A connector

Abstract

The application discloses a connector, comprising a socket and a plug, the socket is provided with a limiting part, the plug comprises a plug main body and a locking device arranged in the plug main body, the locking device cooperates with the limiting part to realize locking of the plug and the socket, the locking device comprises a button part on one side and two elastic arms extending from the button part to the other side and being arranged at intervals, the two elastic arms are provided with a locking part and a retaining part, the locking part cooperates with the limiting part to keep the plug and the socket in a locked state, and the retaining part is used for keeping the locking part on the plug; when the button part is pressed, the elastic arms abut against the plug main body, the button part moves to trigger elastic deformation of the elastic arms, the locking part is separated from the limiting part, so that the plug and the socket are changed from the locked state to an unlocked state. The two elastic arms of the locking device are deformed to realize unlocking of the plug and the socket, the overall structure of the locking device is simple, and unlocking operation is stable and reliable.

Description

Technical Field

[0001] This invention relates to the field of electrical connector technology, and in particular to an energy storage connector. Background Technology

[0002] In existing technology, connectors consist of two parts: a plug and a socket. To keep the plug and socket in the plugged-in state, a locking device is usually installed on the connector. The locking device keeps the plug and socket locked, thereby ensuring a stable electrical connection between the plug and socket. To unlock the locking device, a spring is usually installed. External force compresses the spring to deform it and unlock the locking device, thereby disengaging the plug and socket. However, this requires separate consideration of the installation and matching of the elastic element and the locking device, which increases the structural complexity and operational instability. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a connector with a simple locking device structure and stable and reliable unlocking operation.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A connector includes a socket and a plug. The socket has a limiting portion, and the plug includes a plug body and a locking device disposed within the plug body. The locking device cooperates with the limiting portion to lock the plug and the socket. The locking device includes a button portion on one side and two elastic arms extending from the button portion to the other side and spaced apart. The two elastic arms are provided with a locking portion and a retaining portion. The locking portion cooperates with the limiting portion to keep the plug and the socket in a locked state, and the retaining portion is used to hold the locking portion on the plug. When the button portion is pressed, the elastic arms abut against the plug body, the button portion moves to trigger the elastic arms to elastically deform, and the locking portion disengages from the limiting portion, thereby changing the plug and the socket from a locked state to an unlocked state.

[0005] Preferably, the two elastic arms are symmetrically arranged relative to the button portion, and two locking portions are symmetrically arranged on the two elastic arms relative to the button portion. The two locking portions are arranged opposite each other and their opposing surfaces are provided with arc-shaped contours to engage with the cylindrical outer contour of the socket for locking.

[0006] Preferably, two retaining portions are symmetrically arranged on the two elastic arms relative to the button portion, the retaining portions are located near the ends of the elastic arms, and the locking portions are located near the middle of the elastic arms, and the locking portions and retaining portions on the same elastic arm are located on the same side of the same elastic arm; or, two retaining portions are symmetrically arranged on the two elastic arms relative to the button portion, the retaining portions are located near the middle of the elastic arms, and the locking portions are located near the ends of the elastic arms, and the locking portions and retaining portions on the same elastic arm are located on different sides of the same elastic arm.

[0007] Preferably, the plug body is provided with a limiting boss. When the locking device is installed on the plug body, the retaining part cooperates with the limiting boss to retain the locking device on the plug body.

[0008] Preferably, the limiting boss has a guide surface, and when the button portion is pressed, the locking device moves along the guide surface to trigger the elastic arm to deform.

[0009] Preferably, the guide surface is an inclined surface, and the elastic arm is provided with a guide inclined surface adapted to the shape of the guide surface, and both inclined surfaces are set at the same angle to the horizontal direction.

[0010] Preferably, the locking part includes a locking boss and a deformable connecting part. When the button part is pressed, the button part squeezes the elastic arm to generate deformation. The elastic arm transmits the deformation to the deformable connecting part, thereby causing the locking boss to disengage from the limiting part, so as to change the locking device from the locked state to the unlocked state.

[0011] Preferably, the deformable connecting part is provided with a guide slope adjacent to the locking boss, and the plug body is provided with a guide surface for the guide slope to slide relative to each other.

[0012] Preferably, the plug body is provided with clearance grooves on both sides. When the button part is pressed by an external force, the elastic arm is triggered to deform to both sides respectively. The deformable connecting part extends into the clearance groove at least partially, and at the same time, the deformable connecting part drives the locking boss to disengage from the limiting part.

[0013] Preferably, the locking device has a guide structure near the locking boss, and the guide structure has a guide surface. When the plug and the socket begin to be inserted and engaged, the limiting part can move along the guide surface and squeeze the deformable connecting part to generate deformation, so that the limiting part extends into the locking part and locks with the locking boss.

[0014] Preferably, the locking device is a plastic part, and the button part, the locking part and the retaining part are integrally formed on the locking device. The retaining part and the limiting boss are configured such that when the locking device is pulled from the installation position inside the plug body to the outside of the plug body, the elastic arm will not deform, open and disengage from the limiting boss.

