A flexibly adjustable upper limb prosthesis assembly

Abstract

The utility model discloses a kind of upper limb artificial limb assemblies of flexible adjustment, it is related to upper limb artificial limb assembly technical field, to solve the performance deficiency of current adjustment, resulting in inconvenient operation, the technical problem of affecting the autonomy and fluency of user's daily activities, including adjusting mechanism and the positioning mechanism and limiting mechanism set on adjusting mechanism, the adjusting mechanism includes mounting disc, support disc, first mounting plate and second mounting plate, the lower end of mounting disc is rotatably installed with rotary disc, the upper end of mounting disc is provided with motor of driving rotary disc, the support disc is rotatably connected in the lower end of rotary disc, the positioning mechanism includes the positioning rod of being set in the lower end of first mounting plate, the end of positioning rod is provided with limiting plate.The utility model has forearm flexible adjustment angle, can be convenient for user to take different position's article, greatly improve the autonomy and fluency of daily activities, and can conveniently carry the advantages of article.

Description

Technical Field

[0001] This utility model relates to the field of upper limb prosthetic components, and more specifically, to a flexibly adjustable upper limb prosthetic component. Background Technology

[0002] Upper limb prostheses are essential assistive devices that help people with upper limb loss regain mobility. Designed based on bionic principles, they are made of lightweight yet durable materials and are adaptable to different amputation sites. They enable basic movements such as grasping and extension, and have a high degree of realism in appearance. With the help of advanced technology, their flexibility and functionality are constantly being improved, helping patients regain their confidence in life.

[0003] Current upper limb prostheses still have certain limitations in practical applications, mainly relying on forearm vertical adjustment and lacking lateral rotation capabilities. When users attempt to reach objects to the side of their body, they often find it difficult to flexibly adjust the forearm angle, leading to inconvenience and affecting the user's autonomy and fluency in daily activities. Therefore, we propose a flexibly adjustable upper limb prosthesis component. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a flexible adjustable upper limb prosthesis component to solve the technical problem that the current adjustment performance is insufficient, resulting in inconvenient operation and affecting the autonomy and smoothness of the user's daily activities.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a flexibly adjustable upper limb prosthesis assembly, including an adjustment mechanism and a positioning mechanism and a limiting mechanism provided on the adjustment mechanism. The adjustment mechanism includes a mounting plate, a support plate, a first mounting plate, and a second mounting plate. A rotating disk is rotatably mounted on the lower end of the mounting plate, and a motor for driving the rotating disk is provided on the upper end of the mounting plate. The support plate is rotatably connected to the lower end of the rotating disk, and a connecting rod is provided on the lower end of the rotating disk. The first mounting plate is mounted on the lower end of the connecting rod, and a forearm is provided on the upper end of the second mounting plate. A rotating cylinder is provided on the upper end of the forearm. The positioning mechanism includes a positioning rod provided on the lower end of the first mounting plate, and a limiting plate is provided at the end of the positioning rod.

[0006] Preferably, the upper end of the support plate is provided with a circular limiting groove, the rotating plate is located in the circular limiting groove, and annular grooves are provided in both the circular limiting groove and the lower end of the rotating plate. Ball bearings are provided in the annular grooves. An extension hole is provided at the center of the upper end of the support plate, and the end of the connecting rod passes through the extension hole.

[0007] Preferably, a front upper electric push rod and a rear upper electric push rod are symmetrically rotatably mounted on the first mounting plate, and a first mounting frame and a second mounting frame are symmetrically mounted on the rotating cylinder. The piston rod ends of the front upper electric push rod and the rear upper electric push rod are rotatably connected to the first mounting frame and the second mounting frame, respectively.

[0008] Preferably, a lower front electric push rod and a lower rear electric push rod are symmetrically and rotatably mounted on the second mounting plate. The piston rod ends of the lower front electric push rod and the lower rear electric push rod are rotatably connected to the first mounting frame and the second mounting frame, respectively. The piston rod ends of the lower front electric push rod and the upper front electric push rod are staggered with those of the lower rear electric push rod and the upper rear electric push rod.

[0009] Preferably, the positioning rod includes a straight rod portion and a positioning portion disposed at the end of the straight rod portion along the long axis direction. The positioning portion is a downwardly curved arc shape. The positioning portion is generally arranged in a semi-circular shape. A fixed conical component and a limiting ring are fixedly disposed on the positioning portion. A movable conical component is sleeved on the positioning portion between the fixed conical component and the limiting ring.

