Motor end cover with good sealing effect

Abstract

The utility model relates to a motor end cover with a good sealing effect, which comprises a tail end cover, a support ring, a sealing ring and a motor shell, and an accommodating cavity is arranged in the tail end cover. The utility model relates to the technical field of motor sealing tail end covers. According to the motor end cover with the good sealing effect, the tail end cover and the motor shell are fixed through the bolts, in the fixing process, the distance between the tail end cover and the motor shell is gradually shortened, the motor shell inserted into the containing cavity pushes the supporting pressing plate, an arc-shaped bent part is bent, and the arc-shaped bent part is an elastic part, so that the sealing effect is good. Therefore, after the motor shell and the tail end cover are fixed, under the elastic influence of the arc-shaped bending part, the outer wall of the sealing ring is in close contact with the inner wall, belonging to the tail end cover, of the motor shell, so that the sealing effect is achieved, the sealing ring does not rotate or slide in the sealing process, the stability can be well kept, and the service life is prolonged. The problem that the sealing effect is poor due to sliding of the sealing ring during installation can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor sealing tail end covers, in particular to a motor end cover with good sealing effect. Background Art

[0002] Due to the influence of some special work or special environment, motors with high sealing performance are required. If the motor has poor sealing performance and cannot effectively resist the entry of dust, oil mist and moisture, the coordination of motor components will not be precise enough, resulting in reduced stability of the motor and reduced transmission performance of the motor. Therefore, in order to solve this problem, it is particularly important to design a motor end cover with good sealing effect.

[0003] Chinese patent publication number CN215419843U discloses a motor end cover with good sealing effect, including a connecting plate, a threaded plate fixedly installed below the connecting plate, a first sealing plate fixedly installed below the connecting plate, a second sealing plate fixedly installed below the connecting plate, an end cover arranged below the connecting plate, a first sealing ring bonded inside the end cover, a second sealing ring bonded inside the end cover, and a threaded groove provided inside the end cover. The advantages of the utility model are: rotating a threaded plate can drive the adjustment plate to be pressed down, which simplifies the working process of the device, and by pressing the adjustment plate down by the threaded plate, the horizontal position of the adjusted plate pressed down is flatter, thereby reducing the probability of uneven fitting of the third sealing ring and the motor housing; sealing the threaded plate and the threaded groove reduces the probability of dust entering the threaded plate and the threaded groove, thereby reducing the probability of dust entering the device from the threaded plate and the threaded groove, and further improving the sealing of the device.

[0004] However, in the above technology, after the end cover and the motor housing are fixed to each other, the sealing ring is slid along the straight direction of the sealing chamber by the spring until it contacts the motor housing, thereby achieving the purpose of sealing the motor housing and the end cover. However, during the sliding process of the sealing ring, it is easy to rub against the side wall of the sealing chamber, causing the sealing ring to have problems such as flanging, which can easily affect the sealing effect. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a motor end cover with good sealing effect, so as to solve the technical problems mentioned in the above background technology.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A motor end cover with good sealing effect, comprising a tail end cover, a support ring, a sealing ring and a motor housing;

[0008] The tail end cover is provided with a receiving cavity inside for installing a support ring and a sealing ring, an axial screw hole is provided at the axial center of the inner cavity wall of the receiving cavity, and the inner diameter of the receiving cavity is equal to the outer diameter of the motor housing;

[0009] The support ring comprises a circular plate, a side wall of the circular plate is provided with an arc-shaped bending portion, and a support pressing plate is provided inside the arc-shaped bending portion;

[0010] The cross section of the sealing ring is the same as the cross section of the supporting ring, and the sealing ring is sleeved on the outer surface of the supporting ring.

[0011] Furthermore, the inner edge of the accommodating cavity is provided with an arc-shaped surface, and the arc-shaped surface is in contact with the side wall of the sealing ring.

[0012] Furthermore, a positioning ring is provided inside the supporting pressure plate, and a positioning groove is provided on the outer side wall of the positioning ring.

[0013] Furthermore, mounting holes are provided at positions of the circular plate and the sealing ring corresponding to the axial screw hole, and a fixing structure is provided inside the mounting hole.

