Pedal device of X-ray photography flat bed

Abstract

The utility model discloses a pedal device of an X-ray radiography flat bed, which comprises a microswitch, a trigger plate, a pedal plate, a mounting frame and a rotary positioning mechanism, the trigger plate and the microswitch are both positioned below the pedal plate, the trigger plate is fixed on the pedal plate and is used for being in contact with the microswitch under the driving of the pedal plate to close the microswitch, and the mounting frame is fixed on the mounting frame. A mounting groove penetrating front and back is formed in the mounting frame, the trigger plate is inserted into the mounting groove in the horizontal direction from front to back and connected with the top of the mounting frame through a plurality of elastic assemblies, the rotary positioning mechanism is located below the pedal, and the rotary positioning mechanism and the microswitch are located in the mounting groove and mounted at the bottom of the mounting frame. The pedal plate is installed on the rotary positioning mechanism and can rotate under stress, when the pedal plate rotates by a preset angle, the pedal plate can be blocked by the rotary positioning mechanism and cannot continue to rotate, and at the moment, the trigger plate makes contact with the microswitch so that the microswitch can be closed; the device has the advantages of simple structure, low production and installation difficulty and convenience in subsequent maintenance.

Description

Technical Field

[0001] The utility model relates to a foot-operated device, in particular to a foot-operated device for an X-ray photography flat bed. Background Art

[0002] To meet the requirements of taking lying position photos of different parts of patients, the bed board of the X-ray photography flat bed needs to be moved in four directions, front-back and left-right. In the existing X-ray photography flat bed, two groups of permanent magnet suction iron components are installed at the bottom of the bed board, and an iron plate is fixed under the bed board. When the two groups of permanent magnet suction iron components are electrified, a magnetic field is generated and attracted to the iron plate. At this time, the bed board is fixed and in a braking state. When the two groups of permanent magnet suction iron components are powered off, no magnetic field can be generated, and they are in a released state with the iron plate. At this time, the bed board is not fixed by the iron plate and can be manually moved in four directions, front-back, left-right along the horizontal plane. In actual use, both groups of permanent magnet suction iron components are powered by a 24V switch power supply. A control signal for power supply or not is given through a control board inside the X-ray photography flat bed to realize the power-on or power-off of the two groups of permanent magnet suction iron components, so as to realize the attraction and release of the two groups of permanent magnet suction iron components and the iron plate. Among them, the control board gives a control signal for power supply or not according to the signal generated by the foot-operated device. There is a micro switch inside the foot-operated device. The user steps on the foot-operated device to turn on or off the micro switch, thereby generating a corresponding signal and outputting it to the control board. When the micro switch is turned on, the control board gives a control signal for power supply. At this time, the two groups of permanent magnet suction iron components are electrified. When the micro switch is turned off, the control board gives a control signal for non-power supply. At this time, the two groups of permanent magnet suction iron components are not electrified.

[0003] In the foot-operated device of the existing X-ray photography flat bed, the installation of the micro switch needs to be reasonably selected according to the structural layout of the foot-operated device to ensure installation at a safe and convenient position. After the micro switch is installed, it should be ensured that the direction of the conduction force of the external trigger plate is consistent with the movement direction of the driving rod of the micro switch, and the stroke of the conduction force of the trigger plate cannot exceed the movable stroke of the driving rod of the micro switch, otherwise the micro switch will be damaged. Therefore, whether the micro switch is reasonably installed directly affects its service life, resulting in the malfunction of the X-ray photography flat bed. To meet the installation requirements of the micro switch, the structure of the foot-operated device of the existing X-ray photography flat bed is relatively complex, which not only makes the production and installation difficult, but also brings great difficulties to subsequent maintenance. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a foot-operated device for an X-ray photography flat bed with a relatively simple structure, small production and installation difficulty, and convenient subsequent maintenance.

