Nail gun

Abstract

The technical scheme belongs to the technical field of nail guns, and particularly relates to a nail gun which comprises a shell provided with an inner cavity; the firing pin is used for striking the gun nail and ejecting the gun nail; the force supply mechanism is movably arranged in the inner cavity, and the firing pin is arranged on the force supply mechanism; the driving mechanism is mounted in the inner cavity and used for storing force for the force supply mechanism, so that the force supply mechanism can drive the firing pin to move; wherein the force supply mechanism comprises a guide rod, and the two ends of the guide rod are arranged in guide rod mounting positions formed in the shell; the driving seat is movably arranged at the front end of the guide rod in a sleeving manner, and the firing pin is arranged on the driving seat; the spring assembly is arranged outside the guide rod in a sleeving manner and used for pushing the driving seat to move; the shell comprises a left shell body, a right shell body, a left shell body and a right shell body, the right shell is provided with a right cavity, and the right cavity is provided with a right mounting position; when the left shell and the right shell are buckled, the left installation position is matched with the right installation position to form a guide rod installation position, and the left cavity is matched with the right cavity to form an inner cavity.

Description

TECHNICAL FIELD

[0001] The technical scheme relates to the technical field of nail guns, in particular to a nail gun. BACKGROUND

[0002] A nail gun is a fastening tool, which is widely used in construction. At present, a widely used nail gun is an electric nail gun using a lithium battery. The nail gun drives a driving seat by a driving motor and a corresponding transmission structure, and then the driving seat compresses a power supply spring to store energy. When shooting a nail, the driving seat works instantaneously under the spring force of the power supply spring, and a striker provided on the driving seat hits the nail to achieve shooting.

[0003] A power supply unit for a nail gun, a nail shooting driving mechanism and a nail gun are disclosed in Chinese Patent CN202111431425. The internal structure of the nail gun has the following disadvantages: the regulation frame includes front and rear limit seats and two regulation plates. The structure of the regulation frame needs to occupy the space inside the nail gun, and the internal space of the nail gun itself is small. Installing the regulation frame makes the volume of the nail gun larger. At the same time, it also increases the weight of the nail gun, which is not conducive to holding and carrying by hand. And the steps of installing the regulation frame are more complicated. SUMMARY

[0004] The purpose of the technical scheme is to provide a nail gun, which installs a power supply mechanism by directly forming a mounting position in a shell, solving the problems of complex installation structure and safety risk of the original power supply mechanism.

[0005] The purpose of the technical scheme is achieved as follows:

[0006] A nail gun, comprising: a shell having an inner cavity; a striker for hitting a nail and shooting it out; a power supply mechanism movably arranged in the inner cavity, the striker being arranged on the power supply mechanism; and a driving mechanism installed in the inner cavity for storing power for the power supply mechanism so that it can drive the striker to move; wherein the power supply mechanism comprises: a guide rod, both ends of which are arranged in guide rod mounting positions formed in the shell; a driving seat movably sleeved on the front end of the guide rod, the striker being arranged on the driving seat; and a spring assembly sleeved outside the guide rod for pushing the driving seat to move.

[0007] Preferably, the shell comprises: a left shell having a left cavity; and a right shell having a right cavity, the left cavity cooperating with the right cavity to form the inner cavity; wherein the guide rod mounting positions are arranged in the left cavity or the right cavity; or the guide rod mounting positions comprise a left mounting position arranged in the left cavity and a right mounting position arranged in the right cavity.

[0008] Preferably, the spring assembly comprises a front mounting base sleeved on the guide rod and abutting against the driving base, a rear mounting base sleeved on the guide rod and abutting against the inner cavity, and at least one force providing spring having two ends respectively abutting against the front mounting base and the rear mounting base, wherein the front mounting base and the rear mounting base each have at least one stepped portion for mounting the force providing spring.

[0009] Preferably, the force providing mechanism further comprises a buffer sleeved on the guide rod between the driving base and the housing.

