A low-voltage switch drawer interlocking mechanism

Abstract

The present invention discloses a low-voltage switch drawer interlocking mechanism, comprising a drawer body, guide plates disposed on both sides of the drawer body, the guide plates forming bayonet holes corresponding to a separation position, a test position, and a connection position along the sliding direction of the drawer body; an unlocking button mounted on one side of the front end of the drawer body, the unlocking button connected to a push plate, the lower portion of the push plate being bent to form a bent portion, the bent portion being connected to a first bolt; a left transverse insert plate and a right transverse insert plate mounted within the drawer body; insert plates corresponding to the bayonet holes formed at the outer ends of the left and right transverse insert plates; through holes formed at the inner ends of the left and right transverse insert plates for the first bolt to pass through, the through holes being formed with guide slopes. The present invention overcomes the problem of existing switch drawers causing primary contacts to make unsmooth contact due to the swinging forward movement, and can quickly and accurately provide staff with feedback on the correct position of the test position.

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] The current 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 move the drawer forward and backward. It is easy to rock forward during use, which makes the primary contact not contacting smoothly. The mechanism is complex and difficult to maintain. In addition, when the existing switch drawers enter the separation position, test position and connection position, they are pushed to the actual position by manual observation, and usually require the attachment of position indicators or the installation of position sensors. However, setting the position indicator requires staff to observe, which makes the operation cumbersome. If the position sensor fails, it is difficult to indicate, resulting in position errors. Moreover, if the thrust is too large and too fast, it is easy to push 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] In order to solve the above problems, the technical solution of the present invention is:

[0005] A low-voltage switch drawer interlocking mechanism includes a drawer body, guide plates are provided 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 along the sliding direction of the drawer body; an unlocking button is installed on one side of the front end of the drawer body, and the unlocking button is connected to a push plate, the lower portion of the push plate is bent to form a bent portion, and the bent portion is connected to a first bolt;

[0006] A left transverse inserting plate and a right transverse inserting plate are installed in the drawer body; the outer ends of the left transverse inserting plate and the right transverse inserting plate are formed with inserting plates corresponding to the bayonet; the inner ends of the left transverse inserting plate and the right transverse inserting 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 presses the guide inclined surfaces to cause the left transverse inserting plate and the right transverse inserting plate to slide inward, so that the inserting plates are disengaged 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 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; the connecting plate is connected to a secondary connector; and 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 transverse insert plate and the right transverse insert plate to pass through; a U-shaped notch is formed on both the left transverse insert plate and the right transverse insert 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] As a further improvement, 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, and the vertical slide groove is connected to a slide plate through 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 limiting 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 body; a limit hook is hingedly connected to the cabinet body, and an inclined guide surface is formed at the lower part of the bottom end of the limit hook; and a limit plate that cooperates 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] A further improvement is that 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 horizontal plate. A V-shaped groove is formed on the upper surface of the horizontal plate adjacent to the locking plate, and a third bolt is connected to the push plate and inserted into the V-shaped groove; an insertion portion is formed on the top of the locking plate; a socket is formed on the connecting plate to cooperate with the insertion portion, and a limiting pin that cooperates with the insertion portion is fixed on the drawer body; the locking plate is connected to a second return spring

[0014] As a further improvement, the limiting plate and the connecting plate are formed integrally.

[0015] Advantages of the present invention:

[0016] 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.

[0017] 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 verification when using switch drawers and the risk of accidents.

[0018] 3. The interlocking structure can effectively prevent accidental contact with the connection position when in the test position.

[0019] 4. The interlocking mechanism keeps the state of the switch drawer consistent when it is inserted and removed, thereby preventing the secondary connector from being unable to be plugged into place when it is inserted for the second time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the overall structure of the drawer body;

[0021] Figure 2 It is the position structure diagram of the limit hook;

[0022] Figure 3 It is a structural diagram of the push plate;

[0023] Figure 4 Schematic diagram of the structure of the insertion part and the limit pin

[0024] Figure 5 Schematic diagram of the overall structure of the left transverse insert and the right transverse insert;

[0025] Figure 6 Detailed diagram of the left and right transverse inserts;

[0026] Figure 7 It is a structural diagram of the U-shaped groove. DETAILED DESCRIPTION

[0027] 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 are described clearly and completely below.

