TW202000167A - Wheelchair with height-adjustable seat for allowing caregivers to conveniently move people with disabilities - Google Patents

Abstract

Provided is a wheelchair with a height-adjustable seat, which includes a base, a seat assembly and a seat back assembly. The seat assembly includes a bottom plate and a top plate, wherein the bottom plate and the top plate are connected by a plurality of connection members, and the top plate is driven to displace by pivotally rotating and linking a support rod assembly and a pressing rod, so that the height of the wheelchair seat is raised to reach the same height as a hospital bed or other carriers, thereby allowing caregivers to conveniently move people with disabilities.

Description

Wheelchair with convertible seat height

The invention relates to a wheelchair, in particular to a wheelchair structure that allows caregivers to take care of people with reduced mobility more easily.

When caring for people with limited mobility who use wheelchairs, the main difficulty encountered in the current nursing work is that the height difference between the wheelchair and the bed or other vehicles causes the caregiver to move the patient to the wheelchair and bed or other vehicles. Moving between rooms is relatively laborious; in addition, the rear wheels of existing wheelchairs are mainly responsible for moving forward and backward. If the wheelchair needs to be pushed to the bed, usually the space is limited to restrict the movement of the wheelchair, and the lack of wheelchairs causes difficulties in nursing work. Therefore, how to design a wheelchair that allows caregivers to take care of people with reduced mobility more easily is an important issue.

In view of this, the main purpose of the present invention is to provide a wheelchair that can increase the height of the seat, thereby reducing the height difference between the seat of the wheelchair and the hospital bed or other vehicles.

Another main object of the present invention is to provide a wheelchair that makes it easier to care for people with reduced mobility.

To achieve the above object, the wheelchair with a convertible seat height of the present invention includes: a first direction; a base; a seat assembly connected to the base, which includes a bottom plate, and is provided on the base; a The top plate is provided above the bottom plate and parallel to the bottom plate; a plurality of connecting pieces are connected to the bottom plate and the top plate; a support bar assembly is provided between the bottom plate and the top plate, and one end of the bottom plate is pivotally connected to the bottom plate Or one of the top plates, the other end is pushed against the other of the bottom plate or the top plate; and a push rod is provided on one side of the support rod assembly along the first direction, and one end thereof is pressed against the support rod assembly, It is pivotally connected between the bottom plate and the top plate, and its pivot point is located between the two ends of the support rod assembly. When the push rod pivots, it pushes against the support rod assembly to pivot to drive the displacement of the top plate and change the The relative distance between the top plate and the bottom plate; and a seat back component connected to the base and located on a side of the seat component along the first direction.

In the wheelchair with a convertible seat height as described above, preferably, the seat assembly further includes a limiting stop rod assembly, which is disposed between the bottom plate and the top plate, and includes a blocking rod and a stop block, One end of the blocking rod is pivotally connected to one of the bottom plate or the top plate, and the other end is pushed against the other of the bottom plate or the top plate. The blocking block is protrudingly provided on the opposite side of the pivoting end of the blocking rod and is located on the blocking block The side of the lever pivot direction.

In the wheelchair with a convertible seat height as described above, preferably, the connecting member of the seat assembly is a shock absorber.

The wheelchair with a convertible seat height as described above, preferably, wherein each shock absorber respectively includes a cylinder member, a shock spring and a stopper, the shock spring is along the axis of the cylinder member A direction sleeve is arranged on the pressure cylinder member, and the limiting member is connected to the pressure cylinder member movably along the axial direction of the pressure cylinder member, and is arranged at one end of the shock absorber spring.

The wheelchair with a convertible seat height as described above, wherein the seat back assembly includes a back plate assembly pivotally connected to the base; and a fixing device connected to the back plate assembly including a limit plate, The back plate assembly and the base are connected with a limiting part, and the limiting part has a locking point and an unlocking point; and a clamping piece is connected to the limiting part of the safety plate.

The wheelchair with a convertible seat height as described above, further includes an auxiliary wheel assembly connected to the base, which includes two support plates pivoted to the base at intervals; a plurality of steering wheels are divided into Two groups are connected to the bottom of each support plate, and each steering wheel can be connected to its corresponding support plate in a 360-degree rotation; a connecting rod connects the two support plates; and a safety plate detachably connects the auxiliary wheel The assembly and the base are provided with a connecting part and a connecting piece which are detachably joined.

