Plug and sealing cover plate thereof

Abstract

The utility model relates to the technical field of parts of conductive connecting devices, in particular to a plug and a sealing cover plate thereof. According to the plug provided by the utility model, the conventional plug is improved, especially the structure of the sealing cover plate is optimized, and the reinforcing core plate is arranged in the insulating plate body of the sealing cover plate, so that the rigidity and the strength of the sealing cover plate are improved, the condition of warping after the fastening bolt is tightened can be effectively avoided, and the service life of the plug is prolonged. The sealing cover plate is tightly matched with the sealing rubber ring during use, and the sealing reliability is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the part technical field of conductive connecting device, especially plug and its sealing cover plate. BACKGROUND

[0002] High voltage connectors are used on new energy vehicles to realize power transmission. Figures 1-4 As shown in the figure, the existing high voltage connector comprises a bent shell, the bent shell comprises a plug-in barrel segment 10 and a wiring barrel segment 11, a conductive terminal with one end extending into the plug-in barrel segment 10 is installed in the wiring barrel segment 11, the end of the conductive terminal in the wiring barrel segment 11 is used for connecting with a cable, the end of the conductive terminal in the plug-in barrel segment 10 is used for bolt connection with a contact piece of an adapter socket, one end of the plug-in barrel segment 10 is a plug-in end for plugging with the adapter socket, the other end of the plug-in barrel segment 10 has a dismounting opening 12 for dismounting connection bolts. In order to ensure sealing, a sealing cover plate 15 is arranged at the dismounting opening 12 of the plug-in barrel segment 10. The sealing cover plate 15 is an isosceles triangle with arc transitions at each corner, one side edge of the sealing cover plate 15 is hinged to the plug-in barrel segment 10, the other side corner of the sealing cover plate 15 opposite to the hinged edge is provided with a bolt through hole 155, a screw hole 13 is arranged on the wiring barrel segment 11 at a position corresponding to the bolt through hole 155, when the sealing cover plate 15 is buckled to the dismounting opening 12, a fastening bolt 16 is passed through the bolt through hole 155 and screwed into the screw hole 13, so as to lock and buckle the sealing cover plate 15 at the dismounting opening 12, a sealing rubber ring 14 is installed at the opening edge of the dismounting opening 12, the inner side of the sealing cover plate 15 has an annular sealing cooperation surface 156 corresponding to the sealing rubber ring 14, the sealing cover plate 15 and the sealing rubber ring 14 are pressed to ensure sealing at this position.

[0003] However, it is found in actual use that after the plug fastening bolt is tightened, the sealing cover plate will be pivoted at the hinged position, the surrounding area is easy to be warped under the action of the tightening force, a gap is generated between the sealing cover plate and the sealing rubber ring or the pressure is reduced, and sealing failure is caused. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a sealing cover plate to solve the problem that the existing sealing cover plate is easy to cause sealing failure in use. Meanwhile, the utility model aims at providing a plug to solve the problem that the existing plug is easy to cause sealing failure at the sealing cover plate.

[0005] The sealing cover plate of the utility model comprises an insulating plate body, a hinged structure is arranged at one side edge of the insulating plate body, a bolt through hole for passing a fastening bolt is arranged on the insulating plate body, the inner side of the insulating plate body has an annular sealing cooperation structure for pressure tight cooperation with a sealing rubber ring, and a reinforcing core plate is arranged in the insulating plate body.

[0006] Further, the reinforcing core plate covers the annular sealing fitting structure in a projection direction perpendicular to the reinforcing core plate.

[0007] Further, the reinforcing core plate is provided with a reinforcing protrusion.

[0008] Further, the reinforcing protrusion is in the inner side of the annular sealing fitting structure in a projection direction perpendicular to the reinforcing core plate.

[0009] Further, the reinforcing protrusion protrudes towards the outer side of the insulating plate body.

[0010] Further, the reinforcing core plate is provided with a hollow structure for filling the injection material of the insulating plate body during injection.

[0011] Further, the reinforcing core plate has an arc-shaped notch semi-surrounding the bolt hole, or has an avoiding inner hole surrounding the bolt hole.

[0012] Further, the reinforcing core plate is embedded in the insulating plate body and the insulating plate body has an inner side portion and an outer side portion on both sides of the reinforcing core plate, the reinforcing core plate is provided with a positioning hole, and the inner side portion or the outer side portion is provided with a positioning rod hole for positioning the reinforcing core plate during injection of the insulating plate body.

[0013] Further, the positioning hole is distributed along the edge of the reinforcing core plate.

[0014] Further, the positioning rod hole is on the outer side portion, and the inner side portion is provided with a ejector rod hole.

