Low-voltage switch drawer interlocking mechanism

Abstract

The invention discloses a low-voltage switch drawer interlocking mechanism which comprises a drawer body, guide plates are arranged on the two sides of the drawer body, and bayonets corresponding to a separation position, a test position and a connection position respectively are formed in the guide plates in the sliding direction of the drawer body. One side of the front end of the drawer body is provided with an unlocking button, the unlocking button is connected with a push plate, the lower part of the push plate is bent to form a bent part, and the bent part is connected with a first bolt; a left transverse insertion plate and a right transverse insertion plate are mounted in the drawer body; inserting plates corresponding to the bayonets are formed at the outer ends of the left transverse inserting plate and the right transverse inserting plate; through holes for the first bolts to penetrate through are formed in the inner ends of the left transverse insertion plate and the right transverse insertion plate correspondingly, and guide slopes are formed in the through holes. According to the invention, the problem of unsmooth contact of the primary contact due to swinging forward movement of the existing switch drawer is solved, and the correct position of the test position can be quickly and accurately fed back to a worker.

Description

Technical Field

[0001] The invention relates to the field of machinery, and in particular to a low-voltage switch drawer interlocking mechanism. Background Art

[0002] At present, low-voltage switch drawers usually use the rotation of the middle cam to realize the opening and closing action of the drawer, and the middle rocking in and out mechanism is used to make the drawer move forward and backward. It is easy to rock forward during use, which makes the primary contact not smooth, and the mechanism is complicated and difficult to maintain. In addition, when the existing switch drawer enters the separation position, test position and connection position, it is manually observed to push it to the actual position, usually requiring a position indicator or setting a position sensor. However, setting the position indicator requires observation by the staff, which makes the operation cumbersome. If a position sensor fails, it is difficult to indicate, resulting in position errors. Moreover, when the thrust is too large and too fast, it is easy to push it directly from the separation position to the connection position. In addition, there are problems such as easy false triggering, and the inability of the secondary connector to automatically return to its original position when the low-voltage switch drawer is pulled out. Summary of the invention

[0003] The purpose of the present invention is to provide a low-voltage switch drawer interlocking mechanism.

[0004] To solve the above problems, the technical solution of the present invention is:

[0005] A low-voltage switch drawer interlocking mechanism comprises a drawer body, guide plates are arranged on both sides of the drawer body, and the guide plates form bayonet holes corresponding to a separation position, a test position and a connection position respectively along the sliding direction of the drawer body; an unlocking button is installed on one side of the front end of the drawer body, the unlocking button is connected to a push plate, the lower part of the push plate is bent to form a bent part, and the bent part is connected to a first bolt;

[0006] A left transverse plug plate and a right transverse plug plate are installed in the drawer body; the outer ends of the left transverse plug plate and the right transverse plug plate are formed with plug plates corresponding to the bayonet; the inner ends of the left transverse plug plate and the right transverse plug plate are formed with through holes for the first bolt to pass through, and the through holes are formed with guide inclined surfaces. When the push plate moves forward, the first bolt squeezes the guide inclined surfaces to make the left transverse plug plate and the right transverse plug plate slide inward, so that the plug plates are separated from the bayonet;

[0007] The left transverse insert plate and the right transverse insert plate are both connected to a first return spring;

[0008] A connecting plate is installed on the top of the front end of the drawer body, and a long hole is formed on the connecting plate. A limiting bolt fixedly connected to the drawer body is inserted into the long hole, and the limiting bolt is pre-tightened to fix the connecting plate; a secondary connector is connected to the connecting plate; a primary connector is installed at the lower part of the drawer body.

[0009] A further improvement is that the drawer body is connected to a guide plate, and a guide hole is formed on the guide plate for the left horizontal plug plate and the right horizontal plug plate to pass through; a U-shaped notch is formed on the left horizontal plug plate and the right horizontal plug plate, and a spring sleeve rod is formed in the middle of the U-shaped notch, and the first return spring is sleeved on the spring sleeve rod and squeezes the guide plate.

[0010] A further improvement is that a slope corresponding to the test position is formed in the middle of the guide plate; a vertical slide groove is formed on the side of the drawer body, the vertical slide groove is connected to a slide plate via a sliding bolt, and a roller is installed on the slide plate to press on the upper surface of the guide plate; the slide plate is connected to a compression spring installed on the drawer body; and a first limit hole is formed on the connecting plate to cooperate with the sliding bolt.

[0011] As a further improvement, the drawer body is inserted into the cabinet; a limit hook is hingedly connected to the cabinet, and an inclined guide surface is formed at the lower part of the bottom end of the limit hook; and a limit plate cooperating with the limit hook is fixed to the connecting plate.

[0012] As a further improvement, a U-shaped groove is formed on the side of the drawer body, and a raised trapezoidal block is formed at the bottom of the U-shaped groove; the limiting hook is connected to a second bolt inserted into the U-shaped groove.

