JPH05176955A - Stretcher - Google Patents

Abstract

PURPOSE:To prevent vibration, a shock, vertical G, etc., generated at the time of ruggedness of a road surface or a road, or a start, a stop and a curve from being transmitted to a sick person, etc., at the time of running and carrying of the stretcher. CONSTITUTION:By attaching a bed part 4 onto a cart part through dampers 17, 17a, 18 and 18a (buffer devices), or inclining and arranging such dampers 17, 17a, 18 and 18a, vibration, gravity, etc., are absorbed directly by the dampers 17, 17a, 18 and 18a, or the bed part 4 is displaced by displacement of the dampers 17, 17a, 18 and 18a and gravity (vertical G, horizontal G) is absorbed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention reduces the impact during running in stretchers for emergency, sick, injured, patient transport and elderly transport (particularly related to nursing homes, which have been rapidly increasing in recent years). It is related to the stretcher.

[0002]

2. Description of the Related Art Conventionally, such stretchers have been used in which a bed is fixed on a trolley with casters, and a sick person or the like is laid on the bed to run or slide on the ground in a hospital. Since it is placed on an ambulance or a carrier and transferred, shocks and the like from road surface irregularities during traveling propagate straight to the sick person, and shocks and vibrations (including vertical G and horizontal G described below) are given to the sick person and the like. Had a flaw to convey.

In addition, an ambulance or the like has a drawback in that an impact due to uneven roads is transmitted to the sick person as vibration when the ambulance travels, or the ambulance is directed to the sick person when the ambulance starts, stops, or curves. Alternatively, it has the drawback that gravity and inertial force (G) act in the lateral direction to adversely affect the sick person. Furthermore, the stretcher for such an ambulance should be fixed, and the length of the ambulance and stretcher (wheelbase ) And the like are constant, it is difficult to deal with the above-mentioned drawbacks.

[0004]

SUMMARY OF THE INVENTION The present invention is directed to vibrations, shocks, and vertical G when a stretcher is running or being transported.
The purpose of the present invention is to provide a stretcher designed to prevent the adverse effects of transmitting such information to sick people.

[0005]

SUMMARY OF THE INVENTION The present invention is based on the above-mentioned prior art and is based on the above-mentioned prior art. When the vehicle is running in a hospital or is transported by an ambulance, etc. In view of the problem of feeling vertical G, horizontal G, etc., the damper directly absorbs vibrations, gravity, etc. by mounting the bed part on the trolley part via a damper (damping device) or arranging the damper at an angle. Alternatively, the bed portion is displaced by the displacement of the damper to absorb gravity (longitudinal G, lateral G) to solve the above problem.

[0006]

According to the present invention, the shock absorber (damper) absorbs vibrations, shocks, vertical G, horizontal G, etc. during traveling and transportation of the stretcher so that the sick person does not feel these vibrations and the like. A similar absorbing action is performed on G and the like by the expansion and contraction of the shock absorber and the displacement of the bed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a stretcher having a vibration absorbing function for transporting a sick person according to the present invention.
Installs a bed portion 4 for a sick person or the like on a trolley portion 3 having four casters 2, 2a ...

First, the traveling trolley portion 3 of the stretcher 1 will be described. Reference numerals 6 and 6a denote a pair of front and rear gate-shaped vertical frames, and the front and rear portions of the vertical frames 6 and 6a (constant wheel base). The pair of upper connecting frames 8 and 8a are fixed to the upper frames 7 and 7a of the vertical frames 6 and 6a in the front-rear direction, and the four vertical casters 2 are attached to the lower ends of the vertical frames 9 and 9a ... It is equipped with 2a (with a fixing mechanism (not shown)).

Further, the horizontal frames 10 and 10a are fixed in the left-right direction between the vertical frames 9 and 9a of the front and rear vertical frames 6 and 6a, respectively, and the pair of lower connecting frames 11 is provided between the front and rear horizontal frames 10 and 10a. , 11a are fixed in the front-rear direction, and the main frame 12 is fixed in the front position and the left-right direction of the lower connecting frames 11, 11a.

