JP4577570B2 - Elevating device for vehicle - Google Patents

Description

  The present invention connects a lifting frame for supporting a mounting body for mounting and supporting a wheelchair, a base frame provided on a vehicle, and the lifting frame to position the mounting body on or near the ground. A drive elevating link mechanism capable of elevating and lowering the elevating frame in a parallel posture or a substantially parallel posture over a lowered state and a raised state in which the mounting body is positioned at the same height or substantially the same height as the floor of the vehicle; And when the lifting frame is in the raised state, the mounting body is moved horizontally between an outer position located on the outer side of the vehicle and an inner position located on the inner side of the vehicle. It is configured to be freely supported by the elevating frame, and extends downward from the upper side of the user's shoulder seated on the wheelchair placed and supported by the mounting body, and restrains the upper body of the user. For vehicles with seat belts that can be worn freely On later devices.

  The above-described vehicle lifting device is configured such that a wheelchair is placed on a mounting body while a user is sitting on the wheelchair, and the wheelchair is transferred from the ground side to the floor of the vehicle, or from the floor of the vehicle to the ground. The upper body of the user seated on the wheelchair can be restrained by the seat belt when traveling with the wheelchair mounted on the vehicle. .

  In such a vehicular lifting apparatus, conventionally, the seat extends downward from a position above the position corresponding to the shoulder of the user seated on the wheelchair placed and supported on the mounting body. There has been a seatbelt support frame for supporting a belt that is provided in a fixed state at a location on the vehicle outer side of the above-described mounting body (see, for example, Patent Document 1).

JP 2004-229723 A

  In the above conventional configuration, the seat belt support frame is provided on the mounting body, and the seat belt support frame corresponds to the shoulder of the user who sits on the wheelchair from the surface of the mounting body. Since it is configured as a large apparatus that is long in the vertical direction and extends to a position higher than the position above the position, the weight is large.

  As a result, the mounting body needs to support not only the weight of the wheelchair on which the user is seated, but also the weight of the support frame for the seat belt. The weight of the mounting body must be increased, and the support strength of the lifting frame that supports the mounting body so that it can be moved in the horizontal direction and the link mechanism that supports the lifting frame can be raised and lowered is increased. In addition, there is a disadvantage that the structure becomes complicated and the cost is increased, such as using a large actuator for raising and lowering the link mechanism.

  Therefore, in order to eliminate the disadvantages as described above, it is conceivable to provide the seat belt support frame in a fixed position inside the vehicle instead of providing it on the mounting body. With this configuration, the wheelchair must be housed inside the vehicle and the seat belt must be attached and removed in a limited space, which makes it difficult to attach and remove the seat belt. There is.

  An object of the present invention is to provide a vehicle elevating device that can reduce the cost by simplifying the structure while being able to easily attach and detach the seat belt.

A vehicle lifting apparatus according to the present invention connects a lifting frame for supporting a mounting body for mounting and supporting a wheelchair, a base frame provided on the vehicle, and the lifting frame, so that the front and the rear are on or near the ground. The lifting frame can be raised and lowered in a parallel posture or a substantially parallel posture over a lowered state in which the placement body is positioned and a raised state in which the previous placement body is positioned at the same height or substantially the same height as the floor of the vehicle . In addition, the lifting frame is moved to the vehicle outer side with the lowering operation of the lifting frame to the lowering state, and the lifting frame is moved to the vehicle inner side with the lifting operation of the lifting frame to the rising state. And when the lifting frame is in the raised state, the above-mentioned mounting body is positioned on the outer side of the vehicle and on the inner side of the vehicle. It is supported by the lifting frame so that it can be moved horizontally in an inward position. The seat is configured to be configured and configured to extend from the upper side to the lower side of the user's shoulder seated on the wheelchair placed and supported by the mounting body, and can be mounted in a restraining action state that restrains the upper body of the user. A belt is provided, and a first characteristic configuration thereof extends downward from a position above a height corresponding to a shoulder of a user sitting on a wheelchair placed and supported on the mounting body. A seat belt support frame for supporting the seat belt in a state is provided on the elevating frame, and belt support means for supporting the seat belt in a state in which the seat belt is allowed to extend is provided for the seat belt. The seatbelt support frame is provided on the lifting frame so that the seatbelt support frame is positioned on the right side of the wheelchair placed and supported on the mounting body, and the lower end of the seatbelt is detachable Receptacle for holding is in that provided in the prior described mounting body so as to be positioned on the left side of the placement supported wheelchair before described mounting body.

  According to the first characteristic configuration, since the seat belt support frame is provided on the lifting frame, the mounting body has a higher support strength than the configuration in which the seat belt support frame is provided on the mounting body. As a small and simple configuration, the weight can be reduced. Further, the lifting frame has a high support strength for supporting the mounting body so as to be movable in the horizontal direction. There is no need to greatly change the structure of the frame, and the weight of the mounting body makes it possible to reduce the support strength of the link mechanism that supports the mounting body. It is possible to reduce the cost by simplifying the structure, for example, by using a small actuator with a small output for the driving elevator for driving up and down.

