TWI568146B - Motor shaft receiving assembly and fixing ring thereof - Google Patents

Description

Motor shaft assembly and its buckle

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a motor shaft assembly and a buckle thereof, and more particularly to a motor shaft assembly and a buckle thereof that can be applied to a motor for rotatably coupling a rotor of the motor and also prevent the rotor of the motor from coming off.

The conventional motor has a base, and the base is provided with a motor shaft assembly and a stator. The motor shaft assembly is rotatably coupled to a rotor for driving the rotor to rotate. The rotor has a rotating shaft, and a peripheral surface of the rotating shaft is provided with a buckle groove. The motor shaft joint assembly has a buckle, the rotating shaft can extend through the buckle, and the buckle is inserted into the buckle groove of the rotating shaft. To limit the rotation of the shaft only in the buckle and can not be detached.

Referring to FIG. 1 , a buckle 9 of a conventional motor shaft assembly is disclosed. The buckle 9 is mounted on a rotating shaft 90 , and the buckle 9 is provided with two first fixing portions 91 and two second fixing portions. The inner peripheral edge of the two first fixing portions 91 and the second fixing portions 92 are discontinuously formed with a through hole 93, and the two first fixing portions 91 and the second fixing portions 92 are formed separately. a notch 94, a crack 95 is formed between the two second fixing portions 92, and the crack 95 communicates with the through hole 93; thereby, the crack 95 and the notch 94 can be used to assist the opening of the through hole 93, so that the buckle The ring 9 can be smoothly inserted into one of the buckle slots 901 of the rotating shaft 90. An embodiment similar to the conventional buckle 9 has been disclosed in the "Motor Assembly and Buckle" patent of the Republic of China No. M335089.

In order to ensure that the above-mentioned conventional buckle 9 can be smoothly mounted on the above-mentioned rotating shaft 90, the retaining ring 9 must have the design of the above-mentioned crack 95 and the above-mentioned notch 94, whereby the crack 95 and the notch 94 can be used to assist the above-mentioned expansion. A perforation 93 is provided for the shaft 90 to extend through the perforation 93. However, referring to FIG. 1 again, since the notch 94 is located between the first fixing portion 91 and the second fixing portion 92 and is formed on the inner periphery of the through hole 93, the inside of the through hole 93 is caused. The contour shape of the circumference (ie, the shape of the circular hole) is largely destroyed. When the buckle 9 is attached to the rotating shaft 90, the buckle 9 can only utilize the inside of the first fixing portion 91 and the second fixing portion 92. The buckle 901 is fastened between the plurality of notches 94 of the buckle 9 and the buckle groove 901 of the rotating shaft 90, so that the buckle 9 has a poor holding effect. .

The present invention provides a motor shaft joint assembly having a buckle for solving the problem that the conventional buckle retaining effect is not good.

The invention provides a buckle of a motor shaft joint assembly, which can greatly maintain the contour shape integrity of the inner circumference of the perforation to improve the overall fastening effect.

The motor shaft assembly of the present invention comprises at least a shaft tube, a shaft tube inner component, a rotating shaft and a buckle. The shaft tube is provided with a receiving hole; the shaft tube inner component comprises at least one bearing, the bearing is disposed on the receiving hole; the rotating shaft rotatably couples the bearing, and the outer peripheral surface of the rotating shaft is provided with a buckle groove; The ring is coupled to the buckle groove of the rotating shaft, the buckle has an inner circumference and an outer circumference, the inner circumference surrounds a through hole, the outer circumference is provided with a notch, and the buckle is provided with a crack from the outer circumference Extending to the inner circumference and communicating the perforation; wherein, in a radial direction of the rotating shaft, the buckle has a reference line passing through the center, and the notch of the buckle is located on the same reference line as the crack, and the gap is The cracks are respectively located on the outer circumferences of the opposite sides of the buckle.

Wherein, an active slot is disposed between the inner circumference and the outer circumference of the buckle; The crack passes through the active slot.

Wherein, the outer circumference of the buckle is provided with a plurality of auxiliary notches between the crack and the notch.

The shaft tube has an opposite open end and a closed end, and the receiving hole is disposed between the open end and the closed end.

The motor shaft joint assembly of the present invention can ensure that the inner peripheral contour of the perforation of the buckle is not largely damaged by providing the notch on the outer circumference of the buckle to retain the contour shape integrity of the inner circumference of the perforation. In order to achieve the effect of improving the holding effect.

〔this invention〕

1‧‧‧ shaft tube

11‧‧‧Open end

12‧‧‧closed end

13‧‧‧ accommodating holes

2‧‧‧Shaft tube components

21‧‧‧ bearing

3‧‧‧ shaft

31‧‧‧ buckle groove

4‧‧‧ buckle

41‧‧‧ inner circumference

42‧‧‧ outer periphery

43‧‧‧Perforation

44‧‧‧ gap

45‧‧‧ crack

46‧‧‧ Activity slot

47‧‧‧Auxiliary gap

5‧‧‧Motor structure

51‧‧‧Base

52‧‧‧ Stator

53‧‧·wheels

L‧‧‧ baseline

[study]

9‧‧‧ buckle

90‧‧‧ shaft

901‧‧‧ buckle groove

91‧‧‧First Fixed Department

92‧‧‧Second fixed department

93‧‧‧Perforation

94‧‧‧ gap

95‧‧‧ crack

Fig. 1 is a top plan view showing a combination of a buckle of a conventional motor shaft assembly and a rotating shaft.

