Electronic lock door handle clutch
By designing an electronic lock door handle clutch, the reversing process is simplified, solving the problems of complex structure and inconvenient reversing in existing technologies, and realizing convenient door handle direction adjustment and improved structural strength.
Patent Information
- Application Number
- CN202423235491.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Existing electronic lock door handle structures are complex, have many components, and are cumbersome to switch, making it difficult to easily change the usage method.
An electronic lock door handle clutch was designed, including components such as housing, cover plate, handle connecting rod, reversing plate, and rotary disc. The direction adjustment of the reversing plate can be achieved through simple disassembly and assembly operations. Combined with the linkage of return torsion spring, reversing pin and rotary disc, the reversing process is simplified.
It enables convenient reversing of electronic lock door handles, reduces component disassembly and assembly steps, improves structural strength, and achieves synchronous rotation of the reversing plate and the rotating disk without using smart lock components.
Smart Images
Figure CN223675992U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to door lock technical field, concretely is a kind of electronic lock door handle clutch. BACKGROUND
[0002] Door handle is an important component of door lock, by controlling door handle to drive door lock transmission member rotation, the opening of door lock can be realized. In actual life, different door opening and closing generally have two ways of opening from left or right, when door opening and closing is opened from left, door lock and door handle are installed on the left side of door opening and closing, generally need to control door handle clockwise rotation when opening door, to realize the opening of door lock, when door opening and closing is opened from right, door lock and door handle are installed on the right side of door opening and closing, generally need to control door handle counterclockwise rotation, to realize the opening of door lock.
[0003] At present, some electronic door locks with dual-purpose door handle structure appear on the market, which can be used for left door opening and right door opening. However, these dual-purpose door handle structures are mostly complex in structure, have many components, and are troublesome to reverse, and need to be disassembled and reassembled as a whole, and the convenience of reversing is poor. Therefore, the present application proposes an electronic lock door handle clutch. UTILITY MODEL CONTENTS
[0004] In view of the deficiencies of the prior art, the utility model provides an electronic lock door handle clutch, and the main purpose is to solve the technical problems existing in the background art.
[0005] To achieve the above purpose, the utility model is realized by the following technical scheme:
[0006] An electronic lock door handle clutch, comprising a shell, a cover plate, a handle connecting rod, a reversing piece, a rotating disc, the shell back is provided with a rotatingly connected handle connecting rod, one end of the handle connecting rod extending out of the shell is connected with a door handle, one end of the handle connecting rod located in the shell cavity is provided with a rotatingly connected reversing piece, the reversing piece rotates synchronously with the handle connecting rod, a reset torsional spring is arranged outside the handle connecting rod and located in the shell, the extended end of the reset torsional spring abuts against the inner side wall of the shell, a reversing pin detachably connected with the reversing piece is arranged on the outer surface of the reversing piece, one end of the rotating disc extends outward from the cover plate hole of the cover plate, and the other end of the rotating disc is movably connected with the handle connecting rod.
[0007] Further, the main panel of the shell is provided with an opening, the handle connecting rod is arranged through the opening of the shell, the lower side plate of the shell is provided with a slot matched with the cover plate, the long side top of the shell is provided with a reinforcing rib, and the reinforcing rib is an integral structure with the shell.
[0008] Further, the lower edge of the cover plate is provided with an insertion block matched with the slot of the shell, the insertion block is inserted into the slot, so that the cover plate is assembled with the shell.
[0009] Further, the end of the handle connecting rod connected with the commutating sheet is provided with an open slot, the inner ring of the commutating sheet is provided with a protrusion I, and the protrusion I of the commutating sheet is movably connected with the open slot of the handle connecting rod, so that the commutating sheet and the handle connecting rod rotate synchronously.
[0010] Further, the outer surface of the commutating sheet is provided with a threaded hole I, a protrusion II, a first clamping slot and a second clamping slot, the commutating pin is connected into the threaded hole I of the commutating sheet, the protrusion II is arranged on the outer surface of the commutating sheet and faces the bottom surface of the shell, and the first clamping slot, the threaded hole I, the second clamping slot and the protrusion II are distributed at equal intervals in a circle.
