A quick change plug

Abstract

The utility model discloses a quick change plug, including plug main part and the rotation sleeve assembly of setting in the plug main part outside, rotation sleeve assembly includes the rotation sleeve in the protection shell and protection shell, and the inner wall of rotation sleeve has the locking portion, and the drive portion on the outer wall of socket main part is along the insertion direction respectively first and lastly provided with the push inclined bench and the joint gear, and the rotation sleeve assembly still includes the operation piece who is connected with the protection shell and can synchronous rotation, and the transmission structure is equipped between operation piece and rotation sleeve, when quick change plug and socket main part are inserted, and the locking portion is driven to make rotation sleeve rotate by the push inclined bench, and after inserting in place, under the effect of elastic reset piece, the reverse rotation of rotation sleeve makes the locking portion joint in joint gear and realizes the locking, when quick change plug and socket main part separate, the utility model protection shell and operation piece are driven synchronous rotation by external force, and the joint of locking portion and joint gear is removed by transmission structure drive rotation sleeve rotation to unblock, and it is beneficial to quick plug and later maintenance.

Description

Technical Field

[0001] This utility model relates to the field of charging device technology, and more specifically, to a quick-change plug. Background Technology

[0002] With the increasing number of new energy vehicles, the demand for vehicle charging is growing daily, and users' demand for charging guns is also increasing. In order to meet customer needs, different quick-change plugs are used in different regions. Traditional quick-change plugs include a plug body and a rotating sleeve assembly that is rotatably sleeved outside the plug body. The rotating sleeve assembly includes a protective shell and a rotating sleeve that is detachably connected inside the protective shell and can rotate with the protective shell. During the repeated insertion and connection of the quick-change plug and the socket body, the rotating sleeve and the protective shell rotate synchronously, which causes damage to the connection between the two. It is necessary to replace the entire rotating sleeve. In severe cases, the protective shell also needs to be replaced. It is necessary to remove the rotating sleeve from the protective shell before replacement, which is not only inconvenient to replace, but also wastes costs.

[0003] Therefore, there is an urgent need to design a new quick-change plug to solve the above problems. Utility Model Content

[0004] One objective of this invention is to provide a new technical solution for quick-change plugs to address the problem that during repeated insertion and connection of the quick-change plug and socket body, the rotating sleeve and protective shell rotate synchronously, causing damage to the connection points. This necessitates replacing the entire rotating sleeve, and in severe cases, the protective shell also needs to be replaced. Removing the rotating sleeve from the protective shell before replacement is inconvenient and wasteful of costs.

[0005] This utility model provides a quick-change plug for insertion and mating with the socket body of an adapter. It includes a plug body and a rotating sleeve assembly rotatably sleeved outside the plug body. The rotating sleeve assembly includes a protective shell and a rotating sleeve at least partially housed within the protective shell and rotatable relative to the protective shell. An insertion space exists between the inner wall of the rotating sleeve and the outer wall of the plug body, and a resilient reset element is circumferentially disposed between them.

[0006] The inner wall of the rotating sleeve has a protruding locking part, and the outer wall of the socket body has a recessed driving part. The driving part has a pushing ramp and a locking position arranged sequentially along the insertion direction.

[0007] The rotating sleeve assembly also includes an operating component, which is connected to the protective shell and can rotate synchronously with it. A transmission structure is provided between the operating component and the rotating sleeve.

[0008] When the quick-connect plug is inserted into the socket body, the locking part is driven by the push ramp, causing the rotating sleeve to rotate in the first direction; after being inserted into place, under the reset action of the elastic reset member, the rotating sleeve rotates in the opposite direction, causing the locking part to engage with the engagement position to achieve locking;

[0009] When the quick-change plug is separated from the socket body, an external force drives the protective shell and the operating component to rotate synchronously. The operating component drives the rotating sleeve to rotate in the first direction through the transmission structure, so as to release the locking part from the locking position.

[0010] Optionally, the adapter front end has an annular plug portion, and the socket body is at least partially placed inside the annular plug portion. The protective shell is conical, and an annular partition extends axially toward the socket body from the inner wall of the larger diameter end. The annular partition divides the interior of the protective shell into a plug channel for the rotating sleeve to be inserted and a slot for the annular plug portion to be inserted. A sealing ring is provided between the inner wall of the annular plug portion and the slot.

[0011] Optionally, the operating element is an annular cover plate, which is detachably installed at the end of the annular partition and sleeved over at least a portion of the rotating sleeve.

