JP5035326B2 - Transfer support device - Google Patents

Description

  The present invention relates to a transfer support apparatus, and more particularly to a technique for avoiding interference with a cared person.

  For a cared person who is difficult to walk independently, it is not easy to perform the transfer operation by himself / herself such as moving from a bed to a wheelchair, and usually the caregiver needs assistance. However, the assistance of the transfer operation has a great physical burden on the caregiver and a great mental burden on the care recipient. Thus, in recent years, devices have been developed that support transfer operations of cared persons who are difficult to walk independently.

  As this type of technology, Patent Document 1 discloses a posture changing device including a frame, an arm that is rotatable with respect to the frame, and a chest pad attached to the tip of the arm. When performing posture conversion of the patient using this posture conversion device, first, the arm is lowered to bring the chest pad closer to the patient's chest in order to mount a support member that supports the patient's upper body and buttocks. Although the arm descending operation is basically stopped by a hand switch, it is also performed by a swing switch attached to the arm just in case. In other words, even when the arm has reached the patient's thigh due to the stoppage of the lowering operation not being properly performed, this arrival is detected by the swing switch, and the operation of the arm drive mechanism itself Will stop automatically.

JP-A-9-570

  However, if the swing switch is not properly attached, it may not be possible to properly detect that the arm has reached the patient's thigh.

  The present invention has been made in view of such various points, and a main object thereof is to provide a transfer support apparatus capable of avoiding interference with a cared person with a completely new concept.

According to an aspect of the present invention , a carriage, an arm portion that is attached so as to be freely tiltable with respect to the carriage, a body holding portion that is provided in the arm portion and holds a care recipient, and the arm The driving force source for the tilting operation of the part and the arm to transmit the driving force of the driving force source to the body holding part while moving the cared person while the arm does not move the cared person A driving force transmission mechanism that does not transmit the driving force of the driving force source to at least one of the body holding portion and the body holding portion, and the driving force transmission mechanism is provided on the cart side And the driven part provided on the body holding part side and the driving part and the driven part come into contact with each other while moving the cared person, thereby transmitting the driving force of the driving force source to the arm part. Before moving the caregiver And a connecting part that connects the driving part and the driven part so that the driving force of the driving force source is not transmitted to the arm part when the driving part and the driven part are separated from each other. The connecting portion is configured such that the driving portion and the driven portion are separated by a reaction force acting on the body holding portion from the cared person, equivalent to the gravity applied to the arm portion while the cared person is not moved. The drive unit and the driven unit are coupled to each other, the drive unit has a projection, and the driven unit has a second contact surface that can contact the first contact surface of the projection The connecting portion is configured such that the first contact surface and the second contact surface are in contact with each other while the care receiver is moved, and the first contact surface and the second contact surface are separated from each other while the care receiver is not moved. The drive unit and the driven unit are connected to each other. Transfer assist apparatus is provided to.
Preferably, the connecting portion includes the driving portion and the driven portion so that the driving portion and the driven portion are contacted by gravity applied to the arm portion when the body holding portion is not in contact with the care receiver. The driven part is connected to the driven part so that the driven part and the driven part are brought into contact with each other by gravity applied to the arm part and the care receiver while the care receiver is moved. The driven part is connected.
Preferably, when the driving force transmission mechanism does not transmit the driving force of the driving force source to any one of the arm part and the body holding part, the operator of the transfer assisting device or the subject Informing means for informing the caregiver, wherein the informing means is provided on the first uneven surface provided on the cart side and the body holding part side, and the arm part and the body are provided by the driving force transmission mechanism. A second concavo-convex surface that rubs against the first concavo-convex surface when the driving force of the driving force source is not transmitted to any one of the holding portions.

  ADVANTAGE OF THE INVENTION According to this invention, the transfer assistance apparatus which can avoid the interference with a care receiver by a completely new idea can be provided.

Side view of the transfer support apparatus according to the first embodiment Enlarged side view of body holder Control block diagram of transfer support device Operation explanatory diagram of transfer support device Operation explanatory diagram of transfer support device Exploded perspective view of driving force transmission mechanism Operation explanatory diagram of driving force transmission mechanism Operation explanatory diagram of transfer support device Exploded perspective view of the driving force transmission mechanism according to the second embodiment Enlarged side view of the driving force transmission mechanism according to the third embodiment Side view of the driving force transmission mechanism according to the fourth embodiment

<First embodiment>
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. Hereinafter, the configuration and operation of the transfer support apparatus 100 of the present embodiment will be roughly described, and then details will be described in detail.

  As shown in FIG. 1, in this embodiment, the transfer assist device 100 is attached to the carriage 1, the arm part 2 attached so as to be freely tiltable with respect to the carriage 1, and the arm part 2. The body holder 3 as a body holding part for holding the cared person M is provided as a main configuration.

