TW201803703A - Air exhaust hood of pneumatic tool having detachable blocking sheet that allows a user detach or mount a blocking sheet to quickly install or remove a silencing member - Google Patents

Abstract

An air exhaust hood of pneumatic tool having a detachable blocking sheet is provided for installation in a pneumatic tool, wherein a bottom of a handle of the pneumatic tool is provided with an air intake channel and an air exhaust channel. A main body is fixed at the bottom of the handle and is provided with an air intake hole and an air exhaust hole corresponding to the air-intake channel and the air exhaust channel, respectively. Also, a peripheral side of the main body is recessed, in a radial direction of the air exhaust hole, to form at least an embedding slot configured concavely along the diametrical direction of air-exhausting hole. The embedding slot receives a blocking sheet to detachably fit therein. The blocking sheet covers the air exhaust hole and is formed with at least a through hole extending therethrough and corresponding to the air exhaust hole. Accordingly, a user only needs to detach or mount the blocking sheet to quickly put a silencing member into the air exhaust channel, or take out the silencing member from the air exhaust channel without detaching the whole air exhaust hood, thereby achieving an effect of easy self-help replacement.

Description

Air tool exhaust hood with detachable baffle

The present invention relates to an exhaust hood of a pneumatic tool, and more particularly to an exhaust hood of a pneumatic tool with a removable baffle.

Please refer to FIG. 1. The conventional pneumatic tool 1 generally includes a body 2 having a handle 3. The handle 3 is provided with an air inlet channel 4 and an exhaust channel 5. The exhaust passage 5 is provided with a muffler 6, such as a muffler, and the pneumatic tool 1 further includes an exhaust hood 7, the exhaust hood 7 is provided with an air inlet hole 7A corresponding to the air inlet passage 4, and corresponding to The exhaust passage 5 is provided with an exhaust hole 7B, and can be passed through a joint 8 through the intake hole 7A and the intake passage 4 and directly locked with a plurality of screws 9 to fix the exhaust hood 7 At the handle 3, when a user starts the pneumatic tool 1, the compressed gas will swim through the intake channel 4 to the pneumatic tool 1 and drive the pneumatic tool 1 to operate, and then the exhaust channel 5 passes After the sound reduction member 6 reduces sound and noise, it is discharged from the exhaust hole 7B.

However, after a long period of use, the muffler 6 will inevitably need to be replaced due to dirty clogging and affecting performance. Setting the muffler 6 will affect the exhaust speed of the pneumatic tool 1 and reduce the output torque of the pneumatic tool 1. Therefore, in some operating environments, the silencer 6 is not required. However, in the above-mentioned conventional pneumatic tool 1, the exhaust hood 7 is penetrated through the joint 8 through the air inlet hole 7A and the air inlet passage 4, It is directly locked with a number of screws 9, so it is very difficult to disassemble and disassemble the muffler 6 and it is inconvenient for the user to insert or remove the muffler 6. Because the user is inconvenient in disassembling and disassembling himself, when the manufacturer produces the pneumatic tool 1, Generally, it is necessary to simultaneously store the pneumatic tool 1 equipped with the muffler 6 and the pneumatic tool 1 without the muffler 6, which substantially increases the cost of the pipe pin. Therefore, after observing the above disadvantages It is believed that the exhaust hood of conventional pneumatic tools still needs to be further improved, so the invention has been produced.

The main purpose of the present invention is to provide a pneumatic tool exhaust hood with a detachable baffle, which allows users to quickly insert a muffler into the exhaust of a pneumatic tool as long as the baffle is removed or installed. Channel, or take out the muffler from the exhaust channel without dismantling the entire exhaust hood, so as to achieve the effect of easy replacement.

In order to achieve the above object, a pneumatic tool exhaust cover with a detachable baffle provided by the present invention can be installed in a pneumatic tool, wherein the pneumatic tool has a grip, and the bottom of the grip is worn through There is an air intake channel and an exhaust channel, and the exhaust channel can be optionally provided with a muffler. The exhaust hood includes: a body, which is fixed on the bottom of the handle. And is covered on the outside of the intake passage and the exhaust passage, and the bottom surface of the body is provided with an intake hole corresponding to the intake passage, and an exhaust hole is provided corresponding to the exhaust passage, and the body At the peripheral side, at least one recessed groove is recessed along the radial direction of the exhaust hole, and the recessed groove is in communication with the exhaust hole; and at least one baffle is detachably embedded in the recessed groove. And cover the exhaust hole, and at the same time, the baffle plate is provided with at least one through hole corresponding to the exhaust hole, and the through hole communicates with the exhaust hole and the exhaust channel.

