Massage distance adjustment structure and shoulder and neck massage mechanism

Abstract

A massage distance adjustment structure, characterized in that it comprises: an adjustment motor, an adjustment gear unit, two adjustment screws, two adjustment seats, two connecting seats, and a limiting mechanism, wherein the adjustment gear unit connects an adjustment motor and two adjustment seats, wherein two adjustment screws, two adjustment seats, and two connecting seats are each arranged symmetrically on the long rotating shaft of the massage mechanism, wherein the adjustment seats are connected to the adjustment gear unit, wherein the center of the adjustment seat has an internal thread, wherein the adjustment screw has an external thread that engages in the internal thread of the adjustment seat, wherein one end of the adjustment screw is connected to the adjustment seat and the other end is attached to the massage device via the connecting seat, and wherein the limiting mechanism comprises a conductive probe and a conductive electrode plate.wherein the conductive probe is connected to a circuit board, wherein the conductive electrode plate moves synchronously with the adjusting screw, wherein the distance between the two conductive probes is ≤ the length of the external thread of the adjusting screw, and wherein the conductive electrode plate is arranged between the two conductive probes.

Description

TECHNICAL AREA

[0001] This utility model relates to the technical field of massage devices, in particular a massage distance adjustment structure and a shoulder and neck massage mechanism. STATE OF THE ART

[0002] With societal progress and rapid technological development, the pace of work and life is constantly accelerating. All social classes strive for a better life and therefore have little time for physical activity. As a result, the population's health is deteriorating. This situation is particularly serious for office workers who spend long hours in front of a computer and for drivers who remain in their vehicles for extended periods. Prolonged desk work or screen time leads to severe muscle tension in the neck and shoulders, circulatory problems, and makes them susceptible to conditions such as frozen shoulder and cervical spondylosis.

[0003] Currently, numerous therapeutic aids for the aforementioned health problems are available on the market – for example, neck and shoulder massagers. These devices massage and relax the muscles in the neck and shoulder area quickly, and with regular use, pain can be effectively relieved. However, the size of the neck and shoulders varies from person to person; some people have a relatively strong neck and shoulders, while others have a rather narrow one. Most common neck and shoulder massagers use a fixed massage technique. This means that the distance between the massage heads is fixed and cannot be adjusted to the individual needs of the user. As a result, their suitability is limited to a relatively small group of people.

[0004] Against this background, this utility model was developed by thoroughly conceiving, actively researching and improving the design of existing shoulder and neck massage devices in order to eliminate the many shortcomings and inconveniences caused by their imperfect construction. CONTENTS OF THE PRESENT USE SAMPLE

[0005] The aim of this utility model is to overcome the shortcomings of the existing technology, since the massage distance cannot be adjusted, and to provide a massage distance adjustment structure with which the distance between two sets of massage devices can be adjusted.

[0006] To achieve the aforementioned objectives, the solution of this utility model is as follows: A massage distance adjustment structure comprising: an adjustment motor, an adjustment gear unit, two adjustment screws, two adjustment seats, two connecting seats, and a limiting mechanism, wherein the adjustment gear unit connects an adjustment motor and two adjustment seats, wherein two adjustment screws, two adjustment seats, and two connecting seats are each arranged symmetrically on the long rotating shaft of the massage mechanism, wherein the adjustment seats are connected to the adjustment gear unit, wherein the center of the adjustment seat has an internal thread, wherein the adjustment screw has an external thread engaging in the internal thread of the adjustment seat, wherein one end of the adjustment screw is connected to the adjustment seat and the other end is attached to the massage device via the connecting seat, and wherein the limiting mechanism comprises a conductive probe and a conductive electrode plate.wherein the conductive probe is connected to a circuit board, wherein the conductive electrode plate moves synchronously with the adjusting screw, wherein the distance between the two conductive probes is ≤ the length of the external thread of the adjusting screw, and wherein the conductive electrode plate is arranged between the two conductive probes.

[0007] Furthermore, the adjustment gear unit has a gear set consisting of an adjustment drive wheel, an adjustment gear shaft and an adjustment gear wheel, wherein the adjustment drive wheel meshes with the output shaft of the adjustment motor, wherein the adjustment drive wheel is fixedly arranged in the center position of the adjustment gear shaft, wherein the two ends of the adjustment gear shaft are each connected to an adjustment gear wheel and wherein the outer circumference of the adjustment seat has an adjustment wheel that meshes with the adjustment gear wheel.

