Sealing structure of connector wire end

Abstract

The utility model relates to a sealing structure of a connector wire end, which comprises a connector shell, a sealing ring and a sealing end cover, and is characterized in that the connector shell is provided with a threading pipe for accommodating a cable, and the inner wall of the threading pipe is provided with a limiting bulge along the circumferential direction; the sealing ring sleeves the cable and is at least partially arranged in the threading pipe, one end of the sealing ring in a natural state abuts against the limiting bulge, and the other end of the sealing ring extends out of the threading pipe; the sealing end cover sleeves the cable and is clamped with the threading pipe through the clamping part; one end, facing the sealing end cover, of the sealing ring is propped against the sealing end cover; the sealing end cover is configured to compress the sealing ring in the process from the initial position to the locking position so as to form sealing between the connector shell and the cable. According to the technical scheme, the problems that in the prior art, after the sealing ring moves synchronously along with the cable, distortion deformation occurs, the deformation amount is reduced, and the sealing effect fails are solved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of connectors, and in particular to a sealing structure for a connector wire end. Background Art

[0002] With the development of new energy vehicles and the application of cutting-edge high-tech technologies, the use of high-voltage connectors in vehicle systems has increased significantly. Compared to traditional connectors, the performance requirements for these connectors are also becoming increasingly higher. Due to the wide range and complexity of operating conditions, high demands are placed on the product's sealing and waterproof properties, especially the seal between the connector housing and the cable.

[0003] To achieve a waterproof seal between the connector housing and the cable, a sealing ring is typically installed on the cable with an interference fit to seal the cable and the housing. However, cable movement can cause the sealing ring to move synchronously, causing it to twist and deform, reducing its deformation and reducing its sealing effectiveness or even rendering it ineffective. This can lead to water ingress into the connector, short circuits, and charging failure, posing a serious threat to personal safety. Utility Model Content

[0004] The embodiments of the present disclosure provide a sealing structure for a connector wire end, which at least partially solves the problem that a sealing ring is twisted and deformed after movement, the deformation amount is reduced, and the sealing effect is lost.

[0005] The specific technical solutions provided by the embodiments of the present disclosure are as follows:

[0006] The present disclosure proposes a sealing structure for a connector wire end, comprising a connector housing, a sealing ring and a sealing end cover, wherein the connector housing is provided with a wire tube for accommodating cables, and the inner wall of the wire tube is provided with a limiting protrusion along its circumference; the sealing ring is sleeved on the cable and at least partially arranged in the wire tube, and one end of the sealing ring in a natural state abuts against the limiting protrusion, and the other end extends out of the wire tube; the sealing end cover is sleeved on the cable and clamped with the wire tube via a clamping portion, and the end of the sealing ring facing the sealing end cover abuts against the sealing end cover; the sealing end cover is configured to compress the sealing ring in the process of moving from an initial position to a locked position, and the sealing end cover abuts against the end face of the sealing ring and the end of the wire tube at the same time to form a seal between the connector housing and the cable.

[0007] Preferably, the sealing ring is cylindrical, and the outer wall of the sealing ring is provided with a plurality of first protrusions arranged at intervals along the circumference of the outer wall.

[0008] Preferably, the inner wall of the sealing ring is provided with a plurality of second protrusions arranged at intervals along the circumference of the inner wall.

[0009] Preferably, first guiding slopes are respectively provided at the ports of the inner walls at both ends of the sealing ring.

[0010] Preferably, the snap-fitting portion includes a protrusion and a buckle arranged in one-to-one correspondence with the protrusion, the protrusion is arranged on the side wall of the threading tube, the buckle is arranged on the sealing end cover, and the protrusion and the buckle are snap-fitted to lock the sealing end cover and the threading tube.

[0011] Preferably, the outer wall of the threading tube is provided with at least one guide ridge along its extension direction, and the sealing end cover is provided with a guide groove for sliding engagement with the guide ridge.

[0012] Preferably, a second guiding inclined surface is provided at the notch of the guide groove.

[0013] Preferably, a plurality of the threading tubes are provided at intervals, and at least one reinforcing plate is provided between two adjacent threading tubes.

[0014] Preferably, the difference between the inner diameter of the sealing ring in a natural state and the outer diameter of the cable is 0-0.4 mm.

[0015] Preferably, the length of the sealing ring extending from the wire threading tube is greater than the difference between the inner diameter of the sealing ring in a natural state and the outer diameter of the cable.

