Extractable unit and unit assembly operable by position of removable portion

Abstract

The application relates to the technical field of switch cabinets, in particular to a movable-part-position-operated draw-out unit and unit assembly, the draw-out unit comprising a fixed part and a movable part, the fixed part being provided with a position-unlocking operation mechanism, the movable part being provided with a position-positioning mechanism and a hand-cranking advancing mechanism, the position-unlocking operation mechanism being provided with a linkage, the linkage being in linkage cooperation with the position-positioning mechanism, so that the position-unlocking operation mechanism unlocks the position positioning of the position-positioning mechanism through the linkage under the unlocking operation of a user. The beneficial effect is that the advancing process of the movable part is more stable and accurate by arranging the hand-cranking advancing mechanism on the movable part. The sheet metal machining precision requirement of the fixed part frame and the movable part frame can be reduced, thereby reducing the manufacturing cost. Because the fixed part is not stressed in the advancing process, the fixed part will not move to the front part of the unit chamber in the advancing process. The unit height can reach 125 mm.

Description

Technical Field

[0001] This invention relates to the field of switchgear technology, and in particular to a removable unit and unit assembly that can be operated at a movable position. Background Technology

[0002] The existing movable partial position-operated withdrawable unit assembly includes a unit chamber and a movable partial position-operated withdrawable unit within the unit chamber. The withdrawable unit comprises a fixed part and a movable part. Position operation is achieved by the movable part moving back and forth within the unit chamber, without occupying external space. The fixed part includes a fixed part frame and, mounted on the fixed part frame, a unit locking mechanism, a hand-cranked propulsion mechanism, an interlocking mechanism, and a position display mechanism. The interlocking mechanism includes a position interlocking mechanism and a closing interlocking mechanism. The position interlocking mechanism includes a position positioning mechanism and corresponding interlocking components.

[0003] The extractable units described below are all extractable units with movable partial position operations.

[0004] Around 2000, the withdrawable unit with movable part operation was a chassis structure. The circuit breaker was installed in the fixed part, and the main circuit moving plug was a movable main circuit moving plug. The connecting bar part of the movable main circuit moving plug was installed in the fixed part, and the plug part of the movable main circuit moving plug was installed on the movable part and moved back and forth together with the movable part. The electroplating layer of the connecting bar part of the connecting bar part had a probability of friction damage.

[0005] The applicant's Chinese patent application 2009200371612 proposes an improved withdrawable unit with a movable part for position operation. Both the circuit breaker and the main circuit moving plug are fixedly installed on the movable part, solving the technical problem of damage to the connection bar caused by using a movable main circuit moving plug. Simultaneously, the closing interlocking mechanism on the fixed part uses a telescopic bushing that can telescopically engage with the opening and closing shaft on one side of the circuit breaker. This allows the closing interlocking mechanism and the circuit breaker to move in tandem during the movement of the movable part from the separated position to the connected position, ensuring the feasibility of the circuit breaker's opening and closing and closing interlocking.

[0006] However, the above two types of movable part position operation of the extractable unit still have the following technical defects:

[0007] 1. The structure of the position interlocking mechanism of the fixed part is complex, and the position interlocking mechanism and its matching position display mechanism and closing interlocking mechanism occupy a large space on the left side of the interlocking mechanism space of the push screw of the fixed part, which makes it impossible to achieve a cabinet width of 500m.

[0008] 2. The hand-cranked propulsion mechanism matching the lead screw and nut must occupy at least 28mm of height in the fixed part, and the position interlocking mechanism must also occupy at least 28mm of height in the fixed part. The closing interlocking mechanism is installed above the position interlocking mechanism, which results in the unit height being limited to 200mm.

[0009] 3. The high precision requirements for sheet metal processing and fitting of the fixed and movable frames of the pull-out unit with movable parts in the chassis structure result in high application costs.

[0010] 4. The pull-out unit with movable part has a propulsion failure. During the movement of the movable part, the fixed part moves forward, which will squeeze the propulsion screw and nut, causing damage to the threads of the propulsion screw and nut. At the same time, the rear of the movable part also has adverse reactions such as upward warping, which increases the squeezing force between the propulsion screw and nut, making the propulsion screw and nut easy to damage. The equipment user cannot repair it and needs to return it to the factory for repair, which is very troublesome.

[0011] To address the aforementioned deficiencies, the applicant's Chinese patent applications 2025105381629 and 2025208230819 propose an improved withdrawable unit with movable partial position operation. This withdrawable unit features a complete interlocking mechanism, low structural cost, small space occupation, and can achieve unit miniaturization. It can be made with a cabinet width of 500mm and a unit height of 150mm. When used for 0.5~31.5KVA control circuits or 100A and below power distribution and control circuits, a single switch cabinet can accommodate 12 unit circuits. The use of T-shaped sliding columns and guide rails for propulsion guidance and limiting reduces the sheet metal processing precision requirements of the fixed and movable parts frames, lowers costs, solves propulsion failures, and controls the upward tilting of the rear of the movable part.

[0012] However, the hand-cranked propulsion mechanism of the aforementioned movable part of the pull-out unit still uses a propulsion screw and nut assembly structure. The thread clearance between the propulsion screw and nut is 0.3mm. The sheet metal processing of the fixed part frame and the movable part frame used for mounting the propulsion screw and nut still requires special molds to ensure the propulsion limit accuracy.

[0013] Furthermore, the insertion pressure of the 630A main circuit connector is relatively high, and the resulting pushing resistance is transmitted to the fixing part sequentially through the nut and the push screw. This causes the fixing part to move forward in the unit compartment under pressure. The locking gap between the locking plate of the unit locking mechanism on the fixing part and the slot on the unit compartment shelf is 2mm. Therefore, the amount of forward movement of the fixing part in the unit compartment is also 2mm, resulting in a reduction in the connection depth of the main circuit connector. After adding a unit positioning device to the fixing part to prevent it from moving backward, the amount of forward movement of the fixing part is reduced to 0.2mm.

[0014] In addition, the industry hopes that the structure of the unit can be further miniaturized, so that a single switchgear can have more unit circuits, reducing the number of switchgear units required and making control circuits below 11kW more practical. Summary of the Invention

[0015] The technical problem to be solved by the present invention is: how to further simplify the structure of the pull-out unit with movable part position operation, and reduce the sheet metal processing accuracy requirements of the fixed part and the movable part of the unit;

[0016] Furthermore, how can we further reduce the unit height so that a single switchgear can have more unit circuits?

[0017] The technical solution adopted by this invention to solve its technical problem is: a removable part position-operable pull-out unit, comprising:

[0018] The fixed part has a position unlocking mechanism, which has an initial state and an unlocking state. The position unlocking mechanism is activated by the user's unlocking operation, switching from the initial state to the unlocking state.

[0019] The movable part is connected to the rear of the fixed part and can be moved back and forth. The movable part has a positioning mechanism and a hand-cranked propulsion mechanism. The hand-cranked propulsion mechanism cooperates with the propulsion fitting on the unit chamber to push the movable part to move back and forth. The positioning mechanism is used to position the movable part.

[0020] The location unlocking mechanism has a linkage component that extends to and works in conjunction with the location positioning mechanism. When the location unlocking mechanism switches to the unlocked state, it unlocks the location positioning mechanism through the linkage component.

[0021] In some embodiments, optionally, the position unlocking mechanism uses the translational movement of the linkage in the left and right directions to position the unlocking position positioning mechanism.

[0022] In some embodiments, optionally, the fixed part also has a closing interlocking mechanism, which is mounted on the fixed part and has a closing interlocking component that is linked to the opening and closing shaft.

[0023] The linkage has a closing interlocking slot that cooperates with the closing interlocking component. The closing interlocking mechanism performs closing interlocking by moving the closing interlocking component downward and embedding it into the closing interlocking slot.

[0024] In some embodiments, optionally, the linkage has a separation position hook, which is configured to hook the hook engagement portion of the movable portion when the movable portion is in the separation position, so that the fixed portion and the movable portion are connected as a whole and can move together, and disengage from the hook engagement portion of the movable portion when the linkage is translated to unlock the position positioning mechanism, thereby releasing the movable portion.

[0025] In some embodiments, optionally, the positioning mechanism has a positioning state and an unlocking state. When the positioning mechanism is in the positioning state, the positioning mechanism positions the movable part. When the positioning mechanism is in the unlocking state, the positioning mechanism releases the positioning of the movable part.

[0026] The positioning mechanism and the position unlocking mechanism are respectively reset to the positioning state and the initial state by their respective elastic reset components;

[0027] Alternatively, the positioning mechanism and the position unlocking mechanism can share the elastic reset element of one of the mechanisms to reset to the positioning state and the initial state.

[0028] In some embodiments, the position unlocking mechanism may include an unlocking action conversion mechanism and a linkage. The linkage is slidably mounted on the fixed part. The unlocking action conversion mechanism is linked to the linkage to drive the linkage to move. The unlocking action conversion mechanism is configured to convert the user's unlocking operation into a driving action that drives the linkage to move.

[0029] In some embodiments, the unlocking action conversion mechanism may include a position unlocking member and a traction member. The position unlocking member is used to cooperate with the position unlocking button on the unit door to transmit the user's unlocking operation. The traction member is swayably mounted on the fixed part in the horizontal plane. The position unlocking member is hinged to the traction member. The position unlocking member drives the traction member to swing under the user's unlocking operation. The traction member is linked with the linkage member so that the linkage member translates under the swinging action of the traction member.

[0030] In some embodiments, optionally, the positioning mechanism positions the movable part by locking the hand-cranked propulsion mechanism;

[0031] Alternatively, the positioning mechanism has a positioning element that extends downward to the unit chamber to engage with a positioning mating element on the unit chamber. The positioning mating element has a positioning slot, and the positioning mechanism positions the movable part by embedding the positioning element into the positioning slot.

[0032] In some embodiments, the linkage may be a toggle-type linkage.

[0033] In some embodiments, optionally, the position unlocking mechanism uses the translational movement of the linkage in the left and right directions to position the unlocking position positioning mechanism.

[0034] The hand-cranked propulsion mechanism moves the movable part back and forth by means of a propulsion screw cooperating with a propulsion fitting on the unit chamber;

[0035] The positioning mechanism includes a lead screw locking component, which is slidably mounted on the movable part. When the positioning mechanism is in the positioning state, the lead screw locking component locks the push lead screw. When the linkage switches the positioning mechanism from the positioning state to the unlocking state, the lead screw locking component moves to one side to release the lock on the push lead screw.

[0036] The specific structure of the linkage and the positioning mechanism is as follows: the lead screw locking part has a second linkage slot, the linkage part extends into the second linkage slot, and when the movable part moves back and forth, the linkage part slides relative to the lead screw locking part in the second linkage slot. When the linkage part moves horizontally, the linkage part moves the lead screw locking part horizontally.

