Knocking transmission mechanism of massage machine core

Abstract

The utility model provides a knocking transmission mechanism of a massage machine core, which comprises a knocking shaft connected with a driving mechanism, the end part of the knocking shaft is detachably connected with an eccentric block, the eccentric block consists of a sleeving part and an eccentric shaft which are integrally formed, the sleeving part is arranged at the end part of the knocking shaft, the sleeving part is connected with the eccentric shaft, and the eccentric shaft is connected with the driving mechanism. The axis of the eccentric shaft and the axis of the knocking shaft are eccentrically arranged, and the eccentric shaft is connected with a transmission hinge module. The eccentric blocks are independently detached from the knocking shaft, are subjected to powder metallurgy die-casting molding or glass fiber reinforced engineering plastic injection molding, and then are sleeved at the two ends of the knocking shaft in an interference fit manner, so that the knocking shaft is not provided with an eccentric structure and is concentrically processed except for drilling, and lathe processing is very convenient; while the precision strength of the knocking shaft and the eccentric block is ensured, the machining difficulty of the knocking shaft is greatly reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shoulder and neck massagers, in particular to a knocking transmission mechanism of a massage movement. Background Art

[0002] This shoulder and neck massager is designed to massage the user's shoulders and neck. To enhance the massage effect, the massage heads provide not only a swinging motion but also a percussion motion. The massage mechanism of the shoulder and neck massager is equipped with a kneading shaft and a percussion drive shaft. The massage head assembly is mounted on the kneading shaft, and a motor drives the shaft to rotate, causing the massage head assembly to perform the massage action. There are two sets of massage head assemblies, one at each end of the kneading shaft. During use, the two sets of massage head assemblies are placed on either side of the user's neck to massage the shoulders and base of the neck.

[0003] Both ends of the percussion transmission shaft are equipped with percussion drive mechanisms for vibrating the massage head assembly. When the percussion transmission shaft rotates, the percussion drive mechanism is driven by its attached drive structure to actuate, thereby vibrating the massage head assembly to achieve the effect of percussion massage.

[0004] For example, Chinese patent application number CN202322636944.5 discloses a percussion transmission mechanism for a massager, in which a thinner eccentric shaft is provided at one end of the transmission shaft (the eccentric shaft and the transmission shaft are integrally formed), and the hinge seat of the transmission hinge is sleeved on the eccentric shaft, and the hinge seat can rotate relative to the eccentric shaft. When the eccentric shaft rotates eccentrically, the hinge seat swings back and forth relative to the transmission shaft, thereby driving the swing arm of the transmission hinge to swing, so as to drive the massage part to perform a percussion action.

[0005] However, in the prior art, the eccentric shafts at the ends of the striking transmission shaft are directly machined at both ends of the striking transmission shaft, which requires specially customized working fixtures, resulting in complex machining, low efficiency, and low precision of the eccentric shafts. Utility Model Content

[0006] The technical problem to be solved by the present invention is to provide a percussion transmission mechanism for a massage movement, which increases production efficiency while ensuring the accuracy and strength of the transmission shaft and the eccentric block, greatly reduces the processing difficulty of the transmission shaft, and improves production efficiency.

[0007] The utility model is achieved in this way:

[0008] The utility model provides a percussion transmission mechanism of a massage movement, comprising a percussion shaft connected to a driving mechanism, wherein the end of the percussion shaft is detachably connected to an eccentric block, the eccentric block is composed of an integrally formed sleeve portion and an eccentric shaft, the sleeve portion is installed at the end of the percussion shaft, the sleeve portion is connected to the eccentric shaft, the axis of the eccentric shaft is eccentrically arranged with the axis of the percussion shaft, and the eccentric shaft is connected to a transmission hinge module.

[0009] Furthermore, the sleeve portion and the eccentric shaft are integrally formed by powder metallurgy die casting or by glass fiber reinforced engineering plastic injection molding.

[0010] Furthermore, both ends of the knocking shaft are respectively provided with mounting sections, the sleeve portion is provided with sleeve holes matching the mounting sections, and the mounting sections are interference fit in the sleeve holes.

