Seat conversion device and seat conversion wheelchair

Abstract

The present invention relates to a seat conversion device and a seat conversion wheelchair. It includes a toilet panel and a retractable seat, and also includes a first support rail, a second support rail, a fixed reel mechanism and a movable reel mechanism. The first support rail and the second support rail are respectively arranged on the left and right sides of the toilet panel, the fixed reel mechanism is arranged on the rear side of the toilet panel, the movable reel mechanism and the fixed reel mechanism are arranged in parallel, and the two ends of the movable reel mechanism are respectively guided and slidably assembled on the first support rail and the second support rail. The movable reel mechanism includes a first reel and a gear transmission structure, one side of the retractable seat is connected and fixed to the fixed reel mechanism, and the other side is connected and fixed to the first reel. By adopting the seat conversion device and the seat conversion wheelchair of the present invention, the problem of the prior art that the user needs to lift the buttocks to retract the seat is avoided, and the toileting of patients with limited mobility is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of toilet seat switching, and in particular to a seat surface conversion device and a seat surface conversion wheelchair. Background Art

[0002] In daily life, some elderly people, disabled people, and patients with severe burns need to use a seat-convertible wheelchair to walk due to their limited mobility. In order to facilitate these people's use of the toilet, most of the existing seat-convertible wheelchair seats are provided with a toilet opening. In order to avoid the toilet opening being directly exposed to the outside, the seat-convertible wheelchair seat is usually also provided with a seat surface for covering the toilet opening. Usually, the seat surface will cover the toilet opening, and the user will sit directly on the seat surface. When the toilet is needed, the seat surface can be moved away from the toilet opening. However, the existing seat surface requires the user to lift the buttocks to move, and it is difficult for people who are already limited in mobility to support the buttocks with their legs, which causes inconvenience to the use of the toilet opening of the seat-convertible wheelchair. In severe cases, it may even cause the patient with limited mobility to collapse, which is not conducive to the safe use of the toilet opening. Summary of the invention

[0003] The purpose of the present invention is to provide a seat conversion device to solve the technical problem that the seat of the seat conversion wheelchair in the prior art requires the user to lift the buttocks to move, which is not conducive to the safe use of the toilet opening. The present invention also provides a seat conversion wheelchair using the above-mentioned seat conversion device.

[0004] In order to achieve the above object, the present invention provides a seat conversion device, which adopts the following technical solution:

[0005] A seat conversion device includes a toilet panel and a retractable seat arranged above the toilet panel, and also includes a first supporting guide rail, a second supporting guide rail, a fixed scroll mechanism and a movable scroll mechanism, wherein the first supporting guide rail and the second supporting guide rail are respectively arranged on the left and right sides of the toilet panel, the fixed scroll mechanism is arranged on the rear side of the toilet panel, the movable scroll mechanism and the fixed scroll mechanism are arranged in parallel, and the two ends of the movable scroll mechanism are respectively guided and slidably assembled on the first supporting guide rail and the second supporting guide rail, the movable scroll mechanism includes a first scroll and a gear transmission structure, one side of the retractable seat is connected and fixed to the fixed scroll mechanism, and the other side is connected and fixed to the first scroll, the retractable seat is located above the fixed scroll mechanism and the movable scroll mechanism, and the gear transmission structure is used to drive the first scroll to roll and move to achieve the retracting of the retractable seat.

[0006] Furthermore, the gear transmission structure includes a gear, a rack and a drive motor, the gear is fixed on the drive shaft of the drive motor, the rack is extended and arranged on the first support rail and / or the second support rail, the gear and rack are meshed for transmission, and the drive shaft of the drive motor is coaxially connected to the first reel.

[0007] Furthermore, the gear transmission structure also includes a first load-bearing wheel group, which is arranged in parallel beside the gear, and is used to bear the gravity exerted on the first reel.

[0008] Furthermore, the first load-bearing wheel set includes a roller and a bearing assembled inside the roller.

[0009] Furthermore, the first reel includes a thick rod portion and a thin rod portion arranged at both ends of the thick rod portion, the thin rod portion is transmission-connected to the drive shaft of the drive motor via a coupling, the gear is fixedly mounted on the thin rod portion, and first load-bearing wheel groups are arranged on both sides of the gear, each first load-bearing wheel group is mounted on the thin rod portion, and one side of the winding seat surface is connected and fixed to the thick rod portion.

