Transmission structure of a massage device

Abstract

This utility model discloses a transmission structure for a massager, which is located between a motor and a massage base. It includes a transmission shaft and a motor shaft linked to the motor; a first bearing mounted on the massage base and sleeved on the transmission shaft; a second bearing mounted on a connecting shell and sleeved on the transmission shaft; and an eccentric block mounted on the transmission shaft and positioned between the first and second bearings. Both the first and second bearings mounted on the transmission shaft are single-row bearings, with mature and stable manufacturing processes, low defect rates, and low purchase costs. They also meet the high-speed rotation requirements of the transmission shaft and have lower requirements for the mold precision of the massage base and connecting shell. Furthermore, by placing a rubber gasket between the massage base and the connecting shell, the eccentric vibration generated by the transmission shaft and the eccentric block can be converted into horizontal vibration of the massage base, thereby causing the second massage head mounted on the upper end of the massage base to vibrate. Combined with the first massage head, this provides more massage functions.

Description

Technical Field

[0001] This utility model relates to the field of health massage instruments, and in particular to a transmission structure for a massage instrument. Background Technology

[0002] As living standards improve, people have higher and higher requirements for a healthy life, leading to the invention of various massage devices. These devices use physical motion stimulation at different frequencies to relax and massage human muscles. Because they are convenient to use and have good massage effects, they are widely recognized and used.

[0003] Currently, handheld massagers are widely popular due to their ease of use and portability. These massagers contain a motor and battery. The motor shaft is fitted with a drive shaft, which has an eccentric block. The motor drives the drive shaft and eccentric block to rotate, generating eccentric vibration. This vibration is transmitted to the massage base through a fixed bearing and a top bearing, causing the massage base to vibrate at high frequency. This high-frequency vibration of the massage head, fixed to the massage base, also provides a massage effect. In practical applications, such as the massager disclosed in Chinese Patent 202311605598.2, two sets of bearings are used to improve the rotational stability of the drive shaft, as it needs to rotate at high speed. However, the lower bearing uses a double-row bearing structure, which has a high defect rate during production. The two rows of bearings may not fit together perfectly, making them unsuitable for installation on the drive shaft. This results in a high cost for qualified double-row bearings. In addition, double-row bearings are extremely sensitive to installation errors during installation. Otherwise, it will lead to increased friction between the bearing and the drive shaft. This requires that the housing used to install the double-row bearing and the placement of the drive shaft be very precise, which places high demands on the mold making of the parts. Utility Model Content

[0004] To solve the above problems, this utility model proposes a transmission structure for a massager.

[0005] The technical solution adopted by this utility model is: a transmission structure for a massager, wherein the massager comprises, from bottom to top, a shell, a connecting shell, and a massage base. A battery and a motor are disposed inside the shell, the battery supplying power to the motor. A plurality of spaced-apart first massage heads are arranged circumferentially on the outer wall of the massage base. The transmission structure is disposed between the motor and the massage base, and includes: The drive shaft is directly or indirectly linked to the motor shaft of the motor and extends in the vertical direction; The first bearing is mounted on the massage base and sleeved on the drive shaft; The second bearing is mounted on the connecting housing and sleeved on the drive shaft; An eccentric block is mounted on the drive shaft and positioned between the first bearing and the second bearing; Both the first bearing and the second bearing are single-row bearings.

[0006] Several alternative methods are provided below, but they are not intended as additional limitations on the overall solution above. They are merely further additions or optimizations. Provided there are no technical or logical contradictions, each alternative method can be combined individually with respect to the overall solution above, or multiple alternative methods can be combined with each other.

[0007] Preferably, the massage base is provided with a first annular groove for the first bearing to be matched and installed, and the connecting shell is provided with a second annular groove for the second bearing to be matched and installed.

[0008] Preferably, a support ring is fixedly provided on the drive shaft, the eccentric block is fixedly sleeved on the drive shaft, and the lower end of the eccentric block abuts against the support ring.

