Moving contact for automatic transfer switching equipment

Abstract

The utility model discloses a moving contact for automatic transfer switching equipment, which relates to the technical field of switching equipment and comprises a switch box, a rotating plate and a first contact. Before the first contact head is clamped to the arc-shaped groove, the first contact head makes contact with the second contact head, the first contact head and the second contact head can be driven to move in the direction away from each other in the horizontal direction, and the first spring and the second spring are stretched, so that the contact effect of the first contact head and the second contact head is improved; through the arrangement of a third contact head, the first contact head is clamped to an arc-shaped groove of the third contact head, so that the position of the first contact head can be limited, and therefore, a rotating plate is prevented from shaking when the first contact head does not make contact with a second contact head; the damping assembly can reduce vibration caused when the first contact head collides with the second contact head and the third contact head when the first contact head makes contact with the second contact head and the third contact head.

Description

Technical Field

[0001] The utility model relates to the technical field of switch electrical appliances, in particular to a moving contact for automatic conversion switch electrical appliances. Background Art

[0002] Automatic transfer switching devices are devices that convert one or several load circuits from one power source to another. They can interrupt the power supply to the load during the power conversion period. They are mainly suitable for emergency power supply systems with a rated voltage of no more than 1000V AC or 1500V DC. Automatic transfer switching devices include a contact system and an operating mechanism. The contact system usually uses a moving contact and a static contact with double breakpoints. A spring is arranged on the outside of the moving contact to press the moving contact inward, so that the connection between the moving contact and the static contact is tight.

[0003] For example, a moving contact for an automatic switching switch electrical appliance disclosed in the utility model with authorization announcement number CN218849295U is provided, wherein a first spring and a third spring are provided, and the first spring and the third spring respectively push the movable rod and the connecting plate, thereby pushing the first contact head into close contact with the second contact head. By providing a limiting groove and a push rod, the second spring pushes the second limiting ring to make the push rod fit the inner wall of the limiting groove, thereby preventing the mounting block from shaking under natural conditions.

[0004] This prior art also has the following problems when used:

[0005] The first spring of the device can push the movable rod to move in the horizontal direction. The movement of the movable rod can drive the sleeve rod and the push rod to move, but the push rod can only slide in the slide rail in the horizontal direction. The push rod will prevent the movable rod from moving in the horizontal direction, resulting in the first contact head only rotating with the rotation of the mounting block. The first contact head is difficult to move relative to the mounting block, thereby reducing the contact effect between the first contact head and the second contact head. Utility Model Content

[0006] In order to overcome the deficiencies of the prior art, the utility model provides a moving contact for an automatic transfer switch electrical appliance to solve the technical problems mentioned in the above background.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a moving contact for an automatic switching switch, comprising a switch box, a rotating plate and a first contact head, wherein the top surface of the switch box is rotatably connected with the rotating plate, and the first contact head is arranged inside the switch box;

[0008] A contact assembly, which is arranged outside the first contact head and can limit the position of the first contact head when contacting the first contact head;

[0009] A third contact head, wherein the third contact head is symmetrically arranged inside the switch box, and the third contact head limits the position of the first contact head to prevent the rotating plate from shaking under natural conditions;

[0010] The shock absorbing component is arranged inside the contact component and the third contact head, and the shock absorbing component can reduce the vibration received by the first contact head when it contacts the contact component and the third contact head.

[0011] As a preferred technical solution of the utility model, a first rotating rod is fixedly provided on the bottom surface of the rotating plate, the first rotating rod penetrates the switch box to the inside of the switch box, the first rotating rod is rotatably connected to the switch box, a rotating cylinder is fixedly provided on the bottom surface of the first rotating rod, a second rotating rod is fixedly provided at the bottom of the rotating cylinder, the bottom surface of the second rotating rod is rotatably connected to the center of the bottom surface of the switch box, a first slide plate is slidably connected to the inside of the rotating cylinder, a first connecting rod and a first spring are fixedly provided on the side surface of the first slide plate, the first connecting rod penetrates the rotating cylinder and is slidably connected to the rotating cylinder, the other end of the first connecting rod is fixedly connected to the first contact head, and the other end of the first spring is fixedly connected to the inner wall of the rotating cylinder.

[0012] As a preferred technical solution of the utility model, the contact assembly includes a second contact head, a fixed cylinder, a second slide plate, a second connecting rod, a second spring and an arc-shaped groove. A plurality of second contact heads are equidistantly distributed inside the switch box. An arc-shaped groove is provided on the side of the second contact head close to the first contact head, a second connecting rod is fixedly provided on the side of the second contact head away from the first contact head, a second slide plate is fixedly provided on the other side of the second connecting rod, a fixed cylinder is slidably connected to the outer side of the second slide plate, and a second spring is fixedly provided on the side of the second slide plate close to the second connecting rod.

