WO2022111629A1

WO2022111629A1 - Wiring terminal and electric connector

Info

Publication number: WO2022111629A1
Application number: PCT/CN2021/133471
Authority: WO
Inventors: 丁高松; 陈招; 蓝贵凡
Original assignee: 宁波高松电子有限公司
Priority date: 2020-11-30
Filing date: 2021-11-26
Publication date: 2022-06-02
Also published as: CN112382865A

Abstract

Disclosed in the present invention is a wiring terminal having a high space utilization rate. The wiring terminal comprises an insulating shell (1), a cover plate (2), an operating member (3), an electric conductor (4), and an elastic clamping member (5). The electric conductor (4) and the elastic clamping member (5) are both arranged in a space defined after the insulating shell (1) and the cover plate (2) are assembled; a first end (31) of the operating member (3) is rotatably disposed on the insulating housing (1); a second end (32) of the operating member (3) is movably located in a top opening (11). The second end (32) presses against an elastic free part (52) of the elastic clamping member (5) when the second end (32) of the operating member (3) rotates when the operating member (3) is subjected to a downforce. Also provided in the present invention is an electric connector. According to the wiring terminal of the present invention, the elastic clamping member can be pressed in a labor-saving manner without extending the length of the second end of the operating member; a wire can be conveniently connected or taken out, and the problem that the operating member does not rebound is avoided.

Description

Terminal blocks and electrical connectors

technical field

The invention relates to the technical field of wiring terminals, in particular to a wiring terminal and an electrical connector with high space utilization rate and convenient wiring and wiring operations.

Background technique

The existing electrical connector has at least one connection terminal, the connection terminal includes an insulating housing and a cover plate assembled with each other, the insulating housing is provided with a wiring hole for the wire to be inserted, the insulating housing is provided with a conductor, and The space formed by the assembly of the insulating shell and the cover plate is also provided with a clamping elastic piece. The clamping elastic piece has a fixed end fixed on the conductor and a free end that can be elastically deformed and moved after being subjected to top pressure. When it is necessary to wire into the terminal, use an external tool to directly or indirectly apply a downward pressure to the clamping shrapnel, so that the free end of the clamping shrapnel is elastically deformed and moves downward after being stressed, and then the wire is passed through. The wiring hole of the insulating shell, and then pass the wire through the gap formed by the downward movement of the clamping spring and located in the gap between the free end of the clamping spring and the conductor, after releasing the downward pressure on the clamping spring, The clamping elastic piece moves up due to the action of its own elastic restoring force, and clamps the conductive wire to realize electrical contact between the conductive wire and the conductor.

Chinese invention patent CN100442600C (Patent No. 200510119372.7) discloses a connecting device for electrical conductors, which has a clamping part, where a clamp which is directly or via a metal cage is installed into an insulating material shell is arranged Tightening spring, the clamping spring is designed to press a conductor against a contact rail in the switched-on state, wherein the clamping spring is equipped with an actuating device designed to actuate the ejector for actuating the clamping spring to open The clamping part is characterized in that: the operating ejector is provided with at least two mating areas on its outer surface for mating with operating tools, and the two mating areas are designed as notch-type recesses for mating with screwdrivers Each matching area forms an angle with each other on the operating ejector, and two notch-type grooves are arranged on the operating ejector at an angle of 60-120° to each other. By arranging the operating ejector in a rotatable manner, the operating ejector is particularly suitable for the operation of direct plug-in connections in confined spaces, since the operating tool can be mated in different positions and in different directions. The actuating ejector element is used to open the clamping spring, so that the operating ejector element is particularly suitable for opening the spring which acts as a compression spring on the conductor and presses the conductor against a contact rail at the clamping point, especially for operating The two mating areas of the tool are angled to each other and/or on mutually angled areas of the operating ejector.

However, the connecting device disclosed in the invention patent CN100442600C also has some problems: in the insulating material housing with limited internal space, since the operating ejector and the clamping spring are arranged on the same side of the insulating material housing, during the operating ejector When the free end of the clamping spring is pressed against the free end of the clamping spring to facilitate the wire being inserted into the insulating material housing or taken out from the insulating material housing, the operating ejector needs to have a sufficient length to ensure that the operating ejector can be pressed to the Clamp the free end of the spring. Obviously, the operation ejector at this time needs to occupy a large space in the insulating material housing, which will reduce the space utilization rate in the insulating material housing, and finally the operation ejection can only be satisfied by increasing the overall volume of the insulating material housing. The actual need of the piece pressing the clamping spring.

