CN214151347U - Supporting seat of laser projector - Google Patents

Abstract

The utility model provides a supporting seat of laser projector, the supporting seat of laser projector includes bottom plate, loading board and slide mechanism, the loading board bears the laser projector, the bottom plate with the loading board sets up relatively, slide mechanism is located the bottom plate with between the relative two sides of loading board, the loading board passes through slide mechanism with the bottom plate is connected, and can be relative the bottom plate slide along the first direction or along with the second direction that the first direction is opposite slides.

Description

Supporting seat of laser projector

Technical Field

The utility model relates to a laser projector technical field especially relates to a laser projector's supporting seat.

Background

The laser projector is not easy to age and influence the brightness and the display effect due to long service life, and in addition, the putting position of the laser projector is very flexible. Accordingly, laser projectors are becoming more popular with users. Users usually place the laser projector on a cabinet close to the projection wall, but when using the laser projector, the laser projector is often required to be moved to a certain distance from the projection wall to meet the requirement of the projection distance. At present, the laser projector is often manually moved by a user, so that the laser projector is inconvenient, and the laser projector is easy to break.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a support base for a laser projector that is convenient to operate.

A support base for a laser projector includes a base plate, a carrier plate, and a sliding mechanism, wherein the carrier plate carries the laser projector, the base plate and the carrier plate are disposed opposite to each other, the sliding mechanism is disposed between two opposite surfaces of the base plate and the carrier plate, and the carrier plate is connected to the base plate through the sliding mechanism and can slide along a first direction relative to the base plate or along a second direction opposite to the first direction.

Optionally, the support base of the laser projector further includes a control device, and the control device is configured to drive the sliding mechanism to drive the bearing plate to slide relative to the bottom plate.

Optionally, the control device includes a box and a driving device disposed in the box, the bottom plate and the bearing plate are located on the same side of the box, and the driving device is configured to drive the bearing plate to slide; the box body is fixed with one side surface of the bottom plate.

Optionally, the control device controls the bearing plate to slide away from the control device along the first direction or slide towards the control device along the second direction.

Optionally, the control device partially protrudes out of one side of the bearing plate away from the bottom plate.

Optionally, the bearing plate and the bottom plate are respectively plate-shaped objects with matched shapes, the bearing plate and the bottom plate are arranged in parallel, or the control device is a long-strip-shaped block-shaped object.

Optionally, the sliding mechanism includes a driving rod and a driven part, the driving rod is connected with the control device and moves under the drive of the control device, and the driven part is arranged on the bearing plate and matched with the driving rod, and the bearing plate is driven to slide under the drive of the driving rod.

Optionally, the driving rod is a screw rod, and the driven part is provided with a thread engaged with the screw rod.

Optionally, the sliding mechanism further includes a first slide rail disposed on the bearing plate and a second slide rail disposed on the bottom plate and corresponding to the first slide rail.

Optionally, the number of the first slide rails is two, the number of the second slide rails is two, and the two first slide rails are respectively located at two sides of the driving rod.

Optionally, the support base of the laser projector further includes a shielding member, the shielding member includes a shielding portion and two oppositely disposed support portions extending from two opposite sides of the shielding portion in a bending manner, the two support portions are fixed to the bottom plate so that the shielding portion straddles over the bearing plate, and the shielding member is disposed adjacent to the control device.

Optionally, the supporting base of the laser projector is further provided with a distance sensing device, and the distance sensing device is configured to sense a sliding distance of the supporting plate and send a stop command to the control device to control the supporting plate to stop sliding.

Optionally, the distance sensing device includes a first distance sensing device and a second distance sensing device, the first distance sensing device is used for sensing a sliding distance when the carrier plate slides along the second direction, and the second distance sensing device is used for sensing a sliding distance when the carrier plate slides along the first direction.

Optionally, the first distance sensing device includes a first sensor and a first stopper, one of the first sensor and the first stopper is fixed to the base, the other is fixed to the bearing plate and can slide along with the bearing plate, when the bearing plate returns to a predetermined distance along the second direction, the first sensor and the first stopper contact each other, and the first sensor generates the stop command.

