JP3195172U - Lifting device for X-ray imaging equipment - Google Patents

Abstract

An elevating apparatus for an X-ray imaging apparatus capable of moving up and down movable parts such as a grip rod and an image receiving portion manually while suppressing cost without employing a complicated configuration. A spring member 2 is attached to a shaft member so as to be freely wound and unwound, a slider 5 is connected to a tip of the spring member, a support member is connected to the slider, and the slider is fixed at a desired position. The locking mechanism includes a locking latch 18 having a locking claw portion 19 that is rotatably attached to the slider, and a locking groove 15 that locks the locking claw portion. A plurality of racks 14 are provided, and the locking latch is biased in the direction in which the locking claw is locked in the locking groove, and rotates in the counter-biasing direction to engage with the locking groove. In a state where the locking pawl portion is unlocked and the locking pawl portion is locked in the locking groove, the slider is allowed to move in the direction in which the spring member is wound, and the spring member is extended. Movement to is blocked. [Selection] Figure 3

Description

  The present invention relates to an elevating device for elevating movable members such as a grip bar and an image receiving unit in an X-ray imaging apparatus that images the inside of a human body using X-rays, and more specifically, adopts a complicated configuration. The present invention relates to a lifting apparatus for an X-ray imaging apparatus that can move up and down movable members such as a grip bar and an image receiving section.

  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, the standing type X-ray imaging apparatus will be described with reference to the drawings. FIG. 8 is a diagram showing a conventional standing type 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.

  In addition, 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 or the like. FIG. 8 shows a vertical X-ray imaging apparatus that manually moves the image receiving unit 52 up and down.

  In the X-ray imaging apparatus 51 that manually moves the image receiving unit 52 up and down, the image receiving unit 52 is connected to one end of a wire wound around a pulley in a column 53, and the other end of the wire receives an image receiving unit. 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.

  In general, in the X-ray imaging apparatus, when the body is imaged from the side, the gripping rod 54 is provided to prevent the subject's hand from being photographed and to support the subject's body and ensure safety. The X-ray imaging apparatus 51 that is provided and manually moves the image receiving unit 52 up and down generally has a grip bar 54 attached to the image receiving unit 52 upward as shown in the figure. The grip bar 54 moves up and down as the image receiving unit 52 moves up and down.

Utility Model Registration No. 3184939

  By the way, as described above, in an X-ray imaging apparatus that manually moves the image receiving unit up and down, generally, a gripping rod is attached to the image receiving unit. It is common to employ a counterbalance mechanism as described above. However, in X-ray imaging devices, X-ray imaging of a subject is often performed with the gripping rod removed. If this happens, the counterbalance will be lost, so it will be necessary to adjust the counterweight again, and this will not be annoying.

  In this regard, in an X-ray imaging apparatus in which the image receiving unit is moved up and down electrically by a motor, the grip bar is also moved up and down by a motor different from the vertical movement of the image receiving unit. Although there is an advantage that no problem occurs, in this case, since a motor dedicated to the grip bar is required, there is a problem that the configuration becomes complicated and the cost increases.

  Accordingly, an object of the present invention is to provide an elevating apparatus for an X-ray imaging apparatus that can move up and down movable parts such as a grip bar and an image receiving unit manually while suppressing cost without adopting a complicated configuration. Yes.

The lifting device of the X-ray imaging apparatus of the present invention is
In an X-ray imaging apparatus, an elevating apparatus for an X-ray imaging apparatus that supports movable members such as a grip rod and an image receiving portion so as to be movable up and down,
A spring member attached to the shaft member so as to be freely wound and unwound, and biased in the winding direction;
A slider that is connected to the tip of the spring member so as to be movable in the winding and unwinding direction of the spring member;
A support member connected to the slider and supporting the movable member;
And a locking mechanism for fixing the slider at a desired position by making the position of the slider movable in a winding direction or a feeding direction of the spring member.

  The lifting device of the X-ray imaging apparatus according to the present invention supports the movable member such as the grip rod and the image receiving portion by the spring member so as to be movable up and down, so that the grip rod and the image receiving portion can be moved without using a complicated configuration. The member can be supported to move up and down.

  Therefore, for example, in an X-ray imaging apparatus that manually moves the image receiving unit up and down, when the grip bar is supported by the lifting device of the X-ray imaging apparatus of the present invention so as to be movable up and down, even when the grip bar is removed, While it is not necessary to adjust the counterweight that supports the image receiving unit, the grip rod can be easily supported in a vertically movable manner without increasing costs.

