A backrest device for a shifting machine

Abstract

This utility model discloses a backrest device for a patient transfer machine. The backrest device includes: a backrest; an L-shaped bracket fixedly mounted on the backrest, with the backrest mounted on the frame of the transfer machine via the L-shaped bracket; and a fine-tuning component disposed on the L-shaped bracket and the frame, used to adjust the angle of the backrest. In use, the user sits on the transfer machine with their back against the backrest. Since the backrest is vertically mounted on the frame, and the user's back is vertically against it, if the user experiences discomfort from maintaining an upright posture for an extended period and wishes to adjust their back from vertical to tilted, the user simply tilts their back, causing the backrest to rotate accordingly. When the backrest returns to a vertical position, a torsion spring causes the backrest to return to its original position and contact the user's back. Therefore, the backrest of this application is quite flexible during use.

Description

Technical Field

[0001] This utility model belongs to the field of shifting machine technology, specifically relating to a backstop device for a shifting machine. Background Technology

[0002] In the existing technology, the backrest of the transfer machine is vertically installed on the frame of the transfer machine and is fixedly installed on the frame. This causes the backrest to always be in a vertical state. Since the backrest is always in a vertical state, it cannot be adjusted when the user wants to get close to the backrest to adjust the angle, and it cannot be used flexibly. Summary of the Invention

[0003] (1) Technical problems to be solved

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a backrest device for a shifting machine, which has the advantage that the backrest angle can be adjusted.

[0005] (2) Technical solution

[0006] To solve the above-mentioned technical problems, this utility model provides a backstop device for a shifting machine, which includes:

[0007] Backrest;

[0008] The L-shaped bracket is fixedly installed on the backrest, and the backrest is installed on the frame of the transfer machine via the L-shaped bracket;

[0009] A fine-tuning component is disposed on an L-shaped bracket and frame, and the fine-tuning component is used to adjust the angle of the backrest.

[0010] Preferably, the fine-tuning component includes a connecting rod fixedly connected to the middle position of the lower surface of the L-shaped bracket at the end away from the backrest, and a groove on the frame for the connecting rod to rotate.

[0011] Furthermore, the fine-tuning component also includes a rotating shaft fixedly connected to the end of the connecting rod away from the L-shaped bracket, with both ends of the rotating shaft rotatably connected to the frame.

[0012] Furthermore, a torsion spring is fitted onto the rotating shaft.

[0013] Furthermore, one of the pins of the torsion spring is mounted on the lower fixed shaft, and the two ends of the lower fixed shaft are respectively fixedly connected to the inner wall of the front side and the inner wall of the rear side of the frame.

[0014] Furthermore, another pin of the torsion spring is mounted on the upper fixed shaft, one end of which is fixedly connected to the connecting rod, and the other end of which has a gap with the inner wall of the frame.

[0015] Furthermore, a gap is left between the lower fixed shaft and the bottom end of the connecting rod.

[0016] Furthermore, a handle is fixedly installed on the backrest above the L-shaped bracket. Beneficial effects

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] When using this invention, the user sits on the transfer machine with their back against the backrest. Since the backrest is vertically mounted on the frame, the user's back is also vertically against it. When the user feels uncomfortable maintaining an upright sitting posture for a long time and wants to adjust their back posture to a tilted position, the user can simply tilt their back, causing the backrest to rotate with their back. When the backrest changes from a tilted to an upright position, the torsion spring causes the backrest to return to its original position and contact the user's back. Therefore, the backrest of this invention is quite flexible during use. Attached Figure Description

[0019] Figure 1 This is a front view schematic diagram of the back-mounted device used in existing shifting machines.

[0020] Figure 2 This is a front view schematic diagram of this utility model.

[0021] Figure 3 This is a schematic diagram of the fine-tuning component of this utility model.

[0022] Figure 4 This is a schematic diagram of the assembly structure of the backrest and frame of this utility model.

[0023] Figure 5 This is a partial structural schematic diagram of the present invention.