[0013] As a preferred technical solution of the present utility model, one end of the fixed cylinder away from the second contact head is fixedly connected to the inner wall of the switch box, the second connecting rod passes through the fixed cylinder and is slidably connected to the fixed cylinder, and the side of the second spring away from the second slide is fixedly connected to the inner wall of the fixed cylinder.

[0014] As a preferred technical solution of the utility model, a symmetrical fixing rod is fixedly provided on the inner wall of the switch box, the other end of the fixing rod is fixedly connected to the third contact head, and an arc groove is provided on one side of the third contact head close to the first contact head.

[0015] As a preferred technical solution of the utility model, the shock absorbing assembly includes a slide groove, an arc-shaped slider and a damping spring. The second contact head and the third contact head are both provided with a slide groove. The inner wall of the slide groove is slidably connected with an arc-shaped slider. A damping spring is fixedly provided between the arc-shaped slider and the inner wall of the slide groove.

[0016] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0017] The utility model provides a contact assembly, and the contact assembly can limit the position of the first contact head by making the first contact head engage in the arc-shaped groove of the second contact head after contacting the first contact head, so as to prevent the first contact head from continuing to shake in a natural state after contacting the contact assembly. Before the first contact head engages in the arc-shaped groove, the first contact head contacts the second contact head, which can drive the first contact head and the second contact head to move in the horizontal direction in the direction away from each other, and the first spring and the second spring are both stretched, thereby improving the effect of the first contact head and the second contact head contacting each other. By providing a third contact head, the first contact head engages in the arc-shaped groove of the third contact head to limit the position of the first contact head, thereby preventing the rotating plate from shaking when the first contact head does not contact the second contact head. By providing a shock-absorbing assembly, the shock-absorbing assembly can reduce the vibration of the first contact head hitting the second contact head and the third contact head during the period when the first contact head contacts the second contact head and the third contact head, thereby extending the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model in top view;

[0020] Figure 3 For this utility model Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the rotary drum and contact assembly of the utility model;

[0022] Among them: 1. switch box; 2. rotating plate; 3. first rotating rod; 4. rotating cylinder; 5. first slide plate; 6. first connecting rod; 7. first spring; 8. first contact head; 9. second contact head; 10. third contact head; 11. fixing rod; 12. fixing cylinder; 13. second slide plate; 14. second connecting rod; 15. second spring; 16. sliding groove; 17. arc groove; 18. arc slider; 19. damping spring. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0024] Example

[0025] Please refer to Figure 1-Figure 4 As shown, the utility model provides a moving contact for an automatic switching switch electrical appliance, comprising a switch box 1, a rotating plate 2 and a first contact head 8. The top surface of the switch box 1 is rotatably connected to the rotating plate 2, and a first rotating rod 3 is fixedly arranged on the bottom surface of the rotating plate 2. The first rotating rod 3 penetrates the switch box 1 and is rotatably connected to the switch box 1. A rotating cylinder 4 is fixedly arranged on the bottom surface of the first rotating rod 3, and a second rotating rod is fixedly arranged at the bottom of the rotating cylinder 4. The bottom surface of the second rotating rod is rotatably connected to the center of the bottom surface inside the switch box 1. A first slide plate 5 is slidably connected to the inside of the rotating cylinder 4, and a first connecting rod 6 and a first spring 7 are fixedly arranged on the side surface of the first slide plate 5. The first connecting rod 6 penetrates the rotating cylinder 4 and is slidably connected to the rotating cylinder 4. The other end of the first connecting rod 6 is fixedly arranged with the first contact head 8, and the other end of the first spring 7 is fixedly connected to the inner wall of the rotating cylinder 4. Rotating the rotating plate 2 can drive the first rotating rod 3 and the rotating cylinder 4 to rotate, thereby driving the first contact head 8 inside the switch box 1 to rotate.

