A flip-plate logistics sorting equipment

Abstract

The present invention discloses a flip-plate logistics sorting equipment, which is characterized by also including a contactless driving mechanism that drives the locking member to unlock so that the cargo-carrying part rotates relative to the supporting part under the action of its own gravity to drop the package. The contactless driving mechanism includes a first magnet, a second magnet, and a driver arranged on one side of the track to drive the second magnet to move. When the second magnet and the first magnet are close, they are in a state of same polarity relative to each other. The driver is a rotary driver or a linear driver. The invention uses the setting of a contactless driving mechanism. When the vehicle body moves to the unloading point while traveling on the track, the contactless driving mechanism drives the cargo-carrying part on the vehicle body to flip over and drop the goods. There is no contact between the parts during the entire driving process, thereby achieving friction-free, reducing noise, and increasing service life. At the same time, the setting of the magnet does not require additional energy consumption, saves costs, and has high reliability.

Description

Technical Field

[0001] The present invention relates to logistics sorting equipment, in particular to a flip-plate type logistics sorting equipment. Background Art

[0002] Most of the existing logistics sorting equipment relies on devices for auxiliary sorting. When the sorting equipment reaches the target position, it activates other devices through sensors and controllers. For example, an electromagnetic structure is installed on the sorting trolley. When the electromagnetic structure is powered on, it magnetically attracts the cargo part on the sorting trolley and fixes the position of the cargo part. When the sorting trolley moves to the corresponding delivery position, the controller disconnects the power to the electromagnet to make it lose its magnetism, and then the cargo part is turned over by the weight of the cargo on the cargo part to complete the unloading. However, this method of removing the electromagnet is not reliable enough. First, it needs to connect the circuit, the circuit is complicated, and it is easy to cause the problem of line entanglement for the moving trolley. The electromagnetic type is also prone to overheating, short circuit, etc., which is prone to failure during use and has high cost.

[0003] Another method is to arrange an inclined guide plate on the track, and then arrange a roller corresponding to the position of the guide plate on the sorting trolley. When the sorting trolley moves, the roller moves along the guide plate and squeezes one end of the cargo-carrying part along the inclined surface, thereby driving the cargo-carrying part to flip. However, in this method, when the sorting trolley moves, the roller will collide with the guide plate when it contacts the guide plate, which is easy to be damaged, and there is a lot of noise when it collides and moves on the guide plate. In addition, in the prior art, the body of the sorting trolley is basically assembled by processing plates. The overall processing technology is complicated, the cost is high, and the processing cycle is long. The processing accuracy of the sorting trolley parts is high. Once the accuracy of some parts is deviated, the size of the assembled sorting trolley will be deviated, resulting in poor consistency of several sorting trolleys, and causing problems in the connection between several trolleys due to the size deviation. Secondly, in the prior art, additional connecting parts (such as chains, etc.) are required to connect the several carts, which results in a complex overall structure, complicated connection operation, many parts and high cost. Therefore, a flip-plate logistics sorting device is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems and to provide a flip-plate type logistics sorting equipment.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solution: a flip-plate logistics sorting equipment, including a vehicle body that moves on a track and is equipped with a plurality of wheels, a cargo-carrying part, a support part connected to the cargo-carrying part at one end and the vehicle body at the other end, and a locking part arranged on the support part or the vehicle body for fixing the cargo-carrying part; its characteristics also include a contactless driving mechanism that drives the locking part to unlock so that the cargo-carrying part rotates relative to the supporting part under the action of its own gravity to drop the package, the contactless driving mechanism includes a first magnet, a second magnet and a driver arranged on one side of the track to drive the second magnet to move, the first magnet is arranged on the locking part, and the second magnet is in a state of same pole relative to the first magnet when close to the first magnet, and the driver is a rotary driver or a linear driver.

[0006] Further preferably, the vehicle body is any one of a link vehicle body, a chain vehicle body, a sheet metal vehicle body, and a profile vehicle body with an integrated structure or a split structure.

[0007] Further preferably, when the second magnet and the first magnet are in a state of facing each other with the same poles, an angle is formed.

