CN214079549U

CN214079549U - High-efficient hand-held type electric saw of making an uproar that falls

Info

Publication number: CN214079549U
Application number: CN202022757422.7U
Authority: CN
Inventors: 刘占义
Original assignee: Shenzhen Redsun Energy Technology Co ltd
Current assignee: Shenzhen Redsun Energy Technology Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-08-31
Anticipated expiration: 2030-11-25

Abstract

The utility model discloses a high-efficient hand-held type electric saw of making an uproar that falls, including the first structure of making an uproar, saw bit, guard shield and the second of making an uproar structure of falling, the guard shield is inside to be seted up and to protect the chamber, and the inside fixedly connected with of guard shield inhales the sound inside lining, inhales inside cushion chamber, the runner of having seted up in proper order of the sound inside lining simultaneously to inhale the top of sound inside lining and seted up the through-hole, the through-hole sets up with buffering passageway intercommunication, the inside groove of making an uproar that falls of having seted up of saw bit, and fall the inslot portion of making an uproar and bond and fall the pad of making an uproar. This high-efficient hand-held type electric saw of making an uproar falls inhales the inside multiunit that evenly has seted up of sound inside lining and has fallen the structure of making an uproar, and sound energy enters into the inside of cushion chamber through the runner for sound energy rubs in runner, cushion chamber inside, and converts into the heat energy consumption and dispels, constitutes resistive nature amortization structure, can increase the noise reduction effect of guard shield to the saw bit, the structure of making an uproar falls with the first simultaneous working of falling the structure of making an uproar in the second, the noise that reduction saw bit that can be great produced in work.

Description

High-efficient hand-held type electric saw of making an uproar that falls

Technical Field

The utility model relates to an electric saw equipment science and technology technical field specifically is a hand-held type electric saw of making an uproar falls in high efficiency.

Background

Hand-held type electric saw wide application aluminium casting field, extrusion workshop and building field, it has advantages such as cutting speed is fast, high production efficiency, convenient to carry, but the noise pollution that this kind of saw produced in cutting process is extremely serious, the maximum noise level reaches 120 ~ 130dB, bring harm to the physical and mental health of workshop workman and the peripheral resident in workshop on the one hand, on the other hand still can influence the smooth development of site work, the workman works under this kind of environment for a long time, can produce various psychology and physiological disease, bring latent threat for production safety.

In order to solve the above-mentioned drawbacks, the prior art discloses (application number: CN201420353049.0) a high-efficiency noise-reduction handheld electric saw, in which "12 holes 3 are formed in the saw blade 1, the holes 3 are distributed on the saw blade 1 unevenly and asymmetrically, the holes 3 are filled with a powder material 8, and the powder material 8 is sealed in the holes by nuts," with the above-mentioned structure, although the noise generated by the electric saw can be reduced, the noise reduction effect is not good, and there is room for improvement.

Therefore, a high-efficiency noise-reduction handheld electric saw is provided to solve the problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hand-held type electric saw of making an uproar falls in high efficiency to solve the defect that mentions in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high-efficient hand-held type electric saw of making an uproar that falls, falls the structure of making an uproar including the first structure of making an uproar, saw bit, guard shield and the second of making an uproar, the guard shield is inside to have seted up and to protect the chamber, and the inside fixedly connected with of guard shield inhales the sound inside lining, inhales the inside cushion chamber, the runner of having seted up in proper order of sound inside lining simultaneously to inhale the top of sound inside lining and seted up the through-hole, the through-hole sets up with buffering passageway intercommunication, the inside groove of making an uproar that falls of saw bit has been seted up, and fall the inslot portion of making an uproar and bond and fall the pad of making an uproar.

Preferably, the first noise reduction structure is composed of a sound absorption lining and a noise reduction structure, and the noise reduction structure is composed of a buffer cavity and a flow channel.