[0010] Furthermore, the first supporting guide rail and the second supporting guide rail both include an upper load-bearing beam and a lower load-bearing beam spaced apart from each other, and the movable scroll mechanism also includes a first guide frame, which is slidingly assembled on the outer sides of the upper load-bearing beam and the lower load-bearing beam, and the gear and the first load-bearing wheel group are both located in the first guide frame.

[0011] Furthermore, the rack is extended and arranged on the upper load-bearing beam, and the lower load-bearing beam is provided with a long avoidance groove for avoiding the gear.

[0012] Furthermore, the first support rail and the second support rail also include a first vertical plate and a second vertical plate, the first load-bearing beam and the second load-bearing beam are clamped and fixed between the first vertical plate and the second vertical plate, and a guide structure is also arranged between the first vertical plate and the second vertical plate, and the guide structure includes a guide rod arranged between the first vertical plate and the second vertical plate and a first guide sleeve connected and fixed to the first guide frame, and the first guide sleeve and the guide rod guide sliding assembly.

[0013] Furthermore, the fixed reel mechanism includes a second reel, a second load-bearing wheel group, and a second guide frame. The second load-bearing wheel group and the second guide frame are both arranged at the end of the second reel. The second guide frame is assembled on the outer peripheral side of the upper load-bearing beam and the lower load-bearing beam. The second load-bearing wheel group is located in the second guide frame. A baffle for stopping the second load-bearing wheel group is also arranged between the upper load-bearing beam and the lower load-bearing beam.

[0014] The present invention also provides a seat-convertible wheelchair, which adopts the following technical solution:

[0015] A seat conversion wheelchair includes a seat conversion device, which includes a toilet panel and a retractable seat arranged above the toilet panel, and also includes a first supporting guide rail, a second supporting guide rail, a fixed reel mechanism and a movable reel mechanism, wherein the first supporting guide rail and the second supporting guide rail are respectively arranged on the left and right sides of the toilet panel, the fixed reel mechanism is arranged on the rear side of the toilet panel, the movable reel mechanism and the fixed reel mechanism are arranged in parallel, and the two ends of the movable reel mechanism are respectively guided and slidably assembled on the first supporting guide rail and the second supporting guide rail, the movable reel mechanism includes a first reel and a gear transmission structure, one side of the retractable seat is connected and fixed to the fixed reel mechanism, and the other side is connected and fixed to the first reel, the retractable seat is located above the fixed reel mechanism and the movable reel mechanism, and the gear transmission structure is used to drive the first reel to roll and move to achieve the retraction of the retractable seat.

[0016] Furthermore, the gear transmission structure includes a gear, a rack and a drive motor, the gear is fixed on the drive shaft of the drive motor, the rack is extended and arranged on the first support rail and / or the second support rail, the gear and rack are meshed for transmission, and the drive shaft of the drive motor is coaxially connected to the first reel.

[0017] Furthermore, the gear transmission structure also includes a first load-bearing wheel group, which is arranged in parallel beside the gear, and is used to bear the gravity exerted on the first reel.

[0018] Furthermore, the first load-bearing wheel set includes a roller and a bearing assembled inside the roller.

[0019] Furthermore, the first reel includes a thick rod portion and a thin rod portion arranged at both ends of the thick rod portion, the thin rod portion is transmission-connected to the drive shaft of the drive motor via a coupling, the gear is fixedly mounted on the thin rod portion, and first load-bearing wheel groups are arranged on both sides of the gear, each first load-bearing wheel group is mounted on the thin rod portion, and one side of the winding seat surface is connected and fixed to the thick rod portion.

[0020] Furthermore, the first supporting guide rail and the second supporting guide rail both include an upper load-bearing beam and a lower load-bearing beam spaced apart from each other, and the movable scroll mechanism also includes a first guide frame, which is slidingly assembled on the outer sides of the upper load-bearing beam and the lower load-bearing beam, and the gear and the first load-bearing wheel group are both located in the first guide frame.

[0021] Furthermore, the rack is extended and arranged on the upper load-bearing beam, and the lower load-bearing beam is provided with a long avoidance groove for avoiding the gear.