[0009] Preferably, the transmission structure further includes a rubber washer, the rubber washer including a mounting base and a plurality of inserts extending upward from the upper edge of the mounting base, the plurality of inserts being arranged circumferentially around the mounting base, the connecting shell having a mounting groove for mounting the mounting base, the massage base having a slot for inserting the inserts, and the upper end of the massage base having a second massage head.

[0010] Preferably, a fan blade is fixedly mounted on the motor shaft of the motor, a connecting block that is fitted to the fan blade is provided at the lower end of the transmission shaft, and a plurality of heat dissipation holes are provided on the outer casing.

[0011] Preferably, the battery is located below the motor, and the housing also includes an integrated circuit board located below the battery. The lower end of the integrated circuit board has a charging port and a power button, both of which extend to the outside of the housing.

[0012] Preferably, the outer wall of the massage base is provided with at least one connector, and the first massage head is detachably mounted on the connector.

[0013] Preferably, the connector head is provided with at least one set of limiting structures, the limiting structures including a first guide groove and a second guide groove that are interconnected, wherein the first guide groove extends radially along the connector head, the second guide groove extends circumferentially along the connector head, and one side of the massage head is provided with a sleeve portion for fitting onto the outside of the connector head, the sleeve portion is provided with at least one limiting block, the sleeve portion has a locked state and an unlocked state, in the locked state, the limiting block is disposed at one end of the second guide groove and abuts against the inner wall of the second guide groove extending circumferentially; in the unlocked state, the limiting block enters the first guide groove from the second guide groove.

[0014] Preferably, the sleeve portion is provided with a sleeve hole for sleeved with the connector, and the limiting block is disposed on the inner wall of the end of the sleeve hole.

[0015] More preferably, the outer wall of the sleeve portion is provided with an opening extending radially therefrom, and the limiting block is disposed on the extension path of the opening.

[0016] Compared with the prior art, this utility model has the following beneficial effects: 1. The first and second bearings installed on the drive shaft are both single-row bearings, which have a stable structure, mature and stable production process, low defect rate, low purchase cost, and can also meet the high-speed rotation of the drive shaft, with lower requirements for the mold opening precision of the massage base and connecting shell. 2. By setting a rubber gasket between the massage base and the connecting shell, the eccentric vibration generated by the drive shaft and the eccentric block can be converted into the horizontal vibration of the massage base, which in turn can cause the second massage head installed on the upper end of the massage base to vibrate. 1. When the massage head becomes old, or when other massage functions are needed, the massage head can be replaced as needed, and replacement is convenient. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is an exploded view from the top of one embodiment of the present application, showing the connecting shell, transmission structure, and massage base. Figure 2 This is an exploded view from below of the connecting shell, transmission structure, and massage base in one embodiment of this application; Figure 3This is an exploded view of the transmission structure in one embodiment of this application; Figure 4 This is an overall structural diagram of the massager from the top view in one embodiment of this application; Figure 5 This is a lower-view overall structural diagram of the massager involved in one embodiment of this application; Figure 6 This is a cross-sectional structural diagram of a massager involved in one embodiment of this application; Figure 7 This is an exploded view of the massager from the top side in one embodiment of this application. Figure 8 This is an exploded view of the massager from the lower side in one embodiment of this application. Figure 9 This is a schematic diagram of the upper view structure of the massage base in one embodiment of this application; Figure 10 This is a schematic diagram of the lower side view of the massage base in one embodiment of this application; Figure 11 This is a schematic diagram of the structure of the first massage head in one embodiment of this application; Figure 12 This is a schematic diagram of the connecting shell structure in one embodiment of this application.

