CN113974939A

CN113974939A - Multidirectional connection module, distribution hinge device, backrest and limb auxiliary system

Info

Publication number: CN113974939A
Application number: CN202111213144.1A
Authority: CN
Inventors: 王天
Original assignee: Hangzhou Chengtian Technology Development Co Ltd
Current assignee: Hangzhou Chengtian Technology Development Co Ltd
Priority date: 2021-10-19
Filing date: 2021-10-19
Publication date: 2022-01-28

Abstract

The invention relates to a multidirectional connection module, a distributed hinge device, a backrest and a limb auxiliary system. The multi-directional connecting module consists of two hinge plates which are oppositely arranged on the front surfaces and a hinge ball connecting arm clamped between the hinge plates; the articulated arm has a range of motion at an angle of 2 alpha relative to the jaws. The distributed hinge device is formed by connecting a plurality of groups of multidirectional connecting modules to form a distributed honeycomb structure which is mutually connected and has a 2 beta activity angle, and beta is less than or equal to alpha. The backrest consists of a plurality of groups of distributed hinge devices; the back and the armpit are formed, and the back and the armpit jointly form a special-shaped structure embracing a person. The limb auxiliary system consists of a backrest and a limb auxiliary device; the backrest is connected with the body part of the limb auxiliary device and is used for assisting the daily position transfer and limb shape correction of a person. Has the beneficial effects that: the shape and size adjustment has extremely high flexibility.

Description

Multidirectional connection module, distribution hinge device, backrest and limb auxiliary system

Technical Field

The invention belongs to the technical field of limb auxiliary devices, and particularly relates to a multidirectional connection module, a distributed hinge device, a backrest and a limb auxiliary system.

Background

Traditional thoracolumbar supports are produced according to fixed shapes, can only adapt to certain conditions, but have customized requirements for people with special upper limb postures (such as base column lateral bending) so as to adapt to different upper limb postures. For example, a person with lumbar deformity cannot use a fixed-shape thoracolumbar support. Such as: 2019221358378 discloses a buckle type thoracic and lumbar vertebra fixing brace. CN210250185U discloses adjustable chest waist brace of antiskid. All belong to finite adjustable braces. Cannot be adjusted at will.

For patients with hemiplegia or high paraplegia, the fixation of the posture of the upper limb is very important, the fixed thoracolumbar support is uniformly used, the requirement of gradually adjusting the posture of the upper limb cannot be met, and the application difficulty is high.

Limb auxiliary systems, such as exoskeleton systems of upper limbs or lower limbs, wheelchairs and the like, gradually become important rehabilitation means for central nervous lesions such as hemiplegia, paraplegia and the like, and fixed thoracolumbar supports are used in the prior art, so that the adjustment is laborious, the fitting property is poor, and the effect of fixing the posture of the upper limbs is very limited. As disclosed in CN107049711A, the wearable multifunctional exoskeleton walking support device and the control method thereof use a fixed upper limb brace.

Disclosure of Invention

To address the above-mentioned needs, the present invention provides a multi-directional link module, a distributed hinge assembly, a backrest, and a limb assist system.

The multidirectional connecting module (10) consists of two hinge plates (1) with opposite front surfaces and a hinge ball connecting arm (20) clamped between the hinge plates (1); the hinge plate (1) is provided with a plurality of outer cantilevers (2), and spherical hinge surfaces (3) are arranged on cantilever opposite surfaces (12) of the outer cantilevers (2); the hinge ball connecting arm (20) consists of a hinge ball (21) and a connecting arm (22) connected with each hinge ball (21); the hinge surfaces (3) have a radius corresponding to that of the hinge balls (21), and the hinge balls (21) are clamped between the two opposite hinge surfaces (3); the far end of the outer cantilever (2) is provided with an avoidance arc part (11) so that the connecting arm (22) has a movable range of 2 alpha angle.

Preferred embodiment 2: the surface of the hinge surface (3) is provided with a friction increasing layer (26); the surface of the hinge ball (21) is provided with a friction increasing layer (26); aiming at increasing the static friction force and the wear resistance between the hinge surface (3) and the hinge ball (21); the friction-increasing layer (26) is a coating or a surface rough structure surface.

Preferred embodiment 3: the number of the outer cantilevers (2) on the hinge plate (1) is 3-4; 2-4 hinge balls (21) are arranged on the hinge ball connecting arm (20); when 3-4 hinge balls (21) are provided, the connecting arms (20) connecting the hinge balls (21) are equal in length or unequal in length.

Preferred embodiment 4: the hinge plate (1) is centrally symmetrical, and the outer cantilevers (2) are uniformly distributed along the edge of the hinge plate (1).

Preferred embodiment 5: the spherical radius of the hinge surface (3) and the hinge ball (21) is 2-6 mm.

Preferred embodiment 6: the fastening piece (41) between the hinge plates (1) of the two pairs of locks is a primary-secondary pair screw, and the screw head and the nut head of the primary-secondary screw are screwed into the fastening groove (4).

