult to achieve consistency, especially in the case of vibration, distortion, deformation, thermal expansion and contraction, etc., which may cause loosening or falling off, seriously affecting the reliability of the connection.

[0004] In addition, an electrical connection structure can also be set up, including a terminal button and a connecting plate, the terminal button is provided with a top column, and the connecting plate is provided with a connecting hole for riveting the top column. How to achieve the best riveting between the top column and the connecting hole is a problem that technical personnel in this field have been exploring.

[0005] Therefore, it is necessary to improve the prior art to solve the above technical problems. Summary of the invention

[0006] The object of the present invention is to provide a riveting device and a riveting method for a terminal connection structure sleeve that can achieve better riveting effect.

[0007] In order to achieve the above technical objectives, the present invention adopts the following technical methods: a terminal connection structure sleeve riveting device, the terminal connection structure includes a terminal and a connecting plate, a top column and a connecting hole for matching with each other are provided between the terminal and the connecting plate, the terminal connection structure sleeve riveting device is used to rivet the top column and the connecting hole to position, including an axially extending riveted head and a riveting sleeve sleeved on the riveted head, the riveted head includes a large diameter end shaft section and a small diameter end riveted head further extending downward from the large diameter end shaft section, a downward limiting shoulder is provided on the outer side of the connection between the large diameter end shaft section and the small diameter end riveted head; The riveting sleeve comprises a large diameter cylinder portion for being sleeved on the outside of the large diameter end shaft section and a small diameter cylinder portion extending downward from the large diameter shaft cylinder for being sleeved on the outside of the small diameter end rivet head; an upward step-shaped bottom shoulder is provided at the connection between the inner side of the large diameter cylinder portion and the inner side of the small diameter cylinder portion; the rivet head and the riveting sleeve are elastically matched in the up and down directions, and when compressed, the bottom shoulder can limit the limiting shaft shoulder upward; a bottom riveting surface is provided at the lower end of the small diameter end rivet head, and a bottom tube edge is provided at the lower end of the small diameter cylinder portion, and the bottom riveting surface and the bottom tube edge are both used for riveting the terminal button and the connecting sheet body, and when not compressed, the bottom tube edge is lower than the bottom riveting surface.

[0008] As a further improvement of the present invention, when the sleeve riveting device of the terminal connection structure is compressed, the bottom end sleeve edge is lower than the bottom end riveting surface.

[0009] As a further improvement of the present invention, the terminal connection structure sleeve riveting device is used to rivet a riveted groove around the periphery of the top column on the connecting sheet body.

[0010] As a further improvement of the present invention, the riveting sleeve is provided with a positioning groove extending up and down, and the riveting head is provided with a positioning pin extending left and right and capable of sliding up and down in the positioning groove.

[0011] As a further improvement of the present invention, the riveted joint is provided with a supporting shoulder located above the large diameter end shaft section, and the elastic member is a spring, one end of the spring supports the supporting shoulder upward, and the other end supports the large diameter cylinder downward.

[0012] As a further improvement of the present invention, the top column can be accommodated in the small-diameter cylinder, and the bottom cylinder edge can be crimped onto a connecting sheet body at the periphery of the connecting hole.

[0013] As a further improvement of the present invention, a mounting shaft is provided above the riveting head, the mounting shaft is assembled to the riveting machine by plugging, and the terminal connection structure sleeve riveting device is connected to the radial riveting machine.

[0014] The present invention can also adopt the following technical solutions:

[0015] A riveting method for a terminal connection structure sleeve riveting device includes the above-mentioned terminal connection structure sleeve riveting device. When the terminal connection structure sleeve riveting device is riveted, the bottom end sleeve edge of the riveting sleeve first contacts the connecting plate body, and the bottom end sleeve edge surrounds the outer periphery of the top column, further pressing down the terminal connection structure sleeve riveting device, and when the limiting shaft shoulder and the bottom shoulder overlap each other, the riveting head and the riveting sleeve simultaneously rivet the top column body and the connecting plate body.

