JP4036439B2 - Elevating operation mechanism in stretcher - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a lifting operation means in a stretcher that moves up and down by manual operation.
[0002]
[Prior art]
For example, a stretcher used as a means for moving a patient or the like is suitable for an emergency or when moving a serious patient. In such a stretcher, an elevating mechanism is indispensable as means for adjusting the height in order to easily transport the patient and transfer it to an operating table or an examination table.
[0003]
By the way, as the lifting mechanism of the stretcher, there is one that lifts and lowers using hydraulic power or electric power. By using these lifting mechanisms, the burden on the lifting operation is greatly reduced. However, this type of stretcher has problems such as a need for a safety device for preventing an erroneous operation during ascending / descending, and an increase in the weight of the moving operation because it becomes heavier. Moreover, it has become expensive compared with what raises / lowers manually.
On the other hand, there are many stretchers that can be lifted and lowered manually. This manual lifting mechanism uses a telescopic rod that expands and contracts by rotating the screw, or operates an X-type link frame by rotating the screw. This type is relatively lightweight. It has an advantage that it can be easily operated because of its light weight.
[0004]
In the lifting mechanism by manual operation as described above, the ease of use of the stretcher varies greatly depending on the mounting position of the lifting operation means, that is, the lifting handle. For example, if the lifting / lowering handle is provided on the head side or the foot side of the stretcher, it is relatively easy to operate by pushing it from the side of the stretcher to the bed side when laying on the bed or the like. After that, the height is adjusted with the bed etc., but at this time it moves to the head side or the foot side of the stretcher and operates, and there is a disadvantage that it can not be replaced quickly in an emergency etc. is doing. Further, the patient's body cannot be sufficiently held from the head side or the foot side during the raising / lowering operation, and there is a fear that the patient may feel uneasy.
[0005]
[Problems to be solved by the invention]
The present invention has been made in view of the above problems, and in a stretcher using a manually operated lifting mechanism so that a safe and easy operation can be performed, the lifting operation means is arranged on the side of the mounting table, and this It is an object of the present invention to make it possible to store the lifting operation means so as not to obstruct the overlap with the bed or the like.
[0006]
[Means for Solving the Problems]
Elevation operating means in stretcher according to claim 1 includes a drivable vehicle body frame on the floor, a column portion erected on the body frame, substantially rectangular table in a plan view is supported by the support portion And an elevating mechanism provided in the support column, and the elevating mechanism can be expanded and contracted by forward / reverse rotation of a screw. The lifting / lowering operating means for operating the expanding / contracting means is switched between a vertically movable state that can be lifted and lowered from at least one side of the longitudinal side of the mounting table and a storage state along the support column. operation so that it becomes, the lifting hand with pivotally handle bearing at one end of the elastic means so as to be rotatable in a substantially horizontal plane, to be inserted into the handle bearing Configured to gear which is fastened to the end portion and a gear which is fixed to the threaded end of the stretching means is engaged only when said lift state, further, the horizontal plane of the handle bearing at elevatable state And a rotation lock mechanism for preventing the rotation operation in the inside, and by releasing the rotation lock mechanism, the handle bearing is rotated in the plane along the column portion, thereby the stretcher is moved to the bed. It is characterized in that the lifting handle is configured not to be an obstacle when it is stacked on the same.
Elevation operating means in stretcher according to claim 2, arranged a lifting operation means according to the left and right sides of the stretcher to claim 1, in stretcher which enables lifting operation from right or left side of the stretcher, When one lifting operation means is used so that the lifting operation means arranged on both side portions cannot be lifted simultaneously, the other lifting operation means cannot be rotated in a substantially horizontal plane. In addition, a free end portion of a plate pivotally attached so as to be rotatable with respect to each other is pivotally attached to the handle bearing, and a spring for biasing the handle bearing so as to rotate in a direction along the support column is stretched, When one operating handle is in use, when the other operating handle is rotated, the plate cannot contact the guide member fixed to one end of the elevating means and rotate. Characterized in that the configuration was.
