JPH0347616Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to an elevating device in a stretcher loading device used for transporting a patient or other person by a transport vehicle such as an ambulance.

(Conventional technology) As a conventional stretcher, the
32935 "Stretcher support cradle for stretcher racks that can be raised and lowered via a pressure medium mechanism using a liquid pneumatic medium"
(Conventional Example 1), Utility Model Publication No. 48-36689 "Patient Transport Vehicle" (Conventional Example 2), Utility Model Publication No. 57-46978 "Patient Transport Vehicle" (Conventional Example 3), etc. are known.

By the way, generally speaking, casters of conventional stretchers are placed directly on a conveyance vehicle.

(Problem that the invention aims to solve) Therefore, the shock from the ground that the transport vehicle receives may be transmitted directly to the stretcher, and vibrations that are harmful to the patient may be transmitted.In particular, vibrations in the low frequency range are harmful to the patient. I had it. Therefore, it was necessary to raise the stretcher from the transport vehicle, but such a device did not exist in the past.

Furthermore, in Conventional Example 3, there is a description of a stopper for the upper frame body, but the stopper is made by engaging or disengaging the pin at the tip of the lever with a plurality of holes provided in the adjustment rod. There was a problem in that the pins could not be inserted reliably.

(Means for solving the problem) This invention consists of an upper frame having an opening, a lower frame having an opening and facing the opening of the upper frame, and an X-shaped pantograph.
The tips of the chevrons at the center of the top and bottom of the X-type pantograph are attached to the vertical movement mechanism, which is rotatably fixed to the center of the top and bottom frames, respectively, with the attachment part as the rotation axis, and to the top and bottom ends of the vertical movement mechanism, which are rotatably attached. a hollow cylindrical stopper guide that is fixed to a roller at one end of the lower frame, moves within the lower frame, and has a locking part inside that is biased by a spring with its tip end tilted toward the end; It penetrates the stopper guide and has a cylindrical shape as a whole, has a plurality of locking parts consisting of a plurality of notches at the top, and fixes the base to the end of the lower frame so as to be rotatable with the longitudinal direction as the center of rotation. A lifting device for a stretcher mounting device is provided, which is characterized by comprising a stopper.

(Function) By changing the position of the locking part on the stopper side that is hooked on the locking part on the stopper guide side, the height of the pantograph of the vertical movement mechanism is changed and the height of the upper frame is adjusted. To change the locking positions of the locking part on the stopper side and the locking part on the stopper side, rotate the shaft of the stopper as the rotation axis, and change the locking part on the stopper side, which is a notch, to the locking part on the stopper guide side. Move the stopper from the stopper, touch the part of the stopper where the stopper is not formed, lift the stopper guide side stopper, release the stopper, slide the stopper guide relative to the stopper, and insert a new stopper. When the locking part on the stopper guide side reaches the position of the locking part on the stopper side, the stopper is rotated again to lock the locking part on the stopper guide side and the locking part on the stopper side.

(Example) An example of this invention will be described below with reference to the drawings.

11 is a stretcher. Stretcher 1
1 is a frame 1 as shown schematically in front in FIG.
2 and 4 hanging downward from the four corners of the frame 12.
Consists of 13 book casts. An annular fixed device 14 is provided protruding from the lower surface of the frame 12. The fixed device 14 is located on the head side of the stretcher 11, that is, on the left side in FIG.
2 pieces spaced apart in the width direction, stretcher 11
One is provided approximately in the center on the foot side of the foot.