  The lifting frame can be moved up and down by a link mechanism between a lowered state in which the mounting body is positioned on or near the ground and a rising state in which the mounting body is positioned at the same height or substantially the same level as the floor of the vehicle. Since it is supported and supports the mounting body so as to be movable in the horizontal direction, when the lifting frame is in the lowered state, the lifting frame and the seat belt support frame provided on it are It will be in the state located in the outward side of a vehicle.

  And the work of attaching the seat belt and the work of removing the seat belt are performed when the wheelchair is placed and supported on the placing body with the lifting frame in the lowered state. It is possible to easily perform the attaching operation and the removing operation of the seat belt in the open space outside the vehicle.

Accordingly, it has become possible to provide a vehicle elevating device that can reduce the cost by simplifying the structure while being able to easily attach and detach the seat belt.
Further, according to the first characteristic configuration, when performing the work of wearing the seat belt, the seat belt supported by the belt support means is above the height corresponding to the shoulder of the user sitting on the wheelchair. The lower end portion of the seat belt, that is, the front end side portion of the seat belt is held by a receiving tool provided on the mounting body. In other words, since the operation can be performed by pulling the seat belt downward, the seat belt can be easily attached.

According to a second characteristic configuration of the present invention, in addition to the first characteristic configuration, the elevating frame receives and supports the mounting body so as to be relatively movable in the horizontal direction, and a receiving support portion of the receiving support portion. A pair of left and right arms extending in a vertical orientation from both lateral sides and connected to the link mechanism, and the support frame for the seat belt is comprised of the pair of left and right arms It exists in the point provided in the upper part location of the arm part on the right side.

According to the second characteristic configuration, the elevating frame receives and supports the mounting body so as to be relatively movable in the horizontal direction by a receiving support portion supported by a pair of left and right arm portions connected to the link mechanism. The mounting body can be stably supported. Since the seat belt support frame is provided at the upper portion of the right arm portion of the pair of left and right arm portions extending in a vertical orientation, the seat belt support frame is provided. Is capable of supporting the seat belt in a state of extending downward from a position above the height corresponding to the shoulder corresponding to the user seated in the wheelchair, while shortening the length in the longitudinal direction. A simple configuration can be achieved.

  Accordingly, it has become possible to provide a vehicle elevating device that can easily simplify the structure while being able to easily attach and detach the seat belt.

According to a third characteristic configuration of the present invention, in addition to the first or second characteristic configuration, the seat belt support frame has a lower end portion of the seat belt when the mounting body is in the inward position. wherein in a state in which the receptacle is mounted in a position which becomes the restraining action state as the seat belt is supported, in that it is provided in a position fixed state to the elevator frame.

According to the third characteristic configuration, when the mounting body is located at the outer position, the mounting body is moved to the vehicle outer side from the inner position toward the horizontal direction. Even when the lower end of the seat belt is attached to a receiving device provided on the mounting body, the support frame is in a state of being spaced apart in the horizontal direction with respect to the wheelchair mounted and supported on the mounting body. Although it cannot be in the restraining action state, when the mounting body is located at the inward position, the seat belt support frame supports the seat belt at a position where the restraining action state is established. Therefore, when the mounting body is moved in the horizontal direction from the outer position toward the inner position in a state where the lower end portion of the seat belt is attached to the receiving member, the seat belt is mounted and supported by the mounting body. The wheelchair and the user seated on it also move toward the inside of the vehicle Runode, it is possible to properly restrained operative position as described above. When the horizontal movement operation of the mounting body is performed, since the vehicle stops traveling, it is not necessary to restrain the upper body of the user with a seat belt.

  In addition, by providing a seat belt support frame in a fixed position on the lifting frame, for example, a simpler structure than that configured to support the seat belt support frame movably with respect to the lifting frame. Therefore, the structure can be simplified.

  Accordingly, when the vehicle is driven with the mounting body positioned in the inward position by using a support structure that supports the mounting body to the lifting frame so as to be movable in the horizontal direction, the seat belt is properly restrained. It has become possible to provide a vehicle elevating device that can be simplified in structure while being able to be made.

The fourth characteristic configuration of the present invention, in addition to the third feature structure, freely switched between a locked state that prevents the allowable state and feeding to allow feeding of said seat belt, and the lock from the allowable state by vibration A feeding prevention means that switches to a state, a checking state that checks that the feeding prevention means switches from the allowed state to the locked state, and a check release state that allows the switch from the allowed state to the locked state. Switchable switching means, and switching means for switching the checking means to the checking state when a horizontal movement operation of the mounting body is performed in a state where the wheelchair is placed and supported on the mounting body. Is in the point that is provided.

