Connector, connector assembly and vehicle

Abstract

The utility model provides a connector, a connector assembly and a vehicle, the connector comprises a terminal, a terminal sheath and a fixing member, the terminal is provided with a spacing groove, and the terminal sheath is provided with a mounting hole. The terminal is arranged in the terminal sheath, the limiting groove on the terminal is arranged corresponding to the mounting hole, the fixing piece extends into the terminal sheath through the mounting hole, and the fixing piece abuts against the limiting groove of the terminal. According to the connector, the terminal sheath is fixed by adding the fixing piece, the terminal can be fixed in the terminal sheath, and the terminal can be limited through the terminal sheath and the fixing piece, so that the problem that a necessary gap needs to be reserved for installation in the design of a terminal bolt fixing mode is solved, the gap position is ensured to be accurate, and the installation efficiency is improved. The structure is relatively more complex, and a larger assembly space is needed; the problems that a bolt fixing structure is long in time consumption in the assembling process, many materials exist, meanwhile, an anti-vibration loosening structure needs to be matched, the consistency of manual assembling is difficult to guarantee, and the manufacturing cost is relatively high are solved.

Description

Technical Field

[0001] The present application relates to the field of electrical transmission technology, and in particular to a connector, a connector assembly and a vehicle. Background Art

[0002] The stable operation of new energy vehicles requires reliable electrical connections. At the same time, due to certain requirements for assembly space, this poses a challenge to the design of connector structures. As an important component in new energy vehicles, the connection strength of the connector determines the stability of the electrical connection of new energy vehicles to a certain extent.

[0003] In the prior art, the terminals in the connector are mainly fixed to the connector housing by bolts. The bolt fastening method has the problem of torque attenuation, which easily leads to the risk of improper installation of the bolts. At the same time, the terminals are fastened by bolts and copper bars. The bolt fastening method design needs to reserve necessary gaps for installation. The gap position must be accurate, and the structure is relatively more complex, requiring a larger assembly space. The bolt fastening structure takes a long time to assemble, and requires more materials. At the same time, it needs to cooperate with the shockproof release structure. The consistency of manual assembly is difficult to ensure, and the manufacturing cost is relatively high. Utility Model Content

[0004] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section of this application does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0005] An object of the present application is to provide a connector that at least solves the above-mentioned problem.

[0006] Terminal, with a limiting groove on the terminal;

[0007] A terminal sheath, wherein a mounting hole is provided on the terminal sheath;

[0008] Fixings;

[0009] The terminal is arranged in the terminal sheath, the limiting groove is arranged corresponding to the mounting hole, the fixing piece extends into the terminal sheath through the mounting hole, and the fixing piece cooperates with the limiting groove of the terminal.

[0010] Optionally, the fixing member includes a limiting portion, which is passed through the mounting hole and cooperates with the limiting groove to achieve axial limiting of the terminal.

[0011] Preferably, the limiting portion is a square key, and the square key cooperates with the limiting groove.

[0012] Furthermore, the terminal is provided with two limiting grooves, and the two limiting grooves are symmetrical about the axis of the terminal; the limiting portion includes two square keys; and the distance between the two limiting grooves is equal to the distance between the two square keys.

[0013] Optionally, the fixing member includes a clamping portion; the terminal sleeve is provided with a clamping groove at the mounting hole, and the clamping portion is clamped in the clamping groove.

[0014] Optionally, the fixing member includes a main body, the limiting portion and the clamping portion are both connected to the main body, and the main body cooperates with the mounting hole of the terminal sleeve.

[0015] Optionally, a mounting groove is provided in the terminal sheath, the terminal is inserted into the mounting groove, and the inner side wall of the mounting groove cooperates with the terminal to achieve position limitation of the terminal in a direction perpendicular to the axis.

[0016] In some structures of the related art, the terminals inside the connector are fixed mainly by bolt connection. The bolt fastening method has the risks of torque attenuation and improper installation of the bolts, and overlapping terminals are used at the transition point, which increases the cost. The terminals are fastened by bolts and copper bars. The bolt fixing method design needs to reserve necessary gaps for installation. The gap position needs to be accurate, and the structure is relatively more complicated. The assembly process of the bolt fixing structure is time-consuming and requires a lot of materials. The bolts need to be equipped with shock-proof and anti-loosening structures. The consistency of manual assembly is difficult to ensure, and the manufacturing cost is relatively high. The difference between the present application and the prior art is that the terminals are fixed by the design of the internal structure of the connector and the newly added fixings, so as to ensure that the terminals are not subjected to large stress when installed in the connector, and ensure the installation strength and ease of installation of the connector.

