A waterproof wiring terminal block

Abstract

The application relates to an electric connector technology and discloses a waterproof wiring terminal seat which comprises a shell and a terminal seat arranged in the shell, the terminal seat is provided with a terminal group, the shell is provided with a receiving cavity with an opening facing a lower surface and a wire tail extending outwards in an inclined mode, the terminal seat is provided with a main body arranged in the receiving cavity, a terminal groove for arranging the terminal group is arranged on a lower surface of the main body, the terminal group is composed of a plurality of terminals, each terminal is provided with a fixing part matched with the terminal groove, flaps are arranged on both sides of the fixing part, and a tongue part is protruded outward from an edge of a head part of the flap; a clamping table matched with the number of the terminals is arranged on a front surface of the main body, the clamping table is adjacent to the terminal groove, each terminal is arranged in the terminal groove, and the tongue part is clamped on an end surface of the clamping table. Through the technical scheme, the technical problems of waterproofing and assembly damage prevention are solved, and the effects of improving quality and reducing cost are realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of connectors, and particularly provides a waterproof terminal block. BACKGROUND

[0002] The terminal block is a kind of connector, which comprises a shell, a terminal and a terminal fixing seat, the terminal fixing seat is provided with a terminal groove, and the terminal fixing part is arranged in the terminal groove and fixed by abutting against the inner wall of the terminal groove. Since the terminal fixing part generally has multiple sharp spikes to forcibly interfere with the inner wall of the terminal groove, it is easy to cause damage, which affects the product quality. In view of the defects, it is necessary to provide an improved waterproof terminal block to overcome the above problems. SUMMARY

[0003] The present application aims at overcoming the defects of the prior art, and provides a waterproof terminal block to solve the technical problem of waterproof sealing.

[0004] In order to solve the above technical problems, the present application adopts the following technical scheme:

[0005] Disclosed is a waterproof terminal block, which comprises a shell and a terminal block arranged in the shell, wherein: the terminal block is provided with a terminal group, the shell is provided with a receiving cavity with an opening facing the lower surface and a wire tail extending outwardly and obliquely on the outside, the terminal block is provided with a main body arranged in the receiving cavity, the main body is provided with a terminal groove on the lower surface for arranging the terminal group, the terminal group is composed of multiple terminals, each terminal is provided with a fixing part matched with the terminal groove, the fixing part is provided with a wing plate on each side, and the head edge of the wing plate is provided with a tongue part outwardly protruding; the front surface of the main body is provided with a clamping table matched with the number of terminals, the clamping table is adjacent to the terminal groove, each terminal is arranged in the terminal groove, and the tongue part is clamped on the end surface of the clamping table.

[0006] In the example, the shell is a box body, a pair of rib blocks are arranged on the inner wall surface of the receiving cavity relative to the outer wall surface of the box body, and elastic arms are arranged on the two side surfaces of the main body relative to the rib blocks of the receiving cavity and interfere with each other, and the outer side surface of the elastic arm is provided with a rib strip interfering with the rib blocks.

[0007] In the example, the elastic arm is a U-shaped structure.

[0008] In the example, a row of square blocks are vertically arranged on the upper surface of the main body close to the front edge, a plurality of partition plates are extended from the lower surface of the main body, the terminal groove comprises a wide groove and a narrow groove, the wide groove is located in the main body, and the narrow groove is connected with the wide groove and extended on the wall surface of the square block.

[0009] In the example, the fixing part is arranged in the wide groove, the bottom end of the fixing part is vertically extended outwardly to form a wiring part, the free segments of the two wing plates are extended in a retracted form to form a contact part, and the contact part is in the narrow groove.

[0010] In the example, the wiring part is provided with a cable clamping piece, and the contact part is a guide socket formed by the two wing plates.

[0011] In the present example, the box body has ears on both sides, and the ears are provided with ear holes.

[0012] In the present example, the wire tail has a plug cavity, the wire tail is formed with a plurality of elastic pieces surrounding the wire tail, and an external thread is formed between the root of the wire tail and the roots of the plurality of elastic pieces.

[0013] In the present example, further comprising a tail cap and a compression ring adapted to the plug cavity, the compression ring has a hole for the cable to pass through, the cable is connected with the terminal through the hole of the compression ring, and the tail cap has an internal thread adapted to the external thread.

[0014] In the present example, further comprising a sealing ring, the sealing ring is embedded in the frame-shaped groove in a filling form and partially protrudes from the lower surface of the shell.

[0015] After adopting the above technical scheme, the present application has the following beneficial effects compared with the prior art:

[0016] The prior art uses a plurality of sharp spikes provided on the edge of the fixing portion to forcibly interfere with the inner wall surface of the terminal groove and achieve non-backout, and the plurality of terminal groups are all fixed by forcibly interfering, which causes excessive internal stress and easily damages the terminal seat of the terminal group. The present application reduces the internal stress of the terminal to damage the terminal seat by buckling the tongue portion of the terminal group with the end surface of the clamping table, and also prevents the terminal group from being easily withdrawn from the terminal groove. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above features, technical characteristics, advantages and implementation modes of the present application will be further described in a clear and understandable manner in combination with the preferred embodiments and the accompanying drawings.

