CN216318245U - Elbow joint anti-shake mechanism and elbow joint - Google Patents
Elbow joint anti-shake mechanism and elbow joint Download PDFInfo
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- CN216318245U CN216318245U CN202121833226.1U CN202121833226U CN216318245U CN 216318245 U CN216318245 U CN 216318245U CN 202121833226 U CN202121833226 U CN 202121833226U CN 216318245 U CN216318245 U CN 216318245U
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- 230000007246 mechanism Effects 0.000 title claims abstract description 160
- 210000002310 elbow joint Anatomy 0.000 title claims abstract description 39
- 230000000694 effects Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses an elbow joint anti-shaking mechanism and an elbow joint, wherein the elbow joint anti-shaking mechanism comprises a rotating shaft, a friction module, a power module and a shell, the friction module comprises a fixed friction mechanism and two side friction mechanisms, and a rotating shaft space for accommodating the rotating shaft is formed between the fixed friction mechanism and each side friction mechanism in a surrounding manner; the power module is used for driving the two side friction mechanisms to approach and abut against the rotating shaft, and the side friction mechanisms can apply force pressing the rotating shaft to the fixed friction mechanism; the friction module and the power module are installed on the shell, and the rotating shaft space is formed in the shell. Two side friction mechanisms of power module drive press to the pivot, and the pivot is promoted to and decides the friction mechanism contact, and the pivot is all contacted in order to receive frictional force with deciding friction mechanism and two side friction mechanisms to the pivot is held tightly in the pivot space, avoids the pivot to take place to rotate or shake, and is more stable when the elbow joint uses.
Description
Technical Field
The utility model relates to an elbow joint anti-shake mechanism and an elbow joint in the field of exercise assisting instruments.
Background
With the progress of science and technology and the pursuit of people for good life, the problem of elbow shaking of the old and disabled people is more and more emphasized. People with shaky elbows face a lot of inconvenience in daily life, such as frequent soup drinking, shame at dining tables, and the like, and the elbow joint anti-shake machine also pursues a lightweight and small effect in consideration of the physiological and psychological needs of such people. The so-called elbow joint anti-shake machine is a mechanical mechanism for helping people with elbow joint shake to maintain normal life. As a branch of the sport protector, the anti-shake protector is gradually matured.
The existing anti-shake machine is too complex in structure and difficult to maintain for elbow anti-shake application, so that the practicability is relatively low. Common anti-shake devices all have different degrees of deficiency. The electric signal compensation type anti-shake system has high response requirement on a control system, can not completely prevent shake generally, and only can reduce shake degree. Meanwhile, the electric signal compensation type anti-shake system is large in size and difficult to hold and control. The stability that centre gripping type anti-shake system relied on increasing the dynamics of having an effect and simplifying the centre gripping mode and keep the centre gripping, this type anti-shake system has stronger motion ability requirement to the limbs end, and the user produces fatigue easily after using for a long time, and the anti-shake effect is unstable moreover. The self-balancing purely mechanical anti-shaking system is narrow and unstable in application occasions, cannot be adjusted independently and has small anti-shaking dimensions. The three anti-shaking modes all belong to a device for shaking compensation by using an external mechanism, the arms of a user still shake, and the problem of shaking of the arms is not fundamentally solved.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solve at least one of the problems of the prior art, and an object of the present invention is to provide an anti-shake mechanism for an elbow joint and an elbow joint, which can prevent shaking during use.
According to an embodiment of the first aspect of the utility model, an anti-shake mechanism for an elbow joint is provided, which comprises a rotating shaft; the friction module comprises a fixed friction mechanism and two side friction mechanisms, and a rotating shaft space for accommodating a rotating shaft is surrounded and formed between the fixed friction mechanism and each side friction mechanism; the power module is used for driving the two side friction mechanisms to be close to and abutted against the rotating shaft, and the side friction mechanisms can apply force pressing the rotating shaft to the fixed friction mechanism; the friction module and the power module are installed on the shell, and the rotating shaft space is formed in the shell.
According to an embodiment of the first aspect of the present invention, further, the fixed friction mechanism includes a fixed friction block, and the fixed friction block is fixed on the inner wall of the housing.
According to the embodiment of the first aspect of the present invention, further, the side friction mechanism includes a friction set, the friction set includes a connecting rod and a side friction block, the side friction block is fixed on the connecting rod, the connecting rod is rotatably mounted on the inner wall of the housing, and the rotating shaft is located on a motion track of the side friction block.
According to the embodiment of the first aspect of the present invention, further, the power module includes two sets of moving mechanisms moving horizontally, the moving mechanisms correspond to the side friction mechanisms one by one, each moving mechanism is used for driving the connecting rods to rotate, and the connecting rods of the two side friction mechanisms rotate in opposite directions.
