Alternating current contactor

Abstract

The utility model relates to the technical field of alternating current contactors, and discloses an alternating current contactor which comprises an alternating current contactor body, a movable limiting piece and a positioning piece, the alternating current contactor body is provided with a wiring port, and a fastening screw is screwed in the wiring port. The movable limiting piece comprises sleeve plates capable of vertically limiting the cap ends of the fastening screws and an adjusting piece, each wiring port corresponds to one sleeve plate, and all the sleeve plates in the same row can move synchronously through the adjusting piece; according to the utility model, after the fastening screw presses the wire harness, the sleeve plate is sleeved in the direction perpendicular to the fastening screw through the adjusting piece to limit the cap end of the fastening screw, so that the possibility of loosening of the fastening screw caused by vibration, external force pulling and the like is reduced, and the stability of wire harness connection is remarkably improved; and the screwing handle at the top end of the connecting rod is rotated to drive the gear to rotate, so that the rack and the connecting strip move to drive all sleeve plates in the same row to move synchronously, and the operation is simple and convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of AC contactor, especially an AC contactor. BACKGROUND

[0002] The AC contactor is an electrical switching device using electromagnetic attraction to control the on-off of the main circuit, mainly used for frequently connecting or disconnecting large current loads such as AC motor, transformer, electric heating device, etc.

[0003] In the current electrical equipment application scene, the AC contactor is widely used as a key control component, and the wiring hole is generally adopted in the form of fastening screw to press the connected wire harness, aiming to realize stable electrical connection. However, in the actual operation process, this fastening mode exposes a more prominent problem, that is, it is easy to loosen. Since the electrical equipment is often accompanied by vibration of different degrees during operation, combined with the influence of changes in environmental temperature and humidity, the fastening force of the fastening screw will gradually weaken under long-term action. Once the screw loosens, the contact between the wire harness and the wiring hole will become unstable, which not only may cause the increase of contact resistance, thereby causing local heating, and in severe cases, it may even affect the normal operation of the entire electrical system, causing equipment failure, and bringing many inconveniences and potential risks to production and life. SUMMARY

[0004] The utility model provides an AC contactor to solve the problem that the fastening screw of the existing AC contactor is easy to loosen after pressing the connected wire harness.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme: an AC contactor, comprising an AC contactor body, a wiring port is arranged on the AC contactor body, a fastening screw is screwed in the wiring port, and further comprising:

[0006] A movable limiting piece, the movable limiting piece comprises an adjusting piece and a sleeve plate capable of vertically limiting the cap end of the fastening screw, the sleeve plate is provided with a plurality of sleeve plates, one sleeve plate is corresponding to each wiring port, and all the sleeve plates in the same row can be synchronously moved through the adjusting piece;

[0007] A positioning piece is arranged on the movable limiting piece and used for limiting the position after the sleeve plate is adjusted.

[0008] Preferably, the adjusting piece comprises a connecting strip connected with all the sleeve plates, a gear rack is fixed on one side of the upper end surface of the connecting strip, a gear is engagedly connected on the gear rack, a connecting rod extending to the outside of the top end of the AC contactor body is connected on the gear, the connecting rod is connected to the shell of the AC contactor body through a bearing seat, and a hand knob is installed at the top end of the connecting rod.

[0009] Preferably, the side wall of the connecting strip is connected with a sliding strip, the inside of the AC contactor body is provided with a through slot, the side wall of the through slot is provided with a sliding groove, and the sliding strip is in sliding fit with the sliding groove.

[0010] Preferably, the positioning member comprises a positioning rod and a through slot in an annular array provided on the knob, the positioning rod can penetrate through any through slot, and the upper end surface of the AC contactor body is provided with a positioning slot matched with the end of the positioning rod.

[0011] Preferably, the bottom end of the positioning rod is fixed with a magnetic block, and the inside bottom of the positioning slot is fixed with an iron block.

[0012] Preferably, the back end of the AC contactor body is fixed with a mounting lug, and the mounting lug is provided with a mounting hole.