  The carriage 1 includes a carriage body 6 and wheels 7 provided on the front, rear, left and right of the bottom surface of the carriage body 6. A base portion 8 for supporting the arm portion 2 is attached on the cart body 6.

  The arm unit 2 includes a first arm 9 and a second arm 10. The first arm 9 is supported by the base portion 8 via the first joint portion 11. With the first joint portion 11, the first arm 9 can rotate around the yaw axis and the pitch axis with respect to the base portion 8. The “yaw axis” means an axis parallel to the vertical direction, that is, an axis parallel to the vertical direction of the drawing in FIG. The “pitch axis” means an axis parallel to the horizontal direction, that is, an axis parallel to the direction perpendicular to the paper surface of FIG. The base portion 8 is provided with a first motor 12 as a drive source for rotating the first arm 9 about the yaw axis, and the first joint portion 11 rotates the first arm 9 about the pitch axis. A second motor 13 is provided as a drive source for driving.

  The second arm 10 is supported by the first arm 9 via the second joint portion 14. By the second joint portion 14, the second arm 10 can rotate around the pitch axis with respect to the first arm 9. The second joint portion 14 is provided with a third motor 15 as a drive source for rotationally driving the second arm 10 around the pitch axis.

  The body holder 3 is for holding the body of the cared person M. In the present embodiment, the body holder 3 is configured to hold the upper body of the cared person M in detail. The body holder 3 is detachably attached to the second arm 10 via the attachment portion 16 and the fourth joint portion 17 in this order. By the fourth joint portion 17, the body holder 3 and the attachment portion 16 can rotate around the roll axis with respect to the second arm 10. The “roll axis” means an axis parallel to the longitudinal direction of the second arm 10. The fourth joint portion 17 is provided with a fourth motor 18 as a drive source for rotationally driving the attachment portion 16 around the roll axis.

  As shown in FIG. 2, the body holder 3 includes a trunk support portion 19 for supporting the chest and abdomen of the cared person M, and a jaw support part for supporting the jaw part of the cared person M. 20 and a pair of side support portions 23 for supporting the side portions of the cared person M. The trunk support portion 19 further includes a chest support portion 21 for supporting the chest of the care receiver M and an abdominal support portion 22 for supporting the abdomen of the care receiver M. ing. The armpit support portion 23 is formed as a pair protruding from the trunk support portion 19 toward the care receiver M side. Each armpit support portion 23 has a sufficient length so as to penetrate the armpit of the cared person M and protrude toward the back side of the cared person M when the cared person M is transferred. The trunk support unit 19 is vertically supported to support the cared person M's chest and abdomen over a wide range, in other words, in a direction parallel to the extending direction of the cared person's spine, Sufficient length is secured. The trunk support lower end 24, which is the lower end of the trunk support 19, corresponds to the lower end of the body holder 3.

  Next, the control block diagram shown in FIG. 3 will be described. The control device 50 includes a CPU (Central Processing Unit) 51 as a calculation unit, a ROM (Read Only Memory) 52 as a storage unit storing a control program, and a storage unit that temporarily stores processing data and the like. The microcomputer includes a RAM (Random Access Memory) 53. As shown in FIG. 3, each motor (the first motor 12, the second motor 13, the third motor 15, and the fourth motor 18) is connected to the control device 50 via the drive circuit 54. Accordingly, each motor is driven based on the control signal transmitted from the control device 50 to the drive circuit 54. An operation handle 55 is connected to the control device 50 as control content input means for the caregiver or care receiver M to input the control content of each motor by the control device 50 to the control device 50. The control device 50 controls the driving of each motor based on the control content input via the operation handle 55. With the above configuration, the care giver or the care receiver M can freely control the positions and postures of the arm unit 2 and the body holder 3 by appropriately operating the operation handle 55.

(Operation)
Next, the operation of the transfer support apparatus 100 will be outlined with reference to FIGS. 1, 4, and 5. Hereinafter, a scene until the cared person M in the state of sitting on the bed B as shown in FIG. 4 is lifted and raised as shown in FIG. 1 will be described.

  First, in FIG. 4, a caregiver (not shown) moves the transfer support apparatus 100 to a suitable position in front of the cared person M sitting on the bed B, and at the same time, moves the foot of the cared person M to the carriage 1. On the main body 6 of the car. Next, as shown in FIG. 4, the caregiver operates the operation handle 55 (see also FIG. 3) to position the body holder 3 obliquely above the thigh of the care receiver M. . At this time, the armpit support portion 23 is not yet inserted under the armpit of the cared person M, and the trunk support lower end portion 24 of the trunk support part 19 of the body support 3 is connected to the thigh of the cared person M. It is in the state which has the clearance gap G between.

