Motor end cover sealing structure

Abstract

The utility model provides a motor end cover sealing structure which comprises a cover body and a sealing ring, one side of the cover body is provided with an annular body part, the side wall of the annular body part is provided with an annular groove, the annular groove is sleeved with the sealing ring, the annular body part is internally provided with a plurality of horizontal containing grooves, the side walls of the horizontal containing grooves are provided with groove openings communicated with the annular groove, and horizontal sliding blocks are installed in the horizontal containing grooves. The cover body is correspondingly provided with a plurality of vertical through grooves, the vertical through grooves are slidably connected with vertical sliding blocks in a sleeved mode through one-way sawtooth threads, and one ends of the vertical sliding blocks are in conical surface sliding connection with the horizontal sliding blocks. According to the motor end cover sealing structure, on the basis that the sealing ring and the annular groove are sleeved, the horizontal sliding block which slides horizontally and the vertical sliding block which is in conical surface sliding connection with the horizontal sliding block are installed in the annular body part, the acting force of the horizontal sliding block on the sealing ring is increased, the deformation degree of the sealing ring is increased, and the sealing performance of the motor end cover is improved. And the effect of improving the sealing performance between the end cover and the motor shell is further achieved.

Description

Technical Field

[0001] This utility model belongs to the field of motor technology, and specifically relates to a motor end cover sealing structure. Background Technology

[0002] As an important component in modern machinery, the electric motor is mainly composed of a magnetic core, coil windings, housing, and end cover. The motor end cover is a fixed cover installed on the motor housing and is used to support the rotating shaft in the motor housing and seal the internal cavity of the motor. Therefore, the sealing performance of the motor end cover and the motor housing directly affects the normal operation of the entire motor.

[0003] Currently, a sealing ring is generally used to connect the motor end cover and the motor housing. Specifically, the sealing ring is pressed against the inner wall of the motor housing and the outer wall of the protrusion inside the motor end cover, respectively, to achieve a sealed connection. However, in actual motor production, if the sealing ring is too small, it may not be able to press against the inner wall of the motor housing, directly leading to a reduced or even non-existent seal between the motor end cover and the motor housing. If the motor end cover and motor housing are too large, they may not be able to be assembled. Even when the sealing ring is the perfect fit, insufficient pressure from the motor housing and motor on the sealing ring can result in inadequate sealing. Utility Model Content

[0004] To address the aforementioned issues, this utility model proposes a motor end cover sealing structure for assembly at the end of a motor housing. The motor end cover sealing structure includes: a cover body and a sealing ring. One side of the cover body is coaxially provided with an annular portion for assembly with the inner wall of the motor housing. The outer ring sidewall of the annular portion is provided with an annular groove, and the sealing ring is fitted into the inner cavity of the annular groove.

[0005] The inner circumferential array of the ring body has several horizontal receiving grooves, and the side wall of the horizontal receiving groove has a slot that connects to the ring groove. The horizontal receiving groove is horizontally slidably installed with a horizontal slider corresponding to the slot. The cover body has several vertical through grooves corresponding to the several horizontal receiving grooves. The vertical through groove cavity is slidably connected to the vertical slider through a one-way sawtooth thread. One end of the vertical slider extends into the horizontal receiving groove and forms a conical sliding connection with the inner ring side wall of the horizontal slider.

[0006] Furthermore, one end of the vertical slider extends into the horizontal receiving groove at a first distance from the bottom surface of the horizontal receiving groove, and the other end of the vertical slider extends out of the through groove at a second distance from the upper surface of the ring body. The first distance and the second distance are consistent.

[0007] Furthermore, the vertical slider includes a rod body and an end block. The inner ring of the rod body adopts a straight surface structure, and the outer ring sidewall of the rod body adopts an inner conical surface structure. The outer ring sidewall of the rod body is connected to the outer ring sidewall of the vertical through groove by a single sawtooth thread.

