CN110635301B

CN110635301B - Knife type waterproof connector

Info

Publication number: CN110635301B
Application number: CN201810641765.1A
Authority: CN
Inventors: 赖柄源; 赖启益; 张忠仁
Original assignee: Avertronics Inc
Current assignee: Avertronics Inc
Priority date: 2018-06-21
Filing date: 2018-06-21
Publication date: 2020-12-18
Anticipated expiration: 2038-06-21
Also published as: CN110635301A

Abstract

The invention relates to a knife-type waterproof connector, which comprises: the first terminal of the second connecting piece is connected with the second terminal of the second connecting piece to form electric conduction, the second connecting piece is provided with a base at one end, the base is convexly provided with a frame body, an accommodating space is formed by the frame body in a surrounding mode, the frame body is symmetrically provided with a buckling groove at two opposite sides, the second terminal is convexly provided with a pin towards the accommodating space, a cover plate is arranged in the accommodating space, two ends of the cover plate are convexly provided with buckling blocks for buckling the buckling groove, the inner concave portion of the outer peripheral edge of the cover plate is provided with a first filling groove, a gap formed at the first filling groove is filled with a hot melt adhesive layer, and the hot melt adhesive layer is filled around the pin, so that the effects of easy assembly and effective water prevention are achieved.

Description

Knife type waterproof connector

Technical Field

The present invention relates to a circuit connector, and more particularly, to a waterproof connector with a blade structure, which is easy to assemble and is waterproof.

Background

When various electronic devices need to connect various circuits such as power supply or signal, a male terminal connector and a female terminal connector are usually fixed at two ends of an electric wire respectively, and then the male terminal connector and the female terminal connector are quickly plugged to form an electrical link, however, the connector is a part of the whole circuit which is relatively easy to be broken down due to water logging or dampness, many electronic devices are used in outdoor, humid or large temperature change environments, even in motion states, the connector has very high requirements on waterproof function, and the stability of electrical connection is one of the main requirements, many manufacturers develop connectors with waterproof function, the waterproof connector is usually provided with a gasket or a gasket at the joint of a shell and an outer cover, so as to block the gap formed at the joint and enable the exterior and the interior of the connector to form a basic blocking waterproof effect, however, the above known structure can not be found to have some disadvantages, mainly because the following reasons: the gasket or washer is first set inside the connector and the outer cover is assembled onto the casing in locking mode to clamp the gasket or washer with the casing, however, when the cover is locked, the gasket or washer is not smoothly clamped in the connector because of different extrusion forces generated by the force application point and the non-force application point, the gap generated by unevenness will reduce the waterproof effect of the connector, and furthermore, even if the connector is assembled and tested to meet the waterproof performance required by the connector, the gasket or washer may lose the waterproof function after long-term use or when expanding with heat and contracting with cold due to elastic fatigue or contraction, meanwhile, the assembly method has a plurality of steps, and the relative position is not easy to fix during assembly, so that the reject ratio is improved and the waterproof performance is reduced, and the technical problems of difficult assembly and insufficient waterproof effect exist in the conventional connector for a long time.

In view of the above, the present inventors have made various experiments on the manufacturing, development and design of related products for many years, and have made detailed design and careful evaluation to achieve the above objectives, and finally have obtained a practical invention.

Disclosure of Invention

The present invention provides a waterproof connector of the guillotine type, which is designed to solve the above-mentioned problems of the prior art.

