JPH0612750Y2 - stretcher - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to, for example, a stretcher used for transporting a patient in a lying state, and particularly, a stretcher that facilitates handling of casters. Regarding

(Prior Art) A conventional stretcher has a structure as shown in FIG. That is, the mattress 103 is placed on the frame 101. Further, four pedestals 105 are attached to the four corners of the frame 101.
Casters 107 are attached to the lower ends of the pillars 105 of the book.

(Problems to be Solved by the Invention) According to the above conventional configuration, there are the following problems.

First, when it is desired to lock the four casters 107, it is necessary to operate the casters 107 separately, which is complicated.

In particular, when an emergency is required, such as when performing a heart massage, it is necessary to lock immediately, which is a problem.

Further, when the stretcher is loaded on the vehicle, it is difficult to lock the caster 107 located on the window side of the vehicle, and the operability may be impaired depending on the location.

The present invention has been made on the basis of such a point, and an object of the present invention is to provide a stretcher capable of facilitating the handling of casters and promptly responding to an emergency.

(Means for Solving the Problems) In order to achieve the above object, a stretcher according to the present invention has a frame for supporting a mattress on an upper surface side, four pedestals attached to four corners of the frame, and each of the above. A caster that is attached to the lower end of the pedestal and that can change the direction of the wheel and that is vertically movably held by a damper mechanism, and the front two and the rear two of the above four pedestals, respectively. As a set, an operating mechanism extending between a pair of pedestals of each set and provided with an operating pedal, a shaft provided on the pedestal and vertically moved by operating the operating mechanism, and a caster provided on the caster. A shaft is selectively inserted, and a recess for selectively restricting the direction change and vertical movement of the wheel depending on the insertion position and a lock mechanism for locking an arbitrary operation position of the operation mechanism are provided. It is characterized by that.

(Operation) When it is desired to lock the caster wheels by restricting the direction change and vertical movement of the wheels, first unlock the operating mechanism by the lock mechanism and then depress the operating mechanism to an appropriate position. Manipulate.

By operating the operation mechanism to an appropriate position, the shaft moves to a predetermined position and is inserted to a predetermined position in the recess. In this state, the lock mechanism is operated to lock the operation position of the operation mechanism.

As a result, the wheels of the caster are fully or partially locked, and either one of the direction change and the vertical movement, or both are restricted.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a perspective view showing the overall structure of the stretcher according to this embodiment, and a mattress (not shown) is placed on the frame 1. Four pillars 3 are attached to the four corners of the frame 1, and casters 5 are attached to the lower ends of the four pillars 3, respectively.

Next, the configuration of the pedestal 3 and the caster 5 will be described in detail by taking the front side thereof as an example. As shown in FIGS. 2 and 3, at the lower end of the pedestal 3, a support member 9 is provided via a rotating body 7.
Is installed. A pair of side walls 1 of the support member 9
A rocking member 13 is mounted between 1 and 11 so as to be rockable around a rocking shaft 15.

A wheel 19 is mounted between the pair of side walls 17, 17 of the swing member 13 so as to be rotatable about a rotation shaft 21.

A damper mechanism 23 is installed between the support member 9 and the swinging member 13. The damper mechanism 23 has a structure in which a coil spring 27 is housed in an outer cylinder 25.

Therefore, the wheel 19 can change its direction by the rotation of the support member 9 and can move up and down by the swinging of the swinging member 13 without being damped by the damper mechanism 23.

As shown in FIG. 2, an operating mechanism 29 is stretched between a pair of pedestals 3 and 3 at the front and rear of the stretcher.

Although FIG. 2 shows only one pedestal 3 side, the other pedestal 3 has the same structure.

First, a shaft 31 is arranged between the pedestals 3 and 3, and an end portion of the shaft 31 penetrates the pedestal 3. The pin 33 is connected in a state where its rotation is restricted.

A cylindrical body 35 is capped on the outer circumference of the shaft 31, and another cylindrical body 37 arranged in parallel with the cylindrical body 35 is connected via a connecting member 39 arranged inside the pedestal 3. Are linked together. The end of the cylindrical body 37 extends to the outside of the pedestal 3, and one end of another connecting member 41 is connected.
A short pipe 43 is fixed to the other end of the connecting member, and the short pipe 43 is capped on the end of the shaft 31. An operation pedal 45 is attached at an axially intermediate position between the cylindrical bodies 35 and 37.

Therefore, by appropriately depressing and raising the operation pedal 45, the one in which the tubular body 35 and the tubular body 37 are integrated rotates about the shaft 31.

Further, the operation mechanism 29 is locked at its operation position by the lock mechanism 46. The configuration of the lock mechanism 46 will be described below.

First, at the end of the shaft 31 and inside the pedestal 3,
As shown in the figure, a ring 47 is fixed, and holes 49, 51, 53 are formed in the ring 47 in three positions in the radial direction.

On the other hand, a support member 55 is fixed to the cylinder body 35 side, and a lock pin 57 is slidably arranged on the support member 55. The lock pin 57 is constantly urged in the direction of the ring 47 by a coil spring 59, and a wire 61 is connected to the base end of the lock pin 57. The wire 61 is connected to an operation lever 63 as shown in FIG.

The lock pin 57 is inserted into one of the holes 49 to 53 of the ring 47, thereby fixing the tubular body 35 and thus the operating mechanism 29 at an arbitrary position.

The locked state is released by grasping the operation lever 63, pulling the wire 61, and pulling up the lock pin 57 against the biasing force of the coil spring 59.

