JP3871002B2 - Lift device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lift device, and more particularly, to an improvement of a lift device used when a care recipient such as a disabled person, an elderly person, or a sick person takes a bath.
[0002]
[Prior art and its problems]
As is well known, when a care recipient such as a physically handicapped person, an elderly person, or a sick person takes a bath, it is not sufficient to have normal bathing facilities, unlike a normal person who takes a bath.
[0003]
Therefore, in many cases, it is assumed that a lift device is provided, and a care recipient can take a bath using this lift device. As a lift device in this case, for example, Japanese Utility Model Publication No. 1-84439 Has a proposal for disclosure.
[0004]
That is, in the lift device proposed in the prior art, the cylinder is basically erected on the floor of the bathroom, while the seat portion of the chair on which the care recipient sits is lifted and lowered by the cylinder. At the same time, it is assumed that the cylinder pivots in the horizontal direction around the column that houses the cylinder.
[0005]
Therefore, according to this lift device, there is an advantage that it can be used only by being installed on the floor in the vicinity of the bathtub in the bathroom at a predetermined position, but on the other hand, there are the following problems. May be pointed out.
[0006]
That is, first, since the cylinder in the lift device described above is set as a hydraulic cylinder and is set to expand and contract by oil supply and discharge by a hydraulic source, when a so-called oil leak is caused, There is a defect that will contaminate the bathroom floor, which should be clean, with oil.
[0007]
Moreover, since the cylinder in the lift device described above is built in the column for turning the seat for seat 3 for turning the seat portion of the chair on which the care recipient sits, It becomes so-called bulky in the horizontal direction.
[0008]
As a result, for example, even if an attempt is made to place the above-described lift device around a unit bath that is widely used for personal and home use, the ceiling height in the unit bath is low, so that it cannot be realized. In the case of home care, there is a problem that the lift device cannot be used.
[0009]
The present invention was devised in view of the above-mentioned circumstances, and the object of the present invention is to improve the ease of installation by eliminating the overall bulkiness, and without the risk of oil contamination in the bathroom. The purpose is to provide a lift device that is optimal not only for installation in specialized facilities such as nursing homes but also for personal home installations where home care is required for care recipients.
[0010]
[Means for Solving the Problems]
In order to achieve the above-described object, the structure of the lift device according to the present invention basically includes a cylinder body whose base end is fixed on a bathroom floor and a lower end side is inserted into the cylinder body so that the lower end side can protrude and retract. A lifting device having a ram-type cylinder having a rod body and a seat for seating suspended via an arm connected to the upper end of the rod body in the cylinder. The cylinder is set to extend with the supply of water pressure from the water supply to the water pressure chamber formed in the cylinder body and to contract with the release of the water pressure in the water pressure chamber, while the rod body is under the detent mechanism. The cylinder body has a guide pin that moves in the radial direction of the rod body, and the cylinder body extends vertically on the inner periphery to selectively engage one of the one end and the other end of the guide pin. Ga A linear portion in which the guide groove extends from the lower end portion to the upper end portion of the cylinder body, and a turning portion that rises while turning in the horizontal direction continuously from the upper end of the linear portion, It is assumed that there is a switching part that descends continuously at the upper end of the swivel part and switches the guide pin in the radial direction of the rod body.
[0011]
In the basic configuration described above, more specifically, it is assumed that the guide groove is set to two lines and the positional relationship between the two is set to 90 degrees in the horizontal direction.
[0012]
In the basic configuration described above, more specifically, the supply and release of the water pressure for expanding and contracting the cylinder is realized by a switching operation in a switching valve that is disposed between the water supply and the cylinder and is switched manually. In this case, it is assumed that the operation unit that embodies the switching operation is preferably arranged on, for example, an armrest provided on the seat for seating.
[0013]
In the basic configuration described above, the switching unit may switch the guide pin in the radial direction of the rod body by gradually decreasing the depth from the upper end to the lower end, for example. Alternatively, a protrusion may be provided at the lower end with a constant depth from the upper end to the vicinity of the lower end, and the guide pin may be switched and moved in the radial direction of the rod body when the guide pin interferes with the protrusion.
