Output shaft assembly suitable for automatic cover opening and closing device and intelligent closestool

Abstract

The utility model discloses an output shaft assembly suitable for an automatic cover opening and closing device and an intelligent closestool. The output shaft assembly comprises an output shaft body and a torsional spring arranged on the output shaft body in a sleeving mode. The output shaft body is provided with a connecting part used for being matched with one shaft side end of the torsion spring in an abutting mode. A first spiral adaptive surface is formed on the end surface, propped against and matched with the torsional spring, of the connecting part; the other shaft side end of the torsion spring is suitable for being matched with a shell of the automatic cover opening and closing device. An axial limiting part used for being matched with the shaft side end of the torsional spring in an abutting mode is arranged in the shell, and a second spiral adaptive face is formed on the end face, matched with the torsional spring in an abutting mode, of the axial limiting part. According to the automatic cover opening and closing device, the deformation process of the torsion spring is reliable and stable, the torsion value is more accurate, the probability that the torsion spring is abraded due to the fact that the shapes of matching surfaces between the torsion spring and the axial limiting part and between the torsion spring and the connecting part are not matched after long-term use can be reduced, and therefore the service life of the whole automatic cover opening and closing device can be prolonged.

Description

Technical Field

[0001] The utility model relates to the field of intelligent toilets, in particular to an output shaft assembly applicable to an automatic opening and closing cover device and an intelligent toilet. Background Art

[0002] The development of smart home is in full swing, and various smart household appliances are emerging one after another. The intelligent toilet is one of the smart home products deeply welcomed by consumers. The use of an intelligent toilet is inseparable from its toilet lid that can be automatically opened and closed. For this purpose, an automatic opening and closing cover device is required to realize the automatic opening and closing of the toilet lid.

[0003] Specifically, in combination with the conventional automatic opening and closing cover device used in the prior art, its general principle is to realize the opening and closing of the toilet cover plate through the cooperation of a motor, a reduction gear set, an output shaft body and a torsion spring arranged on the output shaft body. When the automatic opening and closing cover device closes the toilet seat or the toilet lid, the torsion spring will be compressed to store energy. When the toilet seat or the toilet lid is opened, the torsion spring will gradually release the torsion force to play a boosting role.

[0004] In this regard, the patent No. CN215687379U discloses a toilet automatic flapping motor, and a torsion spring structure is arranged between the outer side of its output shaft and the left shell / right shell. The two ends of the torsion spring structure are respectively connected to the output shaft and the shell through a radially extending head, and the radial limit of the torsion spring structure is realized through the two radially extending heads, so that the torsion spring structure can be deformed as the output shaft rotates. For the torsion spring structure in this disclosed technology, it is found through research that during the deformation process of the torsion spring structure, it is only subjected to the radial limiting effect, and there is a problem that the torsion value during the deformation process of the torsion spring structure is inaccurate due to the lack of axial force, and there is also a problem of short service life of the torsion spring structure.

[0005] Based on the above situation, the patent No. CN215993787U discloses a rotation angle execution device for a toilet cover plate. A convex portion extends radially along the side surface of its output shaft body. The rotation angle execution device for the toilet cover plate further includes a torsion spring, which has the effects of elasticity and reset. The torsion spring is sleeved on the output shaft body, and its two ends respectively abut against the shell and the convex portion. For the torsion spring adopted in this disclosed technology, although the two axial ends of the torsion spring achieve the abutting fit with the shell and the convex portion, for the two axial side ends of the torsion spring, they are not flat end faces but spiral faces. Therefore, the traditional abutting fit is likely to cause wear of the mating surface after long-term use. Considering the long service cycle of the intelligent toilet in actual home life, the wear will cause poor later use conditions and even shorten the service life.

[0006] Therefore, in view of some problems existing in the torsion springs generally used in the automatic opening and closing cover devices of intelligent toilets in the prior art, it is necessary to further optimize their structures. Summary of the Invention

[0007] The first object of the present invention is to provide an output shaft assembly applicable to an automatic opening and closing cover device to solve the technical problem of optimizing its overall service performance to extend its service life.

[0008] The second object of the present invention is to provide an intelligent toilet to solve the technical problem of optimizing the overall service performance of the output shaft assembly in the automatic opening and closing cover device adopted by it to extend its service life.