Optionally, the first sensor is disposed on one side of the base plate facing the bearing plate, the first limiting block is disposed on one side of the bearing plate facing the base plate and contacts with the first sensor, and when the bearing plate slides along the first direction, the first limiting block slides along the bearing plate and is separated from the first sensor.

Optionally, the second distance sensing device includes a second sensor and a second limit block, one of the second sensor and the second limit block is fixed relative to the base, the other is fixed relative to the bearing plate and can slide along with the bearing plate, when the bearing plate slides in the first direction by the preset distance, the second sensor and the second limit block touch each other, and the second sensor generates the stop instruction; when the bearing plate slides along the second direction, the second sensor is separated from the second limiting block.

Optionally, the second limiting block is relatively fixed to the bearing plate through an adjusting rod, the second sensor is disposed on the bottom plate, the second limiting block and the second sensor are spaced in the sliding direction of the bearing plate, and the position of the second limiting block on the adjusting rod is adjustable to adjust the distance between the second limiting block and the second sensor to form the preset distance.

Optionally, two ends of the control device are provided with power connectors, and any one of the two power connectors can be electrically connected with an external power supply through a power line.

Optionally, the supporting base of the laser projector is further provided with a signal receiver, and the signal receiver is in wireless communication with an external controller and is used for receiving a control command sent by the external controller to control the control device to drive the bearing plate to slide along the first direction or to control the control device to drive the bearing plate to slide along the second direction.

In the above-mentioned laser projector's supporting seat, the loading board that bears the weight of the laser projector can slide to can make things convenient for the removal of laser projector.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from the structures shown in these drawings without inventive effort.

Fig. 1 is a perspective view of a first state of a support base of a laser projector according to a first embodiment of the present disclosure.

Fig. 2 is a perspective view of a second state of a support base of a laser projector according to a first embodiment of the present disclosure. .

Fig. 3 is a perspective view of a support base portion of a laser projector according to a first embodiment of the present disclosure.

Fig. 4 is a schematic view of a support stand for a laser projector according to a first embodiment of the present disclosure.

DESCRIPTION OF SYMBOLS IN THE DRAWINGS

Label name

100 supporting seat 43 box

200 laser projector 50 shielding member

10 bottom plate 51 shielding part

12 gap 52 support

20 bearing plate 60 first distance sensing device

30 slide mechanism 61 first sensor

31 first sliding mechanism 62 first stopper

310 drive rod 70 second distance sensing device

312 driven part 71 second sensor

32 second sliding mechanism 72 second stop

320 first slide rail 73 adjusting rod

322 second slide rail 74 adjustment

3220 wire groove 80 lead part

40 control device 90 signal receiver

41 power connector X first direction

42 external control Y second direction

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

For a clearer and more accurate understanding of the present invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings. Description of drawings the accompanying drawings illustrate examples of embodiments of the present invention, in which like reference numerals refer to like elements. It is to be understood that the drawings are not to scale as the actual practice of the invention, but are for illustrative purposes and are not drawn to scale.