[0008] Further preferably, the support part rotatably connected to the cargo carrying part comprises a fixed part arranged at one end or both ends of the vehicle body, and a movable part arranged at one end or both ends of the cargo carrying part, and the movable part is connected to the fixed part through a rotating member.

[0009] More preferably, it also includes a flip limit plate installed on the fixed part for flipping and dropping the bag when the cargo carrying part is flipped.

[0010] Further preferably, when the fixed part is a structure arranged at both ends of the vehicle body, a connecting part is further provided between the fixed parts at both ends, and the connecting part includes a base plate for mounting the locking member and ear plates arranged at both ends of the base plate for connecting the base plate and the fixed part.

[0011] More preferably, it also includes a linkage member hinged between the vehicle body and the fixed part, which is used to lift the supporting part when receiving a thrust during weighing.

[0012] More preferably, it also includes an elastic buffer fixed to the vehicle body or the linkage member for resetting the support part.

[0013] Further preferably, the locking member includes a lock hook arranged on the cargo part, a lock body arranged on the vehicle body or the base plate, and a trigger rod movably installed on the lock body through a pin shaft, one end of the trigger rod is provided with a clamping portion for locking the lock hook, and the other end is provided with a trigger portion for installing the first magnet; it also includes a torsion spring installed on the pin shaft, one end of which is connected to the trigger rod and the other end is connected to the lock body for driving the trigger rod to reset.

[0014] Further preferably, it also includes a magnet seat installed on the trigger part, the first magnet is fixed on the magnet seat and the front side of the magnet seat is equipped with an anti-collision rubber block for preventing the first magnet from colliding and being damaged, and the lower end of the anti-collision rubber block protrudes from the bottom of the first magnet.

[0015] The beneficial effects of the present invention are as follows: by setting a contactless driving mechanism, when the vehicle body moves to the unloading point while traveling on the track, the contactless driving mechanism drives the cargo carrying part on the vehicle body to flip over and release the cargo, and there is no contact between the parts during the entire driving process, thereby achieving friction-free, reducing noise, and increasing service life; at the same time, the magnet setting is adopted, no additional energy consumption is required, cost is saved, and reliability is high; At the same time, the driver is set to drive the second magnet on the track to move, so that the second magnet is moved away from or in the trigger position by changing the position of the second magnet. When the second magnet is close to the first magnet and is in the trigger position, when the vehicle body moves to the second magnet position, the first magnet and the second magnet repel each other and push the cargo carrying part to flip and unload materials. When the second magnet is far away from the trigger position, the cargo carrying part will not be triggered to flip when the vehicle body moves to this position, thereby avoiding the situation where the vehicle body is triggered by mistake and causes the material to be unloaded by mistake. The vehicle body is arranged as an integrated vehicle body, thereby improving the vehicle body processing efficiency and the consistency of the vehicle body, avoiding deviations in the height positions of the first magnets arranged on several vehicle bodies due to errors in vehicle body size, thereby avoiding collisions between the first magnet and the second magnet on the vehicle body due to deviations; and by being arranged as an integrated vehicle body, the vehicle body strength, operational stability and connection efficiency between vehicle bodies can also be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a structural schematic diagram of the vehicle body in the present invention; Figure 3 It is a partial structural schematic diagram of the present invention; Figure 4 It is a partial structural schematic diagram of the present invention; Figure 5 It is a partial structural schematic diagram of the present invention; Figure 6 It is a schematic diagram of the cross-sectional structure of the trigger rod in the present invention; Figure 7 It is a schematic diagram of the local structure of the second magnetic steel in the present invention; Figure 8 It is a schematic diagram of the local structure when the present invention is used; Fig. 9 It is a structural schematic diagram when the present invention is used.

[0017] Legend: 1. Vehicle body; 11. Protrusion; 12. Recess; 13. Buffer; 2. Cargo carrying part; 21. Lock; 3. Support part; 31. Fixed part; 32. Moving part; 33. Connecting part; 331. Base plate; 332. Ear plate; 4. Trigger lever; 41. Clamping part; 42. Trigger part; 43. Torsion spring; 44. Magnetic seat; 45. Anti-collision rubber block; 46. Lock body; 51. First magnet; 52. Second magnet; 53. Driver; 54. Carrier; 55. Transmission part; 6. Flip limit plate; 7. Linkage part; 8. Elastic buffer; 9. Speed ​​reducer; 91. Driving wheel; 92. Driven wheel; 93. Friction plate; 94. Reset lever; 10. Foreign object cover. DETAILED DESCRIPTION

[0018] Next, we will further explain the flip-plate type logistics sorting equipment described in the present invention with reference to the accompanying drawings.

