A steel ball type contact connector assembly

Abstract

The present invention relates to a steel ball type contact connector assembly, comprising a female end body, an inner sleeve, a steel ball, an outer sleeve and a male end body, wherein one end of the female end body is provided with a tubular connection portion; one end of the inner sleeve body is fixed inside the tubular connection portion; the steel ball is arranged in a steel ball limiting hole; the outer sleeve is sleeved on one end of the inner sleeve body away from the tubular connection portion; the male end body comprises a connection end, and the male end body can be inserted into the inner sleeve, so that each steel ball is crimped on the annular connection groove in a two-point manner, forming a clamping limit of the connection end and the inner sleeve, and realizing the electrical connection between the male end body and the female end body. Compared with the prior art, the present invention adopts the steel ball sphere double-point contact technology, realizes 2*N points of multi-point uniform connection, stable contact, extremely low failure probability, extremely low wear during each plugging and unplugging, no burrs, significantly improved service life, can realize fully automated processing and assembly, high processing efficiency, and less waste generation.

Description

Technical Field

[0001] The invention relates to the field of connectors, and in particular to a steel ball type contact connector component. Background Art

[0002] High current connectors are widely used in the automotive and electrical fields. As important connection components in automobiles and electrical appliances, they play an important role in the power supply of automobiles and electrical appliances. Electrical connectors generally use the method of straight-line plug-in between the female end and the male end to achieve current transfer.

[0003] The female end of the existing high current connector adopts an elastic arm mechanism, that is, an axial elastic arm 6 is provided at the end of the female end body 1, see Figure 6 A gap is provided between the axial elastic arms 6. When the male end is inserted linearly, the axial elastic arms 6 are elastically pressed against the outer wall of the male end to achieve electrical connection between the male end and the female end.

[0004] However, the prior art has the following shortcomings: 1) In the prior contact structure, the elasticity of the axial elastic arm 6 is mainly relied on to complete the fastening connection during plugging, and the electrical transmission is achieved through the crimping of the axial elastic arm 6 and the male end. However, after long-term plugging and unplugging, the axial elastic arm 6 is prone to fatigue and the elastic mechanism is prone to surrender, and the stability is significantly reduced; 2) After multiple plugging and unplugging, burrs and scratches are easily generated at the crimping joint at the end of the axial elastic arm 6, which affects the current transmission and reduces the transmission stability and quality; 3) The elastic arm structure is not easy to process and shape, the processing cost is high, and a large amount of waste is generated; 4) The working requirements have high requirements on the accuracy of the activity, and the long-term axial pulling force and radial swing cannot be met under specific working conditions, and the root of the elastic arm is prone to yield. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and to provide a steel ball contact connector assembly, which adopts steel ball sphere double-point contact technology to achieve 2*N points of multi-point uniform connection, stable contact, extremely low failure probability, extremely low wear each time plugging and unplugging, no burrs, no fatigue failure limit, so that the service life of the female end body is significantly improved, and fully automated processing and assembly can be achieved, with high processing efficiency and less waste generation.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] The steel ball type contact connector assembly of the present invention comprises a female end body, an inner sleeve, a steel ball, an outer sleeve and a male end body, wherein specifically:

[0008] One end of the female end body is provided with a tubular connection portion;

[0009] The inner sleeve includes an inner sleeve body, an annular flange circumferentially arranged on the inner sleeve body, and a steel ball limiting hole opened on the inner sleeve body. One end of the inner sleeve body is fixed inside the tubular connecting part.

[0010] The steel ball is arranged in the steel ball limiting hole;

[0011] The outer sleeve is sleeved on one end of the inner sleeve body away from the tubular connecting portion;

[0012] The male end body includes a connecting end, and the connecting end is provided with a plurality of annular connecting grooves. The male end body can be inserted into the inner sleeve so that each steel ball is crimped on the annular connecting groove in a two-point manner, forming a clamping limit between the connecting end and the inner sleeve, and at the same time realizing the electrical connection between the male end body and the female end body.

[0013] Furthermore, the steel ball limiting holes are provided in a plurality of circles on the inner sleeve, and a plurality of steel ball limiting holes are provided in each circle, and the spacing between two adjacent circles of steel ball limiting holes corresponds to the setting spacing of the annular connecting grooves.

[0014] Furthermore, the tube opening of the outer sleeve close to one end of the tubular connecting portion is radially contracted inward to form a limiting contraction edge.

[0015] Furthermore, the annular flange is provided with two circles.

[0016] Furthermore, the limit convergence edge abuts against the outer wall of the inner sleeve body and is located between the two annular flanges, so that the male end body can drive the inner sleeve body to slide axially relative to the tubular connection portion, and the axial displacement is limited to the area between the two annular flanges.

[0017] Furthermore, the hole wall of the steel ball limiting hole is a concave arc surface configuration, so that the steel ball contacts the hole wall and is partially covered by the hole wall.

