JP2008099952A - Stretcher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stretcher, enabling rotatable casters to easily move right and left and rotate at any height even when the leg parts of the stretcher loaded on an ambulance vehicle are folded to use the stretcher in a low state, and to provide a stretcher, enabling the caster to be fixed to use the stretcher with safety even when the leg parts are completely folded to naturally apply brakes on the casters of the rear leg parts and use the stretcher in a low position. <P>SOLUTION: The rear legs of the stretcher 100 are four legs composed of rear legs 14 and rear auxiliary legs 16; the upper end parts of the respective legs are stretched on both sides of an upper frame 11, and a fixed caster 18 is mounted on a front leg 12; rotatable casters 19 are mounted on the rear legs through a link operating part 21. A front end part of a support arm 20 supporting the rear auxiliary legs 16 is journaled to the link operating part 21, and the shafts of the casters 19 are vertically held by the rear main legs 14 and the rear auxiliary legs 16, whereby even when the stretcher is set at any height, the stretcher 100 can be rotated forward and backward and right and left. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a stretcher placed on an ambulance or the like. More specifically, it is a stretcher mounted on an ambulance vehicle, and when the leg of the stretcher is folded, the rotatable caster rotates even when the stretcher is used in a low state, and the leg is completely folded. The present invention relates to a stretcher in which a rotatable caster can be fixed by a brake.

  Stretchers placed on ambulances, etc. can be easily placed and fixed on ambulances, etc., and when placed on an emergency rescue site, the height of the stretcher can be adjusted according to the emergency patient. Many improvements such as the shape of a stretcher placed on a stretcher for transporting an emergency patient have been proposed. Here, ambulances and the like are equipment (referred to as “stretchers”) for transporting patients, etc. when they are discharged from hospitals, hospitals, hospitals, and social welfare facilities. This refers to an equipped vehicle (hereinafter referred to as a “patient transportation vehicle”).

  Patent Document 1 includes a bed portion on which a patient is placed, a leg that is foldable on the bed portion, is unfolded as the bed portion is lifted and folded as the bed portion is lowered, and the leg A stretcher provided with wheels provided in the initial stage of the lifting operation for raising the bed part from a lowest position to a predetermined midway position between the lowest and highest positions. A stretcher is disclosed that includes an initial lifting device that applies a force in the upward direction.

  Patent Document 2 uses a constant load spring as a slide mechanism for changing the position of the upper frame of the stretcher up and down, and includes a mechanical lock mechanism for stopping the upper frame of the stretcher at an arbitrary position. The locking mechanism for fixing the sliding of the front leg auxiliary frame for assisting the front leg part of the letcher, the support part of the rear leg auxiliary frame for assisting the front leg, the front leg auxiliary frame and the rear leg, and the center rail There are disclosed a stretcher characterized in that a roller for smooth sliding is provided therebetween, and a stretcher placed on the stretcher.

  In Patent Document 3, in a stretcher composed of a carriage part and a stretcher part that can be attached to and detached from the carriage part, the carriage part is pivotally attached to the lower side of the base frame, and the tip side of the stretcher turns back and forth. A front leg portion and a rear leg portion that are possible, and a rolling wheel is attached to each of the front leg portion and the rear leg portion, and the front leg portion and the base frame between the front leg portion and the rear leg portion and the base frame Provided with a posture switching device capable of switching the posture between the state where the rear leg is pivoted forward and backward from the standing state, respectively, and the state where the rear leg is held while standing, and the front leg is detected by detecting the vehicle floor surface In order to provide a detecting device that automatically switches the posture switching device of the front part to a state in which the front leg part can fall down to the rear side, the detecting device is provided in an auxiliary frame that is rotatable in front of the base part of the front leg part. A reverse rotation prevention mechanism that holds the wheel in contact with the floor and the auxiliary After wheel is actuated Setto and backstop mechanism to the floor, the in-vehicle stretcher which is characterized by comprising a motion mechanism for releasing the locked state of the posture switching device is disclosed.

