Detachable leg supporting structure of wheelchair

Abstract

The utility model discloses a detachable leg supporting structure of a wheelchair, and relates to the technical field of wheelchair leg supporting, the detachable leg supporting structure comprises a supporting column and a connecting rod, the connecting rod is S-shaped, the outer side of the supporting column is fixedly connected with a first supporting block, the top end of the first supporting block is movably connected with a cross-shaped strip, and the cross-shaped strip is fixedly connected with the supporting column. A one-way mechanism is arranged in the first supporting block, the one-way mechanism is movably connected with the cross bar, and the outer side of the connecting rod is fixedly connected with a first extension rod. According to the one-way mechanism, due to the fact that the inclined face of the tooth block is attached to the inclined face of the limiting gear and the rotation of the limiting gear, under the action of the reset spring, the tooth block moves in a reciprocating mode to drive the adjusting plate and the guide rod to move in a reciprocating mode, and if the connecting rod needs to rotate reversely, the tooth block is separated from the limiting gear by shifting the adjusting plate; at the moment, the connecting rods can be freely rotated, so that the horizontal angles of the supporting legs can be conveniently adjusted, and the supporting legs can be better attached to the legs of the patient.

Description

Technical Field

[0001] The utility model relates to the technical field of wheelchair leg supports, in particular to a detachable leg support structure of a wheelchair. Background Art

[0002] A wheelchair is a mobility aid designed for people with limited mobility, which allows the user to move independently without external assistance. The design and function of wheelchairs have been continuously improved with the development of technology, aiming to improve the quality of life and independence of users. Its design is becoming more and more humane and its functions are becoming more and more abundant. In order to improve the comfort and applicability of wheelchairs, the leg support structure of wheelchairs has become particularly important.

[0003] However, traditional wheelchair leg support structures mostly adopt a fixed design, which is inconvenient to install. After installation, the position of the support part is fixed and cannot be adjusted according to the position of the legs. Therefore, the fixed leg support structure has a poor user experience, and the user often needs to adjust the leg support structure longitudinally to keep the legs in a more comfortable stress posture. Therefore, a detachable leg support structure for a wheelchair is needed to solve the existing deficiencies. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a detachable leg support structure for a wheelchair. By setting a one-way mechanism and a limiting mechanism, it is convenient to solve the problem that the fixed leg support structure has a poor user experience and the user often needs to adjust the leg support structure longitudinally so that the legs can maintain a more comfortable stress-bearing posture.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A detachable leg support structure for a wheelchair comprises a support column and a connecting rod, the connecting rod is S-shaped, the outer side of the support column is fixedly connected to a support block 1, the top end of the support block 1 is movably connected to a cross bar, a one-way mechanism is arranged inside the support block 1, the one-way mechanism is movably connected to the cross bar, the outer side of the connecting rod is fixedly connected to an extension rod 1, and the other end of the extension rod 1 is fixedly connected to a movable block 1, the cross bar runs through the movable block 1, and the cross bar is movably connected to the movable block 1, the top end of the connecting rod is movably connected to a support leg via a rotating shaft, the middle position of the connecting rod is movably connected to an auxiliary rod via a rotating shaft, the outer side of the support leg is fixedly connected to a limiting mechanism, and the limiting mechanism is movably connected to the auxiliary rod.

[0007] As mentioned above, the outer side of the support column is fixedly connected with the support block 2, and the top of the support block 2 is fixedly connected with the limiting column, the support block 2 is located directly above the support block 1, the outer side of the connecting rod is fixedly connected with the extension rod 2, and the other end of the extension rod 2 is fixedly connected with the movable block 2, the limiting column passes through the movable block 2, and the limiting column is movably connected to the movable block 2.

[0008] As mentioned above, the one-way mechanism includes spacer block one, spacer block two, a limiting gear and a supporting tube, the supporting tube passes through the limiting gear, and the supporting tube is fixedly connected to the limiting gear, the cross bar passes through spacer block one and spacer block two in sequence, and the cross bar is fixedly connected to both spacer block one and spacer block two, the cross bar passes through the limiting gear, and the cross bar is movably connected to the limiting gear, and the cross bar is located on the inner side of the supporting tube.

[0009] As mentioned above, the spacer block 1 is located at the top of the support block 1, and the spacer block 2 is located inside the support block 1. The limit gear is movably connected to the inside of the support block 1 through the support tube, and the spacer block 2 is located on the inner side of the support tube.