[0015] Further, the ejector rod hole is arranged in a position adjacent to the positioning rod hole.

[0016] Further, the ejector rod hole is on the outer side portion, and the inner side portion is provided with a ejector rod hole.

[0017] Further, the ejector rod hole is arranged in a position adjacent to the positioning rod hole.

[0018] The utility model discloses an improved sealing cover plate, which is provided with a reinforcing core plate in the insulating plate body, thereby increasing the rigidity and strength of the sealing cover plate, effectively avoiding the warping of the sealing cover plate after the tightening of the fastening bolt, ensuring the close cooperation between the sealing cover plate and the sealing rubber ring during use, and ensuring the reliability of the sealing.

[0019] The utility model discloses a plug, which comprises a bent shell, the bent shell comprises a plug-in cylinder segment and a wiring cylinder segment, one end of the plug-in cylinder segment is a plug-in end, the other end has a dismounting opening, a sealing cover plate is installed at the dismounting opening, the sealing cover plate comprises an insulating plate body, a hinged structure is arranged on one side edge of the insulating plate body, a bolt through hole is arranged on the insulating plate body for the fastening bolt to pass through, the inner side of the insulating plate body is provided with an annular sealing cooperation structure for pressure tight cooperation with a sealing rubber ring, and a reinforcing core plate is arranged in the insulating plate body.

[0020] Further, the reinforcing core plate covers the annular sealing cooperation structure in the projection direction perpendicular to the reinforcing core plate.

[0021] Further, the reinforcing core plate is provided with a reinforcing convex part.

[0022] Further, the contour shape of the reinforcing convex part is consistent with the shape of the annular sealing cooperation structure, and the reinforcing convex part is located on the inner side of the annular sealing cooperation structure in the projection direction perpendicular to the reinforcing core plate.

[0023] Further, the reinforcing convex part protrudes towards the outer side of the insulating plate body.

[0024] Further, the reinforcing core plate is provided with a hollow structure for filling the injection molding material of the insulating plate body during injection molding.

[0025] Further, the reinforcing core plate has an arc-shaped notch for semi-surrounding the bolt through hole, or the reinforcing core plate has a relief inner hole for surrounding the bolt through hole.

[0026] Further, the reinforcing core plate is embedded in the insulating plate body, and the insulating plate body has an inner side part and an outer side part on both sides of the reinforcing core plate, the reinforcing core plate is provided with a positioning hole, and the inner side part or the outer side part is provided with a positioning rod through hole for positioning the reinforcing core plate during injection molding of the insulating plate body.

[0027] Further, the positioning hole is distributed along the edge of the reinforcing core plate.

[0028] Further, the positioning rod through hole is located on the outer side part, and the inner side part is provided with a ejector rod through hole.

[0029] Further, the ejector rod through hole and the positioning rod through hole are arranged in a staggered manner, and are located in the vicinity of the positioning rod through hole.

[0030] Further, in the plate surface extension direction of the reinforcing core plate, the ejector rod through hole is located on the outer side of the positioning rod through hole.

[0031] Further, the ejector rod through hole is arranged in a staggered manner with the annular sealing cooperation structure.

[0032] The utility model discloses a plug improves the existing plug, especially optimizes its sealing cover plate's structure, sets up the reinforcing core board through the insulating board body of sealing cover plate, has increased the rigidity and strength of sealing cover plate, can effectively avoid the warping situation after the fastening bolt is tightened, has guaranteed the sealing cover plate and sealing rubber ring close cooperation when using, has guaranteed the reliability of sealing. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is the stereoscopic exploded view of the existing plug;

[0034] Figure 2 It is the structure schematic diagram of sealing cover plate of the existing plug in opening state;

[0035] Figure 3 It is the structure schematic diagram of sealing cover plate of the existing plug in closing state;

[0036] Figure 4 It is the structure schematic diagram of sealing cover plate of the existing plug when locking and fixing through the fastening bolt;

[0037] Figure 5 It is the structure schematic diagram of sealing cover plate in the embodiment of the utility model's plug (insulating board body partial section);

[0038] Figure 6 It is the structure schematic diagram of sealing cover plate in the embodiment of the utility model's plug (partial section);

[0039] Figure 7 It is the structure schematic diagram of reinforcing core board;

[0040] Figure 8 It is the outside structure schematic diagram of sealing cover plate in the embodiment of the utility model's plug;

[0041] Figure 9 It is Figure 8 The section view of A-A in it;

[0042] Figure 10 It is the inside structure schematic diagram of sealing cover plate in the embodiment of the utility model's plug;

[0043] Figure 11 It is Figure 10 It is the section view of B-B.