[0011] Furthermore, the sleeve portion and the mounting section are fastened together by a first screw.

[0012] Furthermore, the mounting section is provided with a first threaded hole, the outer circumferential surface of the sleeve portion is provided with a first through hole, and the first screw passes through the first through hole and is spirally connected to the first threaded hole.

[0013] Furthermore, a second through hole and a second threaded hole are provided on the outer circular surface of the sleeve portion, the axes of the second through hole and the second threaded hole coincide, a third through hole is provided on the outer wall of the mounting section, and the first screw passes through the second through hole and the third through hole and is spirally connected to the second threaded hole.

[0014] Furthermore, the transmission hinge module includes a hinge seat, which is installed on the outer wall of the eccentric shaft. The outer wall of the hinge seat is provided with an ear plate, and the ear plate is connected to a cylindrical pin. The axis of the cylindrical pin is perpendicular to the axis of the eccentric shaft. The cylindrical pin is hinged with a ball head connecting rod, and the end of the ball head connecting rod away from the hinge seat is hinged to the massage head ball.

[0015] Furthermore, the hinge seat includes a bearing seat, a bearing and a bearing cover, the bearing seat is provided with a mounting hole, the bearing is mounted in the mounting hole, the bearing sleeve is arranged on the outer wall of the eccentric shaft, and the bearing cover is connected to the bearing seat by screws so that the outer ring of the bearing is fixed in the mounting hole;

[0016] The eccentric shaft is provided with a third threaded hole, the axis of the third threaded hole coincides with the axis of the eccentric shaft, the second screw for fixing the hinge seat is spirally connected to the third threaded hole, and a gasket is also connected to the outer wall of the second screw, and the gasket contacts the inner ring of the bearing to fix the inner ring of the bearing.

[0017] Furthermore, the outer wall of the knocking shaft is connected to a pulley, and the pulley is connected to a driving mechanism.

[0018] Furthermore, the pulley is rotatably connected to the striking shaft, and a one-way bearing is provided between the pulley and the striking shaft.

[0019] The advantages of the utility model are that the eccentric block is separated from the striking shaft and is formed by powder metallurgy die casting or glass fiber reinforced engineering plastic injection molding, and then is set on both ends of the striking shaft through interference fit, so that the striking shaft has no eccentric structure and is concentrically processed except for drilling, which is very convenient for lathe processing. While ensuring the accuracy and strength of the striking shaft and the eccentric block, the processing difficulty of the striking shaft is greatly reduced and the production efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 The utility model is a schematic diagram of the structure of the percussion transmission mechanism of the massage movement.

[0022] Figure 2 for Figure 1 Exploded view of the structure shown.

[0023] Figure 3 This is a structural diagram of another locking method between the sleeve portion and the installation section of the utility model.

[0024] Figure 4 This is a schematic diagram of the structure of the transmission hinge module of the utility model.

[0025] Figure 5 for Figure 1 Schematic diagram of the cross-sectional structure of the structure shown.

[0026] Description of the numbers in the figure:

[0027] 1. Tapping shaft; 11. Mounting section; 111. First threaded hole; 112. Third through hole; 2. Eccentric block; 21. Socket portion; 211. Socket hole; 212. First through hole; 213. Second through hole; 214. Second threaded hole; 215. Third threaded hole; 22. Eccentric shaft; 3. Transmission hinge module; 31. Hinge seat; 311. Bearing seat; 312. Bearing; 313. Bearing cover; 32. Ear plate; 33. Cylindrical pin; 34. Ball connecting rod; 4. First screw; 5. Pulley; 6. One-way bearing; 7. Second screw; 8. Gasket. DETAILED DESCRIPTION

[0028] See also Figures 1 to 5The utility model provides a percussion transmission mechanism of a massage movement, including a percussion shaft 1 connected to a driving mechanism, the end of the percussion shaft 1 is detachably connected to an eccentric block 2, the eccentric block 2 is composed of an integrally formed sleeve portion 21 and an eccentric shaft 22, the sleeve portion 21 is installed at the end of the percussion shaft 1, the sleeve portion 21 is connected to the eccentric shaft 22, the axis of the eccentric shaft 22 is eccentrically arranged with the axis of the percussion shaft 1, and the eccentric shaft 22 is connected to a transmission hinge module 3. The above arrangement makes the percussion shaft 1 have no eccentric structure, and except for drilling, all other processing is concentric, which is very convenient for lathe processing. Therefore, while ensuring the precision and strength of the percussion shaft 1 and the eccentric block 2, the processing difficulty of the percussion shaft 1 is greatly reduced, and the production efficiency is improved.