[0014] Furthermore, the fixing structure includes a fixing bolt, which is threadedly matched with the axial screw hole. A clamping plate is provided at one end of the fixing bolt, a hexagonal nut is provided on the side wall of the clamping plate, and an axial hole is opened at the center of the hexagonal nut.

[0015] Furthermore, bolt holes are provided at corresponding positions of the tail end cover and the side wall of the motor housing.

[0016] In summary, the utility model includes at least one of the following beneficial technical effects:

[0017] 1. The motor end cover with good sealing effect is fixed with the tail end cover and the motor housing by bolts. During the fixing process, the distance between the tail end cover and the motor housing gradually shortens, and the motor housing inserted into the accommodating cavity pushes the supporting pressing plate to bend the arc-shaped bending part. Since the arc-shaped bending part is an elastic component, after the motor housing and the tail end cover are fixed, under the influence of the elasticity of the arc-shaped bending part, the outer wall of the sealing ring will be in close contact with the inner wall of the motor housing belonging to the tail end cover, thereby achieving a sealing effect. In addition, during the sealing process, the sealing ring does not rotate or slide, and can maintain stability well, which can effectively avoid the problem of poor sealing effect caused by sliding of the sealing ring during installation;

[0018] 2. The motor end cover with good sealing effect is used to locate the position of the sealing ring through the setting of the positioning ring. After the sealing ring is installed, its inner ring is embedded in the inside of the positioning groove, and then after the sealing ring contacts the motor housing, it can be closely fitted with the end wall of the motor housing. Since the sealing ring is made of rubber material, the end wall of the motor housing will sink into the inside of the sealing ring after contacting the sealing ring, thereby further improving the sealing performance of the motor housing and the tail end cover;

[0019] 3. This motor end cover with good sealing effect is used to locate the relative position of the tail end cover and the motor housing through the setting of bolt holes, and because the inner diameter of the accommodating cavity is equal to the outer diameter of the motor housing, when the tail end cover and the motor housing are connected to each other, the position of the tail end cover can be effectively limited, which can effectively avoid the problem of uneven fitting between the tail end cover and the motor housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 The utility model is a schematic structural diagram of a motor end cover with good sealing effect.

[0022] Figure 2 The utility model is a structural cross-sectional view of a tail end cover of a motor end cover with good sealing effect and a motor housing.

[0023] Figure 3 The utility model is a schematic diagram of the internal structure of a motor end cover accommodating chamber with good sealing effect.

[0024] Figure 4 The utility model is a schematic structural diagram of a tail end cover of a motor end cover with good sealing effect.

[0025] Figure 5 The utility model is a structural schematic diagram of a support ring of a motor end cover with good sealing effect.

[0026] Figure 6 The utility model is a structural schematic diagram of a sealing ring of a motor end cover with good sealing effect.

[0027] Figure 7 The utility model is a schematic diagram of a fixing structure of a motor end cover with good sealing effect and a connecting structure of a support ring, a sealing ring and a tail end cover.

[0028] In the figure, 1, tail end cover; 101, accommodating cavity; 102, axial screw hole; 2, support ring; 201, circular plate; 202, arc-shaped bending portion; 203, support pressure plate; 204, positioning ring; 205, positioning groove; 3, sealing ring; 4, motor housing; 5, mounting hole; 6, fixing structure; 601, fixing bolt; 602, clamping plate; 603, hexagonal nut; 604, shaft hole; 7, bolt hole. DETAILED DESCRIPTION

[0029] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0030] Example:

[0031] Reference Figure 1 - Figure 7 The utility model discloses a motor end cover with good sealing effect, comprising a tail end cover 1, a support ring 2, a sealing ring 3 and a motor housing 4;

[0032] The tail end cover 1 is provided with a receiving cavity 101 for installing the support ring 2 and the sealing ring 3. The inner wall of the receiving cavity 101 is provided with an axial screw hole 102 at the axial center. The inner diameter of the receiving cavity 101 is equal to the outer diameter of the motor housing 4.

