Damping underarm crutch

Abstract

The damping underarm crutch comprises a supporting rod and an armpit support assembly arranged at the upper end of the supporting rod, the armpit support assembly comprises a connecting piece fixedly arranged at the upper end of the supporting rod and a saddle-shaped armpit support arranged on the connecting piece, the connecting piece comprises a mounting end and a buffering end, the rear end of the armpit support is hinged to the mounting end, and the buffering end is hinged to the rear end of the armpit support. The front end of the armpit support is elastically connected with the buffering end of the connecting piece through the elastic assembly, and compared with a traditional damping armpit crutch, the saddle-shaped armpit support is higher in attaching degree with the armpit of the human body and not prone to disengagement and displacement in the using process, and friction is avoided; the armpit support front part adopts an elastic assembly to properly absorb shock and buffer the armpit of a user, and the armpit support rear part adopts a rotatable hinge, so that both the buffering function and the supporting function are considered.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices for assisting walking, in particular to a shock-absorbing underarm crutch. Background Art

[0002] The underarm crutch is an auxiliary walking device for people with severe lower limb disabilities or patients during lower limb rehabilitation. It can balance and support the body. The underarm crutch is generally composed of a support rod, an underarm support, and a handle. Underarm crutch with shock absorption and buffering effects are also available on the market, such as the shock-absorbing underarm crutch disclosed by announcement number CN209864534U. A shock-absorbing component is provided at the connection between the underarm support and the support rod, which can reduce vibration to a certain extent. However, the design of the underarm crutch does not properly consider the ergonomics of people walking. Although the design of the shock-absorbing component can reduce vibration to a certain extent, when people use the underarm crutch to move back and forth, the axillary support and the user's armpit are easily displaced, and the fit between the axillary support and the armpit cannot be guaranteed. After long-term use, the axillary support and the armpit rub against each other, causing pain and discomfort. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a shock-absorbing underarm crutch, which has a good shock-absorbing effect and can better reduce the friction with the patient's armpit.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A shock-absorbing underarm crutch comprises a support rod and an axillary support assembly arranged at the upper end of the support rod, the axillary support assembly comprises a connecting piece fixedly arranged at the upper end of the support rod, and a saddle-shaped axillary support arranged on the connecting piece, the connecting piece comprises a mounting end and a buffer end, the rear end of the axillary support is hinged on the mounting end, and the front end of the axillary support is elastically connected to the buffer end of the connecting piece through an elastic assembly.

[0006] The elastic component includes a strip buffer groove, a spring arranged in the strip buffer groove, a connecting pin inserted in the strip buffer groove and abutting against the upper end of the spring, and a connecting hole is provided at the front end of the armpit support. The connecting pin is inserted into the connecting hole and the strip buffer groove in sequence so that the front end of the armpit support is elastically connected to the buffer end.

[0007] The mounting end is rod-shaped, a first hinge hole is opened on the upper part of the mounting end, a second hinge hole is opened at the rear end of the armpit support, and the rear end of the armpit support and the mounting end are rotatably connected by inserting pins in the first hinge hole and the second hinge hole.

[0008] The support rod comprises a first support rod, the upper end of which is tilted backward at an angle α relative to the vertical direction to form a mounting rod, and the lower portion of the mounting end of the connector is inserted into the mounting rod and fixed by screws.

[0009] A spring straight groove is formed in the buffer end at a forward tilt angle β along the vertical direction, and the spring is installed in the spring straight groove.

[0010] The armpit support comprises a front saddle portion and a rear saddle portion, wherein the rear saddle portion is rotatably hinged on the mounting end, and the front saddle portion is elastically connected to the buffer end through an elastic component.

[0011] The armpit support assembly is wrapped with a soft shock-absorbing sleeve on the outside, and a buffer space is formed between the shock-absorbing sleeve and the armpit support (31).

[0012] The shock-absorbing sleeve is provided with a ventilation hole.

[0013] The support rod also includes a second support rod and a hollow adjustment rod. The first support rod is adjustably plugged into the upper end of the adjustment rod, and the second support rod is adjustably plugged into the lower end of the adjustment rod.

[0014] A non-slip base is arranged at the lower end of the second support rod.