[0012] Optionally, the transmission structure includes at least one radially outwardly protruding lug on the outer wall of the rotating sleeve, and an axially protruding pushing portion on the inner surface of the annular cover plate, the pushing portion circumferentially abutting against the lug.

[0013] When the protective shell is subjected to external force, it drives the annular cover plate to rotate. The pushing part rotates synchronously with the annular cover plate and pushes the lug to drive the rotating sleeve to rotate relative to the socket body in the first direction, so as to release the locking part from the snap-fit ​​position.

[0014] Optionally, there are multiple lugs, which are spaced apart circumferentially along the outer wall of the rotating sleeve, and the pushing part is disposed on the inner surface of the annular cover plate in a one-to-one correspondence with each lug.

[0015] Optionally, the inner surface of the annular cover plate is further provided with a mounting part with a through hole, and the inner wall of the annular partition plate is provided with a fixing part that protrudes radially inward corresponding to the mounting part. The fixing part is provided with a threaded hole, and a fastener passes through the through hole and is screwed into the threaded hole.

[0016] Optionally, the pushing part is at least one arc-shaped push plate surrounding the outer periphery of the mounting part.

[0017] Optionally, the inner surface of the annular cover plate is provided with a concave annular track, and the mounting part and the arc-shaped push plate are disposed within the annular track.

[0018] Optionally, the cross-section of the lug is fan-shaped, and the lug abuts against the outer arc surface of the arc-shaped push plate within the annular track, and can slide within the arc-shaped track.

[0019] Optionally, a cavity is provided on the side of the lug away from the bottom wall of the annular track, and at least one reinforcing rib is provided in the cavity.

[0020] The beneficial effects of this utility model are as follows:

[0021] 1. Traditional rotary sleeves and protective shells are directly detachably connected. During repeated insertion and removal of the quick-change plug and socket body, the connection point can be damaged, leading to the need to replace the rotary sleeve or both the rotary sleeve and protective shell, increasing replacement and maintenance costs. This invention adds an operating component connected to the protective shell, which rotates synchronously with it. A transmission structure is provided between the operating component and the rotary sleeve. When the quick-change plug is separated from the socket body, external force drives the protective shell and operating component to rotate synchronously. The operating component, through the transmission structure, drives the rotary sleeve to rotate in a first direction, releasing the locking part from the latching position. This separates the traditional integral rotary sleeve into an independent rotary sleeve and operating component. The operating component is connected to the protective shell, and by driving the rotary sleeve to rotate, it releases the locking part from the latching position. The rotary sleeve is not directly connected to the protective shell. If the rotary sleeve is damaged during repeated insertion and removal of the socket body and quick-change plug, it can be directly replaced, simplifying replacement and reducing maintenance costs.

[0022] 2. The adapter of this utility model has an annular plug-in portion at its front end, and the socket body is at least partially disposed within the annular plug-in portion. An axially extending annular partition is provided inside the protective shell, dividing its interior into a plug-in channel for a rotating sleeve to be inserted and a slot for the annular plug-in portion to be inserted. A sealing ring is provided between the inner wall of the annular plug-in portion and the slot.

[0023] When the quick-connect plug is inserted into the socket body, the locking part is driven by the push ramp, causing the rotating sleeve to rotate independently in the first direction. After insertion, under the reset action of the elastic reset member, the rotating sleeve rotates independently in the opposite direction, causing the locking part to engage in the engagement position to achieve locking. The rotating sleeve rotates independently, while the protective shell does not rotate with it. During the insertion process of the quick-connect plug and the socket body, the protective shell does not rotate, reducing wear on the sealing ring, extending the service life of the sealing ring, ensuring the sealing performance of the product, and thus ensuring electrical safety.

[0024] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0026] Figure 1 This is an exploded structural diagram of the socket body of the quick-change plug and adapter of this utility model;

[0027] Figure 2 This is an exploded view of the socket body of the quick-change plug and adapter of this utility model;

[0028] Figure 3 This is a schematic diagram of the structure of the rotating sleeve, plug body, and socket body of this utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the protective shell of this utility model;

[0030] Figure 5 This is a cross-sectional view of the quick-change plug of this utility model;

[0031] Figure 6 This is a schematic diagram of the structure of the annular cover plate of this utility model;

[0032] Figure 7 This is a schematic diagram of the assembly structure of the annular cover plate and the rotating sleeve of this utility model.