[0037] In some embodiments, optionally, the fixed portion further includes an anti-misoperation position unlocking mechanism, which includes an anti-misoperation swing member and an elastic reset member. The anti-misoperation swing member is oscillatingly mounted on the fixed portion in a horizontal plane. The anti-misoperation swing member has a locked position and an unlocked position. Under the action of the elastic reset member, the anti-misoperation swing member swings back to the locked position. The anti-misoperation swing member has an anti-misoperation mechanism drive part and a locking part. The anti-misoperation mechanism drive part has a drive ramp that engages with a crank handle for operating the hand-cranked propulsion mechanism. The locking part engages with a linkage member to lock the position unlocking operation mechanism in the initial state. When the anti-misoperation swing member is in the locked position, the anti-misoperation mechanism drive part is located in the insertion channel of the crank handle, and the locking part enters the position engaged with the linkage member. When the crank handle is inserted, the crank handle drives the anti-misoperation swing member to swing to the unlocked position through the drive ramp, and the locking part exits the position engaged with the linkage member.

[0038] In some embodiments, optionally, the locking part engages with the linkage by hooking onto the locking engagement part on the linkage;

[0039] The specific structure for locking the locking part and the linkage is as follows: the front part of the linkage has a vertical front plate, and the front plate has a locking groove as a locking part. The locking part hooks onto the linkage by embedding into the locking groove to achieve locking engagement with the linkage.

[0040] A partially movable, retractable unit assembly includes a unit chamber and the aforementioned partially movable, retractable unit within the unit chamber.

[0041] In some embodiments, optionally, the fixed part also has a unit locking mechanism, which has a locked state and an unlocked state. The unit locking mechanism includes a unit locking drive, a unit locking member, and an elastic reset member. The unit locking drive is oscillatingly mounted on the fixed part in a horizontal plane. The oscillating position of the unit locking drive includes a locked position and an unlocked position. The locked position and the unlocked position correspond to the locked state and the unlocked state of the unit locking mechanism, respectively. The unit locking mechanism is reset to the locked state under the action of the elastic reset member and switches to the unlocked state under the user's unlocking operation.

[0042] The unit compartment has a unit locking fitting, and the unit locking fitting has a position positioning slot.

[0043] The unit locking component is mounted on the unit locking drive component and swings with it. The unit locking component extends downward into the unit chamber to cooperate with the unit locking engagement component. When the unit locking drive component is in the locked position, the unit locking component is embedded in the positioning slot of the unit locking engagement component to lock the pull-out unit. When the unit locking drive component swings to the unlocked position, the unit locking component exits the positioning slot of the unit locking engagement component and releases the lock on the pull-out unit.

[0044] The unit locking drive also has an interlocking part extending into the movable part. The movable part has a position interlocking engagement structure located on the side of the unit locking drive facing the unlock position. The side profile of the interlocking part facing the unlock position of the unit locking drive has a clearance section and a blocking section. The clearance section is recessed relative to the blocking section. When the movable part is in the separated position, the clearance section is opposite to the position interlocking engagement structure to allow the unit locking drive to swing to the unlock position. When the movable part leaves the separated position, the blocking section abuts against the position interlocking engagement structure to prevent the unit locking drive from swinging to the unlock position.

[0045] In some embodiments, optionally, the unit locking mechanism further includes an interlocking link, which is translatably mounted on the fixed part. The unit locking drive is linked with the interlocking link so that the interlocking link translates under the swinging action of the unit locking drive. The interlocking link has a handle interlocking insertion port that allows the crank handle of the hand-cranked propulsion mechanism to pass through. When the unit locking drive is in the locked position, the handle interlocking insertion port is aligned with the insertion channel of the crank handle for operating the hand-cranked propulsion mechanism to pass through the insertion channel. When the unit locking drive swings to the unlocked position, the unit locking drive drives the interlocking link to translate, and the handle interlocking insertion port is misaligned with the insertion channel of the crank handle as the interlocking link translates to block the insertion channel.

[0046] The interlocking link also has a unit locking component, and the unit chamber has a unit locking component that cooperates with the unit locking component. The unit locking component on the unit locking drive is the first unit locking component, and the unit locking component that cooperates with the first unit locking component is the first unit locking component. The unit locking component on the interlocking link is the second unit locking component, and the unit locking component that cooperates with the second unit locking component is the second unit locking component. The first unit locking component and the second unit locking component are located on the left and right sides of the fixed part. When the first unit locking component is inserted into the positioning slot of the first unit locking component, the interlocking link drives the second unit locking component to be inserted into the positioning slot of the second unit locking component simultaneously.

[0047] In some embodiments, optionally, the elastic reset member of the unit locking mechanism acts on the unit locking drive member to drive the unit locking drive member to swing and reset to the locked position, thereby resetting the unit locking mechanism to the locked state.

[0048] The unit locking mechanism also includes a unit unlocking component, which is used to cooperate with the unit unlocking button on the unit door to transmit the user's unlocking operation. The unit unlocking component is hinged to the unit locking drive component, and the unit unlocking component drives the unit locking drive component to swing under the user's unlocking operation.

[0049] In some embodiments, optionally, the interlocking link has a first interlocking structure, the linkage has a second interlocking structure, and the first interlocking structure and the second interlocking structure are arranged opposite to each other;

[0050] When the unit locking mechanism is in the locked state and the position unlocking operation mechanism is in the initial state, the first interlocking structure and the second interlocking structure are separated.

[0051] When the unit locking mechanism is in the unlocked state, the first interlocking structure moves to a position that abuts against the second interlocking structure to restrict the movement of the linkage, thereby restricting the position unlocking operation mechanism to the initial state;

[0052] When the position unlocking mechanism is in the unlocked state, the second interlocking structure moves to abut against the first interlocking structure to restrict the movement of the interlocking link, thereby restricting the unit locking mechanism to the locked state.

[0053] In some embodiments, optionally, the first interlocking structure is a protrusion on the interlocking link, and the second interlocking structure is a side portion of the linkage member. The first interlocking structure and the second interlocking structure abut against each other through the side portion of the protrusion and the side portion of the linkage member.

[0054] A removable partial position-operated pull-out unit assembly includes a unit chamber and the aforementioned removable partial position-operated pull-out unit within the unit chamber.

[0055] The hand-cranked propulsion mechanism moves the movable part back and forth by cooperating with the propulsion fitting on the unit chamber through the propulsion screw; the position positioning mechanism positions the movable part by locking the propulsion screw.

[0056] The positioning mechanism includes a positioning component and a lead screw locking component. The positioning component extends downward into the unit chamber to cooperate with the positioning mating component on the unit chamber. The positioning component is linked with the lead screw locking component. The positioning component has a positioning position and an unlocking position, which correspond to the positioning state and unlocking state of the positioning mechanism, respectively. The positioning mating component has a limiting protrusion. The limiting protrusion is used to prevent the positioning component from resetting to the positioning position when the movable part leaves the previous position but has not entered the next position.

[0057] The lead screw locking component is slidably mounted on the movable part. The side of the push lead screw has a lead screw locking slot. When the position positioning mechanism is in the positioning state, the head end of the lead screw locking component is inserted into the lead screw locking slot to lock the push lead screw. When the linkage component switches the position positioning mechanism from the positioning state to the unlocking state, the lead screw locking component moves to one side, causing the head end of the lead screw locking component to disengage from the lead screw locking slot, thus releasing the lock on the push lead screw. The linkage component and the lead screw locking component work together in a linkage manner.

[0058] The beneficial effects of this invention are: by setting the hand-cranked propulsion mechanism on the movable part, and combining the movable part with the propulsion guidance and limit via the sliding column and guide rail, propulsion failure is further avoided, and the propulsion process of the movable part is more stable and precise.

[0059] By setting the hand-cranked propulsion mechanism on the movable part, the propulsion resistance is only applied to the movable part and the hand-cranked propulsion mechanism, thus the fixed part is not subjected to force and will not move. The sheet metal processing of the fixed part frame no longer requires special molds. After eliminating the influence of the sheet metal processing accuracy of the fixed part on the unit propulsion, the sheet metal processing accuracy requirements of the movable part frame can be reduced, and special molds are no longer required, thereby reducing manufacturing costs.

[0060] As the supplier to the switch cabinet manufacturing plant, the applicant only needs to provide the functional mechanisms for the fixed and movable parts, while the switch cabinet manufacturing plant performs the sheet metal CNC machining of the fixed and movable parts and the assembly of the functional mechanisms, which greatly reduces the factory cost of the switch cabinet manufacturing plant.

[0061] Because the fixed part is not subjected to force during the advancement process, it will not move towards the front of the unit chamber during the advancement process, ensuring that the connection depth of the main circuit connector is stable and reliable.

[0062] In existing technology, the closing interlocking mechanism works in conjunction with the lead screw locking component of the position positioning mechanism on the fixed part for closing interlocking. Because the lead screw locking component needs to cooperate with the push lead screw for position interlocking, the height occupied by the lead screw locking component on the fixed part is related to the installation height of the push lead screw and cannot be arbitrarily reduced. The closing interlocking mechanism is installed above the lead screw locking component, resulting in a unit height that can only be 200mm. In this solution, the closing interlocking mechanism works in conjunction with the linkage component of the position unlocking operation mechanism for closing interlocking. The height occupied by the linkage component on the fixed part is no longer related to the installation height of the push lead screw. By reducing the height occupied by the linkage component on the fixed part, the unit height of this movable partial position-operated withdrawable unit can be reduced to 125mm based on a cabinet width of 500mm. This allows a single switchgear to have more unit circuits, replacing half of the movable partial position-operated withdrawable units, reducing application costs and increasing practicality.

[0063] The positioning, unit locking, and closing interlocking functions of this solution are reliable and complete, and the operation interlocking protection is comprehensive, eliminating the risk of misoperation. Attached Figure Description

[0064] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0065] Figure 1 This is a front structural diagram of each mechanism on the fixing part of the present invention;

[0066] Figure 2 This is a schematic diagram of the rear structure of each mechanism on the fixing part of the present invention;

[0067] Figure 3 This is a front view of the unit locking mechanism of the present invention.

[0068] Figure 4 This is a schematic diagram of the rear structure of the unit locking mechanism of the present invention;

[0069] Figure 5 This is a front structural diagram of the position unlocking operation mechanism with interlocking linkage of the present invention;

[0070] Figure 6 This is a schematic diagram of the rear structure of the position unlocking operation mechanism with interlocking linkage of the present invention;

[0071] Figure 7 This is a schematic diagram of the rear structure of the position unlocking operation mechanism with interlocking linkage of the present invention;

[0072] Figure 8 This is a first-dimensional view structural diagram of the anti-misplacement unlocking mechanism locking position unlocking operation mechanism of the present invention;

[0073] Figure 9This is a second perspective view of the anti-misplacement unlocking mechanism locking position unlocking operation mechanism of the present invention;

[0074] Figure 10 This is a third-dimensional structural diagram of the anti-misplacement unlocking mechanism locking position unlocking operation mechanism of the present invention;

[0075] Figure 11 This is a top-view structural diagram of the anti-misplacement unlocking mechanism locking position unlocking operation mechanism of the present invention;

[0076] Figure 12 This is a three-dimensional structural diagram of the anti-misplacement unlocking mechanism of the present invention, showing the unlocking operation mechanism after the crank handle is inserted.