  Further, when not only the grip bar but also the image receiving unit are supported by the lifting device of the X-ray imaging apparatus of the present invention so as to be movable up and down, it is not necessary to use a counter balance mechanism, so that the cost can be significantly reduced. It becomes possible.

  Therefore, by using the elevating device of the X-ray imaging apparatus of the present invention, it is possible to manually support components such as the grip bar and the image receiving portion so as to be able to elevate and lower costs without adopting a complicated configuration. .

It is the front side perspective view of the X-ray imaging apparatus which attached the Example of the raising / lowering apparatus of the X-ray imaging apparatus of this invention. It is a back side perspective view of the X-ray imaging apparatus which attached the Example of the raising / lowering apparatus of the X-ray imaging apparatus of this invention. It is a figure for demonstrating the structure of the Example of the raising / lowering apparatus of the X-ray imaging apparatus of this invention. It is a figure for demonstrating the latching mechanism in the Example of the raising / lowering apparatus of the X-ray imaging apparatus of this invention. It is a figure for demonstrating the fall prevention metal fitting in the Example of the raising / lowering apparatus of the X-ray imaging apparatus of this invention. It is a figure for demonstrating the counter balance in the X-ray imaging apparatus which attached the Example of the raising / lowering apparatus of the X-ray imaging apparatus of this invention. It is a figure for demonstrating the counter balance in the X-ray imaging apparatus which attached the Example of the raising / lowering apparatus of the X-ray imaging apparatus of this invention. It is a figure for demonstrating the conventional X-ray imaging apparatus.

  The elevating device of the X-ray imaging apparatus of the present invention includes a spring member, which is attached to the shaft member so as to be capable of winding and unwinding, and further biased in the winding direction. .

  A slider is attached to the tip of the spring member, so that the slider can move in the winding and unwinding direction of the spring member in accordance with the winding or unwinding of the spring member.

  In addition, a support member is connected to the slider, and the support member is supported by a movable member such as an image receiving portion and a grip bar in use, so that the support member is supported by the support member according to the movement of the slider. The movable member is moved in the same direction as the moving direction of the slider.

  Further, the elevating device of the X-ray imaging apparatus of the present invention includes a locking mechanism for fixing the position of the slider at a desired position. By this locking mechanism, the slider can be wound in the winding direction of the spring member, Alternatively, it is movable in the feeding direction and fixed at a desired position.

  Here, the locking mechanism is pivotally attached to the slider and has a locking latch having a locking claw portion, and is elongated and locked by the locking claw portion of the locking latch. The locking latch is biased in the direction in which the locking claw is locked in the locking groove and rotated in the counter-biasing direction. When the locking claw portion is released from the locking groove, the slider moves in the direction in which the spring member is wound. Is allowed, and the movement in the direction in which the spring member is drawn out may be prevented, so that the slider can be moved in the winding direction of the spring member or in the feeding direction without adopting a complicated configuration. It can be moved freely and fixed at a desired position.

  At this time, the locking groove has a rack-side horizontal portion formed in a direction perpendicular to the longitudinal direction of the rack from the side surface of the rack, and a rack-side taper formed in an oblique direction from the innermost portion of the horizontal portion. On the other hand, the latching claw portion may be composed of a claw side horizontal portion that abuts against the rack side horizontal portion and a claw side taper portion that abuts the rack side taper portion, thereby using a complicated mechanism. In the state where the locking claw is locked in the locking groove, the movement of the slider in the direction in which the spring member is wound is allowed, while the movement of the slider in the direction in which the spring member is drawn out is not allowed. It is supposed to be blocked.

  In addition, the slider is connected to the tip of the spring member via a fall prevention metal fitting, and when the spring member is cut for some reason, the latch for locking the latch claw portion with respect to the engagement groove by the fall prevention metal fitting. It is preferable to prevent the locking of the rotating member from rotating in the releasing direction, and thus it is possible to prevent the movable member from dropping suddenly and causing an unexpected situation.

  In addition, the movable member may be an image receiving portion or a gripping rod, which eliminates the need to adjust the counterweight when the gripping rod is removed.

  An embodiment of a lifting device (hereinafter simply referred to as “lifting device”) of an X-ray imaging apparatus according to the present invention will be described with reference to the drawings. FIGS. 1 and 2 are attached to the lifting device of this embodiment. FIG. 1 is an external view of an X-ray imaging apparatus, FIG. 1 is a front perspective view, FIG. 2 is a rear perspective view, and 31 is an X-ray imaging apparatus.

