CN110492293A - A kind of power connector and its assemble method - Google Patents

Abstract

The invention relates to the technical field of electrical connectors, in particular to a power connector and an assembly method thereof. In the power connector of the invention, a locking component is inserted into a blind hole of a plug. When the socket is connected to the plug, the step of the socket can Squeeze the blocking part to push the locking component to move inward. After the step crosses the blocking part, the locking component rebounds to snap into the socket, ensuring a tight and stable connection between the socket and the plug, and the locking component can be used as a push switch without passing through the plug , and then there is no need to increase the process to block the hole for installing the locking assembly on the plug, reduce the number of structural parts of the locking assembly, reduce the production process of the plug, improve production efficiency, and reduce production costs; secondly, the assembly method of the present invention can first Put the elastic piece into the locking assembly or the blind hole, then insert the locking assembly into the blind hole to crimp the elastic piece, and snap the block into the first groove to prevent the locking assembly from entering the blind hole. Pop-up, easy to operate.

Description

A kind of power connector and its assembly method

technical field

The invention relates to the technical field of electrical connectors, in particular to a power connector and an assembly method thereof.

Background technique

Electrical connectors are the basic components for electrical connection and signal transmission between devices, components and components, systems and systems, usually including sockets and plugs, which are widely used in various electrical circuits; however, in the prior art Among them, most of the fast locking structures between the plug and the socket have the problems of many parts and complicated assembly process, which lead to high production costs of the electrical connector.

Contents of the invention

The purpose of the present invention is to at least solve one of the technical problems in the prior art, and provide a power connector, including a plug and a socket; As for the locking assembly, the first housing is provided with a blind hole capable of accommodating the locking assembly, and an elastic member is provided in the blind hole, one end of the elastic member is connected to the bottom of the blind hole, and the other end is connected to the locking assembly. The elastic member is compressed; the socket includes a second housing, and one end of the second housing is provided with a step that can be snapped into the plug; the locking assembly includes a stopper, which can be locked with The assembly moves within the blind hole to engage or disengage the step.

As a further improvement of the above solution, a first arc surface is provided on the blocking portion, and the first arc surface extends from a side of the blocking portion relatively close to the step to a side away from the step.

As a further improvement of the above solution, a second arc surface is provided on the blocking portion, and the second arc surface extends from a side of the blocking portion relatively far away from the step to a side close to the step.

As a further improvement of the above solution, the locking assembly includes a guide post and a baffle integrally formed with the guide post, the stopper is arranged on the side wall of the guide post, and the opposing part between the stopper and the baffle The sides are inclined or concave arc-shaped.

As a further improvement of the above solution, the retaining portion is provided with an inclined surface and an arc surface, and the inclined surface is smoothly connected with the arc surface from top to bottom, the steps are clamped in the first housing, and the inclined surface and the arc face It should be in conflict with the steps.

As a further improvement of the above solution, at least one notch is formed on the step, and a protrusion capable of being inserted into the notch is provided on the first housing.

As a further improvement of the above solution, the inner wall of the blind hole is provided with a first groove, the locking assembly includes a guide post and a clamping block arranged on the guide post, and the clamping block protrudes from the outer wall of the guide post , the block can slide in the first groove.

As a further improvement of the above solution, an elastic member is provided between the bottom of the blind hole and the locking assembly, and the elastic member is normally compressed.

As a further improvement of the above solution, a second groove is provided on the outer wall of the guide post, and a gap is provided between the clamping block and the bottom of the second groove.

A method for assembling a power connector, comprising the following steps;

A. Put the elastic part into the blind hole or locking assembly;

B. Insert the locking assembly into the blind hole and crimp the elastic member. The locking assembly moves along the axial direction of the blind hole until the locking block snaps into the first groove.

Compared with the prior art, the beneficial effects of the present invention are: firstly, the power connector of the present invention inserts the locking assembly into the blind hole of the plug, and when the socket is connected to the plug, the steps of the socket can push against the blocking part to push The locking component moves inward, and after the step passes over the stopper, the locking component rebounds to engage the socket to ensure a tight and stable connection between the socket and the plug; secondly, the assembly method of the present invention can first put the elastic member into the locking component or a blind Then insert the locking component into the blind hole to crimp the elastic member, and the block is snapped into the first groove to prevent the locking component from popping out of the blind hole. When in use, the lock can be squeezed The tightening component moves toward the blind hole, so that the stopper on the locking component gives way to the step of the socket, and then the socket can be separated from the plug, which is easy to operate; moreover, the plug of the present invention is provided with a blind hole, and the locking component can Accommodated in the blind hole and moved along the blind hole, the locking component can be used as a push switch without going out from the plug, and there is no need to increase the process to seal the hole where the locking component is installed on the plug, reducing the structural parts of the locking component Reduce the number of components, reduce the production process of the plug, improve production efficiency, and reduce production costs.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is further described;

