Current-carrying connector without damage to connecting terminal

Abstract

The utility model discloses a current-carrying connector without a connection terminal. The current-carrying connector comprises an outer shell assembly, an inner shell assembly and two groups of terminal assemblies. The shell assembly has a mounting cavity; the inner shell assembly is arranged in the mounting cavity, and the inner shell assembly is provided with two separated channels; the two groups of terminal assemblies are installed in the two channels in a one-to-one manner, and the socket end of each terminal assembly is provided with a clamping opening structure which is clamped when the socket end is subjected to external force and is self-reset when the socket end is not subjected to external force. According to the current-carrying connector, the clamping opening structure is adopted, the clamping opening structure is movable, the clamping opening is stably connected with the test terminal and can protect the test terminal, the service life of the test terminal is prolonged, and current transmission is stable. The clamping opening structure of the terminal assembly can be self-reset, and the structure is ingenious.

Description

Technical Field

[0001] The utility model relates to a terminal connector, and more particularly to a current-carrying connector for connecting terminals without damage. Background Art

[0002] In the prior art, the connection structures of terminal connectors include a structure of interference fit after male and female ends are inserted into each other, a structure of fixing with screws after male and female ends are inserted into each other, and a structure of using an elastic buckle after male and female ends are inserted into each other. The above three structures are relatively common connection structures of terminal connectors.

[0003] In the prior art, there is a terminal connector. The clamping mouth of the traditional terminal connector does not have elasticity. When the male terminal is inserted, it will damage the male terminal of the test piece, and the current transmission is unstable.

[0004] Moreover, the specifications of the male terminals of the test pieces are different, and different current-carrying connectors need to be configured to test the test pieces, resulting in an increase in cost.

[0005] In order to meet various different industrial tests and increase the protection of test pieces, it is necessary to develop a current-carrying connector for connecting terminals without damage to solve the above technical problems. Summary of the Utility Model

[0006] Aiming at the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a current-carrying connector for connecting terminals without damage. The purpose of designing this current-carrying connector is to improve the service life of test terminals and ensure stable current transmission.

[0007] To solve the above technical problems, the utility model is realized through the following solutions: A current-carrying connector for connecting terminals without damage of the utility model includes:

[0008] A housing assembly having an installation cavity;

[0009] An inner housing assembly installed in the installation cavity, and the inner housing assembly has two separated channels;

[0010] Two groups of terminal assemblies, and the two groups of terminal assemblies are installed in the two channels one by one. The insertion and reception end of the terminal assembly has a clamping mouth structure that clamps when subjected to an external force and self-resets when not subjected to an external force.

[0011] Further, the first end of the housing assembly is open to form a male terminal inlet end, and its second end is covered and two side holes are reserved.

[0012] Furthermore, the current-carrying connector further includes a grounding terminal, and the grounding terminal is fixed inside the second end of the housing assembly.

[0013] Further, the installation cavity is provided with a first limiting cavity, and the inner shell assembly is defined within the first limiting cavity.

[0014] Further, the channel is provided with a second limiting cavity.

[0015] Further, the terminal assembly includes a terminal fixing member and a probe assembly connected to the terminal fixing member, and one of the nodes of the probe assembly is defined within the second limiting cavity.

[0016] Further, the probe assembly includes a plug block, a spring clip, a spring, an inner needle rod, a nut rod, a middle sleeve, a plug column, and an intermediate terminal;

[0017] The intermediate terminal is of a cylindrical structure and has a through cavity penetrating both ends;

[0018] The middle sleeve has a cylindrical section and a fork-shaped structure section. The outside of the connection between the cylindrical section and the fork-shaped structure section is provided with a convex portion, and the convex portion is limited within the second limiting cavity. A through hole is provided between the bottom surface of the fork of the fork-shaped structure section and the end of the cylindrical section, and a circumferential retaining ring is provided in the through hole;

[0019] The inner needle rod has an outer step, the spring is sleeved on the inner needle rod and is limited by the outer step. The outer threaded end of the inner needle rod enters from the orifice of the fork-shaped structure section, and the other end is provided with an internal thread;

[0020] The nut rod enters from the port of the cylindrical section and is connected to the outer threaded end of the inner needle rod. The plug column is press-fitted into the port of the cylindrical section. One end of the spring abuts against the circumferential retaining ring, and the other end abuts against the outer step;

[0021] The spring clip is clamped within the clip of the fork-shaped structure section and is fixed by screwing the plug block onto the internal threaded end of the inner needle rod.

