JP3184939U - X-ray equipment - Google Patents

Abstract

To provide an X-ray imaging apparatus capable of switching the vertical movement of an image receiving unit to electric or manual depending on the situation of the place.
An apparatus main body and a counter balance that supports the apparatus main body in a vertically movable manner by connecting the apparatus main body to one end of a first transmission means 11 wound around a first rotating body 10 and connecting a counter weight 12 to the other end. The mechanism, the driven rotary body 15, the drive rotary body 16, and the rotary bodies are coupled together, and the apparatus main body is locked, and the second transmission means 14, the clutch 18 and the first motor 19 are moved vertically according to the rotation of the rotary bodies. A drive unit, a grip bar that moves up and down in conjunction with the vertical movement of the apparatus main body, and a control unit, and connects the first motor and the clutch or releases the connection, It can be moved up and down manually, and when the distance between the main unit and the grip bar is different from the preset distance, the grip bar can be moved to secure the set distance.
[Selection] Figure 8

Description

  The present invention relates to an X-ray imaging apparatus that captures the inside of a human body using X-rays. More specifically, the present invention captures an interior of a human body in a standing X-ray imaging apparatus that captures an image with a subject standing. The present invention relates to an X-ray imaging apparatus in which an image receiving unit can be moved up and down either electrically or manually, and a grip bar can be moved up and down in conjunction with the vertical movement of the image receiving unit or independently.

  Conventionally, an X-ray imaging apparatus that images an inside of a human body using X-rays has been widely used in the medical field, and the X-ray imaging apparatus includes a standing type that captures an image of a subject as a subject. There is.

  Here, a standing X-ray imaging apparatus will be described with reference to the drawings. FIG. 17 is a diagram showing a conventional standing X-ray imaging apparatus, in which 51 is an X-ray imaging apparatus. is there.

  The standing X-ray imaging apparatus includes an image receiving unit 52. The image receiving unit 52 is supported by the support column 53 and is movable up and down along the support column 53. Inside, a cassette containing a film for photographing, a light receiving body containing an image sensor, and the like are detachably accommodated.

  Here, as a method of moving the image receiving unit 52 up and down, there are a method of moving the image receiving unit 52 up and down electrically using a motor and a method of moving the image receiving unit 52 up and down manually by a counter balance mechanism. FIG. 17 shows a vertical X-ray imaging apparatus that manually moves the image receiving section 52 up and down.

  In the X-ray imaging apparatus 51 that moves the image receiving unit 52 up and down manually, the image receiving unit 52 is connected to one end of the wire wound around the pulley in the support column 53, and the other end of the wire is connected to the other end of the wire. A counterweight that moves in the direction opposite to the moving direction of the image receiving unit 52 in conjunction with the movement of the image receiving unit 52 is connected, and the image receiving unit 52 is supported in balance with the counterweight, whereby the image receiving unit 52 is manually moved up and down. It is free to move.

  In general, in the X-ray imaging apparatus 51 that manually moves the image receiving unit 52 up and down, a grip bar 54 that the subject grips for safety when imaging the subject from the side faces upward toward the image receiving unit 52. Therefore, the grip bar 54 moves up and down as the image receiving unit 52 moves up and down.

  On the other hand, in the system in which the image receiving unit is moved up and down electrically, for example, a pair of sprockets arranged in the vertical direction are connected by a chain, and the image receiving unit is supported by the chain. By rotating, the chain is moved so that the image receiving portion can be moved up and down.

  In addition, the X-ray imaging apparatus that moves the image receiving unit up and down electrically has an electric grip bar separately from the image receiving unit, and the electric grip bar detects the vertical movement of the image receiving unit together with the image receiving unit. It can be moved up and down electrically, and can be moved up and down independently from the up and down movement of the image receiving section.

JP 2005-328931 A

  As described above, there are electric and manual methods for moving the image receiving unit up and down in the X-ray imaging apparatus. In the case of electric driving, there is an advantage that labor is not required, but the speed of movement is required to ensure safety. Therefore, for example, when the image receiving unit is at the bottom, it takes time to move the image receiving unit to the top, and it can be pointed out that the work efficiency is deteriorated.

  In this regard, in the method of manually moving the image receiving unit up and down, the image receiving unit can be moved quickly with the intention of the operator, but there is a problem that labor is required.

  Therefore, the present invention makes it possible to move the image receiving unit up and down either electrically or manually, thereby enabling the vertical movement of the image receiving unit to be switched to electric or manual depending on the situation on the spot. An object is to provide an X-ray imaging apparatus.

The X-ray imaging apparatus of the present invention is
An apparatus main body including an image receiving unit that images the inside of the subject by visualizing X-rays transmitted through the subject;
The apparatus main body is connected to one end of the first transmission means wound around the first rotating body, and a counterweight is connected to the other end of the first transmission means to balance the counterweight. A counter balance mechanism that supports the main body to move up and down;
An apparatus main body is connected to the driven side rotating body, the driving side rotating body, the driven side rotating body and the driving side rotating body, and the apparatus main body is locked, and according to the rotation of the driven side rotating body and the driving side rotating body. And a second transmission means that moves in the vertical direction, a clutch to which the drive-side rotating body is coupled, and a drive source to which the clutch is coupled,
A gripping rod that is electrically moved in the same direction as the movement direction of the device body;
A grip bar drive for moving the grip bar;
A control unit for controlling the operation of at least the drive source, the clutch, and the grip rod drive unit;
A movement detection sensor A that detects movement in the vertical direction of the apparatus main body and a movement detection sensor B that detects movement in the vertical direction of the grip bar, connected to the control unit,
By transmitting the rotational force of the image receiving unit drive source to the drive side rotating body via a clutch, the apparatus main body can be moved up and down electrically.
By blocking the transmission of the rotational force to the drive side rotating body of the image receiving unit drive source, the device main body can be moved up and down manually,
The grip bar can move up and down in conjunction with the vertical movement of the apparatus body when the apparatus body moves up and down, or can move up and down independently of the vertical movement of the apparatus body,
When the apparatus main body is manually moved up and down and the distance between the apparatus main body and the grip bar is different from a preset distance, the apparatus main body and the grip bar are stopped after stopping the vertical movement of the apparatus main body. The grip rod is moved up and down until the distance between them reaches a preset distance.

  In the X-ray imaging apparatus of the present invention, the apparatus main body having the image receiving unit is supported by the counterbalance mechanism so as to be movable up and down, and the second transmission means moves by transmitting the rotational force of the drive source via the clutch. The device main body is locked, and with this configuration, the rotational force of the drive source is transmitted to the second transmission means to electrically move the device main body up and down, and the transmission of the rotational force of the drive source is interrupted by the clutch. Therefore, it is possible to manually move the apparatus main body up and down.

  Therefore, if it is desired to move the apparatus main body quickly, the apparatus main body can be moved manually. On the other hand, if it is not necessary to move the apparatus main body quickly, the apparatus main body is moved electrically. Therefore, it is possible to switch the vertical movement of the image receiving unit to electric or manual depending on the situation on the spot.

