Overload relay and combined electrical component

Abstract

The utility model belongs to the technical field of low-voltage electric appliances, and discloses an overload relay and a combined electrical element. The overload relay comprises a relay and a mounting seat, and the combined electrical element comprises a relay and a contactor. The relay is provided with a hook and an insertion plate, the mounting seat is provided with a first hooking groove and a first insertion groove, the contactor is provided with a second hooking groove and a second insertion groove, the relay is connected with the mounting seat through hooking connection of the hook and the first hooking groove and insertion connection of the insertion plate and the first insertion groove, and the relay is connected with the mounting seat through hooking connection of the hook and the second hooking groove. And the plug board is plugged into the second plug slot, so that the relay is connected with the contactor. According to the utility model, the relay can be firmly and reliably connected with the mounting seat or the contactor, and the probability of problems is reduced.

Description

Overload relays and combined electrical components Technical Field

[0001] This utility model relates to the field of low-voltage electrical technology, and in particular to an overload relay and a combined electrical component. Background Technology

[0002] A relay is used to protect an electric motor and includes a heating element, a main bimetallic bending mechanism, a displacement transmission mechanism, and a tripping mechanism. When the operating current flowing through the motor is overloaded, the main bimetallic bending mechanism transmits the load to the tripping mechanism via the displacement transmission mechanism, causing the relay to trip and thus protecting the motor.

[0003] In existing technology, when a relay is connected to a mounting base or other components, the relay and mounting base are typically hooked together, and then the screws in the wiring assembly are tightened to press the conductive rod on the relay against the contact plate in the wiring assembly, thus achieving the connection between the relay and the mounting base. If the screws in this structure become loose, the relay can easily fall off. Summary of the Invention

[0004] The purpose of this invention is to provide an overload relay and a combined electrical component, which improves the connection between the relay and the mounting base / contaminant and reduces the probability of detachment.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] An overload relay includes a relay and a mounting base. Along the height direction of the overload relay, the relay is provided with spaced hooks and insert plates. The mounting base is provided with spaced first hook slots and first insertion slots. The hooks are hooked to the first hook slots, and the insert plates are inserted into the first insertion slots.

[0007] As an alternative solution for the overload relay, the mounting base includes a vertically connected vertical connecting part and a horizontal support part. The relay is supported on the horizontal support part. The vertical connecting part is provided with the first hook groove and the first insertion groove. The relay is provided with the hook and the insertion plate on the side facing the vertical connecting part.

[0008] As an alternative solution for the overload relay, along the width direction of the overload relay, the vertical connecting portion is provided with two spaced vertical baffles, and the relay is limited to being located between the two vertical baffles.

[0009] As an alternative solution for the overload relay, the overload relay further includes a wiring assembly, which includes a contact plate, and the contact plate has serrations at both ends along the width direction of the overload relay.

[0010] The vertical connecting part is provided with a mounting groove corresponding to the contact plate, the contact plate is disposed in the mounting groove, and the serrations are interference-fitted with the groove wall of the mounting groove.

[0011] As an alternative to the overload relay, the dimension of the plug plate along the height direction of the overload relay is smaller than the dimension of the first plug slot along the height direction of the overload relay, and the plug plate elastically abuts against the upper groove surface of the first plug slot.

[0012] As an alternative solution for the overload relay, the relay is provided with two spaced hooks along the width direction of the overload relay, and the mounting base is provided with two spaced first hook slots, with the two hooks respectively hooked and connected to the two first hook slots.

[0013] A combined electrical component, including a relay and a contactor, wherein along the height direction of the combined electrical component, the relay is provided with a spaced-out hook and a plug plate, and the contactor is provided with a spaced-out second hook groove and a second plug groove, the hook being hooked to the second hook groove, and the plug plate being plugged into the second plug groove.

[0014] As an alternative to the combined electrical components, the contactor has a positioning protrusion on the side facing the relay, and the positioning protrusion has the second insertion groove.

[0015] As an alternative to the combined electrical component, the plug-in includes a main board and sliding portions disposed at both ends of the main board along the width direction of the combined electrical component;

[0016] The second insertion slot includes a main slot and sliding slots disposed on both sides of the main slot along the width direction of the combined electrical component. The motherboard is disposed in the main slot, and the two sliding parts are respectively inserted into the two sliding slots.

[0017] As an alternative solution for modular electrical components, the motherboard is provided with a snap-fit ​​slot, and the main slot is provided with a snap-fit ​​boss for snapping into the snap-fit ​​slot.

[0018] The beneficial effects of this utility model are:

[0019] The overload relay provided by this utility model achieves a hook-and-mount connection between the relay and the mounting base simultaneously by hooking the relay to the first hook-and-mount slot and inserting the plug plate into the first plug slot. This ensures a firm and reliable connection between the relay and the mounting base, effectively preventing the relay from accidentally falling off. Furthermore, during installation, the relay and mounting base are first hooked together, and then the relay is rotated to allow them to plug into the mounting base, making installation convenient.