[0011] Further, the rotary disc is movably connected to the handle connecting rod, and the two stop portions are located below the reset torsion spring, the lower portion of the rotary disc is provided with a convex body, the bottom surface of the convex body is provided with a through hole, the through hole is provided with a starting pin, the starting pin is located directly below the clamping slot of the commutating sheet, and the starting pin is inserted into the clamping slot of the commutating sheet, so that the rotary disc and the commutating sheet rotate synchronously.
[0012] Further, the top portion of the rotary disc is provided with a shaft body, the shaft body is arranged through the cover hole of the cover plate, and the shaft surface of the shaft body is provided with a wire passing hole.
[0013] Further, the outer surface of the rotary disc is provided with a threaded hole III, and the outer surface of the commutating sheet is provided with a threaded hole II, the rotary disc and the commutating sheet are connected through a linkage pin arranged in the threaded hole III of the rotary disc and the threaded hole II of the commutating sheet, so that the rotary disc and the commutating sheet rotate synchronously.
[0014] Further, the smart lock assembly is arranged at the bottom of the shell and directly below the rotary disc, the smart lock assembly comprises a rear shell and a front shell clamped and connected, the top portion of the rear shell and the front shell is slidably connected with a top plate, the top portion of the top plate is in an arc-shaped structure, the upper arc surface of the top plate is attached to the bottom portion of the starting pin, the bottom portion of the top plate is slidably connected with a rotating rod, one end of the rear shell is provided with a motor, the output end of the motor and the bottom portion of the rotating rod are jointly connected with a gear set, and the bottom portion of the top plate and the outside of the rotating rod are connected with a spring, the gear set drives the rotating rod to rotate, and then drives the top plate to move upward or downward.
[0015] Compared with the prior art, the present application has the following beneficial effects:
[0016] 1. The electronic lock door handle clutch, only need to disassemble the reversing pin, the convex block of the reversing piece is removed from the opening slot of the handle connecting rod, the direction of the reversing piece is adjusted, and the handle connecting rod is reassembled, the rotating direction of the door handle can be selected according to the installation position of the door handle.
[0017] 2. The electronic lock door handle clutch, the lower side plate of the shell is provided with a slot matched with the cover plate, and the top of the long side of the shell is provided with a reinforcing rib, and the shell is an integral structure. By further providing a reinforcing rib on the top of the long side of the shell, the structure of this position is strengthened, and when the cover plate is assembled to the shell, the short side of the shell and the reinforcing rib are jointly stressed, further improving the stress structure strength of the whole shell.
[0018] 3. The electronic lock door handle clutch, the lower edge of the cover plate is provided with an insertion block matched with the slot of the shell, and the insertion block is inserted into the slot, so that the cover plate and the shell are assembled together. When the cover plate is assembled to the shell, only the insertion block needs to be inserted into the slot, overcoming the use of multiple screws to assemble the cover plate and the shell together, only one screw is needed to assemble the cover plate and the shell together, reducing the opening of multiple screw holes on the surface of the shell and the cover plate, causing the structure strength of the shell and the cover plate to be reduced.
[0019] 4. Another structure of the electronic lock door handle clutch is also provided, the outer surface of the reversing piece is further provided with a threaded hole two, the outer surface of the rotating disc is provided with a threaded hole three, and the threaded hole three of the rotating disc and the threaded hole two of the reversing piece are provided with a linkage pin. The linkage pin is connected into the threaded hole three of the rotating disc and the threaded hole two of the reversing piece, so that the rotating disc and the reversing piece rotate synchronously. The electronic lock door handle clutch of this structure can make the reversing piece and the rotating disc rotate synchronously without using the intelligent lock assembly. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 The electronic lock door handle clutch structure schematic diagram is shown;
[0021] Figure 2 The electronic lock door handle clutch structure schematic diagram is shown;
[0022] Figure 3 The shell and cover plate disassembly structure schematic diagram is shown;
[0023] Figure 4 The reversing piece, rotating disc and intelligent lock assembly disassembly structure schematic diagram is shown;
[0024] Figure 5 The handle connecting rod, reversing piece and rotating disc disassembly structure schematic diagram is shown;
[0025] Figure 6 The handle connecting rod, reversing piece and rotating disc assembly structure schematic diagram is shown;
[0026] Figure 7 The commutator segment structure schematic diagram is shown.