Fig. 1 is the exploded view of the structure of the plug of the embodiment of the present invention;

Fig. 2 is the exploded view of the structure of the socket of the embodiment of the present invention;

3 is a schematic structural view of a first housing according to an embodiment of the present invention;

4 is a schematic structural view of a locking assembly according to an embodiment of the present invention;

5 is a schematic cross-sectional view of one side of the power connector according to an embodiment of the present invention;

6 is a schematic cross-sectional view of the other side of the power connector according to the embodiment of the present invention;

Fig. 7 is the enlarged schematic view of place A in Fig. 5;

FIG. 8 is an enlarged schematic view of point B in FIG. 6 .

Detailed ways

This part will describe the specific embodiment of the present invention in detail, and the preferred embodiment of the present invention is shown in the accompanying drawings. Each technical feature and overall technical solution of the invention, but it should not be understood as a limitation on the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc. indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, several means one or more, and multiple means more than two. Greater than, less than, exceeding, etc. are understood as not including the original number, and above, below, within, etc. are understood as including the original number. If the description of the first and second is only for the purpose of distinguishing the technical features, it cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features relation.

In the description of the present invention, unless otherwise clearly defined, words such as setting, installation, and connection should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

A plug of a power connector, as shown in Figures 1 and 4, includes a first housing 10 and a locking assembly 11 movably arranged on the first housing 10, and the first housing 10 is provided with The blind hole 101 capable of accommodating the locking assembly 11, the inner wall of the blind hole 101 is provided with a first groove 102, the locking assembly 11 includes a guide post 111 and a block 112 protruding from the outer wall of the guide post 111, the block 112 Can be snapped into the first groove 102 and slide along the first groove 102, specifically, the blind hole 101 is provided with an elastic member 12, one end of the elastic member 12 is connected to the bottom of the blind hole 101, and the other end is connected to the guide post 111, Under normal conditions, the elastic member 12 is compressed and pushes the clamping block 112 to engage with one end of the first groove 102. In this embodiment, the elastic member 12 can be a spring commonly used in the market, and the locking assembly 11 can be inserted into the blind hole 101 along the The axis line of the blind hole 101 moves inward, and can be reset due to the elastic restoring force of the elastic member 12, and at the same time cannot fall out from the blind hole 101 because the clamping block 112 is engaged with one end of the first groove 102; further Yes, there is also a stopper 113 on the outer wall of the guide post 111, and the stopper 113 can move along with the guide post 111 in the blind hole 101 to engage with the step 201, so that the plug and the socket are connected stably. The stopper 113 can also follow the guide post 111 111 moves in the blind hole 101 to disengage from the step 201, so that the plug can be pulled out from the socket conveniently.

As shown in Figure 2, a power connector socket includes a second housing 20 and pins 21 arranged on the second housing 20, and one end of the second housing 20 is provided with a plug that can be snapped into the plug. The step 201, furthermore, the second housing 20 is also provided with a sealing ring 22 and a sealing rubber pad 23, the sealing ring 22 is arranged in the area between the pin 21 and the second housing 20, and its purpose is to ensure that the inside of the socket waterproof and dustproof effect; the outer wall of the second housing 20 is provided with a boss 202, the boss 202 can be circular or square, and the boss 202 is provided with a threaded hole or a through hole, which can be passed through Bolts or screws pass through the boss 202 to fix the socket on the terminal equipment, and the sealing rubber pad 23 is arranged in the area between the boss 202 and the terminal equipment, thereby ensuring the waterproof and waterproof between the power connector and the terminal equipment. Dust effect; one end of the plug on the pin 21 is provided with an isolation block 24, which can be inserted into the pin 21, and the isolation block 24 needs to be pulled out during use to realize the connection between the plug and the socket. The function of the isolating block 24 is to prevent fingers from touching the contact terminals, avoiding damage to the human body due to the conduction of the socket, and avoiding moisture caused by the human body touching the contact terminals, making the conductive contact between the socket and the plug unstable.

