CN217545741U - Electric machine - Google Patents

Abstract

The utility model discloses a motor, the motor includes the end cover and the casing that link to each other and locate the sealing member between end cover and the casing, the sealing member includes the sealing member body, the ascending relative both sides of thickness side of sealing member body are the protrusion respectively and are provided with first reference column and second reference column, through-hole and through-hole link up the second reference column have been seted up on the sealing member body, be provided with first fastening hole and first locating hole on the end cover, be provided with the second fastening hole on the casing, the fastener is worn to establish in first fastening hole, the second fastening hole, with fixed connection end cover and casing in the through-hole, first reference column and first locating hole cooperation, second reference column and second fastening hole cooperation. According to the utility model discloses motor, the operating personnel of being convenient for are fixed a position the sealing member between end cover and casing, improve sealed effect.

Description

Electric machine

Technical Field

The utility model belongs to the technical field of the motor seal and specifically relates to a motor is related to.

Background

The sealing of motors such as servo motors generally requires more than IP65, and the sealing protects the interior of the motor from being damaged by environment invasion under certain dust, oil and gas environments. The design reliability of the sealing structure is one of the key factors for ensuring that the motor is not damaged after being used for a long time.

In the related art, a planar sealing gasket is arranged between an end cover and a shell of the motor for sealing, and the planar sealing gasket is compressed by the shell and the end cover to achieve the sealing effect. However, the planar sealing gasket does not have any auxiliary positioning design, and the planar sealing gasket is not positioned in the actual production and assembly process, so when the end cover and the shell of the motor are connected by using fasteners such as screws, the planar sealing gasket can move and is difficult to install. After the flat sealing gasket moves, the flat sealing gasket is deformed, and the sealing effect is seriously reduced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the present invention is to provide a motor, which can prevent the sealing member from moving relative to the end cover and the housing, reduce or avoid the operation of debugging and installing by the operator after the sealing member moves, facilitate the operator to position the sealing member between the end cover and the housing, and ensure the sealing effect of the motor; reduce or avoid the deformation of sealing member body in thickness direction, prevent that the sealing member body warp in thickness direction and lead to the inconsistent and then lead to sealed the inefficacy of thickness of sealing member body, improve the sealed effect of sealing member.

According to the embodiment of the first aspect of the present invention, the motor includes an end cover, a sealing member, a housing and a fastener, the sealing member includes a sealing member body, a through hole is opened on the sealing member body, a first positioning column and a second positioning column are respectively convexly arranged on two opposite sides of the sealing member body in the thickness direction, and the through hole penetrates through the second positioning column; the end cover is provided with a first fastening hole and a first positioning hole, the shell is provided with a second fastening hole, the sealing element is arranged between the end cover and the shell, the fastening element penetrates through the first fastening hole, the second fastening hole and the through hole to be fixedly connected with the end cover and the shell, the first positioning column is matched with the first positioning hole, and the second positioning column is matched with the second fastening hole.

According to the embodiment of the utility model, the sealing element with the first positioning column and the second positioning column is respectively arranged on the two opposite sides in the thickness direction of the sealing element body, the first positioning column is positioned by the first positioning hole of the end cover, the second positioning column is positioned by the second fastening hole of the shell, the sealing element relative end cover and the shell can be fixed, and the relative end cover and the shell of the sealing element are prevented from moving relatively, so that the debugging and installation operations of operators after the movement of the sealing element is reduced or avoided, the operators can position the sealing element between the end cover and the shell conveniently, and the sealing effect of the motor is ensured;

moreover, when the sealing element body is extruded by the end cover and the shell in the thickness direction, the first positioning hole is used for limiting the first positioning column, the second fastening hole is used for limiting the second positioning column, certain limiting effect can be achieved on the deformation of the sealing element body, the deformation of the sealing element body in the thickness direction is reduced or avoided, the phenomenon that the sealing element body deforms in the thickness direction to cause the inconsistent thickness of the sealing element body and further cause sealing failure is avoided, and the sealing effect of the sealing element is improved.

