Cover opening and closing mechanism and intelligent closestool using same

Abstract

The utility model discloses a cover opening and closing mechanism and an intelligent closestool using the same. The cover opening and closing mechanism comprises a shell, an output shaft partially arranged in the shell and a torsional spring used in cooperation with the output shaft. The output shaft body is suitable for achieving switching of the opening state and the closing state of the cover body through rotating motion of the output shaft body, and the rotating motion of the output shaft body is further suitable for compressing or releasing the torsional spring. When the cover body is in a completely closed state relative to the seat body through the rotary motion of the output shaft body, the torsion spring is in a first deformation state; when the cover body is opened to an angle A relative to the seat body through the rotary motion of the output shaft body, the torsion spring is in a natural state, and the range of A is 60-120 degrees; when the cover body is opened to an angle B relative to the seat body through the rotating motion of the output shaft body, the torsion spring is in a second deformation state, and the range of B is 92-125 degrees; the deformation trend of the second deformation state is opposite to that of the first deformation state. The torsion stability of the torsion spring in a long-term use state can be improved.

Description

Technical Field

[0001] The utility model relates to the field of intelligent toilets, in particular to an opening and closing cover mechanism and an intelligent toilet using the same. Background Art

[0002] The use of a smart toilet is inseparable from its toilet lid that can open and close automatically. For this, an automatic opening and closing lid device is needed to realize the automatic opening and closing of the toilet lid.

[0003] Specifically, in combination with the automatic opening and closing cover device commonly used in the prior art, its general principle is to realize the opening and closing of the toilet cover through the cooperation of the motor, the reduction gear set, the output shaft and the torsion spring provided on the output shaft. When the automatic opening and closing cover device closes the toilet seat or toilet cover, it will compress the torsion spring to store force. When the toilet seat or toilet cover is opened, the torsion spring will gradually release the torque and play a power assist role.

[0004] In this regard, announcement number CN204813678U discloses a rotating flip cover device and toilet cover, wherein when the cover is at the maximum open position relative to the base, the torsion spring is in a natural state; when the cover is in the closed state, the torsion spring is in an open state. During the process of the cover moving from the open state to the closed state, the torsion spring stretches and accumulates force. When the cover is fully opened, the torsion spring is in a natural state and is not subjected to force. Based on the torsion spring in this case, actual research and use have found that it has the following problems:

[0005] The torsion spring is mainly used to assist in opening the lid. It has a single function and is prone to plastic deformation after long-term use. The maximum torque is reduced, that is, the torsion spring cannot maintain the torsion stability under long-term use, resulting in a decrease in the output torque of the flip mechanism.

[0006] Therefore, in view of some problems existing in the torsion spring generally used in the automatic opening and closing cover device of the smart toilet in the prior art, it is necessary to further optimize its structure so as to improve the torsional stability of the torsion spring under long-term use. Utility Model Content

[0007] The first object of the utility model is to provide an opening and closing cover mechanism to solve the technical problem of improving the torsional stability of a torsion spring under long-term use.

[0008] The second purpose of the present utility model is to provide an intelligent toilet to solve the technical problem of optimizing the torsional stability of the torsion spring in the opening and closing cover mechanism adopted by the intelligent toilet under long-term use.

[0009] The opening and closing cover mechanism of the present invention is realized as follows:

[0010] A cover opening and closing mechanism is suitable for a cover body and a base body that can be opened and closed relative to each other, comprising: a shell, an output shaft body partially arranged in the shell, and a torsion spring used in conjunction with the output shaft body; wherein

[0011] The output shaft is suitable for switching the cover body relative to the base body in an open or closed state through its rotational movement, and the rotational movement of the output shaft is also suitable for compressing or releasing the torsion spring; the output shaft is provided with a connecting portion for abutting and cooperating with one axial side end of the torsion spring; the torsion spring is connected to the connecting portion via a second clamping joint extending along its axial direction; the connecting portion is provided with a second locking groove adapted for the second clamping joint; and the second locking groove is an arc-shaped groove distributed along the circumferential direction of the output shaft, and the central angle corresponding to the arc-shaped groove ranges from 30° to 60°;

