CN218658288U

CN218658288U - Angle sanding machine

Info

Publication number: CN218658288U
Application number: CN202222947345.0U
Authority: CN
Inventors: 高军利
Original assignee: Jiangsu Dartek Technology Co Ltd
Current assignee: Jiangsu Dartek Technology Co Ltd
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2023-03-21
Anticipated expiration: 2032-11-04

Abstract

The utility model discloses an angle grinder, include: a housing; the rear cover is sleeved on the shell; and the elastic piece is arranged between the rear cover and the shell in an interference fit manner. The utility model discloses an angle grinder is through setting up the elastic component between back cover and casing, and with casing and back cover interference fit, makes casing and back cover pass through the elastic component and realize being connected. So set up, make the elastic component can reduce the vibration amplitude of back cover to and reduce the noise that produces in the angle grinder working process.

Description

Angle sanding machine

Technical Field

The utility model relates to an electric tool technical field especially relates to an angle grinder.

Background

The existing electric tool (such as an angle grinder) is generally characterized in that a rear cover is directly sleeved at the rear end of a machine shell and fixed by screws, after the machine shell and the rear cover are matched, the vibration of a rotor of the angle grinder can be directly transmitted to the machine shell and further transmitted to the rear cover, when the rear cover is held by a hand, the hand-numbing feeling is generally generated, people are easy to feel fatigue, the noise is loud, the noise can also damage the hearing of an operator, and the environment is polluted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an angle grinder, it can reduce the vibrations of back shroud to and reduce the noise that produces in the angle grinder working process.

In order to achieve the above object, the present invention provides an angle grinder, comprising:

a housing;

the rear cover is sleeved on the shell;

and the elastic piece is arranged between the rear cover and the machine shell in an interference fit manner.

In one or more embodiments, the housing may be provided with a receiving groove for receiving the elastic member.

In one or more embodiments, a step (11) is arranged on the casing (1), the rear cover (2) is sleeved on the peripheral wall of the step (11), and the accommodating groove (12) is arranged on the peripheral surface of the step (11).

In one or more embodiments, the elastic member and the receiving groove are in interference fit.

In one or more embodiments, the elastic member partially protrudes from the accommodating groove in a radial direction of the housing.

In one or more embodiments, the elastic member protrudes from the accommodating groove by a size of 0.3 to 0.6mm in a radial direction of the housing.

In one or more embodiments, the elastic member is provided with a guide portion at an end thereof facing the rear cover in an axial direction of the housing.

In one or more embodiments, the rear cover is provided with a limiting groove for accommodating the elastic member.

In one or more embodiments, the elastic member is provided in plurality and is installed between the housing and the rear cover at an interval.

In one or more embodiments, the elastic member has a mating surface that mates with an inner peripheral surface of the rear cover.

Compared with the prior art, according to the utility model discloses an angle grinder through setting up the elastic component between back cover and casing, and with casing and back cover interference fit, makes casing and back cover pass through the elastic component and realize being connected. So set up, make the vibrations that the elastic component can reduce the back shroud to and reduce the noise that produces in the angle grinder working process.

Drawings

Figure 1 is a partial exploded view of an angle grinder according to one embodiment of the present invention;

fig. 2 is a partial schematic view of a housing engaged with a resilient member according to an embodiment of the present invention;

figure 3 is a cross-sectional view of an angle grinder according to one embodiment of the present invention;

FIG. 4 is an enlarged view at A in FIG. 3;

fig. 5 is a schematic view of an elastic member according to an embodiment of the present invention.

Description of the main reference numerals:

1. a housing; 11. a step; 12. accommodating grooves; 2. a rear cover; 21. a limiting groove; 3. an elastic member; 31. a guide portion; 32. a mating surface.

Detailed Description

The following detailed description of the present invention is provided with reference to the accompanying drawings, but it should be understood that the scope of the invention is not limited by the detailed description.

Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

As shown in fig. 1, an angle grinder according to an embodiment of the present invention includes a housing 1, an elastic member 3, and a back cover 2 covering the housing 1. The elastic member 3 is disposed between the rear cover 2 and the casing 1, and the elastic member 3 is in interference fit with the casing 1 and the rear cover 2.

