Connector with cable anti-falling function and charging gun

Abstract

The utility model provides a connector with a cable anti-drop function and a charging gun, and belongs to the technical field of charging guns, and the connector comprises a housing which is provided with a first end face and a through groove, and the through groove penetrates through the first end face; the clamping ring is clamped to the cable, and at least three contact areas are formed between the inner side wall of the clamping ring and the outer side wall of the cable through deformation of the clamping ring; and the limiting piece is nested on the cable, is located between the clamping ring and the end face of the first end, and is in abutting fit with the clamping ring and the end face of the first end along the two sides of the axis direction of the limiting piece. According to the utility model, the snap ring and the cable form an integrated structure through the cooperation between the snap ring and the cable, relative slippage does not occur between the snap ring and the cable, and the degree of freedom of the snap ring in the axial direction is limited through the abutting connection between the limiting member and the snap ring and between the limiting member and the end face of the first end, so that the degree of freedom of the cable in the axial direction is limited. And the anti-falling function of the cable is realized.

Description

Technical Field

[0001] This utility model belongs to the field of charging gun technology, and relates to a connector, particularly a connector with cable anti-disconnection function and a charging gun. Background Technology

[0002] As a promising green transportation tool, new energy electric vehicles will see rapid popularization as technology advances. The main charging infrastructure for new energy electric vehicles includes charging piles, charging guns, charging sockets, and in-vehicle high-voltage connectors. The charging device connects to the charging cable via connectors (charging guns, charging sockets). These connectors are crucial for connecting the new energy electric vehicle to the power supply equipment; current connectors include both DC and AC chargers.

[0003] Some existing charging guns have a problem where the cable at the connection between the gun body and the charging cable can become loose after prolonged use, causing the charging cable to come off the gun body and affecting the lifespan of the charging gun. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a connector that can prevent cable detachment.

[0005] The objective of this utility model can be achieved through the following technical solution: a connector with cable anti-disconnection function, comprising:

[0006] The housing has a first end face and a through groove along the axial direction of the housing for cable routing, wherein the through groove passes through the first end face;

[0007] A retaining ring is attached to one end of a cable within a through groove. The deformation of the retaining ring causes at least three contact areas between the inner wall of the retaining ring and the outer wall of the cable. These contact areas limit the mutual sliding of the retaining ring and the cable along the axial direction.

[0008] A limiting member is nested on the cable and located between the retaining ring and the first end face. The two sides along the axis of the limiting member are the first limiting part and the second limiting part, respectively. The first limiting part abuts and cooperates with the retaining ring, and the second limiting part abuts and cooperates with the first end face. The maximum edge diameter of the limiting member is greater than the diameter of the through groove and smaller than the maximum diameter of the first end face.

[0009] In the connector with cable anti-dislodgement function described above, the first limiting part is the first limiting surface, which forms a surface-to-surface contact with the retaining ring, and the second limiting part is the second limiting surface, which forms a surface-to-surface contact with the first end face.

[0010] In the aforementioned connector with cable anti-dislodgement function, the contact area between the inner wall of the deformed retaining ring and the outer wall of the cable is either line-to-surface contact or surface-to-surface contact.

[0011] In the aforementioned connector with cable anti-dislodgement function, the deformed retaining ring is polygonal in shape.

[0012] In the aforementioned connector with cable anti-dislodgement function, a sealing element is provided between the limiting element and the first end face, and the sealing element is nested and fitted with the cable. The two sides of the sealing element along the axial direction respectively abut against the limiting element and the first end face.

[0013] In the aforementioned connector with cable anti-disconnection function, multiple flanges are provided on the outer peripheral surface of the seal, and the multiple flanges are distributed along the axial direction of the seal.

[0014] In the aforementioned connector with cable anti-disconnection function, the housing includes a separable outer shell and an end cap, and the outer shell is hollow. The end cap is provided with a through groove for cable routing, wherein the first end face is provided on the end cap.

[0015] In the aforementioned connector with cable anti-disconnection function, a detachable structure is provided between the housing and the end cap, and a part of the detachable structure is provided on the side wall of the housing, while another part of the detachable structure is provided on the side wall of the end cap.

