JP4396445B2 - Rotation lock mechanism of variable angle rotation fence, variable angle rotation fence, bed - Google Patents

Description

  The present invention relates to a rotation lock mechanism of an angle variable rotation fence mainly used for a bed side fence such as a hospital bed or a home care bed, and an angle provided with the rotation lock mechanism. The present invention relates to a variable rotation fence and a bed provided with the angle variable rotation fence as a side fence.

  The bed A used for nursing care or the like in a hospital or home can be attached with a side rail B as shown in FIG. 9 in order to prevent the futon from falling off and the patient from falling. The side fence B includes a fixed fence 1 fixedly attached to a side frame 23 provided on a side portion of the main body 22 of the bed A, and a rotating fence 6 provided at one end of the fixed fence 1 so as to be horizontally rotatable. And is formed from. 9 (a) to 9 (a) so that the rotating fence 6 can be used as a handrail to be grasped when the patient ascends and descends the bed A so as not to interfere with the patient ascending and descending the bed A. As shown in b), it can be rotated horizontally.

  In order to use the rotating fence 6 as a handrail, it is necessary to fix the rotating fence 6 at a position horizontally rotated by a predetermined angle. For this reason, conventionally, the rotating fence 6 is fixed so as not to rotate by tightening the lever, and the rotating fence 6 can be freely horizontally rotated by loosening the lever ( For example, see Patent Document 1).

  However, in the system in which the rotating fence 6 is fixed by tightening the lever as described above, a strong force is required for lever operation. If the lever is not sufficiently tightened, the rotating fence 6 easily rotates. When using the rotating fence 6 as a handrail, the rotating fence 6 may move unexpectedly. Therefore, the lever system is not suitable for operation by patients who are physically handicapped and weak.

  There is also a method of fixing the rotating fence 6 by tightening a screw. In this case as well, a strong force is required for tightening the screw. If the tightening is insufficient, the rotating fence 6 can be easily rotated. There is a danger of moving. In particular, it cannot be operated on patients whose fingertips are not freely used.

  Therefore, a dropping method, which is not a method of fixing the rotating fence 6 by such tightening, has been studied. The dropping method uses a fitting means. By pulling up the rotating fence 6, the fitting means can be disengaged and the rotating fence 6 can be freely rotated horizontally. When the fence 6 is lowered and dropped, the fitting means is fitted and the rotating fence 6 is fixed (the fitting receiving member 5 in FIGS. 1A and 1C described later). And the mechanism of the fitting means comprising the fitting member 9).

In this drop-in method, it is possible to rotate horizontally by simply lifting the rotating fence 6, so that even a patient who has weak force and cannot freely use the fingertips can easily operate, and the rotating fence 6 is lowered. The rotating fence 6 can be fixed in a non-rotating state simply by dropping it, and the danger of the rotating fence 6 moving when the rotating fence 6 is used as a handrail can be reduced. is there.
JP 2003-52763 A

  However, in the case of the dropping method described above, the rotating fence 6 is lowered and dropped so that the fitting means is fitted and the rotation of the rotating fence 6 is fixed. When the fence 6 is gripped as a handrail, the fitting means may be disengaged if the rotating fence 6 is accidentally pulled up due to body movement or the like. It was a thing.

  The present invention has been made in view of the above points, and can be rotated by pulling up the rotating fence and fixed at a position rotated by a predetermined angle by lowering the rotating fence. In addition, an object of the present invention is to provide a rotation lock mechanism for a variable angle rotation fence that can prevent the rotation fence from being lifted and rotated even if a force for pulling the rotation fence is accidentally applied. It is what.