Referring to fig. 1 to 4, fig. 1 is a perspective view of a support base of a laser projector according to a first embodiment of the present disclosure; fig. 2 is a perspective view of a second state of a support stand of a laser projector according to a first embodiment of the present invention; fig. 3 is a perspective view of a support base portion of a laser projector according to a first embodiment of the present invention; fig. 4 is a schematic view of a support stand for a laser projector according to a first embodiment of the present invention. The support base 100 of the laser projector includes a base plate 10, a carrier plate 20, and a slide mechanism 30. The carrier plate 20 is used to carry the laser projector 200. The bottom plate 10 and the carrier plate 20 are disposed opposite to each other and form a gap 12, and the sliding mechanism 30 is located in the gap 12 between the bottom plate 10 and the carrier plate 20, i.e., the sliding mechanism 30 is located between the two opposite sides of the bottom plate 10 and the carrier plate 20. The carrier plate 20 slides in a first direction X or in a second direction Y opposite to the first direction X with respect to the base plate 10 by the sliding mechanism 30. In the present embodiment, the carrier plate 20 carries the laser projector 200 and is movable, thereby facilitating adjustment of the position of the laser projector 200. The base plate 10 and the carrier plate 20 are oppositely disposed at an interval, and the support base 100 of the laser projector may be advantageous to miniaturize the volume of the support base 100 of the laser projector as the thickness of the base plate 10 and the carrier plate 20 is changed or the gap is changed. In this embodiment, the base plate 10 and the loading plate 20 are disposed in parallel and are adaptive rectangular plate-shaped objects, so that the overall volume of the support base 100 for the laser projector is small. In this embodiment, the support base 100 of the laser projector is of an automatic sliding type. Specifically, the support stand 100 of the laser projector further includes a control device 40. The control means 40 is used to drive the carrier plate 20 to slide back and forth. It is understood that in some possible embodiments, the support base 100 of the laser projector is manually slidable, and the control device 40 may be omitted. In some possible embodiments, the bottom plate 10 and the loading plate 20 may be plates with other shapes, such as a circle, a regular polygon, etc. The following description will be made by taking the support base 100 of the laser projector as an example of an automatic slide type.

The control device 40 comprises an elongated rectangular block housing 43 and a drive device (not shown) and other electronic components (not shown) arranged in the housing 43. The driving means may be a motor, a cylinder, etc. for providing power for driving the carrier plate 20 to slide. The base plate 10 and the loading plate 20 are located at the same side of the control means 40, and the housing 43 is connected to one side of the base plate 20 and drives the loading plate 20 to slide away from the control means 40 in the first direction X or to slide toward the control means 40 in the second direction Y. The control means 40 partially protrudes from the side of the loading plate 20 away from the base plate 10, i.e. the height of the box 43 away from the base plate 10 is higher than the height of the side of the loading plate 20 away from the base plate 10. In the present embodiment, the case 43 has an elongated rectangular block shape, so that the control device 40 as a whole has an elongated rectangular block shape. In other possible embodiments, the box 43 may also be a polygonal block, such as a hexagonal block, a cylindrical block, a semi-cylindrical block, etc., which is not limited herein. In some possible embodiments, the box 43 may also be arranged to be covered by the carrier plate 20 in the initial state. In other possible implementations, the control device 40 can omit the housing, and a driving device or other electronic devices can be disposed between the carrier plate 20 and the bottom plate 10. It is understood that the shape and structure of the control device 40 can be modified according to the actual design requirements, and the box 43 in the above embodiment is only an example, not a limitation.

The slide mechanism 30 includes a first slide mechanism 31 and a second slide mechanism 32. The second sliding mechanism 32 includes two first sliding rails 320 symmetrically disposed on the bottom plate 10 and two second sliding rails 322 disposed on the bottom plate 10 and corresponding to the two first sliding rails 320, and the two first sliding rails 320 and the two second sliding rails 322 are matched to slide so that the carrier plate 20 can make a linear motion relative to the bottom plate 10. The two second tracks 322 are further provided with wire passing grooves 3220.

The first sliding mechanism 31 includes a driving rod 310 and a driven portion 312, and one end of the driving rod 310 extends into the control device 40 and is driven to rotate by the control device 40. The driven portion 312 is disposed on a surface of the loading plate 20 facing the bottom plate 10, so that the driving rod 310 drives the loading plate 20 to slide through the driven portion 312. The driven portion 312 is disposed between the two first sliding rails 320. In this embodiment, if the driving device is a driving motor, accordingly, the driving rod 310 is provided as a screw, and the driven part 312 is provided with a thread engaged with the screw. It should be understood that, in other possible implementations, if the driving device is an air cylinder, the driving rod 310 may be a telescopic rod with one end fixed to the air cylinder, and the driven part 312 is a fixed part fixed to the end of the telescopic rod.

