JPH0667172U - Handrail device for lifts installed in vehicles - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a handrail device that has good workability when the handrail body is stored and that allows the user to get in and out of the wheelchair even when the handrail body is stored. [Structure] A handrail main body 71 in which the handrail device 70 is assembled at the upper part of each side frame 30 so as to be vertically rotatable at a base end, and a lock cam 72 integrally provided at the base of each handrail main body 71. And a cam follower 73 that engages with each lock cam 72 at one end and is rotatably assembled to each side frame 30 at the other end, and is urged toward the lock position by a spring 76 and operated by an operating lever 77. A lock lever that can be rotated to the unlocked position, holds each handrail main body 71 in a horizontal state in cooperation with each lock cam 72 at the lock position, and allows the rotation of each handrail main body 71 at the unlocked position.
74 and each handrail body 71 fixed to each side frame 30
The holder is configured to hold each of the side frames 30 in a stored state.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handrail device for a lift, which is installed in a vehicle for elevating a wheelchair, for example.

[0002]

[Prior art]

 A lift (elevating device) mounted on a vehicle is, for example, as disclosed in Japanese Utility Model Publication No. 59-39078, a pair of left and right parallelograms that are driven by a drive device provided in the opening of the vehicle. It is equipped with a link mechanism and a pair of left and right side frames that are raised and lowered by each of these parallelogram linkage mechanisms and support the platform at the lower end. Normally, each side frame provides safety when getting on and off a wheelchair. Handrails are installed to raise.

[0003]

[Problems to be solved by the device]

 Each of the above handrail devices has a handrail main body mounted on the upper part of each side frame so as to be rotatable in the left-right direction at the base end.The handrail main bodies extend in the front-rear direction and are parallel to each other. It is also used as a storage unit and is folded inside and stacked and fixed with a rubber band. With this method, there is a problem that it is not possible to get on and off in a wheelchair unless both handrail main bodies are spread to the left and right, and the work of fixing the two handrail main bodies with a rubber band is troublesome and unsightly. The present invention has been made to solve the above-mentioned problems, and its purpose is to improve workability when the handrail body is stored, and it is possible to get on and off the wheelchair even when the handrail body is stored. To provide a simple handrail device.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, in the present invention, the handrail device is attached to the upper part of each side frame so as to be vertically rotatable at the base end, and the base part of each of the handrail main units. Has a lock cam that is integrally provided with the lock cam and a cam follower that engages with each of the lock cams at one end, and is rotatably assembled to each of the side frames at the other end and urged toward the lock position by a spring. The handrail body can be rotated to the unlock position by the operation lever, and the handrail main body is held in the horizontal state in cooperation with the lock cams at the lock position to rotate the handrail body at the unlock position. A structure that includes an allowable lock lever and a holder that is fixed to each of the side frames and holds each of the handrail main bodies in a stored state along each of the side frames. It was.

[0005]

[Action]

 In the handrail device according to the present invention, when each of the stored handrail main bodies is removed from the holder and rotated upward, the lock lever automatically moves toward the lock position by the spring when slightly raised from the horizontal state. Turn to. Therefore, if the handrail main bodies are returned to the horizontal state after that, the cam followers of the lock levers cooperate with the lock cams to prevent the handrail main bodies from rotating downward from the horizontal state and maintain the horizontal state. Also, if the lock lever is rotated from the locked position to the unlocked position by operating the operation lever with the handrail body slightly lifted from the horizontal position, the lock lever locks the cam follower and the lock cam. As a result, each handrail main body can be rotated downward, and each handrail main body can be held by the holder in a stored state along each side frame.

By the way, when each handrail main body rotates below the horizontal state, even if the operation of the operating lever is released, the cam follower of the lock lever slidably engages with the lock cam to rotate each handrail main body. Tolerate. Therefore, the work up to holding each handrail body in the stored state in the horizontal state can be performed by slightly lifting each handrail body from the horizontal state and then returning it to the horizontal state. The work from the horizontal state to the retracted state of each handrail body after releasing the can be performed by simply rotating the handrail body only downward.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a state in which a platform 20 of a lift A mounted on a vehicle is at a descending end, and the lift A is provided at an opening of a vehicle B (for example, an opening at a rear portion of the vehicle opened and closed by a rear gate). A pair of left and right parallelogram linkages 10, a pair of left and right side frames 30 that vertically move the parallelogram linkages 10 to support the platform 20 in a horizontal state at the lower end, and the linkages 10. A driving device 40 for driving, a stopper device 50 provided at the rear end of the platform 20 for restricting rearward movement of a wheelchair (not shown) when moving up and down, and a stopper device provided at the front end of the platform 20 for moving the wheelchair up and down. It is composed of a stopper device 60 for restricting the forward movement of the vehicle and a handrail device 70 according to the present invention attached to each side frame 30. To have.