The exhaust hood of a pneumatic tool with a detachable baffle provided by the present invention, since the baffle is detachably embedded in the recess, so the user only needs to remove the baffle from the body. That is, the exhaust channel can be exposed, and the muffler can be easily placed in the exhaust channel, or the muffler installed in the exhaust channel can be taken out without disassembling the entire exhaust hood. Not only can it achieve the effect of facilitating the user to replace the muffler, but for the producer, it can store each component separately, and then directly ship the pneumatic tool without the muffler according to the use requirements of the product, or After the assembly of the muffler is completed, the product is shipped, which can greatly reduce the cost of management and sales.

Please refer to FIG. 2 and FIG. 3, which are perspective views of the exhaust hood assembled in a pneumatic tool and a partial cross-sectional view of the exhaust hood assembled in a pneumatic tool according to the first embodiment of the present invention. The pneumatic tool exhaust hood 100 of the flap can be installed in a pneumatic tool 200, wherein the pneumatic tool 200 has a grip 201, and an air inlet channel 202 and a row are passed through the bottom of the grip 201 The air passage 203 is provided with a joint 204 therethrough, and the exhaust passage 203 is optionally provided with a muffler 205, such as a muffler.

Please refer to FIG. 4, FIG. 5, and FIG. 6 again, which are a combined perspective view, an exploded view, and a combined sectional view of the first embodiment of the present invention. The exhaust hood 100 includes:

A main body 10 is fixed on the bottom of the handle 201 and covers the outside of the air intake passage 202 and the exhaust passage 203. The bottom surface of the main body 10 is provided with an inlet corresponding to the air intake passage 202. The air hole 11 and an exhaust hole 12 are formed correspondingly to the exhaust passage 203, and the body 10 has a cavity 13, and a notch 131 is formed on the front side of the body 10 to communicate with the cavity 13, and The peripheral side of the body 10 is further recessed with at least one recessed groove 14 along the radial direction of the exhaust hole 12. The recessed groove 14 communicates with the exhaust hole 12. In this embodiment, it is tied to the gap 131. The inner wall is provided with the inserting groove 14. In addition, the body 10 is further provided with at least a first engaging portion 15. Please refer to FIG. 7. The first engaging portion 15 is formed by a first projection 151. Formed with a first groove 152 adjacent to the first protrusion 151, and as shown in FIG. 6, a first stopper 16 is protruded from the front side of the body 10 adjacent to the notch 131.

At least one baffle 20 is detachably embedded in the inserting groove 14 and covers the exhaust hole 12. In this embodiment, the baffle 20 has a block 21, and the block 21 is The cavity 13 is accommodated in the cavity 13 through the notch 131, and a peripheral edge of the block 21 is provided with an insert edge 22 corresponding to the insert groove 14. The insert edge 22 is embedded in the insert groove 14, and the blocking piece The 20 series is provided with at least one second engaging portion 23 corresponding to the first engaging portion 15. Please refer to FIG. 7. The second engaging portion 23 is one of the opposite to the first engaging portion 15. The second protrusion 231 and a second groove 232 adjacent to the second protrusion 231 are configured to make the first engaging portion 15 and the second card and portion 23 to be locked and fixed. The first bump 151 is locked in the second groove 232, and the second bump 231 is locked in the first groove 152. As shown in FIG. 6, the block 21 of the blocking piece 20 A second stopper 24 is protruded corresponding to the first stopper 16 to allow the first stopper 16 to abut against the second stopper when the stopper 20 is embedded in the recess 14. The stopper 24, and the blocking piece 20 is provided with a force applying portion 25, which is convenient for the user to apply force The blocking piece 20 is moved. In this embodiment, the force applying portion 25 is a shallow groove, which can be inserted and fixed by a user using a screwdriver or the like to push the blocking piece 20. In addition, the blocking piece 20 corresponds to a row. The air hole 12 is provided with at least one through hole 26 which communicates with the exhaust hole 12 and the exhaust passage 203. In this embodiment, the through hole 26 is formed in the block 21 and is formed by the block. A top surface of the body 21 penetrates through the opening 131 obliquely downward, and a guide arc surface 27 is formed at a junction between the top surface of the blocking piece 20 and the through hole 26.

