Nail gun

Abstract

The application discloses a nail gun, which comprises a shell, a cylinder at least partially accommodated in the shell, a piston slidingly connected in the cylinder, a striker connected to the piston, a motor accommodated in the shell, a transmission mechanism in linkage with the striker and installed to transmit power of the motor and drive the striker to enter the cylinder to compress gas, a mounting portion fixedly installed on the shell, a nail clamp having one end installed on the mounting portion, a barrel installed in the mounting portion and connected with the other end of the nail clamp, a muzzle fixedly installed in the barrel and partially exposed from the mounting portion and the barrel, and a limiting portion at least partially located in the shell and matched with an outer wall of the striker. The limiting portion is arranged to limit the striker, improve the collinearity of the striking force and the recoil force of the striker, reduce the probability of the middle part of the striker shaking and deforming and the nail breaking or bending, and the nail gun can be applied to a workpiece made of high-hardness material, thereby improving user experience.

Description

Technical Field

[0001] This application belongs to the field of power tool technology, specifically relating to a nail gun. Background Technology

[0002] Nail guns use the kinetic energy of a firing pin to drive nails into materials such as steel plates, wood, and concrete. The firing pin is relatively thin and long. Due to the large impact force, the firing pin will vibrate and deform during impact, causing the force to be unable to be concentrated on one point when nailing. This makes the nails prone to bending and breaking, affecting the user experience and reducing the lifespan of the machine.

[0003] Therefore, it is necessary to provide a nail gun to address the aforementioned technical problems.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this application and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this application is to provide a nail gun that can limit the firing pin, reduce the probability of firing pin vibration and deformation, nail breakage and bending, and improve the firing pin life.

[0006] To achieve the above objectives, a specific embodiment of this application provides the following technical solution:

[0007] A nail gun, the nail gun comprising:

[0008] shell;

[0009] The cylinder is at least partially housed within the housing;

[0010] The piston is slidably connected in the cylinder;

[0011] The firing pin is connected to the piston;

[0012] The motor is housed within the housing;

[0013] The transmission mechanism is installed in conjunction with the striker to transmit the power of the motor and drive the striker into the cylinder to compress the gas.

[0014] The mounting part is fixedly mounted on the outer casing;

[0015] The nail clip is attached to the mounting portion at one end.

[0016] The mounting part is installed in the housing and is mounted to the other end of the nail clip;

[0017] The gun barrel is installed in the mounting portion;

[0018] The muzzle is fixedly installed in the barrel and partially exposed from the mounting part and the barrel;

[0019] The limiting part is at least partially located in the housing and mates with the outer wall of the firing pin.

[0020] In one or more embodiments of this application, the end of the firing pin away from the piston is disposed in the barrel, and the limiting part includes a first limiting part disposed on the inner wall of the barrel.

[0021] In one or more embodiments of this application, the first limiting portion includes one or a combination of a plane and a curved surface.

[0022] In one or more embodiments of this application, the first limiting part includes a first arc surface and a second arc surface disposed opposite to each other, and a guide groove connecting the first arc surface and the second arc surface, and a guide block that cooperates with the guide groove is provided on the side wall of the firing pin.

[0023] In one or more embodiments of this application, the nail clip has a receiving cavity, the side wall of the gun barrel has a through groove communicating with the receiving cavity, the side wall of the firing pin has teeth, the teeth are at least partially exposed in the through groove and are linked to the transmission mechanism.

[0024] In one or more embodiments of this application, the firing pin is slidably disposed in the mounting portion, and the limiting portion includes a second limiting portion disposed on the inner wall of the mounting portion.

[0025] In one or more embodiments of this application, the barrel includes a first body mounted in the mounting portion and a second body disposed away from the firing pin, the second body being at least partially exposed in the mounting portion and fixedly mounted to the nozzle.

[0026] In one or more embodiments of this application, the inner diameter of the first body is less than or equal to the inner diameter of the nozzle, and the inner diameter of the second body is greater than the outer diameter of the nozzle.

[0027] In one or more embodiments of this application, one of the inner wall of the mounting part and the outer wall of the first main body is provided with an assembly groove, and the other is provided with an assembly column that mates with the assembly groove.

[0028] In one or more embodiments of this application, the mounting portion and the gun barrel are integrally formed or separately configured.

