Double-layer contact switch

Abstract

The utility model discloses a double-layer contact switch, which comprises a base, four elastic sheets, a shield and a contact seat, the base is provided with two mounting grooves arranged side by side, the two mounting grooves are internally provided with first steps and second steps, the first steps and the second steps are distributed in an up-and-down staggered manner, the number of the elastic sheets is four, and the elastic sheets are arranged in the two mounting grooves. The four elastic pieces are arranged on the first steps and the second steps of the two installation grooves respectively, one ends of the elastic pieces are installed and fixed through fixing bolts, the ends, located on the first steps and the second steps of the two installation grooves, of the base are provided with wire stretching-in holes, and the protective cover is installed on the base and covers the installation grooves and the elastic pieces. The contact seat can extend into the protective cover and is in contact connection with the four elastic sheets at the same time; according to the double-layer contact switch, through the two mounting grooves arranged side by side on the base and the layered step structure, the four groups of elastic sheets are arranged in a layered manner, so that a single switch can synchronously control two independent circuits, compared with a traditional double-switch scheme, the mounting space is reduced by 50%, the linkage error of multiple switches is avoided, and the control precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of switchgear technology, and more specifically to a double-layer contact switch. Background Technology

[0002] Traditional contact switches, when controlling multi-circuit circuits, typically employ multiple independent switches connected in parallel or use complex wiring to achieve multi-path conduction, resulting in a bulky overall structure and large installation space requirements. For example, existing technologies often require two independent spring structures to achieve dual-circuit control, triggered synchronously by a linkage mechanism. This not only increases the number of parts and production costs but also leads to poor contact stability and asynchronous conduction due to separate contact points. Furthermore, the springs of such switches are often exposed, lacking effective protection and prone to oxidation or short circuits in humid or dusty environments, affecting their service life. While some solutions improve protection by adding protective covers, the connection between the cover and the base is complex, disassembly and maintenance are difficult, and the exposed connection points between the springs and wires still pose safety hazards. Therefore, there is an urgent need for a compact, reliable, and highly protective double-layer contact switch to simplify multi-circuit control structures and improve safety performance. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a double-layer contact switch. This double-layer contact switch arranges four sets of spring contacts in layers through two mounting slots arranged side by side on the base and a layered stepped structure, so that a single switch can simultaneously control two independent circuits. Compared with the traditional double-switch solution, it reduces the installation space by 50%, avoids multi-switch linkage errors, and improves control accuracy.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A double-layer contact switch includes a base, spring contacts, a protective cover, and a contact seat. The base has two mounting slots arranged side by side, each containing a first step and a second step, which are staggered vertically. Four spring contacts are provided, each positioned on the first and second steps of the two mounting slots, with one end of each spring contact fixed by a fixing bolt. The base has wire insertion holes at one end of each of the first and second steps of the two mounting slots. The protective cover is mounted on the base and covers the mounting slots and spring contacts. The contact seat can extend into the protective cover and simultaneously contact and connect with all four spring contacts.

[0006] Furthermore, both the first and second steps are provided with mounting holes, and the mounting holes are provided with internal threads. The spring piece is provided with a through hole, and the fixing bolt passes through the through hole and extends into the mounting hole for threaded connection.

[0007] Furthermore, a pressure plate is provided between the fixing bolt and the spring.

[0008] Furthermore, the base has several slots on both sides, and the bottom of the cover has several elastic plates on both sides. The elastic plates are inserted into the slots for snap-fit ​​connection.

[0009] Furthermore, the protective cover is provided with two slots arranged side by side, which are directly opposite the two mounting slots on the base.

[0010] Furthermore, the contact end of the contact seat is U-shaped, and the U-shaped contact end includes an upper contact layer and a lower contact layer. The upper contact layer can contact and communicate with two spring pieces installed on the first step of the two mounting slots, respectively, and the lower contact layer can contact and communicate with two spring pieces installed on the second step of the two mounting slots, respectively.

[0011] Furthermore, the bottom of the base is provided with several connection holes.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model comprises a base, spring contacts, a protective cover, and a contact seat. An installation groove is provided on the base, with a first step and a second step in each of the two grooves. Four spring contacts are installed on the first and second steps of the two grooves, respectively. This allows the base and spring contacts to be directly connected to two sets of wire circuits for switching on and off, eliminating the need for a traditional contact switch that connects to a single wire and then to two separate wire circuits. This simplifies wiring and provides better overall protection. When connecting the two sets of wire circuits, the contact seat only needs to contact the four spring contacts simultaneously, allowing for rapid connection between the two circuits.

[0014] (1) Dual-loop integrated control: Four sets of spring contacts are arranged in layers through two mounting slots and a layered step structure on the base, so that a single switch can synchronously control two independent circuits. This reduces the installation space by 50% compared to the traditional dual-switch scheme, avoids multi-switch linkage errors, and improves control accuracy.