[0014]
Note that the base end of the cylinder, that is, the cylinder body constituting the cylinder, may be connected to a base part embedded in the floor of the bathroom and fixedly fixed, and the base of the cylinder body may be fixed. An auxiliary leg connected to the end may be used and fixed so as to be removable.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, the lift device according to the present invention is a cylinder body whose base end is fixed to a floor F of a bathroom and stands up. 10 and a ram-type cylinder 1 having a rod body 20 whose lower end side is removably inserted into the cylinder body 10, and an arm 2 connected to the upper end of the rod body 20 in the cylinder 1. And a seat 3 for suspension.
[0016]
And this lift apparatus makes the seat 3 for seating outside the bathtub B (refer to the phantom diagram in FIG. 2) move up and down and swing so as to straddle the so-called bathtub B and to be present in the bathtub B (see FIG. 2 (see the solid line diagram in FIG. 2), or it is configured so that it can be returned from the inside of the bathtub B to the outside of the bathtub B.
[0017]
In this embodiment, the seating seat 3 is set so as to be swung at an angle of 90 degrees in the horizontal direction.
[0018]
By the way, the lower end of the cylinder body 10 is closed by a bottom member 11 formed in a so-called bowl shape (see FIG. 3) in the illustrated embodiment. The cylinder body 10 is also used as a fixing base member when the cylinder body 10 is erected on the floor F of the bathroom.
[0019]
Therefore, although not shown, the lower end of the cylinder body 10 is fixedly fixed by, for example, the bottom member 11 being continuously provided on a so-called base portion embedded in the floor F of the bathroom in advance. Alternatively, instead of this, an auxiliary leg connected to the bottom member 11 may be used and fixed on the floor F of the bathroom so as to be removable.
[0020]
Incidentally, the cylinder 1 is not only configured to have a predetermined self-supporting property, but also holds an arm 2 to be described later, that is, a seat for sitting in a state where a care recipient is seated via the arm 2. 3 is configured to have sufficient mechanical strength to suspend.
[0021]
On the other hand, as shown in FIG. 3, the cylinder 1 has a water pressure chamber R formed in the cylinder body 10 by a guide portion 30 that is a lower end portion of the rod body 20, from a water supply (indicated by reference sign P in the drawing). The water pressure is set so as to expand while being supplied with the water pressure, and to contract by releasing the water pressure supplied to the water pressure chamber R.
[0022]
Incidentally, the guide portion 30 which is the lower end portion of the rod body 20 has an outer peripheral surface which is in sliding contact with the inner peripheral surface of the cylinder body 10 when the rod body 20 protrudes and retracts with respect to the cylinder body 10. The bending with the rod body 20 is prevented.
[0023]
Further, the water pressure from the water supply P is supplied to the water pressure chamber R through the switching valve V, and the switching valve V is switched to the supply position V2 or the discharge position V3 by manual operation in the operation unit V1. It is said.
[0024]
In this embodiment, although not shown, the operation unit V1 is provided on the armrest 3a (see FIGS. 1 and 2) in the seating seat 3, and the care recipient who uses the lift device himself Consideration is given to rehabilitating the switching valve V with the force of
[0025]
The water pressure released from the water pressure chamber R for contracting the cylinder 1, that is, water, is stored in the tank T so that it can be reused.
[0026]
Although not shown, the switching valve V may have a blocking position as a position for stopping the supply and discharge of water pressure, that is, stopping the expansion and contraction of the cylinder 1.
[0027]
As described above, since the cylinder 1 is configured to be extended by using water pressure, it is advantageous in that it does not require equipment such as a hydraulic source as a so-called drive source. Even if a liquid leak is caused, it is possible to maintain the bathroom in a hygienic manner without contaminating the floor F of the bathroom with oil as compared with the liquid leak when using so-called hydraulic pressure, that is, the oil leak. It will be advantageous.
[0028]
By the way, in this embodiment, as shown in FIGS. 3 and 4, the cylinder body 10 has one guide groove 12 and two other guide grooves 13 that are two guide grooves extending in the vertical direction on the inner periphery thereof. The rod body 20 is provided with a guide pin 40 that moves in the radial direction of the rod body 20 in the vicinity of the guide portion 30 in the presence of the detent mechanism D (see FIG. 4). Yes.
[0029]
Then, when the cylinder 1 is extended and retracted so that the rod body 20 protrudes and retracts, either one end or the other end of the guide pin 40 is selectively set to one of the guide grooves 12 and 13. In particular, in the stroke from the most extended state to the most extended state of the rod body 20, the rod body 20 rotates with respect to the cylinder body 10 by the engagement of the guide pin 40, and the seat 3 for seating. It is supposed that it is set so that the arm 2 which suspends can be turned.
