Massage device

Abstract

A massage device includes a base, a drive unit, and a transmission unit. The drive unit is coupled to the base. The transmission unit is disposed at one side of the base. The drive unit includes a drive member to drive a rotary shaft for driving massage members. One end of the rotary shaft is provided with a unidirectional bearing and a first bevel gear. The unidirectional bearing is able to control the rotation of the first bevel gear. The transmission unit includes two positioning blocks and a worm shaft connected between the two positioning blocks. The worm shaft is provided with a second bevel gear and a movable member thereon. The first bevel gear meshes with the second bevel gear. When the first bevel gear is rotated, the second bevel gear is driven to link other parts so that the drive unit can slide on the base.

Claims

1. A massage device comprising: a base including a first positioning plate, a second positioning plate, and a pair of notches formed at upper and lower ends of the base, a drive unit including a main seat, an engaging recess arranged at a bottom of the main seat, a drive member provided on the main seat, a rotary shaft penetrating the drive member, a pair of massage members each rotatably mounted on a respective end of the rotary shaft in an eccentric manner, massage bodies ends mounted on opposed ends of each massage member, and a unidirectional bearing and a first bevel gear mounted on one end of the rotary shaft, and a transmission unit including two positioning blocks, a worm shaft connected between the two positioning blocks and formed with a cross screw thread thereon, a second bevel gear mounted on the worm shaft, a movable member mounted on the worm shaft and including a linkage member, an accommodation groove defined between the second bevel gear and the movable member, a fixed seat and an upper cover connected to the accommodation groove, the fixed seat being secured on the main seat, the first bevel gear meshing with the second bevel gear, and the linkage member being engaged with the cross screw thread, wherein the linkage member is biased by a spring, and wherein the spring abuts against a positioning piece fixed to the movable member with a screw.

2. The massage device as claimed in claim 1, wherein the engaging recess at the bottom of the main seat is engaged with the first positioning plate, one side of the main seat is arranged against the second positioning plate, and the drive member is configured to slide up and down on the base.

3. The massage device as claimed in claim 1, further comprising a baffle plate provided above the drive member of the drive unit, wherein upper and lower ends of the baffle plate are positioned at the pair of notches of the base.

4. The massage device as claimed in claim 1, wherein the linkage member meshes with the cross screw thread of the worm shaft, so that the movable member is guided to move forward through the linkage member meshing with the cross screw thread while the movable member is rotated along with the second bevel gear, when the linkage member is moved to an uppermost or lowermost end of the cross screw thread, the linkage member is returned to keep going down or up through the uppermost or lowermost end of the cross screw thread.

5. The massage device as claimed in claim 1, wherein the unidirectional bearing is driven in one direction only and another direction is idling, when the drive unit is turned in one direction, the main seat is moved along the worm shaft, when the drive unit is turned in the other direction, a linkage relationship between the rotary shaft and the massage members is interrupted.

6. The massage device as claimed in claim 1, wherein the fixed seat has a concave upper end, the concave upper end of the fixed seat is embedded in the accommodation groove, and the upper cover is disposed at an upper end of the accommodation groove and secured on the fixed seat.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a schematic view of the present invention mounted on a massage chair;

(2) FIG. 2 is a perspective view of the present invention;

(3) FIG. 3 is an exploded view of the present invention;

(4) FIG. 4 is a partial exploded view of the present invention;

(5) FIG. 5 is a top view of the present invention;

(6) FIG. 6 is a schematic view of the present invention, showing that the drive unit slides on the base for performing a shiatsu massage and a kneading massage;

(7) FIG. 7 is a schematic view of the present invention, showing that the drive unit is kept at a certain position for performing a shiatsu massage and a kneading massage;

(8) FIG. 8 is a schematic view of the present invention, showing that the linkage member is moved up along the cross screw thread; and

(9) FIG. 9 is a schematic view of the present invention, showing that the linkage member is moved down along the cross screw thread.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

(10) Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings.

(11) As shown in FIG. 1 to FIG. 4, a massage device in accordance with an embodiment of the present invention comprises a base (10), a drive unit (20), and a transmission unit (30).

(12) The base (10) includes a first positioning plate (11) and a second positioning plate (12) thereon. Upper and lower ends of the base (10) are formed with a pair of notches (13).

(13) The drive unit (20) includes a main seat (21). The bottom of the main seat (21) has an engaging recess (210). A drive member (22) is provided on the main seat (21). The drive member (22) is provided with a rotary shaft (220) penetrating the drive member (22). Two ends of the rotary shaft (220) are inserted through pivot holes (230) of a pair of massage members (23) in an eccentric manner, so that the massage members (23) can be properly deflected and turned about the pivot holes (230) respectively. One of the two ends of the rotary shaft (220) is further connected with a unidirectional bearing (24) and a first bevel gear (25). The unidirectional bearing (24) includes an inner ring (240) and an outer ring (241) to receive the inner ring (240) therein. The inner ring (240) is threadedly connected to the rotary shaft (220). The inner ring (240) is rotated only in one direction relative to the outer ring (241). The first bevel gear (25) has an accommodation space (250) therein. The outer ring (241) is secured in the accommodation space (250) so that the first bevel gear (25) is rotated together with the outer ring (241). Upper and lower ends of each massage member (23) are provided with massage bodies (231), respectively. The transmission unit (30) includes two positioning blocks (31) and a worm shaft (32) connected between the two positioning blocks (31). The worm shaft (32) is formed with a cross screw thread (320) thereon. The worm shaft (32) is provided with a second bevel gear (33) and a movable member (34) thereon. The movable member (34) is driven by the second bevel gear (33). The movable member (34) includes a linkage member (340) therein. The bottom of the linkage member (340) is biased by a spring (341). The spring (341) abuts against a positioning piece (342). The positioning piece (342) is fixed to the movable member (34) with a screw (343).

