Wheelchair

Abstract

The utility model discloses a wheelchair which comprises a wheelchair frame, two supporting rods are connected to the rear side of the wheelchair frame in the left-right direction at intervals, and a flexible backrest is connected between the two supporting rods. The storage box is connected between the two supporting rods, a hole is formed in the front side of the storage box, an adjusting mechanism is arranged in the storage box, the adjusting mechanism is provided with an ejector rod capable of being close to or away from the flexible backrest, and the ejector rod can extend out of the hole and abut against the flexible backrest or retract into the storage box from the hole. According to the utility model, the supporting force of the flexible backrest to the waist position of a user can be adjusted according to the requirements of different users, and the storage box can be used for covering and protecting the adjusting mechanism, reducing exposure, storing objects, enriching the use functions of the backrest and improving the overall practicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to a chair, especially a wheelchair. BACKGROUND

[0002] The medical wheelchair is composed of wheelchair frame, seat, wheel, footboard and other parts. For the manual wheelchair, it mainly depends on the manual operation of the patient or the caregiver. The patient can drive the wheelchair forward, backward or turn by pushing the hand wheel ring. The back side of the wheelchair is generally equipped with a backrest. In order to make the backrest support the waist of the patient better, the structure for adjusting the support is added to the back side of the backrest. The degree of protrusion of the backrest is changed to adjust the strength of the waist support. However, the structure for adjusting the support of the backrest is directly exposed, which affects the appearance of the wheelchair. In addition, the backrest has few functions. Therefore, there is an urgent need for a wheelchair with more diverse functions of the backrest. SUMMARY

[0003] The utility model aims at providing a wheelchair to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] The solution to the technical problem of the utility model is as follows:

[0005] A wheelchair comprises a wheelchair frame, two support rods connected to the back side in the left-right direction, a flexible backrest connected between the two support rods, a storage box connected between the two support rods, a hole in the front side of the storage box, an adjusting mechanism in the storage box, a top rod of the adjusting mechanism capable of approaching or moving away from the flexible backrest, the top rod capable of extending out of the hole and pressing on the flexible backrest or being retracted into the storage box.

[0006] The technical scheme has at least the following beneficial effects: two supporting rods are connected to the rear side of the wheelchair frame in the left-right direction, the two supporting rods provide fixed support for the flexible backrest, the flexible backrest can provide certain flexible deformation when pressed, thereby better fitting the user's back and providing good support, a storage box is arranged at the rear side of the backrest between the two supporting rods, the storage box itself can be used to store items, and an adjusting mechanism for adjusting the support effect of the backrest is arranged inside the storage box, the adjusting mechanism is protected by the storage box itself and is less exposed, during use, the adjusting mechanism is adjusted according to the support requirements of the user in the backrest position, so that the top rod is close to or away from the flexible backrest, when the top rod is close to the flexible backrest, the forward pressure of the flexible backrest is increased, thereby strengthening the support to the user's back position, when the top rod is away from the flexible backrest, the support to the user's back position is reduced, in this way, the support force of the flexible backrest to the user's waist position can be adjusted according to the requirements of different users, the adjusting mechanism is protected by the storage box and is less exposed, and the storage box can also be used for storage, thereby enriching the use function of the backrest and improving the overall practicability.

[0007] As a further improvement of the above technical scheme, the adjusting mechanism comprises a worm, a worm wheel and a rotating rod, the worm is rotatably connected to the storage box along the front-rear direction, the rotating rod is rotatably connected to the rear side of the storage box along the left-right direction, the worm wheel is connected to one end of the rotating rod, the worm wheel and the worm are in meshing engagement, the rear side of the storage box is provided with a through slot extending in the up-down direction, and the rear end of the top rod passes through the through slot and is connected to the rotating rod. When it is necessary to adjust the support force of the top rod to the flexible backrest, the worm is rotated, the worm wheel is rotated together with the worm due to the meshing engagement between the worm wheel and the worm, the top rod is rotated by the rotating rod, the top rod is close to or away from the flexible backrest in a rotating manner, the support force to the flexible backrest is changed, and the worm wheel and the worm are self-locked, so that the top rod is quickly positioned after adjustment, and the operation is convenient.

