The drawer unit is operated by a hand-cranked shielded interlocking push mechanism.

Abstract

This utility model relates to a hand-cranked, shielded, interlocking, and pushing mechanism for a drawer unit. It includes a position interlocking mechanism and a hand-cranked pushing mechanism. The position interlocking mechanism comprises an interlocking base plate, a position locking plate, and a blocking plate. The position locking plate is oscillatingly mounted on the interlocking base plate for positioning. The blocking plate is laterally mounted on a front end plate at the front of the interlocking base plate. The position locking plate has a locking plate traction head that inserts into a drive slot on the blocking plate to drive the blocking plate to move laterally. When the position locking plate oscillates back to its original position, the blocking plate moves laterally to the right to block the hole, causing its head to block the hand-cranked operating hole of the hand-cranked pushing mechanism. The advantages are: during positioning, the blocking plate can shield the hand-cranked operating hole, preventing the crank handle from being inserted; and as long as the crank handle is not pulled out, unlocking is no longer required, making operation simpler.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage switchgear technology, and in particular to a hand-cranked shielded interlocking push mechanism for a drawer unit. Background Technology

[0002] The applicant's Chinese patent application CN212784506U discloses a hand-cranked three-position interlocking propulsion mechanism, in which the hand-cranked propulsion mechanism can be locked in three positions, but the hand-cranked operation hole of the hand-cranked propulsion mechanism is not shielded, and the crank handle can be inserted into the hand-cranked operation hole at will for operation. However, because the hand-cranked propulsion mechanism is in a locked state, the crank handle still cannot crank the hand-cranked propulsion mechanism, and the drawer unit is still in a static locked state, which meets the standard requirements.

[0003] However, this hand-cranked three-position interlocking propulsion mechanism requires unlocking in each position before the hand-cranked propulsion operation can be performed. Some users have reported that the operation is cumbersome and hope that it can be simplified. However, it is also required that the hand-cranking operation can be blocked in each position and that it can be locked with a padlock to meet the standard requirements. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the existing drawer unit uses an interlocking push mechanism that is cumbersome to operate.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a hand-cranked shielded interlocking push mechanism for a drawer unit, including a position interlocking mechanism and a hand-cranked push mechanism. The hand-cranked push mechanism is located on the right side of the position interlocking mechanism. The position interlocking mechanism includes an interlocking base plate, a position locking plate, and a hole-blocking plate. The position locking plate is swayably mounted on the interlocking base plate and swings counterclockwise to reset to the position positioning position under the action of an elastic element for position positioning. The front part of the interlocking base plate has a vertically arranged front end plate. The hole-blocking plate is slidably mounted on the front end plate. The position locking plate has a forward-extending locking plate traction head. The hole-blocking plate has a drive slot. The locking plate traction head is inserted into the drive slot to drive the hole-blocking plate to move horizontally left and right. When the position locking plate swings back to the position positioning position, the hole-blocking plate moves horizontally to the right to the hole-blocking position, so that the head of the hole-blocking plate blocks the hand-cranked operation hole of the hand-cranked push mechanism, thus shielding the hand-cranked push mechanism.

[0006] In some embodiments, optionally, the hand-cranked shielding interlocking push mechanism of the drawer unit further includes a closing interlocking mechanism. The closing interlocking mechanism includes a closing interlocking bracket and a closing interlocking locking plate. The closing interlocking locking plate is slidably mounted on the closing interlocking bracket. Both the front end plate and the plugging plate of the interlocking base plate have closing interlocking slots. When the plugging plate is in the plugging position, the closing interlocking slots on the front end plate and the plugging plate overlap. When the closing interlocking locking plate moves downward to the locking position, the locking part of the closing interlocking locking plate is embedded in the overlapping closing interlocking slots on the front end plate and the plugging plate to perform closing interlocking.

[0007] In some embodiments, the hand-cranked propulsion mechanism may be a hand-cranked propulsion mechanism with an elastic positioning device. The elastic positioning device has an elastically ejected positioning element. The front end of the propulsion screw of the hand-cranked propulsion mechanism has an operating bushing. The hand-cranked operating hole is located at the front end of the operating bushing. The side of the operating bushing has a positioning groove. The positioning element of the elastic positioning device, which is mounted on the propulsion screw mounting bracket, is engaged in the positioning groove to position the propulsion screw.

