A motor bearing pressure plate assembly structure

Abstract

The utility model belongs to the field of motor technology, and specifically discloses a motor bearing pressure plate assembly structure, which includes: a motor housing, a bearing pressure plate, and a plurality of connecting pieces. The motor housing is provided with a bearing mounting hole for mounting a motor bearing; the motor housing is provided with a plurality of first through holes at the outer position of the bearing mounting hole; the bearing pressure plate is provided with a connecting boss, and the connecting boss is located on the side of the bearing pressure plate away from the bearing mounting hole; the connecting piece passes through the first through hole and is connected to the connecting boss. The connecting piece passes through the first through hole and is connected to the connecting boss, so that the bearing pressure plate is positioned and installed at a preset installation position to prevent the bearing pressure plate from falling when the motor housing is turned over, and to avoid axial displacement of the bearing pressure plate; by aligning the connecting piece with the first through hole, the radial movement and circumferential rotation of the bearing pressure plate due to shaking can be prevented, and it is ensured that the bearing pressure plate can be aligned and assembled on the motor housing, thereby improving the installation accuracy of the bearing pressure plate.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to an assembly structure of a motor bearing pressure plate. Background Art

[0002] Normally, the motor bearings do not bear axial force, and the axial clearance of the rotor shaft can be eliminated by butterfly gaskets. However, after the drive gear is integrated on the motor rotor shaft, the motor bearings will bear axial force, and a pressure plate is required to fix the motor bearing structure or a precise grouping and selection of gaskets for assembly process. Among them, when assembling the motor shaft, the housing needs to be turned over to assemble the gear cavity parts. There is a cavity between the bearing pressure plate and the motor rotor. During the housing flipping process, the bearing pressure plate will fall off and produce axial movement; and when the motor shaft is assembled, the bearing pressure plate will move radially and rotate circumferentially due to shaking, which affects the installation accuracy. Utility Model Content

[0003] The utility model aims to provide a motor bearing pressure plate assembly structure to solve the technical problem in the prior art that the bearing pressure plate is prone to axial movement, radial movement and circumferential rotation when the motor is installed.

[0004] In order to achieve the above object, the utility model provides a motor bearing pressure plate assembly structure, which includes:

[0005] A motor housing is provided with a bearing mounting hole for mounting a motor bearing; the motor housing is provided with a plurality of first through holes at the peripheral position of the bearing mounting hole;

[0006] A bearing pressure plate, which is provided with a connecting boss, wherein the connecting boss is located on a side of the bearing pressure plate away from the bearing mounting hole;

[0007] A plurality of connecting members are provided, wherein the connecting members pass through the first through holes and are connected to the connecting bosses.

[0008] Preferably, a positioning boss is provided on one side of the bearing pressure plate facing the bearing mounting hole, and a positioning groove for cooperating with the positioning boss is provided on the motor housing.

[0009] Preferably, the first through hole is arranged in the positioning groove.

[0010] Preferably, the connecting member is a bolt, and the connecting boss is provided with a first connecting hole for threaded connection with the connecting member.

[0011] Preferably, the positioning boss is provided with a second connecting hole communicating with the first connecting hole.

[0012] Preferably, the number of the positioning bosses is three, and the number of the corresponding positioning grooves is three.

[0013] Preferably, the bearing pressure plate is an aluminum part.

[0014] Preferably, the connecting boss is provided with a second through hole, and the connecting member includes a top rod section, an external thread section, and a positioning section which are arranged in sequence, the external thread section is threadedly connected to the second through hole, the positioning section passes through the first through hole, and the end of the top rod section away from the external thread section is used to abut against the rotor of the motor shaft.

[0015] Preferably, an extension portion is further provided at one end of the positioning section away from the external thread section.

[0016] Preferably, it further comprises a tray; the tray is used to support the motor housing, an auxiliary positioning hole is provided on the side of the tray facing the motor housing, the position of the auxiliary positioning hole corresponds to the position of the first through hole, and the extension portion passes through the auxiliary positioning hole.

