Self-resetting fastening wiring type auxiliary contact group

Abstract

The invention discloses a self-resetting fastening wiring type auxiliary contact group which comprises a shell, a contactor connecting unit is arranged at the bottom of the shell, an inner cavity of the shell is equally divided into a plurality of connecting chambers through interphase walls, and a moving contact support unit and a static contact unit which are in one-to-one correspondence are arranged in an inner cavity of each connecting chamber from top to bottom; the moving contact support unit comprises a self-resetting fastener, positioning walls are arranged on the two sides of the self-resetting fastener, and hanging lugs are arranged on the outer sides of the positioning walls. A positioning groove is formed in an inner cavity of the connecting chamber, the hanging lug can slide up and down along the positioning groove, a counter-force spring is arranged in the positioning groove, one end of the counter-force spring is connected with the positioning groove, and the other end of the counter-force spring is connected with the hanging lug. A certain distance is always kept between the fastening piece of the self-resetting fastening piece and the static contact unit through the counter-force spring, when wiring is needed, a wire end only needs to be directly placed below the fastening piece, then the fastening piece is fastened, the purpose of direct wiring can be achieved, and diversified wiring requirements of customers can be met.

Description

Technical Field

[0001] The invention relates to the field of auxiliary contacts, and in particular to a self-resetting fastening wiring type auxiliary contact group. Background Art

[0002] Auxiliary contacts are an important electrical component, widely used in industrial automation, power transmission, rail transportation, communication equipment and other fields. In low-voltage electrical appliances, contactors are used for remote connection and disconnection, and the self-locking and interlocking of contactors are achieved through the auxiliary contact groups set on the contactors.

[0003] The existing auxiliary contact group fasteners are generally tile pad combination screws. When wiring, you need to remove the tile pad combination screws first, insert the terminal, and then tighten the tile pad combination screws to complete the wiring. It can only connect U-shaped terminal blocks or pin-type terminal blocks. The wiring method is single and cannot meet the diversified wiring needs of customers. If you want to connect to O-type terminal blocks, you need to completely separate the tile pad combination screws from the electrical components first, and the terminal shield needs to be removed during the complete separation process. This results in the absence of the terminal shield to limit the wiring, resulting in the problem of the screw tilting and sliding buckle or horizontal tile pad, which increases the difficulty of wiring. After the wiring is completed, the terminal shield needs to be installed again. The operation is complicated and the work intensity is high. After the wiring, the terminal shield is prone to not being installed in place. Summary of the invention

[0004] The present invention provides a self-resetting fastening wiring type auxiliary contact group, the purpose of which is to use a self-resetting fastener for direct wiring, so as to achieve the purpose of completing the fastening wiring without loosening the fastener during wiring, and diversifying the wiring requirements.

[0005] To achieve its purpose, the present invention adopts the following technical solution: A self-resetting fastening wiring type auxiliary contact group, comprising a housing, a contactor connection unit is arranged at the bottom of the housing, the inner cavity of the housing is equally divided into a plurality of connection chambers by phase-interval walls, and the inner cavity of each connection chamber is provided with a corresponding moving contact bracket unit and a static contact unit from top to bottom; The moving contact bracket unit includes a self-resetting fastener, which includes a pad, the top of the pad is screwed with the fastener, and the bottom end of the fastener passes through the pad and extends to the top of the static contact unit; a wire groove is provided at the bottom of the pad, positioning walls are provided on both sides, and a hanging ear is provided on the outside of the positioning wall; vertical positioning grooves are provided on both sides of the inner wall of the shell and the phase wall of the inner cavity of the connecting chamber, the hanging ear is embedded in the positioning groove and can slide up and down along the positioning groove, and a reaction spring is provided in the positioning groove, one end of the reaction spring is connected to the positioning groove, and the other end is connected to the hanging ear.

[0006] Furthermore, a protective cover unit is provided outside the shell, and the protective cover unit includes a top protective cover and a side protective cover.

