阅读说明：本技术 一种便于排渣的射钉器 (Nail shooting device convenient for slag discharge ) 是由 谢六六 于 2021-07-26 设计创作，主要内容包括：本申请公开了一种便于排渣的射钉器,包括本体、通过弹簧相对本体上下滑动的连接套、相对固定在连接套上端部的消音器、转动设置在消音器上端的防尘螺母以及设置在消音器上部沿周向向外倾斜开设的消音孔,所述消音器中部沿周向设置有承力面,其特征在于,位于防尘螺母和连接套之间且围绕消音器设置有消音套,所述消音套包括消音内圈和消音外圈,所述消音内圈上部内径小于下部内径,所述消音内圈中卡设有消音套弹簧,所述消音套弹簧下端被承力面顶住,所述消音内圈上部内径大于消音器的外圈外径,所述消音内圈和消音器之间形成消音出渣腔。本发明提供了一种使用寿命长且操作方便的便于排渣的射钉器。(The application discloses ail shooter convenient to arrange sediment, including the body, through the relative body of spring about gliding adapter sleeve, relatively fix the muffler of upper end at the adapter sleeve, rotate dustproof nut and the setting of setting on the muffler upper end along the bloop that circumference leaned out and offered on muffler upper portion, the muffler middle part is provided with the load face along circumference, its characterized in that is located between dustproof nut and the adapter sleeve and is provided with the amortization cover around the muffler, the amortization cover includes amortization inner circle and amortization outer lane, amortization inner circle upper portion internal diameter is less than the lower part internal diameter, the amortization inner circle inside callipers is equipped with the amortization cover spring, amortization cover spring lower extreme is withstood by the load face, amortization inner circle upper portion internal diameter is greater than the outer lane external diameter of muffler, form the amortization chamber of slagging tap between amortization inner circle and the muffler. The invention provides the nail shooter which has long service life and convenient operation and is convenient for slag discharge.)

1. The utility model provides a ail shooter convenient to arrange sediment, includes body (100), through spring (18) relative body (100) sliding adapter sleeve (9) from top to bottom, relatively fix muffler (1) at adapter sleeve (9) upper end, rotate dust nut (15) of setting in muffler (1) upper end and set up on muffler (1) upper portion along circumference towards the bloop (2) of seting up that inclines out, muffler (1) middle part is provided with bearing surface (8) along circumference, its characterized in that, be located between dust nut (15) and adapter sleeve (9) and be provided with amortization cover (5) around muffler (1), amortization cover (5) include amortization inner circle (51) and amortization outer lane (52), amortization inner circle (51) upper portion internal diameter is less than the lower part internal diameter, amortization inner circle (51) centre gripping is equipped with amortization cover spring (7), amortization cover spring (7) lower extreme is withstood by bearing surface (8), the inner diameter of the upper part of the silencing inner ring (51) is larger than the outer diameter of the outer ring of the silencer (1), and a silencing slag discharging cavity (4) is formed between the silencing inner ring (51) and the silencer (1).

2. The nailing device for facilitating slag discharge according to claim 1, wherein the material of the noise-reduction inner ring (51) is stainless steel.

3. The nail shooter convenient for deslagging as recited in claim 1, characterized in that the lower inner diameter of the sound attenuation outer ring (52) is larger than the outer diameters of the bearing surface (8) and the connecting sleeve (9).

4. The nail shooter for facilitating slag discharge according to any one of claims 1 to 3, further comprising: the inner diameter of the lower part of the silencing inner ring (51) is equal to the outer diameters of the bearing surface (8) and the connecting sleeve (9).

5. The nail shooter convenient for slag discharge according to claim 4, characterized in that the noise reduction outer ring (52) comprises an upper elliptical ring (521) which is arranged around the upper part of the noise reduction inner ring (51) in a ring column shape and a lower elliptical ring (522) which is connected to the lower end of the upper elliptical ring (521) and has an elliptical cross section, and a plurality of noise reduction pore plates which divide the interior of the lower elliptical ring (522) into a plurality of noise reduction cavities are arranged in the lower elliptical ring (522).