Each link mechanism 10 includes a bracket 11 fixed to a floor surface B1 of a vehicle body, an upper arm 12 and a lower arm mounted to the bracket 11 at the base end thereof so as to be vertically rotatable via pins. 13 and a stay arm 14 rotatably attached to the ends of both arms 12 and 13 via pins respectively. The stay arm 14 is formed integrally with the side frame 30. There is.

The platform 20 is rotatably assembled to both side frames 30 via the shaft 15 and is brought into a state (horizontal state) shown in FIG. 1 by a support plate (not shown) provided at a lower end of the side frames 30. It consists of a front platform 21 that is held and a rear platform 22 that is rotatably assembled to the platform 21 via brackets 23, 24 and pins 25 and is held in the state (horizontal state) of FIG. It can be folded and stored as shown by the phantom lines in FIG.

The drive device 40 is rotatably connected to the bracket 11 at its base end via a pin, and is also rotatably connected to a tip end portion of the upper arm 12 at its tip end via a pin. A hydraulic cylinder 41 that drives the mechanism 10, a hydraulic control circuit (not shown) that controls the supply and discharge of hydraulic oil to and from the hydraulic cylinders 41, and an electric hydraulic pump and an electromagnetic switching valve that are provided with this hydraulic control circuit. An electric control circuit (not shown) that controls the electric oil is supplied to both hydraulic cylinders 41 by driving the electric hydraulic pump while operating the up push button switch provided in the electric control circuit. When the hydraulic push-down switch provided in the electric control circuit is operated, the electromagnetic switching valve is excited so that both hydraulic cylinders 41 are extended. The hydraulic oil is discharged from the hydraulic cylinders 41 so that the hydraulic cylinders 41 contract, and the platform 20 is raised by the expansion operation of the hydraulic cylinders 41, and the platform 20 is lowered by the contraction operation of the hydraulic cylinders 41. Is becoming.

The rear stopper device 50 includes a stopper plate 52 rotatably mounted on the rear end of the rear platform 22 via a pin 51 in a vertically rotatable manner, and the stopper plate 52 in a solid line position in FIG. Alternatively, it is composed of a lock pin (not shown) that is fixed at a virtual line position, and the lock pin can be manually operated. The front stopper device 60 has a stopper plate 61 mounted on the front end of the front platform 21 so as to be rotatable in the upward and downward directions via the shaft 15, and the stopper plate 61 is located at a position other than the rising end of the platform 20. It is composed of a lock mechanism (not shown) that is fixed at the position shown by the solid line in FIG. 1 and becomes horizontal when the platform 20 is at the rising end. The lock mechanism is linked to the movement of the platform 20. Has become.

As shown in FIGS. 3 and 4, the handrail device 70 includes a handrail main body 71 which is attached to the upper portion of each side frame 30 at its base end so as to be vertically rotatable via a pin. The handrail main body 71 is provided with a lock cam 72 integrally provided at the base thereof, and a cam follower 73 engaging with the lock cam 72 is provided at an upper end and a lower end is provided on each side frame 30 via a pin. A lock lever 74 is rotatably assembled and housed in each side frame 30.

As shown in FIG. 3, each lock lever 74 cooperates with each lock cam 72 at the locking position shown by the solid line in the figure to fix and hold each handrail main body 71 in the horizontal state, and at the phantom line shown in the figure. At the unlocked position, the handrail main body 71 is allowed to rotate to the storage state shown by the phantom line. As shown in FIGS. 3 and 5, the upper portion is attached to each side frame 30. It is held by a fixed stopper / guide 75, and is urged toward the locked position by a spring 76 at the intermediate portion, as shown in FIGS. Further, an operation lever 77 for rotating the lock lever 74 to the unlock position is fixed to the lower end portion of each lock lever 74, and the handle portion of the operation lever 77 projects outside the side frame 30. .

As shown in FIGS. 2 and 7, a holder 78 made of spring steel is fixed to the inside of the lower portion of each side frame 30 so that each handrail main body 71 extends along each side frame 30. Further, when the handrail main body 71 is pivoted to the stored state (see phantom lines in FIGS. 2 and 3), a part of the pivotal end of each handrail main body 71 is elastically fitted and held in the holder 78. There is.

