JP2005256896A - Support device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a support device capable of rotating a rod or a tube to a predetermined position when a piston is placed at a moving end and limiting relative rotation of the rod and the tube while the piston is moving. <P>SOLUTION: The support device has the tube 11, the piston 12, the rod 16, engaging pins 20, 21 protruding from an inner face of the tube, an engaging member 17 capable of being irrotational relative to the rod and capable of moving in an axial direction, a plurality of engaging grooves 27a, b, provided for the engaging member in the axial direction, for fitting the engaging pins, an energizing member 28 for energizing the engaging member to a piston side, a plurality of communication grooves 23a, b provided on an outer peripheral face of the piston in the axial direction and an engaging peripheral groove 22 for extending in a peripheral direction continuing to the communication groove. The device is structured so that the engaging member is pressed by the piston, resisting energizing force of the energizing member at a stroke end, and the engaging pin comes off from the engaging groove, fits in the communication groove and then fits in the engaging peripheral groove. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a support device that has a rod or a tube integrated with a piston member that can slide on the inner peripheral surface of a tube and supports a chair or the like that conveys a person or an object.

  Traditionally, nursing lifts that transport these caregivers between a washroom and a bathtub in the bathroom are often used to assist bathing for elderly people and people with reduced mobility who are difficult to walk on their own. It is used. And in order to make the factor of electrical troubles, such as an electric leakage and an electric shock, zero, the nursing care lift which used the hydraulic cylinder device by the hydraulic pressure for the raising / lowering is also proposed (patent document 1).

  In the care lift of the bathing care apparatus in Patent Document 1, the lifting device is configured to move the outer cylinder up and down by the fluid pressure cylinder device along a support column erected on the floor of the bathroom. A bracket that is pivotable in the horizontal direction is attached to the outer cylinder of the lifting device, and a pivot arm for moving the care recipient is attached via the bracket.

Therefore, for example, in a washing place, a cared person is placed on a wheel attached to the swivel arm, and is raised by the fluid pressure cylinder device. The cared person is moved into the bathtub by being moved down by the fluid pressure cylinder device at that position.
JP-A-8-33694

  However, in the lift for nursing care described in Patent Document 1, the caregiver must support the chair or the like so that the chair on which the care recipient is placed does not turn unexpectedly during the raising and lowering. In addition, when the swivel arm is swung between the washing area and the bathtub, the caregiver must take great care so that the swivel arm and the care recipient do not hit the wall surface due to excessive travel.

  Thus, in the conventional care lift, when the care recipient is transported, the raising and lowering operation and the turning operation are possible at any position, so that the turning arm and the care recipient do not hit the wall or the edge of the bathtub. At the same time, caregivers had to pay close attention and effort, which put a heavy burden on the caregivers.

  The present invention has been made in view of the above-mentioned problems. By applying the present invention to the care lift described above, it is possible to perform the up-and-down movement and the turning movement only at a predetermined position. An object of the present invention is to provide a support device capable of reducing the burden.

  The support device according to the present invention includes a tube member, a piston member that is slidable along an inner peripheral surface of the tube member, a rod that is connected to and integrated with the piston member, and the rod penetrates the tube member, A locking pin protruding from the inner peripheral surface of the tube member, a locking member provided so as not to be rotatable in the circumferential direction and movable in the axial direction with respect to the rod, and provided in the locking member; A plurality of locking grooves for locking the tube member so as not to rotate relative to each other when the pin is fitted from the axial direction, and the locking member is provided in the locking groove. A biasing member that biases in a direction to be fitted into the piston member, and an outer peripheral surface of the piston member provided at a position corresponding to at least a relative rotation angle position of the plurality of locking grooves, and the locking pin is provided in one axial direction Fit from A plurality of connecting grooves capable of being connected to the plurality of connecting grooves on the outer peripheral surface of the piston member so as to be movable in the circumferential direction, A locking circumferential groove that is locked so as not to be movable in the axial direction at a position excluding the connecting groove, and the locking member resists the biasing force of the biasing member at one stroke end. By being pushed by the piston member, the locking pin comes out of the locking groove, and the locking pin fits into the communication groove and further fits into the locking circumferential groove.

  In the supporting device, preferably, one locking pin is configured to be movable over the locking groove, the communication groove, and the locking circumferential groove.

