JP7764643B2 - sexual stimulator - Google Patents

Description

CROSS-REFERENCE TO RELATED APPLICATIONS
This application claims priority to Chinese patent application No. 202420202016.X filed on January 26, 2024, and Chinese patent application No. 202420687877.1 filed on April 3, 2024, the entire contents of which are incorporated herein by reference.

This application relates to the technical field of sex toys, and in particular to sexual stimulation devices.

As people's lives improve, they are pursuing more spiritual needs in addition to material needs. Sexual life is attracting more and more attention as a way to spice up people's lives, and various sex toys have been developed to meet some of the physiological and psychological needs of humans and add pleasure to their sex lives.

Sex toys generally have a massage head and a motor that drives the massage head to perform a linear reciprocating motion, stimulating sensitive areas of the human body, such as the clitoris and vagina, that come into contact with the massage head. However, because such sex toys stimulate the human body by striking the massage head with high frequency, the stimulation range is limited and the stimulation effect is insufficient.

One object of the present application is to provide a sexual stimulation device with an expanded stimulation range and better stimulation effect.

In order to achieve the above object, a sexual stimulation device is provided, the sexual stimulation device comprising a shell portion and a drive mechanism,
the shell portion is configured to be inserted into a human body and includes a massage portion made of a flexible material;
the driving mechanism is provided in the shell and includes a gear box and a driving rod, the driving rod has a first end and a second end opposite to the first end, the first end is connected to the gear box in a transmission manner, and the second end is inserted into the massage portion of the shell;
The second end is inclined relative to the first end, and the massage part is rotatable together with the second end around the first end by being driven by the gearbox.

Compared with the prior art, the present application has the following beneficial effects: The massage unit rotates to form a circular path, thus massaging sensitive areas of the human body. The area of the human body massaged by the massage unit is expanded, and the stimulation effect is improved accordingly. In addition, the massage unit mimics the movement of a human hand to massage the human body, providing a more comfortable user experience.

In order to more clearly describe the technical solutions in the embodiments of the present application, the following will briefly describe the drawings for the description of the embodiments. It is clear that the drawings in the following description are only some embodiments of the present application. Those skilled in the art can obtain other drawings from these drawings without any creative efforts.
1 is a schematic assembly diagram of a sexual stimulation device according to a first embodiment of the present application. FIG. 2 is a cross-sectional view of the sexual stimulation device of FIG. 1. FIG. 3 is an enlarged view of circle III in FIG. 2. 2 is a schematic exploded view of the sexual stimulation device of FIG. 1 with the outer shell removed. FIG. 10 is another exploded view of the drive mechanism of the sexual stimulation device. FIG. 10 is another exploded view of the gearbox of the drive mechanism. 2 is a schematic diagram of the trajectory of the massage part of the sexual stimulation device of FIG. 1. FIG. FIG. 10 is a schematic diagram of the trajectory of the massage portion of another sexual stimulation device. FIG. 2 is a schematic assembly diagram of a sexual stimulation device according to a second embodiment of the present application. FIG. 10 is a cross-sectional view of the sexual stimulation device of FIG. FIG. 10 is a schematic assembly diagram of a sexual stimulation device according to a third embodiment of the present application. FIG. 12 is a cross-sectional view of the sexual stimulation device of FIG.

In order to allow those skilled in the art to better understand the technical solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. In addition to the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present application.

It should be noted that when one component is referred to as "connected" to another component, it can be directly connected to the other component or indirectly connected through one or more intermediate components.

In this specification, the terms "longitudinal," "lateral," "top," "bottom," "inner," "outer," "central," "axial," "radial," "circumferential," and other directions or positional relationships are intended solely to facilitate the description of this application and simplify the description based on the directions or positional relationships shown in the drawings, and do not indicate or imply that the referenced devices or components must be constructed or operated in a particular orientation, and therefore should not be understood as a limitation of this application.

Unless otherwise specified or limited, the specific meanings of all technical and scientific terms used in this specification can be specifically understood by those skilled in the art. The terms used in this specification are used only to describe particular embodiments and are not intended to limit this specification.