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

[0016] 1. The armpit support is saddle-shaped, with a concave arc in the middle and raised ends to wrap and fit the armpit to a certain extent, which conforms to the ergonomic design of the human armpit; the front end of the armpit support is provided with an elastic component to be elastically connected to the connecting piece, and the rear end of the armpit support is rotatably hinged on the connecting piece. When the user uses the underarm crutches to assist walking, the force of the armpit first acts mainly on the front saddle of the armpit support, and the spring compression is relatively large at this time. Then, the force is reduced and gradually transferred to the rear saddle of the armpit support. At this time, the spring compression is reduced, and the user's armpit is mainly buffered by the spring. The armpit support is subjected to cyclically changing forces, and the front saddle of the front end of the armpit support produces reciprocating displacement in the vertical direction, and the armpit support as a whole reciprocates with the second hinge hole as the rotation center. When the user walks, the armpit support can fit the armpit to the greatest extent, reduce loose displacement, and reduce friction.

[0017] Compared with the traditional underarm crutches with shock absorption, firstly, the saddle-shaped underarm support of the present design has a higher degree of fit with the human body's underarm, and is not easy to be disengaged and displaced during use, thus avoiding friction; secondly, the front part of the underarm support adopts an elastic component to properly shock-absorb the user's underarm, and the rear part of the underarm support adopts a rotatable hinge. This design is more ergonomic. When the user uses the underarm crutches to assist walking, the front saddle of the underarm support realizes shock absorption and buffering in the vertical direction, and the hinged design of the rear saddle can provide appropriate support for the patient's rear underarm, taking into account both the buffering function and the support function. Compared with the traditional shock-absorbing crutches in which the underarm support and the lower support rod adopt a double spring or multiple spring design, the present design can retain sufficient partial hard support for the user when standing, reduce the user's sense of shaking when standing, and provide a more adequate sense of support. The design of the single-chamber spring can provide better buffering for the user when walking, and the rebound is also relatively crisp and the response is also faster, giving the user better operability and stability, and not having a more obvious sense of shaking like double springs or multiple springs.

[0018] 2. The front end of the armpit support is connected to the strip buffer groove on the connecting piece through a connecting pin. The connecting pin abuts against the upper end of the spring. During the buffering process of the armpit support, the connecting pin slides in the strip buffer groove, which plays a role in shock absorption and buffering while reducing the shaking of the armpit support, further improving the user experience.

[0019] 3. The upper end of the first support rod is tilted backward at an angle α to form a mounting rod, the mounting end of the connector is fixed on the mounting rod, and the rear end of the axillary support is hinged at the mounting end, so that the hinge point is designed to be at the rear end of the axillary support as much as possible to provide better support at the rear end of the human armpit; the spring at the buffer end is set in the spring straight groove at a forward tilt angle β, which is more in line with the angle of force applied to the spring during use, and further exerts the effect of buffering and shock absorption.

[0020] 4. The armpit support component is wrapped with a shock-absorbing sleeve to further reduce shock and cushion. The shock-absorbing sleeve is made of soft material or elastic fabric to reduce friction and improve skin-friendliness. The surface is provided with ventilation holes to further improve the user experience.

[0021] 5. The support rod is composed of a first support rod adjustably plugged into the upper end of the adjustment rod, and a second support rod adjustably plugged into the lower end of the adjustment rod. The two-stage adjustable height increases the adjustable range and has a wider applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the appearance and structure of the axillary crutch;

[0023] Figure 2 is a schematic diagram of the structure of the armpit support assembly;

[0024] Figure 3 It is a schematic diagram of the exploded structure of the armpit support assembly;

[0025] Figure 4 is a cross-sectional view of the armpit support assembly;

[0026] Figure 5 It is an exploded schematic diagram of the mounting rod and the connecting parts;

[0027] Figure 6 This is an exploded diagram of the support rod. DETAILED DESCRIPTION

[0028] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention are further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the convenience of description, only the parts related to the present invention are shown in the accompanying drawings, rather than all of them.

[0029] Reference Figure 1 , Figure 2 The utility model proposes a shock-absorbing underarm crutch, comprising a support rod 1, a support armrest 2 arranged on the support rod 1, and an underarm support assembly 3 arranged at the upper end of the support rod 1, the underarm support assembly 3 comprising a connecting member 32 fixedly arranged at the upper end of the support rod 1, and an underarm support 31 in a saddle shape arranged on the connecting member 32, the connecting member 32 comprising a mounting end 32a and a buffer end 32b, the rear end of the underarm support 31 is hinged on the mounting end 32a, and the front end of the underarm support 31 is elastically connected to the buffer end 32b of the connecting member 32 through an elastic assembly 33.