According to the fourth characteristic configuration, when the check means is in the check release state, the feeding prevention means is allowed to switch from the allowable state to the locked state. Therefore, when the wheelchair is loaded on the vehicle and the vehicle is traveling, if the body of the user seated on the wheelchair is shaken by the vibration of the vehicle, the feeding prevention means is switched to the locked state. A user seated in a wheelchair can be restrained by a seat belt.

  When the wheelchair is placed on the placing body and the placing body is moved and operated in the horizontal direction across the outer position and the inner position with respect to the lifting frame, the restraining means is in the restraining state. Since it is switched, it is restrained that the feeding prevention means switches from the allowable state to the locked state. As a result, in the state where the wheelchair is placed and supported on the placing body, even if the placing body is vibrated while the placing body is moving in the horizontal direction, the feeding prevention means is locked. There is no switching.

  In other words, with the lower end of the seat belt extended from the seat belt support frame provided on the lifting frame attached to the support provided on the placement body, the mounting body is removed. In such a configuration that the seat belt can be brought into a restraining action state by moving in the horizontal direction from the lateral position toward the inward position, the mounting body is moved in the horizontal direction from the outward position toward the inward position. When the vehicle is moving, the seat belt may be extended, and the seat belt may be restrained while being extended from the seat belt support frame.

  In such a case, if the feeding prevention means is allowed to switch to the locked state, the feeding of the seat belt is prevented by the occurrence of vibration, and the moving wheelchair and the seat belt from which the feeding is prevented However, as described above, when the mounting body is moved and operated in the horizontal direction, the check means is switched to the check state, and the feeding prevention means is Since switching from the permitted state to the locked state is restrained, the disadvantage that the user seated in the wheelchair is accidentally pinched by the wheelchair moving in the horizontal direction and the seat belt prevented from being extended is avoided. It can be done.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a vehicle lifting apparatus according to the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the vehicle lifting device is mounted on the rear portion of a vehicle V such as a van-type automobile having an opening / closing door D that opens and closes in the vertical direction. It is used.

  This vehicular lifting device connects a lifting frame 2 for supporting a mounting body 1 for mounting and supporting a wheelchair, a base frame 7 provided on the vehicle, and the lifting frame 2 on or near the ground. The raising / lowering frame 2 is moved up and down in a parallel posture or a substantially parallel posture over the lowered state in which the mounting body 1 is positioned and the raised state in which the mounting body 1 is positioned at the same height or substantially the same height as the vehicle floor. When the lifting / lowering frame 2 is in the raised state, the mounting body 1 is located on the outer side of the vehicle and on the inner side of the vehicle. Of the wheelchair passenger A as a wheelchair user who is configured to be supported by the lifting frame 2 so as to be movable and movable in the horizontal direction over a certain position and seated on the wheelchair placed and supported on the mounting body 1 It is installed in a restrained action state that extends downward from above the shoulder and restrains the upper body of the user. Closable seat belt 45 is provided.

  For a seat belt for supporting the seat belt 45 in a state of extending downward from a position above the height corresponding to the shoulder corresponding to the shoulder of the wheelchair passenger A seated on the wheelchair placed and supported on the mounting body 1 described above. A support frame 46 is provided on the lifting frame 2.

  And the said elevating frame 2 is extended in the vertical attitude | position from the receiving support part 3 which receives and supports the said mounting body 1 so that relative movement is possible in the horizontal direction, and the both lateral sides of the receiving support part 3. And a pair of left and right arm portions 6 coupled to the link mechanism 4, and the seat belt support frame 46 is an upper portion of one arm portion 6 of the pair of left and right arm portions 6. It is provided in the side part.

Details of each device and member will be described below.
In other words, the vehicle lifting apparatus is configured such that the entire apparatus is supported in a cantilever manner on a base frame 7 provided in the vehicle via a pair of left and right parallel quadruple link mechanisms 4 as the link mechanism 4. As shown in FIGS. 2 and 3, the base frame 7 includes a pair of left and right base plates 11 attached on the floor F of the vehicle V, and a connecting frame 12 that connects the pair of left and right base plates 11. Each of the pair of left and right base plates 11 is provided with a vertical connection bracket 8 in a fixed state.

  As shown in FIG. 4, the left and right parallel quadruple link mechanism 4 has one end portion of the upper link 9 and the lower link 10 pivotally connected to a connection bracket 8 provided on the base frame 7 via pins 11a and 12a. The other ends of the upper link 9 and the lower link 10 are pivotally connected to the arm side bracket 13 via pins 11b and 12b, respectively. The arm side brackets 13 of the left and right parallel quadruple link mechanisms 4 are connected and fixed to the left and right arm portions 6 and 6 of the elevating frame 2, respectively. As shown in FIG. 1, the left and right parallel quadruple link mechanisms 4 and 4 are covered with a link cover 14.

