Electrical connector

Abstract

The utility model belongs to the field of electric connector, especially involves a kind of electric connector with small insertion resistance and good sealing effect, the utility model has carried out improvement to electric connector, the structure of sealing ring in specific end surface insertion slot bottom has been improved, and has set up step surface and guide surface on sealing ring, has reduced the insertion force required by connector insertion, and can better drive sealing ring to deform in the direction perpendicular to insertion, sealing ring is deformed and forms sealing with the side wall and bottom wall of insertion slot, guarantees the sealing effect after the insertion of male connector and female connector.

Description

Technical Field

[0001] This utility model belongs to the field of electrical connectors, and specifically relates to an electrical connector with low insertion resistance and good sealing effect. Background Technology

[0002] In the existing technology, there are two common sealing structures for male and female connectors.

[0003] The first type has a sealing ring at the bottom of the insertion point on the housing. When the connector housing is inserted, the end of one of the housings directly acts on the end face of the sealing ring, causing the sealing ring to expand under pressure and form a seal. However, in this structure, the entire end face of the sealing ring is under pressure, and the sealing ring as a whole deforms in the insertion direction. Therefore, the insertion force required for the insertion end is relatively large, and the rebound force after the sealing ring is deformed under pressure is relatively large. Since the connector generally only has one locking buckle, there is a possibility of seal failure if the sealing ring on one side is not pressurized enough.

[0004] The second method involves creating a groove on the surface of one of the connectors and placing a sealing ring inside the groove. After the connectors are inserted, the sealing ring between the two housings is sealed by deformation of the sealing ring in the groove height direction. However, in this structure, the sealing ring is subjected to frictional force along the insertion direction during the insertion process of the housings, and the sealing ring is prone to overturning and deformation, so the sealing effect cannot be guaranteed. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention improves the installation method and structure of the sealing ring in the connector, thereby reducing the insertion force when the male and female connectors are mated, while also ensuring a good seal between them.

[0006] The technical solution of this utility model is as follows:

[0007] An electrical connector includes a male connector and a female connector. The female connector has an end face slot, and the male connector has an insertion part that inserts into the end face slot. It also includes a sealing ring installed at the bottom of the end face slot. The sealing ring includes a sealing ring body, and a guide surface is provided between the inner wall of the sealing ring body and its end face. The inner diameter of the guide surface gradually increases from the inner wall to the end face. During the insertion process of the male connector and the female connector, the insertion part of the male connector first acts on the guide surface of the sealing ring and slides towards the other end of the sealing ring, ultimately completing the compression deformation of the sealing ring to achieve a seal between the male connector and the female connector.

[0008] The inner wall of the sealing ring body is provided with a stepped surface, and one end of the guide surface is connected to the outer end of the stepped surface. When the male connector and the female connector are inserted, the insertion part of the male connector first acts on the guide surface of the sealing ring and finally slides onto the stepped surface to complete the compression deformation of the sealing ring and achieve the seal between the male connector and the female connector.

[0009] Furthermore, the bottom surface of the end face slot is provided with an installation groove, and the bottom of the sealing ring body is provided with an anti-tipping rib embedded in the installation groove. The anti-tipping rib enhances the structural stability of the sealing ring body and makes it less likely to flip over.

[0010] Furthermore, the interference fit between the anti-rollover rib and the mounting groove increases the reliability of the connection between the anti-rollover rib and the female connector, making it less likely to be pulled out of the end face slot by the insertion and removal action of the male connector.

[0011] Furthermore, the upper or lower wall of the mounting groove is provided with a locking groove, and the upper or lower surface of the anti-rollover rib is provided with a locking protrusion that cooperates with the locking groove. Through the cooperation between the locking protrusion on the anti-rollover rib and the locking groove in the mounting groove, a locking is provided along the connector insertion direction.

[0012] Furthermore, the end face slot has a connecting groove on the wall near the bottom, and the outer surface of the sealing ring has a connecting protrusion that mates with the connecting groove.

[0013] Furthermore, the surface of the female connector is provided with a support component, the support component is connected to a pressing spring plate via a shaft, the front end of the pressing spring plate is provided with a hook, and the tail end of the pressing spring plate is provided with an elastic component between it and the female connector. The surface of the male connector is provided with a beveled boss that engages with the hook.

