Contact connection structure of a dual power switch

Abstract

The utility model discloses a kind of contact connection structures of dual power switch, including contact seat, contact piece and seat cover. Connection hole and contact piece slot are equipped on contact seat, and contact piece slot bottom has positioning lug;Contact piece includes integrally-formed contact end, fitting segment and welding end, fitting segment is inserted into contact piece slot and bottom is equipped with the clamping groove that is engaged with positioning lug, and contact end and welding end extend out of contact seat;Seat cover is covered on the contact seat above contact piece and press contact piece in contact piece slot.The structure is fixed by the clamping of contact piece and contact seat and the pressing of seat cover, without bolt and glue, simplify assembly process, facilitate automation production, reduce cost, while seat cover covers contact piece and increases creepage distance, effectively prevent short circuit, improve safety performance.

Description

Technical Field

[0001] This utility model relates to the technical field of dual power switch accessories, specifically to a contact connection structure for a dual power switch. Background Technology

[0002] In electrical control systems, dual power switches are key components ensuring continuous and reliable power supply. The stability, safety, and assembly efficiency of their contact connection structure directly affect the overall performance of the equipment. The connection between the contacts and the contact base is the core link in the conduction of the internal circuit of the dual power switch, and it must meet requirements such as excellent conductivity, robust mechanical connection, and sufficient insulation protection.

[0003] In existing technologies, the connection between the contacts and the contact base of a dual-power switch is usually achieved by bolt fixing: that is, after the contacts are embedded in the contact slots of the contact base, they are locked and positioned by bolts that pass through the contacts and the contact base, such as the contact structure of a dual-power transfer switch disclosed in application number CN202021290852.6. Although this structure can ensure connection strength to a certain extent, it has obvious drawbacks: on the one hand, the bolt tightening process requires manual or special equipment to operate one by one, and the assembly steps are cumbersome, which not only increases production time, but also makes it difficult to meet the high-efficiency production requirements of automated production lines; on the other hand, after assembly, part of the contact structure is exposed to the external environment, and its creepage distance with adjacent conductive parts is relatively short, which can easily cause short circuit faults due to dust, moisture or accidental contact with conductive objects, seriously affecting the safe operation of the switch.

[0004] To mitigate the aforementioned short-circuit risk, some designs incorporate an additional sealing process on the outside of the contact slot, using adhesive to coat the exposed contact portion and improve insulation performance. However, this measure further complicates assembly—factors such as controlling the amount of adhesive applied and the adhesive curing time affect production efficiency, while the added cost of the adhesive also increases the overall manufacturing cost.

[0005] Therefore, in view of the problems of complex assembly, high cost and short circuit risk in the existing dual power switch contact connection structure, there is an urgent need for a new contact connection structure that can simplify the assembly process, reduce production costs and effectively improve safety performance. Utility Model Content

[0006] To address the shortcomings in the prior art, this utility model provides a contact connection structure for a dual power switch.

[0007] The technical solution adopted in this utility model is: a contact connection structure for a dual power switch, comprising:

[0008] A contact seat, wherein the contact seat is provided with a connection hole and a contact slot, and the bottom of the contact slot is provided with a raised positioning protrusion;

[0009] The contact piece includes an integrally formed contact end, a fitting section, and a welding end. The fitting section is inserted into the contact piece groove, and the bottom of the fitting section is provided with a fitting groove that engages with a positioning protrusion. Both the contact end and the welding end extend out of the contact seat.

[0010] A cover is placed on the contact seat above the contact piece, pressing the contact piece into the contact piece groove.

[0011] Furthermore, the connecting hole has a regular polygonal structure.

[0012] Furthermore, the contact groove includes a straight segment and an arc-shaped segment surrounding the outer periphery of the connection hole, with the positioning protrusion located at the bottom of the straight segment.

[0013] Furthermore, the contact seat is provided with a raised cover step and a column concentrically arranged with the connection hole, and the seat cover is provided with a cover cavity that cooperates with the cover step and a column hole for the column to pass through.

