Nail shooting device

Abstract

The utility model provides a nail shooting device. The nail shooting device comprises a driving assembly, a transmission assembly and a striking assembly. The transmission assembly comprises a chain wheel and a limiting part. The chain wheel comprises a first rotating part, a second rotating part and a plurality of tooth pins located between the first rotating part and the second rotating part. The limiting part is configured to be capable of moving by being attached to one tooth pin and capable of being embedded into the two adjacent tooth pins. According to the nail shooting device, the limiting part is arranged and can be embedded into the two adjacent tooth pins on the chain wheel, so that the chain wheel cannot rotate reversely, and mistaken shooting of a shoot nail is avoided. Compared with a ratchet wheel structure, the number of parts of the limiting part of the nail shooting device is small, the structure is simpler, and the whole structure of the nail shooting device can be simplified easily.

Description

Technical Field

[0001] This application relates to the technical field of power tools, and particularly to a nail gun. Background Art

[0002] A nail gun is a fastening tool for driving nails into a building body and is widely used in industries such as woodworking and construction. The working principle of the nail gun is generally as follows: Start the motor, and drive the firing pin through a transmission mechanism to drive the piston to compress air from the initial locked position. After the firing pin disengages from the engagement with the transmission mechanism, the firing pin is released to strike the nail, so that the row of nails is ejected from the nozzle.

[0003] When the power of the motor is insufficient, the situation of motor reverse is likely to occur, resulting in accidental firing of the firing pin. To prevent the above situation, most of the existing technologies use a ratchet mechanism as a safety insurance device to prevent motor reverse. However, the ratchet mechanism often has a complex structure, a large number of parts, and is inconvenient to assemble. Summary of the Utility Model

[0004] In view of this, this application proposes a nail gun, which has a simple and reliable safety insurance device.

[0005] An embodiment of this application provides a nail gun for driving a nail along a striking direction. The nail gun includes a driving assembly, a transmission assembly, and a striking assembly. The driving assembly includes an output shaft. The transmission assembly includes a sprocket and a limiting portion. The sprocket includes a first rotating portion, a second rotating portion, and a plurality of tooth pins located between the first rotating portion and the second rotating portion. The first rotating portion and the second rotating portion are sleeved on the output shaft, so that the sprocket can rotate driven by the output shaft. The limiting portion is configured to be movable in contact with one tooth pin and can be inserted into two adjacent tooth pins. The striking assembly includes a firing pin, and the firing pin is configured to cooperate with the sprocket. The rotation of the sprocket can drive the firing pin to move in a direction opposite to the striking direction. After the firing pin disengages from the cooperation with the sprocket, it will move along the striking direction, thereby pushing the nail to be driven out along the striking direction.

[0006] In one embodiment, the limiting portion includes a stopper and an elastic member. The stopper includes a body portion and a resisting portion connected to the body portion. A groove is provided at one end of the body portion away from the resisting portion, and one end of the elastic member abuts against the groove. The resisting portion is configured to be movable in contact with the tooth pin and can be inserted into two adjacent tooth pins.

[0007] In one embodiment, the abutting portion has an abutting surface and a sliding surface. The abutting surface is the surface of the abutting portion away from the main body portion, and the sliding surface is connected between the abutting surface and the main body portion. The transmission assembly has a first state and a second state. When the transmission assembly is in the first state, the sliding surface fits and slides along a tooth pin. When the transmission assembly is in the second state, the abutting portion is embedded between two adjacent tooth pins, and the abutting surface is tangent to the side surface of one of the tooth pins.

[0008] In one embodiment, the first rotating portion is provided with a first through hole, and the second rotating portion is provided with a second through hole. The first through hole and the second through hole are coaxially arranged, and the first rotating portion and the second rotating portion are respectively sleeved on the output shaft through the first through hole and the second through hole.

[0009] In one embodiment, the first rotating portion is further provided with a plurality of first openings, and the plurality of first openings are arranged around the first through hole with the first through hole as the center. The second rotating portion is further provided with a plurality of second openings, and the plurality of second openings are arranged around the second through hole with the second through hole as the center. Each tooth pin is provided with a third opening, and each third opening is coaxially arranged with a first opening and a second opening. The sprocket further includes a plurality of pins, and each pin is inserted into a first opening, a third opening and a second opening to fasten the first rotating portion, the tooth pin and the second rotating portion.

