A mistaken insertion prevention connecting device for power supply SR terminal

The special design of the socket and plug components solves the problem of easy mis-insertion of power connection terminals, achieving a safe and reliable connection and enhancing system stability and anti-mis-insertion function.

CN224305056UActive Publication Date: 2026-05-29JIANGSU HURUN PHOTOELECTRIC TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU HURUN PHOTOELECTRIC TECH CO LTD
Filing Date
2025-05-21
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing power connection terminals are prone to short circuits, equipment burnout, and fire risks due to misinsertion. Furthermore, the anti-misinsertion structure is susceptible to dust, moisture corrosion, or mechanical impact, leading to a decrease in system stability.

Method used

A mating structure for a socket assembly and a plug assembly is designed. Through the special mating of the claw and the slot, insertion is only possible when the direction and position are correct. The elastic force provided by the spring ensures a tight fit between the claw and the slot. The connection stability is enhanced by the combination of the plug rod, the stop block, and the set screw.

Benefits of technology

It effectively prevents mis-insertion, improves safety and reliability, ensures a stable connection between the plug and socket, avoids loosening or detachment, and extends the service life of the device.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a kind of power SR terminal's anti-misplug connecting device, belong to power SR terminal technical field, including socket assembly, including socket shell, terminal mounting plate being fixedly connected in the middle of the socket shell, fixed plate being installed in the end of the socket shell, and support piece being fixedly connected in the bottom of the socket shell;Plug assembly, including the connecting plate being inserted in the side wall of the fixed plate, plug shell being fixedly connected in the side wall of the connecting plate, and pawl being slidably connected in the inside of the plug shell.The utility model has the beneficial effects that: through the cooperation of socket assembly and plug assembly, only when inserting in correct direction and position, pawl can be smoothly inserted into card slot, thereby effectively prevent the misplug condition from happening, improve the security and reliability of use, ensure that pawl and card slot are closely matched, increase locking structure, avoid the problem that plug and socket are loose or fall off in use process.
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Description

Technical Field

[0001] This utility model belongs to the field of power supply SR terminal technology, and specifically relates to a power supply SR terminal anti-misinsertion connection device. Background Technology

[0002] As a core interface component of electrical systems, the reliability of power connection terminals directly affects the operational safety of equipment and the user experience. In the fields of consumer electronics, industrial equipment, and new energy, SR terminals (also known as power connection terminals) are widely used due to their high conductivity and easy insertion / removal characteristics.

[0003] Existing connection terminals have the following problems: Incorrect insertion of SR terminals of different specifications or polarities may cause short circuits, equipment burnout, or even fire risks. In scenarios requiring frequent insertion and removal, traditional snap-fit ​​connections are prone to incorrect insertion due to operator fatigue or visual errors, and long-term wear of the snaps can lead to poor contact, increasing the risk of hidden faults. Existing anti-misinsertion structures (such as simple boss limiting) are susceptible to dust, moisture corrosion, or mechanical impact, causing the anti-misinsertion function to fail and affecting system stability. Utility Model Content

[0004] The purpose of this invention is to provide a connection device for preventing mis-insertion of the power supply SR terminal, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A device for preventing mis-insertion of a power supply SR terminal, comprising:

[0007] A socket assembly includes a socket housing, a terminal mounting plate fixedly connected to the middle of the socket housing, a fixing plate mounted on the end of the socket housing, and a support member fixedly connected to the bottom of the socket housing;

[0008] The plug assembly includes a connecting plate that is inserted into the side wall of the fixing plate, a plug housing that is fixedly connected to the side wall of the connecting plate, and a claw that is slidably engaged inside the plug housing. The end of the claw is engaged in the middle of the slot in the side wall of the fixing plate, and the end of the claw is located inside the support.

[0009] As a preferred embodiment of the present invention, the plug assembly further includes a spring fixedly connected to the middle position inside the plug housing, and the end of the spring is fixedly connected to the side wall of the claw.

[0010] As a preferred embodiment of the present invention, the plug assembly further includes a stop block inserted into the middle position of the end of the plug housing, and the end of the stop block is engaged with the side wall of the end of the claw.

[0011] As a preferred embodiment of the present invention, the plug assembly further includes a plug rod threadedly connected to the end of the claw, the end of the plug rod having an arc-shaped structure, and the end of the plug rod being inserted into the middle of the slot on the side wall of the stop block.

[0012] As a preferred embodiment of the present invention, the plug assembly further includes a set screw threaded to the middle position of the claw end, and the end of the set screw is inserted into the side wall of the plug rod.

[0013] As a preferred embodiment of the present invention, the plug assembly further includes a limiting plate fixedly connected to the end of the plug housing, the limiting plate being snapped onto the outside of the claw.

