Driving device and closestool unit
By introducing bearing components into the intelligent toilet driving device to support the worm, the problem of poor bending performance of the worm is solved, the transmission accuracy and efficiency are improved, and the worm damage is prevented.
Patent Information
- Application Number
- CN202422183924.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-05
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-09-05
AI Technical Summary
The worms in existing smart toilet drive devices have poor bending resistance and are prone to bending and deforming under external forces, resulting in reduced transmission accuracy or damage to the worm.
The bearing member is introduced in the drive device, which is arranged around the radial outer periphery of the worm, providing support to improve bending performance of the worm, and providing appropriate support under different operating conditions through the first and second support portions to prevent excessive deformation of the worm.
The bending resistance of the worm is improved, the transmission accuracy of the drive device is ensured, and excessive deformation and damage of the worm is prevented. At the same time, unnecessary friction resistance is reduced and transmission efficiency is improved.
Smart Images
Figure CN222955346U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a driving device and a toilet unit, and more specifically, to a driving device with higher reliability and a corresponding toilet unit. Background Art
[0002] A driving device is provided inside an intelligent toilet for automatically opening or closing the toilet lid. Since a worm can achieve a large transmission ratio with a small volume, in order to miniaturize the driving device, the driving device includes a worm. However, in the prior art, the worm has poor bending resistance, and the worm is prone to bending deformation under the action of external forces, damaging the transmission accuracy or directly causing the worm to be damaged.
[0003] Therefore, it is desirable to propose a driving device to improve the defects of the prior art. Summary of the Utility Model
[0004] According to a first aspect of the present disclosure, a driving device is provided, including: a motor having a rotating shaft; an output shaft configured to output power to the outside of the driving device; a transmission assembly, one end of which is connected to the rotating shaft and the other end is connected to the output shaft to transmit the power of the motor to the output shaft, the transmission assembly including a worm, and the worm is coupled to the rotating shaft; wherein, the driving device further includes a bearing member, the bearing member is at least partially disposed around the radial outer periphery of the worm, and the worm is rotatably connected to the bearing member.
[0005] According to this solution, the bearing member can provide support for the worm, improve the bending resistance of the worm, and ensure the transmission accuracy of the driving device. In addition, the worm is only connected to the bearing member, improving its assembly accuracy.
[0006] In some solutions, the worm may have two axial ends and a worm portion between the two axial ends, and the worm portion is connected to a downstream transmission member of the transmission assembly in a worm-gear meshing manner; the bearing member includes a first support portion and a second support portion, the first support portion is disposed around the axial end, and the second support portion is disposed around the worm portion.
[0007] According to this solution, the first support portion is used to support the axial end of the worm, and the second support portion is used to support the worm portion of the worm.
[0008] In some solutions, the first support portion may have a through hole, and the axial end passes through the through hole; the second support portion has a semi-circular cylindrical inner wall, and the cylindrical inner wall is disposed around the worm portion.
[0009] In some solutions, the second support portion may be in clearance fit with the worm portion.
[0010] According to this solution, when the driving device is operating normally, the second supporting part does not contact the worm part, reducing unnecessary frictional resistance, thereby improving the transmission efficiency. When the worm is deformed due to improper operation by the user, the second supporting part can support the worm part, preventing the worm part from being excessively deformed and damaged.
[0011] In some solutions, the second supporting part can be in clearance fit with the tooth top surface of the worm part.
[0012] According to this solution, when the worm is deformed due to improper operation by the user, the second supporting part contacts the tooth top surface to support the worm part, avoiding the wear of the meshing surface of the worm part while the second supporting part plays a supporting role, and ensuring the transmission accuracy of the driving device.
[0013] In some solutions, the driving device can further include: a first housing, the motor is arranged in the first housing; a second housing, the transmission component is arranged in the second housing; a third housing, the output shaft is arranged in the third housing; the second housing is located between the first housing and the third housing, and the first housing, the second housing and the third housing together enclose to form the internal space of the driving device, and the bearing component is fixed to the first housing and the second housing.
[0014] In some solutions, the bearing component can have a first limiting part and a second limiting part, the first housing has a first mating limiting part, the second housing has a second mating limiting part, the first limiting part cooperates with the first mating limiting part to fix the bearing component to the first housing, and the second limiting part cooperates with the second mating limiting part to fix the bearing component to the second housing.
[0015] In some solutions, the first limiting part can be a protrusion, the first mating limiting part can be a recess, and / or the second limiting part can be a protrusion, the second mating limiting part can be a recess, and the protrusion is inserted into the corresponding recess.
