Multifunctional wheelchair with armrest storage structure

Abstract

The utility model relates to a multifunctional wheelchair with a handrail storage structure, which comprises a main frame assembly and handrail frame components connected to the left side and the right side of the main frame assembly, each handrail frame component comprises a fixing frame and a handrail frame, and the handrail frame is hinged to the fixing frame in a turnover mode close to the outer side space. A spring bolt structure capable of elastically sliding is arranged on the armrest frame, one end of the spring bolt structure is fixedly connected with a pull handle, the other end of the spring bolt structure extends out of or retracts into the armrest frame along with the action of the pull handle, a lock hole corresponding to the spring bolt structure is formed in the fixing frame, and the spring bolt structure is elastically inserted into the lock hole so as to lock the armrest frame in an unfolded state; the armrest frame of the multifunctional wheelchair can be turned over and folded up and down, the lock body is arranged, the armrest frame can be turned over to be stored after being unlocked, and therefore the situation that the armrest frame occupies space when not used is avoided, the wheelchair can be unfolded to be in a bed body shape, and the armrest frame can be used as a guardrail at the same time.

Description

Technical Field

[0001] The utility model relates to the field of wheelchairs, in particular to a multifunctional wheelchair with an armrest storage structure. Background Art

[0002] At present, there are armrests on both sides of the wheelchair, which can support the user's arms and play a role in protecting the user. Most of the current armrests are fixedly arranged. The user can only get on and off the wheelchair from the front, and the armrests can only be folded after the whole wheelchair is folded; however, with the development of technology, some wheelchairs can be deformed into a bed board for the user to lie down. As shown in a hidden wheelchair armrest device with the patent number CN202321729458.1 in Chinese patent literature, its armrest is connected to the backrest and flips up and down along a vertical plane when folded. However, when the armrest swings downward, the armrest is easy to slap on the user's arm. Therefore, the user can only be reminded to avoid it when the armrest swings downward. But for the user who is already disabled, it may increase their burden. Moreover, when the wheelchair is used as a bed board, the position where the armrest is located is not suitable to be used as a guardrail. Therefore, in order to avoid the disadvantages existing in the prior art, it is necessary to improve the prior art. Summary of the Invention

[0003] The purpose of the utility model is to solve the above existing problems and provide a multifunctional wheelchair with an armrest storage structure that is simple and reasonable in structure.

[0004] The multifunctional wheelchair with an armrest storage structure includes a main frame assembly and armrest frame assemblies connected to the left and right sides of the main frame assembly. The armrest frame assembly includes a fixed frame and an armrest frame. The outer space of the armrest frame is hinged to the fixed frame in a flip manner. An elastic sliding lock tongue structure is arranged on the armrest frame. One end of the lock tongue structure is fixedly connected with a pull handle, and the other end extends or retracts into or out of the armrest frame following the movement of the pull handle. A lock hole is formed in the fixed frame corresponding to the lock tongue structure, and the lock tongue structure is elastically inserted into the lock hole to lock the armrest frame in the unfolded state.

[0005] The purpose of the utility model can also be solved by adopting the following technical measures:

[0006] As a more specific solution, the lock tongue structure includes a guide sleeve, a pull rod and a spring. The guide sleeve is fixed inside the armrest frame. The pull rod slides linearly in the guide sleeve. The spring abuts between the guide sleeve and the pull rod. One end of the pull rod is connected with the pull handle, and the other end elastically extends or retracts through the spring.

[0007] As a further solution, an anti-sway rod extends from the pull handle. The anti-sway rod is arranged on one side of the pull rod and is arranged at intervals before and after the pull rod. A anti-sway hole that slidably cooperates with the anti-sway rod is correspondingly opened on the armrest frame.

[0008] As a further solution, a first limiting member is arranged on the fixed frame. When the armrest frame is in the unfolded state, the inner side of the armrest frame abuts against the first limiting member.

[0009] As a further solution, a second limiting member is arranged on the fixed frame. When the armrest frame is in the stored state, the outer side of the armrest frame abuts against the second limiting member.