[0022] Furthermore, the first support rail and the second support rail also include a first vertical plate and a second vertical plate, the first load-bearing beam and the second load-bearing beam are clamped and fixed between the first vertical plate and the second vertical plate, and a guide structure is also arranged between the first vertical plate and the second vertical plate, and the guide structure includes a guide rod arranged between the first vertical plate and the second vertical plate and a first guide sleeve connected and fixed to the first guide frame, and the first guide sleeve and the guide rod guide sliding assembly.

[0023] Furthermore, the fixed reel mechanism includes a second reel, a second load-bearing wheel group, and a second guide frame. The second load-bearing wheel group and the second guide frame are both arranged at the end of the second reel. The second guide frame is assembled on the outer peripheral side of the upper load-bearing beam and the lower load-bearing beam. The second load-bearing wheel group is located in the second guide frame. A baffle for stopping the second load-bearing wheel group is also arranged between the upper load-bearing beam and the lower load-bearing beam.

[0024] Compared with the prior art, the seat conversion device and the seat conversion wheelchair of the embodiment of the present invention have the following beneficial effects: by adopting the seat conversion device and the seat conversion wheelchair of the present invention, the user sits on the retracted seat surface during normal use. When going to the toilet, the moving reel mechanism is activated, and the moving reel mechanism drives the first reel to roll and move. At this time, the retracted seat surface is wound and retracted on the outer peripheral side of the first reel, thereby realizing the retraction of the retracted seat surface. Since the retracted seat surface does not need to overcome the friction of the user's buttocks during the retraction process, the problem of the prior art that the user needs to lift the buttocks to retract the seat surface is avoided, which facilitates the toileting of patients with limited mobility and improves the safety of using the seat surface for toileting. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the seat surface conversion device according to an embodiment of the present invention;

[0026] Figure 2 2 is a schematic diagram of the structure of a toilet panel of a seat surface conversion device according to an embodiment of the present invention;

[0027] Figure 3 2 is a schematic diagram of the overall structure of the first supporting rail of the seat surface conversion device according to an embodiment of the present invention;

[0028] Figure 4 2 is a schematic diagram of the overall structure of the fixed reel mechanism of the seat conversion device according to an embodiment of the present invention;

[0029] Figure 5 2 is a schematic diagram of the installation of a fixed reel mechanism of a seat conversion device according to an embodiment of the present invention;

[0030] Figure 6 2 is a schematic diagram of an end portion of a moving scroll mechanism of a seat conversion device according to an embodiment of the present invention;

[0031] Figure 7 2 is a schematic structural diagram of a first load-bearing wheel group of a seat surface conversion device according to an embodiment of the present invention;

[0032] Figure 8 1 is an overall schematic diagram of a moving scroll mechanism of a seat conversion device according to an embodiment of the present invention;

[0033] Fig. 9 It is a schematic diagram of the installation of the fixed reel mechanism and the movable reel mechanism of the seat conversion device according to an embodiment of the present invention;

[0034] Fig.10 It is a schematic diagram of the retracted seat surface of the seat surface conversion device according to an embodiment of the present invention.

[0035] In the figure, 1-retractable seat, 2-first supporting guide rail, 3-second supporting guide rail, 4-fixed reel mechanism, 5-movable reel mechanism, 6-toilet panel, 7-toilet opening, 8-connecting frame, 9-upper load-bearing beam, 10-lower load-bearing beam, 11-rack, 12-avoidance long groove, 13-first vertical plate, 14-second vertical plate, 15-baffle, 16-guide rod, 17-second reel, 18-second guide frame, 19-second load-bearing wheel group, 20-second guide sleeve, 21-first reel, 22-first load-bearing wheel group, 23-gear, 24-coupling, 25-drive motor, 26-first guide frame, 27-first guide sleeve, 28-motor frame, 29-drum, 30-bearing. DETAILED DESCRIPTION

[0036] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0037] like Figures 1 to 10 As shown, a seat conversion device of a preferred embodiment of the present invention. The seat conversion device includes a toilet panel 6 and a retractable seat 1 arranged above the toilet panel 6, and also includes a first support rail 2, a second support rail 3, a fixed reel mechanism 4 and a movable reel mechanism 5, wherein the first support rail 2 and the second support rail 3 are respectively arranged on the left and right sides of the toilet panel 6, the fixed reel mechanism 4 is arranged on the rear side of the toilet panel 6, the movable reel mechanism 5 is arranged in parallel with the fixed reel mechanism 4, and the two ends of the movable reel mechanism 5 are respectively guided and slidably assembled on the first support rail 2 and the second support rail 3, the movable reel mechanism 5 includes a first reel 21 and a gear transmission structure, one side of the retractable seat 1 is connected and fixed to the fixed reel mechanism 4, and the other side is connected and fixed to the first reel 21, the retractable seat 1 is located above the fixed reel mechanism 4 and the movable reel mechanism 5, and the gear transmission structure is used to drive the first reel 21 to roll and move to realize the retracting of the retractable seat 1.