6. The nailing device for facilitating slag discharge according to claim 5, wherein the plurality of silencing hole plates comprise two first silencing hole plates (5221) arranged in the lower elliptical circle (522) in a left-right parallel symmetry along the minor axis of the elliptical cross-section and two second silencing hole plates (5222) arranged in the lower elliptical circle (522) in a left-right parallel symmetry along the minor axis of the elliptical cross-section and located at the sides of the first silencing hole plates (5221) far from each other, respectively, a plurality of partition plates (5223) not parallel to the second silencing hole plates (5222) or the first silencing hole plates (5221) are arranged between each second silencing hole plate (5222) and the first silencing hole plate (5221) adjacent thereto, and the plurality of partition plates (5223) are spaced apart in the height direction.

7. A nail shooter facilitating slag discharge according to claim 6, characterized in that the average pore diameter of all the pores of the first soundproofing orifice plate (5221) is equal to or larger than the average pore diameter of all the pores of the second soundproofing orifice plate (5222), the perforation rate of the soundproofing orifice plate is set between one percent and two percent, and the pore diameter of each pore of the soundproofing orifice plate is smaller than one millimeter.

8. The nail shooter convenient for slag discharge according to claim 7, characterized in that a plurality of silencing inner hole plates for dividing the interior of the upper elliptical circle (521) into a plurality of silencing inner cavities are arranged in the upper elliptical circle (521).

9. The nailing device convenient for slag discharge according to claim 8, wherein the plurality of sound-deadening inner hole plates comprise a first sound-deadening ring hole plate (5211) arranged in the upper elliptical circle (521) and surrounding the upper part of the sound-deadening inner ring (51), and a second sound-deadening ring hole plate (5212) arranged in the upper elliptical circle (521) and located on one side of the first sound-deadening ring hole plate (5211) away from the sound-deadening inner ring (51), wherein a plurality of first partition plates (5213) which are not parallel to the second sound-deadening ring hole plate (5212) or the first sound-deadening ring hole plate (5211) and second partition plates (5214) connected between two ends of two vertically adjacent first partition plates (5213) are arranged between the second sound-deadening ring hole plate (5212) and the first sound-deadening ring hole plate (5211), and the plurality of first partition plates (5213) are distributed at intervals in the height direction.

10. The nailing device for facilitating slag discharge according to claim 9, wherein the average pore diameter of all pores of the first silencing annular pore plate (5211) is equal to or larger than the average pore diameter of all pores of the second silencing annular pore plate (5212), the perforation rate of the silencing inner pore plate is set between one percent and two percent, and the pore diameter of each inner pore of the silencing inner pore plate is less than one millimeter.

Technical Field

The invention relates to the technical field of nail shooting devices, in particular to a nail shooting device convenient for slag discharge.

Background

With the development of the nail shooter technology, the nail shooter has various advantages, so that the application of the nail shooter has wider and wider space. For example, the Chinese patent with patent number 2018216802114 discloses an automatic slag-discharging heat-dissipating axial nail shooter, which comprises a nail tube 1, an upper silencing hole 2 of the nail tube 1, a silencing cover 3 arranged outside the nail tube 1, and a silencing space 4 formed by the nail tube 1 and the inner wall of the silencing cover 3; a sliding sleeve 5 is arranged outside the silencing cover 3, and a deslagging heat dissipation hole 6 is arranged on the silencing cover 3; the sliding sleeve can move axially. The invention is provided with the slag-discharging heat-radiating holes, so that a slag-discharging channel and a heat-radiating channel are formed between the silencing space and the environment; seal the row's sediment hole when the sliding sleeve that installs additional to guarantee normal percussion action, move behind the sliding sleeve when moving back the shell and make row's sediment louvre expose, the residue piece just can fall out outside the equipment, and the heat also gives out simultaneously. More importantly, the temperature of the part can be effectively reduced, and serious potential safety hazards are avoided. The actions of deslagging and heat dissipation are carried out along with the shell withdrawing action, no extra redundant action is added, and the simplicity of operation is facilitated.

