A winch relay

Abstract

The utility model belongs to the field of capstan relay, provide a kind of capstan relay, comprising: shell, inside configuration has accommodating cavity;First relay and second relay, are arranged in accommodating cavity, and reserved intercommunication gap between first relay and second relay;Circuit board, is located above first relay and second relay, and connecting hole is formed on circuit board.Compared with prior art, the utility model has the advantages that the series intercommunication of same function contact on two relays is realized by circuit board, effectively reduce the design of contact, avoid the phenomenon that multiple lead-out circuit is easily caused winding, even damage, simultaneously, strong magnet is ingeniously arranged in the intercommunication gap between two relays, make full use of the space of capstan relay, realize the organic unification of arc extinguishing function and compact structure, prolong the service life of relay, improve the safety and reliability of the capstan relay.

Description

Technical Field

[0001] This utility model belongs to the field of winch relays, and specifically relates to a winch relay. Background Technology

[0002] A relay is an electrical device used to control a high-power circuit with a small control signal. It typically consists of an electromagnetic system (including a coil, iron core, and reeds) and one or more sets of contacts. Relays play an important role in a variety of applications, such as home automation, industrial control systems, automotive electronics, and communication equipment.

[0003] Most winch relays on the market currently use a single-relay structure. In the dual-relay structure, two relays for forward and reverse rotation are usually connected by plugging them into a socket and relying on multiple wires to lead them out. This structure not only makes the wires prone to tangling and damage due to exposure, but also the multi-contact structure has limited effectiveness under high load and high frequency operation conditions, lacks protection under high load voltage, and can severely burn the contacts, affecting the service life of the winch relay. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a winch relay with a simple structure, good stability, and improved integration and reliability.

[0005] The objective of this utility model can be achieved by addressing the following technical problem: a winch relay is proposed, comprising: a housing with an internal receiving cavity;

[0006] The first relay and the second relay are arranged side by side in the receiving cavity, and a communication gap is reserved between the first relay and the second relay;

[0007] A circuit board is disposed above the first relay and the second relay. A connection hole is formed on the circuit board, through which contact structures with the same function in the first relay and the second relay are electrically connected and connected in series to the circuit board.

[0008] A strong magnet is fixedly installed within the communication gap to generate a magnetic field when the load voltage exceeds a preset threshold, thereby driving the arc to deflect and achieving magnetic arc extinguishing at the contact point.

[0009] In the aforementioned winch relay, a limiting groove is formed on the circuit board, and a fixed plug is connected to both the first relay and the second relay. The fixed plug is movably engaged in the limiting groove.

[0010] In the aforementioned winch relay, a cover plate is also provided within the communication gap. The cover plate is located above the strong magnet to prevent glue from leaking into the receiving cavity.

[0011] In the aforementioned winch relay, both the first relay and the second relay have housings, and the housings have stepped blocks, with the housings placed on the stepped blocks.

[0012] In the aforementioned winch relay, both the first relay and the second relay further include a base frame, the outer casing is fitted onto the base frame, a support block is formed on the bottom wall of the receiving cavity, and the base frame is placed on the support block.

[0013] In the aforementioned winch relay, an elastic buckle is formed on the housing, and a first inclined surface is formed on the elastic buckle. A locking block is provided on the housing at the opening end of the receiving cavity, and a second inclined surface is formed on the locking block. The elastic buckle can be squeezed and deformed when it moves against the second inclined surface on the first inclined surface, and can move and lock onto the locking block after crossing.

[0014] In the aforementioned winch relay, a fixed baffle and an anti-detachment plate are further provided in the receiving cavity. The fixed baffle forms a semi-sealed cavity within the receiving cavity. One end of the semi-sealed cavity opens towards the first relay, and the other end opens in line with the opening of the receiving cavity. The anti-detachment plate is located at the opening of the semi-sealed cavity facing the first relay and is used to restrict the strong magnet within the semi-sealed cavity from tilting.