[0020] The combined electrical component provided by this utility model, through the hook and second hook slot for hanging, and the plug plate and second plug slot for plugging, realizes the connection between the relay and the contactor. At the same time, the relay can also be plugged into the mounting base, making the connection between the relay and the contactor firm and reliable, effectively preventing the relay and the contactor from detaching from each other. Moreover, when the relay and the contactor are connected, the relay and the contactor are first hung, and then the relay is rotated to plug the relay and the contactor into each other, making the installation of the relay and the contactor convenient. Attached Figure Description

[0021] Figure 1 is a schematic diagram of the overload relay provided in Embodiment 1 of this utility model;

[0022] Figure 2 is a schematic diagram of the structure of the relay involved in Embodiment 1 of this utility model;

[0023] Figure 3 is a structural schematic diagram of the mounting base involved in Embodiment 1 of this utility model;

[0024] Figure 4 is a schematic diagram of the wiring assembly involved in Embodiment 1 and Embodiment 2 of this utility model;

[0025] Figure 5 is a cross-sectional view of the overload relay provided in Embodiment 1 of this utility model (the plug plate and the first plug slot are not plugged in);

[0026] Figure 6 is a cross-sectional view of the overload relay provided in Embodiment 1 of this utility model (plug plate and first plug slot are plugged in);

[0027] Figure 7 is a structural schematic diagram of the combined electrical component provided in Embodiment 2 of this utility model;

[0028] Figure 8 is a structural schematic diagram of the relay and positioning protrusion involved in Embodiment 2 of this utility model from a first perspective.

[0029] Figure 9 is a structural schematic diagram of the relay and positioning protrusion involved in Embodiment 2 of this utility model from a second perspective.

[0030] In the picture:

[0031] 1. Relay; 11. Hook; 12. Insertion board; 121. Main board; 1211. Snap-in slot; 122. Sliding part;

[0032] 2. Mounting base; 21. Vertical connecting part; 211. First hook groove; 212. First insertion groove; 213. Vertical baffle; 214. Mounting groove; 22. Horizontal support part;

[0033] 3. Wiring assembly; 31. Contact plate; 311. Serrated edge; 32. Conductive rod; 33. Fastening screw;

[0034] 4. Contactor; 41. Positioning protrusion; 411. Second insertion slot; 4111. Main slot; 4112. Sliding slot; 412. Snap-fit ​​boss. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0036] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0039] Example 1

[0040] As shown in Figures 1-6, this utility model embodiment provides an overload relay, which includes a relay 1 and a mounting base 2. Along the height direction of the overload relay (i.e., the Z-axis shown in the figure), the relay 1 is provided with hooks 11 and insert plates 12 spaced apart. The mounting base 2 is provided with first hook grooves 211 and first insertion grooves 212 spaced apart. When the relay 1 and the mounting base 2 are connected to each other, the hooks 11 and the first hook grooves 211 are hooked together. Then, the relay 1 is rotated with the first hook grooves 211 as the fulcrum so that the insert plates 12 are inserted into the first insertion grooves 212.

[0041] The overload relay is hooked to the first hooking slot 211 by hooking the hook 11 and plugging the plug plate 12 to the first plugging slot 212. This allows the relay 1 and the mounting base 2 to be hooked and connected at the same time. The relay 1 can also be plugged into the mounting base 2, making the connection between the relay 1 and the mounting base 2 firm and reliable, effectively reducing the probability of the relay 1 accidentally falling off. Moreover, when installing the relay 1 and the mounting base 2, the relay 1 and the mounting base 2 are hooked first, and then the relay 1 is rotated to make the relay 1 and the mounting base 2 plugged in, making the installation of the relay 1 and the mounting base 2 convenient.

[0042] Optionally, the mounting base 2 includes a vertically connected portion 21 and a horizontal support portion 22 that are perpendicularly connected to each other. The vertically connected portion 21 is provided with a first hook groove 211 and a first insertion groove 212. The relay 1 is provided with a hook 11 and a plug plate 12 on the side facing the vertically connected portion 21. When the relay 1 and the mounting base 2 are connected, the relay 1 is supported on the horizontal support portion 22 to further improve the connection firmness and reliability of the relay 1.

[0043] Furthermore, along the width direction of the overload relay (i.e., the X-axis in the figure), the vertical connection part 21 is provided with two spaced vertical baffles 213. When the relay 1 and the mounting base 2 are connected, the relay 1 is limited to the two vertical baffles 213. This structure can effectively prevent the relay 1 and the mounting base 2 from swaying and improve the connection stability.

