CN201423621Y - Gunpowder Nailer - Google Patents

Abstract

The gunpowder nailing device is used for triggering a gunpowder cartridge, the gunpowder cartridge is provided with a rear end part and a ring-shaped primer positioned at the rear end part, and the gunpowder nailing device comprises a hollow tubular body and a percussion device arranged in the body and close to the rear end part. The percussion device comprises a percussion needle seat and a percussion needle. The striker base is limited on the inner wall surface of the body and is provided with a through hole extending along the front-back direction. The firing pin can be located the firing pin seat rear with regard to the firing pin seat with displacement forward and backward, and the firing pin has a perforation that stretches into the firing pin seat and can trigger the front end percussion portion of cartridge case primer, and the central axis of firing pin and the central axis of cartridge case are located same straight line, and the front end external diameter of front end percussion portion is between the internal diameter and the external diameter of cartridge case primer to make front end percussion portion can really trigger the cartridge case primer and consequently improve the percussion rate.

Description

Gunpowder Nailer

technical field

The utility model relates to a gunpowder nail driver, in particular to a gunpowder nail driver with a high firing rate and high safety.

Background technique

Referring to Fig. 1, the existing hand-hammer-triggered gunpowder nail driver 1 comprises a generally tubular hollow body 11, an inner tube 12 that can move back and forth in the body 11, a rear end connected to the inner tube 12 and formed at the rear end. A primer cover 13 for a chamber 131 for a powder cartridge (not shown), a piston rod 14 movable back and forth in the inner tube 12 and driven by the fired powder cartridge, and a firing device 15 .

The firing device 15 includes a firing pin seat 151 embedded in the body 11 with the front end abutting against the rear end of the flash cap 13 , a firing pin 152 passing through the firing pin seat 151 from the front, a firing pin seat 151 abutting against the firing pin seat 151 and A compression spring 153 sleeved on the firing pin 152, a screw lock fixed to the rear end of the firing pin 152 and a nut 154 abutting against the other end of the compression spring 153, and a nut 154 passing through the nut 154 and the firing pin 152 to fix the screw The positioning pin 158 of the position of the cap 154 relative to the firing pin 152 . In addition, a concave cavity 156 is formed in the front of the firing pin seat 151 , and a head 155 is formed at the front end of the firing pin 152 .

Generally speaking, the firing pin 152 adopts a bolt-like structure, and the compression spring 153 needs to be limited by the nut 154 so that it is biased to the set bias force first. The force of the bias force set by the spring 153 strikes the nut 154 and the exposed portion 157 of the firing pin 152 , so that the head 155 of the firing pin 152 touches forward and strikes the powder cartridge, driving the piston rod 14 .

It should be noted that since the size of the head 155 of the firing pin 152 is larger than that of the gunpowder cartridge, if the firing pin 152 is slightly deflected during firing, the powder cartridge cannot be fired, thereby reducing the firing rate.

In addition, in order to prevent the gunpowder cartridge from falling out when the front end of the gunpowder nail driver 1 is upright, a shrapnel 159 embedded in the front end of the firing pin seat 151 is provided between the firing pin seat 151 and the flash cap 13 .

However, when the gunpowder nailer 1 falls from a high place, the gravitational force generated by the inner tube 12 and the cap cover 13 will be applied to the gunpowder cartridge and cause the gunpowder cartridge to collide with the shrapnel 159, so the powder nailer 1 may still be damaged. The safety is affected by firing, so there is room for further improvement.

Utility model content

The purpose of the utility model is to provide a gunpowder nail driver with a high firing rate of the firing device.

Another purpose of the utility model is to provide a gunpowder nail driver with high safety.

In order to achieve one or all of the above objectives, the powder nail driver of the present invention is used to trigger a powder cartridge, the powder cartridge has a rear end and an annular primer located at the rear end, the powder nail driver includes The body is generally hollow tubular, and a firing device is arranged in the body near the rear end.

The firing device includes a firing pin seat and a firing pin. The firing pin seat is limited to be located on the inner wall of the body, and the firing pin seat has a through hole extending along the front-back direction. The firing pin can be displaced back and forth relative to the firing pin seat behind the firing pin seat, the firing pin has a perforation extending into the firing pin seat and can trigger the firing portion of the front end of the powder cartridge primer, the center of the firing pin The axis is on the same straight line as the central axis of the gunpowder cartridge, and the outer diameter of the front end of the firing portion is between the inner diameter and outer diameter of the primer of the gunpowder cartridge.

