Fixing device for preventing pipeline from moving

By setting up structures such as T-shaped blocks, fixed blocks, T-shaped grooves and rotating rods in the blood purification infusion tube fixing device, the left and right movement of the lifting support rod is solved, and the problem that existing devices can only fix the left-hand infusion tube, improving the fixing ability of the left-hand infusion tube and the practicality of the device.

CN120154799APending Publication Date: 2025-06-17崔青松
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202510451949.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-04-11
Publication Date
2025-06-17

AI Technical Summary

Technical Problem

The lifting support rod of the existing blood purification infusion tube fixing device cannot move left and right, resulting in the limiting squeeze structure that can only facilitate the fixing of the left-hand infusion tube, reducing the practicality of the device.

Method used

By providing a T-shaped block and a fixing block on the outside of the fixing cylinder, and a T-shaped groove and a rotating rod are provided on the rear end surface of the auxiliary seat, and combining the adjustment rod and the rotating disk, the left and right movement of the lifting support rod is realized, so that the limit extrusion structure can facilitate the fixation of the left and right hand infusion tubes.

Benefits of technology

It effectively improves the fixing ability of the fixing device to the left and right hand infusion tubes, and enhances the practicality and flexibility of the device.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN120154799A_ABST
    Figure CN120154799A_ABST
Patent Text Reader

Abstract

The invention relates to the technical field of blood purification, in particular to a fixing device for preventing a pipeline from moving, which comprises a limiting extrusion structure, a lifting support rod, a fixing cylinder and an auxiliary seat, the limiting extrusion structure comprises an arc-shaped plate, an extrusion spring, a moving rod and a mounting frame, a T-shaped block and a fixing block are arranged on the outer side of the fixing cylinder, and a threaded groove is formed in the fixing block; an adjusting rod is arranged in the fixing cylinder, a T-shaped groove is formed in the rear end face of the auxiliary seat, two supporting blocks are arranged on the rear end face of the auxiliary seat, a rotating rod is arranged between the two supporting blocks, threads are arranged on the rotating rod, an arc-shaped groove is formed in the inner bottom of the mounting frame, and the fixing cylinder and the auxiliary seat are arranged to be in sliding connection through the T-shaped block. And through cooperation of a rotating rod and a fixing block, a lifting supporting rod can conveniently move left and right, so that a limiting extrusion structure can conveniently fix an infusion tube for left and right hand infusion, and the practicability of the device is effectively improved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention relates to the technical field of blood purification, and particularly to a fixing device for preventing pipeline movement. Background Art

[0002] The blood purification infusion tube is mainly used to connect the replacement fluid bag and the infusion pipeline of the blood purification machine, and is mainly applied to dialysis medical technology. The overall design of the existing blood purification infusion tube for controlling the infusion flow rate still has deficiencies, which is not conducive to regulation operations and is not convenient for medical staff to operate. Young patients are prone to displacement of the infusion tube due to shaking, and at the same time, the infusion tube is prone to shaking due to being touched by outsiders during operation. In view of this, in-depth research on the above problems has led to the generation of this case.

[0003] The prior art patent CN115089789A discloses a fixing device for preventing pipeline movement in blood purification nursing, including: an auxiliary seat and a pair of concave arm limit blocks. The pair of concave arm limit blocks are installed on both sides of the auxiliary seat. A pipeline limit structure is installed on the auxiliary seat, and an arm limit structure is installed on the pair of concave arm limit blocks. The beneficial effect of this prior art is that the arm limit structure is used to lift and squeeze and limit the patient's arm, and at the same time, the pipeline limit structure is used to adjust the height of the infusion tube, so as to change the flow rate inside the infusion tube. Then, the limit extrusion structure is used to stably and flexibly stretch and limit the infusion tube, avoiding damage to the user caused by shaking of the infusion tube.

[0004] However, in the aforementioned prior art, since the lifting support rod cannot move left and right, the upper limit extrusion structure is only convenient for fixing the infusion tube for left-handed infusion, thereby reducing the practicality of the device. Summary of the Invention

[0005] The purpose of the present invention is to provide a fixing device for preventing pipeline movement, and solve the technical problem that in the prior art, since the lifting support rod cannot move left and right, the upper limit extrusion structure is only convenient for fixing the infusion tube for left-handed infusion, thereby reducing the practicality of the device.

