Stimulation device

Abstract

An embodiment of the present disclosure discloses a stimulation device. The stimulation device includes a pressure generator including a chamber including a bottom wall and an opening configured to engage a portion of a user's body, a drive unit, and a linear reciprocating mechanism. The drive unit is configured to reciprocate the bottom wall via the linear reciprocating mechanism to vary the volume of the chamber. The pressure generator further includes a fixed sleeve and a motion sleeve, the motion sleeve being disposed between the fixed sleeve and the bottom wall, the fixed sleeve and the motion sleeve being concentric with each other and defining the chamber together with the bottom wall.

Description

[Technical field]

[0001] The present disclosure relates to sexual pleasure devices, and more particularly to massagers or toys for engaging and sexually stimulating the human body, particularly the clitoris. [Background technology]

[0002] The clitoris, with its abundant nerve endings, is the most sensitive erogenous zone in the human female body. The clitoris is generally the primary anatomical source of sexual pleasure for human females. When sexually stimulated, the clitoris can cause sexual arousal in women. Sexual stimulation, including arousal, can be triggered by mental stimulation, foreplay with a sexual partner, or masturbation, leading to orgasm. The most effective sexual stimulation of this organ is usually performed manually or orally (cunnilingus), which is often referred to as direct stimulation of the clitoris. When sexual penetration is involved, these acts are also called additional or supplementary clitoral stimulation. Furthermore, due to the sensitivity of the glans, direct stimulation of the glans does not always bring about pleasure; instead, direct stimulation of the glans hood or near the glans is often more pleasurable, and the majority of women prefer to stimulate the glans using the glans hood or indirectly by rolling the glans between the labia.

[0003] Therefore, the erogenous zone of the human body can be stimulated using various tools. For example, vibrators are used to stimulate certain areas of the skin by direct contact. However, stimulation by vibrators can cause skin irritation and inflammation. In addition, for hygiene reasons or personal discretion, it may not be desirable to directly contact such tools with the genitals. Summary of the Invention

[0004] According to one aspect of the disclosure, a stimulation device is provided. The stimulation device includes a pressure generator having a chamber and an opening that is the only opening of the chamber to an exterior of the pressure generator. The opening is configured to engage a portion of a user's body. The chamber is defined by a movable container and a fixed sleeve that is inserted into the movable container. The stimulation device further includes a drive unit and a linear reciprocating mechanism. The drive unit is configured to reciprocate the movable container with the linear reciprocating mechanism, thereby varying the volume of the chamber.

[0005] In one embodiment, the movable container comprises a motion sleeve fixed to a bottom of a motion sleeve, the motion sleeve being disposed between the fixed sleeve and the bottom wall, and the fixed sleeve being inserted into the motion sleeve.

[0006] In one embodiment, the width of the gap between the fixed sleeve and the movable container is less than 0.1 mm. In one embodiment, the width of the gap between the fixed sleeve and the movable container is in the range of about 0.02 mm to 0.05 mm.

[0007] In one embodiment, the drive unit is a motor and the linear reciprocating mechanism is a crank link mechanism, and a connecting rod of the crank link mechanism is connected to the bottom of the movable container so that the movable container reciprocates when a crank of the crank link mechanism rotates together with the motor.

[0008] According to another aspect of the present disclosure, a stimulation device is provided, the stimulation device includes a pressure generator including a chamber, the chamber having a bottom wall and an opening configured to engage a portion of a user's body, the stimulation device further includes a drive unit and a linear reciprocating mechanism, the drive unit reciprocating the bottom wall with the linear reciprocating mechanism, thereby varying a volume of the chamber, the pressure generator further includes a fixed sleeve and a movable sleeve, the movable sleeve being disposed between the fixed sleeve and the bottom wall such that the fixed sleeve and the movable sleeve are concentric with each other and define a chamber together with the bottom wall.

[0009] In one embodiment, the stimulation device can include a movable container, the movable container including a movable sleeve and a bottom wall fixed to a bottom of the movable sleeve, the movable sleeve being disposed between the fixed sleeve and the bottom wall, the fixed sleeve being inserted into the movable sleeve such that the fixed sleeve and the movable sleeve are concentric with each other and define a chamber together with the bottom wall, and the drive unit is configured to reciprocate the movable container via a linear reciprocating mechanism.