The invention provides a knife type waterproof connector, which comprises a first connecting piece and a second connecting piece, wherein the first connecting piece is provided with a plurality of first terminals, a connecting seat is formed at one end of the second connecting piece, the connecting seat is in a right-angle shape, a plurality of L-shaped grooves are formed in the connecting seat, a second terminal is fixed in each L-shaped groove, the first connecting piece and the second connecting piece are electrically communicated through the mutual connection of the first terminal and the second terminal, a base is formed at the other end of the second connecting piece, a butt joint surface is formed on one surface of the base facing the connecting seat, an assembling surface is formed on one surface of the base opposite to the butt joint surface, a frame body is convexly arranged on the assembling surface, an accommodating space communicated with the L-shaped grooves is formed by surrounding the frame body, buckling grooves are symmetrically formed at two opposite sides of the frame body, and a pin is convexly arranged on the second terminal in the accommodating space, the pin is abutted against the frame body and extends out of the base, a cover plate is arranged in the containing space of the second connecting piece, two ends of the cover plate are respectively provided with a buckling block in a protruding mode, the buckling blocks are clamped in the buckling grooves, the pin is clamped between the frame body and the cover plate, a first filling groove is formed in the inner concave portion of the outer periphery of the cover plate, a gap formed in the first filling groove is filled with a hot melt adhesive layer, and the periphery of the pin is filled with the hot melt adhesive layer.

The inner edge of the frame body of the second connecting piece is concavely provided with a second packing groove, the second packing groove can be matched with the first packing groove to surround the pin, and the thickness of the hot melt adhesive layer around the pin is the same as the depth of the groove bottom of the first packing groove and the depth of the groove bottom of the second packing groove.

The second connecting piece is provided with a limiting notch between every two adjacent pins, the edge of the cover plate is convexly provided with a plurality of pressing blocks, the first filling groove is arranged on the periphery of each pressing block in a spanning mode, the pressing blocks are accommodated in the limiting notch in a matching mode, and the pins penetrate through the surface of the hot melt adhesive layer of the cover plate and are clamped between every two adjacent pressing blocks.

The connecting seat is provided with a partition board between two adjacent L-shaped grooves, the partition board extends to the containing space and is provided with a bottom edge part, one surface of the cover board facing the containing space is concavely provided with a containing groove, the containing groove extends to the pressing block, the containing groove is provided with a waterproof gasket, the waterproof gasket is pressed against the bottom edge part of the partition board, and the pin is surrounded by the waterproof gasket.

The assembly surface of the base is convexly provided with two blocks, the blocks are connected with the frame body to form structural reinforcement for the frame body, the buckling groove is inwards concave in the blocks, and the buckling groove does not penetrate through the frame body.

Wherein, this base holds and is equipped with two internal thread covers, and the butt joint surface of this base is seted up to the one end of this internal thread cover, and the other end of this internal thread cover extends inside this block, and this block forms the stable combination of this internal thread cover and this base.

The first connecting piece is combined with a sealing piece, the sealing piece is provided with a plurality of through holes, the through holes are used for the first terminals to penetrate through, the sealing piece is in a right-angle shape, a side edge block is formed on the sealing piece, and when the first terminals and the second terminals are connected mutually, the side edge block of the sealing piece is pressed against the L-shaped groove.

The second connecting piece is sleeved with a gasket at the connecting seat, the gasket is abutted against the abutting surface of the base, and the base of the second connecting piece can clamp the gasket when being assembled to the outside to form a waterproof effect.

The base seat has one ring slot in the butt surface, and the gasket has one raised ring in the inner edge for holding inside the ring slot, and the gasket has one extruding ring in the back side of the raised ring.

The second terminal is provided with two clamping pieces which are symmetrically bent inwards from the frame, the fixed end of each clamping piece, connected with the frame, is positioned at the opening of the adjacent L-shaped groove, the free end of each clamping piece is positioned at the adjacent accommodating space, and the two clamping pieces positioned in the same L-shaped groove can be clamped at the root of the first terminal.

According to the guillotine-type waterproof connector, the buckling block of the cover plate is buckled in the buckling groove of the frame body, so that the relative position of the frame body and the cover plate can be fixed through the relative buckling of the buckling block and the buckling groove, the stable covering effect during assembly is achieved, the first filling groove can be filled with the fluid hot melt adhesive layer along the space between the frame body and the cover plate, the gap between the frame body and the cover plate is further filled, meanwhile, the hot melt adhesive layer is filled and sealed around the connecting pin, and the connecting pin can be simultaneously filled and sealed through one-step processing of the hot melt adhesive layer, so that the processing steps are simplified, and the practical functions of easy filling and effective waterproofing are achieved.

