Contact system of dual-power automatic change-over switch

Abstract

The utility model provides a contact system of a dual-power automatic change-over switch. The contact system comprises a rotatable fixed sheet; fixing parts are fixedly connected to the two sides of the fixing piece respectively, mounting grooves are formed in the faces, facing the fixing piece, of the fixing parts, and the mounting grooves penetrate through the two sides of the fixing parts; the fixing parts are provided with mounting grooves, the mounting grooves are internally connected with long-strip-shaped moving contacts, the moving contacts are fixedly connected with the fixing parts in the length direction of the mounting grooves, the moving contacts are movably connected with the fixing parts in the opposite directions of the two fixing parts, springs are arranged between the moving contacts and the fixing parts, and the moving contacts are close to the fixing pieces under the elastic force action of the springs. The utility model relates to a power supply switch, which is provided with a rotatable linear double-end moving contact, the moving contact rotates to realize electric connection with two static contacts in the same group, the two static contacts are respectively connected with an input end and an output end of a power supply, so that the conduction of the power supply is realized, and two groups of static contacts are arranged to respectively correspond to a frequently-used power supply and a standby power supply. Therefore, switching between the frequently-used power supply and the standby power supply can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of power conversion switches, in particular to a contact system of a dual power automatic conversion switch. Background Art

[0002] A common power supply and standby power supply conversion switch generally has a common power supply access terminal and a standby power supply access terminal, and its electrical contact can be rotated to realize electrical connection switching with the common power supply access terminal and the standby power supply access terminal.

[0003] The contacts generally include a moving contact and a stationary contact, and the moving contact moves to achieve electrical connection with the stationary contact.

[0004] How to design the moving contact and the stationary contact in the dual power automatic transfer switch is an issue that needs to be considered, and how to ensure that the moving contact and the stationary contact form a good electrical contact state 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 system of a dual power automatic transfer switch to solve the above technical problems.

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

[0007] A contact system for a dual power automatic transfer switch,

[0008] including a rotatable fixing plate;

[0009] The two sides of the fixing sheet are respectively fixedly connected with fixing parts, and the surfaces of the fixing parts facing the fixing sheet are provided with mounting grooves, and the mounting grooves are arranged through the two sides of the fixing parts;

[0010] A long strip of moving contact is connected in the installation groove. In the length direction of the installation groove, the moving contact is fixedly connected to the fixed part. In the facing direction of the two fixed parts, the moving contact is movably connected to the fixed part. A spring is provided between the moving contact and the fixed part. Under the elastic force of the spring, the moving contact approaches the fixed sheet.

[0011] The utility model is further configured such that the two ends of the moving contact extend from the two ends of the mounting groove, the two ends of the moving contact in the length direction are respectively widened to form limiting parts, and the limiting parts at the two ends of the moving contact abut against the fixing parts to fix the moving contact.

[0012] The utility model is further configured that a spring seat connected to the spring is provided at the bottom of the installation groove, one end of the spring is connected to the spring seat, and the other end of the spring abuts against the moving contact.

[0013] The utility model is further configured that a spring corresponding to the moving contact is respectively provided at both ends of the moving contact in the length direction.

[0014] The utility model is further configured that two groups of stationary contacts are provided on the sides of the fixing plate, each group of stationary contacts includes two stationary contacts, the two stationary contacts in the same group are symmetrically arranged about the center of the fixing plate, and the stationary contacts are arranged in the circumferential direction of the fixing plate.

[0015] The utility model is further configured to include a normal power supply access terminal, a backup power supply access terminal, and a power supply output terminal. One static contact of the two groups of static contacts is respectively connected to the power supply access terminal and the backup power supply access terminal, and the other static contacts of the two groups of static contacts are connected to the power supply output terminal.

[0016] By adopting the above technical solution, the beneficial effects of the utility model are as follows:

[0017] The contact system of the dual power automatic transfer switch provided by the utility model has a rotatable straight-line double-headed moving contact, which rotates to achieve electrical connection with two static contacts in the same group, and the two static contacts are respectively connected to the input end and the output end of the power supply, so that the power supply is turned on. Two groups of static contacts are provided, corresponding to the normal power supply and the backup power supply respectively, so that the switching between the normal power supply and the backup power supply can be practical.

