bracket

Abstract

To provide an inexpensive bracket that allows a camera or other medical equipment to be placed at a predetermined position during dialysis treatment or the like. [Solution] This bracket 10 has a base frame 11 and a camera mount 12. The camera mount 12 is connected to the base frame 11 via a position change mechanism 13. The camera mount 12 slides in a vertical direction 15 and swings in a horizontal direction 16. The base frame 11 has a support portion 20 and a clamp portion 21. A bottom plate 22 of the support portion 20 has an elongated hole 26. The camera mount 12 has a support column 37. The support column 37 is inserted into the elongated hole 26. A locking groove 46 and a locking groove 48 are provided on a front surface 45 and a rear surface 47 of the support column 37. The tip portion 35 of the support portion 20 fits into the locking groove 46. The protrusion 36 of the support portion 20 fits into the locking groove 48.

Description

[Technical Field]

[0001] This invention relates to a bracket that is detachably attached to a base member (for example, a medical bed) for arranging functional parts such as medical instruments near the base member. [Background technology]

[0002] For example, when a patient is receiving intravenous therapy, it is desirable to maintain a constant distance between the patient and the intravenous stand to ensure safety. For this reason, a connecting jig such as that shown in Patent Document 1 has been provided.

[0003] The connecting jig disclosed in the document has a first attachment member that can be detachably attached to a bed or a stretcher, a second attachment member that is attached to the support pole of an IV stand and can move along the support pole, and a connecting member that connects the first and second attachment members. The connecting member has moderate flexibility. By deforming the connecting member, the second attachment member can be attached to the support pole at any height within a predetermined area. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-68908 Summary of the Invention [Problem to be solved by the invention]

[0005] Various treatments and procedures are administered to patients, including dialysis and nasogastric tube placement. To ensure the safety of these procedures, the inventors have developed a system that captures images of the dialysis needle and the patient with a camera and detects needle removal in advance based on changes in the image. This camera can be placed near the bed via a conventional connecting jig.

[0006] In such systems, the positional relationship between the camera and the patient's body is important, but since there are significant individual differences in patient size, the camera's position and orientation must be appropriately adjusted to suit the patient's size and position on the bed.

[0007] However, conventional connecting jigs have a small adjustment range, making it difficult to position the camera appropriately. Although mechanisms for gripping components such as cameras and controlling their position and orientation are known, such mechanisms are complex and expensive.

[0008] The present invention was made against this background, and its purpose is to provide an inexpensive bracket that allows cameras and other medical instruments to be positioned in predetermined positions, for example, during dialysis treatment or nasogastric tube treatment. [Means for solving the problem]

[0009] (1) A bracket according to the present invention comprises a base frame fixed to a bed, a functional component mounting member attached to the base frame, and a position change mechanism for changing the position of the functional component holding member relative to the base frame. The position change mechanism has a holding portion for holding the functional component mounting member, a first engaging portion, a first engaged portion, and a second engaging portion and a second engaged portion. The holding portion is attached to the base frame and holds the functional component mounting member while allowing the functional component mounting member to slide along a predetermined direction and swing in a direction intersecting the predetermined direction. The first engaging portion is attached to the base frame and engages with the functional component mounting member to restrict sliding of the functional component mounting member. The first engaged portion is attached to the functional component mounting member and engages with the first engaging portion. The second engaging portion is attached to the base frame and engages with the functional component mounting member to restrict swinging of the functional component mounting member. The second engaged portion is attached to the functional component holding member and engages with the second engaging portion.

[0010] According to this configuration, the base frame is fixed to a desired position on the bed. This desired position may be, for example, a bed frame or a side rail. A functional component mounting member is attached to the base frame, and a medical functional component is attached to the functional component mounting member. The medical functional component is typically a camera or the like for monitoring the patient's condition during dialysis treatment or nasogastric tube treatment.

[0011] The position change mechanism allows the position of the functional component mounting member to change. Specifically, the functional component mounting member is held in the holding portion. In this state, the functional component mounting member is slidable in a predetermined direction and can swing in a direction intersecting the predetermined direction. Therefore, the position of the medical functional component can be adjusted within the range of sliding and swinging of the functional component mounting member. Moreover, because the position change mechanism has a simple structure, the bracket according to this device can be constructed inexpensively.