[0007] Furthermore, the positioning grooves on both sides of the same phase wall are staggered.

[0008] Furthermore, the hanging ears of each of the moving contact bracket units are staggered, and the hanging ears and the positioning grooves in the same connecting chamber are matched.

[0009] Furthermore, the hanging ear and the positioning groove are both in an arc shape.

[0010] Furthermore, the fastener is a spherical 11-head screw.

[0011] Furthermore, a gasket is provided at the connection between the fastener and the backing plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The self-resetting fastening wiring type auxiliary contact group provided by the present invention uses a reaction spring to keep a certain distance between the fastener of the self-resetting fastener and the static contact unit. When wiring is required, it is only necessary to put the wire end directly under the fastener and then tighten the fastener to achieve the purpose of direct wiring. The wiring operation can be completed without loosening the nails. It can be connected to O-type wiring terminals, U-type wiring terminals or pin-type wiring terminals. It has a wide range of applications and can meet the diversified wiring needs of customers.

[0013] 2. The positioning wall of the self-resetting fastener inside the auxiliary contact group cooperates with the phase wall of the housing, and the protective cover unit cooperates with the positioning groove to prevent the self-resetting fastener from tilting and misaligning, playing the role of guiding, limiting travel and protection. In addition, when the wire trough is connected with the static contact unit, it can make the wire access more secure and improve the conduction reliability.

[0014] 3. The self-resetting fastening wiring type auxiliary contact group provided by the present invention has staggered positioning grooves on both sides of the same phase wall, and the hanging ears in the same connection chamber are adapted to the positioning grooves. On the one hand, it can prevent the positioning grooves on both sides from penetrating the phase wall, and on the other hand, it can also make the auxiliary contact group as a whole light and practical, with ingenious structural design. When wiring, there is no need to loosen fasteners to complete the fastening wiring work, which reduces the wiring difficulty and work intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the internal structure of the self-resetting fastening wiring type auxiliary contact group of the present invention; Figure 2 It is a schematic diagram of the external structure of the self-resetting fastening wiring type auxiliary contact group of the present invention; Figure 3 It is a schematic diagram of the structure of the self-resetting fastener of the present invention; In the figure: 1-self-resetting fastener; 11-fastener; 12-gasket; 13-gasket; 131-positioning wall; 132-hanging ear; 133-wire slot; 2-reaction spring; 3-housing; 31-positioning groove; 32-phase wall; 33-connecting chamber; 4-protective cover unit; 41-top protective cover; 42-side protective cover; 5-static contact unit; 6-moving contact bracket unit; 7-contactor connection unit. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings: like Figure 1-3 As shown, the present invention is a self-resetting fastening wiring type auxiliary contact group, including a housing 3, a contactor connection unit 7 is provided at the bottom of the housing 3, and a protective cover unit 4 is provided outside the housing 3. The protective cover unit 4 includes a top protective cover 41 and two side protective covers 42; The inner cavity of the housing 3 is equally divided into four connecting chambers 33 by the phase-interval wall 32, and each connecting chamber 33 is provided with a corresponding moving contact bracket unit 6 and a stationary contact unit 5 from top to bottom; the moving contact bracket unit 6 includes a self-resetting fastener 1, and the self-resetting fastener 1 includes a pad 13, the top of the pad 13 is screwed with a fastener 11, the fastener 11 is a spherical eleven-head screw, and a gasket 12 is provided at the connection between the fastener 11 and the pad 13, and the bottom end of the fastener 11 passes through the pad 13 and extends to the top of the stationary contact unit 5; the bottom of the pad 13 is provided with a wire groove 133, and the two sides are provided with There is a positioning wall 131, and an arc-shaped ear 132 is staggered on the outer side of the positioning wall 131; the inner wall of the shell 3 of the inner cavity of the connecting chamber 33 and both sides of the phase wall 32 are provided with vertical arc-shaped positioning grooves 31, the positioning grooves 31 on both sides of the same phase wall 32 are staggered, and the ear 132 in the same connecting chamber 33 is adapted to the positioning groove 31, the ear 132 is embedded in the positioning groove 31 and can slide up and down along the positioning groove 31, and a reaction spring 2 is provided in the positioning groove 31, one end of the reaction spring 2 is connected to the positioning groove 31, and the other end is connected to the ear 132.

