TW201924186A - Stator engagement structure - Google Patents

Abstract

A stator engagement structure is provided to solve the problem where the conventional stator cannot have a secure engagement effect. The stator engagement structure includes a base, a shaft tube mounted on the base, a silicon steel plate unit fit around the shaft tube, and an insulation sleeve coupled with the silicon steel plate unit. The insulation sleeve has a through-hole and is fit around the shaft tube via the through-hole. An inner periphery of the through-hole is spaced from an outer periphery of the shaft tube by a receiving gap. The receiving gap forms a receiving space. An adjoining end is formed on a bottom of the receiving space. The adjoining end is spaced from the outer periphery of the shaft tube by a minimal gap smaller than or equal to the receiving gap.

Description

Stator fixed structure

The present invention relates to a stator, and more particularly to a stator fixing structure in which a silicon steel sheet, an insulating sleeve and a shaft tube are combined.

The conventional motor or the cooling fan is provided with a stator which is tightly coupled to the outer wall of the shaft tube by a pair of steel sheets, or a gap is left between the sheet steel sheet and the shaft tube, and the gap is The adhesive is coated so that the silicon steel sheet set can be adhered to the shaft tube to prevent the steel sheet group from falling off the shaft tube.

However, since the stator steel sheet group of the stator is generally made of a metal material, when the steel sheet group of the stator is tightly coupled to the outside of the shaft tube, the silicon steel sheet group is likely to excessively press the shaft tube, thereby causing the shaft. The deformation of the tube affects the service life of the conventional motor or the cooling fan, and since the shaft tube is generally made of a plastic material, the expansion coefficient of the plastic material is larger than that of the metal material, so that the plastic material is susceptible to temperature changes and affects the dimensional stability. Further, the bonding stability between the silicon steel sheet group and the shaft tube is not good; or, when a gap is left between the silicon steel sheet group and the shaft tube, and the gap is coated with an adhesive, the silicon steel sheet is used. When the sleeve is set on the outer wall of the shaft tube, the adhesive is squeezed to make the adhesive flow downward, thereby affecting the stability of the joint.

In view of this, the conventional stator fixing structure does have a need for improvement.

In order to solve the above problems, the present invention provides a stator fixing structure which is a stator fixing structure having a better combined stability.

The following directionality or its similar terms, such as "before", "after", "upper (top)", "lower", "inside", "outside", "side", etc. The directionality or the singularity of the present invention is intended to be illustrative only and not to limit the invention.

The stator fixing structure of the present invention comprises: a base; a shaft tube disposed on the base; a steel sheet set tightly coupled to the outer peripheral wall of the shaft tube; and an insulating sleeve group coupled to the silicon steel sheet set The insulating sleeve has a through hole, and the through hole is sleeved in the shaft tube. The inner peripheral wall of the through hole and the outer peripheral wall of the shaft tube have a receiving gap, and the receiving gap forms an accommodating space. The bottom of the accommodating space has an abutting end, and the abutting end has a minimum gap with the outer peripheral wall of the shaft tube, and the minimum gap is less than or equal to the accommodating gap.

The stator fixing structure of the present invention comprises: a base; a shaft tube disposed on the base, the shaft tube has a joint end surface; a steel sheet set tightly coupled to the outer peripheral wall of the shaft tube; and an insulating sleeve And the insulating sleeve assembly has a through hole, and the through hole is sleeved in the shaft tube; wherein the coupling end surface of the shaft tube and the inner peripheral wall of the through hole have a receiving gap, The accommodating gap forms an accommodating space, and the bottom of the accommodating space has an abutting end, and the abutting end has a minimum gap between the insulating sleeve and the insulating sleeve, and the minimum gap is smaller than the accommodating gap.

According to the present invention, the stator fixing structure of the present invention has a minimum gap between the abutting end of the bottom of the accommodating space and the outer peripheral wall of the shaft tube or the insulating sleeve, and the minimum gap is less than or equal to the accommodating gap. The adhesive which flows down by the extrusion can be stored in the accommodating space, so that the shaft tube and the insulating sleeve can also be bonded to each other by the adhesive, thereby improving the shaft tube and the stellite steel. The bonding stability between the sheet set and the lower insulating sleeve.

