Connector with protective cover

Abstract

A connector with a protective cover comprises a plug part and a socket part, the plug part comprises a plug main body and the protective cover, and the protective cover sleeves the plug main body and can rotate; a plug-in end of the socket part is provided with a socket plug-in port and a boss surrounding the socket plug-in port, the side surface of the boss can be in fit contact with the inner wall of the protective cover, contact pins are arranged in the socket plug-in port and comprise a power pin, a grounding pin and a signal pin, the length of the signal pin is smaller than that of the power pin, and the length of the power pin is smaller than that of the grounding pin; the protective cover has a safe length, so that when the plug part and the socket part are plugged and unplugged, connection or disconnection of the signal pin and the corresponding jack contact element on the plug main body is in a space enclosed by the protective cover and the boss. The protective cover and the boss are locked and unlocked through a rotary locking structure. According to the utility model, locking and unlocking of the plug part and the socket part can be conveniently realized, and damage caused by arc discharge and electric leakage in a plugging process is avoided.

Description

Technical Field

[0001] The utility model belongs to the field of connectors, and in particular relates to a connector with a protective cover. Background Art

[0002] With the development of various industries, the application scope of connectors is becoming increasingly broad. Through connector adaptation, different usage scenarios can be addressed, including but not limited to the new energy vehicle industry. More and more electrical connectors are being used and are gradually becoming closer to end users. As a result, electrical connectors are gradually developing in the direction of miniaturization, convenience, and safety.

[0003] Existing connectors use either snap-fit or force-fit structures to prevent loosening. Snap-fit connections are complex, require more parts, and take up more space. Force-fit connections require greater force during initial insertion and removal, and after extended use, there's a risk of them falling off. Furthermore, both connectors currently carry the risk of electrical leakage during insertion and removal. Utility Model Content

[0004] The purpose of the utility model is to provide a connector with a protective cover to solve the problems existing in the above-mentioned snap connection or forced installation structure.

[0005] In order to achieve the above-mentioned object, the technical solution adopted by the present invention is as follows: a connector with a protective cover, comprising a plug part and a socket part that match each other, the plug part comprising a plug body and a protective cover, the protective cover being sleeved on the plug body and being rotatable relative to the plug body with the plug body as an axis; a socket-to-socket and a boss surrounding the socket-to-socket are provided at the plug end of the socket part, the side surface of the boss being able to fit in contact with the inner wall of the front end of the protective cover, the socket-to-socket being provided with contact pins, the contact pins comprising a power pin, a ground pin and a signal pin, the length of the signal pin being shorter than the length of the power pin, and the length of the power pin being shorter than the length of the ground pin;

[0006] The protective cover has a safe length so that during the plug and socket parts insertion and removal process, the connection or disconnection between the signal pin and the corresponding socket contact on the plug body is within the protective space enclosed by the protective cover and the boss;

[0007] Its beneficial effects are as follows: when the plug part and the socket part of the utility model are plugged in, the ground pin is connected to the corresponding socket contact of the plug part, followed by the power pin, and finally the signal pin. After the signal pin is connected, the plug part and the socket part are energized; because the protective cover has a certain safety length and the signal pin of the socket part is the shortest, when the protective cover contacts the boss to form a protective space, the signal pin is not in contact with the socket of the plug body and is connected. At this time, the signal pin is continued to be connected, and the arc generated by the power on of the plug part and the socket part is confined to the protective space; similarly, when the plug part is unplugged, the signal pin is disconnected first. At this time, the protective cover and the boss are still in contact, and the arc generated by the power off of the plug part and the socket part is confined to the protective space, thereby avoiding the arc leakage during the plug and unplug process.

[0008] Furthermore, the protective cover and the boss are locked and unlocked by a rotary locking structure.

[0009] The beneficial effects are as follows: the protective cover and the boss are locked and fixed by the rotary locking structure; the locking process only requires rotating the protective cover, which is easy to operate; and the locking and unlocking processes are quick and convenient.

[0010] As the first structural form of the rotary locking structure, the locking structure includes a first locking buckle arranged on the inner wall of the protective cover and a first locking groove arranged on the side of the boss. The boss is also provided with a first notch, which passes through the end face of the boss and is connected to the first locking groove in the circumferential direction.