[0019] It should be noted that all directional indications such as up, down, front, back, etc. in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0020] In the present invention, unless otherwise clearly defined and limited, the terms "connection", "fixation" and the like should be understood in a broad sense; for example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] See also Figure 1-Figure 9 As shown in, a flap-type logistics sorting equipment comprises a vehicle body 1 moving on a track and equipped with a plurality of wheels, a cargo-carrying part 2, a support part 3 connected to the cargo-carrying part 2 at one end and connected to the vehicle body 1 at the other end, and a locking member arranged on the support part 3 or the vehicle body 1 for fixing the cargo-carrying part 2; the feature also includes a contactless driving mechanism for driving the locking member to unlock so that the cargo-carrying part 2 rotates relative to the support part 3 under the action of its own gravity to drop the package, the contactless driving mechanism comprises a first magnet 51, a second magnet 52 and a driver 53 arranged on one side of the track to drive the second magnet 52 to move, the first magnet (51) is arranged on the locking member, the second magnet 52 and the first magnet 51 are in a state of facing each other with the same poles when approaching, and the driver 53 is a rotary driver 53 or a linear driver 53; Through the setting of the contactless driving mechanism, when the vehicle body 1 moves to the unloading point while traveling on the track, the contactless driving mechanism drives the cargo carrying part 2 on the vehicle body 1 to flip over and release the cargo. The entire release process and driving process are contactless and frictionless, which reduces noise, reduces maintenance work, and increases the service life of the equipment. At the same time, the setting of the magnet does not require additional energy consumption, thereby achieving energy saving, noise reduction, and cost saving. At the same time, the driver 53 is set to drive the second magnet 52 on the track to move, so as to change the position of the second magnet 52 so that the second magnet 52 is away from the trigger position. When the second magnet 52 is in the trigger position, when the vehicle body 1 moves to the position of the second magnet 52, the first magnet 51 and the second magnet 52 repel each other and push the cargo carrying part 2 to flip and unload materials. When the second magnet 52 is away from the trigger position, the cargo carrying part 2 will not be triggered to flip when the vehicle body 1 moves to this position, thereby avoiding the situation where the vehicle body 1 is triggered by mistake and causes the wrong unloading of materials. The rotary driver 53 can be any one of other rotary drivers such as a rotary cylinder, a swing cylinder, a motor, etc.; when the rotary driver 53 is used, the second magnet 52 is driven to rotate by the rotary driver 53, so that the second magnet 52 switches between the trigger position and the position away from the trigger position, so that it drives the cargo carrying part 2 on the vehicle body 1 to flip and drop the bag or not flip. When the rotary driver 53 is used, the driver 53 can be placed on one side of the track through a carrier 54, and a transmission member 55 can be set between the driver 53 and the second magnet 52, one end of the transmission member 55 is connected to the second magnet 52 and the other end is connected to the driver 53. The linear drive 53 can be any one of other linear drives such as an electric push rod, a push-pull electromagnet, a cylinder, a servo drive, a synchronous belt, a voice coil motor, etc.

[0022] In one embodiment, the vehicle body 1 is any one of a link vehicle body, a chain vehicle body, a sheet metal vehicle body, and a profile vehicle body of an integrated structure or a split structure; The vehicle body 1 of the one-piece structure can be formed by integral molding, while the components of the vehicle body 1 of the split structure can be formed by integral molding and then assembled; The one-piece formed vehicle body 1 has high processing efficiency and high consistency, which avoids deviations in the height of the first magnets 51 arranged on several vehicle bodies 1 due to size errors of the vehicle body 1, thereby avoiding collisions between the first magnets 51 and the second magnets 52 on the vehicle body 1 due to deviations; In one embodiment, a convex portion 11 may be provided at one end of the vehicle body 1, and a concave portion 12 may be provided at the other end. When adjacent vehicle bodies 1 are connected, the convex portion 11 is inserted into the concave portion 12 of the adjacent vehicle body 1 and then connected using a connecting piece, so that the vehicle bodies are connected end to end. The vehicle body 1 in the present application can be used as a base of the sorting device, and also as a connecting piece between adjacent sorting devices.