[0018] Figure 1 is a perspective exploded view of an embodiment of the present application;

[0019] Figure 2 is a perspective exploded view of an embodiment of the present application from another angle;

[0020] Figure 3 is a perspective view of the shell of an embodiment of the present application;

[0021] Figure 4 is a perspective view of the terminal group of an embodiment of the present application;

[0022] Figure 5 is a perspective view of part of the terminal group assembled in the terminal seat in an embodiment of the present application;

[0023] Figure 6 is a perspective view of an embodiment of the present application after complete assembly;

[0024] Figure 7 is another angle perspective view of an embodiment of the present application after complete assembly;

[0025] Figure 8 is Figure 7 a plan view; and

[0026] Figure 9 is Figure 8 a sectional view in the direction of A-A.

[0027] Brief Description of the Drawings: 100 waterproof terminal block, 1 housing, 11 box body, 12 wire tail, 121 plug cavity, 122 elastic sheet, 123 external thread, 13 receiving cavity, 131 rib block, 14 frame-shaped groove, 15 ear part, 151 ear hole, 2 terminal block, 21 main body, 22 elastic arm, 221 rib, 23 clamping table, 24 square block, 241 wide groove, 242 narrow groove, 25 partition plate, 3 terminal group, 31 fixed part, 311 tongue part, 32 wiring part, 321 clamping sheet, 33 contact part, 34 guide socket, 4 sealing ring, 5 tail cap, 6 compression ring. DETAILED DESCRIPTION

[0028] In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular architectures, technologies, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application can be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

[0029] It is to be understood that the terminology "including," "includes," "has," and / or "has" used herein indicates the presence of stated features, integers, steps, operations, elements, and / or components but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0030] For the purpose of clarity, not all of the routine features of the implementations described herein are shown. It will further be appreciated that, for simplicity and clarity, the drawings figure herein depict only those aspects of the application with which familiarity can be achieved in understanding the application.

[0031] It should also be further understood that the term "and / or" used in the application description and the appended claims herein is used to mean one or more of the associated listed items, as well as all possible combinations of the items.

[0032] In the embodiments shown in the drawings, the indications of directions, such as up, down, left, right, front and back, are used to explain the structure and movement of various components of the present application, and are not absolute but relative. When these components are in the positions shown in the drawings, these indications are appropriate. If the positions of these components change, the indications of directions also change accordingly.

[0033] In addition, in the description of the present application, the terms "first", "second", and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the specific embodiments of the present application will be described below with reference to the drawings. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor, and other embodiments can also be obtained.

[0035] Please refer to Figures 1 to 9 As shown in the drawings, the waterproof terminal block 100 of the present application comprises a shell 1, a terminal block 2 arranged in the shell 1, a terminal group 3 fixedly installed in the terminal block 2, a tail cap 5 arranged at the outlet end of the shell 1, a sealing ring 4 installed on the shell 1, and a compression ring 6 for extruding the cable. The waterproof terminal block 100 of the present application is adapted to a male connector (not shown).

[0036] Specifically, the shell 1 is injection molded, and the shell 1 comprises a box body 11 and a wire tail 12. The box body 11 is recessed with a receiving cavity 13 from the lower surface. A pair of rib blocks 131 are arranged on the inner wall surface of the receiving cavity 13 opposite the outer wall surface of the box body 11. A frame-shaped groove 14 for filling the sealing ring 4 is arranged around the periphery of the receiving cavity 13 on the lower surface of the box body 11. Fixed lugs 15 are respectively extended and protruded from the two side surfaces of the box body 11 and parallel to the lower surface of the box body 11. The fixed lugs 15 are provided with lug holes 151. The fixed lugs 15 facilitate the connection and fixation of the waterproof terminal block 100 on another machine body shell, and are locked and fixed with the other machine body shell by means of bolts passing through the lug holes 151. The wire tail 12 is extended and obliquely protruded from the front surface of the box body 11. The wire tail 12 is provided with a plug cavity 121 for cable insertion and is in communication with the box body 11, facilitating the entry of the cable into the receiving cavity 13. A plurality of elastic pieces 122 are arranged around the head of the wire tail 12. An external thread 123 is arranged adjacent to the plurality of elastic pieces 122.

[0037] The terminal seat 2 is installed in the connecting shell 1, and has a main body 21 matched with the accommodating cavity 13. The two side surfaces of the main body 21 are provided with elastic arms 22 interfered by the rib blocks 131 in the accommodating cavity 13. The outer side surfaces of the elastic arms 22 are provided with rib strips 221 interfered by the rib blocks 131, so that the terminal seat 2 and the accommodating cavity 13 are stably connected. The elastic arm 22 is in a U-shaped structure, which is in a retracted state when the terminal seat 2 is assembled in the accommodating cavity 13, and is outwardly expanded after assembly to provide elastic force, so that the terminal seat 2 and the accommodating cavity 13 are more stably connected. The front surface of the main body 21 is provided with a plurality of clamping tables 23. The upper surface of the main body 21 is provided with a row of square blocks 24 vertically protruding from the front edge. The lower surface of the main body 21 is provided with a plurality of terminal grooves (not shown) for mounting and fixing the terminal groups 3. The clamping tables are adjacent to the terminal grooves. The terminal grooves include a wide groove portion 241 located in the main body 21 and a narrow groove portion 242 extending to the wall surface of the square block 24. In addition, the lower surface of the main body 21 is provided with a plurality of partition plates 25.

