TWI504080B - The locking device of the electrical connector - Google Patents

Description

Electrical connector locking device

The present invention relates to an electrical connector, and more particularly to an electrical connector having a locking device.

According to electrical connectors, there are many advantages in electrical products. Their main use is in the transmission of power supplies or signals. Therefore, electrical connectors have been widely used for the connection of information products and are indispensable components.

In practical applications, the use of electrical connectors is not only in the aforementioned electrical products, but also widely used in the circuit systems of steam and locomotives as a line connection. In order to ensure that the contact terminals in the electrical connector can be stably locked, the conventional electrical connector is composed of a body and a cover. The joint portion of the body has a terminal slot into which the contact terminal is inserted. In order to allow the plug of the complementary electrical connector to be stably inserted into the corresponding contact terminal of the electrical connector, the contact terminal must be in a locked state.

A locking device for a connector component and a connector provided with the device are disclosed, for example, in the Chinese Patent Publication No. CN 101032058 A (corresponding to WIPO International Publication No. WO2006/034865). The second embodiment is composed of a cover body and a contact carrier module. The center of the side wall of the contact module (contact terminal) carrier module and the two sides thereof respectively have a column and a contact member, and the front portion of the lever of the cover body is respectively provided with a locking finger and a removable stop structure And the end of the stop member forms a protrusion shape. During the latching of the cover body to the contact carrier module, the locking finger and the stopping member respectively abut the post and the contact member of the contact carrier module, and the front end portion of the complementary electrical connector and the stop The protrusions of the members form an interference such that the pins of the complementary electrical connector cannot be plugged into the contact terminals in the contact carrier module.

Then, the cover body is manually pushed to move toward the contact carrier module, and when the locking finger passes over and is buckled to the column, the protrusion of the stopping member also passes over the contact member, so that the front end of the lever is stopped. The protrusion of the movable member is bent downward by the compression of the front end portion of the complementary electrical connector, and the interference state is released, so that the pin of the complementary electrical connector is inserted into the contact terminal of the electrical connector to form an electrical connection.

During the latching process of the cover body and the contact carrier module, a protruding plug piece is disposed at a position of the pressing member corresponding to the opening portion of the terminal slot of the contact carrier module, and the plug piece allows The pressing member is deformed to produce a locking effect on the contact terminals.

Therefore, with the implementation of the prior art, when the contact terminal is not surely locked inside the electrical connector, the electrical connector can be prevented from being mis-plugged with the complementary electrical connector, thereby preventing the spring of the contact terminal from being damaged. Generally, the finder of the contact terminal of the electrical connector is in an unlocked state, and most of the assemblers in the assembly factory must assemble the complementary electrical connector from the electrical connector first; then, the electric device The contact carrier module of the connector and the cover form a locked state to interface the complementary electrical connector with the electrical connector to form an electrical connection. This move often causes assembly personnel to be troubled by the assembly and needs to be improved.

The main purpose of the present invention is to provide a locking device for an electrical connector. When the body and the cover of the electrical connector are not assembled to the correct second locking type, that is, the body and the cover When the contact terminal is in the unlocked state in the first stage, the control unit can be pressed and pushed by the external force source, for example, manually, to move the cover along the body. To the correct second-stage locking type; or docking with the electrical connector by using a complementary electrical connector, pushing the complementary electrical connector to the lever of the cover body, moving the cover body along the body to the correct second The segment is locked in a state in which the contact terminals in the body are in a locked state.

