Noise reduction type motor shell

Abstract

The utility model provides a noise reduction type motor housing, which comprises a motor housing body, one surface of the motor housing body is provided with a pipe barrel sleeved on a motor output shaft, one end of the pipe barrel close to the motor housing body is fixedly connected with a connecting disc, and the connecting disc is fixedly connected with the motor housing body through a plurality of connecting pieces. The inner surface of the pipe barrel is provided with ring-shaped sound-absorbing cotton, the sound-absorbing cotton is sleeved on the output shaft of the motor, and the inner diameter of the sound-absorbing cotton sleeve is larger than the outer diameter of the output shaft of the motor, and the noise reduction device has the following beneficial effects that the noise generated by the output shaft of the motor in the high-speed rotation process is absorbed, and the noise source is reduced.

Description

Technical Field

[0001] The utility model relates to a noise reduction type motor shell, belonging to the technical field of motor accessories. Background Art

[0002] A motor refers to an electromagnetic device that realizes electrical energy conversion or transmission based on the law of electromagnetic induction. Its main function is to generate driving torque. As a power source for electrical appliances or various machines, the motor housing is one of the main components of the motor. The motor rotor is mounted on the motor housing, and the motor output shaft on the motor rotor extends to the outside of the motor housing. During high-speed rotation, the motor output shaft will produce friction with the air and generate noise. Therefore, it is necessary to design a noise-reducing motor housing. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a noise-reducing motor housing to solve the problems raised in the above-mentioned background technology. The present invention absorbs the noise generated by the motor output shaft during high-speed rotation and reduces the noise source.

[0004] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a noise reduction type motor casing, including a motor casing body, one side of the motor casing body is provided with a tube for being sleeved on the motor output shaft, the end of the tube close to the motor casing body is connected and fixed with a connecting disk, the connecting disk is connected and fixed to the motor casing body through a plurality of connecting parts, the inner surface of the tube is installed with a ring-shaped sound-absorbing cotton, the sound-absorbing cotton sleeve is arranged on the motor output shaft, and the inner diameter of the sound-absorbing cotton sleeve is larger than the outer diameter of the motor output shaft.

[0005] Furthermore, the connecting piece includes a connecting screw, and a side of the connecting disk facing away from the motor housing is provided with a plurality of small holes equidistantly in an annular shape, and a side of the motor housing facing the connecting disk is recessed to form a circular groove for storing bearings, and an axial hole for inserting the motor output shaft is provided on the inner surface of the circular groove and is arranged concentrically with the circular groove, and a plurality of slots are evenly provided on the inner surface of the circular groove, and a plurality of circular holes aligned with the small holes are provided on the side of the motor housing facing the connecting disk and are equidistantly provided, and the circular holes are communicated with the slots, and an insert block is inserted in the slot, and an end of the insert block facing the center of the circular groove is processed with an arc surface matching the inner wall of the circular groove, and a side surface of the insert block is provided with a screw hole aligned with the circular hole, and one end of the connecting screw passes through the small hole and the circular hole in sequence and is threadedly connected in the screw hole.

[0006] Furthermore, a rubber head is attached to one end of the insert block in the slot, and the rubber head fits against the inner wall of the slot.

[0007] Furthermore, a plurality of heat dissipation fins are evenly fixed on the outer surface of the motor housing, and the heat dissipation fins and the motor housing are an integrally formed structure.

[0008] Furthermore, two supports are connected and fixed at the lower position of the outer surface of the motor housing, the supports are L-shaped structures, and two fixing holes are symmetrically provided on the upper surface of the horizontal part of the supports. A reinforcing rib connected and fixed to the supports is provided between the two fixing holes, and the reinforcing rib is connected and fixed to the motor housing.

[0009] Furthermore, one end of the motor housing away from the connection disk is open, and a wiring cavity is fixedly connected to the upper position of the outer surface of the end of the motor housing away from the connection disk, and the wiring cavity and the motor housing are an integrally formed structure.

[0010] Furthermore, a plurality of Velcro hook strips are pasted on the inner surface of the tube, a plurality of Velcro wool strips matching with the Velcro hook strips are evenly pasted on the outer surface of the sound-absorbing sponge, and the Velcro hook strips are adhered to the Velcro wool strips.

[0011] Beneficial effects of the utility model:

[0012] 1. Install a tube at one end of the motor housing, and install a ring-shaped sound-absorbing cotton in the tube, so that the structure formed by the tube and the sound-absorbing cotton is sleeved on the motor output shaft, and then the noise generated by the motor output shaft during high-speed rotation is absorbed by the sound-absorbing cotton to achieve the purpose of noise reduction.