[0010] Preferably, the limiting mechanism includes limiting blocks symmetrically arranged at both ends of the rotating cylinder. A circular hole is opened at the side end of the limiting block, the positioning part is located in the circular hole, and an installation cavity is opened on the upper inner wall of the circular hole. A spring is provided in the installation cavity, and a triangular buckle extending into the circular hole is installed at the end of the spring.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model, through the design of a rotating disk structure, enables the prosthetic component to achieve horizontal angle adjustment, effectively solving the problem of insufficient left and right rotation function of traditional prostheses. When users pick up items on the side of their body, they can flexibly adjust the angle of their forearm, greatly improving the autonomy and fluency of daily activities. In daily life scenarios, it is more convenient to grab items from the side of the table without having to move the body significantly, solving the problem of insufficient adjustment performance, which leads to inconvenience in operation and affects the autonomy and fluency of users' daily activities.

[0013] 2. This utility model also designs a positioning rod structure. The positioning part with an arc shape on the positioning rod can not only limit the adjustment of the upper and lower angle of the forearm, but the fixed conical part on the positioning part, together with the limiting mechanism, can also limit the rotation of the cylinder. When the forearm is rotated to a horizontal state while moving objects, the triangular buckle can be locked on the fixed conical part to limit the forearm. At this time, there is no need for the electric push rod to work continuously to maintain the horizontal state of the forearm, thereby saving energy. This energy-saving design not only extends the battery life of the prosthesis and reduces the charging frequency, but also reduces energy consumption and improves the economy and environmental friendliness of use. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of the present utility model;

[0015] Figure 2 This is a cross-sectional view of the mounting plate of this utility model.

[0016] Figure 3 This is a front view of the forearm rotation structure of this utility model;

[0017] Figure 4 This is a schematic diagram of a portion of the forearm structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the partial forearm in use according to the present invention;

[0019] Figure 6 This is a schematic diagram of the positioning mechanism structure of this utility model;

[0020] Figure 7 This is a schematic diagram of the limiting mechanism of this utility model.

[0021] Explanation of the numbers in the diagram: 100, Adjustment mechanism; 101, Mounting plate; 102, Support plate; 103, Rotating plate; 104, Ball bearing; 105, Connecting rod; 106, Motor; 107, First mounting plate; 108, Upper front electric push rod; 109, Upper rear electric push rod; 110, Lower front electric push rod; 111, Lower rear electric push rod; 112, Rotating cylinder; 113, First mounting bracket; 114, Second mounting bracket; 115, Forearm; 116, Second mounting plate; 200, Positioning mechanism; 201, Positioning rod; 2011, Positioning part; 202, Limiting plate; 203, Fixed conical part; 204, Movable conical part; 205, Limiting ring; 300, Limiting mechanism; 301, Limiting block; 302, Circular hole; 303, Mounting cavity; 304, Spring; 305, Triangular buckle. Detailed Implementation

[0022] like Figures 1 to 7As shown, this utility model relates to a flexibly adjustable upper limb prosthesis assembly, including an adjustment mechanism 100 and a positioning mechanism 200 and a limiting mechanism 300 provided on the adjustment mechanism 100. The adjustment mechanism 100 includes a mounting plate 101, a support plate 102, a first mounting plate 107 and a second mounting plate 116. A rotating disk 103 is rotatably mounted on the lower end of the mounting plate 101, and a motor 106 for driving the rotating disk 103 is provided on the upper end of the mounting plate 101. The support plate 102 is rotatably connected to the lower end of the rotating disk 103. A connecting rod 105 is provided on the lower end of the rotating disk 103. The first mounting plate 107 is mounted on the lower end of the connecting rod 105. A forearm 115 is provided on the upper end of the second mounting plate 116, and a rotating cylinder 112 is provided on the upper end of the forearm 115. The positioning mechanism 200 includes a positioning rod 201 provided on the lower end of the first mounting plate 107, and a limiting plate 202 is provided at the end of the positioning rod 201. This invention allows for flexible adjustment of the forearm angle 115, making it convenient for users to pick up items in different positions and greatly improving the autonomy and fluency of daily activities.

[0023] Specifically, the upper end of the support plate 102 is provided with a circular limiting groove, and the rotating plate 103 is located within the circular limiting groove. Both the circular limiting groove and the lower end of the rotating plate 103 have annular grooves, within which ball bearings 104 are installed. An extension hole is provided at the center of the upper end of the support plate 102, through which the end of the connecting rod 105 passes. The support plate 102 supports the rotating plate 103 and the prosthetic assembly, and can rotate in conjunction with the rotating plate 103. The ball bearings 104 effectively reduce the friction between the rotating plate 103 and the support plate 102.