  Next, the caregiver operates the operation handle 55 so that the state shown in FIG. 4 is changed to the state shown in FIG. That is, first, the care giver inserts the armpit support 23 into the armpit of the cared person M as shown in FIG. Furthermore, the caregiver further advances the body support 3 toward the care receiver M so that the trunk support portion 19 of the body support tool 3 is in close contact with the trunk of the care receiver M. When it is confirmed that the trunk support portion 19 of the body holder 3 is in close contact with the trunk of the cared person M, the caregiver immediately stops the advancement of the body holder 3 toward the cared person M side. The transfer support device 100 according to the present embodiment is generally called a hugging type transfer support device because the cared person M is hugging the body holder 3 in FIG. ing. Next, the caregiver operates the operation handle 55 so that the chest of the care recipient M is supported by the chin support portion 20 (see also FIG. 2). The body holder so that the side of the cared person M is supported by the side support part 23 so that the abdomen of the cared person M is supported by the abdominal support part 22 so as to be supported by the support part 21 Fine-tune the position and orientation of 3.

  Next, the caregiver operates the operation handle 55 so that the state shown in FIG. 5 is changed to the state shown in FIG. That is, the caregiver operates the operation handle 55 to rotate the body holder 3 around the second joint portion 14 counterclockwise in FIG. Then, the cared person M supported by the body holder 3 is lifted by the body holder 3 and stands up as shown in FIG.

  Next, the caregiver transports the transfer support apparatus 100 to the front of the wheelchair while the care receiver M is placed on the transfer support apparatus 100 as shown in FIG. Subsequent operations such as lowering the cared person M to the wheelchair and releasing the body support 3 from the cared person M are the reverse of the above-described contents.

(Driving force transmission mechanism D)
The configuration and operation of the transfer support apparatus 100 have been roughly described above. Next, the configuration of the driving force transmission mechanism D will be described with reference to FIG. In the present embodiment, as shown in FIG. 1, the driving force transmission mechanism D is mounted on the second joint portion 14 that connects the first arm 9 and the second arm 10 of the arm portion 2. The driving force transmission mechanism D is configured so that each motor (the second motor 13 and the third motor 15) is operated with respect to the body holder 3 while the cared person M is moved from the state shown in FIG. 5 to the state shown in FIG. On the other hand, while the cared person M is not moved, the driving force of each motor (second motor 13 and third motor 15) is not substantially transmitted to the body holder 3. is there. By this driving force transmission mechanism D, the interference of the body holder 3 with the cared person M can be surely avoided. Hereinafter, the driving force transmission mechanism D will be described in detail.

  As described above, the first arm 9 and the second arm 10 shown in FIG. 1 are connected by the second joint portion 14. As shown in FIG. 6, the second joint portion 14 includes a pair of bearings 25 formed at the distal end of the first arm 9 and a pair of bearings 26 formed at the proximal end of the second arm 10. The shaft 27 is inserted straight into the shaft holes of the bearings 25 and 26 positioned so as to be coaxial. The second joint portion 14 is provided with a driving tool 28 that is rotated in a forward / reverse direction by a third motor 15 (not shown) (see also FIG. 1). The drive tool 28 includes a bearing 29 and a protrusion 30 formed by integral molding with the bearing 29. The driving tool 28 is attached to the second joint portion 14 so that the bearing 29 is coaxial with the bearing 25 of the first arm 9 and the bearing 26 of the second arm 10. In other words, the shaft 27 is coaxially positioned with the shaft hole of the bearing 25 of the first arm 9, the shaft hole of the bearing 26 of the second arm 10, and the shaft hole of the bearing 29 of the drive tool 28. , Is inserted straight into. In the present embodiment, as shown in FIG. 6, the bearing 29 of the driving tool 28 is sandwiched by the bearing 26 of the second arm 10, and the bearing 26 of the second arm 10 is supported by the bearing 25 of the first arm 9. It is a relationship between them.

  The protrusion 30 of the driving tool 28 has a first contact surface 30a, and the second arm 10 has a second contact surface 10a. In the state where the driving tool 28 and the second arm 10 are connected using the shaft 27 as described above, the first contact surface 30a of the protrusion 30 of the driving tool 28 and the second contact surface 10a of the second arm 10 Depending on the relative angular position of the driving tool 28 and the second arm 10, they can be opposed to or in contact with each other with a gap. Here, the direction approaching the cared person M for the second arm 10 means a clockwise direction as indicated by an arrow X in FIG.