With the above technical means, the present invention has the following efficiency gains:

1. The structure of the seat assembly of the present invention can use the push rod to push the support rod assembly to increase the height of the top plate of the seat assembly, so that the seat of the present invention can reach the same height as the hospital bed or other carriers, which is convenient for care and transportation. By.

2. The present invention can further pivotally connect the seat back component to the base, and after raising the height of the top plate of the seat component, the seat back component can be pivoted to a horizontal level, so that people with reduced mobility can change from a seated position to a flat lying state. Caregivers can easily move people with reduced mobility horizontally.

3. The present invention can be further provided with an auxiliary wheel assembly. When it needs to move in a small space, the steering wheel of the auxiliary wheel assembly can be used to replace the rear wheel, so that the wheelchair of the present invention can be rotated 360 degrees at will, and the wheelchair can be easily pushed To locate and turn to the required angle, to overcome the inconvenience of using wheelchairs in narrow spaces.

4. The connecting member of the seat assembly of the present invention can further use a shock absorber. When the wheelchair moves on a bumpy road, it can absorb the vibration of the seat assembly to achieve the effect of shock absorption.

The present invention is a wheelchair with convertible seat height. For a preferred embodiment, please refer to FIG. 1, which includes a first direction, a base 10, a seat assembly 20 and a seat back assembly 30. Wherein, the base 10 mainly includes a bracket 11, and two opposite sides of the bracket 11 are respectively connected to a rear wheel 12, which can drive the base 10 to move forward and backward in the first direction. Preferably, the bracket 11 is A rocker support 13 is provided near each rear wheel 12. When the rocker support 13 hits the ground, the rear wheel 12 is slightly off the ground and cannot drive the base 10 to move, and two armrests 14 are provided, respectively. It extends in the first direction and is located above the top edge of each rear wheel 12.

With reference to FIG. 2, the seat assembly 20 is connected to the base 10 and includes a bottom plate 21, a top plate 22, a plurality of connecting pieces 23, a support rod assembly 24, a push rod 25, and a restricting stop rod Assembly 26; wherein, the bottom plate 21 is horizontally fixed to the bracket 11 of the base 10, the top plate 22 is provided above the bottom plate 21 and parallel to the bottom plate 21, and is connected to the bottom plate 21 to have a seat position And a lying position, and the distance between the top plate 22 and the bottom plate 21 in the lying position is greater than the distance from the bottom plate 21 in the seat position. The plurality of connecting pieces 23 are connected to the bottom plate 21 and the top plate 22, and both ends thereof are pivotally connected to the bottom plate 21 and the top plate 22, respectively. In this embodiment, the plurality of connecting pieces 23 are all shock absorbers, It is used to absorb the vibration generated when the wheelchair is used; each shock absorber includes a cylinder pressing member 231, a shock absorber spring 232 and a limiter 233, and the two ends of the cylinder pressing member 231 of each shock absorber are pivotally connected to the bottom plate 21 respectively And the top plate 22, the shock absorber spring 232 is sleeved on the cylinder member 231 along the axial direction of the cylinder member 231, and the limiting member 233 is movably connected to the cylinder member 231 along the axial direction of the cylinder member 231, And arranged at one end of the shock absorber spring 232, preferably, the limiting member 233 is screwed to the pressing cylinder member 231, and can be connected to the relative position of the pressing cylinder member 231 by the limiting member 233 To limit the installation space of the suspension spring, and adjust the resilience of the suspension spring 232.