[0010] In one embodiment, the stationary sleeve and the motion sleeve may be made of metal, and the outer edges of the motion sleeve and bottom wall may be assembled with a layer of plastic wrapped around them.

[0011] In one embodiment, the linear reciprocating mechanism may be selected from the group consisting of a ball screw mechanism, a belt driven linear actuator, a linear motor, a slider crank mechanism, a hydraulic linear actuator, and a pneumatic linear actuator.

[0012] In one embodiment, the width of the gap between the fixed sleeve and the moving sleeve may be less than 0.1 mm. As a result, the gap between the fixed sleeve and the moving container is less than 0.1 mm. In one embodiment, the width of the gap between the fixed sleeve and the moving sleeve is in the range of about 0.02 mm to 0.05 mm.

[0013] In one embodiment, the stimulator may further include a housing that encloses the drive unit, the linear reciprocating mechanism, and a portion of the pressure generator.

[0014] In one embodiment, the retention sleeve is retained in the housing via a retention gasket, and a portion of the housing associated with the retention gasket and retention sleeve is removable to access the pressure generator.

[0015] In one embodiment, the removable portion of the housing may be attached to the main body of the housing via a magnetic fastener, a threaded fastener, or a snap fit fastener.

[0016] In one embodiment, the width of the gap between the motion sleeve and the inner wall of the housing may be greater than 0.1 mm. In one embodiment, the width is greater than 1 mm.

[0017] In one embodiment, the width of the gap between the bottom wall and the inner wall of the housing may be greater than 0.1 mm. In one embodiment, the width is greater than 1 mm.

[0018] In one embodiment, the drive unit may be a motor and the linear reciprocating mechanism may be a crank link mechanism.

[0019] In one embodiment, a connecting rod of a crank-link mechanism is connected to the bottom of the bottom wall, thereby causing the bottom wall to reciprocate when the crank of the crank-link mechanism rotates with the motor. The reciprocating movement of the bottom wall causes the moving sleeve to reciprocate while the moving sleeve receives the fixed sleeve.

[0020] In one embodiment, the stimulator may further include a controller configured to receive input from a user and control the drive unit.

[0021] In one embodiment, the linear reciprocating mechanism may be removably connected to a pressure generator.

[0022] According to another aspect of the present disclosure, a stimulation device is provided. The stimulation device includes a pressure generator including a chamber including a bottom wall and an opening configured to engage a portion of a user's body. The stimulation device further includes a drive unit and a linear reciprocating mechanism, the drive unit configured to reciprocate the bottom wall via the linear reciprocating mechanism, thereby changing the volume of the chamber. The stimulation device further includes a housing enclosing the drive unit, the linear reciprocating mechanism, and a portion of the pressure generator. The pressure generator further includes a fixed sleeve and a motion sleeve, the motion sleeve being disposed between the fixed sleeve and the bottom wall such that the fixed sleeve and the motion sleeve are concentric with one another and define a chamber together with the bottom wall. The fixed sleeve is retained to the housing via a retention gasket. Also, a portion of the housing associated with the retention gasket and the fixed sleeve is removable to access the pressure generator.

[0023] In one embodiment, the removable portion of the housing may be attached to the main body of the housing via a magnetic fastener, a threaded fastener, or a snap fit fastener.

[0024] In the context of this specification, the term "processor" refers to one or more of a microprocessor, a microcontroller, a general purpose processor, a Field Programmable Gate Array (FPGA), or an Application Specific Integrated Circuit (ASIC), or the like.

[0025] In the context of this specification, the term "memory unit" refers to one or more of volatile storage memories, such as static random access memories (SRAMs) and dynamic random access memories (DRAMs), such as asynchronous DRAMs, synchronous DRAMs, double data rate SDRAMs, Rambus DRAMs, cache DRAMs, etc., or non-volatile storage memories, such as EPROMs, EEPROMs, flash memories, etc.

[0026] In the context of this specification, the term "communications interface" refers to a device or module that enables a direct connection via wires and connectors, such as USB, HDMI, VGA, or a wireless connection, such as Bluetooth, Wi-Fi, a local area network (LAN) or a wide area network (WAN) implemented via TCP / IP, IEEE802.x, GSM, CDMA, LTE, or other equivalent protocols. [Brief description of the drawings]

[0027] The following detailed description of the exemplary embodiments is better understood when read in conjunction with the accompanying drawings. To illustrate the disclosure, exemplary structures of the disclosure are shown in the drawings. However, the disclosure is not limited to the specific apparatus or tools and instruments disclosed herein. Furthermore, those skilled in the art should understand that the drawings are not to scale.

