CN210431106U

CN210431106U - Direct current brushless motor actuating mechanism and manadesma rifle

Info

Publication number: CN210431106U
Application number: CN201921360887.XU
Authority: CN
Inventors: 敖琼瑶
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-20
Filing date: 2019-08-20
Publication date: 2020-04-28
Anticipated expiration: 2029-08-20
Also published as: KR102465699B1; KR20210023724A

Abstract

The utility model provides a brushless DC motor actuating mechanism and manadesma rifle, include: the base is provided with a support column at the center, a first boss is arranged in the middle of the support column, and a through hole is formed in the support column; the motor assembly comprises a motor output shaft, a stator, a rotor and a motor drive plate, wherein the motor output shaft is fixedly connected with the base through a first bearing arranged at the upper end of the through hole and a second bearing arranged at the lower end of the through hole; the eccentric wheel is provided with an eccentric column and is pinned at the upper end of the output shaft of the motor; the driving assembly comprises a push rod and a rotating bearing, wherein the push rod is of a bending structure, and the rotating bearing is fastened in the push rod and is connected with the eccentric column. The integrated base, the bending push rod and the motor driving mechanism are adopted, so that the whole structure is compact and stable, the heat dissipation of the motor is facilitated, and the working efficiency of the motor is improved.

Description

Direct current brushless motor actuating mechanism and manadesma rifle

Technical Field

The utility model relates to a direct current brushless motor field, in particular to direct current brushless motor actuating mechanism suitable for manadesma rifle.

Background

At present, after body building or exercise, sympathetic nerves are over excited, so that muscles are still over stressed in a static state, fascia adhesion is generated, and recovery of growth is influenced. When fascia is attached or injured, the body often experiences many uncomfortable reactions: stiffness, rigidity and tightness of muscles; the muscle tissue is loose, and there are irregular block-shaped or cord-shaped hard tissues in the deep muscle layer and between the bone seams. In this case, relaxation of muscles, particularly deep muscles, is particularly important. The fascia gun relaxes muscles and fascia much more deeply and precisely than we relax daily using a foam shaft. With the society developing rhythm becoming faster and faster, body-building is not limited to indoor, and outdoor body-building is more and more common, and the use and the convenient carrying of body-building and health-care tools are a problem that needs attention. Most of the existing fascial guns have a certain volume, and for the existing body building enthusiasts, a fascial gun which is compact and stable in structure, small in volume and good in heat dissipation is more and more popular, and the main factor for determining the volume of the fascial gun is a motor driving mechanism in the fascial gun. Among the current motor drive mechanism, the base of motor and the mounting panel of motor are separately installed, and the motor is fixed on the mounting panel, and this kind of result is unfavorable for the motor heat dissipation, influences motor efficiency, and the structure is comparatively complicated, and is difficult for not hard up, easily pine takes off to high-frequency vibration class product very much. In addition, the push-out connecting rod of the motor is installed in a linear mode, so that the size is directly increased, and the compact design of the whole structure of a product is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model provides a brushless DC motor actuating mechanism and manadesma rifle through adopting integral type base and the formula push rod of bending to and the inseparable cooperation between each subassembly, can effectively solve above-mentioned problem.

The utility model discloses a realize like this:

a direct current brushless motor driving mechanism comprises a base, wherein a support column is arranged at the center of the base, a first boss is arranged in the middle of the support column, and a first through hole is formed in the support column; the motor assembly comprises a motor output shaft, a stator, a rotor and a motor drive plate, the motor output shaft is fixedly connected with the base through a first bearing arranged at the upper end of the first through hole and a second bearing arranged at the lower end of the first through hole, the stator is fastened on the first boss, the rotor is tightly connected with the output end of the motor output shaft through a switching assembly, a gap is formed between the rotor and the base, and the motor drive plate is fixed in the base; the eccentric wheel is provided with an eccentric column and is in pin joint with the upper end of the output shaft of the motor; the driving assembly comprises a push rod, a rotating bearing and a fixing assembly, wherein the push rod is of a bending structure, and the rotating bearing is sleeved on the eccentric column and fastened in the push rod.

Further, the interval between the lower end of the rotor and the base is 3-9 mm.

Further, the rotor is one end open-ended circular casing form, the rotor center is equipped with the second through-hole, the second through-hole cup joints on the motor output shaft, just evenly be provided with the notch on the second through-hole, the switching subassembly includes the rubber buffer, the rubber buffer inboard with the motor output shaft closely overlaps establishes and links to each other, and the outside with the second through-hole block to through passing the round pin post the notch is realized the rotor with the output fixed connection of motor output shaft.