In the handrail device 70 of the present embodiment configured as described above, when each of the handrail main bodies 71 in the stored state is detached from the holder 78 and rotated upward, the handrail main body 71 is slightly raised from the horizontal state. The lock lever 74 is automatically rotated by the spring 76 toward the lock position. Therefore, if the handrail main bodies 71 are returned to the horizontal state after that, the cam followers 73 of the lock levers 74 cooperate with the lock cams 72 to prevent the handrail main bodies 71 from rotating downward from the horizontal state, and thus the horizontal state. Hold on.

Further, with each of the handrail main bodies 71 slightly raised from the horizontal state, the operating lever 77 is operated to move the lock lever 74 from the locked position shown by the solid line in FIG. 3 to the phantom line in FIG. When the handrail main body 71 is rotated toward the unlock position, the lock follower 73 of the lock lever 74 and the lock cam 72 can release the lock, and the handrail main bodies 71 can be rotated downward. It can be elastically held by the holder 78 in a storage state along with.

By the way, when each handrail main body 71 is rotated below the horizontal state, even if the operation lever 77 is released, the cam follower 73 of the lock lever 74 is slidably engaged with the lock cam 72. To allow the handrail main body 71 to rotate. Therefore, the work of holding the handrail main bodies 71 in the stored state in the horizontal state can be performed by slightly lifting the handrail main bodies 71 from the horizontal state and then returning them to the horizontal state. After unlocking, the handrail main bodies 71 can be moved from the horizontal state to the stored state by simply rotating the handrail main bodies 71 downward.

[0018]

[Effect of device]

 In summary, in the handrail device according to the present invention, the work until the handrail bodies in the stored state are held horizontally is performed by slightly lifting each handrail body from the horizontal state and then returning it to the horizontal state. In addition, after the lock is released, each handrail main body can be moved from the horizontal state to the stored state by simply rotating only the handrail main body downward, so each workability is improved. Good and easy to do. In addition, each handrail main body can be stored along each side frame, so not only does it look good, but it also allows the user to get on and off in a wheelchair with each handrail main body stored, which is very convenient. In addition, since the left and right handrail main bodies can be used independently, it is possible to use one handrail main body in a horizontal state and the other handrail main body in a retracted state. You can easily get on the side of the car without being disturbed by the handrail body.

[Brief description of drawings]

FIG. 1 is a side view of a lift having a handrail device according to the present invention with a platform at a lower end.

FIG. 2 is a side view of the lift with the platform shown in FIG. 1 at the rising end.

FIG. 3 is a vertical cross-sectional side view of an enlarged main part of the handrail device according to the present invention shown in FIG.

FIG. 4 is a rear view seen from the direction of arrow 4 in FIG.

5 is a cross-sectional view taken along line 5-5 of FIG.

6 is a cross-sectional view taken along line 6-6 of FIG.

FIG. 7 is a top view of a holder for fixing the handrail main body in a stored state.

[Explanation of symbols]

10 ... Link mechanism, 20 ... Platform, 30 ... Side frame, 40 ... Driving device, 50, 60 ... Stopper device, 70 ... Handrail device, 71 ... Handrail main body, 72 ... Lock cam, 73 ... Cam follower, 74 ... Lock lever, 7
5 ... Stopper / guide, 76 ... Spring, 77 ... Operating lever, 78 ... Holder.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroaki Inoue 25 Uedoike, Yoshiwara-cho, Toyota City, Aichi Prefecture, Arako Co., Ltd. (72) Inventor Hiroshi Orido 25, Uefujiike, Yoshihara-cho, Toyota City, Aichi Prefecture, Arako Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A pair of left and right parallelogram link mechanisms provided at an opening of a vehicle and driven by a drive device, and a pair of left and right parallel quadrilateral link mechanisms that are vertically moved to support the platform at their lower ends. A handrail device that is assembled to each of the side frames of a lift including the side frame, and a handrail main body that is vertically rotatably assembled to the upper portion of each of the side frames at the base end thereof, and each of these handrails. A lock cam integrally provided at the base of the main body and a cam follower engaging with each lock cam are provided at one end, and the other end is rotatably assembled to each of the side frames to be directed toward the lock position by a spring. It is biased and can be rotated to the unlock position by the operation lever, and at the lock position, the handrail main body is leveled in cooperation with the lock cams. And a lock lever that holds the handrail main body in the unlocked position and allows the handrail main body to rotate in the unlocked position, and holds the handrail main body fixed to the respective side frames in a stored state along the side frames. A handrail device for a lift equipped on a vehicle, which includes a holder.