The insulating sleeve has an upper insulating sleeve and a lower insulating sleeve, and the accommodating space is formed in the lower insulating sleeve. In this way, it has the effect of combining the shaft tube with the lower insulating sleeve.

Wherein, the shaft tube has an enlarged diameter section, and one end of the enlarged diameter section forms a first shoulder, and the silicon steel sheet set is positioned on the first shoulder. So, the system has the same The axial movement of the shaft tube.

The upper insulating sleeve has a first through hole, and the lower insulating sleeve has a second through hole, and the first through hole and the second through hole are sleeved on the shaft tube. In this way, it has the effect of being easy to combine.

Wherein, the second through hole has a minimum inner diameter greater than or equal to a maximum outer diameter of the enlarged diameter section. Thus, there is an effect that the lower insulating sleeve can be easily bonded to the outer peripheral wall of the shaft tube.

Wherein, the silicon steel sheet set has a perforation, and the silicon steel sheet set has a perforation, and the perforation is sleeved on the outer peripheral wall of the shaft tube. In this way, it has the effect of being easy to assemble.

Wherein, the minimum gap is much smaller than the accommodating gap, so that the abutting end of the bottom of the accommodating space is closer to the outer peripheral wall of the shaft tube. In this way, it has the effect of preventing the adhesive from flowing out.

Among them, the shaft tube is made of plastic material. Thus, it has the effect of being easily combined with the insulating sleeve.

Wherein, the shaft tube and the insulating sleeve set are made of the same material. In this way, the shaft tube and the insulating sleeve are combined by an adhesive.

Wherein, the accommodating space has an axial height a, and the end face of the lower insulating sleeve combined with the shaft tube has an axial height h and (1/5) h ≦ a ≦ (9/10) h. Thus, it has the effect of being able to inject enough adhesive and not overflow.

Wherein, the bottom of the accommodating space is inclined. Thus, it has the effect of ensuring that the adhesive system is placed in the accommodating space.

The second through hole defines a reaming hole below the bottom of the accommodating space, and the reaming hole forms an outer expansion angle with the shaft tube. In this way, it has the effect that the lower insulating sleeve can be more easily sleeved on the outer peripheral wall of the shaft tube.

Wherein, the accommodating space is for the adhesive to be accommodated. Thus, it has the effect of bonding the shaft tube to the insulating sleeve.

Among them, the adhesive is an adhesive for combining a plastic material and a plastic material. Thus, it has the effect of making the shaft tube and the insulating sleeve easy to bond.

The accommodating space is a ring groove shape. Thus, it has the effect of having a large bonding area.

Wherein, the accommodating space is a plurality of spaced grooves. In this way, it has the effect of being able to concentrate the bonding surface.

Wherein, the receiving gap is tapered from the top to the bottom, so that the bottom is the abutting end. In this way, the adhesive has an effect of being stuck in the minimum gap and solidifying and storing in the accommodating space.

Wherein, the receiving gap is tapered from the top to the bottom or is formed to be equidistant and then tapered, so that the bottom is the abutting end. In this way, the adhesive has an effect of being stuck in the minimum gap and solidifying and storing in the accommodating space.

1‧‧‧Base

2‧‧‧ shaft tube

21‧‧‧Expanded section

211‧‧‧First shoulder

22‧‧‧ Combined end face

23‧‧‧ accommodating space

24‧‧‧ bottom

24a‧‧‧Abutment

3‧‧‧矽Steel sheet group

31‧‧‧Perforation

4‧‧‧Insulation kit

4a‧‧‧Insulation sleeve

4b‧‧‧Insulation sleeve

40‧‧‧through hole

40a‧‧‧First through hole

40b‧‧‧second through hole

40b’‧‧‧ reaming

41‧‧‧ accommodating space

41’‧‧‧Ditch

42‧‧‧ bottom

42a‧‧‧Abutment

D1‧‧‧Maximum outer diameter

D2‧‧‧minimum inner diameter

α‧‧‧Extended angle

a‧‧‧Axial height of the accommodation space

h‧‧‧Axial height of the end face of the insulating sleeve combined with the shaft tube

F‧‧‧ accommodating gap

g‧‧‧Minimum clearance

Fig. 1 is an exploded perspective view showing a first embodiment of the present invention.