[0008] Furthermore, the horizontal slider includes a sealing part and a displacement part, the height of which is higher than the height of the groove, and a predetermined distance is maintained between the outer ring sidewall of the displacement part and the inner ring wall of the outer ring of the horizontal receiving groove.

[0009] Furthermore, each side of the sealing part is provided with a protrusion that is coplanar with the outer ring sidewall, and the corresponding annular groove sidewall is provided with a receiving groove for accommodating the protrusion.

[0010] Furthermore, the ends of several rod sections furthest from the horizontal receiving groove are connected together to a ring plate.

[0011] Furthermore, the sealing ring adopts an annular strip structure.

[0012] Compared with the prior art, the embodiments of this utility model have at least the following advantages:

[0013] The motor end cover sealing structure of this utility model, based on the sleeve connection between the sealing ring and the annular groove, has a horizontally sliding slider installed inside the annular body, and a vertical slider that forms a conical sliding connection with the horizontal slider. The vertical slider further adjusts the horizontal position of the horizontal slider, increases the force exerted by the horizontal slider on the sealing ring, and increases the deformation degree of the sealing ring, thereby improving the sealing effect between the end cover and the motor housing. Furthermore, based on the vertical slider being slidably sleeved in the vertical through-groove cavity through a one-way sawtooth thread, the continuous force exerted by the sleeved vertical slider on the horizontal slider is limited, ensuring the stability of the further deformation state of the sealing ring.

[0014] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the motor end cover sealing structure in an embodiment of this utility model is shown;

[0017] Figure 2 A cross-sectional schematic diagram of the motor end cover sealing structure in an embodiment of this utility model is shown. Figure 1 ;

[0018] Figure 3 A schematic diagram of the horizontal slider and the vertical slider in an embodiment of this utility model is shown;

[0019] Figure 4 A cross-sectional schematic diagram of the motor end cover sealing structure in an embodiment of this utility model is shown. Figure 2 .

[0020] In the figure, 1 is the cover, 2 is the sealing ring, 3 is the ring body, 4 is the ring groove, 5 is the horizontal receiving groove, 6 is the horizontal slider, 601 is the sealing part, 602 is the displacement part, 603 is the protrusion, 7 is the vertical through groove, 8 is the vertical slider, 801 is the rod body, 802 is the end block part, and 9 is the ring connecting plate. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] This utility model provides a motor end cover sealing structure for assembly on the end of a motor housing. Figure 1 A schematic diagram of the motor end cover sealing structure in an embodiment of this utility model is shown. Figure 1 In the middle, the motor end cover sealing structure includes: cover body 1 and sealing ring 2. The cover body 1 is coaxially provided with an annular part 3 for assembly with the inner wall of the motor housing. The outer ring side wall of the annular part 3 is provided with an annular groove 4, and the sealing ring 2 is fitted into the inner cavity of the annular groove 4.

[0023] The inner circumferential array of the ring body 3 has several horizontal receiving grooves 5, and the side wall of the horizontal receiving groove 5 has a groove opening that connects to the ring groove 4. The horizontal receiving groove 5 is horizontally slidably installed with a horizontal slider 6. The cover body 1 has several vertical through grooves 7 corresponding to the several horizontal receiving grooves 5. The outer side wall is slidably fitted with a vertical slider 8. One end of the vertical slider 8 extends into the horizontal receiving groove 5 and forms a conical sliding connection with the inner ring side wall of the horizontal slider 6, so that the vertical slider 8, which moves vertically, drives the horizontal slider 6 to move horizontally.

[0024] In practical use, this application refers to Figure 2A predetermined distance is maintained between the end of the vertical slider 8 that extends into the horizontal receiving groove 5 and the bottom surface of the horizontal receiving groove 5. At this time, the outer ring sidewalls of several horizontal sliders 6 are connected to the sidewalls of the annular groove 4 and together form a first sealing surface that abuts against the sealing ring 2.