[0017] The motor bearing pressure plate assembly structure provided by the utility model has the following beneficial effects: the connecting piece passes through the first through hole and is connected to the connecting boss, and the housing can cooperate with the connecting piece to allow the bearing pressure plate to be positioned and installed in a preset installation position to prevent the bearing pressure plate from falling when the motor housing is flipped over, thereby avoiding axial displacement of the bearing pressure plate; moreover, by aligning the connecting piece with the first through hole for assembly, radial movement and circumferential rotation of the bearing pressure plate due to shaking can be prevented, thereby ensuring that the bearing pressure plate can be aligned and assembled on the motor housing, thereby improving the installation accuracy of the bearing pressure plate.

[0018] 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

[0019] Figure 1 It is a structural schematic diagram of the motor bearing pressure plate assembly structure of an embodiment of the utility model;

[0020] Figure 2 It is a schematic cross-sectional structure diagram of the bearing pressure plate of the embodiment of the utility model being positioned with the motor housing by using the positioning boss;

[0021] Figure 3 yes Figure 2 The exploded structural diagram of the motor bearing pressure plate assembly structure shown;

[0022] Figure 4 yes Figure 2 A schematic diagram of the structure of the bearing pressure plate;

[0023] Figure 5 It is a schematic cross-sectional structure diagram of the bearing pressure plate of the embodiment of the utility model being positioned with the motor housing by means of stud bolts;

[0024] Figure 6 yes Figure 5 The exploded structural diagram of the motor bearing pressure plate assembly structure shown;

[0025] Figure 7 yes Figure 6 Schematic diagram of the structure of the bearing pressure plate.

[0026] In the figure, 100, motor housing; 110, bearing mounting hole; 120, first through hole; 130, positioning groove; 200, bearing pressure plate; 210, connecting boss; 211, first connecting hole; 212, second through hole; 220, positioning boss; 221, second connecting hole; 300, connecting piece; 310, push rod section; 320, external thread section; 330, positioning section; 331, extension; 400, tray; 410, auxiliary positioning hole; 500, motor bearing; 600, rotor. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0030] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0031] Please also read Figures 1 to 7Now, the motor bearing pressure plate assembly structure provided by the embodiment of the utility model is described.

[0032] Reference Figures 1 to 3 The motor bearing pressure plate assembly structure of the utility model embodiment includes: a motor housing 100, a bearing pressure plate 200, and a plurality of connecting members 300;

[0033] An installation cavity is provided in the motor housing 100 for accommodating the motor shaft assembly, such as the rotor 600 that supports the motor shaft; the motor housing 100 is provided with a bearing installation hole 110 for installing the motor bearing 500; the motor bearing 500 is placed in the bearing installation hole 110, and the motor bearing 500 is fixed in the bearing installation hole 110 by using the bearing pressure plate 200; the motor housing 100 is provided with a plurality of first through holes 120 at the outer position of the bearing installation hole 110; the first through holes 120 are used to facilitate the positioning of the bearing pressure plate 200 to prevent the bearing pressure plate 200 from being installed misaligned.

[0034] The bearing pressure plate 200 is provided with a connecting boss 210 , and the connecting boss 210 is located on a side of the bearing pressure plate 200 away from the bearing mounting hole 110 . The connecting member 300 passes through the first through hole 120 and is connected to the connecting boss 210 .

[0035] The connecting piece 300 passes through the first through hole 120 and is connected to the connecting boss 210. The housing can cooperate with the connecting piece 300 to allow the bearing pressure plate 200 to be positioned and installed in a preset installation position to prevent the bearing pressure plate 200 from falling when the motor housing 100 is flipped over, thereby avoiding axial displacement of the bearing pressure plate 200. Moreover, by aligning and assembling the connecting piece 300 with the first through hole 120, radial movement and circumferential rotation of the bearing pressure plate 200 due to shaking can be prevented, thereby ensuring that the bearing pressure plate 200 can be aligned and assembled on the motor housing 100, thereby improving the installation accuracy of the bearing pressure plate 200.

