Dual loop switching chip

Abstract

The utility model relates to the field of switching piece that can simultaneously connect or disconnect two circuits, disclose a double circuit switching piece, it includes two pairs of electric conductors installed on the same base, two bridge pieces installed on the same handle, the base is the insulating part of integrated molding, it includes base matrix, support and intermediate insulating sleeve, the intermediate insulating sleeve is connected with base matrix through the support, one pair of electric conductors is inserted between the intermediate insulating sleeve and base matrix and is limited by the support, one end surface of the electric conductor contacts the first bridge piece and the other end surface serves as the first wiring point, the first bridge piece is installed on the intermediate insulating sleeve, another pair of electric conductors is installed in the intermediate insulating sleeve and cannot rotate, the second bridge piece is installed on the second electric conductor, and the second electric conductor is provided with the second wiring point that is insulated and isolated from the first wiring point. The improved base structure simplifies the manufacture and assembly of the whole switching piece.

Description

Technical Field

[0001] This utility model relates to the field of electrical connectors, and in particular to a switching piece that can simultaneously connect or disconnect two circuits. Background Technology

[0002] Currently, switching plates for switching between two parallel circuits are available for electrical wiring and operation. Examples include "An Intelligent Switching Plate for an Installation Screen" (CN207719533U) and "A Multi-Circuit Switching Device for an Installation Screen" (CN208909869U). The switching plate or device includes a pair of first conductors and a pair of second conductors. Each of the first and second conductors has a connection point, and these connection points are insulated from each other. The first conductors are electrically connected to each other via a first bridging plate, and the second conductors are electrically connected to each other via a second bridging plate. The second conductor is a rod-shaped member with external threaded sections at both ends, which are threaded to a knob. The first and second conductors are insulated from each other and mounted on the same base. The first and second bridging plates are mounted on the same handle. One end of each bridging plate has a hole through which it is fitted onto the outside of one side of the second conductor. The other end of each bridging plate has an opening slot, which allows it to electrically connect to the corresponding conductor on the other side by rotating the handle. When the knob sleeve is tightened, each of the two bridging plates connects to one pair of conductors. When the knob sleeve is loosened, the handle is rotated in the opposite direction, causing the slot to disengage from the corresponding conductor on the other side. This allows the switching plate or switching device to simultaneously make or break contact between the two pairs of wiring points. The base is also used to fix the switching plate or switching device in place.

[0003] The aforementioned switching plate requires the assembly of many parts during manufacturing, especially the insulation coating of individual parts or components, resulting in relatively high manufacturing costs. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a dual-loop switching plate that is easier to manufacture and assemble.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: a dual-circuit switching plate, including a pair of first conductors and a pair of second conductors. The first conductors can be connected to each other through a first bridging plate, and the second conductors can be connected to each other through a second bridging plate. The second conductor is a rod-shaped member with external threaded sections at both ends. The first and second conductors are mounted on a base. The first and second bridging plates are mounted on the same handle. The base is an integrally formed insulating member, which includes a base body, a support member, and an intermediate insulating sleeve. The intermediate insulating sleeve is coaxially arranged with a first mounting hole located on the base body and is connected to the base body through the support member. The first conductor is inserted into the first mounting hole and is located between the intermediate insulating sleeve and the base body and is limited by the support member. One end face of the first conductor contacts the first bridging plate, and the other end face serves as a first connection point. The first bridging plate is mounted on the intermediate insulating sleeve. The second conductor is non-rotatably mounted inside the intermediate insulating sleeve. The second bridging plate is mounted on the second conductor. The second conductor is provided with a second connection point that is insulated and isolated from the first connection point. The improved base structure utilizes an intermediate insulating sleeve to achieve insulation between the first and second conductors, eliminating the need for an adhesive wrapping insulation process and simplifying the manufacturing and assembly process of the switching piece.

[0006] Both ends of the second conductor are provided with slots, and the distance between the two slots is adapted to the axial length of the intermediate insulating sleeve. A retaining spring is installed in the slot, and the outer diameter of the retaining spring is larger than the inner diameter of the intermediate insulating sleeve. The position of the second conductor and the base is fixed by the cooperation of the retaining spring and the slot, which facilitates assembly.

[0007] An insulating ceramic sleeve is provided between the second wiring point and the first wiring point of the second conductor. The first conductive end is provided between the first wiring point and the insulating ceramic sleeve, so as to realize the insulation arrangement between the wiring points by using the insulating ceramic sleeve, and to facilitate the disassembly and assembly of the first conductive end.

