Heat insulation and vibration isolation device for electric tool

Abstract

The utility model provides a heat insulation and vibration isolation device for an electric tool, and belongs to the technical field of electric tools. The device comprises a shell and a holding sleeve, the holding sleeve is arranged at one end of the shell, a driving assembly is arranged in the shell, an output shaft connected to the driving assembly is arranged in the holding sleeve, a supporting sleeve is arranged between the holding sleeve and the output shaft, and a plurality of supporting elements extending in the axial direction are arranged between the holding sleeve and the supporting sleeve at intervals. The supporting element is tightly attached to the holding sleeve and the supporting sleeve. The supporting element is an elastic non-metal element, and the supporting element is made of an elastic non-metal material. According to the device, the holding sleeve and the supporting sleeve are separated through the elastic nonmetal element, vibration and temperature of the holding part of the electric tool are reduced, and the effects of vibration reduction and heat insulation are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric tools, in particular to a heat and vibration insulation device for electric tools. Background Art

[0002] In the prior art, the metal components of the power tool and the plastic gripping components are generally in hard contact, for example:

[0003] (1) Arrange ribs on the plastic component to contact and support the metal component;

[0004] (2) Arrange ribs on the metal component to provide contact support for the plastic component.

[0005] However, the hard contact solution in the prior art has many shortcomings:

[0006] (1) Metal parts carry bearings and transmission rotors. When bearings and transmission rotors rotate at high speeds, they generate more heat. In addition, the manufacturing errors of the rotors cause imbalance and thus cause greater vibration.

[0007] (2) The heat generated is transferred to the surface of the plastic part at the gripping part through the hard contact of the metal part. When the person holds the tool, it becomes hot and the tool cannot be used for a long time. Especially when the ambient temperature is between 35 and 40 degrees, the surface of the plastic part is more likely to exceed the comfortable gripping temperature of the person (<52 degrees).

[0008] (3) The vibration generated is transmitted to the plastic surface of the grip through the hard contact of the metal parts. If people use the tools for a long time, their hands will become numb and cause occupational diseases and discomfort.

[0009] (4) The higher the speed of the rotating body, the more heat and vibration it generates. To reduce heat generation and vibration, the conventional method is to reduce the speed of the motor or the rotating body, which conflicts with the user's need to improve tool efficiency and is not conducive to the progress of the industry.

[0010] Therefore, there is an urgent need to design a device for heat insulation and vibration isolation of electric tools to solve the above problems. Utility Model Content

[0011] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a device for heat and vibration insulation of electric tools.

[0012] To achieve the above objectives, the present disclosure adopts the following technical solutions:

[0013] According to one aspect of the present disclosure, there is provided a device for heat insulation and vibration isolation of an electric tool, comprising a housing and a gripping sleeve, wherein the gripping sleeve is arranged at one end of the housing, a driving assembly is arranged in the housing, an output shaft connected to the driving assembly is arranged in the gripping sleeve, a supporting sleeve is arranged between the gripping sleeve and the output shaft, a plurality of supporting elements extending in the axial direction are arranged at intervals between the gripping sleeve and the supporting sleeve, and the supporting elements are respectively in close contact with the gripping sleeve and the supporting sleeve;

[0014] The supporting element is an elastic non-metallic element, and the supporting element is made of an elastic non-metallic material.

[0015] In an exemplary embodiment of the present disclosure, the support element includes an annular portion and a straight portion.

[0016] Any two adjacent annular portions are connected via the straight portion, and the straight portion is arranged axially along the support sleeve.

[0017] In an exemplary embodiment of the present disclosure, a plurality of support bone positions are provided on the circumferential outer wall of the support sleeve, and the support bone positions are arranged at intervals along the axial direction of the support sleeve.

[0018] In an exemplary embodiment of the present disclosure, the annular portion is sleeved on the supporting bone position, and the straight portion is located between two adjacent supporting bone positions.

[0019] In an exemplary embodiment of the present disclosure, the cross-section of the support frame is set in a low wind resistance shape.

[0020] In an exemplary embodiment of the present disclosure, the gripping sleeve is made of non-metallic material, and the supporting sleeve is made of metallic material.

[0021] In an exemplary embodiment of the present disclosure, a plurality of circumferential grooves and a plurality of linear grooves extending along the axial direction are arranged at intervals on the outer wall of the gripping sleeve.

[0022] In an exemplary embodiment of the present disclosure, the shell and the gripping sleeve are connected by screws.

