Seal and connector

Abstract

The utility model discloses a sealing element and a connector. The sealing member includes: an elastic body formed with a through hole allowing a rectangular terminal with a cable to pass therethrough; and the inner sealing ribs are formed in the through holes and are used for being in interference fit with the cables so as to realize sealing between the inner sealing ribs and the cables. The inner contour line of the inner sealing rib is elliptical, and the long axis and the short axis of the elliptical inner contour line can respectively correspond to the long edge and the short edge of the rectangular cross section of the terminal so as to prevent the inner sealing rib from being damaged when the terminal passes through the through hole. According to the utility model, not only can the sealing element be prevented from being damaged when the terminal passes through the through hole of the sealing element, but also enough interference between the sealing element and the cable can be ensured, and the sealing performance and the sealing reliability of the sealing element are greatly improved.

Description

Technical Field

[0001] The utility model relates to a sealing component and a connector comprising the sealing component. Background Art

[0002] In the prior art, the cable hole on the seal is usually designed as a circular hole, and the raw material is silicone with a lower hardness, such as a Shore A hardness of about 20 degrees. However, in the new oil-resistant application environment, the raw material of the seal needs to be replaced with an oil-resistant material. However, the performance disadvantages of these materials are also obvious, such as high material hardness and poor toughness. This may cause the force required to insert the terminal and cable into the cable hole to be too great. In addition, when the terminal with a rectangular cross-section is inserted into the cable hole, the long side of the terminal is likely to scratch the edge of the cable hole, resulting in poor sealing. In order to solve these problems, in the prior art, the inner diameter of the cable hole is usually directly increased, which will cause the interference between the cable hole and the cable (that is, the amount of interference fit) to be too small, and the contact pressure will become smaller, resulting in a significant reduction in the sealing ability, thereby greatly reducing the sealing performance and sealing reliability. Utility Model Content

[0003] The purpose of the present invention is to solve at least one aspect of the above-mentioned problems and defects in the prior art.

[0004] According to one aspect of the utility model, a sealing member is provided. The sealing member comprises: an elastic body, formed with a through hole allowing a rectangular terminal with a cable to pass through; and at least one circle of inner sealing ribs, formed in the through hole, for interference fit with the cable to achieve sealing between the two. The inner contour of the inner sealing rib is elliptical, and the major axis and minor axis of the elliptical inner contour can correspond to the long side and the short side of the rectangular cross section of the terminal, respectively, to prevent the inner sealing rib from being damaged when the terminal passes through the through hole.

[0005] According to an exemplary embodiment of the present utility model, the major axis dimension of the elliptical inner contour line of the inner sealing rib is smaller than the diameter of the cable by a first value to ensure that the inner sealing rib can have an interference fit with the cable.

[0006] According to another exemplary embodiment of the present utility model, the major axis dimension of the elliptical inner contour line of the inner sealing rib is smaller than the long side dimension of the rectangular cross-section of the terminal by a second value, and the second value is smaller than the first value.

[0007] According to another exemplary embodiment of the present utility model, the minor axis dimension of the elliptical inner contour line of the inner sealing rib is equal to, slightly smaller than, or slightly larger than the minor side dimension of the rectangular cross section of the terminal.

[0008] According to another exemplary embodiment of the utility model, a plurality of circles of inner sealing ribs are formed in the through hole of the elastomer, and the plurality of circles of inner sealing ribs are spaced apart in the axial direction of the through hole. The plurality of circles of inner sealing ribs are used for interference fit with the cable at the same time to improve sealing performance and sealing reliability.

[0009] According to another exemplary embodiment of the present utility model, the through hole includes an inlet portion, an outlet portion and a middle portion located between the inlet portion and the outlet portion, and the inner sealing rib is formed on an inner circumferential surface of the middle portion of the through hole.

[0010] According to another exemplary embodiment of the present utility model, the entrance portion of the through hole is in a trumpet shape that opens outwards to guide the terminal and the cable to be inserted into the through hole.

[0011] According to another exemplary embodiment of the utility model, the inlet and outlet of the through hole are identical and both are trumpet-shaped and open outward, so that the front and back sides of the seal do not need to be distinguished when in use.

[0012] According to another exemplary embodiment of the present invention, a plurality of through holes are formed on the elastic body of the sealing member to allow a plurality of cables to pass through respectively.