[0077] Figure 13 for Figure 12 A top-down view of the structure;

[0078] Figure 14 This is a front structural diagram of the positioning mechanism of the present invention.

[0079] Figure 15 This is a schematic diagram of the rear structure of the positioning mechanism of the present invention;

[0080] Figure 16 This is a schematic diagram of the rear structure of the positioning mechanism of the present invention;

[0081] Figure 17 This is a schematic diagram of the installation structure of each functional mechanism in the pull-out unit when the present invention is in the separated position;

[0082] Figure 18 This is a schematic diagram of the installation structure of each functional mechanism of the present invention within the movable part;

[0083] Figure 19 This is a front view diagram of the pull-out unit unlocked in the separated position according to the present invention;

[0084] Figure 20 This is a rear view diagram of the present invention, showing the unlocked pull-out unit in the separated position.

[0085] Figure 21 This is a diagram showing the state of inserting the crank handle in the separated position according to the present invention;

[0086] Figure 22 This is a schematic diagram of the unit chamber structure of the present invention;

[0087] Figure 23 This is a front view of the pull-out unit of the present invention in the separated position.

[0088] Figure 24This is a schematic diagram of the back of the pull-out unit of the present invention in the separated position.

[0089] Figure 25 This is a front view of the pull-out unit of the present invention in the unlocked, separated position.

[0090] Figure 26 This is a schematic diagram of the back of the pull-out unit of the present invention in the unlocked, separated position.

[0091] Figure 27 This is a front view of the pull-out unit of the present invention in the test position positioning state.

[0092] Figure 28 This is a schematic diagram of the back of the pull-out unit of the present invention in the test position positioning state;

[0093] Figure 29 This is a front view of the pull-out unit of the present invention in the test position unlocked state.

[0094] Figure 30 This is a schematic diagram of the back of the pull-out unit of the present invention in the unlocked state of the test position;

[0095] Figure 31 This is a front view of the pull-out unit of the present invention in the connected position.

[0096] Figure 32 This is a schematic diagram of the back of the pull-out unit of the present invention in the connected position.

[0097] Figure 33 This is a schematic diagram of the engagement of the pull-out unit of the present invention in the unit unlocked state;

[0098] Figure 34 This is a schematic diagram of the operation of the withdrawable unit in the open state according to the present invention;

[0099] Figure 35 This is a schematic diagram illustrating the engagement of the present invention where the withdrawable unit in the unlocked connected position cannot be closed.

[0100] Figure 36 This is a schematic diagram of the operation of the withdrawable unit in the closed state according to the present invention;

[0101] Figure 37 This is a schematic diagram of the rear structure of the fixing part of the installation unit door of the present invention, which has a cabinet width of 500mm and a unit height of 200mm.

[0102] Figure 38This is a schematic diagram of the front structure of the fixing part of the installation unit door of the present invention, which has a cabinet width of 500mm and a unit height of 200mm.

[0103] Figure 39 This is a schematic diagram of the front structure of the movable part of the present invention, which has a cabinet width of 500mm and a unit height of 200mm.

[0104] Figure 40 This is a schematic diagram of the structure of the pull-out unit of the present invention, which has a cabinet width of 500mm and a unit height of 200mm.

[0105] Figure 41 This is a schematic diagram of the rear structure of the fixing part of the installation unit door of the present invention, which has a cabinet width of 500mm and a unit height of 125mm.

[0106] Figure 42 This is a schematic diagram of the structure of the pull-out unit of the present invention, which has a cabinet width of 500mm and a unit height of 125mm.

[0107] Figure 43 This is a schematic diagram of another installation scheme for the limit switch of the present invention.

[0108] In the figure, 1. Positioning mechanism, 1-1. Positioning drive, 1-2. Positioning component, 1-3. Screw locking component, 1-4. First central rotating shaft, 1-5. First torsion spring, 1-6. First torsion spring positioning shaft, 1-7. Positioning mounting base plate, 1-8. Positioning mating component, 2. Position unlocking operation mechanism, 2-1. Linkage component, 2-1-1. Separation position hook, 2-1-2. Closing interlock slot, 2-1-3. Second interlocking structure, 2-2. Position unlocking component, 2-3. Traction component, 2-3-1. Linkage part, 2-4. Position unlocking operation mounting base plate 3. Unit locking mechanism, 3-1. Unit locking drive, 3-1-1. Interlocking part, 3-1-1-1. Avoidance section, 3-1-1-2. Blocking section, 3-2. Unit locking component, 3-3. Interlocking link, 3-3-1. Handle interlocking insertion port, 3-3-2. First interlocking structure, 3-4. Unit unlocking component, 3-5. Unit locking mounting base plate, 3-6. Second central rotating shaft, 3-7. Second torsion spring, 3-8. Second torsion spring positioning shaft, 3-9. Unit locking mating component, 3-10. Unit interlocking slot, 4. Position display mechanism, 5. Hand-cranked propulsion mechanism, 5-1 5-1-1. Lead screw; 5-2. Lead screw locking slot; 6. Closing interlocking mechanism; 6-1. Opening / closing shaft; 6-2. Closing interlocking component; 7. Positioning slot; 8. Hand crank; 9. Anti-misoperation position unlocking mechanism; 9-1. Anti-misoperation swing component; 9-2. Anti-misoperation mechanism drive unit; 9-3. Locking part; 9-4. Insertion hole bracket; 9-5. Tension spring; 9-6. Handle insertion hole; 9-7. Locking groove; 10-1. Fixed part base plate; 10-2. Fixed part horizontal tie rod; 10-3. Fixed part side plate; 11-1. Movable part base plate; 11-2. 11-3. Rear panel of movable part; 11-4. Horizontal tie rod of movable part; 12. Side panel of movable part; 13. Limit switch fixing bracket; 14. Limit switch; 15. Unit door; 16. Unit unlock button; 17. Position unlock button; 18. Opening / closing handle; 19. Position display window; 20. T-shaped sliding column; 21. Guide rail; 22. Unit chamber floor plate; 23. Push screw separation position limit plate; 24. First linkage slot; 25. Second linkage slot; 26. Third linkage slot; 27. Fourth linkage slot; 28. Limiting protrusion; 29. ​​Hand crank hole. Detailed Implementation

[0109] like Figures 1-42 As shown, a removable portion of the extractable unit is operable in position, comprising:

[0110] The fixed part has a position unlocking mechanism 2, which has an initial state and an unlocking state. The position unlocking mechanism 2 is activated by the user's unlocking operation, switching from the initial state to the unlocking state.

[0111] The movable part is connected to the rear of the fixed part and can be moved back and forth. The movable part has a position positioning mechanism 1 and a hand-cranked propulsion mechanism 5. The hand-cranked propulsion mechanism 5 cooperates with the propulsion fitting 5-2 on the unit chamber to push the movable part to move back and forth. The position positioning mechanism 1 is used to position the movable part.

[0112] The position unlocking mechanism 2 has a linkage 2-1, which extends to the position positioning mechanism 1 and works in conjunction with it. When the position unlocking mechanism 2 switches to the unlocked state, the position unlocking mechanism 2 unlocks the position positioning of the position positioning mechanism 1 through the linkage 2-1.

[0113] The position unlocking mechanism 2 uses the linkage 2-1 to move in the left and right directions to position the unlocking position positioning mechanism 1.

[0114] The fixed part also includes a closing interlocking mechanism 6, a unit locking mechanism 3, a position display mechanism 4, and an anti-misoperation position unlocking mechanism 9. The hand-cranked propulsion mechanism 5 is located in the front middle of the movable part, and the position unlocking operation mechanism 2, the position positioning mechanism 1, and the position display mechanism 4 are located to the left of the hand-cranked propulsion mechanism 5.

[0115] The positioning mechanism 1 has a positioning state and an unlocking state. When the positioning mechanism 1 is in the positioning state, it positions the movable part. When the positioning mechanism 1 is in the unlocking state, it releases the positioning of the movable part. The position unlocking operation mechanism 2 switches from the initial state to the unlocking state under the user's unlocking operation, and switches the positioning mechanism 1 from the positioning state to the unlocking state through the linkage 2-1. The positioning mechanism 1 and the position unlocking operation mechanism 2 share the elastic reset element of the positioning mechanism 1 to reset to the positioning state and the initial state.

[0116] Of course, it is also possible that the position positioning mechanism 1 and the position unlocking operation mechanism 2 are reset to the positioning state and the initial state respectively through their respective elastic reset components; or, the position positioning mechanism 1 and the position unlocking operation mechanism 2 share the elastic reset component of the position unlocking operation mechanism 2 to be reset to the positioning state and the initial state.

[0117] A partially movable, retractable unit assembly includes a unit chamber and the aforementioned partially movable, retractable unit within the unit chamber.

[0118] The unit chamber has a unit locking engagement part 3-9 that cooperates with the unit locking mechanism 3 and a position positioning engagement part 1-8 that cooperates with the position positioning mechanism 1.

[0119] The fixed part and the movable part of this embodiment are described below.

[0120] like Figures 37-42 As shown, the fixed part includes a fixed part frame and a position unlocking operation mechanism 2, a closing interlocking mechanism 6, a unit locking mechanism 3, a position display mechanism 4, and an anti-misoperation position unlocking mechanism 9 installed on the fixed part frame.

[0121] The movable part includes a movable part frame and a positioning mechanism 1, a hand-cranked propulsion mechanism 5, a circuit breaker, and a main circuit moving plug installed on the movable part frame.

[0122] The fixed part frame includes a fixed part base plate 10-1, a fixed part horizontal tie rod 10-2, and a fixed part side plate 10-3. There is a fixed part side plate 10-3 on each of the left and right sides of the fixed part base plate 10-1. The fixed part base plate 10-1 is located at the bottom of the fixed part side plate 10-3, and the fixed part horizontal tie rod 10-2 is located between the left and right fixed part side plates 10-3 and above them. The fixed part side plate 10-3 has a rearwardly extending sliding bracket, which is connected to the movable part via a sliding connection structure, allowing the movable part to be slidably connected to the rear of the fixed part.

[0123] The movable part frame includes a movable part base plate 11-1, a movable part rear plate 11-2, a movable part horizontal tie rod 11-3, and a movable part side plate 11-4. There is a movable part side plate 11-4 on each of the left and right sides of the movable part base plate 11-1. The movable part base plate 11-1 is located at the bottom of the movable part side plate 11-4. The movable part horizontal tie rod 11-3 is located between the left and right movable part side plates 11-4. The movable part horizontal tie rod 11-3 is located at the upper part of the front side of the movable part. The movable part rear plate 11-2 is located at the rear side of the movable part.

