CN218440529U

CN218440529U - Rotation angle detection assembly and flip cover driving device using same

Info

Publication number: CN218440529U
Application number: CN202222954199.4U
Authority: CN
Inventors: 陈文杰; 丁维超; 殷立威
Original assignee: Jiangsu Leili Motor Co Ltd
Current assignee: Jiangsu Leili Motor Co Ltd
Priority date: 2022-11-07
Filing date: 2022-11-07
Publication date: 2023-02-03
Anticipated expiration: 2032-11-07

Abstract

The utility model discloses a turned angle detection subassembly and use its flip drive arrangement, include: the final transmission gear is used for detecting a potentiometer of the rotation angle of the final transmission gear; wherein the final transmission gear has a driving part for inserting into the detection hole of the potential piece; the driving part penetrates through the detection hole of the potential piece and can drive the potentiometer to change the resistance value along with the rotation of the final transmission gear. The utility model discloses can compromise the holistic simplification of detection structure that is arranged in detecting the angle of uncapping among the flip drive arrangement and ensure the accuracy that detects the structure.

Description

Rotation angle detection assembly and flip cover driving device using same

Technical Field

The utility model relates to an automation equipment technical field especially relates to a turned angle determine module and use its flip drive arrangement.

Background

The automatic household equipment such as bathroom equipment or household appliances (toilets or washing machines) can not be opened or closed automatically in the using process. In order to accurately control the opening angle, a position detecting device is usually provided in the flip structure. The potentiometer is a sensor commonly used for a position detection device and has the advantages of low cost and high precision.

Specifically, the potentiometer uses the following principle: the flip structure mainly comprises a motor, a transmission component, an output shaft and a shell. The transmission assembly is usually a worm wheel, a worm and a gear, and a multi-stage meshing transmission is arranged between a motor shaft and an output shaft. The motor shaft is a high-speed end, and the output shaft is a low-speed end or an output end. The final purpose of the position detection function is to accurately control the rotation angle of the output end.

Most of the detecting devices applied to the flip structure in the prior art have the following conditions:

first, in the solution disclosed in CN209203118U, the potentiometer is directly connected to the output shaft, and no other member having a relative motion relationship with the output shaft is provided between the potentiometer and the output shaft. In this connection, the position detection accuracy is theoretically optimal. But the transmission shaft is fixedly connected with the output shaft, so the transmission shaft rotates along with the output shaft, the output shaft bears the maximum working torque of all rotating shafts of the flip structure, and the transmission shaft inevitably generates larger friction on a shaft hole matched with the transmission shaft on the shell. In view of cost, the housing is usually made of plastic and is not provided with a bearing, so that the high friction inevitably accelerates the abrasion of the shaft hole and causes the inclination and the shaking of the output shaft to reduce the damage of transmission precision.

First, in the patent document CN203645476U, the position detecting device is mainly composed of a potential gear and a potentiometer. The potentiometer detects the angle of rotation of the potential gear, which is driven by a final gear meshed with the output wheel gear. According to the scheme, as an additional potential gear specially matched with a potentiometer is required to be added and participates in driving an output shaft, the structure can simultaneously increase the cost of materials, manual assembly detection and the like. In addition, in this configuration, the sensing is through at least two-stage gearing. The potentiometer is meshed with the output shaft through two stages of gears, namely, the output shaft gear is meshed with the gear, the gear is meshed with the potential gear and is affected by the backlash, each stage of meshing generates certain angle error, and the two stages of meshing transmission errors are large.

In addition, in addition to the above two disclosures, the position sensors used in the prior art, for example, in CN112790654B, CN103683650B, and CN103780015A, have the drawbacks of the above two cases.

In summary, the position detecting mechanism applied in the flip structure generally adopted in the prior art cannot simultaneously consider the simplification of the structure and ensure the accuracy of the detecting structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a turned angle detection subassembly to the solution compromises the holistic simplification of detection structure and ensures the technical problem who detects the accuracy of structure.

The third objective of the utility model is to provide a flip device to the solution is taken into account and is had consideration to the holistic simplification nature of the detection structure of the detection angle of uncapping among the flip drive arrangement and ensures the technical problem who detects the accuracy of structure.

The utility model discloses a turned angle detection subassembly is realized like this:

a rotation angle detecting assembly comprising: the final transmission gear is used for detecting a potentiometer of the rotation angle of the final transmission gear; wherein

The final transmission gear is provided with a driving part inserted into a detection hole of the potential piece;

the driving part penetrates through the detection hole of the potential piece and can drive the potentiometer to change the resistance value along with the rotation of the final transmission gear.

