Drawer seat unlocking structure

Abstract

The application discloses a drawer seat unlocking structure, which comprises a base, a screw rod, a rotating piece, a position rod and a locking button. A locking piece spring is arranged between the locking button and the base. The locking button can move between a first button position and a second button position. When the locking button moves to the first button position, the locking button is locked with the rotating piece and the locking with the screw rod is released. The screw rod can drive the position rod to move. The movement of the position rod can trigger the rotating piece to rotate and release the locking with the locking button. The locking piece spring acts on the locking button. After the rotating piece releases the locking with the locking button, the locking piece spring drives the locking button to lock with the screw rod and moves to the second button position. The locking and unlocking of the screw rod are realized by the screw rod, the position rod, the button, the rotating piece and the locking piece, the locking and unlocking of the circuit breaker body are realized, and the safety and reliability are improved.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical technology, specifically to a drawer seat unlocking structure. Background Technology

[0002] Drawer-type circuit breakers are widely used in power distribution systems due to their ease of inspection and maintenance. A drawer-type circuit breaker consists of two parts: the circuit breaker body and the drawer base. The drawer base connects to the external power supply, and the circuit breaker body can be moved in or out of the drawer base. The circuit breaker can move within the body to three positions: open, test, and closed. When inspection or maintenance is required, simply pull out the circuit breaker body; there is no need to remove the drawer base. In all three positions (open, test, closed), the circuit breaker body should be in the locked position to prevent unnecessary damage and accidents, protecting personnel and equipment safety. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a drawer unlocking structure that reduces the number of parts and improves reliability.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A drawer seat unlocking structure includes a base, a lead screw rotatably mounted on the base, a rotating component, a position lever, and a locking button movably mounted on the base. A locking spring is provided between the locking button and the base. The locking button is movable between a first button position and a second button position. When the locking button moves to the first button position, it engages with the rotating component and releases its engagement with the lead screw. The lead screw is driven by the position lever; rotation of the lead screw moves the position lever, which triggers rotation of the rotating component to release its engagement with the locking button. The locking spring acts on the locking button. After the rotating component releases its engagement with the locking button, the locking spring drives the locking button to engage with the lead screw and moves the locking button to the second button position.

[0006] Preferably, the rotating component is rotatably mounted on the lead screw. One end of the rotating component is a position rod engagement end that engages with the position rod, and the other end is a button engagement end that engages with the locking button latch. A rotating component spring for resetting is provided between the button engagement end of the rotating component and the base. The position rod can touch the position rod engagement end of the rotating component, and the position rod engagement end and the button engagement end of the rotating component swing in opposite directions.

[0007] Preferably, the position rod includes a position rod body, a test sliding assembly, and a conductive sliding assembly. Both the test sliding assembly and the conductive sliding assembly include a slider protruding from the position rod body, a guide portion on the position rod body, and two stop portions located at both ends of the guide portion. The distance between the two stop portions of the conductive sliding assembly is greater than the distance between the two stop portions of the test sliding assembly. The guiding direction of the guide portion is consistent with the length direction of the position rod body. The guide portion slides with the slider, and the slider cooperates with the rotating component.

[0008] Preferably, the position rod body is provided with a limiting groove, the two end sidewalls of the limiting groove are the stop portions, and the guide portion is a protrusion arranged around the sidewall of the limiting groove; one end of the slider is provided with a sliding flange that slides with the guide portion, and the other end is a trigger protrusion. The sliding flange of the slider is fastened to the guide portion, and the trigger protrusion extends out of the limiting groove and cooperates with the rotating component.

[0009] Preferably, the limiting groove is a through groove, with the slider installed at one end and a cover plate installed at the other end, so that the sliding flange of the slider is limited between the guide part of the position rod body and the cover plate.

[0010] Preferably, the lead screw is provided with a locking part that can cooperate with the locking button latch, and the locking part of the lead screw is a disc with multiple locking holes.

[0011] Preferably, the locking button includes a locking element and a button that are linked together. The locking element spring acts on the locking element or the button. When the button moves to the first button position, it engages with the rotating element and drives the locking element to release its locking engagement with the lead screw. After the rotating element releases its locking engagement with the button, the locking element spring drives the locking element to lock with the lead screw and drives the button to move to the first button position.

