CN212564349U - Integrated multifunctional power-assisted gear shifting mechanism - Google Patents
Integrated multifunctional power-assisted gear shifting mechanism Download PDFInfo
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- CN212564349U CN212564349U CN202021216789.1U CN202021216789U CN212564349U CN 212564349 U CN212564349 U CN 212564349U CN 202021216789 U CN202021216789 U CN 202021216789U CN 212564349 U CN212564349 U CN 212564349U
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- 230000007246 mechanism Effects 0.000 title claims abstract description 28
- 230000007935 neutral effect Effects 0.000 claims description 12
- 230000000979 retarding effect Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 230000010354 integration Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 230000008859 change Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
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Abstract
The utility model discloses an integrated multifunctional power-assisted gear shifting mechanism, wherein a central rotating shaft is provided with a rotating shaft body and a cam arranged on the rotating shaft body, a gear shifting module comprises an internal gear, a central shell arranged in the middle of the internal gear and a plurality of gear components which are slidably nested on the central shell, wherein the rotating shaft body extends into a cavity of the central shell, and the gear components are distributed around the rotating shaft body; when the cam rotates, the cam can be abutted against one end of any gear component and can eject the gear component until the other end of the gear component is connected with the internal gear, so that the gears are fixed, the switching of different gears can be realized by utilizing the rotation of the cam, and the gear shifting process is flexible and convenient; moreover, set up reset unit, make each keep off the position subassembly and can auto-regress the normal position after breaking away from the cam, can avoid the difference to keep off and take place to interfere between the position, improve the degree of accuracy that keeps off the position and switch over, this utility model is used for shift control machinery.
Description
Technical Field
The utility model relates to a shift control machinery especially relates to a multi-functional helping hand gearshift of integration.
Background
At present, most of the old-people assisting devices adopt a manual gear shifting mode, and in the manual gear shifting process, a user needs large force for completing gear shifting, so that the old-people assisting devices are not beneficial to being operated by patients or old people.
In addition, the existing gear shifting and speed changing mechanism has more double-row sliding gear speed changing mechanisms, and the parts of the gear shifting and speed changing mechanism comprise tens of sliding shifting forks, spline shafts, positioning steel ball groups, shifting pins, rotating shafts, guide keys and the like; meanwhile, in order to control multi-stage speed change, a mechanism is often required to be provided with a plurality of rotating shafts, and the speed change effect is achieved by the engagement of the vertical position change of the gear of the main shaft and the gear of the auxiliary shaft. The transmission mechanism is not suitable for mounting on small-sized machinery because the number of components is large and complicated, and the weight of the transmission mechanism is increased by a large number of components, which causes a problem of encumbrance on small-sized machinery.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a compact structure and keep off the position and switch the multi-functional helping hand gearshift of nimble integration.
The integrated multifunctional power-assisted gear shifting mechanism comprises a driving module; the central rotating shaft is provided with a rotating shaft body and a cam arranged on the rotating shaft body, and the rotating shaft body is connected with the driving module; the gear shifting module comprises an internal gear, a central shell arranged in the middle of the internal gear and a plurality of different types of gear components which are slidably nested on the central shell, a cavity is formed inside the central shell, a through hole for the rotating shaft body to extend into is formed in the central shell, and the cam is positioned in the cavity; and when the cam rotates, the cam is respectively abutted against one end of each gear component, and the other end of each gear component is connected with the internal gear.
According to the utility model discloses multi-functional helping hand gearshift of integration possesses following beneficial effect at least: the integrated multifunctional power-assisted gear shifting mechanism comprises a driving module, a central rotating shaft and a gear shifting module, wherein the central rotating shaft is provided with a rotating shaft body and a cam arranged on the rotating shaft body, the gear shifting module comprises an internal gear, a central shell arranged in the middle of the internal gear and a plurality of gear components which are slidably nested on the central shell, the rotating shaft body extends into a cavity of the central shell, the gear components are distributed around the rotating shaft body, the integral assembly structure is simple and compact, and the miniaturization manufacturing is facilitated; when the cam rotates, the cam can be abutted against one end of any gear component and can eject the gear component until the other end of the gear component is connected with the internal gear, so that the gears are fixed, the switching of different gears can be realized by utilizing the rotation of the cam, and the gear shifting process is flexible and convenient; moreover, the reset component is arranged, so that each gear component can automatically return to the original position after being separated from the cam, interference among different gears can be avoided, and the accuracy of gear switching is improved.
According to some embodiments of the utility model, each keep off the position subassembly and be forward braking subassembly, reverse braking subassembly, slow down subassembly and neutral gear subassembly respectively.
According to some embodiments of the invention, the other end of the forward braking assembly and the reverse braking assembly meshes with the internal gear.