It will be understood that the elastic member 3 is arranged between the back cover 2 and the casing 1, i.e. the back cover 2 is not directly connected to the casing 1, but the back cover 2 is connected to the casing 1 via the elastic member 3. Elastic component 3 and

casing

1 and 2 interference fit of back shroud, when back shroud 2 covers and locates casing 1 promptly, through extrusion elastic component 3, elastic component 3 extrudees casing 1, makes elastic component 3 be in compression state, utilizes the elasticity that elastic component 3 produced at compression state, realizes the fixed mounting of back shroud 2 and casing 1.

Wherein, the rear cover 2 can be regarded as the cover and establish on elastic component 3, casing 1 and rear cover 2 interference fit under the effect of elastic force of elastic component 3 that make casing 1 and rear cover 2 connect inseparabler, can not become flexible.

The elastic member 3 may be an elastic member 3 made of rubber or a polymer material, thereby having a shock-absorbing effect on the rear cover 2.

In one embodiment, the housing 1 is provided with a receiving groove 12 for mounting the elastic member 3. The elastic member 3 can be placed in the accommodating groove 12, thereby limiting the elastic member 3.

Specifically, a step 11 is arranged on the housing 1, the rear cover 2 is sleeved on the peripheral wall of the step 11, and the accommodating groove 12 is arranged on the peripheral surface of the step 11. The elastic member 3 may be considered to be disposed between the back cover 2 and the step 11, and the step 11 may make the outer circumferential surfaces of the housing 1 and the back cover 2 have the same size as much as possible, so as to avoid uncomfortable holding of the angle grinder by a user due to different sizes.

Specifically, the elastic element 3 is in interference fit with the accommodating groove 12. In a specific embodiment, the interference fit between the elastic element 3 and the receiving groove 12 can be considered as follows: when placing elastic component 3 in holding (back shroud 2 does not locate casing 1 this moment on), along casing 1's circumference, two inside walls and the 3 interference fit of elastic component of holding tank 12 to play the effect with elastic component 3 fixed mounting on casing 1.

In another embodiment, the interference fit between the elastic element 3 and the receiving groove 12 can be considered as follows: when placing elastic component 3 in holding (back shroud 2 does not overlap and locate casing 1 this moment), along casing 1's circumference, two inside walls and the 3 non-interference fit of elastic component of holding tank 12, locate the back on casing 1 with back shroud 2 cover, owing to in the footpath along casing 1, back shroud 2 extrusion elastic component 3 makes elastic component 3 have little deformation and with two inside wall looks butt of holding tank 12 in casing 1's circumference, this butt can be considered interference fit.

In other embodiments, in any process, along the circumferential direction of the casing 1, the two inner side walls of the accommodating groove 12 are not in interference fit with the elastic member 3. The elastic element 3 and the accommodating groove 12 are in interference fit, which can be considered as follows: the rear cover 2 is sleeved on the casing 1, and the accommodating groove 12 is in interference fit with the elastic part 3 along the radial inner wall of the casing 1.

As shown in fig. 2 to 4, in one embodiment, the elastic member 3 partially protrudes out of the receiving groove 12 along the radial direction of the casing 1. The arrangement is such that the interference fit of the elastic member 3 with the casing 1 and the rear cover 2 is in the radial direction of the casing 1.

Specifically, the size of the elastic element 3 protruding the accommodating groove 12 along the radial direction of the casing 1 is 0.3-0.6 mm. The size of the protrusion 12 of the elastic element 3 can be adjusted according to the material of the elastic element 3 itself.

Since the elastic element 3 is in interference fit with the rear cover 2, that is, when the elastic element 3 is installed on the casing 1, the axial projection of the elastic element 3 along the casing 1 coincides with the axial projection of the rear cover 2 along the casing 1, and in order to facilitate the rear cover 2 to be sleeved on the casing 1, as shown in fig. 2 and 5, in a specific embodiment, a guide portion 31 is disposed on one end of the elastic element 3, which faces toward the rear cover 2, along the axial direction of the casing 1. The guiding portion 31 may facilitate the rear cover 2 to be sleeved on the casing 1 along the axial direction of the casing 1, and is in interference fit with the elastic member 3. Specifically, the guide portion 31 shown in fig. 2 and 5 may be regarded as a guide surface or a guide angle.