[0012] Preferably, the button has a linkage protrusion; the locking component includes a guide plate, a linkage plate and a locking plate, one end of the linkage plate is connected to the guide plate and the other end can abut against the linkage protrusion of the button, one end of the locking plate is connected to the guide plate and can be inserted into the locking hole of the locking part, and the other end is provided with a first hanging hole; one end of the locking spring is hung in the second hanging hole of the base and the other end is hung in the first hanging hole.

[0013] Preferably, one end of the button is an operating end, and the other end is provided with a locking hole and an overlapping notch in sequence. The button mating end of the rotating component is provided with a locking protrusion that mates with the locking hole and the overlapping notch. When the locking protrusion of the rotating component rests on the overlapping notch of the button, the button is in a movable state. When the locking protrusion of the rotating component is engaged in the locking hole of the button, the button is in a locked state.

[0014] Preferably, the button and locking component are mounted on the base frame of the base. The base frame includes a guide shaft, a vertically connected base plate and upright plate, and a matching screw and bushing. One end of the guide shaft is fixedly connected to the base plate, and the other end extends into the guide groove of the button. The guide plate has an oblong guide hole. The screw is fixed to the upright plate, and the bushing is fitted onto the screw rod and passes through the guide hole on the guide plate. The bushing can slide along the length of the guide hole.

[0015] Preferably, the lead screw is driven to the position rod via a transmission plate. Rotation of the lead screw can drive the transmission plate to move, and the transmission plate can drive the position rod to move.

[0016] Preferably, the lead screw, position lever, and locking button are arranged in parallel, with the lead screw located between the position lever and the button. The base is provided with a mounting plate, a drive shaft, and a support plate located between the mounting plate and the drive shaft. The lead screw passes through the mounting plate and support plate of the base and is rotatably mounted on the mounting plate and support plate of the base. The position lever and the button pass through the mounting plate and support plate of the base and are movably mounted on the mounting plate and support plate of the base. A drive plate is provided between the support plate and the drive shaft. One end of the drive plate is driven and linked to the lead screw and the position lever. The drive shaft is rotatably mounted on the base, and a drive gear is fixedly mounted on the drive shaft. The drive gear is engaged with the meshing port on the other end of the drive plate.

[0017] The drawer unlocking structure created by this invention can lock and unlock the lead screw by means of a lead screw, a position lever, a rotating component and a locking button, thereby locking and unlocking the circuit breaker body. The structure is simple, can reduce the number of parts and improve safety and reliability.

[0018] In addition, two sets of slider sliding components that can slide along the length of the position rod are set up. In the test position and the conducting position, the slider triggers the rotating part to rotate and lock, so that the circuit breaker can be locked more accurately at the required locking position during the pushing and pulling process. When in the conducting position, locking is required when pushing, but not when pulling, which greatly increases the safety performance of the circuit breaker. Attached Figure Description

[0019] Figure 1 This is a perspective view of the drawer unlocking structure created by this invention;

[0020] Figure 2 This is a partial three-dimensional view of the drawer unlocking structure created in this invention;

[0021] Figure 3 This is a perspective view of the lead screw, transmission plate, position rod, and rotating component of this invention;

[0022] Figure 4 This is a schematic diagram of the sliding trajectory of the position lever slider created in this invention;

[0023] Figure 5 This is a schematic diagram of the structure of the position rod created in this invention;

[0024] Figure 6 This is a schematic diagram of the structure of the position rod body created by the present invention;

[0025] Figure 7 This is a schematic diagram of the slider structure created in this invention;

[0026] Figure 8 This is a schematic diagram of the structure of the cover plate created in this invention;

[0027] Figure 9 This is a schematic diagram of the structure of the base frame and locking component of this invention;

[0028] Figure 10 This is a schematic diagram of the structure of the base frame of this invention;

[0029] Figure 11 This is a schematic diagram of the structure of the locking component created in this invention;

[0030] Figure 12 This is a schematic diagram of the structure of the button created in this invention;

[0031] Figure 13 This is a schematic diagram of the rotating component created in this invention. Detailed Implementation

[0032] The following is in conjunction with the appendix Figures 1 to 13 The given embodiments further illustrate specific implementations of the drawer unlocking structure created by the present invention. The drawer unlocking structure created by the present invention is not limited to the descriptions of the following embodiments.

