CN215903448U

CN215903448U - Sliding guide structure of nailing gun firing pin

Info

Publication number: CN215903448U
Application number: CN202122034811.1U
Authority: CN
Inventors: 张华定
Original assignee: Taizhou Dingba Power Tools Co ltd
Current assignee: Taizhou Dingba Power Tools Co ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2022-02-25
Anticipated expiration: 2031-08-26

Abstract

The utility model provides a guide structure for sliding of a firing pin of a nailing gun, belonging to the technical field of machinery. It has solved how further extension nailing gun's life. The first piston capable of moving back and forth is arranged in the first cylinder, the firing pin is installed on the first piston and provided with a lock groove, a lock plate used for locking the firing pin is rotatably connected to the shell, the firing pin penetrates through a nail groove opening of the nail nozzle and enters the nail nozzle, a first baffle for guiding the firing pin is arranged on the shell, a first gap exists between the first baffle and the firing pin above the firing pin, and the first baffle is located above a notch of the lock groove when the firing pin is locked. Compared with the prior art, the guide structure of the scheme has the advantages that the first baffle enables the striker to play a role in preventing deformation for the striker in the motion process of the striker without being abraded due to friction, so that the nail shooting is normally carried out, the nailing gun is protected from being damaged in the nail shooting process, and the service life of the nailing gun is prolonged.

Description

Sliding guide structure of nailing gun firing pin

Technical Field

The utility model belongs to the technical field of machinery, relates to a nailing gun, and particularly relates to a guide structure for sliding of a firing pin of the nailing gun.

Background

The working principle of the pneumatic nail gun is that high-pressure gas generated by an air pump (an air compressor) is used as a power source, the high-pressure gas drives a firing pin in a cylinder of the nail gun to perform hammering movement, and the row nails in a row nail clamp are nailed into an object or ejected out. The gun body part comprises a gun body, a cylinder, a balance valve, a switch assembly, a firing pin assembly (gun tongue), a cushion pad, a gun nozzle, a nail groove and the like, and the firing pin (piston) is made to reciprocate in the cylinder by utilizing the pressure difference between compressed air and atmosphere through a trigger switch; the cartridge clip part is composed of parts such as a gun head, a gun cover, a fixed cartridge clip and a movable cartridge clip, the nail is conveyed into the nail groove through a pressure spring or a tension spring, and the nail is driven out after a firing pin impacts the nail in the nail groove. The pneumatic nailing gun mainly uses the double-cylinder nailing gun as the main part in the market at present, and the double-cylinder nailing gun is driven by adding a cylinder to generate high-pressure gas and a built-in power source on the basis of a single cylinder, and can move in any range. The firing pin in the nail gun is mainly designed in a flat shape, the firing pin is in a locking state when the nail shooting is not started, the power of the firing pin is derived from high-pressure gas when the nail shooting is started, the firing pin has large kinetic energy when moving, the firing pin and the nail can deform in all directions after being contacted, once the firing pin deforms in the moving process, the structure of the nail gun can be damaged, even a user can be injured, and certain potential safety hazards exist.

In this prior art, it is considered to limit the movement of the striker. The limit structure, as disclosed in chinese patent publication No. CN111546292A, discloses a locking device for a striker of an electric nail gun, the guide structure includes a limit plate screwed to the upper end of a positioning screw, the limit plate is located above the striker; a rear guide plate attached to the guide surface is arranged on one side, opposite to the limiting plate, of the outer wall of the gear box, and a front guide plate attached to the side wall of the front side of the positioning tooth is arranged at one end of the limiting plate; the lower end surface of the front guide plate is attached to the upper surface of the firing pin; the upper part of the positioning screw is provided with a backing plate positioned on the lower surface of the firing pin, and the upper surface of the backing plate is provided with a guide sleeve attached to the side wall of the firing pin.

The structure plays a certain limiting role in the movement of the firing pin, but in the actual use process, because the firing pin is respectively attached to the front guide plate and the guide sleeve, when the firing pin moves at a high speed, the firing pin generates a large friction force with the front guide plate and the guide sleeve, the wear of the firing pin can be serious, the rigidity of the firing pin is weakened, and therefore deformation occurs, the nail gun cannot fire nails, and the nail gun needs to be frequently replaced and maintained.