[0038] Specifically, the seat conversion device in this embodiment includes a toilet panel 6, which is a rectangular plate. A toilet opening 7 is provided in the middle of the toilet panel 6, and the toilet opening 7 is triangular. In this embodiment, a connecting frame 8 is fixed to both the front and rear sides of the toilet panel 6, and the connecting frame 8 is specifically a strip-shaped connecting steel plate. In this embodiment, the first support rail 2 is fixed to the left side of the toilet panel 6, and the second support panel is fixed to the right side of the toilet panel 6. Specifically, in this embodiment, the two ends of the two connecting frames 8 are respectively welded and fixed to the first support rail 2 and the second support rail 3.

[0039] Since the structures of the first support rail 2 and the second support rail 3 are the same, in this embodiment, only the specific structure of the first support rail 2 is described in detail. Figure 3 As shown, in this embodiment, the first support rail 2 includes an upper load-bearing beam 9 and a lower load-bearing beam 10 spaced apart from each other, and both the upper load-bearing beam 9 and the lower load-bearing beam 10 are in the shape of strip plates. The first support rail 2 also includes a first vertical plate 13 and a second vertical plate 14 spaced apart and arranged in parallel in front and back, and the bottoms of the first vertical plate 13 and the second vertical plate 14 are semicircular. In this embodiment, the lower load-bearing beam 10 is clamped and fixed between the first vertical plate 13 and the second vertical plate 14, and the upper load-bearing beam 9 is placed on the top of the first vertical plate 13 and the second vertical plate 14. In this embodiment, a rack 11 is provided on the upper load-bearing beam 9, and the rack 11 is extended along the front-to-back direction; the lower load-bearing beam 10 is provided with an avoidance long groove 12, and the avoidance long groove 12 is also extended along the front-to-back direction. Since the movable scroll mechanism 5 needs to move forward and backward along the first support rail 2 and the second support rail 3, in order to enhance the guiding effect, in this embodiment, a guide rod 16 is further arranged between the first vertical plate 13 and the second vertical plate 14. The guide rod 16 is also extended along the front and rear direction, and the guide rod 16 is located below the load-bearing beam.

[0040] like Figure 4As shown, the fixed reel mechanism 4 in this embodiment includes a second reel 17, a second load-bearing wheel set 19, a second guide frame 18 and a second guide sleeve 20. In this embodiment, there are two second load-bearing wheel sets 19, two second guide frames 18 and two second guide sleeves 20, which are respectively arranged at the two ends of the second reel 17. Specifically, in this embodiment, the second reel 17 includes a thick rod portion and a thin rod portion, and there are two thin rod portions, which are respectively located at the two ends of the thick rod portion. In this embodiment, two second load-bearing wheel sets 19 are respectively assembled on the corresponding thin rod portions, and two second guide frames 18 are respectively covered on the outside of the corresponding second load-bearing wheel sets 19. It should be noted that in this embodiment, the second guide frame 18 is in the shape of a quadrangular prism, and a square guide hole is arranged in the second guide frame 18 for the upper load-bearing beam 9 and the lower load-bearing beam 10 to pass through. In this embodiment, the two second load-bearing wheel groups 19 are located between the corresponding upper load-bearing beam 9 and the lower load-bearing beam 10, and the second guide frame 18 is also provided with a through hole for the corresponding thin rod to penetrate, and the thin rods at both ends of the second reel 17 are inserted into the corresponding second guide frame 18. In this embodiment, the rear side of the retracted seat 1 is connected and fixed to the thick rod of the second reel 17.

