Nail gun

Abstract

The invention provides a nail gun. The nail gun comprises a machine shell, a component to be cooled, an air cylinder and a firing pin, and a first containing cavity and a second containing cavity which communicate with each other are formed in the machine shell; a to-be-cooled component is arranged in the first accommodating cavity; a piston is arranged in the air cylinder, an air outlet is formed in the air cylinder, and the end, provided with the air outlet, of the air cylinder is arranged in the second containing cavity; the firing pin can be movably arranged on the machine shell in the axial direction of the air cylinder, and one end of the firing pin extends into the end, provided with the air outlet hole, of the air cylinder and is connected with the piston. According to the nail gun, the air exhausted from the air outlet of the air cylinder is utilized, the air in the air cylinder can be guided into the first containing cavity after being exhausted into the second containing cavity, so that the to-be-cooled part in the first containing cavity is cooled, the air exhausted from the air cylinder is utilized for cooling the to-be-cooled part, and the heat dissipation efficiency of the to-be-cooled part is improved. The overall heat dissipation capacity of the nail gun can be improved, the service life of elements is prolonged, and cyclic utilization of energy is achieved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of electric tools, and in particular to a nail gun. Background Art

[0002] Nail guns are mainly used in the construction, interior decoration and other industries. Their working principle is: when the gun nozzle is pressed down and the switch is pressed, the motor is started, and the firing pin is driven from the initial locked ready position through the firing pin drive mechanism to drive the piston backward to compress the air. After the firing pin is disengaged from the firing pin drive mechanism, it is suddenly released to hit the row of nails in the nail magazine that are pushed into the nail seat by the nail pusher, causing them to shoot out from the gun nozzle.

[0003] During use, the striker mainly drives nails by compressing the piston to squeeze the gas pre-stored in the cylinder to provide air pressure. During the nailing process, the air pressure on the side of the piston striker forward is connected to the atmospheric pressure. When the piston moves at a high speed, the gas on the forward side of the piston is in a small space and is instantly squeezed, and the air pressure rises instantly. If it cannot be discharged in time, it will affect the nailing force of the striker. Therefore, there is a common technology on the market that releases the gas in the cylinder by increasing the size of the outlet air hole on the cylinder. The cycle is repeated, and the gas discharged from the cylinder cannot be directly used, so some kinetic energy will be wasted. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a nail gun, aiming to solve the problem that the gas exhausted from the cylinder of the existing nail gun cannot be directly utilized, resulting in partial waste of kinetic energy.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides a nail gun, comprising:

[0006] A casing, wherein a first accommodating cavity and a second accommodating cavity that are connected to each other are formed in the casing;

[0007] A component to be cooled, wherein the component to be cooled is arranged in the first accommodating cavity;

[0008] A cylinder, wherein a piston is disposed in the cylinder, an air outlet is opened at one end of the cylinder, and the end of the cylinder with the air outlet is disposed in the second accommodating chamber;

[0009] A striker, wherein the striker is movably arranged on the housing along the axial direction of the cylinder, one end of the striker extends into one end of the cylinder where the air outlet is opened and is connected to the piston, so that when the striker drives the piston to move toward the air outlet, the gas in the cylinder is discharged from the air outlet to the second accommodating chamber, and then enters the first accommodating chamber to dissipate heat to the component to be cooled.

[0010] Preferably, the component to be cooled comprises a striker drive mechanism, and the striker drive mechanism is connected to the striker by power coupling, so as to drive the striker to move through the striker drive mechanism.

[0011] Preferably, an air outlet connected to the first accommodating chamber is provided on the casing; the striker driving mechanism includes a motor and a gear box, and the motor shaft of the motor is connected to the striker through the gear box; one of the motor and the gear box is arranged near the connection between the first accommodating chamber and the second accommodating chamber, and the other is arranged near the air outlet.

[0012] Preferably, the first accommodating chamber is located on a side of the second accommodating chamber close to the air outlet in the axial direction of the cylinder.

[0013] Preferably, a partition rib is protruding on the inner shell wall of the casing, and the partition rib abuts against the side of the cylinder close to the air outlet in the axial direction. The partition rib forms the first accommodating chamber and the second accommodating chamber on both sides of the cylinder in the axial direction, respectively, and a connecting hole connecting the first accommodating chamber and the second accommodating chamber is opened on the partition rib.

[0014] Preferably, the nail gun also includes a blocking piece, which can be movably arranged on the casing; when the blocking piece is located at a first position, the blocking piece blocks the connection between the first accommodating chamber and the second accommodating chamber, and the first accommodating chamber is disconnected from the second accommodating chamber; when the blocking piece is located at a second position, the blocking piece opens the connection between the first accommodating chamber and the second accommodating chamber, and the first accommodating chamber is connected to the second accommodating chamber.