[0016] In the aforementioned connector with cable anti-dislodgement function, the first limiting part of the limiting member is also provided with an anti-twist part, and the anti-twist part is nested and cooperates with the retaining ring. At least one limiting plane on the inner circumferential surface of the anti-twist part is in surface-to-surface contact with the outer circumferential surface of the retaining ring.

[0017] This utility model also provides a charging gun, including the connector with cable anti-disconnection function.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] (1) The present invention provides a connector with cable anti-detachment function. The cooperation between the retaining ring and the cable makes the retaining ring and the cable form an integral structure, and there is no relative slippage between the two. The abutment between the limiting member and the retaining ring and the first end face limits the degree of freedom of the retaining ring along the axial direction, thereby limiting the degree of freedom of the cable along the axial direction and realizing the cable anti-detachment function.

[0020] (2) Surface-to-surface contact can provide a larger contact area than point or line contact, thereby improving the stability and reliability of the limit. In addition, due to the increase in contact area, the force applied to the structural component can be distributed more evenly, reducing the occurrence of local stress concentration.

[0021] (3) The deformation of the retaining ring and the cable causes the retaining ring and the cable to form a whole. This limits the axial movement of the cable while limiting the axial movement of the retaining ring, thereby achieving the purpose of preventing the cable from falling off. The wire-to-surface contact and surface-to-surface contact can increase the contact area between the retaining ring and the cable, thereby further preventing relative slippage between the retaining ring and the cable;

[0022] (4) By setting the sealing element, the relative distance between the retaining ring and the first end face is increased, and the sealing element has a certain strength, which can further realize the anti-detachment function of the cable.

[0023] (5) By setting multiple flanges on the outer circumferential surface of the seal, and the seal is generally made of flexible material, when the seal is embedded in the housing, the flanges on the seal will be squeezed and deformed, thereby increasing the friction between the seal and the inner wall of the housing. On the one hand, it can further improve the waterproof and dustproof effect, and on the other hand, it can improve the anti-detachment ability of the seal, thereby further indirectly improving the anti-detachment ability of the cable.

[0024] (6) The housing is disassembled into a separable outer shell and end caps to facilitate connector assembly and cable replacement;

[0025] (7) By setting an anti-twist part, the cable is prevented from twisting inside the housing. When the cable is subjected to repeated torsional stress, the conductor and insulation layer inside may be damaged due to fatigue. By setting an anti-twist part, the impact of this stress on the cable can be effectively reduced, and the service life of the cable can be extended. In addition, the setting of the anti-twist part helps to maintain the stability of the internal electrical performance of the cable and ensure the quality of signal transmission. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a connector with cable anti-detachment function in Embodiment 1 of this utility model.

[0027] Figure 2 yes Figure 1 The connector shown is illustrated from another perspective.

[0028] Figure 3 yes Figure 2 A cross-sectional view along the cutting line AA.

[0029] Figure 4 yes Figure 1 The diagram shows the internal structure of the connector.

[0030] Figure 5 yes Figure 4 The diagram shows a partial structure.

[0031] Figure 6 yes Figure 1 The diagram shows the structural schematic of the housing in the connector.

[0032] Figure 7 This is a schematic diagram of the structure of a connector with cable anti-detachment function in Embodiment 2 of this utility model.

[0033] Figure 8 yes Figure 7 The connector shown is illustrated from another perspective.

[0034] Figure 9 yes Figure 8 A cross-sectional view along the cutting line BB.

[0035] Figure 10 yes Figure 7 The diagram shows the internal structure of the connector.

[0036] In the picture,

[0037] 10. Housing; 11. Outer shell; 111. Locking block; 12. End cap; 121. First end face; 122. Through groove; 123. Locking slot;

[0038] 20. Cables;

[0039] 30. Snap ring; 31. Contact area;

[0040] 40. Limiting component; 41. First limiting part; 42. Second limiting part; 43. Anti-torsion part; 431. Limiting plane;

[0041] 50. Seal; 51. Flange. Detailed Implementation

[0042] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0043] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0044] Example 1

[0045] like Figures 1 to 6 As shown, the present invention provides a connector with cable anti-disconnection function, comprising:

[0046] The housing 10 has a first end face 121 and a through groove 122 along the axial direction of the housing 10 for the cable 20 to run through. The through groove 122 passes through the first end face 121.

