Safe axial nail shooting device

Abstract

The invention discloses a safe and safe axial nail shooting device, which relates to the technical field of nail shooting fastening and comprises a main sleeve, and a safety device capable of rotating around the main sleeve to lock or unlock a limiting pin is arranged at the front end of an axial limiting groove on the main sleeve; s1, when the safety device is controlled to rotate to a locking state, a limiting pin is located at the front end of an axial limiting groove and locked by a safety groove of the safety device, and the nail shooting device is in a non-shooting state; and S2, when the safety device is controlled to rotate to an unlocking state, the limiting pin is located in the axial limiting groove and a receding notch of the safety device and is unlocked, and the nail shooting device is in a percussion state. According to the nail shooting device, the safety device is additionally arranged on the main sleeve, the limiting pin can be locked by rotating the safety device before a dud is withdrawn, the nail shooting device cannot be fired, no matter how the dud is withdrawn, the integrated nail cannot be detonated again, and the technical problem that an existing nail shooting device is prone to hurting people when the dud is withdrawn is solved.

Description

Technical Field

[0001] The invention relates to the technical field of nail fastening, and in particular to a safety axial nail shooter. Background Art

[0002] A nail shooter is a fastening tool that uses a firing pin to fire an integrated nail and uses the thrust generated by the explosion of the integrated nail to quickly drive the nail into the base. With the development of nail fastening technology, nail shooters are becoming more and more widely used in various industries due to their advantages such as light weight, good fastening effect and easy use.

[0003] At present, nail shooters on the market are usually mainly axial structures. For example, the patent document with publication number CN109940557A discloses an axial nail shooter with fast shell ejection. This type of nail shooter mainly includes a main sleeve, a movable sleeve, a nail tube, a firing pin body (including a needle rod part and a needle seat part), a firing pin sleeve, a brake pin (firing pin), a limit pin (cylindrical pin), a spring and other structural parts, and the limit pin is inserted into the positioning pin hole provided in the firing pin body, the strip hole symmetrically provided in the firing pin sleeve and the axial limit groove symmetrically provided on the rear section of the main sleeve to achieve axial movement limitation of the firing pin body, thereby ensuring that the nail shooter can be fired stably and reliably. However, in the actual use of the nail shooter, due to various reasons, there will be a dud situation where the integrated nail is not fired, that is, the nail bullet on the integrated nail is not detonated in the nail tube. At this time, if the main sleeve pushes the firing pin body to move into the nail tube to eject the dud, when the firing pin touches the integrated nail, the nail bullet may be detonated, resulting in a safety hazard that is easy to injure people. Summary of the invention

[0004] The present invention aims at the potential safety hazard that existing nail shooters are prone to re-detonation and injuring people when encountering a dud shell ejection, and provides a safety-safe axial nail shooter. The nail shooter adds a safety device on the main sleeve, and can lock the limit pin by rotating the safety device before encountering a dud shell ejection, so that the firing pin body, the brake pin and the firing pin sleeve are all locked and cannot move. In this way, no matter how the shell is ejected, the integrated nail cannot be detonated again, ensuring the safety when the dud shell is ejected, and solving the technical problem that the existing nail shooter is prone to injuring people when encountering a dud shell ejection.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] A safety axial nail shooter, comprising a main sleeve, wherein the main sleeve is provided with a safety device at the front end of the axial limit groove, which can rotate around the main sleeve to realize the locking state or unlocking state of the limit pin;

[0007] S1: When the safety device is controlled to rotate to the locked state, the limit pin is located at the front end of the axial limit slot and is locked by the safety slot of the safety device, the firing pin body, the brake pin and the firing pin sleeve are all locked and cannot move, and the nail shooter is in a state where it cannot fire;

[0008] S2: When the safety device is controlled to rotate to the unlocked state, the limit pin is located in the axial limit groove and the clearance notch of the safety device and is unlocked, the limit pin can move in the axial limit groove, and the nail shooter is in a firing state.

[0009] The safety groove and the clearance notch are symmetrically arranged on the side wall of the safety device. When the safety device is rotated to a locked state, the clearance notch is misaligned with the axial limit groove, and the two ends of the limit pin are respectively locked at the front end of the axial limit groove by the safety groove; when the safety device is rotated to an unlocked state, the clearance notch is communicated with the axial limit groove, and the safety device releases the lock on the limit pin.