In order to achieve the foregoing objectives, the technical means adopted in the present invention is to provide a locking device for an electrical connector, comprising: a body having a joint portion for axially opening a plurality of terminal slots, wherein the terminal slots are provided with contact terminals The opening of each terminal slot has a pressing member; and a cover body having an opening at the front thereof, the rear end plate opening a slot corresponding to each contact terminal, and the inner corresponding to the isostatic pressing member axially protruding The at least one insertion piece is disposed; wherein the engaging portion and the opposite end wall top and bottom surfaces of the at least one side wall of the cover body are oppositely disposed with a pair of end slots and end hooks, and a card is respectively disposed behind and in front of the opposite end walls of the joint portion a hook and a pair of blocking pieces, and forming a receiving groove under the pair of blocking pieces; and the cover body is axially pivotally connected to a control rod at a side wall between the opposite end walls, the front and the center of the front side of the operating rod a protrusion and a resilient hook are respectively disposed, and a pair of fins are radially extended on both sides of the bottom of the protrusion; when the cover is sleeved toward the joint of the body, the opposite end groove and the end hook are mutually Fastened to make the pair of fins of the protrusion Connected to the pair of flaps to form a first segment predetermined position; when the protrusion of the lever is pushed and pressed by the external force source, the elastic hook and the hook are fastened to each other, and the pair The fins enter the receiving groove below the pair of flaps, and the plug piece inside the cover body is pressed and deformed by the pressing piece of the inner terminal slot of the body to lock the contact terminals in the terminal slot. The second segment locking pattern is formed.

In order to further disclose the specific technical content of the present invention, first, please refer to the drawings, wherein FIG. 1 is an exploded perspective view of the electrical connector of the present invention, and FIG. 2a to FIG. 2c are partially enlarged perspective views of the cover body when the cover body is sleeved toward the body, FIG. 3a 6 is a partially enlarged perspective view of the complementary electrical connector being docked toward the electrical connector of the present invention, and FIG. 7 is a cross-sectional view of the electrical connector of the present invention.

1‧‧‧ Ontology

11‧‧‧ joints

12‧‧‧ skirt

13‧‧‧Terminal slot

131‧‧‧ Pressure parts

132‧‧‧ positioning convex

14‧‧‧Contact terminal

141‧‧‧ wire

142‧‧‧ positioning groove

15‧‧‧ side wall

151‧‧‧ end slot

152‧‧‧ hook

152a‧‧‧Wedge bevel

153‧‧‧Support block

154‧‧ ‧Flap

155‧‧‧ accommodating slots

2‧‧‧ cover

21‧‧‧ openings

22‧‧‧End board

221‧‧‧Patch

222‧‧‧ slots

23‧‧‧ side wall

231‧‧‧End hook

24‧‧‧Control lever

241‧‧‧ fulcrum

242‧‧‧Protruding

243‧‧‧Flexible clasp

244‧‧‧ wing

245‧‧‧ trench

3‧‧‧Complementary connector

31‧‧‧ rear edge

Figure 1 is an exploded perspective view of the electrical connector of the present invention.

2a to 2c are partially enlarged perspective views of the cover body when the cover body is sleeved toward the body.

3a through 6 are partial enlarged perspective views of the complementary electrical connector when it is docked toward the electrical connector of the present invention.

Figure 7 is a cross-sectional view of the electrical connector of the present invention after assembly.

As shown in FIG. 1 to FIG. 7, basically, the electrical connector of the present invention is composed of a body 1 and a cover 2.

The body 1 is made of an insulating material such as plastic. The body 1 has a joint portion 11 at the rear thereof, and the joint portion 11 is adjacent to a large-sized skirt portion 12 in front of the joint portion 11. Wherein, the joint portion 11 is sleeved for the rear cover body 2 to be assembled into an electrical connector, and the electrical connector is used for the mating of the complementary electrical connectors to form an electrical connection. Therefore, the plurality of terminal slots 13 are axially opened in the joint portion 11, and the contact terminals 14 (shown in FIG. 7) are accommodated in the respective terminal slots 13, and the wires 141 of the contact terminals 14 are formed by the skirts in front of the terminal slots 13. The part 12 is worn out.

Referring to FIG. 1 and FIG. 7 , a pressing portion 131 is disposed in an open portion of each of the terminal slots 13 , and the cover body 2 protrudes in a direction corresponding to at least one of the plurality of pressing members 131 arranged in a longitudinal direction. The insertion piece 221 is elastically deformed when the insertion piece 221 is moved and inserted toward the corresponding pressing piece 131, and the positioning protrusion 132 is fastened to the positioning groove provided by the contact terminal 14. Within 142, each contact terminal 14 is in a locked state.