According to the utility model discloses a some embodiments, the sealing member body is the annular, first reference column with the second reference column is a plurality ofly and all follows the circumference interval of sealing member body is arranged.

According to some embodiments of the invention, the first positioning column is located between two adjacent second positioning columns in the circumferential direction of the sealing element body; and/or the second positioning columns are positioned between two adjacent first positioning columns.

According to some embodiments of the present invention, the thickness of the sealing member body is 0.3-5 mm, the height of the first positioning post ranges from 0.3-5 mm, and the outer diameter of the first positioning post ranges from 0.3-5 mm; and/or the height range of the second positioning column is 0.3-5 mm, and the outer diameter range of the second positioning column is 1.5-6 mm.

According to some optional embodiments of the invention, the sealing member is an integrally formed part.

According to some embodiments of the invention, the first positioning post is interference fit with the first positioning hole; and/or the second positioning column is in interference fit with the second fastening hole.

According to some embodiments of the utility model, the orientation of end cover the terminal surface of casing is first terminal surface, the orientation of casing the terminal surface of end cover is the second terminal surface, the sealing member is located first terminal surface with between the second terminal surface, the protrusion is provided with the flange on the second terminal surface, the flange is close to the periphery of casing is followed and is encircleed the periphery side of sealing member, first terminal surface with the sealing member and the flange butt.

According to some embodiments of the present invention, when the sealing member body is in a natural state, a gap is provided between the outer circumferential surface of the sealing member body and the inner circumferential surface of the flange, and the radial width of the gap is in a range of 0.01 to 0.2mm.

According to some embodiments of the present invention, the height range of the rib is 0.3-1 mm, and the radial thickness range of the rib is 0.3-1 mm.

In some embodiments of the present invention, the outer diameter of the first positioning column is smaller than the outer diameter of the second positioning column and the first positioning column is a solid structure.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is an exploded view of an electric machine according to an embodiment of the present invention;

FIG. 2 is a front view of the motor of FIG. 1;

FIG. 3 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is an enlarged view at B in FIG. 3;

FIG. 5 is a perspective view of the seal of FIG. 1;

FIG. 6 is a front view of the seal of FIG. 1;

FIG. 7 is a side view of the seal of FIG. 1;

FIG. 8 is a perspective view of the housing of FIG. 1;

FIG. 9 is a perspective view of the housing of FIG. 1 from another perspective;

FIG. 10 is a schematic view of the housing and fastener of FIG. 1;

fig. 11 is a perspective view of the end cap of fig. 1.

Reference numerals are as follows:

100. a motor;

1. an end cap; 11. a first end face; 12. a first positioning hole; 13. a first fastening hole;

2. a seal member; 21. a first positioning post; 22. a second positioning column; 23. a seal body; 231. a through hole;

3. a housing; 31. a second end face; 32. blocking edges; 33. a second fastening hole; 35. a gap;

4. a fastener.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

The following describes a motor 100 according to an embodiment of the present invention with reference to the drawings.

Referring to fig. 1, 4-6, 8, and 11, according to the motor 100 of the embodiment of the present invention, the motor 100 includes an end cover 1, a sealing member 2, a housing 3, and a fastening member 4, the end cover 1 is connected to the housing 3, the sealing member 2 is disposed between the end cover 1 and the housing 3, and when the motor 100 is installed, the end cover 1 and the housing 3 can be fastened by the fastening member 4 to squeeze the sealing member 2, so as to achieve a sealing effect.

The sealing element 2 comprises a sealing element body 23, a first positioning column 21 and a second positioning column 22 are respectively arranged on two opposite sides of the sealing element body 23 in the thickness direction in a protruding mode, a through hole 231 is formed in the sealing element body 23, and the through hole 231 penetrates through the second positioning column 22. The sealing element 2 may be a flat gasket, for example.