[0018] The moving contact of the present application is composed of two long moving contacts. The two moving contacts are moved closer to each other under the action of a spring, so that the static contact enters between the two moving contacts, and the two moving contacts move away from each other. After the static contact enters between the two moving contacts, it is elastically clamped between the two moving contacts, thus forming a good electrical connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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.

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] Figure 2 The utility model is shown in FIG. Figure 1 .

[0022] Figure 3 It is a side view of the utility model.

[0023] Figure 4 The utility model is shown in FIG. Figure 2 .

[0024] Figure 5 The structure of the utility model is shown in FIG. Figure 2 .

[0025] Figure 6 It is a structural schematic diagram of the fixed part and the moving contact of the utility model.

[0026] Figure 7 It is a side view of the fixed part and the moving contact of the utility model.

[0027] Figure 8 The structure of the utility model is shown in FIG. Figure 3 . DETAILED DESCRIPTION

[0028] 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.

[0029] For reference Figure 1-8 The utility model is described as follows:

[0030] Embodiment 1: A contact system of a dual power automatic transfer switch,

[0031] The utility model comprises a rotatable fixing plate 1, and the fixing plate 1 is circular.

[0032] The fixing plate 1 is fixedly connected with fixing parts 2 on both sides of the axial direction. The fixing parts 2 are cylindrical, and the diameter of the fixing parts 2 is equal to the diameter of the fixing plate 1. One of the fixing parts 2 is provided with a protruding positioning column 21, and the other fixing part 2 is provided with a corresponding positioning hole 22. The fixing plate 1 is provided with a hole 11 for the positioning column 21 to pass through. Both fixing parts 2 are provided with connecting holes 23, and the fixing plate 1 is provided with through holes 12 corresponding to the connecting holes 23. Bolts are connected in the connecting holes 23 and the through holes 12 to fix the two fixing parts 2 and the fixing plate 1.

[0033] A protruding connection column 24 is provided on the surface of one of the fixing parts 2 facing away from the fixing plate 1 , and a protruding boss 25 is provided on the surface of the other fixing part 2 facing away from the fixing plate 1 . A connecting groove 26 connected to the connection column 24 is provided on the boss 25 .

[0034] A mounting groove 3 is provided on the surface of the fixing portion 2 facing the fixing sheet 1 . The mounting groove 3 is arranged along the radial direction of the fixing portion 2 , and the mounting groove 3 penetrates through both sides of the fixing portion 2 in the radial direction.

[0035] An elongated moving contact 4 is connected in the mounting groove 3. In the length direction of the mounting groove 3, the moving contact 4 is fixedly connected to the fixing part 2. Two ends of the moving contact 4 extend out from two ends of the mounting groove 3. Two ends of the moving contact 4 in the length direction are widened to form limiting parts 6. The limiting parts 6 at both ends of the moving contact 4 abut against the fixing part 2 to fix the moving contact 4, which is equivalent to the fixing part 2 being located between the limiting parts 6 at both ends of the moving contact 4, thereby limiting the movement of the moving contact 4 along the length direction of the mounting groove 3.

[0036] The width of the moving contact 4 is equal to the width of the mounting groove 3 .

[0037] In the direction in which the two fixed parts 2 face each other, the moving contact 4 is movably connected to the fixed part 2, and a spring 5 is provided between the moving contact 4 and the fixed part 2. Under the elastic force of the spring 5, the moving contact 4 approaches the fixed sheet 1, and the spring 5 applies elastic force to the moving contact 4. A spring seat connected to the spring 5 is provided at the bottom of the installation groove 3, one end of the spring 5 is connected to the spring seat, and the other end of the spring 5 abuts against the moving contact 4. A spring 5 corresponding to the moving contact 4 is provided at each end of the length direction of the moving contact 4.