[0013] According to another exemplary embodiment of the utility model, the elastomer of the seal is in the form of a rectangular parallelepiped, the length and width directions of the elastomer are respectively parallel to the short axis and long axis of the elliptical inner contour line of the inner sealing rib, and the thickness direction of the elastomer is parallel to the axial direction of the through hole.

[0014] According to another exemplary embodiment of the present invention, the plurality of through holes are arranged in a plurality of rows and columns in the length direction and the width direction of the elastic body.

[0015] According to another exemplary embodiment of the utility model, the seal also includes: at least one circle of outer sealing ribs formed on the outer circumferential surface of the elastomer, which is used for interference fit with the inner circumferential surface of the rear port of the insulating shell of the connector to achieve sealing therebetween.

[0016] According to another exemplary embodiment of the utility model, a plurality of circles of outer sealing ribs are formed on the outer circumferential surface of the elastomer, and the plurality of circles of outer sealing ribs are spaced apart in the thickness direction of the elastomer for simultaneous interference fit with the inner circumferential surface of the rear port of the insulating shell.

[0017] According to another exemplary embodiment of the present invention, the sealing component is an integral injection-molded component.

[0018] According to another aspect of the utility model, a connector is provided. The connector comprises: an insulating shell having a rear port; the aforementioned seal, which is inserted into the rear port of the insulating shell; and a cable assembly, which comprises a cable and a terminal fixed on the end of the cable. The terminal and the cable pass through the through hole on the seal to fit the seal onto the cable; the inner sealing rib of the seal is interference fit with the outer circumference of the cable to achieve sealing between the seal and the cable; the outer sealing rib of the seal is interference fit with the inner circumference of the rear port of the insulating shell to achieve sealing between the seal and the insulating shell.

[0019] According to an exemplary embodiment of the present utility model, the connector includes a plurality of cable assemblies, and the plurality of cable assemblies respectively pass through a plurality of through holes on the sealing member.

[0020] In the above exemplary embodiments of the utility model, the inner contour of the inner sealing rib in the through hole of the seal is elliptical and its major axis and minor axis correspond to the long side and short side of the terminal with a rectangular cross section, respectively. This can not only prevent the seal from being damaged when the terminal passes through the through hole of the seal, but also ensure that there is enough interference between the seal and the cable, greatly improving the sealing performance and sealing reliability of the seal.

[0021] Other objects and advantages of the present invention will become apparent from the following description of the present invention with reference to the accompanying drawings, which will help to provide a comprehensive understanding of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional schematic diagram showing a connector according to an exemplary embodiment of the utility model;

[0023] Figure 2 An exploded schematic diagram showing a connector according to an exemplary embodiment of the present utility model;

[0024] Figure 3 An exploded schematic diagram showing a seal and a cable assembly according to an exemplary embodiment of the present utility model;

[0025] Figure 4 A perspective schematic diagram showing a sealing member and a terminal inserted into a through hole of the sealing member according to an exemplary embodiment of the utility model;

[0026] Figure 5 A cross-sectional view showing a seal according to an exemplary embodiment of the present invention;

[0027] Figure 6 A schematic plan view showing a seal according to an exemplary embodiment of the present utility model;

[0028] Figure 7 A cross-sectional view showing a seal according to an exemplary embodiment of the present invention in the length direction;

[0029] Figure 8 A cross-sectional view in the width direction of a seal according to an exemplary embodiment of the present utility model is shown;

[0030] Fig. 9 A transverse cross-sectional view of a terminal according to an exemplary embodiment of the present invention is shown. DETAILED DESCRIPTION

[0031] The technical solution of the utility model is further specifically described below through examples and in combination with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar components. The following description of the implementation mode of the utility model with reference to the accompanying drawings is intended to explain the overall utility model concept of the utility model, and should not be understood as a limitation of the utility model.

[0032] In addition, in the detailed description below, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. However, it is apparent that one or more embodiments may be implemented without these specific details. In other cases, known structures and devices are embodied in a schematic manner to simplify the accompanying drawings.

[0033] According to an overall technical concept of the utility model, a sealing member is provided. The sealing member comprises: an elastic body, formed with a through hole allowing a rectangular terminal with a cable to pass through; and at least one circle of inner sealing ribs, formed in the through hole, for interference fit with the cable to achieve a seal between the two. The inner contour of the inner sealing rib is elliptical, and the major axis and minor axis of the elliptical inner contour can correspond to the long side and the short side of the rectangular cross section of the terminal, respectively, to prevent the inner sealing rib from being damaged when the terminal passes through the through hole.