Preferably, the cushion chamber passes through the runner and protects the chamber intercommunication setting, and the cushion chamber is evenly setting up to the multiunit in inhaling the inside sound inside lining, and cushion chamber inside is provided with the arcwall face, and the surface of runner is provided with the inclined plane, and the cushion chamber is spherical setting simultaneously, and the inclination of runner is 52.

Preferably, the noise reduction slots are uniformly arranged in six groups along the circumferential positions of two surfaces of the saw blade, and the angle between two adjacent groups of noise reduction slots is 60 degrees.

Preferably, the second noise reduction structure is composed of a noise reduction pad and a noise reduction groove, the noise reduction pad and the noise reduction groove are matched in size, and the noise reduction pad is of an oval structure made of polyurethane foam materials.

Preferably, the second noise reduction structure and the first noise reduction structure form a noise reduction system of the handheld electric saw.

Compared with the prior art, the beneficial effects of the utility model are that:

1. a plurality of groups of noise reduction structures are uniformly arranged in the sound absorption lining, sound energy enters the buffer cavity through the flow channel, so that the sound energy is rubbed in the flow channel and the buffer cavity and is converted into heat energy to be dissipated, a resistive noise reduction structure is formed, and the noise reduction effect of the protective cover on the saw blade can be increased;

2. the structure of making an uproar falls in the second and the structure simultaneous working of making an uproar falls in the first, and the noise that reduction saw bit that can be great produced in work realizes carrying out the work of making an uproar falls in the efficient to the saw bit in work.

Drawings

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is a schematic sectional view of the structure A-A of the present invention;

fig. 3 is a schematic view of a partial structure of a first noise reduction structure of the present invention;

fig. 4 is a schematic view of a first noise reduction structure of the present invention;

FIG. 5 is a schematic view of the structural shield of the present invention;

FIG. 6 is a schematic view of the saw blade of the present invention;

fig. 7 is a schematic sectional view of the structure B-B of the present invention.

Reference numbers in the figures: 1. a first noise reducing structure; 2. a saw blade; 3. a shield; 4. a sound absorbing lining; 5. protecting the cavity; 6. a buffer chamber; 7. a flow channel; 8. a noise reduction structure; 9. an arc-shaped surface; 10. an inclined surface; 11. a through hole; 12. a buffer channel; 13. a noise reduction pad; 14. a noise reduction groove; 15. a second noise reducing structure.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: a high-efficiency noise-reduction handheld electric saw comprises a first noise reduction structure 1, a saw blade 2, a shield 3 and a second noise reduction structure 15, wherein a protection cavity 5 is formed inside the shield 3, a sound absorption lining 4 is fixedly connected inside the shield 3, a buffer cavity 6 and a flow channel 7 are sequentially formed inside the sound absorption lining 4, a through hole 11 is formed in the top of the sound absorption lining 4, the through hole 11 is communicated with a buffer channel 12, a noise reduction groove 14 is formed inside the saw blade 2, and a noise reduction pad 13 is bonded inside the noise reduction groove 14; the first noise reduction structure 1 consists of a sound absorption lining 4 and a noise reduction structure 8, and the noise reduction structure 8 consists of a buffer cavity 6 and a flow channel 7; the buffer cavity 6 is communicated with the protection cavity 5 through the flow channel 7, the buffer cavities 6 are uniformly arranged in multiple groups in the sound absorption lining 4, the arc-shaped surface 9 is arranged in the buffer cavity 6, the inclined surface 10 is arranged on the surface of the flow channel 7, meanwhile, the buffer cavity 6 is arranged in a spherical shape, and the inclination angle of the flow channel 7 is 52 degrees; six groups of noise reduction grooves 14 are uniformly arranged along the circumferential positions of two surfaces of the saw blade 2, and the angle between every two adjacent groups of noise reduction grooves 14 is 60 degrees; the second noise reduction structure 15 is composed of two parts, namely a noise reduction pad 13 and a noise reduction groove 14, the sizes of the noise reduction pad 13 and the noise reduction groove 14 are matched, and the noise reduction pad 13 is of an oval structure made of polyurethane foam; the second noise reduction structure 15 and the first noise reduction structure 1 form a noise reduction system of the handheld electric saw.