As shown in FIG. 6 and FIG. 8 , the blocking portion 113 is provided with a first arc surface 1131, and the first arc surface 1131 extends from the side of the blocking portion 113 relatively close to the step 201 and away from the side of the step 201. Specifically, the The protrusion height of the first arc surface 1131 on the side relatively close to the step 201 is smaller than the protrusion height on the side far away from the step 201 , that is, when the step 201 is inserted into the first housing 10 along with the second housing 20 , the step 201 gradually squeezes the locking assembly 11 along the first arc surface 1131, so that the step 201 can continue to move toward the inside of the first housing 10 and cross the blocking portion 113; preferably, the blocking portion 113 is provided with a second arc surface 1132, The second arc surface 1132 extends from the side of the retaining portion 113 that is relatively far away from the step 201 and is close to the side of the step 201. Specifically, the protrusion height of the second arc surface 1132 on the side relatively far away from the step 201 is smaller than that of the second arc surface 1132 that is relatively close to the step. 201, that is, when the step 201 separates from the first housing 10 with the second housing 20, the step 201 gradually squeezes the locking assembly 11 along the second arc surface 1132, so that the step 201 can continue to move toward the The first casing 10 moves outside and crosses over the blocking portion 113 .

As a further improvement of the above solution, as shown in FIG. 1, the plug also includes a lug 13 fixed in the first housing 10 and a terminal 14 that is in contact with the lug 13. Preferably, the axis of the terminal 14 Perpendicular to the axis of the lug 13, the pin 21 can be inserted into the terminal 14 to realize the conductive connection between the plug and the socket. Preferably, the end of the terminal 14 in contact with the pin 21 is provided with a first sealing ring 15 to ensure the waterproof sealing between the pin 21 and the terminal 14; preferably, the end of the lug 13 exposed outside the first housing 10 is sleeved with a sealing coil 16, and the honeybee coil is provided with a rear shell 17, The rear shell 17 can be fixed to the first housing 10 through threaded connection. In specific use, the cable can be plugged or crimped to one end of the lug 13, and then the rear shell 17 can be screwed onto the first housing 10. To compress the cable and the lug 13 to ensure good contact between the cable and the lug 13, further, a second sealing ring 18 is also provided between the rear shell 17 and the first housing 10 to ensure that the rear shell 17 and the first shell 10 are in good contact with each other. Watertight sealing between the first housings 10 .

As shown in Figure 3 and Figure 4, the first groove 102 is rectangular, the end surface of the block 112 relatively close to the inner wall of the blind hole 101 is arc-shaped and the arc-shaped block 112 is accommodated in the first groove 102, the arc The shape is preferably a concave arc shape, and the middle part of the clamping block 112 is concave toward the axis of the guide post 111, that is, the outer wall of the arc surface is concave inward, and the end surface of the clamping block 112 clamped into the first groove 102 is The purpose of the vertical surface is to insert the locking assembly 11 into the blind hole 101, and the concave arc surface of the block 112 is not in contact with the inner wall of the blind hole 101, so that it is more convenient to insert the locking assembly 11 into the blind hole 101. In the blind hole 101, after the locking component 11 moves into the blind hole 101 to crimp the block 112, the block 112 is pressed against the inner wall of the blind hole 101 to generate elastic deformation toward the axis of the locking component 11, and the lock The tight component 11 is plugged into the vertical surface of the clamping block 112 and clamped into the first groove 102, the clamping block 112 is separated from the inner wall of the blind hole 101 and reset due to elastic deformation, so that the clamping block 112 is completely clamped into the first groove 102. In the groove 102, the locking assembly 11 can continue to be inserted inward at this time, and when it is pulled out, the vertical surface of the clamping block 112 abuts against the end surface of the first groove 102 and cannot be taken out, thus ensuring the lock The tight component 11 moves stably in the blind hole 101 .

As a further improvement of the above scheme, as shown in Figure 4 and Figure 7, a second groove 1111 is provided on the outer wall of the guide post 111, and the gap between the block 112 and the bottom of the second groove 1111 is set, specifically, locked The component 11 is inserted into the blind hole 101 so that the clamping block 112 is pressed against the inner wall of the blind hole 101, and the clamping block 112 can be deformed or moved in a direction relatively close to the axis of the guide post 111, that is, the clamping block 112 can face the second concave Move in the groove 1111 to avoid the inner wall of the blind hole 101, so that the locking assembly 11 can be completely inserted into the blind hole 101; 111 can be made of plastic material with certain elastic deformation ability.