The rotation lock mechanism of the variable angle rotation fence according to claim 1 of the present invention includes a receiving cylinder 2 having an upper end opening fixed to the fixed fence 1, and a plurality of concave portions 3 and a protrusion fixed to the upper surface of the receiving cylinder 2. The fitting receiving members 5 in which the portions 4 are alternately formed in the circumferential direction, and a plurality of convex portions 7 fixed to the rotating fence 6 and engageable with the concave portions 3 and the convex portions 4 of the fitting receiving member 5 on the lower surface. And fitting members 9 in which recesses 8 are alternately formed in the circumferential direction. The fitting members 9 are inserted into the upper end portion of the tube 2 so as to be vertically movable and horizontally rotatable so as to rotate. The receiving member 2 is supported, and the fitting member 9 is moved downward so that the concave portion 3 and the convex portion 4 of the fitting receiving member 5 are engaged with the convex portion 7 and the concave portion 8 of the fitting member 9. The horizontal rotation of the fence 6 is disabled, and the fitting member 9 is moved upward to remove the fitting of the convex portion 7 and the concave portion 8 of the fitting member 9 from the concave portion 3 and the convex portion 4 of the fitting receiving member 5. In state In the rotation lock mechanism of the variable angle rotation fence that makes the moving fence 6 horizontally rotatable, the engagement cylinder 9 moves up and down and horizontally in accordance with the vertical movement and horizontal rotation of the fitting member 9. The fitting 10 is connected to the fitting member 9, and the engagement tool 10 in a state where the projection 7 and the depression 8 of the fitting member 9 are fitted to the depression 3 and the projection 4 of the fitting receiving member 5. An engagement hole 11 that opens inward and outward is formed in the side surface of the receiving tube 2 at a position above the position, and an operation lever 12 is provided on the outer surface of the receiving tube 2 and is received from the engagement hole 11 by operating the operation lever 12. projecting the engaging claw 13 to be out in the cylinder 2 to the operating lever 12, the tip portion of the engaging claws 13 pledged to receiving cylinder 2 from the engagement hole 11 of the lower turned position engaging member 10 of the It is characterized by being positioned above.
Further, the upper movement restricting portion 16 whose lower surface is the upper movement restricting / engaging surface 15 in the receiving cylinder 2 and the left and right side surfaces at the positions below the upper movement restricting / engaging surface 15 are the rotation restricting / engaging surfaces, respectively. 17 is provided, and the engagement tool 10 is disengaged from the concave portion 3 and the convex portion 4 of the fitting receiving member 5 to disengage the convex portion 7 and the concave portion 8 of the fitting member 9 from each other. The upper surface is brought into contact with and locked to the upper movement restricting locking surface 17 of the upper movement restricting portion 16 at the upper moving position of the joint tool 10, and both side surfaces are rotated at the rotation position of the engaging tool 10 at a predetermined angle. A locking piece 19 is provided to be brought into contact with and locked to the rotation regulating locking surface 17 of the movement regulating portion 18.

According to this invention, the fitting of the convex portion 7 and the concave portion 8 of the fitting member 9 from the concave portion 3 and the convex portion 4 of the fitting receiving member 5 is performed by lifting the rotating fence 6 and moving the fitting member 9 upward. The pivoting fence 6 can be freely pivoted horizontally, and the pivoting fence 6 is lowered to move the fitting member 9 downward, whereby the concave portion 3 and the convex portion of the fitting receiving member 5 are removed. 4, the convex part 7 and the concave part 8 of the fitting member 9 can be fitted to each other, so that the rotating fence 6 can be fixed at a position rotated by a predetermined angle, and the operation lever 12 is operated. By inserting the engaging claw 13 into the receiving tube 2 from the engaging hole 11 and positioning it on the engaging tool 10 in the downward movement position, the engaging tool 10 engages with the engaging claw 13 and does not move up. Even if a force for pulling up the rotating fence 6 acts by mistake, the rotating fence 6 is pulled up and the fitting receiving member 5 Prevents the from Part 3 and the convex portion 4 outside the fitting of the convex portion 7 and concave portion 8 of the engaging member 9, Kaidosaku 6 is what can be reliably held in a fixed state without rotating.
Further, according to the present invention, the locking member 19 provided on the engaging tool 10 is locked to the upward movement restricting / engaging surface 15 of the upward movement restricting portion 16, thereby restricting the upward movement position of the fitting member 9. In addition, it is possible to prevent the fitting member 9 from being removed from the receiving cylinder 2 and the turning fence 6 from being removed from the fixed fence 1, and the locking piece 19 is locked to the turning restriction locking surface 17 of the turning restriction portion 18. By doing so, the rotation angle of the fitting member 9 can be restricted and the rotation fence 6 can be prevented from being rotated too much. The moving angle can be regulated simultaneously.

  Further, the invention according to claim 2 is the rotation according to claim 1, wherein the operation lever 12 is pivotably attached to the outer surface of the receiving cylinder 2 and the engaging claw 13 is inserted into the receiving cylinder 2 from the engaging hole 11. The operation lever 12 is urged to rotate in the direction by the elastic body 14.

