Sealing structure and connector plug

Abstract

The sealing structure comprises a plug shell, a gland and a sealing ring, the far end of the plug shell is a plugging end of the plug shell, the port of the plugging end is provided with a convex connecting end wall, the middle of the plugging end is provided with a limiting slot extending in the radial direction, the plugging end is divided into two parts by the limiting slot, the gland is matched with the plugging end, and the sealing ring is matched with the gland. The gland is provided with a ring part matched with a port of the inserting end and an inserting part matched with the limiting inserting groove, the top of the sealing ring and the ring part are fixedly connected into a whole, the sealing ring is arranged on the outer wall of the connecting end wall in a sleeving mode, and meanwhile the inserting part is inserted into the limiting inserting groove, so that the gland is connected with the inserting end in a clamped mode, and the sealing ring is limited between the gland and the inserting end. According to the utility model, the sealing ring and the gland are fixedly connected into a whole, and the gland and the plugging end of the plug shell are clamped by using the plugging of the limiting slot and the plugging part, so that the sealing ring is limited together, and the sealing performance of the plugging end is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a sealing structure and a connector plug. Background Art

[0002] As disclosed in Publication No. CN 308674558 S, in the field of high-voltage connectors, high-voltage connectors include a plug and a socket that can be plugged together. To ensure a tight connection, a sealing ring is typically embedded in the plug-in end of the plug and socket. Conventional sealing rings are embedded in the end interface. However, the insertion and removal forces between the plug and socket are high, and when the plug is pulled out, the sealing ring is easily pulled out with it, causing inconvenience. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a sealing structure and a connector plug.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] The sealing structure includes a plug housing, a pressure cover and a sealing ring. The distal end of the plug housing is its plug-in end. The port of the plug-in end has an outwardly protruding connecting end wall. A radially extending limiting slot is provided in the middle of the plug-in end. The limiting slot divides the plug-in end into two. The pressure cover matches the plug-in end. The pressure cover has a ring portion that matches the port of the plug-in end and a plug-in portion that matches the limiting slot. The top of the sealing ring is fixedly connected to the ring portion as a whole. The sealing ring is sleeved on the outer wall of the connecting end wall. At the same time, the plug-in portion is inserted into the limiting slot, so that the pressure cover is clamped with the plug-in end to confine the sealing ring between the two.

[0006] Preferably, the plug-in end includes a first slot extending radially, the two ends of the first slot are respectively fixed to the side walls of the plug-in end, and the plug-in end is divided into two symmetrically arranged plug-in ports, and the plug-in portion includes a first plug-in block matching the first slot, the first plug-in block extends axially and is plugged into the first slot.

[0007] Preferably, the first slot is bar-shaped, and the first insertion block includes a limit frame and an insertion strip. The limit frame matches the first slot, and a group of the insertion strips are arranged at intervals in the limit frame and extend axially and protrude outward from the bottom of the limit frame. A protruding first clamping block is provided on one side of the bottom of the insertion strip. The outer side surface of the first clamping block is an inclined surface extending obliquely, and its top surface is an end surface extending straightly. The first clamping blocks are staggered so that there is at least one first clamping block on each side of the first insertion block. When the bottom of the limit frame abuts against the top surface of the first slot, the top surface of the first clamping block is clamped with the bottom surface of the first slot.

[0008] Preferably, a second protruding block is further provided on one side of the bottom of the insert, and the second block and the first block are respectively located on both sides of the same insert, the second block is located at the bottom of the first block, and the outer side surface and top surface of the second block are both inclined surfaces extending obliquely.

[0009] Preferably, the two side walls of the first slot are inclined so that the spacing of the first slot gradually decreases from the outside to the inside, and the inclination of the slot wall of the first slot is consistent with the inclination of the outer side surfaces of the first card block and the second card block. The bottom of the slot wall of the first slot has a straight section, and the connecting section between the outer side surfaces and the top surface of the first card block and the second card block is also a straight section.

[0010] Preferably, a second slot is formed at one end of the first slot fixedly connected to the side wall of the plug-in end, the extension direction of the second slot is perpendicular to the first slot, the second slot and the first slot together constitute the limiting slot, a guide protrusion is provided in the middle of the second slot, the plug-in portion has a second plug-in block matching the second slot, and the second plug-in block is inserted into the second slot.

[0011] Preferably, the ring portion is a rectangle that matches the plug-in end, and the corners of both are chamfered, and the corners of the ring portion have guide plugs extending axially inward. When the pressure cover is engaged with the plug-in end, the guide plugs are inserted into the plug-in end and fit tightly against the inner wall of the connecting end wall.

[0012] Preferably, the sealing ring is integrally injection-molded with the pressure cover through a rubber encapsulation process, the ring portion is evenly distributed with connecting holes with T-shaped cross sections, and the top of the sealing ring has a connecting point embedded in the connecting hole.