[0009] The output shaft assembly applicable to the automatic opening and closing cover device of the present invention is realized as follows:

[0010] An output shaft assembly applicable to an automatic opening and closing cover device includes: an output shaft body and a torsion spring used in cooperation; wherein

[0011] An engaging portion for abutting and cooperating with one axial end of the torsion spring is provided on the output shaft body;

[0012] A first spiral mating surface is formed on the end surface where the engaging portion abuts and cooperates with the torsion spring; and

[0013] The other axial end of the torsion spring is adapted to cooperate with the housing of the automatic opening and closing cover device; an axial limiting portion for abutting and cooperating with this axial end of the torsion spring is provided in the housing, and a second spiral mating surface is formed on the end surface where the axial limiting portion abuts and cooperates with the torsion spring.

[0014] In an optional embodiment of the present invention, the first spiral mating surface and the second spiral mating surface have the same helix direction and pitch as the axial end surface of the torsion spring with which they respectively abut and cooperate.

[0015] In an optional embodiment of the present invention, the first spiral mating surface is a continuously distributed surface structure or a segmented surface structure formed by being spaced apart and jointly combined to form a spiral structure.

[0016] In an optional embodiment of the present invention, the second spiral mating surface is a continuously distributed surface structure or a segmented surface structure formed by being spaced apart and jointly combined to form a spiral structure.

[0017] In an optional embodiment of the present invention, the engaging portion is a part of the structure of the output shaft body.

[0018] In an optional embodiment of the present invention, the engaging portion is an output gear assembled on the output shaft body for driving the output shaft body to rotate.

[0019] In an alternative embodiment of the present utility model, the torsion spring is connected to the axial limiting portion through a first clamping joint extending radially along the inner diameter hole thereof; and

[0020] The axial limiting portion is further provided with a first clamping groove adapted to the first clamping joint.

[0021] In an alternative embodiment of the present utility model, the torsion spring is connected to the connecting portion through a second clamping joint extending axially along it; and

[0022] The connecting portion is further provided with a second clamping groove adapted to the second clamping joint.

[0023] In an alternative embodiment of the present utility model, the torsion spring is sleeved on the output shaft body, and the outer diameter of the output shaft body is smaller than the inner diameter of the torsion spring; or

[0024] A columnar limiting portion adapted to penetrate the inner hole of the torsion spring is provided in the housing, and the outer diameter of the columnar limiting portion is smaller than the inner diameter of the torsion spring.

[0025] In an alternative embodiment of the present utility model, the torsion spring is partially sleeved on the output shaft body, and the outer diameter of the output shaft body is smaller than the inner diameter of the torsion spring; and

[0026] And a columnar limiting portion adapted to be inserted into the inner hole of the torsion spring and not in contact with the output shaft body is provided in the housing, and the outer diameter of the columnar limiting portion is smaller than the inner diameter of the torsion spring.

[0027] The intelligent toilet of the present utility model is realized as follows:

[0028] An intelligent toilet, comprising: the output shaft assembly applicable to the automatic opening and closing cover device described above.

[0029] Adopting the above technical solutions, the present utility model has the following beneficial effects: For the output shaft assembly applicable to the automatic opening and closing cover device and the intelligent toilet of the present utility model, firstly, for the two axial ends of the torsion spring, the axial limiting and supporting effects during its deformation process are respectively realized through the axial limiting portion of the housing and the connecting portion of the output shaft body, so that the deformation process of the torsion spring is reliable and stable, and the torque value is more accurate. Furthermore, through the design of the first spiral matching surface and the second spiral matching surface, the matching of the spiral surfaces of the two axial ends of the torsion spring is realized, thereby reducing the probability of wear between the torsion spring and the axial limiting portion and the connecting portion due to the mismatch of the mating surface shapes during long-term use, and thus the service life of the overall automatic opening and closing cover device can be extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic structural diagram of the output shaft assembly of the present utility model specifically applied to the automatic opening and closing cover device;

[0031] Figure 2Partial structural schematic diagram of the automatic cover opening and closing device applicable to the output shaft assembly of the present utility model;

[0032] Figure 3 Partial sectional structural schematic diagram of the automatic cover opening and closing device applicable to the output shaft assembly of the present utility model;

[0033] Figure 4 Structural schematic diagram of the torsion spring of the output shaft assembly of the present utility model;