[0010] In one embodiment, the striker is provided with a plurality of protruding tooth blocks. The tooth pin is configured to be engageable with the tooth blocks to drive the striker to move.

[0011] In one embodiment, the nail gun further includes an outer cylinder and an inner cylinder. A first cavity is formed in the outer cylinder, a part of the inner cylinder is received in the first cavity, and the other part extends out of the first cavity. A second cavity is formed in the inner cylinder, and the first cavity is communicated with the second cavity.

[0012] In one embodiment, the striking assembly further includes a piston. One end of the striker is connected to the piston, the end of the striker close to the piston and the piston are received in the second cavity, and the striker and the piston are configured to be movable in the second cavity.

[0013] In one embodiment, the nail gun further includes a mounting bracket. The mounting bracket includes a connecting portion and a supporting portion. The connecting portion is fixed to one end of the inner cylinder body located outside the outer cylinder body. The supporting portion includes a bottom wall and a first side wall and a second side wall which are oppositely arranged on the bottom wall. One end of the bottom wall and the first side wall is fixed to the surface of the connecting portion facing away from the inner cylinder body. The firing pin passes through the connecting portion and extends to the supporting portion, and then extends out of the supporting portion.

[0014] In one embodiment, the mounting bracket further includes a first mounting seat and a second mounting seat. The first mounting seat is arranged between the second side wall and the connecting portion, and the sprocket is arranged on the first mounting seat. The second mounting seat is arranged on the surface of the second side wall facing away from the first side wall, and the second mounting seat is provided with a third through hole. The third through hole penetrates through the second mounting seat along the extending direction of the firing pin, and a part of the limiting portion is received in the third through hole.

[0015] In the nail gun of the present application, by providing the limiting portion, the limiting portion can be embedded into two adjacent tooth pins on the sprocket, so that the sprocket cannot reverse, thereby avoiding the accidental firing of nails. Compared with the ratchet structure, the number of parts of the limiting portion of the nail gun of the present application is small, and the structure is simpler, which helps to simplify the overall structure of the nail gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a nail gun provided by an embodiment of the present application.

[0017] Figure 2 For Figure 1 It is a schematic structural diagram of the nail gun shown from another perspective after removing some structures.

[0018] Figure 3 For Figure 1 It is an exploded schematic diagram of some structures of the nail gun shown.

[0019] Figure 4 For Figure 2 It is a sectional view of the structure shown in the first state.

[0020] Figure 5 For Figure 2 It is a sectional view of the structure shown in the second state.

[0021] Figure 6 For Figure 1 It is a sectional view of the stopper of the nail gun shown.

[0022] MAIN ELEMENT SYMBOL DESCRIPTION

[0023] Nail gun 100

[0024] Housing 10

[0025] Drive assembly 20

[0026] Transmission assembly 30

[0027] Striking assembly 40

[0028] Battery 50

[0029] Magazine 60

[0030] Outer cylinder body 70

[0031] First cavity 701

[0032] Inner cylinder body 80

[0033] Second cavity 801

[0034] Mounting bracket 90

[0035] Sprocket 31

[0036] Limiting part 32

[0037] First rotating part 311

[0038] Second rotating part 312

[0039] Tooth pin 313

[0040] Dowel pin 314

[0041] Stop block 321

[0042] Elastic part 322

[0043] Connecting part 323

[0044] Fastening part 324

[0045] First through hole 3110

[0046] First opening 3111

[0047] Second through hole 3120

[0048] Second opening 3121

[0049] Third opening 3130

[0050] Body part 3211

[0051] Abutting part 3212

[0052] Groove 3213

[0053] Contact surface 3214

[0054] Sliding surface 3215

[0055] Firing pin 41

[0056] Piston 42

[0057] Tooth block 411

[0058] Tooth groove 412

[0059] Connecting part 91

[0060] Support part 92

[0061] First mounting seat 93

[0062] Second mounting seat 94

[0063] Bottom wall 921

[0064] First side wall 922

[0065] Second side wall 923

[0066] Third through hole 940

[0067] The following specific embodiments will further illustrate the embodiments of the present application in conjunction with the above drawings. Specific embodiments

[0068] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the embodiments of the present application belong. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present application. For those conditions not specified in the embodiments, they are carried out according to the conventional conditions or the conditions recommended by the manufacturer. For the reagents or instruments not specified by the manufacturer, they are all conventional products that can be obtained through commercial purchase.