[0014] As a preferred embodiment of the present invention, the plug assembly further includes a baffle fixedly connected to the side wall of the plug housing. The baffle has a clearance hole in the center for use with the set screw. The end of the baffle extends above the limiting plate, and the upper part of the limiting plate and the lower side wall of the baffle have clearance grooves for use with the insertion rod.

[0015] Compared with the prior art, the beneficial effects of this utility model are: by using the socket assembly and plug assembly together, the claw can smoothly engage with the slot only when inserted in the correct direction and position, thereby effectively preventing mis-insertion, improving the safety and reliability of use, ensuring that the claw and slot are tightly engaged, adding a locking structure, and avoiding the problem of the plug and socket becoming loose or falling off during use. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a front structural diagram of the present invention;

[0019] Figure 3 This is a side view of the present invention.

[0020] Figure 4 This is a schematic cross-sectional view of section AA of the present invention;

[0021] Figure 5 This is a top view of the structure of this utility model.

[0022] In the diagram: 100, socket assembly; 101, socket housing; 102, terminal mounting plate; 103, fixing plate; 104, support component; 200, plug assembly; 201, connecting plate; 202, plug housing; 203, claw; 204, spring; 205, stop; 206, plug rod; 207, set screw; 208, limit plate; 209, baffle. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0026] Example

[0027] Reference Figures 1-5 This embodiment of the present invention provides a mis-insertion prevention connection device for a power supply SR terminal, comprising:

[0028] The socket assembly 100 includes a socket housing 101, a terminal mounting plate 102 fixedly connected to the middle of the socket housing 101, a fixing plate 103 installed at the end of the socket housing 101, and a support member 104 fixedly connected to the bottom of the socket housing 101.

[0029] The plug assembly 200 includes a connecting plate 201 that is inserted into the side wall of the fixing plate 103, a plug housing 202 that is fixedly connected to the side wall of the connecting plate 201, and a claw 203 that is slidably engaged inside the plug housing 202. The end of the claw 203 is engaged in the middle of the slot on the side wall of the fixing plate 103, and the end of the claw 203 is located inside the support member 104.

[0030] The socket housing 101 protects and houses the internal components. The terminal mounting plate 102 is fixed in the middle of the socket housing 101 for mounting the power SR terminal. The fixing plate 103 is installed at the end of the socket housing 101, its main function being to mate and fix with the plug assembly 200. The support member 104 is fixedly connected to the bottom of the socket housing 101, providing support for the entire socket assembly 100 and enhancing the stability of the device. The connecting plate 201 serves as a transition and connection. The plug housing 202 is the main outer shell of the plug assembly 200, providing installation space for other components. The latch 203 is a key component for connecting the plug and socket and preventing mis-insertion; through its cooperation with the latch of the fixing plate 103, it can firmly fix the plug to the socket.

[0031] Specifically, the plug assembly 200 also includes a spring 204 fixedly connected to the middle position inside the plug housing 202, with the end of the spring 204 fixedly connected to the side wall of the claw 203.

[0032] The spring 204 provides elastic force to the jaw 203, enabling the jaw 203 to automatically adjust its position during insertion and removal, ensuring a tight fit between the jaw 203 and the slot of the fixing plate 103.

[0033] Furthermore, the plug assembly 200 also includes a stop 205 that is inserted into the middle position of the end of the plug housing 202, and the end of the stop 205 is engaged with the end side wall of the claw 203.

[0034] The stop block 205 serves to limit the movement range of the claw 203, preventing the claw 203 from moving excessively and causing unstable connection. It also prevents the claw 203 from accidentally moving due to accidental contact, which could affect the stability of the plug and socket connection.

[0035] Furthermore, the plug assembly 200 also includes a plug rod 206 threaded to the end of the claw 203. The end of the plug rod 206 has an arc-shaped structure and is inserted into the middle of the slot on the side wall of the stop block 205.

[0036] The arc-shaped structure of the insertion rod 206 facilitates insertion into the slot of the stop block 205, and, in conjunction with the stop block 205, further enhances the positioning and stability of the claw 203.

[0037] Preferably, the plug assembly 200 further includes a set screw 207 threadedly connected to the middle position of the end of the claw 203, the end of the set screw 207 being inserted into the side wall of the plug 206.

[0038] The set screw 207 is used to fix the plug rod 206, prevent the plug rod 206 from loosening during use, and ensure the reliability of the entire connection structure.

[0039] It should be noted that the plug assembly 200 also includes a limiting plate 208 fixedly connected to the end of the plug housing 202, and the limiting plate 208 is snapped onto the outside of the claw 203.

[0040] The limiting plate 208 serves to limit and protect the claw 203, preventing the claw 203 from moving beyond its effective range.

