Labyrinth type waterproof sealing wire clamp

Abstract

The invention relates to the technical field of detonator wire connectors, in particular to a labyrinth type waterproof sealing wire clamp, which comprises an upper cover and a lower cover, the lower cover comprises a lower foundation plate, the top surface of the lower foundation plate is provided with a square lower frame body, the upper edge of the lower frame body is provided with a lower wire slot, and the top surface of the lower foundation plate is provided with a first positioning column; the upper cover is provided with an upper foundation plate, the bottom surface of the upper foundation plate is provided with a square upper frame body, the lower edge of the upper frame body is provided with an upper wire groove, and the bottom surface of the upper foundation plate is provided with a second positioning column; the second positioning column is consistent with the lower wire slot in shape, and the first positioning column is consistent with the upper wire slot in shape; when the upper cover and the lower cover are buckled, the second positioning column is inserted and matched in the lower wire groove, and the first positioning column is inserted and matched in the upper wire groove. The waterproof sealing wire clamp has an excellent waterproof effect, and water outside the wire clamp can be prevented from entering the area of the metal elastic sheet of the wire clamp for a long time.

Description

Technical Field

[0001] The present invention relates to the technical field of detonator connectors, and particularly to a labyrinth waterproof and sealed wire clamp. Background Art

[0002] Traditional wire clamps generally adopt a structure in which an upper cover and a lower cover are buckled with each other. After the upper cover and the lower cover are fixedly buckled with each other, the built-in metal elastic sheet is used for electrical contact with the cables at the command end and the execution end. Generally, wire clamps do not have a waterproof function. Some existing wire clamps are designed with a waterproof function, but this waterproof function is relatively simple and can only achieve a basic waterproof effect. However, detonator detonation is carried out underground. In some cases, the working environment of the wire clamp is relatively complex. Therefore, a wire clamp that can be strictly waterproof is designed. Summary of the Invention

[0003] To solve the above problems, the present invention proposes a labyrinth waterproof and sealed wire clamp, which has an excellent waterproof effect and can resist the water outside the wire clamp from entering the area of the metal elastic sheet of the wire clamp for a long time.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] The labyrinth waterproof and sealed wire clamp includes an upper cover and a lower cover. The lower cover includes a lower base plate. The top surface of the lower base plate has a "mouth"-shaped lower frame body. The upper edge of the lower frame body is provided with a lower wire groove. The top surface of the lower base plate is provided with a first positioning post, which is aligned with the position of the upper wire groove.

[0006] The upper cover has an upper base plate. The bottom surface of the upper base plate has a "mouth"-shaped upper frame body. The lower edge of the upper frame body is provided with an upper wire groove. The bottom surface of the upper base plate is provided with a second positioning post, which is aligned with the position of the upper wire groove.

[0007] The second positioning post has the same shape as the lower wire groove, and the first positioning post has the same shape as the upper wire groove. When the upper cover and the lower cover are buckled, the second positioning post is inserted and fitted into the lower wire groove, and the first positioning post is inserted and fitted into the upper wire groove.

[0008] Preferably, the bottom of the lower wire groove and the upper wire groove, and the tops of the first positioning post and the second positioning post all have a curved surface supporting structure adapted to the outer diameter of the wire.

[0009] Preferably, the ends of the second positioning post and the first positioning post are not in the same plane.

[0010] Preferably, both the first wire groove and the second wire groove are trapezoidal or trapezoid-like grooves.

[0011] Preferably, there are M groups of the lower frame and the second positioning columns, and M+1 groups or M-1 groups of the upper frame and the first positioning columns, and when the upper cover and the lower cover are buckled, the lower frame and the upper frame are alternately arranged.

[0012] Preferably, when the upper cover and the lower cover are buckled together, the upper frame and the lower frame are spaced apart, and the spacing between adjacent upper frame and lower frame matches the diameter of the wire.

[0013] Preferably, the upper cover and the lower cover are hinged at the rear, the front of the lower cover has a groove-shaped buckle-connecting portion, and the buckle-connecting portion has a front positioning platform;

[0014] The front part of the upper cover is provided with an elastic connecting piece, and the elastic connecting piece is provided with a front positioning groove;

[0015] When the upper cover and the lower cover are buckled together, the elastic connecting piece is placed on the buckle clamping portion, and the front positioning platform is inserted into and matched with the inner wall of the front positioning groove.

[0016] Preferably, the top surface of the front positioning platform has a first table surface, and the interior of the front positioning groove has a second table surface;

[0017] When the front positioning platform is inserted into and matched with the inner wall of the front positioning groove, the first platform surface and the second platform surface are in contact with each other.