According to the guillotine-type waterproof connector, the block body convexly arranged on the base can be connected with the frame body to improve the structural reinforcement of the frame body, meanwhile, the processing inner concave of the buckling groove is provided, so that the buckling groove is not influenced by the thickness of the frame body, the buckling groove can not penetrate through the frame body, the buckling groove has a waterproof effect without additional sealing, the block body can further accommodate the internal thread sleeve, and therefore the stable combination of the internal thread sleeve and the base is formed, namely, the block body can simultaneously provide the use of the buckling groove and the internal thread sleeve, and the substantial structural breakthrough is achieved.

Drawings

The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:

fig. 1 is a perspective view of the present invention.

Fig. 2 is an exploded perspective view (one) of the present invention.

Fig. 3 is an exploded perspective view (two) of the present invention.

Fig. 4 is a perspective sectional view of a second connector of the present invention.

Fig. 5 is a schematic view of the present invention before the thermal adhesive layer is sealed.

Fig. 6 is a schematic view of the present invention after the thermal adhesive layer is sealed.

Fig. 7 is a cross-sectional view of the present invention after the thermal adhesive layer has been encapsulated.

Fig. 8 is a schematic diagram (one) of the use state of the present invention.

Fig. 9 is a schematic diagram (two) of the use state of the present invention.

Fig. 10 is an exploded perspective view of another embodiment of the present invention.

Fig. 11 is a cross-sectional view of another embodiment of the present invention.

The reference numbers illustrate:

(present invention)

10 first connecting piece

11 first terminal

12 seal

121 perforation

122 side block

20 second connecting piece

21 connecting seat

211L-shaped groove

212 baffle plate

213 bottom edge

22 second terminal

221 pin

222 frame

223 clamping piece

23 base

231 abutting surface

232 assembly surface

233 block

234 internal thread sleeve

235 ring groove

236 limiting notch

24 frame body

241 space for accommodating

242 fastening groove

243 second packing groove

25 cover plate

251 fastening block

252 first packing groove

253 pressing block

254 accommodation groove

26 hot melt adhesive layer

27 shim

271 convex ring

272 extrusion ring

28 waterproof gasket

30 first component

40 second member

Detailed Description

For a further understanding and appreciation of the objects, features and effects of the invention, reference will now be made to the following detailed description of the embodiments of the invention in conjunction with the accompanying drawings:

first, as shown in fig. 1 to fig. 4, a waterproof connector of the guillotine type includes: a first connecting member 10 and a second connecting member 20, a first connecting member 10 having a plurality of first terminals 11, the first connecting member 10 combining with a sealing member 12, and the sealing member 12 having a plurality of through holes 121, and the through holes 121 providing the first terminals 11 to pass through, the sealing member 12 being right-angled, and the sealing member 12 forming a side edge block 122, a second connecting member 20 having a connecting seat 21 at one end, and the connecting seat 21 being right-angled, the connecting seat 21 having a plurality of L-shaped slots 211, and each L-shaped slot 211 having a second terminal 22 fixed therein, so that the first terminal 11 and the second terminal 22 are connected to form an electrical conduction between the first connecting member 10 and the second connecting member 20, and when the first terminal 11 and the second terminal 22 are connected, the sealing member 12 matching with the side edge block 122 pressing against the L-shaped slot 211, and the second connecting member 20 forming a base 23 at the other end, and the base 23 has a butt surface 231 on one side facing the connection seat 21, the base 23 has an assembly surface 232 on one side facing away from the butt surface 231, i.e. the butt surface 231 and the assembly surface 232 are disposed on two opposite surfaces of the base, the assembly surface 232 of the second connection member 20 is convexly provided with a frame 24, and the frame 24 is surrounded to form an accommodation space 241 communicating with the L-shaped slot 211, the frame 24 is symmetrically provided with a buckling slot 242 on two opposite sides, the assembly surface 232 of the base 23 is convexly provided with two block bodies 233, and the block 233 is connected to the frame 24 to form a structural reinforcement for the frame 24, and the buckling slot 242 is provided with an inward recess, so that the buckling slot 242 does not penetrate through the frame 24 under sufficient strength, and further providing a waterproof effect at the buckling slot 242, and the base 23 is provided with two internal thread sleeves 234, one end of the internal thread bushing 234 is opened on the abutting surface 231 of the base 23, the other end of the internal thread bushing 234 extends into the block 233, so that the block 233 forms a stable combination of the internal thread bushing 234 and the base 23, i.e. the block 233 provides the use of the fastening slot 242 and the internal thread bushing 234 at the same time, the second terminal 22 is provided with a pin 221 protruding toward the accommodating space 241, the pin 221 abuts against the frame 24 and extends out of the base 23, the second connector 20 is provided with a cover plate 25 in the accommodating space 241, and both ends of the cover plate 25 are provided with a fastening block 251 protruding, and the fastening block 251 is fastened with the fastening slot 242, so that the pin 221 is clamped between the frame 24 and the cover plate 25, the outer circumference of the cover plate 25 is recessed to form a first slot 252, and a gap formed at the first filler slot 252 is sealed with a hot melt adhesive layer 26, meanwhile, the hot melt adhesive layer 26 is sealed around the pins 221, and a second filling groove 243 is recessed into the inner edge of the frame 24 of the second connecting member 20, and the second stuffing groove 243 can cooperate with the first stuffing groove 252 to surround the pin 221, so that the thickness of the thermal melting glue layer 26 around the pin 221 is the same as the depth of the groove bottom of the first stuffing groove 252 and the depth of the groove bottom of the second stuffing groove 243, wherein, the second terminal 22 forms a frame 222, and the second terminal 22 is fixed on the L-shaped slot 211 by the frame 222, and the second terminal 22 is provided with two clamping pieces 223 symmetrically bent inwards from the frame 222, and the fixed end of the clip 223 connected to the frame 222 is located adjacent to the opening of the L-shaped slot 211, the free ends of the clamping pieces 223 are located near the accommodating space 241, so that the two clamping pieces 223 can be clamped on the root of the first terminal 11, thereby generating the effect that the first terminal 11 and the second terminal 22 are not easily loosened.

