KR20200082635A - Elbow structure of electronic prosthetic hand - Google Patents

Abstract

The present invention provides an elbow structure, for an electronic artificial arm, which hinge-connects an upper arm and a lower arm and enables joint movement of the upper arm and lower arm about one central axis. The elbow structure for an electronic artificial arm comprises: a first connection part of which one end is connected to the lower arm and which has inside the other end a plurality of driving parts provided concentrically with and a predetermined distance away from the central axis and each having a gear on one end; and a second connection part of which one end is connected to the upper arm and which has saw tooth parts aligned in a circle so as to interlock and rotate with the gears of the plurality of driving parts in the outer direction.

Description

ELEVOW STRUCTURE OF ELECTRONIC PROSTHETIC HAND}

The present invention relates to an elbow structure of an electronic prosthesis. More specifically, the present invention relates to an elbow structure that prevents an overload in the process of gripping and transporting an object with an electronic prosthesis and makes it easier to lift the object.

In the case of a user who has cut one or both arms due to a cutting accident, the prosthesis is used for daily life. In detail, the prosthetic arm is provided in various types according to the position of the affected part, and the arm is lifted to grip the object by lifting the arm by driving the joint part using predetermined muscle strength from the prosthetic hand for cosmetic purposes having only the appearance of the hand without a driving function. Transporting prostheses have been developed. In particular, in the case of the electronic veterinary, performance close to that of a real person can be derived. However, in order to lift a heavy object like an actual hand as described above, a high-power driving means must be mounted at an elbow portion located between the upper and lower arms of the arm to provide joint motion. However, the high-power driving means for producing power by a motor or the like is difficult to store and use in the elbow part because of its large size, and even if the high-power driving means is inserted into the elbow part, the elbow part becomes enlarged, so the user Can cause a sense of rejection. In addition, noise generated in the process of generating power by the high-power driving means is a factor that causes stress in the daily life of the user. In addition, when using a mechanical elbow using a hinged connection method excluding a high-power driving means, there is a problem that it is difficult to lift a heavy object and is not easily damaged. Additionally, since the high-power driving means is rising as a cause of hindering mass production and user purchase because the manufacturing cost is high, the high-power driving means can be easily lifted without mounting the high-power driving means and the user can easily make purchase decisions. There is a need for the development of an electronic number capable of being made.

Prior Literature 1: Korean Patent Registration No. 10-1247705 (Registration on March 20, 2013) Prior Literature 2: Republic of Korea Patent Registration No. 10-0649892 (November 20, 2006 registered)

The technical problem of the present invention is to provide an elbow for receiving electrons that can easily grasp and transport a heavy object without using a driving means having a large size and noise.

In addition, the technical problem of the present invention is to provide an elbow for receiving electrons that can prevent the upper and lower parts from being bent at an excessively large angle.

In addition, the present invention has an object to prevent the overload from being concentrated when the load is concentrated when lifting the lower part in a state in which the upper and lower parts are arranged in a straight line.

To this end, the present invention is an elbow structure of an electronic prosthesis that hinges the upper and lower parts and articulates the upper and lower parts based on one central axis, one end connected to the lower part and a predetermined distance from the central axis inside the other end A first connection part provided on a concentric circle spaced apart, and a first connection part provided with a plurality of driving parts having gears at one end, and one end connected to the upper arm part, and teeth arranged in a circular shape to rotate in engagement with the gears of the plurality of driving parts in an outer direction. It provides an elbow of an electron number including a second connection portion to be formed.

According to the present invention, since the first connecting portion performs the first rotational movement and the second rotational movement using the driving unit and the gear while the second connecting unit is fixed, the object can be easily gripped and transported.

In addition, since the present invention is provided with a plurality of driving units, there is no need to use a high-power driving means, so that the elbow portion of the electronic prosthesis can be miniaturized and simplified, and noise can be minimized to minimize user inconvenience.

1 is a view showing the entire elbow of the former according to an embodiment of the present invention.
2 is a view showing a first connection portion and a second connection portion according to an embodiment of the present invention.
3 is a view showing a first connection portion and a second connection portion according to an embodiment of the present invention.
4 is a cross-sectional view of a first connection portion and a second connection portion according to an embodiment of the present invention.
5 is a view showing the joint movement of the first connection portion according to an embodiment of the present invention.
6 is a cut perspective view showing a support gear and a mainspring according to an embodiment of the present invention.
7 is a view showing a support gear and a mainspring spring according to an embodiment of the present invention.
8 is a view showing that the mainspring spring is wound by the rotation of the support gear according to an embodiment of the present invention.
9 is a view showing the rotational motion of the gear when lowering the upper arm according to an embodiment of the present invention.
10 is a view showing an intaglio portion, a contact portion, and a recognition portion according to an embodiment of the present invention.
11 is a view showing the surface contact of the intaglio portion and the contact portion when the upper and lower parts are arranged in a straight line according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains may easily practice. However, the present invention can be implemented in many different forms and is not limited to the embodiments disclosed below. In addition, in order to clearly disclose the present invention in the drawings, parts irrelevant to the present invention are omitted, and the same or similar reference numerals in the drawings indicate the same or similar components.

The objects and effects of the present invention may be naturally understood or more apparent by the following description, and the objects and effects of the present invention are not limited only by the following description.