[0027] Figure 8 The rotating disc structure schematic diagram is shown.
[0028] Figure 9 The electronic lock door handle clutch internal structure schematic diagram is shown.
[0029] Figure 10 The electronic lock door handle clutch internal structure schematic diagram is shown.
[0030] Figure 11 The electronic lock door handle clutch internal structure schematic diagram is shown.
[0031] Figure 12 The intelligent lock assembly structure schematic diagram is shown.
[0032] Figure 13 The handle connecting rod, commutator segment, rotating disc exploded structure schematic diagram is shown.
[0033] Figure 14 The electronic lock door handle clutch internal structure schematic diagram of another structure is shown.
[0034] In the figure: 1, shell 2, cover plate 3, handle connecting rod 4, commutator segment 5, rotating disc 6, reset torsional spring 7, commutator pin 8, starting pin 9, intelligent lock assembly 10, linkage pin 11, opening 12, slot 13, reinforcing rib 21, plug 22, cover plate hole 23, screw 31, open slot 41, protrusion 42, threaded hole one 43, protrusion 44, first clamping groove 45, second clamping groove 46, threaded hole two 51, blocking part 52, convex body 53, through hole 54, shaft body 55, wire passing hole 56, threaded hole three 91, rear shell 92, front shell 93, top plate 94, rotating rod 95, motor 96, gear set 97, spring. DETAILED DESCRIPTION
[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0036] Please refer to Figures 1-2As shown in the technical scheme, the utility model provides an electronic lock door handle clutch, including casing 1, cover plate 2, handle connecting rod 3, reversing sheet 4, rotary disc 5, casing 1 back is provided with the handle connecting rod 3 of rotation connection, the one end of handle connecting rod 3 is stretched out from casing 1 and is connected with door handle, the one end of handle connecting rod 3 in the cavity of casing 1 is provided with the reversing sheet 4 of rotation connection, reversing sheet 4 and handle connecting rod 3 synchronous rotation, the outside of handle connecting rod 3 and located in the inside of casing 1 is provided with reset torsional spring 6, the extension end of reset torsional spring 6 is resisted and touches on the inside wall of casing 1, the outer surface of reversing sheet 4 is provided with reversing pin 7 of dismantling connection with reversing sheet 4, one end of rotary disc 5 is stretched out from the cover plate hole of cover plate 2 to the outside, the other end of rotary disc 5 is movably connected with handle connecting rod 3.
[0037] Please refer to Figure 3 As shown in the technical scheme, the utility model provides an electronic lock door handle clutch, including casing 1, cover plate 2, handle connecting rod 3, reversing sheet 4, rotary disc 5, casing 1 back is provided with the handle connecting rod 3 of rotation connection, the one end of handle connecting rod 3 is stretched out from casing 1 and is connected with door handle, the one end of handle connecting rod 3 in the cavity of casing 1 is provided with the reversing sheet 4 of rotation connection, reversing sheet 4 and handle connecting rod 3 synchronous rotation, the outside of handle connecting rod 3 and located in the inside of casing 1 is provided with reset torsional spring 6, the extension end of reset torsional spring 6 is resisted and touches on the inside wall of casing 1, the outer surface of reversing sheet 4 is provided with reversing pin 7 of dismantling connection with reversing sheet 4, one end of rotary disc 5 is stretched out from the cover plate hole of cover plate 2 to the outside, the other end of rotary disc 5 is movably connected with handle connecting rod 3.
[0038] Please refer to Figures 2-3 As shown in the technical scheme, the utility model provides an electronic lock door handle clutch, including casing 1, cover plate 2, handle connecting rod 3, reversing sheet 4, rotary disc 5, casing 1 back is provided with the handle connecting rod 3 of rotation connection, the one end of handle connecting rod 3 is stretched out from casing 1 and is connected with door handle, the one end of handle connecting rod 3 in the cavity of casing 1 is provided with the reversing sheet 4 of rotation connection, reversing sheet 4 and handle connecting rod 3 synchronous rotation, the outside of handle connecting rod 3 and located in the inside of casing 1 is provided with reset torsional spring 6, the extension end of reset torsional spring 6 is resisted and touches on the inside wall of casing 1, the outer surface of reversing sheet 4 is provided with reversing pin 7 of dismantling connection with reversing sheet 4, one end of rotary disc 5 is stretched out from the cover plate hole of cover plate 2 to the outside, the other end of rotary disc 5 is movably connected with handle connecting rod 3.