[0029] Compared with the prior art, the nail gun of this application has the following beneficial effects:

[0030] This application limits the firing pin by setting a limiting part, which improves the collinearity of the firing pin's impact force and recoil force, and reduces the probability of vibration and deformation in the middle of the firing pin and nail breakage or bending. At the same time, the nail gun can be applied to workpieces made of high-hardness materials, improving the user experience. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a three-dimensional structural diagram of the nail gun in Embodiment 1 of this application;

[0033] Figure 2 This is a cross-sectional view of the nail gun portion of the structure in Embodiment 1 of this application;

[0034] Figure 3 for Figure 2 Enlarged view of the local structure at point A;

[0035] Figure 4 This is a partial cross-sectional view of the nail gun in Embodiment 1 of this application;

[0036] Figure 5 This is a three-dimensional structural diagram of the gun barrel in Embodiment 1 of this application;

[0037] Figure 6 This is a three-dimensional structural diagram of the firing pin in Embodiment 1 of this application;

[0038] Figure 7 This is a schematic diagram of the assembly structure of the nozzle, barrel, mounting part and firing pin in Embodiment 1 of this application;

[0039] Figure 8 This is a cross-sectional view of the nail gun portion of the structure in Embodiment 2 of this application;

[0040] Figure 9 for Figure 8 Enlarged view of the local structure at point B;

[0041] Figure 10 This is a three-dimensional structural diagram of the mounting part in Embodiment 2 of this application;

[0042] Figure 11 This is a schematic diagram of the assembly structure of the nozzle, barrel, mounting part and firing pin in Embodiment 2 of this application.

[0043] Explanation of key figure labels:

[0044] 1-Outer shell;

[0045] 2-Cylinder;

[0046] 3-Piston;

[0047] 4-Firing pin; 41-Tooth; 42-Guide block;

[0048] 51-Motor; 52-Transmission mechanism;

[0049] 6-Pin clip; 61-Receiving cavity; 62-Pin pack; 621-Pin; 622-Connector;

[0050] 7-Installation section; 71-Assembly column; 72-Second limiting section;

[0051] 8-Barrel; 80-First limiting part; 801-First arc surface; 802-Second arc surface; 803-Guide groove; 81-First main body; 811-Through groove; 812-Assembly groove; 82-Second main body;

[0052] 9- Gun muzzle. Detailed Implementation

[0053] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of this application.

[0054] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0055] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0056] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0057] Because the recoil force generated during the impact of the nail 621 first acts on the end of the firing pin 4 furthest from the piston 3, then is transmitted to the middle of the firing pin 4, and finally to the end of the firing pin 4 facing the piston 3, deformation may occur at any position of the firing pin 4 during the transmission of the recoil force within the firing pin 4, only differing in probability. Since the firing pin 4 is a slender rod, the middle of the firing pin 4 experiences a larger bending moment during the impact of the nail 621, and this area bears higher bending stress. If there is no structure to support the middle of the firing pin 4, it will vibrate and tilt, causing the force applied to the head of the nail 621 to be unconcentrated, making the nail 621 prone to bending and breakage, and making it difficult for the nail 621 to penetrate hard materials. To solve the above problems, this application proposes a nail gun.

[0058] Example 1:

[0059] Reference Figures 1-3 As shown, the nail gun in this embodiment may include a housing 1, a cylinder 2, a piston 3, a firing pin 4, a motor 51, a transmission mechanism 52, a nail clip 6, a mounting part 7, a barrel 8, and a nozzle 9. The cylinder 2 is at least partially housed in the housing 1; the piston 3 is slidably connected to the cylinder 2; the firing pin 4 is connected to the piston 3; the motor 51 is housed in the housing 1; the transmission mechanism 52 is linked to the firing pin 4, transmitting the power of the motor 51 and driving the firing pin 4 into the cylinder 2 to compress gas; one end of the nail clip 6 is mounted on the mounting part 7, and a row of nails 62 can be installed in the nail clip 6, which may include nails 621 and connectors 622; the mounting part 7 is installed in the housing 1 and is mounted to the other end of the nail clip 6; the barrel 8 is installed in the mounting part 7; the nozzle 9 is fixedly installed in the barrel 8 and partially protrudes from the mounting part 7 and the barrel 8; a limiting part, at least partially, may be located in the housing 1 and cooperate with the outer wall of the firing pin 4. During the process of the firing pin 4 reciprocating along its length to eject the nail 621 from the nail gun, the mounting part 7 and the gun barrel 8 can respectively engage with the firing pin 4 through the setting of the limiting part that cooperates with the outer wall of the firing pin 4, thereby limiting the firing pin 4. This improves the collinearity of the impact force and recoil force of the firing pin 4, reduces the deviation between the impact force and recoil force, prevents the middle part of the firing pin 4 from shaking and deforming during the impact, and reduces the probability of broken or bent nails. At the same time, the nail gun can be applied to workpieces made of high-hardness materials, improving the user experience.

