Improved massager

Abstract

Improved massage device comprising a rubber sleeve (1), characterized in that the rubber sleeve (1) is fixedly connected internally to a first outer housing (2), wherein one side of the first outer housing (2) is fixedly connected to a second outer housing (3) and a telescopic assembly is arranged inside the first outer housing (2) and the second outer housing (3);wherein the telescopic assembly comprises an inner housing (6), the outer wall of the inner housing (6) is slidably connected to the interior of the first outer housing (2) and the second outer housing (3), wherein a ball sleeve (9) is rotatably mounted inside the inner housing (6), an arcuate groove (14) is formed inside the ball sleeve (9), and a steel ball (10) is arranged in the ball sleeve (9) and interacts with the arcuate groove (14), wherein a limiting assembly is arranged inside each of the first outer housing (2) and the second outer housing (3), and a drive assembly is arranged in the inner housing (6);

Description

Technical field

[0001] The present utility model relates to the field of massage technology, in particular an improved massage device. State of the art

[0002] With the accelerating pace of modern life and a general increase in health awareness, problems such as muscle fatigue and pain caused by prolonged sitting, remaining in one position, or overexertion during sports are becoming increasingly common. The massage device, which as an electronic product can simulate manual massage, effectively relieve muscle tension, and promote local blood circulation, has become a popular health aid in many homes and offices. Therefore, the continuous optimization of the internal structure to improve massage comfort and the smoothness of adjustments represents an ongoing development direction in this technological field.

[0003] In the prior art, many handheld or portable massage devices typically use a rack and pinion drive as the central telescopic adjustment mechanism to achieve a tapping or percussive massage effect. The mechanical structure generally comprises a micro DC electric motor, a multi-stage reduction gear, and a rack connected to the massage head. The technical principle is that, after the electric motor is started, the speed is reduced by the reduction gear, increasing the output torque. The output gear (small gear) at the end of the gearbox engages with a rack, which can perform a linear reciprocating motion. As the small gear rotates, the rack moves back and forth, causing the massage head attached to the front end to perform a telescopic percussive motion.By regulating the speed of the electric motor, the frequency and intensity of the massage can be controlled.

[0004] This conventional transmission method for telescopic adjustment, relying entirely on the interlocking of gears and racks, has a significant drawback in practice that negatively impacts the user experience: the telescoping process is not sufficiently smooth and is often accompanied by noticeable jerks. This is primarily due to the inherent mechanical play (backlash) of the gear drive itself. During the high-frequency, alternating operation of the rack by the electric motor, the impacts between the teeth and the compensation of this backlash result in slight vibrations and inconsistencies. Simultaneously, manufacturing inaccuracies in the gears and racks, as well as wear and tear after prolonged use, further exacerbate this irregularity in movement.This jerking significantly impairs the massage experience; the user does not perceive a smooth, flowing force, but rather a hard, interrupted jolt, which considerably reduces the practicality and comfort of the massage device. Content of the present utility model

[0005] To remedy the aforementioned defects, the present utility model provides an improved massage device which aims to eliminate the problem of jerking during the telescopic adjustment of conventional gear-driven massage devices.

[0006] To achieve the above-mentioned objective, the following technical solution is proposed in the present utility model: An improved massage device comprising a rubber sleeve, wherein the rubber sleeve is firmly connected inside to a first outer housing, wherein one side of the first outer housing is firmly connected to a second outer housing, and a telescopic assembly is arranged inside the first outer housing and the second outer housing; wherein the telescopic assembly comprises an inner housing, the outer wall of the inner housing being slidably connected to the interior of the first outer housing and the second outer housing, wherein a ball sleeve is rotatably mounted inside the inner housing, an arc-shaped groove is formed inside the ball sleeve, and a steel ball is arranged in the ball sleeve which interacts with the arc-shaped groove, wherein a limiting assembly is arranged inside the first outer housing and the second outer housing, and a drive assembly is arranged in the inner housing.

[0007] As a further development of the above-mentioned technical solution: The limiting assembly comprises a limiting pin, wherein one end of the limiting pin is fixedly connected to the outer wall of the inner housing, the first outer housing and the second outer housing are each provided with a ball groove and a first limiting groove, the steel ball interacts with the ball groove and the limiting pin is arranged to slide in the first limiting groove.