[0008] A second conductive end is provided between the insulating ceramic sleeve and the second wiring point, and is fixed by a nut that matches the second conductor, thereby facilitating the disassembly and fixing of the second conductive end.

[0009] A large spherical washer, fixed by a knob nut, is provided between the first bridging piece and the first conductor, and a small spherical washer is provided between the second bridging piece and the knob nut. The elasticity of the spherical washer ensures a reliable conductive connection between the bridging piece and the conductor in the closed state. The arc transition surface of the spherical washer improves the freedom and smoothness during closing and switching, and enhances the safety and reliability of the closed state.

[0010] The handle includes a handle base and a handle cover that are interlocked. The handle base has two spaced-apart bridging plate slots, in which the first and second bridging plates are respectively snapped into. The handle cover has an anti-reverse step that matches the anti-reverse protrusion on the handle base. The handle is formed by two component parts: the handle base and the handle cover. The first and second bridging plates are arranged insulatedly through the bridging plate slots, which facilitates assembly and achieves insulation at the same time.

[0011] Both the first and second bridging pieces are provided with side grooves that are adapted to the bridging piece slots. The two ends of the side grooves protrude to prevent the bridging pieces from moving left and right, ensuring that the bridging pieces can still perform their functions after repeated opening and closing operations.

[0012] One end of the handle base protrudes from the handle cover to form a toggle switch. By moving the toggle switch, the switching plate can be closed or opened.

[0013] The beneficial effects of this utility model are: the improved base structure simplifies the manufacturing and assembly of the entire switching plate. Attached Figure Description

[0014] Figure 1 This is the front view (closed state) of the dual-circuit switching plate of this utility model.

[0015] Figure 2 yes Figure 1 AA sectional view.

[0016] Figure 3 This is an isometric view (open state) of the dual-circuit switching plate of this utility model.

[0017] Figure 4 This is a schematic diagram of the dual-circuit switching piece of this utility model forming two parallel circuits with two sets of conductive terminals.

[0018] Figure 5 yes Figure 2 Front view of the base.

[0019] Figure 6 yes Figure 2 BB section view of the middle base.

[0020] Figure 7 yes Figure 2 Axonometric view of the central base.

[0021] Figure 8 yes Figure 2 Axonometric view of the first conductive component.

[0022] Figure 9 yes Figure 2 A schematic diagram of the first conductive component being assembled into the base.

[0023] Figure 10 yes Figure 2 Another schematic diagram (another view) showing the first conductive component assembled into the base.

[0024] Figure 11 yes Figure 2 A schematic diagram of the second conductive component being assembled into the base.

[0025] Figure 12 yes Figure 11 The completion status diagram.

[0026] Figure 13 yes Figure 11 A schematic diagram showing the second conductive component having a slot and a retaining ring installed.

[0027] Figure 14 yes Figure 2 A schematic diagram of the first and second bridging pieces.

[0028] Figure 15 yes Figure 2 A schematic diagram showing the first and second bridging pieces joining the handle base.

[0029] Figure 16 This is a schematic diagram showing the combination of a handle cover and a handle base.

[0030] Figure 17 This is a schematic diagram of another type of handle cover combined with the handle base.

[0031] The markings in the diagram are as follows: 1-knob nut, 2-small spherical washer, 3-handle cover, 4-first conductor, 5-base, 6-locking nut, 7-insulating ceramic sleeve, 8-second bridging piece, 9-first bridging piece, 10-washer, 11-nut, 12-second conductor, 13-large spherical washer, 14-handle base, 15-ring clip, 16-toggle, 17-side groove, 18-U-groove, 30-connection point marking area, 31-anti-reverse step, 41-first conductive end, 45-mounting stop, 50-base base, 51-support, 52-intermediate insulating sleeve, 53-first mounting hole, 54-limiting step, 120-slot, 121-second conductive end, 140-bridging piece slot, 141-anti-reverse boss, 142-handle upper stop, 520-second mounting hole. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0033] Example: like Figures 1 to 17As shown, the dual-circuit switching plate of this utility model includes a pair of first conductors 4 and a pair of second conductors 12. The first conductors 4 are interconnected through a first bridging piece 9, and the second conductors 12 are interconnected through a second bridging piece 8. The second conductors 12 are rod-shaped pieces with external threaded sections at both ends. The first conductors 4 and the second conductors 12 are both mounted on a base 5. The first bridging piece 9 and the second bridging piece 8 are mounted on the same handle. Figures 5-7 As shown, the base 5 is an integrally formed insulating component, comprising a base body 50. The base body 50 has two first mounting holes 53 arranged side-by-side on the left and right. Inside the first mounting holes 53, an intermediate insulating sleeve 52 is coaxially arranged with the first mounting holes 53 and connected to the base body 50 integrally by the support member 51. One end face of the support member 51 serves as a limiting step 54. Figure 8 As shown, the first conductor 4 is an annular component with a strip groove. The bottom surface of the strip groove serves as a mounting stop 45, which mates with the limiting step 54. Figure 9 As shown, the first conductor 4 is inserted into the first mounting hole 53 and located between the intermediate insulating sleeve 52 and the base body 50. The first conductor 4 is limited by the support member 51, and the annular end face of the first conductor 4 can contact the first bridging piece 9. Figure 10 As shown, the other end face of the first conductor 4 is four fan-shaped surfaces that protrude beyond the end face of the intermediate insulating sleeve 52, serving as the first connection point for contacting the metal part of the conductive end.