  As described above, various improvements have been made on the stretcher placed on an ambulance or the like, but it is not yet sufficient. In particular, the stretcher has a fixed caster on the front leg and a rotatable caster on the rear leg, so that the patient can move smoothly back and forth and right and left when transporting the patient. ing. However, as the pivotable caster attached to the rear leg folds the leg and gradually lowers the stretcher, the caster's axis gradually goes outward as the leg goes outward. . Therefore, when the stretcher is adjusted to a medium height, the axis of the rotatable caster is turned sideways, making it difficult for the caster to rotate, and the stretcher cannot move freely. Therefore, if the patient is held at a low position and the stretcher is moved, the stretcher can only be moved back and forth, but when the stretcher is rotated, the rotation of the rear leg that has stopped rotating is possible. There was a problem that a movable caster could not rotate due to an obstacle.

Further, when the emergency patient is accommodated at a low position by folding the leg of the stretcher, there is a problem that the brake petal of the rotatable caster of the rear leg enters the inside of the stretcher and it is difficult to apply the brake. When handling stretchers on sloping terrain, etc., it is very dangerous to forget to apply the brake and the stretcher suddenly starts to move, and there has been a demand for the appearance of a stretcher that can be handled safely even if the brake is forgotten.
JP-A-2005-21626 WO 2004/078087 JP 2003-10250 A

  The present invention folds the leg of a stretcher mounted on an ambulance vehicle, and even if it is used in a low state, the rotatable caster can be rotated and moved to the left and right, and easily rotated at any height. Provide a stretcher. In addition, when the legs are completely folded, the rear leg casters are braked naturally, and even when the stretchers are used in a low position, the casters are fixed and can be used with confidence.

  As a result of intensive studies to solve the above-mentioned problems, the stretcher mounted on the patient transportation vehicle has an upper frame for placing a stretcher on the upper part and a front leg pivotally attached to the upper frame. And the rear leg, the rear leg as the four legs of the rear main leg and the rear auxiliary leg, the upper end of the rear auxiliary leg is mounted on both sides of the upper frame, and fixed to the front leg A rotatable caster is attached to the caster and the rear leg, and a link operating part is attached to the front end of a support arm that supports the rotatable caster, and the rotatable caster and the rear leg are attached to the link operating part. Attaching one end of the support arm, attaching a rear auxiliary leg to the rear end of the support arm, and holding the axis of the caster vertically by the rear leg and the rear auxiliary leg, Anyway, a stretcher that can move back and forth and left and right It was.

  A feature of the present invention is a stretcher mounted on a transport vehicle such as a patient having an upper frame for placing a stretcher on the upper part, a front leg and a rear leg pivotally attached to the upper frame. A rear auxiliary leg having an upper end mounted on the upper frame, a front fixed caster is attached to the lower end of the front leg, and one end of a support arm is pivoted on the lower end of the rear auxiliary leg. The other end of the support arm is pivotally attached to the rear part of the link operating part that supports the pivotable caster, and the pivotable caster and the lower end part of the rear leg are pivotally attached to the front part of the link working part. And, it is a stretcher characterized in that the axis of a caster that is rotatable by the rear auxiliary leg is vertically held through the rear leg and the support arm.

  A link operating part that pivots on the rear leg support plate that fixes the upper ends of the rear legs and rear auxiliary legs to the upper frame from the middle to the rear of the stretcher, and supports the lower casters on the rear legs. The pivot of the pivotable caster is secured by pivoting on the inner side of the rear part, pivoting the rear auxiliary leg on one end of the support arm, and pivoting the other end of the support arm on the inner front part of the link operating part. It became possible to always keep it vertical.

  Another feature of the present invention is that when a fixed brake for fixing a wheel of a caster is installed on the link operating unit from the top of the rotatable caster installed on the link operating unit, and the upper frame is at the lowermost part. 2. The strut according to claim 1, wherein the upper frame and the brake button of the fixed brake projecting on the link operating portion come into contact with each other, and the upper frame presses the brake button to apply the brake to the rotatable caster. It is a letcher.

  The lower end of the rear leg and one end of the support arm are pivotally attached to the link operating part, and a rotatable caster is attached to the lower part of the link operating part. When the brake mechanism that fixes the wheels of the casters that can rotate through this link operating part is installed and the upper frame of the stretcher is at the lowest position, the upper frame and the brake button of the fixed brake mechanism come into contact with each other. This is a safe stretcher where the frame presses the brake button and brakes are applied to the pivotable casters so that you can never forget to apply the brakes.