The objects, features and advantages of the present invention will become more apparent through the following detailed description. In addition, in the description of the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing the entire elbow of the former according to an embodiment of the present invention. Before explaining the present invention in detail, the "one side direction" described in the present invention means the lower right direction in FIG. 1. In detail, “one side direction” refers to the left direction from the user's perspective when the electronic prosthesis used for the left arm shown in FIG. 1 is worn. In addition, the "other side direction" refers to the right direction toward the right arm based on the user wearing the above electronic number as the upper left direction of FIG. 1. In addition, "upper direction" and "downward direction" refer to the upper direction and the lower direction, respectively, in the drawings, unless otherwise specified. In addition, "front" refers to the direction toward the lower part 200 according to the present invention. In detail, “front” refers to a direction in which one end of the lower arm 200 formed with a separate finger portion at one end, and “rear” refers to an opposite direction of “front”. In addition, “one central axis (z)” refers to the central axis of the second connection unit 400 in FIG. 1. In detail, “one central axis (z)” refers to the central axis of the second connection portion 400 having a circular cross section of the second connection portion 400 hingedly connecting the upper portion 100 and the lower portion 200. Therefore, the upper arm portion 100 and the lower arm portion 200 may exercise joints based on one central axis z. In addition, the "first rotational motion (s1)" is that the lower part 200 rotates so that the angle between the upper part 100 and the lower part 200 increases, and the "second rotational motion s2" is lower The thin portion 200 is rotated to approach the upper thin portion 100. That is, when the lower portion 200 performs the first rotational movement s1, the upper portion 100 and the lower portion 200 are opened, and during the second rotational movement s2, the upper portion 100 and the lower portion 200 200) is closed to close.

The electronic prosthesis according to the present invention includes a lower connection portion 200 for holding an object, a first connection portion 300 connected to one end of the lower portion 200, and a second connection portion 400 connected to the first connection portion 300 And an upper arm portion 100 connected to one end of the second connection portion 400.

As described above, the lower part 200 is configured to lift or transport an object or the like. To this end, the lower part 200 is formed in the same shape as a real person's hand. In detail, a separate finger portion is formed at one end of the lower arm portion 200 and the other end is connected to the first connection portion 300. In addition, the lower part 200 is formed to have a range from a real person's hand to an elbow part. Accordingly, as the lower part 200 is articulated through the rotational movement of the first connection part 300, the height of the gripped object can be adjusted by varying the angle with the upper part 100. In detail, the lower part 200 increases the angle between the upper parts 100 by the first rotational motion s1 by the first connection part 300 and the second connection part 400, and the second rotational motion s2 As it is lifted, the angle between the upper arm portions 100 decreases.

The upper portion 100 is connected to the second connection portion 400 for rotating the lower portion 200, and supports the lower portion 200 from a human body. To this end, one end of the upper arm portion 100 is connected to the human body or the affected portion, and the other end is connected to one end of the second connecting portion 400 to be described later. That is, the upper arm portion 100 has a range from the human affected area to the elbow. Therefore, the second connecting portion 400 is fixed in the lower direction of the upper arm portion 100 through the fastening and rotational movement with the first connecting portion 300, the lower portion 200 is the first rotational movement (s1) and the first Two rotational motions (s2) can be performed.

2 is a view showing the first connection unit 300 and the second connection unit 400 according to an embodiment of the present invention, Figure 3 is a first connection unit 300 and the second connection unit according to an embodiment of the present invention 400 is a view showing the first connection portion 300 and the second connection portion 400 according to an embodiment of the present invention.

The present invention discloses the first connecting portion 300 and the second connecting portion 400 to solve the problems of the configuration of the prior art. In detail, a conventional electron receiving elbow uses a plurality of connecting means formed in a rod shape to jointly move the upper arm portion 100 and the lower arm portion 200. However, the plurality of connecting means has a problem in that, when gripping and transporting a heavy object, it is easy to bend or break due to the load of the object. In detail, when the object located in the lower direction of the electronic prosthesis is lifted in the upper direction, the stress received by the elbow portion of the electronic prosthesis is the distance between one end and the other end of the lower arm 200 and the weight of the object It is determined by the product of. Here, a person with a large height increases the amount of rotational moment and stress according to the rotation of the elbow part because the length of the lower part 200 required for this is large, which increases the probability that the elbow part is overloaded and damaged. This is a major factor in the increase. In addition, while moving one end of the lower part 200 in the downward direction to move the gripped object in the downward direction, the movement in the upward direction of the object increases with the height from the ground to the object, so the object with greater force You must grip and support. The conventional electron number described above has a problem in that it is difficult to lift an object in the above situation. Although there is a method of rotating the lower part 200 through a separate driving means, a high-power driving means is required for this, and the high-power driving means is large in size, so it is difficult to be installed on the elbow part of the electronic number. Have Accordingly, the present invention discloses an elbow for accepting electrons that can easily lift an object, prevent damage, and replace a large driving means to solve a person's dislike.

”단면 형상을 갖는다. 상세하게, “

”단면 형상에서 좌측 방향을 향하는 부분은 제1 연결부(300)의 일단으로서 하박부(200)와 연결된다. 또한, “

”단면 형상에서 우측 방향을 향하는 부분은 제2 연결부(400)의 타단이다. 이에 따라, 제1 연결부(300)는 하박부(200)와 연결된 상태에서 후술할 구동부(320)와 연결된 기어(321) 및 톱니부(410) 간 연결 및 회전운동에 대응하여 제1 회전 운동(s1) 및 제2 회전 운동(s2)할 수 있다. 또한, 본 발명에서 선술한 제1 연결부(300)의 단면 형상은 한정되지 않고 하박부(200)와 견고하게 연결될 수 있도록 일단이 원호 형상 등으로 다양하게 형성될 수 있다. The first connection part 300 is connected to the lower part 200 and jointly moves the upper part 100 and the lower part 200 through the power produced by the driving part 320. In detail, the first connection part 300 is engaged with the tooth part 410 of the second connection part 400, the gear 321 connected to the driving part 320 being connected to the other end of the lower part 200. As the rotational movement, the upper part 100 and the lower part 200 are jointly moved. That is, the first connection part 300 is configured to connect the upper and lower parts 100 and the lower part 200 and simultaneously perform the first and second rotational motions s1 and s2. . To this end, one end of the first connecting portion 300 is connected to the lower portion 200. In detail, when the first connection part 300 is viewed from one side direction to the other side direction, “

It has a cross-sectional shape. in detail, "

In the cross-sectional shape, the part facing the left direction is connected to the lower part 200 as one end of the first connection part 300. Also, "

”In the cross-sectional shape, the part facing the right direction is the other end of the second connection part 400. Accordingly, the first connecting portion 300 is connected to the lower part 200 in the state connected to the driving unit 320, which will be described later, the gear 321 and the tooth 410, the first rotational movement corresponding to the connection and rotational movement ( s1) and the second rotational movement (s2). In addition, the cross-sectional shape of the first connection portion 300 described in the present invention is not limited, and one end may be variously formed in an arc shape or the like so as to be firmly connected to the lower portion 200.