[0013] A connector plug includes the sealing structure described above.

[0014] The beneficial effects of the present invention are mainly reflected in:

[0015] 1. The sealing ring and the gland are fixed together, and the limiting slot and the plug-in part are used to engage the gland with the plug-in end of the plug housing to limit the sealing ring, thereby effectively limiting the position of the sealing ring, preventing the sealing ring from being displaced, falling off or flipping, and ensuring the sealing of the plug-in end;

[0016] 2. The first plug-in block is composed of a group of insert strips, which ensure that the first plug-in block meets the length of the first slot while improving its toughness. This makes the first plug-in block less likely to break and less likely to be completely pulled out when the plug is inserted or removed, thereby ensuring the reliability and stability of the connection between the gland and the plug end.

[0017] 3. The second clamping block and the first clamping block are respectively located on both sides of the same insert, with the second clamping block located at the bottom of the first clamping block, thereby reducing the width of a single insert, minimizing deformation of the first slot caused by the insert when inserted, and reducing the pressure required for insertion of a single insert. The first and second clamping blocks on adjacent inserts are staggered, so that a first insert block formed by a group of inserts has first and second clamping blocks on both sides. This allows both sides of the first insert block to be engaged with the first slot, ensuring balanced force on both sides of the first slot and preventing the first insert block from being easily dislodged.

[0018] 4. The second slot is perpendicular to the first slot, so that when the first plug-in block and the second plug-in block are inserted into the first slot and the second slot respectively, a vertical plugging force is generated to prevent the gland from being displaced, thereby enhancing the matching degree between the gland and the plug end, and also enhancing the reliability and stability of the plugging between the two;

[0019] 5. The four corners of the ring are provided with guide plugs that fit tightly against the inner wall of the connecting end wall to ensure the tightness between the sealing ring and the outer wall of the connecting end wall, thus ensuring the sealing of the plug-in end;

[0020] 6. The sealing ring is formed integrally with the gland by using the rubber coating process. The connection point on the top of the sealing ring is embedded in the connection hole on the ring part to ensure the tightness and consistency of the connection between the sealing ring and the gland to avoid detachment between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The technical solution of the utility model is further described below with reference to the accompanying drawings:

[0022] Figure 1 : Explosion diagram of an embodiment of the utility model;

[0023] Figure 2 : A partial cross-sectional view of an embodiment of the present utility model;

[0024] Figure 3 : A schematic diagram of a gland in an embodiment of the present invention;

[0025] Figure 4 : A schematic diagram of a plug housing in an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The present invention will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and any structural, methodological, or functional modifications made by a person skilled in the art based on these embodiments are included within the scope of protection of the present invention.

[0027] In the description of the scheme, it should be noted that the terms "center", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Moreover, in the description of the scheme, with the operator as a reference, the direction close to the operator is the proximal end, and the direction away from the operator is the distal end.

[0028] like Figures 1 to 4 As shown, the utility model discloses a sealing structure, including a plug housing 1, a pressure cover 2 and a sealing ring 3, the distal end of the plug housing 1 is its plug-in end, the port of the plug-in end has an outwardly protruding connecting end wall 101, the middle of the plug-in end is provided with a radially extending limiting slot, the limiting slot divides the plug-in end into two, the pressure cover 2 matches the plug-in end, the pressure cover 2 has a ring portion 201 matching the port of the plug-in end, and a plug-in portion matching the limiting slot, the top of the sealing ring 3 is fixedly connected to the ring portion 201 as a whole, the sealing ring 3 is sleeved on the outer wall of the connecting end wall 101, and the plug-in portion is inserted into the limiting slot, so that the pressure cover 2 is clamped with the plug-in end to confine the sealing ring 3 between the two.

[0029] In this solution, the sealing ring 3 and the pressure cover 2 are fixed together as one body, and the limiting slot and the plug-in portion are plugged into each other to make the pressure cover 2 engage with the plug-in end of the plug housing 1, so as to jointly limit the sealing ring 3, thereby effectively limiting the position of the sealing ring 3, preventing the sealing ring 3 from being displaced, falling off or flipping, and ensuring the sealing of the plug-in end.

[0030] Preferably, the sealing ring 3 is integrally injection-molded with the gland 2 through an overmolding process, wherein the ring portion 201 is uniformly distributed with connection holes 2011 having a T-shaped cross section, and the top of the sealing ring 3 has connection points 301 embedded in the connection holes 2011. The gland 2 is preferably injection-molded using plastic. After the gland 2 is injection-molded, the connection holes 2011 are overmolded at multiple points, i.e., the connection points 301 at the top of the sealing ring 3 are embedded in the connection holes 2011, so that the sealing ring 3 and the gland 2 are tightly connected as one, preventing the sealing ring 3 from falling off or turning over, ensuring the tightness and consistency of the connection between the sealing ring 3 and the gland 2, and preventing the two from becoming detached.