The support rod assembly 24 is disposed between the bottom plate 21 and the top plate 22, one end of which is pivotally connected to the bottom plate 21, and the other end is provided with a roller 241 to abut the bottom surface of the top plate 22 to reduce the gap between the top plate 22 and the top plate 22 Friction force makes the support rod assembly 24 slide smoothly on the bottom surface of the top plate 22 when pivoting, and drives the top plate 22 to displace when pivoting; the push rod 25 is provided on the support rod assembly 24 along the first direction On one side, a roller 251 is provided at one end against the support rod assembly 24 to reduce the friction between it and the support rod assembly 24. The push rod 25 is pivotally disposed between the bottom plate 21 and the top plate 22, The distance between the pivot point and the bottom plate 21 is greater than the distance between the pivot point of the support rod assembly 24 and the bottom plate 21, and between the two ends of the support rod assembly 24, the push rod 25 is pushed when pivoting The support rod assembly 24 is pivoted to prop up the top plate 22 to the lying position or return to the seat position. Preferably, please refer to FIG. 1, the other end of the push rod 25 is pivotally connected to an extension The lever 252 can extend the distance from the end of the push rod 25 away from the support rod assembly 24 to the pivot point of the push rod 25 to save the force required to pivot the push rod 25, and when the extension rod 252 is not in use , Can be folded at the back of the chair; in addition, the push rod 25 can be further connected with a clamping device (not shown), so that when the pivot rod 25 is pivoted to the positioning, the clamping device can fix the relative position, and Furthermore, the top plate 22 is fixed and kept in the lying position.

The restricting and blocking lever assembly 26 is disposed between the bottom plate 21 and the top plate 22, and includes a blocking lever 261 and a blocking block 262, the blocking lever 261 is pivotally connected to the top plate 22 at one end, and the other end is provided with a roller 263 against the bottom plate 21 to reduce the friction between it and the bottom plate 21, the stopper 262 is protruding on the top surface of the bottom plate 21, and is located on the side of the stopper bar 261 along the first direction, The range of movement of the blocking lever 261 when pivoting is limited, thereby limiting the range of pivoting of the support rod assembly 24 without exceeding the pivoting critical point.

The seat back assembly 30, with reference to FIGS. 1 and 3, is provided at one end of the seat assembly 20 along the first direction and is connected to the bracket 11 of the base 10, which includes a back plate assembly 31 and a fixing device 32. The back plate assembly 31 includes a support frame 311, a back plate 312, at least one roller 313 and a handle assembly 314. The support frame 311 is pivotally connected to the bracket 11 of the base 10, the back plate 312 and the top plate 22 Pivotally connected and located on the side of the support frame 311 close to the seat assembly 20, the roller 313 is rotatably disposed on the support frame 311 and abuts against the back plate 312 to reduce the back plate 312 and the support The friction force between the frames 311 and withstands the heavy pressure of the user when leaning on the back plate 312, the handle assembly 314 is connected to the support frame 311 and extends away from the back plate 312.

The fixing device 32 is connected to the back plate assembly 31 to limit the fixing position of the back plate assembly 31; in this embodiment, the fixing device 32 includes a limiting plate 321, a clamping member 322, and a first A return spring 323, the limiting plate 321 is connected to the support frame 311 of the back plate assembly 31 and the armrest 14 of the base 10, and a limiting portion 324 is provided at the position of the limiting plate 321 corresponding to the armrest 14 of the base 10 Please refer to FIG. 4, the limiting portion 324 is a slightly L-shaped through slot, including a locking point 324A and an unlocking point 324B, the clamping member 322 is penetrated by the limiting portion 324 of the limiting plate 321 And connected to the armrest 14 of the base 10, when the relative position of the limiting portion 324 of the limiting plate 321 and the clamping member 322 is located at the locking point 324A of the limiting portion 324, the back plate assembly 31 is blocked Cannot be pivoted, and forms a predetermined connection angle with the seat assembly 20 to form a backrest of a wheelchair; when the relative position of the limiting portion 324 of the limiting plate 321 and the clamping member 322 is at the limiting position At the unlocking point 324B of the portion 324, the back plate assembly 31 can pivot relatively to a horizontal level. The first return spring 323 connects the back plate assembly 30 and the bracket 11 to provide a horizontal pulling force for the support frame 311 to pivot after the fixing device 32 is unlocked.

When the present invention is changed from the wheelchair state to the lying state, please refer to FIGS. 1, 4, and 5, first, first, the rocker support 13 of the base 10 is grounded, and the limit of the fixing device 32 is toggled Plate 321, the relative position of the limiting portion 324 of the limiting plate 321 and the locking member 322 is moved from the locking point 324A to the unlocking point 324B, so as to release the locking of the fixing device 32 to the back plate assembly 31, and Hold the handle assembly 314 and pull it down, and pivot the support frame 311 of the back plate assembly 31 to a horizontal level. At this time, the back plate 312 pivots and bears on the roller 313 mounted on the support frame 311;

