Motor sealing structure and motor

Abstract

The utility model discloses a motor sealing structure, which comprises an end cover provided with a first mounting hole for a motor rotating shaft to pass through; the protruding part is arranged on the front side surface of the end cover and annularly arranged in the circumferential direction of the first mounting hole, and the protruding part extends in the direction away from the front side surface of the end cover; the sealing element is provided with a sleeving part which is annularly arranged, and the sleeving part is at least arranged on the side, away from the motor rotating shaft, of the protruding part in a sleeving mode; and the annular elastic ring sleeves one side, far away from the motor rotating shaft, of the sleeving part, so that the sleeving part is in interference fit with the convex part. Therefore, the sealing element can be conveniently positioned and limited, and meanwhile the sealing performance of the sealing element can be further enhanced. In addition, the utility model also discloses a motor with the motor sealing structure.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a motor sealing structure and a motor. Background Art

[0002] During use, motors are typically used in conjunction with a reduction gearbox or other transmission device. During installation, the motor's shaft must be connected to the reduction gearbox or other transmission device. However, to facilitate normal operation of the motor, the motor shaft is typically inserted through the motor's end cap, with a gap left between the two to prevent collision and interference between the motor shaft and the end cap during rotation. However, this structure can easily allow external dust or liquid to enter the motor through the gap, which can affect the motor's performance and service life.

[0003] If a sealing ring is simply installed between the end cover and the reduction gear box or other transmission device, it is easy for the sealing ring to shift or misalign during installation or use. If the sealing ring shifts to contact the rotating shaft, it will not only affect the rotation of the rotating shaft, but also cause wear to the sealing ring. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a motor sealing structure that can facilitate positioning and limiting of a seal and is conducive to improving the sealing performance of the motor.

[0005] The utility model also provides a motor with the above motor sealing structure.

[0006] According to an embodiment of the present invention, the motor sealing structure includes: an end cover, which is provided with a first mounting hole for the power supply motor shaft to pass through; a raised portion, which is provided on the front side surface of the end cover and is arranged in a ring shape along the circumference of the first mounting hole, and the raised portion extends in a direction away from the front side surface of the end cover; a sealing member, which has a sleeve portion arranged in an annular shape, and the sleeve portion is at least sleeved on a side of the sleeve portion away from the motor shaft; an annular elastic ring, which is sleeved on a side of the sleeve portion away from the motor shaft, so that the sleeve portion and the raised portion have an interference fit.

[0007] The motor sealing structure according to the embodiment of the present utility model has at least the following beneficial effects:

[0008] By adopting the motor sealing structure of the embodiment of the present utility model, during installation, only the sleeved portion of the seal is sleeved on the outer periphery of the convex portion, and then the annular elastic ring is sleeved on the outer periphery of the sleeved portion. The installation is very convenient, and the convex portion and the annular elastic ring can also cooperate to clamp the sleeved portion of the seal. Thus, not only can the positioning and limiting of the seal be facilitated, but also the seal can be in interference fit with the convex portion, further enhancing the sealing performance of the seal.

[0009] According to some embodiments of the present utility model, the seal is provided with a relief hole corresponding to the first mounting hole. The sleeved portion is wound around the outer periphery of the relief hole, and a annular groove adapted to the convex portion is provided on the rear side surface of the sleeved portion; the convex portion is embedded in the annular groove, and the annular elastic ring is sleeved on the outer periphery of the sleeved portion, and the inner wall of one side of the annular groove away from the relief hole is in interference fit with the inner wall of one side of the convex portion away from the first mounting hole.

[0010] According to some embodiments of the present utility model, the convex portion has an anti - detachment portion, and the width of the anti - detachment portion gradually increases along the direction away from the front side surface of the end cover.

[0011] According to some embodiments of the present utility model, in the radial direction of the first mounting hole, there is a gap between the convex portion and the periphery of the first mounting hole, and the rear side surface of the sleeved portion abuts against the front side surface of the end cover.