[0012] When the cover body is in a completely closed state relative to the base body due to the rotational movement of the output shaft body, the torsion spring is in a first deformation state;

[0013] When the cover is opened to an angle A relative to the base by the rotation of the output shaft, the torsion spring is in a natural state. The range of A is: 60° to 120°;

[0014] When the cover is opened relative to the base to an angle B by the rotation of the output shaft, the torsion spring is in a second deformation state, and the range of B is: 92° to 125°;

[0015] The second deformation state has a deformation trend opposite to that of the first deformation state.

[0016] In an optional implementation of the present invention, the first deformation state is a compression state, and the second deformation state is an extension state.

[0017] In an optional embodiment of the present invention, the housing is provided with an axial limiting portion for abutting and cooperating with the other axial side end of the torsion spring;

[0018] 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.

[0019] In an optional implementation of the present invention, the axial limiting portion is further provided with a first locking groove adapted to the first locking joint.

[0020] In an optional embodiment of the present invention, assuming that when the torsion spring is in a natural state, the center angle formed by the first clamping joint and the second clamping joint relative to the axis of the torsion spring is α, and when the torsion spring is in a compressed state, the center angle formed by the first clamping joint and the second clamping joint relative to the axis of the torsion spring is δ; then

[0021] δ>α, and δ-α=β, 60°≤β≤120°.

[0022] In an optional embodiment of the present invention, when the torsion spring is in an extended state, the center angle formed by the first clamping joint and the second clamping joint relative to the axis of the torsion spring is θ; then

[0023] α>θ, and α-θ=γ, 0°<γ≤33°.

[0024] In an optional implementation of the present invention, the connecting portion is a partial structure of the output shaft body.

[0025] In an optional implementation of the present invention, the connecting portion is an output gear assembled on the output shaft body and used for driving the output shaft body to rotate.

[0026] In an optional implementation of the present invention, the first deformation state is an extended state, and the second deformation state is a compressed state.

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

[0028] A smart toilet comprises the aforementioned opening and closing cover mechanism.

[0029] By adopting the above technical solution, the present invention has the following beneficial effects: the opening and closing lid mechanism of the present invention and the smart toilet using the same have three opening and closing states of the lid relative to the seat, and the corresponding torsion spring also produces three different states. Compared with the torsion spring in the prior art that only has two states, the problem of plastic deformation can be avoided, thereby facilitating the improvement of the torsion stability of the torsion spring under long-term use. Moreover, under this structure, the torsion spring not only provides assistance during the opening of the lid relative to the seat, but also provides a torsion force in the opposite direction of the opening direction when the lid is opened to the extreme opening position at the maximum angle relative to the seat, so as to cushion the rigid impact when the lid is opened to the extreme opening position, thereby improving the safety and softness of the lid opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the internal structure of the opening and closing cover mechanism of the present invention;

[0031] Figure 2 This is a partial structural diagram of the opening and closing cover mechanism of the utility model;

[0032] Figure 3 This is a schematic structural diagram of the torsion spring of the cover opening and closing mechanism of the present invention;

[0033] Figure 4 This is a schematic structural diagram of the output gear of the cover opening and closing mechanism of the present invention;

[0034] Figure 5 It is a partial structural diagram of the housing of the opening and closing cover mechanism of the present invention;

[0035] Figure 6 This is a schematic diagram of the coordination structure between the torsion spring and the housing of the opening and closing cover mechanism of the present invention from a first perspective;

[0036] Figure 7 This is a schematic diagram of the coordination structure between the torsion spring and the housing of the opening and closing cover mechanism of the present invention from a second perspective;

[0037] Figure 8 This is a structural diagram of the torsion spring of the opening and closing cover mechanism of the present invention in a compressed state;

[0038] Figure 9 This is a structural diagram of the torsion spring of the opening and closing cover mechanism of the present invention in a natural state;

[0039] Figure 10 This is a structural diagram of the torsion spring of the opening and closing cover mechanism of the utility model in an extended state.