Please refer to FIG. 6, and then push the push rod 25 downward to pivot, so that the roller 251 of the push rod 25 pushes against the support rod assembly 24 and drives the support rod assembly 24 to pivot, so that the top plate 22 is supported by the When the rod assembly 24 is propped up to the lying position, the blocking rod 261 of the limiting blocking rod assembly 26 will also pivot as the distance between the bottom plate 21 and the top plate 22 changes until the roller 263 of the blocking rod 261 moves along the bottom plate 21 Sliding until it stops against the stopper 263 and cannot continue to advance, which limits the linkage range of the push rod 25 and the support rod assembly 24; at this time, the back plate 312 of the back plate assembly 31 and the top plate 22 are linked to pivot to the horizontal, and Rely on the roller 313; finally fix the relative position of the plunger 25 to complete the conversion action. In the above-mentioned manner, when the wheelchair of the present invention is converted into a lying state, the relative height of the top plate 22 of the seat assembly 20 and the ground can be increased at the same time so that it is on the same plane as the hospital bed, so that the caregiver can easily transfer the patient Translation from the wheelchair of the present invention to the hospital bed, or from the hospital bed to the wheelchair of the present invention.

When it is necessary to switch back from the lying state to the wheelchair state, the pivoting lever 25 is reversed to drive the supporting rod assembly 24 to pivot, and the top plate 22 is moved to the seat position accordingly, and then the back plate assembly 31 is moved upward Pivot to position, and move the relative position of the limiting portion 324 of the limiting plate 321 of the fixing device 32 and the clamping member 322 from the unlocking point 324B to the locking point 324A, fix the back plate assembly 31, and retract Lifting lever support rod 13 completes the conversion.

With reference to FIGS. 7 and 8, the wheelchair of the present invention may further include an auxiliary wheel assembly 40 connected to the bracket 11 of the base 10 and located between the two rear wheels 12, which includes two A support plate 41, four steering wheels 42, a connecting rod 43, a safety plate 44, and a second return spring 45, the two support plates 41 are pivotally connected to the bracket 11 and arranged at intervals, the four steering wheels 42 Two of them are connected to the bottom of each support plate 41 respectively, and each steering wheel 42 can be connected to the support plate 41 with a 360 degree rotation, wherein the pivot point of each support plate 41 is connected to the bottom edge of each steering wheel 42 The distance is greater than the vertical distance between the pivot point of the base 10 bracket 11 and each support plate 41 to the bottom edge of the rear wheel 12, so that the support plate 41 is inclined at an angle as shown in FIG. The rod 43 connects the two supporting plates 41, so that the pivot angle of the two supporting plates 41 can be linked, the safety plate 44 connects the connecting rod 42 and the bracket 11, and is provided with a connecting portion 441 and a connecting piece 442, In this embodiment, the connecting portion 441 is a concave slot, and the connecting member 442 is a direct sale, and is provided at the bracket 11 corresponding to the connecting portion 441. When the connecting portion 441 of the safety plate 44 and the connecting member 442 When interlocking with each other, as shown in FIG. 7, the two support plates 41 are perpendicular to the ground, and each steering wheel 42 is on the ground and supports the bracket 11, so that the two rear wheels 12 are suspended, so that the wheelchair of the present invention can be The steering wheel 42 rotates and moves; the second return spring 45 connects the bracket 11 and the auxiliary wheel assembly 40 to provide a reset pulling force after the safety plate 43 is unlocked.

When the wheelchair of the present invention needs to be steered in a narrow space, the auxiliary wheel assembly 40 can be pushed to turn each supporting plate 41 from being inclined to perpendicular to the ground, allowing each steering wheel 42 to land and support the base 10 while After the two rear wheels 12 are suspended, the connecting portion 441 of the safety plate 44 is clamped on the connecting piece 442 to fix the auxiliary wheel assembly 40. At this time, the steering wheels 42 of the auxiliary wheel assembly 40 can be used to drive the present invention Wheelchairs rotate in a narrow space; when the auxiliary wheel assembly 40 is not used, the locking of the safety plate 44 is released, the support plates 41 are returned to the inclined installation state, and the rear wheel 12 is grounded, which is restored to use The rear wheel 12 moves.