[0013] As a further improvement, the connecting plate is connected to an L-shaped limiting plate, and a guide limiting hole is formed at the bottom of the limiting plate. A locking plate is inserted into the guide limiting hole, and the locking plate is connected to a transverse plate, and a V-shaped groove is formed on the upper surface of the transverse plate adjacent to the locking plate, and a third bolt inserted into the V-shaped groove is connected to the push plate; an insertion portion is formed on the top of the locking plate; a plug hole matching the insertion portion is formed on the connecting plate, and a limiting pin matching the insertion portion is fixed on the drawer body;

[0014] The card plate is connected with a second return spring

[0015] As a further improvement, the limit plate and the connecting plate are formed integrally.

[0016] Advantages of the present invention:

[0017] 1. The pushing and positioning are smooth and accurate, which can effectively overcome the problem that the existing switch drawer swings forward and causes the primary contact to be not smooth.

[0018] 2. It can provide feedback to the staff on the correct position of the test position. If the indicator mark needs to be checked again, there will be no problem of failure to provide prompts due to damage to electrical components. This overcomes the problem of cumbersome position checking and prone to accidents when using switch drawers.

[0019] 3. The interlocking structure can effectively prevent accidental contact with the connection position when in the test position.

[0020] 4. The interlocking mechanism keeps the switch drawer in the same state when plugged in and out, thus preventing the secondary connector from failing to plug into place when inserted for the second time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the drawer body;

[0022] Figure 2 It is the position structure diagram of the limit hook;

[0023] Figure 3 It is a structural schematic diagram of the push plate;

[0024] Figure 4 Schematic diagram of the structure of the insertion part and the limit pin''

[0025] Figure 5 It is a schematic diagram of the overall structure of the left transverse plug board and the right transverse plug board;

[0026] Figure 6 It is a detailed picture of the left horizontal insert and the right horizontal insert;

[0027] Figure 7 It is a structural schematic diagram of the U-shaped groove. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below.

[0029] like Figure 1-Figure 7 A low-voltage switch drawer interlocking mechanism shown in the figure comprises a drawer body 1, guide plates 2 are arranged on both sides of the drawer body 1, and the guide plates 2 form bayonet openings 3 corresponding to a separation position, a test position and a connection position respectively along the sliding direction of the drawer body 1; an unlocking button 4 is installed on one side of the front end of the drawer body 1, and the unlocking button 4 is connected to a push plate 5, and the lower part of the push plate 5 is bent to form a bent portion 501, and the bent portion 501 is connected to a first bolt 6;

[0030] A left transverse plug board 7 and a right transverse plug board 8 are installed in the drawer body 1; the outer ends of the left transverse plug board 7 and the right transverse plug board 8 are formed with plug boards 801 corresponding to the bayonet 3; the inner ends of the left transverse plug board 7 and the right transverse plug board 8 are formed with through holes 701 for the first bolt 6 to pass through, and the through holes 701 are formed with guide inclined surfaces 702. When the push plate 5 moves forward, the first bolt 6 squeezes the guide inclined surfaces 702 to make the left transverse plug board 7 and the right transverse plug board 8 slide inward, so that the plug boards 801 are separated from the bayonet 3;

[0031] The left transverse insert plate 7 and the right transverse insert plate 8 are both connected with a first return spring 9;

[0032] In this way, initially, the plug plate 801 is in the position of the first bayonet 3, and the low-voltage switch drawer is in the separated position. Then hold the left and right sides of the drawer body with your hands, and press the unlocking button 4 with your thumbs. At this time, the first bolt 6 squeezes the guide slope 702 to make the left horizontal plug plate 7 and the right horizontal plug plate 8 slide inward, and the plug plate 801 is disengaged from the bayonet 3, and then the low-voltage switch drawer can be pushed forward. Release the unlocking button 4 until it reaches the test position. At this time, the plug plate 801 is inserted into the second bayonet 3 to enter the test position. Similarly, when entering the connection position, press the unlocking button 4 again to push. Since there are guide plates 2 on both sides to limit the position, and the left and right sides push the drawer body 1 at the same time, there will be no problem of unsmooth contact of the primary contact due to swinging forward.

[0033] Among them, the drawer body 1 is connected to a guide plate 10, and a guide hole 101 is formed on the guide plate 10 for the left horizontal plug plate 7 and the right horizontal plug plate 8 to pass through; a U-shaped notch 102 is formed on the left horizontal plug plate 7 and the right horizontal plug plate 8, and a spring sleeve rod 103 is formed in the middle of the U-shaped notch 102, and the first return spring 9 is sleeved on the spring sleeve rod 103 and squeezes the guide plate 10.