[0028] [Figure 1] FIG. 1 shows a perspective view of a stimulation device according to an embodiment of the present disclosure.

[0029] [Diagram 2] FIG. 2 shows an exploded view of the stimulator of FIG.

[0030] [Diagram 3] FIG. 3 shows a cross-sectional view of the stimulation device of FIG.

[0031] [Figure 4] FIG. 4 shows a cross-sectional view of the stimulation device of FIG. 1 with positive pressure within a chamber defined by a fixed sleeve, a moving sleeve and a bottom wall.

[0032] [Diagram 5] FIG. 5 shows an enlarged view of portion "A" of FIG.

[0033] [Figure 6] FIG. 6 shows an enlarged view of portion "B" of FIG.

[0034] [Figure 7] FIG. 7 illustrates a stimulation device according to another embodiment of the present disclosure.

[0035] The drawings referred to herein are not to be understood as being drawn to scale, unless specifically noted, and such drawings are merely illustrative in nature. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0036] In the following description, for the purpose of explanation, numerous specific details are described to provide a complete understanding of the present disclosure. However, it will be apparent to those skilled in the art that the present disclosure can be implemented without these specific details. Descriptions of well-known components and processing techniques are omitted so as not to unnecessarily obscure the embodiments herein. The examples used herein are merely intended to facilitate understanding of how the embodiments herein can be implemented, and further enable those skilled in the art to implement the embodiments herein. Thus, the examples should not be interpreted as limiting the scope of the embodiments herein.

[0037] References herein to "one embodiment" or "embodiment" mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present disclosure. Although the phrase "in one embodiment" appears in various places in this specification, it does not necessarily refer to the same embodiment, nor are separate or alternative embodiments mutually exclusive with other embodiments. Furthermore, various features are described that may be shown in some embodiments and not shown in other embodiments. Similarly, various requirements are described that may be required in some embodiments but not in other embodiments.

[0038] Moreover, while the following description contains many specific details for purposes of explanation, anyone skilled in the art will appreciate that many variations and / or modifications to said details are within the scope of the present disclosure. Similarly, while many of the features of the present disclosure are described in conjunction with or in conjunction with each other, those skilled in the art will appreciate that many of these features may be provided independently of other features. Thus, this description of the present disclosure is provided without any loss of generality to, and without imposing limitations on, the present disclosure.

[0039] Various embodiments of the present disclosure provide a stimulation device for sexually stimulating a user's body. The stimulation device includes a drive unit operably coupled to a linear reciprocating mechanism. The drive unit may be a motor, and the linear reciprocating mechanism may be a crank link mechanism. The stimulation device further includes a pressure generator including a fixed sleeve, a moving sleeve, and a bottom wall. The fixed sleeve and the moving sleeve together with the bottom wall define a chamber. The fixed sleeve is fixed relative to a housing of the stimulation device and is held by a retaining gasket. The moving sleeve is configured to reciprocate with the bottom wall. The reciprocating movement of the bottom wall and the moving sleeve is enabled by the linear reciprocating mechanism. The reciprocating movement of the moving sleeve and the bottom wall relative to the fixed sleeve increases and decreases the volume of the chamber, generating negative and positive relative pressures with respect to the surroundings. When an opening in the chamber engages a part of the user's body, the negative and positive pressures generate a suction effect in the pressure generator, leading to sexual stimulation of the user. In some embodiments, a portion of the housing associated with the fixed sleeve and the retaining gasket may be removable from the main body of the housing. The detachable portion may be attachable to the body using magnetic, screw or clip snap-fit ​​fasteners.

[0040] Various exemplary embodiments of the present disclosure are described below with reference to FIGS.

[0041] FIG. 1 is a perspective view of a stimulation device 100 according to an embodiment of the present disclosure. FIG. 1 illustrates a pressure generator 102 having an opening 104 in the pressure generator 102. The opening 104 is configured to engage a portion of a user's body to provide sexual stimulation to the user. Additionally, the stimulation device 100 includes a housing 106 that encapsulates at least a portion of the pressure generator 102 and other components of the stimulation device 100, which will be described later. In some embodiments of the present disclosure, the housing 106 is constructed of a thermoplastic elastomer (TPE) material. TPE combines the properties of elastomers, such as softness and flexibility, with the processing capabilities of thermoplastics, such as recyclability. As such, the use of a TPE material for the housing 106 allows the housing 106 to be soft, flexible, and recyclable.

