CN114028202A - Massage driving mechanism and fascia gun - Google Patents

Massage driving mechanism and fascia gun Download PDF

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Publication number
CN114028202A
CN114028202A CN202111596172.6A CN202111596172A CN114028202A CN 114028202 A CN114028202 A CN 114028202A CN 202111596172 A CN202111596172 A CN 202111596172A CN 114028202 A CN114028202 A CN 114028202A
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China
Prior art keywords
eccentric wheel
shaft seat
motor
massage
gear
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CN202111596172.6A
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Chinese (zh)
Inventor
张文
夏良飞
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Sichuan Qianli Beoka Medical Technology Inc
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Sichuan Qianli Beoka Medical Technology Inc
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Priority to CN202111596172.6A priority Critical patent/CN114028202A/en
Publication of CN114028202A publication Critical patent/CN114028202A/en
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H23/00—Percussion or vibration massage, e.g. using supersonic vibration; Suction-vibration massage; Massage with moving diaphragms
    • A61H23/02—Percussion or vibration massage, e.g. using supersonic vibration; Suction-vibration massage; Massage with moving diaphragms with electric or magnetic drive
    • A61H23/0254—Percussion or vibration massage, e.g. using supersonic vibration; Suction-vibration massage; Massage with moving diaphragms with electric or magnetic drive with rotary motor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • H02K7/075—Means for converting reciprocating motion into rotary motion or vice versa using crankshafts or eccentrics
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/12—Driving means
    • A61H2201/1207—Driving means with electric or magnetic drive
    • A61H2201/1215—Rotary drive

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Pain & Pain Management (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Rehabilitation Therapy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Percussion Or Vibration Massage (AREA)

Abstract

The invention belongs to the field of massage equipment, and particularly discloses a massage driving mechanism capable of changing amplitude and a fascia gun comprising the massage driving mechanism. The eccentric wheel component of the massage driving mechanism mainly comprises a lower eccentric wheel, an upper eccentric wheel, a gear and a movable shaft seat, wherein the movable shaft seat with the eccentric shaft is meshed with the gear through a rack on the lower portion of the movable shaft seat, and can move between a first limiting portion and a second limiting portion along the gear contour line direction of the rack. Because the eccentric distance e of the eccentric shaft is when the movable shaft seat is in a positive and negative locking state1≠e2Therefore, the amplitude A generated by the piston rod when the motor rotates forward and backward1≠A2Therefore, when the massage device can meet the requirements of customers on different massage depths, the massage effect is ensured, and the user experience is improved.