[0006] To achieve the above object, the present invention provides a fixing device for preventing pipeline movement, including a limit extrusion structure, a lifting support rod, a fixing cylinder and an auxiliary seat. The limit extrusion structure includes an arc plate, a compression spring, a moving rod and an installation frame. The outer side of the fixing cylinder is provided with a T-shaped block and a fixing block, and the fixing block has a threaded groove inside. An adjusting rod is arranged inside the fixing cylinder. The rear end face of the auxiliary seat has a T-shaped groove, and two support blocks are arranged on the rear end face of the auxiliary seat. A rotating rod is arranged between the two support blocks, and the rotating rod has threads. The inner bottom of the installation frame has an arc groove. The arc plate is slidably connected to the installation frame, located inside the installation frame, and covers the upper part of the arc groove. The arc plate is also fixedly connected to the moving rod and located at one end of the moving rod. The compression spring is sleeved on the moving rod and abuts between the arc plate and the installation frame. The moving rod is slidably connected to the installation frame and penetrates through the upper part of the installation frame. The installation frame is fixedly connected to the lifting support rod and located above the lifting support rod. The lifting support rod is slidably connected to the fixing cylinder and located inside the fixing cylinder. The lifting support rod is also threadedly connected to the adjusting rod and sleeved on the adjusting rod. The T-shaped block is slidably connected to the auxiliary seat and located in the T-shaped groove. The fixing block is threadedly connected to the rotating rod and sleeved on the rotating rod.

[0007] Wherein, a stabilizing rod is further arranged on the outer side of the fixing cylinder, and the rear end face of the auxiliary seat further has a positioning groove. The stabilizing rod is slidably connected to the auxiliary seat and located in the positioning groove.

[0008] Wherein, rotating disks are arranged at one ends of the adjusting rod and the rotating rod respectively.

[0009] Wherein, the fixing device for preventing pipeline movement further includes a foot pedal, a soft pad and a headrest. The foot pedal is fixedly connected to the auxiliary seat and located at the lower end of the auxiliary seat. The soft pad is fixedly connected to the auxiliary seat and located on the upper end face of the auxiliary seat. The headrest is fixedly connected to the auxiliary seat and located above the auxiliary seat.

[0010] Wherein, the fixing device for preventing pipeline movement further includes a plurality of support mechanisms, and the plurality of support mechanisms are respectively fixedly connected to the auxiliary seat and located below the auxiliary seat.

[0011] Wherein, the support mechanism includes a connecting rod, a support pad and a threaded sleeve. The connecting rod is fixedly connected to the support pad and located above the support pad. The connecting rod is also threadedly connected to the threaded sleeve and located inside the threaded sleeve. The threaded sleeve is fixedly connected to the auxiliary seat and located below the auxiliary seat.

[0012] Among them, a lumbar support is provided inside the auxiliary seat.

[0013] A fixing device for preventing pipeline movement according to the present invention includes a limiting and squeezing structure, a lifting support rod, a fixing cylinder and an auxiliary seat. The limiting and squeezing structure includes an arc-shaped plate, a squeezing spring, a moving rod and a mounting frame. A T-shaped block and a fixing block are provided on the outer side of the fixing cylinder. A threaded groove is provided inside the fixing block. An adjusting rod is provided inside the fixing cylinder. A T-shaped groove is provided on the rear end face of the auxiliary seat. Two support blocks are provided on the rear end face of the auxiliary seat. A rotating rod is provided between the two support blocks. Threads are provided on the rotating rod. An arc-shaped groove is provided at the inner bottom of the mounting frame. The arc-shaped plate is slidably connected to the mounting frame. The arc-shaped plate is also fixedly connected to the moving rod. The squeezing spring is sleeved on the moving rod. The moving rod is slidably connected to the mounting frame. The mounting frame is fixedly connected to the lifting support rod. The lifting support rod is slidably connected to the fixing cylinder. The lifting support rod is also threadedly connected to the adjusting rod. The T-shaped block is slidably connected to the auxiliary seat. The fixing block is threadedly connected to the rotating rod. The fixing cylinder and the auxiliary seat are arranged to be slidably connected through the T-shaped block. Then, through the cooperation of the rotating rod and the fixing block, the lifting support rod can be conveniently moved left and right, so that the limiting and squeezing structure can conveniently fix the infusion tubes for left and right hand infusions, thereby effectively improving the practicability of the device. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art.