[0038] The fixing plate 1 and the two fixing parts 2 and the moving contact 4 thereon form a rotatable moving contact structure. The fixing plate 1 and the two fixing parts 2 are combined into a whole and rotatably mounted on the switch housing.

[0039] In the above technical solution, two moving contacts 4 extend from the radial ends of the two fixed parts 2 respectively, and the two moving contacts 4 form a moving contact structure that is in contact with the static contact. When the static contact enters between the two moving contacts 4, an elastic clamping connection structure can be formed, and the electrical contact is stable, firm and good.

[0040] Two groups of stationary contacts 7 are provided on the side of the stator 1. The two groups of stationary contacts 7 are symmetrically arranged. Each group of stationary contacts 7 includes two stationary contacts 7. The two stationary contacts 7 in the same group are symmetrically arranged about the center of the stator 1. The stationary contacts 7 are arranged in the circumferential direction of the rotation of the stator 1. The moving contact 4 has three states, two states electrically connected to the two groups of stationary contacts 7, and one state not electrically connected to the two groups of stationary contacts 7.

[0041] It also includes a normal power supply access terminal 8, a backup power supply access terminal 9, and a power supply output terminal 10. One static contact 7 of the two groups of static contacts 7 is connected to the power supply access terminal and the backup power supply access terminal 9 through a wire, and the other static contacts 7 of the two groups of static contacts 7 are connected to the power supply output terminal 10 through a wire. By adopting the above technical solution, when the moving contact 4 is connected to the two static contacts 7 of one group of barrels, the access of the normal power supply and the backup power supply can be realized.

[0042] 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 system for a dual power automatic transfer switch, characterized in that: It comprises a rotatable fixed plate (1); The two sides of the fixing plate (1) are respectively fixedly connected with fixing parts (2), and the surface of the fixing part (2) facing the fixing plate (1) is provided with a mounting groove (3), and the mounting groove (3) is arranged through the two sides of the fixing part (2); A long strip-shaped moving contact (4) is connected in the installation groove (3); in the length direction of the installation groove (3), the moving contact (4) is fixedly connected to the fixed part (2); in the direction in which the two fixed parts (2) face each other, the moving contact (4) is movably connected to the fixed part (2); a spring (5) is provided between the moving contact (4) and the fixed part (2); under the elastic force of the spring (5), the moving contact (4) approaches the fixed sheet (1).

2. The contact system of a dual power automatic transfer switch according to claim 1, characterized in that: The two ends of the moving contact (4) extend out from the two ends of the mounting groove (3), and the two ends of the moving contact (4) in the length direction are respectively widened to form limiting portions (6), and the limiting portions (6) at the two ends of the moving contact (4) abut against the fixing portion (2) to fix the moving contact (4).

3. The contact system of a dual power automatic transfer switch according to claim 1, characterized in that: A spring seat connected to the spring (5) is provided at the bottom of the installation groove (3), one end of the spring (5) is connected to the spring seat, and the other end of the spring (5) abuts against the moving contact (4).

4. The contact system of a dual power automatic transfer switch according to claim 3, characterized in that: A spring (5) corresponding to the moving contact (4) is provided at each of the two ends in the length direction.

5. The contact system of a dual power automatic transfer switch according to claim 1, characterized in that: Two groups of stationary contacts (7) are arranged on the side of the fixing plate (1), each group of stationary contacts (7) includes two stationary contacts (7), and the two stationary contacts (7) in the same group are symmetrically arranged about the center of the fixing plate (1), and the stationary contacts (7) are arranged in the circumferential direction of the fixing plate (1).

6. The contact system of a dual power automatic transfer switch according to claim 5, characterized in that: It also comprises a normal power supply access terminal (8), a standby power supply access terminal (9), and a power supply output terminal (10); one of the two sets of stationary contacts (7) is respectively connected to the power supply access terminal and the standby power supply access terminal (9); and the other stationary contacts (7) of the two sets of stationary contacts (7) are connected to the power supply output terminal (10).

Images