[0042] FIG. 2 shows an exploded view of the stimulation device 100 of FIG. 1. FIG. 2 shows the housing 106 that encloses several components of the stimulation device 100. The pressure generator 102 includes a fixed sleeve 204 and a movable container 205. The movable container 205 includes a motion sleeve 206 and a bottom wall 208 that is fixed to the bottom of the motion sleeve 206. The motion sleeve 206 is disposed between the fixed sleeve 204 and the bottom wall 208. The motion sleeve 206 also receives the fixed sleeve 204. The fixed sleeve 204 and the motion sleeve 206 are made of metal, but the bottom wall 208 and the motion sleeve 206 are assembled by wrapping a plastic layer around the outer edge of the bottom wall 208. The bottom wall 208 is made of plastic and includes a side wall 207 that surrounds the bottom 209. The side wall 207 extends upward from the bottom 209 of the bottom wall 208. The side wall 207 also receives at least a portion of the side wall 211 of the movable sleeve 206 to facilitate assembly of the movable sleeve 206 and bottom wall 208 to the movable container 205 .

[0043] The bottom wall 208 further includes a bearing fixture 210 at a bottom 209 of the bottom wall 208. The bearing fixture 210 receives a bearing 212. The bearing 212 may be a roller bearing, a thrust bearing, or the like. Further, enclosed within the housing 106 is a linear reciprocating mechanism 214. The linear reciprocating mechanism 214 in this embodiment is a crank link mechanism and includes a crank 216 and a connecting rod 218. The crank 216 is rotatably connected to a drive unit 220, and the connecting rod 218 is rotatably connected to the crank 216. In an exemplary embodiment, the drive unit 220 is a motor. In some alternative embodiments, the linear reciprocating mechanism 214 may include a ball screw mechanism, a belt-driven linear actuator, a linear motor, a slider crank mechanism, a hydraulic linear actuator, and a pneumatic linear actuator.

[0044] One end of the connecting rod 218 is rotatably connected to the crank 216. The other end of the connecting rod 218 is received in the bearing 212 of the bearing fixture 210. In this manner, the connecting rod 218 of the crank link mechanism is connected to the bottom of the movable container 205. This causes the movable container 205 to reciprocate when the crank 216 of the crank link mechanism rotates together with the drive unit 220 (which in this case is a motor). The housing 106 further encloses the drive unit 220. In some embodiments of the present disclosure, the drive unit 220 is an AC or DC electric motor. The crank 216 is rotatably connected to the drive unit 220. At that point, the rotation of the drive unit 220 causes the rotation of the crank 216. The rotation of the crank 216 is converted into the rotational and reciprocating motion of the connecting rod 218. The rotational and reciprocating motion of the connecting rod 218 results in the reciprocating motion of the bottom wall 208 via the bearing 212 and the bearing fixture 210. The reciprocating motion of the bottom wall 208 results in the reciprocating motion of the moving sleeve 206 and, consequently, the reciprocating motion of the movable container 205 .

[0045] Additionally, a retaining gasket 222 is secured to the bottom of the opening 104 within the housing 106, and the fixed sleeve 204 is secured to the bottom of the retaining gasket 222, also within the housing 106. When the motion sleeve 206 receives the fixed sleeve 204 and the bottom wall 208 reciprocates, the motion sleeve 206 is proximal to the retaining gasket 222 when the bottom wall 208 moves to the top of the reciprocation, and the motion sleeve 206 is distal to the retaining gasket 222 when the bottom wall 208 moves to the bottom of the reciprocation. The retaining gasket 222 seals the housing 106 at the opening 104. The drive unit 220 is configured to be powered by a rechargeable battery 224 via a charging port 226. In that regard, the battery 224 may be a nickel metal hydride battery, a lithium ion battery, a lithium polymer battery, or the like.