[0023] The utility model has at least the following beneficial effects:

[0024] The utility model provides a device for heat insulation and vibration isolation of an electric tool, which separates a grip sleeve and a support sleeve by an elastic non-metallic element, thereby increasing the heat dissipation space between the grip sleeve and the support sleeve, and guides the heat dissipation airflow by an axially extending non-metallic element to reduce airflow energy loss, thereby reducing the vibration and temperature of the grip part of the electric tool, reducing the processing accuracy of the electric tool, and improving the manufacturing economy of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0026] Figure 1 This is a schematic structural diagram of a device for heat and vibration insulation of an electric tool in one embodiment of the present disclosure;

[0027] Figure 2 This is a schematic diagram of the arrangement of support elements in one embodiment of the present disclosure;

[0028] Figure 3 This is an overall diagram of a device for heat and vibration insulation of an electric tool in one embodiment of the present disclosure;

[0029] Figure 4 The present invention is a side view of a device for heat and vibration insulation of an electric tool in one embodiment of the present invention.

[0030] Description of reference numerals:

[0031] 1. Shell; 2. Grip sleeve; 201. Circumferential groove; 202. Linear groove; 3. Output shaft; 4. Support sleeve; 5. Support element; 501. Annular part; 502. Linear part; 6. Support bone position. DETAILED DESCRIPTION

[0032] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present disclosure will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted. In addition, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0033] The present disclosure provides a device for heat and vibration insulation of electric tools, see Figures 1 to 4 , including a shell 1 and a holding sleeve 2. The holding sleeve 2 is arranged at one end of the shell 1. A driving assembly is arranged in the shell 1. An output shaft 3 connected to the driving assembly is arranged in the holding sleeve 2. A supporting sleeve 4 is arranged between the holding sleeve 2 and the output shaft 3. A plurality of supporting elements 5 extending along the axial direction are arranged between the holding sleeve 2 and the supporting sleeve 4 at intervals. The supporting elements 5 are tightly attached to the holding sleeve 2 and the supporting sleeve 4 respectively; the supporting element 5 is an elastic non-metallic element, and the supporting element 5 is made of elastic non-metallic material.

[0034] In the disclosed embodiment, the support elements 5 extending along the axial direction are arranged at circumferential intervals between the holding sleeve 2 and the support sleeve 4, and the support elements 5 are respectively in close contact with the inner wall of the holding sleeve 2 and the outer wall of the support sleeve 4, thereby increasing the heat dissipation space between the holding sleeve 2 and the support sleeve 4, and the support elements 5 separate the holding sleeve 2 from the support sleeve 4 that generates heat / vibrates, and the support elements 5 are elastic elements that reduce the vibration of the holding part by means of vibration isolation, and the support elements 5 are non-metallic elements made of elastic non-metallic materials that reduce the temperature of the holding part by the heat insulation effect of the elastic non-metallic materials.

[0035] Compared with the existing hard contact between the grip and the heat / vibration generating elements, the present invention separates the grip sleeve and the support sleeve by an elastic non-metallic element, thereby increasing the heat dissipation space between the grip sleeve and the support sleeve, reducing the vibration and temperature of the grip part of the power tool, reducing the processing accuracy of the power tool, and improving the manufacturing economy of the product.

[0036] In one embodiment of the present disclosure, a heat dissipation mechanism is also provided in the shell 1, and the heat dissipation mechanism is connected to the space between the holding sleeve 2 and the supporting sleeve 4, and blows air to dissipate heat in the space between the holding sleeve 2 and the supporting sleeve 4, discharges the hot air between the holding sleeve 2 and the supporting sleeve 4, improves the heat dissipation efficiency of the supporting sleeve 4, and improves the thermal insulation effect.

[0037] In one embodiment of the present disclosure, see Figure 2 The support element 5 includes an annular portion 501 and a straight portion 502. Any two adjacent annular portions 501 are connected by the straight portion 502, and the straight portion 502 is arranged axially along the support sleeve 4. In this way, the support element 5 is arranged axially between the grip sleeve 2 and the support sleeve 4 in a strip shape as a whole. The support element 5 can guide the airflow entering between the grip sleeve 2 and the support sleeve 4, thereby improving the heat dissipation efficiency of the support sleeve 4.

[0038] Optionally, only a plurality of annular portions 501 may be arranged axially at intervals between the grip sleeve 2 and the support sleeve 4, or a plurality of annular portions 501 and a plurality of linear portions 502 may be connected at intervals and arranged between the grip sleeve 2 and the support sleeve 4. In this way, the support element 5 may be installed in a conjoined form or in an independent form, which is convenient for assembly and production.