[0008] In some embodiments, optionally, the plugging plate and the front end plate have corresponding padlock holes. When the plugging plate is in the plugging position, the padlock holes on the plugging plate and the front end plate are aligned for locking by a padlock. The left end of the plugging plate has an unlocking operation part for moving the plugging plate to the left, and an unlocking position positioning and hand-cranked propulsion mechanism.

[0009] The beneficial effects of this utility model are as follows: During positioning, the hand-cranked operating hole can be blocked by the plugging plate, preventing the crank handle from being inserted into the hole, thus meeting standard requirements, ensuring operational safety, and preventing misoperation. Furthermore, when the hand-cranked handle is inserted into the hole to push the drawer unit from the separated position to the connected position, as long as the handle is not pulled out, unlocking is no longer required, making operation simpler. If the handle is pulled out during unit positioning, the hand-cranked pushing mechanism is blocked, and the unit is locked in position. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0011] Figure 1 This is a three-dimensional schematic diagram of the position interlocking mechanism in Embodiment 1;

[0012] Figure 2 This is a schematic diagram of the cooperation state between the position interlocking mechanism and the hand-cranked propulsion mechanism in Embodiment 1;

[0013] Figure 3 This is a schematic diagram of the hand-cranked shielded interlocking propulsion mechanism of Embodiment 1;

[0014] Figure 4This is a schematic diagram of the hand-cranked operation shielding interlocking propulsion mechanism in Embodiment 1, where the hand-cranked operation is performed in the unlocked state.

[0015] Figure 5 This is a schematic diagram of the unit door structure in Embodiment 1;

[0016] Figure 6 This is a three-dimensional schematic diagram of the position interlocking mechanism in Embodiment 2;

[0017] Figure 7 This is a schematic diagram of the cooperation state between the position interlocking mechanism and the hand-cranked propulsion mechanism in Embodiment 2;

[0018] Figure 8 This is a schematic diagram of the hand-cranked shielded interlocking propulsion mechanism in Embodiment 2;

[0019] In the diagram, 1. Interlocking base plate, 1-1. Front end plate, 2. Position locking plate, 2-1. Locking plate traction head, 3. Hole blocking plate, 3-1. Unlocking operation part, 4. Hand crank operation hole, 5. Closing interlocking bracket, 6. Closing interlocking locking plate, 6-1. Drive shaft, 7. Closing interlocking slot, 8. Positioning component, 9. Operating bushing, 10. Unlocking button, 11. Padlock hole, 12. Unlocking arm, 13. Crank handle, 14. Closing interlocking traction plate, 14-1. Arc-shaped traction groove, 15. Hand-operated shaft. Detailed Implementation

[0020] Example 1, as Figures 1-5 As shown, a drawer unit has a hand-cranked shielded interlocking push mechanism, including a position interlocking mechanism and a hand-cranked push mechanism. The hand-cranked push mechanism is located on the right side of the position interlocking mechanism. The position interlocking mechanism includes an interlocking base plate 1, a position locking plate 2, and a hole-blocking plate 3. The position locking plate 2 is swayably mounted on the interlocking base plate 1 and swings counterclockwise to reset to the position positioning position under the action of an elastic element for position positioning. The front part of the interlocking base plate 1 has a vertically arranged front end plate 1-1. The hole-blocking plate 3 is slidably mounted on the front end plate 1-1. The position locking plate 2 has a forward-extending locking plate traction head 2-1. The hole-blocking plate 3 has a drive slot. The locking plate traction head 2-1 is inserted into the drive slot to drive the hole-blocking plate 3 to move horizontally left and right. When the position locking plate 2 swings back to the position positioning position, the hole-blocking plate 3 moves horizontally to the right to the hole-blocking position, so that the head of the hole-blocking plate 3 blocks the hand-cranked operation hole 4 of the hand-cranked push mechanism, thus shielding the hand-cranked push mechanism.