[0015] Preferably, the blocking member is located on one side of the connection between the first accommodating chamber and the second accommodating chamber in the axial direction of the cylinder, and the blocking member is slidably provided on the casing along the axial direction of the cylinder.

[0016] Preferably, a switch is provided in the housing, and the nail gun further comprises a button movably provided on the housing, the button being provided corresponding to the switch so that the switch can be triggered by pressing the button;

[0017] The blocking member is slidably disposed on the housing along the pressing direction of the button, and one end of the blocking member away from the connection between the first accommodating cavity and the second accommodating cavity is connected to the button so that the blocking member is driven to slide by the button;

[0018] When the button is in the release position, the button is separated from the switch, and the blocking member is located at the first position; when the button is in the pressed position, the button presses and triggers the switch, and the blocking member is located at the second position.

[0019] Preferably, the blocking member and the button are located on the same side of the cylinder in the radial direction, and the blocking member is located between the button and the cylinder; the blocking member comprises:

[0020] A main body, the main body extending along the pressing direction;

[0021] A connecting portion, the connecting portion is formed by bending and extending from one end of the main body close to the button toward the button, and the connecting portion is connected to the button;

[0022] The blocking portion is formed by bending and extending from one end of the main body away from the button toward the cylinder, and the blocking portion is located in the second accommodating cavity, and is used to block the connection between the first accommodating cavity and the second accommodating cavity.

[0023] Preferably, the main body, the connecting portion and the sealing portion are integrally injection molded.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The nail gun of the present invention utilizes the gas discharged from the air outlet of the cylinder. After the gas in the cylinder is discharged into the second accommodating chamber, it will be guided into the first accommodating chamber to dissipate heat for the components to be dissipated in the first accommodating chamber. In this way, the gas discharged from the cylinder is used to dissipate heat for the components to be dissipated, which can improve the heat dissipation capacity of the nail gun as a whole, increase the life of the components, and realize the recycling of energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0027] Figure 1 is a cross-sectional view of a nail gun in an embodiment of the present invention;

[0028] Figure 2 for Figure 1 Schematic diagram of the internal structure of the nail gun;

[0029] Figure 3 for Figure 2 Schematic diagram of gas flow in a nail gun;

[0030] Figure 4 for Figure 2 Schematic diagram of the structure after the middle blocking piece is moved;

[0031] Figure 5 for Figure 2 Exploded view of the cylinder, sealing piece and button.

[0032] Description of the accompanying drawings of the present invention:

[0033] Nail gun 100, casing 1, first accommodating chamber 11, first installation chamber 11a, second accommodating chamber 12, second installation chamber 12a, air outlet 13, dividing rib 14, connecting hole 15, gas channel 16, component to be dissipated 2, firing pin drive mechanism 2a, motor 21, gear box 22, cylinder 3, piston 31, air outlet 32, annular limiting protrusion 33, firing pin 4, blocking member 5, main body 51, connecting part 52, blocking part 53, switch 6, button 7, slot 71.

[0034] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0038] The present invention provides a nail gun 100, Figures 1 to 5 A preferred embodiment of the nail gun 100 provided by the present invention is shown.

[0039] See also Figures 1 to 3In this embodiment, the nail gun 100 includes a housing 1, a component to be cooled 2, a cylinder 3 and a firing pin 4.

[0040] See also Figures 1 to 3 A first accommodating chamber 11 and a second accommodating chamber 12 that are connected to each other are formed in the housing 1.

[0041] Specifically, the housing 1 is generally a hollow structure, and a partition structure is provided inside the housing 1 to form a plurality of installation cavities through the partition structure. One installation cavity can be used as the first accommodation cavity 11 or the second accommodation cavity 12; or a closed structure can be provided inside one installation cavity to form a closed space through the closed structure inside the installation cavity, and the closed space (i.e., part of the installation cavity) can be used as the first accommodation cavity 11 or the second accommodation cavity 12.

[0042] See also Figures 1 to 4 The heat dissipation component 2 is arranged in the first accommodating cavity 11 .

[0043] Specifically, the heat dissipation component 2 may be any one or more components on the nail gun 100 that need to dissipate heat. For example, the heat dissipation component 2 may include a firing pin drive mechanism 2a or a battery pack. Figures 1 to 4 In this embodiment, the heat dissipation component 2 includes a striker drive mechanism 2a, which is coupled to the striker 4 by power, so as to drive the striker 4 to move by the striker drive mechanism 2a. The striker drive mechanism 2a generates heat when it is in operation, so it is necessary to dissipate heat from the striker drive mechanism 2a. The following will take the striker drive mechanism 2a as an example of the heat dissipation component 2.