[0010] Preferably, the left and right sides of the inner cavity are respectively provided with guide plates, and the left and right sides of the driving base are each correspondingly provided with a guide member; when the driving base moves, the guide member movably abuts against the corresponding guide plate.

[0011] Preferably, at least one guide rod mounting position in the housing has a limiting structure for limiting the guide rod, which comprises two limiting plates formed on the left housing or the right housing, and a limiting pin movably arranged on a plug-in hole of the limiting plate.

[0012] Preferably, the housing inner wall is provided with a blocking member, the limiting pin movably abuts against the blocking member, and the blocking member cooperates with the housing inner wall to lock the limiting pin in the plug-in hole.

[0013] Preferably, the housing has a guide surface, and the driving base is provided with a guide portion; when the driving base moves, the guide portion moves along the guide surface.

[0014] Preferably, the nail gun further comprises a muzzle mechanism arranged at the front end of the housing, the muzzle mechanism is connected with a magazine, the muzzle mechanism has a nail shooting channel, the nail shooting channel communicates with the inner cavity, and the firing pin is movably arranged in the inner cavity and the nail shooting channel.

[0015] Preferably, the firing pin is arranged on the driving base through a fixing pin, the housing further comprises a cover plate buckled on the left housing and the right housing, and the upper end of the fixing pin is limited by the cover plate so that the lower end of the fixing pin is always arranged through the firing pin and the driving base.

[0016] The technical scheme has the following prominent and beneficial technical effects compared with the prior art:

[0017] 1. The housing is directly formed with a guide rod mounting position inside, the guide rod, the driving base and the spring assembly are all limited in the inner cavity of the housing after being assembled with each other, the force providing mechanism can be directly limited by the structure inside the housing, the original regulation frame in the nail gun is omitted, the weight and size of the nail gun can be reduced, and the complicated installation steps are also omitted.

[0018] 2、The shell of the technical scheme is designed with a limiting structure for limiting and guiding the rod, and the two ends of the guiding rod are locked by the limiting structure. When the shell is opened to disassemble and maintain the internal parts, the guiding rod needs to be manually opened to the limiting structure to be taken out, which ensures that the guiding rod will not automatically pop out and be separated. At the same time, since the spring assembly is sleeved outside the guiding rod, the spring assembly will not automatically pop out and be separated, which can avoid the safety risk when disassembling the internal parts of the nail gun.

[0019] 3、The guiding plate and the guide cooperate with each other to reduce the wear between the driving seat and the guiding rod. Since the driving mechanism exerts force in the axial direction when working, the wear between the driving seat and the guiding rod will increase after long-term use. When the driving seat moves, the guide rolls in contact with the guiding plate, which can effectively reduce the friction between the driving seat and the guiding rod and increase the service life of the driving seat and the guiding rod. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The structure of the technical scheme is shown in the figure.

[0021] Figure 2 The structure of the internal structure of the technical scheme is shown in the figure.

[0022] Figure 3 The cross-sectional view of the technical scheme is shown in the figure.

[0023] Figure 4 The cross-sectional view of the power supply mechanism in the shell is shown in the figure.

[0024] Figure 5 The exploded view of the power supply structure is shown in the figure.

[0025] Figure 6 The structure of the limiting structure when locked is shown in the figure.

[0026] Figure 7 The structure of the limiting structure when unlocked is shown in the figure.

[0027] Figure 8 The structure of the limiting structure when unlocked is shown in the figure. Figure 1 The enlarged view of the middle X is shown in the figure.

[0028] Reference numerals: 1. Housing; 111. Guide plate; 112. Guide component; 12. Left housing; 13. Left chamber; 14. Left mounting position; 15. Right housing; 16. Right chamber; 17. Right mounting position; 18. Cover plate; 19. Guide rod mounting position; 191. Guide rod mounting groove; 2. Strike pin; 21. Fixing pin; 3. Power supply mechanism; 31. Guide rod; 32. Drive seat; 321. First abutment end; 322. Second abutment end; 33. Spring assembly; 331. Front mounting seat; 332. Rear mounting seat; 333. Power supply spring; 33 4. External force-supplying spring; 335. Internal force-supplying spring; 336. Stepped portion; 3361. Connecting surface; 3362. Blocking surface; 338. Buffer component; 4. Drive mechanism; 41. Drive disc; 42. First drive end; 43. Second drive end; 44. Drive motor; 45. Planetary gear reducer; 5. Limiting structure; 51. Limiting plate; 52. Limiting pin; 521. Clearance groove; 53. Insertion hole; 54. Blocking component; 55. Guide surface; 56. Guide portion; 6. Nozzle mechanism; 61. Nail cartridge; 62. Battery pack; 63. Control switch. Detailed Implementation