[0018] Preferably, the connection between the elastic connecting piece and the upper base plate has a transition connection portion, and the transition connection portion includes a plane structure opened toward the lower cover;

[0019] When the upper cover and the lower cover are buckled together, the planar structure of the transition connection portion matches with the top surface of the front wall of the outermost lower frame.

[0020] The beneficial effects of using the present invention are:

[0021] This waterproof sealing wire card has a basic structure through the upper frame of the upper cover and the lower frame of the lower cover, and the first positioning column and the second positioning column are correspondingly set at the positions of the upper wire groove and the lower wire groove. When the upper cover and the lower cover are buckled, the positioning column is inserted into the corresponding wire groove of the frame, so that the parts of the upper cover and the lower cover that contact the wire form a multi-layer maze-like sealing structure, and this sealing structure has good waterproof performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is an axonometric view of the labyrinth waterproof sealing line card of the present invention in an open state.

[0023] Figure 2 It is a side view of the closed state of the labyrinth waterproof sealing line card of the present invention.

[0024] Figure 3 for Figure 2Cross-sectional view along AA direction.

[0025] Reference numerals include:

[0026] 10-lower cover, 11-lower base plate, 12-first frame, 121-first wire slot, 122-front plate, 1221-wire inlet slot, 13-second frame, 14-third frame, 15-first positioning column, 16-front positioning platform, 161-first table top, 17-snap-locking portion, 18-metal spring installation structure;

[0027] 20-upper cover, 21-upper base plate, 22-fourth frame, 221-second wire slot, 23-second positioning column, 24-transition connection part, 25-elastic connecting piece, 251-front positioning groove, 2511-second table top, 26-connecting buckle;

[0028] 30 - hinged structure, 31 - first space, 32 - second space, 33 - third space. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the technical solution more clear, the technical solution is further described in detail below in conjunction with specific implementation methods. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the technical solution.

[0030] To solve the problem of poor waterproof performance of line cards in the prior art, such as Figure 1 As shown, this embodiment provides a labyrinth-type waterproof sealing line card.

[0031] like Figure 1 As shown, the labyrinth waterproof sealing wire clamp in this embodiment includes a lower cover 10, an upper cover 20 and a hinge structure 30. The upper cover 20 and the lower cover 10 in this embodiment are connected by the hinge structure 30 at the rear of both, and the upper cover 20 can be buckled on the lower cover 10 after rotating the upper cover 20. In other embodiments, the connection method of the upper cover 20 and the lower cover 10 is not limited to the hinge structure 30 proposed in this embodiment. For example, the upper cover 20 and the lower cover 10 are connected to each other through front and rear buckle structures, or the upper cover 20 and the lower cover 10 are hinged through an integral injection-molded connection structure.

[0032] In this embodiment, the basic structure of the lower cover 10 is as follows: the bottom of the lower cover 10 is a flat lower base plate 11, and the main area of ​​the lower base plate 11 is a multi-layer sealing structure. Specifically, the outermost side of the lower base plate 11 is a "mouth"-shaped first frame 12, and the first frame 12 is a plate structure with a certain extension height. The lower base plate 11 of the first frame 12 is integrally injection molded. Two first wire grooves 121 are respectively provided on both sides of the left side of the top surface of the first frame 12, and an inlet groove 1221 is provided at the front plate 122 of the first frame 12. Inside the first frame 12, there are a second frame 13 and a third frame 14, which are similar in structure to the first frame 12, but the enclosed area is smaller than that of the first frame 12. Since the second frame 13 and the third frame 14 are fixedly divided, the front of the second frame 13 and the third frame 14 also has a first wire groove 121. The side panels of the second frame 13 and the third frame 14 also have first wire grooves 121, and the first wire grooves 121 on the side panels of the first frame 12, the second frame 13 and the third frame 14 are aligned. A first positioning column 15 is also provided between the first frame 12 and the second frame 13, and between the second frame 13 and the third frame 14, that is, a first positioning column 15 is provided between each two opposite first wire grooves 121. In this embodiment, the height of the end of the first positioning column 15 is slightly higher than the position of the bottom of the first wire groove 121. That is, a first space 31 is formed between the first frame 12 and the second frame 13, and between the second frame 13 and the third frame 14. A second space 32 is formed inside the innermost third frame 14. The first space 31 is used to cooperate with the upper cover 20 to form a sealing structure, and the inside of the second space 32 is used to set a metal spring installation structure 18, which is used to install a metal spring.

