A manually and automatically dual-mode driven drawer cabinet

Abstract

The application discloses a manual and automatic dual-mode driving drawer cabinet and belongs to the technical field of drawer cabinets. The drawer cabinet comprises a cabinet body, a plurality of drawer units are slidably arranged in the cabinet body, a control handle for controlling the on-off of a main circuit breaker is arranged at the front end of the drawer unit, and the drawer cabinet further comprises a controller for overall machine control, a manual locking and unlocking mechanism, an electric locking and unlocking mechanism and a drawer driving device. The manual opening and closing unit comprises straight grooves which are arranged on the two sides of the drawer unit, the first toothed rail bodies are embedded in the inner sides of the straight grooves, and the first toothed rail bodies are provided with first elastic components on the inner sides of the drawer unit. Limit frame seats are fixed on the two sides of the inner part of the drawer unit. The manual and automatic dual-mode driving drawer cabinet adopts a double-track structure, can automatically switch to respective running tracks when the mode is switched, and realizes manual and electric cooperation through the relatively meshed toothed rails, so that mechanical locking and unlocking of the drawer cabinet are realized.

Description

Technical Field

[0001] This invention specifically relates to a drawer cabinet with both manual and automatic driving modes, belonging to the field of drawer cabinet technology. Background Technology

[0002] Drawer-type switchgear is a closed enclosure made of steel plate, featuring a standardized drawer unit design. Electrical components for the incoming and outgoing circuits are installed in removable drawers. It is a core device in the power supply system for controlling, protecting, converting, and distributing electrical energy. It mainly consists of busbars, disconnect switches, circuit breakers, and instruments. Drawer-type low-voltage switchgear can be flexibly combined according to needs, supporting future expansion or modification, adapting to different power distribution scenarios, and possessing high reliability, safety, and interchangeability. Existing drawer-type switchgear, such as the Chinese Patent Publication No. CN120914663B, discloses a drawer-type low-voltage switchgear, including a switchgear body with a partition plate fixedly connected inside. A drawer slot is provided on one side of the switchgear body, and the drawer slot is fixedly connected to... The limit groove has a sliding plate internally connected to it, and a drawer cabinet is fixedly connected to the side of the sliding plate. When the drawer cabinet is pulled out, it drives the racks on both sides to move. When the racks move and contact the gears, the gears rotate. The rotation of the gears drives the support shaft to rotate, which in turn drives the rotating plate and the limit plate to rotate. However, existing drawer cabinets cannot achieve one-button sequential control, especially for the rocking-in and rocking-out control of the drawer unit. It is easy to make mistakes when the power is not turned off, which can easily generate electric arcs inside the drawer unit. In addition, existing electrically driven drawer cabinets require manual unlocking, which is inconvenient. Furthermore, drawer cabinets that combine manual and automatic operation use single-rail control. Once jamming occurs, the dual-mode drive will fail, and the drawer cabinet cannot be opened or closed. Summary of the Invention

[0003] To address the aforementioned issues, this invention proposes a dual-mode (manual and automatic) drive drawer cabinet. The manual and automatic modes employ a dual-track structure, automatically switching to their respective operating tracks during mode switching. Manual and electric operation are achieved through meshing racks and pinions, enabling mechanical locking and unlocking of the drawer cabinet.