  According to the present invention, the engaging claw 13 can be held by the urging force of the elastic body 14 in a state where the engaging pawl 13 is engaged with the engaging tool 10 and the rotating fence 6 is not lifted. The rotating fence 6 can be reliably held in a fixed state where it does not rotate. In addition, by rotating the operation lever 12 in the direction opposite to the urging direction by the elastic body 14, the engagement claw 13 can be disengaged from the engagement tool 10, and the rotation fence 6 can be rotated. The operation of pulling up can be easily performed.

  The invention of claim 3 is characterized in that, in claim 2, the operating lever 12 is vertically arranged along the receiving tube 2 and is swingable and rotatable in the vertical direction.

  According to the present invention, the operation lever 12 does not protrude from the receiving tube 2 to the side, and does not get in the way, and the operation direction of the operation lever 12 is vertical. Thus, there is no left and right hand, and it becomes easy to operate.

The tilting times Dosaku according to claim 4 of the present invention comprises a fixed fence 1, tilting rotation with a Kaidosaku 6 mounted for horizontal rotation on the receiving cylinder 2 fixed to the fixed fence 1 The fence is provided with the rotation lock mechanism according to any one of claims 1 to 3 .

  According to this invention, even if the force which pulls up the rotation fence 6 accidentally acts, the angle variable rotation fence which can be reliably hold | maintained in the fixed state which the rotation fence 6 does not rotate can be provided. .

The bed according to claim 5 is characterized in that made in preparation for the angle side of the variable times Dosaku the bed body portion 22 of claim 4.

  According to the present invention, it is possible to provide a bed provided with a variable angle rotating fence as a side fence that can be held in a fixed state in which the rotating fence 6 does not rotate even if a force for pulling up the rotating fence 6 is applied by mistake. it can.

  According to the present invention, the fitting of the convex portion 7 and the concave portion 8 of the fitting member 9 from the concave portion 3 and the convex portion 4 of the fitting receiving member 5 is performed by lifting the rotating fence 6 and moving the fitting member 9 upward. The pivoting fence 6 can be freely pivoted horizontally, and the pivoting fence 6 is lowered to move the fitting member 9 downward, whereby the concave portion 3 and the convex portion of the fitting receiving member 5 are removed. 4, the convex portion 7 and the concave portion 8 of the fitting member 9 are fitted to each other, so that the rotating fence 6 can be fixed at a position rotated by a predetermined angle. Further, by operating the operating lever 12 to insert the engaging claw 13 into the receiving cylinder 2 from the engaging hole 11 and positioning it on the engaging tool 10 in the downward movement position, the engaging tool 10 engages with the engaging claw 13. Even if a force for pulling up the rotating fence 6 is applied by mistake, the rotating fence 6 is pulled up and the concave portion 3 and the convex portion 4 of the fitting receiving member 5 are engaged. Therefore, the fitting of the projection 7 and the recess 8 of the fitting member 9 can be prevented from being disengaged, and the rotating fence 6 can be securely held in a non-rotating state.

  Hereinafter, the best mode for carrying out the present invention will be described.

  FIG. 8 shows a side fence B formed by a variable angle rotating fence made up of a fixed fence 1 and a rotating fence 6, and the fixing plate 28 of the receiving tube 2 arranged vertically is connected to one end of the fixed fence 1. The side fence B is formed by fixing the end of the rotating fence 6 to the receiving tube 2 so as to be horizontally rotatable. A horizontal base 25 is provided at the lower end of the fixed fence 1 via a support column 24 and, as shown in FIG. 9, is fixed to the side portion of the main body portion 22 on which the bedding 26 such as a mattress of the bed A is laid. A fixing pin 27 protruding from the lower end of the horizontal base 25 is inserted into and fixed to the side frame 23, so that the side rail B is attached along the side portion of the bed A supported by the side frame 23. By attaching the side fence B formed by the angle variable turning fence to the side part of the bed A, it is possible to prevent the futons from falling off and the patient from falling.

  The receiving tube 2 is formed in a cylindrical shape that opens up and down, and a fixed plate 28 is attached to the outer surface of the upper portion thereof by welding or the like. As shown in FIG. 3A, a fitting receiving member 5 is fixedly attached in the upper part of the receiving tube 2. The fitting receiving member 5 is formed in a cylindrical shape provided with a through hole 30 that opens upward and downward in the center, and a concave portion 3 and a convex portion 4 are provided on the upper surface of the fitting receiving member 5. As shown in FIG. 3B, the recesses 3 and the protrusions 4 are provided in plural numbers so that the recesses 3 and the protrusions 4 are alternately repeated along the circumferential direction of the fitting receiving member 5. The side surfaces of the concave portion 3 and the convex portion 4 are formed as vertical surfaces. In the embodiment of FIG. 3B, the recesses 3 and the protrusions 4 are each formed with a phase angle of 45 °, for example.