[0012] More specifically, a first engaging portion provided on the base frame engages with a first engaged portion of the functional component mounting member, thereby restricting the sliding of the functional component mounting member. This determines the position of the medical functional component in a predetermined direction. Furthermore, a second engaging portion provided on the base frame engages with a second engaged portion of the functional component mounting member, thereby restricting the swinging of the functional component mounting member. This determines the swinging position of the medical functional component. In other words, the posture of the functional component mounting member is adjusted, and the placement position of the medical functional component is determined.

[0013] (2) The functional component mounting member preferably has a straight rod-shaped support. The base frame may be made of a bent or curved strip-shaped flat plate, and the holding portion may be formed by a part of the strip-shaped flat plate. The holding portion preferably has an elongated hole through which the support passes in the vertical direction and extends in a direction intersecting the vertical direction.

[0014] In this configuration, the support posts of the functional component mounting member are inserted into the elongated holes provided in the holding portion, which allows the functional component mounting member to easily slide up and down and swing in a direction intersecting the up and down direction.

[0015] (3) The base frame preferably has a pair of projections that face each other and sandwich the support posts.

[0016] In this configuration, the support post is clamped between the pair of protrusions, so that the functional component mounting member is held with a constant holding force.

[0017] (4) The first engaging portion preferably has a first locking claw provided on one of the pair of protrusions. The first engaged portion preferably has a first locking groove provided on the support and into which the first locking claw is inserted.

[0018] In this configuration, the support post is securely held to the base frame by inserting the first locking claw into the first locked groove, thereby reliably restricting the sliding of the functional component mounting member.

[0019] (5) The second engaging portion preferably has a second locking claw provided on the other of the pair of protrusions. The second engaged portion preferably has a second locking groove provided on the support and into which the second locking claw is inserted.

[0020] In this configuration, the support post is securely held by the base frame by inserting the second locking claw into the second locked groove, thereby reliably restricting the swinging of the functional component mounting member.

[0021] (6) The first locking claw is preferably formed from an edge portion of a strip-shaped flat plate.

[0022] In this configuration, the edge of the belt-shaped flat plate forms the first locking claw, which can more reliably engage with the support post, thereby more reliably restricting the sliding of the functional component mounting member.

[0023] (7) The second locking claw preferably comprises a plurality of projections arranged in a direction intersecting the up-down direction.

[0024] In this configuration, the posture (tilt) of the support is determined by selectively fitting one of the multiple protrusions into the second locking groove. The posture of the support is changed by changing the protrusion that fits into the second locking groove. Therefore, the adjustment range of the posture of the functional component mounting member is wide.

[0025] (8) It is preferable that the plurality of first locking grooves and the plurality of second locking grooves are arranged in parallel along the vertical direction.

[0026] In this configuration, the height position of the support is determined by selectively engaging one of the multiple first locking grooves with the first locking claw. Therefore, the height position of the support is adjusted by changing the first locking groove that engages with the first locking claw. In response to this, the second locking claw fits into the second locking groove, so the swing position (inclination) of the support whose height position has been adjusted is also adjusted.

[0027] (9) The inner wall surface shape of the first locking groove and the inner wall surface shape of the second locking groove may be the same.

[0028] This configuration allows for a simpler construction of the support pillars, reducing the manufacturing costs of the support pillars.

[0029] (10) It is preferable that the groove width of the first locking groove or the groove width of the second locking groove be smallest at the center and gradually increase symmetrically with respect to the center.

[0030] In this configuration, the edges of the first and second locking grooves are inclined at a predetermined angle symmetrically about the center, allowing the support post to swing smoothly.

[0031] (11) It is preferable that a part of the belt-shaped flat plate is curved in a U-shape and has a clamp part for clamping the bed.

[0032] In this configuration, the clamping portion elastically clamps the bed frame or the like, and the base frame is fixed to the bed. Since the base frame is fixed by the clamping portion with such a simple structure, the manufacturing cost of the base frame is reduced.

[0033] (12) The support may have an arm extending in a direction intersecting the vertical direction and to which a functional component is attached.