[0124] like Figure 24 As shown, the back of the fixed part base plate 10-1 has a push screw separation position limiting plate 23. The push screw separation position limiting plate 23 is used to abut against the front end of the thread of the push screw 5-1 when the movable part is in the separation position, thereby limiting the initial angle of the push screw 5-1.

[0125] exist Figures 37-40 In the middle, the width of the pull-out unit is 500mm and the unit height is 200mm, while... Figures 41-42 In this case, the cabinet width of the withdrawable unit is 500mm and the unit height is 125mm. In order to achieve this miniaturized withdrawable unit, the closing interlocking mechanism adopted is an eccentric closing interlocking mechanism.

[0126] The positioning mechanism 1 of this embodiment is described below.

[0127] The positioning mechanism 1 positions the movable part by locking the hand-cranked propulsion mechanism 5.

[0128] like Figures 14-32 As shown, in this embodiment, the hand-cranked propulsion mechanism 5, through the cooperation of the propulsion screw 5-1 and the propulsion fitting 5-2 on the unit chamber, pushes the movable part to move back and forth. The position positioning mechanism 1 positions the movable part by locking the propulsion screw 5-1.

[0129] The positioning mechanism 1 includes a lead screw locking member 1-3, which is slidably mounted on the movable part. When the positioning mechanism 1 is in the positioning state, the lead screw locking member 1-3 locks the push lead screw 5-1. When the linkage member 2-1 switches the positioning mechanism 1 from the positioning state to the unlocking state, the lead screw locking member 1-3 moves to one side to release the lock on the push lead screw 5-1.

[0130] The position positioning mechanism 1 also includes a position positioning member 1-2, which extends downward into the unit chamber to cooperate with the position positioning mating member 1-8. The position positioning member 1-2 is linked with the lead screw locking member 1-3. The position positioning member 1-2 has a positioning position and an unlocking position, which correspond to the positioning state and unlocking state of the position positioning mechanism 1, respectively. The position positioning mating member 1-8 has at least one limiting protrusion 28, which is used to prevent the position positioning member 1-2 from resetting to the positioning position when the movable part leaves the previous position but does not enter the next position.

[0131] like Figure 24 As shown, in this embodiment, the movable part is positioned in three locations, and the number of limiting protrusions 28 is two.

[0132] The side of the lead screw 5-1 has a lead screw locking slot 5-1-1. The head end of the lead screw locking member 1-3 is inserted into the lead screw locking slot 5-1-1 to lock the lead screw 5-1. The lead screw locking member 1-3 is moved to one side so that the head end of the lead screw locking member 1-3 is disengaged from the lead screw locking slot 5-1-1, thereby releasing the lock on the lead screw 5-1.

[0133] The positioning mechanism 1 also includes a positioning drive 1-1 and an elastic reset member. The positioning drive 1-1 is oscillatingly mounted on the movable part in the horizontal plane. The oscillation positions of the positioning drive 1-1 include a positioning position and an unlocking position, which correspond to the positioning state and unlocking state of the positioning mechanism 1, respectively. The elastic reset member acts on the positioning drive 1-1 to drive it to oscillate and reset to the positioning position. The positioning member 1-2 is disposed on the positioning drive 1-1. -1 swings together with it. The lead screw locking part 1-3 and the position positioning drive part 1-1 work together. When the movable part moves back and forth into the corresponding position, the position positioning part 1-2 has already disengaged from the obstruction of the limiting protrusion 28. The position positioning drive part 1-1 swings back to its original position under the action of the elastic reset part. The position positioning drive part 1-1 drives the lead screw locking part 1-3 to translate. The head end of the lead screw locking part 1-3 is inserted into the lead screw locking slot 5-1-1 to lock the push lead screw 5-1. The position positioning mechanism 1 is reset to the positioning state, and the movable part is in the position positioning state. When the linkage 2-1 switches the position positioning mechanism 1 from the positioning state to the unlocking state, the lead screw locking part 1-3 translates in the opposite direction, so that the head end of the lead screw locking part 1-3 disengages from the lead screw locking slot 5-1-1, releasing the lock on the push lead screw 5-1. The position positioning part 1-2 and the position positioning drive part 1-1 swing to the unlocked position, and the movable part is in the position unlocked state.

[0134] In this embodiment, more specifically, the lead screw locking slot 5-1-1 is located on the side of the front end of the lead screw 5-1, and the position positioning drive 1-1 is oscillatingly mounted on the movable part base plate 11-1 of the movable part in the horizontal plane. The position positioning mechanism 1 also includes a position positioning mounting base plate 1-7, which serves as the mounting base for the position positioning drive 1-1. The position positioning drive 1-1 is oscillatingly mounted on the position positioning mounting base plate 1-7 in the horizontal plane via a first central rotating shaft 1-4, and the position positioning mounting base plate 1-7 is mounted on the movable part base plate 11-1.

[0135] The elastic reset component of the positioning mechanism 1 is a first torsion spring 1-5, which is sleeved on the first central rotating shaft 1-4. One end of the first torsion spring 1-5 abuts against the positioning drive component 1-1, and the other end abuts against the first torsion spring positioning shaft 1-6 on the positioning mounting base plate 1-7. This allows the first torsion spring 1-5 to act on the positioning drive component 1-1, driving it to swing and reset to the positioning position. After the positioning drive component 1-1 swings and resets to the positioning position, the positioning mechanism 1 synchronously drives the position unlocking operation mechanism 2 to reset to its initial state via the linkage component 2-1.

[0136] The front end of the positioning mounting base plate 1-7 has a vertical front bend. The lead screw locking member 1-3 can be laterally mounted on the front bend of the positioning mounting base plate 1-7 via a lateral connection structure. The lateral connection structure is specifically a sliding groove connection structure. The sliding groove connection structure specifically includes a sliding groove and a sliding groove screw that passes through the sliding groove for connection and installation.

[0137] The position positioning drive 1-1 has two swing ends with different swing directions, namely the front swing end and the rear swing end. The position positioning component 1-2 is located at the rear swing end of the position positioning drive 1-1. The front swing end of the position positioning drive 1-1 is linked with the lead screw locking component 1-3.

[0138] The linkage between the lead screw locking component 1-3 and the position positioning drive component 1-1 is a toggle-type linkage.

[0139] like Figures 14-16 As shown, the specific structure of the toggle linkage between the lead screw locking component 1-3 and the position positioning drive component 1-1 is as follows: the lead screw locking component 1-3 has a first linkage slot 24, and the front swing end of the position positioning drive component 1-1 extends into the first linkage slot 24 to realize the toggle linkage between the lead screw locking component 1-3 and the position positioning drive component 1-1. When the position positioning drive component 1-1 swings, it moves the lead screw locking component 1-3 to translate, or when the lead screw locking component 1-3 translates, it moves the position positioning drive component 1-1 to swing.

[0140] like Figure 17 As shown, the linkage 2-1 is engaged with the position positioning mechanism 1 in a toggle-type linkage. The specific structure of the linkage 2-1 and the position positioning mechanism 1 in a toggle-type linkage is as follows: the lead screw locking member 1-3 has a second linkage slot 25. The linkage 2-1 extends into the second linkage slot 25. When the movable part moves back and forth, the linkage 2-1 slides relative to the lead screw locking member 1-3 in the second linkage slot 25. When the linkage 2-1 translates, the linkage 2-1 actuates the lead screw locking member 1-3 to translate.

[0141] In this embodiment, the linkage 2-1 is linked with the lead screw locking part 1-3 of the position positioning mechanism 1 to unlock the position positioning of the position positioning mechanism 1. Of course, it is also possible that the linkage 2-1 is linked with other movable parts of the position positioning mechanism 1, such as the linkage 2-1 being linked with the position positioning drive part 1-1.

[0142] In this embodiment, the lead screw locking component 1-3 is linked with the position positioning component 1-2 through the position positioning drive component 1-1. Of course, it is also possible that the position positioning component 1-2 is directly set on the lead screw locking component 1-3 and directly linked with the lead screw locking component 1-3. Of course, the position positioning mating component 1-8 also needs to be adapted for this purpose.

[0143] Another scheme for positioning the movable part using the positioning mechanism 1 is as follows: This scheme is basically the same as the positioning mechanism 1 described above. The positioning mechanism 1 has a positioning component 1-2, which extends downward to the unit chamber to cooperate with the positioning mating component 1-8. The difference is that the positioning mating component 1-8 has a positioning slot 7. The positioning mechanism 1 positions the movable part by embedding the positioning component 1-2 into the positioning slot 7. When the movable part is positioned in three positions, there are three positioning slots 7, arranged from front to back on the side of the positioning mating component 1-8, corresponding to the separation position, the test position, and the connection position, respectively.

[0144] In the second scheme, the lead screw locking component 1-3 in the positioning mechanism 1 can be omitted, and the linkage component 2-1 is linked and cooperates with the positioning drive component 1-1. If the lead screw locking component 1-3 is retained, it can play a dual position positioning role, and can also prevent misoperation by locking the push lead screw 5-1.

[0145] The position unlocking mechanism 2 of this embodiment will be described below.

[0146] like Figures 5-7 As shown, the position unlocking mechanism 2 includes an unlocking action conversion mechanism and a linkage 2-1. The linkage 2-1 is slidably mounted on the fixed part. The unlocking action conversion mechanism is linked with the linkage 2-1 to drive the linkage 2-1 to move. The unlocking action conversion mechanism is configured to convert the user's press-to-unlock operation into a driving action that drives the linkage 2-1 to move.

[0147] The unlocking action conversion mechanism includes a position unlocking component 2-2 and a traction component 2-3. The position unlocking component 2-2 is used to cooperate with the position unlocking button 17 on the unit door 15 to transmit the user's unlocking operation. The traction component 2-3 is swayably mounted on the fixed part in the horizontal plane. The position unlocking component 2-2 is hinged to the traction component 2-3. Under the user's unlocking operation, the position unlocking component 2-2 drives the traction component 2-3 to swing. The traction component 2-3 is linked with the linkage component 2-1 so that the linkage component 2-1 is translated under the swinging action of the traction component 2-3.

[0148] like Figure 17 As shown, the linkage 2-1 has a separation position hook 2-1-1. The separation position hook 2-1-1 is configured to hook the hook engagement part of the movable part when the movable part is in the separation position, so that the fixed part and the movable part are connected as a whole and can move together. When the linkage 2-1 is translated to unlock the position positioning mechanism 1, it disengages from the hook engagement part of the movable part and releases the movable part.

[0149] The closing interlocking mechanism 6 is mounted on the fixed part. The closing interlocking mechanism 6 has a closing interlocking component 6-2 that is linked to the circuit breaker's opening / closing shaft 6-1. The linkage component 2-1 has a closing interlocking slot 2-1-2 that mates with the closing interlocking component 6-2. The closing interlocking mechanism 6 performs closing interlocking by the closing interlocking component 6-2 moving downwards and engaging with the closing interlocking slot 2-1-2. The lower end of the closing interlocking component 6-2 has a locking head, which engages with the closing interlocking slot 2-1-2 for closing interlocking.

