CN202183670U

CN202183670U - Ventilating structure of motor

Info

Publication number: CN202183670U
Application number: CN2011203028250U
Authority: CN
Inventors: 万福; 杜树浩; 房建宏
Original assignee: Chengdu Huachuan Electric Parts Co Ltd
Current assignee: Chengdu Huachuan Electric Parts Co Ltd
Priority date: 2011-08-19
Filing date: 2011-08-19
Publication date: 2012-04-04
Anticipated expiration: 2021-08-19

Abstract

The utility model discloses a ventilating structure of a motor. The ventilating structure of the motor can improve the waterproof performance of the motor. The ventilating structure of the motor includes a shell of the motor. A ventilating hole is arranged in the shell. A ventilating and dustproof cover is installed on the ventilating hole. The ventilating hole is an annular boss arranged on the shell. The ventilating and dustproof cover includes an annular side face connected to a bottom face. A gap is arranged between an end face and the bottom face of the annular boss. An axial fillet is arranged on an inner surface of the annular side face and a radial fillet is arranged on the bottom face. Thus, a ventilating gas is formed between the ventilating and dustproof cover and the ventilating hole. And the reliable connection of the ventilating and dustproof cover and the ventilating hole is guaranteed. Compressible solid material such as PVC or rubber is preferred to be chosen for making the ventilating and dustproof cover. The interior of the shell communicate with the exterior of the shell through the ventilating gap, thereby preventing the temperature rise in the motor caused by continuous working of the motor generates negative air pressure. Water is absorbed into the motor under the negative air pressure. Therefore, the waterproof performance of the motor is improved. The ventilating structure of the motor in the utility model is suitable for motors having high waterproof requirements and especially suitable for wiper motors.

Description

The motor ventilating structure

Technical field

The utility model relates to a kind of motor, especially needs the motor of waterproof.

Background technology

The operational environment of rain shaving electrical machine is in the trickle state, and motor internal is intake easily, thereby influences motor properties and life-span.Traditional protection design is a structure of motor being made sealing, but is difficult to thoroughly seal up.After the motor continuous operation, its internal temperature raises and produces negative pressure, is easy to water is sucked in the motor, and then influences the life-span of motor.

If other motor is in similar operational environment, also can produce the problem of waterproof.

The utility model content

Still not enough reliably inadequately to the protection effect of rainwater in order to overcome existing motor, the utility model technical problem to be solved provides a kind of motor ventilating structure that improves the motor water resistance.

The utility model solves the technical scheme that its technical problem adopted: the motor ventilating structure; The shell that comprises motor; Said shell is provided with air-vent; Ventilative dust cap is installed on the air-vent, has ventilative gap between ventilative dust cap and the air-vent, enclosure is communicated with housing exterior through said ventilative gap.

Shell is provided with the annular boss that holds said air-vent; Said ventilative dust cap comprises the annular side that is connected on the bottom surface; Gapped between annular boss end face and the bottom surface; The inner surface of annular side is provided with first lug boss, the outer wall interference fit of first lug boss and annular boss, the ventilative gap of common formation, the gap between the gap between first lug boss and the annular boss and said annular boss end face and the bottom surface.

The inner surface of bottom surface is provided with second lug boss, and the inwall interference fit of second lug boss and annular boss also forms ventilative gap between second lug boss and annular boss and the annular side.

Said second lug boss is the radial ribs that radially is provided with along the bottom surface.

Said first lug boss is the axial ribs along the axial setting of annular side.

Said ventilative dust cap is with the compressible solids material.

Said compressible solids material is rubber or PVC.

Said ventilative dust cap is one-body molded.

Said motor is and the reducing motor of decelerator one, and the part of said shell is the reducer shell of decelerator, and said air-vent is arranged on the reducer shell.

The beneficial effect of the utility model is: be utilized in the air-vent that is fitted with ventilative dust cap that has dustproof and airing function concurrently is set on the motor housing; Thereby prevent that the motor running hours from causing that the rising of motor internal temperature produces negative pressure water is sucked in the motor, improved the water resistance of motor.The utility model is applicable to the motor that waterproof requirement is higher, especially is suitable for rain shaving electrical machine.

Description of drawings

Fig. 1 is the front view of the ventilative dust cap of the utility model.

Fig. 2 is the left view of Fig. 1.

Fig. 3 is the sketch map of the utility model.

Be labeled as 1-shell, 2-air-vent, the 3-dust cap of breathing freely, the 4-gap of breathing freely, 21-annular boss, 22-annular boss end face, 31-bottom surface, 32-annular side, 33-first lug boss, 34-second lug boss among the figure.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is further specified.

Like Fig. 1, Fig. 2 and shown in Figure 3; The motor ventilating structure of the utility model is included in the air-vent 2 that is provided with on the shell 1 of motor; Ventilative dust cap 3 is installed on the air-vent 2; Have ventilative gap 4 between ventilative dust cap 3 and the air-vent 2, enclosure is communicated with housing exterior through said ventilative gap 4, to keep motor internal and external environment condition air pressure balance; Prevent when shell is poorly sealed, water to be sucked motor internal, thereby further improved the water resistance of motor and taken into account dustproof needs.