[0010] As a further solution, a grip is arranged on the armrest frame. The grip is in the same extending direction as the pull handle and is placed on the upper side of the pull handle. When the pull handle abuts against the grip, at least the other end of the pull rod is pulled out from the lock hole.

[0011] As a further solution, the pull handle is in the shape of an umbrella handle, which includes a handle part and an umbrella handle bent part. The handle part and the umbrella handle bent part are hidden in the vertical facade of the armrest frame; one end of the pull rod is connected to the handle part, and the umbrella handle bent part is used as a grip and is placed on the upper side of the handle part and is arranged at intervals with the grip.

[0012] As a further solution, the armrest frame at least includes a pair of armrest vertical pipes. An armrest bent pipe and an armrest cross pipe are respectively connected between the top and the middle part of the pair of armrest vertical pipes. The lock tongue structure and the pull handle are movably connected to the armrest cross pipe. The armrest bent pipe is in an "e" shape structure, and its tail is inclined and forms a grip; an armrest pad is arranged on the armrest bent pipe.

[0013] As a further solution, the pull rod includes a guide rod. The outer end of the guide rod is connected to the pull handle, and a plug rod is arranged at the inner end thereof. A guide hole that slidably cooperates with the guide rod in a straight line is opened on the top wall of the guide sleeve. The plug rod slidably cooperates with the guide sleeve in a straight line. A spring is sleeved outside the guide rod and abuts between the top wall of the guide sleeve and the plug rod.

[0014] As a further solution, the main frame assembly includes a seat frame. A back frame is hinged to the rear side of the seat frame. A foot support bracket is hinged to the front side of the seat frame. A footrest frame is hinged to the front side of the foot support bracket. By flipping the back frame and the foot support bracket relative to the seat frame and flipping the footrest frame relative to the foot support bracket, the back frame, the seat frame, the foot support bracket and the footrest frame are flattened into a bed shape.

[0015] The beneficial effects of the present utility model are as follows:

[0016] The multifunctional wheelchair with an armrest storage structure of the present utility model. The armrest frame of this multifunctional wheelchair can be turned up and down for folding. When switching from the storage state to the unfolded state, the armrest frame turns from the outside to the inside, realizing a gradually clamping action, which can avoid the lower swing of the armrest frame hitting the user's body and causing injury;

[0017] And the armrest frame is provided with a lock body. After unlocking, the armrest frame can be turned down for storage, thus avoiding the armrest frame occupying space when not in use. When the wheelchair can be unfolded into a bed shape, the armrest frames are always located on the left and right sides of the cushion position and can be used as guardrails at the same time, with the best protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the wheelchair in the present utility model.

[0019] Figure 2 It is a schematic structural diagram of the armrest frame assembly in the present utility model.

[0020] Figure 3 is Figure 2 The enlarged structural diagram at position A in

[0021] Figure 4 It is a schematic structural diagram of the fixing frame in the present utility model.

[0022] Figure 5 It is a schematic structural diagram of the unfolded state of the armrest frame in the present utility model.

[0023] Figure 6 It is a schematic structural diagram of the storage state of the armrest frame in the present utility model.

[0024] Figure 7 It is a schematic structural diagram of the main frame assembly in the present utility model.

[0025] Figure 8 It is a schematic structural diagram of the flattened state of the main frame assembly in the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0027] Such as Figures 1 to 6As shown in the figure, a multifunctional wheelchair with an armrest storage structure includes a main frame assembly 1 and armrest frame assemblies 2 connected to the left and right sides of the main frame assembly 1. The armrest frame assembly 2 includes a fixed frame 3 and an armrest frame 4. The armrest frame 4 is hinged to the fixed frame 3 by flipping in the outer space. An elastic sliding lock tongue structure 5 is provided on the armrest frame 4. One end of the lock tongue structure 5 is fixedly connected to a pull handle 6, and the other end extends or retracts into or out of the armrest frame 4 following the movement of the pull handle 6. A lock hole 301 is provided on the fixed frame 3 corresponding to the lock tongue structure 5. The lock tongue structure 5 is elastically inserted into the lock hole 301 to lock the armrest frame 4 in the unfolded state.

