TWI580539B - Pneumatic tool exhaust hood with removable flap - Google Patents

Description

Pneumatic tool exhaust hood with detachable flap

The present invention relates to an exhaust hood for a pneumatic tool, and more particularly to a pneumatic tool venting hood having a detachable flap.

Referring to FIG. 1 , a conventional pneumatic tool 1 generally includes a body 2 having a handle 3 . The handle 3 is internally provided with an intake passage 4 and an exhaust passage 5 . The exhaust passage 5 is provided with a sound absorbing member 6, such as a sound absorbing cotton, and the pneumatic tool 1 further includes an exhaust hood 7, which is provided with an air inlet hole 7A corresponding to the air inlet passage 4, and correspondingly The exhaust passage 5 is provided with a venting hole 7B, and can be through the connecting hole 8 through the air inlet hole 7A and the air inlet passage 4, and is directly locked with a plurality of screws 9 to fix the hood 7 In the grip 3, when the user activates the pneumatic tool 1, the compressed gas will swim into the air inlet passage 4 to introduce the pneumatic tool 1, and drive the pneumatic tool 1 to operate, and then the exhaust passage 5 passes through After the noise reduction member 6 is reduced in noise and noise, it is discharged from the vent hole 7B.

However, after the long-term use, the muffling member 6 inevitably needs to be replaced due to the dirt plugging affecting the performance, and the muffling member 6 is disposed to affect the exhaust speed of the pneumatic tool 1, and the output torque of the pneumatic tool 1 is lowered. Therefore, some operating environments may require that the muffler 6 be omitted. However, the conventional pneumatic tool 1 has an exhaust hood 7 through which the through-hole 7A and the intake passage 4 are bored. Directly locked with several screws 9 It is very difficult to disassemble and disassemble, and it is difficult for the user to insert or take out the muffling member 6, and because the user is inconvenient to disassemble, the manufacturer usually needs to simultaneously store the muffler when the pneumatic tool 1 is produced. The pneumatic tool 1 of 6, and the pneumatic tool 1 without the muffler 6 can substantially increase the cost of the pipe pin. Therefore, after observing the above disadvantages, the inventor of the present invention considers the exhaust hood of the conventional pneumatic tool. There is still a need for further improvement, and the invention is produced.

The main object of the present invention is to provide a pneumatic tool exhaust hood with a detachable flap for allowing a user to quickly disassemble a muffler into a pneumatic tool by simply disassembling or installing the baffle. The passage, or the sound absorbing member is taken out from the exhaust passage, without disassembling the entire exhaust hood, so as to facilitate the self-replacement effect.

In order to achieve the above object, a pneumatic tool exhaust hood with a detachable flap provided by the present invention can be disposed on a pneumatic tool, wherein the pneumatic tool has a handle, and the bottom of the handle is worn. An air intake passage and an exhaust passage are disposed, and the exhaust passage is selectively provided with a sound absorbing member, and the exhaust hood includes: a body fixed to the bottom of the handle; And covering the intake passage and the outer side of the exhaust passage, the bottom surface of the main body is provided with an air inlet hole corresponding to the intake passage, and a discharge hole is disposed corresponding to the exhaust passage, and the body is The peripheral side is further provided with at least one recessed groove in the radial direction of the venting hole, the recessed groove is in communication with the venting hole; and at least one blocking piece is detachably embedded in the embedded groove And shielding the vent hole, and the baffle further has at least one through hole corresponding to the vent hole, the through hole communicating with the vent hole and the exhaust passage.

The air tool exhaust hood with a detachable flap provided by the present invention is detachably embedded in the recessed groove, so that the user only needs to remove the damper from the body. The exhaust passage can be exposed, and the muffler can be easily placed into the exhaust passage, or the muffler that has been installed in the exhaust passage can be taken out without disassembling the entire exhaust hood, thereby Not only can the user be able to replace the muffler by himself, but for the manufacturer, the components can be separately stored, and the pneumatic tools not equipped with the muffler can be directly shipped according to the use requirements of the product, or After the assembly of the muffler is assembled, the shipment is carried out, and the cost of the pipe can be greatly reduced.