[0010] The safety device comprises an integrally formed front rotating ring and a rear safety ring, a safety groove is arranged on the rear safety ring, and a clearance notch is arranged on the end surface of the rear safety ring and is located at one end of the safety groove.

[0011] The outer diameter of the front rotating ring is greater than that of the rear safety ring. An outer step is arranged between the front rotating ring and the rear safety ring. The protective sleeve of the nail shooter is arranged between the outer step and the connecting handle. The rear safety ring is arranged inside the front end of the protective sleeve.

[0012] The front rotating ring is a conical structure, a curved surface structure, an annular structure or a structure combining a conical shape and an annular shape, and the rear safety ring is an annular structure.

[0013] The main sleeve includes a front sleeve and a rear sleeve. The outer diameter of the front sleeve is larger than that of the rear sleeve. There is an outer step between the front sleeve and the rear sleeve. The axial limit groove is located on the rear sleeve. The front end of the axial limit groove refers to the connection between the front sleeve and the rear sleeve. An inner step matched with the outer step is provided between the front rotating ring and the rear safety ring. The front rotating ring and the rear safety ring are respectively located on the front sleeve and the rear sleeve.

[0014] The rear end of the front sleeve is provided with an annular groove, and a positioning pin with an end extending into the annular groove is fixed on the front rotating ring.

[0015] A retractable ball is provided at the end of the positioning pin, and a locking positioning hole and an unlocking positioning hole matched with the retractable ball are respectively provided at the bottom of the annular groove. Driven by the safety device, the positioning pin can slide between the locking positioning hole and the unlocking positioning hole; and in the locked state, the retractable ball is located in the locking positioning hole, and the locking positioning hole and the retractable ball cooperate to position the safety device; in the unlocked state, the retractable ball is located in the unlocking positioning hole, and the unlocking positioning hole and the retractable ball cooperate to position the safety device.

[0016] The extended lines of the axes of the locking positioning hole and the unlocking positioning hole form an angle of 30-60 degrees.

[0017] The positioning pins are symmetrically fixed on the front rotating ring through a threaded connection structure, and the number of the locking positioning holes and the number of the unlocking positioning holes are the same as the number of the positioning pins.

[0018] The locking positioning hole and the unlocking positioning hole are both hemispherical surfaces or conical surfaces.

[0019] The advantages of adopting the present invention are:

[0020] 1. The key innovation of the present invention is that a safety device capable of locking and unlocking the limit pin is added to the main sleeve. When a dud needs to be ejected during use, the safety device can be turned to the locked state. The safety device can lock the limit pin at the front end of the axial limit groove and cannot move. Correspondingly, the firing pin body, the brake pin, and the firing pin sleeve are all locked and cannot move. At this time, the nail shooter is in a state where it cannot fire. No matter how the shell is ejected, the integrated nail cannot be detonated again, ensuring the safety of the dud shell ejection and avoiding the risk of injury. After the dud shell is ejected, it is only necessary to turn the safety device to the unlocked state to release the locking restriction of the limit pin. At this time, the limit pin can move normally in the axial limit groove, the nail shooter is in a firing state, and can normally fire the integrated nail. The locking and unlocking of the limit pin of the present invention only requires rotating the safety device, which has the advantages of simple structure, convenient operation, and strong practicality.

[0021] 2. The symmetrically designed safety slot of the present invention enables the safety device to lock the limit pin from both ends, thereby improving the stability and reliability of the locking. If only a single safety slot is provided, not only is the stability poor, it is easy to cause damage to the safety slot, but also the limit structure of the nail shooter is easily damaged.

[0022] 3. The present invention divides the safety device into a front rotating ring and a rear safety ring, and makes the outer diameter of the front rotating ring larger than the outer diameter of the rear safety ring, which is convenient for the rotation adjustment of the safety device and the positioning and installation of the nail shooter protective cover, and is also conducive to hiding the rear safety ring, the safety groove and the clearance gap in the protective cover.

[0023] 4. The present invention can set the front rotating ring to a conical structure, a curved structure, an annular structure or a structure combining a conical and annular structure, and set the rear safety ring to an annular structure, which has the advantages of conforming to ergonomics of the palm of the hand, being easy to operate and having a beautiful appearance.