[0028] like Figure 1-Figure 7 The illustrated embodiment shows a low-voltage switch drawer interlocking mechanism comprising a drawer body 1, with first guide plates 2 provided on both sides of the drawer body 1. The first guide plates 2 form bayonet openings 3 corresponding to a separation position, a test position, and a connection position along the sliding direction of the drawer body 1; an unlocking button 4 is mounted on one side of the front end of the drawer body 1, and the unlocking button 4 is connected to a push plate 5. The lower portion 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;

[0029] A left transverse inserting plate 7 and a right transverse inserting plate 8 are installed in the drawer body 1; the outer ends of the left transverse inserting plate 7 and the right transverse inserting plate 8 are formed with an inserting plate 801 corresponding to the bayonet 3; the inner ends of the left transverse inserting plate 7 and the right transverse inserting plate 8 are formed with a through hole 701 for the first bolt 6 to pass through, and the through hole 701 is formed with a guide inclined surface 702. When the push plate 5 moves forward, the first bolt 6 presses the guide inclined surface 702 to cause the left transverse inserting plate 7 and the right transverse inserting plate 8 to slide inward, so that the inserting plate 801 is separated from the bayonet 3;

[0030] The left transverse insert plate 7 and the right transverse insert plate 8 are both connected to a first return spring 9;

[0031] 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 so that the left horizontal plug plate 7 and the right horizontal plug plate 8 both slide inward, and the plug plate 801 disengages 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 and enters the test position. Similarly, when entering the connection position, press the unlocking button 4 again to push. Since there are the first 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.

[0032] Among them, the drawer body 1 is connected to the second guide plate 10, and a guide hole 101 is formed on the second guide plate 10 for the left horizontal insertion plate 7 and the right horizontal insertion plate 8 to pass through; a U-shaped notch 102 is formed on the left horizontal insertion plate 7 and the right horizontal insertion plate 8, and a spring sleeve rod 103 is formed in the middle of the U-shaped notch 102. The first return spring 9 is sleeved on the spring sleeve rod 103 and squeezes the second guide plate 10.

[0033] A connecting plate 19 is installed at the top 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; 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.

[0034] 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 first 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 first 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 is formed on the connecting plate 19 to cooperate with the sliding bolt 105.

[0035] When roller 107 reaches ramp 201, it encounters resistance from the slope. Simultaneously, its upward movement requires squeezing compression spring 1061 to overcome this resistance. At this point, the operator pushing the low-voltage switch drawer will feel significant resistance, signaling that the test position is about to be reached and requiring the release of unlock button 4 to facilitate insertion of plug plate 801 into the second bayonet 3. When roller 107 fails to reach the top of ramp 201, sliding bolt 105 becomes lodged in first stopper hole 191, preventing connecting plate 19 from moving along slot 23. This ensures that secondary connector 22 can be properly inserted. Once secondary connector 22 is in place, the primary contacts are unplugged, allowing for testing.

[0036] To prevent the low-voltage switch drawer from accidentally touching or pushing it in the test position, causing it to move forward and causing a dangerous plugging of the primary contacts, the connecting plate 19 is connected to an L-shaped second limit plate 192, and a guide limit hole 193 is formed at the bottom of the second limit plate 192. The guide limit hole 193 is inserted into the locking plate 16, which is connected to the horizontal plate 161. A V-shaped groove 17 is formed on the upper surface of the horizontal plate 161 adjacent to the locking plate 16. The push plate 5 is connected to a third bolt 18 that inserts into the V-shaped groove 17; an insertion portion 162 is formed at the top of the locking plate 16; a socket 20 that cooperates with the insertion portion 162 is formed on the connecting plate 19, and a limit pin 26 that cooperates with the insertion portion 162 is fixed to the drawer body 1; and a second return spring 21 is connected to the locking plate 16.

