Buffering cushion structure of nail gun

Abstract

The utility model discloses a nail gun cushion pad structure, which relates to the field of electric nail guns, and comprises a cushion pad body, the cushion pad body is embedded and mounted in a rack through a mounting surface, so that a contact surface deviating from the mounting surface faces a piston, and two shock absorbers are arranged on the contact surface and used for contacting with the piston and providing buffering. A through groove is formed in the middle of the buffering cushion body, a punching needle penetrates through the through groove, the through groove is located between the two shock absorption bodies, and a vent groove communicated with the through groove is formed in the outer edge of the contact face. The shock-absorbing body of the buffer pad is designed into two sections (irregular circle), and the vent groove and the through groove are arranged between the two sections of shock-absorbing body, so that air in the air cavity formed by the outer ring of the piston can be smoothly exhausted, sharp noise is eliminated, the sound becomes low, and the nailing experience of a user is improved.

Description

Technical Field

[0001] This utility model relates to the field of electric nail guns, and specifically to a nail gun buffer pad structure. Background Technology

[0002] Nail guns are commonly used nailing tools. During operation, as the punch strikes nails and other fasteners, a buffer pad is needed between the piston connecting the punch and the frame to prevent rigid collisions that could damage the entire nail gun. With technological advancements and increasing consumer demands for ease of use, portability, and operation, lithium-ion battery-powered nail guns have emerged. This has expanded the range of nail guns beyond simple pneumatically driven models, and buffer pads are no longer limited to regular circles. To meet the structural requirements of lithium-ion battery-powered nail guns, it is necessary to design a new type of buffer pad. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a nail gun buffer pad structure to avoid rigid collision between the piston and the frame, which would damage the entire nail gun.

[0004] The purpose of this utility model is achieved through the following technical solution: This nail gun buffer pad structure is inserted into the nail gun body. A punch guide is provided at the front of the nail gun body, and a cylinder is provided at the rear of the nail gun body. A piston is slidably arranged in the cylinder. A frame is connected between the punch guide and the cylinder. One end of the punch is connected to the piston, and the other end of the punch passes through the frame and extends into the punch guide. The buffer pad structure includes a buffer pad body. The buffer pad body is embedded in the frame through a mounting surface, so that the contact surface facing away from the mounting surface faces the piston. Two shock absorbers are provided on the contact surface for contacting the piston and providing cushioning. A through groove is opened in the middle of the buffer pad body for the punch to pass through. The through groove is located between the two shock absorbers. A vent groove communicating with the through groove is opened on the outer edge of the contact surface.

[0005] As a further technical solution, guide rings are installed on the outer rings at both ends of the piston, and a sealing ring is installed on the outer ring of the piston between the two guide rings. A gas chamber is formed between the guide ring on the side close to the buffer pad body and the inner wall of the cylinder. The gas chamber is connected to the through groove through the venting groove.

[0006] As a further technical solution, an installation cavity is opened on the frame, the mounting surface of the buffer pad body is embedded in the installation cavity, and the contact surface is exposed in the installation cavity and extends into the cylinder.

[0007] As a further technical solution, a through groove is also opened in the mounting cavity, corresponding to the position of the through groove on the buffer pad body, for the punch to pass through.

[0008] As a further technical solution, at least one positioning groove is provided in the mounting cavity, and a positioning protrusion is provided on the mounting surface at the position corresponding to the positioning groove, so that the buffer pad body and the frame are positioned together.

[0009] The beneficial effects of this utility model are as follows:

[0010] 1. The shock absorber of the buffer pad is designed as two halves (irregular circles), and a ventilation groove and a through groove are opened between the two halves of the shock absorber. The gas in the air chamber formed by the outer ring of the piston can be smoothly discharged, eliminating sharp noise and making the sound deeper.

[0011] 2. The shock absorber contacts the piston to buffer the impact, avoiding rigid collisions between the piston and the frame that could damage the entire nail gun;

[0012] 3. The mounting surface of the buffer pad body is provided with positioning protrusions, which serve to position and prevent mistaken assembly, and can cooperate with the positioning slots on the frame to maintain correct assembly. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the nail gun body in this utility model.