[0021] The drawer unit's hand-cranked shielded interlocking push mechanism also includes a closing interlocking mechanism. The closing interlocking mechanism includes a closing interlocking bracket 5 and a closing interlocking locking plate 6. The closing interlocking locking plate 6 can be horizontally mounted on the closing interlocking bracket 5. Both the front end plate 1-1 and the plugging plate 3 of the interlocking base plate 1 have closing interlocking slots 7. When the plugging plate 3 is in the plugging position, the closing interlocking slots 7 on the front end plate 1-1 and the plugging plate 3 overlap. When the closing interlocking locking plate 6 is horizontally moved downward to the locking position, the locking part of the closing interlocking locking plate 6 is inserted into the overlapping closing interlocking slots 7 on the front end plate 1-1 and the plugging plate 3 to perform closing interlocking.

[0022] The hand-cranked propulsion mechanism is a hand-cranked propulsion mechanism with an elastic positioning device. Specifically, the hand-cranked propulsion mechanism with an elastic positioning device in this embodiment 1 is the hand-cranked propulsion mechanism of Chinese patent application CN118654103A. The elastic positioning device has an elastically ejected positioning element 8. The front end of the propulsion screw of the hand-cranked propulsion mechanism has an operating bushing 9. The hand-cranked operating hole 4 is located at the front end of the operating bushing 9. The side of the operating bushing 9 has a positioning groove. The positioning element 8 of the elastic positioning device, which is installed on the propulsion screw mounting bracket, is engaged in the positioning groove to position the propulsion screw, so that the hand-cranked propulsion mechanism will produce a positioning feel and sound enhancement after each position is pushed into place.

[0023] In this embodiment 1, the front end plate 1-1 of the interlocking base plate 1 has two sliding grooves. Screws passing through these grooves are located on the plugging plate 3, enabling the plugging plate 3 and the front end plate 1-1 to be laterally movable. The position locking plate 2 has an unlocking arm 12 extending to the left. The unlocking arm 12 cooperates with the unlocking button 10 on the unit door. When the unlocking button 10 is pressed, the unlocking arm 12 causes the position locking plate 2 to swing clockwise against the elastic force of the elastic element, thus unlocking and positioning the plate. The position locking plate 2 is swayably mounted on the interlocking base plate 1 via a central shaft. The elastic element is a torsion spring. The position locking plate 2 has a position locking shaft for cooperating with the positioning slot of the position positioning element on the unit chamber for position positioning.

[0024] The closing interlock locking plate 6 moves up and down under the drive of the closing interlock traction plate 14. The closing interlock traction plate 14 is driven to cooperate with the manual operating shaft 15 and rotates synchronously with the manual operating shaft 15.

[0025] The closing interlock locking plate 6 and the closing interlock traction plate 14 are driven by the arc-shaped traction slide 14-1 and the drive shaft 6-1 embedded in the arc-shaped traction slide 14-1. The arc-shaped traction slide 14-1 and the drive shaft 6-1 are located on the closing interlock traction plate 14 and the closing interlock locking plate 6, respectively.

[0026] After the drawer unit is in the separated position and the unit door is closed, press and hold the unlock button 10 on the unit door. The unlock arm 12 will cause the position locking plate 2 to swing, and the hole blocking plate 3 will move to the left, unlocking the position positioning and hand-cranked push mechanism. The hand-cranked operation hole 4 will open, and the crank handle 13 can be inserted into the hand-cranked operation hole 4 to perform the hand-cranked push operation, pushing the drawer unit to the test position. The hand-cranked push mechanism will produce a positioning feel and sound prompt. If the crank handle 13 is pulled out at this time, the position locking plate 2 will automatically reset, positioning the drawer unit in the test position. The hole blocking plate 3 will move to the right to block the hand-cranked operation hole 4 again, blocking the hand-cranked push mechanism.

[0027] By repeating the above steps, the drawer unit can be moved from the test position to the connection position.

[0028] If the crank handle 13 is not pulled out in the test position, there is no need to press the unlock button 10 again. You can continue to crank the crank handle 13 to push the drawer unit directly to the connection position. The hand-cranked push mechanism will then provide a positioning feel and sound prompt.

[0029] After the drawer unit reaches the connection position, the circuit breaker closes. The locking part of the closing interlocking locking plate 6 of the closing interlocking mechanism is embedded into the closing interlocking slot 7 on the overlapping front end plate 1-1 and the plugging plate 3 to perform closing interlocking, so that the position interlocking mechanism and the hand-cranked push mechanism cannot be unlocked.