According to some embodiments of the utility model, forward braking subassembly with reverse braking subassembly all includes the pawl, two the pawl with the tip that the internal gear meets forms inclined plane, two respectively the orientation on inclined plane is opposite.
According to some embodiments of the utility model, the speed reduction subassembly includes first connecting rod and fixes the first smooth tooth of first connecting rod tip, first smooth tooth overcoat is equipped with the friction cover, the inner wall setting of internal gear supplies the gliding notch of first smooth tooth embedding.
According to some embodiments of the invention, the neutral gear assembly has a second connecting rod and a second sliding tooth connected to the end of the second connecting rod, the tooth tip width of the second sliding tooth being greater than the distance between adjacent tooth tips of the inner gear.
According to some embodiments of the invention, the restoring member is an elastic element.
According to some embodiments of the utility model, the center shell is the star configuration, forward braking subassembly reverse braking subassembly the speed slowing subassembly reaches the neutral gear subassembly disposes respectively each angle end of center shell.
According to the utility model discloses a some embodiments, drive module includes the motor, installs the epaxial driving gear of output of motor and with driving gear engaged with driven gear, driven gear cup joints on the pivot body.
According to some embodiments of the utility model, still including the installation shell, the installation shell has continuous dorsal scale and table lid, the table lid surrounds the module of shifting, the motor is installed the outer wall of dorsal scale.
According to some embodiments of the utility model, the middle part of dorsal scale forms the holding chamber, the driving gear with driven gear all locates the holding intracavity.
Drawings
The present invention will be further explained with reference to the accompanying drawings:
fig. 1 is an overall assembly view of an integrated multifunctional power-assisted gear shifting mechanism according to an embodiment of the present invention;
FIG. 2 is a schematic view of the integrated multi-functional power-assisted gear shifting mechanism of the embodiment of the present invention after the mounting case is removed;
FIG. 3 is a schematic view of a shift module of an integrated multi-function power-assisted shift mechanism according to an embodiment of the present invention;
fig. 4 is a schematic structural view of an internal gear according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a retarding assembly according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a central rotating shaft according to an embodiment of the present invention.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, 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, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, 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 there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1 to 2, the embodiment of the present invention provides an integrated multifunctional power-assisted gear shifting mechanism, which includes a driving module, a central rotating shaft 2 and a gear shifting module 3. As shown in fig. 6, the central rotating shaft 2 includes a rotating shaft body 21 and a cam 22 mounted on the rotating shaft body 21, and the rotating shaft body 21 is connected to the driving module; the shift module 3 includes an internal gear 31, a central housing 32 disposed in the middle of the internal gear 31, and a plurality of different types of gear components slidably nested on the central housing 32.
Specifically, a cavity is formed inside the central shell 32, a through hole for the rotating shaft body 21 to extend into is formed in the central shell 32, the cam 22 is located in the cavity, each gear component is distributed around the rotating shaft body 21, when the cam 22 rotates, the cam abuts against one end of each gear component, the other end of each gear component is connected with the internal gear 31, and furthermore, a reset part is respectively arranged between each gear component and the central shell 32.
According to the embodiment of the utility model, the integrated multifunctional power-assisted gear shifting mechanism comprises a driving module, a central rotating shaft 2 and a gear shifting module 3, wherein the central rotating shaft 2 is provided with a rotating shaft body 21 and a cam 22 arranged on the rotating shaft body 21, the gear shifting module 3 comprises an internal gear 31, a central shell 32 arranged in the middle of the internal gear 31 and a plurality of gear components which are slidably nested on the central shell 32, wherein the rotating shaft body 21 extends into the cavity of the central shell 32, and the gear components are distributed around the rotating shaft body 21, so that the whole assembly structure is simple and compact, and the miniaturization manufacture is facilitated; when the cam 22 rotates, the gear can be abutted against one end of any gear component, and the gear component is ejected out until the other end of the gear component is connected with the internal gear 31, so that the gears are fixed, the switching of different gears can be realized by utilizing the rotation of the cam 22, and the gear shifting process is flexible and convenient; furthermore, a reset component is arranged, so that each gear component can automatically return to the original position after being separated from the cam 22, the interference among different gears can be avoided, and the accuracy of gear switching is improved.
As shown in fig. 2, the driving module includes a motor 11, a driving gear 12 mounted on an output shaft of the motor 11, and a driven gear 13 engaged with the driving gear 12; wherein, driven gear 13 cup joints on pivot body 21 to it is fixed with pivot body 21 adhesion, has ensured motor 11 to start with this, drives driving gear 12 and driven gear 13 operation back, and pivot body 21 can rotate along with driven gear 13's rotation. More specifically, the integrated multifunctional power-assisted gear shifting mechanism further comprises a mounting shell, wherein the mounting shell is provided with a back shell 41 and a meter cover 42 which are connected, the meter cover 42 surrounds the gear shifting module 3, and the motor 11 is mounted on the outer wall of the back shell 41; further, an accommodating cavity is formed in the middle of the back shell 41, and the driving gear 12 and the driven gear 13 are both disposed in the accommodating cavity. So set up, install motor 11 externally for the user need not take apart whole gearshift when changing motor 11, thereby has effectively avoided the condition emergence of the internal part of gearshift by artificial damage, is favorable to ensureing overall structure's integrality.