[0019] The components in the attached diagram are labeled as follows: 1-Massage base, 11-Connector, 12-First annular groove, 13-Slot, 111-First guide groove, 112-Second guide groove, 2-First massage head, 21-Sleeve part, 211-Sleeve hole, 212-Limiting block, 213-Opening, 3-Outer shell, 31-Heat dissipation hole, 4-Battery, 5-Motor, 6-Fan blade, 7-Rubber gasket, 71-Mounting base, 72-Insertion strip, 8-Connecting shell, 81-Mounting groove, 82-Second annular groove, 9-Transmission assembly, 91-Connecting block, 92-Transmission shaft, 921-Support ring, 93-Eccentric block, 94-First bearing, 95-Second bearing, 10-Second massage head.

[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0023] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0024] Detailed implementation plan: See below Figures 1-12 This utility model relates to a transmission structure for a massager. The massager, from bottom to top, includes a housing 3, a connecting housing 8, and a massage base 1. The housing 3 contains a battery 4 and a motor 5. The battery 4 supplies power to the motor 5. The outer wall of the massage base 1 has several spaced-apart first massage heads 2. The transmission structure is located between the motor 5 and the massage base 1 and includes: The drive shaft 92 is directly or indirectly linked to the motor shaft of the motor 5 and extends in the vertical direction; The first bearing 94 is mounted on the massage base 1 and sleeved on the drive shaft 92; The second bearing 95 is mounted on the connecting housing 8 and sleeved on the drive shaft 92; An eccentric block 93 is mounted on the drive shaft 92 and is positioned between the first bearing 94 and the second bearing 95. Both the first bearing 94 and the second bearing 95 are single-row bearings.

[0025] As a preferred embodiment of this example, please refer to Figure 2 , Figure 10 and Figure 12 As can be seen, the massage base 1 is provided with a first annular groove 12 for the first bearing 94 to be matched and installed, and the connecting shell 8 is provided with a second annular groove 82 for the second bearing 95 to be matched and installed.

[0026] Then, please see Figure 3 As can be seen, in this embodiment, a support ring 921 is fixedly provided on the transmission shaft 92, and an eccentric block 93 is fixedly sleeved on the transmission shaft 92, with the lower end of the eccentric block 93 abutting against the support ring 921.

[0027] Here, after the eccentric block 93 is fitted onto the drive shaft 92, it needs to be locked and fixed onto the drive shaft 92 with locking screws. The support ring 921 can support the bottom of the eccentric block 93 to further fix the position of the eccentric block 93.

[0028] Next, please refer to Figure 1 , Figure 2 and Figure 10 As can be seen, in this embodiment, the transmission structure also includes a rubber washer 7, which includes a mounting base 71 and a plurality of inserts 72 extending upward from the upper edge of the mounting base 71. The plurality of inserts 72 are arranged around the circumference of the mounting base 71. The connecting shell 8 is provided with a mounting groove 81 for mounting the mounting base 71. The massage base 1 is provided with a slot 13 for inserting the inserts 72. The upper end of the massage base 1 is provided with a second massage head 10.

[0029] Here, by setting a rubber gasket 7 between the massage base 1 and the connecting shell 8, the eccentric vibration generated by the transmission shaft 92 and the eccentric block 93 can be converted into the horizontal vibration of the massage base 1, which in turn can cause the second massage head 10 installed on the upper end of the massage base 1 to vibrate.

[0030] In addition, since several inserts 72 are arranged at uniform intervals around the circumference of the mounting base 71, it can be ensured that the eccentric vibration generated by the drive shaft 92 and the eccentric block 93 can be uniformly transmitted to each position of the massage base 1.

[0031] Please see Figure 3 , Figure 6 and Figure 8 As can be seen, in this embodiment, a fan blade 6 is fixedly installed on the motor shaft of the motor 5, a connecting block 91 that is connected to the fan blade 6 is provided at the lower end of the transmission shaft 92, and a number of heat dissipation holes 31 are provided on the outer shell 3.