[study]

1‧‧‧ pneumatic tools

2‧‧‧ Ontology

3‧‧‧Handle

4‧‧‧Intake passage

5‧‧‧Exhaust passage

6‧‧‧Music cotton

7‧‧‧Exhaust hood

7A‧‧‧Air intake

7B‧‧‧ venting holes

8‧‧‧Connectors

9‧‧‧ screws

〔this invention〕

100‧‧‧Exhaust hood

10‧‧‧ Ontology

11‧‧‧Air intake

12‧‧‧ venting holes

13‧‧‧ chamber

131‧‧‧ gap

14‧‧‧Inlay

15‧‧‧First engagement department

151‧‧‧First bump

152‧‧‧first groove

153‧‧‧ card block

16‧‧‧First stop

17‧‧‧ Ring groove

20‧‧ ‧Flap

21‧‧‧ Block

22‧‧‧

23‧‧‧Second engagement department

231‧‧‧second bump

232‧‧‧second groove

233‧‧‧ card slot

24‧‧‧second stop

25‧‧‧ Force Department

26‧‧‧through hole

27‧‧‧Guided curved surface

28A‧‧‧First body

28B‧‧‧Second body

29‧‧‧Connecting Department

30‧‧‧ Limit ring

200‧‧‧ pneumatic tools

201‧‧‧Handle

202‧‧‧Intake passage

203‧‧‧Exhaust passage

204‧‧‧Connectors

205‧‧‧Muffler

Figure 1 is a partial cross-sectional view of a conventional pneumatic tool.

Fig. 2 is a perspective view showing the assembly of the hood of the first embodiment of the present invention assembled to a pneumatic tool.

Fig. 3 is a partial cross-sectional view showing the hood of the first embodiment of the present invention assembled to a pneumatic tool.

Fig. 4 is a perspective view showing the combination of the first embodiment of the present invention.

Fig. 5 is an exploded perspective view showing the first embodiment of the present invention.

Figure 6 is a cross-sectional view showing the combination of the first embodiment of the present invention.

Figure 7 is a partially enlarged cross-sectional view showing the first embodiment of the present invention.

Figure 8 is a schematic view of a pilot gas according to a first embodiment of the present invention.

Figure 9 is a combined perspective view of a second embodiment of the present invention.

Figure 10 is an exploded perspective view of a second embodiment of the present invention.

Figure 11 is a combined perspective view of a third embodiment of the present invention.

Figure 12 is an exploded perspective view of a third embodiment of the present invention.

Please refer to FIG. 2 and FIG. 3 , which are a perspective view of a pneumatic hood assembled in a pneumatic tool according to a first embodiment of the present invention, and a partial cross-sectional view of the ventilating hood assembled to the pneumatic tool, which discloses a detachable type. The pneumatic tool venting cover 100 of the flap is provided for being disposed on a pneumatic tool 200. The pneumatic tool 200 has a handle 201. The bottom of the handle 201 is provided with an intake passage 202 and a row. The air passage 203 is provided with a joint 204, and the exhaust passage 203 is selectively provided with a sound absorbing member 205, such as a sound-absorbing cotton or the like.

4, 5, and 6 are a combined perspective view, an exploded view, and a combined cross-sectional view of the first embodiment of the present invention. The exhaust hood 100 includes:

A body 10 is fixed to the bottom of the handle 201 and covers the outer side of the air inlet passage 202 and the exhaust passage 203. The bottom surface of the body 10 is adjacent to the air inlet passage 202. The air hole 11 and the corresponding exhaust hole 203 are provided with a venting opening 12, and the body 10 has a chamber 13 , and the front side of the body 10 further has a notch 131 communicating with the chamber 13 . The peripheral side of the body 10 is further recessed in the radial direction of the venting opening 12, and at least one recessed groove 14 is formed. The recessed groove 14 communicates with the venting opening 12, and in the embodiment, the notch 131 The inner wall 10 is further provided with at least one first engaging portion 15 . As shown in FIG. 7 , the first engaging portion 15 is formed by a first protruding block 151 . And a first recess 152 disposed adjacent to the first bump 151. As shown in FIG. 6, a front stop portion 16 is protruded from the front side of the body 10 adjacent to the recess 131.