[0014] Figure 2 This is a cross-sectional view of the main body of the nail gun in this utility model (only a portion is shown).

[0015] Figure 3 This is a partially enlarged structural diagram of the piston and the buffer pad body in this utility model.

[0016] Figure 4 This is a schematic diagram of the structure of the buffer pad body in this utility model. Figure 1 .

[0017] Figure 5 This is a schematic diagram of the structure of the buffer pad body in this utility model. Figure 2 .

[0018] Figure 6 This is a schematic diagram of the structure of the buffer pad body and the frame after assembly in this utility model.

[0019] Figure 7 This is a schematic diagram of the structure of the buffer pad body and the frame during assembly in this utility model.

[0020] Explanation of reference numerals in the attached drawings: Cylinder 1, Piston 2, Guide ring 21, Sealing ring 22, Punch 3, Buffer pad body 4, Mounting surface 41, Positioning protrusion 411, Contact surface 42, Shock absorber 421, Vent groove 422, Frame 5, Mounting cavity 51, Positioning groove 52, Punch guide body 6, Through groove 7, Air cavity 8, Nail gun body 9. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings:

[0022] Example: As attached Figures 1-7 As shown, this nail gun buffer pad structure includes a cylinder 1, a piston 2, a guide ring 21, a sealing ring 22, a punch 3, a buffer pad body 4, a mounting surface 41, a positioning protrusion 411, a contact surface 42, a shock absorber 421, a venting groove 422, a frame 5, a mounting cavity 51, a positioning groove 52, a punch guide 6, a through groove 7, an air chamber 8, and a nail gun body 9.

[0023] Reference Appendix Figure 1 , 2 During assembly, the buffer pad structure is placed inside the nail gun body 9. A punch guide 6 is installed at the front of the nail gun body 9, and a cylinder 1 is installed at the rear of the nail gun body 9. A piston 2 is slidably installed inside the cylinder 1. A frame 5 is connected between the punch guide 6 and the cylinder 1. The frame 5 is threadedly connected to the nail gun body 9, and the end face of the frame 5 is in close contact with the front face of the cylinder 1. The right end of the punch 3 is connected to the piston 2, and the left end of the punch 3 passes through the frame 5 and extends into the punch guide 6.

[0024] like Figure 4 , 5 As shown in Figures 6 and 7, the buffer pad body 4 is embedded in the frame 5 through the mounting surface 41, such that the contact surface 42 facing away from the mounting surface 41 faces the piston 2. Two damping bodies 421 are provided on the contact surface 42. The damping bodies 421 contact the piston 2 and provide cushioning, preventing rigid collisions between the piston and the frame that could damage the entire nail gun. A through groove 7 is formed in the middle of the buffer pad body 4, connecting the mounting surface 41 and the contact surface 42. The punch 3 passes through the through groove 7, which is located in the middle of the two damping bodies 421. Figure 5 As shown, a recess is provided on the outer edge of the contact surface 42 at a position corresponding to the narrow side of the through groove 7. This recess is the vent groove 422, which is connected to the through groove 7. Preferably, the through groove 7 and the punch 3 are matched in size and shape.

[0025] Furthermore, such as Figure 3 As shown, a guide ring 21 is installed on the outer rings at both the upper and lower ends of the piston 2. A sealing ring 22 is installed on the outer ring of the piston 2 between the two guide rings 21. An air chamber 8 is formed between the guide ring 21 near the buffer pad body 4 and the inner wall of the cylinder 1. This air chamber 8 is connected to the through groove 7 through the vent groove 422. When the end face of the piston 2 is in close contact with the contact surface 42 (the air chamber 8 is compressed), the gas located on the outer ring of the piston 2 (i.e., the gas in the air chamber 8) enters the through groove 7 along the vent groove 422 and is discharged.