Although the sliding sleeve moves backward when moving back the shell and makes the sediment louvre expose, the residue piece just can fall out outside the equipment, but its residue piece still has some can be detained by the amortization cover, can adhere to in sediment louvre department to along with the increase of penetrating the nail number of times, lead to subsequent piece can silt up in amortization space, still need dismantle the washing, the short operation of life is inconvenient.

Disclosure of Invention

The present invention is directed to solving one of the technical problems of the prior art.

The application provides a ail shooter convenient to arrange sediment, including the body, through the relative body of spring about gliding adapter sleeve, relatively fix the muffler of upper end at the adapter sleeve, rotate dustproof nut and the setting of setting on the muffler upper end along the bloop that circumference leaned out and offered on muffler upper portion, the muffler middle part is provided with the load face along circumference, its characterized in that is located between dustproof nut and the adapter sleeve and is provided with the amortization cover around the muffler, the amortization cover includes amortization inner circle and amortization outer lane, amortization inner circle upper portion internal diameter is less than the lower part internal diameter, the amortization inner circle inside callipers is equipped with the amortization cover spring, amortization cover spring lower extreme is withstood by the load face, amortization inner circle upper portion internal diameter is greater than the outer lane external diameter of muffler, form the amortization chamber of slagging tap between amortization inner circle and the muffler.

By adopting the nail shooter convenient for deslagging, on the premise of not changing the working mode and effect of the original equipment, a silencing sleeve is arranged between the dustproof nut and the connecting sleeve and around the silencer, the silencing sleeve comprises a silencing inner ring and a silencing outer ring, wherein the silencing inner ring is used for clamping a silencing sleeve spring, and meanwhile, a silencing deslagging cavity is formed between the silencing inner ring and the silencer, in the percussion process, residue scraps fall into the silencing deslagging cavity and move backwards along with the silencing sleeve, so that when the silencing sleeve moves backwards to the limit, a gap is formed between the top of the silencing sleeve and the dustproof nut, the residue scraps in the silencing deslagging cavity can fall out, compared with the prior art, the phenomenon that part of the residue scraps can be blocked by the silencing sleeve is avoided, the phenomenon that the residue scraps are attached to the deslagging radiating hole to influence continuous nail shooting is reduced, and the number of times that the nail shooter can be used at a single time is greatly improved, the nail shooting device has the advantages that the nail shooting device can be detached and cleaned after one time of continuous nail shooting for two or more ten thousand times, the service life and the operation time are greatly prolonged, and the nail shooting device is long in service life, convenient to operate and convenient for slag discharging.

Preferably: the material of amortization inner circle is stainless steel.

Preferably: the inner diameter of the lower part of the silencing outer ring is larger than the outer diameters of the bearing surface and the connecting sleeve.

Preferably: the inner diameter of the lower part of the silencing inner ring is equal to the outer diameters of the bearing surface and the connecting sleeve.

Preferably: the silencing outer ring comprises an upper elliptical ring which is arranged around the upper part of the silencing inner ring in a ring column shape and a lower elliptical ring which is connected to the lower end of the upper elliptical ring and has an elliptical section, and a plurality of silencing pore plates which divide the lower elliptical ring into a plurality of silencing cavities are arranged in the lower elliptical ring.

Preferably: the plurality of silencing hole plates comprise two first silencing hole plates which are symmetrically arranged in the lower elliptical circle in a left-right parallel mode along the short axis of the elliptical section and two second silencing hole plates which are symmetrically arranged in the lower elliptical circle in the left-right parallel mode along the short axis of the elliptical section and are respectively positioned at one side, far away from the first silencing hole plate, of the first silencing hole plate, a plurality of partition plates which are not parallel to the second silencing hole plates or the first silencing hole plates are arranged between each second silencing hole plate and the first silencing hole plate adjacent to the second silencing hole plate, and the partition plates are distributed at intervals in the height direction.