The distributed hinge device (30) is formed by connecting a plurality of groups of multidirectional connecting modules (10) to form a distributed honeycomb-shaped structure which is mutually connected and has a 2 beta movable angle, and beta is less than or equal to alpha.

The backrest consists of a plurality of groups of distributed hinge devices (30); the back part (61) and the armpit part (62) are formed, and the back part (61) and the armpit part (62) jointly form a special-shaped structure encircling the human body (60).

Limb assistance system consisting of a backrest according to claim 5 and a limb assistance device (7); the backrest (6) is connected with a body part (70) of the limb auxiliary device (7), and the connection is fixed connection or hinged connection; the system is used to assist in the daily position transfer, limb shape correction, of a person (60).

Preferred embodiment 2: the limb auxiliary device (7) is an exoskeleton robot or a wheelchair.

The invention has the following beneficial effects:

1. the shape adjustment has extremely high flexibility;

2. the whole size is set at will and expanded infinitely.

Drawings

Fig. 1 is a front view of a hinge plate.

Figure 2 is a cross-sectional view of the hinge plate in the direction AA.

Fig. 3 is a rear view of a hinge plate.

Fig. 4A is a front view of a four ball pivot arm.

Fig. 4B is a right side view of the four ball pivot arm.

Fig. 4C is a front view of the three ball pivot arm.

Fig. 4D is a front view of the two ball pivot arm.

Fig. 4E is a three-dimensional view of a four-ball hinge ball arm.

Fig. 5 is a cross-sectional view of a multi-way junction module.

Figure 6 is a front view of the dispensing hinge assembly.

Figure 7A is a right side view of the dispensing hinge assembly.

Figure 7B is a view of the dispensing hinge assembly in use.

Fig. 8 is a view of a plurality of multi-directional connection modules connected at an angle.

Fig. 9A is a right side view of fig. 8.

Fig. 9B is a cross-sectional view taken along line CC of fig. 8.

Fig. 10A is a three-dimensional view of a plurality of multi-directional connection modules connected at an angle.

Fig. 10B is a partially enlarged view BB of fig. 10A.

Fig. 11 is a view showing a state in which the backrest is used.

Fig. 12 is a three-dimensional view of a limb assistance system.

In the figure:

1-hinge plate, 10-multidirectional connection module, 11-avoidance arc part, 12-opposite cantilever, 2-outer cantilever, 20-hinge ball connecting arm, 21-hinge ball, 22-connecting arm, 23-reinforcing disc, 24-three-split hinge arm, 25-two-split hinge arm, 26-friction increasing layer, 3-hinge surface, 30-distribution hinge device, 4-fastening groove, 40-arc hinge device, 41-fastening piece, 5-avoidance arc, 6-backrest, 60-person, 61-back part, 62-oxter part and 7-limb auxiliary device.

Detailed Description

To address the above-described needs, the present invention provides a multi-directional link module, a distributed hinge assembly, a backrest and a limb assist system, as shown in fig. 1-12.

Wherein a is preferably an angle of 15.

The hinge plate (1) and the hinge ball connecting arm (20) can be manufactured by aluminum casting or cold heading process. In particular, the friction increasing layer (26) of embodiment 2 below is provided at the position of the hinge surface (3).

The using process is as follows:

1. the two hinged plates (1) are opposite, and the two opposite hinged surfaces (3) are opposite and form the inner wall of the surface of the envelope sphere;

2. placing any hinge ball (21) between two opposite hinge surfaces (3) and adjusting the relative included angle between the connecting arm (22) and the hinge plate (1);

3. a fastener (41) passes through a hole in the center of the hinge plate, and the position between the two hinge plates (1) is fixed through locking;

4. after the fixing is applied, the hinge ball (21) is fixedly clamped between the two opposite hinge surfaces (3) and cannot move unless the locking of the fastener (41) is released.

As an alternative way:

the friction increasing layer (26) can be a rough surface formed by sand blasting, and the process is simple; but the abrasive resistance of the rough surface is not good enough, and the rough surface is easy to fail along with the prolonging of the service time;

the friction increasing layers (26) can form surfaces through processing technologies such as cold heading, casting, knurling and the like, the service life is long, but the knurling opposite surfaces between the two friction increasing layers (26) are not suitable for generating perfect occlusion;

or a rubber surface coating.

As shown in fig. 4A-4E.

Under different application scenes, the number of the outer cantilevers (2) on the hinge plate (1) can be different, and under the combined use mode, 3 hinge plates (1), 4 hinge plates or even hinge plates with more outer cantilevers (2) can exist simultaneously.

The hinge plate (1) is of a plane structure as a whole, if a structure with more complex space is required to be formed, the outer suspension arm (2) is of a space symmetrical or asymmetrical structure, and the structure is taken as an example for expanding the function of the hinge plate.