[0069] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If this specific posture changes, the directional indications will also change accordingly.

[0070] It will be understood that when a layer is referred to as being "on" another layer, it can be directly on the other layer or there may be an intermediate layer therebetween. On the contrary, when a layer is referred to as being "directly on" another layer, there is no intermediate layer. When a component is referred to as being "fixed to", "mounted on", "disposed on" another component, it can be directly on the other component or there may also be an intermediate component. The term "and / or" used herein includes all and any combinations of one or more of the related listed items.

[0071] Embodiments of the present application are described herein with reference to sectional views, which are schematic views of idealized embodiments (and intermediate configurations) of the present application. Thus, differences in the shapes shown due to manufacturing processes and / or tolerances are foreseeable. Therefore, the embodiments of the present application should not be construed as limited to the specific shapes of the regions shown herein, but should include, for example, deviations in shape resulting from manufacturing. The regions shown in the figures are themselves merely schematic, their shapes are not intended to illustrate the actual shape of the device, and are not intended to limit the scope of the present application.

[0072] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0073] Please refer to Figure 1 and Figure 2 As shown in and, an embodiment of the present application provides a nail gun 100 for firing nails and driving the nails into a building body along a striking direction. The nail gun 100 includes a housing 10, a driving assembly 20, a transmission assembly 30, and a striking assembly 40. The driving assembly 20, the transmission assembly 30, and the striking assembly 40 are all housed in the housing 10 to protect the above components. The driving assembly 20 may include a motor (not shown in the figure), and the motor may include an output shaft (not shown in the figure). The driving assembly 20 is used to provide power for the transmission assembly 30, and the transmission assembly 30 can rotate under the drive of the driving assembly 20. When the transmission assembly 30 rotates, it can drive the striking assembly 40 to move in the opposite direction of the striking direction, so that the striking assembly 40 stores energy. After the striking assembly 40 completes energy storage, the striking assembly 40 can move along the striking direction, so as to drive the nail out along the striking direction. It can be understood that the nail gun 100 further includes components such as a battery 50, a nail magazine 60, a control board, a circuit, and a switch (not fully shown in the figure), which are all installed inside and on the surface of the housing 10. The battery 50 can supply power to the driving assembly 20, the control board, etc. The battery 50 can be, but is not limited to, a secondary battery such as a storage battery or a lithium battery, and the present application does not make any limitations. The nail magazine 60 is used to store nails.

[0074] Please refer to Figure 2 and Figure 3, the transmission assembly 30 includes a sprocket 31 and a limiting portion 32. The sprocket 31 includes a first rotating portion 311, a second rotating portion 312, and a plurality of tooth pins 313 located between the first rotating portion 311 and the second rotating portion 312. The tooth pins 313 can be cylindrical. The first rotating portion 311 and the second rotating portion 312 are stacked along the thickness direction of the first rotating portion 311 (i.e., the thickness direction of the second rotating portion 312), and there is a certain distance between them, which exactly accommodates the tooth pins 313. That is, the height direction of the tooth pins 313 is the thickness direction of the first rotating portion 311 or the second rotating portion 312. Along the height direction of the tooth pins 313, one end of the tooth pins 313 is connected to the first rotating portion 311, and the other end of the tooth pins 313 is connected to the second rotating portion 312. The structures of the first rotating portion 311 and the second rotating portion 312 are substantially the same, and the orthographic projections of the first rotating portion 311 and the second rotating portion 312 can exactly overlap. The first rotating portion 311 and the second rotating portion 312 are sleeved on the output shaft of the motor, so that the first rotating portion 311 and the second rotating portion 312 (sprocket 31) can rotate driven by the output shaft.