Disclosure of Invention

The utility model aims to provide a guide structure for sliding of a firing pin of a nailing gun aiming at the problems in the prior art, and the technical problems to be solved by the utility model are as follows: how to further prolong the service life of the nailing gun.

The purpose of the utility model can be realized by the following technical scheme: the utility model provides a gliding guide structure of nailing gun firing pin, the nailing gun includes casing and first cylinder, but be equipped with reciprocating motion's first piston in the first cylinder, install the firing pin on the first piston, the firing pin is equipped with the locked groove, rotate on the casing and be connected with the locking piece that is used for pinning the firing pin, the firing pin passes in the nail groove mouth entering nail mouth of nail mouth, its characterized in that, be equipped with the piece that plays the guide effect to the firing pin on the casing, the piece be located the firing pin top and with there is clearance one between the firing pin, when the firing pin locking, the piece is located the notch of locked groove directly over or oblique top.

The working principle of the scheme is that the firing pin has a notch at the position where the lock groove is arranged, so that the rigidity of the position is low, when the firing pin is in a locking state, the pressure of high-pressure gas on the first piston is mainly balanced by the pressure of the locking piece on the lock groove, so that the firing pin is likely to deform at the position, when the firing pin is locked, the blocking piece is positioned right above the lock groove, so that the deformation of the firing pin can be effectively prevented, the smooth motion of the firing pin can be ensured, and meanwhile, the blocking piece plays a limiting role on the locking piece, so that the locking effect of the locking piece on the firing pin is better; a first gap exists between the blocking piece and the firing pin, and the blocking piece does not contact with the firing pin when moving when the firing pin fires the nail, so that the firing pin is prevented from being abraded; when the firing pin fires the nail, the locking piece does not block the locking groove after rotating, the first piston in the first cylinder drives the firing pin to strike the nail under the action of high-pressure gas, and the firing pin has larger kinetic energy at the moment, so that the firing pin is easy to deform when the nail is nailed in the nail gun, even the firing pin is broken due to excessive deformation; the blocking member is located diagonally above the lock slot, which herein is meant to include situations where it intersects or does not intersect the lock slot, and also prevents deformation of the striker since the rigidity of the striker in the vicinity of the lock slot is still low.

In the above-mentioned guide structure for sliding the striker of the nailing gun, the blocking member includes the first blocking plate, and the width of the first blocking plate is greater than that of the lock groove.

In the sliding guide structure of the nailing gun firing pin, the casing is provided with the lock column, the locking piece is rotatably connected to the lock column, the firing pin is provided with at least one reinforcing strip, the first baffle and the lock column arranged on the casing are fixedly connected and are positioned above the reinforcing strip, and a first gap is formed between the first baffle and the reinforcing strip. The reinforcing strip is used for increasing the rigidity of the firing pin to prevent the firing pin from deforming, the first baffle is arranged above the reinforcing strip to prevent the reinforcing strip from deforming, and the first baffle prevents the reinforcing strip from being worn, so that the rigidity of the firing pin is prevented from being reduced.

In the guide structure for the sliding of the firing pin of the nailing gun, the locking piece is provided with a lock head matched with the lock groove, when the firing pin is locked by the locking piece, the lock head is clamped in the lock groove, and the first baffle plate is positioned above the lock head.

In the guide structure for the sliding of the firing pin of the nailing gun, the blocking piece comprises a second baffle, a first fixing column is arranged on the shell and is positioned above the firing pin, a second baffle fixedly connected to the fixing column is arranged above the reinforcing strip, and a second gap for preventing the reinforcing strip from deviating exists between the second baffle and the reinforcing strip. The second baffle is arranged above the reinforcing strip to prevent the reinforcing strip from deforming, and the second gap prevents the reinforcing strip from being abraded and prevents the rigidity of the firing pin from being reduced.

In the above-mentioned guide structure for the sliding of the striker of the nailing gun, the cross section of the second baffle is L-shaped. The cross section of the baffle II is L-shaped, and the guide area can be increased to play a better guide role on the striker relative to the cross section which is I-shaped.

In the guide structure for the sliding of the firing pin of the nailing gun, the lower end of the second baffle is provided with a groove, and the reinforcing strip slides in the groove and is not contacted with the inner wall of the groove. Strengthen the strip and slide in the recess and not contact with the recess inner wall, the recess is to strengthening the strip along its radial up, and turn left or turn right and can both play the effect of preventing deformation.