[0012] According to some embodiments of the present utility model, the seal is provided with a first limiting groove provided around the outer periphery of the sleeved portion. The first limiting groove is recessed towards the convex portion relative to the outer peripheral wall of the sleeved portion, and the annular elastic ring can be embedded in the first limiting groove.

[0013] According to some embodiments of the present utility model, an installation groove is provided on the front side surface of the seal. The first limiting groove is formed by the inner wall of one side of the installation groove being recessed towards the convex portion relative to the outer peripheral wall of the sleeved portion; an annular installation opening is provided at the opening of the installation groove, and in the radial direction of the first mounting hole, the width of the annular installation opening is smaller than the width of the annular elastic ring.

[0014] According to some embodiments of the present utility model, the annular elastic ring is a metal spring ring.

[0015] According to some embodiments of the present utility model, a second limiting groove is provided on the front side surface of the end cover and is wound around the outer periphery of the convex portion. The seal is located inside the second limiting groove, and the front side surface of the seal protrudes from the outer peripheral edge of the second limiting groove.

[0016] According to some embodiments of the present invention, the end cover is provided with at least two second mounting holes, and the second mounting holes are used for fasteners to pass through, so as to connect the end cover to an external device.

[0017] The motor according to the embodiment of the present invention is provided with the motor sealing structure of any one of the above embodiments.

[0018] The motor according to the embodiment of the present utility model has at least the following beneficial effects:

[0019] In the motor of the embodiment of the utility model, by adopting the motor sealing structure of any of the above-mentioned embodiments, by setting the sleeve part and the annular elastic ring, not only can the positioning and limiting of the seal be facilitated, but also the sleeve part and the raised part of the end cover can be interference fit, thereby further enhancing the sealing performance of the seal. Therefore, when the motor needs to be matched with the reduction box or other transmission device, it is only necessary to press the reduction box or other transmission device against the seal, and the seal can be axially compressed with the end cover, thereby sealing the gap between the end cover and the motor shaft, reducing the risk of external dust or liquid entering the interior of the motor through the gap, and thus helping to improve the performance of the motor and extend the service life of the motor.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 A schematic diagram of a motor sealing structure according to an embodiment of the present invention;

[0023] Figure 2 This is a cross-sectional schematic diagram of a motor sealing structure according to an embodiment of the present utility model;

[0024] Figure 3 This is a cross-sectional schematic diagram of a motor sealing structure according to an embodiment of the present utility model;

[0025] Figure 4 for Figure 3 A partial enlarged view of point A in the middle;

[0026] Figure 5 This is a schematic diagram of the front side of the end cover of an embodiment of the utility model;

[0027] Figure 6 A schematic cross-sectional view of an end cap according to an embodiment of the present invention;

[0028] Figure 7 Front side schematic view of the seal of the embodiment of the present utility model;

[0029] Figure 8 Rear side schematic view of the seal of the embodiment of the present utility model;

[0030] Figure 9 Cross-sectional schematic view of the seal of the embodiment of the present utility model.

[0031] Reference numerals:

[0032] End cover 100, first mounting hole 110, convex portion 120, anti-disengagement portion 130, second limiting groove 140, housing mounting hole 150, external mounting hole 160;

[0033] Seal 200, relief hole 210, socket portion 220, annular groove 230, first limiting groove 240, mounting groove 250, annular mounting opening 251;

[0034] Annular elastic ring 300;