[0004] The present invention relates to a manual and automatic dual-mode driven drawer cabinet, comprising a cabinet body, wherein multiple drawer units are slidably arranged within the cabinet body; a control handle for controlling the on / off state of a main circuit breaker is provided at the front end of each drawer unit; the main circuit breaker can be controlled to engage or disengage via the control handle; and a controller for overall machine control is also included. A manual locking and unlocking mechanism includes a manual opening and closing unit comprising straight grooves on both sides of a drawer unit, with a first gear rail embedded inside the straight grooves. A first elastic component is disposed inside the first gear rail on the drawer unit. Limiting frames are fixed on both sides inside the drawer unit, and guide bearings are fixed on opposite sides of the limiting frames. A control lever movably passes between the guide bearings and the limiting frames. Multiple cams that abut against the first elastic component are fixed on the control lever. A limiting plate is fixed inside the limiting frames on the control lever, and a first spring is sleeved between the limiting plate and the limiting frames. The control lever extends out of the drawer unit and is fixed with a handle. Multiple locking holes are provided on the drawer unit, and a lock that engages with the locking holes is fixed on the handle. When the manual locking / unlocking mechanism is locked or unlocked, pulling the handle outwards synchronously drives the control lever to guide it linearly along the limit frame and guide bearing. At this time, the limit plate compresses the first spring, and simultaneously, the locking pin on the handle disengages from the locking hole. Rotating the handle causes the locking pin to abut against the outside of the drawer unit. Then, continuing to rotate the handle causes the locking pin to automatically enter the locking hole when it aligns with the locking hole for other positions due to the elastic force of the first spring. At this time, the cam on the control lever abuts against the first elastic component, compressing the first elastic component and pushing the first gear rail body outwards; or causing the cam on the control lever to disengage from the first elastic component, releasing the compression force on the first elastic component and moving the first gear rail body inwards towards the drawer unit. An electric locking and unlocking mechanism includes a shift compartment seat fixed to both sides of the cabinet body. A reversing rod is mounted on the inner side of the shift compartment seat via a bearing. A row of shifting discs is fixed on the reversing rod. Multiple protruding teeth are integrally formed on the shifting discs. The shifting discs are provided with missing tooth positions, and the missing tooth positions of each shifting disc are staggered. A groove is opened on the shift compartment seat facing the first toothed rail body. A second toothed rail body is movably fitted in the groove. A second elastic component is integrally formed on the back of the second toothed rail body. The protruding teeth abut against the second elastic component. After the second toothed rail body and the first toothed rail body are elastically pressed together, they mesh and lock in place. An encoder motor assembly is provided at the bottom of the reversing rod, and an encoder is provided at the top of the reversing rod. When the electric locking and unlocking mechanism is working, the encoder motor assembly drives the reversing rod to rotate. During rotation, the rotation angle is monitored in real time by the encoder. When it is necessary to mechanically unlock a certain drawer unit, the encoder motor assembly drives the reversing rod to rotate to a set angle. At this time, the missing tooth position on the shift plate corresponding to that drawer unit is directly facing the drawer unit; the missing tooth positions on the shift plates corresponding to other drawer units are all offset from the drawer units. At this time, the missing tooth position is directly facing the second elastic component, the elastic force of the second elastic component is released, and the second toothed rail moves towards the inside of the shift compartment seat; realizing the separation of the first toothed rail and the second toothed rail until the protrusion on the shift plate abuts against the second elastic component again, and compresses the second elastic component, thereby causing the first toothed rail and the second toothed rail to elastically press together again. A pull-out actuator is fixed between the cabinet and the drawer unit; the pull-out actuator can drive the drawer unit to be pulled out or pushed in along the cabinet.

[0005] Furthermore, the pull-out actuator includes a lead screw slide fixed to the bottom of the drawer unit via a support plate. One end of the lead screw of the lead screw slide is connected to a drive motor via an electromagnetic clutch, and the other end is fixed with a crank handle. The slider of the lead screw slide is fixed to the bottom surface of the drawer unit. In the initial state, the electromagnetic clutch is disengaged, and the crank handle can drive the lead screw to rotate. The lead screw can drive the slider to slide linearly, thereby driving the drawer unit to slide in and out. When the automatic mode is selected, the electromagnetic clutch is engaged. At this time, the drive motor can drive the lead screw to rotate synchronously via the electromagnetic clutch, and the lead screw can drive the slider to slide synchronously, thereby driving the drawer unit to slide in and out.

[0006] Furthermore, the pull-out actuator includes multiple sets of slide rail seats fixed to both sides of the cabinet body. Dovetail strips are slidably arranged on the inner side of each slide rail seat. A dovetail slide rail is integrally formed at the front end of each dovetail strip. A slide plate seat is slidably arranged between two opposing dovetail slide rails. The drawer unit is fixed to the top surface of the slide plate seat. A sliding groove is formed on the dovetail strip. A drive rack is fixed to the top and bottom surfaces of the dovetail slide rail. A drive shaft passes through the front end of the sliding groove. A drive gear plate that meshes with the drive rack is rolled on the drive shaft. An electromagnetic clutch is fixed between the drive gear plate and the drive shaft. The top and bottom of the drive shaft are fixed to the top and bottom of the cabinet body via bearings. Two pulleys are fixed to the bottom of the cabinet body, and a synchronous belt is sleeved on each pulley. The middle of the synchronous belt is sleeved onto the drive pulley on the pull-out motor assembly.

[0007] When the drawer unit is in automatic mode, it automatically moves the drawer units in and out. Specifically, when a drawer unit is selected, the electric locking and unlocking mechanism unlocks it. Then, the corresponding electromagnetic clutch of that drawer unit engages. At this point, the drive shaft engages with the drive gear plate via the electromagnetic clutch, while the other drive gear plates remain disengaged from the drive shaft. The pulley motor assembly then drives the drive pulley to rotate, which in turn drives the belt pulley to rotate via a synchronous belt. The belt pulley synchronously drives the drive shaft to rotate, and the drive shaft, through the electromagnetic clutch, drives the engaged drive gear plate to rotate synchronously. The drive gear plate engages with the drive rack, causing the drive rack to slide linearly. The drive rack synchronously drives the dovetail slide rail along the slide rail seat. After sliding to the desired position, the pulley motor assembly stops, the electric locking and unlocking mechanism re-locks the drawer unit, and the corresponding electromagnetic clutch of the drawer unit disengages.

[0008] Furthermore, the shifting chamber seat is movably fitted with the sliding groove and fixed to the slide rail seat; the shifting chamber seat and the slide rail seat are installed in a cross-shaped perpendicular state.