  A through hole is provided in the left wall surface of the left link cover 14 of the left and right link covers 14, and the lower link 10 is pivotally supported with respect to the connecting bracket 8 on the base frame side through the through hole. A pin 12 a extends to the outside of the link cover 14. As shown in FIG. 4, the encoder bracket 43 is erected on the left base plate 11 on the left base frame 11 on the left outer side of the machine frame side bracket 8, and the encoder bracket 43 responds to the rotation of the pin 12a. A rotary encoder 15 for outputting pulses.

  Further, a pair of left and right hydraulic cylinders 5 are provided as actuators for driving and raising / lowering each of the left and right parallel quadruple link mechanisms 4 respectively. The hydraulic cylinders 5 are reciprocating cylinders. As shown in FIG. 4, the cylinder body side is pivotally connected to a pin 12 a pivotally supporting the lower link 10 with respect to the base frame side bracket 8, and the cylinder rod side is The arm-side bracket 13 is pivotally connected to a pin 11b that pivotally supports the upper link 9. Incidentally, the pair of hydraulic cylinders 5 are of the same specification.

  The pair of left and right hydraulic cylinders 5 are expanded and contracted to move the lifting frame 2 up and down while maintaining the horizontal posture or the substantially horizontal posture by the action of the parallel quadruple link mechanism 4. FIG. As shown in (a), while the mounting body 1 is moved to the rear side of the vehicle V, the vehicle V is grounded on the ground G or lowered to the vicinity of the ground G, and the vehicle V while the mounting body 1 is raised. As shown in FIG. 12 (b), the vehicle V can be moved up and down over the outer position X2 that is raised to substantially the same height as the floor F of the vehicle V.

  The state in which the mounting body 1 is in the lowered position X1 corresponds to the state in which the lifting frame 2 is switched to the lowered state in which the mounting body 1 is positioned on or near the ground. The state at the position X2 corresponds to the state in which the lifting frame 2 is switched to the raised state.

The mounting body 1 is supported so as to be movable in the horizontal direction with respect to the lifting frame 2.
That is, as shown in FIG. 5, the lifting frame 2 is provided with a receiving support portion 3 for supporting the mounting body 1 at the lower ends of a pair of left and right arm portions 6, 6. The receiving support portion 3 includes a bottom portion 3a positioned below the mounting body 1 and vertical wall portions 3b and 3b positioned on both left and right sides of the bottom portion 3a, and is positioned on the left side when viewed from the rear side. A plurality of sliding idle rollers 17 rotating around the horizontal axis are attached to the vertical wall 3b, and a plurality of sliding idle rollers 17 rotating around the horizontal axis are attached to the right vertical wall 3b. In addition, a plurality of guide idler rollers 20 rotating around the vertical axis and a sliding electric motor 19 having a pinion gear 18 are attached.

  The mounting body 1 is formed in a rectangular shape in plan view, and a left rail member 21 is provided on the left side thereof, and a right rail member 22 is provided on the right side thereof. A sliding idler roller 17 provided on the left side of the receiving support portion 3 is fitted in the left rail member 21 provided in the mounting body 1, and the receiving support portion 3 of the right rail member 22 is fitted. The slide idle roller 17 and the guide idle roller 20 provided on the right side are configured to be fitted inside, and the left rail portion 21 and the right rail portion 22 are formed in slightly different shapes.

  Then, as shown in FIGS. 6 and 7, the mounting body 1 is slidably held in the front-rear direction with respect to the receiving support portion 3 by a plurality of sliding idle rollers 17 provided on the receiving support portion 3. In addition, the guide idler roller 20 is configured to prevent the placing body 1 from rolling to the receiving support portion 3. In addition, on the left and right side portions of the mounting body 1, rail idle rollers 23 that rotate around the horizontal axis and roll on rails 25 provided on the vehicle V side are provided.

  A rack 24 is fixed to the right rail member 22 so as to be fitted therein, and a pinion gear 18 provided in the slide electric motor 19 is engaged with the rack 24 so that the mounting table 3 is positioned at the floor surface position. In this state, when the slide electric motor 19 is driven to rotate forward and backward, the rail idler roller 23 provided on the mounting body 1 rolls on the pair of left and right rails 25 provided on the vehicle V side. It moves and the said mounting body 1 is comprised so that it may move to a horizontal direction with respect to the receiving support part 3. As shown in FIG.

  That is, when the mounting body 1 is located at the outward position X2 shown in FIG. 12B, that is, when the lifting frame 2 is in the raised state, the mounting body 1 is received and supported with respect to the support portion 3. By moving in the horizontal direction toward the vehicle inward direction, the mounting body 1 can be switched to an inward position X3 (see FIG. 12C) stored in the vehicle. The inward position X3 corresponds to an inward position where the mounting body 1 is located on the inward side of the vehicle. At this inward position X3, the rail idler roller 23 is fitted between the vibration prevention member 26 provided in the forefront of the rail 25 and the rail 25 so that the mounting body 1 is vibrated in the vertical direction. The structure is prevented. In the up-and-down state in which the mounting body 1 is moved up and down, it is supported in a cantilever state by the pair of left and right parallel quadruple link mechanisms 4 and 4 via the receiving support portion 3.

