JPS5828579Y2 - Wheelchair fixation device in a dental unit for the disabled - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wheelchair fixing device in a dental unit for the disabled.

In the dental treatment unit for the disabled, the wheelchair in which the disabled person is seated is placed on a chair pedestal that can be raised and lowered, so it is important to securely fix the wheelchair on the pedestal.

In view of this, the present invention fixes one manual wheel of the wheelchair on the pedestal with a hook from the side, and also places a horizontal rod behind the wheelchair to restrain both axles of the chair. Another hook is attached to the tip and configured to restrain the other manual wheel.Moreover, in order to adapt to the size of the wheelchair, the side hooks are installed in pairs at the front and rear, so that it can be adapted to the size of the manual wheel. As well as
The horizontal rod that restrains the back of the chair has a joint in the middle,
In addition, by attaching the hook at the end of the horizontal rod in an adjustable manner, it is possible to accommodate chairs of different widths.

The specific configuration will be explained below with reference to the drawings.

FIG. 1 shows a unit for treating disabled people, 1 is the unit main body, which includes a chair lifting device, 2 is a chair support arm that can be raised and lowered by the unit, 3 is a chair support supported by the unit, 4 is a wheelchair placed on it, 5 is its wheels, 6 and 7 are left and right manual wheels, 8 is a support for the safety platform erected on the arm, 9 is a side hook mechanism of the device on the arm, 10 is a crossbar behind chair 4 to restrain it,
11 indicates the hooks at the tips of the horizontal rods.

FIG. 2 shows details of the side hook mechanism 9.

12 in the figure is a wheelchair 4 when the mechanism is placed on the chair receiving arm 2.
The board is for being placed close to the side of the wheelchair, and has hooks 13 and 14 on both the front and rear parts thereof that project toward the wheelchair.

The front hook 13 consists of two symmetrical hook pieces 13' and 13'', which are pivoted on the base plate at 15 and 16, respectively, and are connected to each other by links 17.

The rear hook 14 similarly consists of a pair of hook pieces 14' and 14'' pivoted at 18 and 19, and the link 2
Connected with 0.

Reference numeral 21 is an operating rod connecting the links 17 and 20 of both hooks 13 and 14, 22 is an indicator light at the rear end of the board, and 23 is a switch for the indicator light, which is engaged with the operating rod 21.

In order to move the board 12 from side to side on the chair support arm 2,
A female screw 24 is horizontally installed in the center of the board, and a male screw 2 is installed horizontally in the center of the board.
5 is screwed on.

This male screw 25 extends through a side plate 26 fixed to the chair support arm 2 on the left side of the base plate 12, and is provided with a pinion 27 at the end.

28 is another side plate parallel to the side plate 26, and a gear train 29 that meshes with the pinion 27 is held between them;
An actuating lever 30 is fixed to the terminal gear ring.

FIG. 3 shows in detail the crossbar 10 that restrains the wheelchair from behind.

This horizontal rod consists of left and right side rods 31 and 32, and has a joint 33 between them. The straight rod 32 is pivoted, and the left end of the straight rod 32 crosses the connecting point 34 to the slope 32.
', and a support piece 37 for holding the hook 11 is rotatably supported at its right end 36.

The joint portion 33 is received by a movable ring 39 screwed onto a thread 38 carved on the left row 31, a sliding ring 40 abutting thereon, and a sleeve 41 and ring 40 fitted thereon, Mantle 41
It consists of a ridge 42 that is housed within the duct so that the biliary tract becomes the biliary duct.

A threaded rod 43 with a knob is screwed onto the support piece 37 on which the straight rod 32 is pivoted at its right end 36, and the base of the hook 11 is rotatably held at the tip thereof.

In the figure, reference numeral 44 denotes a retractable piece provided on the headrest post 8 for retaining the horizontal rod 10 at the position indicated by the broken line in FIG. 1.

Prior to placing the wheelchair 4 on the pedestal 3, the horizontal bars 10 are
It is rotated to the position indicated by the broken line in FIG. 1, and the protruding element 44 is pushed out and retained at that position.