[0034] like Figure 2 As shown, the first bridging piece 9 is mounted on the intermediate insulating sleeve 52; as Figure 5 and Figure 11 , Figure 12 As shown, the center of the intermediate insulating sleeve 52 is the second mounting hole 520, which is a hole with a regular hexagonal cross-section. The second conductor 12 is a rod-shaped conductive element with a regular hexagonal cross-section, thus the second conductor 12 is non-rotatably mounted inside the intermediate insulating sleeve 52. Figure 2 As shown, the second bridging piece 8 is mounted on the second conductor 12, and the second conductor 12 is provided with a second connection point that is insulated and isolated from the first connection point.

[0035] like Figure 2 and Figures 11-13As shown, the second conductor 12 has external threaded sections at both ends. Near the inner end of each external threaded section, there is a slot 120 for mounting the retaining spring 15. The distance between the two slots 120 is adapted to the axial length of the intermediate insulating sleeve 52. The second conductor 12 is clearance-fitted with the second mounting hole 520. The outer diameter of the retaining spring 15 is larger than the inner diameter of the intermediate insulating sleeve 52, so that the second conductor 12 is fixed in the second mounting hole 520 without rotation.

[0036] like Figure 2 , Figure 3 and Figure 4 As shown, the base 5 is roughly H-shaped, with external threaded sections on its two side branches, which cooperate with the locking nut 6 to fix the base 5 to the mounting plate with matching mounting holes. A section of the intermediate insulating sleeve 52 on the base 5 extends beyond the external threaded section, and a section of the second conductor 12 extends beyond the intermediate insulating sleeve 52. An insulating ceramic sleeve 7 is fitted on the intermediate insulating sleeve 52. One end of the insulating ceramic sleeve 7 is the first connection point, where a gasket 10 can be added as needed. The other end of the insulating ceramic sleeve 7 is the second connection point that can be electrically connected to the second conductor 12. This position can be equipped with a gasket 10 and elastic gaskets, which are conventional gaskets used for locking the terminal block position. The first conductive end 41 for external circuit is located between the first connection point and the insulating ceramic sleeve 7, and the second conductive end 121 for external circuit is located between the insulating ceramic sleeve 7 and the second connection point. Both types of conductive ends are fixed by nuts 11 that match the second conductor 12. In this way, the conductive end can be detachably connected to the switching plate and reliably electrically connected to the first conductor and the second conductor.

[0037] refer to Figure 3 and Figure 4 The first conductive terminal 41 has two parts, located at connection points 1 and 3 respectively; the second conductive terminal 121 also has two parts, located at connection points 2 and 4 respectively. Circuit 1: "Connection point 1 - Second conductor - Second bridge plate - Connection point 2", Circuit 2: "Connection point 3 - First conductor - First bridge plate - Connection point 4". like Figure 2 As shown, a large spherical washer 13, which is fixed by a knob nut 1, is provided between the first bridging piece 9 and the first conductor 4. A small spherical washer 2 is provided between the second bridging piece 8 and the knob nut 1. The washers are used for local axial dimension compensation. While ensuring the function of the bridging piece, the control accuracy requirements of the axial dimension are reduced, the manufacturing difficulty is reduced, and the manufacturing cost is saved.

[0038] like Figures 14-17As shown, the handle includes a handle base 14 and a handle cover 3 that are interlocked. The handle base 14 has two spaced-apart bridging tab slots 140. During assembly, the first bridging tab 9 and the second bridging tab 8 are first snapped into the bridging tab slots 140, and then the component is inserted into the handle cover 3, causing the dial 16 to protrude from the handle cover 3. The handle cover 3 has an anti-reverse step 31 that matches the anti-reverse protrusion 141 on the handle base 14, thus fixing the handle cover 3 to the handle base 14. The handle cover 3 can be as follows: Figure 16 The fully enclosed protective shield shown can also be as follows: Figure 17 The choice of which type of semi-enclosed cover to use depends on the application requirements.