[0024] 5. The present invention helps prevent the safety device from falling out of the front cover in the unlocked state by cooperating with the outer step and the inner step.

[0025] 6. The present invention can play a guiding role when the safety device rotates through the cooperation of the annular groove and the positioning pin, so that the rotation of the safety device is more stable, flexible and accurate.

[0026] 7. The present invention can position the safety device in the locked state and the unlocked state respectively through the cooperation of the retractable wave ball, the locking positioning hole and the unlocking positioning hole. That is, when the retractable wave ball on the positioning pin enters the locking positioning hole or the unlocking positioning hole, the safety device will be positioned and cannot rotate freely. This structure not only improves the stability and reliability of the safety device in the locked state and the unlocked state, but also prevents the safety device from failing to lock or unlock due to accidental sliding. At the same time, when the safety device rotates, the retractable wave ball is compressed, which does not affect the normal rotation of the safety device.

[0027] 8. The present invention sets the angle between the axis extension lines of the locking positioning hole and the unlocking positioning hole to 30-60 degrees, which is conducive to the state switching of the safety device under the premise of rotating at a smaller angle, thereby making the locking and unlocking operations of the nail shooter more convenient.

[0028] 9. The present invention is beneficial to further improve the stability of guidance through symmetrical positioning pins.

[0029] 10. The present invention sets the locking positioning hole and the unlocking positioning hole as hemispherical surfaces or conical surfaces, which is conducive to accurately compressing the retractable wave ball when controlling the rotation of the safety device, so that the safety device can be rotated with less force. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the planar structure of the safety device in a locked state;

[0031] Figure 2 for Figure 1 AA cross-sectional structural diagram;

[0032] Figure 3 It is a schematic diagram of the three-dimensional structure of the safety device in a locked state;

[0033] Figure 4 It is a schematic diagram of the planar structure of the safety device in the unlocked state;

[0034] Figure 5 for Figure 4 BB cross-sectional structure diagram;

[0035] Figure 6 is a schematic diagram of the three-dimensional structure of the safety device in the unlocked state;

[0036] Figure 7 It is a schematic diagram of the main plan structure of the safety device;

[0037] Figure 8 for Figure 7 Schematic diagram of CC cross-sectional structure;

[0038] Fig. 9 It is a right-side plan view of the structure of the safety device;

[0039] Fig.10 It is a schematic diagram of the left-side plan structure of the safety device;

[0040] Fig.11 It is a three-dimensional structural schematic diagram of the safety device (I);

[0041] Fig.12 It is a three-dimensional structural schematic diagram of the safety device (II);

[0042] Fig.13 This is a schematic diagram of the plane structure of the main set;

[0043] Fig.14 for Fig.13 DD cross-sectional structure diagram;

[0044] Fig.15 for Fig.13 EE cross-sectional structure diagram;

[0045] Fig.16 A schematic diagram of the three-dimensional structure of the main set;

[0046] Fig.17 It is a schematic diagram of the planar assembly structure of the nail shooter;

[0047] Fig.18 It is a schematic diagram of the three-dimensional assembly structure of the nail shooter;

[0048] Fig.19 It is a schematic diagram of the three-dimensional structure of the nail shooter after assembly;

[0049] Fig. 20 It is a structural schematic diagram of the nail shooter in an unlocked state;

[0050] Fig.21 for Fig. 20 FF cross-sectional structure diagram;

[0051] Fig. 22 for Fig.21 Schematic diagram of the GG cross-sectional structure;

[0052] Fig.23 It is a structural schematic diagram of the nail shooter in a locked state;

[0053] Fig.24 for Fig.23 Schematic diagram of the cross-sectional structure of JJ;

[0054] Fig.25for Fig.24 Schematic diagram of the KK cross-sectional structure.