[0015] Figure 1 It is the rear view of the first embodiment of the present invention.

[0016] Figure 2 It is the Figure 1 Partial enlarged view of part A in the present invention.

[0017] Figure 3 It is the Figure 1 Cross-sectional view taken along line B-B in the present invention.

[0018] Figure 4 It is the Figure 3 Partial enlarged view of part C in the present invention.

[0019] Figure 5 It is the front view of the second embodiment of the present invention.

[0020] Figure 6 It is the three-dimensional perspective view of the third embodiment of the present invention.

[0021] Figure 7 It is the front view of the third embodiment of the present invention.

[0022] Figure 8 It is of the present invention Figure 7 The sectional view taken along line D-D.

[0023] Figure 9 It is of the present invention Figure 8 The enlarged partial view at position E.

[0024] 101 - Lifting support rod, 102 - Fixed cylinder, 103 - Auxiliary seat, 104 - Arc plate, 105 - Extrusion spring, 106 - Moving rod, 107 - Mounting frame, 108 - T-shaped block, 109 - Fixed block, 110 - Threaded groove, 111 - Adjusting rod, 112 - T-shaped groove, 113 - Support block, 114 - Rotating rod, 115 - Arc groove, 116 - Stabilizing rod, 117 - Positioning groove, 118 - Rotating disk, 201 - Pedal, 202 - Soft pad, 203 - Headrest, 204 - Connecting rod, 205 - Support pad, 206 - Threaded sleeve, 207 - Lumbar support, 301 - Screw rod, 302 - Arc-shaped limiting block, 303 - Semi-circular cover, 304 - Concave seat, 305 - Activity cavity, 306 - Limiting spring, 307 - Inserting rod, 308 - Fixed box, 309 - Limiting piece. Detailed implementation manners

[0025] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0026] First embodiment:

[0027] Please refer to Figures 1 to 4 , where Figure 1 is the rear view of the first embodiment of the present invention, Figure 2 is of the present invention Figure 1 The enlarged partial view at position A, Figure 3 is of the present invention Figure 1 The sectional view taken along line B-B, Figure 4 is of the present invention Figure 3 The enlarged partial view at position C.

[0028] The present invention provides a fixing device for preventing pipeline movement, including a limiting and extruding structure, a lifting support rod 101, a fixed cylinder 102 and an auxiliary seat 103. The limiting and extruding structure includes an arc plate 14, an extrusion spring 105, a moving rod 106 and a mounting frame 107.

[0029] For this specific embodiment, a T-shaped block 108 and a fixing block 109 are provided on the outer side of the fixing cylinder 102. A threaded groove 110 is provided in the fixing block 109. An adjusting rod 111 is provided in the fixing cylinder 102. A T-shaped groove 112 is provided on the rear end face of the auxiliary seat 103. Two supporting blocks 113 are provided on the rear end face of the auxiliary seat 103. A rotating rod 114 is provided between the two supporting blocks 113. Threads are provided on the rotating rod 114. An arc-shaped groove 115 is provided at the inner bottom of the mounting frame 107. The arc-shaped plate 14 is slidably connected to the mounting frame 107 and is located inside the mounting frame 107 and covers above the arc-shaped groove 115. The arc-shaped plate 14 is also fixedly connected to the moving rod 106 and is located at one end of the moving rod 106. The compression spring 105 is sleeved on the moving rod 106 and abuts between the arc-shaped plate 14 and the mounting frame 107. The moving rod 106 is slidably connected to the mounting frame 107 and penetrates above the mounting frame 107. The mounting frame 107 is fixedly connected to the lifting support rod 101 and is located above the lifting support rod 101. The lifting support rod 101 is slidably connected to the fixing cylinder 102 and is located inside the fixing cylinder 102. The lifting support rod 101 is also threadedly connected to the adjusting rod 111 and is sleeved on the adjusting rod 111. The T-shaped block 108 is slidably connected to the auxiliary seat 103 and is located in the T-shaped groove 112. The fixing block 109 is threadedly connected to the rotating rod 114 and is sleeved on the rotating rod 114. The fixing cylinder 102 and the auxiliary seat 103 are set to be slidably connected through the T-shaped block 108. Then, through the cooperation of the rotating rod 114 and the fixing block 109, the lifting support rod 101 can be conveniently moved left and right, so that the limiting and pressing structure can conveniently fix the infusion tubes for left and right hand infusions, thereby effectively improving the practicability of the device.