The operating rod 21 of the side hook mechanism 9 is attached to the wheelchair on the cradle.
The hook pieces 13', 13'', 14' are separated from each other in the front and rear by operating the front and rear hooks 13 and 14 to move each pair of hook pieces to the positions shown by the chain lines in FIG.
, 14", to catch the front and rear edges of the right manual wheel 6 of the wheelchair. Next, by turning the operating lever 30 that is aligned with the operating rod 21 upward, the gear train 29 will be activated. The male screw 25 rotates, and the female screw 24 engaged with the screw causes the base plate 12 supporting the hooks 13, 14 to move laterally to the right on the arm 2, thereby causing the right manual wheel 6 to move laterally on the arm 2. The ring edge restraint of each hook piece that captures the is strengthened.

Thus, it is established that the wheelchair can be held from its side,
This is confirmed by the lighting of the indicator light 22.

In order to release the restraint of the chair, the manual wheel clamping by the hook piece is loosened using the actuating rod 21, and the board 12 is laterally moved to the left by pressing down the actuating lever 30 to return it to the original position.

To restrain a wheelchair from behind, push the protruding element 44 of the support column 8 into the horizontal rod 10, which is reserved at the chain line position in Figure 1, and then lower the horizontal rod to the position shown by the solid line. If the hook 11 is hooked on the edge of the left manual wheel 7 and the movable ring 39 of the joint 33 is adjusted to move it to the left, the sliding ring 40 in contact with it will also move to the left, and the spring 42 will move to the left. By pushing the cannula 41 to the left through the left end and embedding the joint point 34 in the left end thereof, the left and right side rods 31, which constitute the horizontal rod 10,
32 in a straight line, the horizontal rod 10 thus presses against both the left and right wheels 5, 5 of the chair from behind as a straight rod, and by further adjusting the rotation of the screw rod 43 at the left end of the horizontal rod,
The manual wheel 7 of the chair is firmly restrained by the hook piece 11 at the tip.

The front and rear hooks 13 and 14, which restrain the wheelchair from the sides, each have a pair of hook pieces 13', 13'' and 14', 14.
Therefore, if the manual wheel 6 is restrained between the outer sides 13' and 14', between the outer side 13' and the inner side 14', and between the inner side 13'' and 14', the It can be applied to either medium or small chairs.

Also, the horizontal rod 10 is made up of left and right side rods 31 and 32 that are connected at 34, and has a joint 33, so if the total length of the horizontal rod 10 is larger than the width of the wheelchair, Therefore, for a small wheelchair, as shown in the opening in Figure 3, the straight rod 32 for the left row 31 is bent around the joint point 34, and the movable ring 39 is adjusted so that the left end of the cannula 41 is bent. If the slope 32' of the straight rod 32 is brought into engagement and pressure contact, the angle of inclination of the straight rod 32 with respect to the leftward row 31 is maintained as it is, and the hook piece 11 at the free end can be hooked and restrained by the manual wheel 7. can.

As described above, the device of the present invention is capable of accurately grasping one hand wheel using a plurality of front and rear hook pieces attached to the wheelchair on the pedestal from the side, restraining it with a horizontal rod attached from behind, and furthermore, controlling the tip of the rod. By restraining the other manual wheel with the hook, it is possible to securely hold the wheelchair with a disabled person on it, and it is extremely convenient because it can be equally applied to chairs of different sizes.

[Brief explanation of drawings]

FIG. 1 is a rear view of the dental unit for the handicapped, and FIG. 2 is a plan view of the hook mechanism for securing the wheelchair for the handicapped from the side, with the cover omitted to show the internal mechanism arrangement. Figure 3 A 5 is a partly cutaway plan view of the horizontal beam used to restrain the wheelchair from behind. are shown respectively. In the figure, 5, 5...Wheel, 6, 7...Manual wheel, 9...Curved hook mechanism, 10...Horizontal rod, 1
1... Hook piece, 13.14... Curved piece.

Claims (1)

[Scope of utility model registration request] In order to hold a wheelchair for a disabled person placed on a chair holder supported by a chair holder arm which is moved up and down outside the main body by a lifting device inside the dental unit main body, a wheelchair is provided on the arm in order to hold the wheelchair from the side thereof. It has a mechanism in which a pair of hook pieces are placed close to one manual wheel of the chair and are spaced apart from each other in the front and back to respectively restrain the front and rear wheel edges of the chair, and one end for restraining the wheelchair from behind. A dental unit for the disabled, comprising a pivoted transverse rod, the free end of which supports in an adjustable manner another hook piece which engages the other manual wheel of said chair and restrains its wheel edge. wheelchair fixation device.