[0008] As a further improvement of the above technical scheme, the storage box comprises a main shell and a side shell, the main shell is connected between the two supporting rods, the front side of the main shell is provided with the hole, the outer side of the main shell is surrounded by a mounting groove, the side shell is connected to the main shell and covers the mounting groove, the through slot is arranged at the rear side of the main shell, and the worm, the worm wheel and the rotating rod are connected in the mounting groove. The space in the main shell is formed to accommodate items, the outer side of the main shell is surrounded by a mounting groove for mounting the adjusting mechanism, the worm, the worm wheel and the rotating rod are all arranged in the mounting groove, the rotating rod is arranged in the main shell and connected to the rotating rod in the mounting groove through the through slot, the space in the storage box is divided into a space for storage and a space for mounting the adjusting mechanism, the adjusting mechanism is better protected, and the transmission stability is improved.

[0009] As a further improvement of the above technical solution, the main shell and the side shell are detachably connected. When the adjusting mechanism needs to be maintained or replaced, the side shell can be detached from the main shell, thereby further improving the convenience of operation.

[0010] As a further improvement of the above technical solution, the front end of the worm passes through the side shell and is connected with a hand wheel. Since the front end of the worm passes through the side shell, when the top rod needs to be adjusted, the hand wheel on the adjusting worm can be directly turned from the front side of the side shell. In this way, the user can directly adjust the supporting force of the top rod while sitting on the wheelchair frame, making the adjustment more convenient and efficient and improving the user experience.

[0011] As a further improvement of the above technical solution, a scale value is provided on the hand wheel. The scale value on the hand wheel can correspond to the supporting force of the top rod against the flexible backrest. In this way, the amount of adjustment of the top rod can be directly observed during use, thereby further improving the convenience and efficiency of adjusting the top rod.

[0012] As a further improvement of the above technical solution, a top block is detachably connected to the front end of the top rod. When the top rod presses the flexible backrest forward, the top block contacts the flexible backrest, thereby supporting the flexible backrest. In use, different shapes of top blocks can be replaced according to different use requirements, and the top block can better adapt to the shape of the back of different users, thereby further improving the comfort of use.

[0013] As a further improvement of the above technical solution, the top rod comprises a connecting segment and a pressing segment connected to each other, the connecting segment is connected to the rotating rod and extends downward and forward, the pressing segment extends forward, and the top block is connected to the front end of the pressing segment. The connecting segment and the pressing segment form a hook-shaped structure. When the supporting force of the flexible backrest needs to be adjusted, the adjustment of the pressing range of the top block against the flexible backrest can be improved, thereby further improving the user experience.

[0014] As a further improvement of the above technical solution, an elastic layer is connected to the position of the hole of the storage box, and the top rod presses the elastic layer and presses the flexible backrest forward. The elastic layer can cover the position of the hole of the storage box, preventing the items stored in the storage box from falling from the hole position. The elastic layer itself can be elastically deformed, and when the top rod presses the elastic layer, the elastic layer can be pressed tightly and elastically deformed forward, and the pressure of the top rod on the elastic layer can be transmitted to the flexible backrest, providing forward supporting force to the flexible backrest.

[0015] As further improvement of the above technical scheme, two of the supporting rods are respectively connected with a waistband, and the ends of the two waistbands away from the supporting rods are detachably connected with each other. When a user sits on the wheelchair frame, the two waistbands are wrapped outside the waist of the user, and the two waistbands are connected with each other, so as to facilitate positioning of the user on the wheelchair frame, and the user is not easy to slide off the wheelchair frame. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly described below. Obviously, the described drawings are only some of the embodiments of the present application, not all the embodiments, and the person skilled in the art can obtain other design schemes and drawings according to these drawings without creative labor.

[0017] Figure 1 is the overall first perspective view of the present application.

[0018] Figure 2 is the internal plan view of the storage box of the present application.

[0019] Figure 3 is the overall second perspective view of the present application.