[0039] Please refer to 4-5, the one end of handle connecting rod 3 and reversing sheet 4 is equipped with opening slot 31, the inner ring of reversing sheet 4 is relatively extended and is equipped with lug I 41, lug I 41 of reversing sheet 4 and opening slot 31 of handle connecting rod 3 movably connected, make reversing sheet 4 and handle connecting rod 3 synchronous rotation. Dismantle reversing pin 7, remove lug I 41 of reversing sheet 4 from opening slot 31 of handle connecting rod 3, can adjust the direction of reversing sheet 4 to handle connecting rod 3, and reassemble, can according to the installation position of door handle select the rotation direction of door handle. Figure 10 As shown in the technical scheme, the utility model provides an electronic lock door handle clutch, including casing 1, cover plate 2, handle connecting rod 3, reversing sheet 4, rotary disc 5, casing 1 back is provided with the handle connecting rod 3 of rotation connection, the one end of handle connecting rod 3 is stretched out from casing 1 and is connected with door handle, the one end of handle connecting rod 3 in the cavity of casing 1 is provided with the reversing sheet 4 of rotation connection, reversing sheet 4 and handle connecting rod 3 synchronous rotation, the outside of handle connecting rod 3 and located in the inside of casing 1 is provided with reset torsional spring 6, the extension end of reset torsional spring 6 is resisted and touches on the inside wall of casing 1, the outer surface of reversing sheet 4 is provided with reversing pin 7 of dismantling connection with reversing sheet 4, one end of rotary disc 5 is stretched out from the cover plate hole of cover plate 2 to the outside, the other end of rotary disc 5 is movably connected with handle connecting rod 3. Figure 11 As shown in the technical scheme, the utility model provides an electronic lock door handle clutch, including casing 1, cover plate 2, handle connecting rod 3, reversing sheet 4, rotary disc 5, casing 1 back is provided with the handle connecting rod 3 of rotation connection, the one end of handle connecting rod 3 is stretched out from casing 1 and is connected with door handle, the one end of handle connecting rod 3 in the cavity of casing 1 is provided with the reversing sheet 4 of rotation connection, reversing sheet 4 and handle connecting rod 3 synchronous rotation, the outside of handle connecting rod 3 and located in the inside of casing 1 is provided with reset torsional spring 6, the extension end of reset torsional spring 6 is resisted and touches on the inside wall of casing 1, the outer surface of reversing sheet 4 is provided with reversing pin 7 of dismantling connection with reversing sheet 4, one end of rotary disc 5 is stretched out from the cover plate hole of cover plate 2 to the outside, the other end of rotary disc 5 is movably connected with handle connecting rod 3.
[0040] Please refer toFigure 7 As shown, the outer surface of the commutating segment 4 is provided with a threaded hole 42, a protrusion 43, a first clamping groove 44 and a second clamping groove 45, the commutating pin 7 is connected into the threaded hole 42 of the commutating segment 4, the protrusion 43 is arranged on the outer surface of the commutating segment 4 and faces the bottom surface of the shell 1, the first clamping groove 44, the threaded hole 42, the second clamping groove 45 and the protrusion 43 are distributed at equal intervals in a circle.