  In another support device according to the present invention, the locking pin includes a first locking pin and a second locking pin, and the first locking pin fits into the locking groove, The second locking pin is configured to be able to fit into the communication groove and the locking circumferential groove.

  In another support device according to the present invention, a stopper pin is provided to stop the movement of the piston member and the tube member in the middle of a stroke protruding from the outer peripheral surface of the rod. A cover member having a hole through which the rod can be inserted is provided in the portion, and the cover member has the locking pin fitted in at least one of the plurality of locking grooves. An insertion hole is provided that allows the stopper pin to be inserted, and an insertion hole that prevents the stopper pin from being inserted when the locking pin is fitted in at least one of the plurality of locking grooves. Is provided with an insertion portion through which the stopper pin can be inserted.

  In the support device, preferably, the urging member is a compression spring, and the compression spring is mounted between the cover member and the locking member.

  In another supporting device that operates with a pressurized fluid according to the present invention, a cylinder chamber is provided on the opposite side of the tube member from the side on which the locking member is provided, and the cylinder chamber has a pressurized fluid. Is configured to generate a driving force for relatively moving the piston member and the tube member in the axial direction.

  It is possible to provide a support device that can perform up-and-down movement and turning movement only at a predetermined position and can reduce the burden on the caregiver in the care lift.

  1 is a front sectional view of a fluid pressure cylinder device 1 according to the present invention, FIG. 2 is a plan view of the fluid pressure cylinder device 1 provided in a bathroom 2, and FIG. 3 is a fluid pressure with a cylinder tube 11 in the vicinity of a descending end. 4 is a front partial sectional view of the cylinder device 1, FIG. 4 is a front partial sectional view of the fluid pressure cylinder device 1 in which the cylinder tube 11 is in the vicinity of the rising end, and FIG. 6 is a partial front sectional view of the fluid pressure cylinder device 1 with the cylinder tube 11 in the intermediate stop position, FIG. 7 is a perspective view of the piston 12, FIG. 8 is a perspective view of the guide member 17, and FIG. 5 is a cross-sectional view taken along arrow AA in FIG. 5, FIG. 10 is a cross-sectional view taken along arrow BB in FIG. 5, and FIG.

  4 and 5, until the cylinder tube 11 reaches the rising end, the cylinder tube 11 is restricted from turning by the engagement of the second pin 21 and the engaging groove 27a (FIG. 4), and reaches the rising end. This shows a state (FIG. 5) in which the cylinder tube 11 can turn for the first time.

  1 to 6, the fluid pressure cylinder device 1 lifts and lowers the cylinder tube 11 with tap water in the bathroom 2, and transports a chair 31 or the like on which a person (caregiver) is placed between the washing place 32 and the bathtub 33. Is to do. The fluid pressure cylinder device 1 moves up and down at two swiveling positions: a first swiveling position PL1 where the chair 31 is moved up and down in the bathtub 33 and a second swiveling position PL2 where the chair 31 is moved up and down at the washing place 32. At the first turning position PL1, the cylinder tube 11 moves up and down between its descending end and ascending end. At the second turning position PL2, the washing area 32 is located slightly higher than the bathtub 33, so that it is above the descending end. It moves up and down between the intermediate stop position and the rising end.

  The fluid pressure cylinder device 1 includes a cylinder tube 11, a piston 12 that slides in the cylinder tube 11, an upper cylinder cover 13 and a lower cover 14 provided at both ends of the cylinder tube 11, and an upper rod 15 that is integrated with the piston 12. And a lower rod 16 (hereinafter, the “upper rod 15” and the “lower rod 16” may be collectively referred to as “rod”), and a guide member 17 provided between the lower cover 14 and the piston 12. Composed. In the fluid pressure cylinder device 1, the lower fixing member 18 integrated with the lower rod 16 is in contact with the floor surface of the bathroom 2, and the plurality of push rods 34 a to 34 c integrated with the upper rod 15 extend radially. By pressing the pillar of the bathroom 2, it is fixed vertically to the floor surface of the bathroom 2.

  That is, the fluid pressure cylinder device 1 is a double rod type cylinder device in which both rods are fixed to the bathroom 2, and the cylinder tube 11 is raised or lowered when the piston 12 slides on the inner peripheral surface of the cylinder tube 11. To do.