  As shown in FIG. 3A, a cylindrical regulating cylinder 31 is fixedly provided in the center of the receiving cylinder 2 at the lower side of the fitting receiving member 5. The rotation restricting portion 18 protrudes downward from the lower edge of the restricting cylinder 31 on the side where the fixing plate 28 exists, and as shown in FIG. Is the rotation restricting / holding surface 17. Further, the lower end portion of the restriction cylinder 31 other than the rotation restriction portion 18 becomes the upper movement restriction portion 16, and the lower surface of the upper movement restriction portion 16, that is, the lower end surface of the restriction tube 31 other than the rotation restriction portion 18 is the upper side. The movement regulating locking surface 15 is provided.

  Further, in the position opposite to the fixing plate 28 of the receiving tube 2, the central portion of the receiving tube 2 is positioned below the fitting receiving member 5 and above the upper movement restricting portion 16 as shown in FIG. The engaging hole 11 is formed as shown in FIG. The engaging hole 11 is formed through the receiving cylinder 2 and the regulating cylinder 31 and is formed so as to open inside and outside the receiving cylinder 2. Further, a shaft support cylinder 32 is fixed to each of the upper and lower positions sandwiching the engagement hole 11 by welding or the like.

  In FIG. 1, reference numeral 34 denotes a cylindrical fixed boss, and a cylindrical rod-shaped shaft 35 projects integrally downward at the center of the lower surface of the fixed boss 34. The fitting member 9 is formed in a cylindrical shape having the same diameter as the fitting receiving member 5 described above, and is inserted into the shaft 35 and fixed to the lower surface of the fixed boss 34. On the lower surface of the fitting member 9, a convex portion 7 and a concave portion 8 are provided. A plurality of the convex portions 7 and the concave portions 8 are provided in the same number as the concave portions 3 and the convex portions 4 of the fitting receiving member 5 so that the convex portions 7 and the concave portions 8 are alternately repeated along the circumferential direction of the fitting member 9. The side surfaces of the convex portion 7 and the concave portion 8 are formed as vertical surfaces (see FIG. 2B).

  The shaft 35 is inserted into the receiving tube 2 through the through hole 30 of the fitting receiving member 5 and the fitting member 9 is inserted into the upper end portion of the receiving tube 2 above the fitting receiving member 5, thereby The fitting member 9 is movable up and down in the receiving tube 2 together with the shaft 35 and is rotatable in the horizontal direction. Here, the convex portion 7 of the fitting member 9 is substantially the same size as the concave portion 3 of the fitting receiving member 5, and the concave portion 8 of the fitting member 9 is substantially the same size as the convex portion 4 of the fitting receiving member 5. The protrusion 7 and the recess 8 of the fitting member 9 are fitted to the recess 3 and the protrusion 4 of the fitting receiving member 5 as shown in FIG. In addition, by moving the fitting member 9 upward, the fitting of the convex portion 7 and the concave portion 8 of the fitting member 9 can be removed from the concave portion 3 and the convex portion 4 of the fitting receiving member 5. It is like that. And since the recessed part 3 and the convex part 4 of the fitting receiving member 5 and the convex part 7 and the recessed part 8 of the fitting member 9 are formed with the phase angle of 45 degrees, it is a fitting member with respect to the fitting receiving member 5 9 can be fitted in a state of being rotated every 45 °.

  As shown in FIGS. 4 (a) and 4 (b), the engaging tool 10 is formed in a bottomed cylindrical shape whose upper surface is open, and has an outer diameter substantially equal to the inner diameter of the restriction cylinder 31. . A fixing hole 37 is formed in the center of the bottom surface of the engaging tool 10, and a vertically protruding key 38 is formed at one place on the inner periphery. Further, a locking piece 19 is provided so as to protrude outward at one place on the outer periphery of the lower end of the engaging tool 10, and the protruding dimension of the locking piece 19 is formed substantially equal to the thickness of the regulation cylinder 31. A screw hole 39 is recessed in the lower end surface of the shaft 35, and a key groove 40 is recessed in the side surface of the lower end portion of the shaft 35. Then, as shown in FIG. 1, the engaging tool 10 is inserted into the lower end of the shaft 35 and fitted, and the bolt 41 passed through the fixing hole 37 is screwed into the screw hole 39, whereby the engaging tool 10 is attached to the shaft 35. It is fixed to the lower end. At this time, the engagement tool 10 is prevented from idling around the outer periphery of the shaft 35 by the engagement of the key 38 with the key groove 40 of the shaft 35.