The assembly of the structure is shown in fig. 2 to fig. 7, the second terminals 22 are all placed into the second connecting member 20 from the end of the accommodating space 241, so that the second terminals 22 are clamped in the L-shaped slots 211 by the frame 222, the pins 221 of the second terminals 22 extend outwards along the frame 24, the cover plate 25 is placed into the accommodating space 241, the fastening blocks 251 of the cover plate 25 are fastened in the fastening slots 242 of the frame 24, so that the cover plate 25 can fill the accommodating space 241, and the relative positions of the frame 24 and the cover plate 25 are fixed by matching the fastening blocks 251 and the fastening slots 242, thereby achieving the stable covering effect during assembly, allowing the hot glue melting layer 26 to fill the first filling slots 252 and the second filling slots 243 along the space between the frame 24 and the cover plate 25, and further filling the gap between the frame 24 and the cover plate 25, meanwhile, the hot melt adhesive layer 26 is sealed around the pin 221, and it is noted that the first filler groove 252 and the second filler groove 243 form a winding-shaped recess around the pin 221, the hot melt adhesive layer 26 can flow and fill up the pin 211 by itself without winding the pin 211 during the material injection, the thickness of the hot melt adhesive layer 26 sealed around the pin 221 is the same as the depth of the groove bottom of the first filler groove 252 and the depth of the groove bottom of the second filler groove 243, because the hot melt adhesive layer 26 only seals a single surface, the processing steps are simplified, so as to achieve the practical functions of easy sealing and effective waterproofing, furthermore, the block 233 protruded from the base 23 can be connected to the frame 24 to enhance the structural reinforcement, and the processing indent of the fastening groove 242 is provided, so that the fastening groove 242 is not affected by the thickness of the frame 24, and the fastening groove 242 can not penetrate through the frame 24, the buckling groove 242 has a waterproof effect without additional sealing, the block 233 further provides for accommodating the internal thread sleeve 234, thereby forming a stable combination of the internal thread sleeve 234 and the base 23, and effectively increasing the lockable length of the internal thread sleeve 234, wherein the internal thread sleeve 234 is further made of metal, the external locking strength of the second connecting member 20 can be greatly improved by the cooperation of the internal thread sleeve 234 and the block 233, to sum up, the block 233 can simultaneously provide for the use of the buckling groove 242 and the internal thread sleeve 234, further, the second connecting member 20 is sleeved with a gasket 27 at the connecting seat 21, and the gasket 27 abuts against the abutting surface 231 of the base 23, so that the base 23 of the second connecting member 20 can clamp the gasket 27 to form a waterproof effect when assembled externally, and the base 23 is concavely provided with a ring groove 235 on the abutting surface 231, and a convex ring 271 is convexly provided on the inner edge of the gasket 27, and is accommodated in the annular groove 235 by the convex ring 271, and the gasket 27 is convexly provided with a pressing ring 272 in the opposite direction of the convex ring 271, that is, the convex ring 271 and the pressing ring 272 are provided on the two opposite surfaces of the gasket 27, when in actual use, in combination with the aspects shown in fig. 8 and 9, the first connecting member 10 is locked on a first member 30, and the first terminal 11 and the side block 122 are convexly provided on one end of the first member 30, and the second connecting member 20 is locked on a second member 40 from the inside to the outside by the internal thread sleeve 234, so that the connecting seat 21 is exposed on one end of the second member 40, and the second connecting member 20 can press the pressing ring 272 when the second member 40 is assembled to the outside, so that the convex ring 271 is expanded and pressed against the annular groove 235, thereby improving the waterproof effect between the second member 40 and the second connecting member 20, then, the first terminal 11 of the first connecting element 10 is inserted into the L-shaped groove 211 of the second connecting element 20, so that the clamping piece 223 of the second terminal 22 can clamp the first terminal 11, thereby forming an electrical conduction between the first connecting element 10 and the second connecting element 20, and the sealing element 12 is matched with the side block 122 to be pressed against the L-shaped groove 211, thereby achieving the waterproof function of the joint between the first member 30 and the second member 40, furthermore, the fixed end of the clamping piece 223 connected to the frame 222 is located at the opening adjacent to the L-shaped groove 211, i.e. the position of the two clamping pieces 223 adjacent to the L-shaped groove is the position of the maximum clamping force, so that the second terminal 22 is clamped at the root position of the first terminal 11, thereby having the effect that the first terminal 11 and the second terminal 22 are not easily released by themselves.

In another embodiment of the present invention, as shown in fig. 10 and fig. 11, the second connecting member 20 is provided with a concave limiting slot 236 between the pins 221, and the edge of the cover plate 25 is provided with a plurality of pressing blocks 253, and the first filling slot 252 is spanned on the periphery of the pressing blocks 253, and the pressing blocks 253 are accommodated in all the limiting slots 236 in a matching manner, so that the pins 221 are clamped between the pressing blocks 253, that is, the pins 221 are inserted into the same surface of the cover plate 25 which fills the hot melt adhesive layer 26, thereby having easy assembly and effective waterproof functions, and the connecting seat 21 is provided with a partition 212 between the L-shaped slots 211 at an interval, and the partition 212 extends to the accommodating space 241 to form a bottom edge portion 213, and the cover plate 25 is provided with a concave accommodating slot 254 on a surface facing the accommodating space 241, and the accommodating slot 254 extends to the pressing blocks 253, and the accommodating slot 254 is provided with a waterproof gasket 28, during assembly, the waterproof gasket 28 can be directly pressed against the bottom edge 213 of the partition 212, and the pin 221 is surrounded by the waterproof gasket 28, so that the waterproof effect of the pin 221 is achieved by the waterproof gasket 28 and the hot melt adhesive layer 26.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention; that is, all equivalent changes and modifications made without departing from the spirit and principles of the present invention should be considered within the scope of the present invention.

