Cylindrical stamping terminal

Abstract

The utility model discloses a cylindrical stamping terminal, which is used for connecting a matching terminal and a transition terminal, and comprises an insertion part, a transition part and a fixing part which are connected in sequence, and a sealing structure which is arranged on at least part of the transition part in an injection molding manner and is arranged in a protruding manner, the insertion part and the fixing part are made of plate-shaped materials and are curled into a cylindrical shape, and the sealing structure is arranged on the transition part in an injection molding manner. According to the technical scheme, the fixed part is provided with a threaded structure which is used for being in threaded connection and electrically connected with the transition terminal, so that the stamping terminal is detachably connected with the transition terminal, and when the stamping terminal breaks down, the stamping terminal can be in threaded connection and electrically connected with the transition terminal, and the transition terminal can be in threaded connection and electrically connected with the transition terminal. According to the utility model, only fault parts need to be detached independently, the problems of high cost and complex assembly process during maintenance of the terminal are solved, the sealing structure is integrally injection-molded on the transition section, the permeation of external water is reduced, and the waterproof performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric automobile technical field more particularly, relate to a cylindrical stamping terminal. BACKGROUND

[0002] With the resource reduction of gasoline fuel and the reason of environmental protection, more and more countries will new energy automobile as the development direction of future automobile, and the popularization degree of new energy automobile is higher and higher, and the charging system for supplementing energy for new energy battery also develops faster and faster. At present, in the charging system, the charging terminal and the cable are generally connected through the transition terminal, and the charging terminal and the transition terminal are connected by welding, which is not detachable. When a certain terminal fails, the charging terminal needs to be removed from the shell of the charging seat for maintenance or replacement. Since the transition terminal and the charging terminal are not detachable, the charging terminal and the transition terminal are more likely to be discarded and replaced as a whole during maintenance, so that the maintenance cost is high.

[0003] Therefore, there is an urgent need in the prior art for a new scheme to solve the above problems. UTILITY MODEL CONTENT

[0004] An object of the utility model is to provide a new technical scheme of a cylindrical stamping terminal to solve the problem of non-detachable connection between the charging terminal and the transition terminal. When a certain terminal fails, the charging terminal and the transition terminal need to be removed from the shell of the charging seat for maintenance or replacement, and the maintenance cost is high.

[0005] According to the utility model, a cylindrical stamping terminal is provided for connecting a mating terminal and a transition terminal, which comprises a plug-in part, a transition part and a fixed part connected in sequence, a sealing structure injection molded on at least part of the transition part and protruding, the plug-in part and the fixed part are curled into a cylindrical shape from a plate-shaped material, and the connection is fixedly connected, a threaded structure is provided on the fixed part for screwing and electrically connecting with the transition terminal.

[0006] Optionally, the threaded structure comprises an internal thread provided on the inner wall of the fixed part and a screw, a through hole is provided on the transition terminal, the screw passes through the through hole and is screwed with the internal thread to fix the transition terminal against the free end face of the fixed part.

[0007] Optionally, the threaded structure comprises a first external thread provided on the outer wall of the fixed part and at least one first nut, a through hole is provided on the transition terminal, the first external thread passes through the through hole, and the first nut is screwed with the first external thread to fix the transition terminal.

[0008] Optionally, the threaded structure comprises a fixing member and at least one second nut, the fixing member comprises a crimping portion and a screwing portion connected in sequence, the screwing portion is provided with a second external thread, the fixing portion is sleeved with the crimping portion and fixedly connected, the transition terminal is provided with a through hole, the second external thread passes through the through hole, and the second nut is screwed with the second external thread and fixes the transition terminal.

[0009] Optionally, a diameter of the fixing portion is smaller than a diameter of the inserting portion, and a plating layer is arranged at least on inner walls of the fixing portion, an outer wall of the crimping portion, an outer wall of the second external thread, and an inner wall of the through hole.

[0010] Optionally, the outer periphery of the sealing structure is provided with annular sealing grooves and mounting grooves arranged at intervals.

[0011] Optionally, the inserting portion has a mounting cavity, a drum spring is arranged in the mounting cavity, an inner wall of the drum spring abuts against an outer wall of the counter terminal, and clamping portions are arranged on the inner wall of the mounting cavity corresponding to positions of two ends of the drum spring, so as to limit the drum spring in the mounting cavity.