[0044] The striker drive mechanism 2a is disposed in the first accommodating chamber 11. The housing 1 is provided with a first mounting chamber 11a for mounting the striker drive mechanism 2a. The first accommodating chamber 11a may be the first mounting chamber 11a; the first accommodating chamber 11a may also be a part of the first mounting chamber 11a. Figures 1 to 4 In this embodiment, the first accommodating cavity 11 is a first installation cavity 11a.

[0045] See also Figures 1 to 5 A piston 31 is disposed in the cylinder 3 , an air outlet 32 ​​is opened at one end of the cylinder 3 , and the end of the cylinder 3 with the air outlet 32 ​​is disposed in the second accommodating chamber 12 .

[0046] Specifically, the cylinder 3 is provided with an air outlet 32 ​​at one end in the axial direction of the cylinder 3, and the air outlet 32 ​​is usually provided on the outer peripheral side of the cylinder 3, and one air outlet 32 ​​may be provided or multiple air outlets 32 may be provided at intervals along the circumference of the cylinder 3. The end of the cylinder 3 provided with the air outlet 32 ​​is provided in the second accommodating chamber 12, so that the interior of the cylinder 3 is connected with the second accommodating chamber 12 through the air outlet 32.

[0047] The piston 31 is slidably disposed in the cylinder 3 along the axial direction of the cylinder 3. When the piston 31 slides toward the gas outlet 32, the gas in the cylinder 3 is discharged from the gas outlet 32 ​​into the second accommodating chamber 12. The axial direction of the cylinder 3 is defined as the front-to-back direction, and the end of the cylinder 3 where the gas outlet 32 ​​is disposed is the front end of the cylinder 3. The piston 31 is slidably disposed in the cylinder 3 forward and backward.

[0048] The front end of the cylinder 3 is disposed in the second accommodating chamber 12, and the front end of the cylinder 3 is connected to the second accommodating chamber 12 through the air outlet 32. Figures 1 to 5 In this embodiment, a second installation cavity 12a is provided in the housing 1, and the cylinder 3 is installed in the second installation cavity 12a. The outer peripheral side surface of the front end of the cylinder 3 is fitted with the inner cavity wall of the second installation cavity 12a to enclose the front end of the second installation cavity 12a to form a second accommodating cavity 12.

[0049] Specifically, the shape of the second installation cavity 12a is usually compatible with the shape of the cylinder 3, and the front end of the cylinder 3 and the front end of the second installation cavity 12a are clearance-matched, so that the second accommodating cavity 12 is formed by the cylinder 3 at the front end of the second installation cavity 12a, and the gap between the front end of the cylinder 3 and the front end of the second installation cavity 12a is connected to the air outlet 32.

[0050] Optionally, see Figures 1 to 5 In this embodiment, an annular limiting protrusion 33 extending along the circumference of the cylinder 3 is convexly provided on the outer peripheral side surface of the cylinder 3, and the annular limiting protrusion 33 is located at the rear side of the gas outlet 32. The annular limiting protrusion 33 is in contact with the inner cavity wall of the second installation cavity 12a, so that the second accommodating cavity 12 is formed in the second installation cavity 12a through the annular limiting protrusion 33, and the second accommodating cavity 12 is located at the front side of the annular limiting protrusion 33. In this way, through the cooperation between the annular limiting protrusion 33 and the inner cavity wall of the second installation cavity 12a, a closed second accommodating cavity 12 can be formed at the front end of the second installation cavity 12a, thereby preventing the gas discharged from the cylinder 3 into the second accommodating cavity 12 from entering the rear end of the second installation cavity 12a, so that the gas discharged from the cylinder 3 into the second accommodating cavity 12 can enter more into the first accommodating cavity 11.

[0051] See also Figures 1 to 4The striker 4 is movably arranged on the casing 1 along the axial direction of the cylinder 3. One end of the striker 4 extends into one end of the cylinder 3 where an air outlet 32 ​​is opened and is connected to the piston 31. When the striker 4 drives the piston 31 to move toward the air outlet 32, the gas in the cylinder 3 is discharged from the air outlet 32 ​​to the second accommodating chamber 12, and then enters the first accommodating chamber 11 to dissipate heat to the heat dissipation component 2.