[0015] In the aforementioned winch relay, the inner wall of the receiving cavity is symmetrically provided with positioning blocks, and each positioning block is formed with a guide slope. The guide slope is used to guide the cover plate to the fixed baffle and to make the two ends of the cover plate move and abut against the positioning block.

[0016] In the aforementioned winch relay, a limiting block is formed on the inner wall of the fixed baffle. The limiting block is located within the semi-sealed cavity and is used to limit the relative position between the strong magnet and the housing.

[0017] In the aforementioned winch relay, the inner wall of the receiving cavity is further provided with a clearance portion. Both the first relay and the second relay include an external contact that extends into the clearance portion and is used to movably abut against the spring contact end on the relay.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) The present invention provides a winch relay that realizes the series connection of the same functional contacts on two relays through the circuit board, effectively reducing the design of the contact angle and avoiding the phenomenon of entanglement or even damage caused by the use of multiple lead wires. At the same time, the strong magnet is cleverly arranged in the connection gap between the two relays, making full use of the space of the winch relay, realizing the organic unity of arc extinguishing function and compact structure, extending the service life of the relay, and improving the safety and reliability of the winch relay.

[0020] (2) The inclined guide between the elastic buckle and the locking block allows the relay to be automatically guided and elastically snapped into place when the outer shell is installed into the housing, thus achieving tool-free quick locking. This structure is easy to operate and has a firm connection, effectively preventing the risk of falling off due to vibration during use. At the same time, it has good disassembly and maintenance capabilities, improving the product's maintainability and ease of assembly.

[0021] (3) By adding a cover plate above the strong magnet, the glue can be effectively blocked from flowing into the connecting gap or even covering the surface of the strong magnet, so as to avoid the glue affecting the magnetic field distribution or causing the magnetic properties to decay. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this application;

[0023] Figure 2 yes Figure 1 Schematic diagram of the cross section at point AA;

[0024] Figure 3 This is a schematic diagram of the shell structure;

[0025] Figure 4 This is a schematic diagram of the first relay.

[0026] In the diagram, 1 is the shell; 10 is the receiving cavity; 100 is the support block; 101 is the fixing baffle; 101a is the semi-sealed cavity; 101b is the limiting block; 102 is the anti-detachment plate; 103 is the positioning block; 103a is the guide ramp; 104 is the clearance part; 11 is the step block; 12 is the locking block; and 120 is the second ramp.

[0027] 20. First relay; 21. Second relay; 220. Communication gap; 221. Fixed plug; 222. Housing; 222a. Elastic snap; 222b. First inclined surface; 223. Base frame; 224. External contact; 225. Spring;

[0028] 3. Circuit board; 30. Connecting hole; 31. Limiting groove; 32. Connecting plug;

[0029] 4. Strong magnet;

[0030] 5. Cover plate. Detailed Implementation

[0031] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings to further illustrate the technical solutions of the present invention. However, the present invention is not limited to these embodiments.

[0032] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0033] like Figures 1 to 4 As shown, this utility model discloses a winch relay, which includes a housing 1, a first relay 20, a second relay 21, a circuit board 3, and a strong magnet 4.

[0034] The housing 1 has an internal cavity 10; a first relay 20 and a second relay 21 are arranged side by side in the cavity 10, with a communication gap 220 reserved between them; a circuit board 3 is located above the first relay 20 and the second relay 21, and a connection hole 30 is formed on the circuit board 3. The contact structures with the same function in the first relay 20 and the second relay 21 are electrically connected through the connection hole 30 and connected in series to the circuit board 3; a strong magnet 4 is fixedly installed in the communication gap 220 and is used to generate a magnetic field when the load voltage exceeds a preset threshold, driving the arc to deflect so as to achieve magnetic arc extinguishing of the contacts.