  The upper end of the cylinder tube 11 is closed by the upper cylinder cover 13 and forms a cylinder chamber 19 together with the upper rod 15. Below the cylinder tube 11, a first pin 20 and a second pin 21 each having one end protruding inward of the cylinder tube 11 are provided side by side in the axial direction with the first pin 20 facing up. The interval between the first pin 20 and the second pin 21 is equal to the interval between the release groove 26 and the locking groove 22 when the piston 12 abuts on the guide member 17 (see FIG. 5). The guide member 17, the release groove 26, and the locking groove 22 will be described later. The first pin 20 and the second pin 21 are for the former to restrict the axial movement of the cylinder tube 11 with respect to the piston 12 and for the latter to restrict the turning of the cylinder tube 11 with respect to the guide member 17. A support member 35 for supporting a chair 31 on which a person is placed is fixed to the cylinder tube 11. The first pin 20 and the second pin 21 are fixed to the cylinder tube 11 with screws after the cylinder tube 11, the piston 12 and the guide member 17 are assembled. The cylinder tube 11 has a large-diameter portion 111 in which the diameter of the inner peripheral surface is increased at the lower end, and the other inner peripheral surface having a small diameter between the first pin 20 and the second pin 21. A locking end 112 is formed by the large diameter portion 111.

  Referring to FIG. 7, the piston 12 has an engagement groove 22 that forms an arc of about 100 degrees with respect to the axial center in the circumferential direction of the outer periphery thereof, and an end surface on the lower rod 16 side in the axial direction from both ends of the engagement groove 22. Guide grooves 23a, b are provided. The guide grooves 23a, b guide the first pin 20 to the locking groove 22, and the locking groove 22 locks the first pin 20 between the guide grooves 23a, b so as not to move to the lower rod 16 side. The locking groove 22 also serves to guide the first pin 20 and turn the cylinder tube 11 about the piston 12 by 100 degrees. An annular packing groove 121 for fitting the packing is provided on the outer periphery of the piston 12. A communication passage 122 that connects the inner space 161 of the lower rod 16 and the cylinder chamber 19 is formed inside the piston 12.

The upper cylinder cover 13 penetrates the upper rod 15 so as to be rotatable and movable in a state where the upper rod 15 is sealed.
The upper cylinder cover 13 is provided with an air vent 152 that communicates between the cylinder chamber 19 and the outside, and is normally closed by a plug.

  9 and 11, the lower cover 14 is provided with a hole 24 through which the lower rod 16 can freely move and relatively rotate. A part of the hole 24 is a notch groove 241, and the width thereof is larger than the width of the stopper 25 provided in the lower rod 16. The notch groove 241 is for allowing the lower rod 16 to pass through the lower cover 14 only when the position thereof overlaps with the stopper 25 when viewed from the direction of arrow AA in FIG.

  The upper rod 15 is hollow, and an upper rod cover 151 that connects push rods 34a to 34c (see FIG. 2) for fixing the fluid pressure cylinder device 1 to the column of the bathroom 2 is provided. .

  The lower rod 16 is fixedly integrated with the piston 12. As well shown in FIGS. 9 and 11, the lower rod 16 has a square cross-sectional shape and is hollow inside. A rectangular parallelepiped stopper 25 is provided at a predetermined position on one of the outer peripheral surfaces 165a to 165d. The stopper 25 is for engaging with the lower cover 14 to stop the cylinder tube 11 at that position when the cylinder tube 11 is in the second turning position PL2. A lower rod cover 162 is provided at the lower end of the lower rod 16 and is integrated with the lower fixing member 18. A supply / discharge path 164 connected to the inner space 161 of the lower rod 16 passes through the lower rod cover 162. The supply / exhaust passage 164 is open at the end of the supply / exhaust port 163. The tap water is guided from the supply / discharge port 163 to the cylinder chamber 19 via the supply / discharge path 164, the inner space 161, and the communication path 122 to raise the cylinder tube 11. Further, when the cylinder tube 11 is lowered, the water in the cylinder chamber 19 is discharged from the supply / discharge port 163 to the outside. A foot valve (not shown) for switching between raising and lowering of the cylinder tube 11 and a speed controller (not shown) for adjusting the lowering speed of the cylinder tube 11 are connected to the supply / discharge port 163.

