A back massager

Abstract

The utility model provides a kind of back massager, including bottom disc and mobile seat, bottom plate both sides install rack, mobile seat includes shell, rack can slidably pass through shell, shell installs double -end motor and two groups of gear sets, the two rotating shafts of double -end motor are respectively installed worm, one side worm is engaged with a group of gear sets, two groups of gear sets are engaged with two racks respectively, the rotating shaft of gear set is installed massage head.The utility model's double -end motor is driven mobile seat to move up and down along the rack of both sides by two groups of gear sets, simultaneously drive the rotation of massage head to realize the massage to back, both sides rack drive more stable, compared with the back massager of existing single side driving movement mode, both sides gear drive stress is more uniform, avoid gear overload damage, improve overall service life, and open type design is convenient to overhaul, improve practicability.

Description

Technical Field

[0001] This utility model relates to the field of massage products, and more specifically, to a back massager. Background Technology

[0002] With the continuous improvement of people's living standards, the demand for various consumer goods has become enormous, creating favorable conditions for the booming development of the consumer goods market. Among these, massage devices are a type of consumer product within the massage industry. Massage devices are a new generation of health care equipment developed based on physics, bionics, bioelectricity, traditional Chinese medicine, and years of clinical practice. When using a massage device to massage the body, it can relax muscles, soothe nerves, promote blood circulation, enhance cell metabolism, and improve skin elasticity. It can also relieve fatigue, reduce various pains, relax the body, reduce stress, and reduce wrinkles. Therefore, massage devices are increasingly favored by people. Existing patent: A circulating back massager, patent number: CN202446458U, discloses that with the cooperation of a driver and a circulation controller, the moving seat is driven to move cyclically in any segment of the moving area while simultaneously driving the massage head to rotate, so as to achieve the effect of massaging the back. However, on the one hand, the back massager of this patent is driven by a single-sided gear, and the back massage has high resistance, which makes the single-sided gear prone to overload and damage during use; on the other hand, the back massager of this patent uses the method of installing and wrapping the entire driver and moving seat in the seat body, which makes maintenance inconvenient. Utility Model Content

[0003] This utility model provides a back massager, which aims to solve the technical problems of existing back massagers, such as easy overload damage due to single-sided drive and inconvenient maintenance.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a back massager, comprising a chassis and a movable base, racks mounted on both sides of the chassis, the movable base comprising a housing, the racks slidably passing through the housing, a dual-head motor and two sets of gears mounted on the housing, worm gears mounted on the two shafts of the dual-head motor, one worm gear meshing with one set of gears, the two sets of gears meshing with the two racks respectively, and massage heads mounted on the shafts of the gear sets.

[0005] Furthermore, the gear set includes a first large gear, a first small gear, a second large gear, and a second small gear. The first large gear and the first small gear are coaxial, as are the second large gear and the second small gear. The first large gear meshes with the worm gear, the first small gear meshes with the second large gear, and the second small gear meshes with the rack.

[0006] Furthermore, the shaft of the second large gear is mounted with a connecting block, the connecting block is mounted with a crossbar, and the massage head is detachably mounted on the crossbar.

[0007] Furthermore, a base is further installed at the bottom of the chassis, and a controller and a control switch are installed on one side of the base. The control switch is point-connected to the controller, and the controller is electrically connected to the dual-head motor.

[0008] Furthermore, a guide groove is formed on the side of the housing near the chassis, and locking blocks are provided on both sides of the guide groove. The rack passes through the guide groove, and the locking blocks restrict the rack from leaving the guide groove.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] This utility model discloses a back massager with a simple and ingenious design, including a base and a movable seat. Racks are mounted on both sides of the base. The movable seat includes a housing through which the racks slidably pass. A dual-head motor and two sets of gears are mounted on the housing. Worms are mounted on the two shafts of the dual-head motor. One worm meshes with one set of gears, and the two sets of gears mesh with the two racks respectively. Massage heads are mounted on the shafts of the gear sets. The dual-head motor of this utility model drives the movable seat up and down along the racks on both sides through the two sets of gears, simultaneously rotating the massage heads to achieve back massage. Compared to existing back massagers where the gears on both sides drive the force more evenly, it avoids gear overload damage, increases the overall service life, and the open design facilitates maintenance, improving practicality. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of a back massager according to the present invention;

[0013] Figure 2 This is an exploded structural diagram of a back massager according to the present invention;

[0014] Figure 3 This is an exploded structural diagram of the shell of a back massager according to this utility model.