In the above-described guide structure for sliding the striker of the nailing gun, the housing is provided with a guide post which abuts against a side portion of the striker and has a gap with the side portion of the striker, and a boss which is located above the striker and has a gap with an upper surface of the striker is further provided above the guide post. The guide post plays a role in preventing deformation of the side part and the upper part of the striker, so that the movement of the striker is smoothly carried out.

In the guide structure for the sliding of the firing pin of the nailing gun, the blocking piece comprises a third blocking plate, and the third blocking plate is fixed on the shell through a second fixing column. In the guide structure for sliding the firing pin of the nailing gun, the nail groove opening of the nail nozzle is matched with the firing pin provided with the reinforcing strip.

Compared with the prior art, the utility model has the following advantages:

1. compared with the prior art, the guide structure of the scheme has the advantages that the blocking piece enables the striker to play a role in preventing deformation to the striker in the movement process of the striker without being abraded by friction, so that the nail shooting is normally carried out, the nailing gun is protected from being damaged in the nail shooting process, and the service life of the nailing gun is prolonged.

2. In the scheme, the first baffle plate is arranged on the lock column and positioned on the locking piece, so that the deformation of the firing pin can be effectively prevented, the smooth motion of the firing pin can be ensured,

drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic illustration of an explosive structure of the present invention;

FIG. 3 is a perspective view of a portion of the structure of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3;

FIG. 5 is a schematic perspective view of the second embodiment;

FIG. 6 is a schematic diagram of an exploded structure of the second embodiment;

FIG. 7 is a schematic sectional view showing the second embodiment;

FIG. 8 is a schematic perspective view of a third embodiment;

FIG. 9 is a schematic sectional view showing the third embodiment.

In the figure, 1, a housing; 2. a first cylinder; 3. a first piston; 4. a striker; 4a, locking grooves; 4b, reinforcing strips; 5. fixing a first column; 51. fixing a second column; 6. a first baffle plate; 61. a second baffle plate; 61a, a groove; 62. a baffle III; 7. a first gap; 71. a second gap; 72. a third gap; 73. a fourth gap; 74. a fifth gap; 75. a sixth gap; 8. a guide post; 8a, a boss; 9. a lock cylinder; 10. a locking member; 10a, a lock head; 11. nailing a mouth; 11a and a nail notch.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1 and 2, the nailing gun structure includes a housing 1 and a first cylinder 2, a first piston 3 capable of reciprocating is arranged in the first cylinder 2, a striker 4 is mounted on the first piston 3, the striker 4 reciprocates along with the first piston 3 in the axial direction, a lock groove 4a is formed in the striker 4, a lock cylinder 9 is arranged on the housing 1, a locking member 10 for locking the striker 4 is rotatably connected to the lock cylinder 9, a locking head 10a matched with the lock groove 4a is arranged on the locking member 10, and when the locking member 10 locks the striker 4, the locking head 10a is clamped into the lock groove 4 a. The striker 4 is further provided with a reinforcing strip 4b for enhancing the rigidity thereof, and the number of the reinforcing strips 4b is at least one, and the number of the reinforcing strips 4b is two in the present embodiment.

As shown in fig. 2, 3 and 4, a blocking member is further disposed above the striker 4, in this embodiment, the blocking member is a first blocking plate 6, the first blocking plate 6 is fixedly connected to the lock cylinder 9 and is located above the locking member 10, a first gap 7 exists between the first blocking plate 6 and the striker 4, an upper surface of the locking member 10 is higher than an upper surface of the reinforcing strip 4b, and a first gap 7 also exists between the first blocking plate 6 and the reinforcing strip 4 b. The nailing gun further comprises a nail mouth 11, a nail notch 11a matched with the structure of the firing pin 4 comprising the reinforcing strip 4b is arranged on the nail mouth 11, a gap six 75 exists between the nail notch 11a and the reinforcing strip 4b, and when the firing pin 4 is locked, the front end of the firing pin 4 penetrates through the nail notch 11a of the nail mouth 11 and is positioned in the nail mouth 11. The casing 1 of the nail gun is also provided with a guide post 8, the guide post 8 and a lock post 9 are respectively positioned at two sides of the firing pin 4, the guide post 8 is abutted against the side part of the firing pin 4, a gap III 72 is formed between the guide post 8 and the side part of the firing pin 4, a boss 8a is also arranged above the guide post 8, and the boss 8a is positioned above the firing pin 4 and has a gap IV 73 between the boss 8a and the upper surface of the firing pin 4.