  In the present embodiment, the third motor 15 corresponds to “a drive source for the tilting operation of the arm unit 2” and “a drive mechanism that drives the arm unit 2 to move the body holder 3 in the vertical direction”. Further, the “body holding tool 3” corresponds to “an interference portion that is a part capable of interfering with the care receiver M of the arm part 2 and the body holding tool 3”. Moreover, the driving tool 28 corresponds to the “driving unit provided on the cart 1 side”. Moreover, the second arm 10 corresponds to “the driven portion provided on the body holder 3 side”. Further, “the driving tool 28 and the second arm 10 can contact the driving tool 28 in a direction in which the second arm 10 approaches the cared person M and the driving tool 28 and the second arm 10 can be separated from each other. A combination of the shaft 27, the bearing 26 of the second arm 10, and the bearing 29 of the driving tool 28 corresponds to the connecting portion R ”that connects the arm 10. That is, the connecting portion R is configured by the shaft 27, the bearing 26 of the second arm 10, and the bearing 29 of the driving tool 28. Further, in the present embodiment, “in the direction in which the second arm 10 approaches the cared person M with respect to the driving tool 28” in the present embodiment, “the second arm 10 with respect to the driving tool 28 is the cared person M. In the direction approaching the thigh. And the above-mentioned driving force transmission mechanism D is comprised by the drive tool 28 as a drive part, the 2nd arm 10 as a to-be-driven part, and said connection part R. FIG. Furthermore, the above-described driving force transmission mechanism D corresponds to “a connecting member that prohibits downward movement of the body holder 3 and allows upward movement of the body holder 3”. In the present embodiment, “the downward movement of the body holder 3” means “the downward movement of the body holder 3 relative to the protrusion 30 of the driving tool 28”. The “upward movement of the body holder 3” means “the upward movement of the body holder 3 relative to the protrusion 30 of the driving tool 28”.

  In other words, the configuration of the driving force transmission mechanism D is such that the second arm 10 (driven portion) is raised with respect to the driving tool 28 (driving portion) that is a part directly connected to the third motor 15. The direction is free and the descending direction is constrained. If it says from another viewpoint, the transfer assistance apparatus 100 has the structure which makes the body holder 3 freely movable at least to the raise direction.

(Operation)
Next, the operation of the driving force transmission mechanism D will be described in detail with reference to FIGS. FIG. 7A is a partially enlarged perspective view of FIG. 8A, and FIG. 7B is a partially enlarged perspective view of FIG. 8B. Therefore, in the following description, please refer to FIG. 7 and FIG. 8 alternately as appropriate while keeping the above relationship in mind. FIG. 8A is a diagram obtained by slightly reducing FIG.

  In the state of FIG. 8A, the body holder 3 is stationary with the trunk support lower end portion 24 of the trunk support portion 19 left a slight gap between the care receiver M and the thigh. ing. A state of the driving force transmission mechanism D at this time is shown in FIG. In this stationary state, the driving tool 28 is stationary so as not to rotate due to the rotational holding force of the third motor 15 (see also FIG. 8). On the other hand, a clockwise rotational torque indicated by a symbol X acts on the second arm 10 around the shaft 27 because of gravity corresponding to the total weight of the body holder 3 and the second arm 10. However, the driving tool 28 is in a stationary state as described above, and the second arm 10 is configured to be able to contact the protrusion 30 of the driving tool 28 in the direction indicated by the symbol X. The stationary state is maintained together in a form supported by the protrusion 30 of the tool 28.

  In the state of FIG. 8A, it is assumed that the caregiver mistakes the operation of the operation handle 55 and further operates to lower the body holder 3. Then, the driving tool 28 starts to rotate clockwise from the state of FIG. 7A by the driving force of the third motor 15, and accordingly, the trunk support lower end 24 of the trunk support part 19 of the body holder 3. Touches and adheres to the thigh of the care recipient M. By this close contact, the body holder 3 receives a reaction force equivalent to the gravity acting on the body holder 3 itself from the thigh of the care receiver M. And by this reaction force, the body holder 3 shifts from the state supported by the protrusion 30 of the driving tool 28 to the state supported by the care receiver M's thigh.