In an optional embodiment of the present invention, the driving portion is a columnar structure body with a cross section of a notched circle.

In an optional embodiment of the present invention, the final transmission gear includes a gear plate, a supporting portion coaxially and fixedly connected to an axial end of the gear plate facing the potentiometer, and the driving portion is disposed on an axial end surface of the supporting portion facing away from the gear plate; and

and shaft holes are coaxially arranged in the gear disc, the supporting part and the driving part.

In an optional embodiment of the present invention, the rotation angle detecting assembly further includes a reinforcing plate for fixing the potentiometer; and

the reinforcing plate is provided with a positioning hole which is suitable for being in running fit with the supporting part.

In an optional embodiment of the present invention, the reinforcing plate is made of a metal material.

The utility model discloses a flip drive arrangement realizes like this:

a flip cover driving apparatus comprising:

a motor assembly having a drive motor shaft;

the reduction gear assembly comprises an input gear connected with the motor assembly and a multi-stage transmission gear set matched with the input gear;

the output assembly comprises an output shaft gear matched with a final transmission gear in the multi-stage transmission gear set and an output shaft connected with the output shaft gear; and

and a final transmission gear in the rotation angle detection assembly is a final transmission gear in the output assembly.

In an alternative embodiment of the present invention, the driving motor shaft is a worm motor shaft; and

the input gear is meshed with a worm type motor shaft.

In an optional embodiment of the present invention, the multi-stage transmission gear set comprises a first stage transmission gear coaxially connected to the input gear, a second stage main transmission gear connected to the first stage transmission gear, a second stage sub-transmission gear coaxially connected to the second stage main transmission gear, a third stage main transmission gear connected to the second stage sub-transmission gear, a third stage sub-transmission gear coaxially connected to the third stage main transmission gear, and the final stage transmission gear connected to the third stage sub-transmission gear; wherein

The first-stage transmission gear and the output gear are suitable for synchronous rotation;

the second-stage main transmission gear and the second-stage auxiliary transmission gear synchronously rotate; and

and the third-stage main transmission gear and the third-stage auxiliary transmission gear rotate synchronously.

In an optional embodiment of the present invention, the first stage transmission gear is connected to the input gear by a first transmission shaft; and

the third-stage main transmission gear is connected with a third-stage auxiliary transmission gear through a second transmission shaft;

and the second-stage main transmission gear, the second-stage auxiliary transmission gear and the final transmission gear are connected with a third transmission shaft.

In an optional embodiment of the present invention, the third transmission shaft includes a large outer diameter shaft and a small outer diameter shaft which are integrally formed;

the outer diameter of the small outer diameter shaft is smaller than that of the large outer diameter shaft; and

the large-outer-diameter shaft is used for forming a rotary support for the second-stage main transmission gear, the second-stage auxiliary transmission gear and the final transmission gear, and the small-outer-diameter shaft is used for penetrating through a driving part of the final transmission gear.

By adopting the technical scheme, the utility model discloses following beneficial effect has: the utility model discloses a turned angle detection subassembly and use its flip drive arrangement, through direct and the last drive gear cooperation with the potentiometer, and last drive gear itself is an inherent structure among flip drive arrangement's the multistage drive gear group, so also do not need add a detection gear specially for the cooperation potentiometer, at first can simplify holistic turned angle detection subassembly's structure from structure itself, secondly also can reduce cost from assembly and material cost, and make the potentiometer directly detect last drive gear's turned angle under the structure of simplification, and last drive gear is direct again with output shaft subassembly complex, consequently can shorten the potentiometer and detect required drive chain based on this drive chain, and then improve holistic detection precision.

Furthermore, the utility model discloses avoided the problem with the wearing and tearing casing that the transmission shaft cooperation of potentiometer and connection output shaft exists, consequently the utility model discloses overall structure's reliability is stronger, and then can prolong overall structure's life.

Drawings

Fig. 1 is a schematic structural diagram of a rotation angle detecting assembly of the present invention applied in a flip cover driving device;

fig. 2 is a schematic view of the internal structure of the first viewing angle of the flip driving device according to the present invention;

fig. 3 is a schematic view of the internal structure of the second viewing angle of the flip cover driving device of the present invention;

fig. 4 is a schematic cross-sectional structural view of the flip driving device of the present invention;

fig. 5 is a schematic structural diagram of a potentiometer of the flip cover driving device of the present invention;

fig. 6 is a schematic structural view of a final transmission gear of the flip cover driving device of the present invention;

fig. 7 is a schematic structural view of a reinforcing plate of the flip driving device according to the present invention;

fig. 8 is a schematic view of the overall structure of the flip driving device of the present invention.