  As shown in FIG. 4 (c), the operation lever 12 has a shaft boss 43 protruding from the inner central portion which is a concave surface of the lever body 42 having a horizontal cross section curved in an arc shape, and is engaged with the shaft boss 43. It is formed by projecting the claws 13 integrally. As shown in FIG. 2A, the operation lever 12 is disposed on the side surface of the receiving tube 2 between the upper and lower shaft support tubes 32, 32, and the shaft 45 is inserted into the shaft boss 43 in the vertical direction and rotated. By inserting the upper end and the lower end of the shaft 45 into the upper and lower shaft support cylinders 32, 32, the operation lever 12 is pivotably mounted in the horizontal direction around the rotation shaft 45. . At this time, the tip of the engaging claw 13 can be inserted into and removed from the receiving tube 2 through the engaging hole 11 by swinging and rotating the operation lever 12. An elastic body 14 formed of a spring or the like is attached to the rotation shaft 45, and one end and the other end of the elastic body 14 are brought into elastic contact with the inner surface of the lever main body 42 of the operation lever 12 and the outer surface of the receiving cylinder 2, respectively. In this manner, the operating lever 12 is urged to rotate by the elastic body 14 so that one side end of the lever main body 42 contacts the outer surface of the receiving cylinder 2. The rotation biasing direction of the operation lever 12 by the elastic body 14 is set to a direction in which the engaging claw 13 is inserted into the receiving cylinder 2 as shown in FIG. The other side end of the lever main body 42 serves as an operation portion 44. By pushing the operation portion 44 and rotating the operation lever 12 against the force of the elastic body 14, the lever shown in FIG. In this way, the engaging claw 13 is pulled out from the receiving cylinder 2.

  The rotating fence 6 is formed by a pipe in a shape lacking a part of a square shape. One end of the rotating fence 6 is formed on the outer periphery of the fixed boss 34 protruding upward from the upper end of the receiving cylinder 2. It is attached by fitting and fixing the parts. Here, the shaft 35 inserted into the receiving tube 2 has an upper end fitting member 9 along the inner periphery of the upper end of the receiving tube 2, and a lower end engaging tool 10 being the inner periphery of the regulating tube 31. Are rotated horizontally along the horizontal axis of the receiving cylinder 2, and the rotating fence 6 can be supported by the cylinder 2 so as to be horizontally rotatable by the shaft 35. is there.

  In the side fence B formed as described above, when the rotation fence 6 is fixed to the fixed fence 1 at an angle that makes a straight line as shown in FIG. And can prevent futons from falling off and patients from falling. Further, when the rotating fence 6 is fixed at a predetermined angle with respect to the fixed fence 1 as shown in FIG. 9B, the rotating fence 6 does not get in the way when the patient goes up and down on the bed A. In addition, the rotating fence 6 can be used as a handrail to be grasped when the bed A rises and falls.

  Here, FIGS. 1A and 1B show the state of the mechanism when the rotating fence 6 is fixed so as not to rotate horizontally (the illustration of the operation lever 12 is omitted in FIG. 1A). The fitting member 9 moves down in the receiving cylinder 2 due to its own weight or the like of the rotating fence 6, and the convex portion 7 and the concave portion of the fitting member 9 are moved into the concave portion 3 and the convex portion 4 of the fitting receiving member 5. 8 is fitted, and the fitting member 9 cannot horizontally rotate. Since the fixed boss 34 fixing the rotating fence 6 is integral with the fitting member 9 via the shaft 35, the rotating fence 6 can be set in a fixed state in which the rotating fence 6 is not horizontally rotated.