  The present invention also has a grip bar that can be moved up and down in the same direction as the movement direction of the device body. The grip bar is moved up and down in conjunction with the vertical movement of the device body when the device body moves up and down. Because it can be moved or moved up and down independently of the vertical movement of the main body of the device, the position of the grip bar can be freely adjusted, and it can be adapted to the height of the subject without moving the grip bar up and down. By simply moving the apparatus main body up and down as described above, the grip rod can be moved up and down electrically in conjunction with the vertical movement of the apparatus main body.

  Further, the present invention includes a movement detection sensor A for detecting the movement of the apparatus main body in the vertical direction and a movement detection sensor B for detecting the movement of the grip bar in the vertical direction. Connected to the control unit so that the control unit can grasp the movement distance of the device main body and the movement distance of the grip bar, and when the device main body is manually moved up and down, the distance between the device main body and the grip bar is set in advance. When the distance between the device main body and the gripping rod becomes a preset distance even after the device main body is moving up or down or when the vertical movement is stopped, the gripping rod is moved up and down. It is possible to maintain the distance between the main body and the gripping rod, and resetting is unnecessary.

  That is, as described above, in the X-ray imaging apparatus 51 that moves the image receiving unit 52 up and down manually, the grip bar is attached above the image receiving unit, and the distance between the image receiving unit and the grip bar is constant. Since the X-ray imaging apparatus that moves the image receiving unit up and down electrically has an electric grip bar separately from the image receiving unit, the distance between the image receiving unit and the holding bar is set in advance before moving the image receiving unit up and down. When the image receiving unit is moved up and down after setting, the electric gripper detects the vertical movement of the image receiving unit and moves up and down with the image receiving unit while maintaining the distance from the image receiving unit.

  However, in the present invention, the apparatus main body can be moved up and down either electrically or manually, and the grip bar is also moved up and down in conjunction with the vertical movement of the apparatus main body. The handlebars are also moved up and down electrically when moving the device up and down.However, in general, when you want to move the device body up and down quickly, the device body is often moved manually. When moving, the moving speed of the apparatus main body may exceed the moving speed of the grip bar. In that case, since the distance between the device main body and the grip rod changes, after stopping the vertical motion of the device main body, only the grip rod is moved up and down, and the distance between the device main body and the grip rod is increased. The distance must be adjusted and set again.

  However, according to the present invention, when the distance between the apparatus main body and the grip bar is different from the preset distance when the apparatus main body is manually moved up and down, the apparatus main body is gripped with the apparatus main body after the vertical movement of the apparatus main body is stopped. Since the grip bars are moved up and down until the distance between the bars reaches a preset distance, it is not necessary to set the distance between the apparatus main body and the grip bars again.

It is a perspective view of the Example of the X-ray imaging apparatus of this invention. It is the figure which looked at the Example of the X-ray imaging apparatus of this invention from the back. It is the figure which looked at the Example of the X-ray imaging apparatus of this invention from the upper surface. It is a figure for demonstrating the apparatus main body in the Example of the X-ray imaging apparatus of this invention. It is a figure for demonstrating the mechanism which drives the apparatus main body in the Example of the X-ray imaging apparatus of this invention, and is the figure which showed the structure in a support | pillar from the plane side. It is a figure for demonstrating the mechanism which drives the apparatus main body in the Example of the X-ray imaging apparatus of this invention, and is the figure which showed the structure in a support | pillar from the front side. It is a figure which shows the AA sectional view structure in FIG. It is a figure which shows the BB sectional structure in FIG. It is a figure which shows the CC sectional view structure in FIG. It is a figure for demonstrating the mechanism which drives the grip stick in the Example of the X-ray imaging apparatus of this invention. It is a figure for demonstrating the grip stick in the Example of the X-ray imaging apparatus of this invention. It is a figure for demonstrating the grip stick in the Example of the X-ray imaging apparatus of this invention. It is a block diagram for demonstrating the control system in the Example of the X-ray imaging apparatus of this invention. It is a block diagram for demonstrating the control system in the Example of the X-ray imaging apparatus of this invention. It is a flowchart for demonstrating the effect | action of the Example of the X-ray imaging apparatus of this invention, and the case where the apparatus main body is moved up and down electrically is shown. It is a flowchart for demonstrating the effect | action of the Example of the X-ray imaging apparatus of this invention, and the case where the apparatus main body is moved up and down manually is shown. It is a figure for demonstrating the conventional standing type X-ray imaging apparatus.

  The X-ray imaging apparatus of the present invention has an apparatus main body, and the apparatus main body accommodates a photoreceiver such as a cassette containing an imaging film that is sensitive to X-rays and an image sensor, and accommodates the photoconductor. An image receiving unit that captures an image of the inside of the subject by visualizing X-rays that have passed through the subject using the film or the imaging element.

  And this apparatus main body is supported by the support | pillar so that it can move up and down by the counter balance mechanism. That is, in the X-ray imaging apparatus of the present invention, the apparatus body is connected to one end of the first transmission means wound around the first rotating body in the column, and the counter weight is connected to the other end of the first transmission means. It is connected. Thus, the apparatus main body is supported by the support so as to be movable up and down while balancing with the counterweight.

  Further, the X-ray imaging apparatus of the present invention has an image receiving unit driving unit, and the image receiving unit driving unit includes a driven side rotating body, a driving side rotating body, a driven side rotating body, and a driving side rotating body. And the second transmission means moves in the vertical direction together with the apparatus main body according to the rotation of the driven side rotating body and the driving side rotating body. I am going to do that.

  The image receiving unit drive unit includes a motor as a drive source and a clutch coupled to the motor. The clutch is coupled to the drive side rotating body. At least the operation of the motor and the clutch is performed by a microcomputer or the like. It is controlled by the control unit.

  Furthermore, the X-ray imaging apparatus of the present invention has a grip bar for the subject to grip particularly when photographing the side of the subject, and this grip bar is driven by a grip bar drive unit controlled by the control unit. In the same direction as the movement direction of the apparatus main body, that is, in the vertical direction, it can be moved electrically.

  And by driving a motor in the state which connected the motor and the drive side rotation body with the clutch, the rotational force of a motor is transmitted to a drive side rotation body via a clutch, and, thereby, a 2nd transmission means is moved. At the same time, the apparatus main body locked to the second transmission means can be moved up and down.

  Further, the transmission of the rotational force of the motor to the driving side rotating body is interrupted by the clutch, whereby the movement of the second transmission means becomes free, thereby enabling the apparatus main body to move up and down manually.

  The X-ray imaging apparatus of the present invention further includes a movement detection sensor A for detecting the movement of the apparatus body in the vertical direction and a movement detection sensor B for detecting the movement of the grip bar in the vertical direction. A detection sensor is connected to the control unit, so that the grip bar can be moved up and down independently of the vertical movement of the main body of the device, and in conjunction with the vertical movement of the main body of the device when the main body moves up and down. Can be moved up and down.