[0035] Motor rotating shaft 400. Detailed implementation manners

[0036] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0037] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0038] In the description of the present utility model, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0039] In the description of the present utility model, unless otherwise clearly defined, terms such as "arrangement", "installation", and "connection" should be understood in a broad sense, and those skilled in the relevant technical field can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0040] Referring to Figures 1 to 9 , an embodiment of the present utility model provides a motor sealing structure, which includes an end cover 100, a convex portion 120, a sealing member 200, and an annular elastic ring 300. The end cover 100 is provided with a first mounting hole 110 for the motor rotating shaft 400 to pass through. The convex portion 120 is arranged on the front surface of the end cover 100 and is circumferentially annularly arranged along the first mounting hole 110, and the convex portion 120 extends in a direction away from the front surface of the end cover 100. The sealing member 200 has a socket portion 220 arranged in an annular shape, and the socket portion 220 is at least sleeved on one side of the convex portion 120 away from the motor rotating shaft 400. The annular elastic ring 300 is sleeved on one side of the socket portion 220 away from the motor rotating shaft 400, so that the socket portion 220 and the convex portion 120 are in interference fit.

[0041] By adopting the motor sealing structure of the embodiment of the present utility model, during installation, only the socket portion 220 of the sealing member 200 needs to be sleeved on the outside of the convex portion 120, and then the annular elastic ring 300 is sleeved on the outside of the socket portion 220, and the installation is very convenient. In addition, when the annular elastic ring 300 is sleeved on the outside of the socket portion 220, the annular elastic ring 300 can press the socket portion 220 under the action of its own elastic contraction force. Therefore, not only can the positioning and limiting of the sealing member 200 be facilitated, but also the sealing member 200 and the convex portion 120 can be in interference fit, further enhancing the sealing performance of the sealing member 200. Thus, when it is necessary to cooperate the motor with a reduction gearbox or other transmission devices, only the reduction gearbox or other transmission devices need to be pressed against the sealing member 200, and then the sealing member 200 can be axially pressed in cooperation with the end cover 100, so as to seal the gap between the end cover 100 and the motor rotating shaft 400, reduce the risk of external dust or liquid entering the motor interior from the gap, and further contribute to improving the service performance of the motor and extending the service life of the motor.

[0042] In addition, in the motor sealing structure of the embodiment of the present utility model, the annular elastic ring 300 is sleeved on the socket part 220 of the seal 200 so that the socket part 220 and the convex part 120 are in interference fit. This structure not only helps to improve the sealing performance between the seal 200 and the end cover 100, but also facilitates the disassembly and installation of the seal 200. Moreover, when there is a problem with the sealing performance between the seal 200 and the end cover 100, it is only necessary to replace the seal 200 with better sealing performance or only replace the annular elastic ring 300 with greater elasticity, that is, there is no need to replace the seal 200 and the annular elastic ring 300 at the same time, thus facilitating the maintenance of the sealing structure and helping to reduce the maintenance cost of the sealing structure.

[0043] It can be understood that the above-mentioned seal 200 is specifically a flexible part that can deform and achieve a sealing effect, such as a rubber part, a silicone part, etc., and the present utility model does not make specific limitations thereto.

[0044] It can be understood that the end cover 100 is provided with a first mounting hole 110 for the motor shaft 400 to pass through. In order to prevent the motor shaft 400 from colliding with or interfering with the inner peripheral wall of the first mounting hole 110 during rotation, the diameter of the first mounting hole 110 should be greater than the diameter of the motor shaft 400.

[0045] Refer to Figures 1 to 9 , in some embodiments, the seal 200 is provided with a relief hole 210 corresponding to the first mounting hole 110. The socket part 220 is wound around the outer periphery of the relief hole 210, and an annular groove 230 adapted to the convex part 120 is provided on the rear side surface of the socket part 220. It can be understood that the rear side surface of the socket part 220 specifically refers to the surface of the socket part 220 facing the front side surface of the end cover 100. The convex part 120 is embedded in the annular groove 230, and the annular elastic ring 300 is sleeved on the outer periphery of the socket part 220, so that the inner wall of the side of the annular groove 230 away from the relief hole 210 and the inner wall of the side of the convex part 120 away from the first mounting hole 110 are in interference fit.

