Wire terminal structure, power supply device, socket and switch

Abstract

The utility model discloses a wiring terminal structure, power supply unit, socket and switch, including connecting piece, bolt on the connecting piece of threaded connection, the electrically conductive sheet of top tight of cooperation bolt of being worn on the connecting piece, the position of being close to the connecting piece is provided with the stop piece, the side of bolt is provided with the convex edge, and the convex edge at least one part is in bolt axial direction and cooperates with the stop piece, when the bolt is screwed in position, the convex edge and the stop piece abut, and the bolt continues to be screwed. Can alleviate the problem that bolt is screwed excessively and leads to the deformation of electrically conductive sheet, improves the stability of wire connection.

Description

Technical Field

[0001] This utility model relates to a power supply device, specifically a terminal block structure, a power supply device, a socket, and a switch. Background Technology

[0002] Terminal blocks are essential components of power supply devices such as sockets and switches. Their purpose is to facilitate the connection of wires, enabling the introduction or extraction of power.

[0003] Currently, the common method for terminal blocks is to tighten the wires to the conductive copper plates using bolts. However, the bolts may be over-tightened, causing the copper plates to deform or even warp up at one end, resulting in poor contact. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a terminal block structure, power supply device, socket and switch, which can alleviate the problem of deformation of conductive sheet caused by excessive tightening of bolts and improve the stability of wire connection.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A terminal block structure includes a connector, a bolt threaded onto the connector, and a conductive sheet passing through the connector and tightened against the bolt. A limiting member is provided near the connector. The bolt has a raised edge on its side, and at least a portion of the raised edge engages with the limiting member in the axial direction of the bolt. When the bolt is tightened to the correct position, the raised edge abuts against the limiting member, preventing the bolt from being tightened further.

[0006] As a further improvement of this utility model, the number of limiting members is at least two, and they are located on both sides of the connector respectively, forming a space between the two limiting members for installing the connector.

[0007] As a further improvement of this utility model, the limiting member is fitted with the connecting member.

[0008] As a further improvement of this utility model, the protruding edge is annular.

[0009] As a further improvement of this utility model, two support parts are also provided between the two limiting members. The two support parts are located on both sides of the connector, and the conductive sheet is supported by the two support parts.

[0010] As a further improvement of this utility model, the conductive sheet is bent to form a groove corresponding to one of the support parts, and the groove is used to insert and support the corresponding support.

[0011] As a further improvement of this utility model, a height difference is formed between the end faces of the two support portions used to support the conductive sheet, and the end face of the corresponding groove is higher than the other end face.

[0012] This utility model also provides a power supply device, including the terminal block structure as described in any one of the above.

[0013] This utility model also provides a socket, including the wiring terminal structure as described in any of the above.

[0014] This utility model also provides a switch, including the terminal block structure as described in any of the above.

[0015] The beneficial effects of this utility model are that by setting a limiting member near the connector and setting a raised edge on the side of the bolt, when the bolt is tightened to the position, the raised edge abuts against the limiting member, limiting the bolt from being tightened further, thereby alleviating the problem of deformation of the conductive sheet caused by excessive bolt tightening, improving the contact stability between the conductive sheet and the wire, and improving the connection reliability of the terminal structure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the internal structure of the present invention;

[0017] Figure 2 This is a three-dimensional schematic diagram of the internal structure of this utility model;

[0018] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 4 for Figure 1 Enlarged view of part A in the image;

[0020] Figure 5 for Figure 2 Enlarged view of part B in the image;

[0021] Figure 6 for Figure 3 Enlarged view of section C in the image.

[0022] Reference numerals: 1. Connector; 2. Bolt; 21. Protrusion; 3. Conductive sheet; 31. Groove; 4. Limiting element; 5. Support. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.