  A rear end portion of the support arm is pivotally attached to the lower end portion of the rear auxiliary leg, and a link operating portion that supports a rotatable caster is pivotally attached to the front end portion of the support arm. The caster and the lower end of the rear leg are pivotally attached, and the axis of the caster that is rotatable by the rear auxiliary leg can be held vertically via the rear leg and the support arm. Even if the height of the stretcher is changed from the highest position to the lowest position, the rotatable caster can be rotated and the patient can be accommodated and transported quickly.

  In addition, by installing a brake mechanism on a rotatable caster, the brake is automatically applied when the stretcher is in its lowest position, so that you can not forget to apply the brake. Even if the patient is accommodated, the stretcher is fixed and can be accommodated safely.

  The stretcher placed on the transport vehicle for patients according to the present invention can be automatically rotated when the caster is freely rotated even when the platform on which the stretcher is placed is lowered. It is a stretcher that can be braked and never forget to apply the brake. The stretcher of the present invention will be described in detail below with reference to the drawings. However, the stretcher of the present invention may be any stretcher that can place a stretcher and accommodate and transport an emergency patient. The present invention is not limited to the examples.

  In addition, the vehicle on which the stretcher of the present invention is placed is not limited to an ambulance, and transports the patient, etc., when the patient is transferred to / from a medical institution, hospital visit, transfer, social welfare facility, etc. In addition to a vehicle (equipment for transporting patients, etc.) provided with a facility for the purpose, for example, a vehicle on which a stretcher such as a hearse can be placed is also included.

  As shown in FIG. 1, the stretcher 100 of the present invention includes an upper frame 11 for placing a stretcher 32 on the upper part, and a fixed caster 17 that rotates when placed on an ambulance on the front lower part of the upper frame 11. It is installed. The legs of the stretcher 100 are pivotally attached to the front leg 12 with the upper end pivotally attached to the upper frame 11 and the rear leg support plate 29 attached to the upper frame 11 with the upper end of the rear leg 14 respectively. It is supported by the front leg auxiliary frame 13 and the rear leg auxiliary frame 15. When placing the stretcher 100 on the ambulance base, if the pusher is pushed from behind the stretcher 100, the front leg 12 comes into contact with the ambulance base and the 13b portion of the front auxiliary leg frame 13 moves rearward. Thus, the front leg 12 is folded backward. When the stretcher 100 is lowered, the stretcher 100 can be lowered by moving the 12a portion backward with the front leg 12b 12b as a fulcrum and spreading the front leg 12 forward. The rear leg 14 is composed of four legs with a rear auxiliary leg 16 having an upper end mounted on the upper frame 11. The rear leg 14 and the rear auxiliary leg 16 move backward both when the stretcher 100 is placed on an ambulance and when the stretcher is lowered.

  In order to accommodate and transport the patient in the stretcher 100, a front fixed caster 18 is attached to the lower end of the front leg 12, and one end of the support arm 20 is attached to the lower end of the rear auxiliary leg 16. Further, the other end of the support arm 20 is pivotally attached to the rear portion of the link operating portion 21 that supports the rotatable caster 19, and the rotatable caster 19 is pivotally attached to the front portion of the link operating portion 21. . The lower end portion of the rear leg 14 is pivotally attached to the front inner side of the link operating portion 21. In this way, no matter what height the stretcher 100 is adjusted to, the pivotable caster shaft 22 is maintained vertically by the rear leg 14 and the rear auxiliary leg 16 via the support arm 20. Can do.