[0044] In the figure: 10, plug-in barrel section; 11, wire barrel section; 12, dismounting opening; 13, screw hole; 14, sealing rubber ring; 15, sealing cover plate; 17, hinged structure; 16, fastening bolt; 150, insulating plate body; 151, reinforcing core plate; 1501, positioning rod perforation; 1511, positioning hole; 1510, reinforcing convex part; 1512, arc-shaped notch; 155, bolt perforation; 1502, ejector rod perforation; 156, annular sealing cooperation surface. DETAILED DESCRIPTION

[0045] The features and performances of the utility model are described in further detail below in combination with embodiments.

[0046] The utility model aims at the low rigidity and strength of the sealing cover plate on the existing plug, and the problem that warping deformation occurs when the plug is locked and fixed by the fastening bolt, which leads to poor sealing cooperation with the sealing rubber ring. By improving the rigidity and strength of the sealing cover plate, warping deformation is avoided, and the sealing cooperation with the sealing rubber ring is ensured, and the sealing effect is ensured.

[0047] Based on the above idea, various different plug embodiments are provided below for illustration.

[0048] The plug comprises a bent shell and a sealing cover plate 15 installed at the dismounting opening 12 of the bent shell. The sealing cover plate 15 is provided with an annular sealing cooperation structure, which can be an annular sealing cooperation surface for pressure cooperation with the annular sealing rubber ring installed at the rim of the dismounting opening 12, or can also be an annular sealing rubber ring provided on the sealing cover plate 15 for cooperation with the dismounting opening 15. Because the improvement of the plug in the utility model is mainly in the structural design of the sealing cover plate 15, the bent shell can completely adopt the existing bent shell, and detailed description is not given herein. As for the sealing cover plate 15, the utility model improves the strength and rigidity of the sealing cover plate 15 by providing a reinforcing core plate 151 thereon. Therefore, in the following plug embodiments, the introduction of the sealing cover plate 15 focuses on the setting mode of the reinforcing core plate 151 on the sealing cover plate 15, and the hinged structure 17 between the sealing cover plate 15 and the bent shell and the locking and fixing between the sealing cover plate 15 and the bent shell are not described in detail.

[0049] In a basic embodiment, as Figures 5-6As shown, the sealing cover 15 includes an insulating plate 150 and a reinforcing core plate 151, which is a metal plate, connected to the outer surface of the insulating plate 150 by adhesive or screws. Alternatively, during the injection molding of the insulating plate 150, the reinforcing core plate 151 can be fixed in the injection mold, embedding it into the outer surface of the insulating plate 150. These novel structures can improve the rigidity and strength of the sealing cover 15. To achieve better insulation performance and improve the bonding strength between the reinforcing core plate 151 and the insulating plate 150, in one embodiment, the reinforcing core plate 151 can be integrally embedded within the insulating plate 150, and the insulating plate 150 has inner and outer portions on both sides of the reinforcing core plate 151. To obtain this structure, either single-stage or double-stage injection molding can be used.

[0050] In one embodiment, the sealing cover 15 retains the same shape as the existing sealing cover 15, and the reinforcing core plate 151 has the same shape as the sealing cover 15, but its size is slightly smaller than that of the sealing cover 15. In other embodiments, the reinforcing core plate 151 is an isosceles triangle with each angle corresponding to one of the angles of the sealing cover 15, or a rectangular structure corresponding to the annular sealing mating surface 156, or a circle. The reinforcing core plate 151 can be a plate structure with high integrity in the plate extension direction, or a frame plate structure. Regardless of the shape, in the preferred embodiment, the reinforcing core plate 151 completely covers the annular sealing mating surface 156 in the projection direction perpendicular to the reinforcing core plate 151. This can more directly ensure the rigidity and strength at the annular sealing mating surface 156, ensuring the sealing mating effect.

[0051] In one embodiment, the reinforcing core plate 151 is a flat plate structure. To further enhance the rigidity of the reinforcing core plate 151, in one embodiment, the reinforcing core plate 151 is provided with reinforcing protrusions 1510, such as stamped protrusions, which can improve the anti-warping performance of the reinforcing core plate 151. The reinforcing protrusions 1510 can be a plurality of discretely distributed protrusions, and the plurality of reinforcing protrusions 1510 are evenly arranged on the reinforcing core plate 151. In a more preferred embodiment, such as... Figure 7 As shown, the reinforcing core plate 151 is a plate with a shape similar to that of the sealing cover plate 15. The outline shape of the reinforcing protrusion 1510 is consistent with the shape of the annular sealing mating surface 156, and in the projection direction perpendicular to the reinforcing core plate 151, the reinforcing protrusion 1510 is located inside the annular sealing mating surface 156. In this way, the rigidity and strength of the plate portion of the reinforcing core plate 151 located around the reinforcing protrusion 1510 can be greatly improved.

