CN101396823A

CN101396823A - Quieter of pneumatic tool

Info

Publication number: CN101396823A
Application number: CNA2007101623052A
Authority: CN
Inventors: 陈泓如
Original assignee: Rexon Industrial Corp Ltd
Current assignee: Rexon Industrial Corp Ltd
Priority date: 2007-09-27
Filing date: 2007-09-27
Publication date: 2009-04-01

Abstract

The invention provides a silencing device for a pneumatic tool, comprising a shell and at least two silencing sheets which are arranged in the shell; the shell is provided with a circumferential wall and a plurality of embedding parts which are arranged on the circumferential wall at intervals along the circumferential direction and extend in the axial direction; the silencing sheets are provided with a plurality of silencing holes and at least a clamping part which is arranged on the external circumferential surface and is sheathed with the embedding part; furthermore, the silencing holes of two adjacent laminated silencing sheets are arranged in a staggered way; therefore, as the silencing holes of the two adjacent laminated silencing sheets are arranged in the staggered way, the airway is circuitous, the airflow speed and the pressure are greatly reduced, thus lowering the volume.

Description

Air tool silencing means

Technical field

The present invention relates to a kind of pneumatic tool, particularly relate to a kind of air tool silencing means.

Background technology

As shown in Figure 1, existing a kind of air tool silencing means, be mounted on the body 1, and this silencing means comprises bloop 3 and most the noise reduction corpus fibrosums 4 that are arranged on described bloop 3 one sides that end body 2, a most sheet are installed in these end body 2 inside.This end body 1 inside is provided with the internal diameter district 201 in most different apertures, and described bloop 3 all has most bloops 301, and described noise reduction corpus fibrosum 4 is repeatedly to put and be installed in respectively in the internal diameter district 201 in different apertures with bloop 3.

When the gases at high pressure of pneumatic tool inside enter this silencing means, utilize the setting of the bloop 301 and the noise reduction corpus fibrosum 4 of bloop 3, reach the noise reduction purpose of expection.

Though this air tool silencing means can reach its intended purposes, following disappearance is arranged still in use:

One, bloop 3, noise reduction corpus fibrosum 4 outside dimensions that are installed in the internal diameter district 201 of different inner diameters are also all different, and the number of parts when not only making is many, also trouble comparatively all in handling of goods and materials and assembly.

Two, understand deterioration failure after described noise reduction corpus fibrosum 4 uses a period of times, must change often.

Summary of the invention

The objective of the invention is provide a kind of produce preferable erasure effect and member kind and quantity is few, assembly easily, the air tool silencing means of part long service life.

The air tool silencing means of the present invention, this pneumatic tool also includes a body and a top cover that is installed on this body, this top cover has most steam vents, this silencing means is that corresponding described steam vent is installed on this top cover, and comprises a housing and at least two bloops that are installed in this enclosure interior.This housing is to be hollow tube-shape, and has a perisporium and most interlocking portions that are disposed on this perisporium and extend vertically along hoop that center on an axis and define an endoporus.Described bloop is mounted in the endoporus of this housing, and respectively have most and to the bloop that is provided with, one outer peripheral face that should perisporium and at least one are located at this outer peripheral face and the fastening part nested against one another with the interlocking portion of this housing along this housing shaft, be the setting of staggering along this housing shaft to the bloop of adjacent two bloops repeatedly putting, along this housing shaft in the fastening part of adjacent two bloops repeatedly putting is embedded interlocking portion at diverse location.

Beneficial effect of the present invention is: utilize bloop to be installed in this enclosure interior and reach the noise reduction purpose, and the shape of bloop and structure are all identical, make not only that assembly is more or less freely, the part kind is few, and bloop is difficult for deterioration, can increase the service life.

Description of drawings

Fig. 1 is existing a kind of air tool silencing means combination generalized section;

Fig. 2 is the scheme of installation of one embodiment of the invention;

Fig. 3 is the three-dimensional exploded view of the above-mentioned preferred embodiment of the present invention;

Fig. 4 is the cross-sectional schematic of being got along the straight line IV-IV among Fig. 2;

Fig. 5 is the cross-sectional schematic of being got along the straight line V-V among Fig. 2;

Fig. 6 is the local enlarged diagram of Fig. 2.

The specific embodiment

The present invention is described in detail below in conjunction with drawings and Examples:

As shown in Figures 2 and 3, the air tool silencing means preferred embodiment of the present invention, this pneumatic tool also includes a body 100 and a top cover 110 that is installed on this body 100, and this top cover 110 has a depressed part that is arranged with by end face 120, one and is arranged on the steam vent 140 that screw 130 in this depressed part 120 and most rings are located at these screw 130 outsides.This silencing means is that corresponding described steam vent 140 is installed on this top cover 110, and comprises first bloop 20 that a housing 10, one be installed in these housing 10 inside, one and stack second bloop 30 on this first bloop 20, one and stack capping 50, one that the 3rd bloop 40 on this second bloop 30, envelope be located at the 3rd bloop 40 outsides these capping 50 lockings are positioned at the damping piece 70 that locked assembly 60 on this top cover 110 and are located at 20 of this top cover 110 and this first bloops.