[0055] Markings in the figure are: 1. main sleeve, 2. axial limit groove, 3. safety device, 4. limit pin, 5. safety groove, 6. make way notch, 7. front rotating ring, 8. rear safety ring, 9. inner step, 10. outer step, 11. ring groove, 12. unlocking positioning hole, 13. locking positioning hole, 14. positioning pin, 15. silencer sleeve assembly, 16. nail tube sleeve, 17. firing pin sleeve, 18. movable sleeve, 19. return spring, 20. firing pin body, 21. protective sleeve, 22. firing spring, 23. brake pin, 24. connecting handle, 25. grip, 26. front sleeve, 27. rear sleeve. DETAILED DESCRIPTION

[0056] The present invention will be further described below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention, but are not used to limit the present invention.

[0057] Example 1

[0058] like Figure 1-19 As shown, this embodiment provides a safety-safety axial nail shooter, the safety-safety structure includes a main sleeve 1, the main sleeve 1 includes a front sleeve 26 and a rear sleeve 27, the outer diameter of the front sleeve 26 is larger than the outer diameter of the rear sleeve 27, there is an outer step 10 between the front sleeve 26 and the rear sleeve 27, the rear sleeve 27 is provided with an axial limit groove 2, and a limit pin 4 penetrating the firing pin sleeve 17 and the firing pin body 20 is provided in the axial limit groove 2. Crucially, a safety device 3 is provided at the front end of the axial limit groove 2 on the main sleeve 1, which can rotate around the main sleeve 1 to realize the locking state or unlocking state of the limit pin 4; wherein,

[0059] S1: When the safety device 3 is controlled to rotate to the locked state, the limit pin 4 is located at the front end of the axial limit slot 2 and is locked by the safety slot 5 of the safety device 3. At this time, the firing pin body 20, the brake pin 23, and the firing pin sleeve 17 are all locked and cannot move, and the nail shooter is in a state where it cannot fire;

[0060] S2: When the safety device 3 is controlled to rotate to the unlocked state, the limit pin 4 is located in the axial limit groove 2 and the clearance notch 6 of the safety device 3 and is unlocked. At this time, the limit pin 4 can move in the axial limit groove 2, the firing pin body 20, the brake pin 23, and the firing pin sleeve 17 are all unlocked and movable, and the nail shooter is in a firing state.

[0061] Those skilled in the art can understand that the front end of the aforementioned axial limiting groove 2 refers to the connection between the front sleeve 26 and the rear sleeve 27 close to the front end of the axial limiting groove 2 .

[0062] This embodiment can switch between the locked state and the unlocked state by controlling the rotation of the safety device 3, thereby realizing the switching between the firing state and the non-firing state of the nail shooter. When encountering a dud, it is only necessary to rotate the safety device 3 to the locked state, so that the limit pin 4, the firing pin body 20, the brake pin 23, and the firing pin sleeve 17 are all locked and cannot move. At this time, no matter how the shell is ejected, the integrated nail cannot be detonated again, ensuring the safety of the dud shell ejection. After the shell is ejected, it is only necessary to rotate the safety device 3 to the unlocked state to release the lock of the safety device 3 on the limit pin 4. At this time, the limit pin 4, the firing pin body 20, the brake pin 23, and the firing pin sleeve 17 can all move normally, and the nail shooter can fire the nail bullet normally.

[0063] According to a preferred implementation of this embodiment, Figure 1-12 As shown, the safety groove 5 and the clearance notch 6 are symmetrically arranged on the side wall of the safety device 3, and the safety groove 5 is in communication with the clearance notch 6, and the width of the clearance notch 6 is equal to or slightly larger than the width of the axial limit groove 2. When the safety device 3 is rotated to the locked state, the clearance notch 6 is misaligned with the axial limit groove 2, and the clearance notch 6 is not in communication with the axial limit groove 2. At this time, the two ends of the limit pin 4 are respectively locked by the safety groove 5 at the front end of the axial limit groove 2, and the limit pin 4 cannot move in the axial limit groove 2. When the safety device 3 is rotated to the unlocked state, the clearance notch 6 is in communication with the axial limit groove 2, and the safety device 3 releases the lock on the limit pin 4, and the limit pin 4 can move in the axial limit groove 2.

[0064] It should be noted that the present embodiment does not limit the specific structure of the safety device 3, and any related structural member that can cooperate with the limit pin 4 and achieve the above functions can be used.