[0033] The support ring 2 includes a circular plate 201, a side wall of the circular plate 201 is provided with an arc-shaped bending portion 202, and a support pressing plate 203 is provided inside the arc-shaped bending portion 202;

[0034] The cross section of the sealing ring 3 is the same as that of the supporting ring 2 , and the sealing ring 3 is sleeved on the outer surface of the supporting ring 2 .

[0035] In this embodiment, when the tail end cover 1 is connected to the motor housing 4, the sealing ring 3 is first sleeved on the outer wall of the support ring 2, and then the sealing ring 3 and the support ring 2 are embedded in the interior of the accommodating cavity 101. At this time, the outer wall of the sealing ring 3 fits with the cavity wall of the accommodating cavity 101, so as to achieve the purpose of pre-installing the support ring 2 and the sealing ring 3 in the accommodating cavity 101. At this time, the tail end cover 1 is aligned with the motor housing 4, and the motor housing 4 is inserted into the interior of the accommodating cavity 101. Figure 2As shown, the tail end cover 1 and the motor housing 4 are fixed by bolts. During the fixing process, the distance between the tail end cover 1 and the motor housing 4 gradually becomes shorter, and the motor housing 4 inserted into the accommodating cavity 101 will push the support pressing plate 203 to bend the arc-shaped bending portion. Since the arc-shaped bending portion is an elastic component, after the motor housing 4 and the tail end cover 1 are fixed, under the influence of the elasticity of the arc-shaped bending portion, the outer wall of the sealing ring 3 will be in close contact with the inner wall of the motor housing 4 belonging to the tail end cover 1, thereby achieving a sealing effect. In addition, during the sealing process, the sealing ring 3 does not rotate or slide, and can maintain stability well, which can effectively avoid the problem of poor sealing effect caused by sliding of the sealing ring 3 during installation.

[0036] Since the inner diameter of the accommodating cavity 101 is equal to the outer diameter of the motor housing 4, when the tail end cover 1 and the motor housing 4 are connected to each other, the position of the tail end cover 1 can be effectively limited so that the axis line of the tail end cover 1 and the axis line of the motor housing 4 are in the same straight line, which can effectively avoid the problem of uneven fitting between the tail end cover 1 and the motor housing 4.

[0037] In a further preferred embodiment of the present invention, Figure 1-7 As shown, the inner edge of the accommodating cavity 101 is provided with an arc surface, and the arc surface is in contact with the side wall of the sealing ring 3 .

[0038] In this embodiment, since the inner wall edge of the accommodating cavity 101 is arc-shaped, the arc-shaped portion of the sealing ring 3 can fit tightly with the cavity wall of the accommodating cavity 101, thereby improving the sealing performance of the device.

[0039] In a further preferred embodiment of the present invention, Figure 1-7 As shown, a positioning ring 204 is disposed inside the supporting plate 203 , and a positioning groove 205 is formed on the outer side wall of the positioning ring 204 .

[0040] In this embodiment, the positioning ring 204 is provided to locate the position of the sealing ring 3. After the sealing ring 3 is installed, its inner ring is embedded in the positioning groove 205, so that after the sealing ring 3 contacts the motor housing 4, it can fit tightly with the end wall of the motor housing 4. Since the sealing ring 3 is made of rubber, the end wall of the motor housing 4 will sink into the interior of the sealing ring 3 after contacting the sealing ring 3, thereby further improving the sealing between the motor housing 4 and the tail end cover 1.

[0041] In a further preferred embodiment of the present invention, Figure 1-7 As shown, mounting holes 5 are provided at positions of the circular plate 201 and the sealing ring 3 corresponding to the axial screw hole 102 , and a fixing structure 6 is provided inside the mounting hole 5 .

[0042] In this embodiment, the installation direction of the sealing ring 3 and the support ring 2 is positioned by setting the mounting hole 5. When the sealing ring 3 is sleeved on the outer wall of the support ring 2, the positions of the two mounting holes 5 are made to correspond. When the sealing ring 3 and the support ring 2 are installed inside the accommodating cavity 101, the positions of the mounting holes 5 are made to correspond to the positions of the axial screw holes 102. Then, the fixing structure 6 is inserted into the mounting hole 5, and the fixing structure 6 is fixed to the axial screw hole 102, thereby achieving the purpose of fixing the sealing ring 3 and the support ring 2 inside the tail end cover 1.