[0035] When a control signal is input to circuit board 3, circuit board 3 transmits the electrical signal to the coil terminals of the first relay 20 and the second relay 21. The coils are energized to generate electromagnetic force, thereby driving the moving contact to close with the stationary contact. At this time, current flows through the contact structure of the first relay 20 and the second relay 21, and through the connection hole 30 on circuit board 3 to achieve parallel conduction, jointly bearing the high current load and ensuring stable power supply. Figures 1 to 4 As shown, this solution establishes a connection gap 220 between two parallel first / second relays 21, and installs a strong magnet 4 within this gap. When an arc is generated due to high load voltage during relay operation, the magnetic field generated by the strong magnet 4 can directionally guide and rapidly elongate the arc, achieving efficient magnetic blowout arc extinguishing, significantly improving arc extinguishing speed and reliability, and extending contact life. Simultaneously, the integrated design of the circuit board 3 allows for the electrical connection and series connection of the contact structures of the two relays with the same function to the circuit board 3 via connection holes 30. This effectively reduces the design of contact angles on the first / second relays 21, avoiding the entanglement or even damage caused by multiple lead-out lines, improving the consistency of electrical connections and assembly efficiency, reducing external wiring complexity, and enhancing the overall structural compactness and system stability.

[0036] A limiting groove 31 is formed on the circuit board 3. The first relay 20 and the second relay 21 are both connected to a fixed plug 221, which is movably engaged in the limiting groove 31.

[0037] like Figure 1 As shown, this embodiment achieves snap-fit ​​positioning by using the limiting groove 31 on the circuit board 3 in conjunction with the fixing plug 221 on the relay. This not only enables rapid alignment and stable connection between the circuit board 3 and the relay, but also effectively prevents misalignment or loosening during assembly, enhancing the reliability of electrical contact. Furthermore, this structure eliminates the need for additional screws or adhesive materials for initial fixation, simplifying the assembly process and improving production efficiency and product consistency. Preferably, this embodiment also includes a connecting plug 32 on the circuit board 3.

[0038] A cover plate 5 is also provided inside the connecting gap 220. The cover plate 5 is located above the strong magnet 4 to prevent glue from leaking into the receiving cavity 10.

[0039] like Figure 1 and Figure 2 As shown, in this embodiment, a cover plate 5 is added above the strong magnet 4. The cover plate 5 can effectively block the glue from flowing into the connecting gap 220 or even covering the surface of the strong magnet 4 during the potting process, so as to avoid the glue affecting the magnetic field distribution or causing the magnetic performance to decay, and ensure the long-term stability and reliability of the magnetic blowout arc extinguishing function. At the same time, the presence of the cover plate 5 also protects the strong magnet 4 from mechanical damage or contamination, and improves the environmental adaptability and service life of the product.

[0040] Both the first relay 20 and the second relay 21 have a housing 222, and a step block 11 is formed on the housing 1, with the housing 222 placed on the step block 11.

[0041] like Figures 1 to 4 As shown, the outer shell 222 in this embodiment consists of two parts, one of which is Figure 1 The top wall housing 222 structure of the mounting and fixing plug 221 shown is another one. Figure 4 The L-shaped structure shown, together with the other two components, forms the housing 222 described in this solution. To ensure that the first / second relays 21 are assembled side-by-side and aligned in the receiving cavity 10, this embodiment utilizes the stepped block 11 on the housing 1 to support the relay housing 222 (this housing 222 is the structure of the former mentioned above, i.e.) Figure 1 The structure shown enables the relay to be positioned and installed within the housing cavity 10, allowing for precise control of the relay's position in the height direction. This avoids poor connection or internal interference issues on the circuit board 3 due to stacking errors, improves component assembly accuracy and overall structural stability, and facilitates automated mass production.

[0042] Both the first relay 20 and the second relay 21 also include a base frame 223, with the outer shell 222 sleeved on the base frame 223. The bottom wall of the receiving cavity 10 forms a support block 100, and the base frame 223 is placed on the support block 100.