  When the fitting member 9 is fitted to the fitting receiving member 5 as described above, the shaft 35 is also moved downward together with the fitting member 9, and the engaging tool 10 at the lower end of the shaft 35 is also moved downward. In the position. In this way, at the position where the engaging tool 10 is moved downward, the upper end surface of the engaging tool 10 is set to be substantially the same height as the lower end edge of the engaging hole 11 of the receiving tube 2, and FIG. The tip of the engaging claw 13 of the operating lever 12 inserted into the receiving cylinder 2 from the engaging hole 11 is directly above the upper end surface of the engaging tool 10 as shown by a chain line in FIG. Close to and opposite. Here, for example, even if a force for inadvertently pulling up the rotating fence 6 is applied, the upper end surface of the engaging tool 10 is engaged with the engaging claw 13 of the operating lever 12, so that the shaft 35 and the fitting member 9 are The rotating fence 6 is not lifted up. Therefore, the projection 7 and the recess 8 of the fitting member 9 are not disengaged from the recess 3 and the projection 4 of the fitting receiving member 5, and the state in which the fitting member 9 does not rotate horizontally is maintained. It is possible to prevent the moving fence 6 from rotating carelessly.

  In this way, the tip of the engaging claw 13 of the operating lever 12 is inserted into the receiving tube 2 from the engaging hole 11 and engaged with the engaging tool 10, whereby the rotating fence 6 is inadvertently lifted. However, the state in which the engaging claw 13 of the operating lever 12 is engaged with the engaging tool 10 is that the operating lever 12 is urged to rotate by the elastic body 14. It is held and can prevent the engagement state of the engagement claw 13 with respect to the engagement tool 10 from being inadvertently removed, and the rotation fence 6 is prevented from being inadvertently lifted and rotated. The locked state can be reliably held.

  Next, FIGS. 1C and 1D show the state of the mechanism when the rotating fence 6 is rotated at a predetermined angle (the operation lever 12 is not shown in FIG. 1C). First, the operating portion 44 of the operating lever 12 is pushed as shown by the arrow in FIG. 1D to rotate the operating lever 12 against the elastic body 14 and pull the engaging claw 13 out of the cylinder 2. The engagement state of the engagement claw 13 with respect to the engagement tool 10 is released. Then, when the rotating fence 6 is pulled up with the operation lever 12 being rotated as described above, the fitting member 9 is moved up together with the shaft 35, and the fitting receiving member is moved as shown in FIG. 5 is disengaged from the projection 7 and the recess 8 of the fitting member 9 with respect to the recess 3 and the projection 4. Thus, by removing the fitting of the fitting member 9 with respect to the fitting receiving member 5, the shaft 35 can be rotated horizontally together with the fitting member 9, so that the turning fence 6 can be turned horizontally. It can be done.

  Here, when the rotating fence 6 is moved upward to move the shaft 35 together with the fitting member 9, the upper surface of the locking piece 19 of the engaging tool 10 at the lower end of the shaft 35 is as shown in FIG. The upper end of the upper movement restricting portion 16 at the lower end of the restricting cylinder 31 is brought into contact with and locked to the upper movement restricting surface 15, and the shaft 35 is restricted from further upward movement. Therefore, it is possible to prevent the shaft 35 from being removed from the receiving tube 2 and the rotating fence 6 from being dropped from the receiving tube 2. Further, when the rotating fence 6 is horizontally rotated, the shaft 35 and the engaging tool 10 at the lower end thereof are also horizontally rotated along with the rotation of the rotating fence 6. As shown by a chain line in FIG. 2 (c), the side end surface of this is in contact with and locked against the rotation restricting / engaging surface 17 of the rotation restricting portion 18 of the restricting cylinder 31, and further rotation is restricted. The Therefore, the rotation angle of the rotation fence 6 can be regulated within a predetermined range (in the embodiment shown in the drawing, a range of 180 °), and the rotation fence 6 is turned to an angle that cannot be used as a handrail. It is possible to prevent such things from passing.

  Then, after the rotating fence 6 is horizontally rotated at a predetermined angle as described above, when the force for lifting the rotating fence 6 is released, the rotating fence 6 is lowered by its own weight and the fitting member 9 is moved downward. Returning to the state of FIG. 1A in which the convex portion 7 and the concave portion 8 of the fitting member 9 are fitted to the concave portion 3 and the convex portion 4 of the fitting receiving member 5, the angle at which the rotating fence 6 is rotated is returned. It can be fixed to. Further, when the shaft 35 moves downward together with the fitting member 9 and the engaging tool 10 at the lower end thereof is lowered below the position of the engaging claw 13, the operating lever 12 is rotated by the urging force of the elastic body 14. Then, the engagement claw 13 returns to the state of being engaged with the engagement tool 10. In the above embodiment, since the fitting member 9 can be fitted to the fitting receiving member 5 in a state of being rotated every 45 °, the rotating fence 6 is rotated every 45 °. It can be fixed in a moved state.