[0014] Furthermore, the outer periphery of the seat cover is provided with elastic plates at intervals, the end of the elastic plate is provided with a connecting hook, the outer periphery of the contact seat is provided with a connecting groove corresponding to the elastic plate, and the bottom of the connecting groove is provided with a groove for the connecting hook to be engaged and locked.

[0015] The beneficial effects of this utility model are:

[0016] 1. Simplified assembly process. Compared to existing technologies that rely on bolt fastening, this structure achieves initial positioning through the engagement of the contact piece fitting section with the contact piece groove of the contact seat, and the cooperation of the positioning protrusion and the engaging groove. Then, the seat cover completes the fixing process, eliminating the need for bolt tightening throughout. This removes the tedious steps of manually or using specialized equipment to tighten bolts one by one, reducing assembly time and better meeting the high-efficiency production requirements of automated production lines, thus contributing to improved overall production efficiency.

[0017] 2. Reduced production costs and fewer extra steps. Existing technologies require an additional sealing process to prevent short circuits caused by exposed contacts. This not only necessitates controlling the amount of adhesive applied and waiting for it to cure, but also adds to the cost of the adhesive itself. In contrast, this invention uses a cover that directly covers the contacts, effectively providing insulation without the need for additional adhesive. This eliminates the material and time costs associated with adhesive application, simplifies the production process, and significantly reduces overall manufacturing costs.

[0018] 3. Enhanced safety performance and reduced short-circuit risk. The cover effectively increases the creepage distance between the contacts and adjacent conductive parts, preventing short-circuit faults caused by dust, moisture, or accidental contact with conductive materials. Simultaneously, the contacts utilize a dual fixing method of interlocking and pressing, ensuring a connection strength comparable to traditional bolt fixing. This reduces safety hazards such as poor contact or arcing caused by loose connections, further guaranteeing the safe and stable operation of the dual-power switch.

[0019] In addition to the objectives, features and advantages described above, this utility model has other objectives, features and advantages.

[0020] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is an exploded view of the present invention.

[0023] Figure 3 This is a cross-sectional schematic diagram of the present invention.

[0024] Figure 4 This is a schematic diagram of the structure of the seat cover.

[0025] Figure 5 This is a schematic diagram of the contact seat structure.

[0026] Figure 6 This is a schematic diagram of the contact seat from another perspective.

[0027] Figure 7 This is a schematic diagram of the contact plate structure.

[0028] Figure 8 This is a structural schematic diagram of the seat cover from another perspective.

[0029] Figure 1-8 In the middle: 1. Contact seat; 2. Connecting hole; 3. Contact groove; 4. Positioning protrusion; 5. Contact piece; 6. Contact end; 7. Fitting section; 8. Welding end; 9. Engaging groove; 10. Straight section; 11. Arc section; 12. Covering step; 13. Column; 14. Covering cavity; 15. Column hole; 16. Elastic plate; 17. Connecting hook; 18. Connecting long groove; 19. Groove; 20. Seat cover. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0032] This utility model provides a contact connection structure for a dual power switch.

[0033] In this embodiment, refer to Figure 1-8 The contact connection structure of the dual power switch includes:

[0034] The contact base 1 is provided with a connection hole 2 and a contact groove 3, and a protruding positioning protrusion 4 is provided at the bottom of the contact groove;

[0035] The contact piece 5 includes an integrally formed contact end 6, a fitting section 7, and a welding end 8. The fitting section is inserted into the contact piece groove, and the bottom of the fitting section is provided with a fitting groove 9 that engages with the positioning protrusion. Both the contact end and the welding end extend out of the contact seat.

[0036] The cover 20 covers the contact seat above the contact piece, pressing the contact piece into the contact piece groove.

[0037] In the above technical solution, the connection is achieved through the cooperation of the contact base, the contact piece, and the base cover. The mating section of the contact piece engages with the contact piece groove of the contact base, and the engaging groove at the bottom of the mating section engages with the positioning protrusion at the bottom of the contact base, initially achieving the positioning of the contact piece and the contact base. Then, the base cover is placed on the contact base above the contact piece, pressing the contact piece into the contact piece groove, further fixing the contact piece, and forming a stable connection structure.

