CT probe placing equipment

Abstract

The invention discloses CT probe placement equipment, and relates to the technical field of medical instruments, the CT probe placement equipment comprises a first placement plate and a CT probe, the first placement plate is in threaded connection with a fixing bolt, one side, close to the CT probe, of the first placement plate is movably connected with a second placement plate, and the CT probe is mounted on one side, away from the first placement plate, of the second placement plate. The first placing plate and the second placing plate are jointly provided with a connecting locking assembly, the connecting locking assembly comprises a plurality of fixing blocks installed on the second placing plate, limiting rods movably connected to the fixing blocks and an abutting block arranged on the first placing plate in a sliding mode, and a plurality of fixing grooves are formed in the side, close to the second placing plate, of the first placing plate; according to the CT probe mounting device, a CT probe can be easily and conveniently mounted between the first mounting plate and the second mounting plate in a one-button mode through the connecting and locking assembly, the mounting process is simplified, and the mounting efficiency is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a CT probe placement device. Background Art

[0002] CT probe is the probe used in computed tomography technology and is an important component of CT scanning equipment. It is mainly used to receive and convert X-ray signals, which are then processed by a computer to generate detailed images of the human body. The placement equipment of the CT probe is mainly a support frame or a mounting plate, etc., which is a device specifically used to connect the CT probe and CT scanning equipment together.

[0003] After searching, the invention patent with Chinese patent number CN107693040A discloses a CT probe placement device for CT department. Compared with the prior art, the invention patent with Chinese patent number CN107693040A includes a probe, the upper surface of the probe is connected to the lower surface of the connecting shell through a spring shock absorber, a ball head universal joint is fixed in the middle position of the upper surface of the connecting shell, the upper end of the ball head universal joint is fixedly connected to the middle position of the lower surface of the fixed plate, and an adjustment device is fixed in the middle position of the front end and the middle position of the right end of the upper surface of the connecting shell, and the upper end of the adjustment device is in contact with the lower surface of the fixed plate. The staff adjusts the overlapping length of the support screw and the spiral tube to calibrate the detection range of the probe to improve the detection accuracy of the probe; the air pump allows the air filtered by the air filter to enter the cavity, and the air in the cavity dissipates heat to the probe through the air outlet to ensure the stable operation of the probe; the air inlet of the cavity and the air outlet of the air pump are connected through a connecting hose, and the connecting shell and the air pump are fixed separately to prevent the vibration generated by the operation of the air pump from affecting the performance of the probe.

[0004] However, in actual use, the above device is usually connected to the mounting frame of the CT probe and the scanning device through conventional fixing bolts. There may be X-ray tubes, filters, collimators, reference detectors, detectors and various electronic circuits near the CT probe, which needs to be installed under limited space. If maintenance or replacement is required, the bolts may need to be removed first, which increases the complexity of the connection and installation of the CT probe and the scanning device. During the operation of the CT machine, the bolts may become loose if they are not tightly connected or are vibrated, thereby affecting the stability and scanning quality of the CT probe. Therefore, a CT probe placement device is proposed. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings in the prior art that connecting the CT probe to the scanning equipment through fixing bolts is relatively complicated, and the bolts may become loose if they are not tightly connected or are subject to vibration, thereby affecting the stability of the CT probe and the scanning quality, and to propose a CT probe placement device.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A CT probe placement device comprises a first placement plate and a CT probe, wherein the first placement plate is threadedly connected to a fixing bolt, a side of the first placement plate close to the CT probe is movably connected to a second placement plate, the CT probe is installed on a side of the second placement plate away from the first placement plate, a connection locking assembly is commonly provided on the first placement plate and the second placement plate, the connection locking assembly comprises a plurality of fixing blocks installed on the second placement plate, a limit rod movably connected to the fixing block, and a pressing block slidably arranged on the first placement plate, a plurality of fixing grooves are provided on a side of the first placement plate close to the second placement plate, a fifth opening groove is provided on an inner side of the fixing groove, a pressure groove is provided on a side of the second placement plate close to the first placement plate, a plurality of the fixing grooves and the fixing grooves are respectively and simultaneously inserted into the fixing grooves and the fifth opening grooves to connect the first placement plate and the second placement plate, the pressing block is inserted into the pressure groove to lock the first placement plate and the second placement plate, and one-button installation simplifies the installation process and significantly improves the installation efficiency;