  Here, in the above-described embodiment, the operation lever 12 is formed in a horizontally long shape and is disposed in a horizontal direction perpendicular to the axial direction of the receiving tube 2, and can swing and rotate horizontally around a vertical rotation shaft 45. It is. On the other hand, in the embodiment shown in FIGS. 5 to 7, the operation lever 12 is formed in a vertically long shape as shown in FIG. An engaging claw 13 is provided on the rear surface of the lower end portion of the operation lever 12, an operation portion 44 is formed on the surface side of the upper end portion of the operation lever 12, and the rear surface of the upper end portion of the operation lever 12. A receiving recess 51 is formed on the side. As shown in FIG. 5, a pair of bearing pieces 52 project from the outer peripheral surface of the receiving cylinder 2 above the engagement hole 11, and a holding projection 53 projects from the upper side of the bearing piece 52. Then, as shown in FIG. 5, the operation lever 12 is vertically arranged along the axial direction of the receiving cylinder 2, and the elastic body 14 formed by a spring such as a coil spring is held between the holding projection 53 and the receiving recess 51. In this state, the operation lever 12 is received by screwing the nut 54 horizontally through the rotation shaft 45 formed of a bolt through the left and right shaft holes 50 of the operation lever 12 and the shaft hole 52a of the bearing piece 52. It is designed to be attached to the cylinder 2. The operation lever 12 has a horizontal rotation shaft 45 as a center, and an upper end and a lower end of the operation lever 12 are swingable and turnable in a vertical direction approaching and separating from the receiving tube 2, that is, a vertical plane perpendicular to the horizontal rotation shaft 45 And can be swung freely.

  At this time, the receiving cylinder 2 is urged to rotate by the elastic body 14 in the direction in which the engaging claw 13 at the lower end is inserted into the receiving cylinder 2 from the engaging hole 11, and the engaging claw 13 as shown in FIG. 6. Is engaged with the engagement tool 10, and the locked state that prevents the rotating fence 6 from being inadvertently lifted and rotated is maintained. In order to release this locked state, the operation portion 44 at the upper end of the operation lever 12 is pushed as shown by the arrow C in FIG. 6, and the lower end of the operation lever 12 is moved as shown by the arrow D against the elastic body 14. The engaging claw 13 can be rotated and pulled out from the inside of the tube 2 to release the engaging state with respect to the engaging tool 10. Thus, the operation lever 12 is kept rotated. The rotating fence 6 can be pulled up and rotated horizontally.

  As described above, in the embodiment shown in FIGS. 5 to 7, the operation lever 12 is vertically arranged along the axial direction of the receiving cylinder 2 and is swingable and rotatable in the vertical direction. Therefore, the operating lever 12 is formed in a vertically long shape, and the lateral width of the operating lever 12 can be formed to be the same as or smaller than the diameter of the receiving tube 2, and the operating lever 12 is located on the side of the receiving tube 2. There will be no such thing as projecting far in the direction. For this reason, in the bed A that rotates so that a part of the bed main body portion 22 stands up like an electric bed, when the movable portion 22a of the bed main body portion 22 stands up and rotates, the side end of the movable portion 22a is The end of the operation lever 12 is not touched, and the operation lever 12 is not pushed and unlocked. Further, the operation of the operation lever 12 can be performed by swinging and turning in the vertical direction, and the left and right operation cannot be performed. Accordingly, the operability of the operation lever 12 can be improved without deteriorating operability even when the variable angle rotating fence according to the present invention is attached to the right side or the left side of the bed A as the side fence B. It is something that can be done. In the embodiment shown in FIGS. 1 and 5, a spring is used as the elastic body 14 that urges the operation lever 12 to rotate. However, a rotation urging force can be applied to the operation lever 14. Needless to say, the elastic body 14 is not limited to a spring but may be anything.

  In addition to being used for the side fence B of the bed A as in the above embodiment, the variable angle turning fence according to the present invention can be used by pulling up and turning the movable fence such as a horizontally turning gate and lowering it. The present invention can be used for various device mechanisms that are fixed at a predetermined angle.