[0024] Reference Figure 1-6As shown, a terminal block structure in this embodiment includes a connector 1, a bolt 2 threaded onto the connector 1, and a conductive sheet 3 passing through the connector 1 and engaging with the bolt 2. A limiting member 4 is provided near the connector 1. A protruding edge 21 is provided on the side of the bolt 2, and at least a portion of the protruding edge 21 engages with the limiting member 4 in the axial direction of the bolt 2. When the bolt 2 is tightened to the correct position, the protruding edge 21 abuts against the limiting member 4, preventing the bolt 2 from being tightened further.

[0025] Connector 1 is used to assemble bolt 2 and conductive plate 3. Bolt 2 is threaded onto connector 1, and conductive plate 3 is threaded through connector 1. When connecting a wire, the wire is placed on conductive plate 3, and bolt 2 is tightened so that the end of bolt 2 presses against conductive plate 3. Under pressure, conductive plate 3 presses against the wire, achieving an electrical connection between the wire and conductive plate 3. During the tightening of bolt 2, bolt 2 drives the protruding edge 21 to move closer to connector 1. A limiting element 4 is provided near connector 1, and at least a portion of the protruding edge 21 is axially opposite to the limiting element 4. When bolt 2 is tightened to a predetermined position, the protruding edge 21 abuts against the limiting element 4, and the limiting element 4 forms an axial block on the protruding edge 21, restricting bolt 2 from continuing to rotate in the tightening direction, thereby limiting further tightening of bolt 2. This can alleviate the problem of excessive compression and deformation of conductive plate 3 caused by over-tightening of bolt 2, improve the contact stability between conductive plate 3 and subsequent components, and improve the connection reliability of the terminal structure. The flange 21 can be integrally formed with the bolt 2, or it can be a retaining ring or washer that is fixedly fitted onto the bolt 2.

[0026] To facilitate the installation and positioning of the connector 1, in one optional scheme, the number of positioning members 4 is at least two, and they are located on both sides of the connector 1 respectively, forming a space between the two positioning members 4 for installing the connector 1.

[0027] Two limiting members 4 are respectively disposed on both sides of the connector 1. The space formed between the two limiting members 4 is adapted to the shape of the connector 1, and the connector 1 is installed in this space. The two limiting members 4 limit the connector 1 from both sides, keeping the position of the connector 1 relatively stable between the limiting members 4. The two limiting members 4 can be integrally connected to the outer shell or base. A small gap can be left between the limiting members 4 and the connector 1 to facilitate assembly, or they can be fitted together to achieve a tighter limiting.

[0028] Further optimization can be achieved by having the limiting component 4 and the connecting component 1 fit together.

[0029] The side of the limiting member 4 near the connector 1 is in close contact with the outer surface of the connector 1, forming a surface contact fit between the limiting member 4 and the connector 1. This provides auxiliary fixation to the position of the connector 1, improving the installation stability of the connector 1 between the limiting members 4.

[0030] In some options, the convex edge 21 is annular.

[0031] The flange 21 is configured as an annular structure surrounding the side of the bolt 2, so that the flange 21 forms a continuous limiting mating surface in the circumferential direction of the bolt 2. Regardless of the circumferential position of the bolt 2 during tightening, the annular flange 21 can form an effective abutment fit with the limiting member 4, thereby improving the reliability of the limiting fit.

[0032] To further improve the support stability of the conductive sheet 3, in one optional scheme, two support parts 5 are also provided between the two limiting members 4. The two support parts 5 are located on both sides of the connector 1, and the conductive sheet 3 is supported by the two support parts 5.

[0033] When the conductive sheet 3 is subjected to downward pressure, the support part 5 provides upward support to the conductive sheet 3 from below, balancing the external pressure and keeping the conductive sheet 3 stable under stress. The support part 5 can be integrally formed with the outer shell or the limiting member 4.

[0034] Specifically, further optimization can be achieved by bending the conductive sheet 3 to form a groove 31 corresponding to one of the support parts 5, and the groove 31 is used to connect and support the corresponding support.