At least one blocking piece 20 is detachably embedded in the recessed groove 14 and covers the venting opening 12. In the embodiment, the blocking piece 20 has a body 21 which is a body 21 The recessed portion 131 is received in the chamber 13 , and the peripheral side of the block body 21 is provided with a fitting edge 22 corresponding to the recessed groove 14 . The inserting edge 22 is embedded in the recessed groove 14 , and the retaining strip 22 The 20th portion of the first engaging portion 15 is provided with at least one second engaging portion 23, as shown in FIG. 7, the second engaging portion 23 is disposed opposite to the first engaging portion 15. The second protrusion 231 is formed by a second recess 232 adjacent to the second protrusion 231. When the first engaging portion 15 and the second engaging portion 23 are locked and fixed, The first protrusion 151 is stuck in the second groove 232, and the second protrusion 231 is stuck in the first groove 152. As shown in FIG. 6, the block 21 of the blocking piece 20 is as shown in FIG. A second blocking portion 24 is protruded from the first blocking portion 16 to allow the first blocking portion 16 to abut the second blocking portion when the blocking piece 20 is embedded in the fitting groove 14 The stopper portion 24 is provided with a force applying portion 25 for facilitating the user's force In the embodiment, the force applying portion 25 is a shallow groove, which can be inserted and fixed by a user with a screwdriver or the like to push the blocking piece 20, and the blocking piece 20 is more correspondingly arranged. The air hole 12 is formed with at least one through hole 26, and the through hole 26 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 the block is formed by the block The top surface of the body 21 is obliquely downwardly disposed toward the opening of the notch 131, and a guiding curved surface 27 is formed at the intersection of the top surface of the blocking piece 20 and the through hole 26.

For a further understanding of the structural features of the present invention, the application of the technical means, and the intended effect, the manner of use of the present invention will be described. It is believed that the present invention may be more deeply and specifically understood as follows:

Please refer to FIG. 3 to FIG. 7 again. Since the flap 20 is removably embedded in the recessed groove 14, the user can push the flap 20 outwardly of the notch 131 by applying a force. The baffle 20 can be detached from the body 10 to expose the exhaust passage 203, and then the muffler 205 can be easily placed into the exhaust passage 203, or the exhaust passage 203 can be installed in the exhaust passage 203. The sound absorbing member 205 is taken out without disassembling the entire hood 100, thereby not only achieving the effect of facilitating the user to replace the sound absorbing member 205, but for the manufacturer, the pneumatic tool 200 can be separately stored first. And the components such as the muffler 205, and the pneumatic tools that are not equipped with the muffler 205 are directly shipped according to the use requirements of the product, or the muffler 205 is assembled and shipped, thereby greatly reducing the cost of the pipe pin. .

It is to be noted that, as shown in FIG. 6 and FIG. 7 , since the main 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 flap 20 into the slot 14, the card is fixed by the first engaging portion 15 and the second engaging portion 23, thereby providing a relatively stable bonding effect. The flap 20 is less likely to fall off, but the user also has difficulty in removing the flap 20 from the body 10. Therefore, the present invention further provides the biasing portion 25 on the flap 20, which is convenient for the user to apply. The flap 20 is pushed by force, whereby the flap 20 can be combined with the effect that it is not easy to fall off in normal use and can be easily disassembled by the user.