[0013] 2. When connecting the motor housing and the connecting plate with connecting screws, insert the plug into the slot to realize the plug-in relationship between the plug with screw hole and the motor housing, and make one end of the connecting screw pass through the small hole and the round hole and then screw into the screw hole to complete the assembly of the connecting plate and the motor housing. When the screw hole is damaged due to wrong thread or other reasons, replace the plug. Compared with processing the screw hole on the motor housing, the cost of replacing parts is reduced, that is, it prevents the situation of replacing the motor housing due to damaged screw hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0015] Figure 1 This is a structural schematic diagram of a noise reduction motor housing of the utility model;

[0016] Figure 2 This is a schematic diagram of the assembly of an insert block in a noise reduction motor housing and a motor housing body according to the utility model;

[0017] Figure 3 This is a schematic diagram of the assembly of a rubber head and an insert block in a noise reduction motor housing of the utility model;

[0018] In the figure: 1-motor housing, 2-wiring cavity, 3-heat dissipation fins, 4-support, 5-reinforcement ribs, 6-fixing holes, 7-connection plate, 8-connection screws, 9-tube, 10-sound-absorbing cotton, 11-round groove, 12-round hole, 13-insert block, 14-axis hole, 15-screw hole, 16-rubber head. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] See also Figure 1 and Figure 2 The utility model provides a technical solution: a noise reduction motor casing, including a motor casing 1, a plurality of heat dissipation fins 3 are evenly fixed on the outer surface of the motor casing 1, and the heat dissipation fins 3 and the motor casing 1 are an integrally formed structure. The design of the heat dissipation fins 3 increases the heat dissipation area of ​​the motor casing 1, and two supports 4 are connected and fixed at the lower position of the outer surface of the motor casing 1. The support 4 is an L-shaped structure, and the two supports 4 realize balanced support for the motor casing 1. Two fixing holes 6 are symmetrically provided on the upper surface of the horizontal part of the support 4, and a reinforcing rib 5 connected and fixed to the support 4 is provided between the two fixing holes 6. The reinforcing rib 5 is connected and fixed to the motor casing 1, and the reinforcing rib 5 is installed between the support 4 and the motor casing 1, so as to improve the mechanical strength of the connection between the support 4 and the motor casing 1, and the end of the motor casing 1 away from the connecting disk 7 is open, and the upper position of the outer surface of the end of the motor casing 1 away from the connecting disk 7 is connected and fixed with a wiring cavity 2, and the wiring cavity 2 and the motor casing 1 are an integrally formed structure, and the wiring cavity 2 provides space for wiring of the motor in the later stage.

[0021] See also Figure 1 , Figure 2 and Figure 3, a tube 9 for sleeved on the motor output shaft is provided on one side of the motor housing 1, and a connecting plate 7 is connected and fixed to one end of the tube 9 close to the motor housing 1, and a plurality of small holes are equidistantly provided in an annular shape on the side of the connecting plate 7 facing away from the motor housing 1, and a circular groove 11 for storing the bearing is formed on the side of the motor housing 1 facing the connecting plate 7, and an axial hole 14 for inserting the motor output shaft is provided on the inner surface of the circular groove 11, and a plurality of slots are evenly provided on the inner surface of the circular groove 11, and a plurality of circular holes 12 aligned with the small holes are equidistantly provided on the side of the motor housing 1 facing the connecting plate 7, and the circular holes 12 are communicated with the slots, and an insert block 13 is inserted in the slot, and an end of the insert block 13 facing the center of the circular groove 11 is processed with an arc surface matching the inner wall of the circular groove 11, and a screw hole 15 aligned with the circular hole 12 is provided on one side of the insert block 13, and one end of the connecting screw 8 is sequentially connected. The small hole and the round hole 12 are passed through and threadedly connected in the screw hole 15. When the motor housing 1 and the connecting plate 7 are connected by the connecting screw 8, the plug block 13 is inserted into the slot to realize that the plug block 13 with the screw hole 15 is formed into a plug-in relationship with the motor housing 1, so that one end of the connecting screw 8 passes through the small hole and the round hole 12 and is screwed into the screw hole 15 to complete the assembly of the connecting plate 7 and the motor housing 1. When the screw hole 15 is damaged due to wrong threads or the like, the plug block 13 can be replaced. Compared with processing the screw hole 15 on the motor housing 1, the cost of replacing parts is reduced, that is, the situation of replacing the motor housing 1 due to damage of the screw hole 15 is prevented. A rubber head 16 is pasted on one end of the plug block 13 in the slot. After the plug block 13 is inserted in the slot, the rubber head 16 fits with the inner wall of the slot, thereby increasing the friction coefficient between the plug block 13 and the inner wall of the slot, and preventing the plug block 13 from falling out of the slot at will.