In order to further understand the structural features of the present invention, the use of technical means, and the expected effects, the manner of use of the present invention is described. It is believed that the deeper and specific understanding of the present invention can be obtained as follows:

Please continue to refer to FIG. 3 to FIG. 7. Since the blocking piece 20 is detachably embedded in the recessed groove 14, as long as the user pushes the blocking piece 20 toward the outside of the notch 131, The baffle 20 can be removed from the body 10 to expose the exhaust passage 203, and then the muffler 205 can be easily placed in the exhaust passage 203, or it can be installed in the exhaust passage 203. The muffler 205 can be taken out without removing the entire exhaust hood 100, thereby not only achieving the effect of facilitating the user to replace the muffler 205 by itself, but also for the manufacturer, the pneumatic tool 200 can be stored separately first. According to the use requirements of the product, components such as the muffler 205 can be directly shipped without pneumatic tools without the muffler 205, or shipped after the muffler 205 is assembled, which can significantly reduce the cost of management and marketing. .

It is worth mentioning that, referring to FIG. 6 and FIG. 7, since the body 10 is provided with the first engaging portion 15 and the blocking piece 20 is provided with the second engaging portion 23, When the user inserts the blocking piece 20 into the recessed groove 14 at this time, it is locked through the phase of the first engaging portion 15 and the second engaging portion 23, which can provide a relatively stable bonding effect, making the The blocking piece 20 is less likely to fall off, but this also makes it difficult for a user to remove the blocking piece 20 from the body 10. Therefore, the present invention is further provided with the force applying portion 25 on the blocking piece 20, which is convenient for the user to apply. The blocking piece 20 is strongly pushed, thereby enabling the blocking piece 20 to have the effects of being difficult to fall off and being easily disassembled by a user in normal use.

It is worth mentioning that, please refer to FIG. 8 again, which is a schematic diagram of the guide gas of the first embodiment of the present invention, because the through hole 26 is inclined by the top surface of the baffle 20 toward the opening direction of the notch 131 A downward guide is provided, and a guide arc surface 27 is provided at the junction between the top surface of the baffle 20 and the through hole 26. Therefore, when a user uses the pneumatic tool 200, the gas discharged from the exhaust channel 203 When passing through the exhaust hole 26, it will be guided to be discharged obliquely toward the opening direction of the notch 131, and a reverse force will be generated to push the blocking piece 20 to move toward the rear side of the body 10. This can ensure that the baffle 20 will not be pushed away by the gas during the use of the pneumatic tool 200 and fall off. In addition, the guiding arc surface 27 can better guide the gas into the exhaust hole 26 to reduce turbulence. The flow is generated to make the exhaust more smooth.

Please refer to FIG. 9 and FIG. 10 at the same time, a combined perspective view and an exploded perspective view of the second embodiment of the present invention. The exhaust hood 100 is different from the foregoing first preferred embodiment in that the exhaust hood The 100 series includes two baffles 20, which are fitted in the recess 14 in a mating manner, and a ring groove 17 is further provided on the peripheral side of the body 10, and a part of the ring groove 17 is connected with The recessed groove 14 overlaps, and the exhaust hood 100 includes a stop ring 30 which is fixed on the ring groove 17 and can be used to limit the blocking pieces 20 in the recessed groove 14. In this embodiment, the stop ring 30 is an elastic ring, thereby allowing the user to easily take out the blocking pieces 20 from the insertion groove 14 as long as the stop ring 30 is removed, The same effects as the first preferred embodiment described above can be achieved to facilitate the replacement of the muffler 205 and to reduce the cost of management.