Preferably, the perforation of the firing pin seat has a front section, the diameter of the front section is tapered from front to back, and the outer diameter of the rear end of the powder cartridge is larger than the minimum diameter of the front section.

Preferably, the outer diameter of the rear end of the powder cartridge is equal to the maximum aperture of the front section, or the outer diameter of the rear end of the powder cartridge is slightly smaller than the maximum aperture of the front section.

Preferably, the firing portion at the front end of the striker has a large outer diameter section, and a small outer diameter section connected to the front end of the large outer diameter section and having an outer diameter smaller than the outer diameter of the large outer diameter section, the small outer diameter The segment triggers the powder cartridge primer, and the outer diameter of the small outer diameter segment is between the inner diameter and the outer diameter of the powder cartridge primer.

Preferably, the perforation of the firing pin seat also has a small aperture section connected to the rear end of the front section and the aperture is equal to the minimum aperture of the front section, and a small aperture section connected to the rear end of the small aperture section and the aperture is larger than the small aperture section. In the large aperture section of the aperture, the axial length of the firing portion at the front end is less than the axial length of the perforation of the firing pin seat, and the axial length of the large outer diameter section is less than the axial length of the large aperture section, The large outer diameter section is accommodated in the large aperture section, the small outer diameter section is partially accommodated in the large aperture section and the rest is accommodated in the small aperture section.

Preferably, the firing pin also has a shaft portion extending in the front-rear direction and connected to the rear end of the firing portion at the front end, a head connected to the rear end of the shaft portion and exposed to the rear end of the body, and a shaft portion located at the rear end of the body. The shoulder between the shaft part and the front-end firing part, the front-end firing part, the shaft part and the head are integrally connected to each other. The firing device also includes a locking part and an elastic element. The piece is sleeved on the shaft of the firing pin and is limited to the inner wall of the body, the engaging piece is located behind the firing pin seat, the elastic element is sleeved on the firing pin, and one end of the elastic element is in contact with the firing pin The head and the other end of the needle are biased towards the catch to force the catch against the shoulder of the firing pin.

Preferably, the engaging member is recessed to form a notch groove for the engaging member to be sleeved on the shaft portion in a radial direction.

Preferably, the engaging member is roughly in the shape of a sheet.

Preferably, the firing device further includes a gasket set on the shaft part and between the other end of the elastic element and the front firing part, and the elastic element forces the engaging part to lean against the front end by the gasket. against the shoulder of the firing pin.

Preferably, the engaging part leans against the firing pin seat, the body has a tube body and a handle set on the outside of the tube body, the rear end of the tube body is located in the handle part, and the The inner wall of the tube body is formed with a first baffle and a second baffle spaced behind the first baffle and adjacent to the rear end of the tube body, the firing pin abuts against the first baffle and the gasket abuts against the first baffle. Connected to the second retaining edge to limit the firing pin seat and the engaging member on the inner wall of the main body.

Preferably, the second retaining edge is formed by partial deformation of the rear end of the pipe body.

The beneficial effect of the utility model lies in that: the outer diameter of the front end of the firing pin is between the inner diameter and the outer diameter of the powder cartridge primer, so that the front end firing part can trigger the powder cartridge primer. Increases firing rate. In addition, the outer diameter of the rear end of the powder cartridge is larger than the minimum aperture of the front section of the firing pin seat, so that the powder cartridge will not fall out or be misfired, improving the safety in use.

Description of drawings

Fig. 1 is a sectional view illustrating a conventional powder nail driver.

Fig. 2 is a perspective view illustrating a preferred embodiment of the gunpowder nail driver of the present invention.

Figure 3 is an exploded perspective view illustrating a firing mechanism.

Fig. 4 is a sectional view illustrating the preferred embodiment.

Fig. 5 is a partially enlarged view of Fig. 4, illustrating that a firing pin has not fired a powder cartridge.

Figure 6 is a rear view of the powder cartridge.

