Transmission mechanism for flat parking lock of intelligent parking manager

Abstract

The invention discloses a transmission mechanism of a flat car position lock of an intelligent parking manager, and relates to the field of flat car position locks, the transmission mechanism comprises a mainframe box, shaft holes are formed in two sides of the mainframe box, rotating shafts penetrate through the shaft holes, and a motor is mounted in the mainframe box; the two ends of the screw rod are supported on the mainframe box, and one end of the screw rod is connected and driven by a motor; the transmission assembly is arranged between the screw and the rotating shaft and transmits power of the screw to the rotating shaft, the two ends of the rotating shaft are supported on the mainframe box, and one end of the rotating shaft penetrates out of the mainframe box and is used for driving the flat car position lock; the sealing assemblies are mounted on two sides of the mainframe box and correspond to the shaft holes, and seal two ends of the rotating shaft relative to the mainframe box; and the cover plate assembly is fixed at the top of the mainframe box. By means of the symmetrical and laminated arrangement design of the nut, the connecting rod and the rocker arm in the transmission assembly, the mechanism runs stably and smoothly, durability and stability are improved, overall rotation is simple and efficient, a cushion pad is arranged between the motor and the mainframe box, the motor is convenient to replace, and the mechanism is suitable for being used in the severe environment.

Description

Technical Field

[0001] The invention relates to the field of flat parking locks, and in particular to a transmission mechanism of a flat parking lock of an intelligent parking manager. Background Art

[0002] A parking lock is a device used to prevent external vehicles from occupying a designated parking space, and at the same time, it can also prevent vehicles in the parking space from being accidentally driven out. For example, a Chinese patent document (CN203257154U) discloses an intelligent parking lock, including a motor, a transmission mechanism, a rotating shaft, a blocking arm, and a lock body, wherein the motor is connected to the rotating shaft through the transmission mechanism, the rotating shaft is fixedly connected to the blocking arm, the lock body includes a base and a left container and a right container fixed at both ends of the base, the motor and the transmission mechanism are placed in the left container, one end of the rotating shaft is connected to the transmission mechanism, and the other end is connected to the base and placed in the right container.

[0003] In the prior art taking this solution as an example, the transmission mechanism of the parking lock is complex, using motors, worms, turbines, connecting rods and other components for multi-stage transmission, and the smoothness and stability of operation are limited. When the parking lock is set outdoors, it is easily affected by harsh environments such as rain. Existing parking locks often have poor sealing effects. After long-term use, rainwater can easily leak into the transmission mechanism, causing damage to the motor. In addition, if the motor is damaged, the entire transmission mechanism needs to be disassembled and replaced, which is inefficient, time-consuming and labor-intensive. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a transmission mechanism for a flat parking lock of an intelligent parking space manager, which improves the durability and stability of the mechanism, facilitates motor replacement, and is suitable for use in harsh environments.

[0005] The object of the present invention is achieved through the following technical solution: the transmission mechanism of the intelligent parking space manager flat parking space lock comprises:

[0006] The main box has shaft holes on both sides for passing the rotating shaft, and the motor is installed in the main box;

[0007] The screw rod has two ends supported on the main housing and one end connected and driven by the motor;

[0008] The transmission assembly is arranged between the screw and the rotating shaft, and transmits the power of the screw to the rotating shaft. Both ends of the rotating shaft are supported on the main box, and one end of the rotating shaft passes through the main box to drive the flatbed parking lock;

[0009] A sealing assembly is installed at positions corresponding to the shaft holes on both sides of the main chassis to seal both ends of the rotating shaft relative to the main chassis; and

[0010] The cover assembly is fixed on the top of the main chassis.

[0011] As a further technical solution, the transmission assembly includes a nut slidably mounted on a screw rod. When the screw rod rotates, the nut is driven to slide between an upper limit position and a lower limit position. Protrusions are set on both sides of the nut. Each protrusion is rotatably connected to a connecting rod. The other end of each connecting rod is rotatably connected to a rocker arm. The rocker arm is stacked on the outside of the connecting rod and clamped on the rotating shaft to drive the rotating shaft to rotate.

[0012] As a further technical solution, a retaining ring groove is provided on the protrusion, and the connecting rod is inserted into the protrusion and fixed by the retaining ring; the connecting rod and the rocker arm are connected by a pin, and a retaining ring groove is also provided on the pin accordingly for installing the retaining ring.