[0040] In the figure: housing 1, motor 2, gear transmission system 3, output shaft 4, torsion spring 5, first clamping joint 51, second clamping joint 52, output gear 9, second locking groove 91, axial limiting portion 10, first locking groove 101. DETAILED DESCRIPTION

[0041] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0042] Example 1:

[0043] See also Figures 1 to 10 As shown, this embodiment provides an opening and closing cover mechanism suitable for an openable and closable cover. The cover is assembled on a base, thereby realizing the opening and closing of the cover relative to the base through the opening and closing cover mechanism. The opening and closing cover mechanism used in this embodiment includes: a housing 1, an output shaft 4 partially disposed within the housing 1, and a torsion spring 5 used in conjunction with the output shaft 4.

[0044] The output shaft 4 partially extends out of the shell 1, so that the output shaft 4 can realize the switching of the opening and closing state of the cover relative to the base through its rotational movement, and the rotational movement of the output shaft 4 can also compress or release the torsion spring 5.

[0045] Here, for the rotational movement of the output shaft 4, it is configured with a driving component for driving the rotation. The driving component can be a motor 2 combined with a gear transmission system 3. This embodiment does not make an absolute limitation on this, and it can optionally adopt a driving component with an opening and closing cover structure in any mature means in the existing technology.

[0046] More specifically, the assembly structure between the torsion spring 5, the output shaft 4, and the housing 1 of this embodiment is as follows:

[0047] Roughly speaking, a connecting portion is provided on the output shaft body 4 for abutting and cooperating with one axial side end of the torsion spring 5; and an axial limiting portion is provided in the housing 1 for abutting and cooperating with the other axial side end of the torsion spring 5; the torsion spring 5 is connected to the axial limiting portion through a first clamping joint 51 extending radially along its inner diameter hole; the torsion spring 5 is connected to the connecting portion through a second clamping joint 52 extending axially along its inner diameter hole.

[0048] In addition to the above structure, the axial limiting portion further comprises a first locking groove 101 adapted for the first locking joint 51, and the connecting portion further comprises a second locking groove 91 adapted for the second locking joint 52. The second locking groove 91 is an arc-shaped groove distributed along the circumference of the output shaft 4, and the corresponding central angle of the arc-shaped groove ranges from 30° to 60°.

[0049] Next, it is necessary to explain the connection portion involved in this embodiment. In one optional implementation, the connection portion is a portion of the output shaft body 4. In this case, the connection portion can be integrally formed on the output shaft body 4. In another optional implementation, the connection portion is an output gear 9 assembled on the output shaft body 4 to drive the output shaft body 4 to rotate. Both of the above different situations theoretically meet the requirements of this embodiment. This embodiment, combined with the accompanying drawings, only uses the case where the connection portion is an output gear 9 as an example for description.

[0050] Based on the above, it should be noted that when the cover is fully closed relative to the base due to the rotational movement of the output shaft 4, the torsion spring 5 is in a first deformed state; when the cover is opened to an angle A relative to the base due to the rotational movement of the output shaft 4, the torsion spring 5 is in a natural state, with A ranging from 60° to 120°; when the cover is opened to an angle B relative to the base due to the rotational movement of the output shaft 4, the torsion spring 5 is in a second deformed state, with B ranging from 92° to 125°. At this point, the cover is at its maximum open position relative to the base, and the deformation trend of the second deformed state is opposite to that of the first deformed state. Based on this structure, when the cover is opened to an angle exceeding 90 degrees relative to the base, the cover will not automatically fall back under the action of gravity. At this time, the torsion spring 5 will deform to form a buffer to keep the cover open relative to the base, and can intervene and play a role.

[0051] In summary, for the opening and closing cover mechanism of this embodiment, the opening and closing states of the cover body relative to the base body include three states, and the corresponding torsion spring 5 also produces three different states. Compared with the torsion spring 5 in the prior art that only has two states, the problem of plastic deformation can be avoided, which is beneficial to improving the torsional stability of the torsion spring 5 under long-term use.