  In the figure, an X-ray imaging apparatus 31 to which the lifting device of this embodiment is attached is an X-ray imaging device that manually moves the image receiving unit up and down, and the gripping rod can be moved up and down by the lifting device of this embodiment. It is in a supported form.

  Here, the outline of the X-ray imaging apparatus 31 will be described. The X-ray imaging apparatus 31 includes a support column 32 and an apparatus main body 34 supported by the support column 32 so as to be movable in the vertical direction. The support column 32 is configured by covering the surface of a vertically long box-shaped casing with a cover, and two guides 33 are formed on the front side in the vertical direction.

  The apparatus main body 34 has an image receiving unit. That is, in the figure, reference numeral 35 denotes an image receiving portion, and in this embodiment, the image receiving portion 35 has a light receiving member insertion port 36 on the side surface, and the film for photography that is exposed to X-rays through the light receiving member insertion port 36. A light receiving body such as a cassette or an image pickup device can be inserted and removed. Further, on both sides of the back surface of the image receiving unit 35, grips 37 that are gripped for safety by a patient or the like who is a subject at the time of photographing are attached.

  A control box 38 is attached to the back side of the image receiving unit 35, and a control board for controlling the operation of the apparatus is accommodated in the control box 38 (see FIG. 6).

  Next, the mechanism for moving the apparatus main body 34 up and down will be described. FIG. 6 is a diagram showing an outline of the apparatus main body 34 from the top, and FIG. 7 shows the inside of the support column 32 from the side. FIG. 2 is a cross-sectional view, in which the apparatus main body 34 is supported by a lift 40. That is, in this embodiment, the lift 40 includes a mounting plate 41 attached to the back side of the control box 38, a movable plate 42 disposed inside the support column 32, and the mounting plate 41 and the movable plate 42. The connecting portion 43 has a connecting portion 43 to be connected, and the connecting portion 43 passes through the two guides 33 formed on the front surface of the support column 32 in the vertical direction.

  On the other hand, the inside of the column 32 is divided into a front side and a back side by a partition wall 48, and a rotating shaft 49 is freely rotatable in a form in which the left and right side walls of the column 32 are connected to the upper part of the partition wall 48. Pulleys 44 are attached in the vicinity of both ends of the rotating shaft 9.

  The lift 40 is supported by one end of a wire 45 wound around the pulley 44 via a connecting fitting 47 on the front side of the partition wall 48, and the other end of the wire 45 has a partition wall A counterweight 46 is supported on the back surface side of 48, so that the apparatus main body 34 connected to one end of the wire 45 via the lift 40 is supported in a vertically movable manner while balancing with the counterweight 46. Has been. That is, the apparatus main body 34 is supported by a counterbalance mechanism so as to be movable up and down, and is an X-ray imaging apparatus that manually moves the apparatus main body 34 up and down.

  Since a mechanism that supports the image receiving portion so as to be movable up and down by the counter balance mechanism is well known, detailed description thereof is omitted. In FIG. 6, reference numeral 39 denotes a handle. That is, the apparatus main body 34 is provided with a handle 39 for supporting the apparatus main body 2 when the apparatus main body 34 is moved up and down. When the apparatus main body 34 is moved up and down, a brake release switch (not shown) is pushed. While holding the handle 39, the device body 34 is pushed upward or downward.

  Further, as a method of supporting the apparatus main body so as to be movable up and down, it is not always necessary to employ a counter balance mechanism, and any method may be adopted as long as it can support the apparatus main body so as to be movable up and down. Therefore, for example, using a balancer device such as a spring balancer, the other end of the wire is connected to this balancer device, and the balance between the balancer device and the device body spring is achieved via the wire, allowing the device body to move up and down. You may support. At that time, as the arrangement position of the balancer device, for example, the balancer device may be arranged at the above-described counterweight arrangement position, or the balancer device is arranged at the position of the pulley so that the pulley is not used. Alternatively, the balancer device may be hung on the ceiling portion of the column, and the other end of the wire may be connected to the balancer device so that no pulley is used.

  Next, the lifting device of the present embodiment used in the X-ray imaging apparatus of the present embodiment will be described. In FIG. 1, 1 is the lifting device of the present embodiment, and FIG. 3 is the lifting device 1 of the present embodiment. It is a figure for demonstrating the structure of these. In FIG. 1, reference numeral 27 denotes a gripping rod that is supported by the lifting device 1 of this embodiment so as to be movable up and down. In this embodiment, the gripping rod 27 has a base portion 2701 and front ends in the vicinity of both end portions of the base portion 2701. A grip portion 2702 connected to the side is provided.