[0033] like Figure 1As shown in Figure 3, the drawer seat unlocking structure of this invention includes a base 1, a lead screw 3 rotatably mounted on the base 1, a rotating component 5, a position lever 6, and a locking button movably mounted on the base 1. The rotation of the lead screw 3 drives the drawer seat to move. A locking spring 9 is provided between the locking button and the base 1. The locking button can move between a first button position and a second button position. When the locking button moves to the first button position, it engages with the rotating component 5 and releases the locking engagement with the lead screw 3. At this time, the lead screw 3 can rotate, meaning the drawer seat can be moved. The lead screw 3 is driven to the position lever 6. The rotation of the lead screw 3 can drive the position lever 6 to move. The movement of the position lever 6 can trigger the rotating component 5 to rotate and release the locking engagement with the locking button. The locking spring 9 acts on the locking button. After the rotating component 5 releases the locking engagement with the locking button, the locking spring 9 drives the locking button to engage with the lead screw 3 and drives the locking button to move to the second button position. At this time, the lead screw 3 is locked by the locking button and cannot rotate, meaning the drawer seat cannot be moved.

[0034] like Figure 1 As shown in Figure 3, in the drawer seat unlocking structure of this embodiment, the locking button includes a locking member 7 and a button 8, wherein the button 8 is linked to the locking member 7, the button 8 can move between a first button position and a second button position, the button 8 can engage with the rotating member 5, the locking member 7 can engage with the lead screw 3, the locking member spring 9 acts on the locking member 7 or the button 8, the locking member spring 9 is used to drive the locking member 7 to engage with the lead screw 3, when the button 8 moves to the first button position, it engages with the rotating member 5, and drives the locking member 7 to release the engagement with the lead screw 3, after the rotating member 5 releases the engagement with the button 8, the locking member spring 9 is used to drive the locking member 7 to engage with the lead screw 3, and drives the button 8 to move to the first button position. The lead screw 3 is provided with a locking part 30 that can be locked with the locking member 7. The rotating member 5 is rotatably mounted on the lead screw 3. One end of the rotating member 5 is a position rod engagement end 503 that engages with the position rod 6, and the other end is a button engagement end that engages with the button 8. A rotating member spring 11 for resetting is provided between the button engagement end of the rotating member 5 and the base 1. The lead screw 3 is driven to connect with the position rod 6 through a transmission plate 4. The rotation of the lead screw 3 can drive the transmission plate 4 to move, and the transmission plate 4 can drive the position rod 6 to move. The position rod 6 can touch the position rod engagement end 503 of the rotating member 5, and the position rod engagement end 503 and the button engagement end 503 of the rotating member 5 swing in opposite directions.

[0035] like Figure 1As shown, the circuit breaker body is in the open position, the button engagement end of the rotating part 5 does not lock the button 8, the rotating part spring 11 is in the stretched state, and the locking part spring 9 is in the reset state. At this time, the locking part 7 is locked with the locking part 30 on the screw 3, thereby locking the screw 3. At this time, it cannot be rotated, that is, the drawer seat cannot be moved and is locked in the open position.

[0036] When button 8 is pressed, that is, when button 8 moves to the first position, the locking spring 9 is in a stretched state. Button 8 pushes the locking member 7, so that the locking member 7 and the locking part 30 on the screw 3 are unlocked and can be rotated. At the same time, under the action of the rotating member spring 11, the button mating end of the rotating member 5 and button 8 are locked together. At this time, the screw 3 is unlocked and can be moved to the test position.

[0037] When the lead screw 3 rotates, it drives the position lever 6 to move. When the position lever 6 continues to move to the corresponding test position, it will trigger the position lever mating end 503 of the rotating part 5. The rotating part 5 will then rotate, and the button mating end of the rotating part 5 will be unlocked from the button 8. The locking spring 9 will reset and pull the locking part 7 to move. At this time, the locking part 7 and the locking part 30 on the lead screw 3 will lock together. At the same time, the movement of the locking part 7 will cause the button 8 to move and pop out to complete the reset, that is, the button 8 will move to the second button position. At this time, the lead screw 3 is locked and cannot rotate, and the drawer seat is locked in the test position.

[0038] Press button 8 again, and button 8 moves to the first position, causing locking member 7 to release its locking engagement with lead screw 3. At this time, rotating lead screw 3 can drive the drawer seat to move to the open or closed position. When it moves to the open or closed position, position lever 6 drives rotating member 5 to release its locking engagement with button 8, locking member spring 9 drives locking member 7 to lock lead screw 3, and button 8 resets. The operation process is similar and will not be described again.

