Electric wheel stretcher

Abstract

The utility model provides an electric wheel stretcher, and relates to the technical field of electric wheel stretchers. The electric wheel stretcher comprises an air spring, a handle, a back plate and a frame, one end of the back plate is rotationally connected with the frame, the handle is located below the back plate and rotationally connected to the other end of the back plate, the air spring is located below the back plate, a cylinder body of the air spring is hinged to the frame, and the handle is located below the back plate and rotationally connected to the other end of the back plate. And a switch of the gas spring extends to the handle so as to drive the telescopic length of the gas spring through rotation of the handle. And after the handle is rotated, the back plate can rotate relative to the frame, so that the use flexibility of the back plate is improved, and the use flexibility of the electric wheel stretcher is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric stretcher vehicles, in particular to an electric stretcher vehicle. Background Art

[0002] Electric stretcher trolleys and other stretcher trolleys are common medical rescue tools, which usually include a frame and a stretcher mounted on the frame, and the stretcher is used to carry the wounded. At present, the stretcher of the electric stretcher trolley is often fixed on the frame, so that the stretcher can only be mounted horizontally on the frame, which limits the use of the stretcher. For example, in some cases, the wounded cannot lie flat on the stretcher and need to lean on it for transportation. Utility Model Content

[0003] The problem solved by the utility model is how to improve the use flexibility of the electric stretcher.

[0004] To solve the above problems, on the one hand, the utility model provides an electric stretcher vehicle, comprising a gas spring, a handle, a back plate and a frame, one end of the back plate is rotatably connected to the frame, the handle is located below the back plate and is rotatably connected to the other end of the back plate, the gas spring is located below the back plate, and the cylinder of the gas spring is hinged to the frame, the telescopic rod of the gas spring is connected to the back plate, and the switch of the gas spring on the telescopic rod is located on the rotation path of the handle, so that the switch can be pressed by rotating the handle to adjust the telescopic length of the gas spring.

[0005] Optionally, the electric stretcher further comprises a handle limit frame, which is fixed to the bottom of the back plate and is provided with a limit hole, and the handle passes through the limit hole to be rotatably connected to the back plate.

[0006] Optionally, a middle portion of the connecting portion is rotatably connected to the back plate, and an end of the connecting portion away from the grasping portion is used to press the switch.

[0007] Optionally, the connecting part includes a rod body rotatably connected to the back plate and a limiting barrel connected to the rod body, the barrel mouth of the limiting barrel is set toward the switch, and the switch is located on the rotation path of the barrel mouth so as to enter the barrel mouth through the rotation of the rod body and abut against the inner wall of the limiting barrel.

[0008] Optionally, the grasping portion is bent in a direction away from the back plate.

[0009] Optionally, an anti-slip structure is provided at one end of the gripping portion away from the back plate.

[0010] Optionally, the electric stretcher further comprises a leg board, one end of which is rotatably connected to the frame, and the other end of which is connected to the frame via a telescopic locking structure.

[0011] Optionally, the backplane includes a backplane frame and a backplane body, the backplane frame is rotatably connected to the frame, the backplane body is connected to the backplane frame, and a notch is provided at one end of the backplane body away from the rotation axis of the backplane frame so that the backplane frame can be grasped through the notch.

[0012] Optionally, a back plate hollow hole is provided on the back plate body.

[0013] Optionally, the leg plate is provided with a leg plate hollow hole.

[0014] Compared with the prior art, the electric stretcher trolley of the utility model is provided with a back plate rotatably connected to the frame. The switch of the gas spring is located on the rotation path of the handle and connected to the back plate, so that the rotation of the handle below the back plate can be converted into pressure on the switch, so as to trigger the gas spring by the pressure of the handle on the switch, and then adjust the telescopic length of the gas spring. Since one end of the gas spring is rotatably connected to the frame and the other end is connected to the back plate, the telescopic length of the gas spring can be adapted to the rotation angle of the back plate, so that the back plate can be rotated to any angle relative to the frame under the support of the gas spring. In this way, after rotating the handle, the back plate can be rotated relative to the frame, and the back plate can be supported by the gas spring to maintain the inclination angle of the back plate after rotation, thereby improving the flexibility of use of the back plate, and then improving the flexibility of use of the electric stretcher trolley. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an electric stretcher in an embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the handle driving the gas spring to extend and retract in the embodiment of the utility model;

[0017] Figure 3 It is a schematic structural diagram of the leg plate in the embodiment of the utility model.