[0028] The armrest frame 4 of this multifunctional wheelchair can be flipped up and down for folding. When switching from the storage state to the unfolded state, the armrest frame 4 flips from the outside to the inside, realizing a gradually clamping action, which can avoid the armrest frame 4 swinging down and hitting the user's body, causing harm.

[0029] Moreover, the armrest frame 4 is provided with a lock body. After unlocking, the armrest frame 4 can be flipped down for storage, thus avoiding the armrest frame 4 occupying space when not in use. When the wheelchair can be unfolded into a bed shape, the armrest frames are always located on the left and right sides of the cushion position and can be used as guardrails at the same time, with the best protection effect.

[0030] The lock tongue structure 5 includes a guide sleeve 51, a pull rod 52 and a spring 53. The guide sleeve 51 is fixed inside the armrest frame 4. The pull rod 52 slides linearly in the guide sleeve 51. The spring 53 abuts between the guide sleeve 51 and the pull rod 52. One end of the pull rod 52 is connected to the pull handle 6, and the other end elastically extends or retracts through the spring 53.

[0031] The operating principle of the above structure:

[0032] When the armrest frame 4 is switched from the storage state to the unfolded state, the other end of the pull rod 52 will extend and be inserted into the lock hole 301 under the elastic potential energy of the spring 53, thus locking the unfolded state of the armrest frame 4. When the armrest frame 4 needs to be stored, the user only needs to pull the pull handle 6 upwards by hand, driving the pull rod 52 to be pulled out of the lock hole 301 and retracted into the guide sleeve 51. After unlocking the armrest frame 4, the armrest frame 4 is flipped again until it returns to the position in the storage state.

[0033] An anti-swing rod 61 extends from the pull handle 6. The anti-swing rod 61 is arranged on one side of the pull rod 52 and is spaced from the pull rod 52 front and back. A anti-swing hole 401 that slidably cooperates with the anti-swing rod 61 is correspondingly provided on the armrest frame 4.

[0034] When the pull handle 6 is connected to the fixed frame 3 only by the pull rod 52, the pull handle 6 may rotate axially around the pull rod 52. By the cooperation of the anti-sway rod 61 and the anti-sway hole 401, the pull handle 6 can be limited to the same position and play a certain guiding role.

[0035] A first limiting member is provided on the fixed frame 3. When the armrest frame 4 is in the unfolded state, the inner side of the armrest frame 4 abuts against the first limiting member. In this embodiment, connecting plates 31 for hinging with the armrest frame 4 are provided on both sides of the fixed frame 3. The first limiting member includes limiting blocks 81 provided on the outer sides of the two connecting plates 31, and the limiting blocks 81 are located above the hinge shaft.

[0036] A second limiting member is provided on the fixed frame 3. When the armrest frame 4 is in the stored state, the outer side of the armrest frame 4 abuts against the second limiting member. The second limiting member includes limiting shafts 82 provided on the outer sides of the two connecting plates 31, and the limiting shafts 82 are located below the hinge shaft.

[0037] A grip 41 is provided on the armrest frame 4. The grip 41 is in the same extending direction as the pull handle 6 and is placed above the pull handle 6. When the pull handle 6 abuts against the grip 41, the other end of the pull rod 52 is at least pulled out from the lock hole 301.

[0038] When unlocking by pulling the pull handle 6, the user can first hold the grip 41 with a single finger and then use the other fingers to pull the pull handle 6 upward. This structure eliminates the action of lifting the arm, and the pull handle 6 can be pulled only by the force of the palm, making it easier for the hand to exert force, and allowing users with weaker physical strength to operate by themselves. And the grip 41 plays a limiting role to prevent the pull handle 6 from being lifted excessively and avoid damage to the lock tongue structure 5 caused by collision.