[0033] The diagram is marked as follows:

[0034] 10. Quick-change plug; 11. Plug body; 111. Elastic reset element; 12. Rotating sleeve; 121. Lug; 122. Cavity; 123. Reinforcing rib; 124. Locking part; 13. Annular cover plate; 131. Pushing part / arc-shaped push plate; 132. Mounting part; 1321. Through hole; 133. Annular track; 14. Protective shell; 141. Annular partition plate; 1411. Fixing part; 1412. Threaded hole; 142. Insertion channel; 143. Slot; 15. Fastener; 16. Insertion space; 20. Socket body; 21. Drive part; 211. Pushing ramp; 212. Snap-fit ​​stop; 30. Annular insertion part; 40. Sealing ring. Detailed Implementation

[0035] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0036] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0037] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0038] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0039] According to the first aspect of this utility model, as Figures 1-7 As shown, a quick-change plug 10 is provided for insertion and mating with the socket body 20 of an adapter. It includes a plug body 11 and a rotating sleeve 12 assembly rotatably sleeved outside the plug body 11. The rotating sleeve 12 assembly includes a protective shell 14 and a rotating sleeve 12 at least partially housed within the protective shell 14 and rotatable relative to the protective shell 14. An insertion space 16 is provided between the inner wall of the rotating sleeve 12 and the outer wall of the plug body 11, and a resilient reset member 111 is circumferentially disposed between them. A locking portion 124 protrudes from the inner wall of the rotating sleeve 12. A recessed driving portion 21 is provided on the outer wall of the socket body 20. A pushing ramp 211 and a locking stop 212 are sequentially disposed within the driving portion 21 along the insertion direction. The device also includes an operating component, which is connected to the protective shell 14 and can rotate synchronously with it. A transmission structure is provided between the operating component and the rotating sleeve 12. When the quick-change plug 10 is inserted into the socket body 20, the locking part 124 is driven by the push ramp 211, causing the rotating sleeve 12 to rotate in the first direction. After insertion, under the reset action of the elastic reset component 111, the rotating sleeve 12 rotates in the opposite direction, causing the locking part 124 to engage with the engagement position 212 to achieve locking. When the quick-change plug 10 is separated from the socket body 20, an external force drives the protective shell 14 and the operating component to rotate synchronously. The operating component drives the rotating sleeve 12 to rotate in the first direction through the transmission structure to release the engagement of the locking part 124 with the engagement position 212.

[0040] With the increasing number of new energy vehicles, the demand for vehicle charging is growing daily, and the demand for charging guns is also increasing. In order to meet customer needs, different quick-change plugs 10 are used in different regions. The traditional quick-change plug 10 includes a plug body 11 and a rotating sleeve 12 assembly that is rotatably sleeved outside the plug body 11. The rotating sleeve 12 assembly includes a protective shell 14 and a rotating sleeve 12 that is detachably connected inside the protective shell 14 and can rotate with the protective shell 14. During the repeated insertion and connection of the quick-change plug 10 and the socket body 20, the rotating sleeve 12 and the protective shell 14 rotate synchronously, which causes damage to the connection between the two. The rotating sleeve 12 needs to be replaced as a whole. In severe cases, the protective shell 14 also needs to be replaced. The rotating sleeve 12 needs to be removed from the protective shell 14 before replacement, which is not only inconvenient to replace, but also wastes costs to replace the entire rotating sleeve 12.

[0041] In traditional designs, the rotating sleeve 12 and protective shell 14 are directly detachably connected. However, during repeated insertion and removal of the quick-change plug 10 and the socket body 20, the connection point can become damaged, necessitating the replacement of either the rotating sleeve 12 or both the rotating sleeve 12 and the protective shell 14, leading to increased replacement and maintenance costs. This invention adds an operating component connected to the protective shell 14, which rotates synchronously with it. A transmission structure is provided between the operating component and the rotating sleeve 12. When the quick-change plug 10 is separated from the socket body 20, external force drives the protective shell 14 and the operating component to rotate synchronously. The rotating sleeve 12 is driven to rotate in the first direction by the transmission structure to release the locking part 124 from the locking position 212. The traditional integral rotating sleeve 12 is separated into an independent rotating sleeve 12 and an operating component. The operating component is connected to the protective shell 14. The rotating sleeve 12 is rotated by the operating component to release the locking part 124 from the locking position 212. The rotating sleeve 12 is not directly connected to the protective shell 14. If the rotating sleeve 12 is damaged during the repeated insertion and removal of the socket body 20 and the quick-change plug 10, the rotating sleeve 12 can be directly replaced, which is convenient and has low maintenance cost.