[0034] Figure 5 Structural schematic diagram of the cooperation between the torsion spring and the output shaft body of the output shaft assembly of the present utility model;

[0035] Figure 6 Structural schematic diagram of the first helical mating surface of the output gear of the output shaft assembly of the present utility model;

[0036] Figure 7 First perspective structural schematic diagram of the axial limiting portion of the output shaft assembly of the present utility model;

[0037] Figure 8 First perspective structural schematic diagram of the axial limiting portion of the output shaft assembly of the present utility model in a state of cooperation with the torsion spring;

[0038] Figure 9 Second perspective structural schematic diagram of the axial limiting portion of the output shaft assembly of the present utility model in a state of cooperation with the torsion spring;

[0039] Figure 10 Second perspective structural schematic diagram of the axial limiting portion of the output shaft assembly of the present utility model;

[0040] Figure 11 Third perspective structural schematic diagram of the axial limiting portion of the output shaft assembly of the present utility model.

[0041] In the figure: housing 1, motor 2, reduction gear set 3, output shaft body 4, torsion spring 5, first clamping joint 51, second clamping joint 52, first helical mating surface 6, second helical mating surface 7, rib 8, output gear 9, second clamping groove 91, axial limiting portion 10, first clamping groove 101, columnar limiting portion 102. Detailed implementation manners

[0042] In order to make the content of the present utility model more clearly understood, the following further details the present utility model according to specific embodiments and in conjunction with the accompanying drawings.

[0043] Embodiment 1:

[0044] Please refer to Figures 1 to 11As shown in the figure, this embodiment provides an output shaft assembly applicable to an automatic lid opening and closing device. The automatic lid opening and closing device here can be any technical solution that has been maturely applied in the cover plate of a smart toilet in the prior art, that is, it generally includes a housing 1, a motor 2, a reduction gear set 3, an output shaft body 4, and a torsion spring 5. For the specific implementation principle of the torsion spring 5, this embodiment does not make any improvements either. This embodiment mainly explains how to improve the reliable stability of the torsion spring 5 during use from the cooperation level of the output shaft body 4, the torsion spring 5, and the housing 1.

[0045] Generally speaking, an engagement portion for abutting and cooperating with one axial side end of the torsion spring 5 is provided on the output shaft body 4; a first spiral mating surface 6 is formed on the end surface where the engagement portion abuts and cooperates with the torsion spring 5; and the other axial side end of the torsion spring 5 is adapted to cooperate with the housing 1 of the automatic lid opening and closing device. An axial limiting portion 10 for abutting and cooperating with this axial side end of the torsion spring 5 is provided in the housing 1, and a second spiral mating surface 7 is formed on the end surface where the axial limiting portion 10 abuts and cooperates with the torsion spring 5.

[0046] Based on the above situation, for the two axial side ends of the torsion spring 5, the axial limiting and supporting effects during its deformation process are respectively realized through the axial limiting portion 10 of the housing 1 and the engagement portion of the output shaft body 4, so that the deformation process of the torsion spring 5 is reliable and stable, and the torque value is more accurate. Furthermore, the cooperation of the spiral surfaces of the two axial side ends of the torsion spring 5 is realized through the design of the first spiral mating surface 6 and the second spiral mating surface 7, thereby reducing the probability of wear between the torsion spring 5 and the axial limiting portion and the engagement portion due to the mismatch of the mating surface shapes during long-term use.

[0047] In this regard, in order to better exert the supporting and cooperating effects of the first spiral mating surface 6 and the second spiral mating surface 7 on the two axial side ends of the torsion spring 5, it should be noted that the first spiral mating surface 6 and the second spiral mating surface 7 have the same helix direction and pitch as the axial end surfaces of the torsion spring 5 with which they abut and cooperate respectively.

[0048] Regarding the structures of the first spiral mating surface 6 and the second spiral mating surface 7 adopted in this embodiment, both of them can be a continuously distributed surface structure or a segmented surface structure formed by being spaced apart and jointly combined to form a spiral structure. In this regard, this embodiment only gives an optional example. The first spiral mating surface 6 is a continuously distributed surface structure on the engagement portion, and the second spiral mating surface 7 is a segmented surface structure formed in the form of ribs 8 on the axial limiting portion 10.