[0034] In this configuration, a medical functional component such as a camera is held via the arm. Because the arm extends in a direction intersecting the vertical direction, the position of the medical functional component can be adjusted over a wider range. [Brief explanation of the drawings]

[0035] [Figure 1] FIG. 1 is a perspective view of a bracket 10 according to an embodiment of the present invention. [Figure 2] FIG. 2 is a perspective view of the appearance of the bracket 10. As shown in FIG. [Figure 3] FIG. 3 is a perspective view of the exterior of the base frame 11 according to an embodiment of the present invention. [Figure 4] FIG. 4 is a perspective view of the exterior of the base frame 11. As shown in FIG. [Figure 5] FIG. 5 is an enlarged cross-sectional view of a main part of the side plate 23 of the base frame 11. As shown in FIG. [Figure 6] FIG. 6 is a perspective view of the support post 37 of the camera mount 12 according to one embodiment of the present invention. [Figure 7] FIG. 7 is a perspective view of the support column 37. [Figure 8] FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. [Figure 9] FIG. 9 is a cross-sectional view taken along line IX-IX in FIG. [Figure 10] FIG. 10 is a perspective view of the arm 17 of the camera mount 12. As shown in FIG. [Figure 11] FIG. 11 is a perspective view of the arm 17. [Figure 12]FIG. 12 is an enlarged perspective view of a main part of a support 57 according to a modified example of the embodiment of the present invention. [Figure 13] FIG. 13 is a view taken along the arrow XIII in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0036] A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. It should be noted that this embodiment is merely one aspect of the bracket according to the present invention, and that modifications may be made without departing from the spirit and scope of the present invention.

[0037] 1.Schematic configuration

[0038] 1 and 2 are external perspective views of a bracket 10 according to one embodiment of the present invention. In these figures, arrows 14 indicate the front-to-rear direction, with the front side of the paper in Fig. 1 being the front side 18 and the front side of the paper in Fig. 2 being the rear side 19.

[0039] This bracket 10 is typically used to attach a medical camera to a medical bed. The medical camera captures images of the patient during dialysis treatment or nasogastric tube treatment, and the image data is used to prevent accidents such as the removal of the tube or dialysis needle.

[0040] The bracket 10 has a base frame 11 and a camera mount 12 (corresponding to the "functional component mounting member" in the claims). In this embodiment, the camera mount 12 is connected to the base frame 11 via a position change mechanism 13, which will be described later. This position change mechanism 13 allows the camera mount 12 to slide in an up-down direction 15 (corresponding to the "predetermined direction" in the claims) and swing in a left-right direction 16 (corresponding to the "direction intersecting the predetermined direction" in the claims). As will be described later, the medical camera is attached to the tip 53 of the arm 17 of the camera mount 12, and by changing the position of the camera mount 12, the position of the medical camera relative to the patient is appropriately maintained.

[0041] 2. Base frame

[0042] The base frame 11 is fixed to a predetermined position on the medical bed, for example, to a side rail or handrail. In this embodiment, the base frame 11 is made of synthetic resin. As will be described in detail later, the base frame 11 is formed by curving or bending a flat bar (corresponding to a "belt-shaped flat plate" in the claims). The material of the base frame 11 is not limited to synthetic resin, and for example, a metal plate may also be used.

[0043] 3 and 4 are external perspective views of the base frame 11. Fig. 3 is a view of the base frame 11 as seen from the front side 18, and Fig. 4 shows the base frame 11 inverted in the up-down direction 15 in Fig. 3.

[0044] The base frame 11 has a support portion 20 and a clamp portion 21 continuous therewith, which are integrally molded. The support portion 20 has a generally curved U-shape as a whole, and has a bottom plate 22 (corresponding to the "holding portion" in the claims), and side plates 23 and 24. In other words, the bottom plate 22 is formed from a part of the flat bar that constitutes the base frame 11.

[0045] The bottom plate 22 is rectangular. A side plate 23 extends upward from the edge of the front side 18 of the bottom plate 22, and a side plate 24 extends upward from the edge of the rear side 19 of the side plate 22. The side plates 23 and 24 face each other in the front-to-rear direction 14. An upper end 25 of the side plate 23 (corresponding to the "first engagement portion" in the claims) is bent and extends toward the rear side 19. Therefore, a tip 35 of the upper end 25 (corresponding to the "first locking claw" and the "edge portion of the belt-shaped flat plate" in the claims) protrudes toward the clamp portion 21 toward the rear side 19.

[0046] As shown in Figure 4, a long hole 26 is provided in the center of the bottom slab 22. This long hole 26 penetrates the bottom slab 22 in the up-down direction 15 and extends along the left-right direction 16. A length 27 of the long hole 26 in the left-right direction 16 can be set as appropriate.

[0047] FIG. 5 is an enlarged cross-sectional view of a main part of the side plate 23. As shown in FIG.