[0009] Furthermore, the first elastic component includes a back plate fixed to the back of the first gear rail body, the bottom of the back plate being integrally formed with a limiting edge; a row of sliding holes is provided on the upper and lower parts of the back plate, a first guide post is slidably disposed in the sliding holes, one end of the first guide post is fixed to the drawer unit, and the other end is screwed with a first limiting nut, a second spring is disposed between the first guide post and the drawer unit and the back plate; the cam abuts against the back plate; the back of the second elastic component is integrally formed with a straight groove seat, a plurality of second guide posts are movably fitted at the top and bottom of the straight groove seat, one end of the second guide post is fixed to the shift compartment seat, and the other end is screwed with a second limiting nut, a third spring is disposed between the second guide post and the shift compartment seat and the straight groove seat; the protruding tooth abuts against the inner side of the straight groove seat.

[0010] The first elastic component operates as follows: In its natural state, the second spring releases its force, moving the back panel inwards towards the drawer unit. During this movement, the sliding hole of the back panel slides linearly along the first guide post until the first limit nut limits the position of the back panel. At this point, the first gear rail disengages from the second gear rail. When it is necessary to engage and lock the first and second gear rails, the cam abuts against the back panel, pushing the back panel against the second gear rail. At this point, the second spring is compressed until the first and second gear rails engage and lock. The working process of the elastic component is as follows: In its natural state, the third spring releases its elastic force, moving the straight groove seat towards the inside of the transposition chamber seat. During the movement, the straight groove seat slides linearly along the second guide post until the second limit nut limits the position of the straight groove seat. At this time, the second toothed rail body disengages from the first toothed rail body. When it is necessary to engage and lock the second toothed rail body with the first toothed rail body, the convex teeth abut against the straight groove seat, and the straight groove seat moves towards the first toothed rail body. At this time, the third spring is compressed until the second toothed rail body and the first toothed rail body engage and lock.

[0011] Furthermore, an auxiliary circuit breaker is connected in series on the auxiliary circuit of the main circuit breaker. The front end of the limiting frame is integrally formed with a side opening as a guide seat, and the control lever is integrally formed with a toothed column at the guide seat. A lever is provided on the inner side of the guide seat, and a toothed groove is opened on the inner side of the lever to engage with the toothed column. An opening is provided at the front end of the lever, and a swing arm is hinged to the inner side of the opening. A rubber rod is fixed at the front end of the swing arm, and tension springs are provided between the two sides of the swing arm and the lever. The rubber rod extends to the switching mechanical end of the auxiliary circuit breaker. The electrical control end and auxiliary contacts of the auxiliary circuit breaker are connected to the controller.

[0012] When the drawer cabinet is in automatic mode, the controller sends a signal to the auxiliary circuit breaker's electrical control terminal, enabling the auxiliary circuit breaker to close or open. This, in turn, connects or disconnects the auxiliary circuit of the main circuit breaker, causing the main circuit breaker to close or open. The controller also monitors whether the auxiliary circuit breaker has completed its opening or closing process via its auxiliary contacts. When the drawer cabinet is in manual mode, when the control lever drives the cam to rotate, locking and unlocking the first elastic component, the control lever synchronously drives the lever to rotate. The lever then drives the swing arm to swing in an arc. During this swing, the swing arm at the front end of the lever and the rubber rod move synchronously. The lever swings in an arc. When it approaches the mechanical switch end of the auxiliary circuit breaker, the rubber rod abuts against the mechanical switch, which can lock the mechanical switch upward or open it downward. As the lever continues to swing, the rubber rod disengages from the mechanical switch that completed the upward and downward movement. At this time, the auxiliary circuit breaker switches between closed and open states. When the lever drives the swing arm to swing in an arc, the rubber rod can adapt to the shape of the mechanical switch, thereby pulling or compressing the tension spring and causing the rubber rod to swing adaptively. The toothed column of the control lever can slide axially in a straight line along the toothed groove of the lever.

[0013] Furthermore, the controller is connected to a remote control terminal and a local control button; the local control button is fixed to the front end of the drawer unit, and sends a pull-out or reset signal to the controller through the remote control terminal or the local control button, and the controller automatically drives the drawer unit to reset or pull out.

[0014] Furthermore, a manual handle is fixed to the front end of the drawer unit. When the drawer unit is in manual drive mode, the drawer unit can be pulled out of the cabinet or pushed into the cabinet by the manual handle.

[0015] Furthermore, a first proximity switch is provided between the outside of the drawer unit and the first gear rail; a second proximity switch is provided between the outside of the shift compartment and the second gear rail; the first and second proximity switches are used to monitor whether the first and second gear rails are in the engaged or unlocked position.