In the figure: the motor assembly comprises a first shell 11, a second shell 12, a third shell 13, a motor assembly 2, a worm 21, an input gear 31, a first-stage transmission gear 32, a second-stage main transmission gear 33, a second-stage auxiliary transmission gear 34, a third-stage main transmission gear 35, a third-stage auxiliary transmission gear 36, a final-stage transmission gear 37, an output shaft gear 38, an output shaft 39, a first transmission shaft 41, a second transmission shaft 42, a third transmission shaft 43, a large outer diameter shaft 431, a small outer diameter shaft 432, a potentiometer 5, a detection hole 51, a gear disc 371, a supporting part 372, a driving part 373, a reinforcing plate 6, a positioning hole 61, an assembly hole 62 and an adaptation hole 63.

Detailed Description

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.

Example 1:

referring to fig. 1 to 7, the present embodiment provides a rotation angle detecting assembly, which is suitable for a flip cover driving device and is used for detecting a cover opening angle of a flip cover, and specifically, the rotation angle detecting assembly in the present embodiment includes: the final transmission gear 37 is a potentiometer 5 for detecting a rotation angle of the final transmission gear 37.

Roughly speaking, in order to meet the detection requirement of the potentiometer, the final drive gear 37 adopted by the embodiment has a driving part 373 inserted into the detection hole 51 of the potentiometer, and the driving part 373 is coaxially distributed relative to the own final drive gear 37, so that the driving part 373 can synchronously rotate along with the rotation of the final drive gear 37; under such structure, the implementation principle of holistic turned angle detection subassembly promptly is: the driving portion 373 penetrates the detection hole 51 of the potential member and can drive the potentiometer 5 to change its resistance value as the final drive gear 37 rotates, so that the rotation angle of the driving portion 373, that is, the output gear, can be known.

Further, as an alternative case, taken in conjunction with the accompanying drawings, the final drive gear 37 includes a gear plate 371, a support portion 372 coaxially and fixedly connected to an axial end of the gear plate 371, which faces the potentiometer, and a driving portion 373 provided on an axial end face of the support portion 372, which faces away from the gear plate 371; and shaft holes are coaxially formed in the gear plate 371, the support portion 372 and the driving portion 373. The gear plate 371, the support portion 372 and the driving portion 373 can be directly and integrally formed, so that the firmness of the whole structure is improved, and the coaxiality of the gear plate 371, the support portion 372 and the driving portion 373 can be ensured.

Based on the above structure, the rotation angle detection assembly adopted in the present embodiment further includes a reinforcing plate 6 for fixing the potentiometer 5; and the reinforcing plate 6 is provided with a positioning hole 61 adapted to be rotatably fitted with the support portion 372. The supporting portion 372 is of a smooth circular ring structure, so that the supporting portion 372 and the positioning hole 61 can be effectively matched in a rotating mode, the reinforcing plate 6 can be used for supporting and positioning the potentiometer 5 on one hand, and can also be used for supporting the final transmission gear 37 in the rotating process on the other hand, therefore, the stability of the final transmission gear 37 in the operation process is further improved, the inclination risk possibly occurring in the long-term use process of the final transmission gear 37 is reduced, and the detection accuracy of the potentiometer 5 matched with the final transmission gear 37 in the detection process is further improved. Based on the above use requirement, under the optional condition, the reinforcing plate 6 is made of metal materials, and has high strength and strong use stability.

Note that the driving portion 373 in this embodiment is a columnar structure having a notched circle in cross section. The reason for this is that the detection hole 51 of the potentiometer 5 generally used is generally D-shaped, so the section of the driving portion 373 for driving or triggering the potentiometer 5 is also preferably D-shaped, and the circular structure is not selected because the driving function can be realized only by a troublesome assembly process such as interference fit pressing or adhesion, which is not favorable for assembly.