[0075] Please refer to Figure 4 , the transmission assembly 30 is in the first state, and at this time, the limiting portion 32 can move by attaching to one tooth pin 313. Please refer to Figure 5 , the transmission assembly 30 is in the second state. At this time, the limiting portion 32 is embedded in two adjacent tooth pins 313 (i.e., the limiting portion 32 is in contact with and has a force on two adjacent tooth pins 313). The thickness of the limiting portion 32 can be equal to or slightly less than the distance between the first rotating portion 311 and the second rotating portion 312, so that along the thickness direction of the first rotating portion 311, the limiting portion 32 can exactly insert between the first rotating portion 311 and the second rotating portion 312. The transmission assembly 30 can continuously switch between the first state and the second state. That is, when the sprocket 31 of the transmission assembly 30 starts to rotate under the action of the motor (for example, rotates clockwise), the limiting portion 32 will rotate by attaching to one tooth pin 313 (the first state), and then as the rotation progresses, the limiting portion 32 will insert between this tooth pin 313 and the tooth pin 313 adjacent to it (the second state). Then, as the sprocket 31 continues to rotate, the limiting portion will continue to move by attaching to the adjacent tooth pin 313 (the first state) and insert between this adjacent tooth pin 313 and another adjacent tooth pin 313 (the second state), and so on.

[0076] Please refer to Figures 3 to 5 , the striking assembly 40 includes a firing pin 41, and the firing pin 41 can be arranged on one side of the sprocket 31. The firing pin 41 is generally rod-shaped, and its extending direction is parallel to the striking direction of the nail. The firing pin 41 can cooperate with the sprocket 31, and the rotation of the sprocket 31 can drive the firing pin 41 to move in the direction opposite to the striking direction. The striking direction is Figure 4 and Figure 5The direction from bottom to top in the middle, the direction opposite to the striking direction is Figure 4 and Figure 5 The direction from top to bottom in the middle. After the firing pin 41 disengages from the cooperation with the sprocket 31, it will move along the striking direction, thereby pushing the nail out along the striking direction.

[0077] As Figure 5 shown, when the limiting part 32 is embedded in two adjacent tooth pins 313, if the motor suddenly loses power and cannot continue to drive the sprocket 31 to rotate forward (for example, rotate clockwise), since the limiting part 32 has been embedded in two adjacent tooth pins 313, at this time the sprocket 31 cannot rotate backward either (for example, rotate counterclockwise), and the firing pin 41 will not move along the striking direction, thus avoiding the accidental firing of the nail.

[0078] In some embodiments, as Figure 3 and Figure 4 shown, the limiting part 32 includes a stop block 321 and an elastic member 322. The stop block 321 includes a body part 3211 and a resisting part 3212 connected to the body part 3211, and the body part 3211 is generally cylindrical. As Figure 6 shown, a groove 3213 is provided at one end of the body part 3211 away from the resisting part 3212, and one end of the elastic member 322 abuts against the groove 3213. The resisting part 3212 can move along with the tooth pin 313 and can be embedded in two adjacent tooth pins 313. After the resisting part 3212 is embedded in two adjacent tooth pins 313, as the sprocket 31 continues to rotate forward, the resisting part 3212 will move along the side surface of the tooth pin 313 under the action of the elastic member 322. The elastic member 322 can be but is not limited to a spring.

[0079] In some embodiments, as Figure 3 and Figure 6 shown, the resisting part 3212 is of a special shape and can be formed by bending a cylinder. The resisting part 3212 has a contact surface 3214 and a sliding surface 3215. The contact surface 3214 is the surface of the resisting part 3212 that is far from the body part 3211, and the contact surface 3214 is not connected to the body part 3211. The contact surface 3214 can be a plane. The sliding surface 3215 is connected between the contact surface 3214 and the body part 3211, and the sliding surface 3215 can be an arc surface.

[0080] Further, as Figure 4 and Figure 6 shown, when the transmission component 30 is in the first state, the sliding surface 3215 of the resisting part 3212 can slide along a tooth pin 313. As Figure 5 and Figure 6 shown, when the transmission component 30 is in the second state, the resisting part 3212 is embedded in two adjacent tooth pins 313, and the contact surface 3214 is in contact with and tangent to the side surface of one of the tooth pins 313.