[0010] As mentioned above, the one-way mechanism also includes a buffer ring and a buffer spring, and the buffer ring and the buffer spring are both sleeved on the outside of the cross bar, the top end of the buffer spring is fixedly connected to the bottom end of the buffer ring, and the bottom end of the buffer spring is fixedly connected to the inside of the support block one, the top end of the buffer ring is attached to the bottom end of the spacer block two, and the buffer ring and the buffer spring are both located on the inner side of the support tube.

[0011] As mentioned above, the one-way mechanism also includes a tooth block, an adjustment plate, a guide rod and a return spring. The tooth block is fixedly connected to one side of the adjustment plate, and the guide rod is fixedly connected to the other side of the adjustment plate. The tooth block is one-way meshed with the limit gear, and the return spring is sleeved on the outside of the guide rod.

[0012] As mentioned above, the guide rod is movably connected to the inside of the support block one, one end of the return spring is fixedly connected to one side of the adjustment plate, and the other end of the return spring is fixedly connected to the inside of the support block one, the adjustment plate is T-shaped, one end of the adjustment plate passes through the support block one, and the adjustment plate is movably connected to the support block one.

[0013] As mentioned above, the limiting mechanism includes a fixed column, a ring, an insertion rod, a spacer block 3 and a compression spring. The fixed column is fixedly connected to the outer side of the ring, the fixed column passes through the supporting leg, and the fixed column is fixedly connected to the supporting leg, the insertion rod passes through the spacer block 3, and the insertion rod is fixedly connected to the spacer block 3, and the compression spring is sleeved on the outer side of the insertion rod.

[0014] As mentioned above, the insertion rod passes through the fixed column, and the insertion rod is movably connected to the fixed column, the spacer block is movably connected to the inside of the fixed column, and the auxiliary rod passes through the ring, and the auxiliary rod is movably connected to the ring.

[0015] As mentioned above, one end of the compression spring is fixedly connected to one end of the spacer block three, and the other end of the compression spring is fixedly connected to the inside of the fixed column. A plurality of sockets are provided on the outside of the auxiliary rod, and the sockets are distributed in a linear array, and the sockets are adapted to the plug rod. Beneficial Effects

[0016] Compared with the prior art, the detachable leg support structure of the wheelchair has the following beneficial effects:

[0017] 1. The utility model sets up a one-way mechanism. Since the inclined surface of the tooth block fits with the inclined surface of the limit gear, the limit gear rotates, and under the action of the reset spring, the tooth block moves back and forth, driving the adjustment plate and the guide rod to move back and forth. If it is necessary to rotate the connecting rod in the opposite direction, the adjusting plate is moved to separate the tooth block from the limit gear. At this time, the connecting rod can be freely rotated, thereby facilitating the adjustment of the horizontal angle of the support leg, so that the support leg and the patient's leg are more closely fitted.

[0018] 2. The utility model provides a limiting mechanism, and when adjusting the angle of the support leg, the insertion rod is pulled outward to compress the three pairs of compression springs of the spacer block, and the front end of the insertion rod is separated from the insertion hole, and then the support leg is lifted to the required height. In the process of lifting the support leg, the ring moves along the auxiliary rod, and the auxiliary rod rotates around the rotating shaft, and the insertion rod is loosened. Under the action of the compression spring, the insertion rod is inserted into the inside of the insertion hole. At this time, under the support of the auxiliary rod, the support leg maintains a constant height, and the longitudinal height of the support leg can be freely adjusted, so that the patient's legs can be supported at various angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 This is a structural schematic diagram of another viewing angle of the utility model;

[0022] Figure 3 It is a schematic diagram of the one-way mechanism structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the limiting mechanism of the utility model;

[0024] Figure 5 For this utility model Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0025] Figure 6 For this utility model Figure 1 Schematic diagram of the enlarged structure at point B in the middle.

[0026] In the figure: 1. support column; 2. connecting rod; 3. support block 1; 4. cross bar; 5. one-way mechanism; 501. spacer block 1; 502. spacer block 2; 503. limit gear; 504. support cylinder; 505. buffer ring; 506. buffer spring; 507. tooth block; 508. adjustment plate; 509. guide rod; 510. reset spring; 6. extension rod 1; 7. movable block 1; 8. support leg; 9. auxiliary rod; 10. limit mechanism; 1001. fixed column; 1002. collar; 1003. plug rod; 1004. spacer block 3; 1005. compression spring; 11. support block 2; 12. limit column; 13. extension rod 2; 14. movable block 2; 15. socket.

[0027] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0028] The following is a detailed description of a detachable leg support structure of a wheelchair provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the utility model.