The technical feature of the body 1 is that at least one side wall 15 of the joint portion 11 , for example, the top left and right end wall top surfaces of the top wall are oppositely disposed with a pair of end slots 151 , and the center and the sides of the opposite end walls are respectively protruded A pair of hooks 152 and a pair of support blocks 153 are disposed, and a pair of blocking pieces 154 are oppositely disposed on the front side of the pair of supporting blocks 153, and a receiving groove 155 is formed under the pair of blocking pieces 154. In addition, a wedge-shaped inclined surface 152a is disposed behind the hook 152.

The cover body 2 is also made of an insulating material, such as plastic. The front opening 21 of the cover body 2 is used to sleeve the joint portion 11 of the body 1 , and the plurality of plug pieces 221 are axially protruded from the rear end plate 22 . Slots 222 (shown in FIGS. 1 and 7) are formed corresponding to the positions of the contact terminals 14 so that the pins of the complementary electrical connectors pass through, so that the pins are electrically connected to the contact terminals 14.

The cover 2 is technically characterized in that the same side wall 23 of the side wall 15 of the joint portion 11, for example, the left and right end wall bottom surfaces of the top wall are oppositely disposed opposite to the end groove 151, and a pair of end hooks 231 are provided. And a pair of control rods 24 are axially disposed between the pair of end walls. The two sides of the control rod 24 are pivotally connected to the side wall 23 by a pair of support shafts 241, so that the front section of the control rod 24 has elastic bending characteristics. The protrusions 242 and the elastic hooks 243 are respectively disposed in the circumferential direction and the central axial direction of the front section of the control rod 24, and a pair of fins 244 extend radially from both sides of the bottom of the protrusions 242. Moreover, in order to increase the elasticity of the elastic hook 243, a pair of through grooves 245 are axially opened on both sides of the control rod 24 in parallel. Further, the protruding portion 242 is of a frame type and has a sloped surface on both sides of the rear side.

When assembling the electrical connector of the present invention, referring to FIG. 1 and FIG. 2a to FIG. 2c, the contact terminal 14 is first inserted into each terminal slot 13 of the body 1, and then the cover 2 is directed toward the joint portion 11 of the body 1. The sockets are sleeved so that the front opening 21 of the lid body 2 is inserted along the joint portion 11. At this time, the end hooks 231 of the bottom surfaces of the side walls of the side walls 23 of the cover body 2 are fastened into the end slots 151 of the top end walls of the side walls 15 of the joint portion 11 (as shown in FIG. 2a), so that the cover The body 2 is not axially disengaged by the joint portion 11 of the body 1. The two sides of the protrusion 242 of the lever 24 are located above the pair of support blocks 153 and abut against the two sides of the joint portion 154 (as shown in FIG. 2b), and the central lever 243 of the control rod 24 Then, adjacent to the wedge-shaped slope 152a of the hook 152 (as shown in FIG. 2c), a first segment predetermined pattern is formed.

At this time, the assembler presses the protrusion 242 at the front end of the lever 24 manually, for example, by a finger, so that the pair of flaps 244 touch the lower support blocks 153, thereby restricting the pair of flaps 244. The pressure is increased to facilitate the abutment of the pair of flaps 244 from the pair of flaps 154, and then the lever 24 is continuously pushed to urge the pair of flaps 244 into the receiving slots 155 below the pair of flaps 154. The central elastic hook 243 of the lever 24 passes over the hook 152 and forms a fastening type, so that the cover 2 is not axially disengaged from the joint portion 11 of the body 1. At this time, a plurality of plug pieces 221 protruding in the axial direction of the end plate 22 are inserted into the corresponding pressing members 131 of the terminal groove 13, so that the pressing members 131 are deformed, and the positioning convex portions 132 are buckled in contact with each other. The terminal 14 is disposed in the positioning groove 142, and each of the contact terminals 14 is in a locked state to form a second segment locking type (as shown in FIG. 7).