[0042] In some embodiments, such as Figures 4-5 As shown, the adapter has an annular plug portion 30 at the front end, and the socket body 20 is at least partially placed inside the annular plug portion. The protective shell 14 is conical, and an annular partition 141 extends axially from the inner wall of the larger diameter end toward the socket body 20. The annular partition 141 divides the interior of the protective shell 14 into a plug channel 142 for the rotating sleeve 12 to be inserted and a slot 143 for the annular plug portion 30 to be inserted. A sealing ring 40 is provided between the inner wall of the annular plug portion 30 and the slot 143.

[0043] When the quick-connect plug 10 is inserted into the socket body 20, the locking part 124 is driven by the push ramp 211, causing the rotating sleeve 12 to rotate independently in the first direction. After being inserted into place, under the reset action of the elastic reset member 111, the rotating sleeve 12 rotates independently in the opposite direction, causing the locking part 124 to engage with the engagement position 212 to achieve locking. The rotating sleeve 12 rotates independently, and the protective shell 14 does not rotate with it. During the insertion process of the quick-connect plug 10 and the socket body 20, the protective shell 14 does not rotate, which reduces the wear on the sealing ring 40, extends the service life of the sealing ring 40, ensures the sealing performance of the product, and thus ensures electrical safety.

[0044] In some embodiments, such as Figure 1 , Figure 2 and Figure 5 As shown, the operating component is an annular cover plate 13, which is detachably installed at the end of the annular partition 141 and sleeved over at least part of the rotating sleeve 12.

[0045] The operating element can also be constructed as a lever or a button. This design is not limited to the above-mentioned methods. Other forms that can satisfy the design of pushing the rotating sleeve 12 are also included.

[0046] In some embodiments, such as Figures 6-7 As shown, the transmission structure consists of at least one radially outwardly protruding lug 121 on the outer wall of the rotating sleeve 12, and an axially protruding pushing part 131 on the inner surface of the annular cover plate 13. The pushing part 131 abuts against the lug 121 circumferentially. When the protective shell 14 is subjected to external force, it drives the annular cover plate 13 to rotate. The pushing part 131 rotates synchronously with the annular cover plate 13 and pushes the lug 121 to drive the rotating sleeve 12 to rotate relative to the socket body 20 in the first direction, so as to release the locking part 124 from the locking position 212.

[0047] In some embodiments, such as Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, there are multiple lugs 121, which are spaced apart circumferentially along the outer wall of the rotating sleeve 12. The pushing part is disposed on the inner surface of the annular cover plate 13 in a one-to-one correspondence with the lugs 121.

[0048] The design of multiple lugs 121 and the pusher enhances the push of the operating component on the rotating sleeve 12, and the circumferential spacing can evenly distribute the pushing force, making the rotation of the rotating sleeve 12 more stable.

[0049] In some embodiments, such as Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, the inner surface of the annular cover plate 13 is also provided with a mounting part 132 with a through hole 1321, and the inner wall of the annular partition plate 141 is provided with a fixing part 1411 that protrudes radially inward corresponding to the mounting part 132. The fixing part 1411 is provided with a threaded hole 1412, and a fastener 15 passes through the through hole 1321 and is screwed into the threaded hole 1412.

[0050] The annular cover plate 13 is installed on the annular partition plate 141 by fastener 15, which facilitates subsequent disassembly, maintenance and replacement.

[0051] In some embodiments, such as Figure 6 and Figure 7 As shown, the pushing part 131 is at least one arc-shaped push plate 131 surrounding the outer periphery of the mounting part 132.

[0052] The pusher 131 surrounds the mounting part 132, making the pusher structure more stable. The pusher 131 is either an arc-shaped pusher plate 131 surrounding the mounting part 132 or two arc-shaped pusher plates 131 symmetrically arranged around the mounting part 132.

[0053] In some embodiments, such as Figure 6 and Figure 7 As shown, the inner surface of the annular cover plate 13 is provided with a concave annular track 133, and the mounting part 132 and the arc-shaped push plate 131 are disposed in the annular track 133.

[0054] In some embodiments, such as Figure 7 As shown, the cross-section of the lug 121 is fan-shaped. The lug 121 abuts against the outer arc surface of the arc-shaped push plate 131 within the annular track 133 and can slide within the arc-shaped track.