[0043] like Figure 3 and Figure 4 As shown, with the outer casing 222 placed on the stepped block 11, the load-bearing capacity of the relay bottom is further enhanced by the cooperation of the base frame 223 and the support block 100, making the force more even and improving the overall structure's seismic resistance and impact resistance. At the same time, the design of the outer casing 222 being fitted onto the outside of the base frame 223 facilitates modular assembly, while the double-layer support structure (stepped block 11 and support block 100) works synergistically on the base frame 223 and the outer casing 222, significantly enhancing the installation stability of the first / second relay 21 within the casing 1, reducing vibration displacement during operation, and ensuring safe and reliable electrical connections.

[0044] An elastic buckle 222a is formed on the outer shell 222, and a first inclined surface 222b is formed on the elastic buckle 222a. A locking block 12 located at the opening end of the receiving cavity 10 is provided on the housing 1. A second inclined surface 120 is formed on the locking block 12. The elastic buckle 222a can be squeezed and deformed when it moves against the second inclined surface 120 on the first inclined surface 222b, and can be locked onto the locking block 12 after crossing.

[0045] Continue to refer to Figure 3 and Figure 4 As shown in the structure, during assembly, as the first inclined surface 222b moves against the second inclined surface 120, the elastic buckle 222a undergoes elastic deformation to cross the locking block 12. Once the elastic buckle 222a completely crosses the locking block 12, it can then press against the bottom wall of the locking block 12 to complete the locking function. Therefore, in this embodiment, the elastic buckle 222a and the locking block 12 are guided by inclined surfaces, allowing the relay to automatically guide and elastically engage into the housing 1, achieving tool-free and rapid locking. The overall structure is easy to operate, firmly connected, effectively preventing the risk of detachment due to vibration during use, and also possesses good disassembly and maintainability, improving the product's repairability and ease of assembly.

[0046] The receiving cavity 10 is also provided with a fixed baffle 101 and an anti-detachment plate 102. The fixed baffle 101 surrounds the receiving cavity 10 to form a semi-sealed cavity 101a. One end of the semi-sealed cavity 101a opens towards the first relay 20, and the other end opens in line with the opening of the receiving cavity 10. The anti-detachment plate 102 is located at the opening of the semi-sealed cavity 101a facing the first relay 20, and is used to limit the tilting of the strong magnet 4 inside the semi-sealed cavity 101a.

[0047] like Figure 3 As shown, in this embodiment, the semi-sealed cavity 101a formed by the fixed baffle 101 provides an independent and stable installation space for the strong magnet 4, preventing it from moving laterally during assembly or use; while the anti-detachment plate 102 set at the side opening effectively prevents the strong magnet 4 from tilting or sliding out towards the first relay 20, ensuring that it is always in the correct position, thereby ensuring that the magnetic field direction matches the arc path and maintaining the best arc extinguishing effect. This structure takes into account both accurate positioning and anti-misplacement function, improving the working reliability of key components.

[0048] The inner wall of the fixed baffle 101 forms a limiting block 101b, which is located in the semi-sealed cavity 101a and is used to limit the relative position between the strong magnet 4 and the housing 1.

[0049] Furthermore, such as Figure 3 As shown, in this embodiment, the position of the strong magnet 4 in the semi-sealed cavity 101a is further restricted by the limiting block 101b, so as to ensure that its relative position with the relay contact is constant, thereby maintaining the effective control capability of the magnetic field on the arc. This structure enhances the stability of the magnetic circuit system and helps to achieve consistent and reliable arc extinguishing performance.

[0050] The inner wall of the receiving cavity 10 is symmetrically provided with positioning blocks 103. Each positioning block 103 has a guide slope 103a. The guide slope 103a is used to guide the cover plate 5 to the fixed baffle 101 and to move both ends of the cover plate 5 against the positioning block 103.

[0051] like Figure 3 As shown, the positioning block 103 and its guiding slope 103a in this embodiment can play an automatic guiding role during the installation of the cover plate 5, ensuring that the cover plate 5 falls accurately into the predetermined position above the fixed baffle 101, avoiding manual alignment deviation; for this reason, the two ends of the cover plate 5 are clamped by the positioning block 103 to form a stable support, preventing it from shifting or warping during subsequent glue filling or transportation, thereby continuously playing the role of preventing glue leakage and protecting the strong magnet 4, improving product yield and sealing reliability.