[0047] The retaining ring 30 is snapped onto one end of the cable 20 located in the through groove 122, and the deformation of the retaining ring 30 causes at least three contact areas 31 between the inner side wall of the retaining ring 30 and the outer side wall of the cable 20, and the contact areas 31 limit the mutual sliding of the retaining ring 30 and the cable 20 along the axial direction.

[0048] The limiting member 40 is nested on the cable 20 and located between the retaining ring 30 and the first end face 121. The two sides along the axial direction of the limiting member 40 are respectively the first limiting part 41 and the second limiting part 42. The first limiting part 41 abuts and cooperates with the retaining ring 30, and the second limiting part 42 abuts and cooperates with the first end face 121. The maximum edge diameter of the limiting member 40 is greater than the diameter of the through groove 122 and less than the maximum diameter of the first end face 121.

[0049] The present invention provides a connector with cable anti-detachment function. The retaining ring 30 and the cable 20 are integrated into a single structure through the cooperation between the retaining ring 30 and the cable 20, and there is no relative slippage between the two. The retaining member 40 abuts against the retaining ring 30 and the first end face 121, thereby limiting the degree of freedom of the retaining ring 30 in the axial direction, and thus limiting the degree of freedom of the cable 20 in the axial direction, so as to realize the cable 20 anti-detachment function.

[0050] It is further pointed out that the first limiting part 41 is the first limiting surface, which forms a surface-to-surface contact with the retaining ring 30, and the second limiting part 42 is the second limiting surface, which forms a surface-to-surface contact with the first end surface 121.

[0051] It is worth mentioning that surface-to-surface contact provides a larger contact area compared to point or line contact, thereby improving the stability and reliability of the limit. In addition, due to the increased contact area, the force applied to the structure can be distributed more evenly, reducing the occurrence of local stress concentration.

[0052] It is worth mentioning that the limiting component 40 is set in the shape of a circular plate, such as a gasket.

[0053] Preferably, the contact area 31 between the inner wall of the deformed retainer 30 and the outer wall of the cable 20 can be a line-to-surface contact or a surface-to-surface contact.

[0054] It is worth mentioning that the outer contour of the cable 20 is generally circular. To ensure that the retaining ring 30 can easily engage with the cable 20, the through hole of the retaining ring 30 is also circular. However, this results in an assembly gap between the retaining ring 30 and the cable 20. To eliminate this gap, the retaining ring 30 is designed to have a deformation function, and the cable 20 also has a deformation function. The deformation of both the retaining ring 30 and the cable 20 causes them to form a single unit. This limits both the axial movement of the retaining ring 30 and the axial movement of the cable 20, thus preventing the cable 20 from detaching. Furthermore, the wire-to-surface and surface-to-surface contact increases the contact area between the retaining ring 30 and the cable 20, further preventing relative slippage between them.

[0055] Furthermore, the deformed retaining ring 30 is polygonal in shape, and more preferably, the deformed retaining ring 30 is hexagonal or octagonal.

[0056] Preferably, a sealing member 50 is provided between the limiting member 40 and the first end face 121, and the sealing member 50 is nested and cooperates with the cable 20, wherein the two sides of the sealing member 50 along the axial direction abut against the limiting member 40 and the first end face 121 respectively.

[0057] It is worth mentioning that in practical applications, the charging gun may be installed outdoors or indoors. When the charging gun is installed outdoors, the weather is changeable, and there may be strong winds or rain. The charging gun exposed to the air will be corroded by rainwater, causing rainwater or dust to enter the charging gun, affecting the safety and service life of the charging gun. In this embodiment, by setting a seal 50 in the connector, rainwater, water vapor or dust can be prevented from entering the charging gun, thereby ensuring the safety and service life of the charging gun.

[0058] In addition, the sealing element 50 increases the relative distance between the retaining ring 30 and the first end face 121. Moreover, the sealing element 50 has a certain strength, which can further realize the anti-detachment function of the cable 20. If you want to pull the cable 20 out of the housing 10, you need a considerable pulling force. This usually only happens in destructive tests. Under normal use, the cable 20 cannot be pulled out of the housing 10.

[0059] Furthermore, it is noted that multiple flanges 51 are provided on the outer peripheral surface of the seal 50, and the multiple flanges 51 are distributed along the axial direction of the seal 50.