[0052] Specifically, the striker 4 is arranged to extend in the front-to-back direction, and the striker 4 is arranged on the housing 1 so as to be movable forward and backward. The rear end of the striker 4 is located in the second accommodating chamber 12, and the rear end of the striker 4 extends into the cylinder 3 and is connected to the piston 31. The front end of the striker 4 is used to strike the row of nails. The striker driving mechanism 2a is coupled to the middle part of the striker 4 by power, so that the striker 4 can be driven to move forward and backward through the striker driving mechanism 2a, so as to drive the piston 31 to slide forward and backward through the striker 4.

[0053] The housing 1 is usually provided with a switch 6 and a button 7, and the button 7 is provided corresponding to the switch 6 so that the switch 6 can be triggered by pressing the button 7. The switch 6 can be a micro switch, etc. The switch 6 and the button 7 are usually located on one side of the cylinder 3 in the radial direction of the cylinder 3. The direction from the button 7 to the cylinder 3 is defined as the up-down direction, and the button 7 is located on the lower side of the cylinder 3.

[0054] When the muzzle of the nail gun 100 is pressed down and the button 7 is pressed to trigger the switch 6, the firing pin drive mechanism 2a is activated, and the firing pin 4 is driven by the firing pin drive mechanism 2a to slide backward from the initial locked ready position to compress the air. After the firing pin 4 is disengaged from the firing pin drive mechanism 2a, the firing pin 4 is suddenly released and hits the row of nails pushed into the nail seat by the nail pusher in the nail magazine, causing them to be ejected from the muzzle.

[0055] During the nailing process, after the gas in the cylinder 3 and located in front of the piston 31 is discharged from the air outlet 32 ​​into the second accommodating chamber 12, since the second accommodating chamber 12 is connected to the first accommodating chamber 11, the gas discharged into the second accommodating chamber 12 will be guided into the first accommodating chamber 11 to dissipate heat for the heat-dissipating component 2 in the first accommodating chamber 11. In this way, the heat dissipation capacity of the nail gun 100 can be improved, the service life of the components can be increased, and the recycling of energy can be realized.

[0056] The nail gun 100 of the present invention utilizes the gas discharged from the cylinder 3 from the air outlet 32. After the gas in the cylinder 3 is discharged into the second accommodating chamber 12, it will be guided into the first accommodating chamber 11 to dissipate heat for the heat dissipation component 2 in the first accommodating chamber 11. In this way, the heat dissipation capacity of the nail gun 100 can be improved, the service life of the components can be increased, and the recycling of energy can be realized.

[0057] The housing 1 is provided with a first accommodating chamber 11 and a second accommodating chamber 12. The specific arrangement of the first accommodating chamber 11 and the second accommodating chamber 12 can be set according to actual conditions. The first accommodating chamber 11 can be located on one side of the second accommodating chamber 12 in the axial direction of the cylinder 3, for example, the first accommodating chamber 11 is located on the front side or the rear side of the second accommodating chamber 12; the first accommodating chamber 11 can also be located on one side of the second accommodating chamber 12 in the radial direction of the cylinder 3, for example, the first accommodating chamber 11 is located on the upper side or the lower side of the second accommodating chamber 12. Optionally, please refer to Figures 1 to 4 In this embodiment, the first accommodating chamber 11 is located on a side of the second accommodating chamber 12 close to the air outlet 32 ​​in the axial direction of the cylinder 3 .

[0058] Specifically, the first accommodating chamber 11 is located on the front side of the second accommodating chamber 12. The first accommodating chamber 11 is usually extended in the up and down directions. The second accommodating chamber 12 is opposite to the upper end of the first accommodating chamber 11 front and back. Such an arrangement of the first accommodating chamber 11 and the second accommodating chamber 12 can make the first accommodating chamber 11 close to the air outlet 32, thereby shortening the path of the gas flowing through the air outlet 32 ​​→ the second accommodating chamber 12 → the first accommodating chamber 11, so that more gas discharged from the air outlet 32 ​​can enter the first accommodating chamber 11.

[0059] For further information, see Figures 1 to 4 In this embodiment, a partition rib 14 is protruded on the inner shell wall of the casing 1, and the partition rib 14 abuts against the side of the cylinder 3 close to the air outlet 32 ​​in the axial direction. The partition rib 14 forms a first accommodating chamber 11 and a second accommodating chamber 12 on both sides of the cylinder 3 in the axial direction, and a connecting hole 15 connecting the first accommodating chamber 11 and the second accommodating chamber 12 is opened on the partition rib 14.