As a further improvement of the above solution, as shown in Figure 4 and Figure 5, the locking assembly 11 also includes a baffle 1112 integrally formed with the guide post 111, the baffle 1112 can block the blind hole 101 and move in the blind hole 101 , in this embodiment, only the locking assembly 11 needs to be inserted into the blind hole 101 to realize the movement of the guide post 111 in the blind hole 101, and the blind hole 101 is blocked by the baffle plate 1112 to ensure the dustproof inside the plug Effect: Preferably, the end face of the baffle plate 1112 that is relatively far away from the guide post 111 does not protrude from the blind hole 101. When the socket is connected to the plug, the step 201 of the socket squeezes the stopper 113 of the locking assembly 11 to drive the locking assembly 11 toward the blind hole. 101, after the socket and the plug are stably connected, the locking assembly 11 is reset due to the elastic restoring force of the elastic member 12; when the plug needs to be separated from the socket, the locking assembly 11 can be squeezed so that the locking assembly 11 faces blind Moving in the hole 101, the blocking part 113 moves inward with the locking assembly 11 and gives way to the step 201, so that the plug and the socket are separated; and the blocking plate 1112 does not extend out of the blind hole 101 under normal conditions, which can avoid misoperation and prevent pressing To the baffle 1112 so that the plug is separated from the socket, causing a quality accident.

As a further improvement of the above scheme, as shown in Figure 1 and Figure 4, the stopper 113 gradually protrudes from one end of the stopper 1112 to the other end, and the stopper 1112 is arranged obliquely relative to one end of the stopper 113, that is, the stopper 113 and The opposite sides between the baffles 1112 are all inclined or arc-shaped. At this time, a concave arc-shaped extension surface is formed between the baffle 113 and the baffle 1112, and the step 201 can move from the concave arc-shaped extension surface. At this time, the step 201 gradually squeezes the stopper 113, so that the stopper 113 moves along the axis of the guide post 111 and moves away from or avoids the step 201, so that the step 201 can pass over the stopper 113, and the second housing 20 and the first The housing 10 is stably connected.

As a further improvement of the above scheme, as shown in Figure 1, there are at least two clamping blocks 112 distributed along the circumferential direction on the side wall of the guide post 111, further, there are three clamping blocks 112, and the stopper 113 and the three The blocks 112 are evenly distributed on the side walls of the guide post 111, and the inner wall of the blind hole 101 is provided with three first grooves 102 matching the three blocks 112, and the side wall of the blind hole 101 also extends toward The outer guide groove, the stopper 113 can move in the guide groove; further, the first shell 10 is provided with an annular groove 103 for the insertion of the second shell 20, and the blind hole 101 is opened on the side of the annular groove 103 And the blocking portion 113 of the locking assembly 11 can protrude from the side wall of the annular groove 103 toward the center of the annular groove 103, the second housing 20 is inserted into the annular groove 103, and the step 201 can press the blocking portion 113, so that the lock The tightening assembly 11 is moved towards the inside of the blind hole 101 so that the stopper 113 gives way to the step 201 .

As a further improvement of the above solution, as shown in Figure 4, the retaining portion 113 is provided with an inclined surface 1133 and an arc surface 1134, the inclined surface 1133 is connected with the arc surface 1134 from top to bottom in a smooth transition, and the step 201 is clamped to the first housing 10, the inclined surface 1133 and the arc surface 1134 are in conflict with the step 201. Specifically, when the second housing 20 is inserted into the first housing 10, the step 201 corresponds to the inclined surface 1133 of the pressing stop part 113, and along the The inclined surface 1133 is gradually inserted toward the inside of the first housing 10, and the step 201 gradually interferes with the arc surface 1134. When the step 201 continues to be inserted, the step 201 is separated from the arc surface 1134, and the entire step 201 correspondingly falls into the bottom of the annular groove 103 and the position between the stopper 113.

As a further improvement of the above solution, as shown in FIG. 2, at least one notch 2011 is provided on the step 201, and a bump that can be inserted into the notch 2011 is provided on the first housing 10. In this embodiment, the step 201 There are two notches 2011 of different sizes on the top, and the first housing 10 is provided with protrusions that match the two notches 2011, the purpose of which is to ensure that the plug and the socket are inserted at a fixed angle and avoid misuse of the plug. with socket.

As a further improvement of the above solution, as shown in Figure 5 and Figure 7, the locking assembly 11 is provided with an inner cavity capable of accommodating the elastic member 12, the elastic member 12 is accommodated in the inner cavity and one end of the elastic member 12 protrudes out of the inner cavity The purpose of the cavity is to increase the stroke of the elastic member 12 to increase the stroke of the locking assembly 11 in the blind hole 101, and also make the internal structure of the plug compact.