Fig. 2 is a sectional view showing the combination of the first embodiment of the present invention.

Figure 3: A partial enlarged view of Figure 2.

Figure 4: Another aspect of the bottom of the second embodiment of the present invention.

Fig. 5 is another view of the accommodating space of the first embodiment of the present invention.

Figure 6 is a partially enlarged cross-sectional view showing a third embodiment of the present invention.

Figure 7 is a partially enlarged cross-sectional view showing a fourth embodiment of the present invention.

Figure 8 is a partially enlarged cross-sectional view showing a fifth embodiment of the present invention.

Figure 9 is a sectional view showing the combination of the sixth embodiment of the present invention.

Figure 10: A partial enlarged view of Figure 9.

The above and other objects, features and advantages of the present invention will become more <RTIgt; Referring to FIG. 1 , which is a first embodiment of a stator fixing structure of the present invention, the stator fixing structure includes a base 1 , a shaft tube 2 , a silicon steel sheet set 3 and an insulating sleeve set 4 , and the shaft tube 2 is disposed. In the base 1, the silicon steel sheet set 3 is bonded to the outer peripheral wall of the shaft tube 2, and the insulating sleeve set 4 is coupled to the silicon steel sheet set 3.

Referring to Figures 1 and 2, the shaft tube 2 is disposed at the center of the base 1. The shaft tube 2 is made of a plastic material, and the shaft tube 2 is for mounting a shaft tube inner assembly, and the shaft tube inner assembly It can be various related components (such as bearings, wear plates, buckles or positioning rings, etc.) that can be installed on the shaft tube 2 and provide different functions. In addition, the shaft tube 2 has an enlarged diameter section 21, and the diameter is expanded. One end of the segment 21 forms a first shoulder portion 211, and the enlarged diameter portion 21 has a maximum outer diameter D1.

Referring to Figures 1 and 2, the silicon steel sheet set 3 is tightly coupled to the outer peripheral wall of the shaft tube 2 and positioned at the first shoulder portion 211 of the enlarged diameter section 21, wherein the silicon steel sheet set 3 has a The through hole 31 is sleeved on the outer peripheral wall of the shaft tube 2.

Referring to the first, second, and third figures, the insulating sleeve set 4 is coupled to the silicon steel sheet set 3, and the through hole 40 of the insulating sleeve set 4 is sleeved on the shaft tube 2, and the insulating sleeve set 4 and the shaft tube 2 are It is made of the same material. In particular, the insulating sleeve 4 can be formed by integrally assembling the silicon steel sheet set 3, or the upper and lower insulating sleeves can be respectively combined with the silicon steel sheet set 3, In an embodiment, the insulating sleeve 4 has an upper insulating sleeve 4a and a lower insulating sleeve 4b. The upper insulating sleeve 4a has a first through hole 40a, and the lower insulating sleeve 4b has a second through hole 40b. A through hole 40a and the second through hole 40b are sleeved on the shaft tube 2, and are respectively disposed at the lower end of the silicon steel sheet group 3 and clamped and fixed the silicon steel sheet group 3, and the insulating sleeve group 4 is insulated under the insulating sleeve 4b is positioned in the enlarged diameter section 21, and an accommodating gap f is formed between the inner peripheral wall of the second through hole 40b and the outer peripheral wall of the enlarged diameter section 21, and the accommodating gap f forms an accommodating space 41. The bottom portion 42 of the accommodating space 41 has an abutting end 42a, and the abutting end 42a has a minimum gap g between the outer peripheral wall of the shaft tube 2, The minimum gap g is much smaller than the accommodating gap f, so that the abutting end 42a of the bottom portion 42 of the accommodating space 41 is closer to the outer peripheral wall of the shaft tube 2.

Please refer to the first, third, and fifth views. The accommodating space 41 is a ring-shaped groove as shown in FIG. 1. Alternatively, the accommodating space 41 may be a plurality of spaced-apart grooves 41' as shown in FIG. The accommodating space 41 is used for the adhesive. The adhesive is preferably an adhesive for bonding a plastic material and a plastic material. The accommodating space 41 has an axial height a. The end face of the sleeve 4b combined with the shaft tube 2 has an axial height h and (1/5) h≦a≦(9/10)h, whereby sufficient adhesive can be injected and does not overflow, in addition, The lower insulating sleeve 4b is horizontally linear as shown in FIG. 3 at the bottom portion 42 of the accommodating space 41, and can be used to receive the adhesive.