[0029] The specific implementation of this technical solution will be further described in detail below with reference to the accompanying drawings.

[0030]

Example 1

[0031] like Figure 1 As shown, a nail gun for nailing includes a housing 1, a drive mechanism 4, a power supply mechanism 3, a firing pin 2, a nozzle mechanism 6, a nail magazine 61, a battery pack 62, and a control switch 63. The housing 1 has an inner cavity, which includes multiple chambers. The drive mechanism 4, the power supply mechanism 3, the battery pack 62, and the control switch 63 are respectively placed in their respective chambers. The nozzle mechanism 6 is located at the front of the housing 1 and has a nail-firing channel. The nail magazine 61 is located below the nozzle mechanism 6 and connects to the nail-firing channel. The nail magazine 61 is used to store nails and insert nails into the nail-firing channel of the nozzle mechanism 6. The power supply mechanism 3 is equipped with a firing pin 2, which is movably disposed within the housing 1 and the nail-firing channel. The drive mechanism 4 is used to charge the power supply mechanism 3 so that it can drive the firing pin 2 to strike the nail and fire it. The battery pack 62 is connected to the drive mechanism 4 and is used to supply power to the drive mechanism 4. The control switch 63 is used to control the opening and closing of the drive mechanism 4.

[0032] like Figure 2As shown, the shell 1 comprises a left shell 12, a right shell 15 and a cover plate 18, the left shell 12 and the right shell 15 are respectively provided with a left chamber 13 and a right chamber 16, when the left shell 12 and the right shell 15 are buckled through fasteners, the left chamber 13 cooperates with the right chamber 16 to form an inner cavity, meanwhile the cover plate 18 can seal the top of the left shell 12 and the right shell 15, the left chamber 13 and the right chamber 16 are respectively provided with two left mounting positions 14 and right mounting positions 17, the left mounting positions 14 cooperate with the right mounting positions 17 to form two guide rod mounting positions 19, the guide rod mounting positions 19 are used for mounting guide rods 31 of the force mechanism 3, in this embodiment, the guide rods 31 are directly limited through the structure inside the shell 1, without extra components, the structure is simple and the installation is easy.

[0033] The structure of the left mounting positions 14 and the right mounting positions 17 has various combination modes, which can be two guide rod mounting grooves 191 respectively formed on the left shell 12 and the right shell 15 and cooperated to form; or the guide rod mounting groove 191 formed on the left shell 12 and the blocking part arranged on the right shell 15 are cooperated to form, the guide rod mounting groove 191 is preferably an arc-shaped groove, in addition, the structure configuration of the left shell 12 and the right shell 15 can be interchanged.

[0034] At least one guide rod mounting position 19 in the shell 1 is provided with a limiting structure 5, the limiting structure 5 can be arranged on the front end or the rear end of the shell 1, or can be arranged on the front end and the rear end of the shell 1, the limiting structure 5 comprises a limiting plate 51 arranged on the left shell 12 or the right shell 15, a limiting pin 52 inserted into the limiting plate 51 and an avoiding groove 521 formed on the other half shell, when the left shell 12 and the right shell 15 are buckled, the limiting plate 51 is arranged in the avoiding groove 521, the guide rod mounting positions 19 are formed between the limiting plates 51, the limiting pin 52 is movably arranged on the insertion hole 53 of the limiting plate 51, when the two ends of the guide rod 31 are arranged in the guide rod mounting positions 19, the guide rod 31 can be jointly locked by the guide rod mounting groove 191 and the limiting pin 52.