The end cover 1 is provided with a first fastening hole 13 and a first positioning hole 12, the shell 3 is provided with a second fastening hole 33, the sealing element 2 is arranged between the end cover 1 and the shell 3, the fastening element 4 penetrates through the first fastening hole 13, the second fastening hole 33 and the through hole 231 to be fixedly connected with the end cover 1 and the shell 3, the first positioning column 21 is matched with the first positioning hole 12, and the second positioning column 22 is matched with the second fastening hole 33.

When the motor 100 is installed, the first positioning column 21 of the sealing element 2 can be inserted into the first positioning hole 12 on the end cover 1 to position the sealing element 2 relative to the end cover 1, so as to prevent the sealing element 2 from shifting relative to the end cover 1; then, the second fastening holes 33 of the housing 3 are aligned with the second positioning posts 22 of the sealing member 2, the housing 3 is mounted along the axial direction of the second positioning posts 22, and the second positioning posts 22 are inserted into the second fastening holes 33 to position the sealing member 2 relative to the housing 3, thereby preventing the sealing member 2 from moving relative to the housing 3.

When the motor 100 is installed, the second positioning column 22 of the sealing element 2 can be inserted into the second fastening hole 33 on the housing first, so as to position the sealing element 2 relative to the housing 3, and prevent the sealing element 2 from moving relative to the housing 3; then, the first positioning hole 12 of the end cover 1 is aligned with the first positioning column 21 of the sealing member 2, the end cover 1 is installed along the axial direction of the first positioning column 21, and the first positioning column 21 is inserted into the first positioning hole 12 to position the sealing member 2 relative to the end cover 1 and prevent the sealing member 2 from moving relative to the end cover 1.

When the sealing member 2 is positioned relative to the end cover 1 and the housing 3, the end of the fastening member 4 may sequentially pass through the second fastening hole 33, the through hole 231, and the first fastening hole 13 to fasten the end cover 1 and the housing 3, the end cover 1 and the housing 3 press the sealing member body 23 in the thickness direction of the sealing member body 23 to achieve a sealing effect, and the motor 100 is assembled in place.

When the motor 100 is assembled, the first positioning column 21 is positioned through the first positioning hole 12, the second positioning column 22 is positioned through the second fastening hole 33, the sealing element 2 can be fixed relative to the end cover 1 and the shell 3, the end cover 1 and the shell 3 are prevented from moving relative to the sealing element 2, the debugging and installation operations of an operator after the sealing element 2 moves are reduced or avoided, the operator can conveniently position the sealing element 2 between the end cover 1 and the shell 3, the assembly of the motor 100 is facilitated, and the assembly efficiency can be improved; the sealing failure caused by the play of the sealing element 2 is reduced or avoided, and the sealing effect of the sealing element 2 is improved.

Before the fastening piece 4 is installed, the sealing piece 2 is positioned relative to the end cover 1 and the shell 3 through the first positioning column 21 and the second positioning column 22, the second fastening hole 33, the through hole 231 and the first fastening hole 13 are aligned, the end portion of the fastening piece 4 can smoothly penetrate through the second fastening hole 33, the through hole 231 and the first fastening hole 13 in sequence, the operation that an operator debugs and installs due to the fact that the sealing piece 2 moves is reduced or avoided, and the operation that the operator debugs and installs the motor 100 is convenient for the operator to install.

In the process of fastening the end cover 1 and the shell 3 by the fastening piece 4, when the sealing element body 23 is extruded by the end cover 1 and the shell 3 in the thickness direction, the limit of the first positioning column 21 by the first positioning hole 12 and the limit of the second positioning column 22 by the second fastening hole 33 can play a certain limiting role in the deformation of the sealing element body 23 in the thickness direction, so that the sealing element body 23 is prevented from deforming in the thickness direction to cause the thickness inconsistency of the sealing element body 23 and further cause the sealing failure, and the sealing effect of the sealing element 2 is improved.