[0034] A connecting plate 19 is installed at the top front end of the drawer body 1, and a long hole 23 is formed on the connecting plate 19. A limiting bolt 24 fixedly connected to the drawer body 1 is inserted into the long hole 23. The limiting bolt 24 pre-tightens and fixes the connecting plate 19; a secondary connector 22 is connected to the connecting plate 19; and a primary connector 25 is installed at the lower part of the drawer body 1.

[0035] In order to further prevent the advancement speed from being too fast and push directly from the separation position to the connection position, a slope 201 corresponding to the test position is formed in the middle of the guide plate 2; a vertical slide groove 104 is formed on the side of the drawer body 1, and the vertical slide groove 104 is connected to a slide plate 106 through a sliding bolt 105, and a roller 107 is installed on the slide plate 106 to press on the upper surface of the guide plate 2; the slide plate 106 is connected to a compression spring 1061 installed on the drawer body 1; a first limiting hole 191 cooperating with the sliding bolt 105 is formed on the connecting plate 19.

[0036] Thus, when the roller 107 reaches the slope 201, it will be subject to the resistance of the slope. At the same time, when it moves upward, it needs to squeeze the compression spring 1061 to overcome the resistance. At this time, the staff can feel obvious resistance when pushing the low-voltage switch drawer, which indicates that it is about to enter the test position and needs to release the unlocking button 4 so that the plug-in board 801 can be inserted into the second bayonet 3. Then, when the roller 107 does not reach the top of the slope 201, the sliding bolt 105 is stuck in the first limit hole 191, so that the connecting plate 19 cannot move along the long hole 23, thereby ensuring that the secondary plug-in connector 22 can be plugged in place. After the secondary plug-in connector 22 is plugged in place, the primary contact is not plugged in, and the relevant test can be carried out.

[0037] In order to prevent the low-voltage switch drawer from moving forward and causing danger to the primary contact plugging due to the staff accidentally touching or pushing it in the test position, the connecting plate 19 is connected to an L-shaped limit plate 192, and a guide limit hole 193 is formed at the bottom of the limit plate 192. The guide limit hole 193 is inserted with a card plate 16, and the card plate 16 is connected to a transverse plate 161. A V-shaped groove 17 is formed on the upper surface of the transverse plate 161 adjacent to the card plate 16, and the push plate 5 is connected to a third bolt 18 inserted into the V-shaped groove 17; an insertion portion 162 is formed at the top of the card plate 16; a socket 20 matched with the insertion portion 162 is formed on the connecting plate 19, and a limit pin 26 matched with the insertion portion 162 is fixed on the drawer body 1; and a second reset spring 21 is connected to the card plate 16.

[0038] So when in the test position, Figure 4 As shown, after releasing the unlock button 4, the locking plate 16 rises under the action of the second reset spring 21, so that the insertion portion 162 is inserted into the insertion hole 20, and the insertion portion 162 blocks the limit pin 26 from moving forward, thereby blocking the drawer body 1 from moving forward, thereby preventing the primary contact from moving forward and connecting. When the test is completed and it is necessary to move to the connection position, the unlock button 4 is pressed, and the push plate 5 drives the third bolt 18 to move forward, squeezing the cross plate 161, so that the insertion portion 162 moves downward, and then pushes forward again. Since the secondary connector 22 has been plugged in to form resistance, when moving forward, the limit bolt 24 moves along the long hole 23 until the primary contact is plugged in, that is, the connection position is reached.

[0039] In order to achieve the connection position, when the drawer body 1 is taken out, the low-voltage switch drawer remains in the same state as when it was inserted, a limit hook 13 is hingedly connected to the cabinet 11 into which the drawer body 1 is inserted, and an inclined guide surface 14 is formed at the bottom of the bottom end of the limit hook 13; a limit plate 23 that cooperates with the limit hook 13 is fixed to the connecting plate 19. A U-shaped groove 108 is formed on the side of the drawer body 1, and a raised trapezoidal block 1081 is formed at the bottom of the U-shaped groove 108; the limit hook 13 is connected to a second bolt 15 inserted into the U-shaped groove 108.

[0040] In this way, when reaching the connection position, the limit plate 23 pushes the inclined guide surface 14 to make the limit hook 13 swing upward. When reaching the connection position, the limit plate 23 passes through the area of ​​the inclined guide surface 14, and the limit hook 13 swings downward under gravity and hooks the limit plate 23.

[0041] In this way, the connection position is reached. When the drawer body 1 needs to be pulled out later, the unlocking button 4 is pressed and pulled outward. Since the limit hook 13 hooks the limit plate 23, the limit plate 23 slides along the limit bolt 24 inserted into the long hole 23 until it returns to the position before the test position. Then, when the drawer body 1 is pulled out further, the second bolt 15 reaches the position of the trapezoidal block 1081, and the trapezoidal block 1081 pushes the second bolt 15 to move upward, thereby causing the limit hook 13 to swing upward, thereby disengaging from the limit plate 23, so that the drawer body 1 is pulled out smoothly, while keeping the positions of the components consistent when pulled out and pushed in. Among them, the limit plate 23 is formed integrally with the connecting plate 19.