[0011] Its beneficial effect is that when the plug is locked, the first locking buckle enters the position on one side of the first locking groove through the first notch, and then rotates, the first locking buckle is screwed into the first locking groove to achieve axial locking and fixation.

[0012] Furthermore, a first anti-slip protrusion is provided on the first locking buckle, and a second anti-slip protrusion is provided on the side of the first locking groove. When the first locking buckle is screwed into the first locking groove, the first anti-slip protrusion passes over the second anti-slip protrusion, thereby realizing the locking of the first locking buckle in the circumferential direction within the first locking groove.

[0013] Its beneficial effect is that when the first locking buckle is screwed into the first locking groove, the first anti-slip protrusion passes over the second anti-slip protrusion, which can realize the locking of the first locking buckle in the circumferential direction of the first locking groove, thereby preventing the protective cover from rotating out of the first locking groove due to vibration, etc. Only when the protective cover is rotated in the opposite direction under the action of external force, so that the first anti-slip protrusion passes over the second anti-slip protrusion in the opposite direction, can the lock of the first locking buckle in the circumferential direction be released.

[0014] At the same time, the cooperation between the first anti-slip protrusion and the second anti-slip protrusion can also provide feedback on the operational feel during the rotation of the protective cover.

[0015] Furthermore, the first anti-slip protrusion and the second anti-slip protrusion are protrusions with arc-shaped contact surfaces.

[0016] The beneficial effect is that the first anti-slip protrusion is convenient for passing over the second anti-slip protrusion.

[0017] As a second structural form of the rotary locking structure, an anti-slip protrusion is provided on the first locking buckle, and an anti-slip groove is provided on the side of the first locking groove; or, an anti-slip groove is provided on the first locking buckle, and an anti-slip protrusion is provided on the side of the first locking groove; the anti-slip protrusion and the anti-slip groove realize the locking of the first locking buckle in the circumferential direction of the first locking groove through convex-concave cooperation.

[0018] The beneficial effect is that the first locking buckle and the first locking groove are locked and fixed by utilizing the convex-concave matching structure, which makes it easy for the implementer to select a suitable locking method according to the actual situation.

[0019] As a third structural form of the rotary locking structure, the locking structure includes a second locking groove arranged on the inner wall of the protective cover and a second locking buckle arranged on the side of the boss. The inner wall of the protective cover is also provided with a second notch extending along the inner wall of the protective cover, and the bottom of the second notch is connected to the second locking groove in the circumferential direction.

[0020] Its beneficial effect is: compared with the first structure, the third structure interchanges the setting positions of the locking groove and the locking buckle, and the first locking buckle is set on the boss to become the second locking buckle, and the first locking groove is set on the protective cover to become the second locking groove, which can also play the role of rotational locking and rotational unlocking.

[0021] The protective cover is exposed on the front end surface of the plug body.

[0022] The beneficial effect is that when the plug part and the socket part are plugged in, the plug body contacts the socket-to-socket opening of the socket part before the protective cover, which can play a guiding role in the plugging.

[0023] A plug fixing cover is fixedly connected inside the protection cover, and the plug fixing cover abuts against the plug body.

[0024] The beneficial effect is that the plug fixing cover can limit the relative positions of the protective cover and the plug body in the axial direction.

[0025] The protective cover is conical in shape, with a small diameter end movably sleeved on the plug body and a large diameter end facing the plug-in direction of the plug part.

[0026] The beneficial effect is that a specific shape of the protective cover is provided, which is convenient for implementers to select and implement according to actual conditions.

[0027] The protective cover is cylindrical, one end of which is movably sleeved on the plug body, and the other end faces the plugging direction of the plug part.

[0028] The beneficial effect is that another specific shape of the protective cover is provided, which is convenient for implementers to choose according to actual conditions.

[0029] The beneficial effects of the present invention are as follows: 1. During the plugging and unplugging process of the plug part of the present invention, the protective cover can cooperate with the boss to form a protective space, thereby avoiding damage caused by arc leakage during power on and off.

