A gas-spring hybrid power supply mechanism and nail gun

Abstract

The application belongs to the technical field of fastening devices, and relates to a gas-spring hybrid power supply mechanism and a nail gun. According to the nail gun of the application, the nail gun comprises a gas-spring hybrid power supply mechanism and a driving mechanism. The gas-spring hybrid power supply mechanism comprises a cylinder body, a piston, a nail shooting rod and a spring unit. The cylinder body has a front side and a rear side. The piston is movably arranged in the cylinder body, and divides the cylinder body into a front side communication cavity communicating with the outside and a rear side gas storage cavity. The spring unit is movably arranged in the rear side gas storage cavity between the piston and the rear side. The spring unit has at least one energy storage spring. When the piston is pushed backward by external force, the gas in the rear side gas storage cavity and the spring unit are compressed at the same time and generate power together. Compared with a single type spring nail gun or a single type gas spring nail gun under the same conditions, the power can be increased by at least several times, and the process difficulty of the cylinder is not increased.

Description

Technical Field

[0001] This invention belongs to the field of fastening device technology, and relates to a gas-ballistic hybrid power supply mechanism and a nail gun. Background Technology

[0002] Currently, lithium-ion battery nail guns are becoming increasingly popular in the market due to their ease of operation and portability. Common types of lithium-ion battery nail guns include gas spring lithium-ion battery nail guns and spring lithium-ion battery nail guns.

[0003] For example, Chinese utility model patent No. 201921395877.X discloses a spring-loaded lithium-ion nail gun. Its principle is as follows: a drive motor moves the nail-driving component away from the nail-shooting direction via a drive wheel, thereby compressing the drive spring. Then, the drive wheel disengages from the nail-driving component, and the nail-driving component is ejected at high speed under the action of the drive spring, thus achieving nail shooting. This spring-loaded lithium-ion nail gun is small and portable, but it is mainly suitable for low-power nail shooting scenarios and cannot meet the needs of high-power nail shooting. Furthermore, after nail shooting, the drive spring continuously bounces back and forth within the cylinder, causing a continuous vibration phenomenon on the nail gun. The greater the elasticity of the drive spring, the greater the reaction force of the spring's bounce on the nail gun, and the more obvious and prolonged the vibration phenomenon. Users then need to exert greater grip strength to control the nail gun, easily leading to fatigue.

[0004] For example, Chinese utility model patent No. 202220421844.3 discloses a gas spring lithium-ion nail gun. Its principle is: a control motor moves the firing pin component away from the nail-shooting direction via a transmission mechanism, thereby compressing the gas inside the cylinder, and then releasing the firing pin component to achieve nail firing. Compared to spring-loaded lithium-ion nail guns, its power can be much greater, and there is no continuous vibration. However, since the air compression ratio inside the cylinder is constant, to achieve higher power, a larger cylinder cavity needs to be designed to store more gas. This results in a relatively large size and heavy weight for the gas spring lithium-ion nail gun. Furthermore, because the gas inside the cylinder needs to be repeatedly compressed, airtightness is crucial. The higher the power of the nail gun, the more exponentially the manufacturing difficulty increases, leading to a higher scrap rate.

[0005] Therefore, there is an urgent need to design a nail gun that is compact, powerful, low-cost, and labor-saving. Summary of the Invention

[0006] To solve the above problems, a gas-ball hybrid power supply mechanism and a nail gun are provided.

[0007] The present invention adopts the following technical solution:

[0008] This invention provides a gas-ballistic hybrid power supply mechanism, installed inside a nail gun, for providing power for nail firing. It comprises: a cylinder body disposed within the nail gun, having a front side and a rear side; a piston movably disposed within the cylinder body, dividing the cylinder body into a front connecting chamber communicating with the outside and a sealed rear gas storage chamber; a nail firing rod fixedly connected to the piston, having a nail firing end extending from the front side for nail firing; and a spring unit movably installed within the rear gas storage chamber between the piston and the rear side, the spring unit having at least one energy storage spring. When the piston is pushed rearward by an external force, the gas in the rear gas storage chamber and the spring unit are simultaneously compressed and together generate the power.