[0008] Furthermore, a bearing is provided between the adjusting drive wheel and the two adjusting gear wheels on the adjusting gear shaft, with the bearing being arranged on the bearing seat and the bearing seat being attached to the housing.

[0009] Furthermore, the connecting seat comprises a first retaining ring, a second retaining ring and a connecting element, wherein one end of the connecting element is locked to the massage device, wherein the other end of the connecting element is provided with a first retaining ring, wherein the end of the adjusting screw connected to the connecting seat has a second retaining ring, wherein a groove is formed in the first retaining ring and second retaining ring which corresponds to the first retaining ring and the second retaining ring, wherein when the first retaining ring and the second retaining ring engage, the first retaining ring and the second retaining ring are fixed in the grooves and thereby firmly connect the massage device and the adjusting screw.

[0010] Furthermore, the conductive electrode plate is mounted on the second retaining ring of the connection seat, wherein a guide rail extends from the second retaining ring to one end of the adjusting screw, wherein the guide rail is provided with an electrode socket which extends to one end of the conductive probe, wherein the conductive electrode plate is mounted on the electrode socket.

[0011] The aim of this utility model is to overcome the shortcomings of the existing technology, since the massage distance cannot be adjusted, and to provide a shoulder and neck massage mechanism with adjustable massage distance.

[0012] To achieve the aforementioned objectives, the solution of this utility model is as follows: A shoulder and neck massage mechanism comprising: a housing, a battery, a massage motor, a circuit board, a massage gear device, a long rotating shaft, massage device and massage distance adjustment structure, wherein the battery and the massage motor are each connected to the circuit board, wherein the massage gear device is connected to the massage motor and the long rotating shaft and drives the long rotating shaft via the massage gear device, wherein two massage devices are arranged symmetrically on the long rotating shaft, wherein the adjustment motor is mounted on the housing on one side of the long rotating shaft and wherein the conductive probe is mounted on the housing.

[0013] Furthermore, the massage device comprises a push rod, an eccentric wheel, a rocker wheel, and a rocker arm, wherein the lower end of the push rod is provided with a first stop pin and the lower end of the rocker arm with a second stop pin, wherein the housing has a movable groove for moving the first stop pin and the second stop pin, wherein the eccentric wheel is provided with an eccentric bore and the eccentric wheel is also provided with a stop groove connected to this eccentric bore, wherein two pin holes are provided at the positions of the two ends of the corresponding stop groove on the long rotating shaft, and the eccentric wheel and the long rotating shaft are connected to each other by inserting the stop pins into the two pin holes and the stop groove, wherein the push rod is mounted on the eccentric wheel.wherein one end of the push rod rests against the eccentric wheel and the other end is locked with the connecting element of the connecting seat and the push rod is positioned on the eccentric wheel by the connecting element; wherein one end of the eccentric wheel is connected to the push rod and the other end to the eccentric wheel connecting plate and the eccentric wheel and the rocker wheel are firmly connected to each other by the eccentric wheel connecting plate, wherein one end of the rocker wheel is connected to the eccentric wheel connecting plate and the other end is provided with a rocker shaft, wherein one end of the rocker arm has a rocker bore corresponding to the rocker shaft, wherein the rocker bore is mounted on the rocker shaft, wherein the end of the rocker wheel facing away from the rocker shaft forms a rocker chamfer and wherein the top of the rocker arm is equipped with a rocker massage head.

[0014] Furthermore, the massage gear device comprises a drive wheel and a gear wheel, wherein the drive wheel is a double gear with a helical gear and a spur gear, wherein the helical gear meshes with the output shaft of the massage motor, wherein the spur gear is connected to and meshes with the gear wheel, and the gear wheel is rigidly connected to the long rotating shaft.

[0015] Furthermore, the minimum distance D1 ≥56 mm between the two oscillating massage heads of the two sets of massage devices, the minimum distance D2 ≥57 mm between the two push rods, the maximum distance D3 ≤133 mm between the two oscillating massage heads, and the maximum distance D4 ≤75 mm between the two push rods.