[0015] (2) Modular wiring design: The wire insertion hole corresponds one-to-one with the spring fixing end, realizing "one hole and one line" direct connection, eliminating the redundant connection of the jumper wire in the traditional switch, and reducing contact resistance and failure rate. The mating structure of the pressure plate and bolts ensures that the wire is firmly crimped and prevents loosening.

[0016] (3) Three-dimensional protection system: The protective cover is connected to the base through an elastic clamp to form a fully enclosed protective cavity, achieving an IP54 protection level. The slot and the U-shaped end of the contact seat adopt a labyrinth-type matching structure, which can guide the contact seat to be inserted accurately and prevent foreign objects from entering, taking into account both ease of operation and environmental adaptability.

[0017] (4) Enhanced synchronous conduction: The U-shaped contact end of the contact seat adopts a layered conductive layer design, which synchronously presses four sets of spring contacts at the moment of insertion, with a conduction time difference of less than 0.1ms, ensuring synchronous transmission of current in the dual circuit. The hemispherical metal contact at the end of the spring contact and the surface contact mode of the contact layer reduce arc loss by 80% compared with the traditional point contact method.

[0018] (5) Quick Maintenance Features: The plug-in connection between the flexible card plate and the card slot allows for manual disassembly and assembly of the protective cover, enabling tool-free inspection or replacement of the spring clips. The standardized connection holes at the bottom of the base support both rail mounting and wall mounting modes, adapting to different scenario requirements. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in 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, wherein:

[0020] Figure 1 A schematic diagram of a double-layer contact switch Figure 1 ;

[0021] Figure 2 A schematic diagram of a double-layer contact switch Figure 2 ;

[0022] Figure 3 for Figure 2 Sectional view of AA;

[0023] Figure 4 A schematic diagram of a double-layer contact switch Figure 3 ;

[0024] Figure 5 This is a schematic diagram of the base structure.

[0025] The markings in the diagram are as follows: 1. Base; 2. Protective cover; 3. Mounting groove; 4. First step; 5. Second step; 6. Mounting hole; 7. Slot; 8. Wire insertion hole; 9. Contact seat; 901. Upper contact layer; 902. Lower contact layer; 10. Slot; 11. Connection hole; 12. Spring; 13. Fixing bolt; 14. Pressure plate. Detailed Implementation

[0026] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0028] A double-layer contact switch, such as Figure 1-5 As shown, the device includes a base, 12 spring pieces, a protective cover, and a contact seat. The base has two 3 mounting slots arranged side by side, each containing a first step and a second step. The first step and the second step are staggered vertically. Four 12 spring pieces are provided, each positioned on the first step and the second step of the two 3 mounting slots, with one end of each spring piece fixed by a fixing bolt. The base has 8 wire insertion holes at one end of each of the first and second steps of the two 3 mounting slots. The protective cover is mounted on the base and covers the 3 mounting slots and the 12 spring pieces. The contact seat can extend into the protective cover and simultaneously contact and connect with the four 12 spring pieces.

[0029] Preferably, the first step 4 and the second step 5 are each provided with a mounting hole 6, the mounting hole 6 is provided with an internal thread, the spring piece 12 is provided with a through hole, and the fixing bolt 13 passes through the through hole and extends into the mounting hole 6 for threaded connection, thereby realizing the installation of the spring piece 12.

[0030] Preferably, a pressure plate 14 is provided between the 13 fixing bolt and the 12 spring sheet. By providing the pressure plate 14, the 13 fixing bolt can better press and fix the 12 spring sheet, and at the same time, it can also ensure the connection and installation between the wire and the 12 spring sheet.

[0031] Preferably, the base 1 has several 7-slots on both sides, and the bottom of the cover 2 has several elastic plates on both sides. The elastic plates are inserted into the 7-slots for snap-fit ​​connection.

[0032] Preferably, the 2-protective cover is provided with two 10 slots arranged side by side, and the two 10 slots are directly opposite the two 3 mounting slots on the 1 base, so that the 9 contact seat can extend into the 2-protective cover through the 10 slots to make contact and conduct with the 12 spring sheet.

[0033] Preferably, the contact end of the 9 contact seat is U-shaped, and the U-shaped contact end includes an upper contact layer 901 and a lower contact layer 902. The upper contact layer 901 can contact and communicate with two 12 spring pieces installed on the first step of the two 3 mounting slots 4 respectively, so that the two 12 spring pieces located on the first step of 4 are connected to each other. The lower contact layer 902 can contact and communicate with two 12 spring pieces installed on the second step of the two 3 mounting slots 5 respectively, so that the two 12 spring pieces located on the second step of 5 are connected to each other.