[0016] According to this solution, the bearing component is not positioned by side surface fitting of the housing, improving the defect that the positioning accuracy of the bearing component is low due to the influence of the draft angle of the housing.
[0017] In some solutions, the bearing component can be made of an elastic material.
[0018] According to this solution, when installing the bearing component, the bearing component can first be bent within the elastic deformation range, then the axial end of the worm is inserted into the corresponding through hole, and finally the bearing component is released, and the deformed structure of the bearing component naturally returns to realize the limiting and supporting effect on the worm.
[0019] In some solutions, the transmission component can include a first gear installed on the rotating shaft, and the worm also has a gear part located between two axial ends, and the gear part meshes with the first gear.
[0020] In some embodiments, the transmission assembly may further include a second gear, a third gear, and a fourth gear. The worm portion meshes with the second gear to form a worm and worm wheel engagement. The third gear meshes with the second gear, and the fourth gear meshes with the third gear. The fourth gear is connected to the output shaft. The power output by the motor is transmitted to the output shaft sequentially via the first gear, the worm, the second gear, the third gear, and the fourth gear.
[0021] According to a second aspect of the present disclosure, there is provided a toilet unit, including: the driving device according to the first aspect of the present disclosure; a toilet lid rotatably connected to the output shaft. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 A schematic diagram of a driving device according to an embodiment of the present disclosure is shown;
[0023] Figure 2 An exploded view of a driving device according to an embodiment of the present disclosure is shown;
[0024] Figure 3 A partial cross-sectional view of a driving device according to an embodiment of the present disclosure is shown;
[0025] Figure 4 Shown is Figure 3 a cross-sectional view from another perspective of
[0026] Figure 5 A schematic diagram of a bearing component according to an embodiment of the present disclosure is shown;
[0027] Figure 6 A schematic diagram of the cooperation between a worm and a bearing component according to an embodiment of the present disclosure is shown;
[0028] Figure 7 A schematic diagram of a first housing according to an embodiment of the present disclosure is shown;
[0029] Figure 8 A schematic diagram of a second housing according to an embodiment of the present disclosure is shown;
[0030] Reference Signs:
[0031] 100 Driving device
[0032] 110 Motor
[0033] 112 Rotating shaft
[0034] 120 Transmission assembly
[0035] 122 First gear
[0036] 124 Second gear
[0037] 126 Third gear
[0038] 128 Fourth gear
[0039] 130 Worm
[0040] 132 Axial end
[0041] 134 Worm part
[0042] 135 Tooth top surface
[0043] 136 Gear part
[0044] 140 Output shaft
[0045] 150 Bearing component
[0046] 152 First support part
[0047] 154 Second support part
[0048] 156 First limiting part
[0049] 158 Second limiting part
[0050] 162 First housing
[0051] 163 First mating and limiting part
[0052] 164 Second housing
[0053] 165 Second mating and limiting part
[0054] 166 Third housing Detailed implementation manners
[0055] In order to make the objectives, solutions, and advantages of the technical solutions of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present disclosure. Unless otherwise specified, the terms used herein have the ordinary meanings in the art. The same reference numerals in the drawings represent the same components.
[0056] Figure 1FIG. 0 shows a schematic diagram of a drive device 100 according to an embodiment of the present disclosure. The drive device 100 is configured to output power externally and can be used, for example, to drive the opening or closing of a toilet lid of a toilet unit. The drive device 100 mainly includes a motor 110, a transmission assembly 120, and an output shaft 140. The motor 110 has a rotating shaft 112. One end of the transmission assembly 120 is connected to the rotating shaft 112, and the other end is connected to the output shaft 140 to transmit the power of the motor 110 to the output shaft 140, and then output the power externally through the output shaft 140. For example, the output shaft 140 is connected to the toilet lid, and the rotation of the output shaft 140 drives the rotation of the toilet lid, so that the drive device 100 controls the opening or closing of the toilet lid. In order to obtain a larger transmission ratio in a smaller space, the transmission assembly 120 includes a worm 130. One end of the worm 130 is directly or indirectly connected to the rotating shaft 112, and the other end is connected to a downstream transmission component (e.g., a second gear 124) in a worm and worm gear meshing manner.
[0057] Under some specific application conditions of the drive device 100, for example, when the drive device 100 is used to drive the opening or closing of a toilet lid, the space occupied by the drive device 100 is relatively small, making the radial dimension of the worm 130 relatively thin, resulting in poor strength of the worm 130. For example, when a user manually operates the toilet lid, the worm 130 may be subjected to a large external force and bend, resulting in a decrease in the transmission accuracy of the transmission assembly 120. The worm 130 may even break under a greater external force. As Figure 3 and Figure 4 shown, in order to improve the strength of the worm 130 without significantly increasing the cost of the drive device 100, the drive device 100 proposed by the present disclosure further includes a bearing component 150. The bearing component 150 is disposed around the outer periphery of the worm 130, and the worm 130 is rotatably connected to the bearing component 150. The bearing component 150 can provide support for the worm 130, improve the bending resistance of the worm 130, and ensure the transmission accuracy of the drive device 100. In addition, the bearing component 150 can also prevent the worm 130 from being excessively deformed and broken, improving the stability of the drive device 100.