Inside the pedestal 3, a shaft 64 having a quadrangular cross-section at the tip is arranged so as to be vertically movable, and the shaft 64 is connected to connecting members 66 and 68 via a pin 65. It is connected to the connecting members 39 and 41 via 66 and 68. Therefore, by rotating the operation pedal 45, the shaft 64 moves up and down. At that time, the pin 65 moves up and down along the elongated hole 70 of the shaft 3.

On the other hand, a recess 67 is provided at the upper end on the swing member 13 side, and the shaft 64 is selectively inserted into the recess 67.

Then, by depressing the operation pedal 45, the lock pin 57
Is inserted into the hole 49 of the ring 47 and the shaft 64 is recessed 67.
When the support member 9 is inserted until it comes into contact with the inner bottom surface, the rotation of the support member 9 and the swing of the swing member 13 are regulated.

On the other hand, when the lock pin 57 is inserted into the hole 51 of the ring 47 and the shaft 64 is inserted in a state of being separated from the inner bottom surface of the recess 67, the rotation of the support member 9 is restricted.

Further, when the lock pin 57 is inserted into the hole 53 of the ring 47 and the shaft 64 comes off the recess 67, the support member 9
And the swinging of the swinging member 13 is allowed.

As described above, the pedestal 3 on the opposite side (not shown) and its vicinity have the same structure, and the operating mechanism 29 and the lock mechanism 46 are shared.

Furthermore, the rear side of the stretcher has the same structure.

The operation will be described based on the above configuration.

First, it is assumed that the lock pin 57 is initially inserted into the hole 53 of the ring 47 and the shaft 64 is disengaged from the recess 67. In this case, the rotation and swing member 13 of the support member 9
Is allowed to swing, so that the wheel 19 can move freely.

Next, when it is desired to restrict the rotation of the support member 9 and thus the direction change of the wheel 19, first, by grasping the operation lever 63, the lock pin 57 is pulled out from the hole 53 of the ring 47 via the wire 61.

Next, the operation pedal 45 is depressed to lower the shaft 64 by a predetermined amount and insert it into the recess 67. In that state, the operating lever 63
When is released, the lock pin 57 is inserted into the hole 51 of the ring 47 and locked.

At this time, since the shaft 64 is inserted into the recess 67,
The rotation of the support member 9 and thus the direction change of the wheels 19 are restricted. Further, since the shaft 64 is separated from the inner bottom surface of the recess 67, the vertical movement of the swing member 13 and thus the wheel 19 is allowed.

Next, a case will be described in which it is desired to completely lock the wheel 19 by restricting both the direction change and the vertical movement of the wheel 19. In this case, the operating lever 63 is gripped and the lock pin 57 is pulled out from the hole 51 through the wire 61.

Then, the operation pedal 45 is depressed to move the shaft 64 into the recess 6
Insert further into 7. As a result, the shaft 64 has the recess 6
7 is in contact with the inner bottom surface. In this state, if the operation lever 63 is opened, the lock pin 57 is inserted into the hole 49 of the ring 47 and locked.

In this state, the shaft 64 is inserted into the recess 67 in a state of abutting the inner bottom surface thereof, so that the rotation of the support member 9 and the change of the direction of the wheel 19 are restricted, and the swing member 13 swings. The vertical movement of the wheel 19 is restricted, and the wheel 19 is completely locked.

In order to return to the original state, that is, the free state, the operating lever 63 is grasped, the lock pin 57 is pulled out from the hole 49 of the ring 47 through the wire 61, and the operating pedal 45 is raised in that state. The operation lever 63 may be opened.

According to this embodiment, the following effects can be obtained.

First, handling of the casters 5 has become extremely easy. Instead of individually operating each of the four casters as in the conventional case, two casters 5 can be handled at once by operating the operation lever 63 and the operation pedal 45 at the front and rear portions. Because you can.

Therefore, in an emergency, for example, in the case where it is desired to give a heart massage, it is possible to respond promptly, which is effective in enhancing the therapeutic effect.

Also, as when loading a stretcher on the vehicle,
Even if the casters are difficult to operate depending on the location,
In the case of the present embodiment, there is no problem because the casters are not directly operated.

(Effect of the Invention) As described in detail above, according to the stretcher of the present invention, it is possible to handle two casters at the front part and the rear part at a time by a simple operation, so that even in an emergency, it can be quickly performed. Can respond.

[Brief description of drawings]

1 to 6 are views showing an embodiment of the present invention. FIG. 1 is a perspective view showing the entire structure of a stretcher, FIG. 2 is a front view showing the structure of pedestals and casters, and FIG. The figure is the second
III-III arrow view of the figure, FIG. 4 is a IV-IV sectional view of FIG.
FIG. 5 is a sectional view taken along line V-V in FIG. 2, and FIG. 6 is VI- in FIG.
VI sectional view and FIG. 7 are perspective views showing the entire structure of a conventional stretcher. 1 ... Frame, 3 ... Pillars, 5 ... Casters, 19 ...
… Wheels, 29 …… Operating mechanism, 45 …… Operating pedal, 46
...... Lock mechanism, 64 ...... Axis, 67 ...... Concave part.

Claims (1)

[Scope of utility model registration request] 1. A frame for supporting a mattress on the upper surface side, and four pedestals attached to the four corners of the frame,
Casters attached to the lower ends of the respective pedestals, capable of changing the direction of the wheels, and held vertically movable via a damper mechanism; and two front and two rear portions of the four pedestals. Each of the sets is a set, and an operating mechanism that is provided between the pair of pedestals and is provided with an operation pedal, a shaft that is provided on the pedestal and that moves up and down by operating the operating mechanism, and the casters. A recess provided for selectively inserting the shaft and selectively restricting the turning and vertical movement of the wheel depending on the insertion position; and a lock mechanism for locking an arbitrary operation position of the operation mechanism. A stretcher that is characterized by what it has done.