  Referring to FIG. 8, guide member 17 has a substantially cylindrical outer shape. On the outer periphery of the guide member 17, there are a release groove 26 that draws an arc of about 100 degrees in the circumferential direction, and two engagement grooves 27 a and b that have a predetermined length from both ends of the release groove 26 toward the lower cover 14 in the axial direction. Is provided. The angle formed by the two engagement grooves 27a, b around the axis is equal to the angle formed by the two guide grooves 23a, b of the piston 12 around the axis. The engaging grooves 27a and 27b engage with the second pin 21 in the circumferential direction to prevent the cylinder tube 11 from turning with respect to the rod at the intermediate position and the lower end, and the release groove 26 guides the second pin 21. Thus, the cylinder tube 11 is rotated 100 degrees. The two engaging grooves 27a and 27b are provided on the outer periphery of the guide member 17 so as to be positioned on the extension lines in the axial direction of the guide grooves 23a and b in the cylinder tube 11, respectively.

  The guide member 17 is disposed near the lower cover 14 in the cylinder tube 11, and the lower rod 16 passes through the center portion of the guide member 17 so that the lower rod 16 cannot rotate and can move in the axial direction. Therefore, as shown in FIG. 8, a through-hole 171 having a square cross-sectional shape substantially the same as the cross-sectional shape of the lower rod 16 is provided in the central portion of the guide member 17. Inside the through hole 171, the three rollers 172 a to 172 a come into contact with the three outer peripheral surfaces 165 a to 165 c except the outer peripheral surface 165 d provided with the stopper 25 of the lower rod 16, and the lower rod 16 passes through the through hole 171. It can move smoothly. Moreover, the fluid pressure cylinder device 1 is installed vertically in the bathroom 2 as shown in FIG. 2, and moves up and down with a person on the first turning position PL1 and the second turning position PL2. Therefore, the fluid pressure cylinder device 1 receives the couple force applied to the cylinder tube 11 at the three outer peripheral surfaces 165a to 165c provided with the rollers 172a to c at both the first turning position PL1 and the second turning position PL2. Installed in the bathroom 2 as shown.

  The guide member 17 is urged toward the piston 12 by a spring 28 provided between the guide member 17 and the lower cover 14. The guide member 17 slides on the large-diameter portion 111 of the cylinder tube 11, and upward sliding is restricted by the upper end 173 of the guide member 17 abutting against the locking end 112 of the cylinder tube 11, The lower end portion 174 abuts on the lower cover 14 and is restricted from moving to.

  Next, the operation of the fluid pressure cylinder device 1 according to the embodiment of the present invention will be described.

  FIG. 3 shows how the cylinder tube 11 rises at the first turning position PL1. The cylinder tube 11 is raised by supplying tap water to the cylinder chamber 19. At the first turning position PL1, the cylinder tube 11 moves up and down from the descending end to the ascending end, so the cylinder tube 11 must pass through a stopper 25 provided in the middle of the lower rod 16. Therefore, at the first turning position PL1, the cylinder tube 11 maintains the positional relationship with the lower rod 16 as shown in FIG. 9 when viewed from below. As shown in FIG. 3, the maintenance of the positional relationship between the cylinder tube 11 and the lower rod 16 is such that the guide member 17 is biased upward by the spring 28 and the engagement groove 27a is engaged with the second pin 21 in the circumferential direction. It is done by combining. That is, the cylinder tube 11 is formed so that the second pin 21 engages with the engaging groove 27a and the turning with respect to the guide member 17 is restricted, and the guide member 17 is formed so as not to turn with respect to the lower rod 16. The tube 11 can be moved up and down without the stopper 25 becoming an obstacle while the tube 11 is maintained at the first turning position PL1.

  When the cylinder tube 11 rises to the vicinity of its rising end, the first pin 20 is fitted into the guide groove 23a of the piston 12 as shown in FIG. When the cylinder tube 11 reaches the ascending end, as shown in FIG. 5, the guide member 17 is pressed by the piston 12 and moves to the lower cover 14 side, so that the circumference of the second pin 21 and the engagement groove 27a is increased. The engagement in the direction is released, and the second pin 21 moves to the release groove 26. Further, the first pin 20 is guided in the guide groove 23 a and moves to the locking groove 22. At the rising end, both the first pin 20 and the second pin 21 are fitted into the locking groove 22 or the release groove 26. Therefore, in the fluid pressure cylinder device 1, the cylinder tube 11 can be turned from the first turning position PL1 to the second turning position PL2 at the rising end. This turning operation is performed manually.

