Noise reduction cover of brushless motor

Abstract

The utility model discloses a noise reduction cover for a brushless motor, which belongs to the technical field of brushless motors, and comprises an inner shell and an outer shell, the inner side of the inner shell is fixedly connected with an interlayer assembly, the bottom of the outer shell is fixedly connected with an installation assembly, the inner side of the inner shell is provided with a ventilation slot, the interlayer assembly comprises an inner ring, and the inner ring is provided with an outer ring. The outer side of the inner ring is fixedly connected with a hollowed-out frame, the outer side of the hollowed-out frame is fixedly connected with an outer ring, the inner shell is arranged to be matched with the outer shell, the motor shell is directly replaced on the basis that the inner shell is used as a noise reduction cover, and the situation that a wrapping type noise reduction cover is additionally arranged outside the motor shell to affect the heat dissipation efficiency of motor operation is avoided; the arranged inner shell is directly arranged outside the motor structure, a certain space is formed between the inner shell and the outer shell to assist in heat dissipation, the inner side of the movable layer of the interlayer assembly is in a closed state and can be opened to allow air flow to pass through so as to facilitate heat dissipation when needed, and the arranged sound insulation foam layer can further improve the noise reduction efficiency of the structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to brushless motor technical field, especially in a kind of brushless motor noise reduction cover. BACKGROUND

[0002] Brushless motor is a kind of by square wave current drive, can convert DC power and mechanical energy each other and does not contain carbon brush rotating electrical machine, using square wave current drive control, inverter power tube realizes conduction or shutdown according to square wave height, makes motor stator armature produce sustained forward magnetic field, drives permanent-magnet rotor rotation.

[0003] The existing brushless motor is prone to produce noise when using, and the noise is easy to spread to the air, causing noise pollution to the surrounding environment and affecting the hearing and work of the surrounding personnel.

[0004] Chinese patent CN221767750U discloses a kind of brushless motor noise reduction device, including brushless motor body, the brushless motor body is externally equipped with two soundproof covers that are symmetrically distributed in front and back, soundproof cover is provided with soundproof cotton, by two soundproof covers merge and close brushless motor body, barrier noise transmission, realize noise reduction, while the sound-absorbing cotton in the interior absorbs noise, attenuates noise, improves the effect of noise reduction.

[0005] For the above problems, the existing patent provides a solution, but usually such device is mostly installed in the motor exterior, the shell of motor itself is wrapped by the outside, thus affecting the heat dissipation effect of brushless motor itself when working.

[0006] Therefore, a kind of brushless motor noise reduction cover is proposed. UTILITY MODEL CONTENTS

[0007] The utility model aims at providing a kind of brushless motor noise reduction cover, which can solve the problem that the existing noise reduction device is mostly installed in the motor exterior, the shell of motor itself is wrapped by the outside, thus affecting the heat dissipation effect of brushless motor itself when working.

[0008] To achieve the above object, the utility model provides the following technical scheme: a kind of brushless motor noise reduction cover, including inner shell and outer shell, the inner side of the inner shell is fixedly connected with layer group component, the bottom of the outer shell is fixedly connected with installation component, the inner side of the inner shell is equipped with ventilation slot;

[0009] The layer group component includes inner ring, the outer side of the inner ring is fixedly connected with hollow frame, the outer side of the hollow frame is fixedly connected with outer ring, the outer side of the outer ring is fixedly connected with movable layer, the outer side of the movable layer is fixedly connected with soundproof foam layer, the soundproof foam layer is arranged at the inner side of the outer shell.

[0010] Preferably, the mounting assembly comprises a chassis, and a surrounding frame is arranged on the outer side of the chassis, and a mounting plate is integrally arranged on the bottom of the surrounding frame.

[0011] Preferably, an air bag is mounted on the inner side of the surrounding frame, and the inner side of the air bag is fixedly connected with the chassis.

[0012] Preferably, hard springs are fixedly connected to the top and bottom of the chassis, and the side, away from the chassis, of the hard spring is fixedly connected with the chassis.

[0013] Preferably, a sliding rod is fixedly connected to the inner side of the surrounding frame, and a sliding hole is arranged on the inner side of the chassis and used in cooperation with the sliding rod, and the inner side of the sliding hole is slidingly connected with the sliding rod.

[0014] Preferably, a bearing is mounted on the inner side of the partition layer assembly, and the inner side of the bearing is movably connected with the motor shaft.

[0015] Preferably, an end disc is rotatably connected to the inner side of the left side of the movable layer, the left side of the movable layer and the inner side of the end disc are both provided with a first groove, and a tail disc is rotatably connected to the inner side of the right side of the movable layer, and the right side of the movable layer and the inner side of the tail disc are both provided with a second groove.

[0016] Preferably, a vice frame is fixedly connected to the left side of the end disc, the outer side of the vice frame is fixedly connected with the outer shell, a tail frame is fixedly connected to the right side of the tail disc, and the outer side of the tail frame is fixedly connected with the outer shell.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] 1. The inner shell is arranged outside the motor structure and has a certain space between the inner shell and the outer shell to assist heat dissipation, the inner side of the movable layer of the partition layer assembly is in a closed state and can be opened when needed to allow air flow to facilitate heat dissipation, and the soundproof foam layer can further improve the noise reduction efficiency of the structure.