[0046] By adopting the above structure, an annular groove 230 is opened on the rear surface of the sleeve part 220, and the raised part 120 is embedded in the annular groove 230 of the sleeve part 220, thereby making the installation of the seal 200 more firm and stable, which is beneficial to reducing the risk of the seal 200 accidentally falling off from the end cover 100, thereby better positioning and limiting the seal 200, and the annular elastic ring 300 can further strengthen the sealing between the sleeve part 220 and the raised part 120, thereby reducing the risk of external dust or liquid entering the interior of the motor through the gap, thereby improving the performance of the motor and extending the service life of the motor. In addition, even if external dust or liquid can enter between the seal 200 and the end cover 100, since the above structure embeds the protrusion 120 in the annular groove 230 of the sleeve 220, that is, the protrusion 120 is wrapped by the sleeve 220, it is equivalent to extending the flow path of external dust or liquid from the position between the outer end of the seal 200 and the front surface of the end cover 100 to the first mounting hole 110 of the end cover 100, thereby further reducing the risk of external dust or liquid entering the interior of the motor through the gap.

[0047] It can be understood that the seal 200 is provided with a clearance hole 210 corresponding to the first mounting hole 110, wherein the clearance hole 210 is used to pass the motor shaft 400. In order to avoid the motor shaft 400 from colliding or interfering with the inner wall of the clearance hole 210 during rotation, the diameter of the clearance hole 210 should be larger than the diameter of the motor shaft 400.

[0048] It is understandable that the rear surface of the sleeve portion 220 is provided with an annular groove 230 adapted to the raised portion 120 , and the raised portion 120 is embedded in the annular groove 230 , which is merely an exemplary description of the present invention. In order to form an interference fit between the sleeve portion 220 of the seal 200 and the raised portion 120 of the end cover 100 through the annular elastic ring 300, in addition to providing an annular groove 230 on the rear surface of the sleeve portion 220 to sleeve the sleeve portion 220 on the outer peripheral wall of the raised portion 120, in some embodiments, the sleeve portion 220 can also be directly sleeved on the side of the raised portion 120 away from the motor shaft 400, that is, the raised portion 120 and the sleeve portion 220 are arranged in sequence from the inside to the outside along the radial direction of the motor shaft 400. Therefore, when the annular elastic ring 300 is sleeved on the side of the sleeve portion 220 away from the motor shaft 400, an interference fit can also be achieved between the sleeve portion 220 and the raised portion 120. The present invention does not impose any specific limitation on the specific matching manner between the sleeve portion 220 and the raised portion 120 . It is only necessary that the sleeve portion 220 is at least sleeved on the side of the raised portion 120 away from the motor shaft 400 .

[0049] It can be understood that an annular groove 230 adapted to the protruding portion 120 is provided on the rear side surface of the socket portion 220. Specifically, it means that the cross-sectional shape and size of the annular groove 230 are adapted to the protruding portion 120. That is, when the protruding portion 120 is embedded in the annular groove 230, the inner peripheral wall of the annular groove 230 can be mutually attached to the outer peripheral wall of the protruding portion 120.

[0050] Referring to Figures 1 to 9 , in some embodiments, the protruding portion 120 has an anti-disengagement portion 130, and the width of the anti-disengagement portion 130 gradually increases in a direction away from the front side surface of the end cap 100.

[0051] By adopting the above structure, the anti-disengagement portion 130 is provided on the protruding portion 120. Since the width of the anti-disengagement portion 130 gradually increases in a direction away from the front side surface of the end cap 100, when the protruding portion 120 is embedded in the annular groove 230 of the socket portion 220, the anti-disengagement portion 130 can prevent the socket portion 220 from disengaging from the protruding portion 120 in a direction away from the front side surface of the end cap 100. Thereby, the connection stability between the socket portion 220 and the protruding portion 120 can be further improved, which is beneficial to reducing the risk of the sealing member 200 accidentally falling off from the end cap 100, and thus the sealing member 200 can be better positioned and limited.