Description

Massage driving mechanism and fascia gun
Technical Field
The invention belongs to the field of massage equipment, and particularly relates to a massage driving mechanism and an anadesma gun.
Background
Fascia guns, also known as deep myofascial impactors, are soft tissue massage tools that relax the soft tissues of the body by high frequency impact. The existing fascia gun drives a massage head to do reciprocating linear reciprocating motion through a massage driving mechanism, the massage head is contacted with a human body, and high-frequency vibration is generated to act on a muscle deep layer, so that the fascia gun has the effects of reducing local tissue tension, relieving pain, promoting blood circulation and the like.
The existing massage driving mechanism mainly comprises a motor, an eccentric wheel arranged on the output end of the motor, a transmission arm with one end hinged with the eccentric shaft of the eccentric wheel, and a piston rod with the tail hinged with the other end of the transmission arm. In the working process of the fascia gun, the motor drives the eccentric wheel, the transmission arm, the piston rod and the massage head to be linked to form a beating massage mode, and the amplitude, namely the beating distance, of the fascial gun is determined by the eccentric distance of the eccentric shaft on the eccentric wheel.
However, the existing massage driving mechanism is a fixed eccentric shaft, and the eccentricity cannot be adjusted, for example: hit and beat the massage actuating mechanism that distance is 8mm, its motor all is the same distance of hitting under the positive and negative circumstances, hits the less position of hitting the muscle under the great circumstances of hitting the distance and can feel painful, hits the place that hits the muscle more under the less circumstances of hitting the distance and play not too big massage effect, consequently can not satisfy the customer far away when massaging different positions, to the demand of the different amplitudes of manadesma rifle.
Disclosure of Invention
The invention aims to provide a massage driving mechanism capable of changing amplitude.
The technical scheme adopted by the invention for solving the technical problems is as follows: the massage driving mechanism comprises a motor, an eccentric wheel component, a transmission arm and a piston rod, wherein two ends of the transmission arm are respectively hinged with the eccentric shaft of the eccentric wheel component and the tail part of the piston rod; the eccentric wheel assembly comprises a lower eccentric wheel, an upper eccentric wheel, a gear and a movable shaft seat, wherein the movable shaft seat comprises a shaft seat main body, an eccentric shaft arranged at the upper part of the shaft seat main body and a rack arranged at the lower part of the shaft seat main body;
the upper eccentric wheel is arranged on the upper side of the lower eccentric wheel, and an adjusting cavity is formed between the upper eccentric wheel and the lower eccentric wheel;
the output end of the motor penetrates through the lower eccentric wheel and extends into the adjusting cavity, and the gear is arranged in the adjusting cavity and is installed on the output end of the motor;
the movable shaft seat is arranged on the lower eccentric wheel and/or the upper eccentric wheel and can move along the gear contour line direction of the rack; the lower part of the movable shaft seat is positioned in the adjusting cavity, and a rack of the movable shaft seat is meshed with the gear;
a first limiting part and a second limiting part which are respectively arranged at the front end and the rear end of the rack are arranged in the adjusting cavity, when the movable shaft seat moves to the front end of the rack to be abutted against the first limiting part, the eccentric distance between the eccentric shaft and the rotating center of the eccentric wheel component is e1(ii) a When the movable shaft seat moves to the rear end of the rack and is abutted against the second limiting part, the eccentricity between the eccentric shaft and the rotating center of the eccentric wheel component is e2，e2≠e1。
Furthermore, the cross section of the output end of the motor is D-shaped, and a D-shaped hole is formed in the center of the gear and is matched and installed with the output end of the motor through the D-shaped hole.
Further, the upper portion of lower eccentric wheel is equipped with the mounting groove, two wall surfaces of groove around the mounting groove are first spacing portion and second spacing portion respectively, gear and rack all are in the mounting groove.