[0035] The left mounting position 14 of the left shell 12 in this embodiment comprises an arc-shaped groove formed on the rear end of the left shell 12, an arc-shaped groove formed on the front end of the left shell 12 and the limiting structure 5, the right mounting position 17 of the right shell 15 comprises an arc-shaped groove formed on the rear end of the right shell 15, an arc-shaped groove formed on the front end of the right shell 15 and the avoiding groove 521, the two arc-shaped grooves arranged on the front end are respectively arranged through the limiting structure 5 and the avoiding groove 521, when the left shell 12 and the right shell 15 are buckled, the two arc-shaped grooves arranged on the front and rear are cooperated to form limiting holes.

[0036] As Figure 2 and Figure 3As shown, the top of the shell 1 is provided with a maintenance window for facilitating replacement of the striker 2, and a cover plate 18 is arranged on the maintenance window. The striker 2 is installed on the driving seat 32 of the force supply mechanism 3 through a fixing pin 21, and the upper end of the fixing pin 21 can be limited by the cover plate 18. When the fixing pin 21 contacts the cover plate 18, the lower end of the fixing pin 21 is still arranged in the striker 2 and the driving seat 32 of the force supply mechanism 3, so that the stability of the striker 2 installation is ensured.

[0037] As shown in Figure 6 As shown, a blocking piece 54 is arranged on the inner wall of the shell 1, and the limiting pin 52 movably abuts against the blocking piece 54. The blocking piece 54 cooperates with the inner wall of the shell 1 to lock the limiting pin 52 in the plug-in hole 53. When the limiting pin 52 enters the limiting plate 51 from the plug-in hole 53, the guide rod mounting position 19 is closed.

[0038] As shown in Figure 7 When the muzzle mechanism 6 is installed, the upper end of the limiting pin 52 is limited in movement distance, and at this time, the limiting pin 52 cannot be completely removed from the limiting plate 51, so that the safety during disassembly of the guide rod 31 is ensured.

[0039] As shown in Figures 2-5 As shown, the force supply mechanism 3 includes a guide rod 31, a driving seat 32, a spring assembly 33 and a buffer 338. The driving seat 32 and the spring assembly 33 are both sleeved on the guide rod 31, and the two ends of the guide rod 31 are respectively installed in the guide rod mounting position 19. The spring assembly 33 includes a front mounting seat 331, a rear mounting seat 332 and at least one force supply spring 333. The front mounting seat 331 is sleeved on the guide rod 31 and abuts against the driving seat 32. The rear mounting seat 332 is sleeved on the guide rod 31 and abuts against the inner wall of the inner cavity. The two ends of the force supply spring 333 respectively abut against the front mounting seat 331 and the rear mounting seat 332. The front mounting seat 331 and the rear mounting seat 332 both have at least one stepped portion 336 for installing the force supply spring 333. The buffer 338 is sleeved on the guide rod 31 between the driving seat 32 and the shell 1, and can play a role of buffering and noise reduction.

[0040] Further, the materials of the front mounting seat 331 and the rear mounting seat 332 can be rubber, plastic or metal.

[0041] As shown in Figure 4 and Figure 5 As shown, the stepped portion 336 includes a connecting surface 3361 and a blocking surface 3362. The end side of the force supply spring 333 abuts against the blocking surface 3362, and the inner wall of the force supply spring 333 abuts against the connecting surface 3361. The stepped portion 336 can increase the stability of the installation of the force supply spring 333.

[0042] Further, the force supply spring 333 can be one force supply spring 333 or multiple force supply springs 333, and the multiple force supply springs 333 can be fixed between the front mounting seat 331 and the rear mounting seat 332 by sleeving or sequentially axially arranging.