[0049] Next, it is necessary to explain that regarding the connection part involved in this embodiment, in an alternative embodiment, the connection part is a part of the structure of the output shaft body 4, and in this case, the connection part can be integrally formed on the output shaft body 4. In another alternative embodiment, the connection part is an output gear 9 assembled on the output shaft body 4 and used to drive the output shaft body 4 to rotate. The above two different situations theoretically meet the usage requirements of this embodiment. This embodiment will only take the case where the connection part adopts the output gear 9 as an example for illustration in combination with the accompanying drawings.

[0050] Furthermore, for the limitation of the torsion spring 5, in addition to the abutment at both axial ends, this embodiment also makes the following design:

[0051] First, the torsion spring 5 is connected to the axial limiting part 10 through a first clamping head 51 extending radially along the inner diameter hole thereof; and the axial limiting part 10 is also provided with a first clamping groove 101 adapted to the first clamping head 51. Second, the torsion spring 5 is connected to the connection part through a second clamping head 52 extending axially along it; and the connection part is also provided with a second clamping groove 91 adapted to the second clamping head 52. The first clamping head 51 and the first clamping groove 101, as well as the second clamping head 52 and the second clamping groove 91, can all adopt, for example but not limited to, the clearance fit method, which is easy to process and assemble. In this structure, for the overall torsion spring 5, its overall deformation process is more accurate and reliable, and the torque value is also more accurate.

[0052] Finally, it is also necessary to explain that for the deformation process of the torsion spring 5, it is also necessary to limit the form of its deformation (here mainly by limiting the radial layer of the inner hole of the torsion spring 5). For this, an axial positioning part needs to be designed in the inner hole of the torsion spring 5. To meet this usage requirement, this embodiment makes the following design:

[0053] In the first embodiment, the torsion spring 5 is sleeved on the output shaft body 4, and the outer diameter of the output shaft body 4 is smaller than the inner diameter of the torsion spring 5; at this time, that is to say, for the axial limiting part 10 of the housing 1, it only needs to be in abutting cooperation with one axial end of the torsion spring 5.

[0054] In the second embodiment, a columnar limiting part 102 adapted to penetrate the inner hole of the torsion spring 5 is provided in the housing 1, and the outer diameter of the columnar limiting part 102 is smaller than the inner diameter of the torsion spring 5. At this time, that is to say, for the output shaft body 4, it only needs to make the output gear 9 on the output shaft body 4 be in abutting cooperation with one axial end of the torsion spring 5.

[0055] In the case of the third embodiment, the torsion spring 5 is partially sleeved on the output shaft body 4, and the outer diameter of the output shaft body 4 is smaller than the inner hole diameter of the torsion spring 5; and a columnar limiting portion 102 adapted to be inserted into the inner hole of the torsion spring 5 and not in contact with the output shaft body 4 is provided in the housing 1, and the outer diameter of the columnar limiting portion 102 is smaller than the inner hole diameter of the torsion spring 5. Here, for the outer diameter of the shaft body inserted into the inner hole of the torsion spring 5 by the output shaft body 4 and the outer diameter of the columnar limiting portion 102, they can be the same or different, and this embodiment does not make an absolute limitation on this. However, it should be noted that when the torsion spring 5 is assembled in place with the output shaft body 4 and the columnar limiting portion 102 at the same time, for the case where the output shaft body 4 and the columnar limiting portion 102 are not in contact, there can be a certain gap between them axially, and this gap should not be too large; or there can be a certain gap between them radially, and the gap should also not be too large at this time. That is, as long as the output shaft body 4 and the columnar limiting portion 102 do not interfere with each other and can simultaneously realize the radial positioning when the torsion spring 5 deforms, it can theoretically meet the usage requirements here.

[0056] In summary, for the output shaft assembly applicable to the automatic cover opening and closing device of this embodiment, the deformation process of the torsion spring 5 is reliable and stable, the torsion value is more accurate, and the probability of wear caused by the mismatch of the mating surface shapes between the torsion spring 5 and the axial limiting portion 10 and the connecting portion under long-term use can be reduced, thereby extending the service life of the overall automatic cover opening and closing device.