As shown in fig. 3 and 4, in one embodiment, the rear cover 2 is provided with a limiting groove 21 for accommodating the elastic member 3. When the elastic member 3 is already mounted on the chassis 1, the limiting groove 21 may serve to position the rear cover 2 to define the mounting position of the rear cover 2 with the chassis 1 and the elastic member 3. In another embodiment, the limiting groove 21 may also serve to fix the elastic member 3, that is, in the installation process of the angle grinder, the elastic member 3 may be fixed in the limiting groove 21 (the fixing mode may be bonding, interference fit, etc.), and then the back cover 2 is sleeved on the housing 1.

In one embodiment, the elastic members 3 are provided in plurality and are spaced between the casing 1 and the rear cover 2. Specifically, as shown in fig. 1 and 3, the elastic member 3 may be four elastic blocks or elastic columns, and is installed between the cabinet 1 and the rear cover 2 at intervals. So set up the effect that can play the stability and the shock attenuation effect that increase whole shock-absorbing structure.

In another embodiment, the elastic member 3 may be one or more elastic rings (or elastic washers) and is installed between the casing 1 and the rear cover 2, and may also serve to increase the stability and damping effect of the whole damping structure.

As shown in fig. 3 to 5, in one embodiment, the elastic member 3 has a mating surface 32 that mates with the inner peripheral surface of the rear cover 2. The mating surface 32 mainly serves to increase the conformability of the joint between the elastic member 3 and the inner peripheral surface of the rear cover 2, and even when the elastic member 3 is in a compressed state, the deformation is more uniform and stable.

To sum up, the utility model discloses an angle grinder is when using, the vibration of rotor in the angle grinder can be absorbed to elastic component 3, and the unbalance amount of the rotor of messenger can not transmit casing 1 and back shroud 2 surfaces to reduce the amplitude of casing 1 and back shroud 2, make the operator grip the angle grinder and not numb the hand, alleviateed user's intensity of labour, and grip more comfortablely, owing to absorbed the vibration by elastic component 3, the noise is produced by the vibration, so the noise that the angle grinder produced has been reduced the injury to the person.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. An angle grinder, comprising:

a housing (1);

the rear cover (2) is sleeved on the shell (1);

and the elastic piece (3) is arranged between the rear cover (2) and the shell (1) in an interference fit manner.

2. An angle grinder as claimed in claim 1, characterised in that the housing (1) is provided with a receiving recess (12) for the resilient member (3).

3. An angle grinder as claimed in claim 2, characterised in that the housing (1) is provided with a step (11), the rear cover (2) is fitted over the peripheral wall of the step (11), and the receiving groove (12) is provided on the outer peripheral surface of the step (11).

4. An angle grinder as claimed in claim 2, characterised in that the resilient member (3) is an interference fit with the receiving recess (12).

5. An angle grinder as claimed in claim 2, characterised in that said resilient member (3) projects partially out of said receiving groove (12) in the radial direction of said housing (1).

6. An angle grinder as claimed in claim 5, characterized in that said elastic member (3) protrudes from said housing groove (12) in the radial direction of said housing (1) by a dimension of 0.3 to 0.6mm.

7. An angle grinder as claimed in claim 1, characterised in that the resilient member (3) is provided with a guide (31) towards the end of the housing (2) in the axial direction of the housing (1).

8. An angle grinder as claimed in claim 1, characterised in that the back cover (2) is provided with a retaining groove (21) for receiving the resilient member (3).

9. An angle grinder as claimed in claim 1, characterised in that the resilient member (3) is provided in plurality and is mounted at spaced intervals between the housing (1) and the rear cover (2).

10. An angle grinder as claimed in claim 1, characterised in that the resilient member (3) has a mating surface (32) which mates with the inner peripheral surface of the back cover (2).