[0013] As a further technical solution, a bottom mounting groove is opened in the main box for fixing the in-place sensing module, and the in-place sensing module is located below the upper limit position of the nut. A motor board module is also installed in the main box, and the motor board module controls the movement of the motor through signals. A magnet is fixed to the bottom of the nut through a magnetic steel bracket. When the magnet passes over the in-place sensing module, the in-place sensing module communicates with the motor board module to control the motor to stop moving.

[0014] As a further technical solution, both ends of the screw are supported on the main box through tapered bearings, and the tapered bearings are correspondingly installed in bearing installation grooves opened on the main box.

[0015] As a further technical solution, a buffer pad is arranged between the motor and the main case, a through hole is opened in the center of the buffer pad, and an adjustment screw hole is opened at a position corresponding to the through hole at the bottom of the main case for installing an adjusting screw. The adjusting screw is loosened or tightened by passing a loosening tool through the through hole, so as to facilitate the removal and placement of the buffer pad.

[0016] As a further technical solution, the sealing assembly includes a shaft pressure cover fixed at the shaft hole on one side of the main box, and a step is provided on the side of the rotating shaft close to the shaft pressure cover for sleeve installation of the shaft sealing sleeve. The shaft sealing sleeve cooperates with the shaft pressure cover to achieve sealing, and the end of the rotating shaft passes through the shaft pressure cover and is connected to the flatbed parking lock for transmission.

[0017] As a further technical solution, the sealing assembly also includes a sealing ring and a side cover fixed at the shaft hole on the other side of the main chassis, and the side cover presses the sealing ring against the main chassis to achieve sealing.

[0018] As a further technical solution, a chassis copper sleeve is sleeved on the rotating shaft inside the shaft sealing sleeve and the sealing ring to support the rotating shaft on the main chassis; a retaining ring groove is opened on the side of the rotating shaft close to the side cover for installing the retaining ring to clamp and limit the corresponding chassis copper sleeve, and the other chassis copper sleeve is clamped and limited by the shaft sealing sleeve; corresponding slots matching the chassis copper sleeve, shaft sealing sleeve and sealing ring are opened on the main chassis.

[0019] As a further technical solution, the cover assembly includes a large chassis cover, which is fixed to the top of the main chassis by locking screws, and the top of the main chassis and the large chassis cover are sealed by a sealing gasket. An installation groove is opened on the surface of the large chassis cover for installing foam and solar panels in sequence, and is pressed and fixed with a pressure plate. A connector is provided in the main chassis, and the solar panel is electrically connected to the motor through the connector to achieve power supply.

[0020] The beneficial effects of the present invention are:

[0021] 1. The symmetric and stacked design of the nuts, connecting rods and rocker arms in the transmission assembly makes the mechanism run smoothly and stably, improves the durability and stability of the mechanism, and makes the overall rotation more concise and efficient;

[0022] 2. A buffer pad is set between the motor and the main chassis. The buffer pad has an adjustable loose structure. The adjusting screw is screwed up by a loosening tool to lift the buffer pad, which is convenient for replacing the motor after the mechanism is stuck. The buffer pad also has a certain elasticity to ensure the stability of the mechanism;

[0023] 3. A shaft sealing sleeve structure is set on one side of the main chassis, and two sealing rings, one large and one small, are set on the other side. The sealing pad structure on the top of the main chassis and the raised structure on the main chassis with the same shape as the sealing ring can be well sealed to resist the harsh environment in which the product is used. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 .

[0025] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 .

[0026] Figure 3 Schematic diagram of the structure explosion of the present invention Figure 1 .

[0027] Figure 4 Schematic diagram of the structure explosion of the present invention Figure 2 (Hide cover assembly).

[0028] Figure 5 It is a structural schematic diagram of the main chassis in the present invention.

[0029] Figure 6 It is a schematic diagram of the structure after the motor, the rotating shaft, the screw and the transmission component are assembled in the present invention.

[0030] Figure 7 It is a schematic diagram of the three-dimensional structure of the nut in the present invention when it is in the lower limit position.

[0031] Figure 8It is a schematic diagram of the main structure when the nut is in the lower limit position in the present invention.