[0029] Specifically, the sleeve portion 21 and the eccentric shaft 22 are integrally formed by powder metallurgy die casting or glass fiber reinforced engineering plastic injection molding. The eccentric block 2 is produced by powder metallurgy die casting or glass fiber reinforced engineering plastic injection molding, which has high demoulding efficiency, good precision, and convenient production control.

[0030] Specifically, the two ends of the knocking shaft 1 are respectively provided with mounting sections 11 , and the sleeve portion 21 is provided with a sleeve hole 211 matching the mounting section 11 , and the mounting section 11 is interference-fitted in the sleeve hole 211 .

[0031] Specifically, the sleeve portion 21 and the mounting section 11 are locked by the first screw 4. There are two ways to fix the sleeve portion 21 and the mounting section 11. The first way is as follows: Figure 2 As shown, the mounting section 11 is provided with a first threaded hole 111 , the outer circumferential surface of the sleeve portion 21 is provided with a first through hole 212 , and the first screw 4 passes through the first through hole 212 and is spirally connected to the first threaded hole 111 .

[0032] The second type: Figure 3 The outer circular surface of the sleeve portion 21 is provided with a second through hole 213 and a second threaded hole 214, the axes of the second through hole 213 and the second threaded hole 214 coincide, and the outer wall of the mounting section 11 is provided with a third through hole 112, and the first screw 4 passes through the second through hole 213 and the third through hole 112 and is spirally connected to the second threaded hole 214.

[0033] Specifically, the transmission hinge module 3 includes a hinge seat 31, which is installed on the outer wall of the eccentric shaft 22. The outer wall of the hinge seat 31 is provided with an ear plate 32, and the ear plate 32 is connected to a cylindrical pin 33. The axis of the cylindrical pin 33 is perpendicular to the axis of the eccentric shaft 22. The cylindrical pin 33 is hinged with a ball head connecting rod 34, and the ball head connecting rod 34 is hinged to the massage head ball at one end away from the hinge seat.

[0034] The striking shaft 1 rotates under the drive mechanism, and the eccentric blocks 2 at both ends of the striking shaft 1 also rotate simultaneously. The rotation of the eccentric blocks 2 drives the hinge seat 31 to swing back and forth, and is transmitted to the massage head through the ball head connecting rod 34, so that the massage head produces a striking massage effect.

[0035] Specifically, the hinge seat 31 includes a bearing seat 311, a bearing 312, and a bearing cover 313. The bearing seat 311 is configured with a mounting hole, and the bearing 312 is mounted in the mounting hole. The bearing 312 is sleeved on the outer wall of the eccentric shaft 22. The bearing cover 313 is connected to the bearing seat 311 by screws so that the outer ring of the bearing 312 is fixed in the mounting hole.

[0036] The eccentric shaft 22 is provided with a third threaded hole 215, the axis of the third threaded hole 215 coincides with the axis of the eccentric shaft 22, the second screw 7 for fixing the hinge seat 31 is spirally connected to the third threaded hole 215, and the outer wall of the second screw 7 is also connected to a gasket 8, and the gasket 8 contacts the inner ring of the bearing 312 to fix the inner ring of the bearing 312.

[0037] Specifically, the outer wall of the knocking shaft 1 is connected to a pulley 5, which is connected to a driving mechanism. When the driving mechanism drives the kneading shaft to rotate, it also drives the knocking shaft 1 to rotate through a belt transmission, so that the massage movement can perform kneading massage and knocking massage at the same time.