[0041] In this embodiment, a second guide sleeve 20 is also provided at the lower side of each second guide frame 18, and the second guide sleeve 20 is used to cover the outer peripheral side of the guide rod 16, so as to strengthen the structural strength. It should be noted that in this embodiment, the second reel 17 includes a central shaft and a sleeve, and the sleeve is sleeved on the outer peripheral side of the central shaft. In this embodiment, the central shaft and the sleeve are welded and fixed to stop rotation, and the sleeve portion constitutes the thick rod portion in this embodiment, and the portions of the central shaft at both ends exceeding the sleeve constitute the thin rod portion in this embodiment.

[0042] In this embodiment, the second load-bearing wheel set 19 is used to contact the lower load-bearing beam 10, so as to support the two ends of the second reel 17. Since the fixed reel mechanism 4 has to pull and reel the seat surface 1 during use, in order to prevent the fixed reel mechanism 4 from moving, in this embodiment, a baffle 15 is further provided between the upper load-bearing beam 9 and the lower load-bearing beam 10. The baffle 15, the upper load-bearing beam 9, the lower load-bearing beam 10, and the second vertical plate 14 form a frame structure. Figure 3 As shown, the thin rod portion of the second reel 17 and the second load-bearing wheel set 19 are confined within the frame structure, and when the reeling seat 1 pulls the second reel 17, the second load-bearing wheel set 19 will be blocked by the baffle 15, thereby playing the role of fixing the fixed reel mechanism 4. In this embodiment, the second reel 17 can rotate, and in other embodiments, the second reel 17 can also be directly welded and fixed to the first support rail 2 and the second support rail 3, that is, the second reel 17 cannot rotate.

[0043] The installation method of the right end of the fixed reel mechanism 4 and the second support rail 3 in this embodiment is the same as the installation method of the fixed reel mechanism 4 and the first support rail 2 described above, and will not be described in detail in this embodiment.

[0044] like Figure 6 and Figure 8 As shown, in this embodiment, both ends of the movable reel mechanism 5 are respectively assembled with the first support rail 2 and the second support rail 3 for guiding and sliding movement. Figure 6 As shown, the movable scroll mechanism 5 in this embodiment includes a first scroll 21, a first load-bearing wheel group 22, a gear 23, a coupling 24, a drive motor 25, a first guide frame 26, a motor frame 28 and a first guide sleeve 27. In this embodiment, the first load-bearing wheel group 22, the gear 23, the coupling 24, the drive motor 25, the first guide frame 26, the motor frame 28 and the first guide sleeve 27 are provided at both ends of the first scroll 21. Since the left and right ends of the movable scroll mechanism 5 are installed in the same manner as the first support rail 2 and the second support rail 3, only one end of the movable scroll mechanism 5 is described in detail in this embodiment.

[0045] like Figure 6 As shown, in this embodiment, the first reel 21 also includes a thick rod portion and a thin rod portion. The structure of the first reel 21 is the same as that of the second reel 17, which will not be described in detail in this embodiment. In this embodiment, a gear 23 and two first load-bearing wheel groups 22 are installed on the thin rod portion at the left end of the first reel 21, and the two first load-bearing wheel groups 22 are respectively located on the left and right sides of the gear 23. In this embodiment, the driving shaft of the driving motor 25 is coaxially connected to the first reel 21 through a coupling 24. In this embodiment, the first guide frame 26 is guided and slidably assembled on the outer peripheral side of the upper load-bearing beam 9 and the lower load-bearing beam 10. Since the structure of the first guide frame 26 is the same as that of the second guide frame 18, it will not be described in detail in this embodiment. Since the movable reel mechanism 5 is to be guided and moved along the first support rail 2 and the second support rail 3, in order to enhance the guiding effect, in this embodiment, a first guide sleeve 27 is also provided below the first guide frame 26. The structure of the first guide sleeve 27 is the same as that of the second guide sleeve 20, which will not be described in detail in this embodiment. In order to facilitate the installation and fixation of the driving motor 25 , in this embodiment, a motor frame 28 is further provided on the side of the first guide frame 26 . The motor frame 28 is in the shape of a rectangular parallelepiped, and panels are further provided on the bottom and side surfaces of the motor frame 28 .