  As shown in FIG. 5, a plate-like front receiving body 27 is pivotally attached to the front end portion of the bottom 3 a of the receiving support section 3, and the front receiving body 27 is mounted on the mounting body 1. With the sliding movement of the receiving support 3, the storage posture is switched between a substantially horizontal storage posture and an upright swinging posture. When the mounting body 1 is slid forward, the storage posture is achieved. When the mounting body 1 is slid rearward, it is configured to be in a standing posture.

  A rear receiving body 28 is pivotally attached to the rear end of the mounting body 1 so that the wheelchair C moves outward from the mounting body 1. A blocking posture in which the wheelchair C is erected and swung upward to prevent it from being received, an allowable posture in which the wheelchair C is tumbled and swung toward the rear side to allow the wheelchair C to move rearward and outward, and storage It is configured to be switchable to a retracted posture that is tilted and swung forward, and as will be described later, a blocking posture, an allowable posture, and a retractable position are actuated by the operation of an electric motor 36 for the rear receiving body controlled by the control device H as will be described later. It is configured to automatically switch to each posture. The rear receiving body electric motor 36 can also be operated by operating the manual operation lever 42.

  A fixing device 44 for fixing the wheelchair C to the mounting body 1 is provided on the mounting body 1, and a space for mounting the caregiver B on the left side of the wheelchair C fixed to the mounting body 1 by the fixing device 44 is provided. It is comprised so that it may be formed, the wheelchair passenger A is mounted in the wheelchair C fixed to the mounting body 1, and the caregiver B is mounted in the space of the left side, The mounting body 1 The wheelchair occupant A and the caregiver B can be placed side by side in the horizontal direction.

  A seat belt support frame 46 for attaching the seat belt 45 is provided in a fixed position at an upper portion of the arm portion 6 located on the right side of the elevating frame 2. In other words, as shown in FIG. 3, the seat belt support frame 46 includes a vertically long rectangular tube frame 50, and the frame 50 is welded and fixed to a lower end portion of the bracket 51. Are fastened to the upper side portion of the right arm portion 6 with bolts. Further, a belt that holds the seat belt 45 in a permissible state permitting outward feeding and a switchable state that can be switched to a locked state that prevents the feeding out at a middle position on the lower side of the frame 50. A holding device 52 is attached.

The frame 50, the belt holding device 52, and the like are configured to be covered with a cover 53, and the seat belt 45 can be pulled out from a belt feeding position that is formed in an upper position on the cover 53. It has become.
Further, a receiving tool 54 that holds and holds the leading end portion of the fed-out seat belt 45 is provided on the left side of the mounting body 1 on the vehicle body outer side.

  As shown in FIG. 10, the belt holding device 52 includes a belt winding mechanism 60 as a belt supporting means that winds and supports the seat belt 45 in a state where the seat belt 45 can be fed, and a seat belt from the belt winding mechanism 60. A lock mechanism 61 that can be switched between a locked state that prevents the 45 belt from being extended and an allowable state that allows the seat belt 45 to be extended, and that switches from the allowed state to the locked state when vibrations occur. It is configured with.

  In other words, the belt holding device 52 includes a take-up drum 55 that can take up the seat belt 45 and is rotatable, a take-up electric motor 56 that rotates the take-up drum 55, and a take-up drum 55. A ratchet gear 57 that rotates integrally with the ratchet gear 57, a claw member 58 that can be switched between a locked state that meshes with the ratchet gear 57 and a released state that releases the meshing, and the claw member 58 that is subjected to vibrations during vehicle travel. The vibration detecting body 59 and the like that are switched to the locked state by pressing are configured. The seat belt 45 can be taken up by rotating the take-up electric motor 56, and the extension of the seat belt 45 can be prohibited by engaging the claw member 58 with the ratchet gear 57. It has become.

  Accordingly, the belt winding mechanism 60 is configured by the winding drum 55 and the winding electric motor 56, and the lock mechanism 61 is configured by the ratchet gear 47, the claw member 58, the vibration detector 59, and the like. Is configured. When the claw member 58 meshes with the tooth portion 57a of the ratchet gear 57, the claw member 58 prevents the seat belt 45 from rotating in the direction in which the seat belt 45 is unwound from the take-up drum 55. It is configured to allow rotation.

  The vibration detector 59 is not described in detail, but for example, a sphere is stored in an arc-shaped storage container, and when vibration occurs, the sphere moves and pushes up the lid to lock the claw member 58. It is the structure which switches to.

  A lock restraining device 62 as a restraining means capable of switching between a restraining state for restraining the switching of the lock mechanism 61 from the permitted state to the locked state and a restraining releasing state permitting the switching from the permitted state to the locked state; In the state where the wheelchair is placed on and supported by the mounting body 1, when the lifting operation of the lifting frame 2 and the horizontal movement operation of the mounting body 1 are performed, switching means for switching the lock checking device 62 to the checking state. 100.