[0046] FIG. 3 is a cross-sectional view of the stimulation device 100 of FIG. 1. The fixed sleeve 204 and the motion sleeve 206 are concentric with each other and define a chamber 302 with the bottom wall 208. The fixed sleeve 204 is inserted into the motion sleeve 206, and therefore the fixed sleeve 204 is also inserted into the movable container 205. The bottom wall 208 is fixed to the bottom of the motion sleeve 206, thereby sealing the lower opening of the motion sleeve 206. Furthermore, the side wall 207 of the bottom wall 208 at least partially receives the motion sleeve 206. The fixed sleeve 204 remains fixed with the retaining gasket 222, and the motion sleeve 206 is configured to reciprocate with the bottom wall 208. Also, as described in FIG. 2, the motion sleeve 206 is proximal to the retaining gasket 222 when the bottom wall 208 reaches the top of the reciprocation, and is distal to the retaining gasket 222 when the bottom wall 208 reaches the bottom of the reciprocation. As moving sleeve 206 reciprocates with bottom wall 208, moving sleeve 206 moves along outer side wall 211 of fixed sleeve 204 in the longitudinal direction as moving sleeve 206 remains encased in at least a portion of fixed sleeve 204. As crank 216 rotates and bottom wall 208 is pulled downward by connecting rod 218 via bearing fixture 210, moving sleeve 206 also moves downward relative to fixed sleeve 204 while encasing at least a portion of fixed sleeve 204. The downward movement of moving sleeve 206 creates a negative pressure in chamber 302.

[0047] The opening 104 is the only opening of the chamber 302 that leads to the outside of the pressure generator 102. Furthermore, the opening 104 is connected to the fixed sleeve 204 and is therefore in fluid communication with the fixed sleeve 204. The downward movement of the motion sleeve 206 also increases the volume of the chamber 302. FIG. 3 also shows a controller 310 configured to receive input from a user and control the drive unit 220. In this embodiment, the controller 310 is a button. The button located on the housing 106 is used to actuate the rotation of the drive unit 220 and / or change the rotation state. In some alternative embodiments, the controller 310 may include a processor, a memory unit, and a communication interface. Furthermore, the controller 310 may be configured to connect with an external communication device via the communication interface and receive input for control of the characteristics of the drive unit 220 from the external communication device.

[0048] FIG. 4 shows a cross-sectional view of the stimulation device 100 of FIG. 1 with positive pressure in the chamber 302. The positive pressure is generated when the crank 216 rotates and the bottom wall 208, the moving sleeve 206, and thus the movable container 205 move upwards through the bearing fixture 210. As the bottom wall 208 moves upwards, the moving sleeve 206 also moves upwards while remaining concentric with the fixed sleeve 204. At this time, it also receives the fixed sleeve 204. The upward movement of the moving sleeve 206 results in a decrease in the volume of the chamber 302 and the generation of a positive pressure in the chamber 302. The change in the volume of the chamber 302 due to the rotational movement of the drive unit 220 and the reciprocating movement of the bottom wall 208, the moving sleeve 206, and the movable container 205 creates a suction effect inside the pressure generator 102 that generates alternating positive and negative relative pressures with respect to the surroundings.

[0049] FIG. 5 is an enlarged view of a portion "A" of FIG. 4. The fixed sleeve 204, the motion sleeve 206, and the bottom wall 208 together define the chamber 302. The motion sleeve 206 and the bottom wall 208 define the movable container 205 that receives the fixed sleeve 204. FIG. 5 further shows a first gap 510 between the fixed sleeve 204 and the movable sleeve 206. The first gap 510 is also the gap between the fixed sleeve 204 and the movable container 205. In one embodiment of the present disclosure, the width of the first gap 510 between the fixed sleeve 204 and the motion sleeve 206 (or the movable container 205) is less than 0.1 mm. In an embodiment of the present disclosure, the width of the first gap 510 is in the range of 0.02 to 0.05 mm.