[0150] In this embodiment, more specifically, the traction member 2-3 is swayably mounted on the fixed part base plate 10-1 of the fixed part in the horizontal plane. The position unlocking operation mechanism 2 also includes a position unlocking operation mounting base plate 2-4, which serves as the mounting base for the traction member 2-3. The position unlocking operation mounting base plate 2-4 is mounted on the fixed part base plate 10-1. The traction member 2-3 is swayably mounted on the position unlocking operation mounting base plate 2-4 in the horizontal plane. The position unlocking member 2-2 is hinged to the traction member 2-3 by rivets.

[0151] The traction member 2-3 has two swing ends with different swing directions, left and right. The position unlocking member 2-2 extends forward and backward and is hinged to the left swing end of the traction member 2-3. The front end of the linkage member 2-1 is slidably mounted on the fixed part. The right swing end of the traction member 2-3 is located behind the front end of the linkage member 2-1. The right swing end of the traction member 2-3 has a forward-extending linkage part 2-3-1 for linkage with the linkage member 2-1.

[0152] The position unlocking operation mounting base plate 2-4 has a vertical front bend at its front end. The linkage 2-1 is L-shaped, including a horizontal extension plate and a vertical front end plate at the front end of the horizontal extension plate. A slidable connection structure exists between the front end plate of the linkage 2-1 and the front bend of the position unlocking operation mounting base plate 2-4, allowing the linkage 2-1 to be slidably mounted on the front bend of the position unlocking operation mounting base plate 2-4 via its front end plate. Specifically, the slidable connection structure is a groove-type connection structure. The closing interlock slot 2-1-2 on the linkage 2-1 is located at the top of the front end plate of the linkage 2-1. The closing interlock slot 2-1-2 on the linkage 2-1 is the first closing interlock slot. The front end bend of the position unlocking operation mounting base plate 2-4 also has a second closing interlock slot that matches the first closing interlock slot. When the circuit breaker is closed, the locking head at the lower end of the closing interlock component 6-2 is simultaneously inserted into the first closing interlock slot and the second closing interlock slot.

[0153] The separation position hook 2-1-1 is located on the right side of the linkage 2-1. The separation position hook 2-1-1 extends to the right and has a front bend at the front end of the movable part base plate 11-1. The hook mating part is a protrusion on the front bend of the movable part base plate 11-1, located on the right side of the separation position hook 2-1-1.

[0154] The linkage between the traction component 2-3 and the linkage component 2-1, as well as the linkage between the linkage component 2-1 and the positioning mechanism 1, are all toggle-type linkages.

[0155] like Figure 6 As shown, the specific structure of the toggle linkage between the traction member 2-3 and the linkage member 2-1 is as follows: the linkage member 2-1 has a third linkage slot 26, and the linkage part 2-3-1 of the traction member 2-3 extends into the third linkage slot 26 to realize the toggle linkage between the traction member 2-3 and the linkage member 2-1.

[0156] The unit locking mechanism 3 and the unit locking mating parts 3-9 of this embodiment will be described below.

[0157] like Figures 1-7 As shown in Figures 23 and 24, the unit locking mechanism 3 is used to lock the pull-out unit in conjunction with the unit locking mating part 3-9, so that the pull-out unit is always locked during the three-position advancement of the movable part, and can only be unlocked when the movable part is in the separated position. The unit locking mechanism 3 has a locked state and an unlocked state. The unit locking mechanism 3 includes a unit locking drive part 3-1, a unit locking part 3-2, and an elastic reset part. The unit locking drive part 3-1 is oscillatingly mounted on the fixed part in the horizontal plane. The oscillating positions of the unit locking drive part 3-1 include a locked position and an unlocked position, which correspond to the locked state and unlocked state of the unit locking mechanism 3, respectively. The unit locking mechanism 3 is reset to the locked state under the action of the elastic reset part, and switches to the unlocked state under the user's unlocking operation.

[0158] The unit locking fitting 3-9 is installed on the unit chamber, and the unit locking fitting 3-9 has a position positioning slot 7.

[0159] The unit locking component 3-2 is mounted on the unit locking drive component 3-1 and swings with it. The unit locking component 3-2 extends downward to the unit chamber to cooperate with the unit locking engagement component 3-9. When the unit locking drive component 3-1 is in the locked position, the unit locking component 3-2 is embedded in the position positioning slot 7 of the unit locking engagement component 3-9 to lock the pull-out unit. When the unit locking drive component 3-1 swings to the unlocked position, the unit locking component 3-2 exits the position positioning slot 7 of the unit locking engagement component 3-9 to release the lock on the pull-out unit.

[0160] The unit locking drive 3-1 also has an interlocking part 3-1-1 extending into the movable part. The front end of the movable part has a position interlocking engagement structure, which is located on the side of the unit locking drive 3-1 facing the unlock position. The side profile of the interlocking part 3-1-1 facing the unlock position of the unit locking drive 3-1 has a clearance section 3-1-1-1 and a blocking section 3-1-1-2. The clearance section 3-1-1-1 is recessed relative to the blocking section 3-1-1-2. When the movable part is in the separated position, the clearance section 3-1-1-1 is opposite to the position interlocking engagement structure to allow the unit locking drive 3-1 to swing to the unlock position. When the movable part leaves the separated position, the blocking section 3-1-1-2 abuts against the position interlocking engagement structure to prevent the unit locking drive 3-1 from swinging to the unlock position.

[0161] The unit locking mechanism 3 also includes an interlocking link 3-3, which is slidably mounted on the fixed part. The unit locking drive 3-1 is linked with the interlocking link 3-3 so that the interlocking link 3-3 is slidably moved under the swinging action of the unit locking drive 3-1. The interlocking link 3-3 has a handle interlocking insertion port 3-3-1 that allows the crank handle 8 of the hand-cranked push mechanism 5 to pass through. When the unit locking drive 3-1 is in the locked position, the handle interlocking insertion port 3-3-1 is aligned with the insertion channel of the crank handle 8 used to operate the hand-cranked push mechanism 5 so as to pass through the insertion channel. When the unit locking drive 3-1 swings to the unlocked position, the unit locking drive 3-1 drives the interlocking link 3-3 to slid, and the handle interlocking insertion port 3-3-1 is misaligned with the insertion channel of the crank handle 8 as the interlocking link 3-3 slids, so as to block the insertion channel.

[0162] The interlocking link 3-3 also has a unit locking component 3-2, and the unit chamber has a unit locking component 3-9 that cooperates with the unit locking component 3-2. The unit locking component 3-2 on the unit locking drive component 3-1 is the first unit locking component, and the unit locking component 3-9 that cooperates with the first unit locking component is the first unit locking component. The unit locking component 3-2 on the interlocking link 3-3 is the second unit locking component, and the unit locking component 3-9 that cooperates with the second unit locking component is the second unit locking component. The first unit locking component and the second unit locking component are located on the left and right sides of the fixed part. When the first unit locking component is inserted into the positioning slot 7 of the first unit locking component, the interlocking link 3-3 drives the second unit locking component to be inserted into the positioning slot 7 of the second unit locking component simultaneously.

[0163] The elastic reset element of the unit locking mechanism acts on the unit locking drive 3-1 to drive the unit locking drive 3-1 to swing and reset to the locked position, thereby resetting the unit locking mechanism 3 to the locked state. The unit locking mechanism 3 also includes a unit unlocking element 3-4, which is used to cooperate with the unit unlocking button 16 on the unit door 15 to transmit the user's unlocking operation. The unit unlocking element 3-4 is hinged to the unit locking drive 3-1, and the unit unlocking element 3-4 drives the unit locking drive 3-1 to swing under the user's unlocking operation.

[0164] The interlocking link 3-3 has a first interlocking structure 3-3-2, and the linkage 2-1 has a second interlocking structure 2-1-3. The first interlocking structure 3-3-2 and the second interlocking structure 2-1-3 are arranged opposite to each other.

[0165] When the unit locking mechanism 3 is in the locked state and the position unlocking operation mechanism 2 is in the initial state, the first interlocking structure 3-3-2 and the second interlocking structure 2-1-3 are separated;

[0166] When the unit locking mechanism 3 is in the unlocked state, the first interlocking structure 3-3-2 moves to a position that abuts against the second interlocking structure 2-1-3 to restrict the movement of the linkage 2-1, thereby restricting the position unlocking operation mechanism 2 to the initial state;

[0167] When the position unlocking mechanism 2 is in the unlocked state, the second interlocking structure 2-1-3 moves to abut against the first interlocking structure 3-3-2 to restrict the movement of the interlocking link 3-3, thereby restricting the unit locking mechanism 3 to the locked state.

[0168] The first interlocking structure 3-3-2 is a protrusion on the interlocking link 3-3, and the second interlocking structure 2-1-3 is the side of the linkage 2-1. The first interlocking structure 3-3-2 and the second interlocking structure 2-1-3 abut against the side of the linkage 2-1 through the side of the protrusion.

[0169] In this embodiment, more specifically, the unit locking drive 3-1 and the interlocking rod 3-3 are mounted on the fixed part base plate 10-1 of the fixed part. The unit locking mechanism 3 also includes a unit locking mounting base plate 3-5, which serves as the mounting base for the unit locking drive 3-1. The unit locking drive 3-1 is swayably mounted on the unit locking mounting base plate 3-5 in the horizontal plane via a second central rotating shaft 3-6. The unit locking mounting base plate 3-5 is mounted on the fixed part base plate 10-1. The elastic reset component of the unit locking mechanism 3 is a second torsion spring 3-7. The second torsion spring 3-7 is sleeved on the second central rotating shaft 3-6. One end of the second torsion spring 3-7 abuts against the unit locking drive 3-1, and the other end abuts against the second torsion spring positioning shaft 3-8 on the unit locking mounting base plate 3-5, so that the second torsion spring 3-7 acts on the unit locking drive 3-1 to drive the unit locking drive 3-1 to swing and reset to the locked position.

[0170] The unit locking drive 3-1 and the first unit locking member on the unit locking drive 3-1 are located on the right side of the hand-cranked propulsion mechanism 5, and the second unit locking member on the interlocking link 3-3 is located on the left side of the hand-cranked propulsion mechanism 5.

[0171] The unit locking drive 3-1 has two swing arms with different swing directions, namely the front swing arm and the rear swing arm. The rear swing arm extends forward and backward. The interlocking part 3-1-1 is the rear part of the rear swing arm. The unit locking part 3-2 is located on the rear swing arm and in front of the interlocking part 3-1-1. The front swing arm of the unit locking drive 3-1 extends left and right. The unit unlocking part 3-4 extends forward and backward and is hinged to the end of the front swing arm.

[0172] The movable part base plate 11-1 has a unit interlocking slot 3-10 on its front end bend. The interlocking part 3-1-1 of the unit locking drive 3-1 extends into the movable part through the unit interlocking slot 3-10. The position interlocking structure is the side of the unit interlocking slot 3-10 on the front end bend of the movable part base plate 11-1.