[0034] Preferably, the end of the 12 spring piece away from the 13 fixing bolt is provided with a metal contact. By providing the metal contact, the connection with the 9 contact seat is released, avoiding direct contact between the release seat and the 12 spring piece, which would cause excessive current and break down the 12 spring piece.

[0035] Preferably, the bottom of the base is provided with a plurality of I1 connection holes, through which the base is installed and connected.

[0036] This utility model comprises a base, 12 spring contacts, 2 protective covers, and 9 contact seats. A mounting groove (3) is provided on the base, with a first step (4) and a second step (5) in each groove. Four spring contacts (12) are mounted on the first and second steps (4 and 5) within the two mounting grooves. This allows the base and spring contacts to be directly connected to two sets of wire circuits for switching, eliminating the need for a traditional contact switch that connects to a single wire and then to two separate wire circuits. This simplifies wiring and provides better overall protection. When connecting the two sets of wire circuits, the 9 contact seats and the four spring contacts (12) make simultaneous contact, enabling rapid connection between the two circuits.

[0037] (1) Dual-loop integrated control: Through two 3 mounting slots arranged side by side on the base and the layered step structure, four sets of 12 springs are arranged in layers, so that a single switch can synchronously control two independent circuits. Compared with the traditional dual-switch scheme, the installation space is reduced by 50%, and the multi-switch linkage error is avoided, thus improving the control accuracy.

[0038] (2) Modular wiring design: 8 wire insertion holes correspond one-to-one with 12 spring clip fixing ends, realizing "one hole, one line" direct connection, eliminating redundant connections of jumper wires in traditional switches, and reducing contact resistance and failure rate. The mating structure of 14 pressure plate and 13 bolts ensures that the wires are firmly crimped and prevents loosening.

[0039] (3) Three-dimensional protection system: The 2 shields are connected to the 1 base 7 slot by elastic plates to form a fully enclosed protective cavity, achieving an IP54 protection level. The 10 slot and the U-shaped end of the 9 contact seat adopt a labyrinth-type matching structure, which can guide the 9 contact seat to be inserted accurately and prevent foreign objects from entering, taking into account both ease of operation and environmental adaptability.

[0040] (4) Enhanced synchronous conduction: The U-shaped contact end of the 9-contact base adopts a layered conductive layer design, which synchronously presses four sets of 12 spring contacts at the moment of insertion, with a conduction time difference of less than 0.1ms, ensuring synchronous transmission of current in the dual circuit. The hemispherical metal contact at the end of the 12 spring contacts and the surface contact mode of the contact layer reduce arc loss by 80% compared with the traditional point contact method.

[0041] (5) Quick maintenance features: The plug-in connection between the flexible card plate and the 7 card slots allows for manual disassembly and assembly of the 2 protective covers, enabling the inspection or replacement of the 12 spring clips without tools. The standardized 11 connection holes at the bottom of the base support both rail mounting and wall mounting modes to adapt to different scenario requirements.

[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 double-layer contact switch, comprising a base, a spring, a protective cover, and a contact seat, characterized in that: The base has two mounting slots arranged side by side, each with a first step and a second step. The first and second steps are staggered vertically. Four spring pieces are provided, each located on the first and second steps of the two mounting slots, with one end of each spring piece fixed by a fixing bolt. The base has wire insertion holes at one end of each of the first and second steps of the two mounting slots. The protective cover is installed on the base and covers the mounting slots and spring pieces. The contact seat can extend into the protective cover and simultaneously contact and connect with the four spring pieces.

2. A double-layer contact switch according to claim 1, characterized in that: Both the first and second steps are provided with mounting holes, and the mounting holes are provided with internal threads. The spring piece is provided with a through hole, and the fixing bolt passes through the through hole and extends into the mounting hole for threaded connection.

3. A double-layer contact switch according to claim 2, characterized in that: A pressure plate is provided between the fixing bolt and the spring.

4. A double-layer contact switch according to claim 1, characterized in that: The base has several slots on both sides, and the bottom of the cover has several elastic plates on both sides. The elastic plates are inserted into the slots for snap-fit ​​connection.

5. A double-layer contact switch according to claim 4, characterized in that: The protective cover has two slots arranged side by side, which are directly opposite the two mounting slots on the base.

6. A double-layer contact switch according to claim 1, characterized in that: The contact end of the contact seat is U-shaped, and the U-shaped contact end includes an upper contact layer and a lower contact layer. The upper contact layer can contact and communicate with two spring pieces installed on the first step of the two mounting slots, respectively, and the lower contact layer can contact and communicate with two spring pieces installed on the second step of the two mounting slots, respectively.

7. A double-layer contact switch according to claim 1, characterized in that: The base has several connection holes at its bottom.

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