[0017] After the self-resetting fastening wiring type auxiliary contact group of the present application is assembled, the fastener 11 is suspended in the connection chamber 33 of the housing 3. The reaction spring 2 keeps the fastener 11 of the self-resetting fastener 1 and the static contact unit 5 at a certain distance. When wiring is required, the wire end only needs to be directly placed under the fastener 11, and then the fastener 11 is fastened from the top of the housing 3 by a tool to achieve the purpose of direct wiring. The wiring operation can be completed without loosening the nails. It can be connected to O-type terminals, U-type terminals or pin terminals. The wire method is diversified and can meet the diversified wiring needs of customers. During the wiring process, the positioning wall 131 cooperates with the phase wall 32, and the protective cover unit 4 cooperates with the positioning groove 31 to prevent the self-resetting fastener 1 from tilting and misaligning, and play the role of guiding, limiting travel and protection; when the wire groove 133 cooperates with the static contact unit 5 for wiring, it can make the wire access more secure and improve the conduction reliability; finally, the contactor connection unit 7 is connected to the corresponding contactor to realize the function of the self-resetting fastening wiring type auxiliary contact group.

Claims

1. A self-resetting fastening wiring type auxiliary contact group, comprising a housing (3), wherein a contactor connection unit (7) is provided at the bottom of the housing (3), characterized in that: The inner cavity of the housing (3) is equally divided into a plurality of connection chambers (33) by phase-separated walls (32), and each connection chamber (33) is provided with a corresponding moving contact bracket unit (6) and a stationary contact unit (5) from top to bottom. The movable contact bracket unit (6) comprises a self-resetting fastener (1), the self-resetting fastener (1) comprises a pad (13), the top of the pad (13) is screwed with the fastener (11), and the bottom end of the fastener (11) passes through the pad (13) and extends to the top of the stationary contact unit (5); a wire groove (133) is provided at the bottom of the pad (13), positioning walls (131) are provided on both sides, and a hanging ear (132) is provided on the outside of the positioning wall (131); the inner wall of the shell (3) and the interphase wall (32) of the inner cavity of the connecting chamber (33) are both provided with a vertical positioning groove (31), the hanging ear (132) is embedded in the positioning groove (31) and can slide up and down along the positioning groove (31), and a reaction spring (2) is provided in the positioning groove (31), one end of the reaction spring (2) is connected to the positioning groove (31), and the other end is connected to the hanging ear (132).

2. A self-resetting fastening wiring type auxiliary contact group as claimed in claim 1, characterized in that: A protective cover unit (4) is provided outside the housing (3), and the protective cover unit (4) comprises a top protective cover (41) and a side protective cover (42).

3. A self-resetting fastening wiring type auxiliary contact group as claimed in claim 2, characterized in that: The positioning grooves (31) on both sides of the same interphase wall (32) are arranged in a staggered manner.

4. A self-resetting fastening wiring type auxiliary contact group as claimed in claim 3, characterized in that: The hanging ears (132) of each movable contact bracket unit (6) are staggered, and the hanging ears (132) and the positioning grooves (31) in the same connection chamber (33) are matched.

5. A self-resetting fastening wiring type auxiliary contact group as claimed in claim 4, characterized in that: The hanging ear (132) and the positioning groove (31) are both in an arc shape.

6. A self-resetting fastening wiring type auxiliary contact group as claimed in claim 5, characterized in that: The fastener (11) is a spherical eleven-headed screw.

7. A self-resetting fastening wiring type auxiliary contact group according to any one of claims 1 to 6, characterized in that: A gasket (12) is provided at the connection between the fastener (11) and the backing plate (13).

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