Preferably: the average pore diameter of all the pores on the first silencing pore plate is larger than or equal to the average pore diameter of all the pores on the second silencing pore plate, the perforation rate of the silencing pore plate is set between one percent and two percent, and the pore diameter of each pore on the silencing pore plate is smaller than one millimeter.

Preferably: a plurality of silencing inner pore plates which divide the upper elliptical ring into a plurality of silencing inner cavities are arranged in the upper elliptical ring.

Preferably: a plurality of amortization hole boards are including setting up around the first amortization annular ring board on amortization inner circle upper portion in last oval circle and setting up and lie in the second amortization annular ring board that first amortization annular ring board kept away from amortization inner circle one side in last oval circle, be equipped with a plurality of non-parallels second amortization annular ring board or the first division board of first amortization annular ring board and lie in the second division board of connecting between two adjacent first division board both ends from top to bottom between second amortization annular ring board and the first amortization annular ring board, this a plurality of first division boards are along direction of height interval distribution.

Preferably: the average pore diameter of all the pores on the first silencing annular pore plate is larger than or equal to the average pore diameter of all the pores on the second silencing annular pore plate, the perforation rate of the silencing inner pore plate is set between one percent and two percent, and the pore diameter of each inner pore on the silencing inner pore plate is smaller than one millimeter.

The advantageous effects of the present invention will be explained in detail in the embodiments, thereby making the advantageous effects more apparent.

Drawings

Fig. 1 is a schematic diagram of a partial explosion structure in the embodiment of the present application.

Fig. 2 is an exploded view of the body in the embodiment of the present application.

Fig. 3 is a schematic cross-sectional view of the upper half of the embodiment of the present application.

Fig. 4 is a schematic bottom view of the outer ring of the silencer in the embodiment of the present application.

FIG. 5 is a schematic cross-sectional view of the noise reduction outer ring according to the embodiment of the present application.

FIG. 6 is a schematic top view of the noise reduction outer ring in the embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.

The terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and the terms "first", "second", and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, and the character "/", generally means that the objects related to each other before and after are in a relationship of "or".

The server provided by the embodiment of the present application is described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

Example 1:

as shown in fig. 1-3, the present application provides a nail shooter convenient for slag discharge, which comprises a body 100, wherein the body 100 is of a conventional structure, which is disclosed in chinese patent No. 2018216802114, and comprises a needle striking sleeve 17, a needle 16, a needle striking base 36, a connecting sleeve 9, a spring 18, a shaft sleeve 35, a protective sleeve 34, an exciting spring 33, a spring base 32 and a connecting handle 31, the connecting sleeve 9 slides up and down relative to the body 100 through the spring 18, a silencer 1 is relatively fixed at the upper end of the connecting sleeve 9, a dust nut 15 is rotatably disposed at the upper end of the silencer 1, a silencing hole 2 is disposed at the upper portion of the silencer 1 and is inclined outwards in the circumferential direction, a bearing surface 8 is disposed at the middle portion of the silencer 1 in the circumferential direction, and in the present embodiment, unlike the prior art, a silencing sleeve 5 is disposed between the dust nut 15 and the connecting sleeve 9 and around the silencer 1, the silencing sleeve 5 comprises a silencing inner ring 51 and a silencing outer ring 52, the inner diameter of the upper part of the silencing inner ring 51 is smaller than the inner diameter of the lower part, a silencing sleeve spring 7 is clamped in the silencing inner ring 51, the lower end of the silencing sleeve spring 7 is supported by a bearing surface 8, the inner diameter of the upper part of the silencing inner ring 51 is larger than the outer diameter of the outer ring of the silencer 1, and a silencing slag discharging cavity 4 is formed between the silencing inner ring 51 and the silencer 1.