[0030]
Incidentally, in this embodiment, as described above, since the seating sheet 3 to become set to be swung to the angle of the horizontal direction of 90 degrees, the positional relationship of both of the guide grooves 12, 13 Is set to be 90 degrees in the horizontal direction.
[0031]
To explain a little, first, the guide pin 40 is formed of a cylindrical body having both ends spherical as shown in FIG. 4, and has two annular recesses 41 and 42 having an arcuate cross section on the outer periphery of the intermediate portion. It is supposed to be done.
[0032]
Incidentally, although it is the length of this guide pin 40, when one end is present in one guide groove 12, the other end does not protrude from the outer periphery of the rod body 20 at all, or even if it protrudes, the cylinder body 10 The length is set so as not to interfere with the inner circumference of the.
[0033]
It should be noted that although it is at both ends of the guide pin 40, the point is that it should be set to a structure that is easy to slide when it is present in each guide groove 12, 13, instead of the above-mentioned spherical finish, for example, FIG. As shown in FIG. 4, a sliding contact material 43 made of a material having a high slidability such as Teflon may be spread on the surface, and further, although not shown, a sphere like a so-called pen tip of a ballpoint pen. It may be set to a structure having
[0034]
On the other hand, the detent mechanism D related to the guide pin 40 is provided in the rod body 20 below the guide portion 30 and selectively fits in the annular recesses 41 and 42 in the guide pin 40 described above. A hard ball D1, a spring D2 that urges the hard ball D1 from the back side, and a cap D3 that engages the spring D2 and is screwed to the rod body 20 are provided.
[0035]
Therefore, in this detent mechanism D, for example, when the guide pin 40 is in the left-handed state shown in FIG. In this case, this is allowed, and the right guide pin 40 is maintained in a stationary state and the left row is allowed in the same manner as described above.
[0036]
For the guide pins 40 set as described above, the guide grooves 12 and 13 are configured as follows.
[0037]
That is, as schematically shown in FIG. 6, one guide groove 12 and the other guide groove 13 are both linear portions 12a and 13a extending from the lower end portion to the upper end portion of the cylinder body 10 , and the straight line. Swivel parts 12b and 13b that rise while rotating 90 degrees horizontally in a horizontal direction continuously to the upper ends of the parts 12a and 13a, and depths that descend to an appropriate length continuously to the upper ends of the swivel parts 12b and 13b And switching portions 12c and 13c for gradually reducing the depth of.
[0038]
Incidentally, the revolving parts 12b and 13b are set so that their rotational directions are opposite to each other, and the guide pin 40 can perform a so-called return movement as will be described later.
[0039]
Then, the switching portions 12c and 13c gradually decrease in depth from the upper end to the lower end, and when the guide pin 40 descends the switching portions 12c and 13c, the rod body 20 is switched in the radial direction. Instead of this, instead of this , a protrusion is provided at the lower end while keeping the depth from the upper end to the vicinity of the lower end, and the rod body when the guide pin 40 interferes with the protrusion. It may be set so as to switch in the 20 radial direction.
[0040]
Moreover, about the lower end position of the linear parts 12a and 13a in each guide groove 12, 13, although it determines with the relationship between the depth of the bathtub B and the height position of the floor F of a bathroom, in the place shown in FIG. Assuming that the depth of B is set to be lower than the height position of the floor F, the lower end position of the straight portion 13a in the other guide groove 13 is the lower end position of the straight portion 12a in the one guide groove 12. It is going to be lower.
[0041]
When the engagement state of the guide pin 40 with respect to each of the guide grooves 12 and 13 configured as described above is as follows, first, the guide pin 40 is in the left row state shown in FIG. One end is engaged with one guide groove 12, and it is assumed that the seat 3 for seating is outside the bathtub B and is in the lowest position.
[0042]
If this state is a state indicated by a in FIG. 6, when water pressure is supplied to the cylinder 1 from this state and the cylinder 1 is extended, one end of the guide pin 40 is a straight portion of one guide groove 12. It rises in the state engaged with 12a.