[0023] The vehicle body may also be provided with a protective foreign body cover 10.

[0024] In one embodiment, when the second magnet 52 and the first magnet 51 are in a state of facing each other with the same poles, an angle is formed; the angle existing when the second magnet 52 and the first magnet 51 are driven to face each other with the same poles can prevent the first magnet 51 from generating magnetic attraction when the side position of the first magnet 51 corresponds to the side position of the second magnet 52 during the movement of the vehicle body 1, thereby causing jamming in the movement of the vehicle body 1 and affecting the smoothness of the entire operation.

[0025] In one embodiment, the support part 3 rotatably connected to the cargo carrying part 2 includes a fixed part 31 arranged at one end or both ends of the vehicle body 1, and a movable part 32 arranged at one end or both ends of the cargo carrying part 2, and the movable part 32 is connected to the fixed part 31 through a rotating part; the fixed part 31 is used to connect to the vehicle body 1, and the movable part 32 is used to connect to the cargo carrying part 2, and the movable part 32 and the fixed part 31 are connected through a rotating part, so that the movable part 32 and the cargo carrying part 2 can rotate around the fixed part 31 based on the rotating part.

[0026] In one embodiment, it also includes a flip limit plate 6 installed on the fixed part 31 for use when the cargo carrying part 2 is flipped and the bag is dropped; through the setting of the flip limit plate 6, the flip angle of the cargo carrying part 2 when flipped is limited.

[0027] In one embodiment, when the fixed portion 31 is a structure disposed at both ends of the vehicle body 1, a connecting portion 33 is further disposed between the fixed portions 31 at both ends, and the connecting portion 33 includes a base plate 331 for mounting a locking member, and ear plates 332 disposed at both ends of the base plate 331 for connecting the base plate 331 with the fixed portion 31; A pair of buffers 13 may be installed on the base plate 331 or the vehicle body 1 to buffer the overturning of the cargo carrying portion.

[0028] In one embodiment, it also includes a linkage member 7 hinged between the vehicle body 1 and the fixed part 31, which is used to support the support part 3 when it is pushed during weighing; and an elastic buffer member 8 fixed to the vehicle body 1 or the linkage member 7 for resetting the support part 3; By setting the linkage member 7, the support part 3 is movably placed on the vehicle body 1, and when the cargo on the cargo carrying part 2 is weighed, the support part 3 can be lifted by the linkage member 7; The elastic buffer 8 is provided to reset the support part 3 after it is lifted, and at the same time plays an elastic buffering role for the up and down movements of the support part 3 and the cargo carrying part 2.

[0029] In one embodiment, the locking member comprises a lock hook 21 disposed on the cargo portion 2, a lock body 46 disposed on the vehicle body 1 or the base plate 331, and a trigger rod 4 movably mounted on the lock body 46 via a pin shaft, wherein one end of the trigger rod 4 is provided with a clamping portion 41 for locking the lock hook 21, and the other end is provided with a trigger portion 42 for mounting the first magnet 51; and further comprises a torsion spring 43 mounted on the pin shaft, one end of which is connected to the trigger rod 4 and the other end of which is connected to the lock body 46 and is used to drive the trigger rod 4 to reset; A clamping portion 41 is provided at one end of the trigger rod 4, and the clamping portion 41 is used to clamp the lock hook 21 on the cargo carrying portion 2, so as to prevent the cargo carrying portion 2 from turning over during the operation of the vehicle body 1 when the cargo carrying portion 2 is clamped; a triggering portion 42 is provided at the other end of the trigger rod 4, and the triggering portion 42 is used to install a first magnet 51, and the first magnet 51 and the second magnet 52 cooperate to push the triggering portion 42 to move, and the triggering portion 42 drives the trigger rod 4 to rotate with the movable connection point with the base plate 331 as the base point, thereby driving the clamping portion 41 to rotate, so that it is disengaged from the clamping of the lock hook 21 on the cargo carrying portion 2, and at this time, the cargo carrying portion 2 can be driven by the gravity of the cargo to turn over and unload; The torsion spring 43 is provided to drive the trigger lever 4 to be in a locked state. After unlocking, the trigger lever 4 is driven to reset to the locked state by the reset force of the torsion spring 43. When the cargo loading part 2 is pressed down to reset, it can cooperate with the clamping part 41 to complete the clamping again.