[0007]
According to the first aspect of the present invention, in the stretcher that moves up and down using the lifting mechanism by manual operation, the lifting operation means is used so that the lifting operation can be performed from both sides of the mounting table. A series of operations can be performed in the state of being placed on the side of the mounting table until the lifting operation is performed. In addition, the lifting / lowering operation means has a state in which the lifting / lowering handle protrudes to the side so that the lifting / lowering operation can be performed, and a recess space is formed on the bottom surface of the mounting table when laid on the bed or the like so Is configured to be able to rotate in a substantially horizontal plane from the state where it can be moved up and down to the side where it is retracted along the support column , and by stretching the stretcher instead of lying on the bed etc. Falling prevention at the time of transfer of can be achieved, and transfer operation can be performed more safely. Furthermore, a rotation lock mechanism is provided to hold and restrain the rotation of the handle bearing in a substantially horizontal plane so that the lift handle is properly rotated at the lift operation position. It is held and restrained in a state where the side gear is engaged, and the lifting operation of the lifting handle can be normally performed without rattling. According to the second aspect of the present invention, the elevating operation means is provided so that the elevating operation can be performed from either the left or right side of the mounting table, and there is no need to consider the orientation of the patient. In addition, when one lifting operation means is set at the operating position, the other lifting operation means is configured so that it cannot be rotated from the retracted state. bed or the like becomes possible intrusion, the overlap table and bed sufficiently, never to fall from between the stretcher and the bed during FAIL. Furthermore, the one lifting operation means and the extending / contracting means are always separated, and there is no need to worry about the lifting handle that is housed on the bottom surface of the mounting table and cannot be seen.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the raising / lowering operation means 1 which concerns on this invention is shown concretely, Embodiment is demonstrated based on attached drawing. 1 and 2 show a stretcher S provided with a lifting operation means 1 according to the present invention. This stretcher S is configured to support a mounting table 6 by erecting a column portion 5 having an elevating mechanism 4 on a vehicle body frame 3 having caster type wheels 2, 2,. In the present embodiment, the vehicle body frame 3 has a recessed space S ₁ opened below the mounting table 6 in front view (see FIG. 2) by reducing the height and configuring the support column 5 to be narrow. Is formed. With such a configuration, it is possible alongside as bed B and the like from entering between S ₁ the air, the susceptor 6 can be overlapped with the bed B and the like, can be performed ERROR more easily and safely It is comprised as follows.
[0009]
First, the vehicle body frame 3 is formed in a substantially H shape in a plan view by connecting a front frame 3a and a rear frame 3b respectively provided in the front and rear directions by a vertical frame 3c in the front and rear direction, and is caster type at the four corners. Wheels 2, 2,... Are attached, and are configured to be movable in both the front and rear and left and right directions. A column portion 5 is provided on the three body frames. The column portion 5 includes lower columns 7 and 7 fixed so as to stand on the vertical frame 3c, link members 8 and 8 pivotally attached to the lower columns 7 and 7, respectively, A parallel link mechanism mainly composed of upper struts 9 and 9 pivotally attached to the link members 8 and 8 is used. First, the lower support columns 7 and 7 are fixed to the vertical frame 3c in a state of being separated from each other in the front-rear direction, and hollow cylindrical bodies 7a and 7a are fixed to the upper ends of the lower support columns 7 and 7. And the cylinders 8a, 8b, 8c are fixed to the respective apexes of the link members 8, 8 formed in a substantially L shape in a side view, and the cylinders 8a, 8a and the cylinder 7a, 7a is pivotally attached to the pins 10 and 10 and the interlocking rod 11 is pivotally attached to the cylinders 8b and 8b of the link members 8 and 8 so as to be arranged forward and backward. The link members 8 and 8 are configured to rotate in the same phase. Furthermore, the cylinders 8c, 8c of the link members 8, 8 are fixed to the lower ends of the upper columns 9, 9,... Fastened to the lower surface of the base frame 12 that is rectangular in plan view. The cylindrical bodies 9a, 9a,... Are pivotally attached to pins 13 and 13 so that the base frame 12 can be moved up and down by the rotation of the link members 8 and 8. Reference numeral 14 denotes a reinforcing rod fixed between the upper and lower upper columns 9.
[0010]
The mounting table 6 is installed on the upper end of the support column 5 configured as described above, that is, on the base frame 12. The mounting table 6 has a bottom frame 16 configured in a lattice shape on support members 15, 15 fixed to the base frame 12, and a bottom plate 17 is fixed on the bottom frame 16, and the bottom frame 16 is fixed to the bottom frame 16. A mat 18 having a good cushioning property is laid on the plate 17. Reference numeral 19 denotes a side guard, which is pivotally attached to the bottom frame 16 so that it can be erected and used as a guard during transportation, and can be turned sideways during transfer to serve as a bridge to the bed B or the like. It can be used.