[0016] The beneficial effects of the present disclosure are as follows:

[0017] By arranging a limiting protrusion in the wire threading tube, the sealing ring is sleeved on the cable and inserted into the wire threading tube, one end of the sealing ring is abutted against the limiting protrusion, and the other end extends out of the wire threading tube and abuts against the sealing end cover. The sealing end cover compresses the sealing ring and clamps it with the wire threading tube through the clamping part, so that the sealing ring is double-sealed with the cable and the connector housing respectively, thereby solving the problem of twisting and deformation of the sealing ring after movement, reduced deformation and failure of the sealing effect in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of the sealing structure of the connector wire end disclosed in the present invention;

[0020] Figure 2 for Figure 1 Schematic diagram of the structure of the connector housing and the threading tube;

[0021] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of the middle sealing ring;

[0022] Figure 4 for Figure 1 Schematic diagram of the structure of the middle sealing end cover;

[0023] Figure 5 The figure is a schematic diagram of a partial cross-section of the sealing structure of the connector wire end disclosed in the present invention.

[0024] Reference numerals:

[0025] 1. Connector housing; 101. Wire threading tube; 102. Position limiting protrusion; 103. Bump; 104. Guide protrusion; 2. Sealing ring; 201. First protrusion; 202. Second protrusion; 203. First guide slope; 3. Sealing end cap; 301. Buckle; 302. Guide groove; 303. Second guide slope; 4. Cable; 5. Reinforcement plate. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present disclosure are described below in conjunction with the drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present disclosure and are not used to limit the present disclosure. In addition, the embodiments and features in the embodiments of the present disclosure may be combined with each other if no conflict occurs.

[0027] The present disclosure proposes a sealing structure for a connector wire end, such as Figures 1 to 5 As shown, it includes a connector housing 1, a sealing ring 2 and a sealing end cover 3. The connector housing 1 is provided with a wire tube 101 for accommodating the cable 4, and the inner wall of the wire tube 101 is provided with a limiting protrusion 102 along its circumference; the sealing ring 2 is sleeved on the cable 4 and is at least partially arranged in the wire tube 101. In the natural state, one end of the sealing ring 2 abuts against the limiting protrusion 102, and the other end extends out of the wire tube 101; the sealing end cover 3 is sleeved on the cable 4 and clamped with the wire tube 101 via a clamping portion, and the end of the sealing ring 2 facing the sealing end cover 3 abuts against the sealing end cover 3; the sealing end cover 3 is configured to compress the sealing ring 2 in the process from the initial position to the locked position, and the sealing end cover 3 abuts against the end face of the sealing ring 2 and the end of the wire tube 101 at the same time to form a seal between the connector housing 1 and the cable 4.

[0028] In this embodiment, the wire tube 101 can be a hollow cylindrical shape and horizontally arranged on the side wall of the connector housing 1, and the wire tube 101 is arranged in communication with the connector housing 1. The cable 4 passes through the sealing end cap 3 and the sealing ring 2 in sequence, and is then inserted into the wire tube 101 along the length direction of the wire tube 101 and connected to the connector housing 1; the sealing ring 2 is sleeved on the cable 4, and the end face of the sealing ring 2 located in the wire tube 101 abuts against the side of the limiting protrusion 102 facing the sealing ring 2. The other end of the sealing ring 2 extends out of the wire tube 101 and the end face of the other end abuts against the side of the sealing end cap 3 facing the sealing ring 2. During assembly, the sealing end cap 3 moves along the length direction of the wire tube 101 toward the connector housing 1, while compressing the sealing ring 2 toward the connector housing 1. Since the setting of the limiting protrusion 102 restricts the movement of the sealing ring 2 toward the inside of the connector housing 1, the part of the sealing ring 2 in the threading tube 101 is gradually compressed to produce a radial deformation, so that the inner wall of the sealing ring 2 fits tightly with the outer wall of the cable 4, and the outer wall of the sealing ring 2 fits tightly with the inner wall of the threading tube 101, thereby forming a double seal between the connector housing 1 and the cable 4, and the sealing end cover 3 is detachably connected to the threading tube 101 through the clamping part, realizing convenient assembly of parts.

[0029] Through the above technical solution, by setting a limiting protrusion 102 in the wire threading tube 101, the sealing ring 2 is sleeved on the cable 4 and inserted into the wire threading tube 101, one end of the sealing ring 2 is abutted against the limiting protrusion 102, and the other end extends out of the wire threading tube 101 and abuts against the sealing end cover 3. The sealing end cover 3 compresses the sealing ring 2 and clamps it with the wire threading tube 101 through the clamping part, so that the sealing ring 2 is double-sealed with the cable 4 and the connector housing 1 respectively, thereby solving the problem in the prior art that the sealing ring 2 is twisted and deformed after moving synchronously with the cable 4, the deformation amount is reduced, and the sealing effect fails.