[0052] It can be understood that referring to Figures 1 to 9 , the anti-disengagement portion 130 can be specifically provided at one end of the protruding portion 120 away from the front side surface of the end cap 100, that is, the anti-disengagement portion 130 can be specifically provided at the front end of the protruding portion 120. Of course, in addition to this, the anti-disengagement portion 130 can also be provided in the middle or at the rear end of the protruding portion 120. The present utility model does not make specific limitations on this, as long as the width of the anti-disengagement portion 130 gradually increases in a direction away from the front side surface of the end cap 100.

[0053] It can be understood that referring to Figures 1 to 9 , the width of the anti-disengagement portion 130 gradually increases in a direction away from the front side surface of the end cap 100. Specifically, the outer surface of the anti-disengagement portion 130 is an arc-shaped concave surface that gradually extends outward in a direction away from the front side surface of the end cap 100, and the opening of the arc-shaped concave surface is arranged outward. Of course, in order to make the width of the anti-disengagement portion 130 gradually increase in a direction away from the front side surface of the end cap 100, in addition to the above structure, in some embodiments, the outer surface of the anti-disengagement portion 130 can also be set as an arc-shaped convex surface that gradually extends outward in a direction away from the front side surface of the end cap 100, and the arc-shaped convex surface protrudes outward; or, the outer surface of the anti-disengagement portion 130 can also be set as an inclined surface that gradually extends outward in a direction away from the front side surface of the end cap 100. The present utility model does not make specific limitations on this.

[0054] Referring to Figures 1 to 9, in some embodiments, in the radial direction of the first mounting hole 110, there is a gap between the convex portion 120 and the periphery of the first mounting hole 110, and the rear side surface of the socket portion 220 abuts against the front side surface of the end cover 100.

[0055] By adopting the above structure, a gap is left between the convex portion 120 and the periphery of the first mounting hole 110, so that an installation space can be reserved for one side wall of the socket portion 220 close to the motor shaft 400, enabling the rear end of one side wall of the socket portion 220 close to the motor shaft 400 to abut against the front side surface of the end cover 100, thereby avoiding the interference of friction caused by one side wall of the socket portion 220 close to the motor shaft 400 extending into the first mounting hole 110. In addition, by adopting the above structure, the rear side surface of the socket portion 220 can be completely abutted against the front side surface of the end cover 100, thereby further improving the installation stability of the seal 200. And when the motor cooperates with the reduction gearbox or other transmission devices, the reduction gearbox or other transmission devices can abut against the seal 200 and press the seal 200, so that the rear side surface of the seal 200 can be closely attached to the front side surface of the end cover 100, which is beneficial to further improving the sealing performance of the motor sealing structure.

[0056] Refer to Figures 1 to 9 , in some embodiments, the seal 200 is provided with a first limiting groove 240 that is annularly arranged on the outer periphery of the socket portion 220. The first limiting groove 240 is recessed in the direction of the convex portion 120 relative to the outer peripheral wall of the socket portion 220, and the annular elastic ring 300 can be embedded in the first limiting groove 240.

[0057] By adopting the above structure, the front inner wall of the first limiting groove 240 can prevent the annular elastic ring 300 from moving forward relative to the socket portion 220, that is, the front inner wall of the first limiting groove 240 can prevent the annular elastic ring 300 from moving away from the end cover 100 relative to the socket portion 220, thereby limiting the annular elastic ring 300 and avoiding the accidental detachment of the annular elastic ring 300 from the socket portion 220, which is beneficial to improving the installation stability of the annular elastic ring 300, and further beneficial to ensuring the interference fit between the socket portion 220 and the convex portion 120, and thus improving the sealing performance between the socket portion 220 and the convex portion 120.