[0022] Further, the spring clip is a U-shaped structural sheet, and both sides thereof are bent to form an inner concave structure. After the two sides of the spring clip are bent, the outer ends form an open structure.

[0023] Further, both sides of the spring clip are divided into a plurality of elastic sheet units along the length direction.

[0024] Further, the current-carrying connector further includes a push-button locking mechanism, and the push-button locking mechanism is provided on the outer shell assembly.

[0025] Compared with the prior art, the beneficial effects of the present utility model are:

[0026] 1. The current-carrying connector of the present utility model adopts a clamping structure, and this clamping structure is movable. The clamping mouth is stably connected to the test terminal and can protect the test terminal, improving the service life of the test terminal and ensuring stable current transmission.

[0027] 2. The clamping structure of the terminal assembly of the present utility model can self-reset, with a clever structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is an exploded view of the current-carrying connector of the present utility model.

[0029] Figure 2 is a cross-sectional view during the test of the present utility model.

[0030] Figure 3 is an exploded view of the terminal assembly of the present utility model.

[0031] Figure 4 is Figure 3 an enlarged view of the upper region of

[0032] Figure 5 is a structural diagram of the inner needle rod of the present utility model.

[0033] Figure 6 is a structural diagram of the terminal assembly with four elastic piece units of the present utility model.

[0034] Figure 7 is a structural diagram of the terminal assembly with six elastic piece units of the present utility model.

[0035] Figure 8 is an assembly diagram of the current-carrying connector of the present utility model.

[0036] Figure 9 is a structural diagram of the insertion end of the test piece of the present utility model.

[0037] Reference numerals in the drawings: lifting spring 1, terminal fixing part 2, probe assembly 3, first inner shell 4, second inner shell 5, first outer shell 6, second outer shell 7, pressing handle 8, tail cover 9, grounding terminal 10, rotating shaft 14, test piece 15, plug block 31, spring clip 32, spring 33, inner needle rod 34, nut rod 35, middle sleeve 36, plug column 37, intermediate terminal 38, test terminal 151, clamping block 152, protruding part 361, fork-shaped structure section 362, through hole 363, cylindrical section 364. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model, so that the advantages and features of the utility model can be more easily understood by those skilled in the art, thereby making a clearer and more explicit definition of the protection scope of the utility model. Obviously, the embodiments described in the utility model are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0039] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0040] Embodiment 1: The specific structure of the utility model is as follows:

[0041] Please refer to the attached Figures 1-9 The utility model discloses a current-carrying connector for lossless connection terminals, comprising an outer shell component, an inner shell component and two groups of terminal components.

[0042] The shell assembly has a mounting cavity; the first end of the shell assembly is open to form the male terminal inlet, and the second end is sealed and reserved with two side holes. The shell assembly includes a first shell 6 and a second shell 7. The first shell 6 and the second shell 7 are both rounded square shells, and their ends are fixed by long screws after docking. The shell surface of the second shell 7 is provided with a mounting groove, and a push-type locking mechanism is installed on the mounting groove. Specifically, the mounting groove is provided with an axial hole and a blind groove, and the push-type locking mechanism includes a lifting spring 1, a pressing handle 8, and a rotating shaft 14. The rotating shaft 14 is installed in the axial hole, the lifting spring 1 is placed in the blind groove, and the pressing handle 8 is rotatably installed on the rotating shaft 14, one end of which is supported by the lifting spring 1, and the other end is a hook. The first shell 6 is provided with a notch communicating with the mounting groove, and the hook extends from the notch and can extend into the notch.

[0043] The inner shell component is installed in the installation cavity, and the inner shell component has two separated passages; the installation cavity is provided with a first limit chamber, and the inner shell component is limited to the first limit chamber. The passage is provided with a second limit chamber. Specifically, Figure 1As shown, the inner shell assembly includes a first inner shell 4 and a second inner shell 5. The first inner shell 4 is longer than the second inner shell 5. The joint surface of the second inner shell 5 and the first inner shell 4 has a boss. Correspondingly, the first inner shell 4 is provided with a concave surface corresponding to the boss. The edge of the joint end of the second inner shell 5 and the first inner shell 4 is provided with a first convex rib. The second inner shell 5 is placed at the orifice of the second outer shell 7. The edge of the joint end of the first inner shell 4 and the second inner shell 5 is provided with a second convex rib. The first inner shell 4 is inserted into the first outer shell 6. A gap for the test piece 15 to enter is left between the first inner shell 4 and the first outer shell 6.