[0032] Fig. 9 It is a schematic diagram of the three-dimensional structure of the nut in the present invention when it is in the upper limit position.

[0033] Fig.10 It is a schematic diagram of the main structure when the nut is in the upper limit position in the present invention.

[0034] Explanation of the reference numerals: motor 11, screw 12, nut 13, connecting rod 14, rocker arm 15, rotating shaft 16, tapered bearing 17, retaining ring 18, pin 19, buffer pad 110, magnetic steel bracket 111, magnetic steel 112, joint 113, motor board module 114, in-position sensing module 115, protrusion 116, main chassis 21, chassis copper sleeve 22, shaft sealing sleeve 23, sealing ring 24, shaft pressure cover 25, side cover 26, sealing gasket 27, chassis cover 28, foam 29, solar panel 210, pressure plate 211, locking screw 212, shaft hole 213, bearing mounting groove 214, bottom mounting groove 215, adjusting screw hole 216, adjusting screw 217, loosening tool 31. DETAILED DESCRIPTION

[0035] The present invention will be described in detail below with reference to the accompanying drawings:

[0036] Example: As attached Figures 1 to 10 As shown, the transmission mechanism of the flat parking lock of the intelligent parking space manager includes a motor 11, a screw 12, a nut 13, a connecting rod 14, a rocker arm 15, a rotating shaft 16, a tapered bearing 17, a retaining ring 18, a pin 19, a buffer pad 110, a magnetic steel bracket 111, a magnetic steel 112, a joint 113, a motor board module 114, an in-position sensing module 115, a protrusion 116, a main chassis 21, a chassis copper sleeve 22, a shaft sealing sleeve 23, a sealing ring 24, a shaft pressure cover 25, a side cover 26, a sealing gasket 27, a chassis cover 28, a foam 29, a solar panel 210, a pressure plate 211, a locking screw 212, a shaft hole 213, a bearing mounting groove 214, a bottom mounting groove 215, an adjusting screw hole 216, an adjusting screw 217 and a loosening tool 31.

[0037] Reference Figure 5 , an axis hole 213 is respectively provided on both sides of the main chassis 21, and both ends of the rotating shaft 16 are inserted into the corresponding axis holes 213, and a support is correspondingly provided on the main chassis 21 outside the axis holes 213. The sealing components are installed at the positions corresponding to the axis holes 213 on both sides of the main chassis 21 (i.e., the positions where the support is located), such as Figure 1 , 2As shown in Figure 4, the sealing assembly includes a shaft pressure cover 25 fixed at the shaft hole 213 on one side of the main chassis 21, a step is set on the side of the rotating shaft 16 close to the shaft pressure cover 25, and the shaft sealing sleeve 23 is positioned and installed on the step. The shaft sealing sleeve 23 cooperates with the shaft pressure cover 25 to achieve sealing. The end of the rotating shaft 16 passes through the shaft pressure cover 25 and is connected to the flat parking lock for transmission. Further, the sealing assembly also includes a sealing ring 24 and a side cover 26 fixed at the shaft hole 213 on the other side of the main chassis 21. The side cover 26 presses the sealing ring 24 on the main chassis 21 to achieve sealing. A chassis copper sleeve 22 is sleeved on the rotating shaft 16 on the inner side of the shaft sealing sleeve 23 and the inner side of the sealing ring 24, and the rotating shaft 16 is supported on the main chassis 21. At the same time, a retaining ring groove is opened on the side of the rotating shaft 16 close to the side cover 26, and a retaining ring 18 is installed, so that the corresponding chassis copper sleeve 22 is clamped and limited, and the other chassis copper sleeve 22 is clamped and limited by the shaft sealing sleeve 23. Preferably, corresponding grooves matching the chassis copper sleeve 22, shaft sealing sleeve 23 and sealing ring 24 are opened on the main chassis 21 to facilitate placement and positioning, so that the sealing assembly can seal both ends of the rotating shaft 16 relative to the main chassis 21, thereby adapting to long-term use in harsh environments.

[0038] like Figure 4 , 5 As shown, the motor 11 is installed in the main box 21 (a motor installation groove is provided accordingly). Both ends of the screw rod 12 are supported on the main box 21 through the tapered bearing 17, and the tapered bearing 17 is correspondingly installed in the bearing installation groove 214 provided on the main box 21. At the same time, one end of the screw rod 12 is connected to the output end of the motor 11, and the motor 11 drives the screw rod 12 to rotate.