It is worth mentioning that, as shown in FIG. 8 again, it is a schematic diagram of the guiding gas according to the first embodiment of the present invention, since the through hole 26 is inclined by the top surface of the blocking piece 20 toward the opening of the notch 131. The downward passage is provided, and a guiding curved surface 27 is disposed at the intersection of the top surface of the blocking piece 20 and the through hole 26, so when the user uses the pneumatic tool 200, the gas discharged from the exhaust passage 203 Will be guided toward the gap 131 as it passes through the venting opening 26 The opening direction is obliquely discharged, and a reverse force is generated to push against the flap 20 toward the rear side of the body 10, thereby ensuring that the flap 20 is not pushed by the gas during use of the pneumatic tool 200. Further, the guide arc surface 27 can guide the gas into the vent hole 26 to reduce turbulence and make the exhaust gas smoother.

Referring to FIG. 9 and FIG. 10 at the same time, a combined perspective view and an exploded perspective view of a second embodiment of the present invention, the hood 100 differs from the first preferred embodiment in that the exhaust hood is The 100 series includes a second blocking piece 20, and the blocking piece 20 is embedded in the fitting groove 14. The circumferential side of the body 10 is further provided with a ring groove 17 and a part of the ring groove 17 is The venting cover 14 is overlapped, and the venting cover 100 includes a limiting ring 30. The limiting ring 30 is sleeved and fixed to the annular groove 17 for limiting the blocking piece 20 to the embedded groove 14. In this embodiment, the limiting ring 30 is an elastic ring, so that the user can easily remove the blocking piece 20 from the insertion groove 14 by simply removing the limiting ring 30. The same effect as that of the first preferred embodiment described above can be achieved in that the sound absorbing member 205 is easily replaced and the cost of the tube pin is reduced.

Referring to FIG. 11 and FIG. 12 simultaneously, 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 first preferred embodiment in that the body 10 is The first engaging portion 15 is a block 153, and the blocking piece 20 has a first piece 28A, a second piece 28B, and a first piece 28A and a second piece 28B. The connecting portion 29, and the first piece 28A, the second piece 28B and the connecting portion 29 are enclosed by a seating space D, wherein the first piece 28A is opposite to the second piece 28B The second engaging portion 23 and the biasing portion 25 are respectively disposed on the outer side, and the second engaging portion 23 is a latching groove 233, thereby transmitting the first engaging portion 15 and the first portion in a normal manner. Second card The 23-phase card is configured to cause the blocking piece 20 to be inserted into the recessed groove 14. When the user wants to remove the blocking piece 20, it is only required to be clamped to the urging portions 25 through an external clamp. The first piece 28A and the second piece 28B are pushed to move toward the letting space D, so that the first engaging portion 15 and the second engaging portion 23 are separated, so that the groove 14 can be easily used. The stoppers 20 are taken out in the same manner, and the same effect as that of the first preferred embodiment described above can be achieved, which is convenient for replacing the muffler 205 and reducing the cost of the pipe pin.

Hereafter, the features of the present invention and its achievable efficacy are stated as follows:

The ventilating cover 100 of the pneumatic tool with a detachable flap provided by the present invention is detachably embedded in the recessed groove 14 by the user, so that the user only needs to block the damper 20 from the body When the 10 is removed, the exhaust passage 203 can be exposed, and the muffler can be easily placed into the exhaust passage 203, or the muffler 205 that has been installed in the exhaust passage 203 can be taken out without The entire exhaust hood 100 is disassembled, thereby not only achieving the effect of facilitating the user to replace the muffler 205, but also for the producer, the components can be separately stored, and then directly shipped according to the use requirements of the product. The pneumatic tool 200 of the muffler 205 is not installed, or the muffler 205 is assembled and shipped, and the cost of the pipe pin can be greatly reduced.

In summary, the present invention has excellent advancement and practicability in similar products, and at the same time, the technical materials of such structures are frequently investigated at home and abroad, and the same structure is not found in the literature. The invention already has the invention patent requirements, and the application is filed according to law.

However, the above-mentioned ones are merely preferred embodiments of the present invention, and the equivalent structural changes of the present invention and the scope of the claims are intended to be included in the scope of the present invention.