Fig. 2 is a sectional view showing the combination of the motor shaft joint assembly of the present invention.

Fig. 3 is a perspective view showing the buckle of the motor shaft assembly of the present invention.

Fig. 4 is a sectional view showing the combination of the motor shaft assembly of the present invention applied to a motor.

Fig. 5 is a reference view showing the state of use of the buckle of the motor shaft joint assembly of the present invention when the rotary shaft is forced into the shaft.

Fig. 6 is a top plan view showing the buckle of the motor shaft joint assembly of the present invention after the shaft is passed through.

Figure 7 is a perspective view showing another aspect of the buckle of the motor shaft assembly of the present invention.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

Referring to Figures 2 and 3, the motor shaft assembly of the present invention comprises at least a shaft tube 1, a shaft tube inner component 2, a shaft 3 and a buckle 4. The shaft tube inner component 2 is disposed inside the shaft tube 1; the rotating shaft 3 rotatably couples the shaft tube inner component 2, the buckle 4 The rotating shaft 3 is coupled to limit the rotation of the rotating shaft 3 only inside the shaft tube 1 and cannot be disengaged.

The above-mentioned shaft tube 1 may be a hollow tube body of various shapes. In this embodiment, the shaft tube 1 is a hollow tube, and the shaft tube 1 has an opposite end 11 and a closed end 12. The receiving end 11 and the closed end 12 are provided with a receiving hole. 13.

The shaft tube inner component 2 includes at least one bearing 21 for rotatably coupling the rotating shaft 3, for example, a ball bearing or an oil bearing, or the like; or the shaft tube inner component 2 may also include, for example, a dustproof sheet and an oil barrier. A member such as a sheet or a wear sheet can be understood by those skilled in the art, and the invention is not limited. In this embodiment, the shaft tube inner component 2 includes two bearings 21, and the two bearings 21 are coupled to the receiving holes 13 of the shaft tube 1.

The shaft 3 is rotatably coupled to the bearing 21 of the shaft tube inner component 2 via the open end 11 of the shaft tube 1. The outer peripheral surface of the rotating shaft 3 is provided with a buckle groove 31 for the above-mentioned buckle 4 to be combined.

Referring to FIG. 3 , the buckle 4 has an inner circumference 41 and an outer circumference 42 . The inner circumference 41 defines a through hole 43 . The outer circumference 42 defines a notch 44 . Further, the retaining ring 4 is further provided with a slit 45 extending from the outer peripheral edge 42 to the inner peripheral edge 41 and communicating with the through hole 43.

Referring to FIG. 4, in the actual use of the motor shaft joint assembly of the present invention, the shaft tube 1 is integrally or detachably coupled to a base 51, and the outer peripheral wall of the shaft tube 1 can be combined with a stator. 52. The rotating shaft 3 is located at one end of the outer side of the shaft tube 1 and can be coupled with a hub 53 having a permanent magnet. The stator 52 can drive the hub 53 to rotate, thereby forming a motor structure 5. The buckle 4 can be inserted into the buckle groove 31 of the rotating shaft 3 to limit the rotation of the rotating shaft 3 to the inside of the shaft tube 1 and can not be arbitrarily detached, and the limiting action of the buckle 4 is utilized. In order to prevent the shaft 3 from coming off the shaft tube 1.

Referring to FIG. 5, the manner in which the buckle 4 is fitted into the buckle groove 31 of the rotating shaft 3 is mainly extended by the retaining ring 4 from the outer peripheral edge 42 to the inner portion. The crack 45 of the peripheral edge 41 is designed such that the retaining ring 4 can be outwardly extended toward the opposite sides of the outer peripheral edge 42 (i.e., opposite sides of the reference line L as shown). The notch 44 of the outer peripheral edge 42 is designed such that the outer ring 42 of the outer peripheral edge 42 can be deformed to be deformed so that the rotating shaft 3 can smoothly penetrate and penetrate through the through hole 43; as shown in FIG. It can be seen that after the buckle 31 of the rotating shaft 3 is located at the inner periphery 41 of the buckle 4, the buckle 4 can be restored to the original shape. At this time, the rotating shaft 3 can be restricted to rotate only inside the shaft tube 1 and cannot be arbitrarily . . . Therefore, since the notch 44 for assisting the fastening of the buckle 4 is located on the outer periphery 42, the contour shape of the inner periphery 41 of the buckle 4 can be ensured not to be greatly damaged, and only the crack 45 is slightly Affecting the contour shape thereof, the shape integrity of the through hole 43 (for example, a circular hole shape) can be substantially retained, so that an approximate circumference can be formed between the inner peripheral edge 41 of the through hole 43 of the buckle 4 and the buckle groove 31 of the rotating shaft 3. The buckle-like action of the shape further enhances the fastening effect of the buckle 4.