[0060] Specifically, the partition rib 14 is the front cavity wall of the second installation cavity 12a (i.e., the second accommodating cavity 12), and the partition rib 14 is located at the front side of the cylinder 3, and the partition rib 14 abuts against the front end surface of the cylinder 3. An avoidance hole is provided on the partition rib 14, and a boss is convexly provided on the front end surface of the cylinder 3, and the boss is embedded in the avoidance hole, and the front end of the striker 4 also passes through the partition rib 14 from the avoidance hole. The connecting hole 15 is usually provided at the lower end of the partition rib 14, so that the gas discharged into the second accommodating cavity 12 can enter the first accommodating cavity 11 from the connecting hole 15.

[0061] Optionally, see Figures 1 to 4In this embodiment, a guide structure arranged around the communicating hole 15 is arranged on the front surface or the rear surface of the partition rib 14, and the guide structure encloses to form a gas channel 16 communicating with the communicating hole 15. The gas channel 16 formed by the guide structure can guide the gas discharged into the second accommodating chamber 12 into the first accommodating chamber 11. The following will take the example of the guide structure arranged on the front surface of the partition rib 14 as an example, then the gas channel 16 is located in the second accommodating chamber 12, the rear end of the gas channel 16 communicates with the second accommodating chamber 12, the front end of the gas channel 16 is connected to the communicating hole 15, and the gas channel 16 forms the connection between the first accommodating chamber 11 and the second accommodating chamber 12.

[0062] The housing 1 is provided with an air outlet 13 connected to the first accommodating chamber 11, so that after the gas dissipates the heat of the heat dissipation component 2 in the first accommodating chamber 11, it can be discharged from the air outlet 13 to the outside of the first accommodating chamber 11. Figures 1 to 4 In this embodiment, the heat dissipation component 2 is arranged along the direction from the connection point between the first accommodating cavity 11 and the second accommodating cavity 12 to the air outlet 13 .

[0063] Specifically, the gas discharged from the cylinder 3 into the second accommodating chamber 12 can enter the first accommodating chamber 11 from the connection between the first accommodating chamber 11 and the second accommodating chamber 12 (i.e., the gas passage 16), and then be discharged from the air outlet 13 to the outside of the first accommodating chamber 11. The components 2 to be cooled are arranged along the direction from the gas passage 16 to the air outlet 13, that is, the components 2 to be cooled are arranged along the flow direction of the gas in the first accommodating chamber 11, so that the gas entering the first accommodating chamber 11 can flow through various parts of the components 2 to be cooled in sequence, so as to improve the cooling efficiency of the components 2 to be cooled.

[0064] Optionally, see Figures 1 to 4 In this embodiment, the striker drive mechanism 2a includes a motor 21 and a gear box 22, and the motor shaft of the motor 21 is connected to the striker 4 through the gear box 22; one of the motor 21 and the gear box 22 is arranged near the connecting point between the first accommodating chamber 11 and the second accommodating chamber 12, and the other is arranged near the air outlet 13.

[0065] Specifically, the gas channel 16 is connected to the upper end of the first accommodating chamber 11, and the air outlet 13 is arranged at the lower end of the first accommodating chamber 11. The motor 21 is close to the gas channel 16 or the air outlet 13, and the following will take the motor 21 close to the air outlet 13 as an example for introduction. The motor 21 is located at the lower side of the gear box 22, the motor 21 is horizontally opposite to the air outlet 13, and the gear box 22 is horizontally opposite to the gas channel 16. When nailing, the exhaust in the forward direction of the piston 31 passes through the air outlet 32 ​​→ the second accommodating chamber 12 → the gas channel 16 → the gear box 22 → the motor 21 → the air outlet 13 in sequence, so that the gas discharged from the cylinder 3 each time nailing will dissipate the heat of the motor 21 and the gear box 22.

[0066] The gas channel 16 is close to the lower end of the second accommodating chamber 12. Figures 1 to 4 In this embodiment, the cavity wall at the upper end of the second accommodating cavity 12 is inclined from front to back in a direction away from the axis of the cylinder 3. By inclinedly arranging the cavity wall at the upper end of the second accommodating cavity 12, the volume of the second accommodating cavity 12 can be increased, which is beneficial for the gas in the cylinder 3 to be discharged from the outlet 32 ​​into the second accommodating cavity 12.

[0067] In order to prevent dust and other impurities from entering the first accommodating chamber 11 from the air outlet 13, the dust and other impurities enter the cylinder 3 from the air outlet 32 ​​after passing through the gas channel 16 and the second accommodating chamber 12 in sequence. Figures 1 to 4 In the present embodiment, the nail gun 100 further includes a blocking member 5, which can be movably disposed on the casing 1 and is integrally injection molded; when the blocking member 5 is located at the first position, the blocking member 5 blocks the connection between the first accommodating chamber 11 and the second accommodating chamber 12, and the first accommodating chamber 11 and the second accommodating chamber 12 are disconnected; when the blocking member 5 is located at the second position, the blocking member 5 opens the connection between the first accommodating chamber 11 and the second accommodating chamber 12, and the first accommodating chamber 11 and the second accommodating chamber 12 are connected.