[0030] Reference Figure 3 The elastic component 33 includes a strip buffer groove 321, a spring 322 disposed in the strip buffer groove 321, and a connecting pin 323 inserted in the strip buffer groove 321 and abutting against the upper end of the spring 322. The front end of the armpit support 31 is provided with a connecting hole 311. The connecting pin 323 is inserted into the connecting hole 311 and the strip buffer groove 321 in sequence so that the front end of the armpit support 31 is elastically connected to the buffer end 32b. The front end of the armpit support 31 is connected to the strip buffer groove 321 on the connecting member 32 through the connecting pin 323. The connecting pin 323 abuts against the upper end of the spring 322. During the buffering process of the armpit support 31, the connecting pin 323 slides in the strip buffer groove 321, which plays a role in shock absorption and buffering, while reducing the shaking of the armpit support 31, further improving the user experience.

[0031] Reference Figure 3 The mounting end 32a is rod-shaped, a first hinge hole 320 is opened at the upper part of the mounting end 32a, a second hinge hole 310 is opened at the rear end of the armpit support 31, and the rear end of the armpit support 31 and the mounting end 32a are rotatably connected by inserting pins in the first hinge hole 320 and the second hinge hole 310.

[0032] Furthermore, the armpit support 31 is saddle-shaped, with a concave arc in the middle and the two ends tilted to form a certain covering fit for the armpit, which conforms to the ergonomic design of the human armpit; the front end of the armpit support 31 is provided with an elastic component 33 to be elastically connected with the connecting piece 32, and the rear end of the armpit support 31 is rotatably hinged on the connecting piece 32. When the user uses the underarm crutches to assist walking, the force of the armpit first acts mainly on the front saddle 31a of the armpit support, at which time the compression of the spring 322 is relatively large, and then the force is reduced and gradually transferred to the rear saddle 31b of the armpit support 31, at which time the compression of the spring is reduced, and the user's armpit is mainly buffered by the spring 322. The armpit support 31 is subjected to a cyclically changing force, and the front saddle 31a of the front end of the armpit support 31 produces a reciprocating displacement in the vertical direction, and the armpit support 31 as a whole reciprocates with the second hinge hole 310 as the rotation center.

[0033] Compared with the traditional underarm crutches with shock-absorbing function, firstly, the saddle-shaped underarm support 31 of the present design fits the human body's armpit more closely, is not easy to detach and cause displacement during use, and avoids friction; secondly, the front part of the underarm support 31 adopts an elastic component 33 to appropriately shock-absorb the user's armpit, and the rear part of the underarm support 31 adopts a rotatable hinge. This design is more ergonomic. When the user uses the underarm crutches to assist in walking, the front saddle of the underarm support 31 realizes shock-absorbing and buffering in the vertical direction, and the hinged design of the rear saddle 31b can provide appropriate support for the back of the patient's armpit, taking into account both the buffering function and the supporting function. Compared with the traditional shock-absorbing crutch that uses a double spring or multiple spring design for the armpit support and the lower support rod, this design can retain sufficient partial hard support for the user when standing, reduce the user's sense of shaking when standing, and provide a more adequate sense of support. The single-chamber spring design can provide better cushioning for the user when walking, and the rebound is also crisper and the response is faster, giving the user better operability and stability, without the obvious swinging feeling like double springs or multiple springs.

[0034] Reference Figure 3 The support rod 1 includes a first support rod 10, the upper end of the first support rod 10 is tilted backward at an angle α relative to the vertical direction to form a mounting rod 100, and the lower part of the mounting end 32a of the connecting member 32 is inserted into the mounting rod 100 and fixed by screws.

[0035] Reference Figure 4 A spring straight groove 324 is formed in the buffer end 32 b at an angle β inclined forward in the vertical direction, and the spring 322 is installed in the spring straight groove 324 .

[0036] Furthermore, the upper end of the first support rod 10 is tilted backward at an angle α to form the mounting rod 100, the mounting end 32a of the connecting member 32 is fixed on the mounting rod 100, and the rear end of the armpit support 31 is hinged at the mounting end 32a, so that the hinge point is designed to be at the rear end of the armpit support 31 as much as possible, providing better support at the rear end of the human armpit; the spring 322 of the buffer end 32b is arranged in the spring straight groove 324 at a forward tilt angle β, which is more in line with the angle of force applied to the spring 322 during use, thereby further exerting the effect of buffering and shock absorption.

[0037] Reference Figure 2 The armpit support 31 includes a front saddle portion 31a and a rear saddle portion 32b. The rear saddle portion 32b is rotatably hinged on the mounting end 32a. The front saddle portion 31a is elastically connected to the buffer end 32b through an elastic component 33.