[0015] Preferably, the plug body has a receiving cavity, the locking device is installed in the receiving cavity, and the plug body has a through hole for the button portion to extend out.

[0016] Preferably, the surface of the plug body is provided with a countersunk hole adapted to the button portion, and when the locking portion is in the unlocked state, the button portion is located in the countersunk hole; or, the surface of the plug body is provided with a countersunk hole adapted to the button portion, and when the locking portion is in the locked state, the button portion is located in the countersunk hole.

[0017] Preferably, the socket further includes a socket body and a pin disposed within the socket body, and the plug further includes a metal terminal disposed within the plug body. The metal terminal includes a terminal body and a mating portion and a wiring portion disposed at both ends of the terminal body. The mating portion and the wiring portion are perpendicularly disposed. The mating portion has a mounting cavity. A watch strap finger is installed in the mounting cavity. A limiting structure is provided at the rear end of the mounting cavity, and a limiting protrusion is provided at the front end of the mounting cavity. The limiting structure is detachably installed at the rear end of the mounting cavity. The limiting structure includes an extension portion extending into the mounting cavity. The inner diameter of the limiting protrusion is equal to the inner diameter of the extension portion. The watch strap finger is located between the limiting protrusion and the extension portion, and there is a certain gap between the watch strap finger and the extension portion to achieve floating insertion between the watch strap finger and the pin.

[0018] Preferably, the terminal body is provided with a bending structure, the bending structure is located between the mating portion and the wiring portion, and the bending structure causes the wiring portion to be disposed away from the mounting cavity.

[0019] In summary, the advantages of this invention compared to the prior art are as follows: 1. By setting two elastic arms at intervals on the locking device, and placing the locking part and retaining part on the elastic arms, the elastic arms can be deformed by pressing the button, and the deformation is transmitted to the locking part, causing the locking part to disengage from the limiting part, thereby unlocking the plug and socket. This setting relies on the structure of the locking device itself to achieve unlocking, without the need for additional components, making the overall structure of the locking device simple. Furthermore, the locking device can change between different states simply by pressing, making operation simple and easy to implement. There is no need for additional complex installation and matching structures, and the unlocking operation is more stable and reliable.

[0020] 2. By symmetrically arranging the two elastic arms relative to the button, the force received by the button is transmitted more evenly to the elastic arms on both sides. At the same time, the locking parts symmetrically arranged on the elastic arms expand and deform to both sides to unlock, so that the unlocking process can be quickly achieved through a simple pressing operation.

[0021] 3. By setting a guide slope and guide surface with matching shape on the elastic arm and the plug body, the force of squeezing the button can be converted into the force of squeezing the elastic arm to slide along the guide surface, thereby guiding the deformation process of the locking device and promoting the deformation and unlocking of the locking part.

[0022] 4. The locking device can be stably fixed on the plug body by the cooperation of the retaining part and the limiting boss. Even if the locking device installed in the plug body is pulled outward by external force, the elastic arm will not deform and open, causing the elastic arm to disengage from the limiting boss.

[0023] 5. By providing a countersunk hole on the surface of the plug body that is compatible with the button part, the countersunk hole can provide space for the button part, preventing the button part from extending too far relative to the plug body, thereby reducing the probability of accidentally triggering the button part. Attached Figure Description

[0024] Figure 1 This is a perspective view of the connector in Example 1; Figure 2 This is a horizontal cross-sectional view of the connector in Example 1; Figure 3 This is a vertical sectional view of the connector in Embodiment 1; Figure 4 for Figure 3 A cross-sectional view along the AA direction; Figure 5 This is a structural diagram of the locking device in Example 1; Figure 6 This is a perspective view of the metal terminal of Example 1; Figure 7 This is a cross-sectional view of the metal terminal of Example 1; Figure 8 for Figure 7 A magnified view of the structure at point B in the middle; Figure 9 This is a perspective view of the connector in Example 2; Figure 10 for Figure 9 A magnified view of the structure at point C in the middle; Figure 11 This is a vertical sectional view of the connector in Embodiment 2; Figure 12 for Figure 11A magnified view of the structure at point D; Figure 13 This is a perspective view of the connector in Example 3; Figure 14 This is a radial cross-sectional view of the connector in Example 3; Figure 15 This is a structural diagram of the locking device in Example 3; Figure 16 This is a perspective view of the plug in Example 3; Figure 17 This is a perspective view of the socket in Example 3.