  And the raising / lowering apparatus 1 of a present Example has a spring member, and it is supposed that the grip rod 27 is supported so that it can move up and down by the elastic force of this spring member. That is, in FIG. 3, reference numeral 2 denotes a spring member. In this embodiment, the spring member 2 is an elongated thin plate-shaped metal spring member, which can be wound up and out in the vertical direction and is back of the X-ray imaging apparatus. It is fixed on the side.

  Here, the fixing method of the spring member 2 will be described. In the present embodiment, the mounting plate 3 is provided, and the mounting plate 3 is attached to the back surface of the X-ray imaging apparatus. A pin member 4 for winding a spring member is rotatably fixed to an upper portion of the mounting plate 3, and the spring member 2 is wound up by the pin member 4. While the spring member 2 is urged in the winding direction, the tip portion is drawn downward.

  In the figure, reference numeral 5 denotes a slider. That is, in this embodiment, the slider 5 is connected to the tip end side of the spring member 2. In the present embodiment, the slider 5 is made of a flat metal, and a support member for supporting the grip rod 27 is attached to one end side viewed in the width direction.

  Here, the support member will be described. In the present embodiment, the mounting plate 3 is provided with a side wall portion 301 erected along the longitudinal direction on the left and right sides in the width direction, and on one side of the side wall portion. As shown in FIG. 2, a guide groove 302 is formed along the longitudinal direction. One end side of the slider 5 and the left end side in FIG. 3 pass through the guide groove 302 and extend to the lateral side of the X-ray imaging apparatus on the back surface of the X-ray imaging apparatus. Therefore, the slider 5 moves up and down in the guide groove 302 in accordance with the winding or feeding of the spring member 2. A support member is connected to a portion of the slider 5 that extends through the guide groove 302 to the side of the X-ray imaging apparatus.

  In other words, the support member has an arm 6, and this arm 6 is located above the tip of the slider 5 that extends through the guide groove 7 to the side of the X-ray imaging apparatus. It is connected towards.

  The arm 6 includes an arm main body 601 having a predetermined length connected to the front end side of the slider 5, an elbow 602 formed on the upper end portion of the arm main body 601, and the elbow 602 via the elbow 602. A distal end portion 603 projecting toward the front side of the photographing apparatus is provided.

  Further, a long attachment member 12 is connected to the distal end portion 603 of the arm 6 toward the front side of the X-ray imaging apparatus, and a grip rod 27 is attached to the attachment member 12. . That is, in this embodiment, the support member includes an arm 6 attached to the distal end side of the slider 5 and an attachment member 12 connected to the distal end portion 603 of the arm 6. The grip rod 27 moves up and down in the same direction as the slider 5 as the slider 5 moves up and down.

  In the present embodiment, the locking plate 13 protrudes upward at both end portions of the mounting member 12, and the grip rod 27 is attached to the locking plate 13. That is, as described above, the grip rod 27 has a long base portion 2701 and a grip portion 2702 connected in the vicinity of both ends of the base portion 2701 toward the front side. And while mounting the said base 2701 on the attachment member 12, the both ends of the base 2701 are pivotally supported by the said locking plate 13, and, thereby, the grip rod 27 is supported by the said support member, It is pivotably supported. However, the support method of the grip rod 27 is not limited, and any method may be adopted as long as it is attached to the attachment member 12.

  Next, the lifting device 1 according to the present embodiment has a locking mechanism for fixing the slider 5 at a desired position. By this locking mechanism, the operator or the like moves the grip rod 27 to an arbitrary position. In addition, the grip rod 27 can be fixed at a position selected by the operator or the like.

  Here, the locking mechanism will be described in detail. FIG. 4 is an enlarged view of the locking mechanism portion. In the drawing, the locking mechanism in this embodiment includes a locking latch and the locking mechanism. And a rack on which the latch is locked. That is, in the figure, reference numeral 14 denotes a rack. In this embodiment, the rack 14 has a long plate shape, and is attached to the side wall 6 facing the side wall through which the tip portion of the slider 5 penetrates in the vertical direction. . In addition, a plurality of locking grooves 15 are formed along the vertical direction of the rack 14 at the end of the rack 14 on the side of the side wall through which the tip of the slider 5 passes.

  Next, the locking latch will be described. In the drawing, reference numeral 18 denotes a locking latch. In this embodiment, the locking latch 18 is a locking claw portion 19 projecting toward the rack 14 side. The position of the slider 5 can be fixed by locking the locking claw portion 19 in the locking groove 15.