Referring to Figures 1 to 5, a sexual stimulation device 100 according to an embodiment of the present application is shown. The sexual stimulation device 100 comprises a shell 10 and a drive mechanism 20 disposed within the shell 10. A massage unit 30 is provided on the shell 10, and the drive mechanism 20 is connected to the massage unit 30 via a transmission system. Due to the action of the drive mechanism 20, the massage unit 30 rotates around a first axis X1, forming a circular locus. Sensitive areas of the human body, such as the clitoris, the female vagina, the rectum, and the male prostate, can be stimulated by the massage unit 30 as long as they are covered by the circular locus of the massage unit 30.

The massage unit 30 serves as a functional part of the sexual stimulation device that acts directly on the human body. It is flexible and may be made of silicone, rubber, etc. The massage unit 30 has a soft feel and can provide a certain cushioning effect, improving comfort during use. The massage unit 30 may also be made of other soft materials that can come into direct contact with the human body, and this is not limited by the present application. Compared to existing sexual stimulation devices that stimulate the human body by striking at high frequencies, the massage unit 30 of this sexual stimulation device rotates to form a circular trajectory, kneading sensitive areas of the human body. The area of the human body massaged by the massage unit 30 is expanded, thereby improving the stimulation effect. Furthermore, the massage unit 30 mimics the movement of a human hand to massage the human body, providing a more comfortable user experience.

5 and 6, the drive mechanism 20 includes a gear box 22 and a drive rod 24. The drive rod 24 has a first end 24a and a second end 24b that face each other. The second end 24b is inclined relative to the first end 24a, defining a first angle β therebetween. Preferably, the first angle β is an obtuse angle. After assembly, the first end 24a of the drive rod 24 is connected to the output shaft 229 of the gear box 22, and the second end 24b of the drive rod 24 is fixedly inserted into the massage unit 30. In this manner, the gear box 22 can rotate the drive rod 24, which in turn can drive the massage unit 30 to rotate about the first axis X1. In this embodiment, the first axis X1 may be the central axis of the first end 24a.

In this embodiment, the massage portion 30 has a substantially spherical or ellipsoidal shape and is generally coaxial with the second end 24b of the drive rod 24. A second angle α is defined between the central axis X2 and the first axis X1 of the massage portion 30. Preferably, the second angle α is an acute angle, and more preferably, the second angle α is less than 45°. The first angle β between the first end 24a and the second end 24b is complementary to the second angle α between the first axis X1 and the central axis X2. That is, the sum of the first angle α and the second angle β is 180°, i.e., α + β = 180°. In this manner, the second angle α between the central axis X2 and the first axis X1 of the massage portion 30 can be determined according to the first angle β between the first end 24a and the second end 24b of the drive rod 24, and therefore the radius of rotation of the massage portion 30 can be determined.

As shown in FIG. 6 , the gearbox 22 includes a motor 221 and a gear unit 223. The motor 221 may be a DC motor and has an output shaft 222 that rotates at high speed. The gear unit 223 includes a gear housing 225 and a plurality of gears 227 installed within the gear housing 225. The gears 227 mesh with each other, and the reduction ratio of the entire gear unit 223 is determined according to the gear ratio between the meshed gears 227. In a specific embodiment, the reduction ratio of the gear unit 223 is greater than or equal to 4:1 and less than or equal to 100:1, and the output speed of the gearbox 22 does not exceed 1000 rpm. That is, the speed of the output shaft 229 of the gearbox 22 does not exceed 1000 rpm, and therefore the speed of the drive rod 24 and/or massage portion 30 does not exceed 1000 rpm.

In certain embodiments, a vibrating component 40, such as a vibration motor, is provided inside the massage unit 30. This vibrating component 40 may be integrally fixed inside the massage unit 30 during the manufacturing process. When the massage unit 30 rotates, it can vibrate at a predetermined frequency together with the vibrating component 40, which not only stimulates sensitive areas of the human body through kneading, but also generates deep stimulation through the vibration. The combination of two different types of stimulation can further excite stimulated areas of the human body, such as genitals like the clitoris and prostate, making the user more likely to reach orgasm with the help of the sexual stimulation device 100, leading to a better sex life and a better sexual experience.