[0058] Refer to Figures 1 to 9In some embodiments, a mounting groove 250 is defined on the front surface of the sealing member 200. It is understood that the front surface of the sealing member 200 specifically refers to the surface of the sealing member 200 facing away from the front surface of the end cap 100. For example, the first limiting groove 240 can be formed by an inner wall of one side of the mounting groove 250 being recessed relative to the outer peripheral wall of the sleeve portion 220 toward the protruding portion 120. The opening of the mounting groove 250 defines an annular mounting opening 251. In the radial direction of the first mounting hole 110, the width of the annular mounting opening 251 is smaller than the width of the annular elastic ring 300.

[0059] By adopting the above structure, an installation groove 250 is added to the front surface of the seal 200, and the first limiting groove 240 is arranged inside the installation groove 250. Therefore, when installing, the annular elastic ring 300 needs to be embedded in the installation groove 250 from the opening of the installation groove 250, and then embedded in the first limiting groove 240 under the action of its own elastic force. By providing an annular mounting opening 251 at the opening of the mounting groove 250, and the width of the annular mounting opening 251 is smaller than the width of the annular elastic ring 300, during the installation process, the annular elastic ring 300 needs to be pushed inward, so that the edge of the annular mounting opening 251 is deformed and the width of the annular mounting opening 251 is increased, thereby the annular elastic ring 300 can be pushed into the mounting groove 250. After the annular elastic ring 300 is installed in the mounting groove 250, the edge of the annular mounting opening 251 is elastically reset. At this time, the width of the annular mounting opening 251 is again smaller than the width of the annular elastic ring 300, thereby further preventing the annular elastic ring 300 from accidentally falling off from the sleeve portion 220 and escaping from the annular mounting opening 251, which is conducive to further limiting the annular elastic ring 300.

[0060] It is understandable that, referring to Figure 4 In some embodiments, the cross-section of the annular elastic ring 300 is circular. In the radial direction of the first mounting hole 110, the width of the annular mounting opening 251 is smaller than the width of the annular elastic ring 300. Specifically, the width of the annular mounting opening 251 is smaller than the circular diameter of the cross-section of the annular elastic ring 300. Of course, this is merely an example of an embodiment of the present invention. In other embodiments, the cross-section of the annular elastic ring 300 may also be rectangular, triangular, or the like. This is not specifically limited to this aspect of the present invention. It is sufficient that the cross-section of the annular elastic ring 300 in the radial direction is larger than the width of the annular mounting opening 251 in the radial direction.

[0061] It is understandable that in some embodiments, the installation groove 250 may be eliminated, and the first limiting groove 240 may be directly provided on a side wall of the sleeve portion 220 away from the motor shaft 400 . This invention does not make any specific limitation on this.

[0062] In some embodiments, the annular elastic ring 300 may specifically be a metal spring ring. The metal spring ring has relatively high structural strength and is not prone to aging. In addition, when the metal spring ring is sleeved on the side of the socket part 220 away from the motor rotating shaft 400, the metal spring ring can provide a relatively large elastic contraction force to enable an interference fit between the socket part 220 and the convex part 120, which is conducive to further improving the sealing performance of the motor sealing structure and making the structure of the motor sealing structure more firm and stable.

[0063] It can be understood that the above-mentioned metal spring ring specifically refers to a structure formed by helically winding a metal part along a circular track. The metal part may specifically be an iron product, a stainless steel product, etc., and the present utility model does not make specific limitations thereto.

[0064] It can be understood that in addition to the above-mentioned metal spring ring, the annular elastic ring 300 may also adopt structures such as a rubber ring or a silica gel ring. The present utility model does not make specific limitations thereto, as long as it is ensured that when the annular elastic ring 300 is sleeved on the side of the socket part 220 away from the motor rotating shaft 400, the annular elastic ring 300 can press the socket part 220 under the action of its own elastic contraction force to enable an interference fit between the socket part 220 and the convex part 120.