[0025] When a vertically downward force is applied to the vertical slider 8 from above, the distance between the end of the vertical slider 8 extending into the horizontal receiving groove 5 and the bottom surface of the horizontal receiving groove 5 will decrease. Based on the conical sliding connection between the end of the vertical slider 8 extending into the horizontal receiving groove 5 and the inner ring sidewall of the horizontal slider 6, the vertical downward movement of the vertical slider 8 will directly drive the horizontal slider 6 to move horizontally towards the groove opening. The outer ring sidewalls of several horizontal sliders 6 together form a second sealing surface that abuts against the sealing ring 2, and the radius of the second sealing surface is larger than the radius of the first sealing surface, which increases the squeezing force on the sealing ring 2 and further improves the sealing effect of the sealing ring 2, thereby improving the sealing performance of the end cover after it is installed at the motor housing port. At the same time, based on the vertical slider 8 being slidably connected to the vertical through groove 7 through a one-way sawtooth thread, the vertical slider 8 is limited to moving downward and not upward, ensuring the stability of the second sealing surface.

[0026] The motor end cover sealing structure of this utility model, based on the sealing ring 2 and the annular groove 4 forming a sleeve, has a horizontally sliding slider 6 installed in the annular body 3, and a vertical slider 8 forming a conical sliding connection with the horizontal slider 6. The vertical slider 8 further adjusts the horizontal position of the horizontal slider 6, increases the force of the horizontal slider 6 on the sealing ring 2, and increases the deformation degree of the sealing ring 2, thereby improving the sealing effect between the end cover and the motor housing. Furthermore, based on the vertical slider 8 slidingly sleeved in the vertical through groove 7 through a one-way sawtooth thread, the continuous force of the sleeved vertical slider 8 on the horizontal slider 6 is limited, ensuring the stability of the further deformation state of the sealing ring 2.

[0027] Specifically, in Figure 2 In the example shown, one end of the vertical slider 8 that extends into the horizontal receiving groove 5 is spaced apart from the bottom surface of the horizontal receiving groove 5 by a first distance, and the other end of the vertical slider 8 that extends out of the through groove 21 is spaced apart from the upper surface of the ring body 3 by a second distance. With the first distance and the second distance being consistent, when the vertical slider 8 is fully inserted into the vertical through groove 7, one end of the vertical slider 8 that extends into the horizontal receiving groove 5 is kept abutting against the bottom surface of the horizontal receiving groove 5, while the other end of the vertical slider 8 is kept flush with the upper surface of the ring body 3, thereby ensuring the structural integrity after the end cap is installed.

[0028] Furthermore, the vertical slider 8 includes a rod body 801 and an end block 802. The inner ring of the rod body 801 adopts a straight surface structure, and the outer ring sidewall of the rod body 801 adopts an inner conical surface structure, so that the cross-section of the rod body 801 adopts a trapezoidal structure with a right angle. This makes the thickness of the rod body 801 at one end facing the horizontal receiving groove 5 less than the thickness at the other end. By increasing the thickness at the other end, the vertical slider 8 has a wider force-bearing surface during vertical downward movement, which makes it easier for the operator to apply force to the vertical slider 8 from above. In addition, the outer ring sidewall of the rod body 801 is connected to the outer ring sidewall of the vertical through groove 7 through a single sawtooth thread. The single sawtooth thread prevents the rod body 801 from moving vertically upward within the vertical through groove 7.

[0029] Correspondingly, in order to ensure that the horizontal slider 6 is completely detached from the horizontal receiving groove 5, the horizontal slider 6 includes a sealing part 601 and a displacement part 602. The height of the displacement part 602 is higher than the height of the groove opening, so that the displacement part 602 cannot detach from the groove opening, thereby limiting the horizontal movement distance of the horizontal slider 6. Furthermore, a predetermined distance is maintained between the outer ring sidewall of the displacement part 602 and the outer ring inner wall of the horizontal receiving groove 5, providing sufficient buffer space for the vertical slider 8 to drive the horizontal slider 6 to move horizontally.