[0012] Optionally, the inserting portion is formed into a cylinder by stamping out dovetail grooves and dovetail buckles from edges of the plate-shaped material through a stamping process, and the dovetail grooves and the dovetail buckles are buckled and connected to each other after being curled.

[0013] The utility model discloses beneficial effects are:

[0014] Through the threaded structure on the fixing portion, the cylinder stamping terminal and the transition terminal are detachably connected, when the cylinder stamping terminal fails, or the transition terminal fails, or the cable connection at the transition terminal has a problem, only the faulty part needs to be separately disassembled, so that maintenance and replacement are simple, time and labor are saved, and the problems of high cost and complex assembly process of the terminal during maintenance are solved.

[0015] Other features and advantages of the utility model will become clear through the following detailed description of exemplary embodiments of the utility model with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings incorporated in the specification and constituting a part of the specification illustrate embodiments of the utility model and, together with the description, serve to explain the principle of the utility model.

[0017] Figure 1 It is the structural schematic view of first kind of embodiment of the utility model cylinder stamping terminal;

[0018] Figure 2 It is the structural schematic view of internal thread of the utility model cylinder stamping terminal;

[0019] Figure 3 Structure diagram of the second embodiment of the cylindrical stamping terminal of the utility model;

[0020] Figure 4 Structure diagram of the second embodiment of the cylindrical stamping terminal of the utility model;

[0021] Figure 5 Structure diagram of the third embodiment of the cylindrical stamping terminal of the utility model;

[0022] Figure 6 Structure diagram of the cylindrical stamping terminal and the counter terminal assembly of the utility model;

[0023] Figure 7 Structure diagram of the cylindrical stamping terminal and the counter terminal assembly of the utility model;

[0024] Figure 8 Structure diagram of the utility model card joint part will be limited in the installation cavity structure diagram of the drum spring;

[0025] Figure 9 Structure diagram of the dovetail groove and the dovetail buckle of the cylindrical stamping terminal of the utility model;

[0026] Figure 10 Structure diagram of the transition terminal of the utility model.

[0027] The figure is marked as follows:

[0028] 10, cylindrical stamping terminal; 11, plug-in part; 111, installation cavity; 112, card joint part; 113, dovetail buckle; 114, dovetail groove; 12, transition part; 13, fixed part; 131, internal thread; 132, first external thread; 20, sealing structure; 21, sealing groove; 22, installation groove; 30, transition terminal; 31, through hole; 40, screw; 50, fixing piece; 51, pressure connection part; 52, screw connection part; 521, second external thread; 60, second nut; 70, first nut; 80, counter terminal; 90, drum spring. DETAILED DESCRIPTION

[0029] Various exemplary embodiments of the utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangement, numerical expression and numerical value of the components and steps set forth in these embodiments do not limit the scope of the utility model.

[0030] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way limits the scope of the utility model and its applications or uses.

[0031] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art(s) can not be discussed in detail herein. However, where appropriate, the techniques, methods, and apparatus should be considered part of the present disclosure.

[0032] In all of the examples shown and discussed herein, any specific values should be interpreted as merely illustrative and not limiting. Thus, other examples of the example embodiments can have different values.

[0033] According to a first aspect of the present application, as shown in Figure 1 and Figure 10 , there is provided a cylindrical stamping terminal 10 for connecting a mating terminal 80 and a transition terminal 30, comprising a plug-in part 11, a transition part 12 and a fixed part 13 connected in sequence, and a sealing structure 20 injection molded on at least part of the transition part 12 and protrudingly arranged, the plug-in part 11 and the fixed part 13 are curled into a cylindrical shape from a plate-shaped material, and the connection is fixedly connected, a threaded structure is arranged on the fixed part 13, used for screwing and electrically connecting with the transition terminal 30.

[0034] With the decrease of gasoline fuel resources and environmental protection, more and more countries take new energy vehicles as the development direction of future vehicles, and the popularity of new energy vehicles is getting higher and higher. The charging system for supplementing energy for new energy batteries is also developing faster and faster. At present, in the charging system, the charging terminal and the cable are generally connected through a transition terminal 30, and the charging terminal and the transition terminal 30 are connected by welding, which is a non-detachable connection. When a certain terminal fails, the charging terminal needs to be removed from the shell of the charging base for maintenance or replacement. Since the transition terminal 30 and the charging terminal are non-detachable, the charging terminal and the transition terminal 30 are more likely to be discarded and replaced as a whole during maintenance, resulting in high maintenance cost.