[0025] Reference numerals: 100-Socket; 110-Socket body; 111-Limiting part; 120-Pin; 200-Plug; 210-Plug body; 210a-First housing part; 210b-Second housing part; 211-Limiting boss; 2111-Guide surface; 212-Allowing groove; 213-Receiving cavity; 214-Counterhead; 215-Arc transition part; 2151-Hollow hole; 220-Locking device; 221-Button part; 222-Locking part; 2221-Locking boss; 2222-Deformable connection part; 2223-Guide slope; 223-Retaining part; S223-Retaining surface; α223-Retaining angle; 224-Guide structure; 225 - Open structure; 226 - Flexible arm; 230 - Metal terminal; 231 - Terminal body; 2311 - Bending structure; 232 - Connecting part; 2321 - Mounting cavity; 2322 - Limiting protrusion; 233 - Wiring part; 234 - Watch strap contact finger; 235 - Limiting structure; 2351 - Extension part; 240 - Gland connector; 300 - Cable. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0028] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention. Example 1

[0029] like Figure 1-5 As shown, the present invention provides an electrical connector, which is an energy storage connector, including a socket 100 and a plug 200. The socket 100 is provided with a limiting part 111. The plug 200 includes a plug body 210 and a locking device 220 disposed on the plug body 210. The locking device 220 cooperates with the limiting part 111 to lock the plug 200 to the socket 100. The locking device 220 includes a button part 221, a locking part 222, and a retaining part 223. The button part is located on one side of the locking device. The locking device 220 is provided with an opening structure 225, which extends to the locking part 222. Elastic arms 226 are provided on both sides of the opening structure 225, and the elastic arms 226 extend from the button part 222 to the other side and are spaced apart. Two locking parts, 222 and 223, are provided on the two elastic arms 226. The locking part 222 cooperates with the limiting part 111 to keep the plug 200 and the socket 100 in a locked state. The retaining part 223 is used to hold the locking device 220 on the plug body 210. When the button part 221 is pressed, the elastic arm 226 abuts against the plug body 210, and the locking device 220 moves relative to the plug body 210 to trigger the elastic arm 226 to generate elastic deformation. The deformation is transmitted to the locking part 222, and the locking part 222 disengages from the limiting part 111, thereby realizing the locking device 220 changing from the locked state to the unlocked state, so as to allow the plug 200 and the socket 100 to separate.

[0030] By setting two elastic arms at intervals on the locking device, and placing the locking part and retaining part on the elastic arms, the elastic arms can be deformed by pressing the button, and the deformation is transmitted to the locking part, causing the locking part to disengage from the limiting part, thereby unlocking the plug and socket. This setting relies on the structure of the locking device itself to achieve unlocking, without the need for additional components, making the overall structure of the locking device simple. Furthermore, the locking device can change between different states simply by pressing, making it easy to operate and eliminating the need for complex installation and fitting structures. The unlocking operation is also more stable and reliable.

[0031] like Figure 2 and Figure 3 As shown, the socket 100 includes a socket body 110. The limiting part 111 is an annular boss provided on the upper edge of the insulating shell of the socket body 110. When the plug 200 and the socket 100 are in a plugging and mating state, the locking part 222 of the locking device 220 is locked on the annular boss to prevent the socket 100 from disengaging from the plug 200. Figure 2 This diagram illustrates the plug and socket being in a locked state. Figure 3 This diagram illustrates the plug and socket being in an unlocked state.

[0032] like Figure 4 As shown, the plug body 210 is provided with a limiting boss 211. When the locking device 220 is installed on the plug body 210, the retaining part 223 cooperates with the limiting boss 211 to hold the locking device 220 on the plug body 210. Specifically, two limiting bosses 211 are symmetrically provided on the left and right sides of the plug body 210, and the locking device 220 is also provided with two corresponding retaining parts 223 to cooperate with the limiting bosses 211 on both sides respectively.

[0033] Specifically, such as Figure 5 As shown, two retaining portions 223 are symmetrically arranged on the two elastic arms 226 relative to the button portion 221. The retaining portions 223 are arranged near the end of the elastic arm 226, and the locking portion 222 is arranged near the middle of the elastic arm 226. The locking portion 222 and the retaining portion 223 on the same elastic arm 226 are arranged on the same side of the same elastic arm 226.

[0034] Specifically, such as Figure 4 As shown, the limiting boss 211 has a guide surface 2111. When the button part 221 is pressed, the holding part 223 of the locking device 220 moves along the guide surface 2111 to trigger the elastic arm 226 to deform. By providing the guide surface 2111 on the limiting boss 211 to guide the locking device 220, the deformation process of the locking part 222 is controllable, further ensuring the stability and reliability of the unlocking process.

[0035] Specifically, such as Figure 4 and Figure 5As shown, the guide surface 2111 is an inclined surface, and the elastic arm (226) of the locking device 220 also has a guide inclined surface 2223 adapted to the shape of the guide surface 2111. The inclination direction of both the guide surface and the guide inclined surface is from top to bottom and to both sides. Both inclined surfaces are at a certain angle to the horizontal direction, preferably an acute angle. By setting the mating surface of the limiting boss 211 and the locking device 220 to be an inclined surface adapted to the shape, the force of squeezing the button can be converted into the force of squeezing the elastic arm 226 to slide along the guide surface, thereby guiding the deformation process of the locking device to promote the deformation and unlocking of the locking part. It can also ensure that the contact area between the two is larger and the relative sliding is more stable. Setting the inclination angle of the two inclined surfaces to an acute angle can further promote the expansion and deformation of the locking part 222 to both sides, accelerate the unlocking process, and also save the pressing force.