In some embodiments of the present invention, the center housing 32 has a star-shaped structure, and each gear component is a forward braking component 33a, a reverse braking component 33b, a retarding component 34, and a neutral component 35. In this embodiment, as shown in fig. 3, the central housing 32 is shaped like a five-pointed star, and the forward braking assembly 33a, the reverse braking assembly 33b, the retarding assembly 34 and the neutral assembly 35 are respectively nested at each corner of the central housing 32 and are arranged in a circular shape. Further, one of the corner ends of the center housing 32 can be cut off by having no gear assembly nested therein.
More specifically, each of the forward braking unit 33a and the reverse braking unit 33b includes a braking rod 331, and the ends of the braking rods 331 contacting the internal gear 31 are formed with slopes, respectively, and the slopes are oppositely oriented. When the cam 22 jacks up the braking rod 331 of the forward braking component 33a or the reverse braking component 33b, the end of the braking rod 331 is embedded into the tooth slot of the internal gear 31 to be meshed with the internal gear 31; under the action of the inclined surface, the internal gear 31 can be braked reversely. When the forward brake assembly 33a is engaged with the internal gear 31, the shifting mechanism is in a forward gear, and when the reverse brake assembly 33b is engaged with the internal gear 31, the shifting mechanism is in a reverse gear; when a user selects a gear, the user applies a reverse rotational force to the internal gear 31 to resist the reverse rotational force, thereby effectively preventing gear disengagement.
In some embodiments of the present invention, a friction stop is formed when the retarder assembly 34 is engaged with the inner gear 31. Specifically, the speed reducing assembly 34 includes a first link 341 and a first sliding tooth 342 fixed at an end of the first link 341, a friction sleeve is sleeved outside the first sliding tooth 342, and a notch 311 for the first sliding tooth 342 to slide is formed on an inner wall of the internal gear 31; when the internal gear 31 rotates, the friction sleeve and the notch sleeved on the first sliding tooth 342 move relatively, so that friction resistance is generated, and the effect of reducing speed is achieved. Referring to fig. 5, the first sliding gear 342 has two sliding gear tips arranged in parallel at an interval, the distance between the two sliding gear tips is not smaller than the gear width of the inner gear 31, correspondingly, as shown in fig. 4, the notch formed on the inner wall of the inner gear 31 includes two slots for the sliding gear tips to be inserted into, and the two slots are respectively located on two sides of the gear teeth of the inner gear 31 and symmetrically distributed.
Furthermore, the neutral position unit 35 of this embodiment includes the second link 351 and the second sliding tooth 352 connected to the end of the second link 351, wherein the second sliding tooth 352 is provided with a tooth tip width larger than the pitch between adjacent tooth tips of the internal gear 31 so that the second sliding tooth 352 can smoothly slide around the internal gear 31 after contacting the internal gear 31 in order to avoid the second sliding tooth 352 from meshing with the internal gear 31 and ensure that no relative force can be generated between the neutral position unit 35 and the internal gear 31, thereby achieving the neutral position.
In some embodiments of the present invention, the restoring member is an elastic element. As shown in fig. 3, the braking lever 331, the first link 341 and the second link 351 are provided with separating stages at the middle of the side wall surfaces thereof, a first restoring member 51 and a second restoring member 52 are respectively disposed on two opposite surfaces of each separating stage, the first restoring member 51 is located at a side close to the main body of the rotating shaft, and thus each restoring member is composed of the first restoring member 51 and the second restoring member 52. Specifically, the first and second returning members 51 and 52 are both springs, and further, one ends of the first and second returning members 51 and 52 are fixed on the partition table, and the other ends are connected with the central shell 32. The first reset piece 51 is in a stretching state after the braking lever 331 or the first connecting rod 341 or the second connecting rod 351 abuts against the cam 22, and is used for enabling the braking lever 331 or the first connecting rod 341 or the second connecting rod 351 to be separated from the internal gear 31, so that gear interference after gear shifting is avoided, and the second reset piece 52 is in a compressing state before the braking lever 331 or the first connecting rod 341 or the second connecting rod 351 abuts against the cam 22, so that the braking lever 331 or the first connecting rod 341 or the second connecting rod 351 can be assisted to eject out of the cam 22, the speed and the fluency of gear shifting can be improved, and the use experience of a user is improved.
