Structure for reducing noise of motor

Abstract

The utility model discloses a structure for reducing noise of a motor, which comprises a casing, an end cover fixedly connected to the top end of the casing, a mounting seat fixedly connected to the end cover, an elastic shaft sleeve sleeved in the mounting seat, a hard shaft sleeve sleeved in the elastic shaft sleeve, a fixing ring fixedly connected to the top end of the hard shaft sleeve, and a plurality of elastic sheets uniformly distributed on the fixing ring. A mounting groove is formed in the upper surface of the elastic shaft sleeve, the elastic piece is arranged in the mounting groove, the bottom end of the hard shaft sleeve is fixedly connected with a check ring, the check ring is arranged at the bottom end of the elastic shaft sleeve, and a bearing is mounted in the hard shaft sleeve; the bearing is mounted on the hard shaft sleeve, the elastic shaft sleeve is additionally arranged on the hard shaft sleeve, the noise is effectively reduced by utilizing the buffering and vibration reduction characteristics of the elastic shaft sleeve, and the elastic sheet is additionally arranged in the elastic shaft sleeve, so that the vibration reduction and noise reduction performance of the elastic shaft sleeve is further improved. And the stability and the reliability of the motor are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field, especially a structure for reducing motor noise. BACKGROUND

[0002] In the structure of the motor, the bearing is a vital component to support the motor shaft. In the prior art, the bearing and the end cover of the motor adopt rigid contact. This rigid contact makes the vibration during the operation of the motor directly transmitted to the shell through the bearing, thereby generating a large noise. This not only disturbs the surrounding environment, but also affects the normal operation and service life of the motor. SUMMARY

[0003] The utility model aims at providing a structure for reducing motor noise to solve the problems in the background art.

[0004] To solve the above technical problems, the utility model provides the following technical scheme: a structure for reducing motor noise, comprising a shell, the top end of the shell is fixedly connected with an end cover, the end cover is fixedly connected with a mounting seat, an elastic shaft sleeve is sleeved in the mounting seat, a hard shaft sleeve is sleeved in the elastic shaft sleeve, the top end of the hard shaft sleeve is fixedly connected with a fixed ring, a plurality of elastic sheets are uniformly distributed on the fixed ring, a mounting groove is formed in the upper surface of the elastic shaft sleeve, and the elastic sheets are arranged in the mounting groove, the bottom end of the hard shaft sleeve is fixedly connected with a check ring, the check ring is arranged at the bottom end of the elastic shaft sleeve, a bearing is arranged in the hard shaft sleeve, the bearing is arranged at the top end of the check ring, a limiting sleeve is arranged at the top end of the bearing, the limiting sleeve is screwed in the hard shaft sleeve, and a motor shaft is fixedly connected in the bearing.

[0005] Preferably, a plurality of mounting holes are uniformly distributed on the mounting seat, screws are arranged in the mounting holes, threaded holes are formed in the end cover at positions corresponding to the mounting holes, and the screws are screwed in the threaded holes.

[0006] Preferably, a groove is formed in the elastic shaft sleeve, and the mounting seat is sleeved in the groove.

[0007] Preferably, a circular table surface is arranged at each end of the elastic shaft sleeve.

[0008] Preferably, an annular groove is formed in the limiting sleeve, a dustproof sleeve is arranged in the annular groove, and the dustproof sleeve is sleeved on the motor shaft.

[0009] Preferably, a rotating ring is fixedly connected to the top end of the limiting sleeve.