Example 2:

referring to fig. 1 to 8, on the basis of the rotation angle detecting assembly of embodiment 1, the present embodiment provides a flip cover driving device, including: the motor component 2, the reduction gear component and the output component are used in a matched mode. Wherein the motor assembly 2 has a drive motor shaft; a reduction gear assembly including an input gear 31 connected to the motor assembly 2 and a multi-stage transmission gear set engaged with the input gear 31; an output assembly including an output shaft gear 38 engaged with a final drive gear 37 in the multi-stage drive gear set and an output shaft 39 connected to the output shaft gear 38; and the final drive gear 37 in the rotation angle detection assembly is the final drive gear 37 in the output assembly.

Since the final transmission gear 37 in the present embodiment is directly engaged with the output shaft gear 38, the engagement error is small, and the potentiometer 5 directly detects the rotation angle of the final transmission gear 37, the transmission chain required for detection by the potentiometer 5 can be shortened based on the transmission chain, and the overall detection accuracy can be improved

Of course, in addition to the above-described structure, the integral flip driving apparatus further includes an outer housing, and for convenience of assembly, the outer housing in the present embodiment includes the first housing 11, the second housing 12, and the third housing 13 that are used in cooperation.

Still further, the driving motor shaft is a worm 21 type motor shaft; and the input gear 31 is engaged with the worm 21 type motor shaft. When the multi-stage transmission mechanism works, the motor shaft drives the worm 21 to rotate, the worm 21 drives the input gear 31 to rotate, the input gear 31 drives the multi-stage transmission gear set to rotate, and the multi-stage transmission is carried out, and finally the final-stage transmission gear 37 drives the output shaft gear 38 to rotate, so that the output shaft 39 is driven to rotate.

In more detail, as an alternative case illustrated in the accompanying drawings, the multi-stage transmission gear set includes a first-stage transmission gear 32 coaxially connected to the input gear 31, a second-stage main transmission gear 33 connected to the first-stage transmission gear 32, a second-stage sub-transmission gear 34 coaxially connected to the second-stage main transmission gear 33, a third-stage main transmission gear 35 connected to the second-stage sub-transmission gear 34, a third-stage sub-transmission gear 36 coaxially connected to the third-stage main transmission gear 35, and a final-stage transmission gear 37 connected to the third-stage sub-transmission gear 36; wherein the first stage transmission gear 32 and the output gear are adapted to rotate synchronously; the second-stage main transmission gear 33 and the second-stage auxiliary transmission gear 34 synchronously rotate; and the third stage final drive gear 35 rotates synchronously with the third stage secondary drive gear 36.

On the basis of the above structure, the first stage transmission gear 32 and the input gear 31 are provided on the first transmission shaft 41 together, and the first stage transmission gear 32 and the input gear 31 can rotate around the first transmission shaft 41.

The third-stage main transmission gear 35 and the third-stage auxiliary transmission gear 36 are arranged on the second transmission shaft 42 together, and the third-stage main transmission gear 35 and the third-stage auxiliary transmission gear 36 can rotate around the second transmission shaft 42; optionally, the third stage main transmission gear 35 and the third stage auxiliary transmission gear 36 are integrally formed.

The second-stage main transmission gear 33, the second-stage sub-transmission gear 34 and the final transmission gear 37 are commonly arranged on the third transmission shaft 43, and the second-stage main transmission gear, the second-stage sub-transmission gear 34 and the final transmission gear 37 can rotate around the third transmission shaft 43.

The first transmission shaft 41, the second transmission shaft 42 and the third transmission shaft 43 in this embodiment are all fixedly connected with the housing to ensure that the first transmission shaft 41, the second transmission shaft 42 and the third transmission shaft 43 do not generate rotational movement relative to the housing.

In addition, it should be noted that, in the flip cover driving device of the present embodiment, the reinforcing plate 6 of the present embodiment is further provided with a fitting hole 62 for fitting the output shaft 39 and a fitting hole 63 for fitting the second transmission shaft 42, that is, for the integral reinforcing plate 6, not only the function of embodiment 1 is achieved, but also the positioning function during the operation of the output shaft 39 and the second transmission shaft 42 can be achieved simultaneously, so as to reduce the probability of the output shaft 39 and the second transmission shaft 42 tilting during long-term use. In this embodiment, the reinforcing plate 6 is installed between the second casing 12 and the third casing 13, and is pressed and fixed by the second casing 12 and the third casing 13.

Finally, regarding the flip cover driving apparatus of the present embodiment, it should be further noted that, in order to improve the structural stability, the third transmission shaft 43 includes a large outer diameter shaft 431 and a small outer diameter shaft 432 which are integrally formed; the outer diameter of the small outer diameter shaft 432 is smaller than that of the large outer diameter shaft 431; and a large-outer-diameter shaft 431 for forming a rotational support for the second-stage main transmission gear 33, the second-stage sub-transmission gear 34, and the final transmission gear 37, and a small-outer-diameter shaft 432 for penetrating the driving portion 373 of the final transmission gear 37.