[0048] As shown in the same figure and Figure 3, in this embodiment, a hook 29 is provided on the front surface 28 of the side plate 23. As shown in the figure, the hook 29 is a member with an L-shaped cross section. In this embodiment, the hook 29 is formed integrally with the side plate 23. However, the hook 29 may be formed as a separate member from the side plate 23 and attached to the side plate 23, or the hook 29 may be omitted.

[0049] As shown in FIGS. 3 and 4 , the clamping unit 21 includes an S-shaped plate 30 and a U-shaped plate 31. The S-shaped plate 30 is formed contiguous with the upper edge of the side plate 24. The S-shaped plate 30 is curved in an S-shape and extends in the up-down direction 15. The S-shaped plate 30 has a convex portion 32 and a concave portion 33. The convex portion 32 protrudes toward the side plate 23, and the concave portion 33 is continuous with the convex portion 32 and curves toward the side plate 24. The U-shaped plate 31 is formed contiguous with the upper edge of the S-shaped plate 31. As shown in the drawings, the U-shaped plate 31 includes a connecting portion 34. The connecting portion 34 is curved in an arc shape, smoothly connecting the concave portion 33 of the S-shaped plate 30 to the U-shaped plate 31. The U-shaped plate 31 can be elastically deformed in the front-rear direction 14, and its elastic force allows it to clamp a handrail or the like of a medical bed.

[0050] A protrusion 36 (corresponding to the "second engagement portion" and "second locking claw" in the claims) is provided at a predetermined position on the U-shaped plate 31, in this embodiment, at the top of the connecting portion 34. In this embodiment, four protrusions 36 are aligned at equal intervals in the left-right direction 16 (a direction intersecting with the up-down direction 15). As shown in FIG. 3, the protrusions 36 are cylindrical, and their tips form a curved surface. However, the external shape of the protrusions 36 is not particularly limited, and they may be any member that protrudes toward the front side 18. As long as multiple protrusions 36 are aligned on the connecting portion 34, the number of protrusions 36 is not particularly limited, and they do not have to be aligned at equal intervals.

[0051] As shown in the figure, the protrusion 36 protrudes toward the tip 35 of the side plate 23. The tip 35 of this side plate 23 protrudes toward the protrusion 36. In other words, the two form a pair of protrusions facing each other. This allows the camera mount 12 to be sandwiched between the support part 20 and the clamp part 21, as will be described later.

[0052] 3. Camera mounting stand

[0053] 1, the camera mount 12 has a support 37 and an arm 17. These are made of metal or resin, and in this embodiment, they are made of the same material as the base frame 11. However, the material of the support 37 is not particularly limited.

[0054] 6 and 7 are perspective views of the support column 37. In these figures, the directions of the arrows indicating the front-to-rear direction 14, the up-down direction 15, and the left-to-right direction 16 are consistent with those in Figures 1 and 2. Figure 7 shows a state in which the front and back of Figure 6 are reversed.

[0055] In this embodiment, the support pillar 37 is a straight rod-shaped member as shown in the figure. The outer shape of the upper end 38 of the support pillar 37 gradually expands upward. The outer shape of the lower end 39 of the support pillar 37 gradually contracts downward. However, the outer shapes of the upper end 38 and the lower end 39 do not have to change.

[0056] 8 is a cross-sectional view taken along line VIII-VIII in FIG. 6, and FIG. 9 is a cross-sectional view taken along line IX-IX in FIG.

[0057] As shown in Figures 6 and 8, the cross-sectional shape of the support pillar 37 is rectangular overall, with corners 44 chamfered. As a result, the corners 44 form smoothly curved surfaces. However, the cross-sectional shape of the support pillar 37 is not particularly limited. Grooves 42 and 43 are provided on the left side surface 40 and right side surface 41 (see Figure 7) of the support pillar 37. The shapes of grooves 42 and 43 are identical, and they are arranged symmetrically. Note that grooves 42 and 43 may be omitted.

[0058] As shown in FIGS. 6 and 9 , a locking groove 46 (corresponding to the “first engaged portion” and “first locking groove” described in the claims) is provided on the front surface 45 of the support 37. This locking groove 46 extends along the left-right direction 16 and covers the entire front surface 45. In this embodiment, the inner wall surface shape of the locking groove 46 is formed in an arc shape and is uniform along the left-right direction 16. In this embodiment, six locking grooves 46 are provided on the front surface 45. These locking grooves 46 are arranged side by side at equal intervals along the up-down direction 15. However, the number of locking grooves 46 is not particularly limited, and they do not have to be arranged side by side at equal intervals. As will be described later, the locking groove 46 is configured to engage with the tip portion 35 of the base frame 11 (see FIG. 1 ). Therefore, the inner wall surface shape of the locking groove 46 is not particularly limited, and may be any shape that can engage with the tip portion 35 of the base frame 11.