[0032] Here, the fan blade 6 and the heat dissipation hole 31 are designed to reduce the internal temperature of the massager, especially the motor shaft and transmission shaft 92, so as to meet the long-term high-speed rotation of the transmission shaft 92 and prevent the product's service life from being reduced due to excessive temperature.

[0033] In addition, please see Figures 6-8 As can be seen, in this embodiment, the battery 4 is located below the motor 5, and the housing 3 is also provided with an integrated circuit board located below the battery 4. The lower end of the integrated circuit board is provided with a charging port and a power button, both of which extend to the outside of the housing 3.

[0034] Regarding the structure of battery 4, motor 5, and integrated circuit board, please refer to Chinese utility model patent with patent number 202311605598.2 and patent name "A Massager". This is prior art and will not be explained in detail here.

[0035] In the technical solution disclosed in the aforementioned patent, the second bearing 95 uses a double-row bearing. In this embodiment, replacing it with a single-row bearing can effectively reduce the purchase cost of the bearing and will not significantly affect the rotational stability of the transmission shaft 92. Furthermore, this design reduces the injection molding precision requirements for the connecting shell 8 during actual processing and assembly, thus lowering the assembly difficulty of the massager.

[0036] Then, please see Figure 4 As can be seen, in this embodiment, at least one connector 11 is provided on the outer wall of the massage base 1, and the first massage head 2 is detachably installed on the connector 11.

[0037] Please continue reading. Figures 9-12 In this embodiment, the connector 11 is provided with at least one set of limiting structures, including a first guide groove 111 and a second guide groove 112 that are interconnected. The first guide groove 111 extends radially along the connector 11, and the second guide groove 112 extends circumferentially along the connector 11. One side of the massage head is provided with a sleeve portion 21 for fitting and sleeved on the outside of the connector 11. The sleeve portion 21 is provided with at least one limiting block 212. The sleeve portion 21 has a locked state and an unlocked state. In the locked state, the limiting block 212 is disposed at one end of the second guide groove 112 and abuts against the inner wall of the second guide groove 112 extending circumferentially. In the unlocked state, the limiting block 212 enters the first guide groove 111 from the second guide groove 112.

[0038] In addition, in this embodiment, the sleeve portion 21 is provided with a sleeve hole 211 for sleeve connection of the connector 11, and the limiting block 212 is provided on the inner wall of the end of the sleeve hole 211.

[0039] The assembly method and working principle of the socket 21 and the connector 11 are explained below: When switching to the locked state, firstly, the limiting block 212 needs to be aligned with the first guide groove 111 and pushed inward along the first guide groove 111 until it enters the second guide groove 112; then, according to the arrangement direction of the second guide groove 112, the first massage head 2 is rotated clockwise or counterclockwise. At this time, the limiting block 212 is moved along the extension direction of the second guide groove 112 to the end of the second guide groove 112, and the installation is completed. After installation, both the inner and outer ends of the limiting block 212 will abut against the inner wall of the second guide groove 112 extending circumferentially, thereby restricting the movement of the limiting block 212 along the radial direction of the connector 11, and the first massage head 2 will not detach from the connector 11; When it is necessary to switch to the unlocked state, firstly, rotate the first massage head 2 clockwise or counterclockwise according to the arrangement direction of the second guide groove 112. At this time, the limiting block 212 moves from the end of the second guide groove 112 to the position directly opposite the first guide groove 111 along the extension direction of the second guide groove 112. Then, pull the first massage head 2 outward. At this time, the limiting block 212 will move outward along the first guide groove 111 until it is disengaged from the first guide groove 111, and the unlocking is completed.

[0040] Next, please refer to Figure 11 As can be seen, in this embodiment, the outer wall of the sleeve portion 21 is provided with an opening 213 extending radially therefrom, and the limiting block 212 is disposed on the extension path of the opening 213.