Furthermore, the fixing component comprises a fixing frame and a bolt, the middle of the fixing frame is raised, supporting legs on two sides of the fixing frame are fixedly locked on the push rod and tightly press the outer ring of the rotating bearing, and the inner ring of the rotating bearing is fixedly connected with the eccentric column through the bolt.

Furthermore, the push rod is provided with a hollow groove.

Further, the push rod formula forming structure as an organic whole includes: the connecting part of the first straight line part and the second straight line part forms an obtuse angle, and the first straight line part and the third straight line part are parallel.

Further, the obtuse angle range is 120-135 degrees.

Further, the thickness of the second straight line portion is larger than that of the first straight line portion.

Further, a fascia gun comprises the direct current brushless motor driving mechanism.

The utility model has the advantages that: the integrated base is adopted as the fixed base and the bottom shell of the motor, so that the overall structure of the motor is compact and simple; the interval is arranged between the base and the motor body, so that the heat dissipation of the motor is facilitated, and the working efficiency of the motor is ensured; the motor output end is connected with the bending type pushing connecting rod, so that the size of the motor driving mechanism is further reduced, and the motor driving mechanism is more compact.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a front view of a dc brushless motor driving mechanism according to an embodiment of the present invention;

fig. 2 is an exploded view of a dc brushless motor driving mechanism according to an embodiment of the present invention;

fig. 3 is a schematic view of a base provided in an embodiment of the present invention;

fig. 4 is a cross-sectional view of the motor output shaft installed in the base according to the embodiment of the present invention;

fig. 5 is a schematic structural diagram of a rotor provided by an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a driving assembly according to an embodiment of the present invention;

fig. 7 is a front view of a dc brushless motor driving mechanism according to an embodiment of the present invention;

the corresponding part names for the various reference numbers in the figures are: 1. a base; 10. a support pillar; 11. a first boss; 12. a first through hole; 13. a second boss; 130. a protrusion; 14. a notch; 15. a fixing hole; 16, reinforcing ribs; 17. a fixing member; 100. a circular boss; 2. a motor assembly; 21. an output shaft of the motor; 22. a stator; 23. a rotor; 24. a motor drive plate; 25. a switching component; 211. a first bearing; 212. a second bearing; 213. a groove; 214. a first snap ring; 215. L-shaped seam allowance; 231. a second through hole; 232. a recess; 233. the open end of the rotor 23; 251. a rubber plug; 26. a second snap ring; 3. an eccentric wheel; 31. an eccentric column; 4. a drive assembly; 41. a push rod; 42. a rotating bearing; 43. a fixing assembly; 431. a fixed mount; 432. and (4) bolts.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The present invention will be described in further detail with reference to the accompanying drawings.

In the embodiment of the present invention, referring to fig. 1, fig. 2 and fig. 3, a dc brushless motor driving mechanism includes a base 1, a supporting column 10 is disposed at the center of the base 1, a first boss 11 is disposed in the middle of the supporting column 10, and a first through hole 12 is disposed inside the supporting column 10; the motor assembly 2 comprises a motor output shaft 21, a stator 22, a rotor 23 and a motor drive plate 24, wherein the motor output shaft 21 is fixedly connected with the base 1 through a first bearing 211 arranged at the upper end of the first through hole 12 and a second bearing 212 arranged at the lower end of the first through hole, the stator 22 is fastened on the first boss 11, the rotor 23 is tightly connected with the output end of the motor output shaft 21 through a switching assembly 25, and a gap is formed between the lower end of the rotor 23 and the base 1; the motor driving plate 24 is fixed in the base 1; the eccentric wheel 3 is provided with an eccentric column 31, and the eccentric wheel 3 is in pin joint with the upper end of the motor output shaft 21; the driving assembly 4 comprises a push rod 41, a rotating bearing 42 and a fixing assembly 43, wherein the push rod 41 is of a bending structure, and the rotating bearing 42 is sleeved on the eccentric column 31 and fastened in the push rod 41.