[0016] As a further improvement of the present invention, during riveting, the riveting sleeve forms a riveted groove on the connecting plate body outside the top column, and the material of the riveted groove is squeezed downward and around the riveted groove to further tightly connect the connecting plate body and the top column side.

[0017] As a further improvement of the present invention, the terminal connection structure sleeve riveting device is connected to a radial riveting machine, and the radial riveting machine causes the terminal connection structure sleeve riveting device to move around the center line of the top column in a multi-petal plum blossom trajectory, so that the riveted material in the contact area between the riveted head and the top column reaches the yield point, forming a non-slip rolling.

[0018] Compared with the prior art, the riveted joint of the present invention comprises a large-diameter end shaft section and a small-diameter end riveted joint extending further downward from the large-diameter end shaft section, and a downward limiting shoulder is provided on the outer side of the connection between the large-diameter end shaft section and the small-diameter end riveted joint; the riveted sleeve comprises a large-diameter cylinder portion for sleeved on the outer side of the large-diameter end shaft section and a small-diameter cylinder portion extending downward from the large-diameter shaft cylinder for sleeved on the outer side of the small-diameter end riveted joint, and an upward stepped bottom shoulder is provided at the connection between the inner side of the large-diameter cylinder portion and the inner side of the small-diameter cylinder portion; the riveted joint and the riveted sleeve are elastically matched in the upper and lower directions, and when compressed, the bottom shoulder can limit the limiting shoulder upward; the lower end of the small-diameter end riveted joint is provided with a bottom riveting surface, and the lower end of the small-diameter cylinder portion is provided with a bottom cylinder edge, and the bottom riveted surface and the bottom cylinder edge are both used to rivet the terminal button and the connecting sheet body, and when not compressed, the bottom cylinder edge is lower than the bottom riveted surface. With such arrangement, when the bottom end tube edge just contacts the connecting plate body, the connecting plate body and the terminal button are tightly pressed under the action of elastic force, and when the bottom shoulder and the limiting shaft shoulder are in a coincident state, the rivet sleeve and the rivet head simultaneously play a riveting role, achieving a better riveting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional combined diagram of the sleeve riveting device of the terminal button connection structure of the present invention;

[0020] Figure 2 It is a three-dimensional exploded view of the sleeve riveting device of the terminal connection structure of the present invention.

[0021] Figure 3It is a partial cross-sectional view of the sleeve riveting device of the terminal connection structure of the present invention.

[0022] Figure 4 It is another partial sectional view of the sleeve riveting device of the terminal connection structure of the present invention.

[0023] Figure 5 It is a partial cross-sectional view of the terminal connection structure sleeve riveting device of the present invention when it is just mated with the terminal connection structure.

[0024] Figure 6 It is a partial cross-sectional view of the sleeve riveting device of the terminal connection structure of the present invention when it is further coordinated with the terminal connection structure.

[0025] Figure 7 This is a schematic diagram of the terminal connection structure of the present invention before installation.

[0026] Figure 8 It is a partial three-dimensional cross-sectional view of the sleeve riveting device of the terminal connection structure of the present invention during riveting.

[0027] Fig. 9 It is a front view of the terminal connection structure of the present invention after the sleeve riveting device has riveted a terminal.

[0028] Fig.10 It is a three-dimensional combination diagram of the terminal connection structure sleeve riveting device of the present invention when pre-riveting another terminal.

[0029] Fig.11 It is a three-dimensional combination diagram of the sleeve riveting device of the terminal connection structure of the present invention when it is riveting another terminal.

[0030] Fig.12 This is a three-dimensional composite diagram of the terminal connection structure of the present invention after the sleeve riveting device has riveted two terminal blocks.

[0031] Fig.13 This is a three-dimensional structural diagram of the wiring terminal connection structure of the present invention during pre-installation.

[0032] Fig.14 This is a front view of the wiring terminal connection structure of the present invention when it is pre-installed.

[0033] Fig.15 It is a three-dimensional structural diagram of the terminal connection structure of the present invention after riveting is completed.