[0005] The technical solution adopted by the present utility model to solve the above technical problems is as follows: A foot pedal device for an X-ray photography flat bed, comprising a microswitch, a trigger plate and a foot pedal. The trigger plate and the microswitch are both located below the foot pedal. The trigger plate is fixed on the foot pedal and is used to contact the microswitch under the drive of the foot pedal to make it closed. The foot pedal device for the X-ray photography flat bed further comprises a mounting frame and a rotation positioning mechanism. A mounting groove penetrating from front to back is provided on the mounting frame. The trigger plate is inserted into the mounting groove horizontally from front to back and is connected to the top of the mounting frame through a plurality of elastic components. The rotation positioning mechanism is located below the foot pedal. The rotation positioning mechanism and the microswitch are respectively located in the mounting groove and are mounted on the bottom of the mounting frame. The foot pedal is mounted on the rotation positioning mechanism and can rotate under force. When the foot pedal rotates a preset angle, the foot pedal will be blocked by the rotation positioning mechanism and cannot continue to rotate. At this time, the trigger plate contacts the microswitch to make it closed.

[0006] The rotation positioning mechanism comprises two rotation positioning components, which are distributed on the left and right sides of the microswitch. Each rotation positioning component comprises a fixed block, a rotating block, a rotating shaft and a limiting rod. The fixed block and the rotating block are distributed left and right. The fixed block is fixed on the bottom of the mounting frame. The rotating shaft and the limiting rod both pass through the fixed block and the rotating block. The limiting rod is fixed to the fixed block. The rotating shaft is fixed to the rotating block. A limiting hole is provided on the rotating block. The limiting rod passes through the limiting hole. The limiting hole is used to match with the limiting rod so that the rotating block is blocked and cannot continue to rotate after rotating a preset angle relative to the fixed block along with the rotating shaft. The foot pedal is fixedly connected to the rotating blocks of the two rotation positioning components.

[0007] The limiting hole is an oblong hole along the vertical direction.

[0008] The limiting rod is fixed to the fixed block through a fastening nut. A washer is arranged inside the rotating block. The rotating shaft passes through the washer and is fixed to the rotating block through an axial elastic retaining ring.

[0009] The limiting rod is realized by using an axially located screw.

[0010] The number of the elastic components is two, and the two elastic components are distributed at intervals left and right. Each of the elastic components includes a spring and two screws, which are respectively referred to as the first screw and the second screw. The first screw is installed on the top of the mounting bracket and extends into the mounting groove. The second screw is installed on the foot pedal and extends into the mounting groove. The spring is located in the mounting groove and sleeved on the first screw and the second screw. The upper and lower ends of the spring are respectively in contact connection with the top of the mounting bracket and the foot pedal.

[0011] Both of the two screws are hexagon socket head cap screws.

[0012] Compared with the prior art, the advantages of the present utility model are as follows: by providing a mounting bracket and a rotation positioning mechanism, the mounting bracket is provided with a mounting groove penetrating from front to back. The trigger plate is inserted into the mounting groove horizontally from front to back and is connected to the top of the mounting bracket through a plurality of elastic components. The rotation positioning mechanism is located below the foot pedal. The rotation positioning mechanism and the microswitch are respectively located in the mounting groove and installed at the bottom of the mounting bracket. The foot pedal is installed on the rotation positioning mechanism and can rotate under force. When the foot pedal rotates by a preset angle, the foot pedal will be blocked by the rotation positioning mechanism and cannot continue to rotate. At this time, the trigger plate contacts the microswitch and makes it closed. In the initial state, the foot pedal maintains a horizontal state. When the foot pedal is stepped on, the foot pedal rotates to drive the trigger plate to rotate synchronously, and the elastic component is compressed. When the foot pedal rotates by a preset angle, at this time, the trigger plate contacts the microswitch and makes it closed, and the foot pedal will be blocked by the rotation positioning mechanism and cannot continue to rotate. After the microswitch is used, the foot pedal is released, and the elastic component resets to reset the foot pedal and the trigger plate, and the microswitch is turned off. Thus, through the positioning of the rotation positioning mechanism, the present utility model can make the stroke of the trigger plate transmitting force not exceed the movable stroke of the driving rod of the microswitch. The overall structure is simple. Only by setting the rotation angle of the foot pedal according to the actual application can the matching with the position of the microswitch be achieved, avoiding damage to the use of the microswitch, with relatively small production and installation difficulty and convenient subsequent maintenance. Description of the Drawings