As shown in Figures 1 and 2, the shell 10 is elongated and generally rod-shaped, resembling a male penis. During use, the shell 10, and in particular the massage portion 30 of the shell 10, is inserted into a human genitalia, such as the vagina or rectum. It should be understood that the sexual stimulation device 100 of the present application is not limited to use on the human body. In some embodiments, the sexual stimulation device 100 may be used to stimulate the human chest. Depending on the specific application scenario, the shell 10 can be configured in different shapes to allow the massage portion 30 to easily contact the user's genitalia.

In this embodiment, the front end of the shell portion 10 is bent laterally and its end face is recessed inward to form a bowl-shaped portion 52 centered on a first axis X1, which is generally perpendicular to the longitudinal direction of the shell portion 10. The massage portion 30 is installed in the bowl-shaped portion 52, with one end serving as a connecting end that connects to the center and bottom of the bowl-shaped portion 52 and the other end serving as a free end. The massage portion 30 extends partially beyond the bowl-shaped portion 52 via the open side 53 of the bowl-shaped portion 52. When the massage portion 30 is driven to rotate, it oscillates within the bowl-shaped portion 52 around its connecting end.

The bowl-shaped portion 52 has a double-layer structure, consisting of an outer layer 52a and an inner layer 52b inside the outer layer 52a. The outer layer 52a is made of a soft material, and the massage portion 30 extends outward integrally from the center and bottom of the outer layer 52a. The inner layer 52b is made of a hard material such as plastic or metal, and supports the outer layer 52a and the massage portion 30.

In certain embodiments, the shell 10 may be a dual-layer structure, including a soft outer shell and a hard inner shell, where the inner shell provides support for components mounted inside the shell 10, such as the drive mechanism 20, and the outer shell is integrally formed with and surrounds the inner shell. Note that the inner layer 52b of the bowl 52 may be part of the inner shell, and the outer layer 52a of the bowl 52 may be part of the outer shell.

When the inner shell of the shell portion 10 is assembled with components attached to the shell portion 10, such as the drive mechanism 20, the outer shell and massage portion 30 are integrally formed around the inner shell by overmolding, which not only facilitates manufacturing and assembly but also improves the connection strength between the massage portion 30 and the outer shell. When the massage portion 30 rotates around the first axis X1, it can generate greater deformation without causing damage, further increasing the stimulation force and range of the massage portion 30 on the human body. Furthermore, the outer shell surrounds the inner shell, thereby achieving an excellent sealing effect for the components inside the shell portion 10, thereby providing waterproof and dustproof properties and making the sexual stimulation device 100 easier to clean and store.

It should be understood that the sexual stimulation device 100 of the present application can have the outer shell and the massage portion 30 formed separately and then assembled together, allowing the massage portion 30 to be selectively disassembled and replaced. In practical application, the sexual stimulation device 100 may be formed with several massage portions 30 of different shapes and/or sizes. Depending on the specific usage scenario, the user can select the corresponding massage portion 30 to ensure the desired stimulation effect. In this situation, the outer shell is no longer limited to being formed from the same material as that of the massage portion 30. The outer shell can be formed using not only soft materials such as silicone and rubber, but also hard materials such as plastic and alloy.

As shown in FIG. 3 , the depth of the bowl-shaped portion 52 along the first axis X1 is smaller than the height of the massage portion 30, allowing the massage portion 30 to extend partially beyond the bowl-shaped portion 52 through the open side 53, making it easier to contact the human body. The vibration element 40 is fixed to the portion of the massage portion 30 that extends beyond the bowl-shaped portion 52, allowing the vibration element 40 to be closer to the human body. The central axis X2 of the massage portion 30 is coaxial with or parallel to the central axis of the second end 24b, and the central axis of the bowl-shaped portion 52 is coaxial with or parallel to the central axis of the first end 24a. Therefore, the massage portion 30 is positioned eccentrically relative to the bowl-shaped portion 52, facilitating rocking of the bowl-shaped portion 52 inside the massage portion 30. During rocking, the center of the massage portion 30 is adjacent to the inner edge of the open side 53 of the bowl-shaped portion 52.