Referring to FIGS. 2 and 3, the second through hole 40b has a minimum inner diameter D2 that is greater than or equal to the maximum outer diameter D1 of the enlarged diameter portion 21, and the second through hole 40b. A reaming hole 40b' is formed below the bottom portion 42 of the accommodating space 41, and the reaming hole 40b' forms an outer expansion angle α with the shaft tube 2, whereby the lower insulating sleeve 4b is assembled. It can be more easily sleeved on the outer peripheral wall of the shaft tube 2.

Referring to FIG. 3, according to the above configuration, when the silicon steel sheet set 3 is sleeved on the outer peripheral wall of the shaft tube 2, the adhesive applied to the outer peripheral wall of the silicon steel sheet group 3 may flow down to the The accommodating gap f, by which the minimum gap g is much smaller than the accommodating gap f, makes the abutting end 42a of the bottom portion 42 of the accommodating space 41 closer to the outer peripheral wall of the shaft tube 2, so that the squeezing The downflowing adhesive is stored in the accommodating space 41, so that the shaft tube 2 and the lower insulating sleeve 4b can also be bonded to each other by the adhesive, and since the shaft tube 2 and the insulating sleeve 4 are both The plastic material is made, so that a better bonding effect can be provided, thereby improving the bonding stability between the shaft tube 2, the silicon steel sheet set 3 and the lower insulating sleeve 4b, in particular, when When the minimum inner diameter D2 is equal to the maximum outer diameter D1 of the enlarged diameter section 21, the minimum gap g approaches zero, whereby the adhesive can be stored in the accommodating space 41.

Please refer to FIG. 4, which is a second embodiment of the stator fixing structure of the present invention. The second embodiment of the invention is substantially the same as the first embodiment described above, and the main difference is that the bottom portion 42 of the accommodating space 41 of the second embodiment of the present invention is a beveled surface as shown in FIG. . Therefore, when the silicon steel sheet set 3 is sleeved on the outer peripheral wall of the shaft tube 2, the adhesive applied to the outer peripheral wall of the silicon steel sheet set 3 flows downward to the receiving gap f by extrusion. The bottom portion 42 of the inclined surface can prevent the adhesive from flowing out, and ensure that the adhesive is stored in the accommodating space 41, so that the adhesive between the shaft tube 2 and the lower insulating sleeve 4b can be adhered to each other, thereby improving The coupling between the shaft tube 2, the silicon steel sheet set 3 and the lower insulating sleeve 4b is stable.

Referring to FIG. 6, which is a third embodiment of the stator fixing structure of the present invention, the third embodiment of the present invention is substantially the same as the first embodiment described above, and the main difference is that the minimum gap g is smaller than the capacity. The gap f is formed, and the accommodating gap f is tapered from the top to the bottom, so that the bottom portion 42 is the abutting end 42a such that the abutting end 42a does not contact the outer peripheral wall of the shaft tube 2. Thereby, when the silicon steel sheet set 3 is sleeved on the outer peripheral wall of the shaft tube 2, the adhesive applied to the outer peripheral wall of the shaft tube 2 flows downward due to the pressing, and flows through the receiving gap f to When the minimum gap g is reached, the adhesive is caught in the minimum gap g and solidified and stored in the accommodating space 41, so that the shaft tube 2 and the lower insulating sleeve 4b can be bonded to each other by the adhesive. This can improve the bonding stability between the shaft tube 2, the silicon steel sheet set 3 and the lower insulating sleeve 4b.