Reference numeral 21 shown in FIGS. 1, 2, etc. is a stretcher lifting device. Stretcher lifting device 21
The upper frame 2 is shown in the enlarged view in Figure 2.
2. It has a lower frame 23. Both the upper and lower frames are made of steel with a U-shaped cross section, and the upper frame 22 opens downward and the lower frame 23 opens upward, with the openings facing each other. 24 is a vertical movement mechanism of the stretcher elevating device 21. Vertical movement mechanism 2
4 is basically an X-type pantograph as shown in FIG. 2 and FIG. 3 showing a perspective view of the vertical movement mechanism 24. Tips 25 of the chevrons at the center of the upper and lower sides of the X-shaped pantograph of the vertical movement mechanism 24
are rotatably fixed to the center portions of the upper and lower frames 22 and 23, respectively, with the mounting portions as rotational axes. Rollers 26 are rotatably attached to both upper and lower ends of the vertical movement mechanism 24, respectively. Further, at one end of the lower frame, there are shown figures 3 and 4 showing a partial enlargement of figure 3, figure 4 a showing an enlargement of figure 4, and figure 4 showing a left cross section of figure 4. As shown in FIG. b, a hollow cylindrical stopper guide 28 is fixed to the roller 26 and moves within the lower frame 23, and has a claw 27 inside. As shown in FIG. 4b, the claw 27 is biased by a spring with its tip inclined toward the stopper guide 28 and toward the end. 29 is a stopper. The stopper 29 has a cylindrical shape as a whole, and has a fourth
As shown in the figure, a plurality of notches are provided in the upper part to form a plurality of claws 30, and the base is fixed to the end of the lower frame 23 so as to be rotatable about the stopper 29 axis. By changing the position of the pawl 30 on the stopper 29 side that is hooked on the pawl 27 on the stopper guide 28 side, the height of the pantograph of the vertical movement mechanism 24 is changed and the height of the upper frame 22 is adjusted. The mutual locking positions of the claws 27 and 30 can be changed as shown in Fig. 4b.
As shown in the figure, the stopper 29 is rotated about the axis of rotation, and the claw 30, which is a notch, is moved from the position of the claw 27 on the stopper guide 28 side, and is brought into contact with the part of the stopper 29 where the claw is not formed. Lift up to release the lock of the pawl 30, slide the stopper guide 28 against the stopper 29, and when the pawl 27 comes to the new pawl 30 position, rotate the stopper 29 again to engage the pawls 27 and 30 with each other. This is done by stopping it. Lower frame 22
The two stoppers 29 attached to the
9 rotations are synchronized.

On the upper surface of the upper frame 22, fixing devices 4 are installed at three locations as shown in FIG.
1 will be provided. The fixing device 41 is the stretcher 11
The fixing target device 14 is installed at a position corresponding to the installation position of the fixed device 14 provided therein. The fixing device 41 is shown in FIG. 5, FIG. 6 showing a schematic plan view of the operating principle of the fixing device 41, FIG. 6 a, FIG. 6 b, and one of FIG. 6 a to FIG. Figures 6c, 6d, and 6e showing enlarged views of the fixing device 41
As shown in FIG. 7, which is a side view showing a schematic side view of the operating principle, the foot has a hook 42 in the form of a plate that opens an opening 42a into which the annular fixed device 14 can be inserted toward the foot. The hook 42 rotates around the rotation axis 43 and opens into the opening 4 shown in FIG. 6a.
The opening 42a is rotated between a position where the opening 42a is oriented horizontally in the figure and a position where the opening 42a is oriented vertically upward as shown in FIG. 6b. The hook 42 is further biased by a spring so as to always direct the opening 42a in the direction of arrow D in FIG. The rotation shaft 43 of the hook 42 is shown in FIG.
As shown in FIG. 6b, it is provided at a position offset from the direction of entry of the opening 42a into which the fixed device 14 enters. 44 is a locking member, which is rotatable around a shaft 44a. The locking member 44 is always urged in the direction of arrow A in FIGS. 6a and 6b by a spring, and when the opening 42a takes a horizontal position, it is in the position shown in FIG. 6a. The hook 42 is made to take a free state, but when the hook 42 is in a position where the opening 42a is oriented in a slightly vertical direction, the locking point 45 of the hook 42 is moved as shown in FIGS. 6b and 6c. Install it in a position where it touches. 44b shown in FIG. 6d is a claw. The pawl 44b is provided to protrude toward the release rod 46 from the shaft 44a of the locking member 44 to the right side in the figure, that is, toward the foot. 44c is a rod attachment member, and one end thereof is attached to the shaft 44a so as to be rotatable about the shaft 44a as a rotation axis, separately from the locking member 44. Rod attachment member 44c
The other end is fixed to the release rod 46 so as to be rotatable about the attachment portion. 44d is the boss,
When the locking member 44 is rotated in the direction A, it is provided at a position where it can be contacted by the claw 44b and protrudes to the left in FIG. 6e. The other end of the release rod 46 is connected to and operated by a link mechanism that rotates the locking member 44 about a rotating shaft 101, as shown in FIG. The link mechanism 47 is further connected to a handle 48 for actuating the locking member 44. 49 is a protector for protecting the handle 48. handle 4
8, the spring 53 is always directed toward the head, that is, toward the left in the figure.
energized by.

Reference numeral 50 shown in FIGS. 6 and 7 is a first rotating member whose center of rotation is the Y-axis, and is installed below the position where the fixed device 14 of the foot-side stretcher 11 is expected to pass. The surface of the first rotating member 50 is slightly bulged to a medium height as shown in FIG. 7 so that it is easy to sense the contact caused by the passing of the fixed device 14 on the surface. The first rotating member 50 is always urged upward by a spring. The second rotating member 51 rotates about the X-axis, which is provided in a direction substantially perpendicular to the Y-axis and is located closer to the handle 48 than the Y-axis. Second rotating member 5
1 on the first rotating member 50 side is the first rotating member 5
0 and the other end is usually a handle 48
It rests on the base 52 of the handle shaft 48a attached to the handle shaft 48a. The end of the second rotating member 51 on the handle shaft 48a side is always urged downward by a spring.