[0026] Preferably, such as Figure 6 , 7As shown, a mounting cavity 51 is formed on the frame 5. The mounting surface 41 of the buffer pad body 4 is embedded in the mounting cavity 51, and the contact surface 42 is exposed in the mounting cavity 51 and extends into the cylinder 1. A through groove 7 is also formed in the mounting cavity 51, corresponding to the through groove 7 on the buffer pad body 4, for the punch 3 to pass through. Furthermore, two positioning grooves 52 are provided in the mounting cavity 51 (located at the upper and lower ends of the through groove 7, respectively). Positioning protrusions 411 are provided on the mounting surface 41 at positions corresponding to the positioning grooves 52, so that the buffer pad body 4 and the frame 5 are positioned together.

[0027] The working process of this utility model:

[0028] During assembly, align the positioning protrusion 411 on the mounting surface 41 of the buffer pad body 4 with the positioning groove 52 inside the mounting cavity 51 of the frame 5 to complete the installation of the buffer pad body 4 and the frame 5, so that the contact surface 42 protrudes from the mounting cavity 51 and extends into the cylinder 1. After the punch 3 is fixed to the piston 2, it passes through the through groove 7 on the buffer pad body 4 and the frame 5 in sequence. Figure 2 , 3 As shown, a gas chamber 8 is formed between the guide ring 21 and the inner wall of the cylinder 1. When the piston 2 gradually moves outward until it contacts the damper 421, the gas in the gas chamber 8 can enter the through groove 7 through the vent groove 422 and be discharged outward. The outer ring of the piston 2 will not form a closed gas chamber. Once a closed gas chamber is formed, it will burst out from the non-sealed part after being compressed to a certain pressure value, producing a sonic boom, which causes a sharp noise during nailing. By increasing the vent groove, after the piston and the buffer pad come into contact, the gas in the gas chamber formed by the outer ring can be connected to the buffer pad through the vent groove and the through groove (or hole) and be discharged directly into the atmosphere. This can eliminate this sharp noise and make the sound lower.

[0029] It is understood that, for those skilled in the art, any equivalent substitutions or modifications to the technical solutions and inventive concepts of this utility model should fall within the protection scope of the appended claims.

Claims

1. A nail gun buffer structure, inserted into a nail gun body (9), wherein a punch guide (6) is provided at the front of the nail gun body (9), a cylinder (1) is provided at the rear of the nail gun body (9), a piston (2) is slidably arranged in the cylinder (1), a frame (5) is connected between the punch guide (6) and the cylinder (1), one end of a punch (3) is connected to the piston (2), and the other end of the punch (3) extends through the frame (5) and into the punch guide (6); characterized in that: Includes a buffer pad body (4), which is embedded in the frame (5) through the mounting surface (41), such that the contact surface (42) facing away from the mounting surface (41) faces the piston (2). Two damping bodies (421) are provided on the contact surface (42) for contacting the piston (2) and providing buffer. A through groove (7) is opened in the middle of the buffer pad body (4) for the punch (3) to pass through. The through groove (7) is located between the two damping bodies (421). A vent groove (422) communicating with the through groove (7) is opened on the outer edge of the contact surface (42).

2. The nail gun buffer pad structure according to claim 1, characterized in that: Guide rings (21) are installed on the outer rings at both ends of the piston (2), and sealing rings (22) are installed on the outer rings of the piston (2) between the two guide rings (21). A gas chamber (8) is formed between the guide ring (21) on the side close to the buffer pad body (4) and the inner wall of the cylinder (1). The gas chamber (8) is connected to the through groove (7) through the ventilation groove (422).

3. The nail gun buffer pad structure according to claim 1, characterized in that: The frame (5) has an installation cavity (51) and the mounting surface (41) of the buffer pad body (4) is embedded in the installation cavity (51), and the contact surface (42) is exposed in the installation cavity (51) and extends into the cylinder (1).

4. The nail gun buffer pad structure according to claim 3, characterized in that: The mounting cavity (51) also has a through groove (7) which corresponds to the position of the through groove (7) on the buffer pad body (4) for the punch (3) to pass through.

5. The nail gun buffer pad structure according to claim 3, characterized in that: The mounting cavity (51) is provided with at least one positioning groove (52), and a positioning protrusion (411) is provided on the mounting surface (41) at a position corresponding to the positioning groove (52) so that the buffer pad body (4) and the frame (5) are positioned together.

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