[0065] like Figure 17-19 As shown, the above-mentioned nail shooter also includes structural parts such as a silencer sleeve assembly 15, a nail tube sleeve 16, a firing pin sleeve 17, a movable sleeve 18, a reset spring 19, a firing pin body 20, a protective sleeve 21, a firing spring 22, a connecting handle 24, a grip 25, and a brake pin 23. The structure, position and connection relationship of the above-mentioned components are all existing conventional technologies and will not be repeated here.

[0066] The implementation principle of this embodiment is:

[0067] When the nail gun encounters a dud during firing and needs to eject the shell, Figure 1-3As shown in 23-25, first control the safety device 3 to rotate to the locking state, so that the clearance notch 6 is misaligned with the axial limit groove 2. At this time, the clearance notch 6 is not connected to the axial limit groove 2, and the safety device 3 locks the limit pin 4 at the front end of the axial limit groove 2 through the safety groove 5. Correspondingly, the firing pin body 20, the brake pin 23, and the firing pin sleeve 17 are all locked and cannot move. The brake pin 23 cannot contact the firing surface, the firing pin cannot be released, and the nail shooter is in a state where it cannot fire. At this time, no matter what method is used to extract the shell, the integrated nail in the nail tube cannot be detonated again, ensuring the safety of the dud shell extraction and avoiding the risk of injury. When the dud shell is extracted, as shown in FIG. Figure 4-6 As shown in 20-22, first control the safety device 3 to rotate to the unlocked state, so that the clearance gap 6 is connected with the axial limit groove 2. At this time, the safety device 3 releases the lock on the limit pin 4, and the limit pin 4, the firing pin body 20, the brake pin 23, and the firing pin sleeve 17 can all move normally. The nail shooter is in a firing state and can fire the nail bullet normally.

[0068] Example 2

[0069] This embodiment further optimizes the safety structure of the nail shooter based on the first embodiment.

[0070] like Figure 7-12 As shown, the safety device 3 includes an integrally formed front rotating ring 7 and a rear safety ring 8, which are respectively located on the front sleeve 26 and the rear sleeve 27, and an inner step 9 matched with the outer step 10 on the main sleeve 1 is provided between the front rotating ring 7 and the rear safety ring 8. When installed, the safety device 3 can be sleeved on the main sleeve 1 from the rear end of the rear sleeve 27 forward, and under the cooperation and limiting action of the outer step 10 and the inner step 9, the axial forward movement of the safety device 3 can be limited and it can be fallen out of the front sleeve 26, thereby ensuring that the safety device 3 is more stable on the main sleeve 1. The outer diameter of the front rotating ring 7 is larger than the outer diameter of the rear safety ring 8, and the outer diameter of the rear safety ring 8 is matched with the inner diameter of the protective cover 21 on the nail shooter. An outer step 10 is formed between the front rotating ring 7 and the rear safety ring 8. The protective cover 21 of the nail shooter is arranged between the outer step 10 and the connecting handle 24. The rear safety ring 8 is arranged inside the front end of the protective cover 21. After the nail shooter is assembled, the rear safety ring 8 and the safety groove 5 and the clearance gap 6 thereon are all located in the protective cover 21.

[0071] Furthermore, the safety groove 5 is formed on the rear safety ring 8 , and the clearance notch 6 is formed on the end surface of the rear safety ring 8 and located at one end of the safety groove 5 , so that the state switching of the safety device 3 is more accurate and reliable.

[0072] According to a preferred implementation of this embodiment, Figure 7-12As shown, the front rotating ring 7 can be a conical structure, a curved structure, an annular structure or a structure combining a conical and annular structure, and the rear safety ring 8 can be an annular structure, which has the advantages of conforming to ergonomics of the palm of the hand, being easy to operate and having a beautiful appearance.

[0073] Example 3

[0074] This embodiment further optimizes the safety structure of the nail shooter based on the second embodiment.

[0075] like Figure 1-19 As shown, the rear end of the front sleeve 26 is provided with an annular groove 11, and a positioning pin 14 with its end extending into the annular groove 11 is fixed on the front rotating ring 7 through a threaded connection structure. The positioning pin 14 extends into the annular groove 11 through its end, and plays a role of rotation guide for the safety device 3, so that the safety device 3 can only rotate radially on the main sleeve 1 but cannot move axially.