[0011]
Next, the elevating mechanism 4 provided in the stretcher will be described. The elevating mechanism 4 is formed by an expansion / contraction means 20 attached between the link members 8 and 8 and the base frame 12, and the expansion / contraction means 7 is a support shaft 21 that serves as an attachment portion to the link member 8 at one end. And a sliding pipe 23 having a nut member 22 fixed to the other end. The support shaft 21 is provided with a left and right air hole portion 21 a, and a pin 24 is inserted and fixed to the air hole portion 21 a and the cylinder 8 b of the link member 8. The nut member 22 is screwed with a female screw 26 on one end of which an anti-blurring collar 25 is pivotally supported. The sliding pipe 23 is inserted into the support pipe 27. A support collar 28 is attached to one end of the support pipe 27 to prevent the sliding pipe 23 from shaking, and a fixed metal 29 is fixed to the other end. A bearing 30 is fitted inside the fixed metal 29, and the male screw 26 is supported on the bearing. A gear 31 is wedged on the other end of the male screw 26 and can be rotated in the forward and reverse directions by an elevating operation means 1 described later. The expansion / contraction means 20 configured in this way pivotally supports the support shaft 21 on the cylindrical body 8b of the link member 8 as described above, and has bearings 32 and 32 fixed to the side surface of the support pipe 27. The holes 12a and 12a drilled in the base frame 12 are pivotally attached by pins 33 and 33. That is, the nut member 22 is moved up and down by rotating the gear 31 forward and backward by the lifting operation means 1 described later, and the slide pipe 23 slides and the link members 8 and 8 rotate accordingly. The mounting table 6 is configured to move up and down.
[0012]
Next, the raising / lowering operation means 1 which operates the said expansion-contraction means 20 is demonstrated. When the expansion / contraction means 20 is attached to the stretcher S, the expansion / contraction means 20 is inclined, but the fixed metal 29 at the upper end of the expansion / contraction means 20 has a bracket portion 29a that can be rotated in a substantially horizontal plane in this state. 29a is integrally formed. A handle bearing 35 is pivotally attached to the bracket portion 29a so that the elevating handle 34 can be rotated in a substantially horizontal plane, and a gear 36 wedged at the tip end of the elevating handle 34 when the elevating handle 34 is raised and lowered. The rotation lock mechanism 37 that holds and restrains the meshing of the gear 31 of the expansion / contraction means 20 and at least the lifting / lowering operation means 1 on the left and right sides are stored. First, in the handle bearing 35, a vertical bearing pipe 40 is fixed to one end portion side of the bearing pipe 38 via a plate 39, and a U-shaped plate 41 is fixed to a substantially middle portion of the bearing pipe 38. Further, nuts 42 and 43 are fixedly attached, and a bearing pipe 40 is pivotally attached to the bracket portion 29a. Note that the handle bearing 35 is configured to be bilaterally symmetric, and is pivotally attached to bracket portions 29 a and 29 a disposed on the left and right sides of the fixed metal 29. The bearing pipe 38 is wedged with a gear 36 that meshes with the gear 31 of the expansion / contraction means 20 at one end of a lifting handle 34 bent in a crank shape. Reference numeral 44 denotes a collar fixed to the elevating handle 34, and reference numeral 45 denotes a grip. Further, a cover (not shown) of the lifting operation means 1 is fixed to the nut 43.
[0013]
The rotation lock mechanism 37 will be described. The lock mechanism 37 is a state in which the gear 31 of the expansion / contraction means 20 and the gear 36 of the lifting / lowering handle 34 are engaged with each other, and the lifting / lowering operating means 1 is held in a state where the lifting / lowering operation 1 is lifted / lowered to restrict rotation in a substantially horizontal plane. is there. First, restriction on forward rotation will be described. It is formed by contact between a stopper member 47 fixed to the tip of the L-shaped plate 46 fixed to the lower surface of the fixed metal 29 and a bolt 48 screwed to the nut 42 fixed to the handle bearing 35. It is. Next, a description will be given of the lock mechanism 37 that holds the lifting / lowering operation means 1 in a state of lifting / lowering . The lock mechanism 37 includes a lock member 49 pivotally attached to the U-shaped plate 41 of the handle bearing 35 and a guide member 50 fastened to the upper surface of the fixed metal 29. The lock member 49 is formed by fixing a bearing 52 and an operation lever 53 to a plate 51 provided with a lock piece 51 a at an end, and the lock member 49 is freely rotatable by a pin 54 on a U-shaped plate 41. It is pivotally attached to. The guide member 50 is formed by fixing fan-shaped guide plates 55, 55 to a fixed plate 56, and the guide member 50 is fixed to the upper surface of the fixed metal 29. The guide member 50 and the lock member 49 are locked around the bearing 52 when the gear 31 and the gear 36 are engaged with each other when the lock piece 51a slides along the inner surface of the guide plate 55 by the forward rotation of the handle bearing 35. 49 rotates, and the lock piece 51 a is engaged with the end surface of the guide plate 55. In this state (see FIG. 7 ), the lifting operation means 1 is restrained from rotating in a substantially horizontal plane, and the meshing of the gear 31 and the gear 36 becomes appropriate, and the lifting handle 34 can be rotated. When the operation lever 53 is rotated backward from this state, the engagement between the guide plate 55 and the lock piece 51a is released, and the handle bearing 35 can be rotated backward to be retracted along the base frame 12. It becomes possible. Reference numeral 57 denotes a spring which urges the lock member 49 to rotate in a direction of automatically engaging the end face of the guide plate 55 by rotating the handle bearing 35 forward.