  As shown in FIG. 2, the rear leg 14 is bent into a square shape at the lower end of the rear leg 14, and the upper end part 14 a of the rear leg 14 is pivotally attached to the upper frame 11. A rear leg support plate 29 (see FIG. 3) is attached to the upper frame. The lower end portion 14 c of the rear leg 14 is pivotally attached to the rear portion 21 a of the link operating portion 21 that is pivotally attached to the front portion of the support arm 20. A shaft attachment member (see FIG. 1) for attaching the rear leg auxiliary frame 15 (see FIG. 1) to the middle 14b of the rear leg 14 is attached. The rear auxiliary leg 16 is bent gently in the middle, and the upper end 16a is pivotally attached to the rear leg support plate 29 (see FIG. 3). The front portion 20 b of the support arm 20 is pivotally attached to the front portion 21 b of the link operating portion 21. The lower end portion 16b of the rear auxiliary leg is pivotally attached to the rear portion 20a of the support arm 20. As a result, the rear auxiliary leg 16 pushes the link operating part 21 forward via the support arm 20 to hold the axis of the rotatable caster vertically.

  FIG. 3 shows a rear leg support plate 29 that is screwed onto the upper frame 11 of the stretcher 100. 3 (3-1) shows a side view of the rear leg support plate 29, and FIG. 3 (3-2) shows a front view of the rear leg support plate 29. The rear leg support plate 29 includes a screwed portion 29a that is screwed to the upper frame 11 of the stretcher 100, a rear leg shaft-attached portion 29b, and a rear auxiliary leg shaft-attached portion 29c.

  FIG. 4 shows a state in which the rear leg support plate 29 is screwed to the upper frame 11. The screwed portion 29a of the rear leg support plate 29 is screwed to the upper frame 11 of the stretcher 100, the upper end portion of the rear leg 14 is attached to the rear leg shaft attaching portion 29b, and the rear auxiliary leg 16 is attached to the rear auxiliary leg shaft attaching portion 29c. The upper end of each is axially attached.

  FIG. 5 shows a state in which a rotatable caster 19 attached to the rear leg 14 of the stretcher 100 and the leg are attached. A link operating unit 21 is installed on the caster 19. A support arm 20 is pivotally attached to the front side 21 b inside the link operating part 21, and a rear leg 14 is pivotally attached to the inner rear side 21 a of the link operating part 21. A rear auxiliary leg 16 is pivotally attached to the rear 20 a of the support arm 20. The brake mechanism (25, 25) of the rotatable caster 19 will be described in the next figure. The support arm 20 to which the rear auxiliary leg 16 is attached presses the front 21b of the link operating part 21 to hold the caster shaft 22 vertically.

  FIG. 6 shows an attached state of a rotatable caster 19 and a brake for fixing it. A link operating part 21 is mounted on a shaft 22 of a rotatable caster, and a front part 20b and a rear leg 14 of the support arm 20 are axially attached inside the link operating part 21. A fixed brake 25 is mounted on the shaft 22 of the rotatable caster and through the link operating part 21. The fixed brake 25 is actuated by a brake button 26 protruding above the link operating unit 21 and presses and fixes the tire of the rotatable caster 19. A foot brake 23 is further attached after the rotatable caster 19, and the foot brake 23 fixes the tire by stepping on the brake pedal 24.

  FIG. 7 shows components of the fixed brake 25. The fixed brake 25 includes a brake button 26 protruding from the head of the link operating unit 21, a brake shaft 27 that transmits the force of the brake button 26, a brake shaft sliding portion 30, and a pressing portion 28 that presses a tire below the brake shaft 27. ing. The brake button 26 and the brake shaft 27 that transmits the force of the brake button 26 may be integrated, or the brake shaft 27 and the pressing portion 28 may be integrated, and the upper frame 11 presses the brake button 26. And as long as the press part 28 is a structure which can press a tire, the structure will not be specifically limited.

  FIG. 8 shows a state in which the fixed brake 25 is attached through the shaft 22 of the caster. The fixed brake 25 is mounted on the shaft 22 of the caster, and when the brake button 26 is pressed, the force is transmitted by the brake shaft 27 through the brake shaft sliding portion 30, and the pressing portion 28 is rotatable. The tire of the caster 19 is strongly pressed and fixed. A spring member 31 is urged to the brake button 26, and the brake button 26 is normally released. The brake button 26 may be circular or square, and the shape of the brake button 26 is particularly limited as long as the brake is pressed by the upper frame 11 and the fixed brake 25 is activated when the leg is folded. It is not a thing.