Please refer to FIG. 11 and FIG. 12 at the same time. A combined perspective view and an exploded perspective view of the third embodiment of the present invention. The exhaust hood 100 is different from the foregoing first preferred embodiment in that the body 10 The first engaging portion 15 is a clamping block 153, and the blocking piece 20 has a first piece 28A, a second piece 28B, and a connecting piece between the first piece 28A and the second piece 28B. A connecting portion 29, and a space D is enclosed between the first piece 28A, the second piece 28B and the connecting portion 29, wherein the first piece 28A and the second piece 28B are opposite to each other. The outer side is provided with the second engaging portion 23 and the urging portion 25 respectively, and the second engaging portion 23 is an engaging groove 233, whereby the first engaging portion 15 and the first engaging portion are normally connected through the first engaging portion 15 and the first engaging portion 25. The two engaging parts are locked in 23 phases, so that the blocking piece 20 is locked in the recessed groove 14, and when the user wants to remove the blocking piece 20, he only needs to clamp the force applying parts through an external clamp. 25, and force the first sheet body 28A and the second sheet body 28B to move toward the yielding space D, so that the first engaging portion 15 and the second engaging portion 23 are separated, and the The recessed groove 14 The blocking pieces 20 are taken out inside, and the same effects as the first preferred embodiment described above can be achieved, such as facilitating the replacement of the muffler 205 and reducing the cost of management.

Hereby, the features of the present invention and the expected effects that can be achieved are stated as follows:

The pneumatic tool exhaust hood 100 with a detachable baffle provided by the present invention, since the baffle 20 is detachably embedded in the recess 14, so the user only needs to remove the baffle 20 from the body. 10 can be removed to expose the exhaust channel 203, and the muffler can be easily placed in the exhaust channel 203, or the muffler 205 installed in the exhaust channel 203 can be taken out without Disassembling the entire exhaust hood 100 can not only achieve the effect of facilitating the user to replace the muffler 205 by itself, but also for the manufacturer, each component can be stored separately and then shipped directly according to the use requirements of the product The pneumatic tool 200 without the muffler 205 is installed, or the muffler 205 is assembled and then shipped, which can greatly reduce the cost of sales and management.

In summary, the present invention has excellent progress and practicality among similar products. At the same time, it has traversed domestic and foreign technical data on such structures. It has not been found in the literature that the same structure exists first. Therefore, The present invention already has the elements of an invention patent, and the application is filed according to law.

However, the above is only one of the preferred feasible embodiments of the present invention. Therefore, any equivalent structural changes made by applying the description of the present invention and the scope of patent application should be included in the patent scope of the present invention.

[Learning]
1‧‧‧Pneumatic tools
2‧‧‧ Ontology
3‧‧‧ grip
4‧‧‧ intake channel
5‧‧‧ exhaust channel
6‧‧‧ Silencer
7‧‧‧ exhaust hood
7A‧‧‧Air inlet
7B‧‧‧Vent hole
8‧‧‧ connector
9‧‧‧ Screw [Invention]
100 ‧‧‧ exhaust hood
10‧‧‧ Ontology
11‧‧‧air inlet
12‧‧‧ exhaust hole
13‧‧‧ chamber
131‧‧‧ gap
14‧‧‧ Recessed
15‧‧‧The first engaging part
151‧‧‧The first bump
152‧‧‧First groove
153‧‧‧Card Block
16‧‧‧First stop
17‧‧‧ ring groove
20 ‧‧‧baffle
21‧‧‧block
22‧‧‧ inlay
23‧‧‧Second engagement section
231‧‧‧Second bump
232‧‧‧Second groove
233‧‧‧Card slot
24‧‧‧Second stop
25‧‧‧force department
26‧‧‧through hole
27‧‧‧Guide arc
28A‧‧‧First body
28B‧‧‧Second body
29‧‧‧Connecting Department
30‧‧‧ stop ring
200‧‧‧Pneumatic tools
201‧‧‧ Grip
202‧‧‧Air inlet channel
203‧‧‧Exhaust channel
204‧‧‧ connector
205‧‧‧ Silencer

Figure 1 is a partial cross-sectional view of a conventional pneumatic tool. Fig. 2 is a perspective view of the exhaust hood assembled to the pneumatic tool according to the first embodiment of the present invention. Fig. 3 is a partial cross-sectional view of the exhaust hood assembled to the pneumatic tool according to the first embodiment of the present invention. Fig. 4 is a combined perspective view of the first embodiment of the present invention. Fig. 5 is an exploded perspective view of the first embodiment of the present invention. Fig. 6 is a combined sectional view of the first embodiment of the present invention. Fig. 7 is a partially enlarged sectional view of the first embodiment of the present invention. FIG. 8 is a schematic diagram of a pilot gas according to the first embodiment of the present invention. Fig. 9 is a combined perspective view of a second embodiment of the present invention. Fig. 10 is an exploded perspective view of a second embodiment of the present invention. Fig. 11 is a combined perspective view of a third embodiment of the present invention. Fig. 12 is an exploded perspective view of a third embodiment of the present invention.