[0030] 2. In the utility model, the plug part and the socket part are locked by rotating the protective cover. The locking structure is hidden inside the protective cover, which takes up less space and has good safety. The locking and unlocking process only requires rotating the protective cover, which is easy to operate. After locking, the protrusions and protrusions or the protrusions and grooves are used to limit the position, avoiding disengagement in the natural state. The limit can be released by applying a little force manually, and the protective cover can be disengaged from the socket part.

[0031] 3. The utility model adopts the contact form of pins and sockets, which makes plugging and unplugging more labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic structural diagram of the plug portion of the present invention;

[0033] Figure 2 AA is a cross-sectional view of the plug portion of the present invention;

[0034] Figure 3 This is an exploded diagram of the plug structure of the present invention;

[0035] Figure 4 This is an axonometric view of the plug end of the plug part of the utility model;

[0036] Figure 5 This is a schematic structural diagram of the socket portion of the present invention;

[0037] Figure 6 BB is a cross-sectional view of the socket portion of the present invention;

[0038] Figure 7 This is a partial view of the plug-in end of the socket portion of the present invention;

[0039] Figure 8 This is a cross-sectional view of the plug-in end of the socket portion of the present invention;

[0040] Figure 9 This is a schematic diagram of the plug and socket parts of the present invention;

[0041] Figure 10 This is a schematic diagram of the locking principle of the plug part and the socket part after being plugged into each other in the utility model;

[0042] Reference numerals in the figure: 100, plug part, 101, plug body, 102, protective cover, 103, plug fixing cover, 104, fixing screw, 105, first locking buckle, 106, first anti-drop protrusion;

[0043] 200. Socket part, 201. Socket to socket, 202. Boss, 203. First locking groove, 204. First notch, 205. Power pin, 206. Ground pin, 207. Signal pin, 208. Second anti-drop protrusion. DETAILED DESCRIPTION

[0044] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, but they are not intended to limit the present invention in any way.

[0045] Example 1: Refer to the attached Figure 1-7 As shown, a connector with a protective cover includes a plug part 100 and a socket part 200 that are mated with each other.

[0046] like Figure 1-4 As shown, the plug portion includes a plug body 101, a protective cover 102, a plug fixing cover 103, and fixing screws 104. The plug body 101 is the main part that realizes the electrical connection and has built-in socket contacts with different functions, which are used to contact the contacts in the socket portion 200 to achieve electrical connection and signal conduction. The protective cover 102 is conical and coaxially fits over the plug body 101, with the larger diameter end of the protective cover 102 facing the insertion direction of the plug portion 100. The plug fixing cover 103 is an annular cover plate that fits over the plug body 101, exposing the plug-end of the plug body 101. The plug fixing cover 103 is provided with a ring of axially raised positioning rings and a number of fixing holes. These holes correspond to the screw holes on the inner wall of the protective cover 102 and are secured by fixing screws 104. After being secured, the plug fixing cover 102 abuts against the end face of the plug body 101 via the positioning rings, achieving axial positioning of the plug body 101. After being connected, the protective cover 102 and the plug fixing cover 103 can rotate on the plug body 101, with the rotation axis being the central axis of the plug body 101.

[0047] For example Figure 1 、 2As shown, the plug end face of the plug body 101 protrudes from the large diameter end face of the protective cover 102. When the plug part 100 and the socket part 200 are plugged together, the plug body 101 contacts the socket of the socket part 200 before the protective cover 102, which can play a guiding role in the plugging.

[0048] like Figure 5-7 As shown, the socket portion 200 is provided with a socket-to-socket opening 201 and a boss 202 surrounding the socket-to-socket opening 201 at its plug-in end. The side surface of the boss 202 is a conical surface, which can fit in contact with the inner wall of the protective cover 102 .

[0049] For example Figure 8 As shown, the contact members in the socket-to-socket 201 of the socket part 200 are contact pins, which include a power pin 205, a ground pin 206 and a signal pin 207. The exposed portion of the ground pin 206 is the longest, followed by the power pin 205, and the exposed portion of the signal pin 207 is the shortest. In this way, when the plug part and the socket part are plugged into each other, the ground pin 206 first contacts the corresponding socket contact member on the plug body 101, followed by the power pin 205 contacting the corresponding socket contact member on the plug body 101, and finally the signal pin 207 contacts the corresponding socket contact member on the plug body 101. Only after the signal pin 207 is in contact and conductive, can power be supplied between the plug part 100 and the socket part 200. When the plug part 100 is unplugged from the socket part 200, the signal pin 207 is disconnected first, so that the plug part 100 and the socket part 200 are powered off.