[0017] Optionally, the connector further comprises a connector housing, the connector housing is provided with a first circular groove, a first through hole is provided at the bottom of the first circular groove; the first circular groove is gap-matched with the terminal sheath, and the terminal sheath is bolted to the first circular groove.

[0018] Optionally, an annular groove is provided on the connector housing, a sealing ring is provided on the annular groove, and an outer side wall of the sealing ring is interference fit with the annular groove.

[0019] Optionally, the connector also includes: a shielding ring and a crimping ring; a second circular groove is provided at the other end of the connector housing away from the first circular groove, and a first mounting portion is provided in the second circular groove; the shielding ring is arranged in the first mounting portion, one end of the crimping ring is passed through the shielding ring and is fixedly connected to the first mounting portion, and a limiting boss is provided at the other end of the crimping ring for fixing the shielding ring in the first mounting portion.

[0020] Optionally, a second mounting portion is provided at the opening of the second circular groove, a sealing sleeve is provided on the second mounting portion, and an outer wall of the sealing sleeve is interference fit with an inner wall of the second mounting portion.

[0021] Optionally, the connector further comprises: a tail cover, wherein the tail cover is provided with a snap-in groove at the opening, and a snap-in protrusion is provided on the outer side wall of the second circular groove, and the snap-in protrusion is snap-fitted into the snap-in groove to fix the tail cover on the connector housing.

[0022] Optionally, a second through hole is provided on the tail cover, and the axis of the second through hole coincides with the axis of the first through hole.

[0023] According to a second aspect of the present application, a connector assembly is provided, comprising a cable, a connector socket and the above-mentioned connector. The cable extends into the terminal sheath to be electrically connected to the terminal, and the connector is inserted into the connector socket to be electrically connected to the connector socket.

[0024] According to a third aspect of the present application, a vehicle is provided, comprising a power battery, a distribution box and the connector assembly described above, wherein the power battery is electrically connected to the distribution box via the connector assembly.

[0025] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The following drawings of the embodiments of the present application are used as a part of the present application for understanding the present application. The drawings show the embodiments of the present application and their descriptions, which are used to explain the principle of the present application.

[0027] In the accompanying drawings,

[0028] Figure 1 is a connector assembly diagram of a preferred embodiment of the present application;

[0029] Figure 2 yes Figure 1 A three-dimensional schematic diagram of a fixing member;

[0030] Figure 3 yes Figure 1 A three-dimensional schematic diagram of the middle terminal;

[0031] Figure 4 yes Figure 1 Assembly drawing of the fixings and terminals;

[0032] Figure 5 yes Figure 1 A cross-sectional view of the assembly state of the middle terminal housing, terminal and fixing parts;

[0033] Figure 6 yes Figure 1 A three-dimensional schematic diagram of a connector housing;

[0034] Figure 7 yes Figure 1 A cross-sectional view of the connector;

[0035] Description of Reference Numerals

[0036] 1. Terminal sleeve; 11. Mounting hole; 12. Card slot; 13. Mounting slot; 2. Fixing piece; 21. Limiting part; 22. Card connection part; 23. Main body; 3. Terminal; 31. Limiting slot; 4. Sealing ring; 5. Connector housing; 51. First circular groove; 52. Annular groove; 53. First through hole; 54. Screw hole; 55. Second circular groove; 56. First mounting part; 57. Second mounting part; 58. Card connection protrusion; 6. Shielding ring; 7. Crimp ring; 8. Sealing sleeve; 9. Tail cover; 10. Cable. DETAILED DESCRIPTION

[0037] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present application. However, it is obvious to those skilled in the art that the present application embodiments can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present application embodiments, some technical features well known in the art are not described.

[0038] Herein, ordinal numbers such as “first” and “second” cited in the present application are merely identifications and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term “first component” itself does not imply the existence of the “second component”, and the term “second component” itself does not imply the existence of the “first component”.