[0034] According to another general technical concept of the utility model, a connector is provided. The connector includes: an insulating shell having a rear port; the aforementioned seal, which is inserted into the rear port of the insulating shell; and a cable assembly, including a cable and a terminal fixed on the end of the cable. The terminal and the cable pass through the through hole on the seal to fit the seal onto the cable; the inner sealing rib of the seal is interference fit with the outer circumference of the cable to achieve sealing between the seal and the cable; the outer sealing rib of the seal is interference fit with the inner circumference of the rear port of the insulating shell to achieve sealing between the seal and the insulating shell.

[0035] Figure 1A three-dimensional schematic diagram showing a connector according to an exemplary embodiment of the utility model; Figure 2 An exploded schematic diagram showing a connector according to an exemplary embodiment of the present utility model; Figure 3 An exploded schematic diagram showing a seal 1 and a cable assembly 2 according to an exemplary embodiment of the present utility model; Figure 4 A perspective schematic diagram showing a sealing member 1 and a terminal 22 inserted into a through hole 11 of the sealing member 1 according to an exemplary embodiment of the present utility model; Figure 5 A cross-sectional view showing a seal 1 according to an exemplary embodiment of the present invention; Figure 6 A schematic plan view showing a seal 1 according to an exemplary embodiment of the present utility model; Figure 7 A cross-sectional view showing a seal 1 in the length direction according to an exemplary embodiment of the present utility model; Figure 8 A cross-sectional view in the width direction of a seal 1 according to an exemplary embodiment of the present utility model is shown; Fig. 9 A transverse cross-sectional view of a terminal 22 according to an exemplary embodiment of the present invention is shown.

[0036] like Figures 1 to 9 As shown, in an exemplary embodiment of the utility model, a seal 1 is disclosed. The seal 1 includes: an elastic body 10 and at least one circle of inner sealing ribs 12. The elastic body 10 is formed with a through hole 11 that allows a rectangular terminal 22 with a cable 21 to pass through. At least one circle of inner sealing ribs 12 is formed in the through hole 11, which is used for interference fit with the cable 21 to achieve sealing between the two.

[0037] like Figures 1 to 9 As shown, in the illustrated embodiment, the inner contour line 12a of the inner sealing rib 12 is elliptical, and the major axis A1 and the minor axis A2 of the elliptical inner contour line 12a respectively correspond to the long side L and the short side W of the rectangular cross-section of the terminal 22 fixed on the end of the cable 21, so as to prevent the inner sealing rib 12 from being damaged when the terminal 22 passes through the through hole 11.

[0038] like Figures 1 to 9 As shown, in the illustrated embodiment, the major axis A1 of the elliptical inner contour line 12a of the inner sealing rib 12 is smaller than the diameter of the cable 21 by a first value to ensure that the inner sealing rib 12 can be interference fit with the cable 21.

[0039] like Figures 1 to 9 As shown, in the illustrated embodiment, the major axis A1 of the elliptical inner contour line 12a of the inner sealing rib 12 is smaller than the long side L of the rectangular cross section of the terminal 22 by a second value, and the second value is smaller than the first value.

[0040] like Figures 1 to 9As shown, in the illustrated embodiment, the minor axis A2 of the elliptical inner contour line 12 a of the inner sealing rib 12 is equal to, slightly smaller than, or slightly larger than the minor side W of the rectangular cross section of the terminal 22 .

[0041] like Figures 1 to 9 As shown, in the illustrated embodiment, a plurality of circles of inner sealing ribs 12 are formed in the through hole 11 of the elastomer 10, and the plurality of circles of inner sealing ribs 12 are spaced apart in the axial direction of the through hole 11, and the plurality of circles of inner sealing ribs 12 are used for interference fit with the cable 21 at the same time to improve the sealing performance and sealing reliability.

[0042] like Figures 1 to 9 As shown, in the illustrated embodiment, the through hole 11 includes an inlet portion, an outlet portion and a middle portion between the inlet portion and the outlet portion, and the inner sealing rib 12 is formed on the inner circumferential surface of the middle portion of the through hole 11 .

[0043] like Figures 1 to 9 As shown, in the illustrated embodiment, the entrance portion of the through hole 11 is in a trumpet shape that opens outwards to guide the terminal 22 and the cable 21 to be inserted into the through hole 11 .