[0008] As a further development of the above-mentioned technical solution: The drive assembly comprises a telescopic drive motor, wherein the outer wall of the telescopic drive motor is firmly connected inside the inner housing and the output end of the telescopic drive motor is connected to the inside of the ball sleeve.

[0009] As a further development of the above-mentioned technical solution: The inner housing is rigidly connected inside to a swivel motor, with the output side of the swivel motor rigidly connected to a first eccentric.

[0010] As a further development of the above-mentioned technical solution: The first outer housing and the second outer housing are rotatably connected inside to a swivel housing, the swivel housing being slidably connected inside to the outer wall of the first eccentric.

[0011] As a further development of the above-mentioned technical solution: The swivel housing is rigidly connected inside to a drive motor, with the output side of the drive motor rigidly connected to a second eccentric.

[0012] As a further development of the above-mentioned technical solution: The swivel housing is rotatably connected inside to a pivot pin, the outer wall of the pivot pin being rotatably connected to a cover and a guide groove being formed inside the cover.

[0013] As a further development of the above-mentioned technical solution: The second eccentric is arranged to slide in the guide groove.

[0014] The present utility model exhibits the following advantageous effects: 1. In the present utility model, the output of the telescopic drive motor initially drives the ball sleeve into rotation. While the ball sleeve rotates, the inner housing is fixed in the ball groove by the limiting mechanism of the steel ball and guided by the first limiting groove, thus extending or retracting it. This improves the smoothness of the telescopic adjustment and solves the problem of jerking in the telescopic adjustment of conventional gear-driven massage devices, thereby increasing the usability of the massage device. 2. In the present utility model, the first eccentric causes the swivel housing to rotate via the connecting groove. When the swivel angle of the housing is adjusted, one end of the second eccentric slides in the guide groove, causing the housing to swivel up and down around the pivot pin as its center point. This simulates a swiveling, manual massage and improves portability. This solves the problem of conventional massage devices, which are bulky and unwieldy and cannot be used anytime and anywhere, and increases the user-friendliness of the massage device. Brief description of the characters Fig. Figure 1 shows a perspective view of an improved massage device proposed in the present utility model; Fig. Figure 2 shows a schematic structural representation of the first outer casing of an improved massage device proposed in the present utility model; Fig. Figure 3 shows a schematic structural representation of the inner housing of an improved massage device proposed in the present utility model; Fig. Figure 4 shows a schematic structural representation of the steel ball of an improved massage device proposed in the present utility model; Fig. Figure 5 shows an exploded view of the lid of an improved massage device proposed in the present utility model. Detailed descriptions

[0015] The technical solution of the exemplary embodiments of this utility model is described clearly and completely below with reference to the accompanying drawings. Obviously, the described exemplary embodiments represent only a subset of the exemplary embodiments of this utility model and not all of them. All further exemplary embodiments that a person skilled in the art in this field can achieve based on the exemplary embodiments of this utility model without inventive step fall within the scope of protection of this utility model.

[0016] With reference to the Fig. In sections 1 to 3, an embodiment of the present utility model is described below: An improved massage device comprising a rubber sleeve 1, the function of which is to provide the user with a non-slip and comfortable gripping surface. Inside the rubber sleeve 1, a first outer housing 2 is rigidly connected, serving as the main supporting structure of the massage device. A second outer housing 3 is rigidly connected to one side of the first outer housing 2, forming a complete, enclosed device housing together with the first outer housing 2. A telescopic assembly is arranged inside the first outer housing 2 and the second outer housing 3; this assembly is the central mechanism for realizing the forward and backward movement of the massage head.