Figure 7 is a view similar to Figure 5 illustrating the firing pin firing the powder cartridge.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail:

Referring to Fig. 2 and Fig. 4, the preferred embodiment of the utility model gunpowder nail driver 2 includes a body 21 extending in the front and rear directions and roughly in the shape of a hollow tube, an inner tube 22 that can move back and forth in the body 21, a screw Connected to the rear end of the inner tube 22 and the rear end forms a flash cap sleeve 23 for a chamber 231 for a powder cartridge 9 to be placed, and a piston rod 24 that can move back and forth in the inner tube 22 and is driven by the fired powder cartridge 9 , and a firing device 3 disposed in the body 21 near the rear end and used to trigger the powder cartridge 9 in the chamber 231 of the cap 23 forward.

Referring to FIG. 5 and FIG. 6 , it should be noted that the aforementioned gunpowder cartridge 9 has a rear end 91 and an annular primer 92 located at the rear end 91 to detonate the gunpowder 93 inside the gunpowder cartridge 9 . Wherein, the effective percussion area is between the inner diameter and the outer diameter of the ring-shaped primer 92 .

Referring to FIG. 3 , FIG. 4 and FIG. 5 , in this embodiment, the body 21 has a tube body 211 and a handle 212 set outside the rear end of the tube body 211 for the user to hold. The inner wall of the body portion 211 is formed with a first retaining edge 213 and a second retaining edge 214 spaced behind the first retaining edge 213 and adjacent to the rear end of the pipe body portion 211. The first retaining edge 213 and the second retaining edge 214 are both Ring, its function will be explained later.

The firing device 3 includes a firing pin seat 4 , a firing pin 5 , a locking member 6 , a washer 7 and an elastic element 8 .

The firing pin seat 4 is disposed behind the flash cap 23 . The firing pin seat 4 is limited to the inner wall of the tube body 211 of the body 21 and has a through hole 41 extending along the front-to-back direction. In this embodiment, the through hole 41 of the firing pin base 4 has a front section 413 , a small-diameter section 412 , and a large-diameter section 411 in sequence from front to back. The aperture of the front section 413 is tapered from front to back, the small aperture section 412 is connected to the rear end of the front section 413 and the aperture is equal to the minimum aperture of the front section 413, the large aperture section 411 is connected to the rear end of the small aperture section 412 and the aperture is larger than that of the small aperture section 412 aperture. It should be noted that the firing pin seat 4 can be directly processed by a lathe without special shape processing, thus reducing the processing cost.

The firing pin 5 can be displaced back and forth relative to the firing pin seat 4 and is located behind the firing pin seat 4. The firing pin 5 has a perforation extending into the firing pin seat 4 and can trigger the firing portion 53 of the front end of the gunpowder cartridge 9 primer 92. A shaft part 52 extending in the direction and connected to the rear end of the front end firing part 53, a head 51 connected to the rear end of the shaft part 52 and exposed to the rear end of the body 21 for the user to strike, and a shaft part 52 located at the rear end of the shaft part 52. The shoulder 54 between the front end firing part 53, wherein the front end firing part 53, the shaft part 52 and the head part 51 are integrally connected to each other, and the outer diameter of the head part 51 is larger than the outer diameter of the shaft part 52 and the front end The outer diameter of the firing portion 53 .

The central axis of the firing pin 5 and the central axis of the gunpowder cartridge 9 are on the same straight line, and the outer diameter of the front end of the firing portion 53 is between the inner diameter and the outer diameter of the primer 92 of the gunpowder cartridge 9 . In this embodiment, the firing portion 53 at the front end of the firing pin 5 has a large outer diameter section 531 and a small outer diameter section 532 connected to the front end of the large outer diameter section 531 and having an outer diameter smaller than that of the large outer diameter section 531 . The small outer diameter section 532 triggers the primer 92 of the powder cartridge 9 , and the outer diameter of the small outer diameter section 532 is between the inner diameter and the outer diameter of the primer 92 of the powder cartridge 9 .

In particular, the axial length of the front firing portion 53 is less than the axial length of the through hole 41 of the firing pin seat 4, and the axial length of the large outer diameter section 531 is shorter than the axial length of the large aperture section 411. , so that the large outer diameter section 531 of the front firing part 53 is accommodated in the large aperture section 411 , and the small outer diameter section 532 is partly accommodated in the large aperture section 411 and the rest is accommodated in the small aperture section 412 . In this way, the distance that the firing pin 5 moves forward when firing can be limited.