[0036] Specifically, such as Figure 5 As shown, the locking device 220 is a plastic part. The button part 221, the locking part 222, and the retaining part 223 are integrally formed on the locking device 220. Two locking parts 222 and two retaining parts 223 are symmetrically arranged. The button part 221 is located between the two locking parts 222, and the side of the locking device 220 opposite to the button part 221 has an open structure. Optionally, the locking device can also be a metal part or made of other elastically deformable materials.

[0037] By placing the button portion 221 between the two locking portions 222, the forces on the two locking portions 222 are balanced, allowing for symmetrical deformation on both sides. This facilitates the locking portions 222 disengaging from the limiting portion 111 and unlocking. Furthermore, by designing an opening structure 225 on the opposite side of the button, the force received by the button portion is more easily transmitted to the elastic arms 226 on both sides through the opening structure, causing the locking portions to expand and deform to the sides, thus unlocking. Therefore, the unlocking process can be quickly achieved with a simple pressing operation. The button portion 221 is located at the top of the locking device 220. When the button portion 221 is pressed, the locking device 220 moves downward relative to the plug body 210, triggering the deformation of the locking portions 222 to achieve the unlocking operation.

[0038] like Figure 5 As shown, the locking device 220 has an overall annular structure with an opening structure 225 on one side. The locking part 222 is located in the middle of both sides of the locking device 220, and the retaining part 223 is located on both sides of the bottom opening of the locking device 220. The two elastic arms 226 are symmetrically arranged with respect to the button part 221. The two elastic arms 226 are symmetrically arranged with respect to the button part 221. The two locking parts 222 are arranged opposite each other and the opposite surfaces are provided with arc-shaped contours to cooperate with the cylindrical outer contour of the socket 100 for locking.

[0039] like Figure 5As shown, the locking part 222 includes a locking boss 2221 and a deformable connecting part 2222. When the button part 221 is pressed, the button part 221 compresses the elastic arm 226 to generate deformation. The elastic arm 226 transmits the deformation to the deformable connecting part 2222, thereby causing the locking boss 2221 to disengage from the limiting part 111, so as to change the locking device 220 from the locked state to the unlocked state. The deformable connecting part 2222 is provided with a guide slope 2223 adjacent to the locking boss 2221, and the plug body 210 is provided with a guide surface 2111 for the guide slope 2223 to slide relative to each other.

[0040] Specifically, such as Figure 1 As shown, the plug body 210 has a hollow structure on both sides to form a deformation clearance space for the locking part 222. The hollow structure is a clearance groove 212. When the button part 221 is pressed by an external force, the elastic arm 226 is triggered to expand and deform to both sides, so that the deformable connecting part 2222 extends into the clearance groove 212 at least partially. The clearance groove 212 can provide deformation accommodation space for the locking part 222. At the same time, the deformable connecting part 2222 drives the locking boss 2221 to disengage from the limiting part 111.

[0041] Specifically, such as Figure 5 As shown, a guide structure 224 is provided on each of the opposite sides of the locking device 220. The guide structure 224 is located on the locking part 222 and close to the locking boss 2221. Each guide structure 224 is provided with a guide surface. When the locking device 220 is in the initial position, that is, when the plug 200 and the socket 100 begin to be inserted and engaged, the limiting part 111 can move along the guide surface and squeeze the deformable connecting part 2222 to deform, so that the limiting part 111 extends into the locking part 222 and locks and engages with the locking boss 2221.

[0042] like Figure 4 and Figure 5 As shown, both sides of the retaining portion 223 are provided with an upwardly inclined retaining surface S223. The retaining surface S223 contacts and cooperates with the limiting boss 211 located inside the elastic arm to hold the locking device 220 on the plug body 210. In addition, the retaining portion 223 and the limiting boss 211 are configured such that when the locking device 220 is pulled from the installation position inside the plug body 210 to the outside of the plug body 210, the elastic arm 226 will not deform and open or disengage from the limiting boss 211. Specifically, the retaining portion 223 is located on the insertion shaft side of the elastic arm 226, and the retaining portion 223 and the limiting boss 211 are fixed by the retaining surface S223. The included angle α223 of the cooperation surface S223 relative to the vertical axis is greater than or equal to 90 degrees. In this embodiment, it is 120 degrees. By setting the included angle α223 to be greater than or equal to 90 degrees, the cooperation between the retaining portion 223 and the limiting boss 211 is more secure and reliable and less likely to disengage.

[0043] Specifically, such as Figure 1 and Figure 3 As shown, the plug body 210 includes an insulating shell and a receiving cavity 213 disposed within the insulating shell, and a locking device 220 is disposed within the receiving cavity 213. The button portion 221 is located on one side of the locking device 220, and the plug body 210 is provided with a through hole 216 for the button portion 221 to extend out.

[0044] In addition, such as Figure 3 and Figure 4 As shown, the plug body also includes a gland 240, which is detachably connected to the lower end of the insulating shell. This connection can be achieved by providing threaded connections on the gland 240 and the insulating shell respectively.