The first connection part 300 is provided with an insertion groove 310. The insertion groove 310 is configured to provide a space for the driving unit 320 to be described later. To this end, the insertion groove 310 is formed on one side of the first connection portion 300. In detail, the insertion groove 310 is formed to open from one side of the first connection part 300 to the other side direction. Through the indentation groove 310 formed as described above, the driving unit 320 is easily disposed and can be easily supplied with power to the gear 321 in the state inserted into the insertion groove 310, and ultimately the lower part ( The first rotational motion s1 and the second rotational motion s2 of 200) can be realized. In addition, a plurality of insertion grooves 310 is provided. This is to facilitate outputting for rotational movement of the lower part 200 as a plurality of driving parts 320 are inserted and driven at the same time. It is preferable that the plurality of insertion grooves 310 formed in correspondence with the plurality of driving units 320 should be provided to correspond to the shape and size of the driving unit 320. Referring to FIG. 2 as an example, a plurality of driving parts 320 are formed in a rectangular parallelepiped shape, and the insertion groove 310 is a driving part 320 such that the inserted driving part 320 does not deviate outside the first connection part 300. It is formed corresponding to the size of. As a more preferred embodiment, the plurality of insertion grooves 310 are provided to have a circular arrangement. In detail, the plurality of insertion grooves 310 are arranged on concentric circles spaced apart in the outer direction by a predetermined distance h based on one central axis z (see FIG. 4 ). In more detail, the plurality of insertion grooves 310 are formed on the concentric circles, but are spaced apart to have a predetermined call spacing, and the predetermined call spacings are provided to be the same between the plurality of insertion grooves 310. Accordingly, the driving unit 320 inserted into the insertion groove 310 can rotate the gear 321, which will be described later, with a force of a uniform size, thereby performing the first rotational movement s1 and the second rotational movement s2. When the lower part 200 is moved, a stuttering phenomenon may be prevented. That is, the insertion groove 310 is formed so that the driving unit 320 can be disposed more firmly, so that the gear 321 to be described later can be easily rotated without being shaken, which is the upper arm 100 and the lower arm 200 ) Can significantly increase the safety for joint movement.

As a more preferred embodiment, the plurality of insertion grooves 310 may be formed on the other side of the first connection part 300. In detail, the plurality of insertion grooves 310 formed on the other side of the first connection portion 300 is provided to have the same circular arrangement as the insertion groove 310 provided on one side of the first connection portion 300 and the driving portion It is formed to correspond to the size and shape of 320. Here, the plurality of insertion grooves 310 provided on one side and the other side of the first connection part 300 are sequentially arranged so that the internal spaces do not merge with each other. That is, the insertion groove 310 is provided so that the plurality of driving parts 320 respectively inserted from one side and the other side of the first connection part 300 do not contact each other. For example, when viewing the first connection unit 300 from one side direction to the other side direction, the driving unit 320 provided on one side of the first connection unit 300 includes a pair of driving units provided on the other side ( 320). Through this, a plurality of gears 321 that rotate in one-to-one connection with the plurality of driving units 320 have uniform output and can be prevented from being damaged by contact with each other. In addition, compared to the insertion groove 310 is provided only in one side direction of the first connection part 300, it can accommodate more driving parts 320, which means the upper part 100 and the lower part 200. By reducing the output of each driving unit 320 required for joint movement, it has the effect of significantly reducing noise or easily gripping and transporting heavy objects.

The driving unit 320 is configured to finally realize joint motion between the upper arm portion 100 and the lower arm portion 200 by rotating the gear 321 to be described later. To this end, the driving unit 320 may be provided with driving means, such as a motor, which is driven by receiving power from a separate battery or the like and has one end formed in a rod shape. In addition, the driving unit 320 is inserted into the insertion groove 310 and positioned. In detail, the driving part 320 is formed to correspond to the size and shape of the insertion groove 310 formed on one side and the other side of the first connection part 300. Accordingly, the driving unit 320 may be prevented from being detached while being inserted into a plurality of insertion grooves 310 formed on one side and the other side of the first connection unit 300, which is connected to the gear 321 It is possible to derive the effect of preventing the warpage of one end of the driving unit 320 formed in a rod shape. In addition, the plurality of driving units 320 are divided into a first driving group 320a and a second driving group 320b. In detail, the plurality of driving units 320 include a first driving group 320a in which a plurality of driving units 320 located in one side direction (meaning the right direction in FIG. 4) based on the first connection unit 300 and It is divided into a second driving group 320b in which a plurality of driving units 320 provided in other side directions (meaning the left direction in FIG. 4) are collected. As described above, the plurality of driving units 320 divided into the first driving group 320a and the second driving group 320b are driven for each group to produce a more uniform output, thereby providing a gear 321 connected to one end. It can be rotated. That is, since the first driving group 320a and the second driving group 320b are provided, the lower arm 200 and the upper arm 100 can be easily articulated so that a person wearing an electronic prosthetic feels unpleasant. Convenience can be increased by avoiding this.

Gear 321 is provided at one end of the driving unit 320. The gear 321 is configured to jointly move the upper arm portion 100 and the lower arm portion 200 by rotating by the driving portion 320 in the engaged state with the tooth portion 410 to be described later. To this end, the gear 321 is formed in a spur gear shape and is connected to one end of the driving unit 320 formed in a rod shape. In addition, the outer circumferential surface of the gear 321 is provided to mesh with the toothed portion 410 and the support gear 321 provided in the second connecting portion 400 to be described later. Accordingly, the gear 321 is rotated by the driving unit 320 while the first rotational movement (s1) and the second rotational movement (s2) along the teeth 410, the lower part 200 and the upper part 100 The angle of the liver can be adjusted. A more detailed description of this will be described later after describing the teeth 410 and the support gear 420.