[0081] In some embodiments, as Figure 3 shown, the first rotating part 311 is generally an irregular circle, and its outer periphery has a plurality of arc segments recessed inward (towards the center of the circle). The second rotating part 312 is also an irregular circle, and its outer periphery has a plurality of arc segments recessed inward (towards the center of the circle). A first through hole 3110 penetrating the first rotating part 311 along its thickness direction is provided on the first rotating part 311, and a second through hole 3120 penetrating the second rotating part 312 along its thickness direction is provided on the second rotating part 312. The first through hole 3110 and the second through hole 3120 are coaxially arranged, and the first rotating part 311 and the second rotating part 312 are respectively sleeved on the output shaft (not shown in the figure) of the motor through the first through hole 3110 and the second through hole 3120.

[0082] Further, as Figure 3 shown, the first rotating part 311 is further provided with a plurality of first openings 3111. The first openings 3111 can penetrate or partially penetrate the first rotating part 311 along the thickness direction of the first rotating part 311, and the plurality of first openings 3111 are arranged around the first through hole 3110 with the first through hole 3110 as the center. The second rotating part 312 is further provided with a plurality of second openings 3121 penetrating the second rotating part 312 along its thickness direction, and the plurality of second openings 3121 are arranged around the second through hole 3120 with the second through hole 3120 as the center. Each tooth pin 313 is provided with a third opening 3130, and the third opening 3130 penetrates the tooth pin 313 along the height direction of the tooth pin 313. Each third opening 3130 is coaxially arranged with a first opening 3111 and a second opening 3121. The sprocket 31 further includes a plurality of pins 314, and each pin 314 is inserted into a second opening 3121, a third opening 3130 and a first opening 3111 to fasten the second rotating part 312, the tooth pin 313 and the first rotating part 311.

[0083] In some embodiments, as Figure 4 and Figure 5 shown, the striker 41 is provided with a plurality of protruding tooth blocks 411. The tooth blocks 411 face the sprocket 31, and a tooth groove 412 is formed between two adjacent tooth blocks 411. The tooth pins 313 on the sprocket 31 can be engaged with the tooth blocks 411 (that is, the tooth pins 313 and the tooth blocks 411 are mutually engaged during the transmission process), so as to drive the striker 41 to move.

[0084] Further, the number of the tooth pins 313 is the same as the number of the tooth blocks 411. For example, as Figure 4 and Figure 5As shown, the number of tooth pins 313 is six, and the number of tooth blocks 411 is also six. Along the clockwise direction, the tooth pins 313 can be marked as the first tooth pin, the second tooth pin... and the Nth tooth pin (N is an integer greater than or equal to 3). The distance between the center of the first tooth pin and the center of the second tooth pin is equal to the distance between the center of the (N - 1)th tooth pin and the center of the Nth tooth pin, but is much smaller than the distance between the center of the first tooth pin and the center of the Nth tooth pin. Taking the center of the first through hole 3110 (or the second through hole 3120) as the center of the circle, the arc segment formed by the centers of the (N - 1)th tooth pin and the Nth tooth pin has a circumference approximately equal to the distance between the centers of two adjacent tooth blocks 411, so as to better mesh between the tooth pins 313 and the tooth blocks 411. The arc segment formed by the centers of the first tooth pin and the Nth tooth pin has a circumference approximately equal to the distance between the centers of the two tooth blocks 411 that are farthest apart. In this way, the striker 41 can disengage from the engagement (mating) with the sprocket 31, and thus the striker 41 can move along the striking direction to push out the nail.

[0085] In some embodiments, as Figure 2 , Figure 4 and Figure 5 shown, the nail gun 100 further includes an outer cylinder body 70 and an inner cylinder body 80. Both the outer cylinder body 70 and the inner cylinder body 80 can be hollow cylindrical. A first cavity 701 is formed inside the outer cylinder body 70. A part of the inner cylinder body 80 is received in the first cavity 701, and the other part extends out of the first cavity 701. A second cavity 801 is formed inside the inner cylinder body 80, and the first cavity 701 communicates with the second cavity 801.

