Contact assembly and double-break switch

Abstract

The contact assembly comprises a wire inlet contact, a moving contact and a wire outlet contact, the moving contact and the wire outlet contact are kept in contact and communication, the moving contact can swing under the action of external force to be connected or disconnected with the wire inlet contact, one end of the wire inlet contact is provided with a first power connection contact, and the other end of the wire inlet contact is provided with a second power connection contact. The other end of the wire inlet contact is provided with a first power connection part, and the first power connection part is U-shaped; a V-shaped contact bulge is formed at one end of the outgoing line contact, and a second power connection part is arranged at the other end of the outgoing line contact and is U-shaped; the middle part of the moving contact is in contact with the contact bulge, the two sides of the middle part of the moving contact are respectively provided with a convex limiting part, the two ends of the moving contact are respectively bent towards one side opposite to the outgoing line contact, and one end of the moving contact is provided with a second power connection contact corresponding to the first power connection contact.

Description

Technical Field

[0001] The utility model relates to the technical field of switches, in particular to a contact assembly and a double-break switch. Background Art

[0002] With the popularization of various electrical equipment, the reliability and safety of electrical equipment control are becoming more and more important. As a major part of various control devices, switches are becoming more and more numerous with the evolution of electrical equipment. Various switches are emerging with more and more functions. However, the fundamental one is reliability and safety.

[0003] In the prior art, a patent with a patent authorization announcement number of CN 217134220 U discloses a double-break switch for a marine cabin, which can be used as a prior art that is relatively close to the present application for reference.

[0004] An important embodiment of the stability and reliability of the double-break switch is the design of the contact assembly (copper parts) that connects to the power supply, and how to design the structure of the contact assembly is an issue that needs to be considered. Utility Model Content

[0005] In view of the problems pointed out in the background technology, the utility model proposes a contact assembly and a double-break switch to solve the above technical problems and provide a contact assembly which is different from the prior art, has a reasonable structural design, and has a stable and reliable connection.

[0006] The technical solution of the utility model is achieved in this way:

[0007] A contact assembly includes an incoming contact, a moving contact, and an outgoing contact. The moving contact is in contact with the outgoing contact, and the moving contact can swing under the action of an external force to connect or disconnect with the incoming contact.

[0008] One end of the incoming line contact is provided with a first power contact point, and the other end of the incoming line contact is provided with a first power connection portion, and the first power connection portion is U-shaped;

[0009] One end of the outgoing contact forms a V-shaped contact protrusion, and the other end of the outgoing contact is provided with a second power connection portion, and the second power connection portion is U-shaped;

[0010] The middle part of the moving contact contacts the contact protrusion, and protruding limit parts are respectively provided on both sides of the middle part of the moving contact. The two ends of the moving contact are respectively bent toward the side facing away from the outgoing line contact, and one end of the moving contact is provided with a second power contact corresponding to the first power contact.

[0011] The utility model is further configured to include an annular wire locking buckle, a connecting hole is provided on the side wall of the wire locking buckle, a wire locking buckle is connected to the first power connection part and the second power connection part respectively, and the first power connection part and the second power connection part are located on the inner side of the wire locking buckle and are opened toward the connecting hole.

[0012] The utility model is further configured such that the first power connection part is vertically arranged with the incoming contact, and the second power connection part is vertically arranged with the outgoing contact.

[0013] A double-break switch comprises two groups of the above-mentioned contact assemblies.

[0014] The utility model is further configured to include a base and a buckle cover, the buckle cover is connected to the opening side of the base, the contact assembly is arranged in the base, the base is provided with installation grooves for installing incoming line contacts, outgoing line contacts, moving contacts, and locking wire buckles, and the buckle cover is provided with limiting parts that extend toward the incoming line contacts, outgoing line contacts, moving contacts, and locking wire buckles respectively and limit the incoming line contacts, outgoing line contacts, moving contacts, and locking wire buckles.