[0039] like Figure 4 , Figure 16 , 17 As shown, a wiring point marking area 30 can be set on the handle cover 3, and the two pairs of wiring points are marked with Arabic numerals "1, 3" and "2, 4" to facilitate wiring.

[0040] like Figure 14 and Figure 15 As shown, both the first bridging piece 9 and the second bridging piece 8 are provided with side grooves 17 that are adapted to the bridging piece slot 140. The two ends of the side grooves 17 protrude to restrict the position of the bridging pieces and prevent them from moving left and right. This ensures that the bridging pieces can still perform their functions after repeated opening and closing operations.

[0041] like Figure 3 As shown, one end of the handle base 14 protrudes from the handle cover 3 to form a toggle switch 16, so that the closed or open state of the switching plate can be switched by moving the position of the toggle switch 16.

[0042] In the above structure, the base 5 can be integrally injection molded, eliminating the need for encapsulation injection molding during the assembly of the switching plate to achieve insulation. Therefore, it is convenient to manufacture and assemble, and can reduce the processing cost of the switching plate.

Claims

1. A dual-circuit switching plate, comprising a pair of first conductors (4) and a pair of second conductors (12), wherein the first conductors (4) are interconnected by a first bridging piece (9), and the second conductors (12) are interconnected by a second bridging piece (8), wherein the second conductors (12) are rod-shaped members with external thread sections at both ends, the first conductors (4) and the second conductors (12) are both mounted on a base (5), and the first bridging piece (9) and the second bridging piece (8) are mounted on the same handle, characterized in that: The base (5) is an integrally formed insulating component, which includes a base body (50), a support (51) and an intermediate insulating sleeve (52). The intermediate insulating sleeve (52) is coaxially arranged with the first mounting hole (53) on the base body (50) and connected to the base body (50) through the support (51). The first conductor (4) is inserted into the first mounting hole (53) and located between the intermediate insulating sleeve (52) and the base body (50) and is limited by the support (51). One end face of the first conductor (4) contacts the first bridging piece (9) and the other end face serves as the first connection point. The first bridging piece (9) is installed on the intermediate insulating sleeve (52). The second conductor (12) is non-rotatably installed in the intermediate insulating sleeve (52). The second bridging piece (8) is installed on the second conductor (12). A second connection point is provided on the second conductor (12) that is insulated and isolated from the first connection point.

2. The dual-loop switching plate as described in claim 1, characterized in that: The second conductor (12) has slots (120) at both ends. The distance between the two slots (120) is adapted to the axial length of the intermediate insulating sleeve (52). A retaining spring (15) is installed in the slot (120). The outer diameter of the retaining spring (15) is larger than the inner diameter of the intermediate insulating sleeve (52).

3. The dual-loop switching plate as described in claim 1 or 2, characterized in that: An insulating ceramic sleeve (7) is provided between the second wiring point and the first wiring point of the second conductor (12), and the first conductive end (41) is provided between the first wiring point and the insulating ceramic sleeve (7).

4. The dual-loop switching plate as described in claim 3, characterized in that: A second conductive end (121) is provided between the insulating ceramic sleeve (7) and the second wiring point, and is fixed by a nut (11) that matches the second conductor (12).

5. The dual-loop switching plate as described in claim 1 or 2, characterized in that: A large spherical washer (13) fixed by a knob nut (1) is provided between the first bridging piece (9) and the first conductor (4), and a small spherical washer (2) is provided between the second bridging piece (8) and the knob nut (1).

6. The dual-loop switching plate as described in claim 1 or 2, characterized in that: The handle includes a handle base (14) and a handle cover (3) that are plugged into each other. The handle base (14) is provided with two bridging plate slots (140) arranged at intervals. The first bridging plate (9) and the second bridging plate (8) are respectively snapped into the bridging plate slots (140). The handle cover (3) is provided with a backstop step (31) that matches the backstop protrusion (141) on the handle base (14).

7. The dual-loop switching plate as described in claim 6, characterized in that: Both the first bridging piece (9) and the second bridging piece (8) are provided with side grooves (17) that are adapted to the bridging piece slot (140).

8. The dual-loop switching plate as described in claim 6, characterized in that: One end of the handle base (14) protrudes from the handle cover (3) to form a knob (16).

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