The second connection part 400 is configured to rotate the gear 321 provided in the first connection part 300 so that the lower part 200 performs the first rotational motion s1 and the second rotational motion s2. To this end, one end facing the rear of the second connecting portion 400 is fixed to be connected to the upper arm portion 100, and the other end positioned in front of the upper arm portion 100 is formed to have a circular cross-sectional shape. In addition, the other end of the second connection part 400 is located in one side direction and the other side direction of the first connection part 300. In addition, the other end of the second connecting portion 400 is provided with a toothed portion 410 engaged with the aforementioned gear 321 to rotate the gear 321. In detail, the gear part 321 connected one-to-one with the plurality of driving parts 320 in a state where one end of the second connection part 400 is connected to the upper arm part 100 and fixed, the gear part 410 in the state engaged with the tooth part 410 As it rotates along 410, the lower part 200 may be rotated.

The toothed portion 410 is configured to provide a path for the first gear 321 to be rotated by the driving unit 320 for the first rotational movement s1 and the second rotational movement s2. In detail, a path is provided for the gear 321 to rotate in engagement with the teeth 410 located in the outer direction of the gear 321. To this end, the tooth portion 410 is provided inside the second connection portion 400. In detail, the tooth portion 410 is formed on the inner surface of the second connection portion 400. More specifically, the tooth portion 410 is formed such that a plurality of teeth are arranged in a circular shape, but is arranged to face the inner direction with respect to one central axis z. Accordingly, the tooth 410 is formed in the outer direction of the plurality of gears 321. In addition, the toothed portion 410 is provided and fixed to the second connecting portion 400 which is connected to and fixed to the upper arm portion 100. Accordingly, the gear 321 is rotated by the driving unit 320 in a state of being engaged with the tooth 410, the first rotational movement (s1) and the second rotational movement (s2) about one central axis (z) Can. To this end, it is preferable that the tooth portion 410 should be provided to engage with the gear 321. In addition, as the second connection part 400 is provided in one side direction and the other side direction of the first connection part 300, the toothed part 410 is also provided in one side direction and the other side direction of the first connection part 300. . In detail, the toothed portion 410 is a first toothed portion 410a provided in the first connection portion 300 positioned in one side direction based on the first connection portion 300 and a first connection portion located in the other side direction It is divided into a second toothed portion (410b) provided in (300). Through this, the first toothed portion 410a and the second toothed portion 410b are respectively in the first drive group 320a and the second drive group 320b located in both side directions of the first connection portion 300, respectively. Engaging with the gear 321 to be connected, the gear 321 is rotated by the driving unit 320, and is centered around one central axis z along the first teeth 410a and the second teeth 410b. By rotating, the lower part 200 can be subjected to the first rotational movement s1 and the second rotational movement s2.

The second connection part 400 is further provided with a first fastening groove 401. The first fastening groove 401 is a configuration that allows the support gear 420, which will be described later, to be easily rotated around one central axis z while being fixed inside the second connection part 400. To this end, the first fastening groove 401 is engraved from one side and the other side of the second connection portion 400. To illustrate the second connecting portion 400 located in one side direction of the first connecting portion 300 as an example, the first fastening groove 401 is formed by opening from one side of the second connecting portion 400 facing in one side direction. do. Here, as the first protrusion 421 provided in the support gear 420, which will be described later, is inserted into the first fastening groove 401, the support gear 420 is located inside the second connection part 400, but the first It may be provided to be located in the inner direction of the tooth portion (410a). The first fastening groove 401 is provided, and the first projection 421 is inserted into the first fastening groove 401 so that the support gear 420 is located in the inner direction of the tooth 410, so that the gear 321 is formed. Can be more easily rotated by the support gear 420 located in the inner direction.

The support gear 420 supports the gear 321 so that the gear 321 is easily rotated. In detail, when the support gear 420 is positioned in the inner direction of the gear 321, the gear 321 is easily rotated in engagement with the support gear 420. To this end, the support gear 420 is provided on the second connection part 400. In detail, the support gear 420 is provided inside the second connection part 400 positioned in both side directions of the first connection part 300, respectively, in one side direction and the other side direction of the support gear 420. The located first protrusion 421 is positioned to be inserted into the first fastening groove 401 provided in the aforementioned second connection part 400. Accordingly, a plurality of gears 321 and teeth 410 are positioned in the outer direction of the support gear 420, and the gears 321 are positioned between the teeth 410 and the support gear 420 to mesh with each other. All. Further, the central axis z of the support gear 420 is provided to coincide with one central axis z. Accordingly, the support gear 420 rotates about one central axis z. If the lower part 200 is described as an example of the first rotational movement s1 (FIG. 9), the gear 321 is rotated by the second rotational movement s2 by the driving of the driving unit 320 and the support gear 420 ) Corresponds to the rotational movement of the gear 321 as described above, the first rotational movement (s1). That is, the support gear 420 is engaged with the gear 321 located in the outer direction so that the gear 321 is easily rotated by rotating in a direction opposite to the rotation direction of the gear 321. In addition, the gear 321 is in a fixed state and moves around one central axis z along the tooth portion 410 located in the outer direction. Accordingly, the lower part 200 connected to the first connection part 300 performs the first rotational motion (s1).

The gear 321, the toothed portion 410 and the support gear 420 are positioned in engagement between the gear and the driving gear 320 according to the driving of the gear 321 and the support gear 420 according to the rotation of the upper arm ( 100) and the lower part 200 can be easily articulated. In addition, by positioning a plurality of driving units 320 having low noise during the driving process, excessively loud noise is generated in the process of placing the lower arm 200 in the first rotational movement s1 and the second rotational movement s2. Since it can be prevented from occurring in advance, the discomfort of the electronic prosthetic wearer can be blocked in advance. In addition, even if a problem in which any one of the plurality of driving units 320 does not drive occurs, since the remaining driving unit 320 is driven to rotate the gear 321, the upper arm 100 and the lower arm ( 200) can minimize the malfunction that can occur during the joint exercise process. In addition, by providing a plurality of driving units 320, it is possible to replace the high-power driving means, dramatically reducing the production cost, and preventing the elbow portion of the electronic prosthesis from being enlarged. It can minimize the user's feeling of rejection.