According to the utility model discloses motor 100, be equipped with first reference column 21 and second reference column 22's sealing member 2 respectively through the relative both sides that set up in the thickness direction of sealing member body 23, utilize first reference column 21 of first locating hole 12 location of end cover 1, utilize second fastening hole 33 location second reference column 22 of casing 3, can be fixed with the relative end cover 1 of sealing member 2 and casing 3, prevent that the relative end cover 1 of sealing member 2 and casing 3 from taking place the drunkenness, make second fastening hole 33, through-hole 231 and first fastening hole 13 align, thereby make the tip of fastener 4 smoothly pass second fastening hole 33 in proper order, through-hole 231 and first fastening hole 13, and then reduce or avoid sealing member 2 to take place the operation that the drunkenness back operating personnel debugged the installation, be convenient for the operating personnel to be located sealing member 2 between end cover 1 and casing 3, guarantee motor 100's sealed effect.

Moreover, when the sealing element body 23 is extruded by the end cover 1 and the shell 3 in the thickness direction, the first positioning hole 12 is used for limiting the first positioning column 21, and the second fastening hole 33 is used for limiting the second positioning column 22, so that the deformation of the sealing element body 23 can be limited to a certain extent, the deformation of the sealing element body 23 in the thickness direction is reduced or avoided, the phenomenon that the sealing element body 23 deforms in the thickness direction to cause the thickness inconsistency of the sealing element body 23 and further cause sealing failure is prevented, and the sealing effect of the sealing element 2 is improved.

Referring to fig. 1, 4-7, according to some embodiments of the present invention, the sealing member body 23 is annular, the first positioning column 21 and the second positioning column 22 are both plural, and the plural first positioning columns 21 and the plural second positioning columns 22 are all arranged along the circumferential interval of the sealing member body 23. The sealing element body 23 is annular, so that the sealing element 2 can play a sealing role in the circumferential direction, and the sealing effect of the sealing element 2 is ensured. By providing a plurality of first positioning posts 21 and second positioning posts 22, the seal member 2 can be positioned more reliably.

The plurality of first positioning columns 21 and the plurality of second positioning columns 22 are arranged at intervals along the circumferential direction of the sealing element body 23, when the sealing element body 23 is extruded by the end cover 1 and the shell 3 in the thickness direction, the first positioning columns 21 and the second positioning columns 22 can play a certain limiting role in deformation of the sealing element body 23 in the thickness direction, deformation of the sealing element body 23 in the thickness direction is further reduced or avoided, thickness inconsistency of the sealing element body 23 caused by deformation of the sealing element body 23 in the thickness direction and sealing failure caused by the deformation of the sealing element body 23 are prevented, and the sealing effect of the sealing element 2 is improved.

It should be construed that, in the description of the present invention, "a plurality" means two or more.

Referring to fig. 1, 5 and 6, according to some embodiments of the present invention, in the circumferential direction of the sealing member body 23, the first positioning columns 21 are located between two adjacent second positioning columns 22, and the second positioning columns 22 are located between two adjacent first positioning columns 21. Therefore, the first positioning column 21 and the second positioning column 22 are staggered, when the sealing element body 23 is extruded by the end cover 1 and the shell 3 in the thickness direction, the limiting effect of the first positioning column 21 and the second positioning column 22 on the deformation of the sealing element body 23 in the thickness direction of the sealing element body 23 can be further improved, so that the deformation of the sealing element body 23 in the thickness direction is further reduced or avoided, the sealing element body 23 is prevented from deforming in the thickness direction to cause the thickness inconsistency of the sealing element body 23 and further cause sealing failure, and the sealing effect of the sealing element 2 is improved.