[0016] With the structure described above, the shoulder and neck massage mechanism of this utility model drives the adjustment gear unit and the adjustment seat by rotating the motor (forward or reverse). As the two adjustment seats rotate, the two adjustment screws screwed into the two adjustment seats move outwards or inwards. This movement of the adjustment screws sets the conductive electrode plates in motion. When the conductive electrode plate comes into contact with the conductive probe, the probe is energized. As soon as the circuit board detects the electrical signal, the adjustment motor reverses its direction of rotation. This allows the massage devices to move left and right within the stroke range of the two conductive probes.This, in turn, causes the two massage devices connected to the adjusting screws to expand or contract outwards, thus adjusting the distance between them. Once the two sets of massage devices are set to the desired width, the operation of the adjustment motor is stopped, allowing the width to be adjusted freely within the length range between the two guiding springs. This utility model can be used by consumers with different body types, thereby expanding its application range and increasing its competitiveness in the market. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 shows an exploded view of the shoulder and neck massage mechanism of this utility model. Fig. Figure 2 shows a schematic representation of the massage distance adjustment structure of this utility model. Fig. Figure 3 shows a schematic cross-sectional view of the combined shoulder and neck massage mechanism of this utility model. Fig. Figure 4 shows a schematic representation of the construction of the adjusting screw and the connecting seat of this utility model. Fig. Figure 5 shows an exploded view of the structure of the massage device of this utility model. Fig. Figure 6 shows a schematic representation of the appearance of the closest massage distance of this utility model. Fig. Figure 7 shows a schematic representation of the appearance of the largest massage distance of this utility model. Explanation of reference symbols:

[0017] 1. Housing; 11. Movable groove; 2. Battery; 3. Massage motor; 4. Circuit board; 5. Massage gear assembly; 6. Long rotating shaft; 7. Massage device; 71. Push rod; 711. First stop pin; 712. Plug; 72. Eccentric wheel; 721. Eccentric bore; 722. Stop groove; 73. Oscillating wheel; 731. Oscillating shaft; 732. Oscillating chamfer; 74. Oscillating arm; 741. Second stop pin; 742. Oscillating bore; 75. Eccentric wheel connecting plate; 8. Massage distance adjustment structure; 81. Adjustment motor; 82. Adjustment gear assembly; 821. Adjustment drive wheel; 822. Adjustment gear shaft; 823. Adjustment gear wheel; 824. Bearing; 825. Bearing seat; 83. Adjusting screw; 831. External thread; 832. Second retaining ring; 84. Adjusting seat; 841. Internal thread; 842. Adjusting wheel; 85. Connecting seat; 851. First retaining ring; 852. Second retaining ring; 853. Connecting element; 854. First retaining ring; 855. Groove; 856. Guide rail; 857. Electrode bushing; 86. Limiting mechanism; 861. Conductive probe; 862.Conductive electrode plate. DETAILED DESCRIPTION

[0018] To further explain the technical solution of this utility model, a detailed description of this utility model is given below using specific examples.

[0019] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "top," "bottom," "front," "rear," "left," "right," "vertical," "horizontal," "above," "below," "inside," and "outside," etc., which indicate orientation or positional relationships, are based on the orientation or positional relationships illustrated in the accompanying drawings and serve only to simplify the description of this utility model. They neither mean nor imply that the described device or element must have a specific orientation or be designed and operated in a specific orientation. Therefore, they are not to be interpreted as limitations of this utility model. In the description of this utility model, "several" means two or more, unless otherwise specified.

[0020] As in the Fig. Figures 1 to 5 illustrate this utility model discloses a shoulder and neck massage mechanism. This shoulder and neck massage mechanism comprises a housing 1, a battery 2, a massage motor 3, a circuit board 4, a massage gear unit 5, a long rotating shaft 6, a massage device 7, and a massage distance adjustment structure 8. The battery 2 and the massage motor 3 are each connected to the circuit board 4. The massage gear unit 5 is connected to the massage motor 3 and the long rotating shaft 6 and drives the long rotating shaft 6 via the massage gear unit 5, with two massage devices 7 arranged symmetrically on the long rotating shaft 6. The massage distance adjustment structure 8 comprises an adjustment motor 81, an adjustment gear unit 82, two adjustment screws 83, two adjustment seats 84, and two connecting seats 85. The adjustment motor 81 is mounted on the housing 1 on one side of the long rotating shaft 6.The adjustment gear unit 82 is connected to the adjustment motor 81 and the two adjustment seats 84. The two adjustment screws 83, the two adjustment seats 84, and the two connecting seats 85 are arranged symmetrically on the long rotating shaft 6. The adjustment seat 84 is connected to the adjustment gear unit 82, the center of which has an internal thread 841. The adjustment screw 83 has an external thread 831 that engages in the internal thread 841 of the adjustment seat 84. One end of the adjustment screw 83 is connected to the adjustment seat 84, and the other end is attached to the massage device 7 via the connecting seat 85. The forward or reverse rotation of the adjustment motor 81 sets the adjustment gear unit 82 in motion. The adjustment gear unit 82 rotates the two adjustment seats 84 forward or backward.By rotating the adjusting seat 84, the adjusting screw 83 moves closer to or further away from the adjusting seat 84. This, in turn, causes the two massage devices 7 connected to the two adjusting screws 83 to move closer to or further away from each other. This increases or decreases the distance between the two massage devices 7, thus adjusting the massage distance.