[0030] In some embodiments, reference Figure 2 and Figure 3 The sealing ring 2 is cylindrical, and the outer wall of the sealing ring 2 is provided with a plurality of first protrusions 201 arranged at intervals along the circumference of the outer wall. The sealing ring 2 is made of rubber material, and the sealing ring 2 is sleeved on the cable 4 in a cylindrical shape along the length direction of the threading tube 101. This arrangement increases the contact area between the sealing ring 2 and the threading tube 101, thereby improving the sealing performance. At the same time, the arrangement of the first protrusions 201 further improves the compression volume and deformation of the sealing ring 2. During the compression process of the sealing ring 2, the first protrusions 201 deform to fill the gap and fit tightly with the inner wall of the threading tube 101, effectively improving the sealing effect between the sealing ring 2 and the threading tube 101.

[0031] In some embodiments, reference Figure 2 and Figure 3The inner wall of the sealing ring 2 is provided with a plurality of second protrusions 202 arranged at intervals along the circumference of the inner wall. During the compression process of the sealing ring 2, the second protrusions 202 deform to fill the gap and fit tightly with the outer wall of the cable 4, effectively improving the sealing effect between the sealing ring 2 and the cable 4.

[0032] In some embodiments, reference Figure 1 and Figure 3 , a first guiding bevel 203 is provided at the ports of the inner wall at both ends of the sealing ring 2. The first guiding bevel 203 is equivalent to increasing the radial dimension of the port of the sealing ring 2, which facilitates the insertion of the cable 4, and at the same time has a certain guiding effect on the insertion of the cable 4. During the assembly process of the sealing ring 2 and the cable 4, the end of the cable 4 is inserted toward the port of the sealing ring 2. When it hits the first guiding bevel 203, the cable 4 is guided by the first guiding bevel 203, making it easier to insert the cable 4 into the sealing ring 2. In addition, the first guiding bevel 203 is provided at the ports at both ends, so that during the assembly process of the sealing ring 2, there is no need to deliberately search for the end with the first guiding bevel 203 for assembly, further improving work efficiency.

[0033] In some embodiments, reference Figure 1 and Figure 4 The engaging portion includes a protrusion 103 and a buckle 301 corresponding to each protrusion 103. The protrusion 103 is provided on the side wall of the threading tube 101, and the buckle 301 is provided on the sealing end cap 3. The protrusion 103 and the buckle 301 engage to lock the sealing end cap 3 to the threading tube 101. In this embodiment, two protrusions 103 are provided axially symmetrically on the outer wall of the threading tube 101, and two buckles 301 are provided on the outer circumference of the sealing end cap 3 along the length of the threading tube 101, corresponding to the two protrusions 103. During assembly, the buckle 301 and the protrusion 103 are detachably connected, which facilitates the installation and removal of components, simplifies operation, and effectively improves work efficiency.

[0034] In some embodiments, reference Figure 1 、 Figure 2 and Figure 4 The outer wall of the threading tube 101 is provided with at least one guide ridge 104 along its extension direction, and the sealing end cap 3 is provided with a guide groove 302 for sliding engagement of the guide ridge 104. The guide ridge 104 serves a guiding function. During the engagement between the sealing end cap 3 and the threading tube 101, the guide ridge 104 is inserted into the guide groove 302, allowing the buckle 301 of the sealing end cap 3 to be engaged with the bump 103 without having to be deliberately adjusted. This allows for simple and convenient operation and improves component assembly efficiency. Furthermore, the guide ridge 104 also serves a certain limiting function, preventing the sealing end cap 3 from rotating under continuous vibration, thereby improving the reliability of the device.

[0035] In some embodiments, reference Figure 1 and Figure 4 A second guiding bevel 303 is provided at the notch of the guide groove 302. The second guiding bevel 303 increases the radial dimension of the notch of the guide groove 302, facilitating the insertion of the guide protrusion 104 while also providing a certain guidance for the insertion of the guide protrusion 104. During the assembly process of the sealing end cap 3 and the threading tube 101, the end of the guide protrusion 104 is inserted toward the notch. When the guide protrusion 104 abuts against the second guiding bevel 303, the second guiding bevel 303 guides the guide protrusion 104, facilitating its insertion into the guide groove 302, thereby effectively improving work efficiency.

[0036] In some embodiments, as Figure 1 As shown, multiple threading tubes 101 are spaced apart, and at least one reinforcing plate 5 is provided between two adjacent threading tubes 101. The reinforcing plate 5 is provided between two adjacent threading tubes 101 along the length of the threading tubes 101 and connects the two adjacent threading tubes 101 into one body. In this way, the reinforcing plate 5 increases the overall strength of the threading tubes 101. The connection of the reinforcing plate 5 makes the threading tubes 101 more integrated, improves their own impact resistance, and further improves the reliability of the device.