If the assembler does not assemble the main body 1 and the cover 2 to the second locking type due to the negligence of the operation, that is, the docking operation of the electrical connector and the complementary electrical connector 3, please refer to FIG. 3a and FIG. 3b. The connector 3 is nested in front of the cover body 2, since the body 1 and the cover body 2 are in a first predetermined position, that is, the pair of fins 244 of the protrusion 242 of the lever 24 are located at the pair of support blocks. 153 above and abuts the flap 154 on both sides of the joint portion 11 (as shown in FIG. 3a), and the central elastic hook 243 of the lever 24 is adjacent to the wedge-shaped slope 152a of the hook 152 (as shown in FIG. 3b) Show). At this time, the front end edge 31 of the complementary electrical connector 3 has not touched the protrusion 242 of the lever 24 .

Then, the complementary electrical connector 3 is continuously pushed along the cover 2, so that the front edge 31 of the complementary electrical connector 3 touches the protrusion 242 of the lever 24, and then the complementary electrical connector 3 is continuously pushed to The front edge 31 presses down the protrusion 242 of the lever 24, and the pair of flaps 244 touches the support block 153 on the lower sides, thereby limiting the amplitude of the pair of flaps 244, which is beneficial to the pair of wings. The sheet 244 is disengaged from the pair of flaps 154 (as shown in Figure 4a); and the central resilient hook 243 of the lever 24 is still adjacent to the wedge-shaped ramp 152a of the hook 152 (as shown in Figure 4b).

Then, the complementary electrical connector 3 is continuously pushed, such that the front end edge 31 presses down the protrusion 242 of the lever 24 and causes the pair of fins 244 to enter the receiving groove 155 below the pair of flaps 154 ( As shown in FIG. 5a), the central elastic hook 243 of the lever 24 passes over the hook 152 and forms a snap-fit type (as shown in FIG. 5b), so that the cover 2 does not have the joint 11 of the body 1. Axial out. At this time, a plurality of plug pieces 221 protruding in the axial direction of the end plate 22 are inserted into the corresponding pressing members 131 of the terminal groove 13, so that the pressing members 131 are deformed, and the positioning convex portions 132 are buckled in contact with each other. The terminal 14 is preset in the positioning groove 142, and each contact terminal 14 is in a locked state to form a second segment locking type (as shown in FIGS. 5a, 5b and 7).

Finally, the complementary electrical connector 3 is further pushed, and the front end edge 31 is completely pressed against the protrusion 242 of the control rod 24, and the protrusion 242 and the pair of fins 244 are bent and deformed in the receiving groove 155. The pair of fins 244 are abutted against the pair of support blocks 153, that is, the mating operation of the electrical connector and the complementary electrical connector is completed, so that the latch (generally, not shown) is electrically connected to the contact terminal 14.

Therefore, the effect of the gain of the present invention is that the body and the cover of the electrical connector can be manually configured to perform the first predetermined pre-positioning of the body and the cover by the setting of the locking device. And the assembly of the second locking type, so that the electrical connector and the complementary connector The connector can be normally docked; or the installation of the second segment locking type of the body and the cover is not performed due to the negligence of the operation, and the docking operation with the complementary electrical connector is directly performed, by the complementary electrical connector Pushing and pressing down the front section of the lever of the cover body, so that the elastic hook of the control rod is fastened to the hooks of the opposite side of the body, and the assembly of the second locking type is automatically completed, and the front section of the control rod is By being compressed by the complementary electrical connector, the device is bent and deformed in the accommodating groove of the body to make the electrical connector and the complementary connector perform a normal docking operation; and the plug piece inside the cover body is opposite to the internal terminal of the body. The pressure piece of the groove is pressed and deformed, so that the contact terminals are locked in the terminal slot to facilitate the electrical connection of the electrical connector with the complementary electrical connector. Therefore, when the electrical connector is in the first predetermined position, the interference does not interfere with the complementary electrical connector, but the cover is pushed by the complementary electrical connector, so that the cover and the body form a second locking type. The assembly of the state is a great structure for similar items.

The disclosure of the present invention is a preferred embodiment. Any change or modification of the present invention originating from the technical idea of the present invention and being easily inferred by those skilled in the art will not deviate from the scope of patent rights of the present invention.