[0015] The utility model is further configured as follows: the buckle cover is connected with a tiltable seesaw, the seesaw is provided with two toggle rods corresponding to the moving contacts, the buckle cover is provided with holes for the toggle rods to extend into, the toggle rods are connected with a spring and a pressing column, and the toggle rods toggle the moving contact through the pressing column.

[0016] The utility model is further configured that an indicator light is provided on the buckle cover, and the indicator light is electrically connected to the two incoming line contacts.

[0017] The utility model is further configured that a grounding component is provided in the base.

[0018] The utility model is further configured that the incoming contact is arranged along the width direction of the base, and the moving contact and the outgoing contact are arranged along the length direction of the base.

[0019] The utility model is further configured that the buckle cover is provided with an inserting column, the base is provided with a corresponding inserting groove, the inserting column is inserted in the inserting groove, and the end of the inserting column is provided with an anti-dropping hook.

[0020] By adopting the above technical solution, the beneficial effects of the utility model are as follows:

[0021] (1) The U-shaped electrical connection parts on the incoming and outgoing contacts are connected to the inner side of the annular wire lock buckle, and the electrical connection parts and the wire lock buckle can form a large contact area. The electrical connection parts embrace the incoming wires, and the electrical connection parts can form a large contact area with the wires, thus forming a good and stable electrical connection state.

[0022] (2) A V-shaped contact protrusion is formed on the outgoing contact, and the contact protrusion can form a stable electrical contact with the moving contact.

[0023] (3) The incoming contact is arranged along the width direction of the base, and the moving contact and the outgoing contact are arranged along the length direction of the base, so that the length of the base can be reduced and the volume of the base can be reduced.

[0024] (4) The base and the buckle cover are plugged into each other and do not require screws for fastening. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 This is an exploded schematic diagram of the switch of the utility model.

[0027] Figure 2 It is a schematic diagram of the structure of the buckle cover and the base of the utility model.

[0028] Figure 3 It is a schematic diagram of the structure inside the base of the utility model.

[0029] Figure 4 The structure of the contact assembly of the utility model is shown in FIG. Figure 1 .

[0030] Figure 5 The structure of the contact assembly of the utility model is shown in FIG. Figure 2 .

[0031] Figure 6 The schematic diagram of the disassembly of the contact assembly of the utility model is shown in FIG. Figure 1 .

[0032] Figure 7 It is a structural schematic diagram of the incoming line contact of the utility model.

[0033] Figure 8 It is a structural schematic diagram of the outlet contact of the utility model.

[0034] Fig. 9 The schematic diagram of the disassembly of the contact assembly of the utility model is shown in FIG. Figure 2 .

[0035] Fig.10 It is a side view of the utility model.

[0036] Fig.11 For this utility model Fig.10 Middle AA section view.

[0037] Fig.12 For this utility model Fig.11 Middle BB section view.

[0038] Fig.13 The schematic diagram of the switch of the utility model is shown in FIG. Figure 2 .

[0039] Fig.14 The structure inside the base of the utility model is shown in FIG. Figure 2 . DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] For reference Figure 1-14 The utility model is described as follows:

[0042] Embodiment 1: A double-break switch includes a base 5 and a buckle cover 6. The base 5 is a housing structure with an opening on one side. The buckle cover 6 is connected to the opening side of the base 5. The buckle cover 6 is provided with a plug-in column 81 extending into the base 5. The base 5 is provided with a plug-in slot 82 corresponding to the plug-in column 81. The plug-in column 81 is plugged into the plug-in slot 82. The end of the plug-in column 81 is provided with an anti-drop barb 83. The anti-drop barb 83 can prevent the plug-in column 81 from escaping from the plug-in slot 82. The edge of the buckle cover 6 and the edge of the opening side of the base 5 are also connected to each other. Two sets of contact assemblies are provided in the base.