Referring to FIG. 7, which is a fourth embodiment of the stator fixing structure of the present invention, the fourth embodiment of the present invention is substantially the same as the first embodiment described above, and the main difference is that the minimum gap g is equal to the capacity. The gap f is formed, and the receiving gap f is equidistant from the top to the bottom, so that the bottom portion 42 is the abutting end 42a such that the abutting end 42a does not contact the outer peripheral wall of the shaft tube 2. Thereby, when the silicon steel sheet set 3 is sleeved on the outer peripheral wall of the shaft tube 2, the adhesive applied to the outer peripheral wall of the shaft tube 2 flows downward due to the pressing, and flows through the receiving gap f to The minimum gap g is solidified and stored in the accommodating space 41, so that the shaft tube 2 and the lower insulating sleeve 4b can be bonded to each other by the adhesive, thereby improving the shaft tube 2 and the silicon steel sheet group 3 The bonding stability with the lower insulating sleeve 4b.

Referring to FIG. 8, which is a fifth embodiment of the stator fixing structure of the present invention, the fifth embodiment of the present invention is substantially the same as the first embodiment described above, and the main difference is that the present embodiment is the shaft tube. The outer peripheral wall of the cover 2 is changed to form an accommodating space 23. In detail, the shaft tube 2 has a joint end surface 22, and the insulating sleeve 4b of the insulating sleeve set 4 is sleeved on the outer peripheral wall of the joint end surface 22. The accommodating gap 23 is formed between the end surface 22 and the lower insulating sleeve 4b. The accommodating space 23 has an accommodating space 23, and the bottom portion 24 of the accommodating space 23 has an abutting end 24a. There is a minimum gap g between the lower insulating sleeves 4b, and the minimum gap g is much smaller than the accommodating gap, whereby the adhesive flowing downward by the pressing can be stored in the accommodating space 23, so that the shaft tube 2 is The bonding end face 22 and the lower insulating sleeve 4b can be bonded to each other by the adhesive, thereby improving the bonding stability between the shaft tube 2, the silicon steel sheet set 3 and the lower insulating sleeve 4b.

Referring to Figures 9 and 10, which are a sixth embodiment of the stator fixing structure of the present invention, the sixth embodiment of the present invention is substantially the same as the fifth embodiment described above, and the main difference is that the minimum gap g is smaller than The accommodating gap f is formed by forming an equal distance from the top to the bottom, and the accommodating gap f can also be tapered from the top to the bottom, so that the bottom portion 24 is the abutment. The end 24a, whereby when the silicon steel sheet set 3 is sleeved on the outer peripheral wall of the shaft tube 2, the adhesive applied to the outer peripheral wall of the shaft tube 2 flows downward due to the pressing, and passes through the receiving gap. When the f flows to the minimum gap g, the adhesive is caught in the minimum gap g and solidified and stored in the accommodating space 23, so that the bonding end surface 22 of the shaft tube 2 and the lower insulating sleeve 4b can be used. Adhesives are bonded to each other, whereby the coupling stability between the shaft tube 2, the silicon steel sheet set 3 and the lower insulating sleeve 4b can be improved.

In summary, the stator fixing structure of the present invention has a minimum gap between the abutting end of the bottom of the accommodating space and the outer peripheral wall of the shaft tube or the lower insulating sleeve, and the minimum gap is less than or equal to the capacity. The gap is designed to store the adhesive flowing down by the extrusion in the accommodating space, so that the shaft tube and the lower insulating sleeve can also adhere to each other by the adhesive. Thereby, the coupling stability between the shaft tube, the silicon steel sheet set and the lower insulating sleeve can be improved.

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.

Claims (29)

