Jack electric contact assembly and electric connector

Abstract

The utility model discloses a jack electric contact assembly and an electric connector, and relates to the technical field of electric connectors, the jack electric contact assembly comprises a sleeve, two connecting pieces and an elastic contact piece, the sleeve is provided with a through cavity; the two connecting pieces are connected to the two ends of the sleeve; a through cavity is formed in the sleeve, an elastic contact piece is arranged in the through cavity, the elastic contact piece is provided with a plugging cavity for a pin terminal to be plugged in, the elastic contact piece comprises a plurality of elastic grid bars, the two ends of each elastic grid bar are connected to the two connecting pieces respectively, the plurality of elastic grid bars are arranged at intervals in the circumferential direction of the sleeve to form the plugging cavity, and the elastic grid bars are arranged in the plugging cavity. The section, perpendicular to the axial direction of the inserting cavity, of each elastic grid bar is arranged in a semicircular mode. According to the technical scheme provided by the utility model, the current-carrying capability of the elastic grid bar is improved, and the stability of the elastic grid bar when bearing large current is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric connector, especially a jack electric contact subassembly and electric connector. BACKGROUND

[0002] With the rapid development of new energy vehicles, the power distribution power requirement of automobile power system is more and more large, and it is necessary to continuously improve the overcurrent capacity in the process of line electric transmission in the safe voltage use range.

[0003] At present, the electric connector usually adopts the technical scheme of torsional spring grid plus sleeve, however, the torsional spring grid is usually arranged flatly, which limits the current carrying capacity of the torsional spring grid, and is not conducive to the long-term bearing of large current. UTILITY MODEL CONTENT

[0004] The utility model discloses a jack electric contact subassembly and electric connector, which aims to improve the current carrying capacity of the elastic grid bars and ensure the stability of the elastic grid bars when bearing large current.

[0005] To achieve the above-mentioned purpose, the utility model provides a jack electric contact subassembly, which comprises:

[0006] A sleeve is provided with a through cavity.

[0007] Two connecting pieces are connected to the two ends of the sleeve.

[0008] An elastic contact piece is arranged in the through cavity, and the elastic contact piece is provided with a plug-in cavity for inserting a plug-in terminal.

[0009] In an embodiment, the radius of the elastic grid bar along the cross section perpendicular to the axial direction of the plug-in cavity is defined as t, and the distance between the two adjacent elastic grid bars is not greater than 0.5t.

[0010] In an embodiment, each connecting piece comprises a ring portion and at least two crimping portions.

[0011] In an embodiment, the jack electric contact subassembly further comprises a fixing ring, the fixing ring is sleeved on the outer periphery of the sleeve, and at least part of the crimping portion is limited between the sleeve and the fixing ring.

[0012] In an embodiment, the outer wall of the sleeve is provided with a limiting groove corresponding to each of the pressing portions, and the pressing portion is limited in the limiting groove.

[0013] In an embodiment, the elastic bars are arranged in a curved manner along the axial direction of the sleeve.

[0014] In an embodiment, the elastic bars at least include a first segment and a second segment arranged at an angle, and the first segment and the second segment are connected by a connecting segment.

[0015] In the projection along the circumferential surface of the sleeve, the first segment and the second segment are arranged in a straight line, and the connecting segment is arranged in a curved manner.

[0016] In an embodiment, the first segment and the second segment are arranged in a protruding manner towards the inner side of the through cavity.

[0017] In an embodiment, the sleeve is formed by stamping.

[0018] And / or, the connecting member and the elastic bars are integrally formed.

[0019] In an embodiment, the electrical connector includes a pin terminal and the jack electrical contact assembly as described above, the pin terminal is inserted into the plug-in cavity and abuts against the elastic bars.