[0030] Wherein, a stabilizing rod 116 is further provided on the outer side of the fixing cylinder 102. A positioning groove 117 is further provided on the rear end face of the auxiliary seat 103. The stabilizing rod 116 is slidably connected to the auxiliary seat 103 and is located in the positioning groove 117. The stability of the fixing cylinder 102 during movement can be improved through the stabilizing rod 116.

[0031] Secondly, rotating discs 118 are provided at one ends of both the adjusting rod 111 and the rotating rod 114. The rotating rod 114 or the adjusting rod 111 can be conveniently rotated through the rotating discs 118, thus playing a role in saving effort.

[0032] When using a fixing device for preventing pipeline movement according to this embodiment, the rotating rod 114 is rotated by the rotating disk 118. The fixing block 109 moves on the rotating rod 114 through the action of the thread groove 110 and the thread, so as to drive the fixing cylinder 102 and the T-shaped block 108 to move towards the arm that needs infusion. When it moves to a suitable position, stop rotating, and then pull the moving rod 106 to drive the arc plate 14 to move upward. Pass the infusion tube through between the arc plate 14 and the arc groove 115, and then relax the moving rod 106. Under the action of the compression spring 105, the arc plate 14 holds and fixes the infusion tube, thereby preventing the infusion tube from being randomly pulled, and further achieving the fixing effect.

[0033] Second Embodiment:

[0034] Based on the first embodiment, please refer to Figure 5 , wherein Figure 5 is the front view of the second embodiment of the present invention.

[0035] The present invention provides a fixing device for preventing pipeline movement, further including a pedal 201, a soft pad 202, a headrest 203, and a plurality of support mechanisms. The support mechanism includes a connecting rod 204, a support pad 205, and a threaded sleeve 206.

[0036] For this specific embodiment, the pedal 201 is fixedly connected to the auxiliary seat 103 and is located at the lower end of the auxiliary seat 103. The soft pad 202 is fixedly connected to the auxiliary seat 103 and is located on the upper end surface of the auxiliary seat 103. The headrest 203 is fixedly connected to the auxiliary seat 103 and is located above the auxiliary seat 103. The pedal 201 facilitates the user to place the legs and feet. The settings of the soft pad 202 and the headrest 203 facilitate improving the comfort of the auxiliary seat 103.

[0037] Among them, a plurality of the support mechanisms are respectively fixedly connected to the auxiliary seat 103 and are located below the auxiliary seat 103. The support mechanism facilitates the support of the auxiliary seat 103, thereby preventing the auxiliary seat 103 from directly contacting the ground, and further facilitating subsequent movement.

[0038] Secondly, the connecting rod 204 is fixedly connected to the support pad 205 and is located above the support pad 205. The connecting rod 204 is also threadedly connected to the threaded sleeve 206 and is located within the threaded sleeve 206. The threaded sleeve 206 is fixedly connected to the auxiliary seat 103 and is located below the auxiliary seat 103. By threadedly connecting the connecting rod 204 to the threaded sleeve 206, it is convenient to replace the support pad 205.

[0039] Meanwhile, a lumbar support 207 is provided within the auxiliary seat 103. By means of the lumbar support 207, it is convenient to lift the user's waist, thereby improving comfort.