[0043] The contact assembly includes an incoming contact 1, a moving contact 2, and an outgoing contact 3. The moving contact 2 is in contact with the outgoing contact 3. The moving contact 2 can swing under the action of an external force to connect or disconnect with the incoming contact 1. A first power contact 11 is provided at one end of the incoming contact 1, and a first power connection portion 12 is provided at the other end of the incoming contact 1. The first power connection portion 12 is vertically arranged with the incoming contact 1, and the first power connection portion 12 is U-shaped. A V-shaped contact protrusion 31 is formed at one end of the outgoing contact 3, and a second power connection portion 32 is provided at the other end of the outgoing contact 3. The second power connection portion 32 is vertically arranged with the outgoing contact 3, and the second power connection portion 32 is U-shaped. The contact protrusion 31 and the second power connection portion 32 are located on the same side of the outgoing contact 3. The middle part of the moving contact 2 contacts with the contact protrusion 31, and protruding limit parts 21 are respectively provided on both sides of the middle part of the moving contact 2. The two ends of the moving contact 2 are respectively bent to the side facing away from the outgoing contact 3. One end of the moving contact 2 is provided with a second power contact 22 corresponding to the first power contact 11. The moving contact 2 and the incoming contact 1 can be electrically connected through the contact between the first power contact 11 and the second power contact 22.

[0044] It also includes an annular wire locking buckle 4, and a connecting hole 41 is provided on the side wall of the wire locking buckle 4. The connecting hole 41 is threadedly connected to the screw, and the wire enters the wire locking buckle 4. The screw is tightened to fix the entered wire. A wire locking buckle 4 is connected to the first power connection part 12 and the second power connection part 32 respectively. The first power connection part 12 and the second power connection part 32 are located on the inner side of the wire locking buckle 4 and are opened toward the connecting hole 41. The U-shaped first power connection part 12 and the second power connection part 32 are in contact with the inner wall of the wire locking buckle 4, which can form a larger contact area, which is conducive to forming a stable and good electrical connection. The wire enters the U-shaped first power connection part 12 and the second power connection part 32 to form an embrace of the wire, and then under the tightening of the screw, the wire forms a stable and good electrical connection with the U-shaped first power connection part 12 and the second power connection part 32.

[0045] The line contact 1, the moving contact 2, the outgoing line contact 3 and the wire lock buckle 4 are all made of conductive materials, such as copper.

[0046] The bottom of the base 5 is provided with a mounting groove 51 for mounting the incoming contact 1, the outgoing contact 3, the moving contact 2, and the locking buckle 4. The mounting groove 51 serves to limit the position of the incoming contact 1, the outgoing contact 3, the moving contact 2, and the locking buckle 4. The buckle cover 6 is provided with a limiting portion 61 extending toward the incoming contact 1, the outgoing contact 3, the moving contact 2, and the locking buckle 4 and limiting the incoming contact 1, the outgoing contact 3, the moving contact 2, and the locking buckle 4. The limiting portion 61 cooperates with the mounting groove 51 to position and fix the incoming contact 1, the outgoing contact 3, the moving contact 2, and the locking buckle 4.

[0047] A rocker 7 that can be tilted is connected to the buckle cover 6, and both sides of the rocker 7 are rotatably connected to the buckle cover 6. Two toggle rods 71 ​​corresponding to the moving contact 2 are provided on the rocker 7. The toggle rod 71 is vertically arranged to the rocker 7. The toggle rod 71 is hollow inside and passes through the end of the toggle rod 71. The buckle cover 6 is provided with a hole for the toggle rod 71 to extend into the base 5. A spring 72 and a pressing column 73 are connected to the toggle rod 71. The pressing column 73 is against the moving contact 2. The toggle rod 71 toggle the moving contact 2 to swing through the pressing column 73, so that the moving contact 2 is connected to the incoming contact 1 for conduction or disconnection.

[0048] An indicator light 74 is provided on the buckle cover 6, and the indicator light 74 is electrically connected to the two incoming line contacts 1. Two power connection springs are provided on the inner side surface of the buckle cover 6, and the power connection springs are abutted against the two wire locking buckles 4 connected to the incoming line contacts 1 to form an electrical connection. The indicator light 74 is connected to the two power connection springs through electric wires.