[0019] 2. The mounting assembly is arranged, the mounting plate is used for mounting the motor at a required position, the surrounding frame and the air bag are connected with the chassis, and the air bag between the surrounding frame and the chassis can reduce noise generated by vibration of the motor when the motor itself rotates. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a whole structure diagram of the utility model's brushless motor noise reduction cover.

[0021] Figure 2It is the structure schematic view of the partition assembly of the utility model.

[0022] Figure 3 It is the internal structure schematic view of the shell of the utility model.

[0023] Figure 4 It is the internal schematic view of the main body structure of the utility model.

[0024] Figure 5 It is the structure schematic view of the installation assembly of the utility model.

[0025] In the figure, 1, inner shell;2, outer shell;3, partition assembly;301, inner ring;302, hollow frame;303, outer ring;304, movable layer;305, sound insulation foam layer;4, installation assembly;401, base frame;402, surrounding frame;403, mounting plate;404, air bag;405, hard spring;5, bearing;6, ventilation slot;7, sliding rod;8, end disc;9, first slot;10, tail disc;11, second slot;12, tail frame;13, auxiliary frame. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0027] Please refer to Figures 1-5 The utility model provides technical schemes:

[0028] A brushless motor noise reduction cover, including inner shell 1 and outer shell 2, the inner side of inner shell 1 is fixedly connected with partition assembly 3, and the bottom of outer shell 2 is fixedly connected with installation assembly 4, and the inner side of inner shell 1 is provided with ventilation slot 6;

[0029] Partition assembly 3 includes inner ring 301, the outer side of inner ring 301 is fixedly connected with hollow frame 302, the outer side of hollow frame 302 is fixedly connected with outer ring 303, the outer side of outer ring 303 is fixedly connected with movable layer 304, the outer side of movable layer 304 is fixedly connected with sound insulation foam layer 305, and sound insulation foam layer 305 is arranged on the inner side of outer shell 2.

[0030] In the embodiment, the inner shell 1 is directly installed outside the motor by matching the outer shell 2, and the inner shell 1 is assisted in contacting airflow for heat dissipation by the ventilation slot 6, the inner shell 1 and the outer shell 2 are supported by the partition assembly 3, the outer ring 303 of the partition assembly 3 matches the hollow frame 302 and the inner ring 301, which can facilitate the manufacturing and fixing of the structure, and the sound insulation foam layer 305 is installed by the movable layer 304 to improve the noise shielding efficiency, because there is a certain space between the inner shell 1 and the movable layer 304, when the heat dissipation demand is not high, the two first slots 9 and the two second slots 11 can be staggered to improve the internal airtightness, the inside of the movable layer 304 of the partition assembly 3 is in a closed state to isolate the internal noise, and when the heat dissipation pressure is large, the positions of the two first slots 9 and the second slot 11 can be overlapped to be opened for external airflow to flow and dissipate heat.

[0031] Specifically, as shown in Figure 5 , the mounting assembly 4 comprises a chassis 401, and the outer side of the chassis 401 is provided with a surrounding frame 402, and the bottom of the surrounding frame 402 is provided with an integrally formed mounting plate 403.

[0032] Specifically, as shown in Figure 5 , the inner side of the surrounding frame 402 is provided with an air bag 404, and the inner side of the air bag 404 is fixedly connected with the chassis 401.

[0033] Specifically, as shown in Figure 5 , the top and bottom of the chassis 401 are fixedly connected with hard springs 405, and the side away from the chassis 401 of the hard springs 405 is fixedly connected with the chassis 401.

[0034] In the embodiment, by arranging the mounting assembly 4, the device can be installed at the required working position by the mounting plate 403, and the surrounding frame 402 and the air bag 404 are connected with the chassis 401, and the air bag 404 between the surrounding frame 402 and the chassis 401 buffers the vibration when the motor itself rotates, so as to reduce the noise generated by the vibration of the motor itself.

[0035] Specifically, as shown in Figure 5 , the inner side of the surrounding frame 402 is fixedly connected with a sliding rod 7, and the inner side of the chassis 401 is provided with a sliding hole matched with the sliding rod 7, and the inner side of the sliding hole is slidingly connected with the sliding rod 7.

[0036] Specifically, as shown in Figure 4 , the inner side of the partition assembly 3 is provided with a bearing 5, and the inner side of the bearing 5 is movably connected with the motor shaft.

[0037] In the embodiment: by setting the sliding hole cooperates with the slide rod 7, when the surrounding frame 402 and the chassis 401 produce relative movement, the slide rod 7 slides along the sliding hole, which can facilitate the positioning of the relative movement of the structure, and the bearing 5 is arranged to stably support the motor shaft.

[0038] Specifically, as shown in Figure 3 The left side of the end disc 8 is rotatably connected to the inner side of the movable layer 304, and the left side of the movable layer 304 and the inner side of the end disc 8 are both provided with a first slot 9. The right side of the tail disc 10 is rotatably connected to the inner side of the movable layer 304, and the inner side of the tail disc 10 and the right side of the movable layer 304 are both provided with a second slot 11.