[0014]
Furthermore, in this embodiment, the raising / lowering operation means 1 is comprised so that a raising / lowering handle may not protrude to the side surface which does not raise / lower. This is because a plate 58 having holes 58a and 58a at both ends is pivotally mounted between U-shaped plates 41 and 41 fixed to the left and right handle bearings 35 and 35, respectively. 58 holes 58a and 58a are pivotally attached by a pin 59, and a spring 60 is stretched between the pin 59 and the support member 15. That is, even if the lifting handle 34 on the side accommodated in FIG. 5 is rotated forward, the plate 58 contacts the guide member 50 and cannot be rotated any further. Further, the lifting / lowering operation means 1 that has released the rotation lock mechanism 37 is biased by the spring 60 toward the side that rotates backward so that it is always stored.
[0015]
When using the stretcher S provided with the lifting operation means 1 configured as described above, first, the stretcher S is moved to the side of the bed. After that, it is moved from the side of the stretcher S to the bed side, shifted to a position where the mounting table 6 and the bed can be sufficiently overlapped, and the lifting operation means 1 is rotated forward. At this time, the lock piece 51a of the rotation lock mechanism 37 moves along the inner surface of the guide plate 55, and the lock piece 51a and the end face of the guide plate 55 are automatically engaged by the spring 57, so that the lifting and lowering operation is possible. It will be in the state which cannot be rotated to the side used as the accommodation state along a support | pillar part . Further, in this state, the stopper member 47 and the bolt 48 attached to the handle bearing 35 come into contact with each other , and the rotation of the handle bearing 35 from the state in which the handle bearing 35 can be moved up and down to the side opposite to the storage side is restricted. It is in a state. That is, the handle bearing 35 is locked in a state of perpendicularly intersecting the expansion / contraction means 20 in a plan view, and the rotation operation character of the elevating handle 34 passed through the handle bearing 35 is connected to the gear 31 on the expansion / contraction means 20 side. When the lifting / lowering handle 34 is rotated, the gear 31 on the telescopic means 20 side and the gear 36 provided on the lifting / lowering handle 34 can be rotated without wobbling in a properly meshed state. The elevating handle 34 is rotated and the telescopic means 20 is operated to raise and lower the mounting table 6. The patient is transferred while being at the height of the bed. After this transfer, the mounting table 6 may be raised and moved to another location. Moreover, the lifting operation means 1, when one of the lift operating means 1 is in a lifting operational state, and the other of the elevation manipulation unit 1 is configured so as not be rotated, one of the lift operating means 1 i.e., lifting When the handle 34 is operated, the other lift handle 34 does not rotate. Further, by forming the stretcher S as concave space S ₁ to the mounting table 6 the lower surface can be taken, the lifting handle 34 is also housed inside, take sufficient overlap with the bed, to prevent the patient's falling or the like it can. Further, in the present embodiment, the expansion / contraction means 20 is attached to the link member 8 and the base frame 12 and is in an inclined state, but the fixed metal 29 at the distal end of the expansion / contraction means 20 is rotated in a substantially horizontal plane. By providing the bracket portion 29a that can be moved, the elevating operation means 1 can be rotated without contacting the base frame 12, and the elevating operation handle 34 can be further accommodated on the support column 5 side.