With reference to FIG. 9, the present invention may further be provided with an extension seat 27 on the seat assembly 20. The extension seat 27 may extend along the first direction and be connected to the top plate 22 of the seat assembly 20; When changing to the lying state, the extension seat 27 can be pulled out and supports the patient's feet.

In the seat assembly 20 described above, the support rod assembly 24 can also be pivotally connected to the top plate 22, and the roller 241 can be pushed against the bottom plate 21; the blocking rod 26 of the limiting blocking rod assembly 26 can also be pivotally connected to the The bottom plate 21 is pressed against the top plate 22 by a roller 263, and the stopper 262 is protrudingly provided on the bottom surface of the top plate 22; the limit portion 324 of the limit plate 321 of the fixing device 32 may also be provided corresponding to the back plate The support frame 311 of the component 31, and the clamping member 322 is inserted into the limiting portion 324 of the limiting plate 321 and connected to the supporting frame 311; the connecting piece 442 of the safety plate 44 of the auxiliary wheel assembly 40 can also be Changes in the arrangement of the connecting rod 43 or the support plate 41, etc.

In other embodiments, the back plate 312 of the back plate assembly 31 can also be fixedly disposed on one side of the support frame 311 and directly pivotally connected with the support frame 311; or, the chair back of the wheelchair of the present invention The component 30 may also be fixed and cannot be pivoted; or the auxiliary wheel component 40 may not be added, but only has the function of adjusting the height of the seat and so on.

The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Any person with ordinary knowledge in the technical field of the art, if not departing from the technical features of the present invention, use this The equivalent embodiments of local changes or modifications made by the technical content disclosed in the present invention, and without departing from the technical solution content of the present invention, still belong to the scope of the technical features of the present invention.

10‧‧‧Base 11‧‧‧Bracket 12‧‧‧ Rear wheel 13‧‧‧Crank support 14‧‧‧Handrail 20‧‧‧Seat assembly 21‧‧‧Bottom plate 22‧‧‧Top plate 23‧‧ ‧Connector 231‧‧‧Cylinder part 232‧‧‧Shock spring 233‧‧‧Limiting part 24‧‧‧Support rod assembly 241‧‧‧Roller 25‧‧‧Push rod 251‧‧‧Roller 252‧‧ ‧Extended lever 26‧‧‧Limit stop lever assembly 261‧‧‧Retainer lever 262‧‧‧Block 263‧‧‧Roller 27‧‧‧Extended seat 30‧‧‧Backrest assembly 31‧‧‧Back plate assembly 311‧ ‧‧Support frame 312‧‧‧Back plate 313‧‧‧Roller member 314‧‧‧Handle assembly 32‧‧‧ Fixing device 321‧‧‧ Limit plate 322‧‧‧Clamping member 323‧‧‧First return spring 324‧‧‧ Limiting part 324A‧‧‧Lock point 324B‧‧‧Unlock point 40‧‧‧Assist wheel assembly 41‧‧‧Support plate 42‧‧‧Steering wheel 43‧‧‧Link 44‧‧‧Safety plate 441‧‧‧Connector 442‧‧‧Connector 46‧‧‧Second return spring

FIG. 1 is a partial cross-sectional side view of a preferred embodiment of the present invention. 2 is a partially enlarged schematic view of a seat assembly of a preferred embodiment of the present invention. FIG. 3 is a partially enlarged schematic view of the seat back assembly of the preferred embodiment of the present invention. FIG. 4 is a schematic diagram of the action of the limiting plate of the preferred embodiment of the wheelchair of the present invention. FIG. 5 is a schematic diagram of the action of pivoting the backrest assembly according to the preferred embodiment of the present invention. FIG. 6 is a schematic view of the preferred embodiment of the present invention for propping up the seat assembly to the lying position. 7 is a partially enlarged schematic diagram of the auxiliary wheel assembly supporting the ground according to the preferred embodiment of the present invention. 8 is a partially enlarged schematic view of the general state of the auxiliary wheel assembly according to the preferred embodiment of the present invention. 9 is a side view of another preferred embodiment of the present invention.

