Drawer type automatic change-over switch with safety protection function
By introducing a transmission mechanism into the drawer-type automatic transfer switch, the problem of the transfer switch not being able to maintain the open state when connected or disconnected is solved, and protection against excessive electric arc is achieved, ensuring equipment safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-28
- Publication Date
- 2026-03-27
AI Technical Summary
Existing drawer-type dual power transfer switches cannot guarantee that the switch is in the open state when connected or disconnected, which can lead to excessive electric arcs that damage electrical appliances and pose safety hazards.
A drawer-type automatic transfer switch with a transmission mechanism was designed, including a trip support plate, a transmission plate, a trip lever, and a locking shaft assembly. The transmission mechanism controls the opening and closing states of the transfer switch, ensuring that it remains in the open state when connected or disconnected, thus avoiding excessive electric arc.
This effectively prevents excessive electric arcs during the connection or disconnection of the changeover switch and power terminal block, protecting electrical equipment and eliminating potential safety hazards.
Smart Images
Figure CN224053034U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a drawer type automatic transfer switch with safety protection function. BACKGROUND
[0002] With the development of society, people's requirements for power grid and its transmission and distribution process are gradually improved, mainly in the safety, reliability, sustainability, easy maintenance of power supply equipment and other aspects, therefore, the drawer type automatic transfer switch with the above typical grooves is widely used in the power supply system of data center, mobile communication, subway, hospital, operating room, bank, financial institution and the like.
[0003] The existing drawer type dual power supply transfer switch comprises a drawer seat and a transfer switch slidingly connected in the drawer seat, wherein a power supply wiring panel is arranged on the rear plate of the drawer seat, the transfer switch can move in the drawer seat, and the transfer switch can be connected or disconnected with the power supply wiring panel.
[0004] However, the existing drawer type dual power supply transfer switch has the following problems in use: when the transfer switch is connected or disconnected with the power supply wiring panel, it cannot be ensured that the transfer switch is in an open state, which leads to excessive electric arc in the connecting or disconnecting moment and causes damage to the electric appliance; and when the transfer switch needs to be pulled out from the front end of the drawer for further maintenance, it also cannot be ensured that the transfer switch is in an open state, which leads to certain safety hazards. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing a drawer type automatic transfer switch with safety protection function to solve the problems in the prior art.
[0006] The purpose of the utility model can be realized by the following technical scheme:
[0007] A drawer type automatic transfer switch with safety protection function, the drawer type automatic transfer switch comprises a drawer seat and a transfer switch body slidingly connected in the drawer seat;
[0008] The transfer switch body is further provided with a transmission mechanism, the transmission mechanism comprises a fixedly arranged tripping support plate, a transmission plate is rotatably arranged on one side of the tripping support plate, and one end of the transmission plate is connected with a tripping shaft lever through sliding connection to control the rotation of the lock shaft group.
[0009] Further, a power supply wiring panel group is arranged on the rear plate of the drawer seat, a limiting plate is arranged on the side plate of the drawer seat, the side plate of the drawer seat is provided with a guide rail for sliding of the transfer switch body, and a roller sliding in the guide rail is installed on the transfer switch body.
[0010] Further, the trip support plate is provided with a threaded hole and a guide groove for fixing a rivet, and the trip shaft lever is slidably arranged in the guide groove.
[0011] Further, one end of the transmission plate is riveted with a trip lever, the other end is provided with a groove, the groove is slidably connected with the trip shaft lever, the transmission plate is provided with a fixing hole, and the rivet is connected with the threaded hole through the fixing hole.
[0012] Further, the limiting plate is fixed on the drawer seat side plate, the limiting plate is provided with a sliding groove for moving the trip lever, and the sliding groove is fixedly provided with a boss for moving the trip lever.
[0013] Further, the transmission mechanism comprises a rotatingly arranged lock shaft group, the lock shaft group is connected with the trip shaft lever, the front end of the lock shaft group is provided with a notch matched with the needle roller shaft, and the transmission mechanism is provided with a lock shaft for fixing the needle roller shaft.
[0014] The utility model discloses beneficial effect:
[0015] The utility model provides a drawer type double power transfer switch with safety protection function, reasonable structure, through setting up safety protection device, can guarantee that transfer switch is in the open state when transfer switch is connected or disconnected with power supply wiring row, avoids that transfer switch and power supply wiring row connect or disconnect instantaneous arc too big and causes electric appliance damage, and can make transfer switch guarantee that transfer switch is in the open state before being drawn out from the drawer frame, thereby eliminating the hidden danger. DRAWINGS
[0016] The utility model discloses further illustrate in combination with the drawings.