As shown in fig. 2-3: inhale inside the lining 4 of inhaling and evenly seted up the multiunit and fall structure 8 of making an uproar, sound energy enters into the inside of cushion chamber 6 through runner 7 for sound energy rubs in runner 7, the inside of cushion chamber 6, and converts into the heat energy consumption and dispels, constitutes resistive nature amortization structure, can increase the noise reduction effect of guard shield 3 to saw bit 2.

The working principle is as follows: when the high-efficiency noise-reduction handheld electric saw is used, when the saw blade 2 rotates at a high speed, surrounding air can vibrate violently, so that great sound is emitted, at the moment, the sound-absorbing lining 4 is arranged inside the protective cover 3, the sound-absorbing lining 4 is fixedly connected above the protective cavity 5, the saw blade 2 rotates at a high speed, sound energy is transmitted into the sound-absorbing lining 4, the sound energy enters the buffer cavity 6 through the flow channel 7, the sound energy is rubbed inside the flow channel 7 and the buffer cavity 6 and is converted into heat energy to be dissipated, so that the sound wave passing through the protective cover 3 is weakened, and the first noise reduction structure 1 is formed; the front and the back of saw bit 2 all are provided with six groups and fall the pad 13 of making an uproar, fall the pad 13 of making an uproar for polyurethane foam, form the second and fall the structure 15 of making an uproar, fall the structure 15 of making an uproar and the first simultaneous working of falling the structure 1 of making an uproar of second, the noise that reduction saw bit 2 that can be great produced in work, this is the whole process of this high-efficient hand-held type electric saw work of making an uproar.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high-efficient hand-held type electric saw of making an uproar that falls, falls structure (15) including first noise reduction structure (1), saw bit (2), guard shield (3) and second, its characterized in that: guard shield (3) inside has been seted up and has been protected chamber (5), and guard shield (3) inside fixedly connected with inhales sound inside lining (4), inhales sound inside lining (4) simultaneously and has seted up cushion chamber (6), runner (7) in proper order to inhale the top of sound inside lining (4) and seted up through-hole (11), through-hole (11) and buffering passageway (12) intercommunication setting, the groove of making an uproar (14) fall has been seted up to saw bit (2) inside, and fall the inside pad (13) of making an uproar (14) that bonds of making an uproar (13) have fallen.

2. An efficient noise reducing handheld power saw as defined in claim 1, wherein: the first noise reduction structure (1) is composed of a sound absorption lining (4) and a noise reduction structure (8), and the noise reduction structure (8) is composed of a buffer cavity (6) and a flow channel (7).

3. An efficient noise reducing handheld power saw as defined in claim 1, wherein: cushion chamber (6) are through runner (7) and protect chamber (5) intercommunication setting, and cushion chamber (6) are evenly setting up to the multiunit in inhaling sound inside lining (4), and cushion chamber (6) inside is provided with arcwall face (9), and the surface of runner (7) is provided with inclined plane (10), and cushion chamber (6) are spherical setting simultaneously, and the inclination of runner (7) is 52.

4. An efficient noise reducing handheld power saw as defined in claim 1, wherein: the two circumferential positions of the noise reduction grooves (14) along the two sides of the saw blade (2) are uniformly arranged into six groups, and the angle between every two adjacent groups of noise reduction grooves (14) is 60 degrees.

5. An efficient noise reducing handheld power saw as defined in claim 1, wherein: the second noise reduction structure (15) is composed of a noise reduction pad (13) and a noise reduction groove (14), the noise reduction pad (13) and the noise reduction groove (14) are matched in size, and the noise reduction pad (13) is of an oval structure made of polyurethane foam materials.

6. An efficient noise reducing handheld power saw as defined in claim 1, wherein: the second noise reduction structure (15) and the first noise reduction structure (1) form a noise reduction system of the handheld electric saw.