[0031] Furthermore, the plug end includes a radially extending first slot 102, the two ends of which are fixedly connected to the side walls of the plug end, dividing the plug end into two symmetrically arranged plug ports. The plug portion includes a first plug block that matches the first slot 102, which extends axially and plugs into the first slot 102. In the illustrated embodiment, two symmetrical accommodating cavities for inserting terminals are provided within the plug housing 1, and the two plug ports are respectively provided to mate with the two accommodating cavities. Of course, in other feasible embodiments, the plug housing 1 may also include a single accommodating cavity for inserting terminals.

[0032] Specifically, the first slot 102 is bar-shaped, and the first insertion block includes a limit frame 200 and an insertion strip 202. The limit frame 200 matches the first slot 102. A group of the insertion strips 202 are arranged at intervals in the limit frame 200 and extend axially and protrude from the bottom of the limit frame 200. A protruding first clamping block 2021 is provided on one side of the bottom of the insertion strip 202. The outer side surface of the first clamping block 2021 is an inclined surface extending obliquely, and its top surface is an end surface extending straightly. The first clamping blocks 2021 are staggered so that there is at least one first clamping block 2021 on each side of the first insertion block. When the bottom of the limit frame 200 abuts against the top surface of the first slot 102, the top surface of the first clamping block 2021 is clamped with the bottom surface of the first slot 102.

[0033] Furthermore, a second, outwardly projecting latch 2022 is provided on one side of the bottom of the insert 202. The second latch 2022 and the first latch 2021 are located on either side of the insert 202. The second latch 202 is located at the bottom of the first latch 2021, and both the outer side and top surfaces of the second latch 202 are inclined, extending inclines. The second latch 202 is positioned at the bottom of the first latch 2021 to form a double engagement with the first latch 2021, preventing the insert 202 from being directly pulled out due to excessive insertion and removal force.

[0034] To enhance smooth insertion of the first plug-in block, the side walls of the first slot 102 are tilted so that the spacing of the first slot 102 gradually decreases from the outside to the inside. The slope of the first slot 102 walls is consistent with the slope of the outer surfaces of the first and second clamping blocks 2021 and 2022. Furthermore, the bottom of the first slot 102 walls has a straight section, and the connecting section between the outer and top surfaces of the first and second clamping blocks 2021 and 2022 is also a straight section. The provision of these straight sections prevents excessive wear between the first and second clamping blocks 2021 and 2022 and the first slot 102, ensuring a secure connection between them.

[0035] In this embodiment, the second clamping block 2022 and the first clamping block 2021 are located on either side of the same insertion strip 202. This structure reduces the width of a single insertion strip 202, minimizing the deformation of the first slot 102 caused by the insertion of the insertion strip 202, and also reduces the pressure required to insert a single insertion strip 202. Furthermore, the first clamping blocks 2021 and second clamping blocks 2022 on adjacent insertion strips 202 are staggered, so that both sides of the first insertion block formed by a group of insertion strips 202 have first clamping blocks 2021 and second clamping blocks 2022. This allows both sides of the first insertion block to engage with the first delivery slot 102, ensuring balanced force on both sides of the first slot 102 and preventing the first insertion block from becoming dislodged.

[0036] like Figure 1 and Figure 4 As shown, a second slot 103 is formed at one end of the first slot 102, which is fixed to the side wall of the plug end. The second slot 103 extends perpendicularly to the first slot 102. The second slot 103 and the first slot 102 together constitute the limiting slot. A guide protrusion 1031 is located in the middle of the second slot 103. The plug portion includes a second plug 203 that matches the second slot 103 and is inserted into the second slot 103. The second slot 103 is perpendicular to the first slot 102, so that when the first and second plugs 203 are inserted into the first and second slots 102 and 103, respectively, a vertical insertion force is generated, preventing displacement of the gland 2, enhancing the fit between the gland 2 and the plug end, and also improving the reliability and stability of the plugging connection between the two. The provision of the guide protrusion 1031 guides the second plug 203, maintaining its vertical insertion direction.

[0037] In a preferred embodiment, the plug-in end is divided into two symmetrically arranged plug-in ports, and the corners of the plug-in ports are beveled, so that two trapezoidal connections are formed between the two ends of the first slot 102 and the side walls of the plug-in end, one of which forms the second slot 103, and the other forms an opening to avoid the position of the plug-in cavity for setting the signal terminal on the plug housing 1.

[0038] In a preferred embodiment, the ring portion 201 is a rectangular shape that matches the plug end, with both corners chamfered. The corners of the ring portion 201 are provided with guide blocks 204 extending axially inward. When the gland 2 is engaged with the plug end, the guide blocks 204 are inserted into the plug end and tightly fit against the inner wall of the connecting end wall 101. This structure allows the guide blocks 204 to exert an inward pulling force on the sealing ring 3, thereby ensuring a tighter fit between the sealing ring 3 and the outer wall of the connecting end wall 101, thereby ensuring the sealing of the plug end.