  Furthermore, suppose that the caregiver has continued the above-mentioned erroneous operation. Then, the driving tool 28 continues to rotate further clockwise by the driving force of the third motor 15. However, as described above, the first contact surface 30a of the protrusion 30 of the driving tool 28 and the second contact surface 10a of the second arm 10 are configured to be separated from each other. Further, the second contact surface 10 a of the second arm 10 can contact the first contact surface 30 a of the protrusion 30 of the driving tool 28 in a direction approaching the care receiver M. In short, the second arm 10 is merely placed on the driving tool 28. Accordingly, the driving tool 28 can no longer rotate with the second arm 10 already shifted from the state supported by the driving tool 28 to the state supported by the thigh of the care recipient M. As shown in FIG. 8B, the second arm 10 is left unrelated to the rotation of the driving tool 28. As a result of this leaving, a gap g is formed between the first contact surface 30 a of the protrusion 30 of the driving tool 28 and the second contact surface 10 a of the second arm 10. As described above, even when the caregiver erroneously operates the operation handle 55 and performs an operation of further lowering the body holding tool 3, the second arm 10 remains on the driving tool 28 as shown in FIG. Therefore, the driving force of the third motor 15 is not transmitted to the body holder 3. In other words, the driving force of the third motor 15 when the driving tool 28 is rotated clockwise in FIG. 7A depends on the position and posture of the body holding tool 3 and the second arm 10. Nevertheless, it is not transmitted to the body holder 3 substantially. Therefore, interference of the body holder 3 with the thigh of the care receiver M can be avoided.

  On the other hand, when the caregiver operates the operation handle 55 to shift from the state shown in FIG. 5 to the state shown in FIG. 1, the drive tool 28 supports the second arm 10 from below as shown in FIG. Therefore, the driving force of the third motor 15 is transmitted to the body holder 3 through the second arm 10 without any problem.

  As described above, the driving force transmission mechanism D transmits the driving force of the third motor 15 to the body holder 3 while the care receiver M is moved. While not moving, it has a technical feature that substantially does not transmit the driving force of the third motor 15 to the body holder 3.

  As long as the second arm 10 does not receive the reaction force described above from the thigh of the care receiver M, the second arm 10 is driven by the gravity generated in the second arm 10 itself as shown in FIG. Needless to say, they rotate together with the tool 28.

  Further, when the cared person M once lifted is lowered, the gravity corresponding to the weight of the cared person M acts on the body holder 3 strongly, so that the second arm 10 is also driven in this case. It will rotate together with the tool 28.

<Summary>
(1) As described above, in this embodiment, the transfer assistance device 100 is configured as follows. That is, the transfer support device 100 includes a carriage 1, an arm portion 2 that is attached so as to be freely tiltable with respect to the carriage 1, and a body holder 3 that is provided on the arm portion 2 and holds the care receiver M. And a third motor 15 as a drive source for the tilting operation of the arm unit 2 and the drive force transmission mechanism D described above. This driving force transmission mechanism D transmits the driving force of the third motor 15 to the body holder 3 while moving the cared person M, while holding the body while not moving the cared person M. The driving force of the third motor 15 is not substantially transmitted to the tool 3. That is, with such a completely new idea, it is possible to avoid the interference of the body holder 3 with the cared person M.

  In the present embodiment, the body holder 3 corresponds to an interference part as a part capable of interfering with the cared person M among the arm part 2 and the body holder 3. However, this is only an example, and depending on the shape of the body holder 3 shown in FIG. 2, both the arm part 2 and the body holder 3 may correspond to the interference part, or the arm part 2. There may be a case where only this corresponds. However, in this embodiment, since the driving force transmission mechanism D is provided in the second joint portion 14, the arm portion 2 corresponding to the interference portion is the second arm 10 of the first arm 9 and the second arm 10. In other words, it is reasonable.

  In the present embodiment, the driving force transmission mechanism D is provided in the second joint portion 14, but instead, a configuration in which the driving force transmission mechanism D is provided in the first joint portion 11 of FIG. 1 is also employed. be able to.

(2) The transfer support apparatus 100 is further configured as follows. That is, as shown in FIG. 7A, the driving force transmission mechanism D is connected to the driving tool 28 provided on the cart 1 side, the second arm 10 provided on the body holding tool 3 side, and the driving tool 28. The driving tool 28 and the second arm 10 are arranged so that the second arm 10 can be contacted in the direction approaching the cared person M (see symbol X) and the driving tool 28 and the second arm 10 can be separated from each other. And a connecting portion R to be connected. According to the above configuration, the driving force transmission mechanism D can be realized with a simple configuration.

(5) Moreover, in the said embodiment, the transfer assistance apparatus 100 drives the body holder 3 holding the care receiver M, the arm part 2 holding the body holder 3, and the arm part 2 to hold the body. The third motor 15 as a drive mechanism for moving the tool 3 in the vertical direction and the driving as a connecting member that prohibits the downward movement of the body holder 3 and allows the upward movement of the body holder 3 A force transmission mechanism D. That is, with such a completely new idea, it is possible to avoid the interference of the body holder 3 with the cared person M.

<Second embodiment>
Next, a second embodiment of the present invention will be described with reference to FIG. In principle, constituent elements corresponding to the constituent elements of the first embodiment are denoted by the same reference numerals. The description will focus on the differences from the first embodiment, and overlapping descriptions will be omitted as appropriate.