[0059] As shown in FIG. 7 , a locking groove 48 (corresponding to the "second engaged portion" and "second locking groove" described in the claims) is provided on a rear surface 47 of the support column 37. In this embodiment, the locking groove 48 has the same shape as the locking groove 46 and is disposed symmetrically with the locking groove 46 in the front-rear direction 14. However, the shape of the locking groove 48, i.e., the shape of the inner wall surface of the locking groove 48, may be different from that of the inner wall of the locking groove 46, and the locking grooves 48 may not be disposed symmetrically with respect to the front-rear direction 14. As will be described later, the locking groove 48 is configured to engage with a protrusion 36 provided on the base frame 11 (see FIG. 1 ). Therefore, the locking groove 48 may have any shape that allows it to engage with the protrusion 36.

[0060] 6 and 7, an anchor 50 is provided on an upper surface 49 of the support pole 37. In this embodiment, the anchor 50 has a round bar shape and protrudes upward. As shown in FIG. 1, the arm 17 is attached to the upper surface 49 of the support pole 37 while being supported by the anchor 50. Although not shown in the figures, for example, a screw may be formed in the anchor 50, and the arm 17 may be fastened and fixed by fitting a nut to the anchor 50.

[0061] 10 and 11 are perspective views of the arm 17. Fig. 11 shows the arm 17 inverted vertically from Fig. 10.

[0062] In this embodiment, the arm 17 is a rod-shaped member that extends straight. A through-hole 52 is provided at a base end 51 of the arm 17. A camera mounting surface 54 is formed at a tip end 53 of the arm, and a screw shaft 55 is provided on this camera mounting surface 54. The medical camera is screwed onto the screw shaft 55 and is fixed in a state where it abuts against the camera mounting surface 54. In this embodiment, the cross-sectional shape of the arm 17 is C-shaped, but the cross-sectional shape is not particularly limited as long as the arm 17 has the required rigidity.

[0063] 4. Bracket usage instructions and posture change mechanism

[0064] As described above, the bracket 10 is typically attached to a medical bed. When dialysis treatment or nasogastric tube treatment is performed, a medical camera captures images of the patient lying on the medical bed to ensure the safety of such treatment or procedure. The medical camera is fixed to the tip 53 of the arm 17 and is positioned at a desired position relative to the patient via the bracket 10.

[0065] In this embodiment, the base frame 11 is fixed to a predetermined position such as the handrail of a medical bed. Specifically, the U-shaped plate 31 of the clamp unit 21 is elastically expanded and fitted to the handrail of the medical bed. The U-shaped plate 31 is fixed to the handrail by clamping the handrail with its elastic force.

[0066] The medical camera is mounted on the arm 17, and the arm 17 is attached to the support 37. Specifically, the support 37 is inserted into the elongated hole 26 (see FIGS. 4 and 3) provided in the bottom plate 22 (see FIGS. 1 and 2). Therefore, the support 37 can be displaced in the left-right direction 16 along the elongated hole 26 and can slide in the up-down direction 15. The support 37 is inserted between the support part 20 and the clamp part 21 and is sandwiched between them. That is, the support 37 is sandwiched in the front-rear direction 14 between the tip 35 of the side plate 23 and the protrusion 36 provided on the clamp part 21.

[0067] When the support column 37 slides in the up-down direction 15, the tip 35 of the side plate 23 fits into the locking groove 46 of the support column 37. When the support column 37 is displaced in the left-right direction 16, the protrusion 36 fits into the locking groove 48 of the support column 37.

[0068] By assembling the camera mount 12 to the base frame 11 in this manner, the attitude of the camera mount 12 relative to the base frame 11 is adjusted.

[0069] Specifically, the bottom plate 22 has the long holes 26, which allow the support posts 37 to slide in the up-down direction 15 and swing in the left-right direction 16.

[0070] On the other hand, the tip 35 of the side plate 23 fits into a locking groove 46 provided in the support 37, thereby restricting the sliding of the support 37. The position of the support 37 relative to the base frame 11 (i.e., the height of the camera mount 12) is determined by which of the multiple locking grooves 46 the tip 35 fits into.