[0065] Refer to Figures 1 to 6 In some embodiments, a second limiting groove 140 is formed on the front surface of the end cover 100 and winds around the outer periphery of the convex part 120. The seal 200 is located inside the second limiting groove 140, and the front surface of the seal 200 protrudes beyond the outer peripheral edge of the second limiting groove 140.

[0066] By adopting the above structure, the setting of the second limiting groove 140 can further position and limit the seal 200. In addition, when the motor cooperates with a reduction gearbox or other transmission structures, since the front surface of the seal 200 protrudes beyond the outer peripheral edge of the second limiting groove 140, it is convenient to press the reduction gearbox or other transmission structures against the front surface of the seal 200 and cooperate with the end cover 100 to axially extrude the seal 200, thereby improving the connection tightness between the end cover 100 and the reduction gearbox or other transmission structures, and further being conducive to sealing the gap between the end cover 100 and the motor rotating shaft 400, reducing the risk of external dust or liquid entering the motor interior from the gap, and further being conducive to improving the service performance of the motor and extending the service life of the motor.

[0067] Refer to Figures 1 to 9 In some embodiments, the end cover 100 is provided with a plurality of second mounting holes. For example, the end cover 100 is provided with eight second mounting holes, and the second mounting holes are used for the fasteners to pass through so as to connect the end cover 100 with an external device.

[0068] By adopting the above structure, the opening of the second mounting hole can facilitate the installation and fixation of the end cover 100. Specifically, when installing the end cover 100, a fastener can be passed through the second mounting hole and connected to an external device, thereby realizing the installation of the end cover 100, and the operation is convenient and simple. Among them, the external device can specifically be a motor housing, a reduction gearbox, or other external fixing devices or transmission devices, and the present utility model does not make specific limitations thereon.

[0069] It can be understood that, with reference to Figures 1 to 5 , the above eight second mounting holes specifically include four first connection holes 150 and four second connection holes 160. The first connection holes 150 are used for passing fasteners to connect the end cover 100 to the motor housing, and the second connection holes 160 are used for passing fasteners to connect the end cover 100 to an external reduction gearbox or other transmission devices. Among them, the end cover 100 has a rectangular structure, and the four first connection holes 150 are respectively arranged at the four top corners of the end cover 100, and the four second connection holes 160 are also respectively arranged at the four top corners of the end cover 100, thereby enabling the installation of the end cover 100 to be more firm and stable.

[0070] It can be understood that the number of the above second mounting holes is eight, which is only an exemplary illustration of Figures 1 to 5 . In addition, the number of the second mounting holes can also be two, three, four, five, six, seven, nine or more. At least one second mounting hole is a first connection hole 150 for passing a fastener to connect the motor housing, and at least one second mounting hole is a second connection hole 160 for passing a fastener to connect an external reduction gearbox or other transmission devices. The present utility model does not make specific limitations thereon.

[0071] It can be understood that the above end cover 100 is installed on the motor housing through a fastener passing through the second mounting hole, which is only an exemplary illustration of the present utility model. In addition, the end cover 100 can also be integrally formed with the motor housing, and the present utility model does not make specific limitations thereon.

[0072] It can be understood that the above fastener can specifically be a screw fastener or a bolt fastener, etc., and the present utility model does not make specific limitations thereon.

[0073] An embodiment of the present utility model further provides a motor, and this motor is provided with the motor sealing structure of any one of the above embodiments.

[0074] In the motor of the embodiment of the present utility model, by adopting the motor sealing structure of any of the above embodiments, in the sealing structure, the front side surface of the end cover 100 is provided with a protrusion 120, the sealing member 200 is provided with a sleeve portion 220 which is at least sleeved on the side of the protrusion 120 away from the motor shaft 400, and the sleeve portion 220 is further provided with an annular elastic ring 300 on the side away from the motor shaft 400. The annular elastic ring 300 can press the sleeve portion 220 under the action of its own elastic contraction force and make the sleeve portion 220 and the protrusion 120 interference fit, thereby not only It is convenient to position and limit the seal 200, and at the same time can further enhance the sealing performance of the seal 200. Therefore, when the motor needs to cooperate with the reduction box or other transmission device, it is only necessary to press the reduction box or other transmission device against the seal 200, and the seal 200 can be axially compressed in cooperation with the end cover 100, so that the gap between the end cover 100 and the motor shaft 400 can be sealed, reducing the risk of external dust or liquid entering the interior of the motor through the gap, which is beneficial to improving the performance of the motor and extending the service life of the motor.