Referring to fig. 7, according to some embodiments of the present invention, the thickness D1 of the sealing member body 23 is 0.3-5 mm, and the larger the thickness D1 of the sealing member body 23 is, the larger the safe deformation amount (the maximum deformation amount by which the sealing member body 23 can be restored to the normal state) that the sealing member body 23 can generate in the thickness direction is, and the larger the space occupied by the sealing member body 23 is. The thickness D1 of the seal body 23 is too small, and when the end cap 1 and the housing 2 are fastened together by the fastening member 4, the amount of deformation of the seal body 23 exceeds the safe amount of deformation, which may cause a failure in sealing the seal 2. The thickness D1 of the sealing element body 23 is set to be 0.3-5 mm, so that the sealing element 2 can be prevented, the sealing effect of the sealing element 2 is ensured, and the structure of the motor 100 is compact.

The height H1 of the first positioning column 21 is in the range of 0.3-5 mm, the smaller the height H1 of the first positioning column 21 is, the worse the positioning effect of the first positioning column 21 is, the too small height H1 of the first positioning column 21 even causes the first positioning column 21 to lose the positioning effect, and the too small height H1 of the first positioning column 21 is not easy to manufacture. The larger the height H1 of the first positioning column 21 is, the larger the occupied space of the first positioning column 21 is, and the larger the height H1 of the first positioning column 21 is, the material waste may be caused to some extent. The height H1 range of the first positioning column 21 is set to be 0.3-5 mm, so that the positioning effect of the first positioning column 21 is guaranteed, the manufacturing is convenient, the waste of materials can be reduced to a certain extent, the production cost is reduced, and the structure of the motor 100 is more compact.

The outer diameter R1 range of the first positioning column 21 is 0.3-5 mm, the smaller the outer diameter R1 of the first positioning column 21 is, the worse the positioning effect of the first positioning column 21 is, the too small outer diameter R1 of the first positioning column 21 even can cause the first positioning column 21 to lose the positioning effect, and the too small outer diameter R1 of the first positioning column 21 is difficult to manufacture and easy to break. The larger the outer diameter R1 of the first positioning column 21, the larger the occupied space of the first positioning column 21, the larger the first positioning hole 12, the larger the structural strength influence on the end cover 1, the larger the outer diameter R1 of the first positioning column 21, the larger the occupied space of the first positioning column 21, and the larger the outer diameter R1 of the first positioning column 21, which may cause material waste to some extent. The outer diameter R1 range of the first positioning column 21 is set to be 0.3-5 mm, the structural strength of the first positioning column 21 can be guaranteed, the positioning effect of the first positioning column 21 is guaranteed, the manufacturing is convenient, the waste of materials can be reduced to a certain extent, the production cost is reduced, and the structure of the motor 100 is more compact.

Referring to fig. 7, according to some embodiments of the present invention, the height H2 range of the second positioning column 22 is 0.3-5 mm, the smaller the height H2 of the second positioning column 22 is, the worse the positioning effect of the second positioning column 22 is, the too small height H2 of the second positioning column 22 may even cause the second positioning column 22 to lose the positioning effect, and the too small height H2 of the second positioning column 22 is not easy to be made. The larger the height H2 of the second positioning posts 22 is, the larger the occupied space of the second positioning posts 22 is, and the larger the height H2 of the second positioning posts 22 is, the material waste may be caused to a certain extent. The height H2 range of the second positioning column 22 is set to be 0.3-5 mm, so that the positioning effect of the second positioning column 22 is guaranteed, the manufacturing is convenient, the waste of materials can be reduced to a certain extent, the production cost is reduced, and the structure of the motor 100 is more compact.

The range of the outer diameter R2 of the second positioning column 22 is 1.5-6 mm, the smaller the outer diameter R2 of the second positioning column 22 is, the poorer the positioning effect of the second positioning column 22 is, the smaller the outer diameter R2 of the second positioning column 22 is, even the second positioning column 22 loses the positioning effect, and the smaller the outer diameter R2 of the second positioning column 22 is, the less easy to manufacture and easy to break. The larger the outer diameter R2 of the second positioning column 22, the larger the occupied space of the second positioning column 22, the larger the second fastening hole 33, the larger the structural strength influence on the housing 3, the larger the outer diameter R2 of the second positioning column 22, the larger the occupied space of the second positioning column 22, and the larger the outer diameter R2 of the second positioning column 22, which may cause material waste to some extent.