The utility model discloses a multi-functional helping hand gearshift of integration, assembly structure is compact, can realize miniaturized design to and reach the lightweight purpose, be applicable to multiple assist drive device such as patient's recovered helping hand instrument and old person's helping hand instrument. When the power-assisted elbow guard is applied to power-assisted elbow protection, the forward gear and the reverse gear can assist the arms of a user, and the user is assisted to slowly lift or lower the arms to complete operations of grabbing objects and the like; when the friction gear is in the friction gear, the movement speed of the arm of the user can be slowed down, the arm can be lifted and rehabilitated, and meanwhile, enough supporting force is provided for the user to retract the arm; when the elbow pad is switched to the neutral position state, the user can freely move the arm, and the power-assisted elbow pad only achieves the functions of wrapping and protecting the arm.
Naturally, the invention is not limited to the above-described embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope of the claims of the present application.
Claims (10)
1. Multi-functional helping hand gearshift of integration, its characterized in that includes:
a drive module;
the central rotating shaft is provided with a rotating shaft body and a cam arranged on the rotating shaft body, and the rotating shaft body is connected with the driving module; and
the gear shifting module comprises an internal gear, a central shell arranged in the middle of the internal gear and a plurality of gear components which are slidably nested on the central shell, a cavity is formed inside the central shell, a through hole for the rotating shaft body to extend into is formed in the central shell, and the cam is positioned in the cavity;
and when the cam rotates, the cam is respectively abutted against one end of each gear component, and the other end of each gear component is connected with the internal gear.
2. The integrated multi-function power assisted shift mechanism of claim 1, wherein: each gear component is a forward braking component, a reverse braking component, a retarding component and a neutral gear component.
3. The integrated multi-function power assisted shift mechanism of claim 2, wherein: the forward braking component and the reverse braking component both comprise braking rods, inclined planes are formed at the end parts of the braking rods connected with the internal gear respectively, and the directions of the inclined planes are opposite.
4. The integrated multi-function power assisted shift mechanism of claim 2, wherein: the retarding component comprises a first connecting rod and a first sliding tooth fixed at the end part of the first connecting rod, a friction sleeve is sleeved outside the first sliding tooth, and the inner wall of the inner gear is provided with a notch for the first sliding tooth to be embedded into and slide.
5. The integrated multi-function power assisted shift mechanism of claim 2, wherein: the neutral gear component is provided with a second connecting rod and a second sliding tooth connected to the end part of the second connecting rod, and the tooth tip width of the second sliding tooth is larger than the distance between the adjacent tooth tips of the inner gear.
6. The integrated multi-function power assisted shift mechanism of any one of claims 2 to 5, wherein: the center shell is of a star-shaped structure, and the forward braking assembly, the reverse braking assembly, the retarding assembly and the neutral gear assembly are respectively arranged at each corner end of the center shell.
7. The integrated multi-function power assisted shift mechanism of claim 1, wherein: the reset component adopts an elastic element.
8. The integrated multi-function power assisted shift mechanism of claim 1, wherein: the driving module comprises a motor, a driving gear arranged on an output shaft of the motor and a driven gear meshed with the driving gear, and the driven gear is sleeved on the rotating shaft body.
9. The integrated multi-function power assisted shift mechanism of claim 8, wherein: the driving module further comprises an installation shell, the installation shell is provided with a back shell and a meter cover which are connected, the meter cover surrounds the gear shifting module, and the motor is installed on the outer wall of the back shell.
10. The integrated multi-function power assisted shift mechanism of claim 9, wherein: the middle part of dorsal scale forms the holding chamber, the driving gear with driven gear all locates the holding intracavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021216789.1U CN212564349U (en) | 2020-06-28 | 2020-06-28 | Integrated multifunctional power-assisted gear shifting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021216789.1U CN212564349U (en) | 2020-06-28 | 2020-06-28 | Integrated multifunctional power-assisted gear shifting mechanism |
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| Publication Number | Publication Date |
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| CN212564349U true CN212564349U (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021216789.1U Expired - Fee Related CN212564349U (en) | 2020-06-28 | 2020-06-28 | Integrated multifunctional power-assisted gear shifting mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111795140A (en) * | 2020-06-28 | 2020-10-20 | 华南理工大学 | Integrated multifunctional power-assisted gear shifting mechanism |
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2020
- 2020-06-28 CN CN202021216789.1U patent/CN212564349U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111795140A (en) * | 2020-06-28 | 2020-10-20 | 华南理工大学 | Integrated multifunctional power-assisted gear shifting mechanism |
| CN111795140B (en) * | 2020-06-28 | 2024-04-16 | 华南理工大学 | Integrated multifunctional power-assisted gear shifting mechanism |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210219 |