Next, the bed 4 for placing the sick person or the like in the stretcher 1 will be described. 13 is a rectangular bed frame, and the front and rear positional relationship of the bed frame 13 with respect to the carriage 3 is the front position of each. Are substantially the same, and the rear of the bed frame 13 largely protrudes from the trolley part 3, and a tiltable backrest part 14 is pivotally attached to the front of the bed frame 13.

Reference numerals 15 and 15a denote a portion 1 below the bed frame 13.
6, 16a are a pair of sub-frames that are laterally laid across each other, and the sub-frames 15 and 15a are located in front of the main frame 12 and the horizontal frame 10a of the carriage 3. ..

Next, the shock absorbers 5 and 5a for supporting the bed 4 with respect to the carriage 3 will be described.
5a is a set of 2 dampers and 2 sets of 4 dampers 17, 17a, 18, 18a
The dampers 17, 17a, 18 and 18a are both inclined in the vertical direction and have different inclination directions. One damper 17, 17a is paired in the front-rear direction and the other damper is formed. 18 and 18a are left and right (width)
The three pairs of dampers 17, 18 and 18a are arranged in the front part of the stretcher 1 and the one damper 17a is arranged in the rear part of the stretcher 1 so that the weight of the sick person (human weight Balance).

The front dampers 17 are pivotally mounted between the main frame 12 of the carriage 3 and the slave frames 15 of the bed 4, respectively, and the rear dampers 17a are connected to the rear horizontal frame 10a of the carriage 3. Bed frame 4 subordinate frame 15a
And the dampers 18 and 18 on both the left and right sides.
A is pivotally connected between the front horizontal frame 10 of the carriage 3 and the front slave frame 15 of the bed 4, respectively.

The above-mentioned dampers 17, 17a, 18, 18a
Is composed of a cylinder portion 19 and a rod portion 20 that appears and disappears, and the gas, liquid, springs, etc. enclosed in the cylinder portion 19 contract these to correspond to the appearance and disappearance of the rod portion 20.

Next, the backrest portion 14 equipped on the bed portion 4
Explaining, etc., the base end of the gate-shaped back frame 21 is pivotally attached to the front part of the bed frame 13 to be swingable,
A cylinder 24 is pivotally attached between a tip frame 22 of the back frame 21 and a pivot frame 23 that is laid across the front of the bed 4.
A handle 26 is provided on the tilted frame 25 of the back frame 21, and a wire 27 consisting of an inner and an outer is provided between the cylinder 24 and the handle 26, and the wire 27 is pulled by the operation of the handle 26 to expand and contract the rod 28 of the cylinder 24. Is possible.

29 is a handle provided at the tip of the back frame 21,
30 and 30a are gate-shaped protection pipes provided on both sides of the bed frame 13, and the protection pipes 30 and 30a are bed frames.
Stoppers 31, 31 that are pivotally attached to both sides of 13 and that keep the protection pipes 30, 30a in an upright fixed state.
equipped with a.

Further, 32, 32a ... Are a number of auxiliary frames provided on the bed frame 13, and a number of auxiliary frames 33, 33a are also provided on the backrest portion 14, and the damper 1 is also provided.
The installation positions of 7, 17a, 18, and 18a may be reversed upside down, that is, in the embodiment, the trolley portion 3 is 3 points and the bed portion 4 is 2 points, but the trolley portion 3 is 2 points and the bed portion is 2 points. 4 may be supported at three points, or the main vibration absorbing action can be achieved even if the dampers 17, 17a, 18, 18a are not tilted and are vertical.

Next, the operation of the stretcher according to the present invention will be described. A sick person or the like is placed on the bed portion 4, the protection pipes 30 and 30a are vertically fixed, and the handle 26 is operated as necessary to operate the backrest portion. Inclining 14 at an appropriate angle,
When the stretcher 1 is run, if there are irregularities on the road surface, the dampers 17, 17a, 18, 18a of the shock absorbers 5 and 5a will expand and contract to absorb the vibrations and shocks, and the vibrations and the like will not be transmitted to the sick person.