[0008] A connection warning component is provided on the second mounting plate, and the connection warning component includes a plurality of tilt sensors movably connected on the second mounting plate, and a plurality of movable rods movably connected on the tilt sensors. The plurality of movable rods are inserted into grooves of fixing bolts for connection. When the fixing bolts rotate, the tilt sensors are driven to rotate synchronously to send out abnormal signals for warning, so that maintenance work can be carried out in time to ensure the stability of the connection.

[0009] The above technical solution further includes:

[0010] A square block is symmetrically installed on one side of the first mounting plate close to the second mounting plate, and a square groove is symmetrically opened inside the second mounting plate. The square groove and the square block are movably connected, and the size of the square block opening is adapted to the size of the square groove, so that the first mounting plate and the second mounting plate are pre-connected.

[0011] A first opening groove is provided on one side of the fixed block close to the fifth opening groove, the limiting rod is slidably connected to the first opening groove, a first spring is installed at one end of the limiting rod away from the fifth opening groove, an end of the first spring away from the fixed groove is fixedly connected to the inner wall of the first opening groove, and the limiting rod can be freely contracted in the first opening groove by the first spring.

[0012] The size of the opening of the fixing slot is matched with the size of the fixing block, and the size of the opening of the fifth opening slot is matched with the size of the limiting rod, so that the first mounting plate and the second mounting plate are connected more tightly.

[0013] The fixing block is movably connected with an extrusion rod inside, a square plate is installed on the side of the extrusion rod, a second opening groove is opened on the side of the fixing block away from the fixing groove, a second spring is installed inside the second opening groove, the second spring and the square plate are fixedly connected, a pressing plate is installed at one end of the extrusion rod away from the limiting rod, and the first placement plate and the second placement plate are connected by inserting the fixing block and the limiting rod into the fixing groove and the fifth opening groove respectively at the same time.

[0014] A sliding groove is provided on one side of the first mounting plate close to the second mounting plate, a sliding block is slidably arranged inside the sliding groove, a threaded rod is rotatably connected to the inner side of the sliding groove, the threaded rod and the sliding block are threadedly connected, and the sliding block is fixedly connected to a clamping block on one side close to the second mounting plate, so as to drive the clamping block to be inserted into the pressure groove to lock the first mounting plate and the second mounting plate.

[0015] A plurality of third opening slots are provided inside the first mounting plate, the tilt sensor is rotatably connected to the inner side of the third opening slot, a fourth opening slot is provided inside the third opening slot, the fourth opening slot is connected to the third opening slot, an extension plate is installed on the outer side of the tilt sensor, third springs are installed on both sides of the extension plate, and one end of the two third springs away from the extension plate is fixedly connected to the inner wall of the fourth opening slot, so that the tilt sensor can rotate with the fixing bolt.

[0016] A plurality of fixed rods are installed on the side of the tilt sensor close to the first mounting plate, the movable rod is slidably connected to the fixed rod, a fourth spring is installed on the side of the movable rod close to the tilt sensor, and one end of the fourth spring away from the movable rod is fixedly connected to the inner wall of the fixed rod. The tilt sensor and the fixing bolt can be rotatably connected by inserting the end face and the groove of the fixing bolt respectively.

[0017] The limiting rod is located on the movement track of the extrusion rod, and when the extrusion rod moves, the limiting rod can be squeezed to be inserted into the fifth opening groove.

[0018] The tilt sensor can send out an abnormal signal when rotating, can send out a normal signal when making a movement other than rotating, and can send out an early warning after the fixing bolt is loosened.