Furthermore, the left and right side groove walls of the mounting groove respectively extend upwards to form a left connecting table and a right connecting table, and the upper eccentric wheel is arranged on the lower eccentric wheel and is respectively connected with the left connecting table and the right connecting table through a connecting piece.
Furthermore, a U-shaped opening is formed in the upper eccentric wheel and is located right above the installation groove, the width of the U-shaped opening is smaller than that of the installation groove, the left connecting table, the right connecting table and the upper eccentric wheel jointly enclose an installation space with a vertical section in a shape like a Chinese character 'tu', and a shaft seat main body of the movable shaft seat is arranged in the installation space and is in clearance fit with the installation space.
Furthermore, a positioning structure matched with the lower eccentric wheel is arranged on the upper eccentric wheel.
Furthermore, the positioning structure is a protruding part arranged at the rear end of the bottom surface of the upper eccentric wheel, and the protruding part is embedded and matched between the rear end of the left connecting table and the rear end of the right connecting table.
Further, the eccentric wheel assembly further comprises a bearing; the bottom of the lower eccentric wheel is provided with a bearing hole, and the bearing is arranged in the bearing hole; the output shaft of the motor is matched and installed with the inner hole of the bearing, and the output end of the motor is the upper end of the output shaft.
Further, e1And e2The difference is 3-4 mm.
The invention also provides a fascia gun, which comprises a shell and the massage driving mechanism, wherein the massage driving mechanism is arranged in the shell, the motor is fixedly connected with the shell through a motor fixing support, and the piston rod is movably connected with the shell through a sliding sleeve.
Further, the fascia gun also comprises a main control board; the shell is provided with a motor forward and reverse rotation control switch, and the motor forward and reverse rotation control switch are respectively electrically connected with the main control board.
The invention has the beneficial effects that: this massage actuating mechanism is through setting up the eccentric wheel subassembly mainly by lower eccentric wheel, go up the eccentric wheel, gear and activity axle bed constitute, and make the activity axle bed of taking the eccentric shaft be in the same place through rack and gear engagement of its lower part, and can follow the gear outline line direction of rack and move between first spacing portion and the spacing portion of second, when motor drive gear corotation, the gear can order about the rack and drive activity axle bed and move to rack front end and first spacing portion butt, and then make the activity axle bed be in corotation lock dead state, thereby can drive whole eccentric wheel subassembly rotatory, and order about driving arm and piston rod interlock, the amplitude that the piston rod produced at this moment is A, the amplitude that the piston rod produced is A1(ii) a Similarly, when the motor drives the gear to rotate reversely, the amplitude generated by the piston rod is A2(ii) a Because the eccentric distance e of the eccentric shaft is when the movable shaft seat is in a positive and negative locking state1≠e2And thus the amplitude A generated by the piston rod1≠A2Therefore, when the massage device can meet the requirements of customers on different massage depths, the massage effect is ensured, and the user experience is improved.
Secondly, the eccentric distance of the eccentric shaft is changed by the transmission of the gear and the rack of the movable shaft seat, so that the transmission precision is high, the eccentric distance is convenient to accurately control, and in addition, the direct stress point is the meshing point of the gear and the rack in the use process, the bearing capacity is large, and the service life is favorably ensured.
In addition, when the movable shaft seat is switched to a positive locking state and a reverse locking state, the change of the whole gravity center of the eccentric wheel assembly can be caused, so that the balance weights of the eccentric wheels with different eccentricity requirements are different, the change of the gravity center is in linear correlation with the change of the eccentricity through the gear and rack transmission, the eccentric wheel assembly can be better adjusted, and the noise and the shaking caused by the change of the gravity center are reduced.
Drawings
Fig. 1 is a schematic sectional view of the massage drive mechanism of the present invention;
fig. 2 is a three-dimensional exploded view of the massage drive mechanism of the present invention;
