CN215212841U - Length-adjustable base and locking and unlocking robot - Google Patents

Abstract

The utility model discloses a length-adjustable base and a locking and unlocking robot, which comprises a fixed base and a sliding base sleeved with the fixed base, wherein a sliding fastener is arranged in the sliding base, and the sliding fastener and the sliding base slide synchronously; the fixed base is internally provided with a wave sawtooth groove, the sliding clamping piece is detachably connected with the wave sawtooth groove, the stirring piece is arranged in the sliding base and is connected with the sliding clamping piece, and the stirring piece is used for separating the connection between the sliding clamping piece and the wave sawtooth groove. According to the utility model discloses an adjustable length base and switching lock robot, unable adjustment base fixed connection is on the surface of lock, and sliding base adjusts its and the unable adjustment base between distance through being connected between slip fastener and the wave sawtooth groove, makes switching lock robot can adjust suitable mounted position according to the different shapes of lock, comes to separate the connection between slip fastener and the wave sawtooth groove through stirring the piece and comes the adjusting distance, enlarges switching lock robot's installation scope.

Description

Length-adjustable base and locking and unlocking robot

Technical Field

The utility model relates to a lock equipment technical field, in particular to adjustable length base and switching lock robot.

Background

Due to the excellent anti-theft performance and safety of the anti-theft lock, the anti-theft lock is widely applied to various occasions under the long-term popularization, and the door provided with the anti-theft lock can be seen everywhere no matter in places such as homes, shops or markets. The anti-theft locks sold in the market are various, for example: conventional pickproof lock, trick lock type pickproof lock, fingerprint lock type pickproof lock etc. conventional pickproof lock need manually unblank and lock the door lock, and a novel pickproof lock appears now, can directly realize the function of unblanking automatically and locking automatically. For an old conventional anti-theft lock, a user wants to enable the lock to have automatic unlocking and automatic locking functions, and only the whole anti-theft lock can be replaced, but because the shapes and the sizes of the lock bodies of the anti-theft locks are different, the door frame needs to be corrected when a new anti-theft lock is matched, the workload is large, and the cost is high.

In order to cope with the situation, an unlocking and locking device appears in the market, wherein the unlocking and locking device is a device installed on an anti-theft lock, can enable an old-fashioned anti-theft lock to achieve the functions of automatic unlocking and automatic locking, is convenient to install and low in cost, and realizes unlocking and locking by clamping a locking handle of the old-fashioned anti-theft lock and driving through a motor. However, since the door locks are of various types, the lengths of the protruding door locks of the locking handles are different, and the locking and unlocking devices with fixed lengths cannot cover the locking handles with different protruding lengths, so that the installation range of the locking and unlocking devices is exceeded, and the application range of the locking and unlocking devices is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving the length diverse of "locking the outstanding lock of handle that locks that exists among the prior art at least, the switching lock equipment of regular length can't cover the handle that locks of different outstanding length, surpasss the installation scope of equipment, reduces the technical problem of switching lock equipment application scope". Therefore, the utility model provides an adjustable length base and switching lock robot can adjust the length of installation base according to the handle of locking of different outstanding length to make the robot of opening and shutting be applicable to the handle of locking of different length structure, lifting means's installation scope.

According to some embodiments of the present invention, the adjustable length base comprises a fixed base and a sliding base sleeved with the fixed base, wherein a sliding fastener is arranged in the sliding base, and the sliding fastener slides synchronously with the sliding base; the fixed base is internally provided with a wave sawtooth groove, the sliding clamping piece is detachably connected with the wave sawtooth groove, a stirring piece is arranged in the sliding base and is connected with the sliding clamping piece, and the stirring piece is used for separating the connection between the sliding clamping piece and the wave sawtooth groove.

According to the utility model discloses a some embodiments, unable adjustment base one side is provided with a plurality of stand pipes, sliding base be provided with quantity with a plurality of uide bushings that the stand pipe corresponds, sliding base passes through the uide bushing with unable adjustment base the stand pipe cup joints.