[0034] Fig.16 The terminal connection structure of the present invention is riveted when it is completed. Fig.14 Side cross-sectional view at AA.

[0035] Fig.17It is a schematic diagram of the multi-petal plum blossom-shaped trajectory of the sleeve riveting device of the terminal connection structure of the present invention during riveting.

[0036] Reference numerals:

[0037] Terminal connection structure sleeve riveting device 100

[0038] Rivet head 1 Mounting shaft 10

[0039] Supporting shoulder 11 Large diameter end shaft section 12

[0040] Positioning hole 121 Limiting shoulder 13

[0041] Small diameter end riveting head 14 bottom end riveting surface 141

[0042] Elastic part 2 Riveting sleeve 3

[0043] Large diameter cylinder 31 positioning groove 311

[0044] Bottom shoulder 32 Small diameter tube 33

[0045] Bottom tube edge 331 positioning pin 34

[0046] Terminal connection structure 200 Terminal 4

[0047] Main body 41 Top column 42

[0048] Side plane 43 Connecting plate 5

[0049] Connection hole 51 Riveted groove 52

[0050] Bottom 421 DETAILED DESCRIPTION

[0051] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0052] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0053] Techniques and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the techniques and equipment should be considered part of the specification.

[0054] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0055] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0056] Please refer to Figures 1 to 17 As shown, the present invention provides a schematic structural diagram of a sleeve riveting device 100 for a terminal connection structure. The present invention provides a sleeve riveting device 100 for a terminal connection structure, wherein the terminal connection structure 200 includes a terminal 4 and a connecting plate 5, wherein the terminal 4 is composed of a main body 41 and a top column 42 protruding upward, and a top column 42 and a connecting hole 51 for cooperating with each other are provided between the terminal 4 and the connecting plate 5, wherein the sleeve riveting device 100 for the terminal connection structure is used to rivet and position the top column 42 and the connecting hole 51, and comprises an axially extending riveting head 1 and a riveting sleeve 3 sleeved on the riveting head 1, wherein the riveting head 1 comprises a large-diameter end shaft section 12 and a small-diameter end riveting head 141 further extending downward from the large-diameter end shaft section 12, and a downward limiting shaft shoulder 13 is provided on the outer side of the connection between the large-diameter end shaft section 12 and the small-diameter end riveting head 141; wherein the riveting head 1 comprises a large-diameter end shaft section 12 and a small-diameter end riveting head 141 ... small-diameter end riveting head 14 The connecting sleeve 3 includes a large diameter cylinder portion 31 for being sleeved on the outside of the large diameter end shaft section 12 and a small diameter cylinder portion 33 extending downward from the large diameter shaft cylinder for being sleeved on the outside of the small diameter end rivet head 141, and an upward stepped bottom shoulder 32 is provided at the connection between the inner side of the large diameter cylinder portion 31 and the inner side of the small diameter cylinder portion 33; the rivet head 1 and the rivet sleeve 3 are elastically matched in the up and down directions, and when compressed, the bottom shoulder 32 can limit the limiting shaft shoulder 13 upward; the lower end of the small diameter end rivet head 141 is provided with a bottom riveting surface 141, and the lower end of the small diameter cylinder portion 33 is provided with a bottom tube edge 331, the bottom riveting surface 141 and the bottom tube edge 331 are both used for riveting the terminal button 4 and the connecting plate body 5, and when not compressed, the bottom tube edge 331 is lower than the bottom riveting surface 141. With such arrangement, when the bottom end tube edge 331 just contacts the connecting plate body 5, the connecting plate body 5 and the terminal button 4 are pressed tightly under the action of elastic force, and when the bottom shoulder 32 and the limiting shaft shoulder 13 are in a coincident state, the riveting sleeve 3 and the riveting head 1 simultaneously play a riveting role.