[0041] Please refer to Figures 5-6 As shown in FIGS. 7 and 8, the rotary disc 5 is provided with a stop portion 51 on opposite sides, the rotary disc 5 is movably connected to the handle connecting rod 3, and the two stop portions 51 are located below the reset torsion spring 6, the lower part of the rotary disc 5 is provided with a protrusion 52, the bottom surface of the protrusion 52 is provided with a through hole 53, the through hole 53 is provided with a starting pin 8, the starting pin 8 is located directly below the clamping groove of the commutating segment 4, and the starting pin 8 is connected into the clamping groove of the commutating segment 4, so that the rotary disc 5 rotates synchronously with the commutating segment 4. The purposes of the first clamping groove 44 and the second clamping groove 45 are to enable the starting pin 8 to be clamped therein. It should be noted that when the commutating pin 7 is a short head screw, the handle connecting rod 3 rotates, and the short head screw on the commutating segment 4 cannot touch the rotary disc 5, that is, only the commutating segment 4 rotates with the handle connecting rod 3, at this time the rotary disc 5 does not rotate, and the intelligent lock assembly 9 needs to be started to push the starting pin 8 to be clamped into the clamping groove of the commutating segment 4, so that the rotary disc 5 can rotate synchronously with the commutating segment 4. When the commutating pin 7 is a high head screw, the handle connecting rod 3 rotates, and the high head screw on the commutating segment 4 can touch the rotary disc 5, and the rotary disc 5 rotates in the rotating direction of the commutating segment 4 under the action of the high head screw. The top of the rotary disc 5 is provided with a shaft body 54, the shaft body 54 is arranged through the cover hole 22 of the cover plate 2, the shaft surface of the shaft body 54 is provided with a wire passing hole 55, the wire passing hole 55 is used for guiding the wire to pass through, so as to facilitate the electrical connection between the control components of the intelligent lock.
[0042] Please refer to Figure 12 As shown in FIG. 9, the intelligent lock assembly 9 is arranged at the bottom of the shell 1 and directly below the rotary disc 5, the intelligent lock assembly 9 comprises a rear shell 91 and a front shell 92 which are clamped and connected, the top of the rear shell 91 and the front shell 92 is slidably connected with a top plate 93, the top of the top plate 93 is arc-shaped, the upper arc surface of the top plate 93 is attached to the bottom of the starting pin 8, the bottom of the top plate 93 is slidably connected with a rotating rod 94, one end of the rear shell 91 is provided with a motor 95, the output end of the motor 95 and the bottom of the rotating rod 94 are jointly connected with a gear set 96, the bottom of the top plate 93 and outside of the rotating rod 94 are connected with a spring 97, the gear set 96 drives the rotating rod 94 to rotate through the servo motor 95, and then drives the top plate 93 to move upward or downward.
[0043] Please refer to Figures 13-14 As shown in FIG. 10, Figure 13 As shown in FIG. 11, which is an exploded structure diagram of the handle connecting rod, the commutating segment and the rotary disc, Figure 14The hand connecting rod, the reversing piece, the rotary disc are assembled into the structure diagram of the shell 1. The outer surface of the reversing piece 4 is also provided with a threaded hole two 46, the outer surface of the rotary disc 5 is provided with a threaded hole three 56, the threaded hole three 56 of the rotary disc 5 and the threaded hole two 46 of the reversing piece 4 are provided with a linkage pin 10, the linkage pin 10 is connected into the threaded hole three 56 of the rotary disc 5 and the threaded hole two 46 of the reversing piece 4, so that the rotary disc 5 and the reversing piece 4 are synchronously rotated. The purpose of the linkage pin 10 is to connect the reversing piece 4 and the rotary disc 5 together, so that the reversing piece 4 and the rotary disc 5 are synchronously rotated. It should be noted that the electronic lock door handle clutch under this structure does not need to use the smart lock assembly 9, when it is necessary to rotate, the lock body motor drives the pin shaft, and then the pin shaft drives the reversing piece 4 and the rotary disc 5 to rotate, one end of the pin shaft is connected to the motor, the other end of the pin shaft is arranged in the inner diameter of the rotary disc 5, and then the pin shaft transmits the synchronous rotation of the reversing piece 4 and the rotary disc 5.
Claims
1. An electronic lock door handle decoupler, comprising: The utility model relates to a door handle with the functions of automatic locking and unlocking, including shell (1), cover plate (2), handle connecting rod (3), commutating sheet (4), rotary disc (5), the back of shell (1) is provided with the handle connecting rod (3) of rotation connection, the one end of handle connecting rod (3) is connected with door handle and stretches out shell (1), the one end of handle connecting rod (3) in the cavity of shell (1) is provided with the commutating sheet (4) of rotation connection, commutating sheet (4) rotates with handle connecting rod (3) synchronously, the outside of handle connecting rod (3) and located inside shell (1) is provided with reset torsional spring (6), the extension end of reset torsional spring (6) is resisted and touches the inside wall of shell (1), the outer surface of commutating sheet (4) is provided with commutating pin (7) with commutating sheet (4) dismounting connection, one end of rotary disc (5) is stretched out from the cover plate hole of cover plate (2) to the outside, the other end of rotary disc (5) is movably connected with handle connecting rod (3), one end of handle connecting rod (3) is provided with open slot (31) with commutating sheet (4) is connected, the inner ring of commutating sheet (4) is relatively extended and is provided with lug I (41), lug I (41) of commutating sheet (4) is movably connected with open slot (31) of handle connecting rod (3), makes commutating sheet (4) rotate with handle connecting rod (3) synchronously.