[0044] One side of the test piece 15 has two guiding rib strips and a clamping block 152 between the two guiding rib strips. After the test piece 15 is inserted into the gap, the hook part and the clamping block 152 form an interlocking structure.

[0045] Embodiment 2:

[0046] The following is the detailed structure of the terminal assembly:

[0047] The two groups of terminal assemblies are installed in two channels one by one. The socket and plug end of the terminal assembly has a clamping structure that clamps when under external force and self-resets when not under external force. The terminal assembly includes a terminal fixing member 2 and a probe assembly 3 connected to the terminal fixing member 2. One node of the probe assembly 3 is defined in the second limiting chamber.

[0048] The probe assembly 3 includes a plug block 31, a spring clip 32, a spring 33, an inner needle rod 34, a nut rod 35, a middle sleeve 36, a plug column 37, and an intermediate terminal 38;

[0049] The intermediate terminal 8 is a cylindrical structure with a through cavity penetrating both ends;

[0050] The middle sleeve 36 has a cylindrical section 364 and a fork structure section 362. The outer side of the connection between the cylindrical section 364 and the fork structure section 362 is provided with a raised portion 361. The raised portion 361 is limited in the second limiting chamber. A through hole 363 is provided between the bottom surface of the fork of the fork structure section 362 and the end of the cylindrical section. A circumferential retaining ring is provided in the through hole 363;

[0051] The inner needle rod 34 has an outer step. The spring 33 is sleeved on the inner needle rod 34 and is limited by the outer step. The outer threaded end of the inner needle rod 34 enters from the orifice of the fork structure section, and the other end is provided with an internal thread;

[0052] The nut rod 35 enters from the port of the cylindrical section and is connected to the external threaded end of the inner needle rod 34. The plug 37 is inserted into the port of the cylindrical section with interference fit. One end of the spring 33 abuts against the annular retaining ring, and the other end abuts against the outer step.

[0053] The spring clip 32 is clamped in the clip of the fork structure section and is screwed to the internal thread end of the inner needle rod 34 through the plug 31. The spring clip 32 is a U-shaped structural piece, both sides of which are bent to form an inner concave structure. After the two sides of the spring clip 32 are bent, the outer end forms an open structure.

[0054] like Figure 2 As shown, Figure 2 The cross-sectional view of the utility model during testing. The test piece 15 is inserted into the current-carrying connector of the utility model, and the test terminal 151 of the test piece 15 enters the spring clip 32. Due to the action of the spring 33, the test terminal 151 will press against the plug 31 after entering the spring clip 32, and the spring 33 will be compressed. The plug 31, the spring clip 32, the inner needle rod 34 and the nut rod 35 will move synchronously, effectively protecting the test terminal 151 and avoiding the test terminal 151 from rigid collision with the plug 31.

[0055] After the test terminal 151 enters the spring clip 32, the spring clip 32 is stretched open, and due to the bending characteristics of the spring clip 32, the test terminal 151 can be clamped, so that the test terminal 151 and the spring clip 32 are in stable electrical contact. The inner needle rod 34 limits the spring clip 32 to avoid excessive travel.

[0056] When the test terminal 151 is withdrawn from the spring clip 32 , the plug 31 , the spring clip 32 , the inner needle rod 34 and the nut rod 35 are reset due to the elastic force of the spring 33 .

[0057] The plug block 31 of the utility model is made of engineering materials, which will not cause damage to the test terminal 151 during the test process, thereby increasing the service life of the test terminal 151.

[0058] The terminal fixing member 2 is fixed to the outside of the intermediate terminal 38 by means of screws.

[0059] Embodiment 3:

[0060] The terminal assembly 3 of the present invention has two structures, one is a locking screw structure formed by adding screws and wiring terminals, and the other is a welding structure with added connecting terminals. The two structures meet different testing requirements.

[0061] Embodiment 4:

[0062] The current-carrying connector further comprises a grounding terminal 10 , which is fixed inside the second end of the housing assembly.