[0018] Furthermore, the diameter of the steel ball is greater than the depth of the steel ball limiting hole.

[0019] Furthermore, when the male end body is electrically connected to the female end body, one side of the steel ball is pressed against the annular connecting groove, and the other side is pressed against the inner wall of the outer sleeve or the inner wall of the connecting portion.

[0020] Furthermore, a limiting flange is provided on one side of the connecting end to limit the insertion position during direct insertion.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1) The present invention adopts the steel ball sphere double-point contact technology, in which the male end body can be inserted into the inner sleeve, so that each steel ball is crimped on the annular connection groove in a two-point manner, and multiple circles of steel balls are crimped and connected at the same time, realizing 2*N points of multi-point uniform connection, stable contact, and extremely low failure probability, avoiding the elastic arm design in the prior art, and is not limited by the disadvantages that the axial elastic arm is easy to fatigue and the elastic mechanism is easy to surrender.

[0023] 2) In the present invention, multiple steel balls are crimped and connected to the annular connecting groove in the axial direction at the same time. During direct plug-in connection, multiple circles of steel balls rotate synchronously. The wear amount is extremely low during each plugging and unplugging, no burrs are generated, and there is no fatigue failure limit, which significantly improves the service life of the female end body.

[0024] 3) In the present invention, the limiting retracted edge abuts against the outer wall of the inner sleeve body and is located between the two annular flanges, so that the male end body can drive the inner sleeve body to slide axially relative to the tubular connection part, and under specific electrical connection conditions, the axial pulling force can be buffered; at the same time, because multiple steel balls contact the inner wall of the tubular connection part by pressing, the oblique swinging force they are subjected to can be converted into a sliding force between the inner sleeve body and the tubular connection part, and the dissipation of the oblique swinging force is achieved through mutual sliding movement, thereby ensuring the stability of the electrical connection.

[0025] 4) During the processing, each component is processed separately and then assembled uniformly. The processing process is simple and can realize fully automated processing and assembly, with high processing efficiency and less waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic cross-sectional structure diagram of the steel ball type contact connector assembly in the present invention;

[0027] Figure 2 It is a structural schematic diagram of the inner sleeve in the present invention;

[0028] Figure 3 It is a schematic structural diagram of the female end body in the present invention;

[0029] Figure 4 Schematic diagram of double-point contact of the steel ball in the present invention;

[0030] Figure 5 It is a structural schematic diagram of the male end body in the present invention;

[0031] Figure 6 It is a structural schematic diagram of the female end body in the prior art.

[0032] In the figure: 1, female end body, 2, inner sleeve, 3, steel ball, 4, outer sleeve, 5, male end body, 6, axial elastic arm, 11, tubular connecting part, 21, inner sleeve body, 22, annular flange, 23, steel ball limiting hole, 41, limiting gathering edge, 51, connecting end, 52, annular connecting groove, 53, limiting flange. DETAILED DESCRIPTION

[0033] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Example

[0035] The steel ball type contact connector assembly of the present invention comprises a female end body 1, an inner sleeve 2, a steel ball 3, an outer sleeve 4 and a male end body 5, see Figure 1 .

[0036] One end of the female end body 1 is provided with a tubular connection portion 11, see Figure 3 A limiting flange 53 is provided on one side of the connecting end 51 to limit the insertion position during direct insertion.

[0037] The inner sleeve 2 includes an inner sleeve body 21, an annular flange 22 circumferentially arranged on the inner sleeve body 21, and a steel ball limiting hole 23 opened on the inner sleeve body 21. Figure 2 One end of the inner sleeve body 21 is fixed inside the tubular connecting portion 11. The outer sleeve 4 is sleeved on the end of the inner sleeve body 21 away from the tubular connecting portion 11, see Figure 1 .

[0038] The steel ball 3 is arranged in the steel ball limiting hole 23. The hole wall of the steel ball limiting hole 23 is a concave arc surface configuration, so that the steel ball 3 contacts the hole wall and is partially covered by the hole wall. Figure 4 In the specific implementation, the diameter of the steel ball 3 is greater than the hole depth of the steel ball limiting hole 23. The technical solution adopts the steel ball sphere double-point contact technology, in which the male end body 5 can be inserted into the inner sleeve 2, so that each steel ball 3 is crimped on the annular connection groove 52 in a two-point manner, and multiple circles of steel balls 3 are crimped at the same time, realizing a multi-point uniform connection of 2*N points, stable contact, and extremely low failure probability, avoiding the elastic arm design in the prior art, and not limited by the drawbacks that the axial elastic arm is easy to fatigue and the elastic mechanism is easy to surrender. Multiple steel balls 3 are crimped and connected to the annular connection groove 52 in the axial direction at the same time. When the direct plug connection is made, the multiple circles of steel balls 3 rotate synchronously, and the wear amount is extremely low each time the plug is plugged in and out, no burrs are generated, and there is no fatigue failure limit, which significantly improves the service life of the female end body 1.