[0039] Clearly, the lead screw 3 and the position lever 6, and the button 8 and the locking element 7, can be driven directly or indirectly. The locking element spring 9 can be a single elastic element driving both the locking element 7 and the button 8 simultaneously, or it can be two or more elements driving the locking element 7 and the button 8 separately. The locking button can be integrally formed as a single part or separated into two independent parts. In this embodiment, the locking button is assembled from two independent parts, the locking element 7 and the button 8, which facilitates assembly, reduces manufacturing costs, and saves on production costs. It should be noted that the lead screw's ability to convert rotary motion into linear motion is existing technology.

[0040] The drawer unlocking structure created by this invention can lock and unlock the lead screw by means of a lead screw, a position lever, a rotating component and a locking button, thereby locking and unlocking the circuit breaker body. The structure is simple, can reduce the number of parts and improve safety and reliability.

[0041] like Figure 4 As shown in Figure 6, the position rod 6 of this invention includes a position rod body 60, a test sliding assembly and a conductive sliding assembly arranged sequentially along the length of the position rod body 60. The test sliding assembly and the conductive sliding assembly have the same structure, both including a slider 64 protruding from the position rod body 60, a guide portion 604 on the position rod body 60, and two stop portions 602 located at both ends of the guide portion 604. The difference lies only in that the stroke of the slider 64 in the conductive sliding assembly is greater than that in the test sliding assembly, that is, the distance between the two stop portions 602 in the guide sliding assembly is greater than the distance between the two stop portions 602 in the test sliding assembly. The guiding direction of the guide portion 604 is consistent with the length direction of the position rod body 60. The guide portion 604 slides with the slider 64, and the slider 64 engages with the rotating member 5. When the slider 64 of the test sliding assembly abuts against the stop portions 602, as shown... Figure 4 At points A and B shown, when the slider 64 of the conductive sliding assembly abuts against the stop 602, as shown... Figure 4 Points C and E are shown. (As shown...) Figure 3 As shown, under the downward pulling force of the rotating spring 11, the mating end 503 of the position rod is close to the bottom surface of the position rod body 60. When the transmission plate 4 moves to the left, it synchronously drives the position rod body 60 to move relative to the rotating component 5. The slider 64 of the test sliding assembly moves from point A to point B relative to the position rod body 60. Figure 4 As shown, the slider 64 of the test sliding assembly is stationary relative to the rotating member 5. The position rod body 60 continues to move, and the slider 64 of the test sliding assembly reaches the limit position B. At this point, the slider 64 of the test sliding assembly will move with the position rod body 60, thus completing the rotational locking of the rotating member 5. After unlocking, the transmission plate 4 continues to drive the position rod body 60 to move, and the slider 64 of the conduction sliding assembly contacts the position rod mating end 503. The position rod body 60 continues to move, and the slider 64 of the conduction sliding assembly remains stationary relative to the rotating member 5. When it reaches the limit position E, the slider 64 of the conduction sliding assembly will move with the position rod body 60, thus locking the rotation of the rotating member 5. Two sets of slider sliding assemblies that can slide along the length of the position rod are provided. In the test position and the conduction position, the slider triggers the rotational locking of the rotating member, allowing the circuit breaker to lock more precisely at the required locking position during the pushing and pulling processes. In the conduction position, locking is required during pushing, but not during pulling, greatly increasing the safety performance of the circuit breaker.

[0042] Specifically, such as Figure 6As shown in Figure 7, the position rod body 60 is provided with a limiting groove 603. The two end sidewalls of the limiting groove 603 are the stop portions 602, and the guide portion 604 is a protrusion surrounding the sidewall of the limiting groove 603. One end of the slider 64 is provided with a sliding flange 641 that slides with the guide portion 604, and the other end is a trigger protrusion 642. The sliding flange 641 of the slider 64 is fastened to the guide portion 604, and the trigger protrusion 642 extends out of the limiting groove 603 and cooperates with the position rod mating end 503 of the rotating member 5. The lengths of the two limiting grooves 603 of the position rod 6 are adjusted according to the movement distance of the lead screw 3. The sliding fit structure between the position rod body and the slider is simple, the slider sliding action is smooth and reliable, and the reliability of the product is improved. Preferably, the limiting groove 603 is a through groove, with the slider 64 installed at one end and a cover plate 62 installed at the other end, so that the sliding flange 641 of the slider 64 is limited between the guide portion 604 of the position rod body 60 and the cover plate 62. The main purpose of the cover plate is to prevent the slider from falling out from one side or deviating from its position during sliding. Specifically, as shown in the example... Figure 8 As shown, the cover plate 62 has four overlapping blocks 622 distributed at the four corners, which cooperate with two overlapping notches 606 provided on the end face of the position rod body 60; the cover plate 62 has two locking protrusions 621 located on both sides, and the limiting groove 603 of the position rod body 60 has locking holes 606 on both sides of the side wall, which cooperate with the locking protrusions 621.