[0021] This utility model is provided with an adjusting screw 83 and an adjusting seat 84 on the long rotating shaft 6, which are screwed together. The adjusting screw 83 is connected to the massage device 7, and the adjusting seat 84 is driven to rotate by the adjusting gear unit 82. By rotating the adjusting screw 83, which is screwed to the adjusting seat 84, the distance between the massage devices 7 can be adjusted. If the adjusting screw 83 moves outward from the outer end of the long rotating shaft 6, the distance between the two massage devices 7 increases. If the adjusting screw 83 moves toward the center of the long rotating shaft 6, the distance between the two massage devices 7 decreases.Users can adjust the distance between the two massage devices 7 according to their needs, thereby expanding the applicability of this utility model and increasing its competitiveness in the market.

[0022] The massage distance adjustment structure 8 is equipped with a limiting mechanism 86 that limits the adjustment range of the adjusting screw 83. In this embodiment, the limiting mechanism 86 comprises a conductive probe 861 and a conductive electrode plate 862. The conductive probe 861 is connected to the circuit board 4. The conductive electrode plate 862 moves synchronously with the adjusting screw 83 and can be attached either to the adjusting screw 83, to the connecting seat 85, or to the massage device 7. It can move back and forth with the adjusting screw 83. Two conductive probes 861 are arranged on the housing 1, and the conductive electrode plate 862 is located between the two probes 861. When the adjusting screw 83 is turned, the conductive electrode plate 862 moves. As soon as the conductive electrode plate 862 touches the conductive probe 861, this conductive probe 861 is energized.As soon as the circuit board 4 detects the current signal, the adjustment motor 81 reverses its direction of rotation. This allows the massage device 7 to move left and right within the stroke range of the two conductive probes 861, thus adjusting the distance between the two massage devices 7.

[0023] The adjustment gear unit 82 can, as in the Fig. 1 and Fig. Figure 2 shows that the adjustment unit 82 can be driven via a gear drive or a belt drive. In this embodiment, the adjustment unit 82 uses a gear drive consisting of an adjustment drive gear 821, an adjustment shaft 822, and an adjustment gear 823. The adjustment drive gear 821 meshes with the output shaft of the adjustment motor 81. The adjustment drive gear 821 is fixedly arranged in the center of the adjustment shaft 822. An adjustment gear 823 is mounted at each end of the adjustment shaft 822. The outer circumference of the adjustment seat 84 has an adjustment gear 842 that meshes with the adjustment gear 823. After the adjustment motor 81 starts, its output shaft drives the meshing adjustment drive gear 821 to rotate. The adjusting drive wheel 821 drives the adjusting gear shaft 822 and the adjusting gear wheel 823 for synchronous rotation.The adjusting gear wheel 823 then drives the meshing adjusting wheel 842 to rotate, thereby realizing the relative movement between the adjusting screw 83 and the adjusting seat 84.

[0024] Preferably, the adjustable gear shaft 822 is provided with a bearing 824 between the adjustable drive gear 821 and the two adjustable gear gears 823. The bearing 824 is mounted on a bearing seat 825. The bearing seat 825 is attached to the housing 1. The bearings reduce the frictional resistance of the adjustable gear shaft 822, decrease energy loss, and ensure precise radial and axial positioning of the adjustable gear shaft 822. This limits the radial and axial displacement of the adjustable gear shaft 822 and ensures stable rotation of the adjustable gear shaft 822 along a predetermined path.

[0025] In this embodiment, the connecting seat 85 comprises a first retaining ring 851, a second retaining ring 852, and a connecting element 853. One end of the connecting element 853 is locked to the massage device 7. The other end of the connecting element 853 is provided with a first retaining ring 854. The end of the adjusting screw 83 connected to the connecting seat 85 has a second retaining ring 832. A groove 855 is formed in the first retaining ring 851 and the second retaining ring 852, corresponding to the first retaining ring 854 and the second retaining ring 832, respectively. When the first retaining ring 851 and the second retaining ring 852 engage, the first retaining ring 854 and the second retaining ring 832 are fixed in the grooves 855, thereby firmly connecting the massage device 7 and the adjusting screw 83.