  That is, as shown in FIG. 11, the electromagnetic operation can be switched between an allowable state in which the claw member 58 in the belt holding device 52 is allowed to be switched to a locked state and a check state in which the switching is prevented from being switched to the locked state. A locking device 62 of the type is provided. The lock restraining device 62 enters the movement locus of the claw member 58 and prevents it from engaging with the ratchet gear 57, and the claw member 58 is engaged with the ratchet gear 57 out of the movement locus of the claw member 58. There is provided a check operating tool 63 that is slidably movable over a retracted position that permits the movement, and a spring 64 that urges the check operating tool 63 to move to the retracted position, and a check against the biasing force of the spring 64 by an electromagnetic operating force. The operation tool 63 is configured to include an electromagnetic solenoid 65 that can be switched to an operating position.

  Therefore, the lock check device 62 switches the check operation tool 63 to the operating position by energizing the electromagnetic solenoid 65, so that the lock mechanism 61 can be switched from the allowable state to the lock state even if vibration or the like occurs. You can check.

  In addition, since the above-described mounting body 1 allows the wheelchair occupant A and the caregiver B to be placed side by side in the lateral direction, the seat belt 45 can be easily detached from the wheelchair occupant A by the adjacent caregiver B. It is configured as follows. In addition, when the mounting body 1 is moved up and down, the caregiver B usually gets off the mounting table 3.

Next, a hydraulic circuit for extending and contracting the pair of hydraulic cylinders 5 will be described.
As shown in FIG. 8, the hydraulic pump P and the shortened cylinder chamber 5a of each of the pair of hydraulic cylinders 5 are communicated with each other through a forward oil passage 31, and the hydraulic pump P and the extended cylinder chamber of each of the pair of hydraulic cylinders 5 are connected. 5 b communicates with the oil passage 32 for the reverse direction. A pilot type check valve 33 that allows the hydraulic oil 5 to flow to the hydraulic cylinder 5 side in each of the forward direction oil path 31 and the reverse direction oil path 32 and that allows back flow by the pilot pressure, and a throttle mechanism and a check mechanism A flow control valve 34 comprising a valve is provided. A relief valve 35 is provided in the oil passage that communicates the forward oil passage 31 and the reverse oil passage 32 with the oil tank.

  The hydraulic pump P is composed of a pump that can rotate in both forward and reverse rotation directions. A pump electric motor M that can be driven forward and reverse is linked to the hydraulic pump P. Accordingly, when the pump electric motor M is driven to rotate forward, the hydraulic oil is supplied to the shortened cylinder chamber 5a of the hydraulic cylinder 5 through the forward oil passage 31 by the hydraulic pump P, and the hydraulic cylinder 5 is shortened. When the pump electric motor M is driven in reverse, the hydraulic oil is supplied to the extension side cylinder chamber 5b of the hydraulic cylinder 5 via the reverse oil passage 32 by the hydraulic pump P, and the hydraulic cylinder 5 is extended. ing.

  As shown in FIG. 9, the vehicle elevating device having such a configuration is configured such that the pump electric motor M, the slide electric motor 19, and the rear receiving body electric are controlled by a control device H configured using a microcomputer. The operation of the motor 36, the winding electric motor 56, the lock check device 62, and the like are all controlled, and the control device H includes a pulse signal from the rotary encoder 15 and a manual pendant type operation. The operation signal from the tool 47 is input. The pendant operation tool 47 is provided on the left arm portion 6.

  Next, the processing procedure of the user and the control operation of the control device H when the wheelchair C is transferred from the ground G into the vehicle V and when the wheelchair C is transferred from the vehicle V to the ground G will be described.

  The case where the wheelchair C is transferred from the ground G into the vehicle V will be described. The pendant-type operation tool 47 in a state where the mounting body 1 is in the lowered position X1 and the rear receiving body 28 is in the blocking posture. By pressing the opening button 47c, the control device H operates the rear receiving body electric motor 36 to switch the rear receiving body 28 from the blocking posture to the allowable posture.

  In a state where the rear receiving body 28 is in an allowable posture, the wheelchair is moved on the mounting body 1 to be placed and supported, and the seat belt 45 is fed out from the support frame 46 for the seat belt, and the lower end of the front end of the seat belt 45 The part is fixedly held by the receiving tool 54 and mounted (see FIG. 12A). The caregiver B can perform the work of placing the wheelchair C on the placing body 1 and the work of wearing the seat belt 45.

  At this time, since the wheelchair C is in a position horizontally spaced from the seatbelt support frame 46, the seatbelt 45 is extended from the seatbelt support frame 46 located away from the wheelchair C. The upper end of the wheelchair occupant A is not restrained, but when the wheelchair C is outside the vehicle V, the lower end of the seat belt 45 is locked and held on the receiving device 54. Can do.