  FIG. 9A is an exploded perspective view of the driving force transmission mechanism D according to the present embodiment, and FIG. 9B is a perspective view of the driving force transmission mechanism D in an assembled state, and FIG. FIG. 9 is a cross-sectional view taken along the line CC of FIG. 9B, and FIG. 9D is a partially enlarged view of FIG. 9C. In this embodiment, the notification mechanism as a notification means capable of notifying the caregiver or the cared person M that the avoidance of the interference of the body holder 3 with respect to the cared person M is started by the driving force transmission mechanism D. H is provided.

  That is, as shown in FIG. 9A, the protrusion 30 of the driving tool 28 in the present embodiment is formed so as to be slightly narrower in the axial direction of the shaft 27 than in the first embodiment. ing. Further, as shown in FIG. 9C, the second arm 10 is formed with a pair of thin plate portions 10 b that sandwich the protrusion 30 of the driving tool 28 in the axial direction of the shaft 27. 9B, on the side surface 30b of the protrusion 30 of the driving tool 28 on the cart 1 side, as shown in FIG. 9D, the triangles appear to be arranged in a line in a sectional view. A characteristic first uneven surface 30c is formed. The side surface 30 b is a surface that is substantially perpendicular to the axis of the shaft 27. On the other hand, on the inner surface 10c of the thin plate portion 10b of the second arm 10 on the body holder 3 side, the triangles appear to be arranged in a line in a cross-sectional view, similar to the first uneven surface 30c. A second uneven surface 10d is formed. The inner surface 10c is a surface that is substantially perpendicular to the axis of the shaft 27, like the side surface 30b. The side surface 30b and the inner surface 10c are parallel. The thin plate portion 10 b and the inner surface 10 c face each other in the axial direction of the shaft 27. Further, when the first contact surface 30a of the protrusion 30 of the driving tool 28 is separated from the second contact surface 10a of the second arm 10 and the protrusion 30 moves in the direction of the thick arrow in FIG. The one uneven surface 30c and the second uneven surface 10d can rub against each other. In other words, when the first contact surface 30a of the protrusion 30 of the driving tool 28 is separated from the second contact surface 10a of the second arm 10 and the protrusion 30 moves in the direction of the thick arrow in FIG. The gap between the side surface 30b of the protrusion 30 and the inner surface 10c of the thin plate portion 10b of the second arm 10 is adjusted so that the first uneven surface 30c and the second uneven surface 10d can rub against each other.

  In the present embodiment, the notification mechanism H includes the first uneven surface 30c and the second uneven surface 10d.

  With the above configuration, when the avoidance of the interference of the body holder 3 with the cared person M is started by the driving force transmission mechanism D, the protrusion 30 of the driving tool 28 enters the second arm 10 in FIG. The first uneven surface 30c and the second uneven surface 10d are rubbed with each other in the direction indicated by the thick arrow from the accommodated state. Due to this rubbing, vibrations to the extent that the caregiver or care receiver M notices suddenly occur in the thin plate portion 10b. Similarly, the rubbing generates vibrations in the thin plate portion 10b, and the vibrations generate a sound that can be noticed by the caregiver or the cared person M.

(Summary)
(3) As described above, in this embodiment, the transfer support device 100 is further configured as follows. That is, the transfer support apparatus 100 includes a notification mechanism H that can notify the caregiver or the cared person M that the avoidance of the interference of the body holder 3 with the cared person M is started by the driving force transmission mechanism D. ing. According to the above configuration, it is possible to call attention to a caregiver or care recipient M who is performing an incorrect operation.

(4) The transfer support apparatus 100 is further configured as follows. That is, the notification mechanism H is provided on the first uneven surface 30c provided on the cart 1 side and the body holder 3 side, and avoidance of interference of the body holder 3 with the cared person M is started by the driving force transmission mechanism D. And the second concavo-convex surface 10d that can rub against the first concavo-convex surface 30c. With this configuration, when the first uneven surface 30c and the second uneven surface 10d are rubbed, sound or vibration is generated. By configuring the notification mechanism H with such mechanical means, the transfer support apparatus 100 with low power consumption can be realized.

<Third embodiment>
Next, a third embodiment of the present invention will be described with reference to FIG. In principle, constituent elements corresponding to the constituent elements of the first embodiment are denoted by the same reference numerals. The description will focus on the differences from the first embodiment, and overlapping descriptions will be omitted as appropriate.

  In the first embodiment, the driving force transmission mechanism D is provided in the second joint portion 14 as shown in FIG. However, in the present embodiment, the driving force transmission mechanism D is provided in the middle in the longitudinal direction of the second arm 10 of the arm portion 2. In this case, the driving force transmission mechanism D is configured as follows.