[0039] In addition, the present invention also discloses a connector plug including the aforementioned sealing structure. The connector plug also includes a ferrule assembly disposed within the plug housing 1. The ferrule assembly includes necessary components such as terminals. The ferrule assembly is prior art and is not the focus of this solution, so it will not be described in detail here.

[0040] It should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation method can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0041] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. Sealing structure, characterized by: The invention comprises a plug housing (1), a pressure cover (2) and a sealing ring (3), wherein the distal end of the plug housing (1) is a plug-in end thereof, the port of the plug-in end is provided with an outwardly protruding connecting end wall (101), the middle of the plug-in end is provided with a radially extending limiting slot, the limiting slot divides the plug-in end into two, the pressure cover (2) matches the plug-in end, the pressure cover (2) has a ring portion (201) matching the port of the plug-in end, and a plug-in portion matching the limiting slot, the top of the sealing ring (3) is fixedly connected to the ring portion (201) as a whole, the sealing ring (3) is sleeved on the outer wall of the connecting end wall (101), and the plug-in portion is inserted into the limiting slot, so that the pressure cover (2) is clamped with the plug-in end to confine the sealing ring (3) therebetween.

2. The sealing structure according to claim 1, wherein: The plug-in end comprises a first slot (102) extending radially, the two ends of the first slot (102) being fixedly connected to the side wall of the plug-in end respectively, and the plug-in end is divided into two symmetrically arranged plug-in ports, and the plug-in portion comprises a first plug-in block matching the first slot (102), the first plug-in block extending axially and plugged into the first slot (102).

3. The sealing structure according to claim 2, wherein: The first slot (102) is in a strip shape, and the first plug-in block comprises a limit frame (200) and an inserting strip (202). The limit frame (200) matches the first slot (102). A group of the inserting strips (202) are arranged at intervals in the limit frame (200) and extend axially to protrude from the bottom of the limit frame (200). A first protruding clamping block (2021) is provided on one side of the bottom of the inserting strip (202). The outer side surface of the first clamping block (2021) is an inclined surface extending obliquely, and the top surface is an end surface extending straightly. The first clamping blocks (2021) are staggered so that there is at least one first clamping block (2021) on each side of the first plug-in block. When the bottom of the limit frame (200) abuts against the top surface of the first slot (102), the top surface of the first clamping block (2021) is clamped with the bottom surface of the first slot (102).

4. The sealing structure according to claim 3, wherein: A second outwardly protruding block (2022) is further provided on one side of the bottom of the insert (202), and the second block (2022) and the first block (2021) are respectively located on two sides of the same insert (202), the second block (2022) is located at the bottom of the first block (2021), and the outer side surface and the top surface of the second block (2022) are both inclined surfaces extending obliquely.

5. The sealing structure according to claim 4, characterized in that: The groove walls on both sides of the first slot (102) are arranged at an inclination, so that the spacing of the first slot (102) gradually decreases from the outside to the inside, and the inclination of the groove wall of the first slot (102) is consistent with the inclination of the outer side surfaces of the first clamping block (2021) and the second clamping block (2022), the bottom of the groove wall of the first slot (102) has a straight surface section, and the connecting section between the outer side surfaces and the top surface of the first clamping block (2021) and the second clamping block (2022) is also a straight surface section.

6. The sealing structure according to claim 2, wherein: A second slot (103) is formed at one end of the first slot (102) fixedly connected to the side wall of the plug-in end, the extension direction of the second slot (103) is perpendicular to the first slot (102), the second slot (103) and the first slot (102) together constitute the limit slot, a guide protrusion (1031) is provided in the middle of the second slot (103), the plug-in portion has a second plug-in block (203) matching the second slot (103), and the second plug-in block (203) is inserted into the second slot (103).

7. The sealing structure according to claim 1, wherein: The ring portion (201) is a rectangle that matches the plug end, and the corners of both are chamfered. The corners of the ring portion (201) have guide plugs (204) that extend axially inward. When the pressure cover (2) is engaged with the plug end, the guide plugs (204) are inserted into the plug end and fit tightly against the inner wall of the connecting end wall (101).

8. The sealing structure according to claim 7, wherein: The sealing ring (3) is integrally injection-molded with the gland (2) through a rubber encapsulation process; the ring portion (201) is uniformly provided with connection holes (2011) with a T-shaped cross section; and the top of the sealing ring (3) has a connection point (301) embedded in the connection hole (2011).

9. Connector plug, characterized in that: The invention comprises a sealing structure as described in any one of claims 1 to 8.

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