As shown in FIG. 10, in the fluid pressure cylinder device 1, even if the cylinder tube 11 is moved downward at a position other than the first turning position PL <b> 1 and the second turning position PL <b> 2, the first pin 20 remains in the locking groove. The cylinder tube 11 cannot be lowered because it cannot engage with the shaft 22 in the axial direction and cannot escape from the locking groove 22. The second turning is performed at the first turning position PL1 (see FIG. 5) of the fluid pressure cylinder device 1. When the cylinder tube 11 is rotated 100 degrees to the right when viewed from below in order to change to the position PL2, the first pin 20 and the second pin 21 are moved from one end of the locking groove 22 and the release groove 26 to the other, respectively. Move to the end of the. In the second turning position PL2, the cylinder tube 11 and the lower rod 16 have a positional relationship as shown in FIG. 11 when viewed from below in order to stop the cylinder tube 11 at an intermediate position by the stopper 25.

  The lowering operation of the cylinder tube 11 is performed by switching a foot valve (not shown) to the lowering side and discharging tap water from the cylinder chamber 19 via the supply / discharge port 163 to the outside.

  When the cylinder tube 11 starts to descend and the contact between the piston 12 and the guide member 17 is released, the second pin 21 moves to the engagement groove 27b and the second pin 21 and the engagement groove 27b Engage in the circumferential direction. Therefore, the cylinder tube 11 is restricted from turning with respect to the rod. In the subsequent lowering operation, the cylinder tube 11 is maintained in a state of being fixed at the second turning position PL2. On the other hand, when the cylinder tube 11 starts to descend, the first pin 20 comes out downward from the guide groove 23b, so that the cylinder tube 11 descends without being blocked by the piston 12.

  As shown in FIG. 6, at the second turning position PL2, the cylinder tube 11 stops at the intermediate stop position when the lower cover 14 abuts against the stopper 25.

  Thus, the fluid pressure cylinder device 1 can perform the lowering and raising operations while the cylinder tube 11 is fixed to the first turning position PL1 or the second turning position PL2 selected at the rising end. Therefore, there is no possibility that the chair 31 on which the person is placed in the bathroom 2 is lowered to an inappropriate position such as the edge of the bathtub 33. Further, since the stop position of the lowering operation can be set by setting the stopper 25 according to the lowering position, the caregiver's operation is performed when, for example, the chair 31 on which the person is to be placed is lowered to the washing place 32 slightly higher than the lower end. There is no need to worry about mistakes.

  FIG. 12 is a front partial sectional view showing the operation of the fluid pressure cylinder device 1B according to another embodiment of the present invention. The fluid pressure cylinder device 1B includes a cylinder tube 11B, a piston 12B, an upper cylinder cover, a lower cover 14B, an upper rod 15B and a lower rod 16B fixedly integrated with the piston 12B, and a guide member 17B. The fluid pressure cylinder device 1 is the same. The piston 12B, the upper cylinder cover, the lower cover 14B, the upper rod 15B, and the lower rod 16B have the same configuration as the fluid pressure cylinder device 1.

  The cylinder tube 11B is provided with a locking pin 29B, one end of which protrudes inside the cylinder tube 11B.

  On the outer periphery of the guide member 17B, there are provided two engagement grooves 27Ba and b having a predetermined length extending from the upper end surface 175B to the lower cover 14B side in the axial direction with an interval of about 100 degrees in the circumferential direction. It has been. The engagement grooves 27Ba, b are provided so as to be positioned on the extension lines in the axial direction of the two guide grooves 23Ba, b provided in the piston 12B. The engagement grooves 27Ba, b are for restricting the turning of the cylinder tube 11B by engaging the engagement pin 29B into the cylinder tube 11B when the cylinder tube 11B is raised and lowered.

  The cylinder tube 11B and the guide member 17B also have the same configuration as the cylinder tube 11 and the guide member 17 in the fluid pressure cylinder device 1 except for the points described above.

  The operation of the fluid pressure cylinder device 1B will be briefly described with reference to FIG.

  (A) represents a mode that the cylinder tube 11B is rising in the vicinity of the rising end. The guide member 17B is urged upward by the spring 28B, and one engagement groove 27Ba and the locking pin 29B are engaged. The guide member 17B is biased by the spring 28B, moves to the piston 12B side, and is locked by the locking end 112B. By the engagement between the locking pin 29B and the engagement groove 27Ba, the turning of the cylinder tube 11B with respect to the guide member 17B, that is, the turning of the cylinder tube 11B with respect to the rod is restricted. The fluid pressure cylinder device 1 </ b> B can move up and down without the cylinder tube 11 </ b> B turning due to the engagement between the locking pin 29 </ b> B and the engagement groove 27 </ b> Ba.