[0043] like Figure 1 As shown in Figure 3, preferably, the locking part 30 of the lead screw 3 is a disc with multiple locking holes 301, similar to a gear.

[0044] like Figure 1 As shown in Figure 2, button 8 and locking element 7 are mounted on the base frame 14 of base 1, and the base frame 14 guides button 8 and locking element 7. Figure 12 As shown, one end of the button 8 is the operating end, and the other end is provided with a guide groove 804, a linkage protrusion 801 protruding to one side, a locking hole 802, and an overlapping notch 803 in sequence. Figure 9As shown in Figure 11, the base frame 14 includes a guide shaft 144, a vertically connected base plate 141 and upright plate 142, a cooperating screw 145 and a bushing 146. One end of the guide shaft 144 is fixedly connected to the base plate 141 by a shaft hole insertion method, and the other end extends into the guide groove 804 of the button 8. The guide shaft 144 of the base 1 cooperates with the guide groove 804 of the button 8 to limit and guide the movement of the button 8. The locking component 7 includes a guide plate 700, a linkage plate 703 and a locking plate 704. The guide plate 700 is provided with an oblong guide hole 702. The screw 145 is fixed on the upright plate 142. The bushing 146 is sleeved on the screw shank of the screw 145 and passes through the guide hole 702 on the guide plate 700. The bushing 146 can slide along the length direction of the guide hole 702, so that the locking component 7 can slide horizontally relative to the bushing. The guide plate 700 is located between the upright plate 142 and the nut of the screw 145. One end of the linkage plate 703 of the locking member 7 is vertically connected to the top of the guide plate 700, and the other end can abut against the linkage protrusion 801 of the button 8 to realize the linkage connection between the button 8 and the locking member 7. The locking plate 704 is an L-shaped plate, one side of which is vertically connected to the top of the guide plate 700, and the other side can be inserted into the locking hole 301 of the locking part 30, so that the lead screw 3 is locked and cannot be rotated. The other plate of the locking plate 704 is provided with a first hanging hole 701; one end of the locking member spring 9 is hung in the second hanging hole 101 of the base 1, and the other end is hung in the first hanging hole 701. The locking structure between the locking member and the locking part of the lead screw is simple and reliable.

[0045] like Figure 13 As shown, the button-fitting end of the rotating component 5 is provided with a locking protrusion 501 that mates with the locking hole 802 and the overlapping notch 803, as shown. Figure 1 As shown in Figure 2, the overlapping notch 803 is an arc-shaped groove. When the locking protrusion 501 of the rotating component 5 rests within the overlapping notch 803 of the button 8, the button 8 is in a movable state; when the locking protrusion 501 of the rotating component 5 engages within the locking hole 802 of the button 8, the button 8 is in a locked state. The locking structure between the button and the rotating component is simple and reliable. Furthermore, as... Figure 1 As shown in Figure 3, the rotating spring 11 is connected between the button mating end of the rotating component 5 and the base frame 14 of the base 1. One end of the rotating spring 11 is hung in the third hanging hole 504 of the rotating component 5, and the other end is hung in the fourth hanging hole 143 of the base frame 14.