[0039] The pull handle 6 is in the shape of an umbrella handle, which includes a handle portion 62 and an umbrella handle bent portion 63. The handle portion 62 and the umbrella handle bent portion 63 are hidden in the vertical plane of the armrest frame 4. One end of the pull rod 52 is connected to the handle portion 62. The umbrella handle bent portion 63 serves as a grip and is placed above the handle portion 62 and is spaced from the grip 41. When the user holds the grip 41, this structure allows the user to hold the umbrella handle bent portion 63 smoothly, and the pull handle 6 is flush with the armrest frame 4, keeping the armrest frame 4 compact and the pull handle 6 not protruding.

[0040] The armrest frame 4 at least includes a pair of armrest vertical pipes 42. An armrest bent pipe 43 and an armrest cross pipe 44 are respectively connected between the top and the middle of the pair of armrest vertical pipes 42. The lock tongue structure 5 and the pull handle 6 are movably connected to the armrest cross pipe 44. The armrest bent pipe 43 is in an "e" shape structure, and its tail is inclined and forms the grip 41.

[0041] The inclined grip 41 can adapt to the angle of the user's hand, improving comfort. Moreover, the armrest frame 4 composed of the armrest riser 42, the armrest cross tube 44, and the armrest elbow tube 43 has a large protective area and good protection effect when used as a guardrail.

[0042] An armrest pad 7 is provided on the armrest elbow tube 43; the elastic armrest pad 7 can improve the comfort of the armrest frame 4.

[0043] The pull rod 52 includes a guide rod 521. The outer end of the guide rod 521 is connected to the pull handle 6, and a latch pin rod 522 is provided at its inner end. A guide hole 511 that linearly slides and cooperates with the guide rod 521 is opened on the top wall of the guide sleeve 51. The latch pin rod 522 linearly slides and cooperates with the guide sleeve 51. The spring 53 is sleeved outside the guide rod 521 and abuts between the top wall of the guide sleeve 51 and the latch pin rod 522; placing the spring 53 inside the top of the guide sleeve 51 enables the lock tongue structure 5 to remain compact and small, and can limit and position the spring 53.

[0044] As Figure 7 and Figure 8 As shown, the main frame assembly 1 includes a seat frame 11. A backrest frame 12 is hinged to the rear side of the seat frame 11. A footrest bracket 13 is hinged to the front side of the seat frame 11. A footrest frame 14 is hinged to the front side of the footrest bracket 13. By the backrest frame 12 and the footrest bracket 13 flipping relative to the seat frame 11, and the footrest frame 14 flipping relative to the footrest bracket 13, the backrest frame 12, the seat frame 11, the footrest bracket 13, and the footrest frame 14 are flattened into a bed shape; the main frame assembly 1 with this structure enables the wheelchair to be unfolded into a bed shape.

[0045] Moreover, the bottom of the seat frame 11 is further connected with a front caster group 15 and a rear caster group 16. The front caster group 15 and the rear caster group 16 are conventional structures of the wheelchair and will not be elaborated in detail here.

[0046] The above is the preferred solution of the present invention, showing and describing the basic principle, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional wheelchair with an armrest storage structure, comprising a main frame assembly (1) and armrest frame assemblies (2) connected to left and right sides of the main frame assembly (1), characterized in that: The handrail frame assembly (2) comprises a fixing frame (3) and a handrail frame (4); the handrail frame (4) is hingedly connected to the fixing frame (3) by turning in an outer space; an elastically sliding locking tongue structure (5) is provided on the handrail frame (4); one end of the locking tongue structure (5) is fixedly connected to a pull handle (6); the other end of the locking tongue structure (5) extends out or retracts into the handrail frame (4) following the movement of the pull handle (6); a locking hole (301) is provided on the fixing frame (3) corresponding to the locking tongue structure (5); the locking tongue structure (5) is elastically inserted into the locking hole (301) to lock the handrail frame (4) in an unfolded state.