  Furthermore, when the distance between the apparatus main body and the grip bar is different from a preset distance when the apparatus main body is manually moved up and down, the vertical movement of the apparatus main body is stopped, and then the distance between the apparatus main body and the grip bar is increased. The grip rod is moved up and down until the distance reaches a preset distance. When the device main body is manually moved up and down, the movement speed of the device main body exceeds the movement speed of the grip rod, and the device main body Even if the distance between the grip bars differs from the preset distance, it is unnecessary to set the distance between the apparatus main body and the grip bars again.

  Here, it is preferable to provide a torque limiter on one of the driving side rotating body or the driving side rotating body, and to connect a clutch to the torque limiter, so that the apparatus main body is moved up and down electrically. When the main body comes into contact with something and an overload is applied to the torque limiter, it is possible to prevent accidents and the like by preventing the device body from moving up and down by idling the clutch side, By adjusting the frictional force setting of the torque limiter and clutch, it becomes possible to idle the motor with any arbitrary load.

  In addition, the apparatus main body is configured to include an image receiving unit for accommodating a photoreceptor such as a cassette and an imaging element for accommodating a film for photographing, a control box in which the control unit is accommodated, and a lift. The lift may be coupled to one end of the first transmission means and the lift may be locked to the second transmission means.

  Furthermore, the grip rod drive unit includes an operation plate to which the grip rod is attached, a ball screw to which the operation plate is screwed, and a second motor for driving the grip rod, and the ball screw is mounted on the shaft of the second motor. It is good to comprise, and by this, by driving a 2nd motor, while making an operation plate reciprocate along a ball screw, a grip rod can be made movable.

  An embodiment of the X-ray imaging apparatus according to the present invention will be described with reference to the drawings. FIGS. 1 to 3 are views showing an external appearance of the X-ray imaging apparatus according to the present embodiment, and FIG. 2 is a rear perspective view, and FIG. 3 is a top view.

  In the figure, reference numeral 1 denotes the X-ray imaging apparatus of the present embodiment. The X-ray imaging apparatus 1 of the present embodiment has a column 8 and an apparatus main body 2 supported by the column 8 so as to be movable in the vertical direction. The support column 8 is configured by covering the surface of a vertically long box-shaped casing with a cover, and two guides 801 are formed on the front side in the vertical direction.

  Here, the apparatus main body will be described. In the figure, reference numeral 2 denotes an apparatus main body. In the present embodiment, the apparatus main body 2 has an image receiving portion. That is, in the figure, reference numeral 3 denotes an image receiving portion. In this embodiment, the image receiving portion 3 has a light receiving body insertion port 301 on its side surface, and photography that is exposed to X-rays through this light receiving body insertion port 301. A light receiving body such as a cassette for storing a film for use or an image sensor can be inserted and removed. Further, on both sides of the back surface, grips 302 are attached for safety by a patient or the like who is a subject at the time of photographing.

  A control box 4 is attached to the back side of the image receiving unit 3, and a control board having a microcomputer as a control unit for controlling the operation of the apparatus is accommodated in the control box 4.

  In the figure, 5 is a handle for supporting the apparatus main body 2 when the apparatus main body 2 is manually moved up and down, and 6 in FIG. 2 is a switch group used when the apparatus main body 2 is moved up and down. is there. In the present embodiment, as a switch used when the apparatus main body 2 is moved up and down, a brake release switch for releasing the brake when the apparatus main body 2 is manually moved up and down, and for raising the apparatus main body 2 electrically. The image receiving unit raising switch, and the image receiving unit lowering switch for lowering the apparatus main body 2 electrically are provided. In addition, in this embodiment, a grip rod raising switch for raising the grip rod independently, a grip rod lowering switch for lowering the grip rod independently, and a distance between the grip rod and the apparatus main body are set. A set switch, a manual switch, an auto switch, a main switch, and the like that are used at the time are provided. In this embodiment, these switches are operated by a touch panel (not shown).

  Next, FIG. 4 is a diagram showing an outline of the apparatus main body 2 from above, and in the figure, 7 is a lift. That is, in this embodiment, a lift 7 for supporting the apparatus main body 2 on the support column 8 is provided, and in this embodiment, the lift 7 is a mounting plate attached to the back side of the control box 4. 701, a movable plate 703 disposed inside the support column 8, and a connecting portion 702 that connects the mounting plate 701 and the movable plate 703. The connecting portion 702 is provided on the front surface of the support column 8. The two guides 801 formed in the vertical direction are penetrated.

  Here, the mechanism for supporting the apparatus main body 2 on the column 8 by the lift 7 will be described with reference to the drawings. FIGS. 5 to 9 are diagrams for explaining the internal structure of the column, and FIG. 8 is a diagram showing the inside of FIG. 8 from the upper surface side, FIG. 6 is a diagram showing the internal structure of the column from the front side, FIG. 7 is a diagram showing an outline of the structure taken along line AA in FIG. 6 is a diagram showing an outline of the structure taken along line BB in FIG. 6, and FIG. 9 is a view showing an outline of the structure taken along line CC in FIG.

  In the figure, reference numeral 802 denotes a casing of the support column 8. In this embodiment, the casing 802 is a vertically long box having an opening on the front side, and a counterweight is accommodated therein by a partition wall 803. A counterweight storage space 806 is formed. That is, the partition wall 803 has a front wall and left and right side walls, and the left and right side walls are joined to the rear wall of the housing 802, whereby a counter weight for accommodating a counterweight is stored inside the partition wall 803. A weight accommodating space 806 is formed.

  As is clear from FIG. 6, the height dimension of the partition wall 803 is shorter than the height dimension inside the casing 802, so that the upper end of the partition wall 803 and the ceiling portion of the casing 803 are separated from each other. A gap 804 is formed between them.

  And in the form which connects the right-and-left side wall of the said housing 803 to the upper part of the said partition 803, the rotating shaft 9 is rotatably attached, and the both ends vicinity of this rotating shaft 9 is respectively attached. A pulley 10 as a first rotating body is attached, and a wire 11 as a first transmission means is wound around each pulley 10.

  One end of the wire 11 wound around the pulley 10 is connected to a movable plate 703 constituting the lift 7 in the apparatus main body 2 via a connection fitting 23, and the other end of the wire 11 is The counterweight storage space 806 is connected to the counterweight 12. Thus, the apparatus main body 2 is supported by the wire 11 via the lift 7 so as to be movable up and down. That is, in the present embodiment, the apparatus main body 2 connected to one end of the wire 11 is connected by a counter balance mechanism including a pulley 10, a wire 11 wound around the pulley 10, and a counterweight 12 connected to the other end of the wire. While being balanced with the counterweight 12, it is supported so as to be movable up and down. Therefore, the handle 5 can manually lower the apparatus main body by applying a downward force to the apparatus main body 2, while the apparatus main body can be manually lifted by applying an upward force to the apparatus main body 2. Can be made.

  Next, 13 is a brake in the figure. That is, in this embodiment, the electromagnetic brake 13 is attached to the pulley 10. In this embodiment, the electromagnetic brake 13 is normally operated, and the operation is released by pressing the brake release switch described above. Therefore, when the device main body 2 is moved up and down, a downward or upward force may be applied to the device main body 2 by the handle 5 while pressing the brake release switch.