SUMMARY OF THE INVENTION

The first technical problem to be solved by the present invention is to provide a connection terminal which is convenient for wiring and wire-taking operations in view of the above-mentioned prior art.

The second technical problem to be solved by the present invention is to provide an electrical connector for the above-mentioned prior art.

The technical solution adopted by the present invention to solve the first technical problem is as follows: the connection terminal includes:

Insulating housing with wiring holes;

The cover plate is assembled together with the insulating shell;

The operating part is arranged on the insulating housing;

The electrical conductor is arranged in the space formed after the insulating shell and the cover plate are assembled;

The elastic clamping piece is arranged in the space formed after the insulating housing and the cover plate are assembled, the elastic clamping piece has a fixing part and an elastic free part, and the fixing part is arranged in the insulating housing;

It is characterized in that the insulating housing has a top opening, the first end of the operating member is rotatably arranged on the insulating housing and the first end is located above the electrical conductor, and the second end of the operating member The second end portion of the operating member is movably located in the top opening; wherein, when the second end portion of the operating member is rotated due to the downward pressure on the operating member, the second end portion presses against the elastic free portion of the elastic clamping member, so that A gap for the conductive wire to pass through is formed between the elastic free portion and the electrical conductor.

When the wire needs to be taken out or connected to the wire through the wiring hole of the terminal, by applying pressure to the second end of the operating member, the first end of the operating member will rotate relative to the insulating housing, and the second end of the operating member will be in the The top opening of the insulating housing moves in the direction of the inside of the insulating housing, until the second end of the operating member presses against the elastic free part of the elastic clamping part and the elastic free part moves down, the elastic free part and the elastic free part move downward. A gap is formed between the electrical conductors for the conductive wires to pass through, so that it is convenient to take out the wires that have been connected to the inside of the insulating housing or connect the external wires to the inside of the insulating housing through the wiring holes of the insulating housing; Under the action of the elastic restoring force of the tightening member, the connected wire is clamped between the elastic free portion of the elastic clamping member and the electrical conductor to realize electrical contact between the wire and the electrical conductor. Since the operating member is arranged above the electrical conductor, and the operating member can rotate relative to the insulating housing, the second end of the operating member presses the elastic free portion of the elastic clamping member against the elastic free portion of the elastic clamping member, so there is no need to extend the length of the operating member. The length of the second end portion can easily and effortlessly press the elastic free portion of the elastic clamping member, so as to facilitate the insertion of the wire or the removal of the wire.

In order to limit the degree of elastic deformation of the elastic clamping member due to being pressed, prevent the elastic clamping member from being over-pressed, and thus maintain the elastic strength of the elastic clamping member, improved, in the wiring terminal described , a limiting structure for limiting the movement stroke of the elastic free portion of the elastic clamping member is formed on the electrical conductor. In this way, when the elastic free portion of the elastic clamping member is elastically deformed due to the pressing of the second end of the operating member and moves downward toward the direction of the fixing portion, once the elastic free portion collides with the limiting structure on the electrical conductor, The elastic free part can no longer be pressed down, so as to ensure that the maximum downward stroke that the elastic free part can achieve when the elastic clamping piece is elastically deformed is limited at the limiting structure, preventing the elastic free part of the elastic clamping piece from being pushed down. Excessive top pressure, thus maintaining the elastic strength of the elastic clamping piece, preventing excessive elastic deformation, and prolonging the service life of the elastic clamping piece.

As a way to realize the rotational arrangement of the first end of the operating member on the insulating housing, in the connection terminal of the invention, the operating member includes:

an operating member body, formed with a first end portion of the operating member;

at least one extension arm is formed on the operating member body, and the end of the extending arm is the second end of the operating member;

Wherein, the first end of the operating member has a rotating shaft, and the insulating housing is formed with a rotating shaft hole adapted to rotate the rotating shaft.

In order to facilitate the electrical testing tool to be able to electrically measure the electrical conductor, it is further improved that in the terminal, the operating member has an opening that is directly opposite to the top opening of the insulating housing, so that the electrical testing tool can be inserted into the operating member. After the opening, it contacts the electrical conductor to complete the electrical measurement.

As another way to realize the rotation arrangement of the first end of the operating member on the insulating housing, the insulating housing may also have a pin shaft, and the first end of the operating member has a pin shaft adapted to rotate pin hole. That is, through the rotational cooperation between the pin shaft and the pin shaft hole, the effect of the rotation setting of the operating member on the insulating housing is realized.