[0060] In this embodiment, by providing multiple flanges 51 on the outer peripheral surface of the seal 50, and by generally using a flexible material such as rubber, when the seal 50 is embedded in the housing 10, the flanges 51 on the seal 50 will be squeezed and deformed, thereby increasing the friction between the seal 50 and the inner wall of the housing 10. On the one hand, this can further improve the waterproof and dustproof effect, and on the other hand, it can improve the anti-detachment ability of the seal 50, thereby indirectly improving the anti-detachment ability of the cable 20.

[0061] It is worth mentioning that the multiple flanges 51 on the outer peripheral surface of the seal 50 can also be configured as external threads, and internal threads can be configured on the inner wall of the housing 10. The effect described above can be achieved through the screw connection between the external threads and the internal threads, and it can also facilitate the replacement of the seal 50 due to aging after long-term use.

[0062] Preferably, the housing 10 includes a separable outer shell 11 and an end cap 12, and the outer shell 11 is hollow, and the end cap 12 is provided with a through groove 122 for the cable 20 to run, wherein the first end face 121 is provided on the end cap 12.

[0063] In this embodiment, the housing 10 is disassembled into a separable outer shell 11 and an end cap 12 to facilitate the assembly of the connector and the replacement of the cable 20.

[0064] Furthermore, since the outer shell 11 and the end cap 12 are separable structures, in order to facilitate the fixing and disassembly of the outer shell 11 and the end cap 12, and to provide a good limiting function for both in the fixed state, a detachable structure is provided between the outer shell 11 and the end cap 12, and a part of the detachable structure is provided on the side wall of the outer shell 11, and another part of the detachable structure is provided on the side wall of the end cap 12.

[0065] It is worth mentioning that the detachable structure can take various forms, such as a snap-fit ​​structure, a threaded structure, or a pin structure, and is not limited to the methods mentioned above.

[0066] For ease of understanding, this embodiment uses snap-fit ​​structures and threaded structures as examples for description.

[0067] When the detachable structure is a snap-fit ​​structure, the detachable structure includes a snap-fit ​​block 111 and a snap-fit ​​groove 123. The snap-fit ​​block 111 is disposed on one of the side walls of the housing 11 and the end cover 12, and the snap-fit ​​groove 123 is disposed on the other of the side walls of the housing 11 and the end cover 12. The connection between the housing 11 and the end cover 12 is realized through the snap-fit ​​engagement between the snap-fit ​​block 111 and the snap-fit ​​groove 123.

[0068] Furthermore, when the card block 111 is disposed on the side wall of the housing 11 and the card slot 123 is disposed on the side wall of the end cover 12, the number of card blocks 111 and the number of card slots 123 can be multiple, and the multiple card blocks 111 are arranged in a ring along the outer peripheral surface of the housing 11, and the card slots 123 are arranged in a ring along the side wall of the end cover 12 and penetrate through the side wall of the end cover 12.

[0069] Similarly, when the locking block 111 is disposed on the side wall of the end cover 12 and the locking groove 123 is disposed on the side wall of the outer shell 11, the number of locking blocks 111 and the number of locking grooves 123 can be multiple, and the multiple locking blocks 111 are arranged in a ring along the inner circumferential surface of the end cover 12, and the locking grooves 123 are arranged in a ring along the side wall of the outer shell 11 and penetrate through the side wall of the end cover 12.

[0070] Furthermore, when the locking block 111 is disposed on the outer peripheral surface of the housing 11 or the inner peripheral surface of the end cover 12, the radial cross section of the locking block 111 is trapezoidal, wherein the inclined surface of the locking block 111 is provided as an arc-shaped curved surface.

[0071] When the detachable structure is a threaded structure, the detachable structure includes an external thread and an internal thread, and the external thread is provided on the outer peripheral surface of the housing 11, and the internal thread is provided on the inner peripheral surface of the end cover 12. The connection between the housing 11 and the end cover 12 is completed by the screwing between the external thread and the internal thread.

[0072] Example 2

[0073] like Figures 7 to 10 As shown, compared with Embodiment 1, the difference in this embodiment is that an anti-twist part 43 is also provided on the first limiting part 41 of the limiting member 40 in this embodiment, and the anti-twist part 43 is nested with the retaining ring 30. At least one limiting plane 431 on the inner circumferential surface of the anti-twist part 43 is in surface contact with the outer circumferential surface of the retaining ring 30.