[0173] The rear end of the fixed part base plate 10-1 has a vertical rear end bend, and the interlocking link 3-3 can be installed on the rear end bend of the fixed part base plate 10-1 by sliding groove connection structure.

[0174] The linkage between the unit locking drive 3-1 and the interlocking link 3-3 is also a toggle-type linkage. The specific structure of the toggle-type linkage between the unit locking drive 3-1 and the interlocking link 3-3 is as follows: the interlocking link 3-3 has a fourth linkage slot 27, and the interlocking part 3-1-1 of the unit locking drive 3-1 passes through the fourth linkage slot 27 to realize the toggle-type linkage between the unit locking drive 3-1 and the interlocking link 3-3.

[0175] The anti-misplacement unlocking mechanism 9 of this embodiment will now be described.

[0176] like Figures 8-13 As shown, the anti-misoperation position unlocking mechanism 9 includes an anti-misoperation swing member 9-1 and an elastic reset member. The anti-misoperation swing member 9-1 is oscillatingly mounted on the fixed part in the horizontal plane. The anti-misoperation swing member 9-1 has a locked position and an unlocked position. Under the action of the elastic reset member, the anti-misoperation swing member 9-1 swings back to the locked position. The anti-misoperation swing member 9-1 has an anti-misoperation mechanism drive part 9-2 and a locking part 9-3. The anti-misoperation mechanism drive part 9-2 has a drive slope that drives and cooperates with the crank handle 8 used to operate the hand-cranked propulsion mechanism 5. The locking part 9-3 engages with the linkage 2-1 to lock the position unlocking operation mechanism 2 in the initial state. When the anti-misoperation swinging part 9-1 is in the locked position, the anti-misoperation mechanism drive part 9-2 is located in the insertion channel of the crank handle 8, and the locking part 9-3 enters the position where it engages with the linkage 2-1. When the crank handle 8 is inserted, the crank handle 8 drives the anti-misoperation swinging part 9-1 to swing to the unlocked position through the drive ramp of the anti-misoperation mechanism drive part 9-2, and the locking part 9-3 exits the position where it engages with the linkage 2-1.

[0177] The locking part 9-3 engages with the linkage 2-1 by hooking onto the locking engagement part on the linkage 2-1.

[0178] The specific structure of the locking part 9-3 and the linkage 2-1 locking engagement is as follows: the front end plate of the linkage 2-1 has a locking groove 9-7 as a locking engagement part, and the locking part 9-3 hooks the linkage 2-1 by embedding into the locking groove 9-7 to achieve a locking engagement with the linkage 2-1.

[0179] In this embodiment, more specifically, the anti-misoperation position unlocking mechanism 9 also includes a mounting base plate. The anti-misoperation swing member 9-1 is swingably mounted on the mounting base plate in the horizontal plane via a central pivot. The mounting base plate is mounted on the fixed part base plate 10-1. The mounting base plate is the position unlocking operation mounting base plate 2-4.

[0180] The anti-misoperation swing component 9-1 is an L-shaped crank arm structure, with a lateral swing arm and a longitudinal swing arm. The lateral swing arm extends from right to left, and the longitudinal swing arm extends from front to back. The locking part 9-3 is located on the lateral swing arm, and the anti-misoperation mechanism drive part 9-2 is located on the longitudinal swing arm.

[0181] The elastic reset component of the anti-misoperation position unlocking mechanism 9 is a tension spring 9-5, located above the insertion channel of the crank handle 8. Both ends of the tension spring 9-5 are connected to the linkage 2-1 and the longitudinal swing arm, respectively. The connection point between the tension spring 9-5 and the longitudinal swing arm is located at the upper end of the anti-misoperation mechanism drive unit 9-2. The tension spring 9-5 also assists in the reset of the position unlocking operation mechanism 2.

[0182] The locking part 9-3 is a forward-extending part on the end of the transverse swing arm. The anti-misoperation mechanism drive part 9-2 is located at the end of the longitudinal swing arm. The anti-misoperation mechanism drive part 9-2 is an inclined plate at the end of the longitudinal swing arm, and the front plate surface of the inclined plate is a drive inclined surface.

[0183] Of course, the elastic reset component of the anti-misplacement unlocking mechanism 9 may also be a torsion spring.

[0184] The fixed part has at least two handle insertion holes 9-6 for guiding the insertion of the crank handle 8, and the at least two handle insertion holes 9-6 are located in front of the anti-misoperation mechanism drive unit 9-2. The position unlocking operation mounting base plate 2-4 has an insertion hole bracket 9-4, which is located in front of the anti-misoperation mechanism drive unit 9-2.

[0185] The position unlocking operation mounting base 2-4 has a handle insertion hole 9-6 on its front curved edge and insertion hole bracket 9-4.

[0186] The front end of the fixed part base plate 10-1 has a vertical front bend. The front bend of the fixed part base plate 10-1, the rear bend of the fixed part base plate 10-1, and the front bend of the movable part base plate 11-1 have a clearance hole or a handle insertion hole 9-6 for the insertion of the crank handle 8. The crank handle 8 is inserted into the operation hole of the push screw 5-1 of the hand-cranked push mechanism 5 under the guidance of the handle insertion hole 9-6 for manually pushing the screw 5-1. The channel defined by the handle insertion hole 9-6 is the insertion channel of the crank handle 8.

[0187] The other components of the removable portion position-operable pull-out unit assembly of this embodiment will now be described.

[0188] like Figure 1 As shown, the fixed part also has a limit switch fixing bracket 12 and a limit switch 13. The left side of the lead screw locking member 1-3 has a limit switch stop plate 14 for pressing the limit switch 13. The limit switch fixing bracket 12 extends from the fixed part into the movable part. The limit switch 13, located in the movable part, is mounted on the limit switch fixing bracket 12. When the lead screw locking member 1-3 moves horizontally, it presses the limit switch 13 through the limit switch stop plate 14. Figure 27 and 29 As shown.

[0189] Or, such as Figure 43 As shown, the limit switch fixing bracket 12 is installed on the movable part, and the limit switch fixing bracket 12 is specifically installed on the position positioning mounting base plate 1-7.

[0190] like Figure 38As shown, the withdrawable unit also includes a unit door 15, which is installed at the front end of the fixed part. The unit door 15 has a switch handle 18, a position display window 19, and a crank handle hole 29.

[0191] For the pull-out unit door closing operation, the unit door 15 is provided with a unit unlock button 16 and a position unlock button 17 for the closing operation.

[0192] Unit unlock button 16 abuts and engages with unit unlock component 3-4, transmitting the user's unlocking operation to unit unlock component 3-4 via unit unlock button 16. Position unlock button 17 abuts and engages with position unlock component 2-2, transmitting the user's unlocking operation to position unlock component 2-2 via position unlock button 17. The opening / closing handle 18 is inserted into the handle shaft of the closing interlocking mechanism 6, used to open / close the circuit breaker on the movable part via the opening / closing handle 18.

[0193] The unit unlocking component 3-4 and the position unlocking component 2-2 are designed to cooperate with the closing operation of the pull-out unit. Of course, it is also possible that the pull-out unit can be opened. When opening the door, the user directly operates the unit locking drive component 3-1 and the traction component 2-3 to unlock the door.

[0194] like Figure 17 and 22 As shown, the bottom of the movable part has T-shaped sliding columns 20 on both sides of the back side, and the unit chamber shelf of the unit chamber has guide rails 21 on both sides. The T-shaped sliding columns 20 and the guide rails 21 are hooked together to guide and limit the movement of the movable part.

[0195] The propulsion fitting 5-2 on the unit chamber is a groove-shaped positioning component with an inclined groove. The propulsion screw 5-1 engages with the inclined groove on the groove-shaped positioning component to push the movable part back and forth. The positioning slots 7 of the first unit locking fitting and the second unit locking fitting are located on the sides of the first unit locking fitting and the second unit locking fitting. The propulsion fitting 5-2, the unit locking fitting 3-9, and the positioning fitting 1-8 are specifically installed on the unit chamber floor plate 22 of the unit chamber.

[0196] The three-position operation process of this movable partial position-operated pull-out unit assembly is as follows:

[0197] Separation location: such as Figure 23 and 24As shown, the pull-out unit is inserted into the unit chamber, and the T-shaped sliding column 20 enters the guide rail groove of the guide rail 21 until the first unit locking member and the second unit locking member of the unit locking mechanism 3 are respectively embedded in the position positioning slots 7 of the first unit locking engagement member and the second unit locking engagement member, locking the pull-out unit. The handle interlocking insertion port 3-3-1 of the interlocking link 3-3 is aligned with the insertion channel of the crank handle 8. The crank handle 8 can be inserted into the operation hole of the push screw 5-1 through the insertion channel for manually pushing the screw 5-1. At the same time, the movable part of the pull-out unit is in the separated position, the position positioning mechanism 1 is in the positioning state, the head end of the screw locking member 1-3 is inserted into the screw locking slot 5-1-1, locking the push screw 5-1. The movable part is in the position positioning state and is positioned in the separated position. The unit door 15 is closed, and the position display mechanism 4 displays the position mark representing separation through the position display window 19.

[0198] Separate to the test location and advance: such as Figure 25 and 26 As shown, the crank handle hole 29 on the unit door 15 is opened. The crank handle 8 is inserted into the operating hole of the push screw 5-1 under the guidance of the handle insertion hole 9-6. During the insertion of the crank handle 8, the crank handle 8 drives the anti-misoperation swing member 9-1 to swing to the unlock position through the anti-misoperation mechanism drive part 9-2. The unlock position unlocks the operating mechanism 2. The user presses the position unlock button 17 to perform the unlocking operation. The user's unlocking operation is transmitted to the position unlock member 2-2 through the position unlock button 17. The position unlock member 2-2 drives the traction member 2-3 to swing. The traction member 2-3 and the linkage member 2-1 work together to make the linkage member 2-1 move to the left under the swinging action of the traction member 2-3. The separation position hook 2-1-1 on the linkage member 2-1 disengages from the movable part. The linkage member 2-1, which moves to the left, moves the screw locking member 1-3 to the left simultaneously, so that the head end of the screw locking member 1-3 disengages from the screw locking slot 5-1-1, releasing the lock on the push screw 5-1. The movable part is in the position unlocked state.

[0199] like Figure 27 and 28As shown, the push screw 5-1 is cranked by the handle 8, and the push screw 5-1 engages with the push mating part 5-2, pushing the movable part to move. After the movable part leaves the disengaged position, the position unlock button 17 is released. Because of the obstruction of the limiting protrusion 28 on the position positioning mating part 1-8, the position positioning mechanism 1 will not reset. When the movable part is pushed to the test position, the position positioning part 1-2 has disengaged from the obstruction of the limiting protrusion 28. The position positioning drive part 1-1 swings back to its original position under the action of the first torsion spring 1-5. The position positioning drive part 1-1 drives the screw locking part 1-3 to move to the right. The head end of the screw locking part 1-3 is inserted into the screw locking slot 5-1-1 to lock the push screw 5-1. The position positioning mechanism 1 resets to the positioning state, and the movable part is in the position positioning state. The movable part is positioned in the test position.