  (B) represents a state in which the piston 12B and the guide member 17B are in contact with each other in the vicinity of the rising end of the cylinder tube 11B. The two engagement grooves 27Ba, b and the guide grooves 23Ba, b are continuous in the axial direction so as to form a guide path for the locking pin 29B to move from the guide member 17B to the piston 12B.

  (C) represents a state of the piston 12B, the guide member 17B, and the like at the rising end of the cylinder tube 11B. In (b), the piston 12B contacting the guide member 17B moves the cylinder tube 11B to the rising end while pressing the guide member 17B against the urging force of the spring 28B. In the process from (b) to (c), the locking pin 29B is guided from the engagement groove 27Ba to the guide groove 23Ba and moves to one end of the locking groove 22B. In this way, the locking pin 29B is engaged with either the engagement groove 27Ba or the guide groove 23Ba until the cylinder tube 11B stops at the rising end. Therefore, also in the fluid pressure cylinder device 1B, the rotation of the cylinder tube 11B is restricted in the entire stroke from the descending end to the ascending end.

  In (c), since the locking pin 29B can move between the two guide grooves 23Ba, b by the locking groove 22B, the cylinder tube 11B is moved from the first turning position PL1 to the second turning position PL2. Can be swiveled.

  In the above-described embodiment, the cylinder tubes 11 and 11B correspond to the tube member of the present invention, and the pistons 12 and 12B correspond to the piston member of the present invention. The locking pin 29B, the first pin 20, and the second pin 21 correspond to the locking pin, the first locking pin, and the second locking pin of the present invention, respectively, and the guide members 17 and 17B are engaged. It corresponds to a stop member. The locking grooves 22 and 22B correspond to the locking circumferential grooves of the present invention, and the guide grooves 23a, b, 23Ba and b correspond to the communication grooves of the present invention.

  In the above-described embodiment, the arrangement and shape of the cylinder tubes 11 and 11B, the pistons 12 and 12B, the guide members 17 and 17B, the lower covers 14 and 14B, the first pins 20, the second pins 21, and the locking pins 29B, The structure and the like can be variously changed. For example, the positional relationship between the second pin and the engagement groove may be reversed. That is, a second pin is provided on the outer periphery of the guide member 17, and an elongated hole into which the second pin having a length of 100 degrees around the axial center is fitted in the circumferential direction of the cylinder tube 11, and an upper portion from both ends in the circumferential direction of the hole. A locking hole for locking the second pin in the circumferential direction can be provided on the cylinder cover side. In that case, the combination of either the first pin 20 and the second pin 21 or the locking groove 22 and the release groove 26 is provided at an interval of 100 degrees around the axis. The cross-sectional shape of the lower rods 16 and 16B is not limited to a quadrangle, but may be another polygonal shape, or may be an elliptical shape or a circular shape that is a rectangular composite for stopping the rotation of the guide member. When it is desired to move the cylinder tubes 11 and 11B up and down at three or more locations, the guide grooves 23a, 23b, 23Ba, and 23Bb and the engagement grooves 27a, 27b, 27Ba, and 27Bb are provided according to the number of the lift positions. be able to.

  Furthermore, in the above-described embodiment, the first pin and the second pin can be arranged with an angle around the axis, rather than being arranged on one line in the axial direction. In this case, the two engaging grooves are provided with an angle formed by the first pin and the second pin about the axis from each guide groove.

  In addition to being installed in the bathroom 2, the fluid pressure cylinder device 1, 1 </ b> B in the above-described embodiment can be used as another nursing lift, for example, in combination with a hydraulic device, so that a person with a physical disability can be placed on the step. Can be used to get over. It can also be used as a transport lift when transporting a load from a determined position to another determined position.

  In the above-described embodiment, instead of the double rod type fluid pressure cylinder device, a single rod type fluid pressure cylinder device can be used, and a cylinder device having a drive source other than the fluid pressure can also be used.

  In addition, the structure, shape, dimensions, number, material, and the like of each part or the whole of the fluid pressure cylinder devices 1 and 1B can be appropriately changed in accordance with the spirit of the present invention.