[0020] The technical scheme of the utility model discloses a jack electrical contact assembly including a sleeve, two connecting members and an elastic contact piece, the sleeve is used for fixedly connecting the connecting member and the elastic contact piece, the sleeve is provided with a through cavity penetrating through both ends, the through cavity is used for accommodating the elastic contact piece, the elastic contact piece includes a plurality of elastic bars, both ends of the elastic bar are connected to the two connecting members arranged at both ends of the sleeve respectively and extend along the axial direction of the sleeve, and the plurality of elastic bars are arranged at intervals along the circumferential direction of the sleeve to form a plug-in cavity. The elastic bar itself has elasticity, and after the pin terminal is inserted into the plug-in cavity, the pin terminal can elastically abut against the elastic bar, thereby improving the tightness of the abutment between the pin terminal and the elastic bar. Meanwhile, the cross section of each elastic bar is arranged in a semicircular shape, thereby improving the current carrying capacity of each elastic bar, so that the elastic contact piece can continuously and stably transmit large current to the pin terminal. Meanwhile, it is also beneficial to further tightly fit the elastic bar and the pin terminal inserted into the plug-in cavity, thereby ensuring the stability of the electrical transmission between the jack electrical contact assembly and the pin terminal. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings described below are only some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.

[0022] Figure 1 The structure diagram of the jack electrical contact assembly in an embodiment provided by the present application is shown in the figure.

[0023] Figure 2 The cross-sectional structure diagram of the jack electrical contact assembly in an embodiment provided by the present application is shown in the figure.

[0024] Figure 3 The exploded structure diagram of the jack electrical contact assembly in an embodiment provided by the present application is shown in the figure.

[0025] Figure 4 The exploded structure diagram of the jack electrical contact assembly in another embodiment provided by the present application is shown in the figure.

[0026] Explanation of the reference numerals:

[0027] 100, jack electrical contact assembly; 1, sleeve; 11, through cavity; 2, connecting piece; 21, ring part; 22, crimping part; 3, elastic grid; 31, first section; 32, second section; 33, connecting section; 4, plug-in cavity;

[0028] The realization, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0030] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0031] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the same or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes include "A and / or B", including A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the utility model.

[0032] Please refer to Figures 1 to 4 The utility model provides a jack electric contact subassembly 100, jack electric contact subassembly 100 includes sleeve 1, two connecting pieces 2 and elastic contact piece, sleeve 1 is equipped with through cavity 11, two connecting pieces 2 are connected in the both ends of sleeve 1, elastic contact piece is located in through cavity 11, elastic contact piece is equipped with the cavity 4 for the insertion of plug pin terminal, and elastic contact piece includes a plurality of elastic grid bars 3, and the both ends of each elastic grid bar 3 are connected to two connecting pieces 2 respectively, a plurality of elastic grid bars 3 are arranged along the circumference of sleeve 1 and form the cavity 4, and the cross section of each elastic grid bar 3 is perpendicular to the axial direction of cavity 4 and is arranged in semicircle shape.

[0033] In the embodiment, sleeve 1 is used for fixedly connecting connecting piece 2 and elastic contact piece, sleeve 1 is provided with through cavity 11 penetrating through both ends, through cavity 11 is used for accommodating elastic contact piece, elastic contact piece includes a plurality of elastic grid bars 3, both ends of elastic grid bar 3 are connected to two connecting pieces 2 arranged at both ends of sleeve 1 respectively, and extend along the axial direction of sleeve 1, a plurality of elastic grid bars 3 are arranged along the circumference of sleeve 1 to form cavity 4. Elastic grid bar 3 is arranged close to the cavity wall of through cavity 11, when plug pin terminal is inserted into through cavity 11, plug pin terminal will extend into the cavity 4 formed by elastic contact piece, and abut against elastic grid bar 3 to transmit current. Elastic grid bar 3 has elasticity, after plug pin terminal is inserted into cavity 4, plug pin terminal can abut against elastic grid bar 3 elastically, which improves the tightness of abutment between plug pin terminal and elastic grid bar 3. At the same time, the cross section of each elastic grid bar 3 is arranged in semicircle shape, which improves the current carrying capacity of each elastic grid bar 3, so that elastic contact piece can continuously and stably transmit large current to plug pin terminal. At the same time, it is also beneficial to further tightly fit elastic grid bar 3 and plug pin terminal inserted into cavity 4, and ensure the stability of electric transmission between jack electric contact subassembly 100 and plug pin terminal.

[0034] It can be understood that when the pin terminal is inserted into the insertion cavity 4, the elastic bars 3 will be pressed outward, at this time the sleeve 1 will provide an opposite force to the elastic bars 3, so that the elastic bars 3 and the pin terminal always maintain abutment, and at the same time, the deformation of the elastic bars 3 can be limited within a reasonable range, so as to avoid excessive deformation of the elastic bars 3 due to excessive force when the pin terminal is inserted into the insertion cavity 4, and to affect the service life of the jack electrical contact assembly 100.