[0045] Optionally, the plug body 210 includes an insulating shell, and the locking device 220 is integrally disposed on the insulating shell. When the button part 221 is pressed, the entire insulating shell moves together to trigger the locking part 222 to deform and unlock.

[0046] Optionally, the locking device 220 is installed inside the plug body 210, and an elastic element is provided between the locking device 220 and the insulating shell to accelerate the return of the locking device 220 to the initial position. The elastic element is located at the bottom of both sides of the locking device 220 or between the bottom of the locking device 220 and the top of the insulating shell, and the elastic element can be a spring.

[0047] Specifically, such as Figure 1-3 and Figure 6-8 As shown, the socket body 110 is provided with a pin 120, and the plug body 210 is provided with a metal terminal 230. The metal terminal 230 includes a terminal body 231 and a docking part 232 and a wiring part 233 disposed at both ends of the terminal body 231. The docking part 232 and the wiring part 233 are arranged perpendicularly. The docking part 232 is provided with a mounting cavity 2321. The watch strap contact finger 234 is installed in the mounting cavity 2321. A limiting structure 235 is provided at the rear end of the mounting cavity 2321 to limit the rearward movement of the watch strap contact finger 234. There is a certain gap between the watch strap contact finger 234 and the limiting structure 235 so as to realize the floating insertion of the watch strap contact finger 234 and the pin 120.

[0048] like Figure 7 and Figure 8 As shown, by setting a limiting structure 235 at the rear end of the mounting cavity 2321, the movement of the watch strap contact 234 to the rear end of the mounting cavity 2321 can be limited by a large distance. At the same time, by setting a certain gap d between the watch strap contact 234 and the limiting structure 235, it is also possible to facilitate the floating connection between the watch strap contact 234 and the pin 120, thereby reducing the difficulty of connecting the plug and the socket.

[0049] like Figure 8As shown, a limiting protrusion 2322 is integrally provided at the front end of the mounting cavity 2321 to restrict the forward movement of the watch strap finger 234. The watch strap finger 234 is located between the limiting protrusion 2322 and the limiting structure 235. The limiting structure 235 includes an extension portion 2351 that extends into the mounting cavity 2321. The inner diameter of the limiting protrusion 2322 is equal to the inner diameter of the extension portion 2351.

[0050] like Figure 8 As shown, the middle part of the watch band contact finger 234 is radially recessed, and the maximum inner diameter of the watch band contact finger 234 is greater than or equal to the inner diameter of the limiting protrusion 2322, while the minimum inner diameter of the watch band contact finger 234 is less than the inner diameter of the limiting protrusion 2322. This arrangement facilitates the insertion of the pin on the socket side into the mounting cavity along the limiting protrusion 2322, and also facilitates the pin to make close contact with the watch band contact finger for conduction.

[0051] like Figure 6 and Figure 7 As shown, a bending structure 2311 is provided on the terminal body 231. The bending structure 2311 is located between the mating part 232 and the wiring part 233, and the bending structure 2311 causes the wiring part 233 to be positioned away from the mounting cavity 2321. The bending structure 2311 can indirectly increase the relative distance between the mating part 232 and the wiring part 233, thereby creating space for the wiring part 233 to connect the cable and reducing the height of the mating part 232, thus saving materials.

[0052] Specifically, such as Figure 1 , Figure 3 and Figure 6 As shown, the plug body 210 includes a first housing portion 210a for mounting a mating portion 232 and a second housing portion 210b for mounting a wiring portion 233. The wiring portion 233 is disposed in the second housing portion 210b and offset from the center of the second housing portion 210b. By offsetting the wiring portion 233 from the center of the second housing portion 210b, space is provided for the cable to extend into the second housing portion, so that the cable core can remain centered and connected to the wiring portion 233 after extending into the second housing portion.

[0053] Specifically, such as Figure 8 As shown, the limiting structure 235 is detachably installed at the rear end of the mounting cavity 2321. The limiting structure 235 includes an extension portion 2351 that extends into the mounting cavity 2321. The inner diameter of the limiting protrusion 2322 is equal to the inner diameter of the extension portion 2351, and the watch strap finger 234 is located between the limiting protrusion 2322 and the extension portion 2351. Thus, the limiting protrusion 2322 and the extension portion 2351 have a guiding movement effect on the mating pin, and the limiting protrusion 2322 and the extension portion 2351 together restrict the watch strap finger 234 from exiting the mounting cavity 2321 forward and backward.

[0054] In addition, the axial length of the extension 2351 is greater than the axial length of the strap fingers 234. By setting the distance by which the limiting structure 235 extends into the mounting cavity 2321 to be greater than the axial length of the strap fingers 234, the required length or number of strap fingers 234 can be greatly reduced, which helps to reduce manufacturing costs.

[0055] Specifically, such as Figure 3 , Figure 6 and Figure 8 As shown, the cross-sections of the pin 120, the mating part 232, the watch strap finger 234, and the extension part 2351 are all circular, and the outer contours of the pin 120, the mating part 232, and the extension part 2351 are all cylindrical surfaces, wherein the cylindrical surfaces are arranged parallel to the insertion axis of the mating part 232 and the pin 120.