This housing 10 is to be hollow tube-shape and to be set in the depressed part 120 of this top cover 110, and has one and level off to this top cover 110 and the baffle ring 13 that is protruded out towards this endoporus 11 by this perisporium 12, a pair of first interlocking portion 14 that is arranged on this perisporium 12 and extends vertically and a pair of and this first interlocking portion 14 along the second interlocking portion 15 that hoop is provided with at interval around an axis L and the perisporium 12, that define an endoporus 11.This perisporium 12 has an inner ring surface 121 adjacent to this endoporus 11, and described first and second interlocking portion the 14, the 15th is arranged with by this inner ring surface 121 and is the groove shape.

This first bloop 20 is mounted in the endoporus 11 of this housing 10, and support only to be positioned on this baffle ring 13, and the pars intermedia that is provided with of respective axes L of tool 21, ring are located at the ring perimembranous 22 of these pars intermedia 21 outsides and one flat part 23 between 22 of this pars intermedia 21 and this ring perimembranous.This pars intermedia 21 has an axis hole 211 that is provided with along axis L, this ring perimembranous 22 have one to outer peripheral face 221 that should inner ring surface 121 and a pair of establish protruding in this outer peripheral face 221 and be the fastening part 222 of projection shape, described fastening part 222 is nested against one another with the first interlocking portion 14 of this housing 10, this flat part 23 has most first bloops 231 that axially are provided with along this housing 10, described first bloop 231 is polygon (present embodiment is for being honey comb like hexagon), and this pars intermedia 21 and ring perimembranous 22 respective shaft to thickness greater than this flat part 23, that is to say the top end face of this flat part 23 and this pars intermedia 21, the top end face of ring perimembranous 22 all has difference in height.

This second bloop 30 is that this first bloop 20 that continues is installed in the endoporus 11 of this housing 10, and the pars intermedia that is provided with of respective axes L of tool 31, ring are located at the ring perimembranous 32 of these pars intermedia 31 outsides and one flat part 33 between 32 of this pars intermedia 31 and this ring perimembranous.This pars intermedia 31 has an axis hole 311 that is provided with along axis L, this ring perimembranous 32 have one to outer peripheral face 321 that should inner ring surface 121 and a pair of establish protruding in this outer peripheral face 321 and be the fastening part 322 of projection shape, described fastening part 322 is nested against one another with the second interlocking portion 15 of this housing 10, this flat part 33 has most second bloops 331 that axially are provided with along this housing 10, described second bloop 331 is honey comb like hexagon, and be to stagger with this first bloop 231 (see figure 4) is set, this pars intermedia 31 and ring perimembranous 32 respective shaft to thickness greater than this flat part 33, and make this first, two

bloops

20,30 flat part 23,33 produce one first space 81 (see figure 6)s.

The 3rd bloop 40 is that this second bloop 30 that continues is installed in the endoporus 11 of this housing 10, and the pars intermedia that is provided with of respective axes L of tool 41, ring are located at the ring perimembranous 42 of these pars intermedia 41 outsides and one flat part 43 between 42 of this pars intermedia 41 and this ring perimembranous.This pars intermedia 41 has an axis hole 411 that is provided with along axis L, this ring perimembranous 42 have one to outer peripheral face 421 that should inner ring surface 121 and a pair of establish protruding in this outer peripheral face 421 and be the fastening part 422 of projection shape, described fastening part 422 is nested against one another with the first interlocking portion 14 of this housing 10, this flat part 43 has most the 3rd bloops 431 that axially are provided with along this housing 10, described the 3rd bloop 431 also is honey comb like hexagon, and be to stagger with this second bloop 331 (see figure 5) is set, this pars intermedia 41 and ring perimembranous 42 respective shaft to thickness greater than this flat part 43, and make this second, three

bloops

30,40

flat part

33,43 produce one second space 82 (see figure 6)s.

This capping 50 be continue that the 3rd bloop 40 is set in the endoporus 11 of this housing 10 and with these baffle ring 13 opposite settings, and have an outlet that connects with this endoporus 11 51, one outer ring surface 52 that should inner ring surface 121, two pairs are convexly set in this outer ring surface 52 and be the fixture block 53 of projection shape and one to fixing hole 54 that should housing 10 axis L, the direction of this outlet 51 be to should housing 10 radially, described fixture block 53 is nested against one another with first and second interlocking

portion

14,15 of this housing 10.And make 43 of the flat parts of these capping 50 bottom surfaces and the 3rd bloop 40 produce one the 3rd space 83 (see figure 6)s.

This locked assembly 60 is fixing hole 54, the axis holes 411,311,211 that pass this capping 50 in regular turn, and last screw lock impels this first, second and

third bloop

20,30,40 and capping 50 to be fixed in this housing 10 in the screw 130 of this top cover 110.