[0057] Embodiment 2:

[0058] On the basis of the output shaft assembly applicable to the automatic cover opening and closing device in Embodiment 1, this embodiment provides a smart toilet, including: the output shaft assembly applicable to the automatic cover opening and closing device in Embodiment 1. The corresponding automatic cover opening and closing device here can be applied to the toilet seat or toilet lid of the smart toilet. When the automatic cover opening and closing device closes the toilet seat or toilet lid, the torsion spring 5 will be compressed to store energy, and when the toilet seat or toilet lid is opened, the torsion spring 5 will gradually release the torsion to play a boosting role.

[0059] In the above specific embodiments, the purpose, technical solution and beneficial effects of the present invention have been further described in detail. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

[0060] In the description of the present utility model, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model.

[0061] In the present utility model, unless otherwise clearly defined and limited, terms such as "installed", "connected", "connected to", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0062] In the description of the present utility model, it should be noted that the terms indicating orientation or positional relationship such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0063] In addition, terms such as "horizontal", "vertical", "hanging" do not mean that the component is required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0064] In the present utility model, unless otherwise clearly defined and limited, the first feature being above or below the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being above, over and on the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being below, under and beneath the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

Claims

1. An output shaft assembly suitable for an automatic cover opening and closing device, characterized in that: include: Output shaft and torsion spring for use together; The output shaft body is provided with a connecting portion for abutting and cooperating with one shaft side end of the torsion spring; The end surface of the connecting portion that abuts against the torsion spring forms a first spiral matching surface; and The other axial side end of the torsion spring is suitable for cooperating with the shell of the automatic opening and closing cover device; the shell is provided with an axial limiting portion for abutting and cooperating with the axial side end of the torsion spring, and the end surface of the axial limiting portion abutting and cooperating with the torsion spring forms a second spiral matching surface.

2. The output shaft assembly suitable for the automatic cover opening and closing device according to claim 1, characterized in that: The first spiral matching surface and the second spiral matching surface have the same rotation direction and pitch as the axial end surface of the torsion spring that they abut against and match.

3. The output shaft assembly suitable for the automatic cover opening and closing device according to claim 1 or 2, characterized in that: The first spiral adaptation surface is a continuously distributed surface structure or a segmented surface structure that is arranged at intervals and combined together to form a spiral structure.

4. The output shaft assembly suitable for an automatic cover opening and closing device according to claim 1 or 2, characterized in that: The second spiral adaptation surface is a continuously distributed surface structure or a segmented surface structure that is arranged at intervals and combined together to form a spiral structure.

5. The output shaft assembly suitable for the automatic cover opening and closing device according to claim 1, characterized in that: The connecting portion is a structural part of the output shaft body.

6. The output shaft assembly suitable for the automatic cover opening and closing device according to claim 1, characterized in that: The connecting portion is an output gear assembled on the output shaft body and used for driving the output shaft body to rotate.

7. The output shaft assembly suitable for the automatic cover opening and closing device according to claim 1, characterized in that: The torsion spring is connected to the axial limiting portion via a first clamping joint extending radially along the inner diameter hole of the torsion spring; and The axial limiting portion is also provided with a first locking groove adapted to the first locking joint.

8. The output shaft assembly suitable for the automatic cover opening and closing device according to claim 1 or 7, characterized in that: The torsion spring is connected to the connecting portion via a second clamping joint extending along the axial direction thereof; and The connecting portion is also provided with a second locking groove adapted to the second locking connector.

9. The output shaft assembly suitable for the automatic cover opening and closing device according to claim 1, characterized in that: The torsion spring is sleeved on the output shaft, and the outer diameter of the output shaft is smaller than the inner hole diameter of the torsion spring; or The housing is provided with a columnar limiting portion suitable for penetrating the inner hole of the torsion spring, and the outer diameter of the columnar limiting portion is smaller than the inner hole diameter of the torsion spring.

10. The output shaft assembly suitable for the automatic cover opening and closing device according to claim 1, characterized in that: The torsion spring is partially sleeved on the output shaft, and the outer diameter of the output shaft is smaller than the inner hole diameter of the torsion spring; and The housing is provided with a columnar limiting portion which is suitable for being inserted into the inner hole of the torsion spring and is not in contact with the output shaft body, and the outer diameter of the columnar limiting portion is smaller than the inner hole diameter of the torsion spring.

11. A smart toilet, characterized in that: include: An output shaft assembly suitable for an automatic cover opening and closing device as claimed in any one of claims 1 to 10.

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