[0057] Preferably, when the terminal connection structure sleeve riveting device 100 is compressed, the bottom sleeve edge 331 is lower than the bottom riveting surface 141. In this way, when the riveting sleeve 3 and the riveting head 1 simultaneously play a riveting role, the pressure of the riveting sleeve 3 on the connecting sheet 5 can cause the material of the connecting sheet 5 to expand downward and around (such as Fig.16As shown in the figure, the material of the connecting sheet 5 is in closer contact with the top column 42 after riveting, ensuring that during the entire riveting process, the top column 42 only expands in the connecting hole 51 due to the rapid deformation of the top column 42, and the material of the connecting sheet 5 is not in full contact with the bottom surface 421 of the top column 42. Of course, in other embodiments of the present invention, the bottom tube edge 331 may not be lower than the bottom riveting surface 141, so that there is no need to squeeze and expand the material of the connecting sheet 5 downward and around, and the final riveting effect can be compared. Fig.13 As shown, it is sufficient to achieve riveting of the top column 42 .

[0058] Specifically, Fig.15 As shown, the terminal connection structure sleeve riveting device 100 is used to rivet a post-riveting groove 52 around the periphery of the top column 42 on the connecting sheet 5. In this way, the material of the connecting sheet 5 located on the periphery of the top column 42 can be squeezed downward and around, and evenly distributed below the bottom surface 421 of the top column 42 after riveting, so as to achieve a more stable riveting.

[0059] The riveting sleeve 3 is provided with a positioning groove 311 extending up and down, and the riveting head 1 is provided with a positioning pin 34 extending left and right and capable of sliding up and down in the positioning groove 311. In this way, the positioning groove 311 and the positioning pin 34 are slidably matched, and the riveting head 1 can be restricted from moving up and down on the riveting sleeve 3 without rotating, thereby ensuring a better riveting effect and preventing the riveting sleeve 3 from being separated from the riveting head 1 up and down.

[0060] Specifically, the large diameter end shaft section 12 is provided with a positioning hole 121 penetrating left and right, the positioning pin 34 is passed through the positioning hole 121, and the large diameter cylinder 31 is provided with positioning grooves 311 extending up and down on both sides to slidably accommodate the two ends of the positioning pin 34. Such a configuration is convenient for manufacturing and assembly, and is conducive to the overall structural stability.

[0061] In a specific embodiment, the elastic member 2 is a spring, and the spring sleeve is received on the large-diameter end shaft section 12. Such a configuration facilitates assembly and positioning.

[0062] The riveted joint 1 is provided with a supporting shoulder 11 located above the large diameter end shaft section 12, one end of the elastic member 2 is supported upward on the supporting shoulder 11, and the other end is supported downward on the large diameter cylinder 31. With this arrangement, the elastic member 2 is easy to install and can be more firmly supported in the vertical direction. The supporting shoulder 11 has no limitation on shape, as long as it can support the elastic member 2 downward.

[0063] In the specific riveting process, the top column 42 can be accommodated in the small diameter cylinder 33, and the bottom end cylinder edge 331 can be pressed on the connecting sheet 5 outside the connecting hole 51. Such a configuration can ensure that the riveting head 1 can rivet the top column 42, and the riveting sleeve 3 can squeeze and expand the material of the connecting sheet 5.

[0064] The top column 42 is cylindrical, and a side plane 43 is provided on the side. In this way, the connecting piece 5 can be more firmly pre-positioned on the top column 42, ensuring that the terminal 4 and the connecting piece 5 are displaced during the riveting process.

[0065] A mounting shaft 10 is arranged above the riveting head 1, and the mounting shaft 10 is assembled to the riveting machine by plugging. In this way, the upper end of the riveting head 1 is mounted on the riveting machine, and the riveting head 1 can be moved by the riveting machine to realize riveting.