  That is, in the present embodiment, the second arm 10 of the arm portion 2 is configured by two arms, that is, a proximal-side second arm 60 and a distal-side second arm 61 as shown in FIG. Yes. The proximal second arm 60 is supported by the first arm 9 by the second joint portion 14 shown in FIG. On the other hand, the distal end side second arm 61 supports the body holder 3 shown in FIG. A base-side inclined surface 60 a is formed on the surface of the base-side second arm 60 that faces the tip-side second arm 61. Similarly, a distal-side inclined surface 61 a is formed on the surface of the distal-end-side second arm 61 that faces the proximal-end-side second arm 60. The direction of inclination of the base end side inclined surface 60a and the front end side inclined surface 61a is set to a direction that satisfies the vertical relationship such that the front end side second arm 61 is located above the base end side second arm 60. Has been. In short, using FIG. 10A, the base-side inclined surface 60a and the distal-side inclined surface 61a are inclined from the upper left side of the drawing toward the lower right side of the drawing. The base end side second arm 60 and the distal end side second arm 61 are configured such that the link member 62 protruding from the distal end side second arm 61 toward the proximal end side second arm 60 is rotated by the proximal end side second arm 60. The shaft 63 is connected by being rotatably supported.

  In the present embodiment, the base end side second arm 60 corresponds to the “driving unit provided on the cart 1 side”. The distal second arm 61 corresponds to the “driven portion provided on the body holder 3 side”. “The distal end side second arm 61 can contact the proximal end side second arm 60 in a direction approaching the cared person M, and the proximal end side second arm 60 and the distal end side second arm 61 are mutually connected. The connecting portion T that includes the link member 62 and the rotating shaft 63 corresponds to the “connecting portion that connects the proximal second arm 60 and the distal second arm 61 so that they can be separated from each other”. The driving force transmission mechanism D described above is configured by the proximal-end-side second arm 60, the distal-end-side second arm 61, and the connecting portion T.

  In this state, if the caregiver mistakenly operates the operation handle 55 and lowers the body holder 3 too much, the reaction force described above acts on the body holder 3 and the distal-end-side second arm 61 is It shifts from the state supported by the end-side inclined surface 60a to the state supported by the care receiver M's thigh. FIG. 10B shows the above-described vertical relationship in which the distal-side inclined surface 61a of the distal-side second arm 61 is located above the proximal-side inclined surface 60a of the proximal-side second arm 60. Thus, the distal end side second arm 61 starts to rotate counterclockwise relative to the proximal end side second arm 60. The relative counterclockwise rotation of the distal end side second arm 61 can avoid interference of the body holder 3 with the care receiver M's thigh.

  In the present embodiment, the driving force transmission mechanism D is provided in the middle in the longitudinal direction of the second arm 10 of the arm portion 2, but instead, the driving force transmission mechanism D is replaced by the first arm of the arm portion 2. The structure provided in the middle part of 9 longitudinal directions is also employable.

<Fourth embodiment>
Next, a third embodiment of the present invention will be described with reference to FIG. In principle, constituent elements corresponding to the constituent elements of the first embodiment are denoted by the same reference numerals. The description will focus on the differences from the first embodiment, and overlapping descriptions will be omitted as appropriate.

  In the first embodiment, the driving force transmission mechanism D is provided in the second joint portion 14 as shown in FIG. However, in the present embodiment, the driving force transmission mechanism D is provided in the attachment portion 16. In this case, the driving force transmission mechanism D is configured as follows.

  That is, in this embodiment, a slide mechanism S that is parallel to the longitudinal direction of the trunk support portion 19 is provided between the attachment portion 16 and the trunk support portion 19 of the body holder 3. Due to the presence of the slide mechanism S, the body holder 3 is slidable in the vertical direction with respect to the mounting portion 16. In other words, the body holder 3 is slidable in the direction parallel to the spine of the cared person M with respect to the attachment portion 16. In other words, the body holder 3 is slidable with respect to the attaching portion 16 in a direction away from or approaching the thigh of the care receiver M.

  Further, the attachment portion 16 is formed with a support portion 16 a for supporting the body holder 3. The upper surface of the support portion 16a can be contacted from below the supported surface 19a formed on the trunk support portion 19 of the body holder 3, that is, from the thigh side of the care recipient M. A surface 16b is formed.

  In the present embodiment, the mounting portion 16 corresponds to the “driving portion provided on the cart 1 side”. The body holder 3 corresponds to the “driven portion provided on the body holder 3 side”. And, “the attachment portion 16 and the body holding member 16 can be held so that the attachment portion 16 can come in contact with the care receiver M in a direction approaching the cared person M and the attachment portion 16 and the body holding device 3 can be separated from each other. The slide mechanism S corresponds to the “connecting portion that connects the tool 3”. And the driving force transmission mechanism D mentioned above is comprised by the attaching part 16, the body holder 3, and the slide mechanism S. FIG.