Further, the support stand 100 of the laser projector further includes a shielding member 50. The shielding member 50 includes a shielding portion 51 and two support portions 52 extending from both sides of the shielding portion 51. The two support portions 52 are fixed to the base plate 10 such that the shielding portion 51 straddles the carrier plate 20 and the shielding member 50 is disposed adjacent to the control device 40. Since the laser projector 200 is connected with a cable, such as a power cord, it is necessary to reserve a certain length of the cable to slide the carrier plate 20 to a side away from the control device 40, and the cable tends to be accumulated near the control device 40 when the carrier plate 20 returns to the control device 40. At this time, the cable may be shielded by the shielding portion 51, which facilitates the cable storage and makes the laser projector 200 neater.

Further, the support base 100 of the laser projector is further provided with a distance sensing device for sensing a sliding distance of the carrier plate 20 and sending a stop command to the control device 40 to control the carrier plate 20 to stop sliding. The ranging sensing device includes a first distance sensing device 60 and a second distance sensing device 70. The first distance sensing device 60 is used for sensing a sliding distance when the carrier plate 20 slides along the second direction, and the second distance sensing device 70 is used for sensing a sliding distance when the carrier plate 20 slides along the first direction. That is, the first distance sensing means 60 is used for sensing a sliding distance when the carrier plate 20 slides towards the control means 40, and the second distance sensing means 70 is used for sensing a sliding distance when the carrier plate 20 slides away from the control means 40.

The first sensing structure 60 includes a first sensor 61 and a first stopper 62. The second distance sensing means 70 includes a second sensor 71 and a second stopper 72. In the present embodiment, the first sensor 61 and the second sensor 71 are disposed on a side of the bottom plate 10 facing the carrier plate 20. The first sensor 61 and the second sensor 71 are respectively disposed at two opposite sides of the bottom plate 10 along the width direction of the bottom plate 10 at intervals, and both the first sensor 61 and the second sensor 71 are close to one side of the bottom plate 10 away from the control device 40. The first stopper 62 and the second stopper 72 are respectively disposed corresponding to the first sensor 61 and the second sensor 71, and can slide along with the carrier plate 20 and respectively touch the first sensor 61 and the second sensor 71 to trigger the first sensor 61 and the second sensor 71 to generate a stop command so as to control the control device 40 to control the carrier plate 20 to stop sliding. In other possible embodiments, the positions of the first sensor 61 and the first stopper 62 may be reversed, that is, the first sensor 61 is disposed on the bearing plate 20, and the first stopper 62 is disposed on the bottom plate 10. Similarly, the positions of the second sensor 71 and the second stopper 72 can be reversed, that is, the second sensor 71 is disposed on the carrier plate 20, and the second stopper 72 is disposed on the bottom plate 10. Wherein:

when the loading plate 10 and the bottom plate 20 are in the initial state, the first stopper 62 and the second stopper 72 are spaced in the sliding direction of the loading plate 20, and the first stopper 62 touches the first sensor 61.

When the bearing plate 20 slides along the first direction X, the first stopper 62 slides along with the bearing plate 20 and is separated from the first sensor 61; when the bearing plate 20 slides to a preset distance along the first direction X, the second sensor 71 and the second stopper 72 touch each other, and the second sensor 71 generates a stop instruction.

When the carrier plate 20 returns along the second direction Y, the second sensor 71 is separated from the second stopper 72, and when the carrier plate 20 returns along the second direction Y by a predetermined distance, the first sensor 61 is in contact with the first stopper 62, and the first sensor 61 generates a stop command.

It is understood that the preset distance is a distance between the second sensor 71 and the second stopper 72. In this embodiment, the preset distance is adjustable. Specifically, the second distance sensing device 70 further comprises an adjusting lever 73, and the adjusting lever 73 is fixed to a side of the carrying plate 20 facing the bottom plate 10 and close to the second sensor 71. The second stopper 72 is fixed to the carrier plate 20 by an adjustment lever 73. Wherein, the second limit block 72 is adjustably fixed on the adjusting rod 73 by an adjusting piece 74. The adjusting member 74 is a bolt, the limiting block 72 is movably sleeved on the adjusting rod 73, and the adjusting member 74 penetrates through the second limiting block 72 and abuts against the adjusting rod 73 to lock the second limiting block 72 on the adjusting rod 73. When the position of the second limit block 72 needs to be adjusted, the adjusting piece 74 can be loosened, so that the second limit block 72 is unlocked and can slide on the adjusting rod 73 under the action of external force to adjust the relative position of the adjusting rod 73, and the preset distance is adjusted.