FIG. 3 is a schematic three-dimensional view of the lower eccentric wheel of the present invention;
FIG. 4 is a schematic view of the inverted three-dimensional structure of the upper eccentric wheel and the movable shaft seat of the present invention after assembly;
labeled as: the motor comprises a motor 100, an output shaft 110, a motor fixing support 120, a lower eccentric wheel 210, a first limiting part 211, a second limiting part 212, a left connecting table 213, a right connecting table 214, an upper eccentric wheel 220, a connecting piece 221, a U-shaped opening 222, a convex part 223, a gear 230, a D-shaped hole 231, a movable shaft seat 240, an eccentric shaft 241, a rack 242, a bearing 250, a transmission arm 300, a piston rod 400 and a sliding sleeve 410.
Detailed Description
The invention will be further explained with reference to the drawings.
In the description of the present invention, it should be noted that the terms "front", "back", "left", "right", "upper", "lower", "inner", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description, and do not indicate or imply that the referred device or component must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1 and 2, the massage driving mechanism includes a motor 100, an eccentric wheel assembly, a driving arm 300 and a piston rod 400, wherein two ends of the driving arm 300 are respectively hinged to an eccentric shaft 241 of the eccentric wheel assembly and a tail of the piston rod 400; the eccentric wheel assembly comprises a lower eccentric wheel 210, an upper eccentric wheel 220, a gear 230 and a movable shaft seat 240, wherein the movable shaft seat 240 comprises a shaft seat main body, an eccentric shaft 241 arranged on the upper part of the shaft seat main body and a rack 242 arranged on the lower part of the shaft seat main body;
the upper eccentric wheel 220 is arranged on the upper side of the lower eccentric wheel 210, and an adjusting cavity is formed between the upper eccentric wheel 220 and the lower eccentric wheel 210;
the output end of the motor 100 passes through the lower eccentric wheel 210 and extends into the adjusting cavity, and the gear 230 is arranged in the adjusting cavity and is installed on the output end of the motor 100;
the movable shaft seat 240 is mounted on the lower eccentric wheel 210 and/or the upper eccentric wheel 220 and can move along the gear contour line direction of the rack 242; the lower part of the movable shaft seat 240 is in the adjusting cavity, and the rack 242 thereof is meshed with the gear 230;
a first limiting part 211 and a second limiting part 212 which are respectively arranged at the front end and the rear end of the rack 242 are arranged in the adjusting cavity, when the movable shaft seat 240 moves to the front end of the rack 242 to be abutted against the first limiting part 211, the eccentric distance between the eccentric shaft 241 and the rotating center of the eccentric wheel component is e1(ii) a When the movable shaft seat 240 moves to the rear end of the rack 242 and is abutted against the second limiting part 212, the eccentricity between the eccentric shaft 241 and the rotation center of the eccentric wheel component is e2，e2≠e1。
The massage driving mechanism changes the locking state of the movable shaft seat 240 by the forward and backward rotation of the motor 100 to adjust the eccentricity of the eccentric shaft to e1Or e2Thereby, the piston rod 400 can generate an amplitude A1Or A2The massage distance of (a); the specific working principle is as follows: when the motor 100 drives the gear 230 to rotate forward, the gear 230 drives the rack 242 to drive the movable shaft seat 240 to move to the front end of the rack 242 to abut against the first limiting portion 211, so that the movable shaft seat 240 is in a forward rotation locking state, and the motor 100 can drive the entire eccentric wheel assembly to rotate and drive the eccentric wheel assembly to rotateThe transmission arm 300 is interlocked with the piston rod 400, and the massage head is arranged at the head of the piston rod 400 to form the amplitude A1The beating massage mode of (1); when the gear of the motor 100 rotates reversely, the gear 230 drives the rack 242 to drive the movable shaft seat 240 to move to the rear end of the rack 242 to abut against the second limiting portion 212, so that the movable shaft seat 242 is in a reverse locking state, the motor 100 can drive the whole eccentric wheel assembly to rotate, the transmission arm 300 is driven to be linked with the piston rod 400, and the massage head is arranged on the head of the piston rod 400 to form an amplitude A2The beating massage mode of (1); due to eccentricity e of the eccentric shaft1≠e2And thus the amplitude A generated by the piston rod1≠A2Therefore, the massage driving mechanism is favorable to be used as a driving mechanism of the massage equipment, and the requirements of customers on different massage depths can be realized.