[0016] Furthermore, an elastic pin is fixed to the outer wall of the shift compartment opposite the drawer unit, and an alignment hole is provided at the rear of the drawer unit opposite the elastic pin. An elastic unlocking button is fixed to the inner side of the drawer unit at the alignment hole. When the drawer unit is manually pulled outward, the outer wall of the drawer unit slides along the elastic pin. When the elastic pin is aligned with the alignment hole, the elastic pin releases its elasticity and engages with the alignment hole. At this time, the drawer unit is mechanically locked. When the drawer unit needs to be reset, press the elastic unlocking button and slide the drawer unit inward to disengage the elastic pin from the alignment hole and re-engage it to the outer wall of the drawer unit. At this time, the drawer unit can slide freely inward. In automatic mode, when the pull-out motor drives the drawer unit to pull outward to the set position (before the alignment hole reaches the alignment hole), it stops, and the drive rack and drive gear plate engage and lock, and the drawer unit is mechanically locked.

[0017] Compared with existing technologies, the manual and automatic dual-mode drive drawer cabinet of the present invention uses a slide rail base and a dovetail slide rail to form one set of sliding mechanisms, and a dovetail slide rail and a sliding plate base to form another set of sliding mechanisms. The two sets of sliding mechanisms form a double-rail structure, and different driving modes can automatically switch to their respective running tracks to avoid single-rail jamming. Furthermore, the second toothed rail body and the first toothed rail body are elastically pressed together to form an engagement lock position, realizing the cooperation between manual and electric locking positions to achieve mechanical locking and unlocking of the drawer cabinet. Whether the mechanical unlocking is operated manually or electrically, the second toothed rail body and the first toothed rail body can be separated by elastic action, so that the drawer unit in the separated engagement position can be manually or automatically driven for pulling out. In automatic driving, the controller controls the auxiliary circuit breaker to cut off the power and control the auxiliary circuit of the main circuit breaker to cut off or connect the power. In manual driving, the control lever drives the swing arm to swing, thereby realizing the mechanical terminal of the auxiliary circuit breaker to cut off or connect the power through the rubber rod, making the operation safer. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the manual and automatic dual-mode drive drawer cabinet of the present invention.

[0019] Figure 2 This is a schematic diagram of the installation structure of the drawer unit and the manual locking / unlocking mechanism of the present invention.

[0020] Figure 3 For the present invention Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0021] Figure 4 This is a schematic diagram of the mounting structure of the commutator, transposition disk, toothed cam, encoder motor assembly, and encoder of the present invention.

[0022] Figure 5 This is a schematic diagram of the electric locking and unlocking mechanism of the present invention.

[0023] Figure 6 This is a schematic diagram of the mounting structure of the second toothed rail and the second elastic component of the present invention.

[0024] Figure 7 This is a schematic diagram of one embodiment of the pull-out driver of the present invention.

[0025] Figure 8 This is a schematic diagram of another embodiment of the pull-out driver of the present invention.

[0026] Figure 9 For the present invention Figure 8 A magnified schematic diagram of the structure at point B in the middle.

[0027] Figure 10 This is a schematic diagram of the single-set dovetail slide rail drive structure of the present invention.

[0028] Figure 11 This is a schematic diagram of the mounting structure of the dovetail bar, sliding groove, drive rack, and drive gear disc of the present invention.

[0029] Reference numerals: 1. Cabinet body; 2. Drawer unit; 3. Control handle; 4. First gear rail body; 5. Limiting frame seat; 6. Control lever; 7. Cam; 8. Limiting plate; 9. First spring; 10. Grip; 11. Locking hole; 12. Locking pin; 13. Switching compartment seat; 14. Reversing lever; 15. Switching plate; 16. Protruding tooth; 17. Missing tooth position; 18. Second gear rail body; 19. Encoder motor assembly; 20. Encoder; 21. Lead screw slide; 22. Electromagnetic clutch; 23. Drive motor; 24. Crank handle; 25. Slide rail seat; 26. Dovetail bar; 2 7. Dovetail slide rail; 28. Slide plate seat; 29. ​​Sliding groove; 30. Drive rack; 31. Drive shaft; 32. Drive gear plate; 33. Belt reel; 34. Synchronous belt; 35. Pull-out motor assembly; 36. Back plate; 37. First guide post; 38. First limit nut; 39. Second spring; 40. Straight groove seat; 41. Second guide post; 42. Second limit nut; 43. Third spring; 44. Guide seat; 45. Gear post; 46. Lever; 47. Swing arm; 48. Rubber rod; 49. Tension spring; 50. Manual handle; 51. Elastic unlock button. Detailed Implementation