[0068] Specifically, the blocking member 5 includes a blocking portion 53 for blocking the gas passage 16. The blocking portion 53 may be located in the first accommodating cavity 11, so that the blocking portion 53 blocks the gas passage 16 from the front side; the blocking portion 53 may also be located in the second accommodating cavity 12, so that the blocking portion 53 blocks the gas passage 16 from the rear side. The following description will be based on an example in which the blocking portion 53 is located in the second accommodating cavity 12 and the blocking portion 53 is used to block the gas passage 16 from the rear side.

[0069] When not nailing, the blocking member 5 is located in the first position, the blocking member 5 blocks the gas channel 16, the first accommodating chamber 11 is not connected to the second accommodating chamber 12, and the second accommodating chamber 12 is in a closed state, so that dust and other impurities at the air outlet 13 cannot enter the second accommodating chamber 12 from the first accommodating chamber 11, and cannot enter the cylinder 3 through the air outlet 32, thereby reducing the risk of failure of the cylinder 3.

[0070] When nailing, the blocking member 5 moves to the second position, the blocking member 5 moves to the rear side of the air outlet 13, the blocking member 5 releases the blocking of the gas channel 16, and the first accommodating chamber 11 is connected with the second accommodating chamber 12, so that the exhaust gas in the forward direction of the plug 31 passes through the air outlet 32, the second accommodating chamber 12, and the gas channel 16 in turn and enters the first accommodating chamber 11 to dissipate heat for the striker drive mechanism 2a in the first accommodating chamber 11. After nailing is completed, the button 7 is released, and under the action of the elastic element, the button 7 is reset, driving the blocking member 5 to block the gas channel 16 again.

[0071] The specific activity mode of the blocking member 5 can be set according to the actual situation. For example, the blocking member 5 can be set on the housing 1 in a flippable manner; the blocking member 5 can be set on the housing 1 in a sliding manner along the axial direction or radial direction of the cylinder 3. Figures 1 to 4 In this embodiment, the blocking member 5 is located on one side of the connection between the first accommodating chamber 11 and the second accommodating chamber 12 in the axial direction of the cylinder 3, and the blocking member 5 is slidably arranged on the casing 1 along the axial direction of the cylinder 3.

[0072] Specifically, the blocking member 5 is located at the rear side of the gas passage 16, and the blocking member 5 is slidably arranged on the housing 1. When the blocking member 5 is located at the second position, the blocking member 5 and the gas passage 16 are spaced apart from each other. When the blocking member 5 is located at the second position and slides forward to the first position, the blocking portion 53 of the blocking member 5 can block the gas passage 16 from the rear side, and the movement of the blocking member 5 is relatively simple.

[0073] The blocking piece 5 can be movably arranged on the casing 1, and a blocking driving mechanism can be separately arranged corresponding to the blocking piece 5 to drive the blocking piece 5 to move through the blocking driving mechanism; the blocking piece 5 can also be driven by existing movable parts on the nail gun 100, for example, the blocking piece 5 can be driven by movable parts such as the button 7 or the firing pin 4.

[0074] Optionally, see Figures 1 to 5 In this embodiment, a switch 6 is provided in the casing 1, and the nail gun 100 further includes a button 7 that can be movably provided on the casing 1, and the button 7 is provided corresponding to the switch 6, so that the switch 6 can be triggered by pressing the button 7; the blocking member 5 can be slidably provided on the casing 1 along the pressing direction of the button 7, and one end of the blocking member 5 away from the connection between the first accommodating cavity 11 and the second accommodating cavity 12 is connected to the button 7, so that the blocking member 5 can be driven to slide by the button 7; when the button 7 is in the released position, the button 7 is separated from the switch 6, and the blocking member 5 is in the first position; when the button 7 is in the pressed position, the button 7 presses and triggers the switch 6, and the blocking member 5 is in the second position.

[0075] Specifically, the user can trigger the switch 6 by pressing the button 7, and an elastic element such as a spring is provided between the button 7 and the housing 1, so that when the user releases the button 7, the button 7 can automatically reset to the release position under the action of the elastic element, wherein the pressing direction of the button 7 is usually parallel or approximately parallel to the axial direction of the cylinder 3.