[0014] Furthermore, the support assembly includes symmetrically arranged support plates, with a pressing spring plate located between the two support plates. The front end of the support plate is provided with a bearing platform, and the front of both sides of the pressing spring plate is provided with recessed widening plates. When the elastic component is not subjected to external pressure, the lower surface of the tail of the widening plate abuts against the bearing platform of the support plate.

[0015] Furthermore, the engagement friction surface of the hook and the inclined boss is provided with an angle, and the surface of the inclined boss and the hook is provided with a hollow area, the width of which is greater than the width of the hook.

[0016] Furthermore, a protective barrier is provided on the female connector at the tail of the pressing spring plate, and the protective barrier is integrally formed with the support component.

[0017] In summary, this utility model has the following beneficial effects:

[0018] 1. This utility model improves the electrical connector, specifically by improving the structure of the sealing ring at the bottom of the end face slot. A stepped surface and a guide surface are provided on the sealing ring, which reduces the insertion force required for connector insertion and can better drive the deformation of the sealing ring perpendicular to the insertion direction. After deformation, the sealing ring forms a seal with the side wall and bottom wall of the insertion slot, ensuring the sealing effect after the male and female connectors are inserted.

[0019] 2. This utility model further improves the structure of the pressing spring plate of the electrical connector. This utility model designs a pressing spring plate with a pin connection, which can be unlocked multiple times. Compared with the cantilever spring plate, it is less prone to fatigue and has a better service life. Furthermore, through the design of the angle of the hook and the hollow area of ​​the inclined boss, when a large pulling force is received, the hook will not cross the inclined boss and fail to lock, thus ensuring the reliability of the locking of the male and female connectors. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0021] Figure 2 This is a three-dimensional schematic diagram of the sealing ring of this utility model;

[0022] Figure 3 This is a cross-sectional schematic diagram of the sealing ring and the end face slot of this utility model.

[0023] Figure 4 This is a cross-sectional schematic diagram of the sealing ring of this utility model and its end face slot (with anti-rollover ribs).

[0024] Figure 5 This is a cross-sectional schematic diagram of the sealing ring and the end face slot (with anti-rollover ribs and locking protrusions) of this utility model.

[0025] Figure 6 This is a cross-sectional schematic diagram of the sealing ring and the end face slot (with connecting protrusion) of this utility model.

[0026] Figure 7 This is a half-sectional schematic diagram of the present invention;

[0027] Figure 8 This is a three-dimensional schematic diagram from another perspective of the present invention;

[0028] Figure 9 This is a cross-sectional schematic diagram of Embodiment 2 of the present invention;

[0029] In the diagram, 1 is the male connector.

[0030] 2 is the female connector, 20 is the end face slot, 201 is the mounting slot, 202 is the locking slot, 21 is the connecting groove, 3 is the sealing ring, 30 is the sealing ring body, 301 is the stepped surface, 302 is the guide surface, 303 is the anti-tipping rib, 304 is the locking protrusion, and 31 is the connecting protrusion.

[0031] 21 is the support plate, 22 is the pressing spring plate, 23 is the hook, 24 is the elastic component, 11 is the inclined boss, 210 is the bearing platform, 220 is the widening plate, 110 is the hollow area, 25 is the protective enclosure, 3000 is the inner wall, and 3001 is the end face. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0033] It should be noted that when a component is referred to as being "set on" or "fixed to" another component, it can be directly on the other component or there may be an intermediate component. When a component is referred to as being "fixed to" another component, or "fixedly connected" to another component, the fixing method can be detachable or non-detachable. When a component is considered to be "connected" or "rotatably connected" to another component, it can be directly connected to the other component or there may be an intermediate component. The terms "vertical," "horizontal," "left," "right," "upper," "lower," and similar expressions used are for illustrative purposes only and do not represent the only possible implementation.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] In this invention, terms such as "first," "second," and "third" are used not to represent specific quantities or orders, but merely to distinguish names.