Set up the external diameter R2 scope of second reference column 22 to 0.3 ~ 5mm, can guarantee second reference column 22's structural strength, guarantee second reference column 22's location effect, the preparation of being convenient for can also reduce the waste of material to a certain extent, reduction in production cost for motor 100's structure is more compact.

For example, when the through hole 231 needs to be formed in the second positioning column 22, the outer diameter R2 of the second positioning column 22 is too small, the through hole 231 suitable for the fastening piece 4 to penetrate through is not easily formed in the second positioning column 22, and the outer diameter R2 of the second positioning column 22 is set to be 1.5-6 mm, so that the second positioning column 22 has enough space for forming the through hole 231, waste of materials is reduced to a certain extent, production cost is reduced, and the structure of the motor 100 is more compact.

Referring to fig. 11, according to some embodiments of the present invention, the end surface of the end cover 1 facing the housing 3 is a first end surface 11, the first positioning hole 12 is formed at the first end surface 11, and the first positioning hole 12 is a blind hole. Therefore, water, dust, oil and the like can be prevented from entering the motor 100 through the first positioning hole 12, and the sealing effect of the motor 100 is improved.

Referring to fig. 1, 5-7, according to some optional embodiments of the present invention, the sealing member 2 is an integral part, which can improve the structural strength of the sealing member 2, so that the connection between the first positioning column 21 and the second positioning column 22 and the sealing member body 23 is more reliable, and the sealing member 2 can be positioned more accurately and reliably with respect to the end cover 1 and the housing 3 by positioning the first positioning column 21 and the second positioning column 22.

According to the utility model discloses a some embodiments, first reference column 21 and first locating hole 12 interference fit, when installation motor 100, insert first reference column 21 of sealing member 2 in first locating hole 12 on the end cover 1, can fix a position sealing member 2 relative end cover 1 through first reference column 21 and first locating hole 12 interference fit, can be so that sealing member 2 is positioned on end cover 1 more reliably, further prevent 1 drunkenness of 2 relative end covers of sealing member, thereby reduce or avoid the operation that operating personnel debugged the installation after sealing member 2 takes place the drunkenness, the operating personnel of being convenient for is positioned sealing member 2 between end cover 1 and casing 3.

When sealing member body 23 received the extrusion of casing 3 with end cover 1 on thickness direction, first registration post 21 and first registration hole 12 interference fit can improve the limiting action that first registration hole 12 played the deformation of sealing member body 23 to the spacing of first registration post 21, prevent that sealing member body 23 from warping on thickness direction and leading to the inconsistent and then the sealed inefficacy that arouses of thickness of sealing member body 23, improve the sealed effect of sealing member 2.

According to some embodiments of the utility model, second reference column 22 and second fastening hole 33 interference fit, when installation motor 100, insert the second reference column 22 of sealing member 2 in the second fastening hole 33 on casing 3, can fix a position sealing member 2 relatively through second reference column 22 and second fastening hole 33 interference fit, can make sealing member 2 be located casing 3 more reliably, further prevent the relative casing 3 drunkenness of sealing member 2, thereby reduce or avoid the operation that operating personnel debugged the installation after sealing member 2 takes place the drunkenness, the operating personnel of being convenient for is located sealing member 2 between end cover 1 and casing 3.

When the sealing element body 23 is extruded by the shell 3 and the end cover 1 in the thickness direction, the second positioning column 22 is in interference fit with the second fastening hole 33, the limiting effect of the first positioning hole 12 on the limiting effect of the first positioning column 21 on the deformation of the sealing element body 23 can be improved, the sealing element body 23 is prevented from deforming in the thickness direction to cause the inconsistent thickness of the sealing element body 23 and further cause sealing failure, and the sealing effect of the sealing element 2 is improved.