[0024] Furthermore, a front electric push rod 108 and a rear electric push rod 109 are symmetrically rotatably mounted on the first mounting plate 107, and a first mounting bracket 113 and a second mounting bracket 114 are symmetrically mounted on the rotating cylinder 112. The piston rod ends of the front electric push rod 108 and the rear electric push rod 109 are rotatably connected to the first mounting bracket 113 and the second mounting bracket 114, respectively. The front electric push rod 108 and the rear electric push rod 109 operate in opposite directions to adjust the vertical angle of the forearm 115.

[0025] It is worth noting that the lower front electric push rod 110 and the lower rear electric push rod 111 are symmetrically and rotatably mounted on the second mounting plate 116. The piston rod ends of the lower front electric push rod 110 and the lower rear electric push rod 111 are rotatably connected to the first mounting bracket 113 and the second mounting bracket 114, respectively. The piston rod ends of the lower front electric push rod 110 and the upper front electric push rod 108 are staggered with those of the lower rear electric push rod 111 and the upper rear electric push rod 109. The lower front electric push rod 110 and the lower rear electric push rod 111 operate in opposite directions, and together with the upper front electric push rod 108 and the upper rear electric push rod 109, the angle of the forearm 115 can be adjusted.

[0026] It is worth mentioning that the positioning rod 201 includes a straight rod portion and a positioning portion 2011 located at the end of the straight rod portion along its long axis. The positioning portion 2011 is a downwardly curved arc shape and is semi-circular in shape. A fixed conical member 203 and a limiting ring 205 are fixedly installed on the positioning portion 2011. A movable conical member 204 is sleeved on the positioning portion 2011 between the fixed conical member 203 and the limiting ring 205. The arc-shaped positioning portion 2011 of the positioning rod 201 can not only limit the vertical angle adjustment of the forearm 115, but the fixed conical member 203 on the positioning portion 2011, in conjunction with the limiting mechanism 300, can also limit the rotation of the rotating cylinder 112. When the forearm 115 is rotated to a horizontal position while carrying an item, the movable conical member 204 and the limiting ring 205 are used to release the limit, allowing the forearm 115 to rotate downwards to adjust the angle.

[0027] It is worth noting that the limiting mechanism 300 includes limiting blocks 301 symmetrically arranged at both ends of the rotating cylinder 112. A circular hole 302 is provided at the side end of each limiting block 301. The positioning part 2011 is located within the circular hole 302. A mounting cavity 303 is provided on the upper inner wall of the circular hole 302. A spring 304 is installed within the mounting cavity 303, and a triangular buckle 305 extending into the circular hole 302 is installed at the end of the spring 304. When the forearm 115 rotates to adjust its vertical angle, the triangular buckle 305 can engage with the fixed conical part 203 to limit the forearm 115. This eliminates the need for continuous operation of the electric push rod to maintain the forearm 115 in a horizontal state when handling items, thus saving energy.

[0028] Working Principle: This embodiment provides a flexibly adjustable upper limb prosthesis assembly. The mounting plate 101 and support plate 102 are both fixedly installed within the upper arm housing. The second mounting plate 116 is fixedly installed within the forearm housing. When adjusting the angle of the forearm 115, the piston rods of the upper forward electric push rod 108 and the lower forward electric push rod 110 extend and retract synchronously. The upper rear electric push rod 109 and the lower rear electric push rod 111 operate synchronously in the opposite direction to the upper forward electric push rod 108 and the lower forward electric push rod 110, enabling vertical angle adjustment of the forearm 115. During vertical angle adjustment, positioning is achieved through the positioning part 2011. The limiting plate 202 at the end of the positioning rod 201 restricts the forearm 115 from rotating backward. The cooperation of both ensures the stability of the electric push rods. When it is necessary to retrieve items to the side, the motor 106 drives the rotating disk 103 to rotate within the circular limiting groove of the support plate 102. The connecting rod 105 at the lower end of the rotating disk 103 rotates accordingly, thereby driving the first mounting plate 107 and its connected components. The entire structure rotates, allowing for adjustment of the horizontal angle of the prosthetic component. This facilitates the retrieval of items from the side. When the prosthesis is used to move items, the forearm 115 rotates to a horizontal position. At this point, the triangular latch 305 can be pressed between the fixed conical member 203 and the movable conical member 204. The triangular latch 305, locked onto the fixed conical member 203, limits the forearm 115, maintaining its horizontal position and preventing the electric push rod from continuously operating to keep the forearm 115 horizontal. Energy is saved. When the forearm 115 needs to return to a vertical position, the forearm 115 continues to rotate upward. Under the limiting action of the limiting ring 205, the triangular buckle 305 can be squeezed into the movable cone 204 between the limiting ring 205 and the limiting ring 205. Then, the forearm 115 rotates downward so that the movable cone 204 and the fixed cone 203 can be connected, and the triangular buckle 305 can pass smoothly through the fixed cone 203, thereby releasing the limiting action on the forearm 115 and allowing the forearm 115 to return to a vertical position.