By adopting the nail shooter convenient for deslagging, on the premise of not changing the working mode and effect of the original equipment, the silencing sleeve 5 is arranged between the dustproof nut 15 and the connecting sleeve 9 and around the silencer 1, the silencing sleeve 5 comprises the silencing inner ring 51 and the silencing outer ring 52, wherein the silencing inner ring 51 is used for clamping the silencing sleeve spring 7, meanwhile, a silencing slag discharging cavity 4 is formed between the silencing inner ring 51 and the silencer 1, in the percussion process, residue scraps fall into the silencing slag discharging cavity 4 and move backwards along with the silencing sleeve 5, when the silencing sleeve 5 moves backwards to the limit, a gap is formed between the top of the silencing sleeve 5 and the dustproof nut 15, so that the residue scraps in the silencing slag discharging cavity 4 fall out, compared with the prior art, the phenomenon that part of the residue scraps are blocked by the silencing sleeve is avoided, and the phenomenon that the residue scraps appear at the deslagging heat discharging hole is reduced, so that the continuous nail shooting is influenced, greatly improves the times that the nail shooter can be used by a single time, and can be disassembled and cleaned after two ten thousand times of the single sustainable nail shooting, the service life and the operation time are greatly prolonged, when in a percussion state, a silencing slag discharging cavity 4 is arranged between a silencing sleeve 5 and a silencer 1, the silencing slag discharging cavity 4 plays the roles of silencing and storing slag when in percussion, the normal silencing effect is ensured, and the normal percussion power is not influenced, the slag discharging and heat dissipating holes in the prior art can block or cause the phenomenon of slag adhesion along with the continuous percussion to influence the percussion power, after the percussion is finished, the silencing sleeve 5 is held by hand to pull downwards, the silencing sleeve 5 moves downwards and presses a silencing sleeve spring 7, at the moment, a connecting sleeve 9 slides downwards to a limit position to stop, the silencing sleeve 5 continuously downwards to separate a gap between the top of the silencing sleeve 5 and a dustproof nut 15, and the slag in the silencing slag discharging cavity 4 can fall out, at the moment, the residue scraps are in a hot state and can conveniently fall out, and the heat dissipation of the interior of the silencing and deslagging cavity 4 is also facilitated; when the silencing sleeve 5 slides down to the extreme position, the bottom of the silencing inner ring 51 of the silencing sleeve is abutted against the bearing surface 8, so that the silencer 1, the silencing sleeve 5, the connecting sleeve 9 and the dustproof nut 15 integrally move backwards, the firing pin sleeve 17 moves forwards relatively, the residue and debris in the silencer 1 are ejected out by the upper end surface of the firing pin sleeve, the shell withdrawing action is completed, and the optimal structure of the silencing hole 2 is that one end of the silencing hole, which is close to the silencer 1, is upwardly deviated towards the other end, so that the inclination is formed, and the shell withdrawing is more convenient; after the shell is removed, the spring 18 enables the silencer 1, the connecting sleeve 9 and the dustproof nut 15 to be reset integrally, the silencing sleeve spring 7 enables the silencing sleeve 5 to be reset, and the whole machine is restored to a natural state.

In the embodiment of the present invention, the material of the sound-deadening inner ring 51 is stainless steel.

By adopting the technical scheme, the silencing inner ring 51 is in charge of being matched with the silencing sleeve spring 7 in the silencing inner ring, certain strength is required, and the service life is greatly prolonged by adopting stainless steel materials.

In the specific embodiment of the invention, the inner diameter of the lower part of the sound attenuation outer ring 52 is larger than the outer diameters of the bearing surface 8 and the connecting sleeve 9.

By adopting the technical scheme, the design of the structure does not prevent the silencing outer ring 52 from sliding downwards when in use, and the bearing surface 8 and the upper part of the connecting sleeve 9 enter the silencing outer ring 52.

In the specific embodiment of the invention, the inner diameter of the lower part of the silencing inner ring 51 is equal to the outer diameters of the bearing surface 8 and the connecting sleeve 9.