[0036] Reference Figures 2 to 4In some embodiments of the utility model, a positioning boss 220 is provided on the side of the bearing pressure plate 200 facing the bearing mounting hole 110, and a positioning groove 130 is provided on the motor housing 100 for cooperating with the positioning boss 220. The outer diameter of the positioning boss 220 is greater than the inner diameter of the first through hole 120, and the size of the positioning groove 130 is adapted to the size of the positioning boss 220. When the positioning boss 220 is embedded in the positioning groove 130, the connecting member 300 can be aligned with the first through hole 120, so that the connecting member 300 passes through the first through hole 120 and is connected to the connecting boss 210, so as to achieve the positioning and assembly of the bearing pressure plate 200. Since the outer diameter of the positioning boss 220 is greater than the inner diameter of the first through hole 120, it is easier to align the positioning boss 220 with the positioning groove 130, which facilitates the bearing pressure plate 200 to be located, so that the connecting member 300 passes through the first through hole 120 and is connected to the connecting boss 210, so as to achieve the positioning and assembly of the bearing pressure plate 200.

[0037] Reference Figures 2 to 4 On the basis of the above, the first through hole 120 is arranged in the positioning groove 130. When the positioning groove 130 is processed, the first through hole 120 can be processed together to facilitate the processing of the motor housing 100 and improve the processing efficiency. In addition, by arranging the first through hole 120 in the positioning groove 130, the positioning boss 220 can be arranged correspondingly on the side of the bearing pressure plate 200 away from the connecting boss 210, so as to form the positioning boss 220 and the connecting boss 210 on the bearing pressure plate 200.

[0038] Reference Figures 2 to 4 On the basis of the above, the connecting member 300 is a bolt, and the connecting boss 210 is provided with a first connecting hole 211 for threaded connection with the connecting member 300. That is, the bearing pressure plate 200 is installed on the housing by means of the bolt passing through the first through hole 120 to fix the bearing pressure plate 200, to prevent the bearing pressure plate 200 from axial movement, radial movement, and circumferential rotation during the turning process of the motor housing 100, to ensure that the bearing pressure plate 200 is accurately positioned, and at this time, the bearing pressure plate 200 has been positioned and installed, so that the bearing pressure plate 200 will not move axially, and the bearing pressure plate 200 will not move to contact the rotor 600 of the motor shaft, to prevent the bearing pressure plate 200 from being adsorbed by the rotor 600.

[0039] Reference Figures 2 to 4On the basis of the above, the positioning boss 220 is provided with a second connection hole 221 connected to the first connection hole 211. The second connection hole 221 is connected to the first connection hole 211, and the second connection hole 221 and the first connection hole 211 have the same aperture, so that the connector 300 passes through the second connection hole 221 and is connected to the first connection hole 211, which facilitates the installation of the connector 300. In addition, the second connection hole 221 may also be provided with a thread connected to the connector 300, so that the connector 300 can be directly connected to the positioning boss 220.

[0040] Reference Figures 2 to 4 In some embodiments of the present invention, the number of the positioning bosses 220 is three, and the number of the corresponding positioning grooves 130 is three. The three positioning bosses 220 can better position and fix the annular bearing pressure plate 200 to prevent the bearing pressure plate 200 from rotating in the circumferential direction.

[0041] In some embodiments of the present invention, the bearing pressure plate 200 is an aluminum part, which can prevent the rotor 600 of the motor shaft from providing suction to the bearing pressure plate 200, thereby avoiding the bearing pressure plate 200 and the rotor 600 of the motor shaft from being adsorbed on each other.

[0042] Reference Figures 5 to 7 In other embodiments of the utility model, the connecting boss 210 is provided with a second through hole 212, and the connecting member 300 includes a top rod section 310, an external thread section 320, and a positioning section 330 which are arranged in sequence, the external thread section 320 is threadedly connected to the second through hole 212, the positioning section 330 passes through the first through hole 120, and the end of the top rod section 310 away from the external thread section 320 is used to abut against the rotor 600 of the motor shaft. The connecting piece 300 is a stud bolt, which is connected to the bearing pressure plate 200 by the external thread section 320, and is abutted against the rotor 600 of the motor shaft by the push rod section 310, so that there is a distance between the bearing pressure plate 200 and the rotor 600 of the motor shaft to prevent the bearing pressure plate 200 from being adsorbed by the rotor 600 of the motor shaft, and the push rod section 310 is used to push the bearing pressure plate 200 toward the motor housing 100 to prevent the bearing pressure plate 200 from falling off and causing axial movement during the flipping of the motor housing 100, so as to fix the axial position of the bearing pressure plate 200, and the positioning section 330 is used to pass through the first through hole 120 to prevent the bearing pressure plate 200 from radial movement and circumferential rotation due to shaking, thereby ensuring that the bearing pressure plate 200 can be aligned and assembled on the motor housing 100, thereby improving the installation accuracy of the bearing pressure plate 200.