[0076] The blocking member 5 is connected to the button 7 so that the blocking member 5 can move synchronously with the button 7. When nailing is not done, the button 7 is in the release position under the action of the preload force of the elastic element. At this time, the blocking member 5 blocks the gas channel 16, the first accommodating chamber 11 is not connected to the second accommodating chamber 12, and the second accommodating chamber 12 is in a closed state. In this way, dust and other impurities at the air outlet 13 cannot enter the second accommodating chamber 12 from the first accommodating chamber 11, and cannot enter the cylinder 3 through the air outlet 32, thereby reducing the risk of failure of the cylinder 3. When nailing, the switch button 7 is pressed, and the button 7 drives the blocking member 5 to move backward synchronously. The blocking member 5 moves to the rear side of the air outlet 13, and the blocking member 5 releases the blocking of the gas channel 16. The first accommodating chamber 11 is connected to the second accommodating chamber 12. In this way, the exhaust gas in the forward direction of the plug 31 passes through the air outlet 32, the second accommodating chamber 12, and the gas channel 16 in turn and enters the first accommodating chamber 11 to dissipate heat for the striker drive mechanism 2a in the first accommodating chamber 11.

[0077] The specific shape of the blocking member 5 can be set according to the actual situation. For example, the blocking member 5 can be set in a block, sheet or rod shape. Figures 1 to 5 In this embodiment, the blocking member 5 and the button 7 are located on the same side of the cylinder 3 in the radial direction, and the blocking member 5 is located between the button 7 and the cylinder 3; the blocking member 5 includes a main body 51, a connecting portion 52 and a blocking portion 53, and the main body 51 is extended along the pressing direction; the connecting portion 52 is formed by bending and extending from one end of the main body 51 close to the button 7 toward the button 7, and the connecting portion 52 is connected to the button 7; the blocking portion 53 is formed by bending and extending from one end of the main body 51 away from the button 7 toward the cylinder 3, and the blocking portion 53 is located in the second accommodating chamber 12, and the blocking portion 53 is used to block the connection between the first accommodating chamber 11 and the second accommodating chamber 12.

[0078] Specifically, the blocking member 5 and the button 7 are located at the lower side of the front end of the cylinder 3, and the main body 51 is extended in the front-to-back direction. The main body 51 is located between the blocking member 5 and the button 7, and the front end of the main body 51 extends into the second accommodating cavity 12, and the front end of the main body 51 is in contact with the outer peripheral side of the cylinder 3. The front end of the main body 51 is bent upward and extended to form a blocking portion 53, and the upper end surface of the blocking portion 53 is in contact with the outer peripheral side of the cylinder 3. The rear end of the main body 51 is located outside the second accommodating cavity 12, and the rear end of the main body 51 is bent downward and extended to form a connecting portion 52, and the connecting portion 52 is fixedly connected to the button 7. The blocking member 5 is arranged in this way, not only the structure of the blocking member 5 is relatively simple, but also the cylinder 3 is not easy to interfere with the movement of the blocking member 5.

[0079] The specific fixing method of the connection part 52 and the button 7 may not be particularly limited. For example, the connection part 52 and the button 7 may be fixed by bonding, clamping or screwing. Figure 1 and Figure 5 In this embodiment, a slot 71 is provided on the button 7, and one end of the connecting portion 52 away from the main body 51 is inserted into the slot 71. In this way, the blocking member 5 is inserted and fixed in the slot 71 of the button 7, which facilitates the disassembly and assembly of the blocking member 5.

[0080] Optionally, see Figures 2 to 5 In this embodiment, a cut surface is provided at the lower end of the annular limiting protrusion 33 , and the upper surface of the main body 51 is in contact with the cut surface of the annular limiting protrusion 33 .

[0081] Optionally, see Figures 1 to 5 In this embodiment, the blocking portion 53 is located at the front side of the annular limiting protrusion 33 , and the shape of the upper end surface of the blocking portion 53 is adapted to the shape of the outer peripheral side surface of the front end of the cylinder 3 .

[0082] Specifically, the annular limiting protrusion 33 is located at the rear side of the blocking portion 53, so that the blocking member 5 can be limited in its backward movement by the cooperation between the annular limiting protrusion 33 and the blocking portion 53. The upper end surface of the blocking portion 53 is a curved surface that matches the shape of the cylinder 3, so that the upper end surface of the blocking portion 53 can better fit the outer peripheral side surface of the cylinder 3.