[0013] Figure 1 is a perspective view of the foot pedal device of the X-ray photography flat bed of the present utility model;

[0014] Figure 2 is an exploded view of the foot pedal device of the X-ray photography flat bed of the present utility model;

[0015] Figure 3 is a front view of the foot pedal device of the X-ray photography flat bed of the present utility model;

[0016] Figure 4 is a structural schematic diagram of the microswitch of the foot pedal device of the X-ray photography flat bed of the present utility model;

[0017] Figure 5 This is an exploded view of the rotation positioning assembly of the foot pedal device of the X-ray photography flat bed of the present utility model. Specific embodiments

[0018] The present utility model will be further described in detail below in conjunction with the embodiments with reference to the drawings.

[0019] Embodiment 1: As Figures 1 to 4 shown, a foot pedal device of an X-ray photography flat bed includes a micro switch 1, a trigger plate 2 and a foot pedal 3. The trigger plate 2 and the micro switch 1 are both located below the foot pedal 3. The trigger plate 2 is fixed on the foot pedal 3 and is used to contact the micro switch 1 to make it closed under the drive of the foot pedal 3. The foot pedal device of the X-ray photography flat bed further includes a mounting bracket 4 and a rotation positioning mechanism. A mounting groove 5 penetrating from front to back is provided on the mounting bracket 4. The trigger plate 2 is inserted into the mounting groove 5 horizontally from front to back and is connected to the top of the mounting bracket 4 through a plurality of elastic components 6. The rotation positioning mechanism is located below the foot pedal 3. The rotation positioning mechanism and the micro switch 1 are respectively located in the mounting groove 5 and are mounted on the bottom of the mounting bracket 4. The foot pedal 3 is mounted on the rotation positioning mechanism and can rotate under force. When the foot pedal 3 rotates by a preset angle, the foot pedal 3 will be blocked by the rotation positioning mechanism and cannot continue to rotate. At this time, the trigger plate 2 contacts the micro switch 1 to make it closed.

[0020] In this embodiment, in the initial state, the foot pedal 3 is in a horizontal state. When the foot pedal 3 is stepped on, the foot pedal 3 rotates to drive the trigger plate 2 to rotate synchronously, and the elastic component 6 is compressed. When the foot pedal 3 rotates by a preset angle, at this time, the trigger plate 2 contacts the micro switch 1 to make it closed, and the foot pedal 3 is blocked by the rotation positioning mechanism and cannot continue to rotate. After the micro switch 1 is used, the foot pedal 3 is released, and the elastic component 6 resets to reset the foot pedal 3 and the trigger plate 2, and the micro switch 1 is turned off. Thus, the present utility model can make the stroke of the trigger plate 2 transmitting force not exceed the stroke that the driving rod of the micro switch 1 can move through the positioning of the rotation positioning mechanism. The overall structure is simple. Only by setting the rotation angle of the foot pedal 3 according to the actual application can the matching with the position of the micro switch 1 be realized, avoiding damage to the use of the micro switch 1, with relatively small production and installation difficulty and convenient subsequent maintenance.