[0019] The present invention has the following beneficial effects:

[0020] 1. In the present invention, the CT probe can be easily and conveniently installed between the first mounting plate and the second mounting plate by connecting the locking assembly, which not only simplifies the installation process, but also significantly improves the installation efficiency. At the same time, the inclined surface of the pressure groove can be cleverly squeezed by the tightening block to generate a continuous and stable centripetal force, ensuring that the second mounting plate is tightly fitted to the first mounting plate, thereby achieving a more solid and reliable connection effect. When equipment maintenance or replacement of the CT probe is required, the first mounting plate and the second mounting plate need only be simply separated to easily complete the disassembly and reinstallation work. This process simplifies the complexity of the connection and greatly improves the convenience of maintenance operations.

[0021] 2. In the present invention, by connecting the early warning component, the tilt sensor can be limited after rotating to a certain extent, so as to prevent the fixing bolts from loosening to a greater extent. At the same time, a rotation signal can be generated after the tilt sensor rotates a small extent, thereby performing early warning. The staff can check the cause of the loosening of the fixing bolts and perform maintenance work to ensure the stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A top cross-sectional structural schematic diagram of a CT probe placement device proposed by the present invention;

[0023] Figure 2 It is a schematic diagram of the side cross-sectional structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the top structure of the placement plate in the present invention;

[0025] Figure 4 It is a schematic diagram of the bottom structure of the placement plate in the present invention;

[0026] Figure 5 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 6 It is a schematic diagram of the cross-sectional structure of the fixing rod in the present invention;

[0028] Figure 7 for Figure 1 A schematic diagram of the structure enlargement in the middle;

[0029] Figure 8 for Figure 7 A magnified schematic diagram of the structure at B in the middle;

[0030] Fig. 9 for Figure 2 A magnified schematic diagram of the structure at C in the middle;

[0031] Fig.10 for Figure 4 Enlarged schematic diagram of the structure at point D in the middle.

[0032] In the figure: 1. first mounting plate; 2. second mounting plate; 3. fixing bolt; 4. CT probe; 5. fixing rod; 6. fixing slot; 7. first opening slot; 8. limiting rod; 9. first spring; 10. extrusion rod; 11. pressing plate; 12. square plate; 13. second opening slot; 14. second spring; 15. square slot; 16. square block; 17. sliding slot; 18. threaded rod; 19. sliding block; 20. pressure slot; 21. pressing block; 22. third opening slot; 23. tilt sensor; 24. fourth opening slot; 25. extension plate; 26. third spring; 27. fixing rod; 28. fourth spring; 29. ​​movable rod; 30. fifth opening slot. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Embodiment 1

[0035] like Figure 1-Figure 10As shown, a CT probe placement device proposed by the present invention includes a first placement plate 1 and a CT probe 4. The first placement plate 1 is threadedly connected to the fixing bolt 3, and the first placement plate 1 can be installed on the scanning device. The side of the first placement plate 1 close to the CT probe 4 is movably connected with the second placement plate 2, and the CT probe 4 is installed on the side of the second placement plate 2 away from the first placement plate 1. The first placement plate 1 and the second placement plate 2 are jointly provided with a connection locking component, and the connection locking component includes a plurality of fixing blocks 5 installed on the second placement plate 2, a limit rod 8 movably connected to the fixing block 5, and a pressing block 21 slidably arranged on the first placement plate 1. A plurality of fixing grooves 6 are opened on the side of the first placement plate 1 close to the second placement plate 2, and a fifth opening groove 30 is opened on the inner side of the fixing groove 6. The second placement plate 2 is close to the second placement plate 2. A pressure groove 20 is provided on one side near the first mounting plate 1, and multiple 5 and fixing grooves 6 are respectively inserted into the fixing groove 6 and the fifth opening groove 30 to connect the first mounting plate 1 and the second mounting plate 2, and the tightening block 21 is inserted into the pressure groove 20 to lock the first mounting plate 1 and the second mounting plate 2. One-click installation simplifies the installation process and significantly improves the installation efficiency. A connection warning component is provided on the second mounting plate 2, and the connection warning component includes multiple tilt sensors 23 movably connected on the second mounting plate 2, and multiple movable rods 29 movably connected on the tilt sensor 23. The multiple movable rods 29 are inserted into the grooves of the fixing bolts 3 for connection. When the fixing bolts 3 rotate, the tilt sensor 23 is driven to rotate synchronously to send out an abnormal signal for warning, so that maintenance work can be carried out in time to ensure the stability of the connection.