[0038] Specifically, the pulley 5 is rotationally connected to the tapping shaft 1, and a one-way bearing 6 is disposed between the pulley 5 and the tapping shaft 1. The one-way bearing 6 can transmit force and torque in one direction while freely rotating in the opposite direction. When the drive mechanism rotates in the forward direction, the one-way bearing 6 is oriented to transmit force and torque, causing the pulley 5 on the tapping shaft 1 to rotate. However, when the drive mechanism rotates in the reverse direction, the one-way bearing 6 no longer transmits force and torque, and the pulley 5 idles on the outer wall of the tapping shaft 1. At this point, the massage movement only performs a kneading massage function.

[0039] Although the specific implementation methods of the present invention are described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A percussion transmission mechanism for a massage movement, characterized in that: It includes a knocking shaft connected to a driving mechanism, the end of the knocking shaft is detachably connected to an eccentric block, the eccentric block is composed of an integrally formed sleeve part and an eccentric shaft, the sleeve part is installed at the end of the knocking shaft, the sleeve part is connected to the eccentric shaft, the axis of the eccentric shaft is eccentrically arranged with the axis of the knocking shaft, and the eccentric shaft is connected to a transmission hinge module.

2. The percussion transmission mechanism of a massage movement according to claim 1, characterized in that: The sleeve portion and the eccentric shaft are integrally formed by powder metallurgy die casting or by glass fiber reinforced engineering plastic injection molding.

3. The percussion transmission mechanism of a massage movement according to claim 1, characterized in that: The two ends of the knocking shaft are respectively provided with mounting sections, the sleeve portion is provided with a sleeve hole matching the mounting section, and the mounting section is interference fit in the sleeve hole.

4. The percussion transmission mechanism of a massage movement according to claim 3, characterized in that: The sleeve portion and the mounting section are fastened together by a first screw.

5. The percussion transmission mechanism of a massage movement according to claim 4, characterized in that: The mounting section is provided with a first threaded hole, the outer circumferential surface of the sleeve portion is provided with a first through hole, and the first screw passes through the first through hole and is spirally connected to the first threaded hole.

6. The percussion transmission mechanism of a massage movement according to claim 4, characterized in that: A second through hole and a second threaded hole are provided on the outer circular surface of the sleeve portion, the axes of the second through hole and the second threaded hole coincide with each other, a third through hole is provided on the outer wall of the mounting section, and the first screw passes through the second through hole and the third through hole and is spirally connected to the second threaded hole.

7. The percussion transmission mechanism of a massage movement according to claim 1, characterized in that: The transmission hinge module includes a hinge seat, which is installed on the outer wall of the eccentric shaft. The outer wall of the hinge seat is provided with an ear plate, and the ear plate is connected to a cylindrical pin. The axis of the cylindrical pin is perpendicular to the axis of the eccentric shaft. The cylindrical pin is hinged with a ball head connecting rod, and the end of the ball head connecting rod away from the hinge seat is hinged to the massage head ball.

8. The percussion transmission mechanism of a massage movement according to claim 7, characterized in that: The hinge seat includes a bearing seat, a bearing and a bearing cover. The bearing seat is provided with a mounting hole. The bearing is mounted in the mounting hole. The bearing sleeve is mounted on the outer wall of the eccentric shaft. The bearing cover is connected to the bearing seat by screws so that the outer ring of the bearing is fixed in the mounting hole. The eccentric shaft is provided with a third threaded hole, the axis of the third threaded hole coincides with the axis of the eccentric shaft, the second screw for fixing the hinge seat is spirally connected to the third threaded hole, and a gasket is also connected to the outer wall of the second screw, and the gasket contacts the inner ring of the bearing to fix the inner ring of the bearing.

9. The percussion transmission mechanism of a massage movement according to claim 1, characterized in that: The outer wall of the knocking shaft is connected with a pulley, and the pulley is connected to the driving mechanism.

10. The percussion transmission mechanism of a massage movement according to claim 9, characterized in that: The pulley is rotatably connected to the knocking shaft, and a one-way bearing is provided between the pulley and the knocking shaft.

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