[0052] Example 2:

[0053] See also Figures 1 to 10 As shown, based on the opening and closing cover mechanism of embodiment 1, this embodiment takes an example with reference to the accompanying drawings, in which the first deformation state is a compression state, and the second deformation state is an extension state.

[0054] In this case, see more details. Figure 9 As shown, when the torsion spring 5 is in the natural state, the cover is opened to an angle A relative to the base, and the range of A is: 60°~120°. The angle formed by the center of the circle between the first clamping joint 51 and the second clamping joint 52 relative to the axis of the torsion spring 5 is α. Figure 8 As shown, when the cover is gradually closed relative to the base until the cover is in a completely closed state relative to the base, the closing angle of the cover relative to the base is also A, and as the cover is closed relative to the base, the torsion spring 5 enters a compressed state, and the center angle formed by the first clamping joint 51 and the second clamping joint 52 relative to the axis of the torsion spring 5 is δ; then δ>α, and δ-α=β, 60°≤β≤120°, in this case, the torsion spring 5 enters an energy storage state due to compression deformation, and can provide assistance in the process of opening the cover relative to the base, assisting in opening the cover, and the compression amount of the torsion spring 5 within this angle range will not be too large (too large will easily reduce fatigue life), and ensure that the torsion spring 5 can recover to a free state within 120° as the output shaft 4 rotates, thereby avoiding the problem of long-term compression without recovery causing plastic deformation of the torsion spring 5 and reducing the elastic coefficient.

[0055] See Figure 10 As shown, when the cover is opened relative to the base to an angle B (92° to 125°) through the rotation of the output shaft 4, and the torsion spring 5 is now in its extended state, the angle θ formed by the first and second clamping joints 51 and 52 relative to the axis of the torsion spring 5 is such that α>θ, and α-θ=γ, where 0°<γ≤33°. Specifically, at this point, as the cover opens relative to the base from 92° to 125°, an angle difference of 33° occurs, resulting in a maximum angle γ of 33°.

[0056] Regarding the lid opening and closing mechanism of this embodiment, an optional embodiment is illustrated in conjunction with the accompanying drawings. The connecting portion is the output gear 9, and the second locking groove 91 is an arcuate groove designed along the circumference of the output gear 9. In this configuration, when the lid is fully closed due to the rotation of the output shaft 4, the second locking joint 52 is located at one end of the arcuate groove. When the lid is opened to angles A and B relative to the closed state due to the rotation of the output shaft 4, the second locking joint 52 is located at the other end of the arcuate groove.

[0057] More specifically, regarding the opening process of the cover relative to the base in this embodiment:

[0058] When the cover is opened to an angle A relative to the closed state by the rotation of the output shaft 4, the opening angle of the cover relative to the base is the rated opening angle (usually 120 degrees), and the torsion spring 5 should return to its natural state. Figure 9 That is, the torsion spring 5 should not be compressed in the rated cover-opening state, thereby avoiding plastic deformation caused by long-term compression.

[0059] When the cover is opened to an angle B relative to the closed state by the rotation of the output shaft 4, Figure 10 As shown, the opening angle of the lid relative to the base at this time is the maximum opening angle (i.e., the limit opening position), and the torsion spring 5 is driven by the second locking groove 91 to extend by an angle of γ. When the lid is opened to the limit position relative to the base, a rigid limit structure should be provided (combining with the mature means of the prior art, this rigid limit structure can be achieved by the meshing relationship between the transmission gear system in the drive assembly and the output gear 9 on the output shaft 4), which is used to maintain the lid at the limit opening position and prevent further opening. To prevent the cumulative transmission error from causing the lid opening angle to fail to reach the rated angle, the limit opening angle is usually set approximately 5° higher than the rated opening angle. In this case, when the torsion spring 5 is extended, it will generate an elastic force in the closing direction of the lid relative to the base. This elastic force can reduce or offset the opening force when the output shaft 4 opens from the rated opening position to the limit opening position, thereby reducing the impact of the output gear 9 on the rigid limit structure and playing a buffering and protective role.