When the nailing gun is locked, because the firing pin 4 has the breach in setting up keyway 4a department, therefore this position rigidity is lower, when the firing pin 4 is in the locking state, first piston 3 receives high-pressure gas's pressure mainly to come the equilibrium through tapered end 10a to the pressure of keyway 4a, consequently the firing pin 4 takes place the deformation easily in this department, baffle 6 sets up on the lock post 9 and is located the notch top of keyway 4a, the width of baffle 6 is greater than the width of keyway 4a, baffle 6 can effectively prevent the deformation or excessive deformation of firing pin 4, can guarantee that the firing pin 4 motion goes on smoothly.

When the nailing gun works, the locking piece 10 rotates around the lock column 9 on the shell 1, the tapered end 10a is disengaged from the lock groove 4a of the firing pin 4, the first piston 3 in the first cylinder 2 drives the firing pin 4 to move out of the first cylinder 2 under the action of high-pressure gas, when the striker 4 is deformed, the reinforcing strip 4b is deformed and contacts the baffle 6 and then restores to deform to a certain degree, and a first gap 7 exists between the first baffle 6 and the striker 4, so that the striker 4 is not worn by friction, when the firing pin 4 deforms to the left or the right, the guide column 8 and the lock column 9 also enable the firing pin 4 to restore the deformation to a certain degree, the first baffle 6, the lock column 9 and the guide column 8 play a certain role in guiding the movement of the firing pin 4, so that the nail shooting is normally carried out, the structure of the nailing gun is protected from being damaged in the nail shooting process, and the service life of the nailing gun is prolonged.

Example two

As shown in fig. 5, 6 and 7, the nailing gun structure includes a housing 1 and a first cylinder 2, a first piston 3 capable of reciprocating is arranged in the first cylinder 2, a striker 4 is mounted on the first piston 3, the striker 4 reciprocates along with the first piston 3 in the axial direction, a lock groove 4a is formed on the striker 4, a lock cylinder 9 is arranged on the housing 1, a locking member 10 for locking the striker 4 is rotatably connected to the lock cylinder 9, a lock head 10a matched with the lock groove 4a is arranged on the locking member 10, and when the striker 4 is locked by the locking member 10, the lock head 10a is clamped into the lock groove 4 a. The structure of the nail tip and the like in this embodiment is not shown. The blocking piece in the second embodiment adopts a structure of a second baffle 61, the guide structure comprises a first fixing column 5 which is arranged on the shell 1 and located above the striker 4, the first fixing column 5 is connected with the shell 1 through threads, a second baffle 61 which is fixedly connected to the first fixing column 5 is arranged above the reinforcing strip 4b, a second gap 71 for deformation of the reinforcing strip 4b exists between the second baffle 61 and the reinforcing strip 4b, the cross section of the second baffle 61 is L-shaped, a groove 61a is formed in the lower end of the second baffle 61, and the reinforcing strip 4b slides in the groove 61a and does not contact with the inner wall of the groove 61 a.