[0037] In some embodiments, the difference between the inner diameter of the sealing ring 2 in its natural state and the outer diameter of the cable 4 is 0 to 0.4 mm. In order for the sealing ring 2 to be smoothly sleeved on the cable 4, silicone oil needs to be applied to the cable 4 to reduce friction and wear. In this embodiment, the difference between the inner diameter of the sealing ring 2 in its natural state and the outer diameter of the cable 4 can be 0.2 mm, that is, a certain gap is left between the inner wall of the sealing ring 2 and the outer wall of the cable 4. This can avoid excessive friction between the sealing ring 2 and the cable 4 during the pre-piercing stage, resulting in loss of silicone oil, thereby improving the reliability of the device and indirectly improving economic benefits.

[0038] In some embodiments, the length of the sealing ring 2 extending from the threading tube 101 is greater than the difference between the inner diameter of the sealing ring 2 in its natural state and the outer diameter of the cable 4. This configuration allows the sealing ring 2 to have sufficient compression, effectively improving the sealing effect of the sealing ring 2 and achieving airtightness requirements.

[0039] Although the preferred embodiments of the present disclosure have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present disclosure.

[0040] Obviously, those skilled in the art may make various changes and modifications to the embodiments of the present disclosure without departing from the spirit and scope of the embodiments of the present disclosure. Thus, if such changes and modifications of the embodiments of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include such changes and modifications.

Claims

1. A sealing structure for a connector wire end, comprising a connector housing (1), a sealing ring (2) and a sealing end cover (3), characterized in that: The connector housing (1) is provided with a threading tube (101) for accommodating a cable (4), and the inner wall of the threading tube (101) is provided with a limiting protrusion (102) along its circumference; the sealing ring (2) is sleeved on the cable (4) and at least partially arranged in the threading tube (101), and one end of the sealing ring (2) in a natural state abuts against the limiting protrusion (102), and the other end protrudes out of the threading tube (101); the sealing end cover (3) is sleeved on the cable (4) and the sealing end cover (3) is sleeved on the cable (4). The sealing ring (2) is mounted on the cable (4) and is clamped with the threading tube (101) via a clamping portion, and one end of the sealing ring (2) facing the sealing end cover (3) abuts against the sealing end cover (3); the sealing end cover (3) is configured to compress the sealing ring (2) in the process of moving from an initial position to a locked position, and the sealing end cover (3) abuts against the end faces of the sealing ring (2) and the end of the threading tube (101) at the same time, so as to form a seal between the connector housing (1) and the cable (4).

2. The sealing structure of the connector wire end according to claim 1, characterized in that: The sealing ring (2) is cylindrical, and the outer wall of the sealing ring (2) is provided with a plurality of first protrusions (201) arranged along the circumference of the outer wall and at intervals.

3. The sealing structure of the connector wire end according to claim 1, characterized in that: The inner wall of the sealing ring (2) is provided with a plurality of second protrusions (202) arranged at intervals along the circumference of the inner wall.

4. The sealing structure of the connector wire end according to claim 1, characterized in that: First guiding inclined surfaces (203) are respectively provided at the ports of the inner walls at both ends of the sealing ring (2).

5. The sealing structure of the connector wire end according to claim 1, characterized in that: The clamping portion comprises a protrusion (103) and a buckle (301) arranged in a one-to-one correspondence with the protrusion (103); the protrusion (103) is arranged on the side wall of the threading tube (101); the buckle (301) is arranged on the sealing end cover (3); the protrusion (103) and the buckle (301) are clamped together to lock the sealing end cover (3) and the threading tube (101).

6. The sealing structure of the connector wire end according to claim 1, characterized in that: The outer wall of the threading tube (101) is provided with at least one guide convex strip (104) along its extension direction, and the sealing end cover (3) is provided with a guide groove (302) for slidingly matching the guide convex strip (104).

7. The sealing structure of the connector wire end according to claim 6, characterized in that: A second guiding inclined surface (303) is provided at the notch of the guiding groove (302).

8. The sealing structure of the connector wire end according to claim 1, characterized in that: A plurality of the threading tubes (101) are arranged at intervals, and at least one reinforcing plate (5) is arranged between two adjacent threading tubes (101).

9. The sealing structure of the connector wire end according to claim 1, characterized in that: The difference between the inner diameter of the sealing ring (2) in a natural state and the outer diameter of the cable (4) is 0 to 0.4 mm.

10. The sealing structure of the connector wire end according to claim 1, characterized in that: The length of the sealing ring (2) extending out of the wire threading tube (101) is greater than the difference between the inner diameter of the sealing ring (2) in a natural state and the outer diameter of the cable (4).

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