[0030] In this embodiment, each side of the sealing part 601 is provided with a protrusion 603 with the outer ring sidewall coplanar, and the corresponding annular groove 4 sidewall is provided with a receiving groove for accommodating the protrusion 603. By adding the protrusion 603, the contact area between the horizontal slider 6 and the sealing ring 2 is increased. Figure 3 and Figure 4 Although the length of the protrusion 603 in this embodiment is much smaller than the length of the sealing part 601, this does not represent a limitation on the length of the protrusion 603. Those skilled in the art can adjust the length of the protrusion 603 according to actual needs to meet the requirements of the actual motor.

[0031] To further improve the convenience of applying force to the vertical sliders 8 of this application, the ends of the rods 801 away from the horizontal receiving groove 5 are connected to the ring plate 9, so that the operator can use the pressurizing device to press down the vertical sliders 8 simultaneously, so that the horizontal sliders 6 can move horizontally simultaneously, improve the stability of the pressure applied by the horizontal sliders 6 to the sealing ring 2, and improve the overall integrity of the device.

[0032] Meanwhile, in order to increase the contact area between the sealing ring 2 and several horizontal sliders 6, the sealing ring 2 adopts an annular strip structure.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for mutual communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of multiple components or the interaction between multiple components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A motor end cover sealing structure for assembly on the end of a motor housing, characterized in that, include: Cover (1) and sealing ring (2). The cover (1) is coaxially provided on one side with an annular part (3) for assembly with the inner wall of the motor housing. The outer ring side wall of the annular part (3) is provided with an annular groove (4). The sealing ring (2) is fitted into the inner cavity of the annular groove (4). The inner circumferential array of the ring body (3) has several horizontal receiving grooves (5), and the side wall of the horizontal receiving groove (5) has a groove opening that connects to the ring groove (4). The horizontal receiving groove (5) is horizontally slidably installed with a horizontal slider (6) corresponding to the groove opening. The cover (1) has several vertical through grooves (7) corresponding to the several horizontal receiving grooves (5). The inner cavity of the vertical through groove (7) is slidably connected to the vertical slider (8) through a one-way sawtooth thread. One end of the vertical slider (8) extends into the horizontal receiving groove (5) and forms a conical sliding connection with the inner ring side wall of the horizontal slider (6).

2. The motor end cover sealing structure according to claim 1, characterized in that, The vertical slider (8) extends into the horizontal receiving groove (5) at one end, which is spaced apart from the bottom surface of the horizontal receiving groove (5) by a first distance. The other end of the vertical slider (8) extends out of the through groove (21) and is spaced apart from the upper surface of the ring body (3) by a second distance. The first distance and the second distance are consistent.

3. The motor end cover sealing structure according to claim 1, characterized in that, The vertical slider (8) includes a rod body (801) and an end block (802). The inner ring of the rod body (801) adopts a straight surface structure, and the outer ring sidewall of the rod body (801) adopts an inner conical surface structure. The outer ring sidewall of the rod body (801) is connected to the outer ring sidewall of the vertical through groove (7) by a single sawtooth thread.

4. The motor end cover sealing structure according to claim 3, characterized in that, The horizontal slider (6) includes a sealing part (601) and a displacement part (602). The height of the displacement part (602) is higher than the height of the groove opening, and a predetermined distance is maintained between the outer ring sidewall of the displacement part (602) and the inner ring of the outer ring of the horizontal receiving groove (5).

5. The motor end cover sealing structure according to claim 4, characterized in that, Each of the sealing parts (601) has a protrusion (603) on one side with the outer ring sidewalls coplanar, and the corresponding annular groove (4) sidewalls are provided with a receiving groove for accommodating the protrusion (603).

6. The motor end cover sealing structure according to claim 5, characterized in that, The ends of the plurality of rod sections (801) that are away from the horizontal receiving groove (5) are connected together to the ring plate (9).

7. The motor end cover sealing structure according to any one of claims 2-6, characterized in that, The sealing ring (2) adopts an annular strip structure.

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