[0036] A square block 16 is symmetrically installed on one side of the first mounting plate 1 close to the second mounting plate 2, and a square groove 15 is symmetrically opened inside the second mounting plate 2. The square groove 15 and the square block 16 are movably connected, and the size of the opening of the square block 16 is adapted to the size of the square groove 15, so that the first mounting plate 1 and the second mounting plate 2 are pre-connected.

[0037] A first opening groove 7 is provided on one side of the fixed block 5 close to the fifth opening groove 30, and a limiting rod 8 is slidably connected to the first opening groove 7. A first spring 9 is installed at one end of the limiting rod 8 away from the fifth opening groove 30, and one end of the first spring 9 away from the fixing groove 6 is fixedly connected to the inner wall of the first opening groove 7. The limiting rod 8 can be freely contracted in the first opening groove 7 through the first spring 9.

[0038] The size of the opening of the fixing slot 6 matches the size of the fixing block 5 , and the size of the opening of the fifth opening slot 30 matches the size of the limiting rod 8 , so that the first mounting plate 1 and the second mounting plate 2 are connected more tightly.

[0039] The fixed block 5 is movably connected with an extrusion rod 10 inside, and a square plate 12 is installed on the side of the extrusion rod 10. A second opening groove 13 is opened on the side of the fixed block 5 away from the fixed groove 6, and a second spring 14 is installed inside the second opening groove 13. The second spring 14 is fixedly connected to the square plate 12. A pressing plate 11 is installed at one end of the extrusion rod 10 away from the limiting rod 8. The first mounting plate 1 and the second mounting plate 2 are connected by inserting the fixed block 5 and the limiting rod 8 into the fixed groove 6 and the fifth opening groove 30 respectively at the same time.

[0040] A sliding groove 17 is provided on one side of the first placing plate 1 close to the second placing plate 2, a sliding block 19 is slidingly provided inside the sliding groove 17, a threaded rod 18 is rotatably connected to the inner side of the sliding groove 17, the threaded rod 18 and the sliding block 19 are threadedly connected, the sliding block 19 is fixedly connected to a clamping block 21 on one side close to the second placing plate 2, and can drive the clamping block 21 to be inserted into the pressure groove 20 to lock the first placing plate 1 and the second placing plate 2.

[0041] In this embodiment, when the CT probe 4 needs to be connected to the device, the first placement plate 1 can be connected to the device through the fixing bolt 3, and then the pressing plate 11 is pressed, and the extrusion rod 10 is pushed at the same time until the extrusion rod 10 moves into the first opening groove 7, and the inclined surface of the limiting rod 8 is squeezed at the same time. When the extrusion rod 10 moves, the square plate 12 can be driven to move, and the second spring 14 is pushed by the square plate 12 until the second spring 14 is contracted. When the extrusion rod 10 squeezes the inclined surface of the limiting rod 8, the limiting rod 8 is retracted into the first opening groove 7 by the extrusion force. At this time, the first spring 9 is contracted, and then the first placement plate 1 is The square block 16 is aligned with the square groove 15 on the second placement plate 2 until the square block 16 is inserted into the square groove 15, so as to realize the pre-connection of the first placement plate 1 and the second placement plate 2. At this time, the fixing block 5 is inserted into the fixing groove 6, and the pressing plate 11 is released at the same time. At this time, the second spring 14 in the contracted state is reset, and the squeezing rod 10 is driven to reset through the square plate 12. At this time, the squeezing rod 10 no longer squeezes the limiting rod 8, and the first spring 9 in the contracted state is reset, and the limiting rod 8 is driven to reset, so that the limiting rod 8 is inserted into the fifth opening groove 30. At this time, the first placement plate 1 and the second placement plate 2 can be quickly and conveniently connected together;

[0042] When the first mounting plate 1 and the second mounting plate 2 are connected together, the pressing block 21 is inserted into the pressure groove 20, and then the threaded rod 18 can be rotated. The force generated by rotating the threaded rod 18 can drive the sliding block 19 to slide along the sliding groove 17 and drive the pressing block 21 to move, so that the pressing block 21 squeezes the inclined surface of the pressure groove 20. The squeezing force causes the second mounting plate 2 to generate a force to approach the first mounting plate 1, ensuring that the second mounting plate 2 is tightly fitted to the first mounting plate 1, achieving a more solid and reliable connection effect, thereby placing the CT probe 4 on the equipment through the first mounting plate 1 and the second mounting plate 2. If maintenance work is required, only the first mounting plate 1 and the second mounting plate 2 need to be separated, which is convenient for disassembly and reinstallation, making maintenance and replacement work simpler.