[0017] The telescopic assembly comprises an inner housing 6, which serves as a movable component and drives the massage head into a telescopic movement. The outer wall of the inner housing 6 is slidably connected to the first outer housing 2 and the second outer housing 3, thus limiting the inner housing to a linear reciprocating movement within the device housing. Inside the inner housing 6, a ball sleeve 9 is rotatably connected. This sleeve acts as a rotating component driven by the electric motor and serves as the output element for converting the rotational movement into a linear movement. An arc-shaped groove 14 is formed in the ball sleeve 9, which serves as a fixed mounting location for the steel ball 10. A steel ball 10 is arranged within the ball sleeve 9 and acts as a transmission element, following the rotation of the ball sleeve and moving within the guide of the housing.The steel ball 10 is positively connected to the arc-shaped groove 14 to ensure that the steel ball rotates together with the ball sleeve. A limiting assembly is arranged inside each of the first outer housing 2 and the second outer housing 3, serving to guide and restrict the movement of the inner housing. A drive assembly, which serves as the energy source for the telescopic mechanism, is arranged in the inner housing 6. The limiting assembly includes a limiting pin 7, which acts as an anti-rotation device and prevents the inner housing from rotating during movement. One end of the limiting pin 7 is fixed to the outer wall of the inner housing 6, thus restricting the movement of the inner housing through the first limiting groove 5.In the first outer housing 2 and the second outer housing 3, a ball groove 4 and a limit groove 5 are each formed, providing a helical guide for the steel ball 10 and a linear guide for the limit pin 7 on the fixed housing. The steel ball 10 is positively connected to the ball groove 4, so that the movement of the steel ball in the helical ball groove 4 converts the rotational movement into an axial linear movement of the inner housing. The limit pin 7 is guided slidably in the first limit groove 5, thus forcing the inner housing into a purely linear movement and ensuring the stability of the telescopic movement. The drive assembly includes a telescopic drive motor 8, which provides the initial rotational force for the entire telescopic movement.The outer wall of the telescopic drive motor 8 is rigidly mounted inside the inner housing 6 to ensure that the motor and inner housing together perform the telescopic movement as a single unit. The output of the telescopic drive motor 8 is connected to the inside of the ball sleeve 9, so that the rotational force of the motor is directly transmitted to the ball sleeve, driving its rotation.

[0018] Referring to the Fig. 4 and Fig.Inside the inner housing 6, a swivel motor 11 is rigidly connected. Its function is to provide an independent drive source for the swivel function of the massage head. The output end of the swivel motor 11 is rigidly connected to the first eccentric 12, which converts the rotary motion of the motor into a periodic eccentric driving force to cause the swivel housing to vibrate. The first outer housing 2 and the second outer housing 3 are rotatably connected internally to the swivel housing 13, which serves as the main structure for the swivel movement of the massage head, enabling it to swivel left and right or forward and backward. The swivel housing 13 is slidably connected to the outer wall of the first eccentric 12, so that the rotation of the eccentric drives the swivel housing 13 into a reciprocating swivel motion.Inside the swivel housing 13, a drive motor 15 is permanently installed. Its function is to provide the force to adjust the tilt angle of the massage head relative to the swivel housing. The output end of the drive motor 15 is fixedly connected to the second eccentric 16, which converts the rotary motion of the drive motor 15 into an eccentric thrust force for angle adjustment. Inside the swivel housing 13, a pivot pin 17 is rotatably mounted. This pin serves as the central axis of rotation or pivot axis for raising and lowering the cover 18. The outer wall of the pivot pin 17 is rotatably connected to the cover 18, which acts as the end support for the massage head and whose tilt angle is adjustable. Inside the cover 18, a guide groove 19 is formed. This groove serves as a guide slot and, in conjunction with the second eccentric 16, controls the swivel angle of the cover 18.The second eccentric 16 is guided slidably in the guide groove 19, so that when the drive motor 15 is turned, the second eccentric 16 slides in the guide groove 19 and thereby pivots the cover 18 up and down around the pivot pin 17, thus enabling the adjustment of the massage angle.

[0019] Operating principle: When using the improved massage device, the telescopic drive motor 8 initially drives the ball sleeve 9 during telescoping, which rotates within a limited range inside the inner housing 6. Simultaneously, the steel balls 10 are embedded within the ball groove 4 inside the first outer housing 2. The outer wall of the inner housing 6 is guided by the limiting pin 7 in the first limiting groove 5 inside the first outer housing 2. As the ball sleeve 9 rotates, the inner housing 6 is extended or retracted along the limiting groove 5 by the steel balls 10, which are limited and fixed in the ball groove 4, thus improving the smoothness of the telescopic adjustment.