[0046] Specifically, such as Figure 1As shown in Figure 2, the lead screw 3, position lever 6, and button 8 are arranged in parallel, with the lead screw 3 located between the position lever 6 and the button 8. The base 1 is provided with a mounting plate 16, a drive shaft 2, and a support plate 12 located between the mounting plate 16 and the drive shaft 2. The lead screw 3 passes through the mounting plate 16 and the support plate 12 of the base 1 and is rotatably mounted on the mounting plate 16 and the support plate 12 of the base 1, allowing it to rotate freely relative to the mounting plate 16 and the support plate 12. The position lever 6 and the button 8 pass through the mounting plate 16 and the support plate 12 of the base 1 and are movably mounted on the mounting plate 16 and the support plate 12 of the base 1. The transmission plate 4 is located between the support plate 12 and the transmission shaft 2. One end of the transmission plate 4 is driven and connected to the lead screw 3 and linked with the position rod 6. The transmission plate 4 is provided with two mating nuts 17. The transmission plate 4 is connected to the lead screw 3 through the mating nuts 17. One end of the position rod 6 passes through the transmission plate 4 and is provided with a buckle 601 to fasten the transmission plate 4, thereby realizing the linkage connection with the transmission plate 4. The transmission shaft 2 is rotatably mounted on the base 1, and a transmission gear 201 is fixedly mounted on the transmission shaft 2. The transmission gear 201 is meshed with the meshing port 401 on the other end of the transmission plate 4.

[0047] like Figure 1 As shown in Figure 2, a pressure plate 10 is provided on the base 1. The pressure plate 10 has a U-shaped structure and is inverted between the mounting plate 16 and the support plate 12. The position rod 6, the lead screw 3, and the button 8 all pass through the opening of the U-shaped pressure plate 10. The position rod 6, the lead screw 3, and the button 8 are constrained within the opening of the pressure plate 10. The rotating component 5 is located between the pressure plate 10 and the support plate 12. The pressure plate 10 and the support plate 12 jointly limit the rotation of the rotating component 5.

[0048] The working principle of the drawer base locking and unlocking structure created in this invention, the locking and unlocking process: as follows Figure 1As shown in Figure 3, the circuit breaker body is in the open position. At this time, the locking protrusion 501 of the rotating part 5 rests on the overlapping notch 803 of the button 8. The rotating part spring 11, which forms a surface contact with the button mating end of the rotating part 5, is in a stretched state, and the locking part spring 9 is in a reset state. At this time, the locking plate 704 of the locking part 7 is inserted into the locking port 301 to lock the locking part 30 and then lock the lead screw 3. The lead screw 3 cannot rotate. At this time, the transmission plate 4 cannot move, and the transmission gear 201 on the transmission shaft 2 cannot rotate, that is, the transmission shaft 2 cannot rotate to transmit power outward. When button 8 is pressed, the locking spring 9 is stretched, and the linkage protrusion 801 of button 8 pushes the locking member 7 to move, causing the locking plate 704 of the locking member 7 to exit the locking port 301. At this time, the lead screw 3 is unlocked and can rotate. The rotation of the lead screw 3 drives the transmission plate 4 to move, and the transmission plate 4 drives the gear 201, which in turn drives the transmission shaft 2 to transmit motion outward. At the same time, because button 8 moves, the locking protrusion 501 of the rotating member 5 leaves the overlapping notch 803, and under the action of the rotating member spring 11, the locking protrusion 501 enters the locking hole 802, locking button 8. Even under the action of the locking spring 9, the locking member 7 and button 8 cannot be reset. In short, when unlocked, that is, when the lead screw 3 is not locked, the locking protrusion 501 is located in the locking hole 802; when locked, that is, when the lead screw 3 is locked, the locking protrusion 501 is in the overlapping notch 803.

[0049] like Figure 4 As shown, relative to the position lever body 60, when the slider 64 of the test sliding assembly moves from point A to point B, the drawer seat state changes to "disconnected" – "test" (relative to the position lever body 60, when the slider 64 of the test sliding assembly moves from point B to point A, the drawer seat state changes to "test-disconnected"); simultaneously, relative to the position lever body 60, the slider 64 of the conduction sliding assembly moves from point C to point D. Relative to the position lever body 60, when the slider 64 of the test sliding assembly moves from point D to point E, the drawer seat state changes to "test-conducted" (relative to the position lever body 60, when the slider 64 of the conduction sliding assembly moves from point E to point D, the drawer seat state changes to "conducted-test"); simultaneously, relative to the position lever body 60, the slider 64 of the test sliding assembly remains stationary at point B.