[0046] When the movable reel mechanism 5 of this embodiment is assembled, the gear 23 and the two first load-bearing wheel groups 22 are located in the first guide frame 26, and the drive motor 25 and the coupling 24 are located in the motor frame 28. In this embodiment, both the left and right sides of the first guide frame 26 are provided with through holes for the thin rod portion of the first reel 21 to pass through. The overall structure of the movable reel mechanism 5 after assembly is as follows: Figure 8As shown. In this embodiment, the first guide frame 26 is guided and slidably assembled on the outer peripheral side of the upper load-bearing beam 9 and the lower load-bearing beam 10, and the gear 23 and the two first load-bearing wheel groups 22 are located between the upper load-bearing beam 9 and the lower load-bearing beam 10. In this embodiment, the gears 23 at both ends of the first reel 21 are respectively meshed and driven with the corresponding racks 11 on the upper load-bearing beam 9, and the bottom of the gear 23 is laterally inserted into the avoidance slot 12 on the lower load-bearing beam 10, thereby avoiding the situation where the gear 23 and the lower load-bearing beam 10 touch each other. In this embodiment, the meshing transmission of the gear 23 and the rack 11 can not only realize the rolling movement of the first reel 21, but also play a role in self-locking the first reel 21, that is, when the driving shaft of the driving motor 25 does not rotate, the first reel 21 can be kept at the set position by the meshing and biting of the gear 23 and the rack 11.

[0047] In this embodiment, each first load-bearing wheel group 22 plays a role in supporting the end of the first reel 21. Figure 7 As shown, in this embodiment, the first load-bearing wheel set 22 includes a roller 29 and a bearing 30 assembled in the roller 29. In this embodiment, the thin rod portion of the first reel 21 penetrates into the inner ring of the bearing 30, and the roller 29 is used to contact the lower load-bearing beam 10, thereby playing a supporting role. It should be noted that in this embodiment, the second load-bearing wheel set 19 can adopt the same structure as the first load-bearing wheel set 22, and the second load-bearing wheel set 19 can also be designed as a whole cylinder. In this case, the second load-bearing wheel set 19 can be directly connected and fixed to the thin rod portion of the second reel 17.

[0048] In this embodiment, the front side of the rolling seat 1 is connected and fixed to the thick rod portion of the first reel 21, and the rear side is connected and fixed to the thick rod portion of the second reel 17. The rolling seat 1 is located above the first reel 21 and the second reel 17. In this way, when the moving reel mechanism 5 rolls up the rolling seat 1, the first reel 21 is wound under the rolling panel, thereby avoiding the first reel 21 from interfering with the user's buttocks during rolling up, thereby facilitating the rolling up of the rolling seat 1.

[0049] In this embodiment, the retractable seat surface 1 includes a bottom seat surface and a top seat surface, wherein the bottom seat surface is woven from high-strength stainless steel wire, and the top seat surface is made of breathable cotton fabric, and the bottom seat surface and the top seat surface are connected and fixed by gluing. Such a structural design enables the retractable seat surface 1 to have a certain supporting strength and also be bent and retracted.

[0050] The working process of the present invention is as follows: in a normal state, the movable reel mechanism 5 and the fixed reel mechanism 4 are respectively located at the front and rear ends of the first support rail 2 and the second support rail 3, that is, Figure 1As shown, at this time, the retractable seat surface 1 is blocked above the toilet seat surface, and the user can sit on the retractable seat surface 1. When it is necessary to use the toilet, the drive motors 25 at both ends of the movable reel mechanism 5 are started, and the drive motors 25 at both ends will drive the first reel 21 and the two gears 23 to rotate synchronously. The two gears 23 will roll along the front-to-back direction under the action of the corresponding rack 11, thereby realizing the rolling movement drive of the first reel 21, and the rolling first reel 21 will wind up the retractable seat surface 1. When the movable reel mechanism 5 moves to contact with the fixed reel mechanism 4, the retractable seat surface 1 will be completely retracted, and the toilet seat surface below will leak out, thereby facilitating the user's use of the toilet.

[0051] An embodiment of a seat-convertible wheelchair of the present invention: The seat-convertible wheelchair includes a seat-converting device for supporting the user's buttocks. The specific structure of the seat-converting device is the same as the specific structure of the above-mentioned seat-converting device, and will not be described in detail in this embodiment.

[0052] In summary, the embodiments of the present invention provide a seat conversion device and a seat conversion wheelchair. By adopting the seat conversion device and the seat conversion wheelchair of the present invention, the user sits on the retractable seat 1 during normal use. When going to the toilet, the moving reel mechanism 5 is activated, and the moving reel mechanism 5 drives the first reel 21 to roll and move. At this time, the retractable seat 1 is wound and retracted on the outer peripheral side of the first reel 21, thereby realizing the retraction of the retractable seat 1. Since the retractable seat 1 does not need to overcome the friction of the user's buttocks during the retraction process, the problem of the prior art that the user needs to lift the buttocks to retract the seat is avoided, which facilitates the use of the toilet for patients with limited mobility and improves the safety of using the seat to the toilet.