[0043] In a further preferred embodiment of the present invention, Figure 1-7 As shown, the fixing structure 6 includes a fixing bolt 601, and the fixing bolt 601 is threadedly matched with the axial screw hole 102. A clamping plate 602 is provided at one end of the fixing bolt 601, and a hexagonal nut 603 is provided on the side wall of the clamping plate 602. An axial hole 604 is opened at the center of the hexagonal nut 603.

[0044] In this embodiment, the fixing bolt 601 is arranged to cooperate with the axial screw hole 102 threadedly to achieve the purpose of fixing the fixing structure 6 to the axial screw hole 102, and in the process of screwing the fixing bolt 601 into the axial screw hole 102, the clamping plate 602 will gradually fit together with the circular plate 201 of the support ring 2, so as to achieve the purpose of clamping the circular plate 201 inside the accommodating cavity 101, and squeeze the sealing ring 3, further improving the tightness of the connection between the sealing ring 3 and the accommodating cavity 101, and the contact surface of the clamping plate 602 and the circular plate 201 is provided with a frosted layer, which can effectively improve the contact friction between the clamping plate 602 and the circular plate 201, and can effectively avoid the problem of loosening of the fixing bolt 601, and the hexagonal nut 603 is arranged to facilitate the installation of the fixing structure 6, and the shaft hole 604 is arranged to support the motor shaft.

[0045] In a further preferred embodiment of the present invention, Figure 1-7 As shown, bolt holes 7 are provided at corresponding positions of the tail end cover 1 and the side walls of the motor housing 4 .

[0046] In the present embodiment, the bolt hole 7 is provided to locate the relative positions of the tail end cover 1 and the motor housing 4, and since the inner diameter of the accommodating cavity 101 is equal to the outer diameter of the motor housing 4, when the tail end cover 1 and the motor housing 4 are connected to each other, the position of the tail end cover 1 can be effectively limited, and then when the fixing bolts are tightened, the position offset between the tail end cover 1 and the motor housing 4 can be effectively avoided, which causes the problem of uneven fitting.

[0047] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A motor end cover with good sealing effect, characterized in that: It comprises a tail end cover (1), a support ring (2), a sealing ring (3) and a motor housing (4); The tail end cover (1) is provided with a receiving cavity (101) inside for installing a support ring (2) and a sealing ring (3); an axial screw hole (102) is provided at the axial center of the inner cavity wall of the receiving cavity (101); and the inner diameter of the receiving cavity (101) is equal to the outer diameter of the motor housing (4); The support ring (2) comprises a circular plate (201), a side wall of the circular plate (201) is provided with an arc-shaped bending portion (202), and a support pressing plate (203) is provided inside the arc-shaped bending portion (202); The cross section of the sealing ring (3) is the same as the cross section of the support ring (2), and the sealing ring (3) is sleeved on the outer surface of the support ring (2).

2. A motor end cover with good sealing effect according to claim 1, characterized in that: The inner edge of the accommodating cavity (101) is provided with an arc-shaped surface, and the arc-shaped surface is in contact with the side wall of the sealing ring (3).

3. A motor end cover with good sealing effect according to claim 2, characterized in that: A positioning ring (204) is provided inside the supporting pressure plate (203), and a positioning groove (205) is provided on the outer side wall of the positioning ring (204).

4. A motor end cover with good sealing effect according to claim 3, characterized in that: The circular plate (201) and the sealing ring (3) are both provided with mounting holes (5) at positions corresponding to the axial screw hole (102), and a fixing structure (6) is provided inside the mounting hole (5).

5. A motor end cover with good sealing effect according to claim 4, characterized in that: The fixing structure (6) includes a fixing bolt (601), the fixing bolt (601) is threadedly matched with the axial screw hole (102), a clamping plate (602) is arranged at one end of the fixing bolt (601), a hexagonal nut (603) is arranged on the side wall of the clamping plate (602), and an axial hole (604) is opened at the center of the hexagonal nut (603).

6. A motor end cover with good sealing effect according to claim 5, characterized in that: Bolt holes (7) are provided at corresponding positions on the side walls of the tail end cover (1) and the motor housing (4).

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