Massage head adjustment mechanism

Abstract

This utility model discloses a massage head adjustment mechanism that allows the position of the massage head to be changed during massage, achieving a larger massage range and richer massage functions. The massage head adjustment mechanism includes a housing, a gearbox, a motor, a massage head, and an eccentric wheel. The gearbox is slidably fitted inside the housing and contains a gear set. The motor's output shaft passes through the gearbox and is driven by the gear set. The massage head is disposed on the surface of the housing and is driven by the gear set. The eccentric wheel is rotatably fitted on the side of the gearbox, with its inner end connected to the gear set, and an eccentric shaft is provided on its outer end face. The inner wall of the housing has a waist hole for the eccentric shaft to move within, the length direction of which is perpendicular to the sliding direction of the gearbox.

Description

Technical Field

[0001] This utility model belongs to the field of massage equipment technology, and specifically refers to a massage head adjustment mechanism. Background Technology

[0002] A massager is an electronic device used for body massage. It helps relieve muscle tension and pain and promotes blood circulation by simulating the kneading, tapping, and vibration movements of human hands. These devices typically allow users to set different massage modes and intensities to suit their individual needs.

[0003] Existing massagers typically have two massage heads in relatively fixed positions. The two massage heads are driven to rotate simultaneously by a motor inside the massager, so that the massage protrusions of different heights on the surface of the massage heads periodically massage the body parts.

[0004] Because the positions of the two massage heads are relatively fixed, meaning the distance between them cannot be changed, the massage range of the massager is limited, and the massage function is relatively simple, failing to meet the diverse user experience needs. Utility Model Content

[0005] The main purpose of this utility model is to provide a massage head adjustment mechanism to solve the problems existing in the prior art. It can change the position of the massage head during the massage process to achieve a larger massage range and richer massage functions.

[0006] To achieve the above objectives, the solution of this utility model is:

[0007] A massage head adjustment mechanism includes a housing, a gearbox, a motor, a massage head, and an eccentric wheel. The gearbox is slidably fitted inside the housing and contains a gear set. The output shaft of the motor passes through the gearbox and is driven by the gear set. The massage head is disposed on the surface of the housing and is driven by the gear set. The eccentric wheel is rotatably fitted on the side of the gearbox, and its end located inside the gearbox is driven by the gear set. An eccentric shaft is provided on the outer end face of the eccentric wheel. The inner wall of the housing has a waist hole for the eccentric shaft to move and engage, and the length direction of the waist hole is perpendicular to the sliding direction of the gearbox.

[0008] The output shaft of the motor is a first worm gear; the gear set includes a first spur gear, a second spur gear, a first worm wheel, and a second worm gear; the shaft of the first spur gear passes through the housing and is coaxially connected to the massage head; the second spur gear is coaxially connected to the first worm wheel, and the second spur gear meshes with the first spur gear, and the first worm wheel meshes with the output shaft; the second worm gear is coaxially connected to the shaft of the first spur gear or the shaft of the second spur gear, and is drively connected to the second worm wheel located on the inner end face of the eccentric wheel.

[0009] Preferably, the first spur gear and the second spur gear are respectively disposed on both sides of the output shaft of the motor; the second worm gear is coaxially connected to the shaft of the first spur gear.

[0010] The massage head adjustment mechanism further includes a gearbox cover that fits onto the gearbox body; the shaft of the first spur gear extends through the gearbox cover.

[0011] Preferably, the gearbox, gear set, massage head and eccentric wheel are provided at corresponding positions at both ends of the motor.

[0012] Preferably, a synchronizing gear seat is provided between the two gearbox covers, and a synchronizing gear is provided inside the synchronizing gear seat. A first rack and a second rack that mesh with the synchronizing gear are respectively provided on one side of the gearbox body and the other side of the gearbox cover.

[0013] The outer shell includes a detachably connected upper shell and a lower shell; the upper shell has a perforation corresponding to the position of the massage head and a heat dissipation hole corresponding to the position of the motor; the lower shell has the waist hole and several mounting slots.

[0014] The gearbox housing is provided with a bearing for the rotational engagement of the output shaft, and a limiting ring for axially limiting the output shaft.