[0022] See also Figure 1 A ring-shaped sound-absorbing sponge 10 is installed on the inner surface of the tube 9, and the sound-absorbing sponge 10 is sleeved on the motor output shaft. The inner diameter of the sound-absorbing sponge 10 is larger than the outer diameter of the motor output shaft. A plurality of Velcro hook noodles are pasted on the inner surface of the tube 9, and a plurality of Velcro wool noodles matching the Velcro hook noodles are evenly pasted on the outer surface of the sound-absorbing sponge 10, so that the Velcro hook noodles are adhered to the Velcro wool noodles to complete the assembly of the sound-absorbing sponge 10 and the tube 9, the tube 9 is installed at one end of the motor outer shell 1, and a ring-shaped sound-absorbing sponge 10 is installed in the tube 9, so that the structure formed by the tube 9 and the sound-absorbing sponge 10 is sleeved on the motor output shaft, and then the noise generated by the motor output shaft during high-speed rotation is absorbed by the sound-absorbing sponge 10, so as to achieve the purpose of noise reduction.

[0023] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A noise reduction motor housing, comprising a motor housing (1), characterized in that: One side of the motor outer shell (1) is provided with a tube (9) for being sleeved on the motor output shaft. The end of the tube (9) close to the motor outer shell (1) is connected and fixed with a connecting plate (7). The connecting plate (7) is connected and fixed to the motor outer shell (1) through a plurality of connecting parts. The inner surface of the tube (9) is provided with a ring-shaped sound-absorbing sponge (10). The sound-absorbing sponge (10) is sleeved on the motor output shaft. The inner diameter of the sound-absorbing sponge (10) sleeve is larger than the outer diameter of the motor output shaft.

2. A noise reduction motor housing according to claim 1, characterized in that: The connecting member comprises a connecting screw (8); a surface of the connecting plate (7) facing away from the motor housing (1) is provided with a plurality of small holes at equal intervals in a circular shape; a surface of the motor housing (1) facing the connecting plate (7) is recessed to form a circular groove (11) for storing a bearing; an axial hole (14) for inserting a motor output shaft and arranged concentrically with the circular groove (11) is provided on the inner surface of the circular groove (11); a plurality of slots are evenly provided on the inner surface of the motor housing (1) facing the connecting plate ( A plurality of circular holes (12) aligned with the small holes are formed in an annular shape and equidistantly on one side of the circular groove (7); the circular holes (12) are communicated with the slots; an insert block (13) is inserted in the slot; an end of the insert block (13) facing the center of the circular groove (11) is processed with an arc surface matched with the inner wall of the circular groove (11); a screw hole (15) aligned with the circular hole (12) is formed on one side of the insert block (13); one end of the connecting screw (8) passes through the small holes and the circular hole (12) in sequence and is threadedly connected in the screw hole (15).

3. A noise reduction motor housing according to claim 2, characterized in that: A rubber head (16) is attached to one end of the insert block (13) in the slot, and the rubber head (16) fits the inner wall of the slot.

4. The noise reduction motor housing according to claim 1, characterized in that: A plurality of heat dissipation fins (3) are evenly fixed on the outer surface of the motor outer casing (1); the heat dissipation fins (3) and the motor outer casing (1) are an integrally formed structure.

5. The noise reduction motor housing according to claim 1, characterized in that: Two supports (4) are connected and fixed at the lower position of the outer surface of the motor outer shell (1); the supports (4) are of L-shaped structure; two fixing holes (6) are symmetrically provided on the upper surface of the horizontal portion of the supports (4); a reinforcing rib (5) connected and fixed to the supports (4) is provided between the two fixing holes (6); the reinforcing rib (5) is connected and fixed to the motor outer shell (1).

6. The noise reduction motor housing according to claim 1, characterized in that: One end of the motor housing (1) away from the connection disk (7) is open, and a wiring cavity (2) is connected and fixed to the upper portion of the outer surface of the end of the motor housing (1) away from the connection disk (7), and the wiring cavity (2) and the motor housing (1) are an integrally formed structure.

7. The noise reduction motor housing according to claim 1, characterized in that: The inner surface of the tube (9) is pasted with a plurality of Velcro hook strips, and the outer surface of the sound-absorbing sponge (10) is evenly pasted with a plurality of Velcro wool strips that match the Velcro hook strips, and the Velcro hook strips are adhered to the Velcro wool strips.

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