Like Fig. 1, Fig. 2 and shown in Figure 3; Installation connection for convenient ventilative dust cap 3; Shell 1 is provided with the annular boss 21 that holds said air-vent 2; Said ventilative dust cap 3 comprises the annular side 32 that is connected on the bottom surface 31, and is gapped between annular boss end face 22 and the bottom surface 31, and the inner surface of annular side 32 is provided with first lug boss 33; The outer wall interference fit of first lug boss 33 and annular boss 21; The dust cap 3 that prevents to breathe freely drops from annular boss 21 and influences dustproof effect, and the gap between the gap between first lug boss 33 and the annular boss 21 and said annular boss end face 22 and the bottom surface 31 constitutes the gap 4 of breathing freely, maintenance motor internal and external environment condition air pressure balance jointly.

Further be; For increasing mutual spacing reliability between ventilative dust cap 3 and the annular boss 21; The inner surface of bottom surface 31 is provided with second lug boss 34; The inwall interference fit of second lug boss 34 and annular boss 21 also forms ventilative gap 4 between second lug boss 34 and annular boss 21 and the annular side 32.

Particularly, for ease of making, said second lug boss 34 can be 31 the radial ribs that radially is provided with along the bottom surface, and like Fig. 1, shown in Figure 2, said radial ribs is separated from each other and symmetrically arranged four.

Particularly, for ease of making, said first lug boss 33 can be the axial ribs along the axial setting of annular side 32, and like Fig. 1, shown in Figure 2, said axial ribs has space and symmetrically arranged four.

Preferably, said ventilative dust cap 3 had both helped keeping described interference fit also to be convenient to assembling with the compressible solids material.Said compressible solids material can be rubber or PVC.

Said ventilative dust cap 3 is preferably made with one-body molded mode, to guarantee anti-dust performance and better overall property.

For motor is the reducing motor with the decelerator one; The part of shell 1 is the reducer shell of decelerator; Can use the described motor ventilating structure of the utility model too, preferably be arranged on said air-vent 2 on the reducer shell this moment, helps protecting the core component of motor.

Embodiment:

Like Fig. 1, Fig. 2 and shown in Figure 3, with the rain shaving electrical machine of decelerator one, the part of the shell 1 of motor is the reducer shell of decelerator; Reducer shell is provided with air-vent 2, and ventilative dust cap 3 is installed on the air-vent 2, and ventilative dust cap 2 is made with rubber; Air-vent 2 comprises the annular boss 21 that is arranged on the reducer shell; Ventilative dust cap 3 comprises the annular side 32 that is connected on the bottom surface 31, and gapped between annular boss end face 22 and the bottom surface 31, the inner surface of annular side 32 is provided with axial ribs; Bottom surface 31 is provided with radial ribs; Thereby between ventilative dust cap 3 and air-vent 2, form ventilative gap 4, and guarantee the ventilative reliable connection of dust cap 3 on air-vent 2, enclosure is through said ventilative gap 4 and housing exterior environmental communication.

Claims

1. motor ventilating structure; The shell (1) that comprises motor; It is characterized in that: said shell (1) is provided with air-vent (2); Ventilative dust cap (3) is installed on the air-vent (2), has ventilative gap (4) between ventilative dust cap (3) and the air-vent (2), enclosure is communicated with housing exterior through said ventilative gap (4).

2. motor ventilating structure as claimed in claim 1; It is characterized in that: shell (1) is provided with the annular boss (21) that holds said air-vent (2); Said ventilative dust cap (3) comprises the annular side (32) that is connected on the bottom surface (31); Gapped between annular boss end face (22) and bottom surface (31); The inner surface of annular side (32) is provided with first lug boss (33), the outer wall interference fit of first lug boss (33) and annular boss (21), the ventilative gap (4) of common formation, the gap between gap between first lug boss (33) and the annular boss (21) and said annular boss end face (22) and bottom surface (31).

3. motor ventilating structure as claimed in claim 2; It is characterized in that: the inner surface of bottom surface (31) is provided with second lug boss (34); The inwall interference fit of second lug boss (34) and annular boss (21) also forms ventilative gap (4) between second lug boss (34) and annular boss (21) and the annular side (32).

4. motor ventilating structure as claimed in claim 3 is characterized in that: said second lug boss (34) is the radial ribs that radially is provided with of along the bottom surface (31).

5. motor ventilating structure as claimed in claim 2 is characterized in that: said first lug boss (33) is the axial ribs along the axial setting of annular side (32).

6. like the described motor ventilating structure of any claim in the claim 1～5, it is characterized in that: said ventilative dust cap (3) is with the compressible solids material.

7. motor ventilating structure as claimed in claim 6 is characterized in that: said compressible solids material is rubber or PVC.

8. motor ventilating structure as claimed in claim 6 is characterized in that: said ventilative dust cap (3) is one-body molded.

9. like the described motor ventilating structure of any claim in the claim 1～5; It is characterized in that: said motor for the reducing motor of decelerator one; The part of said shell (1) is the reducer shell of decelerator, and said air-vent (2) is arranged on the reducer shell.