[0030] Example 1: like Figures 1 to 11 The manual and automatic dual-mode drive drawer cabinet shown includes a cabinet body 1, in which multiple drawer units 2 are slidably arranged; a control handle 3 for controlling the on / off of the main circuit breaker is provided at the front end of the drawer unit 2; the main circuit breaker can be controlled to engage or disengage through the control handle 3; and a controller for overall machine control is also included. A manual locking and unlocking mechanism is provided. The manual opening and closing unit includes straight grooves on both sides of the drawer unit 2. A first gear rail 4 is embedded in the inner side of the straight groove. A first elastic component is provided on the inner side of the first gear rail 4 inside the drawer unit 2. Limiting frame seats 5 are fixed on both sides inside the drawer unit 2. Guide bearings are fixed on opposite sides of the limiting frame seats 5. A control lever 6 is movably inserted between the guide bearings and the limiting frame seats 5. Multiple cams 7 that abut against the first elastic component are fixed on the control lever 6. A limiting plate 8 is fixed on the inner side of the limiting frame seats 5. A first spring 9 is sleeved between the limiting plate 8 and the limiting frame seats 5. The control lever 6 extends out of the drawer unit 2 and is fixed with a handle 10. Multiple locking holes 11 are provided on the drawer unit 2. A locking pin 12 that locks with the locking holes 11 is fixed on the handle 10. When the locking and unlocking mechanism is locked or unlocked, pulling the handle 10 outwards drives the control lever 6 to linearly guide it along the limit frame 5 and the guide bearing. At this time, the limit plate 8 compresses the first spring 9. Simultaneously, the locking pin 12 on the handle 10 disengages from the locking hole 11, and the handle 10 is rotated so that the locking pin 12 abuts against the outside of the drawer unit 2. Then, the handle 10 is rotated again. Due to the elastic force of the first spring 9, when the locking pin 12 aligns with the locking hole 11 for entering other positions, the locking pin 12 automatically enters the locking hole 11. At this time, the cam 7 on the control lever 6 abuts against the first elastic component, compressing the first elastic component and pushing the first gear rail 4 outwards; or the cam 7 on the control lever 6 disengages from the first elastic component, releasing the compression force of the first elastic component and moving the first gear rail 4 inwards towards the drawer unit 2. An electric locking and unlocking mechanism includes a shifting compartment seat 13 fixed to both sides inside the cabinet 1. A reversing rod 14 is mounted on the inner side of the shifting compartment seat 13 via a bearing. A row of shifting discs 15 is fixed on the reversing rod 14. Multiple protruding teeth 16 are integrally formed on each shifting disc 15. Missing tooth positions 17 are provided on each shifting disc 15, and the missing tooth positions 17 of each shifting disc 15 are staggered. A groove is opened on the shifting compartment seat 13 facing the first gear rail body 4. A second gear rail body 18 is movably fitted in the groove. A second elastic component is integrally formed on the back of the second gear rail body 18. The protruding teeth 16 abut against the second elastic component. After the second gear rail body 18 and the first gear rail body 4 are elastically pressed together, they mesh and lock in place. An encoder motor assembly 19 is provided at the bottom of the reversing rod 14, and an encoder 20 is provided at the top of the reversing rod 14. When the electric locking and unlocking mechanism is working, the encoder motor assembly 19 drives the reversing rod 14 to rotate. During rotation, the rotation angle is monitored in real time by the encoder 20. When it is necessary to mechanically unlock a certain drawer unit 2, the encoder motor assembly 19 drives the reversing rod 14 to rotate, so that the reversing rod 14 rotates to a set angle. At this time, the missing tooth position 17 on the shifting plate 15 corresponding to the drawer unit 2 is facing the drawer unit 2; the missing tooth positions 17 on the shifting plate 15 corresponding to other drawer units 2 are all offset from the drawer unit 2. At this time, the missing tooth position 17 is facing the second elastic component, the elastic force of the second elastic component is released, and the second toothed rail body 18 moves towards the inside of the shifting compartment seat 13; realizing the separation of the first toothed rail body 4 and the second toothed rail body 18 until the protruding tooth 16 on the shifting plate 15 abuts against the second elastic component again, and compresses the second elastic component, so that the first toothed rail body 4 and the second toothed rail body 18 are elastically pressed together again. A pull-out actuator is fixed between the cabinet body 1 and the drawer unit 2; the pull-out actuator can drive the drawer unit 2 to be pulled out or pushed in along the cabinet body 1.

[0031] The pull-out actuator includes a lead screw slide 21 fixed to the bottom of the drawer unit 2 via a support plate. One end of the lead screw of the lead screw slide 21 is connected to the drive motor 23 via an electromagnetic clutch 22, and the other end is fixed with a crank handle 24. The slider of the lead screw slide 21 is fixed to the bottom surface of the drawer unit 2. In the initial state, the electromagnetic clutch 22 is in the disengaged state, and the crank handle 24 can drive the lead screw to rotate, which in turn drives the slider to slide linearly, thereby driving the drawer unit 2 to slide in and out. When the automatic mode is selected, the electromagnetic clutch 22 is in the engaged state. At this time, the drive motor 23 can drive the lead screw to rotate synchronously via the electromagnetic clutch 22, which in turn drives the slider to slide synchronously, thereby driving the drawer unit 2 to slide in and out.