[0035] The conductive sheet 3 forms a groove 31 at one of the support portions 5 through a bending process. The opening of the groove 31 faces the support portion 5, and the support portion 5 is inserted into the groove 31 to form a plug-in fit. Through the plug-in fit between the groove 31 and the support portion 5, the conductive sheet 3 is constrained in both the horizontal and vertical directions, restricting the conductive sheet 3 from sliding horizontally or tilting vertically relative to the support portion 5.

[0036] In some options, the two support portions 5 form a height difference between the end faces of the conductive sheet 3, and the end face of the corresponding groove 31 is higher than the other end face.

[0037] Two support portions 5 are used to support the end faces of the conductive sheet 3 at different heights, forming a height difference, with the end face corresponding to the groove 31 being higher than the other end face. Since the groove 31 is formed by bending at the position of the conductive sheet 3, this part has a relatively large thickness or height. The higher end face mates with the groove 31, and the lower end face mates with other parts of the conductive sheet 3, making the conductive sheet 3 generally horizontal or maintaining the tilt angle required for contact with the wire after being supported. This alleviates the problem of unbalanced support caused by local bending of the conductive sheet 3, improves the flatness of the conductive sheet 3 after being supported, and enhances the uniformity of contact between the conductive sheet 3 and the wire.

[0038] Based on the same inventive concept, this embodiment also provides a power supply device, including the terminal structure of any of the above-described improvements.

[0039] The power supply device has a housing, and a terminal block structure is installed inside the housing. The conductive piece 3 of the terminal block structure is electrically connected to the internal circuitry of the power supply device. External wires are introduced into or led out of the power supply device through the terminal block structure. During wire connection, the terminal block structure can limit the further tightening of the bolt 2, alleviate deformation of the conductive piece 3, and improve the stability of the wire connection inside the power supply device. The power supply device can be used for distribution boxes, junction boxes, or other devices that require wire transfer or branching. One or more terminal blocks can be installed and fixed inside the power supply device by snap-fit ​​or fasteners.

[0040] In order to apply the terminal block structure to the power interface, in one alternative, a socket is provided that includes the terminal block structure of any of the above-mentioned improvements.

[0041] Accordingly, this embodiment also provides a switch, including the terminal structure of any of the above-described improvements.

[0042] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A terminal structure comprising a connecting member, a bolt screwed to the connecting member, and a conductor plate fitted to the connecting member to be tightened by the bolt, characterized in that, A limiting element is provided near the connector. The bolt has a raised edge on its side, and at least a portion of the raised edge engages with the limiting element in the axial direction of the bolt. When the bolt is tightened to the position, the raised edge abuts against the limiting element, preventing the bolt from being tightened further.

2. The terminal structure according to claim 1, wherein The number of limiting members is at least two, and they are located on both sides of the connector, forming a space between the two limiting members for installing the connector.

3. The terminal structure according to claim 1 or 2, characterized in that, The limiting component fits into the connecting component.

4. The terminal block structure according to claim 1 or 2, characterized in that, The protrusion is ring-shaped.

5. The terminal block structure according to claim 2, characterized in that, Two support parts are also provided between the two limiting members. The two support parts are located on both sides of the connector, and the conductive sheet is supported by the two support parts.

6. The terminal structure according to claim 5, wherein The conductive sheet is bent to form a groove at one of the support portions, and the groove is used to insert and support the corresponding support.

7. The terminal structure according to claim 6, wherein The two support portions form a height difference between the end faces of the conductive sheet, and the end face of the corresponding groove is higher than the other end face.

8. A power supply device, characterized by comprising: Includes the terminal block structure as described in any one of claims 1 to 7.

9. A socket, characterized by Includes the terminal block structure as described in any one of claims 1 to 7.

10. A switch, characterized by Includes the terminal block structure as described in any one of claims 1 to 7.

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