Based on the above structure, that is, the integral third transmission shaft 43 is a stepped shaft, the reason for this design is that, since the diameter of the cylinder through which the detection hole 51 of the potentiometer 5 can coaxially pass is small, if the stepped shaft is not provided, the overall diameter of the integral third transmission shaft 43 is small, which reduces the overall structural strength of the third transmission shaft 43. Therefore, the present embodiment designs the portion for forming the rotational support for the second-stage main gear 33, the second-stage sub-gear 34, and the final gear 37 as the large-diameter shaft 431, so that the third transmission shaft 43 is not easily bent or sheared by the radial force of the second-stage main gear 33, the second-stage sub-gear 34, and the final gear 37.

In summary, in the flip cover device of the present embodiment, the potentiometer is directly engaged with the final transmission gear 37, and the final transmission gear 37 itself is an inherent structure in the multi-stage transmission gear set of the flip cover driving device, so that it is not necessary to specially add a detection gear for engaging with the potentiometer 5, firstly, the structure of the entire rotation angle detection assembly can be simplified from the structure itself, secondly, the cost can be reduced from the assembly and material cost, and the potentiometer 5 directly detects the rotation angle of the final transmission gear 37 under the simplified structure, and the final transmission gear 37 is directly engaged with the output shaft assembly, so that the transmission chain required for detecting the potentiometer 5 can be shortened based on the transmission chain, and the entire detection accuracy can be improved.

The above embodiments further describe the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms indicating the orientation or the positional relationship are based on the orientation or the positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the indicated device or element 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 present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the present disclosure, unless expressly stated or limited otherwise, a first feature may comprise a first and a second feature in direct contact, or the first and second features may be in contact by means of another feature not in direct contact but in between. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature being below, beneath or beneath a second feature includes the first feature being directly below and obliquely below the second feature or simply indicating that the first feature is at a lesser level than the second feature.

Claims

1. A rotation angle detecting assembly, comprising: the final transmission gear is used for detecting a potentiometer of the rotation angle of the final transmission gear; wherein

2. The rotation angle detecting assembly according to claim 1, wherein the driving portion is a columnar structure having a notched circle in cross section.

3. The rotation angle detecting assembly according to claim 1 or 2, wherein the final drive gear includes a gear plate, a support portion coaxially secured to an axial end of the gear plate facing the potentiometer, and the driving portion provided on an axial end face of the support portion facing away from the gear plate; and

4. The rotation angle detecting assembly according to claim 3, further comprising a reinforcing plate for fixing the potentiometer; and

5. The rotation angle detecting assembly according to claim 4, wherein the reinforcing plate is made of a metal material.

6. A flip cover driving apparatus, comprising:

a motor assembly having a drive motor shaft;

the rotation angle detecting assembly according to any one of claims 1 to 5, wherein a final transmission gear in the rotation angle detecting assembly is a final transmission gear in the output assembly.

7. The flip driving apparatus according to claim 6, wherein the driving motor shaft is a worm motor shaft; and

the input gear is meshed with a worm type motor shaft.

8. The flip cover driving device according to claim 6 or 7, wherein the multi-stage transmission gear set includes a first stage transmission gear coaxially connected to the input gear, a second stage main transmission gear connected to the first stage transmission gear, a second stage sub-transmission gear coaxially connected to the second stage main transmission gear, a third stage main transmission gear connected to the second stage sub-transmission gear, and a third stage sub-transmission gear coaxially connected to the third stage main transmission gear, and the final stage transmission gear connected to the third stage sub-transmission gear; wherein

the second-stage main transmission gear and the second-stage auxiliary transmission gear rotate synchronously; and

and the third-stage main transmission gear and the third-stage auxiliary transmission gear synchronously rotate.

9. The flip cover driving apparatus according to claim 8, wherein the first stage transmission gear is connected to the input gear together with a first transmission shaft; and

and the second-stage main transmission gear, the second-stage auxiliary transmission gear and the final-stage transmission gear are connected with a third transmission shaft.

10. The flip cover driving apparatus according to claim 9, wherein the third transmission shaft includes a large outer diameter shaft and a small outer diameter shaft which are integrally formed;