[0017] Figure 1 It is the structure schematic diagram of automatic transfer switch of the utility model;
[0018] Figure 2 It is the internal structure schematic diagram of automatic transfer switch of the utility model;
[0019] Figure 3 It is the local structure schematic diagram of automatic transfer switch of the utility model;
[0020] Figure 4 It is the structure schematic diagram of limiting block of the utility model;
[0021] Figure 5 It is the partial structure schematic diagram of transmission mechanism of the utility model;
[0022] Figure 6 It is the local structure schematic diagram of transmission mechanism of the utility model;
[0023] Figure 7 It is the structure schematic diagram of isolation position of the utility model;
[0024] Figure 8 This is a schematic diagram of the test position structure of this utility model;
[0025] Figure 9 This is a schematic diagram of the connection position structure of this utility model.
[0026] The annotations in the attached figures are explained as follows:
[0027] 1. Drawer base; 2. Changeover switch body; 3. Power terminal block assembly; 4. Limit plate; 5. Transmission plate; 6. Rivet; 7. Tripping support plate; 8. Tripping lever; 10. Locking shaft assembly; 11. Locking shaft; 12. Needle roller shaft; 13. Transmission mechanism; 14. Roller; 15. Guide rail; 16. Tripping shaft lever; 41. Boss; 51. Fixing hole; 52. Groove; 71. Guide groove; 72. Threaded hole; 101. Slot. Detailed Implementation
[0028] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0029] A drawer-type automatic transfer switch with safety protection function, such as Figures 1-9 As shown, it includes a drawer base 1 and a changeover switch body 2 slidably connected in the drawer base 1; a power terminal block 3 is provided on the back plate of the drawer base 1, a limit plate 4 is provided on the side plate of the drawer base 1, a guide rail 15 is provided on the side plate of the drawer base 1 for the changeover switch body 2 to slide, a roller 14 is installed on the changeover switch body 2 and slides in the guide rail 15, and a transmission mechanism 13 is also provided on the changeover switch body 2.
[0030] The changeover switch body 2 can move between three positions in the drawer seat 1, namely the isolation position, the test position, and the connection position, and the isolation position, the test position, and the connection position are arranged sequentially along the sliding guide rail 15 provided on the drawer seat 1.
[0031] Specifically, when the changeover switch body 2 is in the isolated position, the changeover switch body 2 is not connected to the control power supply and main circuit power supply of the drawer seat 1, and the changeover switch body 2 can be pulled out or replaced.
[0032] When the switch body 2 is in the test position, the switch body 2 is connected with the power supply of the drawer seat 1, and the power supply wiring group 3 arranged on the rear plate of the drawer seat 1 is not connected, so that the switch body 2 can be tested.
[0033] When the switch body 2 is in the connection position, the switch body 2 is connected with the power supply of the drawer seat 1, and the power supply wiring group 3 arranged on the rear plate of the drawer seat 1 is connected, so that the switch body 2 can switch the power supply on and off.
[0034] The transmission mechanism 13 includes a fixed trip support plate 7, the trip support plate 7 is provided with a threaded hole 72 for fixing the rivet 6 and a guide groove 71 for guiding, one side of the trip support plate 7 is provided with a transmission plate 5 for fixing the rivet 6, one end of the transmission plate 5 is riveted with a trip lever 8, the other end is provided with a groove 52 for driving the trip shaft lever 16, the transmission plate 5 is provided with a fixed hole 51, and the rivet 6 is connected with the threaded hole 72 through the fixed hole 51.
[0035] The limiting plate 4 is fixed on the side plate of the drawer seat 1, the limiting plate 4 is provided with a sliding groove, the sliding groove is fixedly provided with a boss 41, the trip lever 8 is linked with the limiting plate 4 fixedly arranged on the side plate of the drawer seat 1, the trip lever 8 is located in the sliding groove, and the trip lever 8 is lifted by the boss 41 to move, so that the transmission plate 5 can rotate along the fixed rivet 6.
[0036] Specifically, as shown in Figure 4 The trip lever 8 is linked with the boss 41 arranged on the limiting plate 4 to rotate the transmission plate 5 along the fixed rivet 6.
[0037] The transmission mechanism 13 includes a rotatably arranged lock shaft group 10, the lock shaft group 10 is fixedly provided with a trip shaft lever 16 linked with the groove 52 on the transmission plate 5, the front end of the lock shaft group 10 is provided with a notch 101 linked with the needle roller shaft 12, and the transmission mechanism 13 is provided with a lock shaft 11 for fixing the needle roller shaft 12.