[0043] Embodiment 2

[0044] like Figure 1-Figure 10 As shown, based on the first embodiment, a plurality of third opening slots 22 are opened inside the first mounting plate 1, and the tilt sensor 23 is rotatably connected to the inner side of the third opening slot 22, and a fourth opening slot 24 is opened inside the third opening slot 22, and the fourth opening slot 24 is connected to the third opening slot 22, and an extension plate 25 is installed on the outer side of the tilt sensor 23, and third springs 26 are installed on both sides of the extension plate 25, and one end of the two third springs 26 away from the extension plate 25 is fixedly connected to the inner wall of the fourth opening slot 24, so that the tilt sensor 23 can rotate with the fixing bolt 3.

[0045] A plurality of fixed rods 27 are installed on the side of the tilt sensor 23 close to the first mounting plate 1, a movable rod 29 is slidably connected to the fixed rod 27, a fourth spring 28 is installed on the side of the movable rod 29 close to the tilt sensor 23, and one end of the fourth spring 28 away from the movable rod 29 is fixedly connected to the inner wall of the fixed rod 27. The tilt sensor 23 can be rotatably connected to the fixing bolt 3 by inserting the end face and the groove of the fixing bolt 3 respectively.

[0046] The limiting rod 8 is located on the movement track of the extrusion rod 10 , and the extrusion rod 10 can squeeze the limiting rod 8 to be inserted into the fifth opening groove 30 when it moves.

[0047] The tilt sensor 23 can send out an abnormal signal when rotating, can send out a normal signal when making a movement other than rotating, and can send out an early warning after the fixing bolt 3 is loosened.

[0048] In this embodiment, when the second mounting plate 2 is connected to the first mounting plate 1, the end of the fixing bolt 3 can be squeezed by the movable rod 29, and the movable rod 29 is retracted into the fixing rod 27, the fourth spring 28 is contracted, and part of the movable rod 29 is inserted into the groove of the fixing bolt 3. At this time, the fixing bolt 3 and the second mounting plate 2 can be rotatably connected by the movable rod 29. When the CT probe 4 performs scanning, the tilt sensor 23 generates a movement other than self-rotation. At this time, the tilt sensor 23 generates a normal signal. If the fixing bolt 3 is loose, the tilt sensor 23 can be driven to rotate by the movable rod 29. First, the extension plate 25 can be driven to rotate in the fourth opening groove 24. At the same time, the third spring 26 is used to limit the position, so that the tilt sensor 23 is limited after a certain rotation, so as to avoid a larger loosening of the fixing bolt 3. At the same time, after the tilt sensor 23 performs a small self-rotation, a self-rotation signal can be generated, so as to perform early warning work, and the staff can check the cause of the loosening of the fixing bolt 3 and perform maintenance work.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A CT probe placement device, comprising a first placement plate (1) and a CT probe (4), characterized in that: The first mounting plate (1) is threadedly connected to the fixing bolt (3); a side of the first mounting plate (1) close to the CT probe (4) is movably connected to the second mounting plate (2); the CT probe (4) is mounted on a side of the second mounting plate (2) away from the first mounting plate (1); a connection locking assembly is provided on the first mounting plate (1) and the second mounting plate (2); the connection locking assembly comprises a plurality of fixing blocks (5) mounted on the second mounting plate (2), a limiting rod (8) movably connected to the fixing block (5), and a pressing block (21) slidably provided on the first mounting plate (1). ), a plurality of fixing grooves (6) are provided on a side of the first placement plate (1) close to the second placement plate (2), a fifth opening groove (30) is provided on the inner side of the fixing groove (6), a pressure groove (20) is provided on a side of the second placement plate (2) close to the first placement plate (1), a plurality of fixing blocks (5) and limiting rods (8) are respectively and simultaneously inserted into the fixing grooves (6) and the fifth opening grooves (30) to connect the first placement plate (1) and the second placement plate (2), and the pressing block (21) is inserted into the pressure groove (20) to lock the first placement plate (1) and the second placement plate (2); The second mounting plate (2) is provided with a connection warning component, the connection warning component comprising a plurality of tilt sensors (23) movably connected to the second mounting plate (2), and a plurality of movable rods (29) movably connected to the tilt sensors (23), the plurality of movable rods (29) being inserted into grooves of the fixing bolts (3) for connection, and when the fixing bolts (3) rotate, the tilt sensors (23) are driven to rotate synchronously to send out abnormal signals for warning.