[0026] like Figure 1-Figure 4 As shown, a contact assembly is arranged outside the first contact head 8, and the contact assembly consists of a second contact head 9, a fixed cylinder 12, a second slide plate 13, a second connecting rod 14, a second spring 15 and an arc-shaped groove 17. A plurality of second contact heads 9 are evenly distributed inside the switch box 1, and a marking disk is arranged on the top surface of the switch box 1. Markers corresponding to the number and positions of the second contact heads 9 are arranged on the surface of the marking disk. An arc-shaped groove 17 is arranged on the side of the second contact head 9 close to the first contact head 8, and a second connecting rod 14 is fixedly arranged on the side of the second contact head 9 away from the first contact head 8. The second connecting rod 14 penetrates the fixed cylinder 12 and is slidably connected to the fixed cylinder 12, and a second slide plate 13 is fixedly arranged on the other side of the second connecting rod 14. The fixed cylinder 12 is slidably connected to the outer side of the second slide plate 13, and one end of the fixed cylinder 12 away from the second contact head 9 is fixedly connected to the inner wall of the switch box 1, and the second slide plate 13 is fixed on the side close to the second connecting rod 14. A second spring 15 is provided, and the side of the second spring 15 away from the second slide plate 13 is fixedly connected to the inner wall of the fixed cylinder 12. Rotating the rotating plate 2 to drive the first contact head 8 to contact the second contact head 9 can drive the first contact head 8 and the second contact head 9 to move in the horizontal direction in a direction away from each other. The first connecting rod 6 and the second connecting rod 14 respectively guide the movement of the first contact head 8 and the second contact head 9. The first spring 7 and the second spring 15 are both elongated, thereby improving the contact effect between the first contact head 8 and the second contact head 9. The first contact head 8 is adapted to the arc groove 17. When the first contact head 8 is aligned with the arc groove 17, the first contact head 8 can be snapped into the arc groove 17 of the second contact head 9, thereby limiting the position of the first contact head 8 to prevent the first contact head 8 from continuing to shake in a natural state after contacting the contact assembly. Continuing to rotate the rotating plate 2 can drive the first contact head 8 to disengage from the second contact head 9.

[0027] like Figure 1-Figure 3As shown, a symmetrical fixing rod 11 is fixedly provided on the inner wall of the switch box 1, and a third contact head 10 is fixedly provided on the other end of the fixing rod 11. An arc-shaped groove 17 is provided on the side of the third contact head 10 close to the first contact head 8. The rotating plate 2 drives the first contact head 8 to contact the third contact head 10 and align the arc-shaped groove 17, so that the first contact head 8 can be engaged with the arc-shaped groove 17 of the third contact head 10, thereby limiting the position of the first contact head 8, and the first spring 7 is stretched to prevent the rotating plate 2 from shaking when the first contact head 8 does not contact the second contact head 9.

[0028] like Figure 1-Figure 4 As shown, a shock absorbing assembly is arranged inside the contact assembly and the third contact head 10, and the shock absorbing assembly consists of a slide groove 16, an arc-shaped slider 18 and a damping spring 19. The second contact head 9 and the third contact head 10 are both provided with a slide groove 16, and the inner wall of the slide groove 16 is slidably connected with the arc-shaped slider 18, and a damping spring 19 is fixedly arranged between the arc-shaped slider 18 and the inner wall of the slide groove 16, and a damping member is arranged inside the damping spring 19. When the first contact head 8 is just aligned with the arc-shaped groove 17 of the second contact head 9 and the third contact head 10, in order to avoid the first contact head 8 from hitting the second contact head 9 and the third contact head 10 during its movement toward the second contact head 9 and the third contact head 10, the first contact head 8 first contacts the arc-shaped slider 18 before contacting the inner wall of the arc-shaped groove 17, and the arc-shaped slider 18 cooperates with the damping spring 19 to buffer the movement of the first contact head 8, thereby reducing the vibration of the first contact head 8 hitting the second contact head 9 and the third contact head 10, thereby extending the service life of the device.

[0029] Specific working principle:

[0030] When the device is used, the device is connected to the circuit, and the rotating plate 2 is rotated to drive the first rotating rod 3 and the rotating cylinder 4 to rotate, thereby driving the first contact head 8 inside the switch box 1 to rotate. The first contact head 8 contacts the second contact head 9, which can drive the first contact head 8 and the second contact head 9 to move in the horizontal direction away from each other. The first connecting rod 6 and the second connecting rod 14 guide the movement of the first contact head 8 and the second contact head 9 respectively. The first spring 7 and the second spring 15 are both stretched, thereby improving the contact effect between the first contact head 8 and the second contact head 9. When the first contact head 8 is aligned with the arc groove 17, the first contact head 8 can be engaged. The arc-shaped groove 17 of the second contact head 9 limits the position of the first contact head 8 to prevent the first contact head 8 from continuing to shake after contacting the contact assembly in a natural state. The first contact head 8 contacts the arc-shaped slider 18 before contacting the inner wall of the arc-shaped groove 17. The arc-shaped slider 18 cooperates with the damping spring 19 to buffer the movement of the first contact head 8, thereby reducing the vibration of the first contact head 8 hitting the second contact head 9 and the third contact head 10, extending the service life of the device. Continuing to rotate the rotating plate 2 can drive the first contact head 8 to disengage from the second contact head 9, thereby facilitating the first contact head 8 to contact with multiple second contact heads 9 respectively.