[0043] In the embodiment, the number of the force supply spring 333 is set to two, and the two force supply springs 333 are respectively an outer force supply spring 334 and an inner force supply spring 335. The outer force supply spring 334 and the inner force supply spring 335 are different in inner diameter and are sleeved. The outer force supply spring 334, the inner force supply spring 335 and the guide rod 31 are coaxial. The length, the medium diameter, the wire diameter and the pitch of the outer force supply spring 334 are all greater than those of the inner force supply spring 335. In this way, it can be ensured that the movement of the two force supply springs 333 will not interfere.

[0044] In another embodiment, multiple force supply springs 333 are sequentially coaxially arranged along the guide rod 31, and adjacent two force supply springs 333 are connected by a connecting plate.

[0045] As shown in Figure 2 and Figure 8 , the driving mechanism 4 includes a driving motor 44, a planetary gear reducer 45 and a driving disc 41. The power generated by the driving motor 44 is transmitted to the driving disc 41 after being decelerated by the planetary gear reducer 45, so that the driving disc 41 does a circular motion. The driving disc 41 is vertically provided with a first driving end 42 and a second driving end 43 which are different in height. The bottom of the driving seat 32 is provided with a second abutting end 322 matched with the first driving end 42 and a first abutting end 321 matched with the second driving end 43.

[0046] The principle of the driving mechanism 4 driving the movement of the driving seat 32 is as follows: first, the driving disc 41 drives the first driving end 42 and the second driving end 43 to do a circular motion. The first driving end 42 and the second driving end 43 will be in contact with the second abutting end 322 and the first abutting end 321 in turn and push the driving seat 32 to move in the opposite direction of the nail shooting direction due to the difference in height. When the driving seat 32 is continuously and gradually pushed to the nail shooting position, the driving motor 44 stops. When the control switch 63 is pressed, the driving motor 44 starts. After the first driving end 42 and the second driving end 43 are separated from the driving seat 32, the force supply spring 333 releases the elastic force to push the striker 2 out along the nail shooting direction through the driving seat 32, and the nail shooting is completed. At the same time, the driving motor 44 continues to rotate and pushes the driving seat 32 again until the nail shooting position, and the driving motor 44 stops.

[0047] When the driving disc 41 rotates, the first driving end 42 and the second driving end 43 will cause the driving seat 32 to exert a force on the guide rod 31 in the axial direction, which will increase the friction between the driving seat 32 and the guide rod 31, as shown in Figure 2As shown, two guide plates 111 are arranged in the inner cavity through screws, and the two guide plates 111 are arranged on the left shell 12 and the right shell 15 respectively. The guide plate 111 can also be embeddedly installed in the shell 1. The two sides of the driving seat 32 are provided with mounting grooves, and the guide pieces 112 are arranged in the corresponding mounting grooves. The guide plate 111 is preferably a metal plate, and the guide piece 112 is preferably a ball. When the driving seat 32 moves, the guide piece 112 rolls on the guide plate 111 in a rolling friction manner to reduce the friction between the driving seat 32 and the inner wall of the shell 1, and guide the movement direction of the driving seat 32. After the movement direction of the driving seat 32 is guided, the driving seat 32 can better cooperate with the guide rod 31, so that the friction generated when the driving seat 32 moves on the guide rod 31 is reduced, and the stable movement and service life of the driving seat 32 are ensured.

[0048] As shown in Figure 6 The shell 1 has a guide surface 55, and the side surface of the driving seat 32 is provided with a guide portion 56. The abutting surface of the guide portion 56 and the guide surface 55 is in the horizontal direction. The guide portion 56 cooperates with the guide surface 55 to assist the vertical direction of the driving seat 32 when moving, which can effectively prevent the driving seat 32 from moving up and down, and make the movement more stable.

[0049]

Embodiment 2

[0050] The settings of this embodiment are basically the same as those of embodiment 1, and the only difference is the setting mode of the front mounting seat 331 and the rear mounting seat 332. In this embodiment, the front mounting seat 331 and the rear mounting seat 332 can be integrally formed on the driving seat 32 and in the shell 1 respectively.