[0039] Specifically, as shown in Figure 3 The left side of the end disc 8 is fixedly connected to the auxiliary frame 13, and the outer side of the auxiliary frame 13 is fixedly connected to the outer shell 2. The right side of the tail disc 10 is fixedly connected to the tail frame 12, and the outer side of the tail frame 12 is fixedly connected to the outer shell 2.

[0040] In the embodiment: by setting the end disc 8 cooperates with the first slot 9, it can be convenient to make the two first slots 9 coincide or stagger by relatively rotating the end disc 8. Similarly, relatively rotating the tail disc 10 can adjust the relative position of the two second slots 11, which is convenient for adjusting whether the structure is ventilated or not. By setting the tail frame 12 and the auxiliary frame 13, it can be convenient to fix the position of the tail disc 10 and the end disc 8 through the outer shell 2, and directly adjust the stagger or coincidence of the first slot 9 and the second slot 11 by rotating the movable layer 304.

[0041] Working principle: when in use, directly install the device at the required working position through the mounting plate 403, and connect the surrounding frame 402 and the air bag 404 with the chassis 401. When the motor itself rotates, the air bag 404 between the surrounding frame 402 and the chassis 401 buffers the vibration to reduce the noise generated by the vibration of the motor itself. The inner shell 1 cooperates with the outer shell 2, the inner shell 1 is directly installed outside the motor, and the inner shell 1 is directly installed outside the motor, and the inner shell 1 is directly installed outside the motor. The inner shell 1 and the outer shell 2 are supported by the partition assembly 3, and the outer ring 303 of the partition assembly 3 cooperates with the hollow frame 302 and the inner ring 301 to facilitate the manufacture and fixation of the structure, and the movable layer 304 is installed with the sound insulation foam layer 305 to improve the shielding efficiency of the noise. Because there is a certain space between the inner shell 1 and the movable layer 304, when the heat dissipation demand is not high, the two first slots 9 and the two second slots 11 can be staggered to improve the internal airtightness. The inner side of the movable layer 304 of the partition assembly 3 is in a closed state to isolate the internal noise, and when the heat dissipation pressure is large, the positions of the two first slots 9 and the second slots 11 can be coincided to be opened for external airflow to flow and dissipate heat.

[0042] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A noise reduction cover for a brushless motor, comprising an inner shell (1) and an outer shell (2), characterized in that: The inner shell (1) is fixedly connected to the inner side of the partition assembly (3), the bottom of the outer shell (2) is fixedly connected to the mounting assembly (4), and the inner shell (1) is provided with a ventilation slot (6). The partition assembly (3) includes an inner ring (301), a hollow frame (302) is fixedly connected to the outer side of the inner ring (301), an outer ring (303) is fixedly connected to the outer side of the hollow frame (302), a movable layer (304) is fixedly connected to the outer side of the outer ring (303), and a sound-insulating foam layer (305) is fixedly connected to the outer side of the movable layer (304). The sound-insulating foam layer (305) is located on the inner side of the outer shell (2).

2. The noise reduction cover for a brushless motor according to claim 1, characterized in that: The mounting assembly (4) includes a base frame (401), with a surrounding frame (402) on the outside of the base frame (401) and an integrally formed mounting plate (403) at the bottom of the surrounding frame (402).

3. The brushless motor noise reduction cover according to claim 2, characterized in that: An airbag (404) is installed on the inner side of the enclosure frame (402), and the inner side of the airbag (404) is fixedly connected to the base frame (401).

4. The noise reduction cover for a brushless motor according to claim 3, characterized in that: The top and bottom of the base frame (401) are fixedly connected with rigid springs (405), and the rigid springs (405) are fixedly connected to the base frame (401) on the side away from the base frame (401).

5. A noise reduction cover for a brushless motor according to claim 2, characterized in that: The inner side of the enclosure frame (402) is fixedly connected to a slide rod (7), and the inner side of the base frame (401) is provided with a sliding hole for use with the slide rod (7). The inner side of the sliding hole and the slide rod (7) are slidably connected.

6. The noise reduction cover for a brushless motor according to claim 1, characterized in that: The inner side of the partition assembly (3) is equipped with a bearing (5), and the inner side of the bearing (5) is movably connected to the motor shaft.

7. The noise reduction cover for a brushless motor according to claim 1, characterized in that: An end plate (8) is rotatably connected to the inner side of the left side of the movable layer (304). A first groove (9) is provided on the left side of the movable layer (304) and the inner side of the end plate (8). A tail plate (10) is rotatably connected to the inner side of the right side of the movable layer (304). A second groove (11) is provided on the inner side of the tail plate (10) and the right side of the movable layer (304).

8. A noise reduction cover for a brushless motor according to claim 7, characterized in that: A subframe (13) is fixedly connected to the left side of the end plate (8), and the outer side of the subframe (13) is fixedly connected to the outer shell (2). A tail frame (12) is fixedly connected to the right side of the tail plate (10), and the outer side of the tail frame (12) is fixedly connected to the outer shell (2).

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