[0050] Unlocking to locking process: When the drawer seat changes from disconnected to test, the position rod mating end 503 of the rotating part 5 is close to the position rod body 60, the screw 3 rotates, driving the transmission plate 4 to move, and driving the position rod 6 to move. At this time, the position rod mating end 503 blocks the slider 64 of the test sliding assembly, so that the slider 64 of the test sliding assembly moves to point B relative to the position rod body 60 and is pushed by the stop part 62 at point B. Thus, the trigger protrusion 642 of the slider 64 of the test sliding assembly presses down the position rod mating end 503, the rotating part 5 will rotate, the locking protrusion 501 will lift up and leave the locking hole 802 of the button 8, the locking spring 9 will pull the locking part 7 to reset, so that the locking plate 704 of the locking part 7 will enter the locking port 301. At this time, the screw 3 cannot rotate, the movement of the locking part 7 drives the button 8 to pop out, so that the locking protrusion 501 of the rotating part 5 stops in the overlapping notch 803 of the button 8;

[0051] When the drawer seat changes from test to conduction, the position rod mating end 503 of the rotating part 5 is close to the position rod body 60 and located between the slider 64 of the test sliding assembly and the conduction sliding assembly. The screw 3 rotates, causing the transmission plate 4 to move horizontally, which in turn causes the position rod 6 to move. At this time, the position rod mating end 503 blocks the slider 64 of the conduction sliding assembly, so that the slider 64 of the conduction sliding assembly moves to point E relative to the position rod body 60 and is pushed by the stop part 62 at point E. As a result, the trigger protrusion 642 of the conduction sliding assembly slider 64 presses down the position rod mating end 503, and the rotating part 5 will rotate. The locking protrusion 501 will lift up and leave the locking hole 802 of the button 8. The locking spring 9 will pull the locking part 7 to reset, so that the locking plate 704 of the locking part 7 will enter the locking port 301. At this time, the screw 3 cannot rotate. The movement of the locking part 7 causes the button 8 to pop out, so that the locking protrusion 501 of the rotating part 5 stops in the overlapping notch 803 of the button 8.

[0052] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the inventive concept, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A drawer seat unlocking structure, characterized in that: The device includes a base (1), a lead screw (3) rotatably mounted on the base (1), a rotating part (5), a position rod (6), and a locking button movably mounted on the base (1). A locking spring (9) is provided between the locking button and the base (1). The locking button can move between a first button position and a second button position. When the locking button moves to the first button position, it engages with the rotating part (5) and releases the locking engagement with the lead screw (3). The lead screw (3) is driven to connect with the position rod (6). The rotation of the lead screw (3) can drive the position rod (6) to move. The movement of the position rod (6) can trigger the rotation of the rotating part (5) to release the locking engagement with the locking button. The locking spring (9) acts on the locking button. After the rotating part (5) releases the locking engagement with the locking button, the locking spring (9) is used to drive the locking button to engage with the lead screw (3) and drive the locking button to move to the second button position. The position rod (6) includes a position rod body (60), a test sliding assembly, and a conductive sliding assembly. Both the test sliding assembly and the conductive sliding assembly include a slider (64) protruding from the position rod body (60), a guide portion (604) on the position rod body (60), and two stop portions (602) located at both ends of the guide portion (604). The distance between the two stop portions (602) of the conductive sliding assembly is greater than the distance between the two stop portions (602) of the test sliding assembly. The guiding direction of the guide portion (604) is consistent with the length direction of the position rod body (60). The guide portion (604) slides with the slider (64), and the slider (64) cooperates with the rotating member (5).

2. The drawer seat unlocking structure according to claim 1, characterized in that: The rotating part (5) is rotatably mounted on the lead screw (3). One end of the rotating part (5) is a position rod engagement end (503) that cooperates with the position rod (6), and the other end is a button engagement end that can cooperate with the locking button latch. A rotating part spring (11) for resetting is provided between the button engagement end of the rotating part (5) and the base (1). The position rod (6) can touch the position rod engagement end (503) of the rotating part (5), and the position rod engagement end (503) and the button engagement end of the rotating part (5) swing in opposite directions.

3. The drawer seat unlocking structure according to claim 1, characterized in that: The position rod body (60) is provided with a limiting groove (603), the two end side walls of the limiting groove (603) are the stop part (602), and the guide part (604) is a protrusion provided around the side wall of the limiting groove (603); one end of the slider (64) is provided with a sliding flange (641) that slides with the guide part (604), and the other end is a trigger protrusion (642). The sliding flange (641) of the slider (64) is fastened to the guide part (604), and the trigger protrusion (642) extends out of the limiting groove (603) and cooperates with the rotating part (5).