[0035] Through the threaded structure on the fixed part 13, the cylindrical stamping terminal 10 and the transition terminal 30 are detachably connected. When the cylindrical stamping terminal 10 fails or the cable connection at the transition terminal 30 fails, only the faulty part needs to be detached, which is simple to maintain and replace, saves time and effort, and solves the problems of high cost and complex assembly process during maintenance of the terminal.

[0036] In some embodiments, as shown in Figure 1 , Figure 2 and Figure 10 , the threaded structure includes an internal thread 131 arranged on the inner wall of the fixed part 13 and a screw 40, a through hole 31 is arranged on the transition terminal 30, the screw 40 passes through the through hole 31 and is screwed with the internal thread 131 to fix the transition terminal 30 abutting against the free end face of the fixed part 13.

[0037] When installing, the through hole 31 of the transition terminal 30 is threaded onto the screw 40, and the screw 40 is screwed with the nut until the transition terminal 30 is clamped by the fixing part 13 and the screw cap of the screw 40, and abuts against the free end face of the fixing part 13. When the cylindrical stamping terminal 10 or the transition terminal 30 fails, only the failed component needs to be disassembled, which is simple to maintain and replace, saves time and effort, and solves the problems of high cost and complex assembly process of the terminal during maintenance.

[0038] In some embodiments, as shown in Figure 5 and Figure 10 , the threaded structure includes a first external thread 132 provided on the outer wall of the fixing part 13 and at least one first nut 70, the transition terminal 30 is provided with a through hole 31, the first external thread 132 passes through the through hole 31, and the first nut 70 is screwed with the first external thread 132 and fixes the transition terminal 30.

[0039] The through hole 31 of the transition terminal 30 is threaded onto the first external thread 132 on the fixing part 13, and the nut is screwed with the first external thread 132 and fixes the transition terminal 30 to the fixing part 13, which is simple in structure and convenient to install and disassemble. When the cylindrical stamping terminal 10 or the transition terminal 30 fails, only the failed component needs to be disassembled, which is simple to maintain and replace, saves time and effort, and solves the problems of high cost and complex assembly process of the terminal during maintenance.

[0040] In some embodiments, as shown in Figure 3 , Figure 4 and Figure 10 , the threaded structure includes a fixing part 50 and at least one second nut 60, the fixing part 50 includes a crimping part 51 and a screwing part 52 connected in sequence, the screwing part 52 is provided with a second external thread 521, the fixing part 13 is sleeved with the crimping part 51 and fixedly connected, the transition terminal 30 is provided with a through hole 31, the second external thread 521 passes through the through hole 31, and the second nut 60 is screwed with the second external thread 521 and fixes the transition terminal 30.

[0041] The fixing part 13 is sleeved with the crimping part 51 and fixedly connected, which can connect the fixing part 50 and the cylindrical stamping terminal 10 into an integral structure, facilitate the connection of the screwing part 52 and the transition terminal 30 in the subsequent sequence, and facilitate the disassembly and replacement of the damaged fixing part 50. In addition, the cylindrical stamping terminal 10 and the transition terminal 30 are detachably connected. When the cylindrical stamping terminal 10 fails or the transition terminal 30 is damaged, only the failed component needs to be disassembled, which is simple to maintain and replace, saves time and effort, and solves the problems of high cost and complex assembly process of the terminal during maintenance.

[0042] In some embodiments, as shown inFigure 1 and Figure 10 As shown in the figure, the diameter of the fixed part 13 is smaller than the diameter of the plug-in part 11, and a plating layer is arranged on the inner wall of the fixed part 13, the outer wall of the crimping part 51, the outer wall of the second external thread 521, and the inner wall of the through hole 31.

[0043] The diameter of the fixed part 13 is smaller than the diameter of the plug-in part 11, which can connect a small screw structure, and reduce the cost of the fixing part 50 and the second nut 60; the plating layer is arranged by electroplating, chemical plating, magnetron sputtering or vacuum plating, and the plating layer increases the wear resistance, corrosion resistance and conductivity of the inner wall of the fixed part 13, the outer wall of the crimping part 51, the outer wall of the second external thread 521, and the inner wall of the through hole 31.