10‧‧‧Dock

11‧‧‧Bracket

12‧‧‧Rear wheel

13‧‧‧Rocker support

14‧‧‧Handrail

20‧‧‧Seat assembly

21‧‧‧Bottom plate

22‧‧‧Top board

23‧‧‧Connector

24‧‧‧Support rod assembly

25‧‧‧ betting

252‧‧‧Extension pole

26‧‧‧Limit lever assembly

30‧‧‧Back assembly

31‧‧‧Backplane components

311‧‧‧support frame

312‧‧‧Backboard

313‧‧‧Roller parts

314‧‧‧handle assembly

32‧‧‧Fixture

323‧‧‧First return spring

Claims (10)

A wheelchair with a convertible seat height, which includes: a first direction; a base; a seat assembly connected to the base, which includes a bottom plate provided on the base; and a top plate provided on the base The bottom plate is above and parallel to the bottom plate; a plurality of connectors are connected to the bottom plate and the top plate; a support bar assembly is provided between the bottom plate and the top plate, and one end of the support plate is pivotally connected to the bottom plate or the top plate One, the other end is pushed against the other of the bottom plate or the top plate; and a push rod is provided on one side of the support rod assembly along the first direction, and one end thereof is pressed against the support rod assembly and pivotally connected to Between the bottom plate and the top plate, and its pivot point is located between the two ends of the support rod assembly, when the push rod pivots, it pushes against the support rod assembly to pivot to drive the displacement of the top plate, and changes the top plate and the bottom plate The relative distance between them; and a seat back assembly connected to the base and located on a side of the seat assembly along the first direction. The wheelchair with a convertible seat height according to claim 1, wherein the seat assembly further includes a limiting stop rod assembly, which is disposed between the bottom plate and the top plate, and includes a blocking rod and a stop block, the One end of the blocking rod is pivotally connected to one of the bottom plate or the top plate, and the other end is pushed against the other of the bottom plate or the top plate. The blocking block is protruded on the opposite side of the pivoting end of the blocking rod and is located on the blocking rod The side of the pivot direction. The wheelchair with a convertible seat height according to claim 2, further comprising an auxiliary wheel assembly connected to the base, which includes two support plates, respectively pivotally connected to the base at intervals; plural steering The wheels are divided into two groups and connected to the bottom of each support plate respectively. Each steering wheel can be rotated 360 degrees and connected to its corresponding support plate; a connecting rod connects the two support plates; and a safety plate is detachably connected The auxiliary wheel assembly and the base are provided with a connecting part and a connecting piece which are detachably engaged. The wheelchair with a convertible seat height according to any one of claims 1 to 3, wherein the connecting member of the seat assembly is a shock absorber. The wheelchair with a convertible seat height according to claim 4, wherein each shock absorber respectively includes a pressure cylinder member, a suspension spring and a stopper, the suspension spring is sleeved along the axial direction of the pressure cylinder member The limiting member is connected to the pressing member movably along the axial direction of the pressing member, and is provided at one end of the shock absorber spring. The wheelchair with a convertible seat height according to claim 5, wherein the seat back assembly includes a back plate assembly pivotally connected to the base; and a fixing device connected to the back plate assembly including a limit A bit board, connected to the back plate assembly and the base, is provided with a limit part, and the limit part has a locking point and an unlock point; and a clamping piece connected to the limit part of the limit board . The wheelchair with a convertible seat height according to claim 6, wherein the back plate assembly includes a support frame pivotally connected to the base; a back plate pivotally connected to the top plate of the seat assembly; and a The roller member is rotatably provided on the support frame and pressed against the back plate. The wheelchair with a convertible seat height according to claim 7, wherein the seat assembly further includes an extension seat, which is extendably connected to the seat assembly in the first direction. The wheelchair with a convertible seat height according to claim 1, further comprising an auxiliary wheel assembly connected to the base, which includes two supporting plates respectively pivotally connected to the base at intervals; plural steering The wheels are divided into two groups and connected to the bottom of each support plate respectively. Each steering wheel can be rotated 360 degrees and connected to its corresponding support plate; a connecting rod connects the two support plates; and a safety plate is detachably connected The auxiliary wheel assembly and the base are provided with a connecting part and a connecting piece which are detachably engaged. 2. The wheelchair with a convertible seat height according to any one of 2, 3, 9 wherein the seat back assembly includes a back panel assembly pivotally connected to the base; and a fixing device connected to the back panel assembly , Which includes a limit plate connected to the backplane assembly and the base, which is provided with a limit portion, and the limit portion has a locking point and an unlocking point; and a card member connected to the limit position The limit part of the board.

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