[0051] The basic principles and main features of the technical scheme and the advantages of the technical scheme are shown and described above. It should be understood by those skilled in the art that the technical scheme is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the technical scheme. Without departing from the spirit and scope of the technical scheme, various changes and improvements can be made to the technical scheme, and these changes and improvements all fall within the scope of the claimed technical scheme. The scope of protection of the technical scheme is defined by the appended claims and their equivalents.

Claims

1. A nail gun, characterized by, The utility model relates to a gun cartridge, which comprises: a shell (1) having an inner cavity; a firing pin (2) for striking a gun nail and making it shoot out; a power supply mechanism (3) movably arranged in the inner cavity, the firing pin (2) being arranged on the power supply mechanism (3); and a driving mechanism (4) installed in the inner cavity for storing power for the power supply mechanism (3) so that the firing pin (2) can be moved. The power supply mechanism (3) comprises: a guide rod (31) having both ends arranged in a guide rod mounting position (19) formed in the shell (1); a driving seat (32) movably sleeved on the front end of the guide rod (31), the firing pin (2) being arranged on the driving seat (32); and a spring assembly (33) sleeved on the guide rod (31) for pushing the driving seat (32) to move.

2. A nail gun according to claim 1, wherein The shell (1) comprises: a left shell (12) having a left chamber (13); and a right shell (15) having a right chamber (16), the left chamber (13) and the right chamber (16) forming the inner cavity. The guide rod mounting position (19) is arranged in the left chamber (13) or the right chamber (16), or the guide rod mounting position (19) comprises a left mounting position (14) arranged in the left chamber (13) and a right mounting position (17) arranged in the right chamber (16). The spring assembly (33) comprises:

3. The nail gun of claim 1, wherein, a front mounting seat (331) sleeved on the guide rod (31) and abutting against the driving seat (32); a rear mounting seat (332) sleeved on the guide rod (31) and abutting against the inner cavity; and at least one power supply spring (333) having both ends abutting against the front mounting seat (331) and the rear mounting seat (332) respectively. The front mounting seat (331) and the rear mounting seat (332) each have at least one stepped portion (336) for mounting the power supply spring (333). The power supply mechanism (3) further comprises a buffer (338) sleeved on the guide rod (31) between the driving seat (32) and the shell (1).

4. A nail gun according to claim 3, wherein: The left and right sides of the inner cavity are respectively provided with guide plates (111), and the left and right sides of the driving seat (32) are each correspondingly provided with a guide piece (112).

5. A nail gun according to any one of claims 1-4, characterized in that: When the driving seat (32) moves, the guide piece (112) movably abuts against the corresponding guide plate (111). At least one guide rod mounting position (19) in the shell (1) has a limiting structure (5) for limiting the guide rod (31), which comprises:

6. The nail gun of claim 2, wherein: two limiting plates (51) formed on the left shell (12) or the right shell (15); and a limiting pin (52) movably arranged on a plug-in hole (53) of the limiting plate (51). A blocking piece (54) is arranged on the inner wall of the shell (1), the limiting pin (52) movably abuts against the blocking piece (54), and the blocking piece (54) cooperates with the inner wall of the shell (1) to lock the limiting pin (52) in the plug-in hole (53).

7. A nail gun according to claim 6, wherein: The shell (1) has a guide surface (55), and the driving seat (32) is provided with a guide portion (56).

8. The nail gun of claim 1, wherein: ​ When the driving seat (32) moves, the guide part (56) moves along the guide surface (55).

9. A nail gun according to any one of claims 1-4, 8, wherein: The gun nozzle mechanism (6) is arranged at the front end of the shell (1), and a magazine is connected to the gun nozzle mechanism (6). The gun nozzle mechanism (6) has a nail shooting channel which is communicated with the inner cavity, and the striker (2) is movably arranged in the inner cavity and the nail shooting channel.

10. The nail gun of claim 2, wherein: The striker (2) is arranged on the driving seat (32) through a fixing pin (21). The shell (1) further comprises a cover plate (18) which is buckled on the left shell (12) and the right shell (15). The upper end of the fixing pin (21) is limited by the cover plate (18), so that the lower end of the fixing pin (21) always passes through the striker (2) and the driving seat (32).

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