[0031] When the device is not in use or the first contact head 8 does not contact the second contact head 9, the rotating plate 2 drives the first contact head 8 to engage into the arc-shaped groove 17 of the third contact head 10, thereby limiting the position of the first contact head 8, and the first spring 7 is stretched to prevent the rotating plate 2 from shaking when the first contact head 8 does not contact the second contact head 9.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A moving contact for an automatic transfer switch, comprising a switch box (1), a rotating plate (2) and a first contact (8), wherein the top surface of the switch box (1) is rotatably connected to the rotating plate (2), and the first contact (8) is arranged inside the switch box (1), characterized in that: A contact assembly, the contact assembly being arranged outside the first contact head (8), and the contact assembly being capable of limiting the position of the first contact head (8) when contacting the first contact head (8); A third contact head (10), the third contact head (10) being symmetrically arranged inside the switch box (1), and the third contact head (10) limiting the position of the first contact head (8) can prevent the rotating plate (2) from shaking under natural conditions; A shock absorbing component is arranged inside the contact component and the third contact head (10), and the shock absorbing component can reduce the vibration received by the first contact head (8) when it contacts the contact component and the third contact head (10).

2. A moving contact for an automatic transfer switch according to claim 1, characterized in that: A first rotating rod (3) is fixedly arranged on the bottom surface of the rotating plate (2), the first rotating rod (3) passes through the switch box (1) to the inside of the switch box (1), the first rotating rod (3) is rotatably connected to the switch box (1), a rotating cylinder (4) is fixedly arranged on the bottom surface of the first rotating rod (3), a second rotating rod is fixedly arranged at the bottom of the rotating cylinder (4), the bottom surface of the second rotating rod is rotatably connected to the center of the bottom surface inside the switch box (1), a first slide plate (5) is slidably connected inside the rotating cylinder (4), a first connecting rod (6) and a first spring (7) are fixedly arranged on the side surface of the first slide plate (5), the first connecting rod (6) passes through the rotating cylinder (4) and is slidably connected to the rotating cylinder (4), the other end of the first connecting rod (6) is fixedly connected to the first contact head (8), and the other end of the first spring (7) is fixedly connected to the inner wall of the rotating cylinder (4).

3. The movable contact for an automatic transfer switch according to claim 1, characterized in that: The contact assembly comprises a second contact head (9), a fixed cylinder (12), a second slide plate (13), a second connecting rod (14), a second spring (15) and an arc-shaped groove (17); a plurality of second contact heads (9) are evenly distributed inside the switch box (1); an arc-shaped groove (17) is provided on a side of the second contact head (9) close to the first contact head (8); a second connecting rod (14) is fixedly provided on a side of the second contact head (9) away from the first contact head (8); a second slide plate (13) is fixedly provided on the other side of the second connecting rod (14); a fixed cylinder (12) is slidably connected to the outer side of the second slide plate (13); and a second spring (15) is fixedly provided on a side of the second slide plate (13) close to the second connecting rod (14).

4. The movable contact for an automatic transfer switch according to claim 3, characterized in that: One end of the fixed cylinder (12) away from the second contact head (9) is fixedly connected to the inner wall of the switch box (1), the second connecting rod (14) passes through the fixed cylinder (12) and is slidably connected to the fixed cylinder (12), and the side of the second spring (15) away from the second slide plate (13) is fixedly connected to the inner wall of the fixed cylinder (12).

5. A moving contact for an automatic transfer switch according to claim 4, characterized in that: A symmetrical fixing rod (11) is fixedly arranged on the inner wall of the switch box (1), the other end of the fixing rod (11) is fixedly connected to the third contact head (10), and an arc-shaped groove (17) is arranged on one side of the third contact head (10) close to the first contact head (8).

6. The movable contact for an automatic transfer switch according to claim 5, characterized in that: The shock absorbing assembly comprises a slide groove (16), an arc-shaped slider (18) and a damping spring (19); the second contact head (9) and the third contact head (10) are both provided with a slide groove (16); the inner wall of the slide groove (16) is slidably connected with the arc-shaped slider (18); and the damping spring (19) is fixedly provided between the arc-shaped slider (18) and the inner wall of the slide groove (16).

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