  FIG. 9 shows a state where the brake button 26 of the fixed brake 25 is pressed by the upper frame 11. When the brake button 26 of the fixed brake 25 protruding on the link operating unit 21 is folded, when the upper frame 11 is at the lowest position, the upper frame 11 and the brake button 26 come into contact with each other and the brake button 26 is Pushed down and presses the tire. Thus, even if no brake operation is performed, when the upper frame 11 is lowered to the lowest position, the fixed brake 25 is applied, and the patient can be safely placed on the stretcher without forgetting to apply the brake.

  FIG. 10 shows a state in which the upper frame 11 presses the brake button 26 and presses the tire of the caster 19 that can be rotated by the fixed brake 25. The locking mechanism of the fixed brake 25 may be a method of pressing the brake button 26 with the upper frame 11 and locking it, or a method of pressing the brake button 26 with the foot and fixing it, and is not particularly limited to a method of pressing with the upper frame 11. . Further, examples of a mechanism for locking and releasing the rotatable caster 19 by the fixed brake 25 include a mechanism for locking by a first press and releasing by a second press. The mechanism for pressing, locking and releasing the rotatable caster 19 by the fixed brake 25 is not limited to the above, and any means for fixing the tire of the rotatable caster 19 by pressing with the fixed brake 25 may be used. Any method may be used.

  FIG. 11 shows a side view in which the legs (12, 14) of the stretcher 100 are folded to the lowest level. In the figure, reference numeral 11a denotes a fitting groove for fixing the head side of the stretcher (see FIG. 1), and 11b denotes a hook for fixing the foot side of the stretcher. When the patient is accommodated at a low position such as on the road, it is possible to reduce the burden on the patient and the emergency personnel by accommodating the patient on a stretcher at the low position and placing the patient on the stretcher 100 at the position. it can. Therefore, the brake mechanism of the present invention that can securely fix the stretcher 100 at a low position is useful.

A side view of the stretcher is shown. The side view which decomposed | disassembled the rear leg of the stretcher is shown. The side view and front view of the rear leg support plate which pivotally mount the rear leg are shown. The side view which screwed the rear leg support plate which pivotally attaches a rear leg to an upper frame is shown. The front view (rear part of a stretcher) of the caster and the rear leg installation state which can freely rotate is shown. The side view of the caster and the rear leg installation state which can freely rotate is shown. The disassembled side view of the fixed brake of the caster which can freely rotate is shown. The side view of the fixed brake part of a rotatable caster is shown. The perspective view of the fixed brake of a rotatable caster and an upper frame part is shown. The side view of the part of the fixed brake of a rotatable caster is shown. The side view which folded the leg part of the stretcher to the lowest step is shown.

Explanation of symbols

100: Stretcher 11: Upper frame 12: Front leg 13: Front leg auxiliary frame 14: Rear leg 15: Rear leg auxiliary frame 16: Rear auxiliary leg 17: Fixed caster 18: Front leg fixed caster 19: Rotation Free caster 20: support arm 21: link operating unit 22: caster shaft 23: foot brake 24: brake petal 25: fixed brake 26: brake button 27: brake shaft 28: pressing unit 29: rear leg support plate 30: brake Shaft sliding part 31: Spring member 32: Stretcher

Claims (2)

An upper frame for placing a stretcher on the upper part, and a stretcher mounted on a car for transporting a patient or the like having a front leg and a rear leg pivotally attached to the upper frame. It has a rear auxiliary leg mounted on the part, a front fixed caster is attached to the lower end of the front leg, and one end of a support arm is pivotally attached to the lower end of the rear auxiliary leg, so that it can rotate The other end of the support arm is pivotally attached to the rear part of the link operating part that supports the caster, the pivotable caster and the lower end part of the rear leg are pivotally attached to the front part of the link operating part, and the rear leg A stretcher characterized in that a shaft of a rotatable caster is vertically held by the rear auxiliary leg through the support arm. A fixed brake that fixes the wheels of the caster is installed on the link operating part from the top of the rotatable caster installed on the link operating part, and when the upper frame is at the bottom, the upper frame and the link operating part are 2. The stretcher according to claim 1, wherein the brake button of the fixed brake projecting on the upper surface is brought into contact with the upper frame and the brake is applied to the rotatable caster by pressing the brake button.

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