[0029] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A flexibly adjustable upper limb prosthetic assembly, characterized in that, The system includes an adjustment mechanism (100) and a positioning mechanism (200) and a limiting mechanism (300) provided on the adjustment mechanism (100). The adjustment mechanism (100) includes a mounting plate (101), a support plate (102), a first mounting plate (107), and a second mounting plate (116). A rotating disk (103) is rotatably mounted on the lower end of the mounting plate (101), and a motor (106) for driving the rotating disk (103) is provided on the upper end of the mounting plate (101). The support plate (102) is rotatably connected to... The lower end of the rotating disk (103) is provided with a connecting rod (105), the first mounting plate (107) is installed at the lower end of the connecting rod (105), the upper end of the second mounting plate (116) is provided with a forearm (115), the upper end of the forearm (115) is provided with a rotating cylinder (112), the positioning mechanism (200) includes a positioning rod (201) provided at the lower end of the first mounting plate (107), and the end of the positioning rod (201) is provided with a limit plate (202).

2. The flexibly adjustable upper limb prosthesis assembly according to claim 1, characterized in that, The upper end of the support plate (102) is provided with a circular limiting groove, the rotating plate (103) is located in the circular limiting groove, and annular grooves are provided in both the circular limiting groove and the lower end of the rotating plate (103). Ball bearings (104) are provided in the annular grooves. An extension hole is provided at the center of the upper end of the support plate (102), and the end of the connecting rod (105) passes through the extension hole.

3. The flexibly adjustable upper limb prosthesis assembly according to claim 2, characterized in that, The upper front electric push rod (108) and the upper rear electric push rod (109) are symmetrically rotatably mounted on the first mounting plate (107). The first mounting bracket (113) and the second mounting bracket (114) are symmetrically mounted on the rotating cylinder (112). The piston rod ends of the upper front electric push rod (108) and the upper rear electric push rod (109) are rotatably connected to the first mounting bracket (113) and the second mounting bracket (114) respectively.

4. The flexibly adjustable upper limb prosthesis assembly according to claim 3, characterized in that, The lower front electric push rod (110) and the lower rear electric push rod (111) are symmetrically and rotatably mounted on the second mounting plate (116). The piston rod ends of the lower front electric push rod (110) and the lower rear electric push rod (111) are rotatably connected to the first mounting bracket (113) and the second mounting bracket (114), respectively. The piston rod ends of the lower front electric push rod (110) and the upper front electric push rod (108) are staggered with those of the lower rear electric push rod (111) and the upper rear electric push rod (109).

5. The flexibly adjustable upper limb prosthesis assembly according to claim 4, characterized in that, The positioning rod (201) includes a straight rod portion and a positioning portion (2011) disposed at the end of the straight rod portion along the long axis direction. The positioning portion (2011) is a downwardly curved arc shape. The positioning portion (2011) is generally arranged in a semi-circular shape. A fixed conical member (203) and a limiting ring (205) are fixedly disposed on the positioning portion (2011). A movable conical member (204) is sleeved on the positioning portion (2011) between the fixed conical member (203) and the limiting ring (205).

6. The flexibly adjustable upper limb prosthesis assembly according to claim 5, characterized in that, The limiting mechanism (300) includes limiting blocks (301) symmetrically arranged at both ends of the rotating cylinder (112). A circular hole (302) is provided on the side end of the limiting block (301). The positioning part (2011) is located in the circular hole (302). An installation cavity (303) is provided on the upper inner wall of the circular hole (302). A spring (304) is provided in the installation cavity (303). A triangular buckle (305) extending into the circular hole (302) is installed at the end of the spring (304).

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