The plate portion 330 is configured to support the gear shaft of the driving portion 320. In detail, the plate part 330 prevents one end of the driving part 320 formed in a rod shape from being twisted in the rotation process, thereby ultimately facilitating the first rotational motion s1 and the second rotational motion of the gear 321 ( s2). To this end, the plate portion 330 is provided in a plate shape and is located in both side directions of the first connection portion 300 and is located between the first connection portion 300 and the second connection portion 400. In detail, the plate portion 330 is positioned on the first connection portion 300 but is provided as a pair and disposed in one side direction and the other side direction of the first connection portion 300, respectively.

The plate portion 330 includes a distortion preventing portion 331 that is formed to correspond to a gear shaft (meaning one end formed in a rod shape of the driving portion 320) of the driving portion 320. A plurality of distortion preventing parts 331 are provided and are formed to be opened to penetrate the plate part 330. Accordingly, one end of the driving unit 320 is connected to the gear 321 in a state inserted to penetrate the distortion preventing unit 331, the gear 321 is the opposite direction of the driving unit 320 with respect to the plate portion 330 Is located in Accordingly, it is possible to prevent the gear shaft of the driving unit 320 from being distorted or the gear 321 from being unintentionally displaced in one side direction and the other side direction during the rotation of the gear 321 due to the driving of the driving unit 320. have. In addition, the support gears 420 located in both side directions of the first connection portion 300 are plate portions in a state where the first protrusion 421 is inserted into the first fastening groove 401 and positioned inside the second connection portion 400. It is located in one side direction and the other side direction of (330). Therefore, it is possible to prevent the support gear 420 from separating from the inside of the second connection part 400, and ultimately, the gear 321 can be more firmly supported and rotated.

As a more preferred embodiment, the plate portion 330 is further provided with a through groove 332. The through groove 332 allows the arrangement part 340 provided with the winding spring 350 to be described later to be wound through the plate part 330 to be engaged with the support gear 420. To this end, the through groove 332 is formed in the plate portion 330, the diameter of the through groove 332 is formed to be larger than the diameter of the arrangement portion 340. Accordingly, the placement portion 340 is fastened and fixed to the support gear 420 by passing through the plate portion 330, whereby the support gear 420 and the placement portion 340 integrally perform the first rotational movement (s1). Therefore, the spring 350 can be wound. A more detailed description of the winding process of the winding spring 350 will be described later in FIGS. 6 to 9.

6 is a cut-away perspective view showing a support gear 420 and a spring spring 350 according to an embodiment of the present invention, and FIG. 7 is a support gear 420 and a spring spring 350 according to an embodiment of the present invention It is a figure showing. 6 is a first connection part 300 to indicate the fastening of the placement part 340 and the support gear 420 and the insertion and fixation of the first protrusion 421 and the first fastening groove 401 of the support gear 420. ) Shows a cross-section by cutting the arrangement part 340, the plate part 330, the support gear 420 and the second connection part 400 provided in one side direction.

The first fixing groove 301 is a configuration for positioning the spring spring 350, which will be described later, inside the first connection part 300. To this end, the first fixing groove 301 is provided on one side and the other side of the first connection part 300, respectively, and is formed corresponding to the shape of the mainspring spring 350 such that one end of the mainspring 350 is inserted. In detail, the first fixing groove 301 is provided in a “b”-shaped bent shape to be formed intaglio from one side and the other side of the first connecting portion 300, and one end of the spring spring 350 has a first fixing groove ( 301), thereby being connected to the first connection unit 300. The first fixing groove 301 having a cross-sectional shape bent with a “b” shape is provided, so that the spring spring 350 is firmly positioned in a state where one end is inserted into the first fixing groove 301. Therefore, the spring spring 350 does not deviate from the inside of the first connection part 300, it is possible to compensate for the force required in the process of bending the lower part 200 by the second rotational movement (s2), through which high weight It is possible to prevent the overload in the driving unit 320 when lifting the object. Particularly, the first fixing groove 301 provided to be bent with a “b” has an effect of easily maintaining a fixed state once the winding spring 350 is wound.

The arrangement part 340 positions the mainspring 350 in the first connection part 300 and serves to wind or unwind the mainspring spring 350 in response to the rotational movement of the gear 321. To this end, one end of the arrangement part 340 is provided in a disk shape, passes through the through groove 332 described above, and the mainspring 350 is wound and positioned at the other end. In detail, the arrangement part 340 has one end facing the second connecting part 400 and the other end facing the first connecting part 300 are formed in the shape of a disk and a rod, respectively, and the diameter of one end is formed to be larger than the diameter of the other end. Through this, in the process of winding or unfolding the mainspring spring 350, it can be prevented from being separated in the direction of the second connection part 400 by being blocked by one end of the placement part 340. As a more preferred embodiment, a second protrusion 341 for fastening and fixing with the support gear 420 may be further provided at one end of the placement part 340. In detail, the second protrusion 341 is provided in a disc shape and is provided in plural and positioned to have a circular arrangement around one central axis z. In addition, the second protruding portion 341 is inserted into one side and the other side of the support gear 420 facing the first connection portion 300 to integrally rotate the placement portion 340 and the support gear 420. The second fastening groove 422 is provided to enable the further. In detail, the other side of the support gear 420 positioned in one side direction of the first connection part 300 and the second side fastened to one side of the support gear 420 located in the other side direction of the first connection part 300 Each of the grooves 422 is provided. The second fastening groove 422 is provided with the same diameter as the diameter of the second protrusion 341 to prevent the second protrusion 341 from being detached. As described above, the placement part 340 rotates integrally with the support gear 420 as the second protrusion 341 is positioned to be inserted into the second fastening groove 422, and corresponds to the rotation of the support gear 420. Winding spring 350 can be bent or unfolded. A more detailed description of the process of bending or unfolding the mainspring spring 350 will be described later in FIG. 8.