[0044] In some embodiments, as shown in the figure, the outer periphery of the sealing structure 20 is provided with annular sealing grooves 21 and mounting grooves 22 arranged at intervals. Figure 4

[0045] The sealing groove 21 is used to place the sealing ring between the cylindrical stamping terminal and the mounting environment, and the mounting groove 22 is used to be clamped with the fixed position, so as to fix the cylindrical stamping terminal 10.

[0046] In some embodiments, as shown in the figure, the plug-in part 11 has a mounting cavity 111, a drum spring 90 is arranged in the mounting cavity 111, the inner wall of the drum spring 90 abuts against the outer wall of the counter terminal 80, and a clamping part 112 is arranged on the inner wall of the mounting cavity 111 corresponding to the positions at both ends of the drum spring 90, so as to limit the drum spring 90 in the mounting cavity 111. Figures 6-8

[0047] The drum spring 90 is arranged in the mounting cavity 111, which can make the mutually plugged terminals have greater plug-in force, can firmly clamp the counter terminal 80, ensure the stability of signal transmission, and also provide elastic contact, prevent the wear of the contact caused by the different centers of the terminals when the cylindrical stamping terminal 10 and the counter terminal 80 are rigidly plugged and contacted, and further cause problems such as resistance increase, working temperature increase, and power transmission power decrease.

[0048] In some embodiments, as shown in the figure, the plug-in part 11 is formed into a cylinder by stamping out dovetail grooves 114 and dovetail buckles 113 on the edge of the plate-shaped material through a stamping process. Figure 9

[0049] ​​​The dovetail groove 114 and the dovetail buckle 113 are connected by mutual buckling to form a cylindrical shape, so that the structure of the cylindrical shape is stable after the terminal is curled, and the cracking or deformation at the gap during repeated plugging and unplugging with the counter terminal 80 is avoided, which causes the terminal to be out of concentricity, causes serious wear at the contact, causes the resistance to rise, the working temperature to rise, the power transmission power to decrease, and other problems, and causes the cracking to be serious to cause the electrical connection function to be unable to meet the electrical connection function.

[0050] Although some specific embodiments of the present application have been described in detail by examples, those skilled in the art should understand that the above examples are only for illustration, not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A cylindrical press terminal for connecting a mating terminal and a transition terminal, characterized by, The sealing structure is injection molded on at least part of the transition part and protrudes outwardly. The fixing part is provided with a threaded structure for screwing and electrically connecting with the transition terminal.

2. A cylindrical stamping terminal according to claim 1, wherein The threaded structure includes an inner thread provided on the inner wall of the fixing part and a screw, the transition terminal is provided with a through hole, the screw passes through the through hole and is screwed with the inner thread to fix the transition terminal against the free end face of the fixing part.

3. A cylindrical stamping terminal according to claim 1, wherein The threaded structure includes a first outer thread provided on the outer wall of the fixing part and at least one first nut, the transition terminal is provided with a through hole, the first outer thread passes through the through hole, and the first nut is screwed with the first outer thread to fix the transition terminal.

4. A cylindrical stamping terminal according to claim 1, wherein The threaded structure includes a fixing member and at least one second nut, the fixing member includes a crimping part and a screwing part connected in sequence, the screwing part is provided with a second outer thread, the fixing part is sleeved with the crimping part and fixedly connected, the transition terminal is provided with a through hole, the second outer thread passes through the through hole, and the second nut is screwed with the second outer thread to fix the transition terminal.

5. A cylindrical stamping terminal according to claim 4, wherein The diameter of the fixing part is smaller than that of the plug-in part, and a plating layer is provided on at least the inner wall of the fixing part, the outer wall of the crimping part, the outer wall of the second outer thread, and the inner wall of the through hole.

6. A cylindrical stamping terminal according to claim 1, wherein The outer periphery of the sealing structure is provided with a ring-shaped sealing groove and a mounting groove arranged at intervals.

7. A cylindrical stamping terminal according to claim 1 wherein, The plug-in part has a mounting cavity, a drum spring is arranged in the mounting cavity, the inner wall of the drum spring abuts against the outer wall of the mating terminal, and clamping parts are arranged on the inner wall of the mounting cavity corresponding to the positions of both ends of the drum spring to limit the drum spring in the mounting cavity.

8. A cylindrical stamping terminal according to claim 1 wherein, The plug-in part is formed by stamping a dovetail groove and a dovetail buckle on the edge of the plate-shaped material, and the dovetail groove and the dovetail buckle are connected to each other after being curled to form a cylindrical shape.

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