[0044] The overload relay also includes a wiring assembly 3, which includes three contact plates 31. The end of each contact plate 31 away from the relay 1 is connected to an external wire via a fastening screw 33. Each contact plate 31 has serrations 311 at both ends along the width of the overload relay. The vertical connecting part 21 has three mounting slots 214 corresponding to each contact plate 31. Multiple contact plates 31 are respectively and correspondingly arranged in multiple mounting slots 214. The serrations 311 are press-fitted with the slot walls of the mounting slots 214. By setting serrations 311 at both ends of the contact plates 31 and press-fitting the serrations 311 with the slot walls of the mounting slots 214, the friction between the contact plates 31 and the slot walls of the mounting slots 214 can be increased, and the contact plates 31 can be prevented from falling out without the need for fasteners.

[0045] Furthermore, the wiring assembly 3 also includes three conductive rods 32 corresponding to the contact plate 31. The conductive rods 32 are L-shaped rods. The vertical rods of the conductive rods 32 are connected to the relay 1, and the horizontal rods of the conductive rods 32 extend into the corresponding mounting grooves 214 and make conductive contact with the end of the contact plate 31 near the relay 1. The horizontal rods are then pressed against the contact plate 31 by mounting fastening screws 33.

[0046] Understandably, when it is necessary to disassemble relay 1, the fastening screw 33 of the crossbar must be loosened in order to disassemble relay 1.

[0047] Optionally, the dimension of the insert plate 12 along the height direction of the overload relay is smaller than the dimension of the first insertion slot 212 along the height direction of the overload relay. When the insert plate 12 is inserted into the first insertion slot 212, the insert plate 12 elastically abuts against the upper groove surface of the first insertion slot 212. The upper groove surface of the first insertion slot 212 is the groove surface of the first insertion slot 212 near the hook 11 along the height direction of the overload relay. After the hook 11 and the first insertion slot 212 are connected, when the insert plate 12 and the first insertion slot 212 are inserted, the insert plate 12 elastically abuts against the upper groove surface of the first insertion slot 212, so that the relay 1 and the mounting base 2 are firmly connected. Furthermore, by making the dimension of the insert plate 12 along the height direction of the overload relay smaller than the dimension of the first insertion slot 212 along the height direction of the overload relay, the insert plate 12 has space for elastic deformation when the relay 1 is disassembled, so as to facilitate disassembly.

[0048] In this embodiment, the first insertion slot 212 is a rectangular opening that passes through the vertical connecting part 21.

[0049] In this embodiment, along the width direction of the overload relay, the relay 1 is provided with two spaced hooks 11, and the mounting base 2 is provided with two spaced first hook slots 211. The two hooks 11 are hooked and connected to the two first hook slots 211 respectively. By hooking and connecting the two hooks 11 to the two first hook slots 211 respectively, the connection between the relay 1 and the mounting base 2 is made more stable.

[0050] Example 2

[0051] As shown in Figures 7-9, the combined electrical component provided in this embodiment of the present invention includes a relay 1 and a contactor 4. Along the height direction of the combined electrical component (i.e., the Z-axis shown in the figure), the relay 1 is provided with a hook 11 and a plug plate 12 distributed at intervals, and the contactor 4 is provided with a second hook groove and a second plug groove 411 distributed at intervals. When the relay 1 and the contactor 4 are connected to each other, the hook 11 is hooked and connected to the second hook groove, and then the relay 1 is rotated with the second hook groove as the fulcrum so that the plug plate 12 is inserted into the second plug groove 411.

[0052] This combined electrical component is connected via hook 11 and the second hook slot, and plugged into the plug plate 12 and the second plug slot 411. This allows the relay 1 and contactor 4 to be connected simultaneously, while the relay 1 can also be plugged into the mounting base 2. This ensures a secure and reliable connection between the relay 1 and contactor 4, reducing the probability of them disengaging. Furthermore, when connecting the relay 1 and contactor 4, the relay 1 and contactor 4 are first connected, and then the relay 1 is rotated to plug the relay 1 and contactor 4 into place, making the installation of the relay 1 and contactor 4 convenient.

[0053] Specifically, the contactor 4 is provided with a positioning protrusion 41 on the side facing the relay 1. The positioning protrusion 41 is provided with a second insertion groove 411. By providing a positioning protrusion 41 on the outer surface of the contactor 4 and providing the second insertion groove 411 on the positioning protrusion 41, it is possible to avoid slotting the contactor 4 and affecting the performance of the contactor 4.