[0066] The terminal connection structure sleeve riveting device 100 is connected to a radial rotary riveting machine, and the radial rotary riveting machine makes the terminal connection structure sleeve riveting device 100 move around the center line of the top column 42 in a multi-petal plum blossom trajectory, so that the riveted material in the contact area between the riveted head 1 and the top column 42 reaches the yield point, forming a non-sliding rolling. The radial riveting machine is an eccentric gear shaft and a spherical pair, forming an angled plum blossom-shaped movement. The riveted head 1 does not rotate, so it has high safety performance, high finish after riveting, and can be riveted without tooling to fix the product. With this arrangement, the riveting quality is good, the molding is complete, uniform and stable, the surface is bright and smooth, there is no internal crack and internal stress accumulation, there is no rebound when deformed, low consumption and high efficiency, convenient and reliable, and a variety of materials and shapes can be processed, so as to meet various process requirements.

[0067] Specifically, the advantages are as follows:

[0068] 1. High riveting quality. Due to the adoption of radial riveting technology, the riveted head 1 does not rotate during the riveting process. After riveting, the surface finish of the top column 42 is high, and the coating thereon can be effectively protected.

[0069] 2. Good safety. The rivet head of the swing riveting machine rotates during riveting, so a reliable fixture needs to be designed to prevent the workpiece from being thrown away during riveting, or even injuring the operator. However, the radial riveting machine is very safe and can rivet products without fixtures.

[0070] 3. It has a wide range of applications. In addition to the areas that can be processed by the swing-roll riveting machine, it can also rivet semi-enclosed rivets, such as rivets in lock shells; static pressure stop rivets; such as universal joints; rivets with a relatively large length-diameter ratio, such as car wipers. In particular, it requires inner and outer flanged rivets with good processability. It can also rivet plastic and ceramic materials.

[0071] Of course, in other embodiments of the present invention, the terminal connection structure sleeve riveting device 100 can also be arranged on a swing-type riveting machine or other types of riveting machines, as long as riveting can be achieved.

[0072] The present invention also protects a riveting method for a terminal connection structure sleeve riveting device 100, referring to Figures 7 to 12 The present invention is a riveting process, including the above-mentioned terminal connection structure sleeve riveting device 100. When the terminal connection structure sleeve riveting device is riveted, the bottom end barrel edge 331 of the riveting sleeve 3 first contacts the connecting sheet 5, and the bottom end barrel edge 331 surrounds the outer periphery of the top column 42. In this way, the connecting sheet 5 and the terminal 4 can be pre-positioned. The terminal connection structure sleeve riveting device 100 is further pressed down. When the limiting shoulder 13 and the bottom shoulder 32 overlap each other, the riveting head 1 and the riveting sleeve 3 simultaneously rivet the top column 42 and the connecting sheet 5. In this way, pre-positioning and formal riveting can be achieved during riveting, thereby improving the riveting accuracy and riveting efficiency.

[0073] Preferably, during riveting, the riveting sleeve 3 forms a riveted groove 52 on the connecting sheet 5 outside the top column 42, and the material of the riveted groove 52 is squeezed downward and around the riveted groove 52, so that the connecting sheet 5 is further tightly connected to the top column 42. Such a configuration greatly improves the riveting effect, makes the riveting more stable and tight, and achieves better zero-resistance contact.

[0074] As a further improvement of the present invention, the terminal connection structure sleeve riveting device is connected to a radial riveting machine (not shown), and the radial riveting machine causes the terminal connection structure sleeve riveting device to move around the center line of the top column in a multi-petal plum blossom trajectory. Fig.17 The multi-petal plum blossom motion trajectory shown is to make the riveted material in the contact area between the riveted head and the top column reach the yield point, forming a non-sliding rolling. In this way, the riveting quality is good, the molding is complete, uniform and stable, the surface is bright and smooth, there is no internal cracks and internal stress accumulation, deformation has no rebound, low consumption and high efficiency, convenient and reliable, and can process a variety of materials and shapes, and meet various process requirements. The number of petals in the multi-petal plum blossom motion trajectory is not limited.

[0075] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0076] A series of directional words such as front, back, left, right, up, and down used in the technical features of the above-described embodiments are only used to facilitate the description and understanding of the various technical features and do not constitute a limitation on specific directions in the actual use of the technical solutions.