Therefore, the handle shaft 48a of the second rotating member 51
When one end of the side is lifted onto the handle shaft 48a and the handle 48 is moved to the left in the figure due to the bias of the spring 53, when the handle 48 is pulled to the right in the figure, the second rotating member 51 is moved. Handle shaft 48
Since the tip on the side a is biased downward, it falls to the tip of the base 52 of the handle shaft 48a, restricting the movement of the handle 48 to the left in the figure, and maintaining and locking the handle 48 in that state. At the same time, the release rods 46, 46, 46 are moved toward the foot by the operation of the handle 48, and the rod attachment member 44c is rotated about the shaft 44a as shown in FIG. 6d. Then, the boss 44d is also moved to the foot side, and the claw 4
Touch 4b and keep pressing. Then, the locking member 4
The tip of 4 is separated from the hook 42 and the lock is released. Moreover, the contact between the tip of the second rotating member 51 and the tip of the handle shaft 48a locks it in that state. However, the biasing force of the hook 42 in the direction of arrow D is not strong enough to push the fixed device 14 and push out the stretcher 11, so the hook 42 does not rotate and maintains its state. Stretcher 11
When pulled out from the stretcher lifting device 21,
The hook 42 is rotated as the fixed device 14 moves.

Therefore, when the stretcher 11 is pulled out from the stretcher elevating device 21, the end of the second rotating member 51 on the handle 48 side is downward, and therefore the end facing the first rotating member 50 is upward. Therefore, the tip of the first rotating member 50 is lifted from below, and when the stretcher 11 is pulled out from the stretcher lifting device 21, the fixed device 14 of the stretcher 11 comes into contact with the first rotating member 50 and is pushed down. Then, the first rotating member contacts the second rotating member 51 and lowers the contact end. Then, the other end of the second rotating member 51, that is, the end closer to the handle shaft 48a is lifted. Then, since the handle shaft 48a is biased in the head direction, it is placed on the tip of the handle shaft 48a.

That is, when the stretcher 11 is pulled out from the stretcher lifting device 21, the hook 42
The opening 42a is directed toward the foot, and the second rotating member 51 is placed on the base 52 of the handle 48, as shown in FIG. Further, the hook 42 and the locking member 44 are in a free state.

Therefore, next time when a new stretcher 11 is carried into the stretcher lifting device 21, the end of the second rotating member 51 opposite to the handle 48 is lowered, and the first rotating member 50 is attached to the fixed device 14 of the stretcher 11. Even if they make contact, the other end is the second rotating member 5
No contact with 1. If the handle 48 is operated while the stretcher 11 is not in the stretcher lifting device 21, the tip of the second rotating member 51 on the handle shaft 48a side will fall to the tip of the base 52 of the handle 48, Movement of the handle 48 to the left in the figure is restricted. At the same time, the handle 48
As a result of this action, the release rods 46, 46, 46 move toward the foot, causing the rod attachment member 44c to rotate about the shaft 44a as shown in FIG. 6d. Then, the boss 44d is also moved to the foot side,
By contacting the claw 44b and continuing to press it, the tip of the locking member 44 separates from the hook 42 and the lock is released. Then, even if the fixed device 14 enters and is rotated, the hook 42 will not be locked with the locking member 44. However, in that state, stretcher 11
enters the stretcher lifting device 21, the second
The end of the rotating member 51 on the handle 48 side is downward, and therefore the end facing the first rotating member 50 is upward. Therefore, the first rotating member 50 is lifted from below, and when the stretcher 11 enters the stretcher lifting device 21, the stretcher 11
The fixed device 14 contacts the first rotating member 50 . Then, the other end of the first rotating member 50 comes into contact with the second rotating member 51, lowering the contact end. Then, the other end of the second rotating member 51 is lifted, and since the handle shaft 48a is biased in the head direction, it is placed on the tip of the handle shaft 48a, and as a result, the handle shaft 48a is placed on the tip of the handle shaft 48a.
The state is the same as when 8 is not activated.

Subsequently, when the stretcher 11 enters the stretcher lifting device 21, the hook 42 with the opening 42a facing the foot as shown in FIG. It is pushed and rotated around the rotating shaft 43, taking the state shown in FIG. 6b. Then, the hook 42 moves the locking member 44 using the shaft 44a as the rotation axis against the bias of the spring, and as shown in FIG.
and the locking portion 44a of the locking member 44 are locked.
Therefore, the movement of the hook 42 is restricted by the locking member 44.