The motor 100 is a driving device of the massage driving mechanism, and may be various, and is preferably a brushless motor. The motor 100 is generally fixed by the motor fixing bracket 120, and the output shaft 110 thereof is rotatably fitted with the lower eccentric wheel 210, for example: shaft hole fit, fit through bushing, fit through bearing 250, etc. The output end of the motor 100 is the upper end of the output shaft 110, and in order to facilitate the installation of the fixed gear 230, as shown in fig. 2 and 3, the output end of the motor 100 is configured to have a cross-section in a "D" shape, and a D-shaped hole 231 is formed in the center of the gear 230 and is installed in cooperation with the output end of the motor 100 through the D-shaped hole 231.
The eccentric wheel component mainly comprises a lower eccentric wheel 210, an upper eccentric wheel 220, a gear 230, a movable shaft seat 240 and other parts; the lower eccentric wheel 210 is a carrier component of an eccentric wheel component and is mainly used for mounting the components such as the upper eccentric wheel 220, the gear 230, the movable shaft seat 240 and the like; the upper eccentric wheel 220 is a part of the upper and lower limit movable shaft seat 240, and is generally installed and fixed on the upper side of the lower eccentric wheel 210 through a connecting piece 221 or a connecting structure, or can be a structure integrated with the lower eccentric wheel 210; an adjusting cavity formed between the upper eccentric wheel 220 and the lower eccentric wheel 210 is mainly used for mounting transmission parts such as a gear 230, a rack 242 and the like, and arranging limiting components such as a first limiting part 211, a second limiting part 212 and the like; the movable shaft seat 240 is a movable carrier of the eccentric shaft 241, and can drive the eccentric shaft 241 to move so as to change the eccentricity of the eccentric shaft 241.
The gear 230 and the rack 242 are transmission components for driving the movable shaft seat 240 to move, and the gear 230 and the rack 242 are adopted for transmission, so that the transmission precision is high, the eccentric distance of the eccentric shaft 241 can be accurately controlled, and the direct stress point is the meshing point of the gear 230 and the rack 242 in the use process, so that the service life of the eccentric shaft is ensured; and because the movable shaft seat 240 can cause the change of the whole gravity center of the eccentric wheel assembly when switching the positive and negative locking states, the eccentric wheel balance weights required by different eccentricity are different, and the transmission of the gear 230 and the rack 242 is beneficial to leading the change of the gravity center to be linearly related with the change of the eccentricity, thereby being beneficial to better adjusting the eccentric wheel assembly and reducing the noise and the shake caused by the change of the gravity center.
The first limiting portion 211 and the second limiting portion 212 are respectively used for limiting the limit positions of the movable shaft seat 240 in forward and backward movement, and the first limiting portion 211 and the second limiting portion 212 may be various, for example: a limit stop lever, a limit surface, a limit screw, a limit bulge and the like.
In order to facilitate installation and protection of the transmission component, and limit the rack 242, as shown in fig. 1, fig. 2, fig. 3, and fig. 4, an installation groove is provided at the upper portion of the lower eccentric wheel 210, a first limit portion 211 and a second limit portion 212 are respectively provided at front and rear wall surfaces of the installation groove, and the gear 230 and the rack 242 are both located in the installation groove.
In order to facilitate the installation and fixation of the upper eccentric 220, as shown in fig. 2 and 3, the left and right groove walls of the installation groove are respectively extended upward to form a left connecting platform 213 and a right connecting platform 214, and the upper eccentric 220 is arranged on the lower eccentric 210 and is respectively connected with the left connecting platform 213 and the right connecting platform 214 through a connecting piece 221. The left connecting table 213 and the right connecting table 214 are formed to facilitate the installation and fixation of the lower eccentric wheel 210 and the upper eccentric wheel 220, and to raise the upper eccentric wheel 220 to form a space capable of accommodating the lower portion of the movable shaft seat 240. The connecting member 221 is used for connecting fixed components, and may be various, such as: screws, bolts, pins, etc.