EXAMPLE III

As shown in fig. 8 and 9, the nailing gun structure includes a housing 1 and a first cylinder 2, a first piston 3 capable of reciprocating is provided in the first cylinder 2, a striker 4 is provided on the first piston 3, the striker 4 reciprocates along with the first piston 3 in the axial direction, a lock groove 4a is provided on the striker 4, a lock cylinder 9 is provided on the housing 1, a locking member 10 for locking the striker 4 is rotatably connected to the lock cylinder 9, a locking head 10a matched with the lock groove 4a is provided on the locking member 10, and when the locking member 10 locks the striker 4, the locking head 10a is locked in the lock groove 4 a. The structure of the nail tip and the like in this embodiment is not shown. The blocking piece in the third embodiment adopts a structure of a third blocking plate 62, the third blocking plate 62 is positioned obliquely above the locking groove 4a, the third blocking plate 62 is fixedly connected to the second fixing column 51, the cross section of the third blocking plate 62 is Z-shaped, and a gap five 74 is formed between the third blocking plate 62 and the upper side and the side surface of the firing pin 4. Regarding the structure of the blocking member, this embodiment can be combined with the first embodiment and the second embodiment, or combined with the first embodiment and the second embodiment, respectively.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Although 1, the housing is used more herein; 2. a first cylinder; 3. a first piston; 4. a striker; 4a, locking grooves; 4b, reinforcing strips; 5. fixing a first column; 51. fixing a second column; 6. a first baffle plate; 61. a second baffle plate; 61a, a groove; 62. a baffle III; 7. a first gap; 71. a second gap; 72. a third gap; 73. a fourth gap; 74. a fifth gap; 75. a sixth gap; 8. a guide post; 8a, a boss; 9. a lock cylinder; 10. a locking member; 10a, a lock head; 11. nailing a mouth; 11a, nail slots, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. The utility model provides a gliding guide structure of nailing gun firing pin, the nailing gun includes casing (1) and first cylinder (2), but be equipped with reciprocating motion's first piston (3) in first cylinder (2), install firing pin (4) on first piston (3), firing pin (4) are equipped with locked groove (4a), rotate on casing (1) and be connected with locking piece (10) that are used for pinning firing pin (4), firing pin (4) pass nail notch (11a) entering nail mouth (11) of nail mouth (11) in, its characterized in that, be equipped with the piece that plays the guide effect to firing pin (4) on the casing, the piece is located firing pin (4) top and with there is clearance one (7) between firing pin (4), and when firing pin (4) lock, the piece is located the notch of locked groove (4a) directly over or oblique top.

2. The striker slide guide structure for a nailing gun according to claim 1 wherein said stopper member comprises a first shutter (6), and the width of the first shutter (6) is larger than the width of the lock groove (4 a).

3. A guide structure for sliding of a striker of a nailing gun according to claim 2 wherein a lock cylinder (9) is provided on the housing, the locking member (10) is rotatably connected to the lock cylinder (9), at least one reinforcing strip (4b) is provided on the striker (4), the first striker plate (6) and the lock cylinder (9) are fixedly connected and located above the reinforcing strip (4b), and a first gap (7) is provided between the first striker plate (6) and the reinforcing strip (4 b).

4. The guide structure for sliding of a striker of a nailing gun according to claim 3 wherein a locking head (10a) is provided on the locking member (10) to be fitted into the lock groove (4a), the locking head (10a) is engaged into the lock groove (4a) when the locking member (10) locks the striker (4), and the first striker (6) is located above the locking head (10 a).

5. The guide structure for the sliding of the firing pin of the nailing gun according to claim 1 or 2, wherein the blocking piece comprises a second blocking piece (61), a first fixing column (5) is arranged on the housing (1), the first fixing column (5) is positioned above the firing pin (4), at least one reinforcing strip (4b) is arranged on the firing pin (4), the second blocking piece (61) fixedly connected to the first fixing column (5) is arranged above the reinforcing strip (4b), and a second gap (71) exists between the second blocking piece (61) and the reinforcing strip (4 b).

6. The nailing gun striker slide guide structure according to claim 5, wherein the second striker (61) is L-shaped in cross section.

7. The guide structure for sliding of the firing pin of a nailing gun as claimed in claim 6, wherein the second baffle (61) is provided at a lower end thereof with a groove (61a), and the reinforcement strip (4b) slides in the groove (61a) without contacting with an inner wall of the groove (61 a).

8. The guide structure for sliding of the striker of a nailing gun according to claim 1, 4 or 7, wherein the housing (1) is provided with a guide post (8), the guide post (8) abuts against the side of the striker (4) and has a gap of three (72) with the side of the striker (4), a boss (8a) is further provided above the guide post (8), and the boss (8a) is positioned above the striker (4) and has a gap of four (73) with the upper surface of the striker (4).

9. The guide structure for slide of striker of nailing gun according to claim 8 wherein said stopper comprises a third retainer (62), said third retainer (62) being fixed to said housing (1) by a second fixing post (51).

10. The nailing gun striker slide guide structure according to claim 9, wherein the nail notch (11a) of the nail mouth (11) is fitted to the striker (4) provided with the reinforcing strip (4 b).