According to the embodiment of the first aspect of the present invention, further, the moving mechanism includes a plurality of screw rod sliding sets, each screw rod sliding set includes a screw rod and a sliding block matched with the screw rod, the sliding blocks are connected to the side friction mechanisms, and the sliding blocks of the two moving mechanisms move toward or away from each other.
According to the embodiment of the first aspect of the present invention, the moving mechanisms are respectively a first moving mechanism and a second moving mechanism, the number of the screw sliding sets in the first moving mechanism is two, the number of the screw sliding sets in the second moving mechanism is one, and the screw sliding set in the second moving mechanism is located between the two screw sliding sets of the first moving mechanism.
According to the embodiment of the first aspect of the present invention, further, the power module further includes a motor and a gear mechanism, the gear mechanism includes a driving gear, a first driven gear and two second driven gears, the motor is connected to the driving gear, the driving gear is meshed with the first driven gear, both of the two second driven gears are meshed with the first driven gear, the first driven gear is connected to a lead screw of a second moving mechanism, and the two second driven gears are respectively connected to each lead screw of the first moving mechanism.
According to the embodiment of the first aspect of the present invention, further, the side surface of the side friction block, which is used for being attached to the rotating shaft, is an arc surface.
According to a second aspect of the embodiment of the utility model, an elbow joint is provided, and the elbow joint anti-shake mechanism comprises the elbow joint anti-shake mechanism.
The utility model has the beneficial effects that: two side friction mechanisms of power module drive press to the pivot, and the pivot is promoted to and decides the friction mechanism contact, and the pivot is all contacted in order to receive frictional force with deciding friction mechanism and two side friction mechanisms to the pivot is held tightly in the pivot space, avoids the pivot to take place to rotate or shake, and is more stable when the elbow joint uses.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the utility model, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.
FIG. 1 is a schematic exterior view of an anti-shake mechanism for an elbow joint according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an anti-shake mechanism for an elbow joint according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of the elbow joint anti-shake mechanism at another angle in the embodiment of the utility model (the housing is omitted);
figure 4 is a schematic representation of an elbow joint in an embodiment of the utility model.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 to 3, an anti-shake mechanism 100 for an elbow joint according to an embodiment of the present invention includes a shaft 20, a friction module, a power module, and a housing 10, wherein the friction module and the power module are mounted on the housing 10. The friction module comprises a fixed friction mechanism 30 and two side friction mechanisms 40, a rotating shaft space for accommodating the rotating shaft 20 is enclosed between the fixed friction mechanism 30 and each side friction mechanism 40, and the rotating shaft space is formed in the shell 10. The power module is used for driving the two side friction mechanisms 40 to be close to and abutted against the rotating shaft 20, and the side friction mechanisms 40 can apply force pressing the fixed friction mechanism 30 to the rotating shaft 20. The rotating shaft 20 is at least partially positioned in the rotating shaft space, when the elbow joint anti-shake mechanism 100 is not in the brake state, a gap exists between the rotating shaft 20 and the inner wall of the rotating shaft space, and the rotating shaft 20 can freely rotate without receiving friction force from the inner wall of the rotating shaft space; when the elbow joint anti-shake mechanism 100 is to be in the state of holding and braking, the power module drives the two side friction mechanisms 40 to be close to and abut on the rotating shaft 20, the side friction mechanisms 40 can apply a force to the rotating shaft 20 to press the fixed friction mechanism 30 after contacting with the rotating shaft 20, so that the rotating shaft 20 is pressed to the fixed friction mechanism 30 until the rotating shaft 20 abuts against the fixed friction mechanism 30 and the two side friction mechanisms 40, at the moment, the rotating shaft 20 contacts with the inner wall of the rotating shaft space, the rotating shaft 20 is subjected to the friction force from the inner wall space, and the rotating shaft 20 is held tightly in the rotating shaft space, and the anti-shake function is realized. Since the rotating shaft 20 can receive frictional forces from three directions, the rotating shaft 20 is less likely to be shaken or displaced.
In one embodiment, the fixed friction mechanism 30 includes a fixed friction block 302, and the fixed friction block 302 is fixed on the inner wall of the housing 10. Specifically, the fixed friction block 302 is mounted on the inner side of the top of the housing 10 through the bracket 301, and the end surface of the fixed friction block 302, which is used for contacting with the rotating shaft 20, is an arc surface, so as to increase the contact area between the fixed friction block 302 and the rotating shaft 20, and thus enhance the holding force of the fixed friction block 302 on the rotating shaft 20.