2. The multifunctional wheelchair with an armrest storage structure according to claim 1, characterized in that The locking tongue structure (5) comprises a guide sleeve (51), a pull rod (52) and a spring (53); the guide sleeve (51) is fixed inside the handrail frame (4); the pull rod (52) slides linearly inside the guide sleeve (51); the spring (53) abuts between the guide sleeve (51) and the pull rod (52); one end of the pull rod (52) is connected to the handle (6); and the other end is elastically extended or retracted by the spring (53).

3. The multifunctional wheelchair with an armrest storage structure according to claim 2, characterized in that: An anti-sway rod (61) extends from the pull handle (6), the anti-sway rod (61) is arranged on one side of the pull rod (52) and is spaced apart from the pull rod (52) in front and behind, and an anti-sway hole (401) correspondingly provided on the handrail frame (4) and slidably matched with the anti-sway rod (61).

4. The multifunctional wheelchair with an armrest storage structure according to claim 1, characterized in that: The fixing frame (3) is provided with a first limiting member, and when the armrest frame (4) is in the unfolded state, the inner side of the armrest frame (4) abuts against the first limiting member.

5. The multifunctional wheelchair with an armrest storage structure according to claim 1, characterized in that: The fixing frame (3) is provided with a second limiting member, and when the armrest frame (4) is in the storage state, the outer side of the armrest frame (4) abuts against the second limiting member.

6. The multifunctional wheelchair with an armrest storage structure according to claim 2, characterized in that: The handrail frame (4) is provided with a grip (41), the grip (41) extending in the same direction as the pull handle (6) and being disposed on the upper side of the pull handle (6), and when the pull handle (6) is abutted against the grip (41), the other end of the pull rod (52) is at least pulled out of the lock hole (301).

7. The multifunctional wheelchair with an armrest storage structure according to claim 6, characterized in that: The pull handle (6) is in the shape of an umbrella handle, including a handle portion (62) and a handle bend portion (63), wherein the handle portion (62) and the handle bend portion (63) are hidden in a vertical plane of the handrail frame (4); one end of the pull rod (52) is connected to the handle portion (62), and the handle bend portion (63) is placed on the upper side of the handle portion (62) as a grip and is spaced apart from the grip (41).

8. The multifunctional wheelchair with an armrest storage structure according to claim 6, characterized in that: The handrail frame (4) comprises at least a pair of handrail vertical tubes (42), the top and middle parts of the pair of handrail vertical tubes (42) are respectively connected to a handrail curved tube (43) and a handrail horizontal tube (44), the locking tongue structure (5) and the pull handle (6) are movably connected to the handrail horizontal tube (44), the handrail curved tube (43) is an "e"-shaped structure, and its tail is inclined and constitutes a handle (41); an handrail pad (7) is provided on the handrail curved tube (43).

9. The multifunctional wheelchair with an armrest storage structure according to claim 2, characterized in that: The pull rod (52) includes a guide rod (521), the outer end of the guide rod (521) is connected to the pull handle (6), and the inner end is provided with a latch rod (522), the top wall of the guide sleeve (51) is provided with a guide hole (511) which is linearly slidably matched with the guide rod (521), the latch rod (522) is linearly slidably matched with the guide sleeve (51), and the spring (53) is sleeved outside the guide rod (521) and abuts between the top wall of the guide sleeve (51) and the latch rod (522).

10. The multifunctional wheelchair with an armrest storage structure according to claim 1, characterized in that: The main frame assembly (1) comprises a seat frame (11), a back frame (12) is hingedly connected to the rear side of the seat frame (11), a foot support frame (13) is hingedly connected to the front side of the seat frame (11), and a pedal frame (14) is hingedly connected to the front side of the foot support frame (13). By flipping the back frame (12) and the foot support frame (13) relative to the seat frame (11), and flipping the pedal frame (14) relative to the foot support frame (13), the back frame (12), the seat frame (11), the foot support frame (13) and the pedal frame (14) are flattened into a bed shape.

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