According to the utility model discloses a some embodiments, unable adjustment base's bottom symmetry is provided with the guide way, a guide block is extended respectively to sliding base's bottom both sides, the guide block with guide way sliding connection.

According to some embodiments of the utility model, the slip fastener includes the roof, and the roof both sides are provided with plectrum, two respectively the plectrum symmetry sets up, the plectrum leans out the setting, the bottom and the wave sawtooth groove contact of plectrum.

According to the utility model discloses a some embodiments, be provided with the spacing groove in the sliding bottom seat, the slip fastener one side embedding of roof the spacing inslot.

According to some embodiments of the present invention, the toggle member comprises a connecting post and a push rod, the connecting post is connected with the sliding base, and the connecting post is disposed on the other side of the top plate; the push rod penetrates through the sliding clamping piece, two sides of the push rod are respectively contacted with the two poking pieces, one end of the push rod is rotatably connected with the connecting column, a poking groove is formed in the side wall of the sliding base, and the other end of the push rod penetrates through the poking groove and protrudes out of the side wall of the sliding base.

According to some embodiments of the utility model, the push rod is outstanding sliding base's end is the setting of T type, stir the width in groove and be greater than the width of push rod, the width and two of push rod distance between the plectrum equals.

According to some embodiments of the utility model, a closing cap can be dismantled and connection to sliding bottom's one end, the closing cap with sliding bottom passes through screwed connection, the closing cap is close to a lopsidedness setting of plectrum.

According to some embodiments of the present invention, the robot lock-open and lock-close mechanism comprises the adjustable length base, a shell main body, a transmission mechanism, a clutch mechanism, a clamping mechanism and a driving motor, wherein the shell main body is connected with the sliding base and moves synchronously with the sliding base, and the clamping mechanism is used for clamping a lock handle; the transmission mechanism, the clutch mechanism and the driving motor are all arranged in the shell main body, the output end of the transmission mechanism is connected with the clamping mechanism, and the clutch mechanism is arranged between the input end of the transmission mechanism and the output end of the driving motor; when the driving motor operates, the clutch mechanism enables the input end of the transmission mechanism to be connected with the output end of the driving motor, and when the driving motor stops, the clutch mechanism enables the input end of the transmission mechanism to be disconnected with the output end of the driving motor.

According to some embodiments of the invention, the clutch mechanism comprises a clutch master, a swing arm, a linkage and a traction member; the clutch main part is arranged at the input end of the transmission mechanism, a circular mounting groove is dug at one end of the clutch main part close to the driving motor, and at least one linkage groove is formed in the side wall of the circular mounting groove; the output end of the driving motor extends into the circular mounting groove; the linkage piece is arranged in the circular mounting groove, the swing arm is arranged at the output end of the driving motor and drives the swing arm to rotate, and the swing arm pushes the linkage piece to be locally accommodated in the linkage groove, so that the clutch main piece is driven to rotate; when the driving motor stops, the traction piece pulls the linkage piece to be far away from the linkage groove.

According to the utility model discloses an adjustable length base and switching lock robot of some embodiments has following beneficial effect at least: the fixed base is fixedly connected to the surface of the door lock, the sliding base adjusts the distance between the sliding base and the fixed base through the connection between the sliding clamping piece and the wavy sawtooth grooves, so that the unlocking and locking robot can adjust the proper installation position according to different shapes of the door lock, the shifting piece separates the connection between the sliding clamping piece and the wavy sawtooth grooves, the distance between the fixed base and the sliding base is adjusted, and the installation range of the unlocking and locking robot is expanded.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a first schematic perspective view of an adjustable length base according to an embodiment of the present invention;

fig. 2 is a second schematic perspective view of the adjustable length base according to the embodiment of the present invention;

FIG. 3 is a combination view of an adjustable length base according to an embodiment of the present invention;

fig. 4 is a partial schematic view of an adjustable length base according to an embodiment of the present invention;

fig. 5 is a schematic view of a fixing base of the adjustable length base according to the embodiment of the present invention;

FIG. 6 is a cross-sectional view of a fixing base of an adjustable length base according to an embodiment of the present invention;

fig. 7 is a schematic view of a slide fastener of an adjustable length base according to an embodiment of the present invention;

fig. 8 is a partial schematic view of the locking and unlocking robot according to the embodiment of the present invention;

fig. 9 is a schematic view of a clutch mechanism of the locking and unlocking robot according to the embodiment of the present invention;

fig. 10 is a schematic view of a swing arm of the robot locking and unlocking robot according to an embodiment of the present invention.