  In the above description, the case where the wire 11 is used as the first transmission means has been described. However, it is not always necessary to use the wire as the first transmission means, and other belts, chains, or the like may be used. Further, when a chain is used as the first transmission means, a sprocket may be used as the first rotating body.

  Next, reference numeral 14 in the figure denotes a chain used for electrically moving the apparatus main body 2 up and down. That is, the X-ray imaging apparatus 1 of the present embodiment has an image receiving portion drive section, and the apparatus main body 2 can be electrically moved up and down by this image receiving section drive portion.

  Here, the image receiving unit driving unit will be described. In the X-ray imaging apparatus 1 of the present embodiment, an upper sprocket 15 as a driven side rotating body is rotatably disposed on the front side upper portion of the partition wall 803, A lower sprocket 16 as a driving side rotating body is rotatably arranged at the bottom of the housing 802, and the upper sprocket 15 and the lower sprocket 16 are connected by an endless chain 14 as a second transmission means. By rotating the 15 and the lower sprocket 16, the chain 14 can be moved in the vertical direction. A connection fitting 17 is attached to one place of the chain 14, and the connection fitting 17 is connected to the movable plate 703.

  Therefore, in this embodiment, the movable plate 703 can be moved up and down by rotating the lower sprocket 16 and moving the chain 14 in the vertical direction. That is, the apparatus main body 2 can be moved up and down by moving the chain 14.

  In the present embodiment, the lower sprocket 16 is rotated by a first motor as a drive source, and thereby the apparatus main body 2 is moved up and down electrically by driving the first motor. I am going to do that.

  That is, in the present embodiment, a clutch 18 is connected to the lower sprocket 16, and this clutch 18 is connected to a first motor 19 for electrically moving the apparatus main body 2 up and down via the clutch 18. The rotation of the first motor 19 is transmitted to the lower sprocket 16, whereby the lower sprocket 16 is rotated to move the chain 14, and accordingly, the apparatus main body is connected to the chain 14 by the connecting bracket 17. 2 is going to rise or fall.

  In the present embodiment, the clutch 18 is a frictional force generated by bringing the disks connected to the input shaft connected to the first motor 19 side and the output shaft connected to the lower sprocket 16 side into contact with each other. This is a type of clutch that transmits power.

  In this embodiment, the lower sprocket 16 is provided with a torque limiter so that the movement of the apparatus main body 2 can be stopped when an overload is applied to the lower sprocket 16. That is, in FIG. 6 and FIG. 8, reference numeral 20 denotes a torque limiter. In this embodiment, the torque limiter 20 is disposed inside the lower sprocket 16 and is connected to the clutch 18. As a result, when the apparatus main body 2 is moved up and down electrically, when the apparatus main body 2 comes into contact with something and an overload is applied to the torque limiter 20, the clutch 18 is idled with respect to the torque limiter 20. Thus, it is possible to prevent an accident or the like by preventing the apparatus body from moving up and down.

  Therefore, in the X-ray imaging apparatus of the present embodiment, the first motor 19 can be idled with any arbitrary load by adjusting the frictional force setting of the torque limiter 20 and the clutch 18, and more effectively the accident. Can be prevented.

  Furthermore, in the X-ray imaging apparatus 1 of the present embodiment, when the control unit is controlled, when the first motor 19 is rotated forward or backward to press the up switch or the down switch that moves the apparatus body 2 up and down, The brake 13 is released so that when the apparatus main body 2 is moved up and down electrically, the brake 13 prevents the pulley from rotating and prevents the apparatus main body 2 from moving up and down. doing.

  Furthermore, in the X-ray imaging apparatus 1 of the present embodiment, the operation of the clutch 18 is controlled by the control unit. Usually, the clutch 18 and the first motor 19 are disconnected and manually operated. The apparatus main body 2 is easily moved up and down, and the clutch 18 is connected to the first motor 19 when the up switch or the down switch is pressed.

  That is, in a state where the clutch 18 and the first motor 19 are connected, the lower sprocket 16 cannot be rotated unless the first motor 19 is driven, so that the chain 14 is locked and manually operated. However, in this embodiment, since the connection between the clutch 18 and the first motor 19 is normally released and the chain 14 is in a free state, manual operation is difficult. The apparatus main body 2 can be moved up and down.

  In FIG. 7, 22 is a bearing. That is, in this embodiment, the front wall of the partition wall 803 is provided with a rectangular guide portion 805 projecting along the vertical direction at the center portion, and both sides of the guide portion 805 are sandwiched, A bearing 22 is attached to the movable plate 703 toward the partition wall 803 side.

  In addition, the left and right side walls of the partition wall 803 are respectively provided with angular guide portions 805 along the vertical direction, while the movable plate 703 is also bent left and right rearward, and the guide portion 805 has The bearing 22 is attached to the movable plate 703 so as to be in contact with the partition 803 side. Thereby, the vertical movement of the movable plate 703 is made smooth.

  Next, in FIGS. That is, the X-ray imaging apparatus 1 of the present embodiment has the grip bar 24, thereby ensuring the safety of the subject. That is, as described above, in the X-ray imaging apparatus 1 of the present embodiment, the grip 302 that the subject grips for safety is attached at the time of imaging, but the subject is safe when imaging the side of the subject. A grip bar 24 is provided for gripping. In the present embodiment, the grip bar 24 is electrically movable up and down in the same direction as the movement direction of the apparatus main body 2 by the grip bar drive unit, and the apparatus main body 2 moves up and down when the apparatus main body 2 moves up and down. 2 can be moved up and down in conjunction with the up and down movement of 2, or can be moved up and down regardless of the up and down movement of the apparatus body 2.

  Here, a description will be given of a grip rod drive unit for driving the grip rod 24. FIG. 10 is a partial cross-sectional view for explaining the grip rod drive unit. In FIG. Reference numeral 24 denotes a grip bar driven by a grip bar drive unit 25. In this embodiment, the grip rod drive unit 25 has a second motor 26 for driving the grip rod, and the second motor 26 has a rotation shaft in the same direction as the moving direction of the apparatus body 2. Is arranged in the casing 27 attached to the back surface of the support column 8.

  A ball screw 28 is concentrically connected to the rotation shaft of the second motor 26, and an operation plate 29 is screwed to the ball screw 28 via a bracket 2901. As a result, when the second motor 26 is driven to rotate the ball screw 28, the operation plate 29 is movable along the ball screw 28 in the same direction as the movement direction of the apparatus main body 2.

  On the other hand, a guide groove 2701 is formed in a vertical direction on one side surface of the casing 27, and an end of the operation plate 29 penetrates the side surface of the casing 27 via the guide groove 2701. It extends outside.

  A support arm 30 is connected to a portion of the operation plate 29 that extends to the outside of the casing 27, and the grip rod 24 is connected to the support arm 30. Accordingly, by driving the second motor 26 and rotating the ball screw 28, the grip rod 24 can be reciprocated in the vertical direction via the operation plate 29 and the support arm 30.