The side friction mechanism 40 includes a friction set including a link 401 and a side friction block 402, the side friction block 402 being fixed to the link 401. Further, the side face of the side friction block 402, which is used for being attached to the rotating shaft 20, is an arc face, so that the contact area between the side friction block 402 and the rotating shaft 20 is increased, the friction force which can be received by the rotating shaft 20 from the side friction block 402 is increased, and the holding effect is enhanced.
As an alternative embodiment, two side friction mechanisms 40 are respectively located at two sides of the rotating shaft 20, the end of the connecting rod 401 is in contact with the lower portion of the rotating shaft 20, and the axial direction of the connecting rod forms an angle with the vertical direction, and the lower portion of the rotating shaft 20 refers to the portion below the horizontal plane passing through the center of circle. The power module drives the connecting rod 401 to move along the axial direction of the power module, so that after the power module is started, the side friction block 402 can extend towards the rotating shaft 20 along with the connecting rod 401 to contact and push the rotating shaft 20 to the fixed friction block 302 positioned above the rotating shaft 20.
As another alternative, the connecting rod 401 is rotatably mounted on the inner wall of the housing 10, the rotating shaft 20 is located on the motion track of the side friction block 402, and likewise, the side friction block 402 is in contact with the lower portion of the rotating shaft 20. In this embodiment, the two side friction mechanisms 40 are symmetrically distributed on two sides of the rotating shaft 20, the connecting rod 401 rotates towards the rotating shaft 20, and the side friction block 402 moves upwards along the circumferential direction and abuts against the rotating shaft 20, so that the rotating shaft 20 is pushed upwards towards the fixed friction block 302. Specifically, the top end of the connecting rod 401 is hinged to the bracket 301, so that the integration degree of the friction module is improved, and the structure is simplified and is easier to install.
In this embodiment, the two side friction mechanisms 40 are a first side friction mechanism 41 and a second side friction mechanism 42, respectively, the number of the connecting rods 401 in the first side friction mechanism 41 is two, the two connecting rods 401 are connected through a connecting column, and the side friction block 402 is located on the two connecting rods 401. The number of the links 401 in the second side friction mechanism 42 is one. The two side friction mechanisms 40 are symmetrically arranged about a vertical plane passing through the rotation shaft 20 and the projection of the connecting rod 401 in the second side friction mechanism 42 on the vertical plane is positioned between the projections of the two connecting rods 401 in the first side friction mechanism 41 on the vertical plane.
In one embodiment, the power module includes two sets of horizontally moving mechanisms 50, the moving mechanisms 50 are in one-to-one correspondence with the side friction mechanisms 40, each moving mechanism 50 is used for driving the connecting rod 401 to rotate, and the rotating directions of the connecting rods 401 of the two side friction mechanisms 40 are opposite. The moving mechanisms 50 are a first moving mechanism 51 and a second moving mechanism 52, respectively, and accordingly, the first moving mechanism 51 is used for driving the first side friction mechanism 41, and the second moving mechanism 52 is used for driving the second side friction mechanism 42. The moving mechanisms 50 comprise a plurality of screw rod sliding groups, each screw rod sliding group comprises a screw rod 501 and a sliding block 502 matched with the screw rod 501, the sliding blocks 502 are connected with the side friction mechanisms 40, and the sliding blocks 502 of the two moving mechanisms 50 move towards or away from each other. The screw 501 rotates in different directions to make the slider 502 slide back and forth along the axial direction of the screw 501.
In this embodiment, the number of the screw sliding groups in the first moving mechanism 51 is two, the number of the screw sliding groups in the second moving mechanism 52 is one, and the screw sliding group in the second moving mechanism 52 is located between the two screw sliding groups of the first moving mechanism 51. The two links 401 in the first side friction mechanism 41 are respectively connected with the slide blocks 502 in the screw sliding sets in the first moving mechanism 51, and the links 401 in the second side friction mechanism 42 are connected with the slide blocks 502 in the second moving mechanism 52. Since the screw slide group in the second moving mechanism 52 is located between the two screw slide groups of the first moving mechanism 51, the acting forces of the two side friction blocks 402 are opposite when the two side friction mechanisms 40 approach the rotating shaft 20, and it is ensured that the rotating shaft 20 is not forced to shift.