[0038] The terminal groups 3 are the same in structure. The terminal groups 3 are assembled in the terminal grooves of the terminal seat 2. The terminal groups 3 include a fixed part 31 mounted and fixed in the wide groove 241, a wiring part 32 located between the partition plates 25, and a pair of contact parts 33 inserted into the narrow groove 242. The wiring part 32 extends outward from the bottom end of the fixed part 31 and is perpendicular to the fixed part 31. The wiring part 32 is provided with cable clamping pieces 321. The pair of contact parts 33 extend upward from the two side flaps of the fixed part 31 to form a spade structure. The top end of the pair of contact parts 33 forms a guide socket 34 for inserting the PIN. The head edges of the two side flaps of the fixed part 31 are outwardly provided with tongue parts 311. When the terminal groups 3 are assembled in the terminal grooves of the terminal seat 2, the fixed part 31 is stably matched with the wide groove 241, and the surface of the tongue part 311 is clamped on the clamping table 23. The terminal groups 3 are not easy to be taken out of the terminal grooves. Compared with the prior art, the prior art is provided with a plurality of sharp spikes on the edges of the two side flaps of the terminal fixed part. The plurality of sharp spikes are used to interfere with the inner wall of the terminal groove to be fixed and not to be taken out. However, the internal stress of the terminal groups is too large, and the plastic parts of the terminal groups are easily damaged.

[0039] The waterproof wiring terminal seat 100 further includes a compression ring 6 for locking the cable, which is inserted into the cable through the plug cavity 121 of the cable tail 12. The tail cap 5 is locked and fixed on the shell 1 through the inner thread and the outer thread of the cable tail 12.

[0040] In the above embodiments, the description of each embodiment has its own focus. The parts not described or recorded in detail in a certain embodiment can be referred to the related description of other embodiments.

[0041] It should be noted that the above embodiments can be freely combined as desired. The above are only preferred embodiments of the present application, and it should be pointed out that, for those skilled in the art, several improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be considered as falling within the scope of protection of the present application.

Claims

1. A waterproof terminal block comprising a housing and a terminal block disposed within the housing, characterized in that: The terminal block is provided with a terminal group, the shell has a receiving cavity with an opening toward the lower surface and a wire tail extending obliquely outward, the terminal block has a main body arranged in the receiving cavity, a row of alternating squares are upright on the upper surface of the main body near the front edge, and a terminal slot for the terminal group is provided on the lower surface of the main body, the terminal group is composed of a plurality of terminals, each terminal has a fixed portion adapted to the terminal slot, and wings are respectively provided on both sides of the fixed portion, the free section of the wing extends in an inwardly retracted form to form a contact portion, and a tongue protrudes outward from the edge of the wing head; the front surface of the main body has a card table that matches the number of terminals, the card table is adjacent to the terminal slot, and each terminal is arranged in the terminal slot, wherein the terminal slot includes a wide slot and a narrow slot, the fixed portion is arranged in the wide slot and the bottom end of the fixed portion extends vertically outward to form a wiring portion, the contact portion is in the narrow slot, and the tongue is snap-fitted to the end face of the card table.

2. The waterproof terminal block according to claim 1, characterized in that: The shell is a box body, and a pair of ribs are provided on the inner wall of the receiving cavity opposite to the outer wall of the box body. Interfering elastic arms are provided on both sides of the main body opposite to the ribs of the receiving cavity, and the outer sides of the elastic arms have ribs that interfere with the ribs.

3. The waterproof terminal block according to claim 2, characterized in that: The elastic arm is a U-shaped structure.

4. The waterproof terminal block according to claim 1, wherein: Several partitions extend from the lower surface of the main body, the wide groove is located in the main body, and the narrow groove is connected to the wide groove and extends to the wall of the block.

5. The waterproof terminal block according to claim 1, wherein: The wiring part is provided with a cable clamping piece; the contact part is a guide socket composed of two wings.

6. The waterproof terminal block according to claim 1, characterized in that: Both sides of the box body are provided with ears, and the ears are provided with ear holes.

7. The waterproof terminal block according to claim 1, characterized in that: The wire tail has a plug cavity, a plurality of spring pieces surrounding the wire tail are formed on the wire tail, and an external thread is formed between the root of the wire tail and the roots of the plurality of spring pieces.

8. The waterproof terminal block according to claim 7, characterized in that: It further includes a tail cap and a compression ring adapted to the plug cavity, the compression ring has a hole for the cable to pass through, the cable is connected to the terminal through the compression ring hole, and the tail cap has an internal thread adapted to the external thread.

9. The waterproof terminal block according to claim 1, characterized in that: The invention further comprises a sealing ring which is embedded in the frame-shaped groove in a filling form and partially protrudes from the lower surface of the shell.

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