[0043] Reference Figures 5 to 7On the basis of the above, the end of the positioning section 330 away from the external thread section 320 is further provided with an extension portion 331. The extension portion 331 can facilitate the assembly worker to remove the connector 300, so as to prevent the top rod section 310 of the connector 300 from always supporting the rotor 600 of the motor shaft.

[0044] Reference Figures 5 to 7 On the basis of the above, it further includes a tray 400; the tray 400 is used to support the motor housing 100, and an auxiliary positioning hole 410 is provided on the side of the tray 400 facing the motor housing 100, the position of the auxiliary positioning hole 410 corresponds to the position of the first through hole 120, and the extension 331 passes through the auxiliary positioning hole 410. The auxiliary positioning hole 410 is used to cooperate with the first through hole 120 to fix the connecting member 300, avoid the misalignment of the connecting member 300, ensure more accurate installation of the bearing pressure plate 200, and ensure installation accuracy.

[0045] In summary, the connecting piece 300 of the motor bearing pressure plate assembly structure of the present embodiment passes through the first through hole 120 and is connected to the connecting boss 210. The housing can cooperate with the connecting piece 300 to allow the bearing pressure plate 200 to be positioned and installed in a preset installation position to prevent the bearing pressure plate 200 from falling when the motor housing 100 is flipped over, thereby avoiding axial displacement of the bearing pressure plate 200. Moreover, by aligning and assembling the connecting piece 300 with the first through hole 120, radial movement and circumferential rotation of the bearing pressure plate 200 due to shaking can be prevented, thereby ensuring that the bearing pressure plate 200 can be aligned and assembled on the motor housing 100, thereby improving the installation accuracy of the bearing pressure plate 200.

[0046] The above are only preferred implementations of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A motor bearing pressure plate assembly structure, characterized in that: include: A motor housing is provided with a bearing mounting hole for mounting a motor bearing; the motor housing is provided with a plurality of first through holes at the peripheral position of the bearing mounting hole; A bearing pressure plate, which is provided with a connecting boss, wherein the connecting boss is located on a side of the bearing pressure plate away from the bearing mounting hole; A plurality of connecting members are provided, wherein the connecting members pass through the first through holes and are connected to the connecting bosses.

2. The motor bearing pressure plate assembly structure according to claim 1, characterized in that: A positioning boss is provided on one side of the bearing pressure plate facing the bearing mounting hole, and a positioning groove for cooperating with the positioning boss is provided on the motor housing.

3. The motor bearing pressure plate assembly structure according to claim 2, characterized in that: The first through hole is disposed in the positioning groove.

4. The motor bearing pressure plate assembly structure according to claim 3, characterized in that: The connecting member is a bolt, and the connecting boss is provided with a first connecting hole for threaded connection with the connecting member.

5. The motor bearing pressure plate assembly structure according to claim 4, characterized in that: The positioning boss is provided with a second connection hole communicating with the first connection hole.

6. The motor bearing pressure plate assembly structure according to claim 2, characterized in that: The number of the positioning bosses is three, and the number of the corresponding positioning grooves is three.

7. The motor bearing pressure plate assembly structure according to claim 2, characterized in that: The bearing pressure plate is an aluminum part.

8. The motor bearing pressure plate assembly structure according to claim 1, characterized in that: The connecting boss is provided with a second through hole, and the connecting piece includes a push rod section, an external thread section, and a positioning section which are arranged in sequence. The external thread section is threadedly connected to the second through hole, and the positioning section passes through the first through hole. The end of the push rod section away from the external thread section is used to abut against the rotor of the motor shaft.

9. The motor bearing pressure plate assembly structure according to claim 8, characterized in that: An extension portion is also provided at one end of the positioning section away from the external thread section.

10. The motor bearing pressure plate assembly structure according to claim 9, characterized in that: It also includes a tray; the tray is used to support the motor housing, and an auxiliary positioning hole is provided on the side of the tray facing the motor housing. The position of the auxiliary positioning hole corresponds to the position of the first through hole, and the extension portion passes through the auxiliary positioning hole.

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