The four shock absorbers 5 and 5a (damper 17,
17a, 18, 18a) is arranged by one damper 17a for the lighter side of the sick person and three dampers 17, 18, 18a for the upper body side of the sick to support human weight balance. Also, the four dampers 17, 17a, 1 of the shock absorbers 5, 5a
Since 8 and 18a are mounted in an inclined state, even if the stretcher 1 is fixed to the ambulance with the vertical frames 6 and 6a (constant wheelbase) of the bogie unit 3, the inertial force in the front-back direction ( Vertical G), the shock absorbers 5 and 5a (dampers 17, 17a, 18 and 18a) expand and contract to move the weight of the sick person, etc., and the bed part 4 tilts and moves slightly in the front-back direction to move vertically and horizontally. The inertial force is dispersed and absorbed, and the lateral inertial force (lateral G) is absorbed by the two dampers 18 and 18a in the same manner.

[0020]

In summary, according to the present invention, since the bed portion 4 is installed on the carriage portion 3 via the shock absorbers 5 and 5a, the shock absorbers 5 and 5a (dampers 17, 17a, 18 and 18a) contract and vibrate. ,
Shocks, gravity, etc. are directly absorbed so that the sick person does not feel vibrations, shocks, vertical G, horizontal G, etc. generated from road surface unevenness during traveling and transportation of the stretcher 1.

Further, the shock absorbers 5 and 5a are composed of two sets of two dampers 17, 17a, 18 and 18a, and the dampers 17 and 17a are installed obliquely in the front-rear direction of the carriage 3 and at the same time, the carriage is mounted. Since the dampers 18 and 18a are installed in the front left and right directions of 3, the shock absorbers 5 and 5a (dampers 17, 17a, 18, 18a)
Contracts and displaces, and the bed 4 is displaced while sinking in a substantially horizontal state to absorb vibrations, etc., the bed 4 does not tilt, the sick person does not feel uncomfortable, and the vertical G Mainly the dampers 17 and 17a, and the lateral G can be absorbed by the dampers 18 and 18a. Even if the standard of the ambulance and the stretcher 1 are the same, the trolley part 3 conforms to the above standards. Therefore, even if a configuration that absorbs gravity, shock, etc. is added,
Since the wheel base of the carriage unit 3 is constant, the method of fixing it to the ambulance or the like can be the same as the conventional method.

Further, since the two sets of dampers 17, 17a, 18 and 18a have different inclination directions, when a sick person or the like is placed on the bed portion 4, the bed portion 4 sinks in the vertical direction on average and the trolley. The front-rear relationship is unchanged at the position of the bed portion 4 with respect to the portion 3, and the bed portion 4 having a considerable weight with respect to the carriage portion 3 can be stably supported, which is a great practical effect.

[Brief description of drawings]

FIG. 1 is a plan view of a stretcher according to the present invention.

FIG. 2 is a side view of the stretcher of FIG.

FIG. 3 is a front view of the stretcher of FIG.

FIG. 4 is a partially enlarged perspective view of a front damper portion.

FIG. 5 is a partially enlarged perspective view of a rear damper portion.

FIG. 6 is a partially enlarged perspective view of a backrest portion.

[Explanation of symbols]

 3 Bogie part 4 Bed part 5, 5a Damper 17, 17a Damper 18, 18a Damper

Claims (3)

[Claims] 1. A stretcher in which a bed portion is installed on a trolley portion via a shock absorber. 2. The shock absorber is composed of two sets of two dampers, and the damper is installed obliquely in the front-rear direction of the bogie part, and the damper is installed obliquely in the front left-right direction of the bogie part. The stretcher according to claim 1. 3. The stretcher according to claim 2, wherein the two sets of dampers have different inclination directions.