On the basis, in order to facilitate assembly and form an eccentric wheel assembly with better integrity, as shown in fig. 2, 3 and 4, the upper eccentric wheel 220 is provided with a U-shaped opening 222 located right above the mounting groove, the width of the U-shaped opening 222 is smaller than that of the mounting groove, the left connecting table 213, the right connecting table 214 and the upper eccentric wheel 220 together enclose a mounting space with a vertical section in a shape of a Chinese character 'tu', and the shaft seat main body of the movable shaft seat 240 is arranged in the mounting space and is in clearance fit with the mounting space. The upper eccentric wheel 220 and the movable shaft seat 240 are installed on the lower eccentric wheel 210 in a matched mode, so that the structure of the eccentric wheel assembly is stable, all parts of the eccentric wheel assembly in the high-speed rotating process are matched tightly, the stability of the integral structure of the forward and reverse locking states of the movable shaft seat 240 is guaranteed, and noise generated in the working process is small.
In order to facilitate the matching installation of the upper eccentric wheel 220 and the lower eccentric wheel 210 and further improve the integrity of the eccentric wheel assembly, the upper eccentric wheel 220 is provided with a positioning structure matched with the lower eccentric wheel 210. The positioning structure may be various, for example: positioning columns, positioning bulges, grooves and the like; preferably, as shown in fig. 1, 2, 3 and 4, the positioning structure is a protrusion 223 disposed at the rear end of the bottom surface of the upper eccentric 220, and the protrusion 223 is inserted and fitted between the rear end of the left connecting platform 213 and the rear end of the right connecting platform 214. This bellying 223 simple structure, the cooperation is effectual, does benefit to the processing preparation and effectively improves the wholeness of eccentric wheel subassembly.
In order to ensure the engagement effect of the rotatable engagement portion of the output shaft 110 of the motor 100 and the lower eccentric wheel 210 and reduce friction when the output end of the motor 100 penetrates into the adjustment cavity, as further shown in fig. 1 and 2, the eccentric wheel assembly further includes a bearing 250; the bottom of the lower eccentric wheel 210 is provided with a bearing hole, and the bearing 250 is installed in the bearing hole; the output shaft 110 of the motor 100 is fitted with the inner hole of the bearing 250, and the output end of the motor 100 is the upper end of the output shaft 110.
The eccentricity between the eccentric shaft 241 and the rotation center of the eccentric wheel assembly is generally determined according to the striking distance of the massage head, for example: the beating distance of the massage head is 6mm when the motor 100 rotates forwards,When the stroke distance of the massage head is 9mm when the motor 100 is reversely rotated, e can be determined1And e2The difference is 3 mm; another example is: when the stroke distance of the massage head is 10mm when the motor 100 is rotated forward and 6mm when the motor 100 is rotated backward, it can be determined that e1And e2The difference is 4 mm; to ensure the massage effect of the customer at different positions, it is preferable to make e1And e2The difference is 3-4 mm.
The invention also provides a fascia gun capable of changing amplitude to adjust the hitting distance of the massage head, which comprises a shell and the massage driving mechanism, wherein the massage driving mechanism is arranged in the shell, the motor 100 is fixedly connected with the shell through a motor fixing bracket 120, and the piston rod 400 is movably connected with the shell through a sliding sleeve 410. The motor fixing bracket 120 is generally fixed to the motor 100 by screws, and the frame bar of the motor fixing bracket 120 is generally fixed to a stud in the housing by screws and a vibration damping washer.
In order to facilitate regulation, specifically, the fascia gun further comprises a main control board; the shell is provided with a motor forward and reverse rotation control switch, and the motor 100 and the motor forward and reverse rotation control switch are respectively electrically connected with the main control board. When the massage machine is used, the forward rotation or reverse rotation working mode of the motor 100 is adjusted through the forward and reverse rotation control switch of the motor, so that long-stroke massage is used in places with more muscles, and short-stroke massage is used in places with less muscles.