[0083] When nailing, press the button 7, and the blocking member 5 moves backwards with the button 7. At this time, the gas channel 16 is opened, and the gas discharged from the cylinder 3 passes through the air outlet 32 ​​→ the second accommodating chamber 12 → the gas channel 16 → the gear box 22 → the motor 21 → the air outlet 13 in sequence. In this way, the gas discharged from the cylinder 3 will dissipate heat to the motor 21 and the gear box 22 each time nailing is performed. After nailing, release the button 7. Under the action of the elastic element, the button 7 is reset, driving the blocking member 5 to block the gas channel 16 again. At this time, the second accommodating chamber 12 is in a closed state, and dust and other impurities at the air outlet 13 cannot enter the second accommodating chamber 12 from the first accommodating chamber 11, and cannot enter the cylinder 3 through the air outlet 32, thereby reducing the risk of failure of the cylinder 3. In this way, the heat dissipation effect and dust prevention effect of the nail gun 100 are better.

[0084] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A nail gun, characterized in that: include: A casing, wherein a first accommodating cavity and a second accommodating cavity that are connected to each other are formed in the casing; A driving assembly, wherein the driving assembly is disposed in the first accommodating cavity; A cylinder, wherein pressurized gas is arranged in the cylinder, a piston is arranged in the cylinder, an air outlet is opened at one end of the cylinder close to the driving assembly, and the cylinder is arranged in the second accommodating chamber; A striker, wherein the striker is movably arranged in the cylinder, one end of the striker extends into one end of the cylinder where the air outlet is opened and is connected to the piston, and when the piston and the striker move toward the air outlet under the action of the pressurized gas, the gas in the cylinder is discharged from the air outlet into the second accommodating chamber, and enters the first accommodating chamber to dissipate heat for the drive component.

2. The nail gun according to claim 1, characterized in that: The driving assembly includes a striker driving mechanism, which is dynamically coupled to the striker to drive the striker to move.

3. The nail gun according to claim 2, characterized in that: The casing is provided with an air outlet connected to the first accommodating chamber; the striker driving mechanism includes a motor and a gear box, and the rotation of the motor drives the gear box to rotate and thus drives the striker to move; one of the motor and the gear box is arranged near the connection between the first accommodating chamber and the second accommodating chamber, and the other is arranged near the air outlet.

4. The nail gun according to claim 1, characterized in that: The first accommodating chamber is located at a side of the second accommodating chamber close to the air outlet in the axial direction of the cylinder.

5. The nail gun according to claim 4, characterized in that: A partition rib is protruded on the inner shell wall of the casing, the partition rib abuts against the side of the cylinder axially close to the air outlet, the partition rib separates the first accommodating chamber from the second accommodating chamber, and a connecting hole connecting the first accommodating chamber and the second accommodating chamber is opened on the partition rib.

6. The nail gun according to any one of claims 1 to 5, characterized in that: The nail gun also includes a blocking piece, which is movably disposed on the casing; when the blocking piece is located at a first position, the blocking piece covers the connecting hole to separate the first accommodating cavity from the second accommodating cavity; when the blocking piece is located at a second position, the blocking piece moves away from the connecting hole to connect the first accommodating cavity with the second accommodating cavity.

7. The nail gun according to claim 6, characterized in that: The blocking member is located on one side of the connection between the first accommodating cavity and the second accommodating cavity in the axial direction of the cylinder, and the blocking member is slidably arranged on the housing along the axial direction of the cylinder.

8. The nail gun according to claim 6, characterized in that: A switch is disposed in the housing, and the nail gun further comprises a button movably disposed on the housing, the button being disposed corresponding to the switch so that the switch can be triggered by pressing the button; The blocking member is slidably disposed on the housing along the pressing direction of the button, and one end of the blocking member away from the connection between the first accommodating cavity and the second accommodating cavity is connected to the button so that the blocking member is driven to slide by the button; When the button is in the release position, the button is separated from the switch, and the blocking member is located at the first position; When the button is in the pressed position, the button is pressed to trigger the switch, and the blocking member is located in the second position.

9. The nail gun according to claim 8, characterized in that: The blocking member and the button are located on the same side of the cylinder in the axial direction, and the blocking member is located between the button and the cylinder; the blocking member includes: A main body, the main body extending along the pressing direction; A connecting portion, the connecting portion is formed by bending and extending from one end of the main body close to the button toward the button, and the connecting portion is connected to the button; The blocking portion is formed by bending and extending from one end of the main body away from the button toward the cylinder, and the blocking portion is located in the second accommodating cavity, and is used to block the connection between the first accommodating cavity and the second accommodating cavity.

10. The nail gun according to claim 9, characterized in that: The main body, the connecting portion and the blocking portion are integrally injection-molded.

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