2. The electronic lock door handle decoupler of claim 1, wherein, The main panel of shell (1) is provided with an opening (11), the handle connecting rod (3) is provided through the opening (11) of the shell (1), the lower side plate of the shell (1) is provided with a slot (12) matched with the cover plate (2), the long side of the top of the shell (1) is provided with a reinforcing rib (13), and the reinforcing rib (13) and the shell (1) are an integral structure.
3. The electronic lock door handle decoupler of claim 2, wherein, The lower edge of the cover plate (2) is provided with an insertion block (21) matched with the slot (12) of the shell (1), the insertion block (21) is inserted into the slot (12), so that the cover plate (2) and the shell (1) are assembled together.
4. The electronic lock door handle decoupler of claim 1, wherein, The outer surface of the commutating sheet (4) is provided with a threaded hole (42), a lug II (43), a first clamping groove (44) and a second clamping groove (45), the commutating pin (7) is connected into the threaded hole (42) of the commutating sheet (4), the lug II (43) is arranged on the outer surface of the commutating sheet (4) and faces the bottom surface of the shell (1), the first clamping groove (44), the threaded hole (42), the second clamping groove (45) and the lug II (43) are distributed at equal intervals in a circle.
5. The electronic lock door handle decoupler of claim 1, wherein, The rotary disc (5) is provided with a stop portion (51) on opposite sides, the rotary disc (5) is movably connected to the handle connecting rod (3), and the two stop portions (51) are located below the reset torsional spring (6), the rotary disc (5) is provided with a protrusion (52) at the lower portion, the bottom surface of the protrusion (52) is provided with a through hole (53), the through hole (53) is provided with a starting pin (8), the starting pin (8) is located directly below the clamping groove of the commutating sheet (4), and the starting pin (8) is inserted into the clamping groove of the commutating sheet (4), so that the rotary disc (5) and the commutating sheet (4) rotate synchronously.
6. The electronic lock door handle decoupler of claim 5, wherein, The top of the rotating disc (5) is provided with a shaft body (54) which is arranged through the cover hole (22) of the cover plate (2) and the shaft surface of the shaft body (54) is provided with a wire passing hole (55).
7. The electronic lock door handle decoupler of claim 6, wherein, The outer surface of the commutating segment (4) is further provided with a threaded hole two (46), the outer surface of the rotating disc (5) is provided with a threaded hole three (56), the threaded hole three (56) of the rotating disc (5) and the threaded hole two (46) of the commutating segment (4) are provided with a linkage pin (10), the linkage pin (10) is connected to the threaded hole three (56) of the rotating disc (5) and the threaded hole two (46) of the commutating segment (4) to make the rotating disc (5) and the commutating segment (4) rotate synchronously.
8. The electronic lock door handle decoupler of claim 1, wherein, Further comprising a smart lock assembly (9) which is arranged at the bottom of the shell (1) and directly below the rotating disc (5), the smart lock assembly (9) comprises a rear shell (91) and a front shell (92) which are snap-connected, the top of the rear shell (91) and the front shell (92) is slidingly connected with a top plate (93), the top of the top plate (93) is arc-shaped structure, the upper arc surface of the top plate (93) is attached to the bottom of the starting pin (8), the bottom of the top plate (93) is slidingly connected with a rotating rod (94), one end of the rear shell (91) is mounted with a motor (95), the output end of the motor (95) and the bottom of the rotating rod (94) are jointly connected with a gear set (96), the bottom of the top plate (93) and outside the rotating rod (94) are connected with a spring (97), the gear set (96) drives the servo motor (95) to rotate the rotating rod (94) and then drives the top plate (93) to move upward or downward.