By adopting the technical scheme, the lower end of the silencing inner ring 51 is in contact with the upper surface of the bearing surface 8 to form sealing in the shell withdrawing process, so that residue chips in the silencing slag discharging cavity 4 are uniformly discharged from a gap at the top, and the functions of limiting and forming blocking by matching with the silencing inner ring 51 are achieved.

Example 2

As shown in fig. 4-6, the difference from embodiment 1 is that, in the embodiment of the present invention, the silencing outer ring 52 includes an upper elliptical ring 521 disposed around the upper portion of the silencing inner ring 51 in a ring column shape and a lower elliptical ring 522 connected to the lower end of the upper elliptical ring 521 and having an elliptical cross section, and a plurality of silencing orifice plates are disposed in the lower elliptical ring 522 and divide the interior of the lower elliptical ring 522 into a plurality of silencing cavities.

By adopting the technical scheme, the lower elliptical ring 522 can be divided into a plurality of silencing cavities, so that the overall silencing effect of the silencing outer ring 52 can be effectively improved, and the specific principle can be understood from the following analysis.

In the embodiment of the present invention, the plurality of muffling hole plates include two first muffling hole plates 5221 which are symmetrically arranged in the lower elliptical ring 522 in a left-right parallel manner along the short axis of the elliptical cross-section, and two second muffling hole plates 5222 which are symmetrically arranged in the lower elliptical ring 522 in a left-right parallel manner along the short axis of the elliptical cross-section and are respectively located at sides of the first muffling hole plates 5221 which are far away from each other.

That is, each second muffling hole plate 5222 is disposed in parallel to the first muffling hole plate 5221, and the two second muffling hole plates 5222 are disposed on the sides of the two first muffling hole plates 5221, respectively, that is, one second muffling hole plate 5222 is disposed on the side of each first muffling hole plate 5221, which is away from the central axis of the lower elliptical ring 522, respectively, and the second muffling hole plate 5222 is disposed in parallel to the first muffling hole plate 5221, thereby facilitating the installation, and further, by disposing the first muffling hole plate 5221 and the second muffling hole plate 5222 in the lower elliptical ring 522, the lower elliptical ring 522 can be divided into a structure including a plurality of layers of muffling chambers, so that the overall muffling effect can be effectively improved, and the specific principle can be understood from the following analysis;

at this time, a main muffling cavity 5220 is defined between the two first muffling hole plates 5221, a first sub-muffling cavity 52201 can be defined between each first muffling hole plate 5221 and the second muffling hole plate 5222 on the outer side thereof, and a second sub-muffling cavity 52202 can be defined between each second muffling hole plate 5222 and the inner wall of the lower elliptical ring 522, so that the cavity depth (i.e., the direction of the transverse section/the direction perpendicular to the central axis of the lower elliptical ring 522) of the second sub-muffling cavity 52202 is changed and is not a fixed value due to the elliptical cross section of the lower elliptical ring 522, and thus a wider muffling frequency range can be obtained, the muffling effect is better, and the specific principle can be obtained from the following analysis. Of course, the cross section of the lower elliptical ring 522 may be replaced by other shapes, such as a triangle and an irregular shape, as long as the cavity depth of the second sub sound-deadening cavity 52202 varies along the transverse direction of the cross section or the direction perpendicular to the central axis of the lower elliptical ring 522, that is, is not a fixed value, so that a wider sound-deadening frequency range can be obtained, and the sound-deadening effect is better.