100‧‧‧ exhaust hood

10‧‧‧ Ontology

11‧‧‧air inlet

12‧‧‧ exhaust hole

20‧‧‧baffle

26‧‧‧through hole

200‧‧‧Pneumatic tools

201‧‧‧ Grip

202‧‧‧Air inlet channel

203‧‧‧Exhaust channel

204‧‧‧ connector

205‧‧‧ Silencer

Claims (10)

A pneumatic tool exhaust hood with a detachable baffle can be installed on a pneumatic tool, wherein the pneumatic tool has a grip, and the bottom of the grip is provided with an intake channel and an exhaust. Channel, and the exhaust channel can be optionally provided with a muffler, and the exhaust hood includes: a body, which is fixed on the bottom of the handle and covers the intake channel and the On the outer side of the exhaust channel, the bottom surface of the body is provided with an air inlet hole corresponding to the air inlet channel, and an exhaust hole is provided corresponding to the air outlet channel, and the peripheral side of the body is further along the exhaust hole. At least one recessed groove is provided in the radial recess, and the recessed groove is in communication with the exhaust hole. At least one baffle is detachably embedded in the recessed groove and covers the exhaust hole. The baffle is further provided with at least one through hole corresponding to the exhaust hole, and the through hole communicates with the exhaust hole and the exhaust channel; thereby, the user can quickly insert or remove the baffle by simply removing or installing the baffle. Remove the muffler without removing the entire exhaust hood. The exhaust hood of a pneumatic tool with a detachable baffle according to item 1 of the scope of the patent application, wherein the system has a cavity, and a notch communicating with the cavity is provided on the front side of the body, and The inserting groove is provided on the inner wall of the notch, and the baffle plate has a block, the block is accommodated in the chamber through the notch, the through hole is formed in the block, and the circumference of the block is A side edge is provided with an insert edge corresponding to the insert groove, and the insert edge is embedded in the insert groove. According to the exhaust hood of a pneumatic tool with a detachable baffle according to item 1 of the scope of the patent application, the system has a cavity, the recess is connected to the cavity, and the baffle has a first A piece, a second piece, and a connection portion connecting the first piece and the second piece, and the first piece, the second piece, and the connection portion are surrounded by a concession. space. The exhaust hood of a pneumatic tool with a detachable flap according to item 1 of the scope of the patent application, wherein the exhaust hood includes two baffles, and the baffles are fitted in the recessed grooves, In addition, a ring groove is further provided on the peripheral side of the body, and a part of the ring groove overlaps with the embedded groove, and the exhaust hood includes a limit ring, and the limit ring is sleeved and fixed on the ring. The slot can be used to limit the baffles in the recess. The exhaust hood of a pneumatic tool with a removable baffle according to any one of claims 1 to 3 of the scope of the patent application, wherein the system further includes at least one first engaging portion, and the baffle Then, at least one second engaging portion is provided corresponding to the first engaging portion, and the first engaging portion can be fixed and fixed with the second card and portion. The pneumatic tool exhaust cover with a detachable baffle according to item 5 of the scope of the patent application, wherein the first engaging portion is formed by a first protrusion and a first adjacent to the first protrusion. A second groove is formed by a groove, and the second engaging portion is formed by a second protrusion opposite to the first engaging portion and a second groove adjacent to the second protrusion. A bump is latched on the second groove, and the second bump is latched on the first groove. According to the exhaust hood of a pneumatic tool with a removable baffle according to item 5 of the scope of the patent application, wherein the first engaging portion is a clamping block and the second engaging portion is a clamping slot, The card block can be clamped in the card slot. The exhaust hood of a pneumatic tool with a removable baffle according to any one of the claims 1 to 3, wherein the baffle is provided with a force applying part, which can facilitate the user to push the force Baffle. According to the exhaust hood of a pneumatic tool with a removable baffle according to item 2 of the scope of the patent application, wherein a first stopper is convexly protruded adjacent to the gap on the front side of the body, and the block body of the baffle is A second stopper is convexly provided corresponding to the first stopper, and the first stopper is abutted against the second stopper. The exhaust hood of a pneumatic tool with a detachable baffle according to item 2 of the scope of the patent application, wherein the through hole is slanted downwardly from the top surface of the block toward the opening direction of the notch, and the A guide arc surface is formed at the junction between the top surface of the block and the through hole.