[0036] Example 1

[0037] See Figures 1 to 3As shown, an electrical connector includes a male connector 1 and a female connector 2. The female connector 2 has an end face slot 20, and the male connector 1 has an insertion part 10 for inserting into the end face slot. It also includes a sealing ring 3, which is installed at the bottom of the end face slot 20. The sealing ring 3 includes a sealing ring body 30, and a stepped surface 301 is formed on the inner wall 3000 of the sealing ring body 30. A guide surface 302 is provided between the outer end of the stepped surface and the end face 3001 of the sealing ring body. The inner diameter of the guide surface 302 gradually increases from the inner wall to the end face. When the male connector and the female connector are inserted, the insertion part of the male connector first acts on the guide surface of the sealing ring and finally slides onto the stepped surface to complete the compression deformation of the sealing ring and achieve the seal between the male connector and the female connector.

[0038] This invention improves the electrical connector, specifically the structure of the sealing ring at the bottom of the end face slot. A stepped surface and a guide surface are added to the sealing ring. Due to the presence of the guide surface, initially, there is no contact between the insertion part of the male connector and the sealing ring during the initial insertion of the male connector and the female connector, resulting in no resistance during insertion. As the insertion part moves forward and the inner diameter of the guide surface gradually increases from the inner wall towards the end face, the insertion part contacts the guide surface. The insertion part then compresses the guide part of the sealing ring, deforming it towards the outer periphery of the end face slot. Ultimately, the end of the insertion part abuts against the stepped surface, pushing the sealing ring to deform along and perpendicular to the insertion direction. The insertion direction is as follows: Figure 3 As shown, it can be seen that in the initial stage of insertion, the presence of the guide surface reduces the insertion force required for connector insertion and better drives the deformation of the sealing ring in the direction perpendicular to the insertion. After deformation, the sealing ring forms a seal with the side wall and bottom wall of the insertion groove, ensuring the sealing effect after the male and female connectors are inserted.

[0039] Further, see Figure 4 As shown, the bottom surface of the end face slot 20 is also provided with an installation groove 201, and the bottom of the sealing ring body 30 is provided with an anti-tipping rib 303 embedded in the installation groove. The anti-tipping rib enhances the rigidity of the tail of the sealing ring body, so that the sealing ring body has better structural stability and is not easy to flip over.

[0040] In actual use, the sealing ring flips mainly because the sealing ring and the insertion part of the male connector become partially stuck. During the removal of the male connector, there is no reliable connection between the sealing ring and the female connector. The partial adhesion causes the sealing ring to be subjected to localized force, causing it to flip as it is pulled out along with the male connector. Therefore, we can prevent the sealing ring from being pulled out along with the male connector by increasing the connection strength between the sealing ring and the female connector housing.

[0041] We can improve the anti-tipping capability by increasing the connection reliability between the anti-tipping rib and the female end shell. In one way, the anti-tipping rib 303 is interference-fitted with the mounting groove 201. Through the interference fit between the anti-tipping rib and the mounting groove, the static friction between the anti-tipping rib and the female end connector is increased, so that it is not easy to be pulled out of the end face slot by the insertion and removal action of the male end connector.

[0042] Another method is to improve rollover resistance by using locking protrusions and locking grooves. See [link / reference] Figure 5 As shown, the upper or lower wall of the mounting groove 201 is provided with a locking groove 202, and the upper or lower surface of the anti-tipping rib 303 is provided with a locking protrusion 304 that cooperates with the locking groove. Through the cooperation between the locking protrusion on the anti-tipping rib and the locking groove in the mounting groove, a locking is provided along the connector insertion direction.

[0043] Or, see Figure 6 As shown, we can prevent the sealing ring from moving with the insertion and removal of the male connector by improving the reliability between the sealing ring and the end face slot. The outer peripheral surface of the sealing ring body 30 is provided with a connecting protrusion 31, and the wall surface of the end face slot 20 is provided with a connecting groove 21 that mates with the connecting protrusion. After the connecting protrusion and the connecting groove mate, they play a locking role for the sealing ring, preventing the sealing ring from moving with the insertion and removal of the male connector, and thus also preventing the possibility of the sealing ring flipping.