[0044] like Figures 1 to 9 As shown, in the illustrated embodiment, the inlet and outlet of the through hole 11 are identical and both are trumpet-shaped and open outward, so that the front and back sides of the sealing member 1 do not need to be distinguished when in use.

[0045] like Figures 1 to 9 As shown, in the illustrated embodiment, a plurality of through holes 11 are formed on the elastic body 10 of the sealing member 1 to allow a plurality of cables 21 to pass through respectively.

[0046] like Figures 1 to 9 As shown, in the illustrated embodiment, the elastomer 10 of the seal 1 is in the form of a rectangular parallelepiped, the length direction and the width direction of the elastomer 10 are respectively parallel to the short axis A2 and the long axis A1 of the elliptical inner contour line 12a of the inner sealing rib 12, and the thickness direction of the elastomer 10 is parallel to the axial direction of the through hole 11.

[0047] like Figures 1 to 9 As shown, in the illustrated embodiment, the plurality of through holes 11 are arranged in a plurality of rows and columns in the length direction and the width direction of the elastic body 10 .

[0048] like Figures 1 to 9 As shown, in the illustrated embodiment, the seal 1 also includes at least one circle of outer sealing ribs 13, which are formed on the outer circumferential surface of the elastomer 10 and are used for interference fit with the inner circumferential surface of the rear port 30 of the insulating shell 3 of the connector to achieve sealing therebetween.

[0049] like Figures 1 to 9As shown, in the illustrated embodiment, multiple circles of external sealing ribs 13 are formed on the outer circumferential surface of the elastomer 10, and the multiple circles of external sealing ribs 13 are spaced apart in the thickness direction of the elastomer 10 for simultaneous interference fit with the inner circumferential surface of the rear port 30 of the insulating shell 3.

[0050] like Figures 1 to 9 As shown, in the illustrated embodiment, the seal 1 is an integral injection-molded part.

[0051] like Figures 1 to 9 As shown, in another exemplary embodiment of the utility model, a connector is also disclosed. The connector includes: an insulating shell 3, a seal 1 and a cable assembly 2. The insulating shell 3 has a rear port 30. The seal 1 is inserted into the rear port 30 of the insulating shell 3. The cable assembly 2 includes a cable 21 and a terminal 22 fixed on the end of the cable 21. For example, the terminal 22 can be crimped onto the end of the cable 21. The terminal 22 and the cable 21 pass through the through hole 11 on the seal 1 to fit the seal 1 onto the cable 21. The inner sealing rib 12 of the seal 1 is interference fit with the outer circumference of the cable 21 to achieve sealing between the seal 1 and the cable 21. The outer sealing rib 13 of the seal 1 is interference fit with the inner circumference of the rear port 30 of the insulating shell 3 to achieve sealing between the seal 1 and the insulating shell 3.

[0052] like Figures 1 to 9 As shown, in the illustrated embodiment, the connector includes a plurality of cable assemblies 2 , and the plurality of cable assemblies 2 pass through a plurality of through holes 11 on the sealing member 1 respectively.

[0053] Those skilled in the art will appreciate that the embodiments described above are exemplary and can be improved upon by those skilled in the art. The structures described in the various embodiments can be freely combined without causing any conflicts in structure or principle, and these changes should fall within the scope of protection of the present utility model.

[0054] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the accompanying drawings are intended to exemplify the preferred implementation modes of the present invention and should not be construed as limiting the present invention.

[0055] Although some embodiments of the general inventive concept have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined by the claims and their equivalents.

[0056] It should be noted that the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. In addition, any element number of the claims should not be construed as limiting the scope of the present invention.

Claims

1. A sealing member, characterized in that: include: An elastic body (10) is formed with a through hole (11) for allowing a rectangular terminal (22) with a cable (21) to pass through; and At least one circle of inner sealing ribs (12) is formed in the through hole (11) and is used for interference fit with the cable (21) to achieve sealing between the two. The inner contour line (12a) of the inner sealing rib (12) is elliptical, and the major axis (A1) and the minor axis (A2) of the elliptical inner contour line (12a) can correspond to the long side (L) and the short side (W) of the rectangular cross section of the terminal (22), respectively, so as to prevent the inner sealing rib (12) from being damaged when the terminal (22) passes through the through hole (11).