[0035] In actual implementation, the plurality of elastic bars 3 are uniformly arranged along the circumference of the sleeve 1, so as to avoid that the contact area with the pin terminal at a certain position is too small, which causes overheating of the jack electrical contact assembly 100 and the pin terminal when transmitting current, and affects the safety and stability of the jack electrical contact assembly 100 in use. Alternatively, the through cavity 11 and the insertion cavity 4 are coaxially arranged, so that the pin terminal is uniformly stressed after being inserted into the insertion cavity 4, which is beneficial to the stability of electrical transmission. The elastic bars 3 can be made of alloy copper or other materials with elasticity and electrical conductivity. Alternatively, the circular arc edge of the cross section of the elastic bars 3 is arranged towards the inner side of the insertion cavity 4.

[0036] In an embodiment of the present application, as shown in Figure 2 the radius of the elastic bars 3 along the cross section perpendicular to the axis of the insertion cavity 4 is defined as t, and the distance between the adjacent two elastic bars 3 is not greater than 0.5t.

[0037] In the embodiment, the plurality of elastic bars 3 are densely arranged along the circumference of the through cavity 11, and the distance between the adjacent two elastic bars 3 is not greater than 0.5t, so that the number of the elastic bars 3 can be increased, the current carrying capacity of the elastic contact can be improved, and the stability of the elastic contact and the insertion terminal when transmitting current can be further improved.

[0038] In an embodiment of the present application, as shown in Figures 1 to 4 each connecting piece 2 comprises a ring portion 21 and at least two crimping portions 22, the ring portion 21 is arranged in the through cavity 11, the elastic bars 3 and the crimping portions 22 are connected to the two ends of the ring portion 21, and at least part of the crimping portions 22 are crimped to the outer wall surface of the sleeve 1.

[0039] In the embodiment, the ring portion 21 is formed in a ring shape along the circumference of the through cavity 11, the two ends of the elastic bars 3 are connected to the two ring portions 21 respectively, the ring portion 21 is arranged close to the cavity opening of the through cavity 11, one end of the crimping portion 22 is connected to the end of the ring portion 21 away from the elastic bars 3, the other end of the crimping portion 22 extends out of the through cavity 11 through the cavity opening of the through cavity 11, and is bent and crimped to the outer wall surface of the sleeve 1.

[0040] Understandably, the crimping portions 22 on the two ring portions 21 extend from the two openings of the cavity 11 and are respectively crimped to the outer wall surfaces at both ends of the sleeve 1. This can stably fix the elastic contact in the cavity and prevent the elastic contact from moving during the insertion of the pin terminal.

[0041] Each ring portion 21 includes at least two crimping portions 22 to ensure the stability of the connection between the connector 2 and the sleeve 1. The number of crimping portions 22 can be two, three, four, five, or other quantities, and is not specifically limited here. Multiple crimping portions 22 are also evenly spaced along the circumference of the ring portion 21, ensuring uniform stress on the ring portion 21 and contributing to structural stability.

[0042] In actual implementation, the crimping part 22 can be made of elastic material to tightly abut against the outer wall surface of the sleeve 1, thereby improving the reliability of the connection between the connector 2 and the sleeve 1.

[0043] In one embodiment of this utility model, such as Figure 1 As shown, the socket electrical contact assembly 100 also includes a retaining ring (not shown), which is sleeved on the outer periphery of the sleeve 1, and at least a portion of the crimping portion 22 is located between the sleeve 1 and the retaining ring.

[0044] In this embodiment, by setting a retaining ring, the crimping portion 22 pressed against the outer wall of the sleeve 1 can be limited between the sleeve 1 and the retaining ring, so as to prevent the crimping portion 22 from accidentally lifting up and affecting the connection effect with the sleeve 1. Two retaining rings can be set, respectively corresponding to the crimping portions 22 located at both ends of the sleeve 1. When setting the retaining rings, the retaining rings are sleeved on the outer circumference of the sleeve 1 from both ends, arranged along the bending direction of the crimping portion 22, and press the crimping portion 22 against the outer wall of the sleeve 1 to fix it, so that the crimping portion 22 is pressed more tightly against the sleeve 1. The two retaining rings can be connected to form an outer cylinder, which is beneficial to the stability of the overall structure.