  The second motor 26 is controlled by a control unit, and the grip bar 24 can be moved up and down regardless of the vertical movement of the apparatus body 2 by pressing the grip bar up switch or the grip bar down switch. Yes.

  In FIGS. 1, 2, and 3, reference numeral 2902 denotes a spacer interposed between the support arm 30 and the operation plate 29. However, the spacer 2902 is not always necessary and may not be provided. In the present embodiment, the operation plate 29 is constructed by sandwiching one plate with a rubber plate, but it is not always necessary to have such a configuration.

  Here, the connection between the support arm 30 and the grip rod 24 will be described. FIG. 11 is a perspective view showing the grip rod connected to the support arm 30, and FIG. 12 shows the relationship between the support arm 30 and the grip rod. FIG. 2 is an exploded perspective view showing the disassembled state, in which the support arm 30 includes a support column 3001 connected to the operation plate 29 upward by a predetermined length, and a front end on the upper end of the support column 3001. And a support portion 3003 provided continuously toward the front side of the support column 8 at the front end of the horizontal portion 3002. On the other hand, the grip rod 24 is connected to a base portion 2401 rotatably mounted on the support portion 3003 and both ends of the base portion 2401 in a direction perpendicular to the longitudinal direction of the base portion 2401. A grip portion 2402 is provided, and by making the base portion 2401 rotatable, the grip portion 2402 can be released upward for safety and the like.

  That is, a locking plate 3004 protrudes upward from both ends of the support portion 3003, and cylindrical fitting protrusions 3005 protrude from the opposing sides of the locking plate 3004. It is installed. On the other hand, fitting holes 2404 into which the fitting protrusions 3005 are fitted are formed in both end portions of the base portion 2401 of the grip rod 24 in the axial direction, whereby the base portion 2401 of the grip rod 24 is The grip portion 2402 can be released upward by pivotally connecting the support portion 3003 and rotating the base portion 2401. In the drawing, 3006 is a stopper for preventing the grip portion 2402 from lowering downward, and 2403 is a stopper for preventing the grip rod 24 from falling backward. . However, the shape of the grip bar, the support arm, and the connecting method of the grip bar and the support arm are not particularly limited, and the grip bar may be directly connected to the operation plate 29.

  Next, reference numeral 31 in FIG. 6 denotes a movement detection sensor A for detecting the vertical movement of the apparatus body 2. That is, in the X-ray imaging apparatus 1 of the present embodiment, the upper sprocket 15 is provided with a movement detection sensor 31 that rotates in conjunction with the rotation of the upper sprocket 15, and the movement detection sensor 31 is controlled by a control unit. Accordingly, the control unit grasps the vertical movement of the apparatus main body 2 and controls the driving of the second motor 26 when the apparatus main body 2 is moving up and down. The grip bar 24 is moved up and down in conjunction with the movement.

  Therefore, in the X-ray imaging apparatus 1 of the present embodiment, when the apparatus main body moves up and down regardless of whether manually or electrically controlled by the control unit, the grip rod 24 is interlocked with the vertical movement of the apparatus main body 2. Therefore, the grip rod 24 can be moved up and down electrically only by moving the device body 2 up and down to fit the height of the subject without moving the grip rod 24 up and down. .

  Next, 32 in FIG. 10 is a movement detection sensor B for detecting the vertical movement of the grip bar 24. That is, in the X-ray imaging apparatus 1 of the present embodiment, a potentiometer 32 as a movement detection sensor B is provided in the casing 27, a wire 33 of the potentiometer 32 is connected to the operation plate 29, and the potentiometer 32 is further connected. The control unit is connected to the control unit so that the control unit can grasp the vertical movement of the grip bar 24.

  The control unit controls the drive of the second motor 26 when the apparatus main body 2 is moving up and down, and moves the grip rod 24 up and down in conjunction with the vertical movement of the apparatus main body 2. Even when the distance between the apparatus main body 2 and the grip bar 24 is grasped based on the movement distance of the apparatus main body 2 and the movement distance of the grip bar 24 and the apparatus main body 2 is manually moved up and down, the apparatus main body 2 and the grip rod 24 can be maintained.

  That is, in the present embodiment, a movement detection sensor A31 for detecting the vertical movement of the apparatus main body 2 is provided, and the apparatus main body 2 is moved when the apparatus main body 2 is moving regardless of whether it is manual or electric. In conjunction with this, the grip rod 24 is also moved electrically. At this time, when the device main body 2 is moved up and down electrically, the device main body 2 and the grip rod 24 are moved at the same speed to grip the device main body 2. The device body 2 and the grip rod 24 can be moved while maintaining the distance from the rod 24. However, when the device body 2 is moved manually, the movement speed of the grip rod 24 is constant. Since the movement speed of the apparatus main body 2 is not constant, the distance between the apparatus main body 2 and the grip rod 24 varies depending on the movement speed of the apparatus main body 2.

  Considering the reason why the apparatus main body 2 is manually moved up and down, for example, the apparatus main body 2 is positioned on the lower side or the upper side of the support column 8 for some reason. It is considered that the device main body 2 is often manually moved up and down in the case of desire, but in such a case, since the device main body 2 needs to be moved up and down quickly, the movement speed of the device main body 2 is increased. Therefore, it is sufficiently conceivable that the moving speed of the apparatus main body 2 exceeds the moving speed of the grip bar 24.

  Then, in the process of moving the apparatus main body 2 up and down at a rapid speed, there may be a situation in which the distance between the apparatus main body 2 and the gripping rod 24 changes. The distance between the gripping rod 24 must be set again, and the user will not be able to bear the annoyance.

  Therefore, in the X-ray imaging apparatus 1 of the present embodiment, when the apparatus body 2 is manually moved up and down, the distance between the apparatus body 2 and the grip rod 24 is different from a preset distance. Is moved to a desired position, and the manual movement of the device main body 2 is stopped, and then the grip rod 24 is moved up and down until the distance between the device main body 2 and the grip rod 24 reaches a preset distance. Thus, it is unnecessary to set the distance between the apparatus main body 2 and the grip rod 24 again.

  That is, for example, when the apparatus main body 2 is raised manually, the speed at which the apparatus main body 2 is raised exceeds the rising speed of the grip rod 24, so that the distance between the apparatus main body 2 and the grip rod 24 is initially increased. In the X-ray imaging apparatus 1 according to the present embodiment, when the apparatus body 2 rises to a desired position, and the lift of the apparatus body 2 is thereby stopped, the grip rod 24 is raised. Does not stop, the grip rod 24 continues to rise until the distance between the apparatus main body 2 and the grip bar 24 is the same as the initial distance, and the distance between the apparatus main body 2 and the grip bar 24 is the initial distance. The grip rod 24 is stopped when the distance becomes the same as the distance between the main body 2 and the grip rod 24.