In some possible embodiments, the number of first sensors 61 and second sensors 71 may vary. The first sensor 61 and the second sensor 71 may be two or more to more ensure the stability of the performance of the support stand 100 of the laser projector. It is understood that when one of the first sensor 61 or the second sensor 71 is damaged, the other of the first sensor 61 and the second sensor 71 can still keep the support base 100 of the laser projector working normally.

Further, the support stand 100 of the laser projector further includes a cable connected between the control device 40 and the first and second sensors 61 and 71. The support base 100 of the laser projector is further provided with lead portions 80 having threading holes, and the lead portions 80 are located between the first sensor 61 and one second slide rail 322 and between the second sensor 71 and the other second slide rail 322. The cable extends from the control device 40 and sequentially passes through the wire passing groove 3220 of the second slide rail 322 and the wire passing hole of the lead part 80 to be connected with the first sensor 61 and the second sensor 71. The cable is hidden connected in the lead part 80 and the second slide rail 322.

Further, two ends of the control device 40 are provided with power connectors 41, and any one of the two power connectors 41 is plugged with a power line and can be electrically connected with an external power source (not shown), so as to charge the control device 40 or provide electric energy for driving the carrier plate 20 to slide. More specifically, the power connectors 41 are disposed at both ends of the control device 40 in the longitudinal direction, and the user can connect to the external power source from any one of the power connectors 41, thereby reducing the degree of limitation to the position of the external power source, and further providing convenience to the user in using the support stand 100 of the laser projector.

Further, the support base 100 of the laser projector is further provided with a signal receiver 90, and the signal receiver 90 is disposed in the control device 40 and is in wireless communication with the external controller 42 for receiving the control command sent by the external controller 42. The control instructions include an open instruction and a close instruction. The opening command is used for controlling the control device 40 to drive the carrier plate 20 to slide along the first direction X; the closing command is used to control the control device 40 to drive the carrier plate 20 to slide along the second direction Y. Further, the external controller 42 is plugged into the laser projector 200 for electrical connection with the laser projector 200, and the external controller 42 generates the turn-on command when the laser projector 200 is powered on; the external controller 42 generates the shutdown command when the laser projector 200 is powered down.

In some possible embodiments, the external controller 42 may also be a hand-held remote controller for wirelessly manipulating the cradle 100 of the laser projector.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, to the extent that such modifications and variations fall within the scope of the invention and the equivalent techniques thereof, it is intended that the present invention also encompass such modifications and variations.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the following claims.

Claims (19)

1. A support base for a laser projector includes a base plate, a carrier plate, and a sliding mechanism, wherein the carrier plate carries the laser projector, the base plate and the carrier plate are disposed opposite to each other, the sliding mechanism is disposed between two opposite surfaces of the base plate and the carrier plate, and the carrier plate is connected to the base plate through the sliding mechanism and can slide in a first direction relative to the base plate or in a second direction opposite to the first direction.

2. The laser projector support of claim 1, wherein the laser projector support further comprises a control device for driving the sliding mechanism to slide the carrier plate relative to the base plate.

3. The support stand for a laser projector according to claim 2, wherein the control means includes a housing and a driving means disposed in the housing, the bottom plate and the carrier plate being located on the same side of the housing, the driving means being adapted to drive the carrier plate to slide; the box body is fixed with one side surface of the bottom plate.

4. The support stand for a laser projector of claim 3, wherein the controller controls the carrier plate to slide away from the controller in the first direction or to slide toward the controller in the second direction.