[0015] Explanation of main component symbols

[0016] 10. Base; 101. Controller; 102. Control switch;

[0017] 20. Chassis; 201. Rack; 202. Housing; 203. Dual-head motor; 2031. Worm gear; 204. First large gear; 205. First small gear; 206. Second large gear; 207. Second small gear; 208. Crossbar; 209. Connecting block; 2010. Massage head. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] Example

[0022] Reference Figure 1-3As shown, this utility model discloses a back massager, including a chassis 20 and a movable base. Racks 201 are mounted on both sides of the chassis. The movable base includes a housing 202, through which the racks 201 slidably pass. Specifically, a guide groove is formed on the side of the housing 202 near the chassis 20, and locking blocks are provided on both sides of the guide groove. The racks 201 pass through the guide groove, and the locking blocks prevent the racks 201 from leaving the guide groove. The housing 202 can move along the two racks 201 without falling out. The open chassis mounting design facilitates maintenance.

[0023] Reference Figure 1-3 As shown, the housing 202 is equipped with a dual-head motor 203 and two sets of gears. Worms 2031 are mounted on the two shafts of the dual-head motor 203. One worm 2031 meshes with one set of gears, and the two sets of gears mesh with two racks 201 respectively. Specifically, the gear sets include a first large gear 204, a first small gear 205, a second large gear 206, and a second small gear 207. The first large gear 204 and the first small gear 205 are coaxial, as are the second large gear 206 and the second small gear 207. The first large gear 204 meshes with the worm 2031, the first small gear 205 meshes with the second large gear 206, and the second small gear 207 meshes with the rack 201. The dual-head motor 203 drives the rotation of the worm 2031, and the worm 2031 drives the rotation of the rack 201. The rotation of a large gear 204 drives the rotation of a small gear 205, which in turn drives the rotation of a large gear 206, which in turn drives the rotation of a small gear 207. The small gear 207 meshes with a rack 201, enabling movement along the rack 201. The symmetrically arranged gear sets on both sides correspond to the two racks 201, allowing the housing 202 to move along the two racks 201. Compared with the existing single-sided force situation, this structure is more stable and improves service life.

[0024] Reference Figure 1-3 As shown, the massage head 2010 is mounted on the shaft of the gear set. Specifically, the shaft of the second large gear 206 is mounted on the connecting block 209, and the connecting block 209 is mounted on the crossbar 208. The massage head 2010 is detachably mounted on the crossbar 208. The rotation of the second large gear 206 drives the rotation of its shaft, which in turn drives the rotation of the crossbar 208 through the connecting block 209. The massage head 2010 is mounted on the crossbar 208, so that the massage head 2010 rotates while the moving seat moves, thus massaging the back of the human body.

[0025] Reference Figure 1 As shown, a base 10 is further installed at the bottom of the chassis 20. A controller 101 and a control switch 102 are installed on one side of the base 10. The control switch 102 is connected to the controller 101, and the controller 101 is electrically connected to the dual-head motor 203. The base 10 is convenient to place on the chair, increasing the contact area to prevent tipping. The control switch 102 allows the user to easily adjust and use it.

[0026] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A back massager, characterized in that; The device includes a chassis and a movable base. Racks are installed on both sides of the chassis. The movable base includes a housing. The racks slide through the housing. A dual-head motor and two sets of gears are installed in the housing. Worms are installed on the two shafts of the dual-head motor. One worm meshes with one set of gears. The two sets of gears mesh with the two racks respectively. Massage heads are installed on the shafts of the gear sets.

2. The back massager of claim 1, wherein: The gear set includes a first large gear, a first small gear, a second large gear, and a second small gear. The first large gear and the first small gear are coaxial, as are the second large gear and the second small gear. The first large gear meshes with the worm gear, the first small gear meshes with the second large gear, and the second small gear meshes with the rack.

3. The back massager according to claim 2, characterized in that: The second large gear has a shaft mounting connecting block, the connecting block has a mounting crossbar, and the massage head is detachably mounted on the crossbar.

4. The back massager according to claim 1, characterized in that: A base is further installed at the bottom of the chassis, and a controller and a control switch are installed on one side of the base. The control switch is point-connected to the controller, and the controller is electrically connected to the dual-head motor.

5. The back massager according to claim 1, characterized in that: The housing has a guide groove on the side near the chassis, and locking blocks are provided on both sides of the guide groove. The rack passes through the guide groove, and the locking blocks prevent the rack from leaving the guide groove.

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