  Next, the control system in this embodiment will be described. FIGS. 13 and 14 are block diagrams for explaining the control system in the X-ray imaging apparatus of this embodiment, and FIG. 13 is for moving the apparatus main body 2 up and down. FIG. 14 shows a control system for moving the grip rod 24 up and down. That is, the X-ray imaging apparatus 1 of the present embodiment has two microcomputers as control units, both of which are provided with an inverter function, and the microcomputer A21a controls the vertical movement of the apparatus main body 2, and the microcomputer The vertical movement of the grip rod 24 is controlled by B21b.

  Then, as shown in FIG. 13, the microcomputer A 21 a operates the electromagnetic brake 13 for stopping the rotation of the pulley 10, the clutch 18 for driving the lower sprocket 16, the first motor 19, and the electromagnetic brake 13. A brake release switch 6a for releasing, an image receiving unit raising switch 6b for moving the apparatus main body 2 up and down by driving the first motor 19 and rotating the lower sprocket 16 to move the chain 14 and lowering the image receiving unit A switch 6c, a power source, and a main switch are connected.

  As described above, the microcomputer A21a operates the electromagnetic brake 13 to prevent the pulley 10 from rotating in a normal time when no switch is pressed, and the clutch 18 and the first motor 19 are connected. Is released, the transmission of the rotational force of the first motor 19 to the lower sprocket 16 is cut off, thereby making the chain 14 free.

  When the ascending switch 6b or the descending switch 6c is pressed, the operation of the electromagnetic brake 13 is released to freely rotate the pulley 10 and the clutch 18 and the The first motor 19 is connected, and the rotation of the first motor 19 can be transmitted to the lower sprocket 16 via the clutch 18 so that the first motor 19 rotates forward or backward. If it does so, the chain 14 will move because the lower sprocket 16 rotates, and the apparatus main body 2 connected with the chain 14 can be moved up and down.

  Further, when the brake release switch 6a is pressed, the microcomputer A21a releases the operation of the electromagnetic brake 13 while the connection between the clutch 18 and the first motor 19 is released while the switch is being pressed. The pulley 10 can be freely rotated. Therefore, in this state, the apparatus body can be lowered or raised by grasping the handle 5 and applying a downward or upward force to the apparatus body 2.

  Therefore, in the X-ray imaging apparatus 1 of the present embodiment, the operator can switch the vertical movement of the apparatus main body to electric or manual according to his / her own intention according to the situation on the spot.

  Next, in the microcomputer B21b, the movement detection sensor A31 for detecting the vertical movement of the apparatus main body 2, the movement detection sensor B32 for detecting the vertical movement of the grip bar 24, and the grip bar 24 are moved up and down. The second motor 26, the grip rod raising switch 6d, the grip rod lowering switch 6e, the set switch 6f, the manual switch 6g, the auto switch 6h, the power source, and the main switch are connected. As described above, in the present embodiment, the grip bar raising switch 6d, the grip bar lowering switch 6e, the set switch 6f, the manual switch 6g, and the auto switch 6h are touch panels, and the touch panel is connected to the microcomputer B21b. . The set switch 6f, manual switch 6g, and auto switch 6h are used for setting the distance between the apparatus main body 2 and the grip bar 24. When the apparatus main body is moved up and down after the auto switch is pressed, the apparatus The main body and the grip bar move up and down while maintaining the distance between them, and after the manual switch is pressed, the apparatus main body and the grip bar move up and down independently without maintaining the distance between them.

  The microcomputer B21b moves the grip bar 24 up and down regardless of the vertical movement of the apparatus body 2 when the grip bar lift switch 6d or the grip bar lowering switch 6e is pressed.

  Further, when the movement detection sensor A31 detects that the apparatus main body 2 is moving up and down, the microcomputer B32 controls the driving of the second motor 26 and interlocks with the vertical movement of the apparatus main body 2 so that the grip bar 24, and the distance between the apparatus main body 2 and the grip bar 24 based on the movement distance of the apparatus main body 2 and the movement distance of the grip bar 24 by signals from the movement detection sensor A31 and the movement detection sensor B32. Is calculated. When the distance between the apparatus main body 2 and the grip bar 24 is different from the preset distance, the vertical movement of the grip bar 24 does not stop even after the vertical movement of the apparatus body 2 is stopped, and the apparatus main body 2 and the grip bar The grip rod 24 is moved up and down until the distance between 24 reaches a preset distance, thereby eliminating the need for resetting between the apparatus main body 2 and the grip rod 24.

  Next, the operation of the X-ray imaging apparatus 1 of the present embodiment configured as described above will be described. When the X-ray imaging apparatus 1 of the present embodiment is used, first, between the apparatus main body 2 and the gripping rod 24. Is set (referred to as “distance setting”). In this embodiment, there are two methods for setting the distance: mode 1 and mode 2.

  First, in mode 1, after pressing the manual switch 6g, the apparatus body 2 and the grip bar 24 are moved up and down to determine the interval, and then the set switch 6f is pressed. Then, the distance between the apparatus main body 2 and the grip rod 24 is set, and then when the apparatus main body 2 is moved up and down after the auto switch 6h is pressed, the set distance (referred to as “set distance”) is maintained. The grip bar 24 moves up and down. In this case, after the manual switch 6g is depressed, the position of the grip bar 24 is moved, and even when the distance between the apparatus body 2 and the grip bar 24 is different from the set distance, the auto switch 6h is subsequently depressed. Then, the grip rod 24 moves until the distance between the apparatus main body 2 and the grip rod 24 returns to the set distance.

  Next, in mode 2, after pressing the manual switch 6g, the apparatus body 2 and the grip bar 24 are moved up and down to determine the interval, and then the auto switch 6h is pressed. Then, the distance between the apparatus main body 2 and the grip bar 24 is set, and when the apparatus main body 2 is moved up and down thereafter, the grip bar 24 moves up and down while maintaining the set distance (referred to as “set distance”). . In this case, unlike the mode 1 described above, the position of the grip bar 24 is moved after the manual switch 6g is pressed, and the distance between the apparatus body 2 and the grip bar 24 is changed to a distance different from the set distance. In this case, when the auto switch 6h is subsequently pressed, the apparatus main body 2 and the grip bar 24 move while maintaining the changed distance.

  Further, in the X-ray imaging apparatus 1 of the present embodiment, the grip rod 24 can be retracted upward. In this case, the retract position of the grip rod 24 is set in advance, and then the retract switch is set. By depressing (in the present embodiment, the manual switch is also used by long pressing), the grip rod 24 can be raised to the position set in advance and retracted.

  Next, the case where the apparatus main body 2 and the grip rod 24 are moved up and down after setting the distance in this way will be described. FIG. 15 is a flowchart for explaining the operation when the apparatus main body 2 is moved up and down electrically. In the state where the electromagnetic brake 13 is activated and the clutch 18 and the first motor 19 are disconnected (referred to as “initial state”), the up switch 6b or the down switch 6c is pressed in Step 1. The microcomputer A21a connects the clutch 18 and the first motor 19 in step 2 so that the rotation of the first motor 19 can be transmitted to the lower sprocket 16 via the clutch 18, and the electromagnetic brake 13 is activated in step 3. Is released to freely rotate the pulley 10, and the first motor 19 is rotated forward or backward in step 4.