[0039] In this document, “upper”, “lower”, “front”, “back”, “left”, “right”, etc. are only used to indicate the relative position relationship between related parts, rather than to limit the absolute positions of these related parts.

[0040] In this document, “equal”, “same”, etc. are not strictly limited in a mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and are allowed in manufacturing or use.

[0041] Unless otherwise stated, the numerical ranges herein include not only the entire range within its two endpoints but also include several sub-ranges contained therein.

[0042] like Figure 1 As shown, the connector according to the utility model includes a terminal sheath 1, a fixing member 2, a terminal 3, a sealing ring 4, a connector 5, a shielding ring 6, a crimping ring 7, a sealing sleeve 8, and a tail cover 9.

[0043] Specifically, if Figure 2As shown, the fixing member 2 includes three parts: a limiting portion 21, a clamping portion 22 and a main body 23. More specifically, the limiting portion 21 is a protruding long square key, the end of the clamping portion 22 is provided with a buckle for clamping, and the main body 23 is a semicircle adapted to the outer side of the terminal sheath.

[0044] As a preferred embodiment of the utility model, the fixing member 2 is provided with two square keys as the limiting parts 21, and the two square keys are symmetrical about the axis of the fixing member 2 to ensure stable limiting of the terminal 3. The two square keys are respectively arranged at the two ends of the main body 23.

[0045] As a preferred embodiment of the utility model, the clamping portion 22 is arranged on one side of the middle part of the main body 23, the clamping portion 22 is in the shape of a short key, the end of the clamping portion 22 is provided with a buckle adapted to the terminal sleeve, and the cross-section of the clamping portion 22 is a rectangle, and the long side of the rectangle is parallel to the line between the two long keys, ensuring that the plane where the clamping portion 22 is located is not in the same plane as the two long keys.

[0046] like Figure 3 As shown, a limiting groove 31 is provided on the terminal 3, and the terminal 3 is arranged in the terminal sheath 1. More specifically, the depth of the limiting groove 31 is the same as the width of the long key, ensuring that the long key can be just fitted in the limiting groove 31.

[0047] As a preferred embodiment of the present utility model, two identical limiting grooves 31 are provided on the terminal 3 , and the two limiting grooves 31 are symmetrical about the axis of the terminal 3 .

[0048] As an optional embodiment, terminal 3 can be selected as follows Figure 3 The lug terminals shown are also available with cylindrical terminals.

[0049] like Figure 4 As shown, the preferred connector of the utility model includes two identical terminals 3 and two identical fixing members 2. The limiting portions 21 of the two fixing members 2 are respectively matched with the limiting grooves 31 of the terminals 3. Specifically, the distance between the two limiting grooves 31 is equal to the distance between the two limiting portions 21, so as to achieve stable limiting of the terminals 3 by the fixing members 2.

[0050] like Figure 5 As shown, the connection relationship between the terminal sheath 1, the fixing member 2 and the terminal 3 can be clearly shown. The terminal 3 is inserted into the terminal sheath 1, and more specifically, the terminal 3 is inserted into the mounting groove 13 in the terminal sheath 1.

[0051] Furthermore, the inner wall shape of the mounting groove 13 matches the outer shape of the terminal 3, so as to limit the terminal 3 perpendicular to the axial direction. At the same time, the terminal sheath 1 is provided with a mounting hole 11 at a position corresponding to the limiting groove 31 of the terminal 3 to ensure the installation of the fixing member 2 and the terminal sheath 1.

[0052] Specifically, the limiting portion 21 of the fixing member 2 penetrates into the terminal sheath 1 through the mounting hole 11. Since the mounting hole 11 corresponds to the limiting groove 31 as described above, the limiting portion 21 can limit the terminal 3 inside the terminal sheath 1. The clamping portion 22 of the fixing member 2 is clamped into the clamping groove 12 of the terminal sheath 1, and the main body 23 of the fixing member 2 can be adapted to the shape of the mounting hole 11, ensuring that the fixing member 2 can be adaptively installed in the terminal sheath 1 and limit the terminal 3.