[0021] Embodiment 2: This embodiment is basically the same as Embodiment 1, the difference being that: in this embodiment, as Figure 5As shown in the figure, the rotation positioning mechanism includes two rotation positioning components 7, which are distributed on the left and right sides of the microswitch 1. Each rotation positioning component 7 includes a fixed block 8, a rotating block 9, a rotating shaft 10 and a limiting rod 11. The fixed block 8 and the rotating block 9 are distributed left and right. The fixed block 8 is fixed to the bottom of the mounting bracket 4. The rotating shaft 10 and the limiting rod 11 both pass through the fixed block 8 and the rotating block 9. The limiting rod 11 is fixed to the fixed block 8, and the rotating shaft 10 is fixed to the rotating block 9. A limiting hole 12 is provided on the rotating block 9, and the limiting rod 11 passes through the limiting hole 12. The limiting hole 12 is used to match with the limiting rod 11, so that the rotating block 9 cannot continue to rotate after rotating a preset angle relative to the fixed block 8 along with the rotating shaft 10; the foot pedal 3 is fixedly connected to the rotating blocks 9 of the two rotation positioning components 7.

[0022] In this embodiment, when the foot pedal 3 is stepped on, the foot pedal 3 drives the rotating block 9 and the rotating shaft 10 of each rotation positioning component 7 to rotate relative to the fixed block 8. When the foot pedal 3 rotates to a preset angle, the limiting rod 11 is stuck by the limiting hole 12. Due to the blocking of the limiting rod 11, the foot pedal 3, the rotating block 9 and the rotating shaft 10 cannot continue to rotate. At this time, it shows that the foot pedal 3 has rotated a preset angle, so that the trigger plate 2 makes a predetermined contact with the microswitch 1, and the microswitch 1 closes and starts to work. After the microswitch 1 finishes working, the foot pedal 3 is released, and the elastic component 6 resets to drive the foot pedal 3 and the trigger plate 2 to rotate in the reverse direction. At this time, the rotating block 9 is not limited by the limiting rod 11 and can also rotate in the reverse direction, realizing the reset of the rotating block 9, the foot pedal 3 and the trigger plate 2. The trigger plate 2 moves away from the microswitch 1, and the microswitch 1 disconnects.

[0023] Embodiment Three: This embodiment is basically the same as Embodiment Two, the difference is that: in this embodiment, the limiting hole 12 is an oblong hole along the vertical direction.

[0024] In this embodiment, the current conventional oblong hole is used as the limiting hole 12, and the positioning of the limiting rod 11 is realized by using the characteristics of the oblong hole itself. The structure is simple, and the processing and installation are more convenient.

[0025] Embodiment Four: This embodiment is basically the same as Embodiment Three, the difference is that: in this embodiment, the limiting rod 11 is fixed to the fixed block 8 through a fastening nut 13, and a washer 14 is arranged inside the rotating block 9. The rotating shaft 10 passes through the washer 14 and is fixed to the rotating block 9 through an axial circlip 15.

[0026] In this embodiment, the limiting rod 11 is realized by using an axially located screw, which is convenient for installation and disassembly.

[0027] In this embodiment, when assembling the rotary positioning component 7, the washer 14 is inserted into the rotating block 9, and then the fixing block 8 and the rotating block 9 are combined with the rotating shaft 10. The axial circlip 15 is used to clamp the rotating shaft 10 and the rotating block 9. The shaft position screw is passed through the limiting hole 12 in the rotating block 9 and then screwed into the threaded hole of the fixing block 8, and tightened with the fastening nut 13, so as to complete the assembly of the rotary positioning component 7.

[0028] Embodiment 5: This embodiment is basically the same as Embodiment 4, except that: in this embodiment, the number of the elastic components 6 is two, and the two elastic components 6 are distributed at intervals left and right. Each elastic component 6 includes a spring 16 and two screws, which are respectively called the first screw 17 and the second screw 18. The first screw 17 is installed at the top of the mounting bracket 4 and extends into the mounting groove 5, and the second screw 18 is installed on the foot pedal 3 and extends into the mounting groove 5. The spring 16 is located in the mounting groove 5 and sleeved on the first screw 17 and the second screw 18. The upper and lower ends of the spring 16 are respectively in contact connection with the top of the mounting bracket 4 and the foot pedal 3.

[0029] In this embodiment, both screws are hexagon socket head cap screws.