Referring to fig. 1-3, 8-11, according to some embodiments of the present invention, the end surface of the end cap 1 facing the housing 3 is a first end surface 11, the end surface of the housing 3 facing the end cap 1 is a second end surface 31, the sealing member 2 is located between the first end surface 11 and the second end surface 31, the second end surface 31 is formed with a rib 32, the rib 32 is adjacent to the outer circumferential edge of the housing 3, and the rib 32 surrounds the outer circumferential side of the sealing member 2, and the first end surface 11 abuts against the sealing member 2 and the rib 32.

When the motor 100 is installed, the first positioning column 21 of the sealing element 2 can be inserted into the first positioning hole 12 on the end cover 1 to position the sealing element 2 relative to the end cover 1, so as to prevent the sealing element 2 from moving relative to the end cover 1; then, the second fastening holes 33 of the housing 3 are aligned with the second positioning posts 22 of the sealing member 2, the housing 3 is mounted along the axial direction of the second positioning posts 22, and the second positioning posts 22 are inserted into the second fastening holes 33 to position the sealing member 2 relative to the housing 3, thereby preventing the sealing member 2 from moving relative to the housing 3. At this time, the end cover 1 and the housing 3 are fastened, the end cover 1 and the housing 3 press the sealing member body 23 to achieve a sealing effect, and the motor 100 is assembled in place.

When the sealing element body 23 is extruded in the thickness direction, and the outer peripheral surface of the sealing element body 23 expands outward in the radial direction to the rib 32, the rib 32 can play a certain limiting role in the radial deformation of the sealing element body 23, so that the outer peripheral surface of the sealing element body 23 is prevented from expanding outward in the radial direction to exceed the outer contour of the housing 3 to cause sealing failure, the sealing effect of the sealing element 2 is improved, and the motor 100 is more regular and beautiful.

Referring to fig. 4, according to some embodiments of the present invention, when the sealing member body 23 is in a natural state (i.e., a state when the sealing member body 23 is not pressed), a gap 35 is formed between the outer circumferential surface of the sealing member body 23 and the inner circumferential surface of the rib 32, and the radial width L of the gap 35 ranges from 0.01 mm to 0.2mm. Because the clearance 35 is arranged between the outer peripheral surface of the sealing element body 23 and the inner peripheral surface of the rib 32, the sealing element body 23 is in clearance 35 fit with the rib 32, so that the sealing element body 23 is conveniently installed in the rib 32 by an operator, and the motor 100 is conveniently assembled by the operator.

The radial width L of the gap 35 is small, so that the requirement on the machining precision of the shell 3 and the sealing element 2 is high, and the production cost is high; the larger the radial width L of the gap 35, the more space the gap 35 occupies. The radial width L of the gap 35 is set to be 0.01-0.2 mm, the requirement on the processing precision of the shell 3 and the sealing element 2 is not high, the shell 3 and the sealing element 2 are conveniently processed and produced, and the production cost is reduced; moreover, the space occupied by the gap 35 can be saved, so that the structure of the motor 100 is more compact.

Referring to fig. 4, according to some embodiments of the present invention, the height H3 of the rib 32 ranges from 0.3 mm to 1mm, and the lower the height H3 of the rib 32 is, the weaker the limiting effect of the rib 32 on the radial outward expansion of the outer circumferential surface of the sealing member body 23 is, under the condition that the thickness of the sealing member body 23 is the same; the higher the height H3 of the rib 32 is, the thicker the requirement on the thickness of the seal body 23 is, and the higher the height H3 of the rib 32 is, the larger the occupied space of the seal body 23 is; the height H3 range of the rib 32 is set to 0.3-1 mm, so that the limiting function of the rib 32 on the outward expansion of the peripheral surface of the sealing element body 23 in the radial direction can meet the sealing requirement, the occupied space of the sealing element body 23 can be reduced to a certain extent, and the structure of the motor 100 is more compact.