[0050] FIG. 6 shows an enlarged view of portion "B" of FIG. 4. Fixed sleeve 204 is concentric with and plugged into motion sleeve 206. Fixed sleeve 204 and motion sleeve 206 further define chamber 302 together with bottom wall 208. Mobile sleeve 206 and bottom wall 208 together define movable container 205. Fixed sleeve 204 is fixedly held to housing 106 via retaining gasket 222. Fixed sleeve 204, motion sleeve 206, and bottom wall 208 are surrounded by housing 106. FIG. 6 further shows a second gap 610 between motion sleeve 206 and the inner wall of housing 106. Second gap 610 thus also represents the gap between the inner wall of housing 106 and movable container 205. Second gap 610 is also the gap between the inner wall of housing 106 and side wall 211 of motion sleeve 206. In one embodiment of the present disclosure, the width of the second gap 610 between the motion sleeve 206 and the inner wall of the housing 106 is greater than 0.1 mm, preferably greater than 1 mm. Figure 6 also shows a third gap 620 between the bottom wall 208 and the inner wall of the housing 106. The third gap 620 is also the gap between the side wall 207 of the bottom wall 208 and the inner wall of the housing 106. In one embodiment of the present disclosure, the width of the third gap between the bottom wall 208 and the inner wall of the housing 106 is greater than 0.1 mm, preferably greater than 1 mm.

[0051] FIG. 7 shows a stimulation device 100 according to another embodiment of the present disclosure. The drive unit 220 is a motor. Furthermore, the pressure generator 102 includes a fixed sleeve 204, a motion sleeve 206, and a bottom wall 208. The motion sleeve 206 and the bottom wall 208 define a movable container 20 in which the motion sleeve 206 receives the fixed sleeve 204. The linear reciprocating mechanism 214 is a crank link mechanism. The bottom wall 208 is fixed to the bottom of the motion sleeve 206, thereby sealing the opening below the motion sleeve 206. Furthermore, the fixed sleeve 204 is concentric with the motion sleeve 206, and the motion sleeve 206 is located between the fixed sleeve 204 and the bottom wall 208. The fixed sleeve 204 is retained in the housing 106 via a retaining gasket 222. Furthermore, a portion 710 of the housing 106 associated with the retaining gasket 222 and the fixed sleeve 204 is removable from the body 720 of the housing 106. The removable portion 710 allows for easy access to the pressure generator 102 for cleaning, and repair and rebuilding. In one embodiment, the portion 710 of the housing 106 may be attached to the body 720 using a magnetic fastener. In another embodiment, the portion 710 of the housing 106 may be attached to the body 720 using a clip snap fit fastener, or the portion 710 of the housing 106 may be attached to the body 720 using a threaded fastener. Advantages of the embodiment

[0052] The pressure field created by the negative and positive relative pressure stimulates blood circulation in the area of ​​skin being stimulated, while said area of ​​skin is indirectly massaged, so two beneficial effects are combined. The increased blood circulation makes the subject's erogenous zone more sensitive, while at the same time generating an additional massage effect that helps, for example, to stimulate the erogenous zone to sexual arousal up to climax.

[0053] By exemplarily using a temporarily modifiable pressure field on the clitoris, the pressure field mimics the stimulation that normally occurs only during sexual intercourse. Similarly, cohabitation movements generate different stimulations on the clitoris. In this way, the use of a pressure field closely mimics the natural act of cohabitation and does not induce habituation effects or addiction. This is especially due to the alternating use of negative and positive pressure (or not using only one type of pressure continuously).

[0054] Moreover, the maximum pressure that can be applied is usually limited by the maximum elasticity of the skin area to be stimulated. Thus, for example, if the negative pressure is too high, there is a risk of painful damage, especially in the aerogeneous zone. Stimulators that operate only with negative pressure are usually limited to this maximum value in their operating mode. Conversely, the combination of positive and negative pressure expands the area of ​​action of the pressure field or effect that causes the stimulation, since the area of ​​action of the pressure can be maximally utilized in both positive and negative pressure areas.

[0055] As noted above, various embodiments of the present disclosure may be implemented using steps and / or operations in different orders, and / or hardware elements in different configurations than those disclosed. Thus, while the present disclosure has been described based on these exemplary embodiments, it should be noted that modifications, variations, and alternative constructions are apparent and are well within the scope of the present disclosure.

Claims

1. 1. A stimulation device, comprising: a pressure generator comprising a chamber and an opening that is the only opening of the chamber to an exterior of the pressure generator, the chamber being defined by a movable container and a fixed sleeve that is inserted into the movable container, the opening being configured to engage a part of a user's body; A stimulation device comprising: a drive unit and a linear reciprocating mechanism, the drive unit configured to reciprocate the movable container with the linear reciprocating mechanism, thereby changing the volume of the chamber.

2. The stimulation device of claim 1 , wherein the width of the gap between the fixed sleeve and the movable container is less than 0.1 mm.