[0077] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A sleeve riveting device for a terminal connection structure, used for riveting the top column of the terminal and the connecting hole of the connecting sheet body that are plugged into each other, characterized in that: It comprises an axially extending riveted head and a riveting sleeve sleeved on the riveted head, the riveted head comprises a large-diameter end shaft section and a small-diameter end riveted head further extending downward from the large-diameter end shaft section, and a downward limiting shaft shoulder is provided on the outer side of the connection between the large-diameter end shaft section and the small-diameter end riveted head; the riveting sleeve comprises a large-diameter barrel portion sleeved on the outer side of the large-diameter end shaft section and a small-diameter barrel portion extending downward from the large-diameter shaft barrel and sleeved on the outer side of the small-diameter end riveted head, and an upward step-shaped bottom shoulder is provided at the connection between the inner side of the large-diameter barrel portion and the inner side of the small-diameter barrel portion; An elastic part is provided between the rivet head and the rivet sleeve in the upper and lower directions. When compressed, the bottom shoulder can limit the limiting shaft shoulder upward; the lower end of the small-diameter end rivet head is provided with a bottom riveting surface, and the lower end of the small-diameter cylinder is provided with a bottom cylinder edge. The bottom riveting surface and the bottom cylinder edge are both used for riveting the terminal button and the connecting plate body. When not compressed, the bottom cylinder edge is lower than the bottom riveting surface. The terminal button connecting structure sleeve riveting device is used to rivet a riveted rear groove around the periphery of the top column on the connecting plate body.

2. A sleeve riveting device for a terminal connection structure according to claim 1, characterized in that: When the sleeve riveting device of the terminal connection structure is compressed, the bottom end sleeve edge is lower than the bottom end riveting surface.

3. A sleeve riveting device for a terminal connection structure according to claim 1, characterized in that: The riveting sleeve is provided with a positioning groove extending up and down, and the riveting head is provided with a positioning pin extending left and right and capable of sliding up and down in the positioning groove.

4. A sleeve riveting device for a terminal connection structure according to claim 1, characterized in that: The riveted joint is provided with a supporting shoulder located above the large-diameter end shaft section, and the elastic member is a spring, one end of the spring supports the supporting shoulder upward, and the other end supports the large-diameter cylinder downward.

5. A sleeve riveting device for a terminal connection structure according to claim 1, characterized in that: The top column can be accommodated in the small-diameter cylinder, and the bottom cylinder edge can be pressed onto the connecting sheet body at the periphery of the connecting hole.

6. A sleeve riveting device for a terminal connection structure according to claim 1, characterized in that: A mounting shaft is provided above the riveting head, and the mounting shaft is assembled to the riveting machine by plugging, and the terminal connection structure sleeve riveting device is connected to the radial riveting machine.

7. A riveting method for a terminal connection structure sleeve riveting device, characterized in that: The invention comprises a terminal connection structure sleeve riveting device as claimed in any one of claims 1 to 6, wherein when the terminal connection structure sleeve riveting device is riveted, the bottom end sleeve edge of the riveting sleeve first contacts the connecting plate body, and the bottom end sleeve edge surrounds the outer periphery of the top column, further pressing down the terminal connection structure sleeve riveting device, and when the limiting shaft shoulder and the bottom shoulder overlap each other, the riveting head and the riveting sleeve simultaneously rivet the top column body and the connecting plate body.

8. A riveting method for a terminal connection structure sleeve riveting device according to claim 7, characterized in that: During riveting, the riveting sleeve forms a riveted groove on the connecting piece body outside the top column, and the material of the riveted groove is squeezed downward and around the riveted groove, so that the connecting piece body and the top column are further tightly connected laterally.

9. A riveting method for a terminal connection structure sleeve riveting device according to claim 7, characterized in that: The terminal connection structure sleeve riveting device is connected to a radial riveting machine, and the radial riveting machine causes the terminal connection structure sleeve riveting device to move around the center line of the top column in a multi-petal plum blossom trajectory, so that the riveted material in the contact area between the riveted head and the top column reaches the yield point, forming a non-slip rolling.

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