Driven by the gearbox 22, the drive rod 24 rotates the massage unit 30 around the first axis X1 at an appropriate speed not exceeding 1000 rpm. The first end 24a of the drive rod 24 rotates around its central axis, i.e., the first axis X1. The second end 24b and the massage unit 30 connected to the second end 24b rotate around the first axis X1/first end 24a. The path of the massage unit 30 around the first axis X1 is approximately circular, and the massage unit 30 can massage sensitive areas of the human body covered by this circular path, thereby expanding the stimulation area and improving the stimulation effect.

As shown in FIG. 7, on a plane perpendicular to the first axis X1, the orthogonal projection of the massage portion 30 is approximately a circle with a radius of R1, and the orthogonal projection of the open side 53 of the bowl-shaped portion 52 is approximately a circle with a radius of R2, where the centers of the two projected circles are spaced a certain distance apart. While the massage portion 30 rotates around the first axis X1, the bowl-shaped portion 52 can support the rotation of the massage portion 30 and limit the rotation trajectory of the massage portion 30. In this application, the massage portion 30 rotates around the first axis X1, and its trajectory is approximately a circle with a radius of R3, where R3 is greater than R1, i.e., R3 > R1.

In existing devices, the human body is generally stimulated by high-frequency strikes. Using the same massage unit 30, the stimulation area of the existing device is approximately a circle with a radius of R1, while the stimulation area of the present device is approximately a circle with a radius of R3. Therefore, by changing the movement of the massage unit 30, the stimulation area on the human body can be expanded without changing the size of the massage unit 30, resulting in a better stimulation effect. It should be understood that depending on the genitals to be stimulated, the massage unit 30 may have a different size and/or the massage unit 30 may be deflected at a different angle relative to the bowl-shaped portion 52, further improving the stimulation area of the massage unit 30 on the human body.

In one embodiment, as shown in FIG. 8, the second angle α between the central axis X2 of the massage unit 30 and the first axis X1 increases, while the sizes of the bowl-shaped portion 52 and the massage unit 30 remain unchanged. The distance between the center of the orthogonal projection of the massage unit 30 on a plane perpendicular to the first axis X1 and the first axis X1 increases. That is, the radius of rotation of the massage unit 30 increases to R4. Thus, the trajectory of the massage unit 30 is approximately a circle with radius R4, where R4 is greater than R3, i.e., R4 > R3. Due to the squared relationship between area and radius, slightly increasing the radius of rotation of the massage unit 30 can significantly increase the stimulation range and further enhance the stimulation effect.

In actual use, the stimulated portion of the human body may experience a slight depression due to the action of the massage portion 30. Correspondingly, a portion of the human body surrounding the stimulated portion may protrude due to the depression of the stimulated portion. The cup-shaped portion 52 further provides support and enclosure for the surrounding portion of the stimulated portion. The massage portion 30 protrudes outward relative to the cup-shaped portion 52, allowing it to maintain contact with the depressed stimulated portion, further enhancing the stimulation effect. In some embodiments, the depth H of the cup-shaped portion 52 is 5 mm to 10 mm, and may be 6.5 mm, 7.8 mm, etc. The diameter D of the open side 53 of the bowl-shaped portion 52 is 20 mm to 50 mm, and may be 32 mm, 45 mm, etc. The height L of the massage portion 30 extending beyond the open side 53 of the bowl-shaped portion 52 is less than 50 mm, and may be 18.5 mm, 35 mm, etc.

In this embodiment, a drive wheel 26 is attached around the second end 24b of the drive rod 24. The drive wheel 26 is generally flat and annular, and has a larger radial size than the drive rod 24, allowing it to better drive and rotate the massage unit 30. During manufacturing, the drive rod 24 and drive wheel 26 may be pre-assembled and placed in a mold, after which the massage unit 30 is overmolded. Alternatively, the drive wheel 26 may be integrally fixed inside the massage unit 30, effectively improving the connection stability between them. The massage unit 30, particularly its end connected to the bowl-shaped portion 52, may have a clearance fit with the drive rod 24, allowing sufficient deformation when the massage unit 30 rotates with the drive rod 24, thereby smoothing the rotation of the massage unit 30.