[0020] In the drawings: 100-wheelchair frame, 110-supporting rod, 120-flexible backrest, 130-waistband, 200-storage box, 210-top rod, 220-worm, 221-hand wheel, 230-worm wheel, 240-rotation rod, 250-top block, 260-elastic layer. DETAILED DESCRIPTION

[0021] The embodiments of the present application will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0022] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0023] In the description of the utility model, if several meanings are one or more, the meaning of multiple is two or more, greater than, less than, exceed and the like are understood as not including the number, above, below, within and the like are understood as including the number. If the first, second are described, it is only used for distinguishing technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0024] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installation, connection should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0025] Refer to Figure 1 A wheelchair, including wheelchair frame 100 and storage box 200, wherein the rear side of wheelchair frame 100 is connected with two supporting rods 110 in left and right direction, two supporting rods 110 are connected with flexible backrest 120, flexible backrest 120 can select elastic cloth, can provide support and have certain elastic deformation effect, wheelchair frame 100 is a support frame, handrails are connected on both sides of wheelchair frame 100, rear wheels are rotatably connected on both sides of wheelchair frame 100 at rear position, front wheels are rotatably connected on both sides of wheelchair frame 100 at front position, pedal is arranged on the front side of wheelchair frame 100, handle is formed by bending the top end of two supporting rods 110 of wheelchair frame 100 rearward, seat plate for user is also arranged on wheelchair frame 100;Storage box 200 is connected between two supporting rods 110, the front side of storage box 200 is provided with an aperture, adjusting mechanism is arranged in storage box 200, adjusting mechanism has top rod 210 that can approach or away from flexible backrest 120, when top rod 210 approaches flexible backrest 120, top rod 210 can extend from aperture and press on flexible backrest 120, when top rod 210 is away from flexible backrest 120, top rod 210 is received in storage box 200 from aperture.

[0026] As can be seen from the above, two support rods 110 are connected at intervals along the left and right directions on the rear side of the wheelchair frame 100, and the two support rods 110 are used to provide fixed support for the flexible backrest 120. The flexible backrest 120 can provide a certain degree of flexible deformation when under pressure, so as to better fit the user's back and provide good support. A storage box 200 is provided at the rear side of the two support rods 110 and the backrest. The storage box 200 itself can be used to store items, and an adjustment mechanism for adjusting the backrest support effect is also installed inside the storage box 200. The storage box 200 itself can provide protection for the adjustment mechanism and reduce exposure. When in use, the user can adjust the backrest according to the user's position. The adjustment mechanism is adjusted according to the support requirements of the backrest position, so that the top rod 210 is close to or away from the flexible backrest 120. When the top rod 210 is close to the flexible backrest 120, it can press the flexible backrest 120 forward, thereby strengthening the support for the user's back position. When the top rod 210 is away from the flexible backrest 120, the support for the user's back position can be reduced. In this way, the support force of the flexible backrest 120 on the user's waist position can be adjusted according to the needs of different users, and the storage box 200 can be used to cover and protect the adjustment mechanism to reduce exposure, and it can also be used for storage, enriching the use function of the backrest and improving overall practicality.

[0027] The adjustment mechanism is installed in the storage box 200 to form a push rod 210 that can move closer to or away from the hole. There are many structural forms. For example, an electric screw is directly used as a driving source, and the electric screw drives the push rod 210 to move closer to or away from the flexible backrest 120. When it is necessary to use a manual form to drive the push rod 210 to move, such as Figure 2 As shown, the adjustment mechanism includes a worm 220, a worm wheel 230 and a rotating rod 240. The worm 220 is connected to the storage box 200 by rotating along the axis in the front-to-back direction, and the rotating rod 240 is connected to the rear side of the storage box 200 by rotating along the axis in the left-to-right direction. The worm wheel 230 is connected to one end of the rotating rod 240, and the worm wheel 230 and the worm 220 are engaged with each other. A through groove extending in the up-down direction is provided on the rear side of the storage box 200, and the rear end of the top rod 210 passes through the through groove and is connected to the rotating rod 240. When it is necessary to adjust the supporting force of the push rod 210 on the flexible backrest 120, the worm 220 is rotated. Since the worm wheel 230 and the worm 220 are engaged with each other, the worm wheel 230 will rotate together with the worm 220, and drive the push rod 210 to rotate through the rotating rod 240, so that the push rod 210 is rotated to move closer to or away from the flexible backrest 120, thereby changing the supporting force on the flexible backrest 120. The self-locking of the worm wheel 230 and the worm 220 can be used to quickly position the push rod 210 after adjustment, which is convenient to operate.