2. A CT probe placement device according to claim 1, characterized in that: A square block (16) is symmetrically mounted on one side of the first mounting plate (1) close to the second mounting plate (2); a square groove (15) is symmetrically opened inside the second mounting plate (2); the square groove (15) and the square block (16) are movably connected, and the size of the opening of the square block (16) is adapted to the size of the square groove (15).

3. A CT probe placement device according to claim 2, characterized in that: A first opening slot (7) is provided on a side of the fixed block (5) close to the fifth opening slot (30); the limiting rod (8) is slidably connected to the first opening slot (7); a first spring (9) is installed at one end of the limiting rod (8) away from the fifth opening slot (30); and an end of the first spring (9) away from the fixed slot (6) is fixedly connected to an inner wall of the first opening slot (7).

4. The CT probe placement device according to claim 3, characterized in that: The size of the opening of the fixing groove (6) matches the size of the fixing block (5), and the size of the opening of the fifth opening groove (30) matches the size of the limiting rod (8).

5. The CT probe placement device according to claim 1, characterized in that: The fixing block (5) is movably connected to an extrusion rod (10) inside, a square plate (12) is installed on the side of the extrusion rod (10), a second opening groove (13) is opened on the side of the fixing block (5) away from the fixing groove (6), a second spring (14) is installed inside the second opening groove (13), the second spring (14) is fixedly connected to the square plate (12), and a pressing plate (11) is installed on the end of the extrusion rod (10) away from the limiting rod (8).

6. The CT probe placement device according to claim 1, characterized in that: A sliding groove (17) is provided on a side of the first mounting plate (1) close to the second mounting plate (2); a sliding block (19) is slidably arranged inside the sliding groove (17); a threaded rod (18) is rotatably connected to the inner side of the sliding groove (17); the threaded rod (18) and the sliding block (19) are threadedly connected; and the sliding block (19) is fixedly connected to a pressing block (21) on a side close to the second mounting plate (2).

7. The CT probe placement device according to claim 1, characterized in that: A plurality of third opening slots (22) are provided inside the first placement plate (1); the tilt sensor (23) is rotatably connected to the inner side of the third opening slot (22); a fourth opening slot (24) is provided inside the third opening slot (22); the fourth opening slot (24) and the third opening slot (22) are connected to each other; an extension plate (25) is installed on the outer side of the tilt sensor (23); third springs (26) are installed on both sides of the extension plate (25); and the ends of the two third springs (26) away from the extension plate (25) are fixedly connected to the inner wall of the fourth opening slot (24).

8. The CT probe placement device according to claim 1, characterized in that: A plurality of fixed rods (27) are installed on a side of the tilt sensor (23) close to the first placement plate (1); the movable rod (29) is slidably connected to the fixed rod (27); a fourth spring (28) is installed on a side of the movable rod (29) close to the tilt sensor (23); an end of the fourth spring (28) away from the movable rod (29) is fixedly connected to the inner wall of the fixed rod (27).

9. The CT probe placement device according to claim 5, characterized in that: The limiting rod (8) is located on the movement track of the extrusion rod (10).

10. The CT probe placement device according to claim 1, characterized in that: The tilt sensor (23) can send out an abnormal signal when rotating, and the tilt sensor (23) can send out a normal signal when making a movement other than rotating.

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