[0024] The labels in the attached diagram are: 1. Backrest; 2. L-shaped bracket; 3. Fine-tuning component; 4. Frame; 5. Handle; 31. Connecting rod; 32. Groove; 33. Rotating shaft; 34. Torsion spring; 35. Lower fixed shaft; 36. Upper fixed shaft. Detailed Implementation

[0025] This specific embodiment is a backstop device for a shifting machine, and its structural schematic diagram is shown below. Figures 1-5 As shown, the backstop device used in this shifting machine includes:

[0026] Backrest 1, which can support the back of the user sitting on the transfer machine;

[0027] L-shaped bracket 2 is fixedly installed on backrest 1. Backrest 1 is installed on frame 4 of the transfer machine via L-shaped bracket 2. There is a gap between the end of L-shaped bracket 2 away from backrest 1 and frame 4. By setting this gap, when the user's back tilts backward, it can drive backrest 1 to tilt and rotate synchronously with the user's back. Therefore, by setting the gap, a space for rotation is left for L-shaped bracket 2, so that the rotation of the backrest can be realized.

[0028] Fine-tuning component 3 is set on L-shaped bracket 2 and frame 4. Fine-tuning component 3 is used to adjust the angle of backrest 1. By setting fine-tuning component 3, the angle of backrest 1 can be adjusted, so that backrest 1 can be used flexibly.

[0029] The user sits on the motion shifter with their back against the backrest 1. Since the backrest 1 is vertically mounted on the frame 4, the user's back is also vertically against the backrest 1. When the user feels uncomfortable from maintaining a vertical sitting posture for a long time and wants to adjust their back posture to change from a vertical to a tilted position, the backrest 1 moves synchronously with the backrest from a vertical to a tilted position during the tilting process. The backrest 1 changes from a vertical to a tilted position through the fine-tuning component 3, thereby completing the adjustment of the backrest 1 angle so that the user's back is at a suitable angle.

[0030] The fine-tuning component 3 includes a connecting rod 31 fixedly connected to the middle position of the lower surface of the L-shaped bracket 2 away from the backrest 1, and a groove 32 opened on the frame 4 for the connecting rod 31 to rotate. The inner wall of the back of the groove 32 is a vertical surface, and the inner wall of the front of the groove 32 is an inclined surface. The end of the connecting rod 31 away from the backrest 1 extends into the interior of the groove 32. When the backrest 1 is in a vertical state, the connecting rod 31 contacts the inner wall of the back of the groove 32, and the connecting rod 31 rotates to the inner wall of the front of the groove 32 at its maximum.

[0031] The fine-tuning component 3 also includes a rotating shaft 33 fixedly connected to the end of the connecting rod 31 away from the L-shaped bracket 2. Both ends of the rotating shaft 33 are rotatably connected to the frame 4. A torsion spring 34 is sleeved on the rotating shaft 33. One of the pins of the torsion spring 34 is installed on the lower fixed shaft 35. Both ends of the lower fixed shaft 35 are fixedly connected to the inner wall of the front side and the inner wall of the rear side of the frame 4, respectively. The other pin of the torsion spring 34 is installed on the upper fixed shaft 36. One end of the upper fixed shaft 36 is fixedly connected to the connecting rod 31. A gap is left between the other end of the upper fixed shaft 36 and the inner wall of the frame 4.

[0032] When a user sits on the motion transfer machine, their back rests against the backrest 1. Since the backrest 1 is vertically mounted on the frame 4, the user's back is also vertically resting against the backrest 1. When the user feels uncomfortable from maintaining a vertical sitting posture for a long time and wants to adjust their back posture to change from a vertical to a tilted position, the backrest 1 moves synchronously with the backrest from a vertical position to a tilted position during the tilting process. The backrest 1 drives the L-shaped bracket 2 to rotate synchronously, and the L-shaped bracket 2 drives the connecting rod 31 to rotate inside the groove 32. The backrest 1 changes from a vertical position to a tilted position through the rotation of the L-shaped bracket 2 and the connecting rod 31, thereby completing the adjustment of the backrest 1 angle so that the user's back is at a suitable angle.