100‧‧‧Exhaust hood

10‧‧‧ Ontology

11‧‧‧Air intake

12‧‧‧ venting holes

20‧‧ ‧Flap

26‧‧‧through hole

200‧‧‧ pneumatic tools

201‧‧‧Handle

202‧‧‧Intake passage

203‧‧‧Exhaust passage

204‧‧‧Connectors

205‧‧‧Muffler

Claims (10)

A pneumatic tool exhaust hood with a detachable flap is provided for being disposed on a pneumatic tool, wherein the pneumatic tool has a grip, and the bottom of the grip is provided with an intake passage and an exhaust a passage, and the exhaust passage is selectively provided with a muffler, and the exhaust cover includes: a body fixed to the bottom of the handle, and covering the intake passage and the On the outer side of the exhaust passage, the bottom surface of the main body is provided with an air inlet hole corresponding to the intake passage, and a discharge hole is formed in the corresponding exhaust passage, and the peripheral side of the main body is further along the exhaust hole. The radial recess is provided with at least one recessed groove, the recessed groove is in communication with the venting hole; at least one baffle is detachably embedded in the recessed groove and covers the venting hole, and The baffle further has at least one through hole corresponding to the vent hole, and the through hole communicates with the vent hole and the exhaust passage; thereby allowing the user to quickly insert or disassemble or install the baffle; The muffler is removed without disassembling the entire hood. A venting hood for a pneumatic tool having a detachable flap according to claim 1, wherein the system has a chamber, and a front side of the body has a gap connecting the chamber, and The inner wall of the notch is provided with the recessed groove, and the blocking piece has a body, and the block body is accommodated in the cavity through the notch, the through hole is formed in the block body, and the block body is circumferential The side system is provided with a fitting edge corresponding to the groove, and the edge is embedded in the groove. A venting hood for a pneumatic tool having a detachable flap according to claim 1, wherein the system has a chamber that communicates with the chamber, and the slat is provided a first body, a second body and a connecting portion connecting the first body and the second body, and the first body, the second body and the connecting portion are enclosed Let the space. A venting hood for a pneumatic tool having a detachable flap according to claim 1, wherein the hood includes a second blocking piece, and the blocking pieces are fitted in the fitting groove. The peripheral side of the body is further provided with a ring groove, and a part of the ring groove overlaps the groove, and the exhaust hood includes a limiting ring, and the limiting ring is sleeved and fixed on the ring a slot for limiting the flaps to the recess. A pneumatic tool venting cover with a detachable flap according to any one of claims 1 to 3, wherein the system further comprises at least one first engaging portion, and the blocking piece The first engaging portion is provided with at least one second engaging portion, and the first engaging portion is engageable with the second engaging portion. A venting hood for a pneumatic tool having a detachable flap according to claim 5, wherein the first engaging portion is formed by a first projection and one of the first projections a second groove is formed by a second protrusion opposite to the first engaging portion and a second groove adjacent to the second protrusion. A bump is stuck in the second groove, and the second bump is stuck in the first groove. A venting hood for a pneumatic tool having a detachable flap according to claim 5, wherein the first engaging portion is a block and the second engaging portion is a card slot. The card block can be snapped into the card slot. A venting hood for a pneumatic tool having a detachable flap according to any one of claims 1 to 3, wherein the flap is provided with a urging portion for facilitating a user to push the urging force Block. A venting hood for a pneumatic tool having a detachable flap according to the second aspect of the invention, wherein a front stop of the body is adjacent to the notch and a first stop is protruded, and the block of the cover is A second stopping portion is protruded from the first blocking portion, and the first stopping portion abuts the second stopping portion. A venting hood for a pneumatic tool having a detachable flap according to the second aspect of the invention, wherein the through hole is obliquely downwardly disposed from a top surface of the block toward an opening of the notch, and the A guiding arc is formed at the intersection of the top surface of the block and the through hole.