[0044] Further, see Figure 1 , Figure 3 and Figure 7 as well as Figure 8 As shown, this utility model also improves the locking structure of the male and female connectors. The surface of the female connector 2 is provided with a support assembly. Specifically, in this embodiment, the support assembly is a symmetrical support plate 21. A pressing spring plate 22 is connected to the support plate 21 via a pin. The pressing spring plate is located between the two support plates. A hook 23 is provided at the front end of the pressing spring plate 22, and an elastic component 24 is provided between the tail end of the pressing spring plate 22 and the female connector. The surface of the male connector 1 is provided with a sloping boss 11 that cooperates with the hook. This utility model... A press spring plate with pin connection is designed, which can be unlocked multiple times. Compared with the cantilever spring plate, it is less prone to fatigue and has a longer service life. The elastic component is used for rebound and retention. When the male connector and the female connector are inserted, the inclined boss guides the hook and drives the front end of the press spring plate to tilt up, which can reduce the resistance of the press spring plate to the insertion of the male and female connectors. After the hook passes the inclined boss, the hook and the inclined boss form a locking relationship, locking the state of the male and female connectors after insertion.

[0045] See Figure 8As shown, the front end of the support plate 21 is provided with a recessed bearing platform 210. The bearing platform is a plane and is lower than the surface of the support plate. The front of both sides of the pressing spring plate 22 is provided with a widening plate 220. When the elastic component is not under external pressure, the lower surface of the tail of the widening plate 220 abuts against the bearing platform 210 of the support plate. The bearing platform supports the widening plate to ensure that the pressing spring plate is basically in a horizontal state, which improves the aesthetics of the connector and avoids the problem that the downward angle of the front end of the pressing spring plate may interfere with the male connector housing.

[0046] See Figure 7 and Figure 8 As shown, the engagement friction surface 230 of the hook 23 and the inclined boss is provided with an angle. The surface of the inclined boss 11 that engages with the hook is provided with a hollow area 110. The width of the hollow area is greater than the width of the hook. The engagement friction surface of the hook engages with the edge of the hollow area of ​​the inclined boss. When a pulling force is received along the connector insertion and extraction direction, since the engagement friction surface is provided with an inclined surface, the effect of the edge of the hollow area on the engagement friction surface can be decomposed into a force along the insertion and extraction direction and a vertical downward force. The hook will not cross the inclined boss and fail to lock, thereby ensuring the reliability of the locking of the male connector and the female connector.

[0047] See Figure 1 As shown, a protective barrier 25 is provided on the female connector 2 at the tail of the pressing spring plate. The protective barrier is integrally formed with the support plate, which effectively prevents the pressing spring plate from tilting and failing after repeated pressing and extends the service life of the product.

[0048] Example 2

[0049] See Figure 9 As shown, the electrical connector includes a male connector 1 and a female connector 2. The female connector 2 has an end face slot 20, and the male connector 1 has an insertion part 10 for inserting into the end face slot. It also includes a sealing ring 3, which is installed at the bottom of the end face slot 20. The sealing ring 3 includes a sealing ring body 30. A guide surface 302 is provided between the inner wall 3000 of the sealing ring body 30 and the end face 3001 of the sealing ring body. The inner diameter of the guide surface 302 gradually increases from the inner wall to the end face. When the male connector and the female connector are inserted, the insertion part of the male connector first acts on the guide surface of the sealing ring and slides to the other end of the sealing ring, finally completing the compression deformation of the sealing ring to achieve a seal between the male connector and the female connector.

[0050] This invention improves the electrical connector, specifically the structure of the sealing ring at the bottom of the end face slot. A guide surface is provided on the sealing ring. Due to the presence of the guide surface, initially, there is no contact between the insertion part of the male connector and the sealing ring when the male connector and female connector are inserted, and there is no resistance to the insertion of the male connector. As the insertion part moves forward and the inner diameter of the guide surface gradually increases from the inner wall to the end face, the insertion part contacts the guide surface. The insertion part will squeeze the guide part of the sealing ring to deform towards the outer peripheral surface of the end face slot. Therefore, in the initial stage of insertion, the presence of the guide surface reduces the insertion force required for connector insertion and can better drive the deformation of the sealing ring perpendicular to the insertion direction. After deformation, the sealing ring forms a seal with the side wall of the insertion slot and between the sealing ring and the insertion part, ensuring the sealing effect after the male and female connectors are inserted.