[0029] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0030] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0031] like Figure 1-6 As shown, the utility model provides a technical solution: a detachable leg support structure of a wheelchair, comprising a support column 1 and a connecting rod 2, the connecting rod 2 is S-shaped, the outer side of the support column 1 is fixedly connected to a support block 3, the top of the support block 3 is movably connected to a cross bar 4, a one-way mechanism 5 is arranged inside the support block 3, the one-way mechanism 5 is movably connected to the cross bar 4, the outer side of the connecting rod 2 is fixedly connected to an extension rod 6, and the other end of the extension rod 6 is fixedly connected to a movable block 7, the cross bar 4 penetrates the movable block 7, and the cross bar 4 is movably connected to the movable block 7, and the top of the connecting rod 2 is movably connected through a rotating shaft. It is movably connected with a support leg 8, and the middle position of the connecting rod 2 is movably connected with an auxiliary rod 9 through a rotating shaft. The outer side of the supporting leg 8 is fixedly connected with a limiting mechanism 10, and the limiting mechanism 10 is movably connected with the auxiliary rod 9. The outer side of the support column 1 is fixedly connected with a support block 2 11, and the top of the support block 2 11 is fixedly connected with a limiting column 12, and the support block 2 11 is located directly above the support block 1 3. The outer side of the connecting rod 2 is fixedly connected with an extension rod 2 13, and the other end of the extension rod 2 13 is fixedly connected with a movable block 2 14, the limiting column 12 penetrates the movable block 2 14, and the limiting column 12 is movably connected to the movable block 2 14.

[0032] First, align the inner side of the movable block 17 at the end of the extension rod 16 with the cross bar 4, and align the movable block 2 14 at the end of the extension rod 2 13 with the limiting column 12, and then use the connecting rod 2 to control the movable block 17 and the movable block 2 14 to move downward at the same time, until the limiting column 12 is inserted into the inner side of the movable block 2 14, the cross bar 4 is inserted into the inner side of the movable block 17, and the movable block 2 14 moves downward, pushing the spacer block 1 501 to move downward synchronously, so that the cross bar 4 moves downward synchronously, driving the spacer to move downward inside the support tube 504, so that the buffer ring 505 is squeezed downward, so that the buffer spring 506 is compressed and shortened, and then the connecting rod 2 is rotated to one side of the leg, driving the movable block 2 14 to rotate around the limiting column 12, so that the movable block 17 drives the cross bar 4 to rotate synchronously, thereby driving the limiting gear 503 to rotate synchronously, because the inclined surface of the tooth block 507 fits the inclined surface of the limiting gear 503, With the rotation of the limit gear 503, under the action of the reset spring 510, the tooth block 507 moves back and forth, driving the adjustment plate 508 and the guide rod 509 to move back and forth. If it is necessary to rotate the connecting rod 2 in the opposite direction, the tooth block 507 is separated from the limit gear 503 by toggling the adjustment plate 508, and the connecting rod 2 can be rotated freely at this time; in addition, when adjusting the angle of the support leg 8, the insertion rod 1003 is pulled outward so that the spacer block 3 1004 compresses the compression spring 1005, and the front end of the insertion rod 1003 is separated from the socket 15, and then the support leg 8 is lifted to the required height. In the process of lifting the support leg 8, the ring 1002 moves along the auxiliary rod 9, and the auxiliary rod 9 rotates around the rotating shaft, loosening the insertion rod 1003. Under the action of the compression spring 1005, the insertion rod 1003 is inserted into the inside of the socket 15. At this time, under the support of the auxiliary rod 9, the support leg 8 maintains a constant height.

[0033] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, the specific details are described in detail in the above preferred embodiments of the present invention, and the present invention can be fully understood by those skilled in the art without the description of these details. The above is only the preferred implementation mode of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A detachable leg support structure for a wheelchair, comprising a support column (1) and a connecting rod (2), characterized in that: The connecting rod (2) is S-shaped, the outer side of the supporting column (1) is fixedly connected to a supporting block (3), the top end of the supporting block (3) is movably connected to a cross bar (4), a one-way mechanism (5) is arranged inside the supporting block (3), the one-way mechanism (5) is movably connected to the cross bar (4), the outer side of the connecting rod (2) is fixedly connected to an extension rod (6), and the other end of the extension rod (6) is fixedly connected to a movable block (7), the cross bar (4) penetrates the movable block (7), and the cross bar (4) is movably connected to the movable block (7), the top end of the connecting rod (2) is movably connected to a supporting leg (8) via a rotating shaft, the middle position of the connecting rod (2) is movably connected to an auxiliary rod (9) via a rotating shaft, the outer side of the supporting leg (8) is fixedly connected to a limiting mechanism (10), and the limiting mechanism (10) is movably connected to the auxiliary rod (9).