The radial thickness D2 of the rib 32 ranges from 0.3 mm to 1mm, and the smaller the radial thickness D2 of the rib 32 is, the lower the structural strength of the rib 32 is, and the rib 32 is easy to damage; the greater the radial thickness D2 of the rib 32, the greater the footprint of the rib 32; the range of the radial thickness D2 of the rib 32 is set to 0.3 to 1mm, so that the structural strength of the rib 32 can be ensured, and the occupied space of the rib 32 can be reduced, so that the structure of the motor 100 is more compact.

Referring to fig. 5 and 7, in some embodiments of the present invention, the outer diameter of the first positioning column 21 is smaller than the outer diameter of the second positioning column 22, and the first positioning column 21 is a solid structure. Therefore, the operators can conveniently identify the two sides of the sealing element 2 in the thickness direction, the phenomenon that the operators mount the sealing element 2 wrongly is reduced or avoided, the operators can mount and position the sealing element 2 conveniently, and the assembly efficiency can be improved.

Set up first locating column 21 as solid construction, can improve the structural strength of first locating column 21, prevent that first locating column 21 from producing great bending for first locating column 21 inserts reliably in first locating hole 12, thereby fixes a position sealing member 2 reliably on end cover 1, and the operating personnel of being convenient for installs motor 100.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. An electric machine having a seal, the electric machine comprising an end cap, a seal, a housing, and a fastener;

the sealing element comprises a sealing element body, a through hole is formed in the sealing element body, a first positioning column and a second positioning column are respectively arranged on two opposite sides of the sealing element body in a protruding mode in the thickness direction, and the through hole penetrates through the second positioning column;

the end cover is provided with a first fastening hole and a first positioning hole, the shell is provided with a second fastening hole, the sealing element is arranged between the end cover and the shell, the fastening element penetrates through the first fastening hole, the second fastening hole and the through hole to be fixedly connected with the end cover and the shell, the first positioning column is matched with the first positioning hole, and the second positioning column is matched with the second fastening hole.

2. The electric machine according to claim 1, wherein the sealing member body is annular, and the first positioning columns and the second positioning columns are multiple and are arranged at intervals along the circumferential direction of the sealing member body.

3. The electric machine of claim 2, wherein the first positioning posts are located between two adjacent second positioning posts and the second positioning posts are located between two adjacent first positioning posts in a circumferential direction of the seal body.

4. The electric machine of claim 1, wherein the seal body has a thickness of 0.3 to 5mm, the first positioning post has a height in the range of 0.3 to 5mm, and the first positioning post has an outer diameter in the range of 0.3 to 5mm; and/or the height range of the second positioning column is 0.3-5 mm, and the outer diameter range of the second positioning column is 1.5-6 mm.

5. The machine of any one of claims 1 to 4 wherein the seal is an integral moulding.

6. The electric machine of claim 1, wherein the first locator post is an interference fit with the first locator hole; and/or the second positioning column is in interference fit with the second fastening hole.

7. The electric machine of claim 1, wherein the end surface of the end cap facing the housing is a first end surface, the end surface of the housing facing the end cap is a second end surface, the seal is located between the first end surface and the second end surface, a rib is convexly disposed on the second end surface, the rib is adjacent to the outer peripheral edge of the housing and surrounds the outer peripheral side of the seal, and the first end surface abuts the seal and the rib.

8. The electric machine of claim 7, wherein when the seal body is in a natural state, a gap is provided between an outer circumferential surface of the seal body and an inner circumferential surface of the rib, and a radial width of the gap is in a range of 0.01 to 0.2mm.

9. The machine of claim 7, wherein the ribs have a height in the range of 0.3 to 1mm and a radial thickness in the range of 0.3 to 1mm.

10. The electric machine of claim 1 wherein the outer diameter of the first positioning post is smaller than the outer diameter of the second positioning post and the first positioning post is a solid structure.

Images