The shaft part 52 of the firing pin 5 has a first section 521 whose rear end is connected to the head 51 , and a second section which is connected between the first section 521 and the front firing part 53 and whose outer diameter is smaller than that of the first section 521 . Section 2 522. In this embodiment, the outer diameter of the second section 522 is smaller than that of the large outer diameter section 531 to form the aforementioned shoulder 54 , and the outer diameter of the first section 521 is equal to the outer diameter of the large outer diameter section 531 . However, in actual processing, a second segment 522 with a smaller outer diameter is turned on a part of a bar with the same outer diameter.

The engaging member 6 is sleeved on the shaft portion 52 of the firing pin 5 and is limited to be located on the inner wall of the tube portion 211 of the body 21 , and the engaging member 6 is located behind the firing pin seat 4 . In this embodiment, the engaging member 6 is roughly in the shape of a sheet, and is recessed to form a notch 61 for the engaging member 6 to be sleeved on the shaft portion 52 in a radial direction. It should also be noted that the notch 61 of the engaging member 6 extends radially along the shaft portion 52 of the firing pin 5 and is open at one radial end 611 , and the width I of the notch 61 is roughly equal to the outer diameter of the second section 522 And smaller than the outer diameter of the large outer diameter section 531, so that the other end 612 of the notch groove 61 of the engaging member 6 can radially fit into the second section 522 of the shaft portion 52, and the engaging member 6 fits Behind the second section 522 of the shaft portion 52 , the firing pin 5 cannot be separated from the front end firing portion 53 forward.

The spacer 7 is sleeved on the shaft portion 52 of the firing pin 5 and is located behind the engaging member 6. The spacer 7 has an opening 71 with an aperture larger than the outer diameter of the large outer diameter section 531 of the firing part 53 at the front end of the firing pin 5. It can be sleeved on the shaft portion 52 from the front.

The elastic element 8 is sleeved on the shaft portion 52 of the firing pin 5 , one end of the elastic element 8 abuts against the head 51 of the firing pin 5 and the other end is biased toward the engaging member 6 to force the engaging member 6 to abut against the firing pin. 5 shoulders 54 . In this embodiment, the two ends of the elastic element 8 are respectively abutted against the head 51 of the firing pin 5 and the gasket 7, and the gasket 7 forces the engaging member 6 to abut against the second section 522 of the firing pin 5 and the gasket 7. The shoulder portion 54 between the large outer diameter portions 531 .

In addition, the elastic element 8 in this embodiment is a compression spring, the inner diameter of which is larger than the outer diameter of the large outer diameter section 531 of the striker 5 and can be sleeved on the shaft portion 52 from the front.

The following describes the assembly of each element of the firing device 3. First, the elastic element 8 is sleeved on the shaft portion 52 of the firing pin 5 from the front of the firing pin 5, and the rear end of the elastic element 8 is abutted against the head 51 of the firing pin 5. . Then the spacer 7 is sleeved on the shaft portion 52 of the firing pin 5 from the front, and then the jig (not shown) is pressed against the spacer 7 to bias the elastic element 8 backward until the spacer 7 exceeds the shoulder 54 Then the engaging member 6 is directly sleeved on the second section 522 of the shaft portion 52 from the radial direction and is located in front of the washer 7 . In this way, after the jig is moved away, the elastic element 8 forces the engaging member 6 to abut against the shoulder 54 of the firing pin 5 with the front end by virtue of the elastic restoring force. Through the above steps, the bias positioning of the elastic element 8 is completed, and the requirement for the set bias force of the elastic element 8 is achieved.

Next, the assembly of the firing device 3 and the tubular body portion 211 of the main body 21 will be described. First, when the firing device 3 has not been assembled with the tubular body portion 211, the second retaining edge 214 of the tubular body portion 211 has not yet been bent and formed. (That is, the inner wall surface of the tube body portion 211 behind the first retaining edge 213 has the same inner diameter).

First, install the firing pin seat 4 into the rear end of the tube body 211 from back to front and abut the shoulder 42 of the firing pin seat 4 against the first retaining edge 213 . Then, the aforementioned module including the firing pin 5, the engaging member 6, the spacer 7 and the elastic element 8 is installed from the back to the front, so that the front firing portion 53 of the firing pin 5 is inserted into the perforation 41 of the firing pin seat 4, And make the engaging piece 6 lean against the firing pin seat 4 . Next, the second retaining edge 214 of the tube body 211 is bent inwardly with a jig (not shown) to abut against the gasket 7, that is to say, the second retaining edge 214 is partially deformed at the rear end of the tube body 211 formed. In this way, the firing pin seat 4 , the engaging member 6 and the washer 7 can be limited to the inner wall surface of the tube body portion 211 of the main body 21 to complete the assembly. Therefore, no matter the assembly between the components of the firing device 3 or the assembly of the firing device 3 and the tubular body portion 211 of the main body 21 is quite fast and convenient.