[0032] The pull-out actuator includes multiple sets of slide rail seats 25 fixed to both sides of the cabinet 1. Dovetail strips 26 are slidably arranged on the inner side of each slide rail seat 25. A dovetail slide rail 27 is integrally formed at the front end of each dovetail strip 26. A sliding plate seat 28 is slidably arranged between two opposing dovetail slide rails 27. The drawer unit 2 is fixed to the top surface of the sliding plate seat 28. A sliding groove 29 is formed on the dovetail strip 26. A drive rack 30 is fixed to the top and bottom surfaces of the dovetail slide rail 27. The front end of the sliding groove 29... A drive shaft 31 is inserted; a drive gear 32 that meshes with a drive rack 30 is rolled on the drive shaft 31; an electromagnetic clutch 22 is fixed between the drive gear 32 and the drive shaft 31; the top and bottom of the drive shaft 31 are fixed to the top and bottom of the inner side of the cabinet 1 by bearings; two drive shafts 31 are fixed to the bottom of the inner side of the cabinet 1 with a pulley 33, a synchronous belt 34 is sleeved on the pulley 33, and the middle part of the synchronous belt 34 is sleeved on the drive pulley of the pull-out motor assembly 35.

[0033] When the drawer cabinet is in automatic mode, the drawer unit 2 can be automatically driven to slide in and out. Specifically, when a drawer unit 2 is selected, the electric locking and unlocking mechanism unlocks that drawer unit 2. Then, the electromagnetic clutch 22 corresponding to that drawer unit 2 is engaged. At this time, the drive shaft 31 is engaged with the drive gear 32 through the electromagnetic clutch 22, while the other drive gears 32 remain separated from the drive shaft 31. At this time, the pull-out motor assembly 35 drives the drive pulley to rotate, and the drive pulley is connected to the synchronous belt 3. 4. Drive the pulley 33 to rotate, and the pulley 33 synchronously drives the drive shaft 31 to rotate. The drive shaft 31 drives the engaged drive gear 32 to rotate synchronously through the electromagnetic clutch 22. The drive gear 32 meshes with the drive rack 30, causing the drive rack 30 to slide linearly. The drive rack 30 synchronously drives the dovetail slide rail 27 to slide synchronously along the slide rail seat 25. After sliding to the position, the drawer motor assembly 35 stops, and the electric locking and unlocking mechanism locks the drawer unit 2 again. The electromagnetic clutch 22 corresponding to the drawer unit 2 disengages.

[0034] The shifting chamber seat 13 is movably fitted with the sliding groove 29 and fixed to the slide rail seat 25; the shifting chamber seat 13 and the slide rail seat 25 are installed in a cross-shaped perpendicular state.

[0035] The first elastic component includes a back plate 36 fixed to the back of the first gear rail 4. The bottom of the back plate 36 is integrally formed with a limiting edge. A row of sliding holes is opened on the upper and lower parts of the back plate 36. A first guide post 37 is slidably arranged in the sliding holes. One end of the first guide post 37 is fixed to the drawer unit 2, and the other end is screwed with a first limiting nut 38. A second spring 39 is arranged between the first guide post 37 and the drawer unit 2 and the back plate 36. The cam 7 abuts against the back plate 36. The back of the second elastic component is integrally formed with a straight groove seat 40. A plurality of second guide posts 41 are movably fitted on the top and bottom of the straight groove seat 40. One end of the second guide post 41 is fixed to the shift compartment seat 13, and the other end is screwed with a second limiting nut 42. A third spring 43 is arranged between the second guide post 41 and the shift compartment seat 13 and the straight groove seat 40. The protruding tooth 16 abuts against the inner side of the straight groove seat 40.

[0036] The first elastic component operates as follows: In its natural state, the second spring 39 releases its elastic force, causing the back plate 36 to move inward toward the drawer unit 2. During this movement, the sliding hole of the back plate 36 slides linearly along the first guide post 37 until the first limiting nut 38 limits the position of the back plate 36. At this point, the first gear rail 4 disengages from the second gear rail 18. When it is necessary to engage and lock the first gear rail 4 and the second gear rail 18, the cam 7 abuts against the back plate 36, causing the back plate 36 to move toward the second gear rail 18. At this point, the second spring 39 is compressed until the first gear rail 4 and the second gear rail 18 engage and lock. The working process of the sexual component is as follows: In the natural state, the third spring 43 releases its elastic force, moving the straight groove seat 40 towards the inside of the shift chamber seat 13. During the movement, the straight groove seat 40 slides linearly along the second guide post 41 until the second limit nut 42 limits the position of the straight groove seat 40. At this time, the second toothed rail body 18 disengages from the first toothed rail body 4. When it is necessary to engage and lock the second toothed rail body 18 and the first toothed rail body 4, the protruding tooth 16 abuts against the straight groove seat 40 and moves the straight groove seat 40 towards the first toothed rail body 4. At this time, the third spring 43 is compressed until the second toothed rail body 18 and the first toothed rail body 4 are engaged and locked.

[0037] An auxiliary circuit breaker is connected in series on the auxiliary circuit of the main circuit breaker. The front end of the limiting frame 5 is integrally formed with a guide seat 44 with a side opening. The control lever 6 is integrally formed with a toothed post 45 at the guide seat 44. A lever 46 is provided on the inner side of the guide seat 44. The inner side of the lever 46 has a toothed groove that engages with the toothed post 45. The front end of the lever 46 is provided with an opening. A swing arm 47 is hinged to the inner side of the opening. A rubber rod 48 is fixed to the front end of the swing arm 47. Tension springs 49 are provided on both sides of the swing arm 47 and between the lever 46. The rubber rod 48 extends to the switching mechanical end of the auxiliary circuit breaker. The electrical control end and auxiliary contacts of the auxiliary circuit breaker are connected to the controller.