[0086] In some embodiments, as Figures 3 to 5 shown, the striking assembly 40 further includes a piston 42. One end of the striker 41 is connected to the piston 42, and the other end is used to strike the nail. The end of the striker 41 close to the piston 42 and the piston 42 are received in the second cavity 801, and the striker 41 and the piston 42 can move in the second cavity 801. When the transmission assembly 30 rotates clockwise, it will drive the striker 41 and the piston 42 to move in the second cavity 801 in the direction opposite to the striking direction (i.e., Figure 4 and Figure 5 the direction from top to bottom in the figure), so as to compress and store energy for the gas in the second cavity 801 and the first cavity 701. When the last tooth pin 313 meshes with the last tooth block 411, the energy storage is completed. At this time, the sprocket 31 and the striker 41 are in an empty tooth state, and the striker 41 in this state can be driven by the energy obtained from the compressed gas to move along the striking direction, thereby driving out the nail.

[0087] In some embodiments, as Figure 2 and Figure 3As shown, the nail gun 100 further includes a mounting bracket 90, and the mounting bracket 90 includes a connecting portion 91 and a supporting portion 92. The connecting portion 91 is generally cylindrical (with a relatively short height), and is fixed to one end of the inner cylinder 80 located outside the outer cylinder 70. The axial directions of the connecting portion 91, the inner cylinder 80, and the outer cylinder 70 can be parallel to the extending direction of the firing pin 41. The firing pin 41 can pass through the connecting portion 91. The supporting portion 92 includes a bottom wall 921 and a first side wall 922 and a second side wall 923 which are oppositely arranged on the bottom wall 921. One end of the bottom wall 921 and the first side wall 922 is fixed to the surface of the connecting portion 91 facing away from the inner cylinder 80, and one end of the second side wall 923 close to the connecting portion 91 is not in contact with the connecting portion 91. After passing through the connecting portion 91, the firing pin 41 extends into the accommodating space formed by surrounding the bottom wall 921, the first side wall 922, and the second side wall 923, and then extends out of the accommodating space.

[0088] In some embodiments, as Figure 3 and Figure 4 shown, the mounting bracket 90 further includes a first mounting seat 93 and a second mounting seat 94. The first mounting seat 93 can be circular ring-shaped and can be fixed between the second side wall 923 and the connecting portion 91, and the sprocket 31 is arranged on the first mounting seat 93. A second mounting seat 94 is provided on the surface of the second side wall 923 facing away from the first side wall 922, and the second mounting seat 94 can be rectangular block-shaped. The second mounting seat 94 is provided with a third through hole 940, and the third through hole 940 penetrates through the second mounting seat 94 along the extending direction of the firing pin 41, and a part of the limiting portion 32 is received in the third through hole 940. Specifically, the limiting portion 32 can further include a connecting member 323 and a fastening member 324. One end of the elastic member 322 away from the stopper 321 can be fixed to the connecting member 323, and the connecting member 323 can be used to abut against the elastic member 322 and limit the compression space of the elastic member 322. The connecting member 323 is partially inserted into the third through hole 940 and can be fixed in the third through hole 940 by a fastening member 324. The fastening member 324 can be but is not limited to a pin.

[0089] In the nail gun 100 according to the embodiment of the present application, by providing the limiting portion 32, the limiting portion 32 can be embedded into two adjacent tooth pins 313 on the sprocket 31, so that the sprocket 31 cannot reverse, thereby avoiding the misfiring of nails. Compared with the ratchet structure, the limiting portion 32 of the nail gun 100 of the present application has fewer parts and a simpler structure, which helps to simplify the overall structure of the nail gun 100.

[0090] The above description is some specific embodiments of the present application, but in the actual application process, it cannot be limited to these embodiments only. For those of ordinary skill in the art, other deformations and changes made according to the technical concept of the present application should all fall within the protection scope of the present application.