[0041] Preferably, the plug assembly 200 further includes a baffle 209 fixedly connected to the side wall of the plug housing 202. The baffle 209 has a clearance hole at its center that cooperates with the set screw 207. The end of the baffle 209 extends above the limiting plate 208, and the upper part of the limiting plate 208 and the lower side wall of the baffle 209 have clearance grooves that cooperate with the plug rod 206.

[0042] Among them, the baffle 209 not only provides operating space for the set screw 207 and the insertion rod 206, but also provides further protection for the chuck 203, preventing external objects from damaging the chuck.

[0043] In use, when the plug assembly needs to be inserted into the socket assembly, first align the connecting plate 201 with the side wall of the fixing plate 103, and then move the plug assembly 200 towards the socket assembly 100. During the movement, the claw 203 is pressed by the fixing plate 103 and slides into the plug housing 202, while simultaneously compressing the spring 204. When the claw 203 moves to the slot position on the side wall of the fixing plate 103, the elastic force of the spring 204 causes the claw 203 to pop out and engage in the slot, thereby achieving the connection between the plug and the socket. Then, the stop 205 is inserted into the side wall of the plug housing 202, and the end of the plug rod 206 is inserted into the slot on the side wall of the stop 205, further enhancing the stability of the connection.

[0044] When it is necessary to remove the plug assembly, the set screw 207 must first be operated to separate the plug 206 from the stop block 205. Then, overcoming the elastic force of the spring 204, the claw 203 is pressed into the plug housing 202, causing the claw 203 to disengage from the slot of the fixing plate 103. Finally, the plug assembly 200 is pulled out of the socket assembly 100.

[0045] In summary, through the special engagement between the claw 203 and the slot of the fixing plate 103, the claw 203 can only smoothly engage in the slot when inserted in the correct direction and position, effectively preventing mis-insertion and improving safety and reliability. The spring 204 provides continuous elastic force to the claw 203, ensuring a tight fit between the claw 203 and the slot. Simultaneously, the engagement between the insertion rod 206 and the stop block 205, along with the fixing effect of the set screw 207, further enhances the stability of the connection, preventing the plug and socket from loosening or falling off during use. The limiting plate 208 and the baffle 209 effectively protect the claw 203, extending the service life of the device.

[0046] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0047] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0048] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A device for preventing mis-insertion of a power supply SR terminal, characterized in that: include, The socket assembly (100) includes a socket housing (101), a terminal mounting plate (102) fixedly connected to the middle of the socket housing (101), a fixing plate (103) installed at the end of the socket housing (101), and a support member (104) fixedly connected to the bottom of the socket housing (101). The plug assembly (200) includes a connecting plate (201) inserted into the side wall of the fixing plate (103), a plug housing (202) fixedly connected to the side wall of the connecting plate (201), and a claw (203) slidably engaged inside the plug housing (202). The end of the claw (203) is engaged in the middle of the slot on the side wall of the fixing plate (103), and the end of the claw (203) is located inside the support member (104).

2. The anti-misinsertion connection device for the power supply SR terminal according to claim 1, characterized in that: The plug assembly (200) also includes a spring (204) fixedly connected to the middle position inside the plug housing (202), and the end of the spring (204) is fixedly connected to the side wall of the claw (203).

3. The anti-misinsertion connection device for the power supply SR terminal according to claim 2, characterized in that: The plug assembly (200) further includes a stop (205) inserted into the middle position of the end of the plug housing (202), the end of the stop (205) being engaged with the end side wall of the claw (203).

4. The anti-misinsertion connection device for the power supply SR terminal according to claim 3, characterized in that: The plug assembly (200) further includes a plug rod (206) threaded to the end of the claw (203), the end of the plug rod (206) having an arc-shaped structure, and the end of the plug rod (206) being inserted into the middle of the slot on the side wall of the stop block (205).

5. The anti-misinsertion connection device for the power supply SR terminal according to claim 4, characterized in that: The plug assembly (200) further includes a set screw (207) threaded to the middle position of the end of the claw (203), the end of the set screw (207) being inserted into the side wall of the plug (206).

6. The anti-misinsertion connection device for the power supply SR terminal according to claim 5, characterized in that: The plug assembly (200) further includes a limiting plate (208) fixedly connected to the end of the plug housing (202), the limiting plate (208) being snapped onto the outside of the claw (203).

7. The anti-misinsertion connection device for the power supply SR terminal according to claim 6, characterized in that: The plug assembly (200) further includes a baffle (209) fixedly connected to the side wall of the plug housing (202). The baffle (209) has a clearance hole in the center that cooperates with the set screw (207). The end of the baffle (209) extends above the limiting plate (208), and the upper part of the limiting plate (208) and the lower side wall of the baffle (209) have clearance grooves that cooperate with the plug rod (206).