[0026] As in Fig. As shown in Figure 4, the conductive electrode plate 862 can be mounted in various ways. In this embodiment, the conductive electrode plate 862 is mounted on the second retaining ring 852 of the connecting seat 85. A guide rail 856 extends from the second retaining ring 852 to one end of the adjusting screw 83, and the guide rail 856 is provided with an electrode socket 857 that extends to one end of the conductive probe 861, with the conductive electrode plate 862 being mounted on the electrode socket 857.

[0027] As in Fig. As shown in Figure 5, the massage device 7 in this embodiment comprises a push rod 71, an eccentric wheel 72, a rocker wheel 73, and a rocker arm 74. The lower end of the push rod 71 is provided with a first stop pin 711. The lower end of the rocker arm 74 is provided with a second stop pin 741. The housing 1 has a movable groove 11 in which the first stop pin 711 and the second stop pin 741 can move. The eccentric wheel 72 is provided with an eccentric bore 721. The eccentric wheel 72 also has a stop groove 722 that communicates with the eccentric bore 721. Two pin holes on the long rotating shaft 6 are located at the ends of the stop groove 722. The eccentric wheel 72 is fastened to the long rotating shaft 6 by inserting stop pins into the two pin holes and the stop groove 722. The push rod 71 is pushed onto the eccentric wheel 72.One end of the push rod 71 rests against the eccentric wheel 72, while the other end is locked to the connecting element 853 of the connecting seat 85. This positions the push rod 71 on the eccentric wheel 72 via the connecting element 853. One end of the eccentric wheel 72 is connected to the push rod 71, and the other end to the eccentric wheel connecting plate 75, thus connecting the rocker wheel 73 and the eccentric wheel 72 to each other via the eccentric wheel connecting plate 75. One end of the rocker wheel 73 is attached to the eccentric wheel connecting plate 75, and the other end is provided with a rocker shaft 731. One end of the rocker arm 74 has a rocker bore 742 that corresponds to the rocker shaft 731. The vibrating bore 742 is mounted on the vibrating shaft 731, wherein the end of the vibrating wheel 73 facing away from the vibrating shaft 731 forms a vibrating chamfer 732 and wherein the upper side of the vibrating arm 74 is equipped with a vibrating massage head 75.In this embodiment, the massage gear device 5 comprises a drive wheel and a gear wheel (in . Fig. 1 (concealed by the motor cover), wherein the drive wheel is a double gear with a helical gear and a spur gear, wherein the helical gear meshes with the output shaft of the massage motor 3, wherein the spur gear is connected to and meshes with the gear wheel, and the gear wheel is rigidly connected to the long rotating shaft 6.

[0028] When the massage mechanism with adjustable massage distance of this utility model is in operation, the battery supplies power to the circuit board, which in turn controls the massage motor 3. When the massage motor 3 is running, it drives the meshing drive wheel. This drive wheel, in turn, drives the gear wheel and the long rotating shaft 6. The long rotating shaft 6 drives the eccentric wheel 72 and the rocker wheel 73, which in turn rotate the push rod 71. The push rod 71 is limited by the second stop pin 741, allowing the free end of the push rod 71 to move up and down within a certain range. Since the rocker wheel 73 has a chamfer 732, the rocker arm 74, mounted on the rocker shaft 731, can oscillate left and right under the action of the first stop pin 711 when the long rotating shaft 6 rotates, thus contracting around its neck.In combination with the push rod 71, this produces a kneading and squeezing massage effect. The distance between the two sets of massage devices 7 can be adjusted by changing the forward or reverse rotation of the motor 81.

[0029] As in Fig. As shown in Figure 6, the distance between the two oscillating massage heads 75 and the two push rods 71 ​​between the two sets of massage devices 7 is smallest, the minimum distance D1 ≥ 56 between the two oscillating massage heads 75; the minimum distance D2 ≥ 57 between the two push rods 71 ​​is when the massage devices 7 of this utility model move under the drive of the adjusting screw 83 in the direction of the conductive probe 861 near the center of the long rotating shaft 6.

[0030] As in Fig.As shown in Figure 7, the distance between the two oscillating massage heads 75 and the two push rods 71 ​​between the two sets of massage devices 7 is at its maximum. The maximum distance D3 ≤ 133 mm between the two oscillating massage heads 75 is also at its maximum. The maximum distance D4 ≤ 75 mm between the two push rods 71 ​​is when the massage devices 7 of this utility model move outwards towards the conductive probe 861 on the outside by means of the adjusting screw 83. The above embodiments and figures do not restrict the form and style of this utility model. Any changes or modifications made by persons skilled in the art should be considered to be within the scope of protection of this utility model.

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