[0039] A transmission assembly is provided between the screw 12 and the rotating shaft 16, such as Figure 6 As shown, the transmission assembly includes a nut 13 slidably mounted on a screw rod 12. When the screw rod 12 rotates, the nut 13 is driven to the upper limit position (such as Fig. 9 , 10 as shown) and the lower limit position (as shown Figure 7 , 8 Further, protrusions 116 are provided on both sides of the nut 13, and each protrusion 116 is rotatably connected to a connecting rod 14, and the other end of each connecting rod 14 is rotatably connected to a rocker arm 15, so that the rocker arm 15 is stacked on the outside of the connecting rod 14 and clamped on the rotating shaft 16, driving the rotating shaft 16 to rotate, and the rocker arm 15 and the rotating shaft 16 are connected by a limit slot, and relative rotation does not occur.

[0040] Preferably, a retaining spring groove is provided on the protrusion 116, and the connecting rod 14 is inserted into the protrusion 116 and fixed by the retaining spring 18. At the same time, the connecting rod 14 is connected to the rocker arm 15 by a pin 19, and a retaining spring groove is also provided on the pin 19 for installing the retaining spring 18 to prevent the connecting rod 14 and the rocker arm 15 from slipping off.

[0041] Further, such as Figure 5 , 8 As shown in FIG. 10 , a bottom mounting groove 215 is provided in the main case 21, and a position sensing module 115 is fixedly installed in the bottom mounting groove 215, and the position sensing module 115 is located below the upper limit position of the nut 13. A motor board module 114 is also installed in the main case 21, and the motor board module 114 controls the movement of the motor 11 through a signal. At the same time, a magnetic steel 112 is fixed at the bottom of the nut 13 through a magnetic steel bracket 111. When the magnetic steel 112 passes over the position sensing module 115, the position sensing module 115 communicates with the motor board module 114 to control the motor 11 to stop moving, thereby preventing the shaft 16 and the nut 13 from moving excessively.

[0042] Reference Figure 4 , 6 A buffer pad 110 is arranged between the motor 11 and the main chassis 21. A through hole is opened in the center of the buffer pad 110. An adjusting screw hole 216 is opened at the bottom of the main chassis 21 at a position corresponding to the through hole for installing an adjusting screw 217. The adjusting screw 217 is loosened or tightened by passing the loosening tool 31 through the through hole, so as to facilitate the removal and placement of the buffer pad 110.

[0043] Preferably, a cover assembly is fixedly installed on the top of the main box 21, and the cover assembly includes a large box cover 28, which is fixed to the top of the main box 21 by locking screws 212, and the top of the main box 21 and the large box cover 28 are sealed by a sealing gasket 27. An installation groove is provided on the surface of the large box cover 28, and foam 29 and solar panel 210 are installed in the installation groove in sequence, and are pressed and fixed by a pressing plate 211. A joint 113 is also provided in the main box 21, and the solar panel 210 is electrically connected to the motor 11 through the joint 113 to realize power supply.

[0044] The assembly process of the present invention is as follows: steps are provided at both ends of the screw 12 to facilitate the installation of the tapered bearing 17, a fixing hole is provided on one end face of the screw 12 to match the output shaft of the motor 11, the nut 13 is mounted on the screw 12 and protrusions 116 are provided on both sides, a magnetic steel bracket 111 is provided below the nut 13, a magnetic steel 112 is installed on the magnetic steel bracket 111, and a position sensing module 115 is provided below the magnetic steel 112. Connecting rods 14 are provided on both sides of the nut 13, rocking arms 15 are provided on both sides of the connecting rod 14, and the rocking arms 15 are provided with holes designed to match the rotating shaft 16, and a hole shaft design matching the protrusion 116 of the nut 13 is provided at one end of the connecting rod 14, and the connecting rod 14 and the rocking arm 15 are provided with corresponding holes and connected by pins 19. The buffer pad 110 is installed in the main box 21 and is tightly attached to one end face of the motor 11. A through hole is provided in the middle of the buffer pad 110. An adjustment screw hole 216 matching the center of the through hole is provided in the main box 21. An adjustment screw 217 is installed in the adjustment screw hole 216. A motor plate module 114 is provided on one side of the motor 11.