If all the hinge plates (1) are in the same non-centrosymmetric structure, the effect of the connection mode can be achieved. The difficulty of installation is slightly increased, and the size of each outer cantilever (2) can be matched.

Preferred embodiment 5: the spherical radius of the hinge surface (3) and the hinge ball (21) is 2-6 mm. The 2-6mm is only the size used when the technology is applied to a backrest and a fixed bracket close to a human body. If it is applied to other technical fields, it is not limited by such a size. If the method is applied to the field of art modeling, the size can be far larger than the size; the method is applied to model construction of chemical molecular bonds and atomic bonds, and the size can be adjusted according to requirements.

The primary and secondary screwing screws are selected, the primary and secondary screwing screws are mainly considered, after being screwed, the primary and secondary screwing screws have approximate symmetry, and the sizes of screw heads and nut heads of the primary and secondary screwing screws are basically consistent. The manufacture is simpler, namely: by arranging two identical hinge plates (1), the diversity of manufactured parts is reduced, and the overall processing cost is reduced. Other forms of fasteners may be used.

The distributed hinge device (30) is formed by connecting a plurality of groups of multidirectional connecting modules (10) to form a distributed honeycomb-shaped structure which is mutually connected and has a 2 beta movable angle, and beta is less than or equal to alpha. The angle between the multi-directional connection modules (10) is adjustable, so that the distribution hinge (30) can be formed into any arc shape to fit the shape of the human body, as shown in fig. 7B.

The backrest can be used independently as a thoracic vertebra fixing bracket, especially as a thoracic vertebra fixing bracket used by patients with nonstandard upper limb shapes. Has extremely high flexibility and can be adjusted and fastened at will.

The invention has the following beneficial effects:

1. the shape adjustment has extremely high flexibility;

2. the whole size is set at will and expanded infinitely.

In the description herein, references to the description of the terms "embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The multidirectional connecting module (10) consists of two hinge plates (1) with opposite front surfaces and a hinge ball connecting arm (20) clamped between the hinge plates (1);

the method is characterized in that:

the hinge plate (1) is provided with a plurality of outer cantilevers (2), and spherical hinge surfaces (3) are arranged on cantilever opposite surfaces (12) of the outer cantilevers (2);

the hinge ball connecting arm (20) consists of a hinge ball (21) and a connecting arm (22) connected with each hinge ball (21);

the hinge surfaces (3) have a radius corresponding to that of the hinge balls (21), and the hinge balls (21) are clamped between the two opposite hinge surfaces (3);

the far end of the outer cantilever (2) is provided with an avoidance arc part (11) so that the connecting arm (22) has a movable range of 2 alpha angle.

2. Multidirectional connection module (10) according to claim 1, characterized in that the surface of the articulation surface (3) has a friction-increasing layer (26); the surface of the hinge ball (21) is provided with a friction increasing layer (26); aiming at increasing the static friction force and the wear resistance between the hinge surface (3) and the hinge ball (21); the friction-increasing layer (26) is a coating or a surface rough structure surface.

3. A multidirectional connection module (10) according to claim 1 or 2, characterised in that the number of outer cantilevers (2) on the hinge plate (1) is 3-4;

2-4 hinge balls (21) are arranged on the hinge ball connecting arm (20); when 3-4 hinge balls (21) are provided, the connecting arms (20) connecting the hinge balls (21) are equal in length or unequal in length.

4. A multidirectional linking module (10) according to claim 3, characterised in that the hinge plate (1) is generally centrosymmetric, the outer cantilevers (2) being evenly distributed along the edges of the hinge plate (1).

5. Multidirectional connection module (10) according to claim 4, characterised in that said articulation surface (3) and said articulation ball (21) have a spherical radius of 2-6 mm.

6. Multidirectional connection module (10) according to claim 5, characterised in that the fastening means (41) between the hinge plates (1) of the two pairs of locks are male and female pairs of screws, the heads of which are screwed into the fastening grooves (4).

7. Distributed articulated installation (30), characterised in that it is formed by a plurality of groups (10) of multidirectional linking modules according to any one of claims 1 to 6, forming a distributed honeycomb structure interconnected and having an angle of action of 2 β with respect to each other, β ≦ α.

8. Backrest, characterized in that it is composed of a plurality of groups of distributed hinging devices (30) according to claim 7; the back part (61) and the armpit part (62) are formed, and the back part (61) and the armpit part (62) jointly form a special-shaped structure encircling the human body (60).

9. Limb assistance system, characterized in that it consists of a backrest according to claim 5 and a limb assistance device (7); the backrest (6) is connected with a body part (70) of the limb auxiliary device (7), and the connection is fixed connection or hinged connection; the system is used to assist in the daily position transfer, limb shape correction, of a person (60).

10. A limb assistance system according to claim 9, wherein the limb assistance device (7) is an exoskeleton robot or a wheelchair.