[0055] The fan-shaped lug 121 better contacts the outer arc surface of the arc-shaped push plate 131, making the motion transmission more stable. The arc-shaped track provides the motion trajectory for the lug 121, which is more conducive to the rotation of the rotating sleeve 12.

[0056] In some embodiments, such as Figure 7 As shown, a cavity 122 is provided on the side of the lug 121 away from the bottom wall of the annular track 133, and at least one reinforcing rib 123 is provided in the cavity 122.

[0057] The cavity 122 makes the rotating sleeve 12 lighter overall, and the design of the reinforcing rib 123 can enhance the service life of the lug 121.

[0058] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A quick-connect plug for mating with the socket body of an adapter, characterized in that, The device includes a plug body and a rotating sleeve assembly rotatably fitted over the plug body. The rotating sleeve assembly includes a protective shell and a rotating sleeve at least partially housed within the protective shell and rotatable relative to the protective shell. An insertion space exists between the inner wall of the rotating sleeve and the outer wall of the plug body, and a resilient reset element is circumferentially disposed between them. The inner wall of the rotating sleeve has a protruding locking part, and the outer wall of the socket body has a recessed driving part. The driving part has a pushing ramp and a locking position arranged sequentially along the insertion direction. The rotating sleeve assembly also includes an operating component, which is connected to the protective shell and can rotate synchronously with it. A transmission structure is provided between the operating component and the rotating sleeve. When the quick-connect plug is inserted into the socket body, the locking part is driven by the push ramp, causing the rotating sleeve to rotate in the first direction; after being inserted into place, under the reset action of the elastic reset member, the rotating sleeve rotates in the opposite direction, causing the locking part to engage with the engagement position to achieve locking; When the quick-change plug is separated from the socket body, an external force drives the protective shell and the operating component to rotate synchronously. The operating component drives the rotating sleeve to rotate in the first direction through the transmission structure, so as to release the locking part from the locking position.

2. A quick-change plug according to claim 1, characterized in that, The adapter has an annular plug-in portion at the front end, and the socket body is at least partially placed inside the annular plug-in portion. The protective shell is conical, and an annular partition extends axially toward the socket body from the inner wall of the larger diameter end. The annular partition divides the interior of the protective shell into a plug-in channel for the rotating sleeve to be inserted and a slot for the annular plug-in portion to be inserted. A sealing ring is provided between the inner wall of the annular plug-in portion and the slot.

3. A quick-change plug according to claim 2, characterized in that, The operating component is an annular cover plate, which is detachably installed at the end of the annular partition and sleeved over at least part of the rotating sleeve.

4. A quick-change plug according to claim 3, characterized in that, The transmission structure comprises at least one radially outwardly protruding lug on the outer wall of the rotating sleeve, and an axially protruding pushing part on the inner surface of the annular cover plate, the pushing part abutting circumferentially against the lug. When the protective shell is subjected to external force, it drives the annular cover plate to rotate. The pushing part rotates synchronously with the annular cover plate and pushes the lug to drive the rotating sleeve to rotate relative to the socket body in the first direction, so as to release the locking part from the snap-fit ​​position.

5. A quick-change plug according to claim 4, characterized in that, There are multiple lugs, which are spaced apart circumferentially along the outer wall of the rotating sleeve. The pushing part is disposed on the inner surface of the annular cover plate in a one-to-one correspondence with each lug.

6. A quick-change plug according to claim 4, characterized in that, The inner surface of the annular cover plate is also provided with a mounting part with a through hole, and the inner wall of the annular partition plate is provided with a fixing part that protrudes radially inward corresponding to the mounting part. The fixing part is provided with a threaded hole, and a fastener passes through the through hole and is screwed into the threaded hole.

7. A quick-change plug according to claim 6, characterized in that, The pushing part is at least one arc-shaped push plate surrounding the outer periphery of the mounting part.

8. A quick-change plug according to claim 7, characterized in that, The inner surface of the annular cover plate is provided with a concave annular track, and the mounting part and the arc-shaped push plate are disposed within the annular track.

9. A quick-change plug according to claim 8, characterized in that, The lug has a fan-shaped cross-section and abuts against the outer arc surface of the arc-shaped push plate within the annular track, and can slide within the annular track.

10. A quick-change plug according to claim 9, characterized in that, A cavity is provided on the side of the lug away from the bottom wall of the annular track, and at least one reinforcing rib is provided in the cavity.

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