Claims

1. A nail shooter, used for driving nails in a striking direction, characterized in that: The nail shooter comprises: a drive assembly including an output shaft; A transmission assembly, comprising a sprocket and a limiting portion; the sprocket comprises a first rotating portion, a second rotating portion and a plurality of tooth pins located between the first rotating portion and the second rotating portion, the first rotating portion and the second rotating portion are sleeved on the output shaft, so that the sprocket can rotate under the drive of the output shaft; the limiting portion is configured to move in contact with a tooth pin and can be embedded in two adjacent tooth pins; and The striking assembly includes a firing pin, which is configured to cooperate with the sprocket. The rotation of the sprocket can drive the firing pin to move in a direction opposite to the striking direction. After the firing pin is disengaged from the sprocket, it will move in the striking direction, thereby pushing the nail to be driven out along the striking direction.

2. The nail shooter according to claim 1, characterized in that: The limiting portion includes a stopper and an elastic member, the stopper includes a main body and a supporting portion connected to the main body, a groove is provided at one end of the main body away from the supporting portion, one end of the elastic member is supported in the groove, and the supporting portion is configured to be able to move in accordance with the tooth pin and to be embedded in two adjacent tooth pins.

3. The nail shooter according to claim 2, characterized in that: The abutting portion has an abutting surface and a sliding surface, wherein the abutting surface is the surface of the abutting portion away from the main body portion, and the sliding surface is connected between the abutting surface and the main body portion; the transmission assembly has a first state and a second state, and when the transmission assembly is in the first state, the sliding surface slides in contact with a tooth pin; when the transmission assembly is in the second state, the abutting portion is embedded in two adjacent tooth pins, and the abutting surface is tangent to the side surface of one of the tooth pins.

4. The nail shooter according to claim 1, characterized in that: The first rotating part is provided with a first through hole, the second rotating part is provided with a second through hole, the first through hole and the second through hole are coaxially arranged, and the first rotating part and the second rotating part are sleeved on the output shaft through the first through hole and the second through hole respectively.

5. The nail shooter according to claim 4, characterized in that: The first rotating part is also provided with a plurality of first openings, which are arranged around the first through hole with the first through hole as the center; the second rotating part is also provided with a plurality of second openings, which are arranged around the second through hole with the second through hole as the center; each tooth pin is provided with a third opening, and each third opening is coaxially arranged with a first opening and a second opening; the sprocket also includes a plurality of latches, each of which is inserted into a first opening, a third opening and a second opening to fasten the first rotating part, the tooth pin and the second rotating part.

6. The nail shooter according to claim 1, characterized in that: The striker is provided with a plurality of protruding tooth blocks, and the tooth pin is configured to be engaged with the tooth blocks, thereby driving the striker to move.

7. The nail shooter according to claim 1, characterized in that: The nail shooter also includes an outer cylinder and an inner cylinder. A first cavity is formed in the outer cylinder. A portion of the inner cylinder is accommodated in the first cavity, and another portion extends out of the first cavity. A second cavity is formed in the inner cylinder. The first cavity is connected to the second cavity.

8. The nail shooter according to claim 7, characterized in that: The striking assembly further includes a piston, one end of the striker is connected to the piston, the end of the striker close to the piston and the piston are accommodated in the second cavity, and the striker and the piston are configured to be movable in the second cavity.

9. The nail shooting device according to claim 7, characterized in that: The nail shooter also includes a mounting frame, which includes a connecting portion and a supporting portion, wherein the connecting portion is fixed to one end of the inner cylinder body located outside the outer cylinder body; the supporting portion includes a bottom wall and a first side wall and a second side wall arranged on the bottom wall and opposite to each other, wherein one end of the bottom wall and the first side wall are fixed to the surface of the connecting portion facing away from the inner cylinder body, and the firing pin passes through the connecting portion and extends to the supporting portion, and then extends out from the supporting portion.

10. The nail shooting device according to claim 9, characterized in that: The mounting frame also includes a first mounting seat and a second mounting seat, the first mounting seat is arranged between the second side wall and the connecting portion, and the sprocket is arranged on the first mounting seat; the second mounting seat is provided on the surface of the second side wall away from the first side wall, and the second mounting seat is provided with a third through hole, the third through hole passes through the second mounting seat along the extension direction of the striker, and part of the limiting portion is accommodated in the third through hole.

Images