Referring to fig. 2, the base 1 is disc-shaped, a second boss 13 is disposed in a side wall of the base, and the motor driving plate 24 is fixed to the second boss 13. Specifically, a protrusion 130 is arranged on the second boss 13, a notch 14 is arranged on the base 1 body, a notch and a protrusion are arranged on the motor drive plate 24 and are matched with the protrusion 130 and the notch 14, the motor drive plate 24 is placed on the base 1, and the matching structure is used for limiting the motor drive plate 24. In addition, the second boss 13 is symmetrically provided with fixing holes 15 in the direction close to the center of the base 1, the fixing holes 15 have the same height as the second boss 13, a round hole is provided at a position corresponding to the motor driving board 24, and the fixing holes 15 and the round hole on the motor driving board 24 are fixed by inserting bolts, so that the motor driving board 24 is fixed on the base 1. Reinforcing ribs 16 are further arranged in the bottom of the base 1, for example, two groups of reinforcing ribs are vertically arranged, and the supporting column 10 is located at the central intersection of the reinforcing ribs 16. The reinforcing rib 16 has the effect of reinforcing base 1 supporting force, makes base 1 is more firm, and still with this body one-tenth cavity of base 1 more does benefit to the heat dissipation. The outer side of the base 1 is uniformly provided with fixing pieces 17, for example, four groups of fixing pieces can be arranged, the fixing pieces 17 are provided with round holes, and a damping washer can be sleeved in the round holes, and the fixing pieces 17 are used for fixing the motor assembly on the fascia gun.

Referring to fig. 3 and 4, a circular boss 100 is further disposed in the middle of the inner side of the support pillar 10, the circular boss 100 is located inside the support pillar 10 and belongs to the integrated structure of the base 1, the first bearing 211 is disposed on the upper surface of the circular boss 100, the second bearing 212 is disposed on the lower surface of the circular boss 100, and the first bearing 211, the second bearing 212 and the base 1 are fixed in a stamping manner. A groove 213 is formed in the motor output shaft 21 below the second bearing 212, and a first snap ring 214 is arranged on the groove 213 and used for limiting the second bearing 212. Base 1 can be aluminum alloy integral type die-casting structure, and stable in structure is firm, also is difficult not hard up under the high-frequency vibration condition. The base 1 adopts an integrated structure, so that some problems caused by the fact that an existing motor and an installation base are separately installed are avoided, for example, the heat dissipation is poor, the structure is complex and the looseness is easy to occur. The integrated structure of the base 1 enables the motor to be good in heat dissipation and firm in structure, and prolongs the service life of the motor.

Referring to fig. 2 and 3, the stator 22 is a silicon steel lamination, a coil is wound inside the silicon steel lamination, the stator 22 is fastened on the first boss 11, specifically, the stator 22 and the first boss 11 are fixed together by stamping, and a through hole is formed in the center of the stator 22.

Referring to fig. 5, the rotor 23 is in the shape of a circular shell with an opening at one end, and a ring of permanent magnets is attached to the inner side wall of the rotor 23, so that the "rotor" is substantially the permanent magnet interacting with the stator 22 relative to the stator 22. An interval (as shown in fig. 7) is formed between the open end (233, as shown in fig. 7) of the rotor 23 and the base 1, which is beneficial to heat dissipation of the motor. The rotor 23 is provided with a second through hole 231 at the center. Notches 232 are uniformly arranged on the second through holes 231. The adaptor assembly 25 includes a rubber plug 251 (refer to fig. 2 and 4), the inner side of the rubber plug 251 is tightly sleeved with the motor output shaft 21, and the outer side of the rubber plug 251 is engaged with the second through hole 231, since the outer side of the rubber plug 251 has a groove, the second through hole 231 can be engaged with the groove on the outer side of the rubber plug 251, two sides of the groove can be tightly adhered to the second through hole 231, a pin can be inserted into the notch 232, and the rotor 23 and the rubber plug 251 are further fixed to fixedly connect the rotor 23 and the motor output shaft 21.

Referring to fig. 4, the upper end of the supporting column 10 and the upper end of the first bearing 211 are flush, and a second snap ring 26 is disposed between the upper end of the first bearing 211 and the lower end of the rubber plug 251, so as to achieve the shock absorption and limiting effects between the rubber plug 251 and the first bearing 211.

Referring to fig. 2 and 4, the output end of the motor output shaft 21 is in an L-shaped spigot shape and is provided with an L-shaped spigot 215, and the eccentric wheel 3 is pinned to the upper end (the middle part of the L-shaped spigot 215) of the motor output shaft 21 and is placed on the horizontal plane of the L-shaped spigot 215. Referring to fig. 2, an eccentric column 31 is disposed on the eccentric wheel 3, and the rotating bearing 42 is sleeved on the eccentric column 31 and fastened in the push rod 41.

The fixing component 43 includes a fixing frame 431 and a bolt 432, the middle of the fixing frame 431 protrudes, the supporting legs at two sides of the fixing frame 431 are locked on the push rod 41 and tightly press the outer ring of the rotating bearing 42, and the inner ring of the rotating bearing 42 is fixedly connected with the eccentric column 31 through the bolt 432.