[0028] The storage box 200 can be a one-piece box structure. When the articles are directly placed in the storage box 200, interference with the transmission structure in the adjusting mechanism is easy to occur. In order to better separate the storage articles and the transmission structure, in the embodiment, the storage box 200 includes a main shell and a side shell. The main shell is connected between the two support rods 110. The front side of the main shell is provided with the hole. The outer side of the main shell is provided with a mounting groove. The side shell is connected to the main shell and covers the mounting groove. The through groove is provided on the rear side of the main shell. The worm 220, the worm gear 230, and the rotating rod 240 are respectively connected in the mounting groove. The space for storing articles is formed in the main shell. The mounting groove for mounting the adjusting mechanism is provided around the outer side of the main shell. The worm 220, the worm gear 230, and the rotating rod 240 are all mounted in the mounting groove. The rotating rod 240 is mounted in the main shell and connected to the rotating rod 240 in the mounting groove through the through groove. In this way, the space in the storage box 200 is divided into a space for storage and a space for mounting the adjusting mechanism. The adjusting mechanism can be better protected, and the transmission stability is improved.

[0029] After a long time of use, the adjusting mechanism needs to be maintained or maintained. In order to facilitate the maintenance of the adjusting mechanism, in the embodiment, the main shell and the side shell are detachably connected. For example, the main shell and the side shell can be connected to each other by buckles or connected to each other by screws. When the adjusting mechanism needs to be maintained or replaced, the side shell can be detached from the main shell, thereby further improving the convenience of operation.

[0030] When the supporting force of the top rod 210 needs to be adjusted, the worm 220 can be directly rotated in the storage box 200. In order to facilitate operation, the worm 220 can protrude from the side shell. When the worm 220 needs to be rotated, force is directly applied to the part of the worm 220 protruding from the side shell. For example, the rear end of the worm 220 is inserted into the side shell. At this time, other personnel need to assist in rotating at the rear side of the wheelchair frame 100. Therefore, in order to further improve the convenience of operation, in the embodiment, as shown in Figure 3 the front end of the worm 220 is inserted into the side shell and connected with a hand wheel 221. Since the front end of the worm 220 is inserted into the side shell, when the top rod 210 needs to be adjusted, the hand wheel 221 on the adjusting worm 220 is directly rotated from the front side of the side shell. In this way, the user sitting on the wheelchair frame 100 can directly adjust the supporting force of the top rod 210. The adjustment is more convenient and fast, and the use experience is improved.

[0031] In some embodiments, the hand wheel 221 is provided with a scale value, and in actual application, the corresponding numerical value of the forward movement amount of the top rod 210 when the hand wheel 221 is rotated is set, and the corresponding numerical value is marked on the hand wheel 221 as a scale value. The scale value on the hand wheel 221 can correspond to the supporting force of the top rod 210 against the flexible backrest 120. In this way, when adjusting the use, the adjustment amount of the top rod 210 can be directly observed, thereby further improving the convenience and efficiency of adjusting the top rod 210.

[0032] In the above embodiment, the front end of the top rod 210 can directly press against the flexible backrest 120 to provide supporting force to the user's waist. In order to increase the contact area of the top rod 210 against the flexible backrest 120 and improve the comfort of the support, in this embodiment, the front end of the top rod 210 is detachably connected with a top block 250. In actual application, the front side of the top block 250 can be designed as a circular arc surface suitable for the shape of the user's back to improve the fit to the waist. The top block 250 can be connected to the front end of the top rod 210 by clamping, screwing or other means to improve the convenience of disassembly and assembly. When the top rod 210 presses forward against the flexible backrest 120, the top block 250 contacts the flexible backrest 120 to support the flexible backrest 120. In use, different shapes of top blocks 250 can be replaced according to different use requirements, and the top block 250 can better adapt to the shape of the back of different users, thereby further improving the use comfort.

[0033] The top rod 210 can be a straight rod. In order to improve the change amount of the top rod 210 when pressing against the flexible backrest 120, in this embodiment, the top rod 210 includes a connecting segment and a pressing segment connected to each other. The connecting segment is connected to the rotating rod 240 and extends downward and forward. The pressing segment extends forward, and the top block 250 is connected to the front end of the pressing segment. The connecting segment and the pressing segment form a hook-shaped structure. When the supporting force of the flexible backrest 120 needs to be adjusted, the adjustment of the force exerted by the top block 250 against the flexible backrest 120 can be improved, thereby further improving the use experience.