[0056] Optionally, the axial length of the watch strap contact 234 can also be set to be greater than half the axial length of the mounting cavity 2321 to ensure the reliability of the connection between the plug and the socket. Specifically, the watch strap contact 234 can be composed of one or more spliced ​​together. For example, multiple watch strap contacts 234 can be arranged side by side along the axial direction of the mounting cavity 2321 between the limiting protrusion 2322 and the limiting structure 235.

[0057] Specifically, a gap d is formed between the extension portion 2351 and the watch band contact finger 234, and the width of the gap d between the watch band contact finger 234 and the limiting structure 235 is w, with w ranging from 0.1mm to 5mm, preferably from 0.1mm to 1mm. By setting the gap range to 0.1mm-5mm, an effective floating plugging action can be provided, and the shaking of the watch band contact finger 234 can be reduced, ensuring the stability of the plug-socket connection.

[0058] Specifically, the watch strap finger 234 can be pre-installed from the rear end of the mounting cavity 2321 before the limiting structure 235 is installed, or the limiting structure 235 can be installed from the rear end of the mounting cavity 2321 before the watch strap finger 234 is installed from the front end. Utilizing the elasticity of the watch strap finger 234 itself, the watch strap finger 234 is first squeezed and contracted, and after being installed into the mounting cavity 2321, the watch strap finger 234 springs back and opens.

[0059] like Figure 8 As shown, the limiting structure 235 is an end cap that can be detachably installed at the rear end of the mounting cavity 2321.

[0060] like Figure 3 and Figure 6 As shown, the wiring part 233 has a flat plate structure, and the cable is connected to the wiring part 233 by ultrasonic welding.

[0061] like Figure 6 and Figure 7As shown, the mounting cavity 2321 is integrally formed by stretching the mating part 232 toward the side away from the terminal body 231, and the stretching direction is opposite to the bending direction of the bending structure 2311.

[0062] like Figure 6 As shown, the mating part 232 is arranged perpendicularly to the terminal body 231, and the wiring part 233 is arranged parallel to the terminal body 231. The mating part 232 and the wiring part 233 are integrally formed with the terminal body 231.

[0063] Optionally, the locking device 220 can also be horizontally mounted on the plug body 210, that is, the locking device 220 is horizontally mounted in the receiving cavity 213, the button part 221 is located on one side of the locking device 220, and two locking parts 222 and retaining parts 223 are symmetrically arranged along the upper and lower sides of the locking device 220 respectively. The unlocking operation is achieved by horizontally pressing the button part 221 to trigger the deformation of the locking part 222. Example 2

[0064] like Figure 9-12 As shown, the connector in this embodiment differs from that in Embodiment 1 in the plug body structure. Specifically, the surface of the plug body 210 is provided with a countersunk hole 214 for the button portion 221. When the locking portion 222 is in the unlocked state, the button portion 221 is partially located within the countersunk hole 214. By providing the countersunk hole 214 on the insulating shell, the movement stroke of the button portion 221 can be controlled. Furthermore, the countersunk hole 214 provides some downward movement space. Therefore, the button portion 221 does not need to protrude too much from the insulating shell, saving overall material for the locking device 220.

[0065] like Figure 10 As shown, the button part 221 is square when viewed from above, and the countersunk hole 214 is also square in shape. The square shape of the countersunk hole 214 is slightly larger than that of the button part 221, which facilitates the movement of the button part 221 relative to the countersunk hole 214.

[0066] Specifically, such as Figure 9 and Figure 11 As shown, the plug body 210 is recessed near the bending structure 2311 to form an arc-shaped transition portion 215, on which multiple hollow holes 2151 are evenly distributed. By setting the arc-shaped transition portion 215 corresponding to the bending structure 2311, the wall thickness of the plug body 210 at the bending structure 2311 can be reduced, thereby keeping the overall wall thickness of the plug body 210 uniform and consistent, which is beneficial to ensuring the injection molding quality of the plug body 210; while setting the hollow holes 2151 on the arc-shaped transition portion 215 is beneficial to heat dissipation and weight reduction of the plug.

[0067] Specifically, such as Figure 11 and Figure 12As shown, the plug body 210 includes a first housing portion 210a for mounting a mating portion 232 and a second housing portion 210b for mounting a wiring portion 233. The wiring portion 233 is disposed in the second housing portion 210b and offset from the axis of the second housing portion 210b. By offsetting the wiring portion 233 from the axis of the second housing portion 210b, space is provided for the cable 300 to extend into the second housing portion 210b, so that the wire core of the cable 300 can remain centered and connected to the wiring portion 233 after extending into the second housing portion 210b.