Referring to fig. 6, the push rod 41 is provided with a hollow groove 414, so that compared with a solid structure, the requirement of a supporting force can be met, materials can be saved, and the manufacturing cost can be reduced. The push rod 41 is of an integrally molded structure and comprises a first straight line part 411, a second straight line part 412 and a third straight line part 413, an angle range of a joint of the first straight line part 411 and the second straight line part 412 is 120-135 degrees, the first straight line part 411 and the third straight line part 413 are parallel, the thickness of the second straight line part 412 is larger than that of the first straight line part 411, and higher strength can be borne. Because the existing push rod is usually in a linear structure, the whole volume of the motor is large, and the linear push rod extends outwards more. And adopt the bending type push rod, wholly will dwindle inwards for the complete machine structure is compacter.

The embodiment of the utility model provides a specially adapted fascia rifle, its inside including a direct current brushless motor actuating mechanism that this embodiment provided. It should be understood that the fascia gun directly acts on the muscle through the massage rod thereon, and the output front end of the push rod 41 is connected with the massage rod of the fascia gun for driving the massage rod to work.

The utility model discloses the theory of operation is: the motor drive board rotates under the action of an electromagnetic field by controlling the change of the current direction in the stator silicon steel lamination winding coil, the rotor drives the motor output shaft to rotate, the first bearing and the second bearing are used for fixing the motor output shaft, the motor output shaft drives the eccentric wheel to rotate, the eccentric column on the eccentric wheel is connected with the bending push rod, and therefore the bending push rod moves to drive the massage rod on the fascia gun to move back and forth.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A dc brushless motor drive mechanism, comprising:

the device comprises a base (1), wherein a supporting column (10) is arranged at the center of the base (1), a first boss (11) is arranged in the middle of the supporting column (10), and a first through hole (12) is formed in the supporting column (10);

the motor component (2) comprises a motor output shaft (21), a stator (22), a rotor (23) and a motor drive plate (24),

the motor output shaft (21) is fixedly connected with the base (1) through a first bearing (211) arranged at the upper end of the first through hole (12) and a second bearing (212) arranged at the lower end of the first through hole,

the stator (22) is fastened to the first boss (11),

the rotor (23) is tightly connected with the output end of the motor output shaft (21) through a switching component (25), a gap is arranged between the lower end of the rotor (23) and the base (1),

the motor driving plate (24) is fixed in the base (1);

the eccentric wheel (3) is provided with an eccentric column (31), and the eccentric wheel (3) is in pin joint with the upper end of the motor output shaft (21);

the driving component (4) comprises a push rod (41), a rotating bearing (42) and a fixing component (43),

the push rod (41) is of a bending structure,

the rotating bearing (42) is sleeved on the eccentric column (31) and fastened in the push rod (41).

2. A dc brushless motor driving mechanism according to claim 1, characterized in that the space between the lower end of the rotor (23) and the base (1) is 3-9 mm.

3. The direct-current brushless motor driving mechanism according to claim 1, wherein the rotor (23) is a circular shell with an open end, a second through hole (231) is formed in the center of the rotor (23), the second through hole (231) is sleeved on the motor output shaft (21), a notch (232) is uniformly formed in the second through hole (231), the switching assembly (25) comprises a rubber plug (251), the inner side of the rubber plug (251) is tightly sleeved with the motor output shaft (21) and is connected with the motor output shaft (21), the outer side of the rubber plug is clamped with the second through hole (231), and the pin column penetrates through the notch (232) to achieve the connection between the rotor (23) and the output end of the motor output shaft (21).

4. The brushless DC motor driving mechanism according to claim 1, wherein the fixing assembly (43) comprises a fixing frame (431), a bolt (432),

the middle of the fixing frame (431) is protruded, supporting legs at two sides of the fixing frame are fixedly locked on the push rod (41) and tightly press the outer ring of the rotating bearing (42), and the inner ring of the rotating bearing (42) is fixedly connected with the eccentric column (31) through the bolt (432).

5. The brushless DC motor driving mechanism according to claim 1, wherein the push rod (41) is provided with a hollowed-out slot (414).

6. The brushless DC motor driving mechanism according to claim 5, wherein the push rod (41) is a one-piece molded structure comprising: the connecting structure comprises a first straight line part (411), a second straight line part (412) and a third straight line part (413), wherein the connecting part of the first straight line part (411) and the second straight line part (412) forms an obtuse angle, and the first straight line part (411) is parallel to the third straight line part (413).

7. The brushless dc motor driving mechanism according to claim 6, wherein the obtuse angle is 120 to 135 degrees.

8. The brushless dc motor driving mechanism according to claim 7, wherein the second linear portion (412) has a thickness greater than that of the first linear portion (411).

9. Fascia gun, comprising a dc brushless motor drive according to any of claims 1-8.