BRIEF DESCRIPTION OF THE DRAWINGS It shows a part of example of embodiment of this invention, (a) is front sectional drawing which fractured | ruptured partially showing the fixed state which does not rotate a rotation fence, (b) is a (C) is a partially broken front sectional view showing a release state in which the rotating fence can be rotated, and (d) is a sectional view of the roll line portion of (c). is there. (A) is a front view of the receiving cylinder part same as the above, (b) is a sectional view of the fitting receiving member and the fitting member of the ha ha line part of FIG. 1 (a), and (c) is FIG. 1 (a). It is sectional drawing of a knee line part. (A) is front sectional drawing of a receiving cylinder same as the above, (b) is a top view of a receiving cylinder part same as the above, (c) is a bottom view of a receiving cylinder part. (A) is a top view of an engaging tool, (b) is front sectional drawing of an engaging tool, (c) is a top view of an operation lever. It is a partial exploded perspective view which shows an example of other embodiment of this invention. It is a fragmentary sectional view same as the above. The operation lever same as the above is shown, (a) is a front view, (b) is a side sectional view, and (c) is a rear view. It is a front view which shows the whole side fence. (A), (b) is a perspective view of the state which attached the side fence to the bed, respectively.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fixed fence 2 Receiving cylinder 3 Concave part 4 Convex part 5 Fitting receiving member 6 Rotating fence 7 Convex part 8 Concave part 9 Fitting member 10 Engagement tool 11 Engagement hole 12 Operation lever 13 Engagement claw 14 Elastic body 15 Upward movement Restriction locking surface 16 Upward movement restriction portion 17 Rotation restriction engagement surface 18 Rotation restriction portion 19 Locking piece

Claims (5)

A receiving cylinder with an upper end opening fixed to the fixed fence, a fitting receiving member fixed in the receiving cylinder and having a plurality of concave and convex portions alternately formed in the circumferential direction on the upper surface, and a lower surface fixed to the rotating fence A plurality of protrusions and engagement members in which recesses are engageable with the recesses and protrusions of the fitting receiving member, and the engagement members are alternately formed in the circumferential direction; Inserted in a horizontal direction so as to be pivotable and supported on a receiving cylinder by a pivoting fence. The fitting member is moved downward to fit the convex and concave portions of the fitting member into the concave and convex portions of the fitting receiving member. In the state where the horizontal rotation of the rotating fence is disabled and the fitting member is moved upward in the state where the fitting is made, and the fitting and the concave portion of the fitting member are removed from the concave and convex portions of the fitting receiving member. In the rotation lock mechanism of the variable angle rotation fence that allows the rotation fence to rotate horizontally, in the receiving cylinder according to the vertical movement and horizontal rotation of the fitting member A position of the engagement tool in a state in which the engagement tool that moves up and down and horizontally rotates is connected to the fitting member, and the protrusion and the depression of the fitting member are fitted to the depression and the protrusion of the fitting receiving member. An engagement hole that opens inward and outward is formed in the side surface of the receiving tube at a higher position, an operation lever is provided on the outer surface of the receiving tube, and an operation lever is operated to move the engagement hole into and out of the receiving tube. projecting the pawl to the operating lever, Ri formed by the tip portion of the engaging claw pledged to receive cylinder from engagement hole so as to position on the engaging member of the downward movement position,
An upper movement restricting portion whose lower surface is an upper movement restricting locking surface in the receiving tube, and a rotation restriction whose left and right side surfaces are respectively rotation restricting locking surfaces at a position below the upper movement restricting locking surface. And the upper surface of the engaging tool is above the upper movement restricting portion at the upward movement position of the engaging tool where the fitting and the concave part of the fitting member are disengaged from the concave and convex parts of the fitting receiving member. A lock that contacts and locks against the movement restricting locking surface, and the side surfaces on both sides come into contact with and lock against the rotation restricting locking surface of the rotation restricting portion at the rotation position of the engagement tool at a predetermined angle. A rotation lock mechanism for a variable angle rotation fence, characterized by comprising a stop piece .   An operation lever is attached to the outer surface of the receiving cylinder so as to be swingable and rotatable, and the operating claw is urged by an elastic body in a rotating direction in which the engaging claw is inserted into the receiving cylinder from the engaging hole. The rotation lock mechanism of the angle variable rotation fence according to claim 1.   The rotation lock mechanism of the variable angle rotation fence according to claim 2, wherein the operation lever is vertically arranged along the receiving cylinder and is swingable and rotatable in the vertical direction. An angle-variable rotating fence comprising a fixed fence and a rotating fence that is attached to a receiving cylinder fixed to the fixed fence so as to be horizontally rotatable. The rotating lock mechanism according to any one of claims 1 to 3. A variable-angle rotating fence characterized by comprising A bed comprising the variable angle rotating fence according to claim 4 on the side of the bed main body.

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