Claims

1. A waterproof connector of the guillotine type, characterized in that it comprises:

the first connecting piece is provided with a plurality of first terminals; and

a second connecting piece, a connecting seat is formed at one end of the second connecting piece, the connecting seat is in a right angle shape, a plurality of L-shaped grooves are formed on the connecting seat, a second terminal is fixed in each L-shaped groove, the first connecting piece and the second connecting piece are electrically conducted through the mutual connection of the first terminal and the second terminal, a base is formed at the other end of the second connecting piece, a butt joint surface is formed at one side of the base facing the connecting seat, an assembling surface is formed at one side of the base opposite to the butt joint surface, a frame body is convexly arranged on the assembling surface, a containing space communicated with the L-shaped grooves is defined by the frame body, buckling grooves are symmetrically formed at two opposite sides of the frame body, a pin is convexly arranged at the direction of the containing space by the second terminal, the pin is abutted against the frame body and extends out of the base, a cover plate is arranged in the containing space by the second connecting piece, the two ends of the cover plate are respectively provided with a buckling block in a protruding way, the buckling blocks are buckled with the buckling grooves, the connecting pins are clamped between the frame body and the cover plate, the outer periphery of the cover plate is concave inwards to form a first filling groove, a gap formed at the first filling groove is sealed by a hot melt adhesive layer, and the hot melt adhesive layer is sealed around the connecting pins;

2. The waterproof connector as claimed in claim 1, wherein the second connecting member has a concave limiting notch between two adjacent pins, and the edge of the cover plate has a plurality of pressing blocks, the first filling groove is disposed across the periphery of the pressing block, the pressing block is accommodated in the concave limiting notch, and the pins penetrate through the surface of the cover plate that seals the hot-melt adhesive layer and are sandwiched between two adjacent pressing blocks.

3. The waterproof connector as claimed in claim 2, wherein a partition is disposed between two adjacent L-shaped grooves of the connecting seat, the partition extends to the accommodating space and forms a bottom edge portion, a receiving groove is recessed on a surface of the cover plate facing the accommodating space, the receiving groove extends to the pressing block, a waterproof gasket is disposed in the receiving groove, the waterproof gasket abuts against the bottom edge portion of the partition, and the pin is surrounded by the waterproof gasket.

4. The waterproof connector as claimed in claim 1, wherein the assembling surface of the base has two blocks protruding therefrom, the blocks are connected to the frame, the locking groove is recessed into the blocks, and the locking groove does not penetrate through the frame.

5. The waterproof connector of claim 4, wherein the base is provided with two internally threaded sleeves, one end of the internally threaded sleeve is open to the abutting surface of the base, and the other end of the internally threaded sleeve extends inside the block.

6. The waterproof connector as claimed in claim 1, wherein the first connecting member is combined with a sealing member, the sealing member is provided with a plurality of through holes for the first terminals to pass through, the sealing member is formed in a right angle shape, and the sealing member is formed with a side block, when the first terminals and the second terminals are connected with each other, the side block of the sealing member is pressed against the L-shaped groove.

7. The waterproof connector as claimed in claim 1, wherein a gasket is disposed on the connecting seat of the second connecting member, and the gasket is pressed against the abutting surface of the base, and the base of the second connecting member can clamp the gasket when assembled externally.

8. The waterproof connector as claimed in claim 7, wherein the base has a groove recessed in the mating surface, and the gasket has a protruding ring protruding from an inner edge thereof, the protruding ring being received in the groove, the gasket having a pressing ring protruding from an opposite surface thereof, the pressing ring being capable of expanding to abut against the groove when assembled to the outside by pressing the pressing ring.

9. The waterproof connector as claimed in claim 1, wherein the second terminal forms a frame, the frame is fixed to the L-shaped groove, the second terminal is bent inward from the frame symmetrically with two clamping pieces, the fixed end of the clamping piece connected to the frame is located at the opening of the L-shaped groove, the free end of the clamping piece is located at the receiving space, and the two clamping pieces located in the same L-shaped groove can be clamped to the root of the first terminal.