54 shown in FIG.
These are guides for guiding the fixed device 14 to the fixing device 41, the hook 42 of the fixing device 41, and the opening 43 when carrying it into the stretcher lifting device 21 of No. 1, and two guides are arranged substantially parallel to each other on the head side. On the foot side, install one set on the left and right approximately in the center.

61 is a buffer device. The shock absorber 61 is shown in FIG. 8 showing its perspective view and in FIG. 9 showing its front view.
As shown in the figure, the torsion bars 63, 63 are made up of links 62, 62 whose one end is rotatably attached to the lower frame 23 or the upper frame 22, and torsion bars 63, 63 which are attached to the other end of the links 62, 62. are rotatably attached to the upper frame 22 and lower frame 23, respectively. 64 is an eccentric cam for adjusting the strength of the urging force of the torsion bar 63. Eccentric cam 64
is in contact with the torsion bar 63 as shown in FIG. 8a, and twists the torsion bar 63 by rotating the eccentric cam 64 in the direction of the arrow. 6
5 is a control handle for operating the eccentric cam. A shock absorber 66 is attached between the upper frame 22 and the lower frame 23. Two shock absorbers 61 are used by arranging them vertically.

Reference numeral 71 shown in FIGS. 1, 10, 11, and 12 is a width direction moving device. Reference numeral 72 denotes a base of the mobile device, which is fixed in the interior of the ambulance vehicle. Reference numeral 73 denotes a guide rail, which is fixed in the width direction inside the passenger compartment of the emergency vehicle. Guide rail 7
3 has a pentagonal cross section with an open top, and as shown in FIG. 12, which is a perspective view of the parts, locking holes A ₁ , A ₁ and C ₁ , C ₂ , C ₃ , C are provided on both lower sides, respectively. ₄ will be provided. Reference numeral 74 denotes a frame fixed base, which hooks a claw 76 so as to wrap around the guide rail 73, and is movable while being guided by the guide rail 73. Reference numerals 75 and 75 indicate handles, the tips of which are bent and attached to the frame fixing base 74. 77 is a connecting rod and handles 75, 7
Connect 5 and synchronize their movements. The stretcher lifting device 21 and the buffer device 61 are placed on the frame fixing base 74.

(Effect of the invention) Therefore, in this invention, the stretcher is raised from the floor of the transport vehicle.

[Brief explanation of the drawing]

Fig. 1 is a front view of a stretcher installed in a stretcher lifting device according to an embodiment of this invention, Fig. 2 is a partially enlarged view of the stretcher lifting device, and Fig. 3 is a vertical movement mechanism of the stretcher lifting device. Fig. 4 is a partially enlarged view of the vertical movement mechanism.
Figure 4a is a partially enlarged view of Figure 4, Figure 4b is a partial enlarged view of Figure 4.
5 is a plan view of the upper frame of the stretcher lifting device; FIG. 6 is a schematic plan view of the operating principle of the fixing device fixed to the upper frame;
Figures a and 6b are the operating state diagrams, and Figure 6c is the sixth
FIG. 6 d is a partially enlarged front view of the fixing device; FIG. 6 e is a partially enlarged left side view of the fixing device;
Fig. 7 is a schematic front view of the operating principle of the fixing device, Fig. 8 is a perspective view of the shock absorbing device, Fig. 8a is an enlarged view of the same part,
9 is a front view of the same, FIG. 10 is a perspective view of the widthwise moving device, FIG. 11 is a sectional view of the center, and FIG. 12 is a plan view of the guide rail. 22...Top frame, 23...Bottom frame, 2
4... Vertical movement mechanism, 25... Chevron tip, 26...
...roller, 27, 30...locking portion, 28...stopper guide, 29...stopper.

Claims (1)

[Scope of utility model registration request] It consists of an upper frame having an opening, a lower frame having an opening and facing the opening of the upper frame, and an X-shaped pantograph. A vertical movement mechanism that is rotatably fixed to the center of the frame with the mounting part as the rotation axis,
A roller is rotatably attached to both the upper and lower ends of the vertical movement mechanism, and a roller is fixed to one end of the lower frame and moves within the lower frame. It consists of a hollow cylindrical stopper guide provided with a stopper, and a cylindrical shape as a whole that passes through the stopper guide.
Stretcher mounting characterized by having a plurality of locking parts consisting of a plurality of notches in the upper part, and a stopper which fixes the base part to the end part of the lower frame so as to be rotatable about the longitudinal direction. Lifting device for equipment.