[0052] The protruding direction of the reinforcing protrusion 1510 is not specifically limited, for example, it can be towards the inner side of the sealing cover plate 15 or the outer side of the sealing cover plate 15. In order to be able to reserve better accommodation space for the inner side of the sealing cover plate 15, while ensuring the electrical insulation performance, in an alternative preferred embodiment, the reinforcing protrusion 1510 protrudes towards the outer side of the insulating plate body 150.

[0053] As described above, on the basis of the embodiment in which the reinforcing core plate 151 is entirely embedded in the insulating plate body 150, in an alternative preferred embodiment, the reinforcing core plate 151 is provided with a hollow structure, so that the injection molding material of the insulating plate body 150 can be filled into the holes of the hollow structure during injection molding, thereby improving the structural strength between the insulating plate body 150 and the reinforcing core plate 151.

[0054] As described above, the warping of the sealing cover plate 15 is mainly due to the interaction between the single-point force of the fastening bolt 16 on the sealing cover plate 15 and the hinged position of the sealing cover plate 15. In order to be able to transmit the single-point force of the fastening bolt 16 on the sealing cover plate 15 to the entire plate surface, thereby better avoiding the occurrence of warping, in a preferred embodiment, the reinforcing core plate 151 has an arc-shaped notch 1512 that is semi-surrounded around the periphery of the bolt through hole 155, or the reinforcing core plate 151 has a relieved inner hole that is completely surrounded around the periphery of the bolt through hole 155. In this way, when the fastening bolt 16 is locked to the sealing cover plate 15, the locking force of the fastening bolt 16 can be transmitted to the reinforcing core plate 151, and then transmitted to more plate surfaces of the sealing cover plate 15 through the reinforcing core plate 151 as a whole.

[0055] In addition, the structure of the sealing cover plate 15 in which the reinforcing core plate 151 is injection molded is also provided herein. Specifically, as shown in FIG. 6, the reinforcing core plate 151 is provided with a plurality of bolt through holes 1511, and the bolt through holes 1511 are arranged in a staggered manner. Figures 8-11As shown, after the injection molding is completed, the reinforcing core plate 151 is embedded in the insulating plate body 150 and the insulating plate body 150 has an inner side portion and an outer side portion on both sides of the reinforcing core plate 151, the reinforcing core plate 151 is provided with positioning holes 1511, the positions of the positioning holes 1511 are determined according to the accurate positioning of the reinforcing core plate 151, and the positioning holes 1511 are distributed on the reinforcing core plate 151 in a discrete manner, in a preferred embodiment, the positioning holes 1511 are distributed along the edges of the reinforcing core plate 151. The outer side portion is provided with positioning rod through holes 1501 for positioning the reinforcing core plate 151 during the injection molding of the insulating plate body 150 at positions corresponding to the positioning holes 1511. The positioning rod through holes 1501 are coaxially arranged with the positioning holes 1511, the diameter of the positioning rod through holes 1501 is greater than the diameter of the positioning holes 1511, and a stepped positioning rod with a small-diameter section at the end can be used to position the reinforcing core plate 151 in the insulating plate body 150. The inner side portion of the insulating plate body 150 is provided with a ejector rod through hole 1502 for the ejector rod to pass through during the injection molding to press the reinforcing core plate 151. In an embodiment, the positioning holes 1511 are blind holes, and the ejector rod and the positioning rod can be coaxially arranged. Considering that the reinforcing core plate 151 is relatively thin, in an embodiment, the positioning holes 1511 are through holes, the ejector rod through hole 1502 and the positioning rod through hole 1501 are arranged in a staggered manner, and the ejector rod through hole 1502 is located near the positioning rod through hole 1501, the ejector rod and the positioning rod jointly act on the reinforcing core plate 151 from both sides of the reinforcing core plate 151 to jointly maintain the position of the reinforcing core plate 151 during the injection molding of the sealing cover plate 15.

[0056] In an embodiment, in the extension direction of the plate surface of the reinforcing core plate 151, the ejector rod through hole 1502 is located on the inner side of the positioning rod through hole 1501, so that the ejector rod through hole 1502 is closer to the annular sealing surface 156 and intersects with the annular sealing surface 156. In order to prevent the sealing rubber ring 14 from interfering with the ejector rod hole after being compressed and deformed to cause sealing failure, in an embodiment, the ejector rod through hole 1502 is located on the outer side of the positioning rod through hole 1501 and on the outer side of the annular sealing surface, so as to be staggered with the annular sealing surface 156. Of course, in other embodiments, the ejector rod through hole 1502 can also be located in other positions of the positioning rod through hole 1501, so as to be staggered with the annular sealing surface 156.