[0054] Optionally, the plug-in plate 12 includes a main board 121 and sliding portions 122 disposed at both ends of the main board 121 along the width direction of the combined electrical component (i.e., the X-axis in the figure); the second plug-in slot 411 includes a main slot 4111 and sliding slots 4112 disposed on both sides of the main slot 4111 along the width direction of the combined electrical component. When the plug-in plate 12 is plugged into the second plug-in slot 411, the main board 121 is disposed in the main slot 4111, and the two sliding portions 122 are respectively inserted into the two sliding slots 4112. By the two sliding portions 122 being respectively inserted into the two sliding slots 4112, the positioning protrusion 41 on the contactor 4 can support the relay 1.

[0055] In this embodiment, the combined electrical component also includes a wiring assembly 3, which is disposed in the mounting slot 214 of the contactor 4. The connection method of the conductive rod 32 in the wiring assembly 3 is the same as in Embodiment 1, and will not be described again here. When the plug plate 12 and the second plug slot 411 are plugged in, the positioning protrusion 41 can support the relay 1 to facilitate tightening the fastening screw 33 to fix the conductive rod 32.

[0056] Furthermore, the main board 121 is provided with a snap-fit ​​groove 1211, and the upper wall of the main groove 4111 is provided with a downwardly protruding snap-fit ​​boss 412. When the plug-in plate 12 is plugged into the second plug-in groove 411, the snap-fit ​​boss 412 snaps into the snap-fit ​​groove 1211, which can prevent the plug-in plate 12 from accidentally coming out of the second plug-in groove 411, so that the connection between the plug-in plate 12 and the second plug-in groove 411 is more secure, effectively preventing the relay 1 and the contactor 4 from accidentally coming apart.

[0057] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An overload relay, characterized in that, The system includes a relay (1) and a mounting base (2). Along the height direction of the overload relay, the relay (1) is provided with a hook (11) and a plug plate (12) distributed at intervals. The mounting base (2) is provided with a first hook groove (211) and a first plug groove (212) distributed at intervals. The hook (11) is hooked to the first hook groove (211), and the plug plate (12) is plugged into the first plug groove (212).

2. The overload relay according to claim 1, characterized in that, The mounting base (2) includes a vertically connected vertical connecting part (21) and a horizontal support part (22). The relay (1) is supported on the horizontal support part (22). The vertical connecting part (21) is provided with the first hook groove (211) and the first insertion groove (212). The relay (1) is provided with the hook (11) and the insertion plate (12) on the side facing the vertical connecting part (21).

3. The overload relay according to claim 2, characterized in that, Along the width direction of the overload relay, the vertical connecting part (21) is provided with two spaced vertical baffles (213), and the relay (1) is limited to being located between the two vertical baffles (213).

4. The overload relay according to claim 2, characterized in that, The overload relay also includes a wiring assembly (3), which includes a contact plate (31). Both ends of the contact plate (31) along the width direction of the overload relay are provided with serrations (311). The vertical connecting part (21) is provided with a mounting groove (214) corresponding to the contact plate (31). The contact plate (31) is disposed in the mounting groove (214), and the serrations (311) are interference-fitted with the groove wall of the mounting groove (214).

5. The overload relay according to claim 1, characterized in that, The dimension of the insert plate (12) along the height direction of the overload relay is smaller than the dimension of the first plug slot (212) along the height direction of the overload relay, and the insert plate (12) elastically abuts against the upper groove surface of the first plug slot (212).

6. The overload relay according to claim 1, characterized in that, Along the width direction of the overload relay, the relay (1) is provided with two spaced hooks (11), and the mounting base (2) is provided with two spaced first hook grooves (211). The two hooks (11) are respectively hooked and connected to the two first hook grooves (211).

7. A modular electrical component, characterized in that, The assembly includes a relay (1) and a contactor (4). Along the height direction of the combined electrical components, the relay (1) is provided with a hook (11) and a plug plate (12) distributed at intervals, and the contactor (4) is provided with a second hook groove and a second plug groove (411) distributed at intervals. The hook (11) is hooked to the second hook groove, and the plug plate (12) is plugged into the second plug groove (411).

8. The combined electrical component according to claim 7, characterized in that, The contactor (4) is provided with a positioning protrusion (41) on the side facing the relay (1), and the positioning protrusion (41) is provided with the second insertion groove (411).

9. The combined electrical component according to claim 7, characterized in that, The plug-in plate (12) includes a main board (121) and sliding inserts (122) disposed at both ends of the main board (121) along the width direction of the combined electrical component; the second plug-in slot (411) includes a main slot (4111) and sliding slots (4112) disposed on both sides of the main slot (4111) along the width direction of the combined electrical component, the main board (121) is disposed in the main slot (4111), and the two sliding inserts (122) are respectively inserted into the two sliding slots (4112).

10. The combined electrical component according to claim 9, characterized in that, The motherboard (121) is provided with a snap-fit ​​slot (1211), and the main slot (4111) is provided with a snap-fit ​​boss (412) for snapping with the snap-fit ​​slot (1211).

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