[0071] The projections 36 fit into the engagement grooves 48 of the support posts 37, thereby restricting the swinging of the support posts 37. The angle of the support posts 37 relative to the base frame 11 (i.e., the degree of inclination of the camera mount 12) is determined by which of the multiple projections 36 fits into the locking grooves 48.

[0072] That is, the posture change mechanism 13 that changes the posture of the camera mount 12 is composed of the bottom plate 22 having the long hole 26, the tip 35 of the side plate 23 and the locking groove 46 of the support 37, the protrusion 36 provided on the clamp portion 21 and the locking groove 48 of the support 37.

[0073] The camera mount 12 is slidable in the vertical direction 15 and swung in the horizontal direction 16 via the position change mechanism 13, and is held in the required position, allowing the position of the medical camera to be adjusted. As a result, the medical camera is held in an appropriate position according to the patient's body shape and posture. In addition, because the position change mechanism 13 has an extremely simple structure as described above, there is also the advantage that the bracket 10 can be constructed inexpensively.

[0074] In this embodiment, the support posts 37 are inserted into the long holes 26 of the bottom plate 22, and can be easily slid in the vertical direction 15 and swung in the horizontal direction 16. In other words, the position of the camera mount 12 can be changed easily and reliably.

[0075] In this embodiment, the protrusion 36 and the tip 35 of the side plate 23 face each other and sandwich the support 37. Therefore, the camera mount 12 is held with a constant holding force and is stably positioned relative to the base frame 11.

[0076] In this embodiment, the tip 35 of the side plate 23 is fitted into the locking groove 46, thereby reliably holding the support 37 to the base frame 11. Therefore, sliding of the camera mount 12 in the up-down direction 15 is reliably restricted. Moreover, the projection 36 is fitted into the locking groove 48, thereby reliably holding the support 37 to the base frame 11. Therefore, swinging of the camera mount 12 is reliably restricted.

[0077] In particular, the tip 35 of the side plate 23 is made of the edge of a flat bar, so it easily and reliably fits into the locking groove 46. Therefore, sliding of the camera mount 12 is more reliably restricted.

[0078] In this embodiment, since the multiple protrusions 36 are arranged in the left-right direction 16, the inclination of the support column 37 can be changed simply by changing the protrusion 36 that fits into the locking groove 48. In addition, since the multiple locking grooves 46 are arranged in the up-down direction 15, the height position of the support column 37 can be changed simply by changing the locking groove 46 that fits into the tip end 35 of the side plate 23. Therefore, the posture of the camera mount base 12 can be easily adjusted, and the adjustment range is wide.

[0079] In this embodiment, the locking grooves 46 and 48 have the same shape, which simplifies the structure of the support pillar 37 and reduces the manufacturing cost of the support pillar 37.

[0080] In this embodiment, the base frame 11 is fixed to the medical bed by the elastic force of the clamp portion 21, which has the advantage that the structure of the base frame 11 is simple and the manufacturing cost can be reduced.

[0081] In this embodiment, the medical camera is attached to an arm 17. This arm 17 is a straight rod, so the position of the medical camera can be adjusted over a wide range.

[0082] 5. Modifications of the embodiment

[0083] Fig. 12 is an enlarged perspective view of a main part of a support column 57 according to a modified example of this embodiment. Fig. 13 is a view taken along the arrow XIII in Fig. 2, and is a view of the support column 57 as seen from the front side 18.

[0084] Pillar 57 according to this modification differs from pillar 37 (see FIGS. 6 and 7) in the structure of locking groove 58. That is, as shown in FIGS. 6 and 7, the inner wall surface of locking groove 46 provided on front surface 45 of pillar 37 has an arcuate shape (as does locking groove 48 provided on rear surface 47), and locking grooves 46 and 48 are formed uniformly in left-right direction 16, whereas locking groove 58 provided on front surface 45 of pillar 57 has a substantially weight-like shape, as shown in FIGS. 12 and 13. Note that a locking groove having the same shape as locking groove 58 is also provided on rear surface 47 of pillar 57, symmetrically in front-rear direction 14.