[0030] In one embodiment, when the fixed portion 31 and the movable portion 32 are respectively disposed at only one end of the vehicle body 1 and the cargo carrying portion 2 , the lock hook 21 is mounted on the cargo carrying portion, and the lock body 46 can be mounted on the vehicle body 1 .

[0031] In one embodiment, it also includes a magnet seat 44 installed on the trigger part 42, the first magnet 51 is fixed on the magnet seat 44, and an anti-collision rubber block 45 is installed on the front side of the magnet seat 44 to prevent the first magnet 51 from being damaged by collision, and the lower end of the anti-collision rubber block 45 protrudes from the bottom of the first magnet 51; through the provision of the anti-collision rubber block 45, the first magnet 51 installed on the vehicle body 1 is prevented from being damaged by collision; by installing the anti-collision rubber block 45 on the front side of the magnet seat 44, and its lower end protrudes from the bottom of the first magnet 51, the anti-collision rubber block 45 first contacts and scrapes the second magnet 52 during the movement of the vehicle body 1, thereby scraping off the debris on the second magnet 52.

[0032] In the present application, a motor base plate is also installed on the track, on which a reduction motor 9, a driving wheel 91 movably installed on the motor base plate and transmission-connected to the reduction motor 9, a driven wheel 92 movably installed on the motor base plate, and a friction plate 93 installed on the vehicle body 1 and between the driving wheel 91 and the driven wheel 92 are installed; When the vehicle body 1 moves on the track, the reduction motor 9 is started, and the reduction motor 9 drives the driving wheel 91 to rotate. When the driving wheel 91 rotates, the friction between the friction plate 93 drives the vehicle body 1 to move along the track; A reset rod 94 for driving the cargo-carrying part 2 to reset is also provided on the track; through the setting of the reset rod 94, when the vehicle body 1 moves along the track and contacts the cargo-carrying part 2 through the reset rod 94, the cargo-carrying part 2 flips along the reset rod 94 until the cargo-carrying part 2 contacts and cooperates with the clamping part 41 to complete the locking, so that the cargo-carrying part 2 on the vehicle body 1 is automatically locked during the movement of the track; During use of the present invention: the controller controlling the entire sorting device controls the reduction motor 9 to start, and the reduction motor 9 drives several car bodies 1 to move along the track. During the movement of the car bodies 1, before one of the car bodies 1 moves to the set delivery position, the controller controls the driver 53 at the delivery position to start, and the driver 53 drives the second magnet 52 to rotate. When the car body 1 continues to move, the anti-collision rubber block 45 on the front side of the first magnet 51 first scrapes the surface of the second magnet 52. When the positions of the first magnet 51 and the second magnet 52 correspond, the trigger part 42 is driven by the repulsion between the first magnet 51 and the second magnet 52. The trigger part 42 drives the trigger rod 4 to rotate along the movable connection piece with the base plate 331 as the base point, and drives the trigger rod 4 to rotate during the rotation. The clamping part 41 is actuated to realize unlocking. After the cargo part 2 is unlocked, the cargo part 2 is flipped over by the weight of the cargo on the cargo part 2, so that the package on the cargo part 2 is dropped into the compartment. When the vehicle body 1 moves out of the delivery position, it continues to move along the track. At the same time, the controller controls the driver 53 of the delivery position to start, driving the second magnet 52 to reset and return to the dormant position, so as to prevent the subsequent equipment carrying the package that does not belong to the compartment from mistakenly dropping the package into the compartment; when the vehicle body 1 after dropping the package moves along the track, when the cargo part 2 on the vehicle body 1 contacts the reset rod 94, the cargo part 2 moves along the reset rod 94, and gradually rotates and resets under the action of friction until the lock hook 21 on the cargo part 2 contacts the clamping part 41 and completes the clamping, and then the cargo part 2 is locked.