In the embodiment of the present invention, the average pore diameter of all the pores of the first muffling hole plate 5221 is greater than or equal to the average pore diameter of all the pores of the second muffling hole plate 5222, so that more air flows can enter the first sub-muffling cavity 52201, and further muffling of the second muffling hole plate 5222 is achieved, so that the muffling hole plate 5222 can be more fully utilized, and the overall muffling effect is improved; a plurality of partition plates 5223 which are not parallel to the second muffling hole plate 5222 or the first muffling hole plate 5221 are disposed between each second muffling hole plate 5222 and the adjacent first muffling hole plate 5221, the plurality of partition plates 5223 are spaced apart in the height direction, for example, the partition plates 5223 can be arranged perpendicular or substantially perpendicular to the central axis of the lower elliptical ring 522, so that the partition plates 5223 can divide the first sub-muffling chamber 52201 into a plurality of small muffling chambers, so that the airflow can be turned back and hit more times to achieve a better muffling effect, the partition plates 5223 are solid plates, and the airflow cannot pass through the partition plates 5223, and it should be noted that the number, shape and distribution direction of the partition plates 5223 in this embodiment are not limited; the specific structure of the silencing orifice plate is not limited as long as the silencing orifice plate has a silencing function, the aperture of all the orifices on the silencing orifice plate can be equal or partially equal or not equal, the distance between adjacent orifices can be equal or not equal, the perforation rate of the silencing orifice plate is set between one percent and two percent, and the aperture of each orifice on the silencing orifice plate is smaller than one millimeter, so that a better silencing effect can be achieved.

As shown in fig. 4, in the cross section of the lower elliptical circle 522, the distance from the first muffling hole plate 5221 to the second muffling hole plate 5222 is defined as the cavity depth H1 of the first sub-muffling cavity 52201, and the dimension along the width direction of the first muffling hole plate 5221 is defined as the cavity width W1 of the first sub-muffling cavity 52201, whereby the cavity depths H1 at the middle of the cavity width of the first sub-muffling cavity 52201 are the same value, and the corresponding cavity depths H1 at the two sides of the cavity width of the first sub-muffling cavity 52201 are gradually reduced in the direction away from the center point of the cavity width; the distance between the second muffling hole plate 5222 and the inner wall of the lower elliptical ring 522 is defined as the cavity depth H2 of the second sub-muffling cavity 52202, the dimension in the width direction of the second muffling hole plate 5222 is defined as the cavity width W2 of the second sub-muffling cavity 52202, and the cavity depths H2 of the second sub-muffling cavity 52202 corresponding to each position in the direction from the cavity width center point to the cavity width end points are gradually reduced; the distance H2 between the holes of the second muffling hole plate 5222 distributed along the width direction thereof and the inner wall of the lower elliptical ring 522 is not the same value but a plurality of values that vary within a certain range, and according to the helmholtz resonance cavity principle, the resonance frequency of the sound absorbing structure of the muffling hole plate is:

the hole diameter of the holes is shown, and B represents the pitch of the holes. From this, it can be seen that by providing the second sub sound-deadening chamber 52202 as the cavity depth structure, the entire sound-deadening frequency range can be made wider.

Example 3

As shown in fig. 6, in the embodiment of the present invention, a plurality of silencing inner hole plates are disposed inside the upper elliptical ring 521, and divide the inside of the upper elliptical ring 521 into a plurality of silencing inner cavities.

By adopting the technical scheme, the structure of the upper elliptical ring 521 divided into the plurality of silencing inner cavities can be realized, so that the overall silencing effect of the silencing outer ring 52 can be effectively improved, and the specific principle can be understood from the following analysis.

In the embodiment of the present invention, the plurality of silencing inner hole plates include a first silencing annular hole plate 5211 disposed inside the upper elliptical ring 521 and surrounding the upper portion of the silencing inner ring 51, and a second silencing annular hole plate 5212 disposed inside the upper elliptical ring 521 and located on a side of the first silencing annular hole plate 5211 away from the silencing inner ring 51.