Thereafter, when the ascending button 47b of the pendant type operation tool 47 is pushed, the control device H executes the following control.
That is, when the raising button 47b is pushed, first, the electromagnetic solenoid 65 in the lock restraining device 62 is energized to switch the restraining operation tool 63 to the operating position. Thereafter, the rotational driving force by the winding electric motor 56 is adjusted so as to be an operation force suitable for the winding operation of the seat belt 45, and the winding operation of the seat belt 45 is executed.

  Then, after operating the rear receiving body electric motor 36 to switch the rear receiving body 28 from the allowable posture to the blocking posture, the pump electric motor M is rotationally driven, and the pair of left and right hydraulic cylinders 5 are supplied by supplying hydraulic oil. And the parallel quadruple link mechanism 4 causes the mounting body 1 to move upward from the lowered position X1 toward the outward position X2 while moving forward in a substantially horizontal posture. When it rises to a preset set height near the outward position X2, the rotational drive speed of the pump electric motor M is decelerated and gently raised to the outward position X2 to stop.

  Thereafter, the slide electric motor 19 is driven to rotate the pinion 18. As a result, the mounting body 1 is pushed inward by the action of the pinion 18 and the rack 24, and the mounting body 1 moves horizontally from the outer position X2 to the inner position X3 and stops. To do. When the mounting body 1 stops at the inward position X3, the energization to the electromagnetic solenoid 65 in the lock restraining device 62 is stopped, and the restraining operation tool 63 is switched to the retracted position.

  When the mounting body 1 is positioned at the inward position X3, the seat belt 45 is then moved from above the shoulder of the wheelchair passenger A sitting on the wheelchair C mounted and supported on the mounting body 1. It becomes a restraining action state that extends downward and restrains the upper body of the wheelchair passenger A.

  Next, the case where the wheelchair C is transferred from the vehicle V onto the ground G will be described. As shown in FIG. 12C, the pendant type operation is performed with the mounting body 1 positioned at the inward position X3. When the lowering button 47a of the tool 47 is pushed and operated, the control device H executes the following control.

  First, the electromagnetic solenoid 65 in the lock check device 62 is energized to switch the check operating tool 63 to the operating position. Then, the slide electric motor 19 is driven to rotate the pinion 18, and by the action of the pinion 18 and the rack 24, the mounting body 1 is moved horizontally to the outward position X 2 shown in FIG. Stop later. Thereafter, the electric motor M for the pump is rotated, and the pair of left and right hydraulic cylinders 5 are shortened by supplying the hydraulic oil, so that the mounting body 1 is operated as shown in FIG. When the vehicle is lowered while moving rearward from the outer position X2 shown in FIG. 3 to the preset lowering height near the lowering position X1, the rotational driving speed of the electric motor M for pump is reduced. Gently descend to the lowered position X1 and stop. When the mounting body 1 stops at the lowered position X1, the energization to the electromagnetic solenoid 65 in the lock restraining device 62 is stopped, and the restraining operation tool 63 is switched to the retracted position.

  Accordingly, the control device H is configured to control the lock restraining device 62 so as to switch to the restraining state when the horizontal movement operation of the mounting body 1 is being performed. Will be configured.

  As described above, since the lock restraining device 62 is switched to the restrained state when the placing body 1 is horizontally moved, the placing body 1 is moved especially in the horizontal direction. When the body 1 is moved in the horizontal direction from the outer position X2 to the inner position X3, the seat belt 45 is extended and the seat belt 45 is extended from the seat belt support frame 46 to be in a restraining action state. There are cases. For example, the seat belt 45 may be pulled out depending on the physique of the wheelchair passenger A sitting in the wheelchair, the shape of the wheelchair, or the position of the support 54. Thus, even when the belt holding device 52 may vibrate when the seat belt 45 is extended from the seat belt support frame 46 when the mounting body 1 moves in the horizontal direction, the lock restraint device Since 62 is switched to the check state, the feeding of the seat belt 45 is prevented and the wheelchair occupant A is not sandwiched between the seat belt 45 and the wheelchair.

[Another embodiment]
Hereinafter, other embodiments are listed.

(1) In the above-described embodiment, the seat belt support frame is provided in a fixed position at an upper portion of either one of the pair of left and right arm portions in the lifting frame 2. Although illustrated, it is good not only as such a structure but as a structure provided in the lower part location of an arm part.

  Further, the seat belt support frame 46 is not limited to the configuration in which the seat frame support frame 46 is fixed in position, but can be moved horizontally along the same direction as the horizontal movement direction of the mounting body 1 with respect to the lift frame 2. It is good also as a structure to provide. In such a manner that it can be moved horizontally, for example, as a configuration in which the horizontal movement operation is performed in synchronization with the horizontal movement operation of the mounting body 1, the seat belt 45 is always in the restraining action state regardless of the position of movement. It is good also as such a structure.