Reference numerals:

the sliding base 200, the guide sleeve 220, the guide block 230, the toggle groove 240, the sealing cover 250, the sliding clamping piece 300, the top plate 310, the toggle piece 320, the toggle piece 400, the connecting column 410, the push rod 420, the guide sleeve 110, the guide groove 120, the wavy sawtooth groove 130, the sliding base 100, the guide sleeve 210, the guide block,

The shell body 500, the clamping mechanism 510, the transmission mechanism 520, the driving motor 530, the clutch mechanism 540, the clutch main piece 541, the circular mounting groove 542, the linkage groove 543, the swing arm 544, the linkage 545 and the traction piece 546.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, top, bottom, etc., is the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

An adjustable length base and an opening/closing lock robot according to an embodiment of the present invention will be described with reference to fig. 1 to 10.

As shown in fig. 1-10, the adjustable length base comprises a fixed base 100 and a sliding base 200 sleeved with the fixed base 100, wherein a sliding fastener 300 is arranged in the sliding base 200, and the sliding fastener 300 slides synchronously with the sliding base 200. Be provided with wave sawtooth groove 130 in unable adjustment base 100's bottom, wave sawtooth groove 130 sets up on unable adjustment base 100 bottom's surface, the direction setting that extends along unable adjustment base 100, and slide card 300 can dismantle with wave sawtooth groove 130 and be connected, slide card 300 moves on wave sawtooth groove 130, thereby drive slide base 200 and remove, realize the distance adjustment between slide base 200 and unable adjustment base 100, a stirring piece 400 has still been set up in slide base 200, stirring piece 400 is connected with slide card 300, can adjust the relation of being connected between slide card 300 and wave sawtooth groove 130, be used for separating being connected between slide card 300 and wave sawtooth groove 130. When a user needs to adjust the distance between the sliding base 200 and the fixed base 100, the toggle member 400 is pushed to enable the sliding card member 300 to move on the wave-shaped sawtooth groove 130, so that the distance between the sliding base 200 and the fixed base 100 is changed, and the mountable range of the unlocking and locking robot is expanded.

In some embodiments of the present invention, as shown in fig. 2, in order to integrate the exterior of the sliding base 200 and facilitate the installation of the sliding fastener 300, one end of the sliding base 200 is detachably connected to a cover 250, the cover 250 is connected to the sliding base 200 through screws, and the cover 250 is disposed at a side of the shifting block 320. The sliding clip 300 and the toggle member 400 are installed by detaching the cover 250 and are connected by screws, so that the appearance of the sliding base 200 is more beautiful and the exposure of internal structural components is reduced.

In some embodiments of the present invention, as shown in fig. 1, fig. 3 and fig. 4, specifically, in order to make the sliding base 200 slide smoothly on the fixing base 100, one side of the fixing base 100 is provided with a plurality of guide tubes 110, and the sliding base 200 is provided with a plurality of guide sleeves 210 whose number corresponds to the guide tubes 110, in this embodiment, the number of the guide tubes 110 and the number of the guide sleeves 210 are two, the sliding base 200 is sleeved with the guide tubes 110 of the fixing base 100 through the guide sleeves 210, when the sliding base 200 adjusts the distance, the guide sleeves 210 and the guide tubes 110 play a role in guiding, so that the sliding base 200 can move back and forth along the extending direction of the guide tubes 110, and the extending direction of the guide tubes 110 on the fixing base 100 is consistent with the extending direction of the wave sawtooth grooves 130.