[0076] According to a preferred implementation of this embodiment, Figure 1-16 As shown, the end of the positioning pin 14 is provided with a retractable wave ball, and the bottom of the annular groove 11 is respectively provided with a locking positioning hole 13 and an unlocking positioning hole 12 adapted to the retractable wave ball, and the locking positioning hole 13 and the unlocking positioning hole 12 are both hemispherical or conical. Driven by the safety device 3, the positioning pin 14 can slide smoothly between the locking positioning hole 13 and the unlocking positioning hole 12; and when the safety device 3 is in the locked state, the retractable wave ball is located in the locking positioning hole 13, at which time the locking positioning hole 13 and the retractable wave ball cooperate to position the safety device 3, so that the safety device 3 cannot rotate freely without the action of external force, thereby ensuring a stable and reliable locking effect. When the safety device 3 is in the unlocked state, the retractable wave ball is located in the unlocking positioning hole 12, at which time the unlocking positioning hole 12 and the retractable wave ball cooperate to position the safety device 3, so that the safety device 3 cannot rotate freely without the action of external force, thereby ensuring a stable and reliable unlocking effect. Of course, the aforementioned positioning structure is the preferred mode of this embodiment, and an equivalent positioning structure can also be used instead in actual application.

[0077] Further, the number of the positioning pins 14 is at least one, but under the premise of comprehensively considering the structure, cost and stability, it is preferred that the number of the positioning pins 14 is two and they are symmetrically fixed on the front rotating ring 7. Accordingly, the number of the locking positioning holes 13 and the number of the unlocking positioning holes 12 are the same as the number of the positioning pins 14.

[0078] Furthermore, Fig.15As shown, when the number of the locking positioning holes 13 and the number of the unlocking positioning holes 12 are both two, the axis extension lines of the two adjacent locking positioning holes 13 and the unlocking positioning holes 12 form an angle of 30-60 degrees. Preferably, the angle between the axis extension lines of the two adjacent locking positioning holes 13 and the unlocking positioning holes 12 is 45 degrees, so as to realize the state switching of the safety device 3 under the premise of rotating the safety device 3 at a relatively small angle, thereby making the locking and unlocking operations of the nail shooter more convenient.

[0079] The implementation principle of this embodiment is:

[0080] When the nail gun encounters a dud during firing and needs to eject the shell, Figure 1-3 As shown in 23-25, the safety device 3 is controlled to rotate to the locking state so that the clearance notch 6 is misaligned with the axial limit groove 2. At this time, the safety device 3 locks the limit pin 4 at the front end of the axial limit groove 2 through the safety groove 5, and the retractable bead on the positioning pin 14 is located in the locking positioning hole 13, which forms a locking position for the safety device 3 to prevent the safety device 3 from rotating freely without the action of external force, thereby achieving a stable and reliable locking effect. Correspondingly, the firing pin body 20, the brake pin 23, and the firing pin sleeve 17 are all locked and cannot move. The brake pin 23 cannot contact the firing surface and the firing pin cannot be released. At this time, the nail shooter is in a state where it cannot fire. No matter what method is used to extract the shell, the integrated nail in the nail tube cannot be detonated again, which ensures the safety of the dud shell extraction and avoids the risk of injury. When the dud shell is extracted, as Figure 4-6 20-22, the safety device 3 is controlled to rotate to the unlocked state, so that the clearance notch 6 is connected to the axial limit groove 2. At this time, the safety device 3 releases the lock of the limit pin 4, and the retractable wave ball on the positioning pin 14 is located in the unlocking positioning hole 12, forming an unlocking position for the safety device 3, preventing the safety device 3 from rotating freely without the action of external force, thereby achieving a stable and reliable unlocking effect. Correspondingly, the limit pin 4, the firing pin body 20, the brake pin 23, and the firing pin sleeve 17 can all move, the nail shooter is in a firing state, and can normally fire the nail bullet.

[0081] The above description is only a specific implementation mode of the present invention. Any feature disclosed in this specification, unless otherwise stated, can be replaced by other alternative features that are equivalent or have similar purposes; all the disclosed features, or all the steps in the methods or processes, except for mutually exclusive features and / or steps, can be combined in any way.