  That is, in the present embodiment, the latching latch 18 is pivotally supported on the slider 5 by a pivotal support member 30 such as a pin in the upper part, and is rotatable about the pivotal support portion. The pawl portion 19 is engaged with the engagement groove 15 and is turned to release the engagement of the engagement claw portion 19 with the engagement groove 15.

  The latching latch 18 has a leg portion 20 at the lower end portion, and the leg portion 20 is fixed to the slide plate 24.

  On the other hand, a slide rail 25 is attached to the slider 5, and the slide plate 24 is engaged with the slide rail 25, and the X-ray imaging apparatus is engaged with the slide rail 25 when engaged. It is slidable in the width direction.

  Then, as the slide plate 24 slides with respect to the slide rail 25, the lower portion of the latching latch 18 is pivoted about a shaft support portion 30 with the slider 5, and thereby the engagement latch 18 is rotated. The pawl portion 19 is locked in the locking groove 15 or is unlocked.

  Further, both the latching latch 18 and the slide plate 24 are urged in the direction in which the latching claw portion 19 is latched in the latching groove 15. In other words, the leg portion 20 of the latch 18 is fixed to the slide plate 24 in a state in which the latch claw portion 19 is urged by the elastic member 23 such as a spring in the direction of latching the latch groove 15. On the other hand, the slide plate 24 is also slidable on the slide rail 25 in a state where the locking claw 19 is urged by the elastic member 23 such as a spring in a direction in which the locking claw 19 is locked in the locking groove 15. Is engaged. Therefore, with this configuration, the locking claw portion 19 is locked in the locking groove 15 in a normal state, and the sliding plate 24 slides on the slide rail 24, whereby the locking claw portion with respect to the locking groove 15 is obtained. It is assumed that 19 is released.

  Next, the relationship between the locking groove 15 and the locking claw portion 19 will be described. In the present embodiment, the locking groove 15 is formed from the side surface of the rack 14 in a direction perpendicular to the longitudinal direction of the rack 14. The rack-side horizontal portion 16 and the rack-side tapered portion 17 formed obliquely upward from the innermost portion of the rack-side horizontal portion 16 are formed.

  On the other hand, the latching claw portion 19 includes a latch side horizontal portion 21 that contacts the rack side horizontal portion 16 and a latch side taper portion 22 that contacts the rack side taper portion 17. In a state where the claw portion 19 is locked in the locking groove 15, the upward movement of the slider 5 is allowed and the downward movement is prevented. That is, when a pressure in the upward direction is applied to the slider 5, and the latch side taper portion 22 of the locking claw portion 19 presses the rack side taper portion 17 of the locking groove 15, the so-called wedge principle. As a result, lateral pressure is applied to both the latching latch 18 and the rack 14, but the position of the latching groove 15 in the rack 14 is fixed. The lower portion of the locking latch 18 is rotated in the direction of the anti-locking groove 15, so that the locking claw with respect to the locking groove 15 is rotated. The locking of the part 19 is released, so that the slider 5 can be raised.

  On the other hand, when a downward pressure is applied to the slider 5, the latch side horizontal portion 21 of the locking claw portion 19 presses the rack side horizontal portion 16 of the locking groove 15. The wedge principle does not work because of the pressure of the horizontal portion of the locking lever 18 and therefore the locking latch 18 cannot be lowered, that is, the locking claw portion 19 is not locked to the locking groove 15. Accordingly, the downward movement of the slider 5 is prevented. Therefore, as described above, when the locking claw portion 19 is locked in the locking groove 15, the slider 5 is allowed to move upward and is prevented from moving downward.

  Therefore, in the lifting device 1 of the present embodiment, when the grip rod 27 is raised, it is only necessary to push the grip rod 27 upward. On the other hand, unless the latch claw 19 is unlocked from the latch groove 15, Since the rod 27 cannot be lowered, it is possible to prevent the grasping rod 27 from falling down and hitting the subject during photographing.

  Next, reference numeral 26 in the figure denotes an operating wire. That is, in the lifting device 1 of the present embodiment, an operating wire 26 is attached to the slide plate 24, and the operating wire 26 extends to the vicinity of the arm 8 and has a handle attached to the arm 8. It is connected to a hand 2601 (see FIG. 1 and FIG. 2), and by pulling the operating wire 26 through the handle 2601, the slide plate 24 is slid with respect to the slide rail 25, thereby locking. It is possible to lower the grip rod 27 by rotating the lower portion of the latch 18 around the shaft support portion with the slider 5 to release the locking claw portion 19 from the locking groove 15. It is said.