The bottom of unable adjustment base 100 still the symmetry is provided with guide way 120, and sliding base 200 corresponds the bottom both sides of connecting unable adjustment base 100 and extends a guide block 220 respectively, and guide block 220 and guide way 120 sliding connection through the sliding connection between guide block 220 and the guide way 120 and the guide effect between stand pipe 110 and uide bushing 210, make sliding base 200 slide more smoothly when adjusting distance.

In some embodiments of the present invention, as shown in fig. 3, 5 and 6, the sliding fastener 300 is used to drive the sliding base 200 to slide and connect with the wave sawtooth groove 130 on the fixing base 100, and includes a top plate 310, two shifting pieces 320 are respectively extended and disposed on two sides of the top plate 310, the two shifting pieces 320 are symmetrically disposed on two sides of the top plate 310, the two shifting pieces 320 are inclined outward and disposed to be in a splayed shape, and the bottom of the two shifting pieces 320 contacts with the wave sawtooth groove 130. When the sliding base 200 and the fixed base 100 are fixed to each other, both the two pulling pieces 320 are in contact connection with the wavy saw-tooth groove 130, at this time, the sliding clip 300 cannot move on the wavy saw-tooth groove 130, and the sliding base 200 and the sliding clip 300 move synchronously, so that when the sliding clip 300 cannot move, the position of the sliding base 200 is relatively fixed. In order to fix the position between the slide cartridge 300 and the slide base 200, a stopper groove 230 is provided inside the slide base 200, and one side of the top plate 310 of the slide cartridge 300 can be coupled to the stopper groove 230, thereby moving the slide base 200 and the slide cartridge 300 in synchronization.

When the distance between the sliding base 200 and the fixed base 100 needs to be increased, the shifting piece 320 on the side away from the fixed base 100 needs to be lifted, and the sliding card 300 can move in the direction away from the fixed base 100; when the distance between the sliding base 200 and the fixed base 100 needs to be reduced, the shifting piece 320 near one side of the fixed base 100 needs to be lifted, and the sliding card 300 can move in the direction near the fixed base 100, in order to realize the function of lifting the shifting pieces 320 at both sides of the sliding card 300, the shifting piece 400 is adopted in the present embodiment, which will be described in detail below.

As shown in fig. 7, the toggle member 400 includes a connection column 410 and a push rod 420, the connection column 410 is fixedly connected in the sliding base 200, and is specifically disposed on the other side of the top plate 310; and the push rod 420 passes through the sliding fastener 300, specifically, the push rod 420 is disposed between the two plectrums 320, two sides of the push rod 420 are respectively contacted with the two plectrums 320, one end of the push rod 420 is rotatably connected with the connecting column 410, the other end passes through the toggle groove 240, and the toggle groove 240 is disposed on the side wall of the sliding base 200. When a user dials the corresponding shifting piece 320, the shifting piece 320 on the corresponding side can be lifted only by pushing the push rod 420 to the corresponding direction, the sliding clamping piece 300 is usually made of plastic or metal with a certain deformation amount, when the push rod 420 rotates by taking the joint of the connecting column 410 as a hinge point, the rod body of the push rod 420 extrudes the corresponding shifting piece 320, the shifting piece 320 deforms, the shifting piece 320 deformed at the moment is lifted and separated from the connection of the wavy sawtooth grooves, and therefore the sliding base 200 is moved. In this embodiment, the head of the connecting column 410 is semicircular, the middle of the semicircular head is provided with a slot, when the push rod 420 is sleeved in the head of the connecting column 410, the head is drawn close to the slot to reduce the diameter of the head, so that the push rod 420 can enter the slot conveniently, and after the push rod 420 is connected with the connecting column 410, the shape of the head is recovered to prevent the push rod 420 from falling off from the connecting column 410.