A method for assembling a power connector, comprising the steps of:

A. Insert the elastic member 12 into the blind hole 101 or the locking assembly 11. Specifically, the elastic member 12 can be inserted into the blind hole 101 first, or the elastic member 12 can be inserted into the inner cavity of the locking assembly 11;

B. Insert the locking assembly 11 into the blind hole 101 and crimp the elastic member 12. The locking assembly 11 moves along the axis of the blind hole 101 until the block 112 snaps into the first groove 102. Specifically Yes, when the locking component 11 moves along the inside of the blind hole 101, the inner wall of the blind hole 101 presses against the block 112, so that the block 112 elastically deforms and moves into the second groove 1111, and the block 112 continues with the locking component 11 Moving toward the blind hole 101 and crossing the inner wall of the blind hole 101 to enter the first groove 102, the block 112 is accommodated in the first groove 102 due to its own elastic restoring force, so that the locking assembly 11 It is clamped in the blind hole 101 and can move inward along the axis of the blind hole 101, and when the locking assembly 11 moves outward, one end of the block 112 abuts against the side wall of the first groove 102, so that the locking The component 11 cannot be removed from the blind hole 101 .

In this embodiment, the locking assembly 11 is movably installed in the first housing 10 through the self-locking structure in which the locking block 112 matches the first groove 102, without opening a through hole on the first housing 10 and using The separable baffle 1112 is used for sealing, which reduces the number of parts of the plug, and reduces the process of fixing the separable baffle 1112 on the first housing 10 , reduces assembly procedures, and improves production efficiency.

The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the scope of knowledge of those skilled in the art .

Claims (10)

1. a kind of power connector, which is characterized in that including plug and socket；

The plug includes first shell (10) and the locking assembly (11) being removably set on first shell (10), institute It states and is provided with the blind hole (101) that can accommodate locking assembly (11) on first shell (10), be provided with elastic component in blind hole (101) (12), the bottom of one end connection blind hole (101) of elastic component (12), the other end connect locking assembly (11), normality lower elastic member (12) compressed；

The socket includes second shell (20), and one end of the second shell (20) is provided with and can snap fit onto plug Step (201)；

The locking assembly (11) includes stopper (113), and stopper (113) can be with locking assembly (11) in blind hole (101) Movement is to be clamped step (201) or be detached from step (201).

2. a kind of power connector according to claim 1, which is characterized in that be provided with first on the stopper (113) Cambered surface (1131), first cambered surface (1131) are laterally away from step from the one of stopper (113) relatively close step (201) (201) side extends.

3. a kind of power connector according to claim 1 or 2, which is characterized in that be provided on the stopper (113) Two cambered surfaces (1132), second cambered surface (1132) are relatively distant from a laterally closer step of step (201) from stopper (113) (201) side extends.

4. a kind of power connector according to claim 1, which is characterized in that the locking assembly (11) includes guide post (111) and with guide post (111) integrally formed baffle (1112), side wall of the stopper (113) setting in guide post (111) On, the opposite flank between the stopper (113) and baffle (1112) is oblique or is in concave arc shape.

5. a kind of power connector according to claim 4, which is characterized in that the stopper (113) is equipped with inclined-plane (1133) and arc surface (1134), the inclined-plane (1133) are connected smoothly with arc surface (1134) from top to bottom, step (201) in holding first shell (10), inclined-plane (1133) and arc surface (1134) are contradicted corresponding to step (201).

6. a kind of power connector according to claim 1, which is characterized in that offered at least on the step (201) One notch (2011) is provided with the convex block that can be plugged on notch (2011) on the first shell (10).

7. a kind of power connector according to claim 1, which is characterized in that the inner wall of the blind hole (101) is provided with First groove (102), the locking assembly (11) include the fixture block of guide post (111) and setting on guide post (111) (112), for the fixture block (112) from the outer wall protrusion of guide post (111), fixture block (112) being capable of the sliding in the first groove (102).

8. a kind of power connector according to claim 1 or claim 7, which is characterized in that the bottom of the blind hole (101) and lock It is provided with elastic component (12) between tight component (11), normality lower elastic member (12) is compressed.

9. a kind of power connector according to claim 7, which is characterized in that be arranged on the outer wall of the guide post (111) Have the second groove (1111), the slot bottom gap setting of the fixture block (112) and the second groove (1111).

10. a kind of assemble method of power connector, which is characterized in that including having the following steps；

It A. will be in elastic component (12) merging blind hole (101) or locking assembly (11)；

B. locking assembly (11) is plugged into blind hole (101) and is crimped elastic component (12), locking assembly (11) is along blind hole (101) Direction of axis line be moved to fixture block (112) and snap fit onto the first groove (102).