[0043]
When one end of the guide pin 40 reaches the upper end of the linear portion 12a as indicated by symbol b in FIG. 6, and subsequently reaches the swivel portion 12b as indicated by symbol c in FIG. The guide pin 40 further rises while rotating in the horizontal direction, and the guide groove 12 is in a so-called highest lifted state as indicated by reference numeral d in FIG.
[0044]
Incidentally, when one end of the guide pin 40 is in the turning portion 12b, the rod body 20 is turned with respect to the cylinder body 10, and therefore, the guide pin 40 whose one end rises up the turning portion 12b is Therefore, the seat 3 for seating outside the bathtub B is positioned above the bathtub B at this time.
[0045]
From this state, when the hydraulic pressure to the cylinder 1 is released and contracted, one end of the guide pin 40 is engaged with the switching portion 12c, and as a result, the guide pin 40 is denoted by reference symbol e in FIG. As shown in FIG. 6, when the one end of the guide pin 40 reaches the lowermost end of the switching portion 12c, the other end of the guide pin 40 is moved to the other side. The guide groove 13 is engaged with the upper end of the linear portion 13a.
[0046]
Therefore, when the contraction of the cylinder 1 is further continued from this state, the other end of the guide pin 40 is lowered while being engaged with the linear portion 13a in the other guide groove 13, and the guide pin 40 The seat 3 is lowered into the bathtub B when the other end is moved down the straight portion 13a as indicated by a symbol g in FIG.
[0047]
On the other hand, contrary to the above, in order to take out the seat 3 for seating in the bathtub B out of the bathtub, from the state which the other end of the guide pin 40 exists in the lowermost end of the linear part 13a in the other guide groove 13. The cylinder 1 is extended.
[0048]
As a result, the guide pin 40 rises with the other end engaged with the straight line portion 13a in the guide groove 13 and reaches the uppermost end of the straight line portion 13a. The other end of the pin 40 reaches the swivel portion 13b and further rises while rotating in the horizontal direction as indicated by symbol h in FIG. 6, and the guide groove 13 is so-called as indicated by symbol i in FIG. It becomes the highest state.
[0049]
Incidentally, when the other end of the guide pin 40 is in the turning portion 13b, the rod body 20 is turned in a so-called return direction with respect to the cylinder body 10, and therefore passes through the turning portion 13b and rises most. The guide pin 40 is placed at a position rotated 90 degrees in the horizontal direction in the returning direction as compared with the angular position when the linear portion 13a in the guide groove 13 is raised. The seat 3 for seating is positioned above the outside of the bathtub B.
[0050]
From this state, when the hydraulic pressure to the cylinder 1 is released and contracted, the other end of the guide pin 40 is engaged with the switching portion 13c, and as a result, the guide pin 40 is indicated by a sign in FIG. As indicated by j, it is gradually retracted, and when the lowermost end of the switching portion 13c is reached, as shown by symbol k in FIG. 6, the other end of the guide pin 40 is in the other guide groove 12. It will be in the state engaged with the upper end part of the linear part 12a.
[0051]
Therefore, when the contraction of the cylinder 1 is further continued from this state, one end of the guide pin 40 is lowered while being engaged with the linear portion 12a in the one guide groove 12, and the guide pin 40 is As shown by the symbol a in FIG. 6, the seating seat 3 is lowered out of the bathtub B when the straight portion 12 a is lowered to the bottom.
[0052]
The operation of extending and retracting the cylinder 1 is of course a switching operation at the switching valve V. However, this switching operation is performed when the operation portion V1 of the switching valve V is disposed on the armrest 3a of the seating seat 3. When the user is present, the care recipient who is seated on the seating seat 3 directly operates, and when the operation unit V1 is located at a place other than that, that is, at a position away from the seating seat 3, the caregiver Will operate.
[0053]
As described above, since the seat 3 for seating suspended from the cylinder 1 is set so as to be turned in the angle range of 90 degrees inside and outside of the bathtub B, the guide groove is formed into two strips (12, 13). However, in consideration of the intention of the present invention, when the seating seat 3 is set so as to turn at an angle range of 180 degrees on one side, as long as the guide pin 40 is provided under the distribution of the detent mechanism D, Only one guide groove may be provided.
[0054]
In this case, since it is not necessary to form the two guide grooves 12 and 13 on the inner periphery of the cylinder body 10, it is possible to reduce the number of processing steps in the cylinder body 10. In order to reduce the cost, it is advantageous compared to the above-described embodiment.