[0052] The inner wall of the receiving cavity 10 is also formed with a clearance portion 104. The first relay 20 and the second relay 21 both include an external contact 224. The external contact 224 extends into the clearance portion 104 and is used to move against the contact end of the spring 225 on the relay.

[0053] like Figure 3 and Figure 4As shown, the avoidance part 104 in this embodiment provides a dedicated space channel for the outer contact 224, avoiding contact deformation or insufficient contact pressure caused by interference from the inner wall of the housing 1. This design optimizes the internal layout, ensures low impedance and high reliability of the current path, and allows the contact to have appropriate elastic deformation space during operation, thereby improving sensitivity and durability.

[0054] It should be noted that the structure (spring 225, contacts, fixed plug 221, etc.) and working principle of the first relay 20 and the second relay 21 referred to in this embodiment are all existing technologies, and will not be described in detail here.

[0055] It should be noted that in this invention, the use of terms such as "first," "second," and "a" is 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 as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0056] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0057] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A winch relay, characterized in that, include: The housing has an internal cavity. The first relay and the second relay are arranged side by side in the receiving cavity, and a communication gap is reserved between the first relay and the second relay; A circuit board is disposed above the first relay and the second relay. A connection hole is formed on the circuit board, through which contact structures with the same function in the first relay and the second relay are electrically connected and connected in series to the circuit board. A strong magnet is fixedly installed within the communication gap to generate a magnetic field when the load voltage exceeds a preset threshold, thereby driving the arc to deflect and achieving magnetic arc extinguishing at the contact point.

2. A winch relay according to claim 1, characterized in that, A limiting slot is formed on the circuit board, and a fixed plug is connected to both the first relay and the second relay. The fixed plug is movably engaged in the limiting slot.

3. A winch relay according to claim 1, characterized in that, A cover plate is also provided in the communication gap, and the cover plate is located above the strong magnet to prevent glue from leaking into the receiving cavity.

4. A winch relay according to claim 3, characterized in that, Both the first relay and the second relay have housings formed on them, and stepped blocks are formed on the housings, with the housings placed on the stepped blocks.

5. A winch relay according to claim 4, characterized in that, Both the first relay and the second relay further include a base frame, the outer casing is fitted onto the base frame, the bottom wall of the receiving cavity is formed with a support block, and the base frame is placed on the support block.

6. A winch relay according to claim 4, characterized in that, An elastic buckle is formed on the outer shell, and a first inclined surface is formed on the elastic buckle. A locking block is provided on the outer shell at the opening end of the receiving cavity, and a second inclined surface is formed on the locking block. The elastic buckle can be squeezed and deformed when it moves against the second inclined surface on the first inclined surface, and can move and lock onto the locking block after crossing.

7. A winch relay according to claim 3, characterized in that, The receiving cavity is also provided with a fixed baffle and an anti-detachment plate. The fixed baffle forms a semi-sealed cavity within the receiving cavity. One end of the semi-sealed cavity opens towards the first relay, and the other end opens in line with the opening of the receiving cavity. The anti-detachment plate is located at the opening of the semi-sealed cavity facing the first relay and is used to prevent the strong magnet inside the semi-sealed cavity from tilting.

8. A winch relay according to claim 7, characterized in that, The inner wall of the receiving cavity is symmetrically provided with positioning blocks, and each positioning block is formed with a guide slope. The guide slope is used to guide the cover plate to the fixed baffle and to make the two ends of the cover plate move and abut against the positioning block.

9. A winch relay according to claim 7, characterized in that, The inner wall of the fixed baffle forms a limiting block, which is located in the semi-sealed cavity and is used to limit the relative position between the strong magnet and the housing.

10. A winch relay according to claim 1, characterized in that, The inner wall of the receiving cavity is also formed with a clearance portion. Both the first relay and the second relay include an external contact. The external contact extends into the clearance portion and is used to move against the spring contact end on the relay.

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