[0033] The protection scope of the present invention is not limited to the above embodiments and their variations. Conventional modifications and replacements made by those skilled in the art based on the contents of this embodiment all fall within the protection scope of the present invention.

Claims

1. A flap-type logistics sorting device, comprising a vehicle body (1) moving on a track and equipped with a plurality of wheels, a cargo-carrying part (2), a support part (3) connected at one end to the cargo-carrying part (2) and at the other end to the vehicle body (1), and a locking member arranged on the support part (3) or the vehicle body (1) for fixing the cargo-carrying part (2); the device is characterized in that it also comprises a contactless driving mechanism for driving the locking member to unlock so that the cargo-carrying part (2) rotates relative to the support part (3) under the action of its own gravity to drop the package, the contactless driving mechanism comprising a first magnet (51), a second magnet (52) and a driver (53) arranged on one side of the track to drive the second magnet (52) to move, the first magnet (51) being arranged on the locking member, the second magnet (52) and the first magnet (51) being in a state of facing each other with the same poles when approaching each other, and the driver (53) being a rotary driver or a linear driver.

2. The flip-plate logistics sorting equipment according to claim 1 is characterized in that: The vehicle body (1) is any one of a link vehicle body, a chain vehicle body, a sheet metal vehicle body, and a profile vehicle body of an integrated structure or a split structure.

3. The flip-plate logistics sorting equipment according to claim 1 is characterized in that: When the second magnet (52) and the first magnet (51) are in a state of facing each other with the same poles, an angle is formed.

4. The flip-plate logistics sorting equipment according to claim 1 is characterized in that: The support portion (3) rotatably connected to the cargo carrying portion (2) comprises a fixed portion (31) arranged at one end or both ends of the vehicle body (1) and a movable portion (32) arranged at one end or both ends of the cargo carrying portion (2), wherein the movable portion (32) is connected to the fixed portion (31) via a rotating member.

5. The flip-plate logistics sorting equipment according to claim 4 is characterized in that: It also includes a turning limit plate (6) mounted on the fixed portion (31) and used when the cargo carrying portion (2) turns over and drops a bag.

6. The flip-plate logistics sorting equipment according to claim 4 is characterized in that: When the fixed portion (31) is a structure arranged at both ends of the vehicle body (1), a connecting portion (33) is further provided between the fixed portions (31) at both ends, and the connecting portion (33) comprises a base plate (331) for mounting a locking member, and ear plates (332) arranged at both ends of the base plate (331) for connecting the base plate (331) and the fixed portion (31).

7. A flip-plate logistics sorting device according to claim 4, 5 or 6, characterized in that: It also includes a linkage member (7) which is hinged between the vehicle body (1) and the fixed portion (31) and is used to lift and support the support portion (3) when receiving a thrust during weighing.

8. The flip-plate logistics sorting equipment according to claim 7, characterized in that: It also includes an elastic buffer (8) fixed to the vehicle body (1) or the linkage member (7) and used when the support part (3) is reset.

9. The flip-plate logistics sorting equipment according to claim 6, characterized in that: The locking member comprises a lock hook (21) arranged on the cargo carrying portion (2), a lock body (46) arranged on the vehicle body (1) or the base plate (331), and a trigger rod (4) movably mounted on the lock body (46) via a pin shaft, wherein one end of the trigger rod (4) is provided with a clamping portion (41) for locking the lock hook (21), and the other end is provided with a trigger portion (42) for mounting a first magnet (51); and further comprises a torsion spring (43) mounted on the pin shaft, one end of which is connected to the trigger rod (4) and the other end of which is connected to the lock body (46) for driving the trigger rod (4) to reset.

10. The flip-plate logistics sorting equipment according to claim 9, characterized in that: It also includes a magnet seat (44) mounted on the trigger portion (42), the first magnet (51) being fixed on the magnet seat (44), and an anti-collision rubber block (45) for preventing the first magnet (51) from being damaged by collision is installed on the front side of the magnet seat (44), the lower end of the anti-collision rubber block (45) protruding from the bottom of the first magnet (51).

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