[0053] In some structures of related technologies, the terminals inside the connector are mainly fixed by bolt connection. The bolt fastening method has risks such as torque attenuation and improper installation of the bolts. In addition, overlapping terminals are used at the transition point, which increases costs. The terminals are fastened by bolts and copper bars. The bolt fastening method requires the necessary gaps to be reserved for installation. The gap position must be accurate, and the structure is relatively more complicated. The assembly process of the bolt-fixed structure is time-consuming and requires more materials. The bolts need to be equipped with shock-proof and anti-loosening structures. The consistency of manual assembly is difficult to ensure, and the manufacturing cost is relatively high. Figure 1 As shown, the difference between the present application and the prior art is that the terminal 3 is fixed by snapping in the design of the internal structure of the connector and the newly added fixing part 2, thereby ensuring that the terminal 3 will not be subjected to large stress when installed in the connector, thereby ensuring the installation strength and ease of installation of the connector.

[0054] like Figure 6 As shown, according to a preferred embodiment of the utility model, the connector housing 5 is provided with a first circular groove 51 on the side facing the terminal sleeve 1, and the inner diameter of the first circular groove 51 is slightly larger than the outer diameter of the terminal sleeve 1 to ensure that the terminal sleeve 1 can be installed in the first circular groove 51, thereby realizing a fixed connection between the terminal sleeve 1 and the connector housing 1.

[0055] Furthermore, two screw holes 54 are provided at the bottom of the first circular groove 51 , and the terminal sleeve 1 is bolted to the connector housing 5 through the screw holes 54 in the first circular groove 51 .

[0056] Furthermore, two identical first through holes 53 are provided in the first circular groove 51 , so that the cable 10 can pass through the first through holes 53 to achieve electrical connection with the terminal 3 after the connector is assembled.

[0057] Further, in Figure 6 The other side of the invisible connector is also provided with a second circular groove. The bottom surface of the second circular groove is provided with a first mounting portion 56 and a second mounting portion 57. For a better explanation of the technical solution, please pay attention to the following description.

[0058] Furthermore, if Figure 6As shown, a snap-fit ​​protrusion 58 is provided at the rear end of the connector for fixing the rear cover 9 .

[0059] For example, in order to ensure the sealing of the entire connector, the embodiments of the present application provide a corresponding sealing structure.

[0060] Specifically, if Figure 7 As shown, according to a preferred embodiment of the utility model, a sealing ring 4 is further provided in the annular groove 52 of the connector housing 5, and the inner side wall of the sealing ring 4 is interference-fitted with the annular groove 52, so that the sealing ring 4 is fixedly arranged in the annular groove 52. A sealing sleeve 8 is provided in the second mounting portion 57 of the connector housing 5, and the sealing sleeve 8 is interference-fitted with the second mounting portion 57, so that the sealing sleeve 8 is fixed in the connector housing 5, and the overall sealing of the connector is achieved.

[0061] Further, as mentioned above, a shielding ring 6 is disposed in the first mounting portion 56 in the connector housing 5, and the inner diameter of the first mounting portion 56 is slightly larger than the shielding ring 6, so that one end of the shielding ring 6 can be mounted inside the first mounting portion 56. The other end of the shielding ring 6 is electrically connected to the shielding layer inside the cable 10 to achieve shielding of the connector.

[0062] Furthermore, a crimping ring 7 is provided inside the shielding ring 6. The outer diameter of one end of the crimping ring 7 is slightly smaller than the inner diameter of the shielding ring 6. One end of the crimping ring 7 extends into the shielding ring 6 and is fixedly connected to the connector housing 5. A limiting boss is provided at the other end of the crimping ring 7 to limit the shielding ring 6 and fix the shielding ring 6 in the connector housing 5.

[0063] Furthermore, a tail cover 9 is provided outside the second circular groove, and a snap-in groove is provided on the tail cover 9, which can snap-in with the snap-in protrusion 58 of the connector housing 5 to fix the tail cover 9 on the connector housing.

[0064] The utility model also provides a connector assembly, comprising:

[0065] Cables;

[0066] a connector socket; and

[0067] According to the preferred connector of the utility model, the cable is electrically connected to the connector, and the connector is electrically connected to the connector socket, so that electrical conduction between the connector components is achieved.

[0068] Furthermore, if Figure 7 As shown, a second through hole is provided on the tail cover 9, and the second through hole is connected to the first through hole 53, and the axes of the second through hole and the first through hole 53 coincide with each other, so as to ensure that the cable 10 can extend into the interior of the connector from the outside of the connector through the first through hole 53 and the second through hole, thereby realizing the electrical connection between the cable 10 and the terminal 3.