[0058] Specifically, as Figure 6 shown, the worm 130 can have two axial ends 132 and a worm portion 134 between the two axial ends 132. The worm portion 134 is connected to a downstream transmission component (e.g., a second gear 124) of the transmission assembly 120 in a worm and worm gear meshing manner. Preferably, as Figure 5As shown, the bearing component 150 may include a first support portion 152 and a second support portion 154. The first support portion 152 is disposed around the axial end 132, and the second support portion 154 is disposed around the worm portion 134. The first support portion 152 is used to support the axial end 132 of the worm 130, and the second support portion 154 is used to support the worm portion 134 of the worm 130. In particular, the first support portion 152 may have a through hole, and the axial end 132 of the worm 130 passes through the through hole. The second support portion 154 may have a semi-circular cylindrical inner wall that surrounds the worm portion 134 of the worm 130.
[0059] Preferably, the second support portion 154 of the bearing component 150 may be in clearance fit with the worm portion 134 of the worm 130. When the drive device 100 is operating normally, the second support portion 154 of the bearing component 150 does not contact the worm portion 134 of the worm 130, reducing unnecessary frictional resistance and thus improving the transmission efficiency of the drive device 100. When the worm 130 is deformed due to improper operation by the user, the second support portion 154 of the bearing component 150 can support the worm portion 134 of the worm 130 to prevent the worm 130 from being excessively deformed and damaged. In other words, under normal operating conditions, the strength of the worm 130 is sufficient to achieve the corresponding transmission function, and the second support portion 154 of the bearing component 150 is not required to support the worm 130. Only under abnormal operating conditions (for example, when the user applies too much force to the toilet lid, and this force is transmitted to the worm 130 through the transmission component 120, causing the worm 130 to bend and deform), the strength of the worm 130 is insufficient to achieve the corresponding transmission function, and the second support portion 154 of the bearing component 150 is required to support the worm 130. The clearance fit between the second support portion 154 of the bearing component 150 proposed in the present disclosure and the worm 130 realizes the corresponding support required by the worm 130 under different operating conditions.
[0060] Preferably, the second support portion 154 of the bearing component 150 may be in clearance fit with the tooth top surface 135 of the worm portion 134. When the worm 130 is deformed due to improper operation by the user, the second support portion 154 of the bearing component 150 contacts the tooth top surface 135 of the worm 130 to support the worm 130. The second support portion 154 of the bearing component 150 does not directly contact the meshing surface of the worm 130, avoiding wear on the meshing surface of the worm 130 while the second support portion 154 plays a supporting role, and ensuring the transmission accuracy of the drive device 100.
[0061] Optionally, the driving device 100 further includes a first housing 162, a second housing 164, and a third housing 166. The motor 110 is disposed within the first housing 162, the transmission assembly 120 is disposed within the second housing 164, and the output shaft 140 is disposed within the third housing 166. The first housing 162, the second housing 164, and the third housing 166 are stacked in sequence to together enclose and form an internal space of the driving device 100.
[0062] Preferably, the bearing member 150 may have a first limiting portion 156 and a second limiting portion 158. As Figure 7 shown, the first housing 162 may have a first mating limiting portion 163. As Figure 8 shown, the second housing 164 may have a second mating limiting portion 165. The first limiting portion 156 mates with the first mating limiting portion 163 to fix the bearing member 150 to the first housing 162, and the second limiting portion 158 mates with the second mating limiting portion 165 to fix the bearing member 150 to the second housing 164. For example, the first limiting portion 156 may be a protrusion, the first mating limiting portion 163 may be a recess, and / or the second limiting portion 158 may be a protrusion, the second mating limiting portion 165 may be a recess, and the protrusion is inserted into the corresponding recess. According to the above arrangement, precise positioning of the bearing member 150 is achieved, avoiding being affected by the draft angle of the housing.
[0063] Preferably, the bearing member 150 may be made of an elastic material. When installing the bearing member 150, the bearing member 150 may first be bent within the elastic deformation range, then the axial end 132 of the worm 130 is inserted into the corresponding through hole, and finally the bearing member 150 is released, and the deformed structure of the bearing member 150 naturally recovers to achieve the limiting and supporting effect on the worm 130. In this way, only one bearing member 150 can be used to support the worm 130, and the first supporting portion 152 of the bearing member 150 can be implemented as a complete round hole, making its supporting effect on the axial end 132 of the worm 130 more reliable.