[0200] The swing reset of the position positioning drive 1-1 also drives the linkage 2-1 to move to the right through the lead screw locking 1-3, so that the position unlocking operation mechanism 2 is reset to the initial state and the position unlocking button 17 is reset.

[0201] When the movable part is positioned at the test position, the position display mechanism 4 displays the position mark representing the test through the position display window 19, and the auxiliary circuit moving plug and the auxiliary circuit stationary plug on the movable part are connected.

[0202] The test proceeds to the connection position: such as Figure 29 and 30 As shown, the user presses and holds the position unlock button 17 again to unlock the screw. The user's unlocking operation releases the lock on the lead screw 5-1, and the movable part is in the position unlocked state.

[0203] like Figures 31-32 As shown, the push screw 5-1 is cranked by the handle 8, and the push screw 5-1 engages with the push mating part 5-2 to move the movable part. After the movable part leaves the test position, the position unlock button 17 is released. Because of the obstruction of the limiting protrusion 28 on the position positioning mating part 1-8, the position positioning mechanism 1 will not reset. When the movable part is pushed to the connection position, the position positioning part 1-2 has disengaged from the obstruction of the limiting protrusion 28. The position positioning drive part 1-1 swings back to its original position under the action of the first torsion spring 1-5. The position positioning drive part 1-1 drives the screw locking part 1-3 to move to the right. The head end of the screw locking part 1-3 is inserted into the screw locking slot 5-1-1 to lock the push screw 5-1. The position positioning mechanism 1 resets to the positioning state, and the movable part is in the position positioning state. The movable part is positioned in the connection position.

[0204] The swing reset of the position positioning drive 1-1 also drives the linkage 2-1 to move to the right through the lead screw locking 1-3, so that the position unlocking operation mechanism 2 is reset to the initial state and the position unlocking button 17 is reset.

[0205] When the movable part is positioned at the connection position, the position display window 19 displays a position indicator representing the connection, and the main circuit moving plug and the main circuit stationary plug on the movable part are connected.

[0206] When the crank handle 8 is pulled out, the anti-misoperation swing component 9-1 of the anti-misoperation position unlocking mechanism 9 swings back to the locked position under the action of the tension spring 9-5, locking the position unlocking operation mechanism 2 in the initial state. The position unlocking button 17 cannot be pressed, preventing accidental operation.

[0207] The closing operation is performed after the movable part is positioned in the connection position: For example... Figures 34-36 As shown, the circuit breaker is closed by rotating the opening / closing handle 18. The closing interlocking component 6-2, which is linked to the opening / closing shaft 6-1 of the circuit breaker, moves downward and is embedded in the closing interlocking slot 2-1-2 on the linkage component 2-1 to perform closing interlocking. The position unlocking operation mechanism 2 is locked by the closing interlocking mechanism 6 and cannot be unlocked. The hand-cranked push mechanism 5 is also locked until the circuit breaker is opened by rotating the opening / closing handle 18. The closing interlocking component 6-2 moves upward and disengages from the closing interlocking slot 2-1-2 on the linkage component 2-1, thus releasing the lock on the position unlocking operation mechanism 2.

[0208] Pull-out type unit: such as Figure 33 As shown, the above steps are reversed to move the movable part to the separation position, while the position unlocking mechanism 2 is in the initial state. Then, the user presses and holds the unit unlock button 16 to unlock the unit. The first unit locking member and the second unit locking member of the unit locking mechanism 3 disengage from the position positioning slots 7 of the first unit locking engagement member and the second unit locking engagement member, respectively, releasing the lock on the pull-out unit. At the same time, the unit locking drive member 3-1 can hook the movable part through the step between the avoidance section 3-1-1-1 and the blocking section 3-1-1-2, combining the movable part and the fixed part into a whole, and the pull-out unit can be pulled out as a whole.

[0209] After the pull-out unit is pulled out of the separation position, the unit unlock button 16 can be released because the separation position hook 2-1-1 on the linkage 2-1 hooks the movable part, and the movable part and the fixed part are still combined into a whole, so the entire pull-out unit can be pulled out.

[0210] The interlocking functions of this partially movable, position-operated pull-out unit assembly are as follows:

[0211] like Figure 36As shown, when the circuit breaker is in the closed state, the closing interlocking part 6-2 of the closing interlocking mechanism 6 is embedded in the closing interlocking slot 2-1-2 of the linkage part 2-1 of the position unlocking operation mechanism 2. The position unlocking operation mechanism 2 is locked by the closing interlocking mechanism 6 and cannot be unlocked until the circuit breaker is opened by rotating the opening and closing handle 18.

[0212] like Figure 35 As shown, when the position unlocking operation mechanism 2 is in the unlocked state, the closing interlocking part 6-2 and the closing interlocking slot 2-1-2 of the linkage part 2-1 are misaligned, and the linkage part 2-1 blocks the closing interlocking part 6-2 from descending to the low point, so the circuit breaker cannot be closed.

[0213] The interlocking part 3-1-1 of the unit locking mechanism 3 ensures that the unit locking mechanism 3 can only be switched to the unlocked state when the movable part is in the separated position. Moreover, even in the separated position, as long as the crank handle 8 is inserted and passes through the handle interlocking insertion port 3-3-1 of the interlocking link 3-3, the unit locking mechanism 3 is locked and cannot be unlocked, making it impossible to pull out the removable unit. At the same time, when the unit locking mechanism 3 is switched to the unlocked state, the handle interlocking insertion port 3-3-1 is misaligned with the insertion channel of the crank handle 8 as the interlocking link 3-3 moves, blocking the insertion channel of the crank handle 8. The crank handle 8 cannot be inserted into the movable part, and the hand-cranked push mechanism 5 cannot be manually pushed.

[0214] The unit locking mechanism 3 and the position unlocking operation mechanism 2 are interlocked through the interlocking link 3-3 and the first interlocking structure 3-3-2 and the second interlocking structure 2-1-3 on the linkage 2-1, so that the unit locking mechanism 3 and the position unlocking operation mechanism 2 cannot be in the unlocked state at the same time.

[0215] After the crank handle 8 is pulled out, the anti-misoperation position unlocking mechanism locks the position unlocking operation mechanism 2 in the initial state, and the position unlocking button 17 is in an unpressable state. After the movable part is positioned in the separated position and the crank handle 8 is pulled out, when performing the pull-out unit operation, because the position unlocking button 17 is in an unpressable state, the operator can only press the unit unlocking button 16, effectively preventing operator misoperation.

Claims

1. A removable, partially operable extractable unit, characterized in that, include: The fixed part has a position unlocking operation mechanism (2), which has an initial state and an unlocking state. The position unlocking operation mechanism (2) is activated by the user's unlocking operation and switches from the initial state to the unlocking state. The movable part is connected to the rear of the fixed part in a forward and backward translational manner. The movable part has a position positioning mechanism (1) and a hand-cranked propulsion mechanism (5). The hand-cranked propulsion mechanism (5) cooperates with the propulsion fitting (5-2) on the unit chamber to push the movable part to move forward and backward. The position positioning mechanism (1) is used to position the movable part. The location unlocking operation mechanism (2) has a linkage (2-1), which extends to the location positioning mechanism (1) and works in conjunction with the location positioning mechanism (1). When the location unlocking operation mechanism (2) switches to the unlocked state, the location unlocking operation mechanism (2) unlocks the location positioning mechanism (1) through the linkage (2-1).

2. The removable portion position-operable pull-out unit according to claim 1, characterized in that: The position unlocking mechanism (2) uses the linkage (2-1) to move in the left and right directions to position the unlocking position positioning mechanism (1).

3. The removable portion position-operable pull-out unit according to claim 2, characterized in that: The fixed part also has a closing interlocking mechanism (6), which is installed on the fixed part. The closing interlocking mechanism (6) has a closing interlocking component (6-2) that is linked to the opening and closing shaft (6-1). The linkage (2-1) has a closing interlocking slot (2-1-2) that cooperates with the closing interlocking component (6-2). The closing interlocking mechanism (6) performs closing interlocking by moving the closing interlocking component (6-2) downward and embedding it into the closing interlocking slot (2-1-2).

4. The removable portion position-operable pull-out unit according to claim 2, characterized in that: The linkage (2-1) has a separation position hook (2-1-1), which is configured to hook the hook engagement part of the movable part when the movable part is in the separation position, so that the fixed part and the movable part are connected as a whole and can move together. When the linkage (2-1) is translated to unlock the position positioning mechanism (1), it disengages from the hook engagement part of the movable part and releases the movable part.

5. The removable portion position-operable pull-out unit according to claim 1, characterized in that: The position positioning mechanism (1) has a positioning state and an unlocking state. When the position positioning mechanism (1) is in the positioning state, the position positioning mechanism (1) positions the movable part. When the position positioning mechanism (1) is in the unlocking state, the position positioning mechanism (1) releases the position positioning of the movable part. The position positioning mechanism (1) and the position unlocking operation mechanism (2) are respectively reset to the positioning state and the initial state by their respective elastic reset components; Alternatively, the position positioning mechanism (1) and the position unlocking operation mechanism (2) share the elastic reset element of one of the mechanisms to reset to the positioning state and the initial state.

6. The removable portion position-operable pull-out unit according to claim 2, characterized in that: The position unlocking operation mechanism (2) includes an unlocking action conversion mechanism and a linkage (2-1). The linkage (2-1) is slidably mounted on the fixed part. The unlocking action conversion mechanism is linked with the linkage (2-1) to drive the linkage (2-1) to move. The unlocking action conversion mechanism is configured to convert the user's unlocking operation into a driving action that drives the linkage (2-1) to move.

7. The removable portion position-operable pull-out unit according to claim 6, characterized in that: The unlocking action conversion mechanism includes a position unlocking component (2-2) and a traction component (2-3). The position unlocking component (2-2) is used to cooperate with the position unlocking button (17) on the unit door (15) to transmit the user's unlocking operation. The traction component (2-3) is swayably mounted on the fixed part in the horizontal plane. The position unlocking component (2-2) is hinged to the traction component (2-3). Under the user's unlocking operation, the position unlocking component (2-2) drives the traction component (2-3) to swing. The traction component (2-3) is linked with the linkage component (2-1) so that the linkage component (2-1) is translated under the swinging action of the traction component (2-3).

8. The removable portion position-operable pull-out unit according to claim 1, characterized in that: The positioning mechanism (1) positions the movable part by locking the hand-cranked propulsion mechanism (5); Alternatively, the positioning mechanism (1) has a positioning element (1-2) that extends downward to the unit chamber to cooperate with the positioning mating element (1-8) on the unit chamber. The positioning mating element (1-8) has a positioning slot (7). The positioning mechanism (1) positions the movable part by embedding the positioning element (1-2) into the positioning slot (7).