  When the description is added, as shown in FIG. 13, the seat frame support frame 46 is fixedly attached to the upper portion of the arm portion 6 and a fixed side portion 46a and a slide (not shown) with respect to the fixed side portion 46a. And a slide portion 46b that is slidably supported in the vehicle front-rear direction by an operation mechanism. The seat belt 45 is extended from a vehicle rear side portion of the slide portion 46b. The slide operation mechanism has a configuration similar to the configuration for horizontally moving the mounting body 1 and is configured to perform a horizontal moving operation in a state synchronized with the horizontal moving operation of the mounting body 1. In such a configuration, as shown in FIGS. 13A to 13C, the mounting body 1 is moved to any position of the lowered position X1, the outer position X2, and the inner position X3. However, the seat belt 45 can be properly attached to the restraining action state, and the lock restraining means for restraining the lock mechanism 61 from switching from the allowable state to the locked state is not necessary.

( 2 ) In the above embodiment, the hydraulic cylinder is provided as an actuator for raising and lowering the link mechanism, but it may be constituted by another actuator such as an electric motor.

( 3 ) In the above embodiment, a van type automobile is shown as an example of a vehicle, and an example in which a vehicle lifting device is mounted on the rear part of the van type automobile is shown. However, as a vehicle, a normal passenger car, bus, truck In addition, the mounting position of the vehicle lifting device is not limited to the rear part of the vehicle, but is attached to the front and rear intermediate parts of the vehicle, and the mounting table is placed outside the lateral side of the vehicle. You may comprise so that it may descend | fall.

Perspective view of vehicle lifting device Plan view of the vehicle lifting device Perspective view of a vehicle lifting device Perspective view of parallel quadruple link mechanism Exploded perspective view of mounting table Cross-sectional rear view of mounting table Cross-sectional rear view of mounting table Hydraulic circuit diagram Control block diagram Diagram showing the configuration of the belt holding device The figure which shows the structure of the lock check device Action diagram showing lifting operation and sliding operation of vehicle lifting device Action | operation figure which shows raising / lowering operation and slide operation of the raising / lowering device for vehicles of another embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Placement body 2 Lifting frame 3 Receiving support part 4 Link mechanism 6 Arm part 45 Seat belt 46 Seat belt support frame 54 Receiving tool 60 Belt support means 61 Feeding prevention means 62 Checking means 100 Switching means F Floor surface V Vehicle

Claims (4)

A lifting frame for supporting a mounting body for mounting and supporting a wheelchair;
A base frame provided on a vehicle and the lifting frame are connected to each other so that the above-described lifting frame is positioned on or near the ground and is placed at the same height or substantially the same height as the vehicle floor. The lifting frame can be lifted and lowered in a parallel posture or a substantially parallel posture over the rising state where the body is positioned , and the lifting frame is moved to the outside of the vehicle as the lifting frame is lowered to the lowered state. And a drive elevating link mechanism that moves the elevating frame to the vehicle inward side in accordance with the raising operation of the elevating frame to the raised state ,
When the lifting frame is in the raised state, the mounting body is movable up and down in a horizontal direction between an outer position located on the vehicle outer side and an inner position located on the vehicle inner side. Configured to be supported by a frame,
A seat belt is provided that can be mounted in a restraining action state that restrains the upper body of the user by extending downward from above the shoulder of the user seated on the wheelchair placed and supported by the mounting body. A lifting device for a vehicle,
A support frame for a seat belt for supporting the seat belt in a state of extending downward from a position above the height corresponding to the shoulder of a user sitting on a wheelchair placed and supported on the mounting body, Provided in the lifting frame ,
Belt support means for supporting the seat belt in a state that allows the seat belt to be extended is provided on the support frame for the seat belt,
The support frame for the seat belt is provided on the lifting frame so as to be positioned on the right side of the wheelchair placed and supported on the mounting body,
A vehicular lifting apparatus provided on the mounting body such that a holder for detachably holding the lower end portion of the seat belt is positioned on the left side of the wheelchair mounted and supported on the mounting body . The elevating frame receives and supports the mounting body in a horizontal direction so as to be relatively movable, and extends vertically from both lateral sides of the receiving support to the link mechanism. A pair of left and right arm parts to be connected,
The vehicle lifting / lowering device according to claim 1, wherein the seat belt support frame is provided at an upper portion of a right arm portion of the pair of left and right arm portions. The seat belt is placed in a position where the seat belt is in the restraining state when the lower end of the seat belt is attached to the support when the mounting body is in the inward position. The vehicle elevating device according to claim 1 , wherein the vehicle elevating device is provided in a fixed position on the elevating frame so as to be supported . A feeding preventing means that is switchable between a permissible state that allows the seat belt to be fed and a locked state that prevents the feeding, and that switches from the allowed state to the locked state by vibration;
Checking means switchable between a check state for checking that the feeding prevention means switches from the allowable state to the locked state and a check release state for allowing switching from the allowable state to the locked state;
A switching means for switching the restraining means to the restrained state when a horizontal movement operation of the placing body is performed in a state where the wheelchair is placed and supported on the placing body. The vehicle lifting apparatus according to claim 3.

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