[0060] Example 3:

[0061] Based on the lid opening and closing mechanism of Example 1, the first deformation state of this embodiment is an extended state, and the second deformation state is a compressed state. It should be noted that compared to Example 2, this embodiment merely reverses the first and second deformation states. The other implementation principles can refer to Example 2, so the specific principles will not be elaborated here or absolutely limited.

[0062] Example 4:

[0063] Based on the opening and closing cover mechanism of embodiment 1, embodiment 2 or embodiment 3, this embodiment provides a smart toilet, including: the opening and closing cover mechanism of embodiment 1, embodiment 2 or embodiment 3. The smart toilet includes a seat and a cover that can be opened and closed relative to the seat.

[0064] In the smart toilet with this structure, the torsion spring 5 not only provides assistance when the cover is opened relative to the seat, but also provides a torque opposite to the opening direction when the cover is opened to the extreme opening position of the maximum angle relative to the seat, so as to cushion the rigid impact when the cover is opened to the extreme opening position, thereby improving the safety and softness of opening the cover.

[0065] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0066] In the description of the present invention, it should be understood that the terms indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0067] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0068] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0069] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0070] In the present invention, unless otherwise expressly specified or limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

Claims

1. A cover opening and closing mechanism, suitable for a cover body and a base body that can be opened and closed relative to each other, characterized in that: include: A housing, an output shaft partially disposed within the housing, and a torsion spring used in conjunction with the output shaft; in The output shaft is suitable for switching the cover body relative to the base body in an open or closed state through its rotational movement, and the rotational movement of the output shaft is also suitable for compressing or releasing the torsion spring; the output shaft is provided with a connecting portion for abutting and cooperating with one axial side end of the torsion spring; the torsion spring is connected to the connecting portion via a second clamping joint extending along its axial direction; the connecting portion is provided with a second locking groove adapted for the second clamping joint; and the second locking groove is an arc-shaped groove distributed along the circumferential direction of the output shaft, and the central angle corresponding to the arc-shaped groove ranges from 30° to 60°; When the cover body is in a completely closed state relative to the base body due to the rotational movement of the output shaft body, the torsion spring is in a first deformation state; When the cover is opened to an angle A relative to the base by the rotation of the output shaft, the torsion spring is in a natural state. The range of A is: 60° to 120°; When the cover body is opened to an angle B relative to the seat body through the rotational movement of the output shaft body, the torsion spring is in a second deformation state, and the range of B is: 92°~125°; the deformation trend of the second deformation state is opposite to that of the first deformation state.

2. The cover opening and closing mechanism according to claim 1, characterized in that: The first deformed state is a compressed state, and the second deformed state is an extended state.

3. The cover opening and closing mechanism according to claim 2, characterized in that: The housing is provided with an axial limiting portion for abutting and cooperating with the other axial side end of the torsion spring; 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.

4. The cover opening and closing mechanism according to claim 3, characterized in that: The axial limiting portion is further provided with a first locking groove adapted to the first locking joint.

5. The cover opening and closing mechanism according to claim 3, characterized in that: Assume that when the torsion spring is in a natural state, the center angle formed by the first and second clamping joints relative to the axis of the torsion spring is α, and when the torsion spring is in a compressed state, the center angle formed by the first and second clamping joints relative to the axis of the torsion spring is δ; then δ>α, and δ-α=β, 60°≤β≤120°.

6. The cover opening and closing mechanism according to claim 5, characterized in that: When the torsion spring is in the extended state, the angle formed by the first clamping joint and the second clamping joint relative to the axis of the torsion spring is θ; then α>θ, and α-θ=γ, 0°<γ≤33°.

7. The cover opening and closing mechanism according to any one of claims 3 to 6, characterized in that: The connecting portion is a structural part of the output shaft.

8. The cover opening and closing mechanism according to any one of claims 3 to 6, 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.

9. The cover opening and closing mechanism according to claim 1, wherein: The first deformed state is an extended state, and the second deformed state is a compressed state.

10. A smart toilet, characterized in that: include: The cover opening and closing mechanism according to any one of claims 1 to 9.

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