[0051] In summary, this utility model has the following beneficial effects:

[0052] 1. This utility model improves the electrical connector, specifically by improving the structure of the sealing ring at the bottom of the end face slot. A stepped surface and a guide surface are provided on the sealing ring, which reduces the insertion force required for connector insertion and can better drive the deformation of the sealing ring perpendicular to the insertion direction. After deformation, the sealing ring forms a seal with the side wall and bottom wall of the insertion slot, ensuring the sealing effect after the male and female connectors are inserted.

[0053] 2. This utility model further improves the structure of the pressing spring plate of the electrical connector. This utility model designs a pressing spring plate with a pin connection, which can be unlocked multiple times. Compared with the cantilever spring plate, it is less prone to fatigue and has a better service life. Furthermore, through the design of the angle of the hook and the hollow area of ​​the inclined boss, when a large pulling force is received, the hook will not cross the inclined boss and fail to lock, thus ensuring the reliability of the locking of the male and female connectors.

[0054] Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

Claims

1. An electrical connector, comprising a male connector and a female connector, characterized in that: The female connector has an end face slot, and the male connector has an insertion part that inserts into the end face slot. It also includes a sealing ring, which is installed at the bottom of the end face slot. The sealing ring includes a sealing ring body, and a guide surface is provided between the inner wall of the sealing ring body and the end face of the sealing ring body. The inner diameter of the guide surface gradually increases from the inner wall to the end face. When the male connector and the female connector are inserted, the insertion part of the male connector first acts on the guide surface of the sealing ring and slides to the other end of the sealing ring, finally completing the compression deformation of the sealing ring to achieve a seal between the male connector and the female connector.

2. The electrical connector according to claim 1, characterized in that: The inner wall of the sealing ring body is provided with a stepped surface, and one end of the guide surface is connected to the outer end of the stepped surface. When the male connector and the female connector are inserted, the insertion part of the male connector first acts on the guide surface of the sealing ring and finally slides onto the stepped surface to complete the compression deformation of the sealing ring and achieve the seal between the male connector and the female connector.

3. The electrical connector according to any one of claims 1 or 2, characterized in that: The bottom surface of the end face slot is also provided with an installation groove, and the bottom of the sealing ring body is provided with an anti-tipping rib that is embedded in the installation groove.

4. The electrical connector according to claim 3, characterized in that: The anti-tipping rib is interference-fitted with the mounting groove.

5. The electrical connector according to claim 3, characterized in that: The upper or lower wall of the mounting groove is provided with a locking groove, and the upper or lower surface of the anti-rollover rib is provided with a locking protrusion that cooperates with the locking groove.

6. The electrical connector according to any one of claims 1 or 2, characterized in that: The end face slot has a connecting groove on the wall near the bottom, and the outer surface of the sealing ring has a connecting protrusion that mates with the connecting groove.

7. The electrical connector according to claim 1, characterized in that: The female connector has a support component on its surface, and a pressing spring plate is connected to the support component on its shaft. The front end of the pressing spring plate has a hook, and an elastic component is provided between the tail end of the pressing spring plate and the female connector. The male connector has a beveled boss on its surface that cooperates with the hook.

8. The electrical connector according to claim 7, characterized in that: The support assembly includes symmetrically arranged support plates, with a pressing spring plate located between the two support plates. The front end of the support plate is provided with a recessed bearing platform, and the front of both sides of the pressing spring plate is provided with a widening plate. When the elastic component is not subjected to external pressure, the lower surface of the tail of the widening plate abuts against the bearing platform of the support plate.

9. The electrical connector according to claim 7, characterized in that: The engagement friction surface of the hook and the inclined boss is provided with an angle, and the surface of the inclined boss that engages with the hook is provided with a hollow area, the width of which is greater than the width of the hook.

10. The electrical connector according to claim 8, characterized in that: A protective barrier is provided on the female connector at the tail of the pressing spring plate, and the protective barrier is integrally formed with the support plate.

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