(14) The assembly of the present invention is as shown in FIG. 3. The engaging recess (210) at the bottom of the main seat (21) is engaged with the first positioning plate (11) and one side of the main seat (21) is against the second positioning plate (12), such that the drive unit (20) can slide up and down on the base (10). The transmission unit (30) is secured on one side of the base (10). An accommodation groove (35) is defined between the second bevel gear (33) and the movable member (34). A fixed seat (36) having a concave upper end is secured on the main seat (21). The concave upper end of the fixed seat (36) is embedded in the accommodation groove (35). An upper cover (360) is disposed at an upper end of the accommodation groove (35) and secured on the fixed seat (36). The first bevel gear (25) meshes with the second bevel gear (33) to form a linkage relationship. The linkage member (340) inside the movable member (34) is engaged with the cross screw thread (320). A baffle plate (40) is provided above the drive member (22) of the drive unit (20). Upper and lower ends of the baffle plate (40) are positioned at the pair of notches (13) of the base (10).

(15) When in use, as shown in FIG. 5, the drive member (22) drives the rotary shaft (220) to rotate clockwise or counterclockwise. The rotary shaft (220) is connected with the massage members (23). The rotary shaft (220) is eccentrically connected with the pivot holes (230) of the massage members (23) so that the massage members (23) are eccentrically rotated about the pivot holes (230). The upper and lower ends of each massage member (23) are provided with the massage bodies (231). The massage bodies (231) are swung in the same arc with the swing of the massage members (23) to provide a shiatsu massage and a kneading massage.

(16) FIG. 6 illustrates the operation mode of the massage device in a clockwise rotation. When the rotary shaft (220) is rotated clockwise, the first bevel gear (25) meshing with the unidirectional bearing (24) is driven to drive the second bevel gear (33) meshing with the first bevel gear (25). The movable member (34) is turned along with the rotation of the second bevel gear (33). The linkage member (340) inside the movable member (34) meshes with the cross screw thread (320) of the worm shaft (32), so that the movable member (34) is guided to move forward through the linkage member (340) meshing with the cross screw thread (320) while the movable member (34) is turned along with the second bevel gear (33). When the linkage member (340) is moved to the uppermost or lowermost end of the cross screw thread (320), the linkage member (340) is returned to keep going down or up through the uppermost or lowermost end of the cross screw thread (320). The fixed seat (36) and the upper cover (360) are located between the second bevel gear (33) and the movable member (34). The fixed seat (36) is fixed to the main seat (21). When the second bevel gear (33) and the movable member (34) are moved simultaneously, the fixed seat (36) is brought to move up and down so as to move the main seat (21), such that the drive unit (20) is reciprocated on the worm shaft (32) (referring to FIGS. 8 and 9) to obtain a movable massage.

(17) FIG. 7 illustrates the operation mode of the massage device in a counterclockwise rotation. When the main seat (21) with the fixed seat (26) is brought to a certain position, the drive member (22) is switched to turn the rotary shaft (220) counterclockwise. The first bevel gear (25) coupled with the unidirectional bearing (24) is not driven because the unidirectional bearing (24) is idling. When the rotary shaft (220) is rotated counterclockwise, the massage members (23) are continuously operated, but the first bevel gear (25) is not driven. When the first bevel gear (25) is not driven, the second bevel gear (33), the movable member (34), and the fixed seat (36), arranged in sequence behind the first bevel gear (25), stop running to provide a fixed-point massage.

(18) The massage device in accordance with the aforesaid embodiment has the following effects. The drive member (22) is used to rotate the rotary shaft (220) clockwise and counterclockwise. The unidirectional bearing (24) is driven in one direction only while the other direction is idling. When the unidirectional bearing (24) is idling, the linkage relationship between the rotary shaft (220) and the massage members (23) is interrupted. When the first and second bevel gears (25, 33) are driven to turn, the movable member (34), the fixed seat (36) and the upper cover (360), arranged in sequence behind the second bevel gear (33), are linked to move. Because the fixed seat (36) is disposed on the main seat (21), the entire drive unit (20) is moved by means of the traction of the worm shaft (32). Thereby, a movable massage or a fixed-point massage can be obtained by using the drive unit (20) only. It is only necessary to use the drive member (22) to achieve the same effect as the prior art. This is not only more cost-effective but also more competitive in industry.

(19) Although particular embodiments of the present invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the present invention. Accordingly, the present invention is not to be limited except as by the appended claims.