A second fixing groove 342 for inserting and fixing the other end of the spring spring 350 is further provided at the other end of the placement unit 340. The second fixing groove 342, like the first fixing groove 301, has a function of fixing the mainspring spring 350 so as not to deviate in the process of bending or unfolding the mainspring spring 350. To this end, the second fixing groove 342 is engraved from the outer circumferential surface of the other end of the placement portion 340, and the other end of the mainspring 350 is inserted into and fixed to the second fixing groove 342. Through this, one end and the other end of the spring 350 are inserted into the first fixing groove 301 and the second fixing groove 342, respectively, and are fixed by the first rotational movement s1 of the support gear 420. By bending or unfolding by the second rotational motion s2, the lower part 200 prevents excessively the first rotational motion s1 and the lower part 200 takes the second rotational motion s2 You can assist the power to become.

The spring spring 350 is configured to compensate for the force required when the lower part 200 is rotated. In detail, the spring spring 350 reduces the output of the driving part 320 required when the lower part 200 is lifted while the upper part 100 and the lower part 200 are located in a straight line, thereby driving the part Prevent overload of 320. To this end, the spring spring 350 is provided to have a restoring force. In detail, the spring spring 350 is provided to unfold using a restoring force in a bent state. In addition, as one end of the spring spring 350 is inserted into the first fixing groove 301 described above and the other end is inserted into the second fixing groove 342, both ends of the spring spring 350 are fixed. As described above, as the support gear 420 moving integrally with the arrangement part 340 while the mainspring spring 350 is fixed is engaged with the gear 321 in the first rotational movement (s1), the mainspring spring 350 is It is bent and wound. In addition, the wound spring 350 is unfolded using the restoring force as the support gear 420 engaged with the gear 321 rotates second (s2), and assists the output of the driving unit 320 in this process. It can be compensated for the force required to bend the upper and lower parts 100 and 200. 8 will be described in more detail with respect to the compensation action of the spring spring 350 as described above.

8 is a view showing the winding spring 350 is wound by the rotation of the support gear 420 according to an embodiment of the present invention, Figure 9 is the upper arm portion 100 according to an embodiment of the present invention It is a view showing the rotational movement of the gear 321 when lowering. 8 shows that the mainspring spring 350 is wound, and the plate portion 330 and the placement portion 340 are oriented so as to face the directions from the first connection portion 300 to the plate portion 330 and the second connection portion 400. And a spring spring 350. That is, the rotation of the placement unit 340 illustrated in FIG. 8 is a first rotational movement (s1), which is performed when the angle between the upper edge portion 100 and the lower edge portion 200 increases as shown in FIG. 9 ( 340).

In the state in which the second protrusion 341 provided in the placement portion 340 is inserted into the second fixing groove 342 provided in the support gear 420, the gear 321, as shown in FIG. 9, has a tooth portion 410 According to the second rotational motion (s2) (meaning the rotation in the clockwise direction of FIG. 9), the lower part 200 is the first rotational motion (s1) (meaning counterclockwise rotation in FIG. 9) and , The gear 321 and the support gear 420 engaged with the first rotational movement (s1). Here, the arrangement unit 340 moving integrally with the support gear 420 performing the first rotational movement s1 refers to the first rotational movement s1 (meaning clockwise rotation of FIG. 8) as shown in FIG. 8. Therefore, the mainspring 350 having one end and one end inserted and fixed into the first fixing groove 301 and the second fixing groove 342, respectively, is wound in correspondence with the first rotational movement s1 of the placement unit 340. .

On the other hand, in the operation of lifting the lower arm portion 200 to bend the upper arm portion 100 and the lower arm portion 200, the gear 321 first rotational movement s1 along the tooth portion 410 (counterclockwise in FIG. 9) (Referring to rotation in the direction), and the support gear 420 engaged with the gear 321 and the arrangement part 340 provided in the support gear 420 is a second rotational movement s2 (clockwise in FIG. 8) Rotation). Here, the spring spring 350 is bent and generates a restoring force to be unfolded, so that the supporting part 340 connected to the other end and the supporting gear 420 connected to the placing part 340 are easily rotated in the second rotation (s2). To compensate for the power. Therefore, the output that the driving unit 320 needs to generate in order to lift the lower arm unit 200 may be assisted so that the overload of the driving unit 320 can be prevented. That is, the output required from the driving unit 320 increases as the potential energy increases in response to a height at which the object is spaced apart from the ground in the process of moving the object in the upper direction in the state where the lower part 200 grips the object. By compensating the force through the restoring force of the spring 350, it is possible to prevent the driving unit 320 from being driven with an excessively large output.

Through the above-described configuration and operation, the driving unit 320 does not need to be driven with a larger output when lifting an object, thereby preventing damage due to overheating. In addition, since the auxiliary output for easily bending the lower part 200 is not performed by a driving means such as a motor, but is performed by the restoring force of the mainspring 350, the noise is minimized so that the user may not feel uncomfortable. Quality can be improved. In addition, the driving unit 320 can perform this with the same size of output without discriminating when the upper arm portion 100 and the lower arm portion 200 are positioned in a straight line and when the lower arm portion 200 is lifted. , Since it is possible to omit a separate control means for controlling the output of the driving unit 320, it is easy to simplify and reduce the number of electrons.