2. The detachable leg support structure of a wheelchair according to claim 1, characterized in that: The outer side of the support column (1) is fixedly connected to a support block 2 (11), and the top end of the support block 2 (11) is fixedly connected to a limiting column (12); the support block 2 (11) is located directly above the support block 1 (3); the outer side of the connecting rod (2) is fixedly connected to an extension rod 2 (13), and the other end of the extension rod 2 (13) is fixedly connected to a movable block 2 (14); the limiting column (12) penetrates the movable block 2 (14), and the limiting column (12) is movably connected to the movable block 2 (14).

3. The detachable leg support structure of a wheelchair according to claim 1, characterized in that: The one-way mechanism (5) comprises a spacer block 1 (501), a spacer block 2 (502), a limit gear (503) and a support tube (504); the support tube (504) passes through the limit gear (503), and the support tube (504) is fixedly connected to the limit gear (503); the cross bar (4) passes through the spacer block 1 (501) and the spacer block 2 (502) in sequence, and the cross bar (4) is fixedly connected to both the spacer block 1 (501) and the spacer block 2 (502); the cross bar (4) passes through the limit gear (503), and the cross bar (4) is movably connected to the limit gear (503), and the cross bar (4) is located on the inner side of the support tube (504).

4. The detachable leg support structure of a wheelchair according to claim 3, characterized in that: The spacer block 1 (501) is located at the top of the support block 1 (3), and the spacer block 2 (502) is located inside the support block 1 (3). The limit gear (503) is movably connected to the inside of the support block 1 (3) through the support tube (504), and the spacer block 2 (502) is located on the inner side of the support tube (504).

5. The detachable leg support structure of a wheelchair according to claim 4, characterized in that: The one-way mechanism (5) further comprises a buffer ring (505) and a buffer spring (506), wherein the buffer ring (505) and the buffer spring (506) are both sleeved on the outside of the cross bar (4), the top end of the buffer spring (506) is fixedly connected to the bottom end of the buffer ring (505), and the bottom end of the buffer spring (506) is fixedly connected to the inside of the first support block (3), the top end of the buffer ring (505) is in contact with the bottom end of the second spacer block (502), and the buffer ring (505) and the buffer spring (506) are both located on the inside of the support tube (504).

6. The detachable leg support structure of a wheelchair according to claim 5, characterized in that: The one-way mechanism (5) further comprises a tooth block (507), an adjustment plate (508), a guide rod (509) and a return spring (510); the tooth block (507) is fixedly connected to one side of the adjustment plate (508), and the guide rod (509) is fixedly connected to the other side of the adjustment plate (508); the tooth block (507) is one-way meshed with the limit gear (503), and the return spring (510) is sleeved on the outside of the guide rod (509).

7. The detachable leg support structure of a wheelchair according to claim 6, characterized in that: The guide rod (509) is movably connected to the interior of the support block one (3), one end of the return spring (510) is fixedly connected to one side of the adjustment plate (508), and the other end of the return spring (510) is fixedly connected to the interior of the support block one (3), the adjustment plate (508) is T-shaped, one end of the adjustment plate (508) passes through the support block one (3), and the adjustment plate (508) is movably connected to the support block one (3).

8. The detachable leg support structure of a wheelchair according to claim 1, characterized in that: The limiting mechanism (10) comprises a fixed column (1001), a collar (1002), an insertion rod (1003), a spacer block three (1004) and a compression spring (1005); the fixed column (1001) is fixedly connected to the outside of the collar (1002); the fixed column (1001) passes through the support leg (8), and the fixed column (1001) is fixedly connected to the support leg (8); the insertion rod (1003) passes through the spacer block three (1004), and the insertion rod (1003) is fixedly connected to the spacer block three (1004); and the compression spring (1005) is sleeved on the outside of the insertion rod (1003).

9. The detachable leg support structure of a wheelchair according to claim 8, characterized in that: The insertion rod (1003) passes through the fixed column (1001), and the insertion rod (1003) is movably connected to the fixed column (1001), the spacer block three (1004) is movably connected to the inside of the fixed column (1001), and the auxiliary rod (9) passes through the collar (1002), and the auxiliary rod (9) is movably connected to the collar (1002).

10. The detachable leg support structure of a wheelchair according to claim 9, characterized in that: One end of the compression spring (1005) is fixedly connected to one end of the spacer block three (1004), and the other end of the compression spring (1005) is fixedly connected to the inside of the fixed column (1001). A plurality of insertion holes (15) are provided on the outside of the auxiliary rod (9), and the insertion holes (15) are distributed in a linear array, and the insertion holes (15) are compatible with the insertion rod (1003).

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