  Then, in step 5, the lower sprocket 16 is rotated to move the chain 14, and the apparatus main body 2 connected to the chain 14 is raised or lowered.

  Next, when the movement detection sensor A31 detects the vertical movement of the apparatus main body 2 in step 6, the driving of the second motor 26 is controlled by the control of the microcomputer B21b. In step 7, the movement of the apparatus main body 2 is interlocked with the vertical movement. The grip bar 24 moves up and down.

  At this time, in step 8, the movement detection sensor B32 detects the vertical movement of the grip bar 24, and the microcomputer B21b detects the movement distance of the apparatus main body 2 and the grip bar 24 based on signals from the movement detection sensor A31 and the movement detection sensor B32. The distance between the apparatus main body 2 and the grip rod 24 is calculated based on the movement distance of, and in step 9, the grip rod 24 is moved up and down while maintaining the set distance.

  If any overload is applied to the torque limiter 20 while the apparatus main body 2 is moving up and down, the clutch 18 is idled in Step 10 and the vertical movement of the apparatus main body 2 is stopped. The movement detection sensor 31 detects the stop of the apparatus main body 2, and in step 12, the drive of the second motor 26 is controlled by the control of the microcomputer B21b to stop the grip rod 24. This state is continued until there is no overload. The

  When the press of the ascending switch 6b or the descending switch 6c is released while the apparatus main body 2 is moving up and down, the microcomputer A21a stops driving the first motor 19 in step 13, thereby causing the step 14 to In step 15, the movement detection sensor A31 detects the stop of the apparatus body 2, and in step 16, the driving of the second motor 26 is controlled by the control of the microcomputer B21b, so that the grip rod 24 is stopped. To do.

  Further, the microcomputer A21a receives the release of the depression of the ascending switch 6b or the descending switch 6c, and further operates the electromagnetic brake 13 in step 17 to prevent the pulley 10 from rotating. The connection of the motor 19 is released and the transmission of the rotational force of the first motor 19 to the lower sprocket 16 is cut off, thereby returning to the initial state. After that, when the retraction switch is pressed, in step 19, the grip rod 24 can be retreated to a preset position.

  Next, the operation of manually moving the apparatus main body 2 up and down will be described with reference to FIG. 16. In the same manner as described above, the electromagnetic brake 13 is in operation and the clutch 18 and the first motor 19 are disconnected. In this state, when the brake release switch 6a is pressed in step 31, the microcomputer A21a releases the operation of the electromagnetic brake 13 in step 32, and the pulley 10 can be freely rotated.

  Therefore, when the operator grasps the grip 5 while pressing the brake release switch 6a and applies a downward or upward force to the apparatus body 2, the apparatus body 2 moves up and down in step 33 and moves in step 34. The detection sensor A31 detects the vertical movement of the apparatus main body 2, and the driving of the second motor 26 is controlled by the control of the microcomputer B21b. In step 35, the grip rod 24 moves up and down in conjunction with the vertical movement of the apparatus main body 2. At the same time, in step 36, the movement detection sensor B32 detects the movement of the grip bar 24, and the detection information is transmitted to the microcomputer B21b.

  When some overload is applied to the torque limiter 20 while the apparatus main body 2 is moving up and down, the clutch 18 is idled in Step 37 and the vertical movement of the apparatus main body 2 is stopped. The movement detection sensor A31 detects the stop of the apparatus main body 2, and in step 39, the driving of the second motor 26 is controlled by the control of the microcomputer B21b to stop the grip rod 24. This state is continued until the overload is eliminated. The

  Further, when the operator releases the force applied to the apparatus main body 2, the vertical movement of the apparatus main body 2 stops, and when the depression of the brake release switch 6a is released, the microcomputer A21a activates the electromagnetic brake 13. As a result, the brake is actuated at step 40 to prevent the pulley 10 from rotating, the apparatus main body 2 is stopped at step 41, and the movement detection sensor A 31 detects the stop of the apparatus main body 2 at step 42.

  Then, the microcomputer B21b calculates the movement distance of both the apparatus body 2 and the grip bar 24 from the detection results of the movement detection sensor A31 and the movement detection sensor B32, and the distance between the apparatus body 2 and the grip bar 24 is the set distance. To determine whether the change has occurred.

  If the distance between the apparatus body 2 and the grip bar 24 has not changed with respect to the set distance, in step 43, the grip bar 24 stops and returns to the initial state, and then the retract switch is pressed. As a result, the grip bar 24 can be retracted to a preset position.

  On the other hand, when the distance between the apparatus main body 2 and the grip bar 24 changes with respect to the set distance, the microcomputer B21b controls the drive of the second motor 26, and in step 44, the apparatus main body 2 and the grip bar The grip rod 24 is moved up and down until the distance between the two contacts returns to the set distance. In step 45, the distance between the apparatus main body 2 and the grip rod 24 is returned to the set distance to secure the set distance. The operation moves to the stop operation of the grip bar 24.

  As described above, in the X-ray imaging apparatus of this embodiment, the apparatus main body is supported by the counter balance mechanism so as to be movable up and down, and the chain 14 that holds the apparatus main body 2 is stretched between the upper sprocket 15 and the lower sprocket 16. Since the clutch 18 connected to the first motor 19 is connected to the lower sprocket 16, the first motor 19 is driven by connecting the first motor 19 and the clutch 18. The device main body 2 can be moved up and down electrically by transmitting the rotational force to the chain 14, and the device main body 2 can be moved up and down manually by releasing the connection between the clutch 18 and the first motor 19. Is possible.

  Accordingly, when it is desired to move the apparatus main body 2 quickly, the apparatus main body 2 can be manually moved up and down. On the other hand, when it is not necessary to move the apparatus main body 2 quickly, the apparatus main body is electrically operated. 2 can be moved, and the vertical movement of the apparatus main body 2 can be switched to electric or manual depending on the situation of the place.

  In this embodiment, a friction clutch is used as a clutch for transmitting the rotation of the first motor 19 to the lower sprocket 16, and the lower sprocket 16 is provided with a torque limiter, and the torque limiter 20 is connected to the clutch 18. Therefore, when the device main body 2 comes into contact with something when the device main body 2 is moved up and down electrically and an overload is applied to the torque limiter 20, the clutch 18 is idled with respect to the torque limiter 20. Accidents and the like can be prevented in advance, and by adjusting the frictional force setting of the torque limiter 20 and the clutch 18, the first motor 19 can be idled with any arbitrary load. Accidents can be effectively prevented.

  Furthermore, the X-ray imaging apparatus of the present embodiment has a grip bar that can be moved up and down in the same direction as the movement direction of the apparatus main body, and the apparatus main body when the apparatus main body moves up and down. Since the vertical movement is made in conjunction with the vertical movement of the device, or the vertical movement of the apparatus main body is possible, the position of the grip bar can be freely moved by moving only the grip bar up and down. At the same time, the grip rod can be moved up and down electrically only by moving the apparatus main body up and down to match the height of the subject.