[0038] Reference Figure 1 or Figure 6 The armpit support assembly 3 is wrapped with a soft shock-absorbing sleeve 30, and a buffer space is formed between the shock-absorbing sleeve 30 and the armpit support 31. Preferably, a ventilation hole is provided on the shock-absorbing sleeve 30. The armpit support assembly 3 is wrapped with the shock-absorbing sleeve 30 to further reduce shock and buffer. The shock-absorbing sleeve 30 is made of soft material or elastic fabric to reduce friction and has better skin-friendliness. The surface is provided with ventilation holes to further improve the user experience.

[0039] Reference Figure 6 The support rod 1 also includes a second support rod 12 and a hollow adjustment rod 11. The first support rod 10 is adjustably plugged into the upper end of the adjustment rod 11, and the second support rod 12 is adjustably plugged into the lower end of the adjustment rod 11. The support rod 1 is composed of the first support rod 10 adjustably plugged into the upper end of the adjustment rod 11, and the second support rod 12 adjustably plugged into the lower end of the adjustment rod 11. The two-stage adjustable height is adopted to increase the adjustable range and have a wider applicability.

[0040] The lower end of the second support rod 12 is provided with an anti-skid base 4. The anti-skid base 4 is made of soft silicone material and has a certain anti-skid buffering effect. The four sides of the anti-skid base 4 are slightly tilted, and the fit with the ground is higher when walking, further improving the anti-skid buffering effect.

Claims

1. A shock-absorbing underarm crutch, characterized in that: The invention comprises a support rod (1) and an axillary support assembly (3) arranged at the upper end of the support rod (1); the axillary support assembly (3) comprises a connecting piece (32) fixedly arranged at the upper end of the support rod (1), and a saddle-shaped axillary support (31) arranged on the connecting piece (32); the connecting piece (32) comprises a mounting end (32a) and a buffer end (32b); the rear end of the axillary support (31) is hinged on the mounting end (32a), and the front end of the axillary support (31) is elastically connected to the buffer end (32b) of the connecting piece (32) through an elastic assembly (33).

2. The shock-absorbing underarm crutch according to claim 1, characterized in that: The elastic component (33) comprises a strip-shaped buffer groove (321), a spring (322) arranged in the strip-shaped buffer groove (321), and a connecting pin (323) inserted in the strip-shaped buffer groove (321) and abutting against the upper end of the spring (322); a connecting hole (311) is provided at the front end of the armpit support (31); the connecting pin (323) is inserted into the connecting hole (311) and the strip-shaped buffer groove (321) in sequence, so that the front end of the armpit support (31) is elastically connected to the buffer end (32b).

3. The shock-absorbing underarm crutch according to claim 2, characterized in that: The mounting end (32a) is rod-shaped, a first hinge hole (320) is provided at the upper portion of the mounting end (32a), a second hinge hole (310) is provided at the rear end of the armpit support (31), and the rear end of the armpit support (31) and the mounting end (32a) are rotatably connected by inserting pins in the first hinge hole (320) and the second hinge hole (310).

4. The shock-absorbing underarm crutch according to claim 1, characterized in that: The support rod (1) comprises a first support rod (10), the upper end of the first support rod (10) is tilted backward at an angle α relative to the vertical direction to form a mounting rod (100), and the lower part of the mounting end (32a) of the connecting member (32) is inserted into the mounting rod (100) and fixed by screw connection.

5. The shock-absorbing underarm crutch according to claim 3, characterized in that: A spring straight groove (324) is formed in the buffer end (32b) at a forward tilt angle β in the vertical direction, and the spring (322) is installed in the spring straight groove (324).

6. The shock-absorbing underarm crutch according to claim 1, characterized in that: The armpit support (31) comprises a front saddle portion (31a) and a rear saddle portion (31b), wherein the rear saddle portion (31b) is rotatably hinged on the mounting end (32a), and the front saddle portion (31a) is elastically connected to the buffer end (32b) via an elastic component (33).

7. The shock-absorbing underarm crutch according to claim 1, characterized in that: The armpit support assembly (3) is wrapped with a soft shock-absorbing sleeve (30) on the outside, and a buffer space is formed between the shock-absorbing sleeve (30) and the armpit support (31).

8. The shock-absorbing underarm crutch according to claim 7, characterized in that: The shock-absorbing sleeve (30) is provided with a ventilation hole.

9. The shock-absorbing underarm crutch according to claim 4, characterized in that: The support rod (1) further comprises a second support rod (12) and a hollow adjustment rod (11); the first support rod (10) is adjustably plugged into the upper end of the adjustment rod (11), and the second support rod (12) is adjustably plugged into the lower end of the adjustment rod (11).

10. The shock-absorbing underarm crutch according to claim 9, characterized in that: The lower end of the second support rod (12) is provided with an anti-slip base (4).

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