It should be noted that, compared with the way in which the elastic element 8 directly abuts against the engaging member 6 , it is more convenient to use the jig to compress the elastic element 8 by means of the arrangement of the gasket 7 . However, although this embodiment discloses the spacer 7 disposed between the elastic element 8 and the engaging member 6, the firing device 3 may not have the spacer 7, that is to say, the elastic element 8 may not pass through the spacer 7. After being directly biased by the jig, it abuts against the engaging part 6 , so that the engaging part 6 abuts against the shoulder 54 of the firing pin 5 .

The relative relationship between the firing pin 5 and the gunpowder cartridge 9 in different states will be described below.

4 and 5, when the firing pin 5 does not fire the powder cartridge 9, the large outer diameter section 531 of the firing part 53 at the front end is accommodated in the large aperture section 411, and the small outer diameter section 532 is partially accommodated in the large aperture section 411 and The remaining parts are accommodated in the small diameter section 412 , and there is a distance between the small outer diameter section 532 and the gunpowder cartridge 9 .

It is worth mentioning that since the outer diameter of the rear end 91 of the powder cartridge 9 is larger than the minimum diameter of the front section 413 of the perforation 41 of the firing pin seat 4, and the outer diameter of the rear end 91 of the gunpowder cartridge 9 is slightly smaller than that of the front section 413 The largest aperture, so when the gunpowder nailer 2 stands upright with the front end, the powder cartridge 9 will be limited by the front section 413 and will not fall out; and when the gunpowder nailer 2 falls from a high place, the powder cartridge 9 The primer 92 will not hit the firing pin 5 to cause false firing, thereby improving the safety in use. Although in this embodiment, the outer diameter of the rear end 91 of the powder cartridge 9 is slightly smaller than the maximum aperture of the front section 413, it is not limited thereto, and the outer diameter of the rear end 91 of the powder cartridge 9 can also be equal to the maximum diameter of the front section 413. aperture.

Referring to Fig. 4 and Fig. 7, when the firing pin 5 fires the gunpowder cartridge 9, the small outer diameter section 532 of the firing portion 53 moves forward to hit and squeeze the primer 92 of the gunpowder cartridge 9 to cause an explosion, so that the primer 92 detonates the gunpowder The gunpowder 93 inside the cylinder explodes, and then drives the piston rod 24 to move forward.

In particular, because the outer diameter of the small outer diameter section 532 of the front end firing portion 53 of the firing pin 5 is between the inner diameter and the outer diameter of the primer 92 of the gunpowder cartridge 9, the front end firing portion 53 can be directly fired with a full circle. Impact the effective firing area of the primer 92 of the gunpowder cartridge 9 to explode the gunpowder 93 inside the powder cartridge, thereby increasing the firing rate.

To sum up, by virtue of the design that the outer diameter of the front end of the firing part 53 of the firing pin 5 is between the inner diameter and the outer diameter of the primer 92 of the powder cartridge 9, the firing part 53 of the front end can trigger the primer 92 of the powder cartridge 9 reliably. Improve the firing rate. In addition, the outer diameter of the rear end 91 of the powder cartridge 9 is larger than the minimum aperture diameter of the front section 413 of the perforation 41 of the firing pin seat 4, so that the powder cartridge 9 will not fall out or be fired by mistake, and the safety in use is improved. , and overall structure is also comparatively simple, so can really reach the purpose of this utility model.