[0045] The main case 21 is provided with shaft holes 213 on both sides, and the rotating shaft 16 is supported on the main case 21 after passing through the shaft holes 213 on both sides of the main case 21. One side of the rotating shaft 16 is provided with a step, and the other side is provided with a groove. The sealing assembly is matched with the center of the shaft holes 213 on both sides of the main case 21, and a retaining ring groove is provided on the rotating shaft 16. The shaft sealing assembly includes a case copper sleeve 22, a shaft sealing sleeve 23, a sealing ring 24, a shaft pressure cover 25 and a side cover 26 installed on both sides of the main case 21. The main case 21 is provided with a groove matching the case copper sleeve 22, the shaft sealing sleeve 23 and the sealing ring 24. A shaft pressure cover 25 is provided on one side of the main case 21, and the shaft pressure cover 25 is designed to be matched with the main case 21. The shaft pressure cover 25 is provided with a circle of protrusions that match the shaft sealing sleeve 23. The shaft sealing sleeve 23 is provided with multiple layers of semicircular protrusions inside, and a circle of protrusions is provided at one end. A side cover 26 is provided on the other side of the main case 21, and the side cover 26 is designed to be matched with the main case 21. A circle of protrusions is also provided on the side cover 26. Corresponding slots matching the tapered bearing 17, the motor 11 and the buffer pad 110 are arranged in the main case 21. The main case 21 is also provided with an adjustment screw hole 216 corresponding to the adjustment screw 217.

[0046] The main case 21 is also provided with a cavity for installing the motor board module 114, and the in-position sensing module 115 is fixed in the bottom mounting groove 215. At the same time, the main case 21 is provided with a wiring groove for the in-position sensing module 115 and the motor board module 114. In addition, the main case 21 is provided with a wire outlet, and a plurality of ear-shaped mounting holes are provided on the outside of the main case 21. A large case cover 27 is provided on the top of the main case 21 and is designed to be matched with the main case 21. The large case cover 27 is provided with corresponding installation slots such as foam 29, solar panel 210, and pressure plate 211. The pressure plate 211 is designed to be matched with the large case cover 28. One end of the large case cover 28 is provided with a wire outlet for the solar panel 210, and the corresponding main case 21 is provided with a space-avoiding shape design with the wire outlet. Two threaded holes are also provided on one side of the main case 21 to facilitate the installation of other accessories. A groove for installing a sealing gasket 27 is provided at the outer edge of the top of the main chassis 21. A protrusion with the same shape as the entire circle is also provided on the inner side of the sealing gasket 27. A groove is provided on the sealing gasket 27. A circle of protrusions is provided on the chassis cover 27 to match the groove above the sealing gasket 27 to achieve a compression seal.

[0047] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and inventive concept of the present invention should fall within the protection scope of the claims attached to the present invention.

Claims

1. A transmission mechanism of a flat parking lock for an intelligent parking space manager, characterized in that: include: The main box (21) has shaft holes (213) on both sides thereof for passing the rotating shaft (16), and the motor (11) is installed in the main box (21); The screw rod (12) has two ends supported on the main housing (21), and one end of the screw rod is connected and driven by the motor (11); A transmission assembly is arranged between the screw rod (12) and the rotating shaft (16) to transmit the power of the screw rod (12) to the rotating shaft (16). Both ends of the rotating shaft (16) are supported on the main box (21), and one end thereof passes through the main box (21) to drive the flatbed parking lock; A sealing assembly is installed at positions on both sides of the main housing (21) corresponding to the shaft hole (213) to seal both ends of the rotating shaft (16) relative to the main housing (21); and The cover plate assembly is fixed on the top of the main box (21).

2. The transmission mechanism of the smart parking space manager flat parking space lock according to claim 1 is characterized by: The transmission assembly comprises a nut (13) slidably mounted on a screw rod (12). When the screw rod (12) rotates, the nut (13) is driven to slide between an upper limit position and a lower limit position. Protrusions (116) are arranged on both sides of the nut (13). Each protrusion (116) is rotatably connected to a connecting rod (14). The other end of each connecting rod (14) is rotatably connected to a rocker arm (15). The rocker arm (15) is stacked on the outside of the connecting rod (14) and clamped on a rotating shaft (16), driving the rotating shaft (16) to rotate.