[0030] In this embodiment, during installation, the rotating blocks 9 and the trigger plates 2 of the two rotary positioning components 7 are installed on the foot pedal 3, wherein the installation direction of the rotary positioning component 7 matches the rotation direction of the foot pedal 3. Then, two hexagon socket head cap screws are screwed on both the foot pedal 3 and the mounting bracket 4. Then, a spring 16 is sleeved on each of the two hexagon socket head cap screws on the mounting bracket 4. At the same time, the assembled foot pedal 3 is slid through the mounting groove 5 of the mounting bracket 4, so that the other ends of the two springs 16 are sleeved on the two hexagon socket head cap screws on the foot pedal 3, and the rotary positioning component 7 and the mounting bracket 4 are fixed. Finally, the micro switch 1 is fixed on the mounting bracket 4 in the correct direction through the fastener 19, and the position of the micro switch 1 can be adjusted back and forth to make it in good contact with the trigger plate 2.

Claims

1. A foot pedal device for an X-ray imaging flat bed, comprising a micro switch, a trigger plate and a foot pedal, wherein the trigger plate and the micro switch are both located below the foot pedal, and the trigger plate is fixed to the foot pedal and is used to contact the micro switch to close it when driven by the foot pedal, characterized in that It also includes a mounting frame and a rotation positioning mechanism, the mounting frame is provided with a mounting groove running through the front and back, the trigger plate is inserted into the mounting groove in a horizontal direction from front to back, and is connected to the top of the mounting frame through a plurality of elastic components, the rotation positioning mechanism is located below the foot pedal, the rotation positioning mechanism and the micro switch are respectively located in the mounting groove and are installed at the bottom of the mounting frame, the foot pedal is installed on the rotation positioning mechanism and can rotate when subjected to force, when the foot pedal is rotated to a preset angle, the foot pedal will be blocked by the rotation positioning mechanism and cannot continue to rotate, at which time the trigger plate contacts the micro switch to close it.

2. The footrest device of the X-ray imaging flat bed according to claim 1, characterized in that The rotation positioning mechanism includes two rotation positioning components, which are distributed on the left and right sides of the micro switch, and each of the rotation positioning components includes a fixed block, a rotating block, a rotating shaft and a limit rod. The fixed block and the rotating block are distributed on the left and right sides, and the fixed block is fixed to the bottom of the mounting frame. The rotating shaft and the limit rod both pass through the fixed block and the rotating block. The limit rod is fixed to the fixed block, and the rotating shaft is fixed to the rotating block. A limit hole is provided on the rotating block, and the limit rod passes through the limit hole. The limit hole is used to match the limit rod, so that the rotating block is blocked and cannot continue to rotate after the rotating shaft rotates relative to the fixed block by a preset angle; the foot pedal is fixedly connected to the rotating blocks of the two rotation positioning components.

3. The footrest device of the X-ray imaging flat bed according to claim 2, characterized in that The limiting hole is a vertically elongated circular hole.

4. The footrest device of the X-ray imaging flat bed according to claim 2, characterized in that The limiting rod is fixed to the fixed block through a fastening nut, a washer is arranged inside the rotating block, the rotating shaft passes through the washer, and is fixed to the rotating block through an axial elastic retaining ring.

5. The footrest device of the X-ray imaging flat bed according to claim 2, characterized in that The limiting rod is realized by an axial screw.

6. The footrest device of the X-ray imaging flat bed according to claim 1, characterized in that There are two elastic components, which are spaced apart from each other on the left and right. Each elastic component includes a spring and two screws, which are respectively called the first screw and the second screw. The first screw is installed on the top of the mounting frame and extends into the mounting groove. The second screw is installed on the foot pedal and extends into the mounting groove. The spring is located in the mounting groove and is sleeved on the first screw and the second screw. The upper and lower ends of the spring are respectively in contact with and connected to the top of the mounting frame and the foot pedal.

7. The footrest device of the X-ray imaging flat bed according to claim 6, characterized in that Both screws are hexagon socket head screws.

Images