  In the present invention, the locking mechanism may be configured so that the slider 5 can be fixed at a desired position in a state in which the slider 5 is movable in the winding direction or the feeding direction of the spring member 2. It is not limited to.

  Next, 7 in FIG. 3 is a fall prevention metal fitting. That is, in the lifting device of the present embodiment, the slider 5 is connected to the distal end side of the spring member 2 via the fall-preventing metal fitting 7, so that the operating wire is in a state where the spring member 2 is cut halfway. Even when 26 is pulled, the slider 5 can be prevented from falling.

  That is, in the case where the slider 5 is directly connected to the distal end side of the spring member 2, if the spring member 2 is cut off halfway, the slider 5 has a locking claw portion of the locking latch 18. 19 is supported only by the locking of the locking groove 15 of the rack 14. Therefore, in this state, the actuation wire 26 is pulled and the slide plate 24 slides with respect to the slide rail 25, and the latching latch 18 rotates about the shaft support portion with the slider 5. When the locking claw portion 19 is released from the locking groove 15, the slider 5 falls downward, and at the same time, the grip rod 27 attached to the tip side of the slider 5 via the support member. There is a possibility that it may fall down and cause an unexpected accident. Therefore, in the lifting device 1 of the present embodiment, the slider 5 is connected to the distal end side of the spring member 2 via the fall prevention fitting 7.

  This relationship will be described with reference to FIGS. 4 and 5. In this embodiment, a connecting metal fitting 701 is attached to the distal end side of the spring member 2, and the fall prevention metal fitting 7 is attached to the connecting metal fitting 701. .

  On the other hand, a support fitting 8 is attached to the slider 5, and the fall prevention fitting 7 is locked to the support fitting 8. That is, a long hole-shaped guide groove 703 is formed on the left and right sides of the fall prevention metal fitting 7 in the vertical direction, and the pin member 802 that penetrates the guide groove 703 in the support metal fitting 8. Is protruding. The fall prevention fitting 7 is overlapped with the support fitting 8 so that the pin member 802 penetrates the guide groove 703, whereby the slider 5 is connected to the distal end side of the spring member 2. ing.

  Further, in the lifting device 1 of the present embodiment, one end is fixed to the slider 5 and the other end is fixed to the fall-preventing metal fitting 7, thereby having a spring 9 that biases the fall-preventing metal fitting 7 downward. ing.

  Further, the fall-preventing metal fitting 7 has a fitting leg portion 702 facing downward, and the fitting leg portion 702 falls downward to form a fitting recess 2401 formed in the slide plate 24. Can be fitted. When the fitting leg 702 is fitted into the fitting recess 2401, the slide plate 24 is prevented from sliding in the direction in which the locking claw 19 is released from the locking groove 15.

  That is, in a situation where the locking claw portion 19 of the locking latch 18 is locked in the locking groove 15 of the rack 14, the fall prevention metal fitting 7 is biased upward by the spring member 2, and the support metal fitting 8 The pin member 802 is positioned at the lowermost position in the guide groove 703 of the fall prevention metal fitting 7, and thereby the support metal fitting 8 is engaged with the fall prevention metal fitting 7. Accordingly, the slider 5 is thereby connected to the spring member 2 via the support fitting 8, the fall prevention fitting 7, and the connection fitting 701. In this situation, the fitting leg 702 of the fall prevention metal fitting 7 is not fitted in the fitting recess 2401 of the slide plate 24, and the fall prevention metal fitting 7 is biased downward by the spring 9. Yes.

  Next, in this state, considering the case where the spring member 2 is cut halfway, when the spring member 2 is cut halfway, the fall prevention metal fitting 7 is not biased upward by the spring member 2 while the spring 9 The pin member 802 of the support metal fitting 8 moves upward in the guide groove 703 of the fall prevention metal fitting 7 and is positioned at the uppermost part in the guide groove 703. Then, the fitting leg portion 702 of the fall prevention fitting 7 moves downward with the fall of the fall prevention fitting 7 and fits into the fitting recess 2401 of the slide plate 2401.

  Then, when the fitting leg 702 is fitted into the fitting recess 2401, the slide plate 24 is prevented from sliding in the direction in which the locking claw 19 is released from the locking groove 15. In this state, the actuating wire 26 cannot be pulled. Therefore, the locking claw portion 19 cannot be unlocked from the locking groove 15 and the gripping rod 27 falls downward. Therefore, it is possible to reliably prevent an unexpected accident or the like.