[0018] Description of reference numerals:

[0019] 1-gas spring; 11-switch; 2-handle; 21-grip; 22-connecting part; 23-rod body; 24-limiting barrel; 3-back plate; 31-back plate frame; 32-back plate body; 321-back plate hollow hole; 4-frame; 5-handle limiting frame; 6-leg plate; 61-leg plate hollow hole; 7-telescopic locking structure; 71-connecting frame; 72-armrest. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0021] In the accompanying drawings, the Z axis represents the vertical direction, that is, the up and down position, and the positive direction of the Z axis (that is, the direction of the arrow of the Z axis) represents the top, and the negative direction of the Z axis (that is, the direction opposite to the positive direction of the Z axis) represents the bottom; the X axis in the accompanying drawings represents the horizontal position, and the positive direction of the X axis (that is, the direction of the arrow of the X axis) represents the right side, and the negative direction of the X axis (that is, the direction opposite to the positive direction of the X axis) represents the left side; the Y axis in the accompanying drawings represents the front and back position, and the positive direction of the Y axis (that is, the direction of the arrow of the Y axis) represents the front side, and the negative direction of the Y axis (that is, the direction opposite to the positive direction of the Y axis) represents the back side. It should also be noted that the aforementioned Z axis, X axis and Y axis are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the utility model.

[0022] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data in this way can be interchanged under appropriate circumstances, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0023] Combination Figure 1 to Figure 2 As shown, the utility model provides an electric stretcher vehicle, comprising a gas spring 1, a handle 2, a back plate 3 and a frame 4, one end of the back plate 3 is rotatably connected to the frame 4, the handle 2 is located below the back plate 3 and is rotatably connected to the other end of the back plate 3, the gas spring 1 is located below the back plate 3, and the cylinder body of the gas spring 1 is hinged to the frame 4, the telescopic rod of the gas spring 1 is connected to the back plate 3, and the switch 11 of the gas spring 1 on the telescopic rod is located on the rotation path of the handle 2, so that the switch 11 can be pressed by the rotation of the handle 2 to adjust the telescopic length of the gas spring 1.

[0024] Specifically, the end of the back plate 3 facing the negative direction of the Y axis, i.e., the rear end, is rotatably connected to the frame 4 via a pin, and the handle 2 is located below the back plate 3. The middle position of the handle 2 is rotatably connected to the end of the back plate 3 facing the positive direction of the Y axis, i.e., the front end, via a pin, and the front end of the handle 2 can be used for grasping. The gas spring 1 is located below the back plate 3, and the cylinder of the gas spring 1 is hinged to the frame 4. The telescopic rod of the gas spring 1 is connected to the back plate 3, and the switch 11 of the gas spring 1 on the telescopic rod is located on the rotation path of the handle 2. Taking the rear end of the handle 2 pressing against the switch 11 as an example, the switch 11 of the gas spring 1 is located on the rotation path of the rear end of the handle 2. When adjusting the back plate 3, hold the front end of the back plate 3 and apply an upward force to the front end of the back plate 3. At the same time, manually drive the front end of the handle 2 to rotate toward the back plate 3 to drive the rear end of the handle 2 to rotate away from the back plate 3. When the rear end of the handle 2 presses against the switch 11, the gas spring 1 is triggered and keeps the rear end of the handle 2 pressing against the switch 1. The length of the gas spring 1 can be adjusted with the change of the rotation angle of the back plate 3, that is, the larger the angle between the back plate 3 and the frame 4, the greater the elongation of the gas spring 1. After the back plate 3 is adjusted to a suitable position, the rear end of the handle 2 is manually driven to rotate toward the back plate 3 to cancel the pressure of the rear end of the handle 2 on the switch 11, so that the gas spring 1 maintains the current elongation, so as to support the back plate 3 through the connection between the gas spring 1 and the back plate 3.

[0025] Therefore, in the present embodiment, a back plate 3 is provided which is rotatably connected to the frame 4, and extends to the rotation path of the handle 2 through the switch 11 of the gas spring 1 and is connected to the back plate 3, so that the rotation of the handle 2 below the back plate 3 can be converted into pressure on the switch 11, so that the gas spring 1 is triggered by the pressure of the handle 2 on the switch 11, and then the telescopic length of the gas spring 1 is adjusted. Since one end of the gas spring 1 is rotatably connected to the frame 4 and the other end is connected to the back plate 3, the telescopic length of the gas spring 1 can be adapted to the rotation angle of the back plate 3, so that the back plate 3 can be rotated to any angle relative to the frame 4 under the support of the gas spring 1. In this way, after rotating the handle 2, the rotation of the back plate 3 relative to the frame 4 can be realized, and the back plate can be supported by the gas spring 1 to maintain the inclination angle after the back plate is rotated, thereby improving the flexibility of use of the back plate 3, and then improving the flexibility of use of the electric stretcher.