[0030] The drawer unit in this embodiment 1 is a drawer unit with a closing operation. The unlocking button 10 has a padlock hole 11 for locking with a padlock. After the unlocking button 10 is locked with the padlock, this drawer unit cannot be unlocked by manually cranking the shielded interlocking push mechanism.

[0031] Example 2, as Figures 6-8 As shown, it is basically the same as Embodiment 1, except that: the drawer unit is a drawer unit with door opening operation, and the hand-cranked shielded interlocking push mechanism of this drawer unit is adapted to the drawer unit with door opening operation.

[0032] The position locking plate 2 does not have an unlocking arm 12. The plugging plate 3 and the front plate 1-1 have corresponding padlock holes 11. When the plugging plate 3 is in the plugging position, the padlock holes 11 on the plugging plate 3 and the front plate 1-1 are aligned for locking with a padlock. The left end of the plugging plate 3 has an unlocking operation part 3-1 for moving the plugging plate 3 to the left, unlocking position positioning and hand-cranked push mechanism.

[0033] Once locked with the padlock, this drawer unit cannot be unlocked by manually cranking the shielded interlocking mechanism.

Claims

1. A hand-operated shielded interlock advancement mechanism for a drawer unit, characterized by: The device includes a position interlocking mechanism and a hand-cranked propulsion mechanism. The hand-cranked propulsion mechanism is located on the right side of the position interlocking mechanism. The position interlocking mechanism includes an interlocking base plate (1), a position locking plate (2), and a hole-blocking plate (3). The position locking plate (2) is swayably mounted on the interlocking base plate (1) and swings counterclockwise to reset to the position positioning position under the action of the elastic element for position positioning. The front part of the interlocking base plate (1) has a vertically arranged front end plate (1-1). The hole-blocking plate (3) is slidably mounted on the front end plate (1-1). The position locking plate (2) has a forward-extending locking plate traction head (2-1). The hole-blocking plate (3) has a drive slot. The locking plate traction head (2-1) is inserted into the drive slot to drive the hole-blocking plate (3) to move left and right. When the position locking plate (2) swings back to the position positioning position, the hole-blocking plate (3) moves to the right to the hole-blocking position, so that the head of the hole-blocking plate (3) blocks the hand-cranked operation hole (4) of the hand-cranked propulsion mechanism and shields the hand-cranked propulsion mechanism.

2. The drawer unit according to claim 1 has a hand-cranked shielded interlocking push mechanism, characterized in that: It also includes a closing interlocking mechanism, which includes a closing interlocking bracket (5) and a closing interlocking locking plate (6). The closing interlocking locking plate (6) is movably mounted on the closing interlocking bracket (5). The front end plate (1-1) and the plugging plate (3) of the interlocking base plate (1) both have closing interlocking slots (7). When the plugging plate (3) is in the plugging position, the closing interlocking slots (7) on the front end plate (1-1) and the plugging plate (3) overlap. When the closing interlocking locking plate (6) moves downward to the locking position, the locking part of the closing interlocking locking plate (6) is embedded in the overlapping closing interlocking slots (7) on the front end plate (1-1) and the plugging plate (3) to perform closing interlocking.

3. The drawer unit according to claim 1 has a hand-cranked shielded interlocking push mechanism, characterized in that: The hand-cranked propulsion mechanism is a hand-cranked propulsion mechanism with an elastic positioning device. The elastic positioning device has an elastically ejected positioning element (8). The front end of the propulsion screw of the hand-cranked propulsion mechanism has an operating bushing (9). The hand-cranked operating hole (4) is located at the front end of the operating bushing (9). The side of the operating bushing (9) has a positioning groove. The positioning element (8) of the elastic positioning device installed on the propulsion screw mounting bracket is inserted into the positioning groove to position the propulsion screw.

4. The drawer unit according to claim 1 has a hand-cranked shielded interlocking push mechanism, characterized in that: The plugging plate (3) and the front end plate (1-1) have corresponding padlock holes (11). When the plugging plate (3) is in the plugging position, the padlock holes (11) on the plugging plate (3) and the front end plate (1-1) are aligned for locking with a padlock. The left end of the plugging plate (3) has an unlocking operation part (3-1) for moving the plugging plate (3) to the left, and for unlocking position positioning and hand-cranked propulsion mechanism.

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