Preferably, the drive wheel 26 has a neck portion 27, and the drive wheel 26 has its smallest inner diameter at the neck portion 27. The second end 24b of the drive rod 24 extends through the neck portion 27 and forms two protrusions 25 on each of two opposing axial sides of the neck portion 27. The outer diameter of the protrusions 25 is larger than the inner diameter of the neck portion 27. After assembly, the protrusions 25 act as position limiting components for the neck portion 27, preventing the drive wheel 26 from coming off the drive rod 24 without external force and facilitating the formation and manufacturing of the outer shell and massage portion 30 in subsequent processes. Of course, the drive wheel 26 and drive rod 24 can also be fixed by other means, such as an interference fit, which is not limited to this application.

In this embodiment, the massage unit 30 is provided at the front end of the shell unit 10, and the drive mechanism 20 is installed adjacent to the front end of the shell unit 10, facilitating connection between the drive mechanism 20 and the massage unit 30. To facilitate the placement of the gearbox 22, the drive mechanism 20 further includes a steering unit 28 installed between the gearbox 22 and the drive rod 24. In the illustrated embodiment, the steering unit 28 is a steering gear unit and includes a first gear 28a and a second gear 28b that mesh with each other. The first gear 28a is mounted around the output shaft 229 of the gearbox 22, and the second gear 28b is mounted around the first end 24a of the drive rod 24, achieving power transmission between the gearbox 22 and the drive rod 24.

In this embodiment, both the first gear 28a and the second gear 28b are bevel gears, which allows for power transmission while changing the direction of power transmission. Therefore, the extension direction of the output shaft 229 of the gearbox 22 can be made different from the extension direction of the first end 24a and the second end 24b of the drive rod 24. Specifically, the output shaft 229 may be perpendicular to the first end 24a and inclined relative to the second end 24b. In other embodiments, depending on the space within the shell 10, the gearbox 22 may be positioned at other locations, including the rear end of the shell 10.

In some embodiments, the gearbox 22 may be directly connected to the drive rod 24, omitting the steering unit 28. In this case, the output shaft 229 of the gearbox 22 may extend outward from the side of the gear housing 225, and may be inclined or perpendicular to the output shaft 222 of the motor 221. In this situation, the gear 227 inside the gear housing 225 may include a bevel gear or the like, and the gearbox 22 itself may achieve power transmission and change of power transmission direction.

In this embodiment, the inner shell of the shell portion 10 forms a support frame 12 at a position corresponding to the drive mechanism 20. The support frame 12 is used to support the gear box 22, drive rod 24, etc. In the illustrated embodiment, the support frame 12 is composed of two parts connected by a snap fit, and a space for accommodating the drive mechanism 20 is formed between the two parts of the support frame 12. The first end 24a of the drive rod 24 may be rotatably inserted into a shaft seat 14 formed in the support frame 12. Preferably, a bearing 16 is provided in the shaft seat 14. The second end 24b of the drive rod 24 extends beyond the support frame 12 and is inserted into the massage portion 30. During manufacturing, the support frame 12 is first assembled with the drive mechanism 20, and then the outer shell and massage portion 30 are overmolded to integrally fix the drive mechanism 20 and support frame 12 to the outer shell.

In this embodiment, the rear end of the shell 10 functions as the handle of the sexual stimulation device 100, and the handle is provided with multiple buttons 54, such as switch keys and function keys. A control device such as a control circuit board 56 is provided on the handle of the shell 10. The buttons 54 form a control circuit with the gear box 22, vibration motor 40, etc. via the control circuit board 56. Through the buttons 54, the user can control the operation of the sexual stimulation device 100, such as adjusting the speed and rotation direction of the gear box 22 and adjusting the vibration frequency of the vibration motor 40. A battery 58, such as a rechargeable battery, is provided in the handle of the shell 10, is electrically connected to the control circuit board 56, and functions as the power source for the entire sexual stimulation device 100.

While using the sexual stimulation device 100, the user can select different modes as needed via the button 54 on the handle. For example, the user can achieve a certain stimulation effect through vibration by starting only the vibration motor 40 to drive the massage unit 30 to perform high-frequency vibrations. Alternatively, the user can start only the gearbox 22 to drive the massage unit 30 to rotate, creating a kneading stimulation effect for the human body. Alternatively, the user can start the vibration motor 40 and gearbox 22 simultaneously to vibrate and rotate the massage unit 30, creating a dual stimulation effect for the human body, which is convenient to use and has a good stimulation effect.