[0026] Optionally, combined Figure 1 As shown, the electric stretcher also includes a handle limit frame 5, which is fixed to the bottom of the back plate 3 and is provided with a limit hole, and the handle 2 passes through the limit hole and is rotatably connected to the back plate 3.

[0027] Specifically, the handle limit frame 5 is fixed to the bottom of the back plate 3 by screws, and a limit hole is arranged on the handle limit frame 5. The handle 2 passes through the limit hole and is rotatably connected to the back plate 3 so as to rotate in the limit hole.

[0028] In this way, the handle limit frame 5 is fixed to the bottom of the back plate 3, and a limit hole is set, and the handle 2 is rotatably connected to the back plate 3 through the limit hole, so that the handle 2 can only rotate within the space surrounded by the limit hole, thereby avoiding the situation where the handle 2 cannot effectively press the switch 11 due to the large rotation range, thereby improving the reliability of the handle 2.

[0029] Optionally, combined Figure 1 and Figure 2 As shown, the handle 2 includes a grip portion 21 extending along the width direction of the frame 4 and a connecting portion 22 vertically connected to the middle portion of the grip portion 21 , the middle portion of the connecting portion 22 is rotatably connected to the back plate 3 , and one end of the connecting portion 22 away from the grip portion 21 is used to press the switch 11 .

[0030] Specifically, the length direction of the gripping portion 21 is consistent with the width direction of the frame 4, one end of the connecting portion 22 is vertically connected to the middle of the gripping portion 21, the middle of the connecting portion 22 is rotatably connected to the back plate 3 through a pin, and the other end of the connecting portion 22 is used to press the switch 11 of the gas spring 1, that is, the connecting portion 22 and the gripping portion 21 are in a T-shaped structure as a whole. When in use, the thumbs of both hands hook the edge of the back plate 3, and the remaining four fingers of both hands hook the gripping portion 21 respectively, and then the hands are kneaded to apply an upward circumferential force to the connecting portion 22 toward one end of the gripping portion 21 through the gripping portion 21, and through the lever principle formed by the rotational connection between the connecting portion 22 and the back plate 3, the connecting portion 22 is rotated downward toward one end of the back plate 3, thereby pressing the switch 11 of the gas spring 1, so as to adjust the telescopic length of the solid gas spring 1.

[0031] In this way, through the grip portion 21 extending along the width direction of the frame 4 and the connecting portion 22 vertically connected to the middle portion of the grip portion 21, the middle portion of the connecting portion 22 is rotatably connected to the back panel 3, and the end of the connecting portion 22 away from the grip portion 21 is used to press the switch 11. In this way, in the width direction of the frame 4, the grip portion 21 provides a gripping position for the connecting portion 22, so as to facilitate the hand to grip the connecting portion 22, thereby facilitating improving the user experience of the connecting portion 22.

[0032] Optionally, combined Figure 1 and Figure 2 As shown, the connecting portion 22 includes a rod body 23 rotatably connected to the back plate 3 and a limiting barrel 24 connected to the rod body 23. The barrel mouth of the limiting barrel 24 is set toward the switch 11. The switch 11 is located on the rotation path of the barrel mouth so as to enter the barrel mouth through the rotation of the rod body 23 and abut against the inner wall of the limiting barrel 24.

[0033] Specifically, the rod body 23 is vertically connected to the gripping portion 21 and is rotatably connected to the back plate 3. The limit barrel 24 can be installed on the end of the cylinder body 23 facing the back plate 3 by welding, and the barrel mouth of the limit barrel 24 faces the switch 11. When the rod body 23 rotates, the barrel mouth of the limit barrel 24 faces the switch 11, and when it rotates to the switch 11, since the switch 11 is located on the rotation path of the barrel mouth, the switch 11 can enter the limit barrel 24 through the barrel mouth and resist against the inner wall of the limit barrel 24. As the limit barrel 24 continues to rotate, the inner wall of the limit barrel 24 presses the switch 11 to achieve the adjustment of the telescopic length of the gas spring 1.