Claims

1. A safety axial nail driver, comprising a main sleeve (1), characterized in that: The main sleeve (1) is provided with a safety device (3) at the front end of the axial limit groove (2), which can rotate around the main sleeve (1) to realize the locking state or unlocking state of the limit pin (4); S1: When the safety device (3) is controlled to rotate to the locked state, the limit pin (4) is located at the front end of the axial limit groove (2) and is locked by the safety groove (5) of the safety device (3), the firing pin body (20), the brake pin (23) and the firing pin sleeve (17) are all locked and cannot move, and the nail shooter is in a state where it cannot fire; S2: When the safety device (3) is controlled to rotate to the unlocked state, the limit pin (4) is located in the axial limit groove (2) and the clearance notch (6) of the safety device (3) and is unlocked, the limit pin (4) can move in the axial limit groove (2), and the nail shooter is in a firing state.

2. A safety axial nail driver according to claim 1, characterized in that: The safety groove (5) and the clearance notch (6) are symmetrically arranged on the side wall of the safety device (3); when the safety device (3) is rotated to a locked state, the clearance notch (6) is misaligned with the axial limit groove (2), and the two ends of the limit pin (4) are respectively locked by the safety groove (5) at the front end of the axial limit groove (2); when the safety device (3) is rotated to an unlocked state, the clearance notch (6) is communicated with the axial limit groove (2), and the safety device (3) releases the lock on the limit pin (4).

3. A safety axial nail driver according to claim 2, characterized in that: The safety device (3) comprises an integrally formed front rotating ring (7) and a rear safety ring (8); a safety groove (5) is provided on the rear safety ring (8); and a clearance notch (6) is provided on the end surface of the rear safety ring (8) and is located at one end of the safety groove (5).

4. A safety axial nail driver according to claim 3, characterized in that: The outer diameter of the front rotating ring (7) is greater than the outer diameter of the rear safety ring (8), an outer step (10) is provided between the front rotating ring (7) and the rear safety ring (8), a protective sleeve (21) of the nail shooter is arranged between the outer step (10) and the connecting handle (24), and the rear safety ring (8) is arranged inside the front end of the protective sleeve (21).

5. A safety axial nail driver according to any one of claims 3-4, characterized in that: The main sleeve (1) comprises a front sleeve (26) and a rear sleeve (27); the outer diameter of the front sleeve (26) is larger than the outer diameter of the rear sleeve (27); an outer step (10) is provided between the front sleeve (26) and the rear sleeve (27); an axial limit groove (2) is located on the rear sleeve (27); the front end of the axial limit groove (2) is the connection between the front sleeve (26) and the rear sleeve (27); an inner step (9) matched with the outer step (10) is provided between the front rotating ring (7) and the rear safety ring (8); the front rotating ring (7) and the rear safety ring (8) are respectively located on the front sleeve (26) and the rear sleeve (27).

6. A safety axial nail driver according to claim 5, characterized in that: The rear end of the front sleeve (26) is provided with an annular groove (11), and a positioning pin (14) with an end extending into the annular groove (11) is fixed on the front rotating ring (7).

7. A safety axial nail driver according to claim 6, characterized in that: The end of the positioning pin (14) is provided with a retractable bead, and the bottom of the annular groove (11) is respectively provided with a locking positioning hole (13) and an unlocking positioning hole (12) adapted to the retractable bead. Driven by the safety device (3), the positioning pin (14) can slide between the locking positioning hole (13) and the unlocking positioning hole (12); and in the locked state, the retractable bead is located in the locking positioning hole (13), and the locking positioning hole (13) and the retractable bead cooperate to position the safety device (3); in the unlocked state, the retractable bead is located in the unlocking positioning hole (12), and the unlocking positioning hole (12) and the retractable bead cooperate to position the safety device (3).

8. A safety axial nail driver according to claim 7, characterized in that: The extended axis of the locking positioning hole (13) and the unlocking positioning hole (12) form an angle of 30-60 degrees.

9. A safety axial nail driver according to claim 7, characterized in that: The positioning pins (14) are symmetrically fixed on the front rotating ring (7) through a threaded connection structure, and the number of the locking positioning holes (13) and the number of the unlocking positioning holes (12) are the same as the number of the positioning pins (14).

10. A safety axial nail driver according to claim 7, characterized in that: The locking positioning hole (13) and the unlocking positioning hole (12) are both hemispherical surfaces or conical surfaces.

Images