[0033] In the upper cover 20, similar to the lower cover 10, the upper cover 20 includes a planar upper base plate 21, and two "mouth"-shaped fourth frames 22 are arranged on the bottom surface of the upper base plate 21. A second wire groove 221 is opened on the lower edge of the fourth frame 22, and second positioning columns 23 are arranged on the outer side and inner side of the upper base plate 21 corresponding to the second wire groove 221.

[0034] In this embodiment, since there are 6 first wire grooves 121 on the left side of the lower cover 10, the corresponding number of second positioning columns 23 of the upper cover 20 is 6. There are 4 second wire grooves 221 in the upper cover 20, and the corresponding number of first positioning columns 15 is 4.

[0035] like Figure 2 and Figure 3As shown, when the upper cover 20 and the lower cover 10 are buckled, the top surfaces of the first frame 12, the second frame 13 and the third frame 14 are all matched with the bottom surface of the upper base plate 21 of the upper cover 20; similarly, the bottom surfaces of the two fourth frames 22 are all matched with the top surface of the lower base plate 11 of the lower cover 10, thus forming a labyrinth seal structure of the main body. At the same time, since the second positioning column 23 is inserted into the first wire groove 121, and the first positioning column 15 is inserted into the second wire groove 221, a five-layer labyrinth seal structure is formed at the position where the wire passes through.

[0036] Preferably, the bottom of the lower and upper wire troughs, and the tops of the first positioning column 15 and the second positioning column 23 all have a curved support structure that matches the outer diameter of the wire. After the wire is placed, the bottom of the lower and upper wire troughs, and the tops of the first positioning column 15 and the second positioning column 23 are interference fit with the wire, so that the bottom of the lower and upper wire troughs, and the tops of the first positioning column 15 and the second positioning column 23 clamp the wire. At this point, a five-layer sealing structure is formed at the position where the wire passes through.

[0037] Furthermore, the ends of the second positioning pillars 23 and the first positioning pillars 15 are not in the same plane. After the wires are placed, the five-layer sealing structure corresponding to the wires further forms a five-layer sealing structure similar to a rectangular wave, that is, a labyrinth sealing structure.

[0038] Furthermore, the first wire groove 121 and the second wire groove 221 are both trapezoidal or quasi-trapezoidal grooves. The trapezoidal or quasi-trapezoidal grooves have two advantages. The first advantage is that it is convenient to place the wire in the groove. The second advantage is that since the upper cover 20 and the lower cover 10 are hinged at the rear in this embodiment, the trapezoidal or quasi-trapezoidal grooves can avoid the corresponding first positioning columns 15 and the second positioning columns 23 from interfering with the corresponding frame during the process of entering the corresponding groove body.

[0039] Preferably, there are M groups of the lower frame and the second positioning column 23, and M+1 groups or M-1 groups of the upper frame and the first positioning column 15, and when the upper cover 20 and the lower cover 10 are buckled, the lower frame and the upper frame are alternately arranged. In this embodiment, there are 3 lower frames and 2 upper frames. In other embodiments, different numbers of upper frames and lower frames can be adapted according to actual needs.

[0040] In order to further seal the wire through the place, when the upper cover 20 and the lower cover 10 are buckled, the upper frame and the lower frame are spaced apart, and the spacing between the adjacent upper frame and the lower frame matches the diameter of the wire. That is, a third space 33 is formed between the side walls corresponding to the adjacent upper frame and the lower frame, and the side walls corresponding to the adjacent upper frame and the lower frame can clamp the wire. Since the outer skin of the wire has a certain elasticity and the inside of the wire is a metal wire core, this design can form a certain degree of sealing by utilizing the elasticity of the outer skin of the wire.

[0041] like Figure 1 As shown, since no wires need to be threaded at the upper cover 20 and the lower cover 10 corresponding to the first frame 12, the second frame 13, the third frame 14 and the two-layer fourth frame 22, only a plate gate sealing structure is required at the upper cover 20 and the lower cover 10 near the tail.

[0042] The main line needs to be introduced at the front of the upper cover 20 and the lower cover 10, and the main line is divided into two sub-wires. The upper cover 20 and the lower cover 10 are hinged at the rear, and the front of the lower cover 10 has a groove-shaped buckle-type clamping part 17, and the buckle-type clamping part 17 has a front positioning platform 16; the front of the upper cover 20 has an elastic connecting piece 25, and the elastic connecting piece 25 has a front positioning groove 251; when the upper cover 20 and the lower cover 10 are buckled, the elastic connecting piece 25 is placed on the buckle-type clamping part 17 and connected by the connecting buckle 26, and the front positioning platform 16 is inserted and matched with the inner wall of the front positioning groove 251. The front positioning platform 16 and the front positioning groove 251 are used to fix the main line, and both the front positioning platform 16 and the front positioning groove 251 have curved surfaces, corresponding to clamping the main line.