[0015] After adopting the above technical solution, the present invention has the following technical effects:

[0016] This invention features a rotatable eccentric wheel on the side of the gearbox. The eccentric wheel has an eccentric shaft that movably engages with a waist hole in the inner wall of the outer casing, and the eccentric wheel is connected to the gear set for transmission. When the motor's power is transmitted to the gear set, it synchronously drives the eccentric wheel to rotate. Since the outer casing is a fixed component of the massage device, the movement of the eccentric shaft within the waist hole can be converted into torque on the eccentric wheel, thereby driving the gearbox to slide back and forth within the outer casing. This changes the relative position of the massage head and the outer casing, making the massage head position no longer fixed, resulting in a larger massage range. Furthermore, it can be combined with other structures of the massager to achieve richer massage functions. Attached Figure Description

[0017] Figure 1 This is a perspective view of a specific embodiment of the present utility model.

[0018] Figure 2 This is an exploded view of a specific embodiment of the present utility model.

[0019] Figure 3 This is a partial structural schematic diagram of a specific embodiment of the present utility model.

[0020] Figure 4 This is a cross-sectional view of a specific embodiment of the present utility model.

[0021] Explanation of icon numbers:

[0022] 1-Outer shell; 11-Upper shell; 111-Perforation; 112-Heat dissipation hole; 12-Lower shell; 121-Waist hole; 2-Gearbox body; 21-First rack; 3-Motor; 31-Output shaft; 4-Massage head; 5-Eccentric wheel; 51-Eccentric shaft; 52-Second worm gear; 6-First spur gear; 7-Second spur gear; 8-First worm gear; 9-Second worm; 10-Gearbox cover; 101-Second rack; 20-Synchronous gear seat; 30-Bearing; 40-Limiting ring. Detailed Implementation

[0023] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0024] refer to Figure 1-4 As shown, this utility model discloses a massage head adjustment mechanism, including a housing 1, a gearbox 2, a motor 3, a massage head 4, and an eccentric wheel 5;

[0025] The gearbox 2 is slidably fitted inside the outer casing 1, and a gear set is installed inside it;

[0026] The output shaft 31 of the motor 3 passes through the gearbox 2, and the output shaft 31 is connected to the gear set for transmission.

[0027] The massage head 4 is disposed on the surface of the housing 1 and is connected to the gear set for transmission.

[0028] The eccentric wheel 5 is rotatably fitted on the side of the gearbox 2, and its end located inside the gearbox 2 is connected to the gear set for transmission. An eccentric shaft 51 is provided on the outer end face of the eccentric wheel 5.

[0029] The inner wall of the outer casing 1 is provided with a waist hole 121 for the eccentric shaft 51 to move and cooperate. The length direction of the waist hole 121 is perpendicular to the sliding direction of the gearbox body 2.

[0030] Through the above solution, this utility model provides a rotatable eccentric wheel 5 on the side of the gearbox 2. The eccentric wheel 5 has an eccentric shaft 51 that is movably engaged with the waist hole 121 on the inner wall of the outer shell 1, and the eccentric wheel 5 is connected to the gear set for transmission. When the power of the motor 3 is transmitted to the gear set, it can synchronously drive the eccentric wheel 5 to rotate. Since the outer shell 1 is a fixed part of the massage device, the movement of the eccentric shaft 51 in the waist hole 121 can be converted into the torque of the eccentric wheel 5, thereby driving the gearbox 2 to slide back and forth in the outer shell 1, thereby changing the relative position of the massage head 4 and the outer shell 1. The position of the massage head 4 is no longer fixed, the massage range is larger, and it can be combined with other structures of the massager to achieve richer massage functions.

[0031] The following are specific embodiments of the present invention.

[0032] The output shaft 31 of the motor 3 is a first worm; the gear set includes a first spur gear 6, a second spur gear 7, a first worm wheel 8, and a second worm 9; the shaft of the first spur gear 6 passes through the outer casing 1 and is coaxially connected to the massage head 4 to drive the massage head 4 to rotate; the second spur gear 7 is coaxially connected to the first worm wheel 8 (the two can be integrally injection molded), and the second spur gear 7 meshes with the first spur gear 6, and the first worm wheel 8 meshes with the output shaft 31; the second worm 4 is coaxially connected to the shaft of the first spur gear 6 or the shaft of the second spur gear 7, and is connected to the second worm wheel 52 located on the inner end face of the eccentric wheel 5.

[0033] Furthermore, the first spur gear 6 and the second spur gear 7 are respectively disposed on both sides of the output shaft 31 of the motor 3; the second worm gear 9 is coaxially connected to the shaft of the first spur gear 6. As a result, the structural design inside the gearbox 2 is more compact, and the product size is smaller.