[0045] In actual implementation, the retaining ring can also be crimped with the sleeve 1 to firmly fix the crimping part 22 crimped on the outer wall of the sleeve 1 between the sleeve 1 and the retaining ring.

[0046] In one embodiment of this utility model, such as Figure 1 As shown, the outer wall of the sleeve 1 is provided with a limiting groove (not shown) corresponding to each crimping part 22, and the crimping part 22 is limited within the limiting groove.

[0047] In this embodiment, by limiting the engagement of the crimping part 22 with the limiting groove, the crimping part 22 can be prevented from sliding on the outer wall surface of the sleeve 1, thus avoiding affecting the stability of the positions of the connector 2 and the elastic contact.

[0048] In actual implementation, the crimping part 22 that abuts against the outer wall surface of the sleeve 1 can be arranged parallel to the outer wall surface of the sleeve 1. The shape and size of the limiting groove are consistent with the shape and size of the crimping part 22, so as to limit the crimping part 22 in both the axial and circumferential directions of the sleeve 1, effectively improving the reliability of the connection between the connector 2 and the sleeve 1.

[0049] In one embodiment of this utility model, such as Figures 2 to 4 As shown, the elastic grid bar 3 is bent along the axial direction of the sleeve 1.

[0050] Understandably, the elastic grid strip 3 protrudes inward towards the insertion cavity 4 to structurally enhance its elasticity, allowing it to abut more tightly against the insertion terminal. Therefore, in this embodiment, the elastic grid strip 3 is bent along the axial direction of the sleeve 1. Simultaneously, the bending of the elastic grid strip 3 also helps eliminate internal stress generated during molding, thus improving the service life of the elastic contact. It should be noted that the bending in this embodiment can be either a bend or a curve.

[0051] In actual implementation, the elastic grid 3 can be bent radially along the insertion cavity 4, that is, the insertion cavity 4 has a variable cross-sectional area in the section perpendicular to the axial direction, or it can be bent circumferentially in the insertion cavity 4. The elastic grid 3 can be formed by torsion.

[0052] In one embodiment of this utility model, such as Figure 1 and Figure 3 As shown, the elastic grid bar 3 includes at least a first segment 31 and a second segment 32 arranged at an angle, and the first segment 31 and the second segment 32 are connected by a connecting segment 33; wherein, on the projection along the circumference of the sleeve 1, the first segment 31 and the second segment 32 are arranged in a straight line, and the connecting segment 33 is arranged in a curved shape.

[0053] In this embodiment, when the first segment 31, the second segment 32, and the connecting segment 33 of the elastic grid 3 are projected onto the circumferential surface of the sleeve 1 and the projection is unfolded to form a plane, the first segment 31 and the second segment 32 of the elastic grid 3 are straight, while the connecting segment 33 is curved. Furthermore, the first segment 31 and the second segment 32 are inclined to connect to the two ends of the connecting segment 33. This eliminates the internal stress generated during the forming of the elastic grid 3, improving the structural reliability of the elastic contact. It also increases the deformation space of the elastic grid 3 in the circumferential direction, giving the elastic grid 3 better vibration resistance.

[0054] In this embodiment, the elastic grid 3 is divided into two segments. The first segment 31 and the second segment 32 are respectively connected to two connectors 2, and the first segment 31 and the second segment 32 are connected by a connecting segment 33. In actual implementation, the elastic grid 3 may also include a first segment 31, a second segment 32, and a third segment. The first segment 31 and the second segment 32 are connected by a connecting segment 33, the second segment 32 and the third segment are connected by a connecting segment 33, and the first segment 31 and the third segment are respectively connected to two connectors 2. Similarly, the elastic grid 3 may also include a fourth segment, a fifth segment, etc., without specific limitations.

[0055] In one embodiment of this utility model, such as Figure 1 and Figure 3 As shown, the first segment 31 and the second segment 32 are arranged to protrude into the inner side of the insertion cavity 4.