It is front sectional drawing of the fluid pressure cylinder apparatus which concerns on this invention. It is a top view of the fluid pressure cylinder apparatus provided in the bathroom. It is a front fragmentary sectional view of a fluid pressure cylinder device with a cylinder tube in the vicinity of a descending end. It is a front fragmentary sectional view of a fluid pressure cylinder device in which a cylinder tube is in the vicinity of a rising end. It is a front fragmentary sectional view of the fluid pressure cylinder apparatus in which a cylinder tube exists in a raise end. It is a front fragmentary sectional view of a fluid pressure cylinder device in which a cylinder tube is in an intermediate stop position. It is a perspective view of a piston. It is a perspective view of a guide member. It is AA arrow sectional drawing in FIG. It is BB arrow sectional drawing in FIG. It is CC arrow sectional drawing in FIG. It is a front fragmentary sectional view which shows operation | movement of the fluid pressure cylinder apparatus which concerns on other this invention.

Explanation of symbols

1,1B Fluid pressure cylinder device (support device)
3 Support devices 11, 11B Cylinder tube (tube member)
12, 12B Piston (Piston member)
14, 14B Lower cover (cover member)
16, 16B Lower rod (rod)
17, 17B Guide member (locking member)
171 Through hole (insertion part)
19 Cylinder chamber 20 First pin (first locking pin)
21 Second pin (second locking pin)
22, 22B Locking groove (Locking groove)
23a, b Guide groove (Communication groove)
23Ba, b Guide groove (Communication groove)
24 holes (insertion holes)
25 Stopper (Stopper pin)
27a, b engagement groove (locking part)
27Ba, b engagement groove (locking groove)
28, 28B Spring (biasing member, compression spring)
29B Locking pin

Claims (6)

A tube member;
A piston member slidable along the inner peripheral surface of the tube member;
A rod connected to and integrated with the piston member and penetrating the tube member;
A locking pin protruding from the inner peripheral surface of the tube member;
A locking member provided so as to be non-rotatable in the circumferential direction and movable in the axial direction with respect to the rod;
A plurality of locking grooves provided on the locking member and locking the tube member in a relatively non-rotatable manner when the locking pin is fitted from the axial direction;
A biasing member provided on the tube member and biasing the locking member in a direction in which the locking pin fits into the locking groove;
A plurality of connecting grooves provided at positions corresponding to at least relative rotational angle positions of the plurality of locking grooves on the outer peripheral surface of the piston member, and the locking pins can be fitted from one side in the axial direction;
The locking pin is provided on the outer peripheral surface of the piston member so as to be continuous with the plurality of communication grooves and so as to be movable in the circumferential direction, and the locking pin has a shaft at a position excluding the plurality of communication grooves. A locking circumferential groove that is immovably locked in the direction;
Have
When the locking member is pushed by the piston member against the urging force of the urging member at one stroke end, the locking pin comes out of the locking groove, and the locking pin becomes the communication groove. It is configured to fit into the engaging circumferential groove.
A support device. One of the locking pins is configured to be movable over the locking groove, the communication groove, and the locking circumferential groove.
The support device according to claim 1. The locking pin comprises a first locking pin and a second locking pin,
The first locking pin is fitted into the locking groove, and the second locking pin is configured to be fitted into the communication groove and the locking circumferential groove.
The support device according to claim 1. A stopper pin for stopping the movement of the piston member and the tube member in the middle of the stroke protruding from the outer peripheral surface of the rod is provided,
A cover member having a hole through which the rod can be inserted is provided at an end of the tube member,
In the cover member, the stopper pin can be inserted in a state where the locking pin is fitted in at least one of the plurality of locking grooves, and the locking pin is out of the plurality of locking grooves. An insertion hole is provided that prevents the stopper pin from being inserted in a state where the stopper pin is fitted in at least one of the other,
The locking member is provided with an insertion portion through which the stopper pin can be inserted.
The support device according to claim 1. The biasing member is a compression spring;
The compression spring is mounted between the cover member and the locking member.
The support device according to claim 4. The side opposite to the side where the locking member of the piston member is provided inside the tube member is a cylinder chamber,
By supplying a pressurized fluid to the cylinder chamber, it is configured to generate a driving force for moving the piston member and the tube member relative to each other in the axial direction.
The support device according to any one of claims 1 to 5.