10 is a view showing an intaglio portion 402, a contact portion 360, and a recognition portion 370 according to an embodiment of the present invention, and FIG. 11 is an upper portion 100 and a lower part according to an embodiment of the present invention. It is a view showing the surface contact of the intaglio portion 402 and the contact portion 360 when the thin portion 200 is disposed on a straight line. FIG. 10 omits and expresses the second connecting portion 400 to easily illustrate the intaglio portion 402, the contact portion 360, and the recognition portion 370, and FIG. 11 shows the intaglio portion 402 and the recognition portion 370 ) In order to express the contact, the intaglio portion 402 and the contact portion 360 are enlarged and illustrated in a state where the upper arm portion 100 and the lower arm portion 200 are arranged in a straight line.

In the conventional electronic prosthesis, the angle between the upper arm portion 100 and the lower arm portion 200 is excessively increased during the joint exercise process of the upper arm portion 100 and the lower arm portion 200, and the lower arm portion 200 is bent. There is a problem to grasp and control it. That is, in the case of a user with poor eyesight, as the lower part 200 is excessively bent, it is difficult to prevent the load concentration phenomenon and damage of the elbow part due to an increase in the load on the object held by the lower part 200. The present invention discloses an intaglio portion 402, a contact portion 360, and a recognition portion 370 that can solve such problems.

The intaglio portion 402 is configured to detect the arrangement of the upper thin portion 100 and the lower thin portion 200 in a straight line as it contacts the contact portion 360 to be described later. In detail, when the contact part 360 to be described later comes into contact with the intaglio part 402, the recognition part 370 connected to the contact part 360 recognizes this and the upper arm part 100 and the lower arm part 200 are arranged as dates. It should be considered as. To this end, the intaglio portion 402 is provided on the second connection portion 400. In detail, the intaglio portion 402 is provided in the outer direction of the second connection portion 400, but is formed in a predetermined depth from the second connection portion 400. Here, the intaglio portion 402 is formed to make a surface contact with the contact portion 360 when the upper thin portion 100 and the lower thin portion 200 are positioned in a straight line. In detail, the intaglio portion 402 is not moved in a state provided in the second connection portion 400 and remains fixed, and the contact portion 360, which will be described later, is the first rotational movement s1 of the lower part 200 and When moving integrally in response to the second rotational movement (s2), the upper arm portion 100 and the lower arm portion 200 are positioned to be in a straight line so that one end of the lower arm portion 200 faces the front side, and the intaglio portion 402 ). Through this, the recognition unit 370 may recognize the surface contact of the intaglio portion 402 and the contact portion 360 to detect the arrangement state of the upper and lower portions 100 and 200. To this end, it is preferable that the position of the intaglio portion 402 should be determined so that the contact portion 360 can contact the intaglio portion 402 when the upper portion 100 and the lower portion 200 are positioned on a date. In detail, the intaglio portion 402 is provided in the lower direction of the second connection portion 400 to make a surface contact with the contact portion 360 integrally moving with the lower portion 200 through the first rotational movement s1. .

As another embodiment of the present invention, the intaglio portion 402 may be further provided in the upper direction of the second connection portion 400. This is to prevent the lower arm 200 from which the angle with the upper arm 100 decreases excessively with the upper arm 100 through the second rotational movement s2. In detail, the intaglio portion 402 further provided on the upper side of the second connection portion 400 maintains a fixed state, and the contact portion 360 provided on the first connection portion 300 is the second rotational movement of the lower portion 200 In the case of the second rotational movement s2 about one central axis z corresponding to (s2), the contact portion 360 moves to and is inserted into the intaglio portion 402 located in the upper direction of the second connection portion 400 And a surface contact, and the recognition unit 370 senses the upper arm 100 and the lower arm 200 to be bent and positioned.

The contact part 360 performs a surface contact with the intaglio part 402 so that the recognition part 370, which will be described later, can grasp the arrangement state of the upper and lower parts 100 and 200. To this end, the contact portion 360 is provided in one side direction and the other side direction of the first connection portion 300 and is located in front of the second connection portion 400. In addition, the contact portion 360 has a “<” cross-sectional shape provided at both ends to face the upper and lower directions of the second connection portion 400. Through this, both ends of the contact portion 360 correspond to the first rotational movement (s1) and the second rotational movement (s2) of the lower arm portion 200 around one central axis (z), and the outer peripheral surface of the second connecting portion 400 Move along. As a more preferred embodiment, separate rollers are further provided at both ends of the contact portion 360 to move more easily along the outer circumferential surface of the second connection portion 400. Also, the contact part 360 is connected to the recognition part 370. In detail, the recognition unit 370, which will be described later, is provided on the first connection unit 300, is located in front of the contact unit 360, and is connected to both ends of the contact unit 360. Here, the contact portion 360 and the recognition portion 370 may be connected to a separate elastic body formed of a spring or the like. In detail, the recognition unit 370 is connected to the contact unit 360 through the elastic body, but when the elastic body is stretched through a separate sensor unit, it is understood that the contact unit 360 and the intaglio unit 402 form a surface contact, and the upper arm is injured. It is assumed that the portion 100 and the lower portion 200 are located in a straight line. Both ends of the contact portion 360 moving about one central axis z toward the upper and lower directions of the second connection portion 400 along the outer circumferential surface of the second connection portion 400 are engraved portions that maintain a fixed state ( 402). Here, the intaglio portion 402 formed by engraving in the direction of one central axis (z) from the outer circumferential surface of the second connection portion 400 has a step by a predetermined depth with the outer circumferential surface of the second connection portion 400, and the intaglio portion 402 ) And the distance between the two ends of the contact portion 360 forming the surface contact and the recognition portion 370 increases, the recognition portion 370 recognizes the contact between the intaglio portion 402 and the contact portion 360. As a more preferred embodiment, the recognition unit 370 has independent sensor units with respect to both ends of the contact unit 360 facing the upper and lower directions of the second connection unit 400, and the sensor unit is provided with a relay sensor or the like, By detecting that the distance between the both ends of the contact unit 360 and the recognition unit 370 increases, the position of the upper thin portion 100 and the lower thin portion 200 may be inferred. In addition, the recognition unit 370 may be connected to a separate alarm unit to inform the user of light, sound, etc. when the upper arm portion 100 and the lower arm portion 200 are formed as dates, so that the lower portion 200 is It is possible to prevent the first connection portion 300 and the second connection portion 400 from being damaged by being excessively large.