1‧‧‧ Ontology

11‧‧‧ joints

12‧‧‧ skirt

13‧‧‧Terminal slot

131‧‧‧ Pressure parts

15‧‧‧ side wall

151‧‧‧ end slot

152‧‧‧ hook

152a‧‧‧Wedge bevel

153‧‧‧Support block

154‧‧ ‧Flap

155‧‧‧ accommodating slots

2‧‧‧ cover

21‧‧‧ openings

22‧‧‧End board

221‧‧‧Patch

222‧‧‧ slots

23‧‧‧ side wall

231‧‧‧End hook

24‧‧‧Control lever

241‧‧‧ fulcrum

242‧‧‧Protruding

243‧‧‧Flexible clasp

244‧‧‧ wing

245‧‧‧ trench

Claims (10)

A locking device for an electrical connector, comprising: a body having a joint portion for axially opening a plurality of terminal slots, each of the terminal slots for receiving a contact terminal, and each of the terminal slot opening portions having a compression And a cover body having an opening at the front side thereof, the rear end plate opening a slot corresponding to each contact terminal, and at least one insertion piece is protruded from the inner side of each of the slot holes corresponding to the pressure piece; wherein the joint And a pair of end slots and a pair of end hooks are opposite to the opposite end wall and the bottom surface of the at least one side wall of the cover body, and a hook and a pair of blocking pieces are respectively disposed behind and in front of the opposite end walls of the joint portion. Forming a receiving groove under the pair of blocking pieces; and the cover body is axially pivotally connected to a control rod at a side wall between the opposite end walls, and a protrusion and a protrusion are respectively arranged in a circumferential direction and a central axial direction of the front portion of the control rod a resilient hook and a pair of fins extending radially on both sides of the bottom of the protrusion; when the cover is sleeved toward the joint, the pair of end slots and the pair of hooks are fastened to each other, so that the pair of wings The sheet abuts against the pair of flaps to form a first segment predetermined pattern; When the protrusion is pushed and pressed by the external force source, the elastic hook and the hook are fastened to each other, and the pair of flaps enter the receiving groove below the pair of flaps, and the inside of the cover is Each of the plug pieces presses and deforms the pressing member of each terminal slot of the main body to lock each contact terminal in each terminal slot to form a second segment locking type. The locking device of the electrical connector of claim 1, wherein the two sides of the hook further comprise a pair of support blocks, and the pair of fins are located in the pair before forming the second segment locking pattern. The support block is arranged to limit the pressure amplitude of the pair of fins, thereby facilitating the abutment of the pair of fins from the pair of flaps, and causing the pair of flaps to enter the receiving groove below the pair of flaps . The locking device of the electrical connector of claim 2, wherein the protrusion is subjected to When the external force source is completely compressed, the protruding portion and the pair of fins are bent and deformed in the receiving groove, and the pair of fins are abutted against the pair of supporting blocks. The locking device for an electrical connector according to claim 1, wherein the external force source refers to an action of manually pushing and pressing the protrusion of the lever. The locking device of the electrical connector of claim 1, wherein the external force source refers to the cover that is connected to the electrical connector by a complementary electrical connector, and the control is controlled by the complementary electrical connector. The protrusion of the rod is subjected to an action of pushing and pressing. The locking device of the electrical connector of claim 1, wherein the hook is provided with a wedge-shaped inclined surface, and the elastic hook is adjacent to the wedge-shaped inclined surface when the first predetermined shape is formed. The locking device for an electrical connector according to claim 1, wherein the protrusion is a frame type and the rear sides have a sloped surface. The locking device of the electrical connector of claim 1, wherein the side wall of the cover body between the opposite end walls is pivotally connected to both sides of the lever by a pair of support shafts. The locking device of the electrical connector of claim 1, wherein the elastic hooks have a pair of through grooves extending axially in parallel with the lever. The locking device of the electrical connector of claim 1, wherein the pressing member has a positioning convex portion, and the positioning convex portion is buckled in a positioning groove provided by each contact terminal.