Further, the power module further comprises a motor and a gear mechanism, the gear mechanism comprises a driving gear 60, a first driven gear 61 and two second driven gears 62, the motor is connected with the driving gear 60, the driving gear 60 is meshed with the first driven gear 61, the two second driven gears 62 are both meshed with the first driven gear 61, the first driven gear 61 is connected with a screw rod 501 of the second moving mechanism 52, and the two second driven gears 62 are respectively connected with each screw rod 501 of the first moving mechanism 51. The case where the driving gear 60 rotates counterclockwise and the sliders 502 of the two moving mechanisms 50 approach each other will be described as an example. The motor drives the driving gear 60 to rotate around the counterclockwise direction, the driving gear 60 is in meshing transmission with the first driven gear 61, and the first driven gear 61 drives the screw rod 501 of the second moving mechanism 52 to rotate around the clockwise direction; meanwhile, the first driven gear 61 is also in meshed transmission with the two second driven gears 62, so that the two second driven gears 62 rotate around the counterclockwise direction, and drive the corresponding screw rods 501 of the first moving mechanism 51 to rotate around the counterclockwise direction, and the sliding blocks 502 of the two moving mechanisms 50 move towards each other, so as to drive the side friction blocks 402 of the side friction mechanisms 40 to approach the rotating shaft 20, and the rotating shaft space is reduced. On the contrary, when the motor drives the driving gear 60 to rotate in the opposite direction, the sliding blocks 502 of the two moving mechanisms 50 move back and forth, the connecting rods 401 of the two side friction mechanisms 40 are reset under the action of gravity, and a gap is formed between the rotating shaft 20 and the rotating shaft space again.
Referring to fig. 4, the elbow joint in the second embodiment of the present invention includes the elbow joint anti-shake mechanism 100 in any one of the above embodiments.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the utility model as set forth in the claims appended hereto.
Claims (9)
1. An elbow joint anti-shake mechanism, comprising:
a rotating shaft;
the friction module comprises a fixed friction mechanism and two side friction mechanisms, and a rotating shaft space for accommodating a rotating shaft is surrounded and formed between the fixed friction mechanism and each side friction mechanism;
the power module is used for driving the two side friction mechanisms to be close to and abutted against the rotating shaft, and the side friction mechanisms can apply force pressing the rotating shaft to the fixed friction mechanism;
the friction module and the power module are installed on the shell, and the rotating shaft space is formed in the shell.
2. The anti-shake mechanism for an elbow joint according to claim 1, wherein: the fixed friction mechanism comprises a fixed friction block, and the fixed friction block is fixed on the inner wall of the shell.
3. The anti-shake mechanism for an elbow joint according to claim 1, wherein: the side friction mechanism comprises a friction group, the friction group comprises a connecting rod and a side friction block, the side friction block is fixed on the connecting rod, the connecting rod is rotatably installed on the inner wall of the shell, and the rotating shaft is located on the motion track of the side friction block.
4. The anti-shake mechanism for an elbow joint according to claim 3, wherein: the power module comprises two groups of moving mechanisms which move horizontally, the moving mechanisms correspond to the side friction mechanisms one by one, each moving mechanism is used for driving the connecting rods to rotate, and the rotating directions of the connecting rods of the two side friction mechanisms are opposite.
5. The anti-shake mechanism for an elbow joint according to claim 4, wherein: the moving mechanism comprises a plurality of screw rod sliding groups, each screw rod sliding group comprises a screw rod and a sliding block matched with the screw rod, the sliding blocks are connected with the side friction mechanisms, and the sliding blocks of the two moving mechanisms move in an opposite direction or in an opposite direction.
6. The anti-shake mechanism for an elbow joint according to claim 5, wherein: the moving mechanisms are respectively a first moving mechanism and a second moving mechanism, the number of the screw rod sliding groups in the first moving mechanism is two, the number of the screw rod sliding groups in the second moving mechanism is one, and the screw rod sliding groups in the second moving mechanism are positioned between the two screw rod sliding groups of the first moving mechanism.
7. The anti-shake mechanism for an elbow joint according to claim 6, wherein: the power module further comprises a motor and a gear mechanism, the gear mechanism comprises a driving gear, a first driven gear and two second driven gears, the motor is connected with the driving gear, the driving gear is meshed with the first driven gear, the second driven gears are meshed with the first driven gear, the first driven gear is connected with a screw rod of the second moving mechanism, and the second driven gears are connected with the screw rods of the first moving mechanism respectively.
8. The anti-shake mechanism for an elbow joint according to claim 3, wherein: the side face of the side friction block, which is used for being attached to the rotating shaft, is an arc face.
9. An elbow joint, characterized by: an anti-shake mechanism for an elbow joint according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121833226.1U CN216318245U (en) | 2021-08-06 | 2021-08-06 | Elbow joint anti-shake mechanism and elbow joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121833226.1U CN216318245U (en) | 2021-08-06 | 2021-08-06 | Elbow joint anti-shake mechanism and elbow joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216318245U true CN216318245U (en) | 2022-04-19 |
Family
ID=81168710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121833226.1U Expired - Fee Related CN216318245U (en) | 2021-08-06 | 2021-08-06 | Elbow joint anti-shake mechanism and elbow joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216318245U (en) |
-
2021
- 2021-08-06 CN CN202121833226.1U patent/CN216318245U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220419 |