[0040] When using the fixing device for preventing pipeline movement of this embodiment, by means of the pedal 201, it is convenient for the user to place their legs and feet. The settings of the soft pad 202, the headrest 203, and the lumbar support 207 can facilitate improving the comfort of the auxiliary seat 103; the support mechanism can facilitate supporting the auxiliary seat 103, thereby preventing the auxiliary seat 103 from directly contacting the ground, and further facilitating subsequent movement. The threaded connection between the connecting rod 204 and the threaded sleeve 206 can facilitate replacing the support pad 205.

[0041] Third Embodiment:

[0042] The fixing device for preventing pipeline movement further includes two arm limiting mechanisms, and the two arm limiting mechanisms are respectively arranged on both sides of the auxiliary seat 103.

[0043] Each arm limiting mechanism includes a screw rod 301, an arc-shaped limiting block 302, a semi-circular cover 303, and a concave seat 304. A limiting ring is arranged at one end of the screw rod 301. A plugging component is arranged on one side of the concave seat 304. The screw rod 301 is threadedly connected to the semi-circular cover 303 and is located within the semi-circular cover 303 and penetrates through the upper and lower end faces of the semi-circular cover 303. The screw rod 301 is also rotatably connected to the arc-shaped limiting block 302, and the limiting ring is located within the arc-shaped limiting block 302. The semi-circular cover 303 is hinged to the concave seat 304 and covers the concave seat 304, and the plugging component is plugged into the semi-circular cover 303 and is located outside the semi-circular seat.

[0044] The plug-in component includes a limit spring 306, a plug-in rod 307, and a fixed box 308. A limit piece 309 is arranged on the plug-in rod 307. An activity cavity 305 is provided in the fixed box 308. The limit spring 306 is sleeved on the plug-in rod 307 and abuts between the limit piece 309 and the activity cavity 305. The plug-in rod 307 is slidably connected to the fixed box 308, is located in the activity cavity 305, and penetrates through both ends of the activity cavity 305. The plug-in rod 307 is also plugged into the semi-circular cover 303 and is located outside the semi-circular cover 303. The fixed box 308 is fixedly connected to the concave seat 304 and is located on one side of the concave seat 304.

[0045] Based on the second embodiment, please refer to Figures 6 to 9 , wherein Figure 6 is the three-dimensional perspective view of the third embodiment of the present invention, Figure 7 is the front view of the third embodiment of the present invention, Figure 8 is the Figure 7 cross-sectional view taken along line D-D in Figure 9 is the Figure 8 partial enlarged view at E in

[0046] The present invention provides a fixing device for preventing pipeline movement, further including two arm limiting mechanisms. The arm limiting mechanism includes a screw 301, an arc-shaped limiting block 302, a semi-circular cover 303, and a concave seat 304. The plug-in component includes a limit spring 306, a plug-in rod 307, and a fixed box 308.

[0047] For this specific embodiment, the two arm limiting mechanisms are respectively arranged on both sides of the auxiliary seat 103. Through the arm limiting mechanism, it is convenient to squeeze and fix the upper part of the user's arm, thereby preventing the user from moving around randomly.

[0048] Wherein, a limiting ring is provided at one end of the screw rod 301, a plugging component is provided on one side of the concave seat 304, the screw rod 301 is threadedly connected to the semi-circular cover 303, is located inside the semi-circular cover 303, and penetrates through the upper and lower end faces of the semi-circular cover 303. The screw rod 301 is also rotatably connected to the arc-shaped limiting block 302, and the limiting ring is located inside the arc-shaped limiting block 302. The semi-circular cover 303 is hinged to the concave seat 304 and covers the concave seat 304, and the plugging component is plugged into the semi-circular cover 303 and is located outside the semi-circular seat. By placing the user's arm in the concave seat 304, then covering the semi-circular cover 303 on the concave seat 304, fixing the semi-circular cover 303 through the plugging component, and finally rotating the screw rod 301, the screw rod 301 drives the arc-shaped limiting block 302 to abut against the upper part of the user's arm, thereby preventing the user from moving around randomly.