[0069] The utility model further provides a vehicle, comprising:

[0070] Power battery;

[0071] Switchboards; and

[0072] The aforementioned connector assembly, the power battery is electrically connected to the distribution box through the connector assembly.

[0073] Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are only for illustration, not for limiting the scope of the present application. It should be understood by those skilled in the art that the above embodiments may 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 connector, characterized in that: include: A terminal, wherein a limiting groove is provided on the terminal; A terminal sheath, wherein the terminal sheath is provided with a mounting hole; Fixings; The terminal is arranged in the terminal sheath, the limiting groove is arranged corresponding to the mounting hole, the fixing piece extends into the terminal sheath through the mounting hole, and the fixing piece cooperates with the limiting groove of the terminal; The fixing member includes a limiting portion, the limiting portion is penetrated through the mounting hole, and the limiting portion cooperates with the limiting groove to limit the terminal in the axial direction; The limiting portion is a square key, and the square key cooperates with the limiting groove.

2. The connector according to claim 1, characterized in that: The terminal is provided with two limiting grooves, and the two limiting grooves are symmetrical about the axis of the terminal; the limiting portion includes two square keys; the distance between the two limiting grooves is equal to the distance between the two square keys.

3. The connector according to claim 2, characterized in that: The fixing member comprises a clamping portion; the terminal sheath is provided with a clamping slot at the mounting hole, and the clamping portion is clamped in the clamping slot.

4. The connector according to claim 3, characterized in that: The fixing member comprises a main body, the limiting part and the clamping part are both connected to the main body, and the main body is matched with the mounting hole of the terminal sleeve.

5. The connector according to claim 1, characterized in that: The terminal sheath is provided with a mounting groove, the terminal is inserted into the mounting groove, and the inner side wall of the mounting groove cooperates with the terminal to achieve the limitation of the terminal along the direction perpendicular to the axis.

6. The connector according to claim 1, characterized in that: The connector also includes a connector housing, the connector housing is provided with a first circular groove, and a first through hole is provided at the bottom of the first circular groove; the first circular groove is gap-matched with the terminal sheath, and the terminal sheath is bolted to the first circular groove.

7. The connector according to claim 6, characterized in that: An annular groove is provided on the connector housing, a sealing ring is provided on the annular groove, and an outer side wall of the sealing ring is interference-fitted with the annular groove.

8. The connector according to claim 6, characterized in that: The connector further comprises: Shielding rings and crimping rings; The connector housing is provided with a second circular groove at the other end away from the first circular groove, and a first mounting portion is provided in the second circular groove; The shielding ring is arranged in the first mounting part, one end of the crimping ring is passed through the shielding ring and is fixedly connected to the first mounting part, and the other end of the crimping ring is provided with a limiting boss for fixing the shielding ring in the first mounting part.

9. The connector according to claim 8, characterized in that: A second mounting portion is disposed at the opening of the second circular groove, a sealing sleeve is disposed on the second mounting portion, and an outer side wall of the sealing sleeve is interference-fitted with an inner side wall of the second mounting portion.

10. The connector according to claim 9, characterized in that: The connector further comprises: Tail cover; The tail cover is provided with a clamping groove at the opening, and a clamping protrusion is provided on the outer side wall of the second circular groove. The clamping protrusion is clamped in the clamping groove to fix the tail cover on the connector housing.

11. The connector according to claim 10, characterized in that: The tail cover is provided with a second through hole, and the axis of the second through hole coincides with the axis of the first through hole.

12. A connector assembly, characterized in that: include: Cables; Connector socket; as well as According to the connector according to any one of claims 1-11, the cable is electrically connected to the connector, and the connector is electrically connected to the connector socket, so as to achieve electrical conduction between the connector components.

13. The connector assembly according to claim 12, characterized in that The cable is inserted into the first through hole and the second through hole of the connector, and the cable extends into the terminal sheath to be electrically connected to the terminal.

14. A vehicle, characterized in that: include: Power battery; Distribution box; as well as According to the connector assembly according to claim 12 or 13, the power battery is electrically connected to the distribution box through the connector assembly.

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