[0043] The top surface of the front positioning platform 16 has a first platform 161, and the interior of the front positioning groove 251 has a second platform 2511; when the front positioning platform 16 is inserted and matched with the inner wall of the front positioning groove 251, the first platform 161 and the second platform 2511 fit together to form a sealing structure. At the same time, the outer wall of the front positioning platform 16 fits with the inner wall of the front positioning groove 251 to form a sealing structure.

[0044] Preferably, the connection between the elastic connecting piece 25 and the upper base plate 21 has a transition connection portion 24, and the transition connection portion 24 includes a planar structure opened toward the lower cover 10; when the upper cover 20 and the lower cover 10 are buckled together, the planar structure of the transition connection portion 24 cooperates with the top surface of the front wall of the outermost lower frame to form a sealing structure.

[0045] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, many changes can be made in the specific implementation methods and application scopes based on the ideas of the present technical content. As long as these changes do not deviate from the concept of the present invention, they all fall within the scope of protection of this patent.

Claims

1. A labyrinth type waterproof sealing line card, comprising an upper cover and a lower cover, characterized in that: The lower cover comprises a lower base plate, the top surface of the lower base plate has a "mouth"-shaped lower frame, the upper edge of the lower frame is provided with a lower wire groove, the top surface of the lower base plate is provided with a first positioning column, and the first positioning column is aligned with the position of the upper wire groove; The upper cover has an upper base plate, the bottom surface of the upper base plate has an upper frame body in the shape of a "mouth", the lower edge of the upper frame body is provided with an upper wire groove, and the bottom surface of the upper base plate is provided with a second positioning column, and the second positioning column is aligned with the position of the upper wire groove; The second positioning column is consistent with the shape of the lower wire groove, and the first positioning column is consistent with the shape of the upper wire groove; when the upper cover and the lower cover are buckled, the second positioning column is inserted into and matched with the lower wire groove, and the first positioning column is inserted into and matched with the upper wire groove.

2. The labyrinth waterproof sealing line card according to claim 1, characterized in that: The bottoms of the lower wire trough and the upper wire trough, and the tops of the first positioning column and the second positioning column all have curved surface supporting structures that are adapted to the outer diameter of the wire.

3. The labyrinth waterproof sealing line card according to claim 1, characterized in that: The end of the second positioning post and the end of the first positioning post are not in the same plane.

4. The labyrinth waterproof sealing line card according to claim 1, characterized in that: The first wire trough and the second wire trough are both trapezoidal or quasi-trapezoidal troughs.

5. The labyrinth waterproof sealing line card according to claim 1, characterized in that: The lower frame and the second positioning column are in M ​​groups, the upper frame and the first positioning column are in M+1 groups or M-1 groups, and when the upper cover and the lower cover are buckled, the lower frame and the upper frame are arranged alternately.

6. The labyrinth waterproof sealing line card according to claim 1, characterized in that: When the upper cover and the lower cover are buckled, the upper frame and the lower frame are spaced apart, and the spacing between adjacent upper frame and lower frame matches the diameter of the wire.

7. The labyrinth waterproof sealing line card according to any one of claims 1 to 6, characterized in that: The upper cover and the lower cover are hinged at the rear, the front of the lower cover has a groove-shaped buckle clamping part, and the buckle clamping part has a front positioning platform; The front part of the upper cover is provided with an elastic connecting piece, and the elastic connecting piece is provided with a front positioning groove; When the upper cover and the lower cover are buckled together, the elastic connecting piece is placed on the buckle clamping portion, and the front positioning platform is inserted into and matched with the inner wall of the front positioning groove.

8. The labyrinth waterproof sealing line card according to claim 7, characterized in that: The top surface of the front positioning platform has a first platform surface, and the interior of the front positioning groove has a second platform surface; When the front positioning platform is inserted into and matched with the inner wall of the front positioning groove, the first platform surface and the second platform surface are in contact with each other.

9. The labyrinth waterproof sealing line card according to claim 7, characterized in that: The connection between the elastic connecting piece and the upper base plate has a transition connection portion, and the transition connection portion includes a plane structure opened toward the lower cover; When the upper cover and the lower cover are buckled together, the planar structure of the transition connection portion matches the top surface of the front wall of the outermost lower frame.

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