[0060] When the firing pin 4 slides and impacts within the mounting section 7, the impact force and recoil force during the impact process act directly on the firing pin 4. If the middle part of the firing pin 4 lacks a guiding and limiting structure, the middle part of the firing pin 4 is easily affected by the recoil force, causing it to vibrate and deform. (Refer to...) Figures 3-7As shown, in this embodiment, the end of the firing pin 4 furthest from the piston 3 is disposed in the barrel 8, and the limiting part may include a first limiting part 80 disposed on the inner wall of the barrel 8. According to this design, during the reciprocating motion of the firing pin 4, the middle part of the firing pin 4 can be guided and limited by the first limiting part 80, reducing the occurrence of vibration and deformation in the middle part of the firing pin 4.

[0061] The first limiting portion 80 in this application may include one or a combination of a plane and a curved surface. For example, see [reference needed]. Figure 4 , Figure 5 As shown, since the sidewall of the firing pin 4 in this embodiment has two opposing arc surfaces, the first limiting part 80 in this embodiment may include a first arc surface 801 and a second arc surface 802 opposing each other, and a guide groove 803 connecting the first arc surface 801 and the second arc surface 802. A guide block 42 that cooperates with the guide groove 803 may be provided on the sidewall of the firing pin 4. The guide groove 803 and the through groove 811 are opposite each other. The first arc surface 801 and the second arc surface 802 respectively cooperate with the two arc surfaces on the sidewall of the firing pin 4 to axially limit the firing pin 4. The guide groove 803 and the guide block 42 cooperate to circumferentially limit the firing pin 4, thereby preventing circumferential torsion of the firing pin 4 during reciprocating sliding.

[0062] Of course, this application is not limited to this. When the sidewall of the firing pin 4 in other embodiments has two opposing planes, the first limiting part 80 on the inner wall of the barrel 8 may also include the first plane and the second plane that are opposing each other. In this case, even without the guide groove 803, the firing pin 4 can be directly limited circumferentially by the first plane and the second plane, thereby preventing the firing pin 4 from twisting circumferentially during reciprocating sliding. Alternatively, in other embodiments, the first limiting part 80 may have a plane and an arc surface that are opposing each other, etc., all of which are within the protection scope of this application.

[0063] As the firing pin 4 slides back and forth along its length, the end of the firing pin 4 furthest from the piston 3 is always positioned within the barrel 8. The first limiting part 80 guides and limits the middle portion of the firing pin 4, reducing vibration and deformation. To facilitate the linkage between the middle portion of the firing pin 4, which is inserted deep into the barrel 8, and the transmission mechanism 52, so that the transmission mechanism can drive the firing pin 4 into the compressed gas in the cylinder 2, refer to... Figures 4-6 As shown, the nail clip 6 in this embodiment may have a receiving cavity 61, and the side wall of the barrel 8 may have a through groove 811 communicating with the receiving cavity 61. The through groove 811 extends to the end face of the barrel 8 facing the piston 3. The side wall of the firing pin 4 may have teeth 41, which at least partially protrude from the through groove 811 and are linked to the transmission mechanism 52. The transmission mechanism 52 is provided with a transmission wheel linked to the motor 51. The transmission wheel cooperates with the teeth 41 to realize the retraction of the firing pin 4 into the cylinder 2.

[0064] To facilitate the processing of the mounting part 7 and the barrel 8 and avoid overly complex structures, the mounting part 7 and the barrel 8 in this embodiment can be provided separately. Of course, this application is not limited to this, and the mounting part 7 and the barrel 8 in other embodiments can also be directly integrally formed.

[0065] Specifically, in order to connect the barrel 8 and the mounting part 7, and the barrel 8 and the nozzle 9, refer to Figure 3 As shown, the barrel 8 in this embodiment may include a first body 81 installed in the mounting portion 7 and a second body 82 disposed away from the firing pin 4. The second body 82 may at least partially protrude from the mounting portion 7 and be fixedly installed with the nozzle 9. The inner wall of the barrel 8 away from the piston 3 (i.e., the second body 82) is provided with internal threads, and the outer wall of the nozzle 9 is provided with external threads that are screwed into the internal threads, thereby allowing the nozzle 9 to be installed in the barrel 8.

[0066] Preferably, refer to Figure 3 As shown, in this embodiment, the inner diameter of the first body 81 can be less than or equal to the inner diameter of the nozzle 9, and the inner diameter of the second body 82 can be greater than the outer diameter of the nozzle 9. Based on this design, when the firing pin 4 strikes the nail 621 to drive the nail 621 into the workpiece, the nozzle 9 can be prevented from interfering with the firing pin 4, allowing the firing pin 4 to smoothly slide back and forth within the nozzle 9.