9 and 10 show another embodiment of the sexual stimulation device of the present application, which differs from the previous embodiment mainly in the massage portion. In this embodiment, the shell portion 10 of the sexual stimulation device 100 is generally elongated and rod-shaped. The branch 18 extends from the rear end of the shell portion 10 in a curved manner toward the upper center of the shell portion 10, and the tip of the branch 18 is concave inward to form a bowl-shaped portion 52. The massage portion 30 is placed within the bowl-shaped portion 52 and extends partially beyond the bowl-shaped portion 52 through its open side 53. In this embodiment, the open side 53 of the bowl-shaped portion 52 is inclined at a certain angle relative to the center of the shell portion 10, and the massage portion 30 extending beyond the bowl-shaped portion 52 is closer to the center of the shell portion 10.

The shell 10 is provided with a drive mechanism 20 comprising a gearbox 22 and a drive rod 24. The drive rod 24 has a first end 24a and a second end 24b opposite the first end 24a. The first end 24a is connected to the gearbox 22, and the second end 24b is inserted into the massage unit 30. Due to the action of the gearbox 22, the massage unit 30 rotates around the first end 24a together with the second end 24b, forming a circular trajectory and generating a massage effect on the human body. Similarly, the massage unit 30 is equipped with a vibration component 40 such as a vibration motor, allowing the massage unit 30 to generate dual stimulation to the human body.

In this embodiment, the front end of the shell 10 forms the massage end 32, within which another vibrating component 42, such as a vibration motor, is provided. The rear end of the shell 10 functions as a handle for holding the sexual stimulation device 100. The handle is equipped with a button 54 for controlling the operation of the gearbox 22, vibrating components 40, 42, etc. During use of the sexual stimulation device 100, the massage end 30 and the massage end 32 act on two different parts of the human body, further enhancing the stimulation effect. For example, the massage end 32 may be used to stimulate the vagina, and the massage end 30 may be used to stimulate the clitoris. As another example, the massage end 32 may be used to stimulate the rectum, and the massage end 30 may be used to stimulate the prostate.

Figures 11 and 12 show another embodiment of the sexual stimulation device of the present application, which differs from the previous embodiment mainly in the massage portion. In this embodiment, the shell portion 10 of the sexual stimulation device 100 is generally elongated and rod-shaped. The central portion of the shell is concave inward and laterally to form a bowl-shaped portion 52. The massage portion 30 is placed within the bowl-shaped portion 52 and extends partially beyond the bowl-shaped portion 52 through its open side 53. Preferably, protrusions 34 are provided on the outer surface of the massage portion 30 to enhance the stimulating effect of the massage portion 30.

The shell 10 is provided with a drive mechanism 20 comprising a gear box 22 and a drive rod 24. The drive rod 24 has a first end 24a and a second end 24b opposite the first end 24a. The first end 24a is connected to the gear box 22, and the second end 24b is connected to the massage part 30. Due to the action of the gear box 22, the massage part 30 rotates around the first end 24a together with the second end 24b, forming a circular trajectory and producing a kneading effect on the human body.

In this embodiment, the front end of the shell 10 forms the massage end 32, which contains a vibrating component 42, such as a vibration motor. The branch 18 curves and extends from the rear end of the shell 10 toward the upper center of the shell 10, and contains another vibrating component 44, such as another vibration motor. The rear end of the shell 10 functions as a handle for holding the sexual stimulation device 100. The handle is equipped with a button 54 for controlling the operation of the gearbox 22, the vibrating components 42, 44, and the like. When this sexual stimulation device is in use, the massage end 30, massage end 32, and branch 18 can each act on three different parts of the human body. For example, the massage end 32 can be used to stimulate the vagina, the massage end 30 can be used to stimulate the clitoral crus, and the branch 18 can be used to stimulate the clitoral glans to further enhance the stimulation effect.

Finally, it should be noted that the above describes only preferred embodiments of the present application, and is not intended to define the scope of the present application. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art will recognize that the technical aspects described in the above embodiments may be modified, or some technical features may be replaced with equivalents. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should fall within the scope of the present application.