[0057] Of course, when the sealing cover plate 15 is made by using secondary injection molding, the ejector pin hole 1502 can not be arranged on the inner side portion of the insulating plate body 150 which is inside the reinforcing core plate 151, the positioning hole 1511 on the reinforcing core plate 151 is a blind hole, the reinforcing core plate 151 is positioned by the positioning rod and the positioning hole 1511 on the reinforcing core plate 151, and then the reinforcing core plate 151 is pressed on the mold for one-time injection molding to form the portion of the insulating plate body 150 which is outside the reinforcing core plate 151, and then secondary injection molding is performed to form the inner side portion of the insulating plate body 150 which is inside the reinforcing core plate 151.

[0058] The sealing cover plate of the embodiment of the utility model: its specific structure is same with the sealing cover plate structure in the embodiment of the above plug, this article does not add superfluous words.

[0059] The above is only the preferred embodiment of the utility model, and does not limit the utility model, the patent protection scope of the utility model is subject to the claims, and equivalent structural changes made by using the content of the specification and drawings of the utility model should be included in the protection scope of the utility model.

Claims

1. A sealing cover, comprising an insulating plate (150), wherein a hinge structure (17) is provided on one side edge of the insulating plate (150), a bolt hole (155) is provided on the insulating plate (150) for a fastening bolt (16) to pass through, and an annular sealing fit structure is provided on the inner side of the insulating plate (150) for pressing and fitting with a sealing ring (14), characterized in that, The insulating plate (150) is provided with a reinforcing core plate (151).

2. The sealing cover plate according to claim 1, characterized in that, in The reinforcing core plate (151) covers the annular sealing fit structure in a direction perpendicular to the projection of the reinforcing core plate (151).

3. The sealing cover plate according to claim 2, characterized in that, The reinforcing core plate (151) is provided with a reinforcing protrusion (1510).

4. The sealing cover plate according to claim 3, characterized in that, The outline shape of the reinforcing protrusion (1510) is consistent with the shape of the annular sealing fit structure, and in the projection direction perpendicular to the reinforcing core plate (151), the reinforcing protrusion (1510) is located inside the annular sealing fit structure.

5. The sealing cover plate according to claim 4, characterized in that, The reinforcing protrusion (1510) protrudes outward toward the outside of the insulating plate (150).

6. The sealing cover plate according to any one of claims 1-5, characterized in that, The reinforcing core board (151) has a hollow structure for filling the injection molding material of the insulating board (150) during injection molding.

7. The sealing cover plate according to any one of claims 1-5, characterized in that, The reinforcing core plate (151) has an arc-shaped notch (1512) that partially surrounds the bolt through hole (155), or the reinforcing core plate (151) has a clearance inner hole that surrounds the bolt through hole (155).

8. The sealing cover plate according to any one of claims 1-5, characterized in that, The reinforcing core plate (151) is embedded in the insulating plate (150), and the insulating plate (150) has an inner part and an outer part on both sides of the reinforcing core plate (151). The reinforcing core plate (151) is provided with positioning holes (1511). The inner part or the outer part is provided with positioning rod through holes (1501) corresponding to the positioning holes (1511) to position the reinforcing core plate (151) during injection molding of the insulating plate (150).

9. The sealing cover plate according to claim 8, characterized in that, The positioning holes (1511) are distributed along the edge of the reinforcing core plate (151).

10. The sealing cover plate according to claim 9, characterized in that, The positioning rod through hole (1501) is located on the outer part, and the inner part is provided with a top rod through hole (1502).

11. The sealing cover plate according to claim 10, characterized in that, The top rod through hole (1502) is staggered with the positioning rod through hole (1501) and is located near the positioning rod through hole (1501).

12. The sealing cover plate according to claim 11, characterized in that, In the extension direction of the reinforcing core plate (151), the top rod through hole (1502) is located outside the positioning rod through hole (1501).

13. The sealing cover plate according to claim 10, characterized in that, The top rod perforation (1502) is misaligned with the annular sealing structure.

14. A plug, comprising a bent housing, the bent housing comprising a plug-in section (10) and a wiring section (11), one end of the plug-in section (10) being a plug-in end, and the other end having a disassembly opening (12), wherein a sealing cover (15) is installed at the disassembly opening (12), characterized in that, The sealing cover (15) is the sealing cover (15) according to any one of claims 1-13.

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