[0020] When a swivel massage is required, the output of the swivel motor 11 is used to drive the first eccentric 12. The first eccentric 12 causes the swivel housing 13 to rotate within the limit between the first outer housing 2 and the second outer housing 3, which in turn rotates the cover 18 at one end of the swivel housing 13. If the swivel angle of the cover 18 is to be adjusted simultaneously, the output of the drive motor 15 drives the second eccentric 16, one end of which slides in the guide groove 19, causing the cover 18 to swivel up and down around the pivot pin 17 as its center point. This simulates a swiveling, manual massage and improves portability.

[0021] Finally, it should be noted that the foregoing descriptions merely represent preferred embodiments of the present utility model and do not serve to limit its scope. Although the present utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the field may nevertheless make modifications to the technical solutions described in the embodiments or replace individual technical features with equivalent features. All modifications, equivalent replacements, improvements, etc., made within the spirit and principles of the present utility model are included in the scope of protection of the present utility model. Reference symbol list 1 rubber sleeve 2 First outer casing 3 Second outer casing 4 ball groove 5 First limit groove 6 inner housings 7 Limiting pin 8 Telescopic drive motor 9 ball sleeve 10 steel balls 11 Swivel motor 12 First eccentric 13 swivel housings 14 Arc-shaped groove 15 Drive motor 16 Second eccentric 17 pivot pins 18 lids 19 guide slots.

Claims

[1] Improved massage device comprising a rubber sleeve (1), characterized by, that the rubber sleeve (1) is fixedly connected inside to a first outer housing (2), wherein one side of the first outer housing (2) is fixedly connected to a second outer housing (3), and a telescopic assembly is arranged inside the first outer housing (2) and the second outer housing (3); wherein the telescopic assembly comprises an inner housing (6), the outer wall of the inner housing (6) being slidably connected to the interior of the first outer housing (2) and the second outer housing (3), wherein a ball sleeve (9) is rotatably mounted inside the inner housing (6), an arcuate groove (14) is formed inside the ball sleeve (9), and a steel ball (10) is arranged in the ball sleeve (9) which interacts with the arcuate groove (14), wherein a limiting assembly is arranged inside the first outer housing (2) and the second outer housing (3), and a drive assembly is arranged in the inner housing (6). [2] Improved massage device according to claim 1, characterized by , that the limiting assembly comprises a limiting pin (7), wherein one end of the limiting pin (7) is fixedly connected to the outer wall of the inner housing (6), the first outer housing (2) and the second outer housing (3) are each provided with a ball groove (4) and a first limiting groove (5), the steel ball (10) interacts with the ball groove (4) and the limiting pin (7) is arranged to slide in the first limiting groove (5). [3] Improved massage device according to claim 1, characterized by , that the drive assembly comprises a telescopic drive motor (8), the outer wall of the telescopic drive motor (8) is firmly connected inside the inner housing (6) and the output end of the telescopic drive motor (8) is connected to the inside of the ball sleeve (9). [4] Massage device according to claim 1, characterized by, that the inner housing (6) is rigidly connected inside to a swivel motor (11), wherein the output side of the swivel motor (11) is rigidly connected to a first eccentric (12). [5] Massage device according to claim 1, characterized by , that the first outer housing (2) and the second outer housing (3) are rotatably connected inside to a pivot housing (13), wherein the pivot housing (13) is slidably connected inside to the outer wall of the first eccentric (12). [6] Massage device according to claim 5, characterized by , that the swivel housing (13) is rigidly connected inside to a drive motor (15), wherein the output side of the drive motor (15) is rigidly connected to a second eccentric (16). [7] Improved massage device according to claim 5, characterized by, that the pivot housing (13) is rotatably connected inside to a pivot pin (17), wherein the outer wall of the pivot pin (17) is rotatably connected to a cover (18) and a guide groove (19) is formed inside the cover (18). [8] Improved massage device according to claim 6, characterized by , that the second eccentric (16) is arranged to slide in the guide groove (19).

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