[0056] In this embodiment, the first segment 31, the second segment 32 and the connecting segment 33 are all protruding into the insertion cavity 4 from both ends to the middle, so as to increase the deformation space of the elastic grid 3 in the radial direction of the insertion cavity 4, so that the elastic grid 3 has sufficient deformation capability to abut against the pin terminal, thereby improving the electrical connection stability of the socket electrical contact assembly 100 and the pin terminal.

[0057] Understandably, the middle part of the first segment 31 and the second segment 32 protrudes towards the inside of the insertion cavity 4. Conversely, the connection between the first segment 31 and the connector 2, the connection between the second segment 32 and the connector 2, and the connection between the first segment 31 and the second segment 32 protrude towards the outside of the insertion cavity 4 to abut against the cavity wall.

[0058] In one embodiment of this utility model, the sleeve 1 is formed by stamping. Stamping the sleeve 1 with a die can effectively improve the production efficiency of the sleeve 1. The connector 2 can also be stamped together with the sleeve 1 to further improve the production efficiency of the socket electrical contact assembly 100 and reduce the production cost of the socket electrical contact assembly 100.

[0059] Optionally, the connector 2 and the elastic grid 3 are integrally formed, so that the connector 2 and the elastic contact are integrated, which is beneficial to the assembly of the socket electrical contact assembly 100 and reduces the production cost of the socket electrical contact assembly 100.

[0060] This utility model also proposes an electrical connector, which includes a socket electrical contact assembly 100 and a pin terminal. The specific structure of the socket electrical contact assembly 100 is as described in the above embodiments. Since this second subject adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. The pin terminal is inserted into the through cavity 11 and abuts against the elastic grid strip 3.

[0061] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A socket electrical contact assembly, characterized in that, The socket electrical contact assembly includes: Sleeve, wherein the sleeve is provided with a through cavity; Two connectors, the two connectors being connected to both ends of the sleeve; and An elastic contact is provided in the through cavity. The elastic contact is provided for the insertion of the pin terminal into the insertion cavity. The elastic contact includes a plurality of elastic bars. The two ends of each elastic bar are respectively connected to two connectors. The plurality of elastic bars are arranged at intervals along the circumference of the sleeve to form the insertion cavity. The cross section of each elastic bar perpendicular to the axial direction of the insertion cavity is semi-circular.

2. The socket electrical contact assembly as described in claim 1, characterized in that, The radius of the cross section of the elastic grid bar perpendicular to the axial direction of the insertion cavity is defined as t, and the distance between two adjacent elastic grid bars is no greater than 0.5t.

3. The socket electrical contact assembly as described in claim 2, characterized in that, Each of the connectors includes a ring portion and at least two crimping portions. The ring portion is disposed within the cavity. The elastic grid strip and the crimping portions are connected to both ends of the ring portion. At least a portion of the crimping portions is crimped against the outer wall surface of the sleeve.

4. The socket electrical contact assembly as described in claim 3, characterized in that, The socket electrical contact assembly further includes a retaining ring, which is sleeved on the outer periphery of the sleeve, and at least a portion of the crimping portion is located between the sleeve and the retaining ring.

5. The socket electrical contact assembly as described in claim 3, characterized in that, The outer wall of the sleeve is provided with a limiting groove corresponding to each of the pressing parts, and the pressing part is limited to the limiting groove.

6. The socket electrical contact assembly as claimed in claim 1, characterized in that, The elastic grid bars are bent along the axial direction of the sleeve.

7. The socket electrical contact assembly as described in claim 6, characterized in that, The elastic grid bar includes at least a first segment and a second segment arranged at an included angle, and the first segment and the second segment are connected by a connecting segment; In the projection along the circumference of the sleeve, the first segment and the second segment are arranged in a straight line, while the connecting segment is arranged in a curved shape.

8. The socket electrical contact assembly as claimed in claim 7, characterized in that, The first segment and the second segment are arranged to protrude into the inner side of the insertion cavity.

9. The socket electrical contact assembly as described in any one of claims 1 to 8, characterized in that, The sleeve is formed by stamping; And / or, the connector and the elastic grid strip are integrally formed.

10. An electrical connector, characterized in that, The electrical connector includes pin terminals and a socket electrical contact assembly as described in any one of claims 1 to 9, wherein the pin terminals are inserted into the cavity and abut against the resilient grid.

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