5. The support stand for a laser projector according to claim 2, wherein the control means is partially protruded from a side of the carrier plate away from the bottom plate.

6. The support stand for a laser projector according to claim 2, wherein the carrier plate and the bottom plate are respectively formed as plates having a shape adapted to each other, the carrier plate and the bottom plate are arranged in parallel, or the control device is formed as an elongated block.

7. The support stand for a laser projector according to claim 2, wherein the sliding mechanism includes a driving rod and a driven part, the driving rod is connected to the control device and driven by the control device to move, and the driven part is disposed on the carrier plate and engaged with the driving rod to slide the carrier plate.

8. The support stand for a laser projector according to claim 7, wherein the driving rod is a screw, and the driven portion is provided with a thread engaged with the screw.

9. The support base for a laser projector according to claim 7, wherein the sliding mechanism further comprises a first slide rail disposed on the carrier plate and a second slide rail disposed on the bottom plate and corresponding to the first slide rail for sliding.

10. The support stand for a laser projector according to claim 9, wherein the number of the first slide rails is two, and the number of the second slide rails is two, and the two first slide rails are respectively located at both sides of the driving rod.

11. The support stand for a laser projector according to claim 3, wherein the support stand for a laser projector further comprises a shielding member, the shielding member comprises a shielding portion and two opposite support portions extending from opposite sides of the shielding portion, the two support portions are fixed to the bottom plate such that the shielding portion straddles over the carrier plate, and the shielding member is disposed adjacent to the control device.

12. The support stand for a laser projector according to claim 2, wherein the support stand for a laser projector further comprises a distance sensor for sensing a sliding distance of the carrier plate and sending a stop command to the controller to control the carrier plate to stop sliding.

13. The support stand of a laser projector according to claim 12, wherein the distance sensing device includes a first distance sensing device for sensing a sliding distance of the carrier plate when sliding in the second direction and a second distance sensing device for sensing a sliding distance of the carrier plate when sliding in the first direction.

14. The support stand for a laser projector according to claim 13, wherein the first distance sensing device includes a first sensor and a first stopper, one of the first sensor and the first stopper is fixed with respect to the bottom plate, the other of the first sensor and the first stopper is fixed with respect to the carrier plate and is slidable along with the carrier plate, and the first sensor and the first stopper contact each other when the carrier plate returns to a predetermined distance in the second direction, and the first sensor generates the stop command.

15. The support stand for a laser projector according to claim 14, wherein the first sensor is disposed at a side of the base plate facing the loading plate, the first stopper is disposed at a side of the loading plate facing the base plate and the first stopper is in contact with the first sensor, and when the loading plate slides in the first direction, the first stopper slides with the loading plate and is separated from the first sensor.

16. The support stand for a laser projector according to any one of claims 14 to 15, wherein the second distance sensing device includes a second sensor and a second stopper, one of the second sensor and the second stopper is fixed relative to the base plate, the other of the second sensor and the second stopper is fixed relative to the carrier plate and is slidable along with the carrier plate, and the second sensor and the second stopper come into contact when the carrier plate slides in the first direction by the predetermined distance, the second sensor generating the stop command; when the bearing plate slides along the second direction, the second sensor is separated from the second limiting block.

17. The support base for a laser projector according to claim 16, wherein the second stopper is fixed to the supporting plate by an adjusting lever, the second sensor is disposed on the bottom plate, the second stopper and the second sensor are spaced apart from each other in a sliding direction of the supporting plate, and a position of the second stopper on the adjusting lever is adjustable to adjust a distance between the second stopper and the second sensor to the predetermined distance.

18. The support stand for a laser projector according to claim 2, wherein the control device is provided with power connectors at two ends, and either of the two power connectors is electrically connected to an external power source through a power line.

19. The laser projector support stand of claim 2, wherein the laser projector support stand further comprises a signal receiver, the signal receiver is in wireless communication with an external controller, and is configured to receive a control command from the external controller to control the control device to slide the carrier plate in the first direction or to control the control device to slide the carrier plate in the second direction.

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