[0034] In this way, the barrel mouth of the limit barrel 24 connected to the rod body 23 is set toward the switch 11, and the switch 11 is located on the rotation path of the barrel mouth, so that it can enter the barrel mouth through the rotation of the rod body 23 and abut against the inner wall of the limit barrel 24. The barrel mouth of the limit barrel 24 guides the switch 11. In this way, in the process of the limit barrel 24 rotating toward the switch 11, the barrel mouth of the limit barrel 24 improves the accuracy of the limit barrel 24 pressing the switch 11, so that the inner wall of the limit barrel 24 presses the switch 11, so as to accurately trigger the gas spring 1, thereby improving the user experience of the handle 2.

[0035] Optionally, combined Figure 1 and Figure 2 As shown, the gripping portion 21 is bent in a direction away from the back plate 3 .

[0036] Specifically, when the back plate 3 is in a horizontal state, the grip portion 21 is bent in a direction away from the back plate 3, that is, the grip portion 21 is bent in the negative direction of the Z axis. In this way, by bending the grip portion 21 in a direction away from the back plate 3, the distance between the grip portion 21 and the back plate 3 is increased, so that the space between the grip portion 21 and the back plate 3 is increased, and the collision between the hand and the back plate 3 is avoided, so that the hand can be inserted between the grip portion 21 and the back plate 3 to hold the grip portion 21, thereby improving the use experience of the grip portion 21.

[0037] Optionally, an anti-slip structure is provided at one end of the gripping portion 21 away from the back plate 3 .

[0038] Specifically, the anti-skid structure can be a plurality of parallel groove structures, rubber and other anti-skid structures. The anti-skid structure is located at the end of the grip portion 21 away from the back plate 3. In this way, by arranging the anti-skid structure at the end of the grip portion 21 away from the back plate 3, the anti-skid structure increases the contact roughness between the palm and the grip portion 21, so that when grasping, the palm and the grip portion 21 are prevented from slipping, thereby improving the stability of grasping.

[0039] Optionally, combined Figure 1 and Figure 3 As shown, the electric stretcher vehicle further comprises a leg plate 6 , one end of which is rotatably connected to the vehicle frame 4 , and the other end of which is connected to the vehicle frame 4 via a telescopic locking structure 7 .

[0040] Specifically, the front end of the leg plate 6 is rotatably connected to the frame 4 through a pin shaft, and the rear end of the leg plate 6 is connected to the frame 4 through a telescopic locking structure 7. When the leg plate 6 is lifted, the telescopic locking structure 7 can be extended to a required length so that the leg plate 6 forms a fixed angle with the top of the frame 4, wherein the telescopic locking structure 7 can be a structure such as a cylinder.

[0041] In this way, one end of the leg board 6 is rotatably connected to the frame 4 , and the other end is connected to the frame 4 via the telescopic locking structure 7 , so that the leg board 6 can rotate relative to the frame 4 , thereby improving the use flexibility of the leg board 6 .

[0042] Furthermore, the telescopic locking structure 7 includes a connecting frame 71 and an armrest 72. The connecting frame 71 is an overall herringbone structure. The two branches of the connecting frame 71 are rotatably connected to the frame 4 through pins. The main body of the connecting frame 71 is slidably connected to the armrest 72. The armrest 72 is connected to the leg board 6, and in the sliding direction of the main body of the connecting frame 71 and the armrest 72, a slide groove is provided on the connecting frame 71, and a plurality of latch teeth are provided in the extending direction of the slide groove. The armrest 72 slides to any latch tooth through the pin shaft and is engaged with the corresponding latch tooth to fix the angle of the leg board 6, thereby helping to reduce the cost of fixing the angle of the leg board 6.

[0043] Optionally, combined Figure 1 and Figure 3 As shown, the backboard 3 includes a backboard frame 31 and a backboard body 32. The backboard frame 31 is rotatably connected to the frame 4, and the backboard body 32 is connected to the backboard frame 31. A notch is provided at one end of the backboard body 32 away from the rotation axis of the backboard frame 31 so that the backboard frame 31 can be grasped through the notch.

[0044] Specifically, the backboard frame 31 includes two parallel rods and a connecting rod connected to the same end of the two rods, that is, the backboard frame 31 is a U-shaped structure as a whole. The open end of the backboard frame 31, that is, the end of the two parallel rods facing the negative direction of the Y-axis is rotatably connected to the frame 4. The backboard body 32 is connected to the backboard frame 31 by screws, and a notch is provided at the end of the backboard body 32 away from the rotation axis of the backboard frame 31. There are two notches, and the two notches are respectively arranged close to the two rods. The notch enables a gap to be left between the backboard body 32 and the backboard frame 31 so that the hand can pass through the notch to grasp the backboard frame 31.