3. The transmission mechanism of the smart parking space manager flat parking space lock according to claim 2 is characterized by: The protrusion (116) is provided with a retaining ring groove, and the connecting rod (14) is inserted into the protrusion (116) and fixed by the retaining ring (18); the connecting rod (14) and the rocker arm (15) are connected by a pin (19), and the pin (19) is also provided with a retaining ring groove for installing the retaining ring (18).

4. The transmission mechanism of the smart parking space manager flat parking space lock according to claim 2 or 3, characterized in that: The main box (21) is provided with a bottom mounting groove (215) for fixing and mounting an in-position sensing module (115), and the in-position sensing module (115) is located below the upper limit position of the nut (13). A motor board module (114) is also installed in the main box (21), and the motor board module (114) controls the movement of the motor (11) through a signal; a magnetic steel (112) is fixed to the bottom of the nut (13) through a magnetic steel bracket (111), and when the magnetic steel (112) passes over the in-position sensing module (115), the in-position sensing module (115) communicates with the motor board module (114) to control the motor (11) to stop moving.

5. The transmission mechanism of the smart parking space manager flat parking space lock according to claim 1 is characterized by: Both ends of the screw rod (12) are supported on the main housing (21) through tapered bearings (17), and the tapered bearings (17) are correspondingly installed in bearing installation grooves (214) provided on the main housing (21).

6. The transmission mechanism of the smart parking space manager flat parking space lock according to claim 1 is characterized by: A buffer pad (110) is arranged between the motor (11) and the main chassis (21), a through hole is provided at the center of the buffer pad (110), and an adjustment screw hole (216) is provided at a position corresponding to the through hole at the bottom of the main chassis (21) for installing an adjustment screw (217). The adjustment screw (217) is loosened or tightened by passing an adjustment tool (31) through the through hole, so as to facilitate the removal and placement of the buffer pad (110).

7. The transmission mechanism of the smart parking space manager flat parking space lock according to claim 1 is characterized by: The sealing assembly comprises a shaft pressure cover (25) fixed at a shaft hole (213) on one side of the main housing (21); a step is provided on a side of the rotating shaft (16) close to the shaft pressure cover (25) for sleeve-mounting a shaft sealing sleeve (23); the shaft sealing sleeve (23) cooperates with the shaft pressure cover (25) to achieve sealing; and the end of the rotating shaft (16) passes through the shaft pressure cover (25) and is connected to the flatbed parking lock for transmission.

8. The transmission mechanism of the smart parking space manager flat parking space lock according to claim 7 is characterized by: The sealing assembly also includes a sealing ring (24) and a side cover (26) fixed at the shaft hole (213) on the other side of the main case (21), and the side cover (26) presses the sealing ring (24) against the main case (21) to achieve sealing.

9. The transmission mechanism of the smart parking space manager flat parking space lock according to claim 8, characterized in that: A case copper sleeve (22) is sleeved on the rotating shaft (16) on the inner side of the shaft sealing sleeve (23) and the inner side of the sealing ring (24), so as to support the rotating shaft (16) on the main case (21); a retaining ring groove is provided on the rotating shaft (16) on one side close to the side cover (26), for installing a retaining ring (18), clamping and limiting the corresponding case copper sleeve (22), and the other case copper sleeve (22) is compressed and limited by the shaft sealing sleeve (23); and slots matching the case copper sleeve (22), the shaft sealing sleeve (23) and the sealing ring (24) are correspondingly provided on the main case (21).

10. The transmission mechanism of the smart parking space manager flat parking space lock according to claim 1, characterized in that: The cover plate assembly comprises a chassis cover (28), which is fixed to the top of the main chassis (21) by means of locking screws (212), and the top of the main chassis (21) and the chassis cover (28) are sealed by means of a sealing gasket (27). A mounting groove is provided on the surface of the chassis cover (28), which is used to sequentially install the foam (29) and the solar panel (210), and is pressed and fixed by means of a pressing plate (211). A connector (113) is provided in the main chassis (21), and the solar panel (210) is electrically connected to the motor (11) through the connector (113) to realize power supply.

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