  At this time, the X-ray imaging apparatus of the present embodiment includes a movement detection sensor A for detecting the vertical movement of the apparatus body and a movement detection sensor B for detecting the vertical movement of the grip bar. These movement detection sensors A and B are connected to the control unit so that the control unit can grasp the movement distance of the apparatus main body and the movement distance of the grip bar so that the apparatus main body can be grasped when the apparatus main body is manually moved up and down. When the distance between the bars is different from the preset distance, after stopping the vertical movement of the apparatus body, the grip bars are moved up and down until the distance between the apparatus body and the grip bar reaches a preset distance. For this reason, the distance between the apparatus main body and the grip bar can be maintained, and resetting is unnecessary.

  In the above description, the lift 7 is attached to the control box 4, the attachment plate 701 is attached to the back side of the control box 4, the movable plate 703 is disposed inside the column 8, and the attachment plate The apparatus main body 2 is moved up and down by supporting the movable plate 703 inside the support column 8, but it is not always necessary to configure in this way. Any method may be used as long as the apparatus main body 2 can be moved up and down and supported by the support column 8.

  In the above description, the lower sprocket 16 is rotated by the first motor 19, but the upper sprocket 15 may be rotated by the first motor.

  Further, in the above description, the upper sprocket 15 is used as the driven side rotating body, and the lower sprocket 16 is used as the driving side rotating body, and the upper sprocket 15 and the lower sprocket 16 are connected by the endless chain 14. It is not always necessary to use a chain as the transmission means and a sprocket as the rotating body. Therefore, all long objects such as belts and wires can be used as the transmission means, and a pulley may be used as the rotating body.

  In the above description, the case where the wire 11 is used as the first transmission means constituting the counterbalance mechanism and the pulley is used as the first rotating body has been described. However, the wire 11 is used as the first transmission means, There is no need to use a pulley as the first rotating body, and a belt, a chain, or the like may be used as the first transmitting means. When a chain is used as the first transmitting means, a sprocket is used as the first rotating body. Also good.

  Further, the grip bar drive unit for driving the grip bar 24 is not necessarily configured as described above, and the grip bar is moved up and down in conjunction with the vertical movement of the apparatus body 2 or the apparatus body 2 is moved up and down. Any configuration may be used as long as the grip rod can be moved up and down regardless of the movement.

  The present invention enables a standing X-ray imaging apparatus to switch between manual vertical movement of the image receiving unit and electric vertical movement of the image receiving unit according to the situation at the site. Since the grip bar is movable in conjunction with the vertical movement of the image receiving unit or regardless of the vertical movement of the image receiving unit, the image receiving unit can move up and down and has a gripping bar. Applicable to all devices.

DESCRIPTION OF SYMBOLS 1 X-ray imaging apparatus 2 Apparatus main body 3 Image receiving part 301 Cassette insertion port 302 Grip 4 Control box 5 Handle 6 Switch 6a Brake release switch 6b Apparatus main body up switch 6c Apparatus main body down switch 6d Grip bar up switch 6e Grip bar down switch 7 Lift 701 Mounting plate 702 Connection portion 703 Movable plate 8 Column 801 Guide 802 Column housing 803 Partition 804 Clearance above partition 805 Guide portion 806 Counterweight receiving space 9 Rotating shaft 10 Pulley 11 Wire 12 Counterweight 13 Brake 14 Chain 15 Upper sprocket 16 Lower sprocket 17 Connecting bracket 18 Clutch 19 First motor 20 Torque limiter 21a Microcomputer A
21b Microcomputer B
22 Bearing 23 Connecting bracket 24 Grip rod 25 Grip rod drive unit 26 Second motor 27 Casing 2701 Guide groove 28 Ball screw 29 Actuating plate 2901 Bracket 30 Support arm 31 Movement detection sensor A
32 Movement detection sensor B (potentiometer)
33 Potentiometer wire

Claims (4)

An apparatus main body (2) including an image receiving unit that images the inside of the subject by visualizing X-rays transmitted through the subject;
The apparatus body (2) is connected to one end of the first transmission means (11) wound around the first rotating body (10), and the counterweight (12) is connected to the other end of the first transmission means (11). A counter balance mechanism that supports the apparatus body (2) so as to be movable up and down while balancing the counter weight (12),
The driven-side rotating body (15), the driving-side rotating body (16), the driven-side rotating body (15), and the driving-side rotating body (16) are coupled and the device main body (2) is locked. The drive-side rotating body (16) is connected to the second transmission means (14) that moves in the vertical direction together with the apparatus main body (2) according to the rotation of the driven-side rotating body (15) and the driving-side rotating body (16). An image receiving portion drive unit having a clutch (18) and a drive source (19) to which the clutch (18) is coupled;
A grip rod (24) that is electrically moved in the same direction as the movement direction of the device body (2);
A grip bar drive (25) for moving the grip bar (24);
Control units (21a, 21b) for controlling the operation of at least the drive source (19), the clutch (18) and the grip rod drive unit (25);
The movement detection sensor A (31) connected to the controller (21a, 21b) for detecting the vertical movement of the apparatus main body (2) and the vertical movement of the grip bar (24) are detected. And a movement detection sensor B (32) that performs,
By transmitting the rotational force of the image receiving portion drive source (19) to the drive side rotating body (16) via the clutch (18), the device main body (2) can be moved up and down electrically.
By interrupting the transmission of the rotational force to the drive side rotating body (16) of the image receiving portion drive source (19), the device main body (2) can be moved up and down manually.
The grip bar (24) can be moved up and down in conjunction with the vertical movement of the apparatus main body (2) when the apparatus main body (2) moves up and down, or regardless of the vertical movement of the apparatus main body (2). It can be moved up and down,
When the apparatus body (2) is manually moved up and down, the distance between the apparatus body (2) and the grip bar (24) differs from a preset distance. After stopping the movement, the X-ray imaging apparatus is characterized in that the grip bar (24) is moved up and down until the distance between the apparatus body (2) and the grip bar (24) reaches a preset distance.   A torque limiter (20) is provided in at least one of the driving side rotating body (16) and the driven side rotating body (15), and the torque limiter (20) is connected to the clutch (18). The X-ray imaging apparatus according to claim 1, wherein:   The apparatus main body (2) includes an image receiving part (3) for receiving a cassette such as a cassette for receiving a photographic film and a light receiving element such as an image pickup element, and a control box (4) for accommodating the control part (21). And a lift (7), wherein the lift (7) is connected to one end of the first transmission means (11) and is locked to the second transmission means (14). The X-ray imaging apparatus according to claim 1 or 2.   The grip rod drive unit (25) includes an operation plate (29) to which the grip rod (24) is attached, a ball screw (28) to which the operation plate (29) is screwed, and a second motor (26). The ball screw (28) is connected to the shaft of the second motor (26), and the second motor (26) is driven so that the operation plate (29) is connected to the ball screw (28). The X-ray imaging apparatus according to any one of claims 1 to 3, characterized in that the grip rod (24) is movable while reciprocating along the axis.

Images