[0039] The male end body 5 includes a connecting end 51, see Figure 5The connecting end 51 is provided with a plurality of annular connecting grooves 52, and the male end body 5 can be inserted into the inner sleeve 2, so that each steel ball 3 is crimped on the annular connecting groove 52 in a two-point manner, forming a clamping limit between the connecting end 51 and the inner sleeve 2, and realizing the electrical connection between the male end body 5 and the female end body 1. When the male end body 5 is electrically connected to the female end body 1, one side of the steel ball 3 is crimped on the annular connecting groove 52, and the other side is pressed against the inner wall of the outer sleeve 4 or the inner wall of the connecting portion 11.

[0040] The inner sleeve 2 is provided with a plurality of circles of steel ball limiting holes 23 , each circle is provided with a plurality of steel ball limiting holes 23 , and the spacing between two adjacent circles of steel ball limiting holes 23 corresponds to the setting spacing of the annular connecting grooves 52 .

[0041] In specific implementation, the annular flange 22 is provided with two circles, and the tube opening of the outer sleeve 4 close to one end of the tubular connection part 11 is radially contracted to form a limited gathering edge 41. The limited gathering edge 41 abuts against the outer wall of the inner sleeve body 21 and is located between the two circles of annular flanges 22, so that the male end body 5 can drive the inner sleeve body 21 to slide axially relative to the tubular connection part 11. The axial displacement is limited to the area between the two circles of annular flanges 22. In the present invention, the limited gathering edge 41 abuts against the outer wall of the inner sleeve body 21 and is located between the two circles of annular flanges 22, so that the male end body 5 can drive the inner sleeve body 21 to slide axially relative to the tubular connection part 11, and in specific electrical connection conditions, the axial pulling force can be buffered. At the same time, because the multiple steel balls 3 are in contact with the inner wall of the tubular connecting part 11 by pressing, the oblique swinging force they are subjected to can be converted into a sliding force between the inner sleeve body 21 and the tubular connecting part 11. The oblique swinging force is dissipated through mutual sliding motion, thereby ensuring the stability of the electrical connection.

[0042] In the specific processing process, each component is processed separately and then assembled uniformly. The processing process is simple and can realize fully automated processing and assembly, with high processing efficiency and less waste generation.

[0043] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A steel ball contact connector assembly, characterized in that: include: A female end body (1), one end of which is provided with a tubular connecting portion (11); The inner sleeve (2) comprises an inner sleeve body (21), an annular flange (22) circumferentially arranged on the inner sleeve body (21), and a steel ball limiting hole (23) provided on the inner sleeve body (21); one end of the inner sleeve body (21) is fixed inside the tubular connecting portion (11); A steel ball (3) is arranged in a steel ball limiting hole (23); An outer sleeve (4) is sleeved on an end of the inner sleeve body (21) away from the tubular connecting portion (11); The male end body (5) comprises a connecting end (51), wherein the connecting end (51) is provided with a plurality of annular connecting grooves (52), and the male end body (5) can be inserted into the inner sleeve (2), so that each steel ball (3) is crimped onto the annular connecting groove (52) in a two-point manner, thereby forming a clamping limit for the connecting end (51) and the inner sleeve (2), and at the same time realizing an electrical connection between the male end body (5) and the female end body (1); The tube opening of the outer sleeve (4) close to one end of the tube-shaped connecting portion (11) is radially contracted inward to form a limiting and contracting edge (41); The annular flange (22) is provided with two circles; The limiting and gathering edge (41) abuts against the outer wall of the inner sleeve body (21) and is located between the two annular flanges (22), so that the male end body (5) can drive the inner sleeve body (21) to perform axial sliding displacement relative to the tubular connecting portion (11); The steel ball limiting holes (23) are provided in a plurality of circles on the inner sleeve (2), each circle being provided with a plurality of steel ball limiting holes (23), and the spacing between two adjacent circles of steel ball limiting holes (23) corresponds to the spacing of the annular connecting grooves (52).

2. A steel ball type contact connector assembly according to claim 1, characterized in that: The hole wall of the steel ball limiting hole (23) is of a concave arc surface configuration, so that the steel ball (3) contacts the hole wall and is partially covered by the hole wall.

3. A steel ball type contact connector assembly according to claim 2, characterized in that: The diameter of the steel ball (3) is greater than the depth of the steel ball limiting hole (23).

4. A steel ball type contact connector assembly according to claim 3, characterized in that: When the male end body (5) is electrically connected to the female end body (1), one side of the steel ball (3) is pressed against the annular connection groove (52), and the other side is pressed against the inner wall of the outer sleeve (4) or the inner wall of the connection part (11).

5. The steel ball type contact connector assembly according to claim 1, characterized in that: A limiting flange (53) is provided on one side of the connecting end (51).

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