4. The drawer seat unlocking structure according to claim 3, characterized in that: The limiting groove (603) is a through groove, with the slider (64) installed at one end and the cover plate (62) installed at the other end, so that the sliding flange (641) of the slider (64) is limited between the guide part (604) of the position rod body (60) and the cover plate (62).

5. The drawer seat unlocking structure according to claim 1, characterized in that: The lead screw (3) is provided with a locking part (30) that can cooperate with the locking button latch. The locking part (30) of the lead screw (3) is a disc with multiple locking holes (301).

6. The drawer seat unlocking structure according to claim 1, characterized in that: The locking button includes a locking element (7) and a button (8) that are linked together. The locking element spring (9) acts on the locking element (7) or the button (8). When the button (8) moves to the first button position, it engages with the rotating element (5) and drives the locking element (7) to release its locking engagement with the screw (3). After the rotating element (5) releases its locking engagement with the button (8), the locking element spring (9) drives the locking element (7) to engage with the screw (3) and drives the button (8) to move to the first button position.

7. The drawer unlocking structure according to claim 6, characterized in that: The button (8) is provided with a linkage protrusion (801); the locking component (7) includes a guide plate (700), a linkage plate (703) and a locking plate (704). One end of the linkage plate (703) is connected to the guide plate (700), and the other end can abut against the linkage protrusion (801) of the button (8). One end of the locking plate (704) is connected to the guide plate (700) and can be inserted into the locking port (301) of the locking part (30). The other end is provided with a first hanging hole (701); one end of the locking spring (9) is hung in the second hanging hole (101) of the base (1), and the other end is hung in the first hanging hole (701).

8. The drawer seat unlocking structure according to claim 6, characterized in that: One end of the button (8) is the operating end, and the other end is provided with a locking hole (802) and an overlapping notch (803) in sequence. The button mating end of the rotating part (5) is provided with a locking protrusion (501) that mates with the locking hole (802) and the overlapping notch (803). When the locking protrusion (501) of the rotating part (5) rests in the overlapping notch (803) of the button (8), the button (8) is in a movable state. When the locking protrusion (501) of the rotating part (5) is inserted into the locking hole (802) of the button (8), the button (8) is in a locked state.

9. The drawer unlocking structure according to claim 7, characterized in that: The button (8) and locking member (7) are mounted on the base frame (14) of the base (1). The base frame (14) includes a guide shaft (144), a vertically connected base plate (141) and a vertical plate (142), a matching screw (145) and a bushing (146). One end of the guide shaft (144) is fixedly connected to the base plate (141), and the other end extends into the guide groove (804) of the button (8). The guide plate (700) is provided with a waist-shaped guide hole (702). The screw (145) is fixed on the vertical plate (142), and the bushing (146) is sleeved on the screw (145) and passes through the guide hole (702) on the guide plate (700). The bushing (146) can slide along the length direction of the guide hole (702).

10. The drawer seat unlocking structure according to any one of claims 1-8, characterized in that: The lead screw (3) is driven to the position rod (6) through the transmission plate (4). The rotation of the lead screw (3) can drive the transmission plate (4) to move, and the transmission plate (4) drives the position rod (6) to move.

11. The drawer seat unlocking structure according to claim 10, characterized in that: The lead screw (3), position lever (6), and locking button (8) are arranged in parallel, with the lead screw (3) located between the position lever (6) and the button (8). The base (1) is provided with a mounting plate (16), a drive shaft (2), and a support plate (12) located between the mounting plate (16) and the drive shaft (2). The lead screw (3) passes through the mounting plate (16) and the support plate (12) of the base (1) and is rotatably mounted on the mounting plate (16) and the support plate (12) of the base (1). The position lever (6) and the button (8) pass through the mounting plate (16) and the support plate (12) of the base (1). Mounting plate (16) and support plate (12) are movably mounted on mounting plate (16) and support plate (12) of base (1). A transmission plate (4) is provided between support plate (12) and transmission shaft (2). One end of transmission plate (4) is driven and connected to lead screw (3) and linked to position rod (6). Transmission shaft (2) is rotatably mounted on base (1), and transmission gear (201) is fixedly mounted on transmission shaft (2). Transmission gear (201) is meshed with meshing port (401) on the other end of transmission plate (4).

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