Preferably, in the terminal of this invention, the electrical conductor comprises:

The electrical conductor body is formed with a hypotenuse, and the hypotenuse is the defined structure.

a first fixing part, formed on the electrical conductor body, the first fixing part is located below the first end of the operating member;

The second fixing portion is formed on the electrical conductor body, and the fixing portion of the elastic clamping piece is arranged on the second fixing portion.

In order to facilitate the fixing of the electrical conductor to the insulating housing, in the wiring terminal of the invention, a fixing hole is formed on the electrical conductor body, and a first fixing hole is formed on the insulating housing to be fastened to the fixing hole. column.

In order to facilitate the fixing of the elastic clamping member in the space formed by the assembly of the insulating housing and the cover plate, in the terminal of the invention, the fixing part of the elastic clamping member and the electrical conductor are fastened and fitted with each other through the connection terminal of the invention. The concave-convex structure is fixed together.

The technical solution adopted by the present invention to solve the second technical problem is as follows: the electrical connector is characterized in that it has at least one of the connection terminals described in any one of the above.

Compared with the prior art, the present invention has the advantages that: when the wire needs to be taken out or connected through the wiring hole of the terminal, by applying pressure to the second end of the operating member, the first end of the operating member will be opposite to each other. When the insulating housing rotates, the second end of the operating piece moves toward the inside of the insulating housing in the top opening of the insulating housing, until the second end of the operating piece presses against the elastic free portion of the elastic clamping piece and When the elastic free part moves down, a gap is formed between the elastic free part and the electrical conductor for the conductive wire to pass through, so that it is convenient to take out the wire that has been connected to the inside of the insulating housing or connect the external wire through the insulating housing. The hole is connected to the inner side of the insulating shell;

Under the action of the elastic restoring force of the elastic clamping piece, the connected wire is clamped between the elastic free part of the elastic clamping piece and the electrical conductor, so as to realize the electrical contact between the wire and the electrical conductor. Since the operating member is arranged above the electrical conductor, and the operating member can rotate relative to the insulating housing, the second end of the operating member presses against the elastic free portion of the elastic clamping member, so the terminal is suitable for compact applications. In places where the shape or space is limited, and the operating part is small in size, it has sufficient strength, and it is easy and labor-saving to press the elastic free part of the elastic clamping part without extending the length of the second end of the operating part, so as to facilitate access The problem of non-rebounding of the operating element can also be avoided by pulling the wire or taking out the wire.

The electrical connector of the present invention also has the above-mentioned advantages.

Description of drawings

1 is a schematic structural diagram of a connection terminal in an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of the terminal shown in FIG. 1 after the cover plate is removed;

Fig. 3 is the front view of the structure shown in Fig. 2;

FIG. 4 is a schematic exploded view of the structure of the terminal shown in FIG. 1;

5 is a schematic structural diagram of an insulating housing in an embodiment of the present invention;

6 is a schematic structural diagram of an operating member in an embodiment of the present invention;

7 is a schematic structural diagram of an electrical conductor in an embodiment of the present invention;

8 is a schematic structural diagram of an elastic clamping member in an embodiment of the present invention;

9 is a schematic diagram of the state when the operating member of the connection terminal presses against the elastic free portion of the elastic clamping member in the embodiment of the present invention;

FIG. 10 is a schematic structural diagram of an electrical connector in an embodiment of the present invention.

Detailed ways

The present invention will be further described in detail below with reference to the embodiments of the accompanying drawings.

As shown in FIG. 1 to FIG. 4 , a preferred embodiment of a wiring terminal is provided for the present invention. The terminal includes an insulating housing 1 , a cover plate 2 , an operating member 3 , an electrical conductor 4 and an elastic clamping member 5 . The cover plate 2 is assembled with the insulating casing 1 through a detachable structure, the operating member 3 is arranged on the insulating casing 1, and the electrical conductor 4 and the elastic clamping member 5 are both arranged after the insulating casing 1 and the cover plate 2 are assembled. within the formed space. in:

Referring to FIG. 5 , the insulating housing 1 of this embodiment has a wiring hole 10 , a top opening 11 , a shaft hole 12 , a first fixing column 13 and a second fixing column 14 , and the top opening 11 is located at the upper end of the insulating housing.