As shown in fig. 8-10, in order to facilitate the user to push the push rod 420, the end of the push rod 420 protruding out of the sliding base 200 is arranged in a T shape, and the width of the toggle groove 240 is greater than that of the push rod 420, so that the push rod 420 can be pushed back and forth within a certain range, thereby driving the toggle piece 320 to deform; the width of the push rod 420 is equal to the distance between the two shifting pieces 320, and the push rod 420 is attached to the two shifting pieces 320, so that the virtual position stroke when the push rod 420 is pushed can be reduced, and the shifting pieces 320 are separated from the wavy sawtooth grooves more quickly.

In some embodiments of the present invention, as shown in fig. 8 to 10, the robot with the adjustable length base further includes a shell main body 500, a transmission mechanism 520, a clutch mechanism 540, a clamping mechanism 510 and a driving motor 530, the shell main body 500 is connected to the sliding base 200 and moves synchronously with the sliding base 200, and the clamping mechanism 510 is used for clamping a locking handle of the door lock. The transmission mechanism 520, the clutch mechanism 540 and the driving motor 530 are all arranged in the shell main body 500, the output end of the transmission mechanism 520 is connected with the clamping mechanism 510, and the clutch mechanism 540 is arranged between the input end of the transmission mechanism 520 and the output end of the driving motor 530; when the driving motor 530 is operated, the clutch mechanism 540 connects the input terminal of the transmission mechanism 520 to the output terminal of the driving motor 530, and when the driving motor 530 is stopped, the clutch mechanism 540 disconnects the input terminal of the transmission mechanism 520 from the output terminal of the driving motor 530.

As shown in fig. 9 and 10, the clutch mechanism 540 includes a clutch main body 541, a swing arm 544, a link 545, and a pulling body 546, the link 545 is made of a material that can be attracted by a magnet, and the pulling body 546 is made of a material with magnetism. The clutch main component 541 is installed at the input end of the transmission mechanism 520, a circular installation groove 542 is dug at one end of the clutch main component 541 close to the driving motor 530, and at least one linkage groove 543 is arranged on the side wall of the circular installation groove 542; the output end of the driving motor 530 extends into the circular mounting groove 542; the linkage member 545 is installed in the circular installation groove 542, the swing arm 544 is installed at the output end of the driving motor 530 and drives the swing arm 544 to rotate, so that the swing arm 544 pushes the linkage member 545 to be partially accommodated in the linkage groove 543, the clutch main member 541 is driven to rotate, and when the driving motor 530 stops, the traction member 546 pulls the linkage member 545 to be far away from the linkage groove 543.

By adopting the clutch mechanism 540, the locking and unlocking robot can switch an automatic mode and a manual mode at any time when in use, under the automatic mode, the driving motor 530 drives the swing arm 544 to rotate, the swing arm 544 pushes the linkage member 545 to the linkage groove 543 when rotating, and at the moment, the swing arm 544, the linkage member 545 and the clutch main member 541 synchronously rotate; when the driving motor 530 stops working, the linkage 545 resets under the magnetic attraction effect of the traction piece 546, so that the connection between the swing arm 544 and the clutch main piece 541 is separated; and at this time, the user cannot be influenced by the driving motor 530 for locking or unlocking manually.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. The base with the adjustable length is characterized by comprising a fixed base (100) and a sliding base (200) sleeved with the fixed base (100), wherein a sliding fastener (300) is arranged in the sliding base (200), and the sliding fastener (300) and the sliding base (200) synchronously slide;

the novel wave-shaped clamping piece is characterized in that a wave-shaped sawtooth groove (130) is formed in the fixed base (100), the sliding clamping piece (300) is detachably connected with the wave-shaped sawtooth groove (130), a stirring piece (400) is arranged in the sliding base (200) and connected with the sliding clamping piece (300), and the stirring piece (400) is used for separating the sliding clamping piece (300) from the wave-shaped sawtooth groove (130).

2. The adjustable length base of claim 1, wherein a plurality of guide tubes (110) are arranged on one side of the fixed base (100), the sliding base (200) is provided with a plurality of guide sleeves (210) corresponding to the guide tubes (110), and the sliding base (200) is sleeved with the guide tubes (110) of the fixed base (100) through the guide sleeves (210).