3. 3. The stimulation device of claim 2, wherein the width of the gap between the fixed sleeve and the movable container is in the range of about 0.02 mm to 0.05 mm.

4. The stimulation device of claim 1 , further comprising a housing enclosing the drive unit, the linear reciprocating mechanism, and a portion of the pressure generator.

5. 2. The stimulation device of claim 1, wherein the movable container comprises a moving sleeve and a bottom wall fixed to a bottom of the moving sleeve, the moving sleeve being positioned between the fixed sleeve and the bottom wall, and the fixed sleeve being inserted into the moving sleeve.

6. 5. The stimulation device of claim 4, wherein the movable container comprises a movement sleeve and a bottom wall fixed to a bottom of the movement sleeve, and the width of the gap between the movement sleeve and the inner wall of the housing is greater than 0.1 mm.

7. 6. The stimulation device of claim 5, wherein the fixed sleeve and the motion sleeve are made of metal, and the bottom wall and the outer edge of the motion sleeve are assembled by wrapping a layer of plastic around them.

8. 6. The stimulation device of claim 5, wherein the bottom wall is made of plastic and includes a side wall surrounding a bottom portion of the bottom wall to receive a portion of the side wall of the exercise sleeve.

9. 9. The stimulation device of claim 8, wherein the width of the gap between the side wall of the bottom wall and the inner wall of the housing is greater than 0.1 mm.

10. The fixed sleeve is retained in the housing via a retaining gasket; The stimulation device of claim 4 , wherein a portion of the housing associated with the retaining gasket and the fixation sleeve is removable to provide access to the pressure generator.

11. The stimulation device of claim 1 , wherein the opening is connected to the fixation sleeve.

12. the drive unit is a motor, and the linear reciprocating mechanism is a crank link mechanism; 2. The stimulation device of claim 1, wherein the connecting rod of the crank linkage is connected to the bottom of the movable container such that the movable container reciprocates when the crank of the crank linkage rotates with the motor.

13. The movable container includes a movement sleeve and a bottom wall fixed to a bottom of the movement sleeve; 13. The stimulation device of claim 12, wherein a connecting rod of the crank link mechanism is connected to the bottom of the bottom wall, such that the moving sleeve reciprocates while receiving a portion of the fixed sleeve when the crank of the crank link mechanism rotates with the motor.

14. The stimulation device of claim 13 , wherein the motion sleeve moves along an outer sidewall of the stationary sleeve in a longitudinal direction.

15. The movable container includes a movement sleeve and a bottom wall fixed to a bottom of the movement sleeve; 12. The stimulation device of claim 11, wherein the fixed sleeve and the motion sleeve are concentric with one another, and when the bottom wall moves to the top, the motion sleeve is proximal to the retaining gasket, and when the bottom wall moves to the bottom, the motion sleeve is distal to the retaining gasket.

16. The stimulation device of claim 1 , further comprising a controller configured to receive input from a user and control the drive unit.

17. 1. A stimulation device, comprising: a pressure generator comprising a chamber and an opening that is the only opening of the chamber to an exterior of the pressure generator, the chamber being defined by an exercise sleeve, a bottom wall fixed to a bottom of the exercise sleeve, and a fixed sleeve inserted into the exercise sleeve, the fixed sleeve and the exercise sleeve being concentric with one another, the opening being configured to engage a portion of a user's body; A stimulation device comprising: a drive unit and a linear reciprocating mechanism, the drive unit reciprocating the bottom wall with the linear reciprocating mechanism, the moving sleeve being held to receive a portion of the fixed sleeve, thereby changing the volume of the chamber.

18. 20. The stimulation device of claim 17, wherein the width of the gap between the fixed sleeve and the motion sleeve is less than 0.1 mm.

19. a housing enclosing the drive unit, the linear reciprocating mechanism, and a portion of the pressure generator; The fixed sleeve is retained in the housing via a retaining gasket; a portion of the housing associated with the retention gasket and the fixation sleeve is removable to provide access to the pressure generator; 20. The stimulation device of claim 17.

20. the drive unit is a motor, and the linear reciprocating mechanism is a crank link mechanism; 18. The stimulation device of claim 17, wherein the connecting rod of the crank linkage is connected to a bottom of the bottom wall such that the moving sleeve and bottom wall reciprocate when the crank of the crank linkage rotates with the motor.

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