[0063] Example 5:

[0064] Both sides of the spring clip 32 are divided into a number of elastic piece units along the length direction. As Figures 6-7 shown, Figure 6 This is the structural diagram of the terminal assembly with four elastic piece units of the present utility model. Figure 7 This is the structural diagram of the terminal assembly with six elastic piece units of the present utility model.

[0065] Specifically, the width of the spring clip 32 of the present utility model is provided with 3.2 mm, 6.3 mm, and 9.8 mm. It is selected according to the test terminals 151 of different sizes, or one or more groups of terminal assemblies 3 can be used simultaneously. The present utility model can be changed to side-out or straight-out for the outer shell, and the lock-screw version or welding version can also be selected for the terminal assembly 3 according to different assembly environments, but the performance of the terminal assembly 3 is ensured to be unchanged, so that terminal tests with various different structures can be realized to meet the requirements of different working conditions.

[0066] In summary, the current-carrying connector of the present utility model adopts a clamping structure and the clamping structure is movable. The clamping mouth is stably connected to the test terminal and can protect the test terminal, improving the service life of the test terminal and ensuring stable current transmission. The clamping structure of the terminal assembly of the present utility model can self-reset, and the structure is ingenious.

[0067] The above is only the preferred embodiment of the present utility model, and it does not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A current-carrying connector with lossless connection terminals, characterized in that: include: a housing assembly having a mounting cavity; An inner shell component is installed in the installation cavity, and the inner shell component has two separated passages; Two groups of terminal assemblies are installed one by one in two channels, and the socket ends of the terminal assemblies have a clamping structure that is clamped when subjected to external force and self-resets when not subjected to external force.

2. A current-carrying connector with lossless connection terminals according to claim 1, characterized in that: The first end opening of the housing component forms a male terminal inlet, and the second end thereof is sealed and reserved with two side holes.

3. A current-carrying connector with lossless connection terminals according to claim 2, characterized in that: The current-carrying connector also includes a grounding terminal (10), which is fixed inside the second end of the housing component.

4. A current-carrying connector with lossless connection terminals according to claim 2, characterized in that: The installation cavity is provided with a first limiting chamber, and the inner shell component is limited in the first limiting chamber.

5. A current-carrying connector with lossless connection terminals according to claim 1 or 4, characterized in that: The channel is provided with a second limiting chamber.

6. A current-carrying connector with lossless connection terminals according to claim 5, characterized in that: The terminal assembly comprises a terminal fixing part (2) and a probe assembly (3) connected to the terminal fixing part (2), wherein one node of the probe assembly (3) is confined to the second limiting chamber.

7. A current-carrying connector with lossless connection terminals according to claim 6, characterized in that: The probe assembly (3) comprises a plug block (31), a spring clip (32), a spring (33), an inner needle rod (34), a nut rod (35), a middle sleeve (36), a plug column (37) and an intermediate terminal (38); The intermediate terminal (38) is a cylindrical structure having a through cavity passing through both ends; The middle sleeve (36) comprises a cylindrical section and a fork structure section, a protrusion (361) is provided on the outer side of the connection between the cylindrical section and the fork structure section, the protrusion (361) is limited in the second limiting chamber, a through hole is provided between the fork bottom surface of the fork structure section and the end of the cylindrical section, and an annular retaining ring is provided in the through hole; The inner needle rod (34) has an outer step, the spring (33) is sleeved on the inner needle rod (34) and limited by the outer step, the outer thread end of the inner needle rod (34) enters from the hole of the fork structure section, and the other end is provided with an inner thread; The nut rod (35) enters from the port of the cylindrical section and is connected to the external threaded end of the inner needle rod (34); the plug (37) is inserted into the port of the cylindrical section with interference fit; one end of the spring (33) abuts against the annular retaining ring, and the other end abuts against the outer step; The spring clip (32) is clamped in the clamping opening of the fork structure section and is screwed to the internal thread end of the inner needle rod (34) through a plug block (31) for fixation.

8. A current-carrying connector with lossless connection terminals according to claim 7, characterized in that: The spring clip (32) is a U-shaped structural piece, both sides of which are bent to form an inner concave structure. After the two sides of the spring clip (32) are bent, the outer end forms an open structure.

9. A current-carrying connector with lossless connection terminals according to claim 8, characterized in that: Both sides of the spring clip (32) are divided into a plurality of spring sheet units along the length direction.

10. A current-carrying connector with lossless connection terminals according to claim 1, characterized in that: It also includes a push-type locking mechanism, which is arranged on the housing component.

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