[0068] Optionally, the surface of the plug body 210 is provided with a countersunk hole 214 for the button portion 221. When the locking part 222 is in the locked state, the button portion 221 is located inside the countersunk hole 214. By having the button portion 221 located inside the countersunk hole 214 when the locking part 222 is in the locked state, accidental contact with the button portion 221 protruding from the insulating shell can be avoided to unlock the plug, making the connection between the plug and the socket safe and reliable. Example 3

[0069] like Figure 13-17 As shown, the connector in this embodiment differs from the one in the previous embodiment in the specific structure of the plug, socket, and locking device.

[0070] like Figure 13 and Figure 14 As shown, the plug 200 and the socket 100 are coaxially connected, and the outer contours of both the plug 200 and the socket 100 are cylindrical. The conductors inside the plug body 210 and the socket body 110 are multi-core conductors to enable simultaneous current and signal transmission. The locking device 220 is arranged radially along the plug body 210 and cooperates with the limiting part 111 arranged radially along the socket body 110 to lock it.

[0071] Specifically, such as Figure 14 and Figure 15 As shown, the locking device 220 has an overall annular structure with an opening on one side. Two retaining parts 223 are symmetrically arranged on the two elastic arms 226 relative to the button part 221. The retaining parts 223 are located near the middle of the elastic arms 226, and the locking parts 222 are located near the end of the elastic arms 226. The locking parts 222 and retaining parts 223 on the same elastic arm 226 are located on different sides of the same elastic arm 226. The locking parts 222 are located on the inner side of the elastic arm, and the retaining parts 223 are located on the outer side of the elastic arm. The plug body 210 is provided with a limiting boss 211 that cooperates with the retaining parts 223. The deformable connecting parts 2222 near the locking bosses 2221 on both sides are provided with a guide slope 2223. The bottom shell of the plug body 210 is provided with a guide surface 2111 for the guide slopes 2223 to slide relative to each other.

[0072] like Figure 14 and Figure 15As shown, both sides of the retaining portion 223 are provided with retaining surfaces S223. The retaining surfaces S223 contact and cooperate with the limiting boss 211 located inside the elastic arm to hold the locking device 220 on the plug body 210. In addition, the retaining portion 223 and the limiting boss 211 are configured such that when the locking device 220 is pulled from the installation position inside the plug body 210 to the outside of the plug body 210, the elastic arm 226 will not deform and open or disengage from the limiting boss 211. Specifically, the retaining portion 223 is located on the opposite side of the insertion shaft of the elastic arm 226, and the retaining portion 223 and the limiting boss 211 are fixed by the retaining surface S223. The included angle α223 of the mating surface S223 relative to the vertical axis is less than or equal to 90 degrees. In this embodiment, it is 90 degrees. By setting the included angle α223 to be less than or equal to 90 degrees, the fit between the retaining portion 223 and the limiting boss 211 is more secure and reliable and less likely to disengage.

[0073] like Figure 14 and Figure 17 As shown, a relief groove 212 is provided between the limiting boss 211 of the plug body 210 and the bottom housing. When the button part 221 is pressed, the locking part 222 is squeezed and deformed, the guide slope 2223 slides along the guide surface 2111, and the locking part 222 extends into the relief groove 212, thereby driving the locking part 222 to disengage from the limiting part 111 and complete the unlocking process.

[0074] The above description is merely a preferred embodiment of the present invention and does not limit the scope of patent protection of the present invention. All equivalent structural transformations made under the inventive concept of the present invention using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of patent protection of the present invention.

Claims

1. A connector comprising a socket (100) and a plug (200), wherein the socket (100) is provided with a limiting portion (111), and the plug (200) comprises a plug body (210) and a locking device (220) disposed within the plug body (210), wherein the locking device (220) cooperates with the limiting portion (111) to lock the plug (200) to the socket (100), characterized in that, The locking device (220) includes a button portion (221) located on one side and two elastic arms (226) extending from the button portion (221) to the other side and spaced apart. The two elastic arms (226) are provided with a locking portion (222) and a retaining portion (223). The locking portion (222) cooperates with the limiting portion (111) to keep the plug (200) and the socket (100) in a locked state. The retaining portion (223) is used to hold the locking portion (222) on the plug (200). When the button portion (221) is pressed, the elastic arm (226) abuts against the plug body (210). The button portion (221) moves to trigger the elastic arm (226) to generate elastic deformation. The locking portion (222) disengages from the limiting portion (111), thereby changing the plug (200) and the socket (100) from a locked state to an unlocked state.

2. The connector according to claim 1, characterized in that, The two elastic arms (226) are symmetrically arranged relative to the button part (221). Two locking parts (222) are symmetrically arranged on the two elastic arms (226) relative to the button part (221). The two locking parts (222) are arranged opposite each other and their opposing surfaces are provided with arc-shaped contours to cooperate with the cylindrical outer contour of the socket (100) for locking.

3. A connector according to claim 2, characterized in that, Two retaining portions (223) are symmetrically arranged on the two elastic arms (226) relative to the button portion (221). The retaining portions (223) are located near the ends of the elastic arms (226), and the locking portions (222) are located near the middle of the elastic arms (226). The locking portions (222) and retaining portions (223) on the same elastic arm (226) are located on the same side of the same elastic arm (226). Alternatively, two retaining portions (223) are symmetrically arranged on the two elastic arms (226) relative to the button portion (221). The retaining portions (223) are located near the middle of the elastic arms (226), and the locking portions (222) are located near the ends of the elastic arms (226). The locking portions (222) and retaining portions (223) on the same elastic arm (226) are located on different sides of the same elastic arm (226).