[0067] To prevent the barrel 8 from rotating circumferentially within the mounting section 7, refer to Figure 3 , Figure 5 As shown, in this embodiment, the inner wall of the mounting portion 7 may be provided with an assembly post 71, and the outer wall of the first main body 81 may be provided with an assembly groove 812 that mates with the assembly post 71. Of course, this application is not limited to this; in other embodiments, the assembly post 71 may be provided on the outer wall of the first main body 81, and the assembly groove 812 may be provided on the inner wall of the mounting portion 7.

[0068] Example 2:

[0069] The difference from Example 1 is that: (Refer to...) Figures 8-11 As shown, in this embodiment, the firing pin 4 can be slidably disposed in the mounting portion 7, and the limiting portion may include a second limiting portion 72 disposed on the inner wall of the mounting portion 7. The end of the firing pin 4 away from the piston 3 is disposed in the barrel 8 and can be guided and limited by the first limiting portion 80. During the reciprocating movement of the firing pin 4, the middle part of the firing pin 4 can be guided and limited by the second limiting portion 72. By using multiple coordinated guiding and limiting methods, the axial guiding and limiting of the firing pin 4 is strengthened, which helps to improve the collinearity of the impact force direction and the recoil force direction of the firing pin 4, prevents the firing pin 4 from tilting and deviating as a whole, and reduces the probability of vibration deformation and breakage / bending of the middle part of the firing pin 4.

[0070] It should be noted that the cylinder 2, piston 3, motor 51 and transmission mechanism 52, etc., which are not described in detail in this application, and their working principles can all adopt existing solutions in the prior art, which can be understood and accepted by those skilled in the art, and therefore will not be described in detail.

[0071] In the description of the embodiments of this application, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly placed when the product of this application is used, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0072] In the description of the embodiments of this application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0073] In the description of the embodiments of this application, it should also be noted that the terms "first", "second", etc. used herein do not specifically refer to any order or sequence, nor are they intended to limit this application; they are merely used to distinguish components or operations described using the same technical terms.

[0074] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0075] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A nail gun, characterized in that, The nail gun includes: Outer shell (1); The cylinder (2) is at least partially housed within the housing (1); Piston (3) is slidably connected in the cylinder (2); The firing pin (4) is connected to the piston (3); The motor (51) is housed in the outer casing (1); The transmission mechanism (52) is linked to the striker (4) to transmit the power of the motor (51) and drive the striker (4) into the cylinder (2) to compress the gas; The nail clip (6) is attached to the outer casing (1) at one end; The mounting part (7) is installed in the outer casing (1) and is mounted to the other end of the nail clip (6); The barrel (8) is installed in the mounting part (7); The muzzle (9) is fixedly installed in the barrel (8) and partially exposed in the mounting part (7) and the barrel (8); The limiting part is at least partially located in the housing (1) and cooperates with the outer wall of the firing pin (4).

2. The nail gun according to claim 1, characterized in that, The firing pin (4) is disposed at the end away from the piston (3) in the barrel (8), and the limiting part includes a first limiting part (80) disposed on the inner wall of the barrel (8).

3. The nail gun according to claim 2, characterized in that, The first limiting part (80) includes one or a combination of a plane and a curved surface.

4. The nail gun according to claim 3, characterized in that, The first limiting part (80) includes a first arc surface (801) and a second arc surface (802) disposed opposite to each other, and a guide groove (803) connecting the first arc surface (801) and the second arc surface (802). The side wall of the firing pin (4) is provided with a guide block (42) that cooperates with the guide groove (803).

5. The nail gun according to claim 2, characterized in that, The nail clip (6) has a receiving cavity (61), the side wall of the gun barrel (8) has a through groove (811) that communicates with the receiving cavity (61), the side wall of the firing pin (4) has a tooth (41), the tooth (41) is at least partially exposed in the through groove (811) and is linked to the transmission mechanism (52).

6. The nail gun according to claim 1, characterized in that, The firing pin (4) is slidably disposed in the mounting part (7), and the limiting part includes a second limiting part (72) disposed on the inner wall of the mounting part (7).

7. The nail gun according to claim 1, characterized in that, The barrel (8) includes a first body (81) installed in the mounting portion (7) and a second body (82) disposed away from the firing pin (4), the second body (82) being at least partially exposed in the mounting portion (7) and fixedly installed with the nozzle (9).

8. The nail gun according to claim 7, characterized in that, The inner diameter of the first body (81) is less than or equal to the inner diameter of the nozzle (9), and the inner diameter of the second body (82) is greater than the outer diameter of the nozzle (9).

9. The nail gun according to claim 7, characterized in that, The inner wall of the mounting part (7) and the outer wall of the first main body (81) are provided with an assembly groove (812), and the other part is provided with an assembly column (71) that cooperates with the assembly groove (812).

10. The nail gun according to claim 1, characterized in that, The mounting part (7) and the gun barrel (8) are integrally formed or separately set.

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