9. The removable portion position-operated pull-out unit according to claim 1 or 6, characterized in that: The linkage is a toggle-type linkage.

10. The removable portion position-operable extractable unit according to claim 5, characterized in that: The position unlocking operation mechanism (2) uses the linkage (2-1) to translate in the left and right directions to position the unlocking position positioning mechanism (1); The hand-cranked propulsion mechanism (5) moves the movable part back and forth by cooperating with the propulsion fitting (5-2) on the unit chamber through the propulsion screw (5-1); The position positioning mechanism (1) includes a lead screw locking member (1-3), which is slidably mounted on the movable part. When the position positioning mechanism (1) is in the positioning state, the lead screw locking member (1-3) locks the push lead screw (5-1). When the linkage member (2-1) switches the position positioning mechanism (1) from the positioning state to the unlocking state, the lead screw locking member (1-3) moves to one side to release the lock on the push lead screw (5-1). The specific structure of the linkage component (2-1) and the position positioning mechanism (1) is as follows: the lead screw locking component (1-3) has a second linkage slot (25), the linkage component (2-1) extends into the second linkage slot (25), when the movable part moves back and forth, the linkage component (2-1) slides relative to the lead screw locking component (1-3) in the second linkage slot (25), when the linkage component (2-1) translates, the linkage component (2-1) moves the lead screw locking component (1-3) to translate.

11. The removable portion position-operable extractable unit according to claim 1, characterized in that: The fixed part also has an anti-misoperation position unlocking mechanism (9), which includes an anti-misoperation swing member (9-1) and an elastic reset member. The anti-misoperation swing member (9-1) is swingably mounted on the fixed part in the horizontal plane. The anti-misoperation swing member (9-1) has a locked position and an unlocked position. Under the action of the elastic reset member, the anti-misoperation swing member (9-1) swings back to the locked position. The anti-misoperation swing member (9-1) has an anti-misoperation mechanism drive part (9-2) and a locking part (9-3). The anti-misoperation mechanism drive part (9-2) has a crank for operating the hand-cranked propulsion mechanism (5). The handle (8) is driven by a drive ramp, and the locking part (9-3) is locked to the linkage (2-1) to lock the position unlocking operation mechanism (2) in the initial state. When the anti-misoperation swinging part (9-1) is in the locked position, the anti-misoperation mechanism drive part (9-2) is in the insertion channel of the crank handle (8), and the locking part (9-3) enters the position locked to the linkage (2-1). When the crank handle (8) is inserted, the crank handle (8) drives the anti-misoperation swinging part (9-1) to swing to the unlock position through the drive ramp, and the locking part (9-3) exits the position locked to the linkage (2-1).

12. The removable portion position-operable extractable unit according to claim 11, characterized in that: The locking part (9-3) is locked in place with the linkage (2-1) by hooking onto the locking engagement part on the linkage (2-1); The specific structure of the locking part (9-3) and the linkage (2-1) locking engagement is as follows: the front part of the linkage (2-1) has a vertical front end plate, and the front end plate has a locking groove (9-7) as the locking engagement part. The locking part (9-3) hooks the linkage (2-1) by embedding into the locking groove (9-7) to achieve the locking engagement with the linkage (2-1).

13. A removable, partially operable pull-out unit assembly, characterized in that, Includes a unit room and a removable portion of the unit room as described in claim 1, which can be operated at different positions.

14. The removable portion position-operable pull-out unit assembly according to claim 13, characterized in that: The fixed part also has a unit locking mechanism (3), which has a locked state and an unlocked state. The unit locking mechanism (3) includes a unit locking drive (3-1), a unit locking component (3-2), and an elastic reset component. The unit locking drive (3-1) is swayably mounted on the fixed part in the horizontal plane. The swaying position of the unit locking drive (3-1) includes a locked position and an unlocked position. The locked position and the unlocked position correspond to the locked state and the unlocked state of the unit locking mechanism (3), respectively. The unit locking mechanism (3) is reset to the locked state under the action of the elastic reset component and is activated by the user's unlocking operation to switch to the unlocked state. The unit chamber has a unit locking fitting (3-9), and the unit locking fitting (3-9) has a position positioning slot (7). The unit locking member (3-2) is mounted on the unit locking drive member (3-1) and swings with it. The unit locking member (3-2) extends downward to the unit chamber to cooperate with the unit locking mating member (3-9). When the unit locking drive member (3-1) is in the locked position, the unit locking member (3-2) is embedded in the position positioning slot (7) of the unit locking mating member (3-9) to lock the pull-out unit. When the unit locking drive member (3-1) swings to the unlocked position, the unit locking member (3-2) exits the position positioning slot (7) of the unit locking mating member (3-9) to release the lock on the pull-out unit. The unit locking drive (3-1) also has an interlocking part (3-1-1) extending into the movable part. The movable part has a position interlocking engagement structure located on the side of the unit locking drive (3-1) facing the unlocking position. The side profile of the interlocking part (3-1-1) facing the unlocking position of the unit locking drive (3-1) has a clearance section (3-1-1-1) and a blocking section (3-1-1-2). The clearance section (3-1-1-1) is concave relative to the blocking section (3-1-1-2). When the movable part is in the separated position, the clearance section (3-1-1-1) is opposite to the position interlocking engagement structure to allow the unit locking drive (3-1) to swing to the unlocking position. When the movable part leaves the separated position, the blocking section (3-1-1-2) abuts against the position interlocking engagement structure to prevent the unit locking drive (3-1) from swinging to the unlocking position.

15. The removable portion position-operable pull-out unit assembly according to claim 14, characterized in that: The unit locking mechanism (3) further includes an interlocking link (3-3), which is slidably mounted on the fixed part. The unit locking drive (3-1) is linked with the interlocking link (3-3) so that the interlocking link (3-3) moves horizontally under the swinging action of the unit locking drive (3-1). The interlocking link (3-3) has a handle interlocking insertion port (3-3-1) that allows the crank handle (8) of the hand-cranked propulsion mechanism (5) to pass through. When the drive unit (3-1) is in the locked position, the handle interlocking insertion port (3-3-1) is aligned with the insertion channel of the crank handle (8) used to operate the hand-cranked propulsion mechanism (5) to pass through the insertion channel. When the unit locking drive unit (3-1) swings to the unlocked position, the unit locking drive unit (3-1) drives the interlocking link (3-3) to translate. The handle interlocking insertion port (3-3-1) is misaligned with the insertion channel of the crank handle (8) as the interlocking link (3-3) translates to block the insertion channel. The interlocking link (3-3) also has a unit locking component (3-2), and the unit chamber has a unit locking component (3-9) that cooperates with the unit locking component (3-2). The unit locking component (3-2) on the unit locking drive component (3-1) is the first unit locking component, and the unit locking component (3-9) that cooperates with the first unit locking component is the first unit locking component. The unit locking component (3-2) on the interlocking link (3-3) is the second unit locking component, and the unit locking component (3-9) that cooperates with the second unit locking component is the second unit locking component. The first unit locking component and the second unit locking component are located on the left and right sides of the fixed part. When the first unit locking component is inserted into the position positioning slot (7) of the first unit locking component, the interlocking link (3-3) drives the second unit locking component to be inserted into the position positioning slot (7) of the second unit locking component simultaneously.

16. The removable portion position-operable pull-out unit assembly according to claim 14, characterized in that: The elastic reset member of the unit locking mechanism (3) acts on the unit locking drive member (3-1) to drive the unit locking drive member (3-1) to swing and reset to the locked position, thereby resetting the unit locking mechanism (3) to the locked state; The unit locking mechanism (3) also includes a unit unlocking component (3-4), which is used to cooperate with the unit unlocking button (16) on the unit door (15) to transmit the user's unlocking operation. The unit unlocking component (3-4) is hinged to the unit locking drive component (3-1), and the unit unlocking component (3-4) drives the unit locking drive component (3-1) to swing under the user's unlocking operation.

17. The removable portion position-operable pull-out unit assembly according to claim 15, characterized in that: The interlocking link (3-3) has a first interlocking structure (3-3-2), and the linkage (2-1) has a second interlocking structure (2-1-3). The first interlocking structure (3-3-2) and the second interlocking structure (2-1-3) are arranged opposite to each other. When the unit locking mechanism (3) is in the locked state and the position unlocking operation mechanism (2) is in the initial state, the first interlocking structure (3-3-2) and the second interlocking structure (2-1-3) are separated; When the unit locking mechanism (3) is in the unlocked state, the first interlocking structure (3-3-2) moves to a position that abuts against the second interlocking structure (2-1-3) to restrict the movement of the linkage (2-1), thereby restricting the position unlocking operation mechanism (2) to the initial state; When the position unlocking mechanism (2) is in the unlocked state, the second interlocking structure (2-1-3) moves to abut against the first interlocking structure (3-3-2) to restrict the movement of the interlocking link (3-3), thereby restricting the unit locking mechanism (3) to the locked state.

18. The removable portion position-operable pull-out unit assembly according to claim 17, characterized in that: The first interlocking structure (3-3-2) is a protrusion on the interlocking link (3-3), and the second interlocking structure (2-1-3) is the side of the linkage (2-1). The first interlocking structure (3-3-2) and the second interlocking structure (2-1-3) abut against each other through the side of the protrusion.

19. A removable, partially operable pull-out unit assembly, characterized in that, Includes a unit compartment and a removable portion of the unit compartment that can be operated at its position as described in claim 5. The hand-cranked propulsion mechanism (5) uses the propulsion screw (5-1) and the propulsion fitting (5-2) on the unit chamber to push the movable part to move back and forth. The position positioning mechanism (1) positions the movable part by locking the propulsion screw (5-1). The position positioning mechanism (1) includes a position positioning component (1-2) and a lead screw locking component (1-3). The position positioning component (1-2) extends downward to the unit chamber to cooperate with the position positioning mating component (1-8) on the unit chamber. The position positioning component (1-2) is linked with the lead screw locking component (1-3). The position positioning component (1-2) has a positioning position and an unlocking position, which correspond to the positioning state and unlocking state of the position positioning mechanism (1) respectively. The position positioning mating component (1-8) has a limiting protrusion (28). The limiting protrusion (28) is used to prevent the position positioning component (1-2) from resetting to the positioning position when the movable part leaves the previous position but does not enter the next position. The lead screw locking component (1-3) is slidably mounted on the movable part. The side of the push lead screw (5-1) has a lead screw locking slot (5-1-1). When the position positioning mechanism (1) is in the positioning state, the head end of the lead screw locking component (1-3) is inserted into the lead screw locking slot (5-1-1) to lock the push lead screw (5-1). When the linkage component (2-1) switches the position positioning mechanism (1) from the positioning state to the unlocking state, the lead screw locking component (1-3) moves to one side, so that the head end of the lead screw locking component (1-3) disengages from the lead screw locking slot (5-1-1) and releases the lock on the push lead screw (5-1).

Images