  Therefore, in the lifting device 1 of this embodiment, even when the spring member 2 is cut, it is possible to prevent the movable member such as the grip bar from falling against the operator's will. is there.

  In the figure, reference numeral 801 denotes a guide cover for guiding the left and right ends of the fall prevention metal fitting 7, thereby ensuring the movement of the fall prevention metal fitting 7 in the vertical direction.

  In the present invention, the fall-preventing metal fitting is not necessarily required, and may be configured without this.

  Next, the operation of the lifting device 1 of the present embodiment configured as described above will be described. When the grip rod 27 is raised in the X-ray imaging apparatus 31 to which the lifting device 1 of the present embodiment is attached, It is only necessary to hold the rod 27 and apply upward pressure. Then, according to the above-described principle, the locking claw portion 19 of the locking latch 18 and the locking groove 15 of the rack 14 are unlocked, and the slider 5 can be raised and the grip rod 27 can be raised. It is. At this time, the slider 5 is connected to the tip of the spring member 2 and the spring member 2 is biased in the winding direction, so that the grip rod 27 can be raised with a little force.

  On the other hand, when lowering the gripping rod, the operating wire 26 is pulled through the handle 2601, thereby sliding the slide plate 24 relative to the slide rail 25, and the latching latch 18 is connected to the slider 5. By rotating the lower portion around the shaft support portion, the locking claw portion 19 is unlocked from the locking groove 15, and in this state, downward pressure is applied to the gripping rod 27. . Then, the grip rod 27 can be lowered, and after the operation wire 25 is returned to the original position after being lowered to a desired position, the latch claw portion 19 is latched with respect to the latch groove 15, and the grip rod The position can be fixed. At this time, as described above, the spring member 2 to which the slider 5 is coupled is biased in the winding direction, and when the grip rod 27 is lowered, a force is required as compared with the case of raising it. Therefore, the grip rod 27 can be prevented from suddenly descending and hitting the subject or the like.

  Furthermore, in the lifting device 1 of the present embodiment, the slider 5 is connected to the spring member 2 via the fall prevention fitting 7, and when the spring member 2 is cut halfway, the fall prevention fitting 7 is dropped, Since the slide plate 24 is prevented from sliding in the direction in which the locking claw portion 19 is released from the locking groove 15, even when the spring member 2 is broken, the grip rod 27 is unexpectedly moved. It is possible to reliably prevent an accident such as a sudden drop.

  In this way, in the lifting device of this embodiment, the grip bar and the like can be moved up and down by the spring member, so that the grip bar can be supported up and down without using a complicated configuration. For this purpose, for example, when the gripping bar is supported by the lifting device of this embodiment so that it can be moved up and down in an X-ray imaging apparatus that manually moves the image receiving part up and down, the image receiving part is supported even when the gripping bar is removed. While there is no need to adjust the counterweight, the grip rod can be easily supported up and down without increasing costs.

  Further, the lifting device of the present embodiment employs a locking mechanism including a locking latch and a rack to which the locking latch is locked, and the locking claw portion of the locking latch is a rack. In the state where it is locked in the locking groove, the upward movement of the grip bar is allowed and the downward movement is prevented, and the grip bar is supported via the support member and the slider. Since the spring member is biased in the winding direction and braking is applied to the lowering of the grip bar, it is possible to prevent the grip bar from falling unexpectedly and hitting the subject. Is possible.

  Further, in the lifting device 1 of the present embodiment, even when the spring member 2 is cut halfway, the gripping rod 27 is surely prevented from suddenly descending unexpectedly even if the spring member 2 is cut halfway. can do.

  In the above description, the case where the gripping rod is supported so as to be movable up and down has been described. However, the object supported by the lifting device of the present invention so as to be movable up and down is not limited to the gripping rod. In the apparatus, all of the movable members that are supported to move up and down are the objects to be supported. Therefore, for example, the image receiving unit and the apparatus main body including the image receiving unit may be supported by the lifting device of the present invention so as to be movable up and down.

  The present invention supports a movable part that can be moved up and down because the movable part such as the grip bar and the image receiving part can be moved up and down manually while suppressing the cost without adopting a complicated configuration in the X-ray imaging apparatus. The present invention can be applied to any lifting device.