[0034] In order to improve the storage effect of the storage box 200 on the articles, in the embodiment, the storage box 200 is connected with an elastic layer 260 at the position of the hole, for example, the elastic layer 260 can be made of silica gel or other materials that can produce elastic deformation, the top rod 210 is pressed against the elastic layer 260 and presses the flexible backrest 120 forward. The elastic layer 260 can cover the position of the storage box 200 at the hole, so as to avoid the articles stored in the storage box 200 from falling from the hole position, and the elastic layer 260 itself can be elastically deformed, when the top rod 210 is pressed against the elastic layer 260, the elastic layer 260 can be pressed forward and elastically deformed, and the pressure of the top rod 210 on the elastic layer 260 is transmitted to the flexible backrest 120, so as to provide a forward supporting force for the flexible backrest 120.

[0035] In some embodiments, two of the supporting rods 110 are respectively connected with waist belts 130, and the ends of the two waist belts 130 away from the supporting rods 110 are detachably connected with each other, for example, buckles and clamping grooves are arranged at the ends of the two waist belts 130 respectively, and the two waist belts 130 are connected with each other through the buckles and the clamping grooves. When a user sits on the wheelchair frame 100, the two waist belts 130 are arranged around the outside of the waist of the user, and the two waist belts 130 are connected with each other, so as to facilitate the positioning of the user on the wheelchair frame 100, and the user is not easy to slide off the wheelchair frame 100.

[0036] The preferred embodiments of the present application are described in detail above, but the present application is not limited to the above-mentioned embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application. These equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A wheelchair, characterized by: The utility model provides a wheelchair frame (100) is provided with two support rods (110) which are connected to the rear side along the left and right directions, and a flexible backrest (120) is connected between the two support rods (110). The utility model provides a wheelchair frame (100) is provided with a storage box (200) which is connected between the two support rods (110), and the front side of the storage box (200) is provided with an opening, and an adjusting mechanism is arranged in the storage box (200), the adjusting mechanism has a top rod (210) which can be close to or away from the flexible backrest (120), and the top rod (210) can be extended out of the opening and pressed on the flexible backrest (120) or retracted into the storage box (200) from the opening. The adjusting mechanism comprises a worm (220), a worm wheel (230) and a rotating rod (240), the worm (220) is rotatably connected to the storage box (200) along the axis of the front and back directions, the rotating rod (240) is rotatably connected to the rear side of the storage box (200) along the axis of the left and right directions, the worm wheel (230) is connected to one end of the rotating rod (240), the worm wheel (230) and the worm (220) are in meshing engagement, the rear side of the storage box (200) is provided with a through groove which extends along the up and down directions, and the rear end of the top rod (210) penetrates through the through groove and is connected to the rotating rod (240).

2. A wheelchair according to claim 1, characterised in that: The storage box (200) comprises a main shell and a side shell, the main shell is connected between the two support rods (110), the front side of the main shell is provided with the opening, the outer side of the main shell is provided with a mounting groove, the side shell is connected to the main shell and covers the mounting groove, the through groove is arranged on the rear side of the main shell, and the worm (220), the worm wheel (230) and the rotating rod (240) are connected in the mounting groove.

3. A wheelchair according to claim 2, characterised in that: The main shell and the side shell are detachably connected.

4. A wheelchair according to claim 3, characterised in that: The front end of the worm (220) penetrates through the side shell and is connected with a hand wheel (221).

5. A wheelchair according to claim 4, characterised in that: A scale value is arranged on the hand wheel (221).

6. A wheelchair according to claim 5, characterised in that: The front end of the top rod (210) is detachably connected with a top block (250).

7. The wheelchair of claim 2, wherein: The top rod (210) comprises a connecting section and a pressing section which are connected to each other, the connecting section is connected to the rotating rod (240) and extends downward and forward, the pressing section extends forward, and the top block (250) is connected to the front end of the pressing section.

8. A wheelchair according to claim 7, characterised in that: An elastic layer (260) is connected to the position of the opening of the storage box (200), the top rod (210) is pressed against the elastic layer (260) and presses the flexible backrest (120) forward.

9. The wheelchair of claim 1, wherein: Waist belts (130) are connected to the two support rods (110) respectively, and the ends, away from the support rods (110), of the two waist belts (130) are detachably connected to each other.

10. The wheelchair of claim 1, wherein: ​

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