[0037] 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 return spring 21, allowing the insertion portion 162 to insert into the socket 20. The insertion portion 162 blocks the forward movement of the limit pin 26, thereby blocking the forward movement of the drawer body 1, 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 forward, squeezing the cross plate 161, thereby causing the insertion portion 162 to move downward. At this time, the push is further forward. Since the secondary connector 22 is already plugged in and forms resistance, the limit bolt 24 moves along the elongated hole 23 during the forward movement until the primary contact is plugged in, i.e., the connection position is reached.

[0038] To ensure that the low-voltage switch drawer remains in the same state as when the drawer body 1 is removed after reaching the connected position, 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 lower end of the limit hook 13; a first limit plate 203 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; a second bolt 15 that is inserted into the U-shaped groove 108 is connected to the limit hook 13.

[0039] In this way, when reaching the connection position, the first limit plate 203 pushes the inclined guide surface 14 to make the limit hook 13 swing upward. When reaching the connection position, the first limit plate 203 passes through the area of ​​the inclined guide surface 14, and the limit hook 13 swings downward under gravity and hooks the first limit plate 203.

[0040] Once the drawer body 1 is in the connected position, the unlock button 4 is pressed and pulled outward. As the retaining hook 13 hooks onto the first retaining plate 203, the retaining hook 13 slides along the slot 23 where the retaining bolt 24 is inserted, until the retaining plate 203 returns to the position before the test position. As the drawer body 1 is pulled out further, the second bolt 15 reaches the position of the trapezoidal block 1081. The trapezoidal block 1081 pushes the second bolt 15 upward, causing the retaining hook 13 to swing upward and disengage from the first retaining plate 203, allowing the drawer body 1 to be pulled out smoothly while maintaining the consistent positions of the components during pullout and insertion. The first retaining plate 203 is integrally formed with the connecting plate 19.

[0041] 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 scope of protection of the present invention.

Claims

1. A low voltage switch drawer interlocking mechanism, characterized in that: The invention comprises a drawer body (1), wherein first guide plates (2) are provided on both sides of the drawer body (1), and the first 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), 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); A left transverse insert plate (7) and a right transverse insert plate (8) are installed in the drawer body (1); the outer ends of the left transverse insert plate (7) and the right transverse insert plate (8) are formed with insert plates (801) corresponding to the bayonet (3); the inner ends of the left transverse insert plate (7) and the right transverse insert plate (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) presses the guide inclined surfaces (702) to make the left transverse insert plate (7) and the right transverse insert plate (8) slide inward, so that the insert plates (801) are separated from the bayonet (3); The left transverse insert plate (7) and the right transverse insert plate (8) are both connected to a first return spring (9); 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), and 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 second guide plate (10), and a guide hole (101) is formed on the second guide plate (10) for the left transverse inserting plate (7) and the right transverse inserting plate (8) to pass through; a U-shaped notch (102) is formed on both the left transverse inserting plate (7) and the right transverse inserting plate (8), and a spring sleeve rod (103) is formed in the middle of the U-shaped notch (102). The first return spring (9) is sleeved on the spring sleeve rod (103) and presses the second 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 first 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) and pressed on the upper surface of the first 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) is formed on the connecting plate (19) and is matched with the sliding bolt (105).

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 end of the limit hook (13); and a first limit plate (203) that cooperates 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 second limiting plate (192), a guide limiting hole (193) is formed at the bottom of the second limiting plate (192), a locking plate (16) is inserted into the guide limiting hole (193), 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 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 locking plate (16); a socket (20) is formed on the connecting plate (19) and is matched with the insertion portion (162); a limiting pin (26) is fixed on the drawer body (1); and the locking plate (16) is connected to a second return spring (21).

7. The low-voltage switch drawer interlocking mechanism according to claim 6, characterized in that: The first limiting plate (203) and the connecting plate (19) are integrally formed.

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