[0010] The utility model provides a structure for reducing motor noise, which has the advantages that: the utility model adopts the hard shaft sleeve installation bearing, and the elastic shaft sleeve is additionally arranged on the hard shaft sleeve, the noise is effectively reduced by the buffering and damping characteristics of the elastic shaft sleeve, and the damping and noise reduction performance of the elastic shaft sleeve is further improved by additionally arranging the elastic sheet in the elastic shaft sleeve, which not only improves the quietness of the motor operation, but also improves the stability and reliability of the motor. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to make the technical scheme of the embodiments of the utility model or the prior art clearer, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0012] Figure 1 It is the whole main view cut structure schematic diagram of the utility model;

[0013] Figure 2 It is the elastic shaft sleeve three-dimensional cut structure schematic diagram of the utility model;

[0014] Figure 3 It is the hard shaft sleeve three-dimensional cut structure schematic diagram of the utility model;

[0015] Figure 4 It is the limiting sleeve three-dimensional cut structure schematic diagram of the utility model;

[0016] Figure 5 It is the dust cover three-dimensional cut structure schematic diagram of the utility model.

[0017] In the drawing: 1, the casing;11, end cover;12, threaded hole;13, mounting seat;14, mounting hole;15, screw;2, elastic shaft sleeve;21, groove;22, circular table surface;23, installation groove;3, hard shaft sleeve;31, fixed ring;32, elastic sheet;33, baffle;4, bearing;5, limiting sleeve;51, annular groove;52, rotating ring;6, dust cover;7, motor shaft. DETAILED DESCRIPTION

[0018] In order to make the technical scheme of the embodiments of the utility model or the prior art clearer, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0019] Please refer to the attached Figure 1 -attached Figure 5 The utility model provides an embodiment can be used for reducing motor noise's structure, including casing 1, casing 1 top fixedly connected with end cover 11, end cover 11 is fixedly connected with mounting seat 13, mounting seat 13 is sleeved with elastic shaft sleeve 2 in, elastic shaft sleeve 2 is sleeved with hard shaft sleeve 3 in, and the top fixedly connected with fixed ring 31 of hard shaft sleeve 3, and a plurality of elastic sheets 32 are uniformly distributed on fixed ring 31, and mounting groove 23 is seted up on the upper surface of elastic shaft sleeve 2, and elastic sheet 32 is seted up in mounting groove 23, and the bottom fixedly connected with baffle ring 33 of hard shaft sleeve 3, and baffle ring 33 is seted up at the bottom of elastic shaft sleeve 2, and bearing 4 is installed in hard shaft sleeve 3, and bearing 4 is seted up at the top of baffle ring 33, and the top of bearing 4 is provided with limit sleeve 5, and limit sleeve 5 is screwed in hard shaft sleeve 3, and motor shaft 7 is fixedly connected in bearing 4, and end cover 11 is used to close casing 1, and mounting seat 13 is used to install elastic shaft sleeve 2, and hard shaft sleeve 3 is used to install bearing 4, and bearing 4 is used to assist motor shaft 7 rotation, and fixed ring 31 is used to connect elastic sheet 32 and hard shaft sleeve 3, and baffle ring 33 is used to limit elastic shaft sleeve 2 and bearing 4, and limit sleeve 5 is used to limit bearing 4;A plurality of mounting holes 14 are uniformly distributed on mounting seat 13, and screw 15 is installed in mounting hole 14, and threaded hole 12 is seted up on the position of end cover 11 corresponding mounting hole 14, and screw 15 is screwed in threaded hole 12, and threaded hole 12 and mounting hole 14 are used to install screw 15, and screw 15 is used to fix mounting seat 13 on end cover 11;Gutter 21 is seted up on elastic shaft sleeve 2, and mounting seat 13 is sleeved in gutter 21, and gutter 21 is used to accommodate mounting seat 13;Both ends of elastic shaft sleeve 2 are provided with circular table face 22, and circular table face 22 is used to guide when assembling mounting seat 13 and elastic shaft sleeve 2;Limit sleeve 5 is seted up with ring groove 51, and dustproof sleeve 6 is installed in ring groove 51, and dustproof sleeve 6 is sleeved on motor shaft 7, and dustproof sleeve 6 is used to prevent dust from invading bearing 4;Limit sleeve 5 top fixedly connected with rotating ring 52, and rotating ring 52 is used to facilitate rotating limit sleeve 5.