[0038] When the drawer cabinet is in automatic mode, the controller sends a signal to the electrical control terminal of the auxiliary circuit breaker, enabling the auxiliary circuit breaker to close or open, thereby connecting or disconnecting the auxiliary circuit of the main circuit breaker, and causing the main circuit breaker to close or open. The controller also monitors whether the auxiliary circuit breaker has completed its opening or closing process via its auxiliary contacts. When the drawer cabinet is in manual mode, when the control lever 6 drives the cam 7 to rotate to lock and unlock the first elastic component, the control lever 6 synchronously drives the lever 46 to rotate. The lever 46 drives the swing arm 47 to swing in an arc. During the swing, the swing arm 47 at the front end of the lever 46 and the rubber rod 48 simultaneously swing in an arc. When the lever 46 swings towards the mechanical switch end of the auxiliary circuit breaker, the rubber rod 48 abuts against the mechanical switch, which can lock the mechanical switch upward or open it downward. As the lever 46 continues to swing, the rubber rod 48 disengages from the mechanical switch that has completed the upward and downward movements. At this time, the auxiliary circuit breaker switches between closed and open states. When the lever 46 drives the swing arm 47 to swing in an arc, the rubber rod 48 can adapt to the shape of the mechanical switch, thereby pulling or compressing the tension spring 49, so that the rubber rod 48 swings adaptively. The toothed column 45 of the control lever 6 can slide axially in a straight line along the tooth groove of the lever 46.

[0039] The controller is connected to a remote control terminal and a local control button; the local control button is fixed to the front end of the drawer unit 2, and sends a pull-out or reset signal to the controller through the remote control terminal or the local control button, and the controller automatically drives the drawer unit 2 to reset or pull out.

[0040] The front end of the drawer unit 2 is fixed with a manual handle 50. When the drawer unit 2 is in manual drive mode, the drawer unit 2 can be driven to be pulled out of the cabinet 1 or pushed into the cabinet 1 by the manual handle 50.

[0041] A first proximity switch is provided between the outside of the drawer unit 2 and the first gear rail 4; a second proximity switch is provided between the outside of the shift compartment seat 13 and the second gear rail 18; the first proximity switch and the second proximity switch are used to monitor whether the first gear rail 4 and the second gear rail 18 are in the engaged or unlocked position.

[0042] The outer wall of the shift compartment 13 is fixed with an elastic pin facing the drawer unit 2. The rear of the drawer unit 2 is provided with a positioning hole facing the elastic pin. An elastic unlocking button 51 is fixed on the inner side of the drawer unit 2 at the positioning hole. When the drawer unit 2 is manually pulled out, the outer wall of the drawer unit 2 slides along the elastic pin. When the elastic pin is aligned with the positioning hole, the elastic pin releases its elasticity and engages with the positioning hole. At this time, the position of the drawer unit 2 is mechanically locked. When the drawer unit 2 needs to be reset, press the elastic unlocking button 51 and slide the drawer unit 2 inward to disengage the elastic pin from the positioning hole and re-engage it with the outer wall of the drawer unit 2. At this time, the drawer unit 2 can slide freely inward. When in automatic mode, the drawer motor drives the drawer unit 2 to be pulled out to the set position (before the positioning hole is reached) and stops. The drive rack 30 and drive gear 32 engage and lock, and the position of the drawer unit 2 is mechanically locked.

[0043] The above embodiments are merely preferred embodiments of the present invention. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present invention are included within the scope of the present invention.

Claims

1. A dual-mode (manual and automatic) driven drawer cabinet, comprising a cabinet body, wherein multiple drawer units are slidably disposed within the cabinet body; a control handle for controlling the on / off state of a main circuit breaker is disposed at the front end of each drawer unit, characterized in that: It also includes the controller for overall machine control; A manual locking and unlocking mechanism includes a manual opening and closing unit comprising straight grooves on both sides of a drawer unit, a first toothed rail body embedded in the inner side of the straight grooves, and a first elastic component disposed on the inner side of the drawer unit; limit frames are fixed on both sides inside the drawer unit, and guide bearings are fixed on opposite sides of the limit frames; a control lever movably passes through the guide bearings and the limit frames; multiple cams are fixed on the control lever to abut against the first elastic component; a limit plate is fixed on the control lever inside the limit frames; a first spring is sleeved between the limit plate and the limit frames; the control lever extends out of the drawer unit and is fixed with a handle; multiple locking holes are opened on the drawer unit; and a locking pin is fixed on the handle to lock into the locking holes. An electric locking and unlocking mechanism includes a shift compartment seat fixed to both sides of the cabinet body. A reversing rod is mounted on the inner side of the shift compartment seat via a bearing. A row of shifting discs is fixed on the reversing rod. Multiple protruding teeth are integrally formed on the shifting discs. The shifting discs are provided with missing tooth positions, and the missing tooth positions of each shifting disc are staggered. A groove is opened on the shift compartment seat facing the first toothed rail body. A second toothed rail body is movably fitted in the groove. A second elastic component is integrally formed on the back of the second toothed rail body. The protruding teeth abut against the second elastic component. After the second toothed rail body and the first toothed rail body are elastically pressed together, they mesh and lock in place. An encoder motor assembly is provided at the bottom of the reversing rod, and an encoder is provided at the top of the reversing rod. A pull-out actuator, which is fixed between the cabinet and the drawer unit.