[0053] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A seat conversion device, characterized in that: It includes a toilet panel and a retractable seat surface arranged above the toilet panel, and also includes a first supporting guide rail, a second supporting guide rail, a fixed reel mechanism and a movable reel mechanism, wherein the first supporting guide rail and the second supporting guide rail are respectively arranged on the left and right sides of the toilet panel, the fixed reel mechanism is arranged on the rear side of the toilet panel, the movable reel mechanism and the fixed reel mechanism are arranged in parallel, and the two ends of the movable reel mechanism are respectively guided and slidably assembled on the first supporting guide rail and the second supporting guide rail, the movable reel mechanism includes a first reel and a gear transmission structure, one side of the retractable seat surface is connected and fixed to the fixed reel mechanism, and the other side is connected and fixed to the first reel, the retractable seat surface is located above the fixed reel mechanism and the movable reel mechanism, and the gear transmission structure is used to drive the first reel to roll and move to realize the retracting of the retractable seat surface; The retractable seat surface includes a bottom seat surface and a top seat surface, the bottom seat surface is woven from high-strength stainless steel wire, the top seat surface is a breathable cotton fabric, and the bottom seat surface and the top seat surface are connected and fixed by gluing; The gear transmission structure includes a gear, a rack and a drive motor, the gear is fixed on the drive shaft of the drive motor, the rack is extended and arranged on the first support rail and / or the second support rail, the gear and the rack are meshed and driven, and the drive shaft of the drive motor is coaxially connected to the first reel; The gear transmission structure further includes a first load-bearing wheel set, which is arranged in parallel beside the gear, and the first load-bearing wheel set is used to bear the gravity exerted on the first reel; The first support rail and the second support rail both include an upper load-bearing beam and a lower load-bearing beam spaced apart from each other, the movable scroll mechanism also includes a first guide frame, the first guide frame is slideably mounted on the outer sides of the upper load-bearing beam and the lower load-bearing beam, and the gear and the first load-bearing wheel set are both located in the first guide frame; The first support rail and the second support rail also include a first vertical plate and a second vertical plate, the upper load-bearing beam and the lower load-bearing beam are clamped and fixed between the first vertical plate and the second vertical plate, and a guide structure is also arranged between the first vertical plate and the second vertical plate, and the guide structure includes a guide rod arranged between the first vertical plate and the second vertical plate and a first guide sleeve connected and fixed to the first guide frame, and the first guide sleeve and the guide rod guide sliding assembly.

2. The seat surface conversion device according to claim 1, characterized in that: The first load-bearing wheel set includes a roller and a bearing assembled inside the roller.

3. The seat conversion device according to claim 2, characterized in that: The first reel includes a thick rod portion and thin rod portions arranged at both ends of the thick rod portion, the thin rod portion is transmission-connected to the driving shaft of the driving motor through a coupling, the gear is fixedly mounted on the thin rod portion, and first load-bearing wheel groups are arranged on both sides of the gear, each first load-bearing wheel group is mounted on the thin rod portion, and one side of the winding seat surface is connected and fixed to the thick rod portion.

4. The seat surface conversion device according to claim 1, characterized in that: The rack is extended and arranged on the upper load-bearing beam, and the lower load-bearing beam is provided with an avoidance long groove for avoiding the gear.

5. The seat surface conversion device according to claim 1, characterized in that: The fixed reel mechanism includes a second reel, a second load-bearing wheel group, and a second guide frame. The second load-bearing wheel group and the second guide frame are both arranged at the end of the second reel. The second guide frame is assembled on the outer peripheral side of the upper load-bearing beam and the lower load-bearing beam. The second load-bearing wheel group is located in the second guide frame. A baffle for stopping the second load-bearing wheel group is also arranged between the upper load-bearing beam and the lower load-bearing beam.

6. A seat-convertible wheelchair, characterized in that: It comprises a seat surface conversion device, wherein the seat surface conversion device adopts the seat surface conversion device as described in any one of claims 1 to 5 above.

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