DESCRIPTION OF SYMBOLS 1 Lifting device 2 Spring member 3 Mounting plate 301 Side wall part 302 Guide groove 4 Pin member 5 Slider 6 Arm 601 Arm main body 602 Elbow 603 Tip part 7 Fall prevention metal fitting 701 Connection metal fitting 702 Fit leg 703 Guide groove 8 Support metal fitting 801 Guide Cover 802 Pin member 9 Spring 12 Mounting member 13 Locking plate 14 Rack 15 Locking groove 16 Rack side horizontal portion 17 Rack side taper portion 18 Locking latch 19 Locking claw portion 20 Leg portion 21 Latch side horizontal portion 22 Latch side Taper portion 23 Spring 24 Slide plate 2401 Fitting recess 25 Slide rail 26 Actuation wire 2601 Handle 27 Grip rod 2701 Base portion 2702 Grip portion 30 Axial support member 31 X-ray imaging device 32 Column 33 Guide 34 Device body 35 Image receiving portion 36 Light receiving Body insertion port 3 7 Grip 38 Control box 39 Handle 40 Lift 41 Mounting plate 42 Movable plate 43 Connecting portion 44 Pulley 45 Wire 46 Counterweight 47 Connecting bracket 48 Bulkhead 49 Rotating shaft

Claims (7)

In the X-ray imaging apparatus, an elevating apparatus for an X-ray imaging apparatus that movably supports a movable member (27) such as a grip rod or an image receiving unit,
A spring member (2) attached to the shaft member so as to be capable of being wound and unwound and biased in the winding direction;
A slider (5) connected to the tip of the spring member (2) so as to be movable in the winding and unwinding direction of the spring member (2);
A support member (8, 12) connected to the slider (5) and supporting the movable member (27);
An X-ray comprising a locking mechanism for making the position of the slider (5) movable in the winding direction or the feeding direction of the spring member (2) and fixing it at a desired position. Elevating device for photographing device. The locking mechanism is
A locking latch (18) having a locking claw (19), which is pivotally attached to the slider (5);
A rack (14) that is long and has a number of locking grooves (15) that are locked by the locking claws (19) of the locking latch (18) in the longitudinal direction. Equipped,
The locking latch (18) is biased in a direction in which the locking claw portion (19) is locked in the locking groove (15), and is rotated in the counter-biasing direction to rotate the locking groove ( 15) The locking claw portion (19) is released from locking,
In a state where the locking claw portion (19) is locked in the locking groove (15), the slider (5) is allowed to move in the direction in which the spring member (2) is wound, The elevating device for an X-ray imaging apparatus according to claim 1, characterized in that the movement in the direction in which the spring member (2) is extended is prevented.   A rack side horizontal portion (16) in which the locking groove (15) is formed from a side surface of the rack (14) in a direction perpendicular to the longitudinal direction of the rack (14), and the rack side horizontal portion (16) The latch claw portion (19) is formed by a rack side taper portion (17) formed obliquely from the innermost portion, and the latch claw portion (19) is in contact with the rack side horizontal portion (16). A latch-side taper portion (22) that abuts the portion (21) and the rack-side taper portion (17), whereby the locking claw portion (19) is locked in the locking groove (15). In the state, the slider (5) is allowed to move in the direction in which the spring member (2) is wound, and is prevented from moving in the direction in which the spring member (2) is drawn out. A lifting device for an X-ray imaging apparatus according to claim 2. The locking latch (18) pivots the upper part on the slider (5) so that the lower part is rotatable, and is slidable on a slide rail (25) attached to the slider (5). The lower part is connected to the slide plate (24) engaged with
By urging the slide plate (24) toward the rack (14),
The locking latch (18) is rotatable and biased in a direction in which the locking claw (19) is locked in the locking groove (15). The raising / lowering apparatus of the X-ray imaging apparatus of Claim 3.   The slide plate (24) is formed with a fitting recess (2401) and has a fitting leg (702) that can be fitted into the fitting recess (2401). The fitting leg (702) A fall prevention plate that prevents the slide plate (24) from moving in the direction of releasing the locking of the locking claw (19) and the locking groove (15) by being fitted into the fitting recess (2401). (7) is connected to the distal end side of the spring member (2), the fall prevention plate (7) is connected to the support fitting (8) so as to be dropped downward, and the support fitting (8) is connected to the slider (8). 5. The elevating device for an X-ray imaging apparatus according to claim 4, wherein the slider (5) is connected to the tip of the spring member (2) by being connected to 5).   The elevating device for an X-ray imaging apparatus according to claim 1, wherein the movable member is an image receiving unit.   The elevating apparatus for an X-ray imaging apparatus according to claim 1, wherein the movable member is a grip bar.

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