3. The adjustable length base of claim 2, wherein the bottom of the fixed base (100) is symmetrically provided with guide grooves (120), two sides of the bottom of the sliding base (200) are respectively extended with a guide block (220), and the guide blocks (220) are slidably connected with the guide grooves (120).

4. The adjustable length base of claim 3, wherein the sliding fastener (300) comprises a top plate (310), two sides of the top plate (310) are respectively provided with a pulling piece (320), the two pulling pieces (320) are symmetrically arranged, the pulling pieces (320) are obliquely arranged outwards, and the bottoms of the pulling pieces (320) are in contact with the wavy sawtooth groove (130).

5. The adjustable length base of claim 4, wherein a limit groove (230) is arranged in the sliding base (200), and one side of the top plate (310) of the sliding block (300) is embedded in the limit groove (230).

6. The adjustable length base of claim 5, wherein the toggle member (400) comprises a connecting column (410) and a push rod (420), the connecting column (410) is connected with the sliding base (200), the connecting column (410) is arranged at the other side of the top plate (310);

the push rod (420) penetrates through the sliding clamping piece (300), two sides of the push rod (420) are respectively contacted with the two poking pieces (320), one end of the push rod (420) is rotatably connected with the connecting column (410), a poking groove (240) is formed in the side wall of the sliding base (200), and the other end of the push rod (420) penetrates through the poking groove (240) and protrudes out of the side wall of the sliding base (200).

7. The adjustable length base of claim 6, wherein the end of the push rod (420) protruding the sliding base (200) is arranged in a T shape, the width of the toggle groove (240) is larger than that of the push rod (420), and the width of the push rod (420) is equal to the distance between the two toggle pieces (320).

8. The adjustable length base of claim 7, wherein a cover (250) is detachably connected to one end of the sliding base (200), the cover (250) is connected with the sliding base (200) through screws, and one side of the cover (250) close to the poking piece (320) is obliquely arranged.

9. An unlocking and locking robot, characterized by comprising the adjustable length base of any one of claims 1-8, and further comprising a shell main body (500), a transmission mechanism (520), a clutch mechanism (540), a clamping mechanism (510) and a driving motor (530), wherein the shell main body (500) is connected with the sliding base (200) and moves synchronously with the sliding base (200), and the clamping mechanism (510) is used for clamping a locking handle;

the transmission mechanism (520), the clutch mechanism (540) and the driving motor (530) are all installed in the shell main body (500), the output end of the transmission mechanism (520) is connected with the clamping mechanism (510), and the clutch mechanism (540) is installed between the input end of the transmission mechanism (520) and the output end of the driving motor (530); when the driving motor (530) runs, the clutch mechanism (540) enables the input end of the transmission mechanism (520) to be connected with the output end of the driving motor (530), and when the driving motor (530) stops, the clutch mechanism (540) enables the input end of the transmission mechanism (520) to be disconnected with the output end of the driving motor (530).

10. The open-close lock robot according to claim 9, wherein the clutch mechanism (540) comprises a clutch main member (541), a swing arm (544), a linkage member (545) and a pulling member (546); the clutch main part (541) is installed at the input end of the transmission mechanism (520), one end, close to the driving motor (530), of the clutch main part (541) is provided with a circular installation groove (542) in a digging mode, and the side wall of the circular installation groove (542) is at least provided with a linkage groove (543); the output end of the driving motor (530) extends into the circular mounting groove (542); the linkage piece (545) is arranged in the circular mounting groove (542), the swing arm (544) is arranged at the output end of the driving motor (530) and drives the swing arm (544) to rotate, and the swing arm (544) pushes the linkage piece (545) to be partially accommodated in the linkage groove (543), so that the clutch main piece (541) is driven to rotate; when the driving motor (530) is stopped, the pulling member (546) pulls the link member (545) away from the link groove (543).

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