  In the state shown in FIG. 11, if the caregiver mistakenly operates the operation handle 55 and lowers the body holder 3 too much, the reaction force described above acts on the body holder 3 and the body holder 3 It shifts from the state supported by the attachment part 16 as shown in FIG. 11 to the state supported by the care receiver M's thigh. And the supported surface 19a of the trunk | body support part 19 of the body holder 3 is above the support surface 16b of the support part 16a of the attachment part 16, Thanks to the said vertical relationship, with respect to the body holder 3 An operation in which the mounting portion 16 is lowered alone is allowed. Thus, since the operation | movement which the attachment part 16 descend | falls independently with respect to the body holder 3 is accept | permitted, it becomes possible to avoid the interference of the body holder 3 with respect to the thigh of the care receiver M. ing. In addition, said "independently" means "independently on the premise that it pays attention only to two components of the body holder 3 and the attaching part 16."

  The preferred embodiments of the present invention have been described above.

  Hereinafter, the above-mentioned Patent Document 1 will be supplemented. In the configuration of the above-mentioned Patent Document 1, the operation of the hand switch is a mental burden because it requires considerable skill regardless of whether the operator is a caregiver or a patient. This will cause interference with the thigh. Further, in the method using the above-described swing switch, there is a possibility that the operation of the arm drive mechanism may not be stopped at all due to a failure of the swing switch. On the other hand, it is conceivable to install a configuration that backs up the failure of the swing switch, but as a result, the apparatus becomes complicated and expensive. In the first place, it cannot be said that there is no defect in the installation of the swing switch. Furthermore, various problems due to the use of the above-described swing switch will occur similarly even when a contact sensor or the like is used instead of the swing switch. As another method for avoiding the interference between the arm and the patient's thigh, it may be possible to limit the lowering of the arm itself by some means. However, since this method is based on the premise that the patient has a certain physique, a problem occurs when the patient is small or large. more than.

DESCRIPTION OF SYMBOLS 1 Carriage 2 Arm part 3 Body holder 10 2nd arm 15 3rd motor 28 Drive tool 100 Transfer assistance apparatus

Claims (3)

Cart,
An arm portion attached so as to be freely tiltable with respect to the carriage,
A body holding portion provided on the arm portion for holding a care recipient;
A driving force source for tilting the arm,
While the cared person is moved, the driving force of the driving force source is transmitted to the body holding part, and while the cared person is not moved, at least one of the arm part and the body holding part. A driving force transmission mechanism that does not transmit the driving force of the driving force source to either of them
Equipped with a,
The driving force transmission mechanism is
A drive unit provided on the cart side;
A driven part provided on the body holding part side;
The driving unit and the driven unit come into contact with each other while the cared person is moved, thereby transmitting the driving force of the driving force source to the arm unit, and while the cared person is not moved, A connecting portion that connects the driving portion and the driven portion so as not to transmit the driving force of the driving force source to the arm portion by being separated from each other by the driving portion;
The connecting portion is configured such that the driving portion and the driven portion are separated by a reaction force that acts on the body holding portion from the care receiver, equivalent to the gravity applied to the arm portion while the care receiver is not moved. Connecting the drive unit and the driven unit;
The drive unit has a protrusion,
The driven portion has a second contact surface that can contact the first contact surface of the protrusion,
The connecting portion is configured such that the first contact surface and the second contact surface are in contact with each other while the care receiver is moved, and the first contact surface and the second contact surface are separated from each other while the care receiver is not moved. A transfer support apparatus, wherein the drive unit and the driven unit are connected . The connecting portion is
When the body holding part is not in contact with the cared person, the driving part and the driven part are coupled so that the driving part and the driven part are brought into contact by gravity applied to the arm part,
The connecting portion connects the driving portion and the driven portion so that the driving portion and the driven portion are brought into contact with each other by gravity applied to the arm portion and the care receiver while the care receiver is moved. The transfer support apparatus according to claim 1 . To the operator of the transfer support device or the care receiver that the driving force transmission mechanism has not transmitted the driving force of the driving force source to either the arm unit or the body holding unit. Provided with an informing means for informing,
The notification means includes a first uneven surface provided on the cart side,
When the driving force of the driving force source is not transmitted to any one of the arm part and the body holding part by the driving force transmission mechanism provided on the body holding part side, the first Including a second uneven surface that rubs against the uneven surface,
The transfer support apparatus according to claim 1 or 2 .

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