[0055]
However, in this case, the seating seat 3 will turn 360 degrees in total, and there is a disadvantage that a large occupied area is required, but the seating seat 3 is reciprocated inside and outside the bathtub B. In the point where it can be moved up and down, the same effect as described above can be obtained, and its realization becomes possible.
[0056]
【The invention's effect】
As described above, according to the present invention, since the cylinder holding the seat for seating is set to be extended by the water pressure from the water supply, the cylinder is set to be extended by using, for example, hydraulic pressure. Compared to the case where it is done, there is an advantage that equipment such as a hydraulic power source as a drive source is not necessary, and even if a so-called liquid leakage phenomenon occurs, the bathroom floor is contaminated with oil. This is advantageous in that no trouble is caused.
[0057]
Further, according to the present invention, one end or the other end of the guide pin movably provided on the rod body when the cylinder in which the rod body is projected and retracted with respect to the cylinder body is extended or retracted. The guide groove is selectively engaged with the guide groove formed on the periphery, and in addition, in order to rotate the rod body with respect to the cylinder body, the guide groove has a swivel portion. Since the guide groove has a switching portion for switching, the cylinder can be expanded and contracted only by the switching operation in the switching valve, and the seating seat is automatically turned to a predetermined angle only by expanding and contracting the cylinder. Therefore, there is an advantage that the operation at the time of use can be simplified, as well as an element for turning the seating seat, that is, a guide groove Since all of the guide pins are in the cylinder, it is not necessary to provide a device for turning the seat for seating and a column for holding the seat as in the conventional example, and the entire lift device is not necessary. This is advantageous in that it does not cause bulkiness and lengthening.
[0058]
As a result, according to the present invention, the overall bulkiness is eliminated and the installation property is improved, and there is no fear of oil contamination in the bathroom, as well as installation in specialized facilities such as nursing homes for the elderly. There is also an advantage that is optimal for personal home-like installations where home care is provided to the elderly.
[Brief description of the drawings]
FIG. 1 is an elevational view showing a use state of a lift device according to an embodiment of the present invention in a state where a bathtub is broken.
FIG. 2 is a plan view showing the lift device of FIG. 1 while showing a swivel seat for seating in a virtual diagram.
FIG. 3 is a partial longitudinal sectional view showing a cylinder in the lift device of FIG.
FIG. 4 is an enlarged partial cross-sectional view showing a state in which a guide pin is provided under a detent mechanism in a rod body portion in a cylinder body.
FIG. 5 is a cross-sectional view partially showing an end portion of a guide pin according to another embodiment together with a cylinder body and a rod body.
FIG. 6 is an explanatory view showing a state in which a guide pin is engaged with a guide groove over time.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cylinder 2 Arm 3 Seat for seat 3a Armrest 10 Cylinder body 11 Bottom member 12, 13 Guide groove 12a, 13a Linear part 12b, 13b Turning part 12c, Switching part 20 Rod body 30 Guide part 40 Guide pin B Bathtub D Detent mechanism F Floor P Water supply R Water pressure chamber T Tank V Switching valve

Claims (2)

A cylinder set to a ram type having a cylinder body whose base end is fixed on the floor of the bathroom and standing up and a rod body in which the lower end side can be inserted and retracted, and a rod body in this cylinder A lift device having a seat for seating suspended through an arm connected to the upper end, and the cylinder extends by supplying water pressure from the water supply to a water pressure chamber formed in the cylinder body In addition, the rod body has a guide pin that moves in the radial direction of the rod body in the presence of the detent mechanism, while the cylinder body is configured to contract by releasing the water pressure in the water pressure chamber. Has a guide groove that extends vertically on the inner periphery and selectively engages either one end or the other end of the guide pin. This guide groove extends from the lower end to the upper end of the cylinder body. Or A straight portion extending in a horizontal direction, a swiveling portion that rises while turning in a horizontal direction continuously to the upper end of the straight portion, and a guide pin that is continuously lowered to the upper end of the swiveling portion and extends in the radial direction of the rod body. A lift device comprising a switching unit for switching and moving 2. The lift device according to claim 1, wherein the guide groove is set to be two and the positional relationship between the guide grooves is set to 90 degrees in the horizontal direction.

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