[0034] This utility model also includes a gearbox cover 10 that covers the gearbox body 2, used to shield and position the internal gear set and other components to ensure the functional stability of the structure; the shaft of the first spur gear 6 passes through the gearbox cover 10.

[0035] Furthermore, gearboxes 2, gear sets, massage heads 4, and eccentric wheels 5 are provided at corresponding positions at both ends of the motor 3, enabling this invention to have two massage heads 4 with massage output functions, meeting the functional requirements of general products. To enable the motor 3 to simultaneously drive the massage heads 4 at both ends for position adjustment, in addition to driving the eccentric wheels 5 through the gear set, a synchronous gear seat 20 is provided between the two gearbox covers 10. The synchronous gear seat 20 contains synchronous gears, and a first rack 21 and a second rack 101 meshing with the synchronous gears are respectively provided on one side of the gearbox 2 and the other side of the gearbox cover 10. Thus, synchronous movement of the two massage heads 4 can be achieved.

[0036] The aforementioned outer shell 1 includes a detachably connected upper shell 11 and a lower shell 12; the upper shell 11 is provided with a through hole 111 at the position corresponding to the massage head 4 so that the massage head 4 can be connected to the gear set, and a heat dissipation hole 112 is provided at the position corresponding to the motor 3; the lower shell 12 is provided with the aforementioned waist hole 121, as well as several mounting slots that match other components.

[0037] The gearbox 2 is provided with a bearing 30 for rotating the output shaft 31, and a limiting ring 40 for axially limiting the output shaft 31.

[0038] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A massage head adjustment mechanism, characterized in that: Includes the outer casing, gearbox, motor, massage head, and eccentric wheel; The gearbox body is slidably fitted inside the outer casing, and a gear set is provided inside it; The output shaft of the motor passes through the gearbox, and the output shaft is connected to the gear set in a transmission manner; The massage head is disposed on the surface of the housing and is connected to the gear set for transmission. The eccentric wheel is rotatably fitted on the side of the gearbox, and its end located inside the gearbox is connected to the gear set for transmission. An eccentric shaft is provided on the outer end face of the eccentric wheel. The inner wall of the outer casing is provided with a waist hole for the eccentric shaft to move and engage, and the length direction of the waist hole is perpendicular to the sliding direction of the gearbox body.

2. The massage head adjustment mechanism as described in claim 1, characterized in that: The output shaft of the motor is a first worm gear; the gear set includes a first spur gear, a second spur gear, a first worm wheel, and a second worm gear; the shaft of the first spur gear passes through the housing and is coaxially connected to the massage head; the second spur gear is coaxially connected to the first worm wheel, and the second spur gear meshes with the first spur gear, and the first worm wheel meshes with the output shaft; the second worm gear is coaxially connected to the shaft of the first spur gear or the shaft of the second spur gear, and is drively connected to the second worm wheel located on the inner end face of the eccentric wheel.

3. The massage head adjustment mechanism as described in claim 2, characterized in that: The first spur gear and the second spur gear are respectively disposed on both sides of the output shaft of the motor; the second worm gear is coaxially connected to the shaft of the first spur gear.

4. The massage head adjustment mechanism as described in claim 2, characterized in that: It also includes a gearbox cover that fits over the gearbox body; the shaft of the first spur gear extends through the gearbox cover.

5. The massage head adjustment mechanism as described in claim 4, characterized in that: The gearbox, gear set, massage head and eccentric wheel are provided at corresponding positions at both ends of the motor.

6. The massage head adjustment mechanism as described in claim 5, characterized in that: A synchronizing gear seat is also provided between the two gearbox covers. A synchronizing gear is provided inside the synchronizing gear seat, and a first rack and a second rack that mesh with the synchronizing gear are respectively provided on one side of the gearbox body and the other side of the gearbox cover.

7. The massage head adjustment mechanism as described in claim 1, characterized in that: The outer shell includes a detachably connected upper shell and a lower shell; the upper shell has a perforation corresponding to the position of the massage head and a heat dissipation hole corresponding to the position of the motor; the lower shell has the waist hole and several mounting slots.

8. The massage head adjustment mechanism as described in claim 1, characterized in that: The gearbox housing is provided with a bearing for the rotational engagement of the output shaft, and a limiting ring for axially limiting the output shaft.

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