CN211867409U

CN211867409U - Dual labyrinth dustproof structure of rotor front bearing of angle grinder

Info

Publication number: CN211867409U
Application number: CN202020297940.2U
Authority: CN
Inventors: 周超杰; 章国光; 周天中; 李春凤
Original assignee: Suzhou Huishi Electric Tools Co ltd
Current assignee: Suzhou Huishi Electric Tools Co ltd
Priority date: 2020-03-11
Filing date: 2020-03-11
Publication date: 2020-11-06
Anticipated expiration: 2030-03-11

Abstract

The utility model provides a dual labyrinth dustproof construction of angle mill rotor front bearing, including gear box, clamp plate, fan blade and bearing, constitute the passageway between clamp plate and the fan blade, the one end in passageway communicates in the external world, and the other end in passageway communicates in the bearing, its characterized in that is provided with two at least first wall parts on the clamp plate, is provided with two at least second wall parts on the fan blade, and the passageway is separated by first wall part and second wall part and is snakelike passageway. The utility model discloses compare in prior art and reform transform the passageway between clamp plate and the fan blade into labyrinth passageway, avoid external dust to get into the bearing through the passageway, guarantee that the bearing can not influence the performance or damage because the dust gets into.

Description

Dual labyrinth dustproof structure of rotor front bearing of angle grinder

Technical Field

The utility model relates to an angle mill rotor front bearing particularly, relates to a dual labyrinth dustproof construction of angle mill rotor front bearing.

Background

An angle grinder, also called a grinder or a disc grinder, is a grinding tool for cutting and grinding glass fiber reinforced plastics, and uses a sheet grinding wheel rotating at a high speed, a rubber grinding wheel, a steel wire wheel and the like to grind, cut, remove rust and polish metal components. The angle grinder is suitable for cutting, grinding and brushing metal and stone, and water is not used during operation. Guide plates must be used when cutting stone. Grinding and polishing operations can also be performed for models equipped with electronic control devices, if appropriate accessories are installed on such machines.

Can be provided with the passageway between inside fan blade of angle mill and the clamp plate, the passageway on the existing market all is sharp passageway, and external dust gets into the bearing through the passageway very easily, and then can influence the performance of bearing and damage the bearing even.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a dual labyrinth dustproof construction of angle mill rotor front bearing compares in prior art and reforms transform the passageway between clamp plate and the fan blade into the labyrinth passageway, avoids external dust to get into the bearing through the passageway, guarantees that the bearing can not influence the performance or damage because the dust gets into.

Therefore, the utility model provides a dual labyrinth dustproof construction of angle mill rotor front bearing, including gear box, clamp plate, fan blade and bearing, constitute the passageway between clamp plate and the fan blade, the one end in passageway communicates in the external world, and the other end in passageway communicates in the bearing, its characterized in that is provided with two at least first wall parts on the clamp plate, is provided with two at least second on the fan blade and cuts off the part, and the passageway is cut off the part by first wall part and second and is separated to snakelike passageway.

Furthermore, the first partition part and the second partition part are both convex ribs.

Furthermore, two first partition parts are arranged on the pressure plate, and two second partition parts are arranged on the fan blade.

Further, the first partition parts and the second partition parts are arranged in a staggered mode.

Further, the aisle is divided by the first and second partition parts into an S-shaped aisle.

Further, at least two roundabouts are arranged in the serpentine passageway.

The utility model provides a dual labyrinth dustproof construction of angle mill rotor front bearing is provided with gear box, clamp plate, fan blade and bearing in the angle mill, constitutes the passageway between clamp plate and the fan blade, and the one end in passageway communicates in the external world, and the other end in passageway communicates in the bearing, and above-mentioned structure is the common structure in current angle mill, the utility model discloses aim at the improvement in passageway, specifically say, respectively set up two protruding muscle on clamp plate and the fan blade, four protruding muscle separate the passageway for dual labyrinth structure totally, this labyrinth passageway can prevent external dust to get into the bearing the inside, guarantees that the bearing can not influence the performance or damage because the dust gets into.

Therefore, the utility model discloses compare in prior art and reform transform the passageway between clamp plate and the fan blade into labyrinth passageway, avoid external dust to get into the bearing through the passageway, guarantee that the bearing can not influence the performance or damage because the dust gets into.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a schematic structural diagram of a double labyrinth type dustproof structure of a front bearing of a rotor of an angle grinder, according to an embodiment of the present invention;

fig. 2 is an enlarged view of a portion a in fig. 1.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The first embodiment is as follows:

referring to fig. 1 to 2, the present embodiment provides a double labyrinth type dust-proof structure for a front bearing of a rotor of an angle grinder, which includes a gear box 1, a pressure plate 2, a fan blade 3 and a bearing 4, wherein a passageway 5 is formed between the pressure plate 2 and the fan blade 3, one end of the passageway 5 is communicated with the outside, and the other end of the passageway 5 is communicated with the bearing 4, and the double labyrinth type dust-proof structure is characterized in that at least two first partition members 21 are arranged on the pressure plate 2, at least two second partition members 31 are arranged on the fan blade 3, and the passageway 5 is partitioned into a serpentine passageway by the first partition members 21 and the second partition members 31.

With continued reference to fig. 1 to 2, the first partition member 21 and the second partition member 31 are both ribs, the pressing plate 2 is provided with two first partition members 21, the fan blade 3 is provided with two second partition members 31, the first partition members 21 and the second partition members 31 are arranged in a staggered manner, the aisle 5 is partitioned into an S-shaped aisle by the first partition members 21 and the second partition members 31, and the serpentine aisle is provided with at least two roundabout portions therein.

Example two:

referring to fig. 1 to fig. 2, a double labyrinth dustproof structure of a front bearing of a rotor of an angle grinder according to a second embodiment of the present invention is shown in the drawings, and the present embodiment further adopts the following technical solutions as improvements on the basis of the above embodiments: the passageway 5 in the first embodiment is isolated as a serpentine passageway, and actually, the passageway can be a labyrinth passageway with other structures, so that the effect of isolating dust can be achieved.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides a dual labyrinth dustproof construction of angle mill rotor front bearing, includes gear box (1), clamp plate (2), fan blade (3) and bearing (4), clamp plate (2) with constitute between fan blade (3) and say (5), the one end of saying (5) communicates in the external world, just the other end of passageway (5) communicate in bearing (4), its characterized in that, be provided with two at least first wall parts (21) on clamp plate (2), be provided with two at least second wall parts (31) on fan blade (3), it is by to say (5) first wall part (21) with second wall part (31) separate into snakelike passageway.

2. The double labyrinth type dustproof structure of the rotor front bearing of the angle grinder as claimed in claim 1, wherein said first partition member (21) and said second partition member (31) are both ribs.

3. The double labyrinth type dustproof structure of the rotor front bearing of the angle mill according to claim 1 or 2 is characterized in that two first partition parts (21) are arranged on the pressure plate (2), and two second partition parts (31) are arranged on the fan blade (3).

4. The double labyrinth type dustproof structure of the rotor front bearing of the angle grinder as set forth in claim 3, wherein said first partition member (21) and said second partition member (31) are arranged in a staggered manner.

5. The double labyrinth dust-proof structure of the front bearing of the rotor of the angle grinder as claimed in claim 4, characterized in that the passage (5) is blocked by the first blocking part (21) and the second blocking part (31) as an S-shaped passage.

6. The double labyrinth dust-proof structure for the front bearing of the rotor of the angle grinder as claimed in claim 5, wherein at least two roundabouts are provided in the serpentine passageway.