4. A connector according to claim 1, characterized in that, The plug body (210) is provided with a limiting boss (211). When the locking device (220) is installed on the plug body (210), the retaining part (223) cooperates with the limiting boss (211) to retain the locking device (220) on the plug body (210).

5. A connector according to claim 4, characterized in that, The limiting boss (211) has a guide surface (2111). When the button part (221) is pressed, the locking device (220) moves along the guide surface (2111) to trigger the elastic arm (226) to deform.

6. A connector according to claim 5, characterized in that, The guide surface (2111) is an inclined surface, and the elastic arm (226) is provided with a guide inclined surface (2223) that is adapted to the shape of the guide surface (2111). Both inclined surfaces are set at the same angle to the horizontal direction.

7. A connector according to claim 1, characterized in that, The locking part (222) includes a locking boss (2221) and a deformable connecting part (2222). When the button part (221) is pressed, the button part (221) squeezes the elastic arm (226) to deform. The elastic arm (226) transmits the deformation to the deformable connecting part (2222), thereby causing the locking boss (2221) to disengage from the limiting part (111) so as to change the locking device (220) from the locked state to the unlocked state.

8. A connector according to claim 7, characterized in that, The deformable connecting part (2222) is provided with a guide slope (2223) adjacent to the locking boss (2221), and the plug body (210) is provided with a guide surface (2111) for the guide slope (2223) to slide relative to each other.

9. A connector according to claim 7, characterized in that, The plug body (210) has clearance grooves (212) on both sides. When the button part (221) is pressed by an external force, the elastic arm (226) is triggered to deform to both sides respectively. The deformable connecting part (2222) extends into the clearance groove (212) at least partially. At the same time, the deformable connecting part (2222) drives the locking boss (2221) to disengage from the limiting part (111).

10. A connector according to claim 7, characterized in that, The locking device (220) has a guide structure (224) near the locking boss (2221), and the guide structure (224) has a guide surface. When the plug (200) and the socket (100) begin to be inserted and engaged, the limiting part (111) can move along the guide surface and squeeze the deformable connecting part (2222) to generate deformation, so that the limiting part (111) extends into the locking part (222) and locks and engages with the locking boss (2221).

11. A connector according to claim 1, characterized in that, The locking device (220) is a plastic part. The button part (221), the locking part (222) and the retaining part (223) are integrally formed on the locking device (220). The retaining part (223) and the limiting boss (211) are configured such that when the locking device (220) is pulled from the installation position inside the plug body (210) to the outside of the plug body (210), the elastic arm (226) will not deform, open and disengage from the limiting boss (211).

12. A connector according to claim 11, characterized in that, The plug body (210) has a receiving cavity (213) inside, the locking device (220) is installed in the receiving cavity (213), and the plug body (210) has a through hole (216) for the button part (221) to extend out.

13. A connector according to claim 1, characterized in that, The surface of the plug body (210) is provided with a countersunk hole (214) adapted to the button part (221). When the locking part (222) is in the unlocked state, the button part (221) is located in the countersunk hole (214); or, the surface of the plug body (210) is provided with a countersunk hole (214) adapted to the button part (221). When the locking part (222) is in the locked state, the button part (221) is located in the countersunk hole (214).

14. A connector according to any one of claims 1-13, characterized in that, The socket (100) further includes a socket body (110) and pins (120) disposed within the socket body (110). The plug (200) further includes a metal terminal (230) disposed within the plug body (210). The metal terminal (230) includes a terminal body (231) and a mating portion (232) and a wiring portion (233) disposed at both ends of the terminal body (231). The mating portion (232) and the wiring portion (233) are arranged perpendicularly. The mating portion (232) is provided with a mounting cavity (2321). The watch strap finger (234) is installed in the mounting cavity (2321). A limiting structure (235) is provided at the rear end of the mounting cavity (2321). The mounting cavity (2321) is provided with a limiting protrusion (2322) at the front end. The limiting structure (235) is detachably installed at the rear end of the mounting cavity (2321). The limiting structure (235) includes an extension portion (2351) that extends into the mounting cavity (2321). The inner diameter of the limiting protrusion (2322) is equal to the inner diameter of the extension portion (2351). The watch strap finger (234) is located between the limiting protrusion (2322) and the extension portion (2351), and there is a certain gap (d) between the watch strap finger (234) and the extension portion (2351) to realize the floating insertion of the watch strap finger (234) and the pin (120).

15. A connector according to claim 14, characterized in that, A bending structure (2311) is provided on the terminal body (231). The bending structure (2311) is located between the mating part (232) and the wiring part (233), and the bending structure (2311) causes the wiring part (233) to be disposed on the side away from the mounting cavity (2321).

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