[0064] Preferably, as Figure 2As shown, the transmission assembly 120 may include a first gear 122 mounted to the rotating shaft 112. The worm 130 further has a gear portion 136 located between two axial ends 132, and the gear portion 136 meshes with the first gear 122. In addition, the transmission assembly 120 may further include a second gear 124, a third gear 126, and a fourth gear 128. The worm portion 134 of the worm 130 forms a worm and worm gear engagement with the second gear 124. The third gear 126 meshes with the second gear 124, and the fourth gear 128 meshes with the third gear 126. The fourth gear 128 is connected to the output shaft 140. The power output by the motor 110 is sequentially transmitted to the output shaft 140 via the first gear 122, the worm 130, the second gear 124, the third gear 126, and the fourth gear 128. The transmission assembly 120 realizes a transmission that reduces the rotational speed and increases the torque, providing sufficient torque and appropriate rotational speed for opening or closing the toilet lid.
[0065] In this document, multiple exemplary embodiments of the present disclosure are described in detail with reference to the preferred embodiments. However, those skilled in the art can understand that, without departing from the concept of the present disclosure, various modifications and changes can be made to the above specific embodiments, and various technical features and structures proposed in the present disclosure can also be combined without exceeding the protection scope of the present disclosure. The protection scope of the present disclosure is determined by the appended claims.
Claims
1. A driving device, characterized in that: include: a motor having a rotating shaft; an output shaft configured to output power to the outside of the drive device; a transmission assembly, one end of which is connected to the rotating shaft and the other end of which is connected to the output shaft to transmit the power of the motor to the output shaft, the transmission assembly comprising a worm, the worm being coupled to the rotating shaft; a bearing member disposed at least partially around the radial periphery of the worm, the worm being rotatably connected to the bearing member, wherein the worm has two axial ends and a worm portion between the two axial ends, and the worm portion is connected to a downstream transmission component of the transmission assembly in a worm-wheel meshing manner; And wherein the bearing component includes a first support portion and a second support portion, the first support portion is arranged around the axial end portion, and the second support portion is arranged around the worm portion.
2. The driving device according to claim 1, characterized in that: The first support portion has a through hole, and the axial end portion passes through the through hole; the second support portion has a semicircular cylindrical inner wall, and the cylindrical inner wall is arranged around the worm portion.
3. The driving device according to claim 1, characterized in that: The second supporting portion is clearance-matched with the worm portion.
4. The driving device according to claim 3, characterized in that: The second supporting portion is clearance-matched with the tooth top surface of the worm portion.
5. The driving device according to claim 1, characterized in that: Also includes: a first housing, wherein the motor is disposed in the first housing; a second housing, wherein the transmission assembly is disposed in the second housing; a third housing, wherein the output shaft is disposed in the third housing; The second housing is located between the first housing and the third housing. The first housing, the second housing and the third housing together surround an inner space of the driving device. The bearing component is fixed to the first housing and the second housing.
6. The driving device according to claim 5, characterized in that: The bearing component has a first limiting portion and a second limiting portion, the first shell has a first matching limiting portion, and the second shell has a second matching limiting portion, the first limiting portion cooperates with the first matching limiting portion to fix the bearing component to the first shell, and the second limiting portion cooperates with the second matching limiting portion to fix the bearing component to the second shell.
7. The driving device according to claim 6, characterized in that: The first limiting portion is a protrusion, the first matching limiting portion is a recess, and / or the second limiting portion is a protrusion, the second matching limiting portion is a recess, and the protrusion is inserted into the corresponding recess.
8. The driving device according to any one of claims 1 to 7, characterized in that: The bearing component is made of elastic material.
9. The driving device according to claim 1, characterized in that: The transmission assembly includes a first gear mounted to the rotating shaft, and the worm further includes a gear portion located between the two axial ends, the gear portion meshing with the first gear.
10. The driving device according to claim 9, characterized in that: The transmission assembly also includes a second gear, a third gear and a fourth gear. The worm portion forms a worm and worm wheel engagement with the second gear, the third gear engages with the second gear, the fourth gear engages with the third gear, and the fourth gear is connected to the output shaft. The power output by the motor is transmitted to the output shaft via the first gear, the worm, the second gear, the third gear and the fourth gear in sequence.
11. A toilet unit, characterized in that: include: A drive device according to any one of claims 1 to 10; A toilet seat is rotatably connected to the output shaft.