[0038] Specifically, when the trip shaft lever 16 fixedly arranged on the lock shaft group 10 is subjected to the downward force of the groove 52 on the transmission plate 5, the lock shaft group 10 rotates counterclockwise, so that the notch 101 on the lock shaft group 10 is separated from the fixed needle roller shaft 12, and at this time, the switch body 2 is tripped and powered off.
[0039] When the trip shaft lever 16 fixedly arranged on the lock shaft group 10 is not subjected to the downward force of the groove 52 on the transmission plate 5, at this time, the switch body 2 is normally closed.
[0040] In use, the switch body 2 can move between three positions in the drawer seat 1, and the three positions are the isolation position, the test position and the connection position respectively.
[0041] When the switch body 2 is in the isolation position, the relative position between the limiting plate 4 arranged on the side plate of the drawer seat 1 and the tripping lever 8 arranged in the switch body 2 is shown as position one. Figure 7
[0042] When the switch body 2 is in the test position, the relative position between the limiting plate 4 arranged on the side plate of the drawer seat 1 and the tripping lever 8 arranged in the switch body 2 is shown as position two. Figure 8
[0043] When the switch body 2 is in the connection position, the relative position between the limiting plate 4 arranged on the side plate of the drawer seat 1 and the tripping lever 8 arranged in the switch body 2 is shown as position three. Figure 9
[0044] When the switch body 2 moves from the isolation position to the connection position, and the main circuit of the switch body 2 is in the closed state, at this time, the tripping lever 8 contacts the boss 41 on the limiting plate 4, forcing the tripping lever 8 to move upward, the transmission plate 5 rotates counterclockwise along the fixed rivet 6, thereby driving the tripping shaft lever 16 to move downward, the tripping shaft lever 16 moving downward drives the lock shaft group 10 to rotate counterclockwise, so that the slot 101 arranged on the lock shaft group 10 is away from the needle roller shaft 12 arranged on the lock shaft 11, thereby making the switch body 2 trip and power off, thereby avoiding the electric arc between the power supply wiring panel arranged on the switch body 2 and the power supply wiring panel group 3 arranged on the rear plate of the drawer seat 1, causing damage to the electric appliance.
[0045] When the switch body 2 moves from the connection position to the test position, the principle is the same.
[0046] The basic principle, main recesses and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model. These changes and improvements all fall within the scope of the utility model claimed.
Claims
1. A drawer-type automatic transfer switch with safety protection function, characterized in that, The drawer type automatic transfer switch comprises a drawer seat (1) and a transfer switch body (2) slidably connected in the drawer seat (1); The transfer switch body (2) is further provided with a transmission mechanism (13), the transmission mechanism (13) comprises a fixedly arranged tripping support plate (7), one side of the tripping support plate (7) is rotatably provided with a transmission plate (5), one end of the transmission plate (5) is connected with a tripping shaft lever (16) through sliding connection to control rotation of a lock catch shaft group (10).
2. The draw-out type automatic transfer switch having a safety guard function according to claim 1, characterized by, The rear plate of the drawer seat (1) is provided with a power connection row group (3), the side plate of the drawer seat (1) is provided with a limiting plate (4), the side plate of the drawer seat (1) is provided with a guide rail (15) for sliding of the transfer switch body (2), and the transfer switch body (2) is provided with a roller (14) sliding in the guide rail (15).
3. The draw-out type automatic transfer switch having a safety guard function according to claim 2, characterized by, The tripping support plate (7) is provided with a threaded hole (72) and a guide groove (71) for fixing a rivet (6), and the tripping shaft lever (16) is slidingly arranged in the guide groove (71).
4. The draw-out type automatic transfer switch having a safety guard function according to claim 1, characterized by, One end of the transmission plate (5) is riveted with a tripping lever (8), the other end is provided with a groove (52), the groove (52) is slidingly connected with the tripping shaft lever (16), the transmission plate (5) is provided with a fixing hole (51), and the rivet (6) is connected with the threaded hole (72) through the fixing hole (51).
5. The draw-out type automatic transfer switch having a safety guard function according to claim 2, characterized by, The limiting plate (4) is fixed on the side plate of the drawer seat (1), the limiting plate (4) is provided with a sliding groove for movement of the tripping lever (8), and the sliding groove is fixedly provided with a boss (41) for moving the tripping lever (8).
6. The draw-out type automatic transfer switch having a safety guard function according to claim 1, characterized by, The transmission mechanism (13) comprises a rotatably arranged lock catch shaft group (10), the lock catch shaft group (10) is connected with the tripping shaft lever (16), the front end of the lock catch shaft group (10) is provided with a notch (101) matched with a needle roller shaft (12), and the transmission mechanism (13) is provided with a lock catch shaft (11) for fixing the needle roller shaft (12).