2. The seal according to claim 1, characterized in that: The major axis (A1) of the elliptical inner contour line (12a) of the inner sealing rib (12) is smaller than the diameter of the cable (21) by a first value, so as to ensure that the inner sealing rib (12) can be interference-fitted with the cable (21).

3. The seal according to claim 2, characterized in that: The major axis (A1) dimension of the elliptical inner contour line (12a) of the inner sealing rib (12) is smaller than the long side (L) dimension of the rectangular cross section of the terminal (22) by a second value, and the second value is smaller than the first value.

4. The seal according to claim 1, characterized in that: The size of the short axis (A2) of the elliptical inner contour line (12a) of the inner sealing rib (12) is equal to, slightly smaller than, or slightly larger than the size of the short side (W) of the rectangular cross section of the terminal (22).

5. The seal according to claim 1, characterized in that: A plurality of circles of inner sealing ribs (12) are formed in the through hole (11) of the elastic body (10), and the plurality of circles of inner sealing ribs (12) are spaced apart in the axial direction of the through hole (11). The plurality of circles of inner sealing ribs (12) are used to simultaneously perform interference fit with the cable (21) to improve sealing performance and sealing reliability.

6. The seal according to claim 1, characterized in that: The through hole (11) comprises an inlet portion, an outlet portion and a middle portion located between the inlet portion and the outlet portion, and the inner sealing rib (12) is formed on the inner circumferential surface of the middle portion of the through hole (11).

7. The seal according to claim 6, characterized in that: The entrance portion of the through hole (11) is in the shape of a trumpet that opens outwards, so as to guide the terminal (22) and the cable (21) to be inserted into the through hole (11).

8. The seal according to claim 7, characterized in that: The inlet and outlet of the through hole (11) are identical and both are in a trumpet shape that opens outwards, so that the front and back sides of the sealing element (1) do not need to be distinguished when in use.

9. The sealing member according to any one of claims 1 to 8, characterized in that: A plurality of through holes (11) are formed on the elastic body (10) of the sealing member (1) to allow a plurality of cables (21) to pass through respectively.

10. The seal according to claim 9, characterized in that: The elastic body (10) of the sealing member (1) is in the form of a rectangular parallelepiped, the length direction and width direction of the elastic body (10) are respectively parallel to the short axis (A2) and the long axis (A1) of the elliptical inner contour line (12a) of the inner sealing rib (12), and the thickness direction of the elastic body (10) is parallel to the axial direction of the through hole (11).

11. The seal according to claim 10, characterized in that: The plurality of through holes (11) are arranged in a plurality of rows and columns in the length direction and the width direction of the elastic body (10).

12. The seal according to claim 10, characterized in that Also includes: At least one circle of outer sealing ribs (13) is formed on the outer peripheral surface of the elastic body (10) and is used for interference fit with the inner peripheral surface of the rear port (30) of the insulating shell (3) of the connector to achieve sealing between the two.

13. The seal according to claim 12, characterized in that: A plurality of circles of external sealing ribs (13) are formed on the outer peripheral surface of the elastomer (10), and the plurality of circles of external sealing ribs (13) are spaced apart in the thickness direction of the elastomer (10) and are used for simultaneously interference fitting with the inner peripheral surface of the rear port (30) of the insulating shell (3).

14. The seal according to claim 1, characterized in that: The sealing component (1) is an integral injection-molded component.

15. A connector, characterized in that: include: An insulating shell (3) having a rear port (30); The sealing member (1) according to any one of claims 1 to 14, inserted into the rear port (30) of the insulating shell (3); and A cable assembly (2) comprises a cable (21) and a terminal (22) fixed to an end of the cable (21). The terminal (22) and the cable (21) pass through the through hole (11) on the sealing member (1) so that the sealing member (1) is fitted onto the cable (21). The inner sealing rib (12) of the sealing member (1) is interference-fitted with the outer peripheral surface of the cable (21) to achieve sealing between the sealing member (1) and the cable (21). The outer sealing rib (13) of the sealing member (1) is interference-fitted with the inner circumference of the rear port (30) of the insulating shell (3) to achieve sealing between the sealing member (1) and the insulating shell (3).

16. The connector according to claim 15, characterized in that: The connector comprises a plurality of cable assemblies (2), and the plurality of cable assemblies (2) respectively pass through a plurality of through holes (11) on the sealing member (1).

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