[0039] In one embodiment of the present disclosure, see Figure 1 and Figure 2, a plurality of support bone positions 6 are arranged on the circumferential outer wall of the support sleeve 4, and the support bone positions 6 are arranged at intervals along the axial direction of the support sleeve 4; the annular portion 501 is sleeved on the support bone positions 6, and the straight portion 502 is located between two adjacent support bone positions 6. In this way, the support element 5 is installed on the support bone positions 6, and the support element 5 is conveniently and firmly assembled, which prevents the support element from being offset during the use of the electric tool, and improves the isolation effect of the support element 5 on the grip sleeve 2 and the support sleeve 4.

[0040] Optionally, the cross section of the support bone 6 is set in a low wind resistance shape. In this way, the energy loss of the airflow entering between the grip sleeve 2 and the support sleeve 4 can be reduced.

[0041] In one example, the cross-section of the supporting bone position 6 is teardrop-shaped, shuttle-shaped, racetrack-shaped, circular, or the like.

[0042] Optionally, the shape of the annular portion 501 is adapted to the cross-sectional shape of the supporting bone 6 .

[0043] In one embodiment of the present disclosure, the grip sleeve 2 is made of non-metallic material, and the support sleeve 4 is made of metal material. In this way, the support sleeve 4 made of metal material has good thermal conductivity, which improves its heat dissipation efficiency, while the grip sleeve 2 made of non-metallic material has poor thermal conductivity, which is convenient for people to hold during use and can be used for a long time.

[0044] In one embodiment of the present disclosure, see Figure 3 A plurality of circumferential grooves 201 and a plurality of linear grooves 202 extending along the axial direction are arranged at intervals on the outer wall of the gripping sleeve 2. In this way, the friction force on the surface of the gripping sleeve 2 can be increased, making it convenient to grasp the electric tool when using it.

[0045] In one embodiment of the present disclosure, see Figure 3 and Figure 4 The housing 1 and the grip sleeve 2 are connected by screws. In this way, the housing 1 and the grip sleeve 2 can be quickly disassembled and assembled, which is convenient for inspecting the inside of the power tool.

[0046] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the utility model disclosed herein. This application is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

Claims

1. A device for heat insulation and vibration isolation of an electric tool, comprising a housing (1) and a gripping sleeve (2), wherein the gripping sleeve (2) is arranged at one end of the housing (1), a driving assembly is arranged in the housing (1), an output shaft (3) connected to the driving assembly is arranged in the gripping sleeve (2), and a supporting sleeve (4) is arranged between the gripping sleeve (2) and the output shaft (3), characterized in that: A plurality of support elements (5) extending in the axial direction are arranged at intervals between the gripping sleeve (2) and the support sleeve (4), and the support elements (5) are respectively in close contact with the gripping sleeve (2) and the support sleeve (4); The support element (5) is an elastic non-metal element, and the support element (5) is made of an elastic non-metal material.

2. The device for heat and vibration insulation of electric tools according to claim 1, characterized in that: The support element (5) comprises an annular portion (501) and a straight portion (502). Any two adjacent annular portions (501) are connected via the straight portion (502), and the straight portion (502) is arranged axially along the support sleeve (4).

3. The device for heat and vibration insulation of electric tools according to claim 2, characterized in that: A plurality of support bone positions (6) are arranged on the circumferential outer wall of the support sleeve (4), and the support bone positions (6) are arranged at intervals along the axial direction of the support sleeve (4).

4. The device for heat and vibration insulation of electric tools according to claim 3, characterized in that: The annular portion (501) is sleeved on the supporting bone position (6), and the straight portion (502) is located between two adjacent supporting bone positions (6).

5. The device for heat and vibration insulation of electric tools according to claim 3, characterized in that: The cross section of the support frame (6) is set in a low wind resistance shape.

6. The device for heat and vibration insulation of electric tools according to claim 1, characterized in that: The holding sleeve (2) is made of non-metallic material, and the supporting sleeve (4) is made of metallic material.

7. The device for heat and vibration insulation of electric tools according to claim 1, characterized in that: A plurality of circumferential grooves (201) and a plurality of linear grooves (202) extending in the axial direction are arranged at intervals on the outer wall of the gripping sleeve (2).

8. The device for heat and vibration insulation of electric tools according to claim 1, characterized in that: The housing (1) and the grip sleeve (2) are connected via screws.

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