This damping piece 70 is to make loop shaped, and is set between the pars intermedia 21 and this top cover 110 end faces of this first bloop 20, and provides this first bloop 20 to produce the location with respect to this top cover 110.

Again as shown in Figure 6, when the whole assembly of this silencing means is finished, and utilize 60 groups of this locked assemblies to be located on this top cover 110, when the gases at high pressure of pneumatic tool inside enter this silencing means, can pass described first bloop 231 earlier, enter in this first space 81 immediately and produce expansion, gas enters the 82 generation expansions of second space again after can passing second bloop 331 again, and enter the 83 generation expansions of the 3rd space again after can passing the 3rd bloop 431 again, then discharge at last by this outlet 51, therefore, gases at high pressure will consume energy through repeatedly expanding, make the speed and the pressure of gases at high pressure significantly reduce, in the hope of reducing volume.And when gas when passing first, second and third bloop 231,331,431, sound wave can be absorbed by first, second and third bloop 231,331,431, some then can be reflected by first, second and third bloop 231,331,431, at this moment, utilization waits first and second, three bloops 231,331,431 are honey comb like effect, the sound wave energy that reflects runs foul of each other, and part also can be cancelled out each other, to reach the purpose of noise reduction.

What deserves to be mentioned is, when rotating this housing 10, utilize first and second interlocking

portion

14,15 effect nested against one another of fixture block 53 and this housing 10, can this capping 50 of interlock also rotate together, can adjust outlet 51 directions of this capping 50, and utilize the direction that is arranged so that this outlet 51 of this damping piece 70 can not change easily after adjusting.

And silencing means of the present invention also has following advantages:

One, described first, second and

third bloop

20,30,40 shape, structure and size are all identical, Just utilize fastening part 222,322,422 to rabbet with first scarfing unit 14 or second of this housing 10 respectively Section 15 is nested against one another, so that first, second and third bloop 231,331,431 staggers mutually, makes and brings about the desired sensation The road is circuitous, and not only erasure effect is good, and first, second and

third bloop

20,30,40 is for having identical knot The part of structure and size, make and assembly on quite convenient, and one-piece parts kind, number are few, material Also all comparatively easy in management and the assembly.

Two, described first, second and

third bloop

20,30, even 40 long-time use also not can deterioration failure, Do not need to change.

Claims

1. air tool silencing means, this pneumatic tool also includes a body and a top cover that is installed on this body, this top cover has most steam vents, this silencing means is that corresponding described steam vent is installed on this top cover, and comprises a housing and at least two bloops that are installed in this enclosure interior; This silencing means is characterised in that:

This housing is to be hollow tube-shape, and has a perisporium that centers on an axis and define an endoporus;

Described bloop is mounted in the endoporus of this housing, and respectively has most along the bloop of this housing shaft to setting, and is the setting of staggering along this housing shaft to the bloop of adjacent two bloops repeatedly putting.

2. air tool silencing means as claimed in claim 1, it is characterized in that: the perisporium of this housing has an inner ring surface adjacent to this endoporus, this housing also has a baffle ring that levels off to this top cover and protruded out towards this endoporus by this inner ring surface, and this baffle ring supports the fastening position for described bloop.

3. air tool silencing means as claimed in claim 2, it is characterized in that: also have is provided with and envelope be located at the capping in the described bloop outside and this capping and bloop locking be positioned at locked assembly this top cover on opposite with this baffle ring, this capping has an outlet with this endoporus perforation.

4. air tool silencing means as claimed in claim 3 is characterized in that: the Way out of this capping be to should housing radially.

5. air tool silencing means as claimed in claim 1, it is characterized in that: this housing also has most the interlocking portions that are disposed on this perisporium and extend vertically along hoop, described bloop respectively has at least one and is located at an outer peripheral face and the fastening part nested against one another with the interlocking portion of this housing, along this housing shaft in the fastening part of adjacent two bloops repeatedly putting is embedded interlocking portion at diverse location.

6. air tool silencing means as claimed in claim 5 is characterized in that: the interlocking portion of this housing is arranged with by this inner ring surface to be the groove shape, and the fastening part of described bloop is to be convexly equipped with by this outer peripheral face to be the projection shape.

7. air tool silencing means as claimed in claim 1, it is characterized in that: described bloop also respectively has ring perimembranous and flat part between between this pars intermedia and this ring perimembranous that the pars intermedia of a respective axes setting, a ring are located at this pars intermedia outside, this pars intermedia and ring perimembranous respective shaft to thickness greater than this flat part, and this ring perimembranous is provided with this outer peripheral face, this flat part is provided with bloop, produces a space along this housing shaft between the flat part of adjacent two bloops repeatedly putting.

8. air tool silencing means as claimed in claim 1 is characterized in that: the bloop of described bloop is polygon.

9. air tool silencing means as claimed in claim 1 is characterized in that: also have a damping piece of being located between this top cover and one of them bloop.