[0075] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. Motor sealing structure, characterized in that, Including: An end cover (100) is provided with a first mounting hole (110) for a motor rotating shaft (400) to pass through. A convex portion (120) is arranged on the front surface of the end cover (100) and is annularly arranged along the circumference of the first mounting hole (110). The convex portion (120) extends in a direction away from the front surface of the end cover (100). A seal (200) has a socket portion (220) arranged in a ring shape. The socket portion (220) is sleeved at least on one side of the convex portion (120) away from the motor rotating shaft (400). An annular elastic ring (300) is sleeved on one side of the socket portion (220) away from the motor rotating shaft (400) so that the socket portion (220) and the convex portion (120) are in interference fit.

2. The motor sealing structure according to claim 1, wherein, The seal (200) is provided with a relief hole (210) corresponding to the first mounting hole (110). The socket portion (220) is wound around the outer circumference of the relief hole (210), and an annular groove (230) adapted to the convex portion (120) is provided on the rear surface of the socket portion (220). The convex portion (120) is embedded in the annular groove (230). The annular elastic ring (300) is sleeved on the outer circumference of the socket portion (220), and the inner wall of one side of the annular groove (230) away from the relief hole (210) and the inner wall of one side of the convex portion (120) away from the first mounting hole (110) are in interference fit.

3. The motor sealing structure according to claim 2, wherein The convex portion (120) has an anti - detachment portion (130), and the width of the anti - detachment portion (130) gradually increases in a direction away from the front surface of the end cover (100).

4. The motor sealing structure according to claim 2, characterized in that, In the radial direction of the first mounting hole (110), there is a gap between the convex portion (120) and the periphery of the first mounting hole (110), and the rear surface of the socket portion (220) abuts against the front surface of the end cover (100).

5. The motor sealing structure according to claim 2, characterized in that, The seal (200) is provided with a first limiting groove (240) annularly arranged on the outer circumference of the socket portion (220). The first limiting groove (240) is recessed towards the convex portion (120) relative to the outer peripheral wall of the socket portion (220). The annular elastic ring (300) can be embedded in the first limiting groove (240).

6. The motor sealing structure according to claim 5, characterized in that, An installation groove (250) is provided on the front surface of the seal (200). The first limiting groove (240) is formed by the inner wall of one side of the installation groove (250) being recessed towards the convex portion (120) relative to the outer peripheral wall of the socket portion (220). An annular installation opening (251) is provided at the opening of the installation groove (250). In the radial direction of the first mounting hole (110), the width of the annular installation opening (251) is smaller than the width of the annular elastic ring (300).

7. The motor sealing structure according to any one of claims 1 to 6, characterized in that, The annular elastic ring (300) is a metal spring ring.

8. The motor sealing structure according to any one of claims 1 to 6, characterized in that, A second limiting groove (140) surrounding the outer periphery of the protruding portion (120) is formed in the front surface of the end cover (100). The sealing member (200) is located inside the second limiting groove (140), and the front surface of the sealing member (200) protrudes beyond the outer peripheral edge of the second limiting groove (140).

9. The motor sealing structure according to claim 1, characterized in that, At least two second mounting holes are formed in the end cover (100) for a fastener to pass through, so that the end cover (100) is connected to an external device.

10. The electric machine is characterized in that, An electric motor sealing structure according to any one of claims 1 to 9 is provided.

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