[0020] Working principle: when the utility model is assembled, first, bearing 4 is installed on motor shaft 7, then bearing 4 is installed in hard shaft sleeve 3, dust cover 6 is installed in annular groove 51, rotating rotating ring 52, limiting sleeve 5 is tightened in hard shaft sleeve 3, so that limiting sleeve 5 cooperates with check ring 33 to lock the outer ring of bearing 4, hard shaft sleeve 3 is installed in elastic shaft sleeve 2, so that spring sheet 32 is sleeved in installation groove 23, mounting seat 13 is installed in the groove 21 of elastic shaft sleeve 2, mounting seat 13 is fixed on end cover 11 through screw 15, finally, end cover 11 is installed on casing 1; when motor shaft 7 rotates, elastic shaft sleeve 2 buffers and reduces noise, spring sheet 32 provides additional elastic force for elastic shaft sleeve 2; wherein threaded hole 12 and mounting hole 14 are used for installing screw 15, circular table surface 22 is used for guiding when assembling mounting seat 13 and elastic shaft sleeve 2, fixed ring 31 is used for connecting spring sheet 32 and hard shaft sleeve 3, elastic shaft sleeve 2 is made of soft material such as silica gel and rubber, and hard shaft sleeve 3 is made of hard material such as metal.

[0021] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the term "installation", "connection" should be broad sense understanding, for example, it can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through intermediate medium, can be the communication of two elements inside. For ordinary skilled in the art, the above-mentioned terms can be understood in the specific meaning in the utility model according to specific circumstances.

[0022] The device embodiments described above are only schematic, wherein the units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the embodiments. Those skilled in the art can understand and implement without creative labor.

[0023] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A structure for reducing noise of an electric machine, comprising a casing (1), characterized in that: The top end of the shell (1) is fixedly connected with an end cover (11), the end cover (11) is fixedly connected with a mounting seat (13), the mounting seat (13) is sleeved with an elastic shaft sleeve (2), the elastic shaft sleeve (2) is sleeved with a hard shaft sleeve (3), the top end of the hard shaft sleeve (3) is fixedly connected with a fixed ring (31), the fixed ring (31) is uniformly distributed with a plurality of elastic sheets (32), the upper surface of the elastic shaft sleeve (2) is provided with a mounting groove (23), and the elastic sheet (32) is arranged in the mounting groove (23), the bottom end of the hard shaft sleeve (3) is fixedly connected with a check ring (33), and the check ring (33) is arranged at the bottom end of the elastic shaft sleeve (2), the hard shaft sleeve (3) is provided with a bearing (4), and the bearing (4) is arranged at the top end of the check ring (33), the top end of the bearing (4) is provided with a limiting sleeve (5), and the limiting sleeve (5) is screwed in the hard shaft sleeve (3), and the bearing (4) is fixedly connected with a motor shaft (7).

2. The structure for reducing noise of an electric motor according to claim 1, wherein: The mounting seat (13) is uniformly distributed with a plurality of mounting holes (14), the mounting hole (14) is provided with a screw (15), the end cover (11) is provided with a threaded hole (12) corresponding to the position of the mounting hole (14), and the screw (15) is screwed in the threaded hole (12).

3. The structure for reducing noise of an electric motor according to claim 1, wherein: The elastic shaft sleeve (2) is provided with a groove (21), and the mounting seat (13) is sleeved in the groove (21).

4. The structure for reducing noise of an electric motor according to claim 3, wherein: Both ends of the elastic shaft sleeve (2) are provided with a circular table (22).

5. The structure for reducing noise of an electric motor according to claim 1, wherein: The limiting sleeve (5) is provided with a ring groove (51), the ring groove (51) is provided with a dustproof sleeve (6), and the dustproof sleeve (6) is sleeved on the motor shaft (7).

6. The structure for reducing noise of an electric motor according to claim 5, wherein: The top end of the limiting sleeve (5) is fixedly connected with a rotating ring (52).

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