Further, referring to FIGS. 3 and 5, in the radial direction of the rotating shaft 3, the retaining ring 4 has a reference line L passing through the center, and the notch 44 of the retaining ring 4 is preferably opposed to the slit 45. Located on the same baseline L. Thereby, when the buckle 4 is outwardly extended in the opposite sides of the crack 45, the notch 44 located in the opposite direction of the crack 45 can be more advantageous for assisting the deformation of the outer periphery 42 of the buckle 4. Therefore, the rotating shaft 3 can be more easily forced into and penetrated through the through hole 43 to improve the assembly convenience of the rotating shaft 3.

Further, referring to FIG. 3, a movable groove 46 is preferably provided between the inner peripheral edge 41 and the outer peripheral edge 42 of the buckle 4, and the slit 45 passes through the movable groove 46. With the design of the movable slot 46, the buckle 4 can be more easily extended outward in the opposite sides of the slit 45 during the process of the above-mentioned rotating shaft 3 being forced into the through hole 43, ensuring the buckle 4 It has a better deformation effect to avoid damage to the buckle 4, thereby improving the service life of the buckle 4.

Moreover, referring to FIG. 3, it is preferable that the outer peripheral edge 42 of the buckle 4 is provided with a plurality of auxiliary notches 47 between the crack 45 and the notch 44. With the design of the auxiliary notch 47, when the buckle 4 is outwardly extended in the opposite sides of the slit 45, the The notch 44 and the plurality of auxiliary notches 47 can simultaneously provide a better deformation effect of the outer periphery 42 of the buckle 4, so that the rotating shaft 3 can be more easily forced into and penetrated through the through hole 43 to further improve assembly convenience. Sex. Moreover, as shown in FIG. 7, the buckle 4 of the present invention may also choose to omit the plurality of auxiliary notches 47, so that the shape of the buckle 4 is more compact and does not occupy space, in other words, the appearance shape of the buckle 4 of the present invention. There are no restrictions.

In summary, the contour shape of the inner circumference of the perforation 93 of the conventional buckle 9 as shown in FIG. 1 is easily damaged by the notch 94; the motor shaft assembly of the present invention mainly adopts the above-mentioned gap. 44 is disposed on the outer periphery 42 of the buckle 4, whereby the notch 44 still has the basic function of assisting the opening of the through hole 43, and the notch 44 of the outer periphery 42 is designed to ensure the buckle 4 The contour of the inner circumference 41 is not greatly damaged to retain the contour shape integrity of the inner circumference 41 of the perforation 43, thereby achieving the effect of improving the fastening effect of the buckle 4.

While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope of the invention is protected, and therefore the scope of the invention is defined by the scope of the appended claims.

4‧‧‧ buckle

41‧‧‧ inner circumference

42‧‧‧ outer periphery

43‧‧‧Perforation

44‧‧‧ gap

45‧‧‧ crack

46‧‧‧ Activity slot

47‧‧‧Auxiliary gap

L‧‧‧ baseline

Claims (7)

A motor shaft assembly comprises: a shaft tube, the shaft tube is provided with a receiving hole; a shaft tube is provided with a component, the shaft tube inner component comprises at least one bearing, the bearing is disposed on the receiving hole; The rotating shaft is rotatably coupled to the bearing, and the outer peripheral surface of the rotating shaft is provided with a buckle groove; and a buckle is coupled to the buckle groove of the rotating shaft, the buckle has an inner circumference and an outer circumference, and the inner circumference surrounds Forming a perforation, the outer periphery is provided with a notch, and the buckle is provided with a slit extending from the outer periphery to the inner circumference and communicating the perforation; wherein the buckle has a radial direction in the rotating shaft Through a reference line of the center, the notch of the buckle is located on the same reference line as the crack, and the notch and the crack are respectively located on the outer circumferences of the opposite sides of the buckle. The motor shaft joint assembly of claim 1, wherein an active groove is formed between the inner circumference and the outer circumference of the buckle, and the crack passes through the movable groove. The motor shaft joint assembly of claim 1, wherein the outer circumference of the buckle is provided with a plurality of auxiliary notches between the crack and the notch. The motor shaft joint assembly of claim 1, wherein the shaft tube has an opposite open end and a closed end, and the receiving hole is disposed between the open end and the closed end. . A buckle of a motor shaft joint assembly, the buckle ring having an inner circumference and an outer circumference, the inner circumference surrounding forming a through hole, the outer circumference is provided with a notch, and the buckle is provided with a crack from the outer circumference Extending to the inner circumference and communicating the perforation; wherein, in a radial direction, the buckle has a reference line passing through the center, the lack The mouth and the crack are located on the same reference line, and the gap and the crack are respectively located on the outer circumferences of the opposite sides of the buckle. The buckle of the motor shaft assembly according to claim 5, wherein a movable groove is disposed between the inner circumference and the outer circumference, and the crack passes through the movable groove. The buckle of the motor shaft assembly according to claim 5, wherein the outer periphery is provided with a plurality of auxiliary notches between the crack and the notch.