[0013] In the above technical solution, the technical effects and advantages of the utility model are provided:

[0014] (1) Through the setting of the movable limiting member, after the fastening screw presses the wire harness, the sleeve plate is sleeved in the direction perpendicular to the fastening screw and limits the cap end of the fastening screw through the adjusting member, the possibility of loosening of the fastening screw caused by vibration, external force pulling and the like is reduced, and the stability of the wire harness connection is significantly improved; and the knob at the top end of the rotating connecting rod can drive the gear to rotate, the rack and the connecting strip are moved, and then all the sleeve plates in the same row are synchronously moved, and the operation is simple.

[0015] (2) Through the setting of the positioning member, after the sleeve plate is positioned, the positioning rod is inserted to lock the knob, and the adsorption force of the magnetic block and the iron block is combined to prevent the gear from accidentally rotating, and double insurance is further used to eliminate the loosening risk. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creating labor.

[0017] Figure 1 It is a structural schematic view of the utility model;

[0018] Figure 2 It is one of sectional structure schematic views of the utility model;

[0019] Figure 3 It is the second sectional structure schematic view of the utility model;

[0020] Figure 4 It is a structural schematic view of the movable limiting member and the positioning member of the utility model;

[0021] In the diagram: 1. AC contactor body; 2. Wiring port; 3. Through slot; 4. Mounting lug;

[0022] 5. Movable limit component; 51. Connecting strip; 52. Sleeve plate; 53. Rack; 54. Gear; 55. Connecting rod; 56. Tightener; 57. Slide bar;

[0023] 6. Positioning component; 61. Positioning rod; 62. Through slot; 63. Magnetic block;

[0024] 7. Slide groove. Detailed Implementation

[0025] 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.

[0026] like Figures 1-4 As shown, an AC contactor includes an AC contactor body 1, with a wiring port 2 on the AC contactor body 1. A mounting lug 4 is fixed at the rear end of the AC contactor body 1, and a mounting hole is formed on the mounting lug 4. The AC contactor body 1 can be installed and fixed through the mounting lug 4 with the mounting hole to ensure stability. The wiring port 2 typically includes an inlet end and an outlet end. A fastening screw is screwed into the wiring port 2 to press the connected wire harness. It also includes a movable limiting member 5 and a positioning member 6. The movable limiting member 5 includes an adjusting member and a sleeve 52 that can vertically limit the end of the fastening screw cap. There are multiple sleeves 52, with one sleeve 52 corresponding to each wiring port 2. The adjusting member can make all sleeves 52 in the same row move synchronously. The positioning member 6 is set on the movable limiting member 5 and is used to limit the position of the sleeve 52 after the position is adjusted.

[0027] Among them, see Figures 2-4 As shown, the adjusting component includes a connecting strip 51 that connects all the sleeve plates 52 in the same row. A rack 53 is fixed on one side of the upper end face of the connecting strip 51. A gear 54 is meshed on the rack 53. A connecting rod 55 extending to the outside of the top of the AC contactor body 1 is connected to the gear 54. The connecting rod 55 is connected to the housing of the AC contactor body 1 through a bearing seat, and a handle 56 is installed at the top of the connecting rod 55.

[0028] In addition, the side wall of the connecting strip 51 is connected with a sliding strip 57, the inside of the AC contactor body 1 is provided with a through slot 3, the side wall of the through slot 3 is provided with a sliding groove 7, the sliding strip 57 is slidingly fitted in the sliding groove 7, the sliding strip 57 is used to move linearly along the sliding groove 7, the stability of the movement of the connecting strip 51 can be ensured, and the sliding groove 7 can be provided with a ball to reduce friction.