[0016]
【The invention's effect】
According to the first aspect of the present invention, since the stretcher is provided with a lifting mechanism that can be lifted and lowered by manual operation, the stretcher can be configured to be relatively lightweight, and accordingly, a moving operation can be easily performed. In addition, since the lifter's lifting / lowering operation means can be operated from the side of the mounting table, it is possible to perform each operation from the same place when performing the lifting / lowering operation from the side to the bed etc. Since it is possible to support the patient on the mounting table with the other hand that is not lifted, the patient can be more secure. Further, when the lifting / lowering means is not operated, the locking means is released so that the lifting / lowering means is urged to turn to the side along the supporting column in a substantially horizontal plane. a state along, when superimposing the moving time or bed and stretcher, said lifting operation means is not an obstacle. In other words, it is possible to prevent the lifting handle from being damaged by contacting the wall or the like, or to be lifted and lowered while the lifting handle is applied to the floor of the bed, and stored in a position that does not interfere with the removal of the handle. Because it can, you can also prevent the lifting handle from being lost. In addition, in the state where the lifting / lowering operation position, that is, the gear of the expansion / contraction means and the gear of the lifting / lowering handle mesh with each other, the front / rear rotation is held and restrained, so that the lifting / lowering handle can be reliably rotated. According to the invention of claim 2, the lifting operation means is provided on both sides so that it can be operated from either the left or right side of the mounting table, and transfer and transfer can be performed without worrying about the orientation of the patient. it can. Furthermore, when one raising / lowering operation means is made into the raising / lowering state, it is comprised so that it cannot rotate from the state which accommodated the other raising / lowering operation means. The operation of one lifting handle also rotates the other lifting handle to prevent the lifting handle from coming into contact with a third party. since concave space S ₁ is formed, the overlap is sufficiently taken between the mounting table and the bed or the like, without fall of the patient at the time of ERROR, and has an advantage of being able to work.
[Brief description of the drawings]
FIG. 1 is an overall side view showing a stretcher equipped with lifting operation means according to the present invention. FIG. 2 is an overall front view thereof. FIG. 3 is a side sectional view showing expansion / contraction means. FIG. 5 is a perspective view of the main part showing the assembled state of the lifting operation means. FIG. 6 is a plan view of the main part showing the state in which the lifting operation means on both the left and right sides are housed. Principal part plan view showing the state that can be moved up and down 【Explanation of symbols】
DESCRIPTION OF SYMBOLS 1 Elevating operation means 2 Wheel 3 Body frame 4 Elevating mechanism 5 Strut part 6 Mounting table 20 Extending means 26 Male screw 31 Gear 34 Elevating handle 35 Handle bearing 36 Gear 37 Rotation lock mechanism S Stretcher S ₁ Recessed space

Claims (2)

And drivable vehicle body frame on the floor, a column portion erected on the body frame, and a substantially rectangular mounting table in a plan view is supported by the support portion, and a lifting mechanism is provided in the strut In the stretcher capable of moving up and down, the strut portion is configured to be narrow with respect to the mounting table , and the lifting mechanism is configured to be operated by an expansion / contraction means that expands and contracts by forward / reverse rotation of a screw. The lifting / lowering operating means for actuating the one end of the expansion / contraction means so as to be switchable between a lifting / lowering state in which the lifting / lowering operation can be performed from at least one side of the longitudinal side of the mounting table and a storage state along the support column. with pivotally so as to be rotatable in a substantially horizontal handle bearing part, the threaded end of the gear and the elastic means being fastened to the end portion of the lifting handle which is inserted into the handle bearing Configured to the fastened to gear meshes only when said lift state, further, provided with a rotation locking mechanism for preventing rotational operation in the horizontal plane of the handle bearing at lifting state, the By releasing the rotation lock mechanism and rotating the handle bearing in a plane along the support column , the lift handle is configured not to be an obstacle when the stretcher is stacked on a bed or the like. Elevating operation mechanism for the stretcher. In the stretcher in which the elevating operation means according to claim 1 is arranged on both the left and right sides of the stretcher, and the elevating operation means can be operated from either the left or right side of the stretcher, When one lifting operation means is used so that it cannot be moved up and down at the same time, the other lifting operation means is pivoted so that it can be rotated with respect to each other so that it cannot rotate in a substantially horizontal plane. The free end of the plate is pivotally attached to the handle bearing, and a spring is urged so that the handle bearing rotates in the direction along the support column. When one of the operating handles is in use, the other in when rotating the operation handle stretcher, characterized by being configured so that it can not rotate in contact with the guide member in which the plate is secured to one end of the lifting means Descending operation means.

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