Referring to FIG. 6 , the operating member 3 of this embodiment includes an operating member body 33 and at least one extending arm 34 , and the operating member body 33 has an opening 35 disposed opposite to the top opening 11 of the insulating housing 1 to meet the electrical requirements The test tool is inserted into the opening 35 of the operating member and then contacts the electrical conductor 4 to complete the electrical measurement action; the operating member body 33 is formed with a first end 31 , the first end 31 is located above the electrical conductor 4, and the extension arm 34 is formed on the operating member body 33 , the end of the extending arm 34 forms the second end portion 32 of the operating member 3 , and the first end portion 31 of the operating member 3 has a fitting for the rotating shaft hole 12 to rotate in the rotating shaft hole 12 . Spindle 311 . Through the cooperation between the rotating shaft 311 and the rotating shaft hole 12 , the first end 31 of the operating member 3 can be rotatably disposed on the insulating housing 1 , and the second end 32 of the operating member 3 can be movably positioned on the insulating housing 1 In the top opening 11 of the 1, that is, the second end 32 will perform a rotational movement with the rotating shaft 311 as the center.

Referring to FIG. 7 , the electrical conductor 4 of this embodiment includes an electrical conductor body 40 , a first fixing portion 41 and a second fixing portion 42 . The electrical conductor body 40 is formed with a fixing hole 400 and a hypotenuse 401 , and a first fixing column is formed. 13 passes through the fixing hole 400 and realizes the tight fit between the first fixing post 13 and the fixing hole 400 , and the bevel 401 is a limiting structure that defines the movement stroke of the elastic free portion 52 of the elastic clamping member 5 ; The first fixed portion 41 is formed in the electrical conductor body 40, and the first fixed portion 41 is located below the first end portion 31 of the operating member 3; The fixing portion 51 is provided on the second fixing portion 42 . Wherein, the electrical conductor 4 is directly installed in the space formed after the insulating housing 1 and the cover plate 2 are assembled.

Referring to FIG. 8 , the elastic clamping member 5 of this embodiment has a fixed portion 51 , an elastic free portion 52 and an arc-shaped connecting portion 53 located between the elastic free portion 52 and the fixed portion 51 , and the fixed portion 51 is provided on the electrical conductor. On the second fixing portion 42 of the electrical conductor 4 , the elastic free portion 52 abuts against the first fixing portion 41 of the electrical conductor 4 under the condition of no top pressure. The fixing portion 51 of the elastic clamping member 5 and the electrical conductor 4 are fixed together by a concave-convex structure that is fastened to each other, and the arc-shaped connecting portion 53 is fastened on the second fixing column 14 . Wherein, when the second end portion 32 of the operating member 3 is rotated due to the downward pressure of the operating member, the extension arm 34 of the second end portion 32 presses the elastic free portion 52 of the elastic clamping member 5, so that the elastic free portion 52 and the conductive A gap for the conductive wire to pass through is formed between the bodies 4 .

Referring to Figures 2, 3 and 9, when the wire needs to be taken out or connected through the wiring hole 10 of the terminal, by applying pressure to the second end 32 of the operating member 3, the first When the end portion 31 is rotated relative to the insulating housing 1, the second end portion 32 of the operating member 3 will move in the direction of the inside of the insulating housing 1 in the top opening 11 of the insulating housing 1 until the second end portion of the operating member 3 When the extension arm 34 of 32 presses against the elastic free portion 52 of the elastic clamping member 5 and causes the elastic free portion 52 to move down, a gap is formed between the elastic free portion 52 and the electrical conductor 4 for the wire to pass through, so as to facilitate the removal of the original The wire that has been connected to the inside of the insulating housing or the external wire is connected to the inner side of the insulating housing; under the action of the elastic restoring force of the elastic clamping member 5, the connected wire is clamped on the elastic clamping member Between the elastic free portion 52 of 5 and the electrical conductor 4, the electrical contact between the wire and the electrical conductor is realized. In the connection terminal of this embodiment, since the operating member 3 is arranged above the electrical conductor 4, and the operating member 3 can be rotated relative to the insulating housing 1, the second end 32 of the operating member 3 is pressed against the elasticity. The elastic free portion 52 of the clamping member 5, so that the terminal is suitable for compact or space-constrained places, and the operating member is small in size, has sufficient strength, and does not need to extend the length of the second end of the operating member. The elastic free part of the elastic clamping piece is pressed with less effort, so as to facilitate the insertion of the wire or the removal of the wire, and the problem of non-rebounding of the operating member can also be avoided.