[0045] In this way, a notch is set at one end of the back panel body 32 connected to the back panel frame 31 away from the rotation axis of the back panel frame 31, so that a space is left between the back panel body 32 and the back panel frame 31, and then the back panel frame 31 is rotatably connected to the frame 4. In this way, the medical staff can directly hold the back panel frame 31 through the notch to facilitate the rotation of the back panel 3.

[0046] Optionally, combined Figure 1 As shown, a back plate hollow hole 321 is provided on the back plate body 32 .

[0047] Specifically, a plurality of back plate hollow holes 321 are provided, and the plurality of back plate hollow holes 321 are distributed on the back plate body 32. In this way, the back plate hollow holes 321 realize a lightweight design of the back plate hollow holes 321 to reduce the weight of the electric stretcher trolley, thereby facilitating the use of the electric stretcher trolley.

[0048] Optionally, combined Figure 1 As shown, the leg plate 6 is provided with a leg plate hollow hole 61.

[0049] Specifically, a plurality of leg plate hollow holes 61 are provided, and the plurality of leg plate hollow holes 61 are distributed on the leg plate 6. In this way, the leg plate hollow holes 61 realize the lightweight design of the leg plate 6 to reduce the weight of the electric stretcher trolley, thereby facilitating the use of the electric stretcher trolley.

[0050] Another embodiment of the utility model further provides an electric stretcher trolley, comprising the above electric stretcher trolley.

[0051] The advantages of this electric stretcher trolley are the same as those of the electric stretcher trolley over the prior art, which will not be described in detail here.

[0052] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. An electric stretcher, characterized in that: The invention comprises a gas spring (1), a handle (2), a back plate (3) and a frame (4); one end of the back plate (3) is rotatably connected to the frame (4); the handle (2) is located below the back plate (3) and is rotatably connected to the other end of the back plate (3); the gas spring (1) is located below the back plate (3); the cylinder of the gas spring (1) is hinged to the frame (4); the telescopic rod of the gas spring (1) is connected to the back plate (3); and the switch (11) of the gas spring (1) on the telescopic rod is located on the rotation path of the handle (2) so that the switch (11) can be pressed by the rotation of the handle (2) to adjust the telescopic length of the gas spring (1).

2. The electric stretcher according to claim 1, characterized in that: It also comprises a handle limit frame (5), which is fixed to the bottom of the back plate (3) and is provided with a limit hole, and the handle (2) passes through the limit hole to be rotatably connected to the back plate (3).

3. The electric stretcher according to claim 1, characterized in that: The handle (2) comprises a gripping portion (21) extending in the width direction of the frame (4) and a connecting portion (22) vertically connected to the middle portion of the gripping portion (21); the middle portion of the connecting portion (22) is rotatably connected to the back plate (3); and an end of the connecting portion (22) away from the gripping portion (21) is used to press the switch (11).

4. The electric stretcher according to claim 3, characterized in that: The connecting portion (22) comprises a rod body (23) rotatably connected to the back plate (3) and a limiting barrel (24) connected to the rod body (23); the barrel mouth of the limiting barrel (24) is arranged toward the switch (11); the switch (11) is located on the rotation path of the barrel mouth so as to enter the barrel mouth through the rotation of the rod body (23) and abut against the inner wall of the limiting barrel (24).

5. The electric stretcher according to claim 3, characterized in that: The grasping portion (21) is bent in a direction away from the back plate (3).

6. The electric stretcher according to claim 3, characterized in that: An anti-slip structure is provided at one end of the gripping portion (21) away from the back plate (3).

7. The electric stretcher according to claim 1, characterized in that: It also comprises a leg plate (6), one end of which is rotatably connected to the frame (4), and the other end of which is connected to the frame (4) via a telescopic locking structure (7).

8. The electric stretcher according to claim 1, characterized in that: The backboard (3) comprises a backboard frame (31) and a backboard body (32); the backboard frame (31) is rotatably connected to the vehicle frame (4); the backboard body (32) is connected to the backboard frame (31); and a notch is provided at one end of the backboard body (32) away from the rotation axis of the backboard frame (31) so that the backboard frame (31) can be grasped through the notch.

9. The electric stretcher according to claim 8, characterized in that: The back plate body (32) is provided with a back plate hollow hole (321).

10. The electric stretcher according to claim 7, characterized in that: The leg plate (6) is provided with a leg plate hollow hole (61).

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