Claims (11)

1. The massage driving mechanism comprises a motor (100), an eccentric wheel assembly, a transmission arm (300) and a piston rod (400), wherein two ends of the transmission arm (300) are respectively hinged with an eccentric shaft (241) of the eccentric wheel assembly and the tail of the piston rod (400); the method is characterized in that: the eccentric wheel assembly comprises a lower eccentric wheel (210), an upper eccentric wheel (220), a gear (230) and a movable shaft seat (240), wherein the movable shaft seat (240) comprises a shaft seat main body, an eccentric shaft (241) arranged on the upper part of the shaft seat main body and a rack (242) arranged on the lower part of the shaft seat main body;
the upper eccentric wheel (220) is arranged on the upper side of the lower eccentric wheel (210), and an adjusting cavity is formed between the upper eccentric wheel (220) and the lower eccentric wheel (210);
the output end of the motor (100) penetrates through the lower eccentric wheel (210) and extends into the adjusting cavity, and the gear (230) is arranged in the adjusting cavity and is installed on the output end of the motor (100);
the movable shaft seat (240) is mounted on the lower eccentric wheel (210) and/or the upper eccentric wheel (220) and can move along the direction of the gear contour line of the rack (242); the lower part of the movable shaft seat (240) is positioned in the adjusting cavity, and the rack (242) of the movable shaft seat is meshed with the gear (230);
a first limiting part (211) and a second limiting part (212) which are respectively arranged at the front end and the rear end of the rack (242) are arranged in the adjusting cavity, when the movable shaft seat (240) moves to the front end of the rack (242) to be abutted against the first limiting part (211), the eccentric distance between the eccentric shaft (241) and the rotating center of the eccentric wheel assembly is e1(ii) a When the movable shaft seat (240) moves to the rear end of the rack (242) and is abutted against the second limiting part (212), the eccentricity between the eccentric shaft (241) and the rotating center of the eccentric wheel assembly is e2，e2≠e1。
2. The massage drive mechanism of claim 1, wherein: the cross section of the output end of the motor (100) is D-shaped, a D-shaped hole (231) is formed in the center of the gear (230), and the gear is matched and installed with the output end of the motor (100) through the D-shaped hole (231).
3. The massage drive mechanism of claim 1, wherein: the upper portion of lower eccentric wheel (210) is equipped with the mounting groove, two wall surfaces of groove around the mounting groove are first spacing portion (211) and second spacing portion (212) respectively, gear (230) and rack (242) all are in the mounting groove.
4. The massage drive mechanism of claim 3, wherein: the left side groove wall and the right side groove wall of the installation groove respectively extend upwards to form a left connecting table (213) and a right connecting table (214), and the upper eccentric wheel (220) is arranged on the lower eccentric wheel (210) and is respectively connected with the left connecting table (213) and the right connecting table (214) through a connecting piece (221).
5. The massage drive mechanism of claim 4, wherein: the upper eccentric wheel (220) is provided with a U-shaped opening (222) which is positioned right above the mounting groove, the width of the U-shaped opening (222) is smaller than that of the mounting groove, the left connecting table (213), the right connecting table (214) and the upper eccentric wheel (220) jointly enclose a mounting space with a convex-shaped longitudinal section, and a shaft seat main body of the movable shaft seat (240) is arranged in the mounting space and in clearance fit with the mounting space.
6. The massage drive mechanism of claim 4, wherein: and a positioning structure matched with the lower eccentric wheel (210) is arranged on the upper eccentric wheel (220).
7. The massage drive mechanism of claim 6, wherein: the positioning structure is a bulge (223) arranged at the rear end of the bottom surface of the upper eccentric wheel (220), and the bulge (223) is embedded and matched between the rear end of the left connecting table (213) and the rear end of the right connecting table (214).
8. The massage drive mechanism as recited in any one of claims 1 to 7, wherein: the eccentric wheel assembly further comprises a bearing (250); the bottom of the lower eccentric wheel (210) is provided with a bearing hole, and the bearing (250) is arranged in the bearing hole; the output shaft (110) of the motor (100) is matched and installed with the inner hole of the bearing (250), and the output end of the motor (100) is the upper end of the output shaft (110).
9. The massage drive mechanism of claim 8, wherein: e.g. of the type1And e2The difference is 3-4 mm.
10. Fascia rifle, including the casing, its characterized in that: the massage driving mechanism as recited in any one of claims 1 to 9, further comprising a massage driving mechanism disposed in the housing, wherein the motor (100) is fixedly connected to the housing via a motor fixing bracket (120), and the piston rod (400) is movably connected to the housing via a sliding sleeve (410).
11. The fascia gun of claim 10, wherein: the master control board is also packaged; the shell is provided with a motor forward and reverse rotation control switch, and the motor (100) and the motor forward and reverse rotation control switch are respectively electrically connected with the main control board.
CN202111596172.6A 2021-12-24 2021-12-24 Massage driving mechanism and fascia gun Pending CN114028202A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111596172.6A CN114028202A (en) 2021-12-24 2021-12-24 Massage driving mechanism and fascia gun

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111596172.6A CN114028202A (en) 2021-12-24 2021-12-24 Massage driving mechanism and fascia gun

Publications (1)

Publication Number Publication Date
CN114028202A true CN114028202A (en) 2022-02-11

Family

ID=80141152

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111596172.6A Pending CN114028202A (en) 2021-12-24 2021-12-24 Massage driving mechanism and fascia gun

Country Status (1)

Country Link
CN (1) CN114028202A (en)

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