A stator fixing structure comprises: a base; a shaft tube disposed on the base; a steel sheet set tightly coupled to the outer peripheral wall of the shaft tube; and an insulating sleeve group coupled to the silicon steel sheet set, The insulating sleeve has a through hole, and the through hole is sleeved in the shaft tube. The inner peripheral wall of the through hole and the outer peripheral wall of the shaft tube have a receiving gap, and the receiving gap forms an accommodating space. The bottom of the space has an abutting end with a minimum gap between the abutting end and the outer peripheral wall of the shaft tube, the minimum gap being less than or equal to the receiving gap. The stator fixing structure according to claim 1, wherein the insulating sleeve has an upper insulating sleeve and a lower insulating sleeve, and the accommodating space is formed in the lower insulating sleeve. The stator fixing structure of claim 2, wherein the shaft tube has an enlarged diameter section, and one end of the enlarged diameter section forms a first shoulder, and the silicon steel sheet set is positioned on the first shoulder. The stator fixing structure of claim 3, wherein the upper insulating sleeve has a first through hole, the lower insulating sleeve has a second through hole, the first through hole and the second through hole sleeve Located in the shaft tube. The stator fixing structure of claim 4, wherein the second through hole has a minimum inner diameter greater than or equal to a maximum outer diameter of the expanded diameter section. The stator fixing structure according to claim 1, wherein the silicon steel sheet set has a through hole which is sleeved on an outer peripheral wall of the shaft tube. The stator fixing structure according to claim 1, wherein the minimum gap is much smaller than the receiving gap, so that the abutting end of the bottom of the receiving space is closer to the outer peripheral wall of the shaft tube. The stator fixing structure according to claim 1, wherein the shaft tube is made of plastic Made of material. The stator fixing structure according to claim 1, wherein the shaft tube and the insulating sleeve are made of the same material. The stator fixing structure according to claim 2, wherein the accommodating space has an axial height a, and the end surface of the lower insulating sleeve and the shaft tube has an axial height h, and (1/5) )h≦a≦(9/10)h. The stator fixing structure according to claim 2, wherein the bottom of the accommodating space is a sloped surface. The stator fixing structure of claim 4, wherein the second through hole is formed with a reaming hole below the bottom of the accommodating space, and the reaming hole forms an outer expansion angle with the shaft tube. . The stator fixing structure according to claim 1, wherein the accommodating space is for the adhesive to be accommodated. The stator fixing structure according to claim 13, wherein the adhesive is an adhesive for combining a plastic material and a plastic material. The stator fixing structure according to claim 1, wherein the accommodating space is a ring groove shape. The stator fixing structure according to claim 1, wherein the accommodating space is a plurality of spaced grooves. The stator fixing structure of claim 1, wherein the receiving gap is tapered from top to bottom such that the bottom is the abutting end. A stator fixing structure comprising: a base; a shaft tube disposed on the base, the shaft tube having a joint end face; a set of steel sheets tightly coupled to the outer peripheral wall of the shaft tube; An insulating sleeve assembly is coupled to the silicon steel sheet set, the insulating sleeve set has a through hole, and the through hole is sleeved in the shaft tube; wherein a joint end surface of the shaft tube and an inner peripheral wall of the through hole have a capacity The accommodating gap forms an accommodating space, and the bottom of the accommodating space has an abutting end, and the abutting end has a minimum gap between the insulating sleeve and the insulating sleeve, and the minimum gap is smaller than the accommodating gap. The stator fixing structure according to claim 18, wherein the receiving gap is tapered from the top to the bottom or is formed to be equidistant and then tapered so that the bottom is the abutting end. The stator fixing structure according to claim 18, wherein the insulating sleeve has an upper insulating sleeve and a lower insulating sleeve, and the accommodating space is formed in the lower insulating sleeve. The stator fixing structure of claim 18, wherein the shaft tube has an enlarged diameter section, and one end of the enlarged diameter section forms a first shoulder, and the silicon steel sheet set is positioned on the first shoulder. The stator fixing structure of claim 20, wherein the upper insulating sleeve has a first through hole, the lower insulating sleeve has a second through hole, the first through hole and the second through hole sleeve Located in the shaft tube. The stator fixing structure according to claim 18, wherein the silicon steel sheet set has a through hole which is sleeved on an outer peripheral wall of the shaft tube. The stator fixing structure according to claim 18, wherein the shaft tube is made of a plastic material. The stator fixing structure according to claim 18, wherein the shaft tube and the insulating sleeve are made of the same material. The stator fixing structure according to claim 20, wherein the accommodating space has an axial height a, and the end surface of the lower insulating sleeve and the shaft tube has an axial height h, and (1/5) )h≦a≦(9/10)h. The stator fixing structure according to claim 22, wherein the second through hole is formed with a reaming hole below the bottom of the accommodating space, and the reaming hole forms an outer space with the shaft tube. Expansion angle. The stator fixing structure according to claim 18, wherein the accommodating space is for the adhesive to be accommodated. The stator fixing structure according to claim 28, wherein the adhesive is an adhesive for combining a plastic material and a plastic material.