Hereinafter, the position recognition of the lower part 200 and the upper part 100 of the recognition part 370 according to the contact between the intaglio part 402 and the contact part 360 will be described with reference to FIG. 11.

In order for the upper arm portion 100 and the lower arm portion 200 to be positioned in a straight line, as the lower arm portion 200 first rotates (s1), the contact portion 360 works along the outer circumferential surface of the second connecting portion 400. The first rotational movement (s1) is performed around the central axis (z). When the upper thin portion 100 and the lower thin portion 200 are disposed in a straight line as shown in FIG. 11, one end of the second connecting portion 400 is directed toward the lower direction of the second connecting portion 400 among both ends of the contact portion 360. It forms a surface contact with the intaglio portion 402 that is formed by a predetermined depth away from the outer circumferential surface. In detail, the contact portion 360 contacts the intaglio portion 402 formed to be stepped with the outer circumferential surface of the second connection portion 400. Accordingly, the one end of the contact portion 360 that is in surface contact with the intaglio portion 402 increases in distance from the recognition unit 370 when compared with the other end of the contact portion 360 that is not in surface contact. Accordingly, the recognition unit 370 recognizes the one end of the larger spaced contact portion 360 through a separate sensor unit and determines that the upper thin portion 100 and the lower thin portion 200 are formed as dates. That is, the recognition unit 370 recognizes this only in a situation where the upper portion 100 and the lower portion 200 are located in a straight line. Therefore, the user can recognize before the lower arm 200 is additionally bent by the first rotational movement s1 after the upper arm 100 and the lower arm 200 are arranged with a “-” character, so that the first connection unit 300 ) And the second connection part 400 may prevent excessive load. Through the configuration and functions as described above, the user can prevent a situation in which discomfort that may occur due to excessive bending of the lower arm 200 and the upper arm 100 may be prevented, and one end of the lower arm 200 may be prevented. When gripping, it is possible to prevent a larger rotational moment and stress from being applied to the elbow part of the electronic prosthesis by the load of the object, ultimately preventing the electron prosthesis from being damaged.

The above-described preferred embodiments of the present invention are disclosed for the purpose of illustration, and those skilled in the art will appreciate various modifications, changes and additions within the spirit and scope of the present invention. It should be regarded as belonging to the above claims.

If a person having ordinary knowledge in the technical field to which the present invention pertains, various substitutions, modifications, and changes are possible without departing from the technical spirit of the present invention. It is not limited by.

100: upper part 200: lower part
300: first connection portion 301: first fixing groove
310: insertion groove 320: drive unit
321: gear 330: plate portion
331: distortion prevention portion 332: through groove
340: arrangement portion 341: second projection
342: 2nd fixing groove 350: Manual winding spring
360: contact unit 370: recognition unit
400: second connection portion 401: first fastening groove
410: tooth 420: support gear
421: first protrusion 422: second fastening groove

Claims (6)

The upper arm part 100 and the lower arm part 200 are hingedly connected, and as an elbow structure of an electron number for articulating the upper arm part 100 and the lower arm part 200 based on a central axis z,
One end is connected to the lower part 200, a plurality of driving units 320 are provided on a concentric circle spaced apart from the one central axis (z) and a predetermined distance (h) inside the other end provided with a gear 321 at one end The first connection unit 300 is provided; And
One end is connected to the upper arm portion 100, the second connection portion 400 is formed with a gear 321 of the plurality of driving parts 320 and a tooth portion 410 arranged in a circular shape to rotate in the outer direction ); The elbow structure of the electronic prosthesis.
According to claim 1,
The toothed portion 410 is provided as a pair of a first toothed portion 410a positioned in one side direction based on the first connection portion 300 and the second toothed portion 410b located in the other side direction Including,
The plurality of driving parts 320 are such that the gear 321 is engaged with the first driving group 320a and the second teeth part 410b facing the one side direction so that the first gear part 410a is engaged with the gear 321. It is divided into a second drive group (320b) facing the other side direction,
The first drive group (320a) and the second drive group (320b) is characterized in that they are sequentially arranged with each other, the elbow structure of the electronic number.
The method according to claim 1 or 2,
It is provided in the second connecting portion 400 is rotated with respect to the central axis (z), the gear 321 of the drive unit 320 by engaging in the inner direction with the gear 321 of the plurality of drive unit 320 It characterized in that it comprises a support gear (321) for supporting, the elbow structure of the electronic prosthesis.
The method according to claim 1 or 2,
One end is connected to the first connection part 300 and the other end includes a spring spring 350 connected to the support gear 420,
When the upper arm portion 100 and the lower arm portion 200 are operated to stretch an elbow so that they are in a straight line, the spring spring 350 is wound by the support gear 420, and the upper arm portion 100 and the lower arm portion ( 200), the force required to bend the upper arm portion 100 and the lower arm portion 200 while the mainspring spring 350 is extended by the restoring force when the bending operation is performed is compensated. Elbow structure.
The method of claim 4,
It characterized in that it further comprises a plate portion 330 which is provided in the first connection portion 300, is provided with a distortion preventing portion 331 that is formed to pass through to correspond to the gear shaft of the driving portion 320 and supports the gear shaft. The elbow structure of the electronic hand.
The method according to claim 1 or 2,
An intaglio portion 402 formed in an outward direction of the second connection portion 400 and engraved to a predetermined depth;
A contact portion formed in one side direction and the other side direction of the first connection portion 300 and in surface contact with the intaglio portion 402 when the upper thin portion 100 and the lower thin portion 200 are disposed in a straight line ( 360); And
Recognition unit 370 that is connected to the contact unit 360 and detects the alignment of the upper thin portion 100 and the lower thin portion 200 when the intaglio portion 402 and the contact portion 360 are in contact with each other. An elbow structure of an electronic prosthesis, further comprising a ;.

Images