[0049] A grounding assembly 75 is disposed inside the base 5 .

[0050] The incoming contact 1 is arranged along the width direction of the base 5, and the moving contact 2 and the outgoing contact 3 are arranged along the length direction of the base 5. By adopting this technical solution, the volume of the base 5 can be reduced to a certain extent.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A contact assembly, comprising an incoming contact (1), a moving contact (2), and an outgoing contact (3), wherein the moving contact (2) and the outgoing contact (3) are in contact and connected, and the moving contact (2) can swing under the action of an external force to connect or disconnect with the incoming contact (1), characterized in that: One end of the incoming line contact (1) is provided with a first power contact point (11), and the other end of the incoming line contact (1) is provided with a first power connection portion (12), and the first power connection portion (12) is U-shaped; One end of the outgoing contact (3) forms a V-shaped contact protrusion (31), and the other end of the outgoing contact (3) is provided with a second power connection portion (32), and the second power connection portion (32) is U-shaped; The middle part of the movable contact (2) contacts the contact protrusion (31), and protruding limit portions (21) are respectively provided on both sides of the middle part of the movable contact (2). The two ends of the movable contact (2) are respectively bent toward a side facing away from the outgoing contact (3), and one end of the movable contact (2) is provided with a second power contact (22) corresponding to the first power contact (11).

2. A contact assembly according to claim 1, characterized in that: It also includes an annular locking wire buckle (4), a connecting hole (41) being provided on the side wall of the locking wire buckle (4), a locking wire buckle (4) being connected to the first power connection part (12) and the second power connection part (32) respectively, the first power connection part (12) and the second power connection part (32) being located on the inner side of the locking wire buckle (4) and opening toward the connecting hole (41).

3. A contact assembly according to claim 1, characterized in that: The first power connection part (12) is arranged vertically with the incoming contact (1), and the second power connection part (32) is arranged vertically with the outgoing contact (3).

4. A double-break switch, comprising two sets of contact assemblies, characterized in that: The contact assembly is the contact assembly according to any one of claims 1 to 3.

5. A double break switch according to claim 4, characterized in that: The invention also comprises a base (5) and a buckle cover (6), wherein the buckle cover (6) is connected to the opening side of the base (5), and the contact assembly is arranged in the base (5). The base (5) is provided with a mounting groove (51) for mounting an incoming contact (1), an outgoing contact (3), a moving contact (2), and a wire lock buckle (4), and the buckle cover (6) is provided with a limiting portion (61) which extends toward the incoming contact (1), the outgoing contact (3), the moving contact (2), and the wire lock buckle (4) respectively and limits the incoming contact (1), the outgoing contact (3), the moving contact (2), and the wire lock buckle (4).

6. A double break switch according to claim 5, characterized in that: The buckle cover (6) is connected to a tiltable seesaw (7), the seesaw (7) is provided with two toggle rods (71) corresponding to the moving contact (2), the buckle cover (6) is provided with a hole for the toggle rods (71) to extend into, the toggle rods (71) are connected to a spring (72) and a pressing column (73), and the toggle rods (71) toggle the moving contact (2) through the pressing column (73).

7. A double break switch according to claim 5, characterized in that: An indicator light (74) is provided on the buckle cover (6), and the indicator light (74) is electrically connected to the two incoming line contacts (1).

8. A double break switch according to claim 5, characterized in that: A grounding component (75) is provided inside the base (5).

9. A double break switch according to claim 5, characterized in that: The incoming contact (1) is arranged along the width direction of the base (5), and the moving contact (2) and the outgoing contact (3) are arranged along the length direction of the base (5).

10. A double break switch according to claim 5, characterized in that: The buckle cover (6) is provided with an inserting column (81), and the base (5) is provided with a corresponding inserting groove (82). The inserting column (81) is inserted into the inserting groove (82), and the end of the inserting column (81) is provided with an anti-dropping hook (83).

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