The plurality of silencing inner hole plates comprise a first silencing annular hole plate 5211 which is arranged in the upper elliptical ring 521 and surrounds the upper part of the silencing inner ring 51 and a second silencing annular hole plate 5212 which is arranged in the upper elliptical ring 521 and is positioned on one side of the first silencing annular hole plate 5211, which is far away from the silencing inner ring 51, so that the installation is convenient, and the upper elliptical ring 521 can be divided into a structure comprising a plurality of layers of silencing inner cavities by arranging the first silencing annular hole plate 5211 and the second silencing annular hole plate 5212, so that the integral silencing effect can be effectively improved, and the specific principle can be understood from later analysis;

a main silencing inner cavity is defined between the first silencing annular plate 5211, a first sub silencing inner cavity can be defined between the first silencing annular plate 5211 and the second silencing annular plate 5212 on the outer side of the first silencing annular plate 5211, and a second sub silencing inner cavity can be defined between the second silencing annular plate 5212 and the inner wall of the upper elliptical ring 521, so that the cross section of the upper elliptical ring 521 is elliptical, so that the cavity depth (namely the direction of the transverse/vertical to the central axis of the upper elliptical ring 521) of the second sub silencing inner cavity is changed and is not a fixed value, a wider silencing frequency range can be obtained, the silencing effect is better, and the specific principle can be obtained from later analysis. Of course, the cross section of the upper elliptical ring 521 can be replaced by other shapes, such as a triangle and an irregular shape, as long as the cavity depth of the second sub-sound-deadening inner cavity is changed along the transverse direction of the cross section or the direction perpendicular to the central axis of the upper elliptical ring 521, that is, the cavity depth is not a fixed value, so that a wider sound-deadening frequency range can be obtained, and the sound-deadening effect is better.

In the specific embodiment of the present invention, the average pore diameter of all the pores on the first silencing annular pore plate 5211 is greater than or equal to the average pore diameter of all the pores on the second silencing annular pore plate 5212, so that more gas flows can enter the first sub-silencing inner cavity, further silencing by the second silencing annular pore plate 5212 is obtained, and the overall silencing effect is improved; the perforation rate of the silencing inner orifice plate is set between one percent and two percent, and the aperture of each inner hole on the silencing inner orifice plate is smaller than one millimeter.

A plurality of first separating plates 5213 which are not parallel to the second silencing annular hole plate 5212 or the first silencing annular hole plate 5211 and a plurality of second separating plates 5214 which are connected between two ends of two vertically adjacent first separating plates 5213 are arranged between the second silencing annular hole plate 5212 and the first silencing annular hole plate 5211, and the plurality of first separating plates 5213 are distributed at intervals along the height direction. Therefore, the first partition plate 5213 and the second partition plate 5214 can divide the first sub-silencing inner cavity into a plurality of small silencing inner cavities, so that the airflow can be turned back and collided for more times to achieve a better silencing effect, and the important point is that the first partition plate 5213 and the second partition plate 5214 are solid plates, and the airflow cannot pass through the first partition plate 5213 and the second partition plate 5214, and it is important to explain that the number, the shape and the distribution direction of the first partition plate 5213 and the second partition plate 5214 in the embodiment are not limited; the concrete structure of orifice plate is not limited in the amortization, as long as possess the amortization function can, the aperture of whole holes on it can equal or the part equals, also can all vary, and the distance also can equal between the adjacent hole, also can not be equal, and the perforation rate of orifice plate sets up between one hundredth to two hundredths in the amortization, and the aperture of every hole all is less than a millimeter on the orifice plate in the amortization, can reach more excellent noise cancelling effect from this.

Amortization cover 5, amortization cover 5 includes amortization inner circle 51 and amortization outer lane 52, amortization outer lane 52 is including being the ring column around the last elliptical ring 521 that amortization inner circle 51 upper portion set up and connecting the oval lower elliptical ring 522 of cross-section at last elliptical ring 521 lower extreme, through adopting foretell last elliptical ring 521 and the structure that oval ring 522 structure comes adaptation amortization inner circle 51, play the effect of abundant amortization, and can adjust the rough construction of the amortization outer lane 52 surface that hand contact used as required, make things convenient for pulling down to use, it is obvious to move back shell convenient operation and noise cancelling effect, for the performance of current structure promoted the amortization greatly and moving back the shell function.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the statement "comprises a" or "comprising" a defined element does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.