[0029] Through the above, after the wire harness in the connecting wire inlet 2 is pressed by the fastening screw, the worker can rotate the connecting rod 55 by using the knob 56, since the connecting rod 55 is rigidly connected with the gear 54, the gear 54 will start to rotate under the driving of the connecting rod 55, along with the continuous rotation of the gear 54, the rack 53 engaged with the gear 54 will move stably along a specific direction under the driving force of the gear 54, the movement of the rack 53 will also drive the synchronous displacement of the connecting strip 51 fixedly connected with the rack 53, in the process of the movement of the connecting strip 51, the cover plate 52 will move towards the nut end of the fastening screw until the cover plate 52 is smoothly sleeved outside the nut end of the fastening screw, at this time, an effective limiting barrier is added for the fastening screw from the direction perpendicular to the fastening screw, the possibility that the fastening screw is loosened due to factors such as vibration and external pulling in the subsequent use process is greatly reduced, and the stability of the wire harness connection is significantly improved.

[0030] Referring to Figures 2-4 As shown in the figure, the positioning member 6 comprises a positioning rod 61 and a through slot 62 arranged in an annular array on the knob 56, the positioning rod 61 can penetrate through any through slot 62, the upper end surface of the AC contactor body 1 is provided with a positioning slot matched with the end of the positioning rod 61, a magnetic block 63 is fixed at the bottom end of the positioning rod 61, and an iron block is fixed at the bottom of the inside of the positioning slot.

[0031] After the cover plate 52 is pressed against the nut end of the fastening screw, the worker can also pass the positioning rod 61 through the corresponding through slot 62 of the positioning slot and embed the bottom end of the positioning rod 61 into the positioning slot, so as to limit the knob 56 and avoid its arbitrary rotation, and after the bottom end of the positioning rod 61 is embedded into the positioning slot, the magnetic block 63 and the iron block are attracted together, so as to improve the stability of the positioning rod 61,

[0032] Among them, a magnetic separation plate can be arranged on the other surface of the magnetic block 63 except the lower end surface, so as to avoid the influence of the magnetic force on the AC contactor body 1.

[0033] The above only describes the preferred embodiments of the utility model and is not used to limit the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An AC contactor comprising an AC contactor body (1) provided with a wiring port (2) on which a fastening screw is screwed, characterized in that, Also include: The movable limiting part (5) includes an adjusting part and a sleeve plate (52) which can vertically limit the end of the fastening screw cap, and the sleeve plate (52) is provided with a plurality of sleeve plates (52), each of which corresponds to a sleeve plate (52), and the adjusting part can make all the sleeve plates (52) in the same row move synchronously; The positioning part (6) is arranged on the movable limiting part (5) and is used for limiting the position after the sleeve plate (52) is adjusted.

2. An AC contactor according to claim 1, characterized in that: The adjusting part includes a connecting strip (51) connected to all the sleeve plates (52), the upper end surface of the connecting strip (51) is fixed with a rack (53) on one side, the rack (53) is engaged with a gear (54), the gear (54) is connected with a connecting rod (55) extending to the outside of the top end of the alternating current contactor body (1), the connecting rod (55) is connected to the shell of the alternating current contactor body (1) through a bearing seat, and the top end of the connecting rod (55) is provided with a knob (56).

3. An AC contactor according to claim 2, characterized in that: The side wall of the connecting strip (51) is connected with a sliding strip (57), the alternating current contactor body (1) is provided with a through groove (3) inside, the side wall of the through groove (3) is provided with a sliding groove (7), and the sliding strip (57) is slidingly connected with the sliding groove (7).

4. An AC contactor according to claim 2, characterized in that: The positioning part (6) includes a positioning rod (61) and a through slot (62) arranged in an annular array on the knob (56), the positioning rod (61) can penetrate any of the through slots (62), and the upper end surface of the alternating current contactor body (1) is provided with a positioning groove matched with the end of the positioning rod (61).

5. An AC contactor according to claim 4, characterized in that: The bottom end of the positioning rod (61) is fixed with a magnetic block (63), and the inside bottom of the positioning groove is fixed with an iron block.

6. An AC contactor according to claim 1, characterized in that: The back end of the alternating current contactor body (1) is fixed with a mounting lug (4), and the mounting lug (4) is provided with a mounting hole.

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