[0050] Therefore, if Figure 9 As shown, during the insertion of the plug portion 100 and the socket portion 200, by controlling the axial length of the protective cover 102, when the large-diameter end of the protective cover 102 contacts the side of the boss 202 of the socket portion 200, the signal pin 207 does not contact the corresponding socket contact on the plug body 101, and no electricity is passed between the socket portion 200 and the plug portion 100. At this time, the protective cover 102 contacts the boss 202 to form a relatively closed protective space, which can prevent damage caused by arcing and leakage during the continued insertion of the plug portion 100 and the socket portion 200. Similarly, during the process of unplugging the plug portion 100, when the signal pin 207 breaks contact, the protective cover 102 and the boss 202 still maintain contact, so that the arcing and leakage during the power-off are isolated inside the protective cover 102, preventing damage caused by leakage outside.

[0051] Embodiment 2: Based on Embodiment 1, this embodiment provides a rotation locking structure for locking the plug part 100 and the socket part 200 .

[0052] like Figure 4As shown, two first locking buckles 105 are provided on the inner side of the large diameter end of the protective cover 102, and the two first locking buckles 105 are arranged opposite to each other.

[0053] like Figure 7 As shown, the side of the boss 202 is also provided with a first locking groove 203 that can accommodate the first locking buckle 105, and the side of the boss 202 is also provided with a first notch 204 that passes through the end face of the boss 202. The size of the first notch 204 is larger than the size of the first locking buckle 105, and the first locking groove 203 is connected with the first notch 204 in the circumferential direction, so that the first locking buckle 105 can enter the first locking groove 203 through the first notch 204, thereby realizing the locking of the plug part 100 and the socket part 200 after insertion.

[0054] In this embodiment, the locking process of the plug part 100 and the socket part 200 can refer to Figure 10 As shown, the first locking buckle 105 on the protective cover 102 is aligned with the first notch 204 on the socket part 200, and the plug body 101 is inserted into the socket-to-socket opening 201. When the plug part 100 cannot be inserted further, the protective cover 102 is rotated so that the first locking buckle 105 is screwed into the first locking groove 203, thereby achieving axial locking of the plug part 100.

[0055] Furthermore, the first locking buckle 105 is provided with a first anti-slip protrusion 106, and the side of the first locking groove 203 is provided with a second anti-slip protrusion 208. When the first locking buckle 105 is screwed into the first locking groove 203, the first anti-slip protrusion 106 passes over the second anti-slip protrusion 208, thereby locking the first locking buckle 105 in the circumferential direction of the first locking groove 203, preventing the protective cover 102 from rotating out of the first locking groove 203 due to vibration or the like. Only when the protective cover 102 is rotated in the opposite direction under the action of an external force, so that the first anti-slip protrusion 106 passes over the second anti-slip protrusion 208 in the opposite direction, can the circumferential lock on the first locking buckle 105 be released. At the same time, the cooperation between the first anti-slip protrusion 106 and the second anti-slip protrusion 208 can also provide feedback on the operational feel during the rotation of the protective cover 102.

[0056] Specifically, the first anti-slip protrusion 106 and the second anti-slip protrusion 208 are protrusions with arc-shaped contact surfaces.

[0057] Example 3: Compared with Example 2, this example is different in that the second anti-slip protrusion is replaced by an anti-slip groove, and the first anti-slip protrusion is inserted into the anti-slip groove to lock the protective cover in the circumferential direction.

[0058] Alternatively, the first anti-slip protrusion may be replaced by an anti-slip groove, and the second anti-slip protrusion is snapped into the anti-slip groove to lock the protective cover in the circumferential direction.

[0059] Example 4: Compared with Example 2, this example differs in that a second locking groove and a second notch are provided on the inner wall of the large diameter end of the protective cover 102, and the second locking buckle is provided on the side of the boss 202. The second locking groove and the first locking groove 203, the second notch and the first notch 204, the second locking buckle and the first locking buckle 105 have the same structure and matching relationship, and therefore can also play the role of rotational locking.