[0074] It is worth mentioning that by setting the anti-twist part 43, the cable 20 is prevented from twisting inside the housing 10. When the cable 20 is subjected to repeated torsional stress, the conductor and insulation layer inside may be damaged due to fatigue. By setting the anti-twist part 43, the impact of such stress on the cable 20 can be effectively reduced, and the service life of the cable 20 can be extended. In addition, the setting of the anti-twist part 43 helps to maintain the stability of the internal electrical performance of the cable 20 and ensure the quality of signal transmission.

[0075] Furthermore, the outline shape of the anti-torsion part 43 is the same as that of the retaining ring 30. That is, the anti-torsion part 43 is polygonal, and more preferably, the anti-torsion part 43 is hexagonal or octagonal.

[0076] It should be noted that in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly defined. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0077] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0078] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A connector with cable anti-disconnection function, characterized in that, include: A housing (10) is provided with a first end face (121) and a through groove (122) along the axial direction of the housing (10) for the cable (20) to run through, wherein the through groove (122) passes through the first end face (121); A retaining ring (30) is engaged with one end of the cable (20) located in the through groove (122), and the deformation of the retaining ring (30) causes at least three contact areas (31) between the inner sidewall of the retaining ring (30) and the outer sidewall of the cable (20), and the contact areas (31) limit the retaining ring (30) to slide relative to the cable (20) along the axial direction; A limiting member (40) is nested on the cable (20) and located between the retaining ring (30) and the first end face (121). The two sides of the limiting member (40) along the axial direction are a first limiting part (41) and a second limiting part (42), wherein the first limiting part (41) abuts against the retaining ring (30), and the second limiting part (42) abuts against the first end face (121). The maximum edge diameter of the limiting member (40) is greater than the diameter of the through groove (122) and smaller than the maximum diameter of the first end face (121).

2. The connector with cable anti-dislodgement function according to claim 1, characterized in that, The first limiting part (41) is a first limiting surface, which forms a surface-to-surface contact with the retaining ring (30), and the second limiting part (42) is a second limiting surface, which forms a surface-to-surface contact with the first end face (121).

3. The connector with cable anti-dislodgement function according to claim 1, characterized in that, The contact area (31) between the inner wall of the deformed retaining ring (30) and the outer wall of the cable (20) is either a line-to-surface contact or a surface-to-surface contact.

4. The connector with cable anti-dislodgement function according to claim 3, characterized in that, The deformed retaining ring (30) is polygonal in shape.

5. The connector with cable anti-dislodgement function according to claim 1, characterized in that, A sealing member (50) is provided between the limiting member (40) and the first end face (121), and the sealing member (50) is nested with the cable (20). The two sides of the sealing member (50) along the axial direction respectively abut against the limiting member (40) and the first end face (121).

6. The connector with cable anti-dislodgement function according to claim 5, characterized in that, The outer peripheral surface of the seal (50) is provided with multiple flanges (51), and the multiple flanges (51) are distributed along the axial direction of the seal (50).

7. The connector with cable anti-disconnection function according to any one of claims 1 to 6, characterized in that, The housing (10) includes a separable outer shell (11) and an end cap (12), and the outer shell (11) is hollow. The end cap (12) is provided with a through groove (122) for the cable (20) to run, wherein the first end face (121) is provided on the end cap (12).

8. The connector with cable anti-dislodgement function according to claim 7, characterized in that, A detachable structure is provided between the outer shell (11) and the end cap (12), and a part of the detachable structure is provided on the side wall of the outer shell (11), while another part of the detachable structure is provided on the side wall of the end cap (12).

9. The connector with cable anti-dislodgement function according to claim 1, characterized in that, The first limiting part (41) of the limiting member (40) is also provided with an anti-twist part (43), and the anti-twist part (43) is nested with the retaining ring (30). At least one limiting plane (431) on the inner circumferential surface of the anti-twist part (43) is in surface contact with the outer circumferential surface of the retaining ring (30).

10. A charging gun, characterized in that, The connector with cable anti-dislodgement function as described in any one of claims 1 to 9.

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