[0085] 12 and 13, the locking groove 58 extends in the left-right direction 16 and is narrowed at the center. That is, the groove width 60 (dimension along the up-down direction 15) of the locking groove 58 is smallest at the center 59 of the locking groove 58 and gradually increases symmetrically toward the up-down direction 15. That is, as shown in FIG. 13, the upper edge 64 of the locking groove 58 is inclined at an angle θ symmetrically about the center 50. Similarly, the lower edge 65 of the locking groove 58 is inclined at an angle θ symmetrically about the center 50. Although the angle θ is not particularly limited, it is preferable that it corresponds to the angle at which the support 37 swings in the left-right direction 16. This not only allows the support 37 to swing smoothly, but also ensures that the engagement between the tip 35 of the support part 20 and the engagement groove 58 is reliably maintained.

[0086] As shown in FIG. 12 , the locking groove 58 opens to the front surface 45, and in this modified example, the shape of its inner wall surface is formed in a substantially U-shape. However, the shape of the inner wall surface of the locking groove 58 is not particularly limited and may be the same as the shape of the inner wall surface of the locking groove 46 and the locking groove 48. In this modified example, the upper surface 61 and the lower surface 62 of the inner wall surface of the locking groove 58 are inclined. Specifically, the upper surface 61 is inclined so that the groove width 60 gradually decreases downward, and the lower surface 62 is inclined so that the groove width 60 gradually decreases upward. However, the upper surface 61 and the lower surface 62 may not be inclined and may be perpendicular to the bottom surface 63 of the locking groove 58. [Explanation of symbols]

[0087] 10. Bracket 11. Base frame 12. Camera mounting base 13. Posture change mechanism 14...Anteroposterior direction 15. Up and down direction 16...Left and right direction 18...Front 19...rear side 20...Support part 21 Clamp section 22...bottom plate 23 Side panel 24 Side panel 25...Top end 26...long hole 30...S-shaped board 31...U-shaped board 34...Connection part 35...Tip 36...protrusion 37...post 45...Front 46 Locking groove 47...rear 48 Locking groove

Claims

1. A base frame fixed to the bed; a functional component mounting member provided on the base frame; a position change mechanism that changes the position of the functional component holding member relative to the base frame, The attitude change mechanism includes: a holding portion provided on the base frame, the holding portion holding the functional component mounting member while allowing the functional component mounting member to slide along a predetermined direction and swing in a direction intersecting the predetermined direction; a first engaging portion provided on the base frame and engaging with the functional component mounting member to restrict sliding of the functional component mounting member; a second engaging portion provided on the base frame for engaging with the functional component mounting member to restrict swinging of the functional component mounting member; a first engaged portion provided on the functional component mounting member and engaging with the first engaging portion; a bracket provided on the functional component holding member and having a second engaged portion that engages with the second engaging portion;

2. The functional component mounting member has a straight rod-shaped support, the base frame is made of a bent or curved band-shaped flat plate, and the holding portion is formed by a part of the band-shaped flat plate; The bracket according to claim 1 , wherein the holding portion has an elongated hole through which the support post passes along the vertical direction and which extends in a direction intersecting the vertical direction.

3. The bracket according to claim 2 , wherein the base frame has a pair of protrusions that face each other and sandwich the support post therebetween.

4. the first engagement portion has a first locking claw provided on one of the pair of protrusions, The bracket according to claim 2 or 3, wherein the first engaged portion is provided on the support and has a first locking groove into which the first locking claw is inserted.

5. the second engaging portion has a second locking claw provided on the other of the pair of protrusions, The bracket according to claim 4 , wherein the second engaged portion is provided on the support and has a second locking groove into which the second locking claw is inserted.

6. The bracket according to claim 5 , wherein the first locking claw is formed from an edge portion of the band-shaped flat plate.

7. The bracket according to claim 4 , wherein the second locking claws are made up of a plurality of projections arranged side by side in a direction intersecting the vertical direction.

8. The bracket according to claim 5 , wherein a plurality of the first locking grooves and a plurality of the second locking grooves are arranged in parallel along the vertical direction.

9. The bracket according to claim 5 , wherein the first locking groove and the second locking groove have the same inner wall surface shape.

10. The bracket according to claim 5 , wherein the groove width of the first locking groove or the groove width of the second locking groove is smallest at the center and gradually increases symmetrically with respect to the center.

11. 4. The bracket according to claim 2, wherein a part of the belt-shaped flat plate is curved in a U-shape and has a clamp portion for clamping the bed.

12. The bracket according to claim 2 or 3, wherein the support post has an arm extending in a direction intersecting the vertical direction and to which a functional component is attached.

Images