[0049] Secondly, a limiting piece 309 is provided on the plugging rod 307. The fixed box 308 has an activity cavity 305. The limiting spring 306 is sleeved on the plugging rod 307 and abuts between the limiting piece 309 and the activity cavity 305. The plugging rod 307 is slidably connected to the fixed box 308, is located inside the activity cavity 305, and penetrates through both ends of the activity cavity 305. The plugging rod 307 is also plugged into the semi-circular cover 303 and is located outside the semi-circular cover 303. The fixed box 308 is fixedly connected to the concave seat 304 and is located on one side of the concave seat 304. The limiting spring 306 can make the connection between the plugging rod 307 and the semi-circular cover 303 tighter.

[0050] When using a fixing device for preventing pipeline movement according to this embodiment, by placing the user's arm in the concave seat 304, then covering the semi-circular cover 303 on the concave seat 304, fixing the semi-circular cover 303 through the plugging component, and finally rotating the screw rod 301, the screw rod 301 drives the arc-shaped limiting block 302 to abut against the upper part of the user's arm, thereby preventing the user from moving around randomly.

[0051] The above-disclosed are only one or more preferred embodiments of the present application, and the scope of rights of the present application cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. A fixing device for preventing a pipeline from moving, characterized in that: The invention comprises a limiting extrusion structure, a lifting support rod, a fixing cylinder and an auxiliary seat, wherein the limiting extrusion structure comprises an arc plate, an extrusion spring, a moving rod and a mounting frame, a T-shaped block and a fixing block are arranged on the outer side of the fixing cylinder, a threaded groove is arranged in the fixing block, an adjusting rod is arranged in the fixing cylinder, a T-shaped groove is arranged on the rear end surface of the auxiliary seat, two supporting blocks are arranged on the rear end surface of the auxiliary seat, a rotating rod is arranged between the two supporting blocks, a thread is arranged on the rotating rod, an arc groove is arranged on the inner bottom of the mounting frame, the arc plate is slidably connected with the mounting frame, is located in the mounting frame, and covers the upper part of the arc groove, and the arc plate is also connected with the moving rod The lifting support rod is fixedly connected and located at one end of the moving rod, the extrusion spring is sleeved on the moving rod and is held between the arc plate and the mounting frame, the moving rod is slidably connected to the mounting frame and passes through the top of the mounting frame, the mounting frame is fixedly connected to the lifting support rod and is located above the lifting support rod, the lifting support rod is slidably connected to the fixed cylinder and is located in the fixed cylinder, and the lifting support rod is also threadedly connected to the adjusting rod and sleeved on the adjusting rod, the T-block is slidably connected to the auxiliary seat and is located in the T-slot, and the fixed block is threadedly connected to the rotating rod and sleeved on the rotating rod.

2. The fixing device for preventing pipeline movement according to claim 1, characterized in that: A stabilizing rod is also arranged on the outer side of the fixing tube, and a positioning groove is also arranged on the rear end surface of the auxiliary seat. The stabilizing rod is slidably connected with the auxiliary seat and is located in the positioning groove.

3. The fixing device for preventing pipeline movement according to claim 2, characterized in that: One end of the adjusting rod and the rotating rod is provided with a rotating disk.

4. The fixing device for preventing pipeline movement according to claim 3, characterized in that: The fixing device for preventing the pipeline from moving also includes a pedal, a cushion and a headrest. The pedal is fixedly connected to the auxiliary seat and is located at the lower end of the auxiliary seat. The cushion is fixedly connected to the auxiliary seat and is located on the upper end surface of the auxiliary seat. The headrest is fixedly connected to the auxiliary seat and is located above the auxiliary seat.

5. The fixing device for preventing pipeline movement according to claim 4, characterized in that: The fixing device for preventing the pipeline from moving further comprises a plurality of supporting mechanisms, wherein the plurality of supporting mechanisms are respectively fixedly connected to the auxiliary seat and are located below the auxiliary seat.

6. The fixing device for preventing pipeline movement according to claim 5, characterized in that: The support mechanism includes a connecting rod, a support pad and a threaded sleeve. The connecting rod is fixedly connected to the support pad and is located above the support pad. The connecting rod is also threadedly connected to the threaded sleeve and is located inside the threaded sleeve. The threaded sleeve is fixedly connected to the auxiliary seat and is located below the auxiliary seat.

7. The fixing device for preventing pipeline movement according to claim 6, characterized in that: A lumbar support is arranged in the auxiliary seat.