[0038] This eliminates the need for traditional bolt fixing, allowing assembly to be completed simply by the engagement of the contact piece and the contact seat, and the pressing of the seat cover. This greatly simplifies the assembly process, facilitates automated production, and improves production efficiency. Simultaneously, the seat cover covers the contact piece, increasing the creepage distance and effectively preventing short circuits. No additional adhesive is required, assembly is simple and easy to automate, reducing production costs and enhancing product safety.

[0039] Specifically, the connecting hole has a regular polygonal structure.

[0040] In this embodiment, the regular polygonal connecting hole is used to connect with the connecting shaft, which can enhance the stability and reliability of the connection, prevent the connection from loosening, and ensure the structural stability of the connection part of the dual power switch during long-term use.

[0041] Specifically, the contact groove includes a straight segment 10 and an arc segment 11 surrounding the outer periphery of the connection hole, and the positioning protrusion is located at the bottom of the straight segment.

[0042] In this embodiment, the structural design of the contact slot is adapted to the structure of the connecting hole and the contact piece, improving the fit and stability of the contact piece installation. The cooperation between the positioning protrusion and the engaging groove enhances the positioning accuracy of the contact piece within the contact slot, prevents displacement of the contact piece during use, ensures the reliability of the contact connection, and improves the overall performance of the product.

[0043] Specifically, the contact seat is provided with a raised cover step 12 and a column 13 concentrically arranged with the connection hole. The seat cover is provided with a cover cavity 14 that cooperates with the cover step and a column hole 15 for the column to pass through.

[0044] In this embodiment, the mating step of the contact seat mates with the mating cavity of the seat cover, providing precise positioning and guidance for the installation of the seat cover, ensuring that the seat cover can accurately fit onto the contact seat. The fit between the column and the column hole further enhances the connection stability between the seat cover and the contact seat.

[0045] Specifically, the outer periphery of the seat cover is provided with elastic plates 16 at intervals, the end of the elastic plate 16 is provided with a connecting hook 17, the outer periphery of the contact seat is provided with a connecting groove 18 corresponding to the elastic plate, and the bottom of the connecting groove is provided with a groove 19 for the connecting hook to be engaged and locked.

[0046] In this embodiment, the elastic plate on the outer periphery of the seat cover has a certain elastic deformation capability. When the seat cover is installed, the elastic plate deforms under force, allowing the connecting hook to smoothly enter the connecting groove on the outer periphery of the contact seat. When the connecting hook reaches the groove at the bottom of the connecting groove, the elastic plate restores its deformation, and the connecting hook snaps into the groove, thus achieving a locking connection between the seat cover and the contact seat.

[0047] Attention all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. A contact connection structure for a dual-power switch, characterized in that... include: A contact seat, wherein the contact seat is provided with a connection hole and a contact slot, and the bottom of the contact slot is provided with a raised positioning protrusion; The contact piece includes an integrally formed contact end, a fitting section, and a welding end. The fitting section is inserted into the contact piece groove, and the bottom of the fitting section is provided with a fitting groove that engages with a positioning protrusion. Both the contact end and the welding end extend out of the contact seat. A cover is placed on the contact seat above the contact piece, pressing the contact piece into the contact piece groove.

2. The contact connection structure of the dual power supply switch according to claim 1, characterized in that: The connecting hole has a regular polygonal structure.

3. The contact connection structure of the dual power supply switch according to claim 1, characterized in that: The contact groove includes a straight section and an arc-shaped section surrounding the outer periphery of the connection hole, and the positioning protrusion is located at the bottom of the straight section.

4. The contact connection structure of the dual power supply switch according to claim 1, characterized in that: The contact seat is provided with a raised cover step and a column concentrically arranged with the connection hole. The seat cover is provided with a cover cavity that mates with the cover step and a column hole for the column to pass through.

5. The contact connection structure of the dual power supply switch according to claim 1 or 4, characterized in that: The outer periphery of the seat cover is provided with elastic plates at intervals, and the end of the elastic plate is provided with a connecting hook. The outer periphery of the contact seat is provided with a connecting groove corresponding to the elastic plate, and the bottom of the connecting groove is provided with a groove for the connecting hook to be fastened and locked.

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