It should be noted that, in this embodiment, by arranging the inclined edge 401 on the electrical conductor 4, the elastic free portion 52 of the elastic clamping member 5 can be pressed by the extending arm 34 of the second end portion 32 of the operating member 3. When elastic deformation occurs and moves downward toward the fixed portion 51 , once the elastic free portion 52 collides with the inclined edge 401 (ie, the limiting structure), the elastic free portion 52 can no longer be pressed down, so that It is ensured that the maximum downward stroke that the elastic free portion 52 can achieve when the elastic clamping member is elastically deformed is limited to the oblique edge 401 of the electrical conductor 4, so as to avoid excessive pressing of the elastic free portion of the elastic clamping member, thus maintaining The elastic strength of the elastic clamping piece is improved, so that excessive elastic deformation is not generated, and the service life of the elastic clamping piece is prolonged.

According to actual needs, another structure can also be used to achieve the effect of rotating the first end of the operating member on the insulating housing. For example, the insulating housing 1 can be provided with a pin, and the first end 31 of the operating member 3 has a pin hole adapted to rotate the pin. In this way, when pressure is applied to the second end of the operating member, the first end of the operating member will rotate under the cooperation of the pin shaft hole and the pin shaft, which also realizes the rotational arrangement of the operating member relative to the insulating housing. Effect.

Referring to FIG. 10, it is a preferred embodiment of the electrical connector of the present invention. Wherein, the electrical connector has two connection terminals in this embodiment.

Claims

A terminal, comprising:

an insulating housing (1) with a wiring hole (10);

The cover plate (2) is assembled together with the insulating housing (1);

The operating member (3) is arranged on the insulating housing (1);

The electrical conductor (4) is arranged in the space formed after the insulating casing (1) and the cover plate (2) are assembled;

The elastic clamping piece (5) is arranged in the space formed after the insulating housing (1) and the cover plate (2) are assembled, the elastic clamping piece (5) has a fixed part (51) and an elastic free part (52) ), the fixing part (51) is arranged in the insulating housing (1);

It is characterized in that the insulating housing (1) has a top opening (11), and the first end (31) of the operating member (3) is rotatably arranged on the insulating housing (1) and the first end (31) is rotatably arranged on the insulating housing (1). The portion (31) is located above the electrical conductor (4), and the second end portion (32) of the operating member (3) is movably located in the top opening (11); wherein the operating member (3) When the second end portion (32) of the second end portion (32) is rotated due to the downward pressure on the operating member, the second end portion (32) presses against the elastic free portion (52) of the elastic clamping member (5), so that the elastic free portion (52) ) and the electrical conductor (4) to form a gap for the conductive wire to pass through.
The terminal according to claim 1, characterized in that, a limiting structure is formed on the electrical conductor (4) to limit the movement stroke of the elastic free portion (52) of the elastic clamping member (5).
The terminal according to claim 1, characterized in that, the operating member (3) comprises:

an operating member body (33), formed with a first end portion (31) of the operating member (3);

At least one extension arm (34) is formed on the operating member body (33), and the end of the extending arm (34) is the second end portion (32) of the operating member (3);

Wherein, the first end (31) of the operating member (3) has a rotating shaft (311), and the insulating housing (1) is formed with a rotating shaft hole (12) adapted to rotate the rotating shaft (311).
The connection terminal according to claim 3, characterized in that, the operating member (3) has an opening (35) which is disposed opposite to the top opening (10) of the insulating housing (1).
The connection terminal according to claim 1, wherein the insulating housing has a pin shaft, and the first end of the operating member has a pin shaft hole adapted to rotate the pin shaft.
The terminal according to claim 2, characterized in that the electrical conductor (4) comprises:

The electrical conductor body (40) is formed with a hypotenuse (401), and the hypotenuse (401) is the defined structure.

a first fixing portion (41) formed on the electrical conductor body (40), the first fixing portion (41) being located below the first end portion (31) of the operating member (3);

The second fixing part (42) is formed on the electrical conductor body (40), and the fixing part (51) of the elastic clamping piece (5) is arranged on the second fixing part (42).
The terminal according to claim 6, characterized in that a fixing hole (400) is formed on the electrical conductor body (40), and a fixing hole (400) is formed on the insulating housing (1) The first fixing column (13) is fixedly matched.
The connection terminal according to any one of claims 1 to 7, wherein an arc-shaped connection between the elastic free portion (52) and the fixed portion (51) is formed on the elastic clamping member (5). The insulating casing (1) is formed with a second fixing column (14) which is fixed with the arc-shaped connecting portion (53).
An electrical connector is characterized in that it has at least one connection terminal according to any one of claims 1 to 8 .