Claims (13)

A sexual stimulation device comprising: a shell portion; and a drive mechanism;
the shell portion is configured to be inserted into a human body during use and includes a massaging portion made of a flexible material, the shell portion including a soft outer shell and a hard inner shell, the outer shell and the massaging portion being integrally formed around the inner shell;
the driving mechanism is provided in the shell and includes a gear box and a driving rod, the driving rod has a first end and a second end opposite to the first end, the first end is connected to the gear box in a transmission manner, and the second end is inserted into the massage part of the shell, the gear box includes a motor and a gear unit connected between the motor and the first end of the driving rod, the gear unit includes a plurality of gears that mesh with each other to achieve a speed reduction effect;
The second end of the drive rod is inclined relative to the first end, and the massage part is rotatable together with the second end of the drive rod around the first end by being driven by the gearbox, and the massage part rotates around a first axis to form a circular locus;
a drive wheel is attached around the second end of the drive rod, the drive wheel is essentially annular, has a radial size larger than that of the drive rod, and is integrally fixed inside the massage part ; the second end of the drive rod and the corresponding mounting part of the massage part are loosely fitted together, and the second end can rotate relative to the massage part;
a massaging portion having a substantially spherical or ellipsoidal shape, a shell portion concave inward to form a bowl-shaped portion, the massaging portion being integrally connected to the central bottom of the bowl-shaped portion and partially extending beyond the bowl-shaped portion, a diameter of a base portion where the massaging portion and the bowl-shaped portion are connected being smaller than a diameter of a portion of the massaging portion protruding from the bowl-shaped portion, and a maximum width of the bowl-shaped portion being larger than a maximum diameter of the spherical massaging portion . The sexual stimulation device of claim 1, wherein a vibrating member is provided inside the massage portion and rotates together with the second end of the drive rod around the first end. The sexual stimulation device of claim 1, wherein the massage portion and the second end of the drive rod rotate about the first end at a speed not exceeding 1000 rpm. The sexual stimulation device of claim 3, wherein the gear unit has a reduction ratio of 4:1 to 100:1. The sexual stimulation device of claim 4, wherein the output shaft of the gearbox is inclined or perpendicular to the output shaft of the motor, the interior of the gearbox includes a bevel gear, and the gearbox itself can achieve power transmission and change the direction of power transmission. The sexual stimulation device of claim 4, wherein the drive mechanism further includes a steering unit connected between the gear unit of the gearbox and the first end of the drive rod, and the output shaft of the gearbox is inclined or perpendicular to the first end of the drive rod. The sexual stimulation device of claim 4, wherein the second end of the drive rod is inclined relative to the first end of the drive rod and the output shaft of the gearbox. The sexual stimulation device of claim 1, wherein the central axis of the first end of the drive rod is inclined relative to the central axis of the massage portion. The sexual stimulation device of claim 1, wherein the central axis of the massage portion is essentially coaxial with the central axis of the second end of the drive rod. 2. The sexual stimulation device according to claim 1, wherein the bowl-shaped portion comprises an inner layer and an outer layer covering the inner layer, the hardness of the inner layer is greater than the hardness of the outer layer, and the massage portion is integrally connected to the outer layer of the bowl-shaped portion. The sexual stimulation device of claim 1, characterized in that the shell portion is elongated and includes a front end, a rear end, and a central portion between the front and rear ends, the rear end of the shell portion functions as a handle for holding the sexual stimulation device, the massage portion is provided at the front end of the shell portion, and a vibration motor is provided inside the massage portion. The sexual stimulation device of claim 1, wherein the shell portion is elongated and includes a front end, a rear end, and a central portion between the front and rear ends, the rear end of the shell portion functions as a handle for holding the sexual stimulation device, the massage portion is provided in the central portion of the shell portion, and a vibration motor is provided inside the front end of the shell portion. The sexual stimulation device of claim 1, wherein the shell portion is elongated and includes a front end, a rear end, and a central portion between the front and rear ends, the rear end of the shell portion functions as a handle for holding the sexual stimulation device, a branch portion extends from the rear end of the shell portion in a curved manner above the central portion of the shell portion, the massage portion is provided at the tip of the branch portion, a vibration motor is provided inside the massage portion, and another vibration motor is provided at the front end of the shell portion.