[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 and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low voltage switch drawer interlocking mechanism, characterized in that: The invention comprises a drawer body (1), guide plates (2) are arranged on both sides of the drawer body (1), and the guide plates (2) form bayonet holes (3) corresponding to a separation position, a test position and a connection position respectively along the sliding direction of the drawer body (1); an unlocking button (4) is installed on one side of the front end of the drawer body (1), the unlocking button (4) is connected to a push plate (5), the lower part of the push plate (5) is bent to form a bent part (501), and the bent part (501) is connected to a first bolt (6); A left transverse plug plate (7) and a right transverse plug plate (8) are installed in the drawer body (1); plug plates (801) corresponding to the bayonet (3) are formed at the outer ends of the left transverse plug plate (7) and the right transverse plug plate (8); through holes (701) for the first bolt (6) to pass through are formed at the inner ends of the left transverse plug plate (7) and the right transverse plug plate (8); the through holes (701) are formed with guide inclined surfaces (702); when the push plate (5) moves forward, the first bolt (6) presses the guide inclined surfaces (702) to make the left transverse plug plate (7) and the right transverse plug plate (8) slide inward, so that the plug plates (801) are separated from the bayonet (3); the left transverse plug plate (7) and the right transverse plug plate (8) are both connected to first return springs (9); A connecting plate (19) is installed at the top of the front end of the drawer body (1); a long hole (23) is formed on the connecting plate (19); a limiting bolt (24) fixedly connected to the drawer body (1) is inserted into the long hole (23); the limiting bolt (24) pre-tightens and fixes the connecting plate (19); the connecting plate (19) is connected to a secondary connector (22); and a primary connector (25) is installed at the lower part of the drawer body (1).

2. The low-voltage switch drawer interlocking mechanism according to claim 1, characterized in that: The drawer body (1) is connected to a guide plate (10), and a guide hole (101) is formed on the guide plate (10) for the left transverse plug plate (7) and the right transverse plug plate (8) to pass through; a U-shaped notch (102) is formed on the left transverse plug plate (7) and the right transverse plug plate (8), and a spring sleeve rod (103) is formed in the middle of the U-shaped notch (102); a first return spring (9) is sleeved on the spring sleeve rod (103) and presses the guide plate (10).

3. The low-voltage switch drawer interlocking mechanism according to claim 1, characterized in that: A slope (201) corresponding to the test position is formed in the middle of the guide plate (2); a vertical slide groove (104) is formed on the side of the drawer body (1), and the vertical slide groove (104) is connected to a slide plate (106) through a sliding bolt (105), and a roller (107) is installed on the slide plate (106) to press on the upper surface of the guide plate (2); the slide plate (106) is connected to a compression spring (1061) installed on the drawer body (1); and a first limiting hole (191) that cooperates with the sliding bolt (105) is formed on the connecting plate (19).

4. The low voltage switch drawer interlocking mechanism according to claim 1, characterized in that: The drawer body (1) is inserted into the cabinet body (11); a limit hook (13) is hingedly connected to the cabinet body (11), and an inclined guide surface (14) is formed at the lower part of the bottom end of the limit hook (13); and a limit plate (23) cooperating with the limit hook (13) is fixed to the connecting plate (19).

5. The low-voltage switch drawer interlocking mechanism according to claim 4, characterized in that: A U-shaped groove (108) is formed on the side of the drawer body (1), and a raised trapezoidal block (1081) is formed at the bottom of the U-shaped groove (108); the limiting hook (13) is connected to a second bolt (15) inserted into the U-shaped groove (108).

6. The low voltage switch drawer interlocking mechanism according to claim 4, characterized in that: The connecting plate (19) is connected to an L-shaped limiting plate (192), and a guide limiting hole (193) is formed at the bottom of the limiting plate (192). A locking plate (16) is inserted into the guide limiting hole (193), and the locking plate (16) is connected to a transverse plate (161). A V-shaped groove (17) is formed on the upper surface of the transverse plate (161) adjacent to the locking plate (16), and a third bolt (18) inserted into the V-shaped groove (17) is connected to the push plate (5); an insertion portion (162) is formed at the top of the locking plate (16); a plug hole (20) matched with the insertion portion (162) is formed on the connecting plate (19), and a limiting pin (26) matched with the insertion portion (162) is fixed on the drawer body (1); and a second return spring (21) is connected to the locking plate (16).

7. The low voltage switch drawer interlocking mechanism according to claim 6, characterized in that: The limiting plate (23) and the connecting plate (19) are integrally formed.

Images