[0041] Here, by providing an opening 213 on the outer wall of the sleeve portion 21 and aligning the opening 213 with the limiting block 212, since the limiting block 212 is located on the inner wall of the end of the sleeve hole 211, the position of the limiting block 212 cannot be seen during the installation process. The position of the limiting block 212 can be determined by the position of the opening 213, which makes it easier to push the limiting block 212 into the first guide groove 111.

[0042] In practical applications, other structures can also be used for the disassembly and connection between the first massage head 2 and the connector 11.

[0043] The transmission structure of a massager according to this utility model is described above as a preferred embodiment of this utility model and is not intended to limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A transmission structure of a massage instrument, the massage instrument comprising, from bottom to top, a shell, a connecting shell and a massage base in sequence, a battery and a motor are arranged inside the shell, the battery is used for power supply of the motor, and a plurality of first massage heads are arranged on the outer wall of the massage base in a circumferential direction and are spaced from each other, characterized in that, The transmission structure is disposed between the motor and the massage base, and includes: The drive shaft is directly or indirectly linked to the motor shaft of the motor and extends in the vertical direction; The first bearing is mounted on the massage base and sleeved on the drive shaft; The second bearing is mounted on the connecting housing and sleeved on the drive shaft; An eccentric block is mounted on the drive shaft and positioned between the first bearing and the second bearing; Both the first bearing and the second bearing are single-row bearings.

2. The transmission structure of a massager according to claim 1, characterized in that, The massage base is provided with a first annular groove for the first bearing to be installed, and the connecting shell is provided with a second annular groove for the second bearing to be installed.

3. The transmission structure of a massager according to claim 2, characterized in that, A support ring is fixedly provided on the drive shaft, and the eccentric block is fixedly sleeved on the drive shaft, with the lower end of the eccentric block abutting against the support ring.

4. The transmission structure of a massager according to any one of claims 1-3, characterized in that, The transmission structure also includes a rubber washer, which includes a mounting base and a plurality of inserts extending upward from the upper edge of the mounting base. The plurality of inserts are arranged around the circumference of the mounting base. The connecting shell is provided with a mounting groove for mounting the mounting base. The massage base is provided with a slot for inserting the inserts. The upper end of the massage base is provided with a second massage head.

5. The transmission structure of a massager according to claim 4, characterized in that, The motor shaft is fixedly mounted with a fan blade, the lower end of the transmission shaft is provided with a connecting block that is connected to the fan blade, and the outer casing is provided with several heat dissipation holes.

6. The transmission structure of a massager according to claim 1, characterized in that, The battery is located below the motor. An integrated circuit board is also provided in the housing. The integrated circuit board is located below the battery. A charging port and a power button are provided at the lower end of the integrated circuit board. Both the charging port and the power button extend to the outside of the housing.

7. The transmission structure of a massager according to claim 1, characterized in that, At least one connector is provided on the outer wall of the massage base, and the first massage head is detachably installed on the connector.

8. The transmission structure of a massager according to claim 7, characterized in that, The connector head is provided with at least one set of limiting structures, each limiting structure including a first guide groove and a second guide groove that are interconnected. The first guide groove extends radially along the connector head, and the second guide groove extends circumferentially along the connector head. One side of the massage head is provided with a sleeve portion for fitting onto the outside of the connector head. The sleeve portion is provided with at least one limiting block. The sleeve portion has a locked state and an unlocked state. In the locked state, the limiting block is disposed at one end of the second guide groove and abuts against the inner wall of the second guide groove extending circumferentially. In the unlocked state, the limiting block enters the first guide groove from the second guide groove.

9. The transmission structure of a massager according to claim 8, characterized in that, The sleeve portion is provided with a sleeve hole for fitting the connector head, and the limiting block is disposed on the inner wall of the end of the sleeve hole.

10. The transmission structure of a massager according to claim 9, characterized in that, The outer wall of the socket is provided with an opening extending radially therefrom, and the limiting block is disposed on the extension path of the opening.

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