[0060] Embodiment 5: Different from the above embodiments, in this embodiment, the protective cover is cylindrical, truncated cone or other rotating body.

[0061] In the above-mentioned embodiments, the plug part 100 is a charging plug used for charging in a mode 2 charging device for new energy vehicles, and the socket part 200 is a control box.

[0062] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Those skilled in the art should understand that the specific implementation methods of the present invention can be modified or replaced with equivalents with reference to the above embodiments. Any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention are within the scope of protection of the pending claims.

Claims

1. A connector with a protective cover, comprising a plug portion (100) and a socket portion (200) that are mated with each other, characterized in that: The plug part (100) comprises a plug body (101) and a protective cover (102), wherein the protective cover (102) is sleeved on the plug body (101) and can rotate relative to the plug body (101) with the plug body (101) as an axis; the plug end of the socket part (200) is provided with a socket-to-socket (201) and a boss (202) surrounding the socket-to-socket (201), wherein the side surface of the boss (202) can be in contact with the inner wall of the front end of the protective cover (102), and the socket-to-socket (201) is provided with a contact pin, which comprises a power pin (205), a ground pin (206) and a signal pin (207), wherein the length of the signal pin (207) is less than the length of the power pin (205), and the length of the power pin (205) is less than the length of the ground pin (206); The protective cover (102) has a safe length so that during the plug part (100) and the socket part (200) are plugged in or out, the signal pin (207) and the corresponding socket contact on the plug body (101) are connected or disconnected within the protective space surrounded by the protective cover (102) and the boss (202).

2. The connector with a protective cover according to claim 1, wherein: The protective cover (102) and the boss (202) are locked and unlocked via a rotary locking structure.

3. The connector with a protective cover according to claim 2, wherein: The locking structure comprises a first locking buckle (105) arranged on the inner wall of the protective cover (102) and a first locking groove (203) arranged on the side of the boss (202); the boss (202) is also provided with a first notch (204); the first notch (204) passes through the end surface of the boss (202) and is connected to the first locking groove (203) in the circumferential direction.

4. The connector with a protective cover according to claim 3, wherein: A first anti-slip protrusion (106) is provided on the first locking buckle (105), and a second anti-slip protrusion (208) is provided on the side of the first locking groove (203). When the first locking buckle (105) is screwed into the first locking groove (203), the first anti-slip protrusion (106) passes over the second anti-slip protrusion (208), thereby achieving locking of the first locking buckle (105) in the circumferential direction of the first locking groove (203).

5. The connector with a protective cover according to claim 4, wherein: The first anti-slip protrusion (106) and the second anti-slip protrusion (208) are protrusions with arc-shaped contact surfaces.

6. The connector with a protective cover according to claim 3, wherein: The first locking buckle (105) is provided with an anti-slip protrusion, and the side of the first locking groove (203) is provided with an anti-slip groove; or the first locking buckle (105) is provided with an anti-slip groove, and the side of the first locking groove (203) is provided with an anti-slip protrusion; the anti-slip protrusion and the anti-slip groove achieve locking of the first locking buckle (105) in the inner circumferential direction of the first locking groove (203) through convex-concave cooperation.

7. The connector with a protective cover according to claim 2, wherein: The locking structure comprises a second locking groove provided on the inner wall of the protective cover (102) and a second locking buckle provided on the side of the boss (202); the inner wall of the protective cover (102) is further provided with a second notch extending along the inner wall of the protective cover (102); the bottom of the second notch is connected to the second locking groove in a circumferential direction.

8. The connector with a protective cover according to claim 1, wherein: The protective cover (102) is exposed on the front end surface of the plug body (101).

9. The connector with a protective cover according to claim 1, wherein: A plug fixing cover (103) is fixedly connected inside the protection cover (102), and the plug fixing cover (103) abuts against the plug body (101).

10. The connector with a protective cover according to any one of claims 1 to 9, characterized in that: The protective cover (102) is conical in shape, with a small diameter end movably sleeved on the plug body (101), and a large diameter end facing the plugging direction of the plug part (100).

11. The connector with a protective cover according to any one of claims 1 to 9, characterized in that: The protective cover (102) is cylindrical, with one end movably sleeved on the plug body (101) and the other end facing the plugging direction of the plug part (100).

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