2. The manual and automatic dual-mode drive drawer cabinet according to claim 1, characterized in that: The pull-out driver includes a lead screw slide fixed to the bottom of the drawer unit via a support plate. One end of the lead screw of the lead screw slide is connected to a drive motor via an electromagnetic clutch, and the other end is fixed with a crank handle. The slider of the lead screw slide is fixed to the bottom surface of the drawer unit.

3. The manual and automatic dual-mode drive drawer cabinet according to claim 1, characterized in that: The pull-out actuator includes multiple sets of slide rail seats fixed to both sides of the cabinet body. Dovetail strips are slidably arranged on the inner side of each slide rail seat. A dovetail slide rail is integrally formed at the front end of each dovetail strip. A slide plate seat is slidably arranged between two opposing dovetail slide rails. The drawer unit is fixed to the top surface of the slide plate seat. A sliding groove is formed on the dovetail strip. A drive rack is fixed to the top and bottom surfaces of the dovetail slide rail. A drive shaft passes through the front end of the sliding groove. A drive gear plate that meshes with the drive rack is rolled on the drive shaft. An electromagnetic clutch is fixed between the drive gear plate and the drive shaft. The top and bottom of the drive shaft are fixed to the top and bottom of the cabinet body via bearings. Two pulleys are fixed to the bottom of the cabinet body, and a synchronous belt is sleeved on each pulley. The middle of the synchronous belt is sleeved onto the drive pulley on the pull-out motor assembly.

4. The manual and automatic dual-mode drive drawer cabinet according to claim 3, characterized in that: The shifting chamber seat is movably fitted with the sliding groove and fixed to the slide rail seat.

5. The manual and automatic dual-mode drive drawer cabinet according to claim 1, characterized in that: The first elastic component includes a back plate fixed to the back of the first gear rail body, the bottom of which is integrally formed with a limiting edge; a row of sliding holes is formed on the upper and lower parts of the back plate, and a first guide post is slidably arranged in the sliding holes. One end of the first guide post is fixed to the drawer unit, and the other end is screwed with a first limiting nut. A second spring is arranged between the first guide post and the drawer unit and the back plate; the cam abuts against the back plate; the back of the second elastic component is integrally formed with a straight groove seat, and multiple second guide posts are movably fitted at the top and bottom of the straight groove seat. One end of the second guide post is fixed to the shift compartment seat, and the other end is screwed with a second limiting nut. A third spring is arranged between the second guide post and the shift compartment seat and the straight groove seat; the protruding tooth abuts against the inner side of the straight groove seat.

6. The manual and automatic dual-mode drive drawer cabinet according to claim 1, characterized in that: An auxiliary circuit breaker is connected in series on the auxiliary circuit of the main circuit breaker. The front end of the limiting frame is integrally formed with a side opening as a guide seat, and the control lever is integrally formed with a toothed column at the guide seat. A lever is provided on the inner side of the guide seat, and a toothed groove is opened on the inner side of the lever to engage with the toothed column. An opening is provided at the front end of the lever, and a swing arm is hinged to the inner side of the opening. A rubber rod is fixed at the front end of the swing arm, and tension springs are provided between the two sides of the swing arm and the lever. The rubber rod extends to the switching mechanical end of the auxiliary circuit breaker. The electrical control end and auxiliary contacts of the auxiliary circuit breaker are connected to the controller.

7. The manual and automatic dual-mode drive drawer cabinet according to claim 1, characterized in that: The controller is connected to a remote control terminal and a field control button; the field control button is fixed to the front end of the drawer unit.

8. The manual and automatic dual-mode drive drawer cabinet according to claim 1, characterized in that: The drawer unit is equipped with a manual handle at the front end.

9. The manual and automatic dual-mode drive drawer cabinet according to claim 1, characterized in that: A first proximity switch is provided between the outside of the drawer unit and the first gear rail; a second proximity switch is provided between the outside of the shift compartment and the second gear rail.

10. The manual and automatic dual-mode drive drawer cabinet according to claim 1, characterized in that: The outer wall of the shift compartment is fixed with a flexible pin facing the drawer unit. The rear of the drawer unit is provided with an alignment hole facing the flexible pin. An elastic unlocking button is fixed on the inner side of the drawer unit at the alignment hole.

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