[0033] Meanwhile, during the rotation of the connecting rod 31, the upper fixed shaft 36 can be driven to rotate synchronously. During the rotation of the upper fixed shaft 36, the torsion spring 34 is stretched through another pin of the torsion spring 34. When the user's back changes from a tilted state to a vertical state, the user's back no longer exerts a pushing force on the backrest 1, and the torsion spring 34 is no longer stretched. Under the action of the torsion spring 34, the connecting rod 31 slowly rotates and resets with the user's back. The connecting rod 31 drives the L-shaped bracket 2 and the backrest 1 to slowly rotate and reset to a vertical state with the user's back. Therefore, under the action of the torsion spring 34, the backrest 1 can be reset without manual reset, which is convenient to use.

[0034] A gap is left between the lower fixed shaft 35 and the bottom end of the connecting rod 31. By setting this gap, the connecting rod 31 will not come into contact with the lower fixed shaft 35 when it rotates, thus satisfying the rotation of the connecting rod 31.

[0035] A handle 5 is fixedly installed on the backrest 1 and above the L-shaped bracket 2. By holding the handle 5, the backrest 1 can be rotated in the horizontal direction, which can drive the L-shaped bracket 2 and the frame 4 to rotate open or close.

[0036] In summary, when using this utility model, the user sits on the transfer machine with their back against the backrest 1. Since the backrest 1 is vertically mounted on the frame 4, the user's back is also vertically against the backrest 1. When the user feels uncomfortable maintaining a vertical sitting posture for a long time and wants to adjust their back posture to change from a vertical to a tilted state, the user can simply tilt their back to make the backrest 1 rotate with the user's back. When the back changes from a tilted to a vertical state, the torsion spring 34 causes the backrest 1 to return to its original position and contact the user's back. Therefore, the backrest 1 of this application is relatively flexible during use.

[0037] All technical features in this embodiment can be freely combined according to actual needs.

[0038] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A backstop device for a shifting machine, characterized in that: The backstop device used in this shifting machine includes: Backrest (1); L-shaped bracket (2), the L-shaped bracket (2) is fixedly installed on the backrest (1), and the backrest (1) is installed on the frame (4) of the transfer machine through the L-shaped bracket (2); A fine-tuning component (3) is disposed on an L-shaped bracket (2) and a frame (4) for adjusting the angle of the backrest (1).

2. The backstop device for a shifting machine according to claim 1, characterized in that, The fine-tuning component (3) includes a connecting rod (31) fixedly connected to the middle position of the lower surface of the L-shaped bracket (2) away from the backrest (1) and a groove (32) opened on the frame (4) for the connecting rod (31) to rotate.

3. The backstop device for a shifting machine according to claim 1, characterized in that, The fine-tuning component (3) also includes a rotating shaft (33) fixedly connected to the end of the connecting rod (31) away from the L-shaped bracket (2), and the two ends of the rotating shaft (33) are rotatably connected to the frame (4).

4. The backstop device for a shifting machine according to claim 3, characterized in that, A torsion spring (34) is fitted onto the rotating shaft (33).

5. The backstop device for a shifting machine according to claim 4, characterized in that, One of the pins of the torsion spring (34) is mounted on the lower fixed shaft (35), and the two ends of the lower fixed shaft (35) are fixedly connected to the front inner wall and the rear inner wall of the frame (4), respectively.

6. The backstop device for a shifting machine according to claim 5, characterized in that, The other pin of the torsion spring (34) is mounted on the upper fixed shaft (36). One end of the upper fixed shaft (36) is fixedly connected to the connecting rod (31), and the other end of the upper fixed shaft (36) has a gap between it and the inner wall of the frame (4).

7. The backstop device for a shifting machine according to claim 5, characterized in that, A gap is left between the lower fixed shaft (35) and the bottom end of the connecting rod (31).

8. The backstop device for a shifting machine according to claim 1, characterized in that, A handle (5) is fixedly installed on the backrest (1) and above the L-shaped bracket (2).

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