Claims (14)

1. A gunpowder nailer for triggering a gunpowder cartridge, the gunpowder barrel has a rear end and an annular primer located at the rear end, the gunpowder nailer includes a hollow tubular body and a The firing device arranged in the body adjacent to the rear end; it is characterized in that the firing device includes: a firing pin seat, constrained to be located on the inner wall of the body, the firing pin seat has a perforation extending in the front-rear direction; and A firing pin, which can be displaced back and forth relative to the firing pin seat, is located behind the firing pin seat. The central axis is on the same straight line as the central axis of the gunpowder cartridge, and the outer diameter of the front end of the firing part is between the inner diameter and the outer diameter of the primer of the gunpowder cartridge. 2. The gunpowder nail driver according to claim 1, wherein the perforation of the firing pin seat has a front section, the diameter of the front section is tapered from front to back, and the outer diameter of the rear end of the powder cartridge is larger than Minimum aperture for this front section. 3. The powder nail driver according to claim 2, wherein the outer diameter of the rear end of the powder cartridge is equal to the maximum hole diameter of the front section. 4. The gunpowder nail driver according to claim 2, wherein the outer diameter of the rear end of the powder cartridge is slightly smaller than the maximum hole diameter of the front section. 5. The gunpowder nail driver according to claim 3, characterized in that, the firing part at the front end of the firing pin has a section with a large outer diameter, and a front end connected to the section with a large outer diameter and an outer diameter smaller than the large outer diameter. A small outer diameter section of the outer diameter of the section, the small outer diameter section triggers the powder cartridge primer, and the outer diameter of the small outer diameter section is between the inner diameter and the outer diameter of the powder cartridge primer. 6. The gunpowder nail driver as claimed in claim 4, characterized in that, the firing portion at the front end of the firing pin has a large outer diameter section, and a front end connected to the large outer diameter section with an outer diameter smaller than the large outer diameter. A small outer diameter section of the outer diameter of the section, the small outer diameter section triggers the powder cartridge primer, and the outer diameter of the small outer diameter section is between the inner diameter and the outer diameter of the powder cartridge primer. 7. The gunpowder nail driver as claimed in claim 5, characterized in that, the perforation of the firing pin base also has a small aperture section connected to the rear end of the front section and having a diameter equal to the minimum aperture of the front section, and a section connected to the The rear end of the small-aperture section and the large-aperture section whose aperture is larger than the aperture of the small-aperture section; The length in the direction is less than the axial length of the large aperture section, so that the large outer diameter section is accommodated in the large aperture section, and the small outer diameter section is partially accommodated in the large aperture section and the rest is accommodated in the large aperture section. The small aperture segment. 8. The gunpowder nail driver according to claim 6, characterized in that, the perforation of the firing pin seat also has a small aperture section connected to the rear end of the front section and having a diameter equal to the minimum aperture of the front section, and a section connected to the The rear end of the small-aperture section and the large-aperture section whose aperture is larger than the aperture of the small-aperture section; The length in the direction is less than the axial length of the large aperture section, so that the large outer diameter section is accommodated in the large aperture section, and the small outer diameter section is partially accommodated in the large aperture section and the rest is accommodated in the large aperture section. The small aperture segment. 9. The gunpowder nail driver according to any one of claims 1 to 8, characterized in that the firing pin further has a shaft portion extending in the front-rear direction and connected to the rear end of the firing portion at the front end, a A head connected to the rear end of the shaft part and exposed to the rear end of the body, and a shoulder part between the shaft part and the front firing part, the front firing part, the shaft part and the head are integral The connecting rod, the firing device also includes a locking part and an elastic element. Behind the seat, the elastic element is sleeved on the firing pin, one end of the elastic element abuts against the head of the firing pin and the other end is biased toward the engaging part to force the engaging part against the shoulder of the firing pin department. 10. The gunpowder nail driver according to claim 9, wherein the engaging part is recessed to form a notch for the engaging part to be sleeved on the shaft part in a radial direction. 11. The gunpowder nail driver according to claim 10, wherein the engaging part is roughly in the shape of a sheet. 12. The gunpowder nail driver according to claim 11, wherein the firing device further comprises a gasket set on the shaft part and interposed between the other end of the elastic element and the front firing part, The elastic element forces the engaging part against the shoulder of the firing pin through the washer. 13. The gunpowder nail driver as claimed in claim 12, characterized in that, the engaging member leans against the firing pin seat, and the body has a tube body and a handle set on the outside of the tube body. , the rear end of the tubular body is located in the handle, and the inner wall of the tubular body forms a first retaining edge and a second retaining edge spaced behind the first retaining edge and adjacent to the rear end of the tubular body, the striker The seat abuts against the first blocking edge and the gasket abuts against the second blocking edge to limit the firing pin seat and the engaging member on the inner wall of the main body. 14. The powder nail driver according to claim 13, wherein the second retaining edge is formed by local deformation of the rear end of the tubular body.

Images