[0009] The gas-bomb hybrid power supply mechanism provided by the present invention may also have the following technical features: it further includes an air replenishment unit, which is disposed on the rear side and is used to replenish the rear air storage chamber with air.

[0010] The gas-bomb hybrid power supply mechanism provided by this invention also has the following technical features: a gas replenishment channel is provided on the rear side, the gas replenishment channel having an inlet end communicating with the outside and an outlet end communicating with the rear gas storage chamber; the gas replenishment unit is a one-way gas valve, which has: a one-way sealing ring installed at the inlet end of the gas replenishment channel; a one-way valve core for sealing the inlet end of the gas replenishment channel; a spring seat installed at the outlet end of the gas replenishment channel; and a one-way spring disposed between the one-way valve core and the spring seat, and abutting the one-way valve core against the one-way sealing ring, thereby sealing the inlet end.

[0011] The gas-bomb hybrid power supply mechanism provided by the present invention may also have the following technical feature: when the piston is released, the gas pressure in the rear gas storage chamber can be preset to 0-0.8MPa.

[0012] The pneumatic-elastic hybrid power supply mechanism provided by the present invention may also have the following technical features: wherein the spring unit includes at least one inner spring and an outer spring that sleeves the at least one inner spring inside, and the outer spring has a helical direction opposite to that of the inner spring adjacent to the outer spring.

[0013] The pneumatic-elastic hybrid power supply mechanism provided by the present invention may also have the following technical features: wherein the spring unit includes two or more inner springs of different diameters, the inner springs and the outer springs are coaxially arranged, and the helical directions of two adjacent inner springs are opposite.

[0014] The gas-elastic hybrid power supply mechanism provided by the present invention may also have the following technical features: wherein, at least one spring mounting groove for mounting the energy storage spring is provided on the rear side of the piston, and at least one spring mounting protrusion for mounting the energy storage spring extends from the front side of the rear side.

[0015] The pneumatic-elastic hybrid power supply mechanism provided by the present invention may also have the following technical feature: a buffer pad is installed on the front side of the cylinder to buffer the force exerted by the piston on the cylinder.

[0016] The pneumatic-elastic hybrid power supply mechanism provided by the present invention may also have the following technical features: a guide ring and a piston sealing ring are sequentially embedded on the side wall of the piston, and a rod mounting part for mounting the nail gun rod is provided on the front side of the piston. After the nail gun rod is inserted into the rod mounting part along its moving direction, the two are fixedly connected by a radial pin.

[0017] The present invention also provides a nail gun, comprising: a gas-ballistic hybrid power supply mechanism for providing power for nailing; and a drive mechanism for driving the gas-ballistic hybrid power supply mechanism to generate the power, wherein the gas-ballistic hybrid power supply mechanism is the aforementioned gas-ballistic hybrid power supply mechanism.

[0018] Invention Function and Effect

[0019] The nail gun according to the present invention includes a gas-spring hybrid power supply mechanism and a drive mechanism. The gas-spring hybrid power supply mechanism includes a cylinder, a piston, a nail rod, and a spring unit. The cylinder has a front portion and a rear portion. The piston is movably disposed within the cylinder, dividing the cylinder into a front communicating cavity connected to the outside and a sealed rear gas storage cavity. The spring unit is movably installed within the rear gas storage cavity between the piston and the rear portion. The spring unit has at least one energy storage spring. When the piston is pushed backward by an external force, the gas in the rear gas storage cavity and the spring unit are simultaneously compressed and together generate the power. This embodiment, by compressing the piston, can simultaneously generate the power of compressed gas and the power of compressed spring. Compared to a single-type spring nail gun or a single-type gas spring nail gun under the same conditions, it can increase the power by at least several times, without increasing the manufacturing difficulty of the cylinder.

[0020] Furthermore, since the rear air chamber is sealed, after nailing, the spring unit will continuously bounce within the cylinder. This continuous bouncing and impact on the cylinder or piston will generate continuous vibration, resulting in a tremor phenomenon. Because the bouncing compresses the internal sealed gas medium, it creates bouncing resistance, thus more quickly reducing the tremor caused by the spring unit and improving the comfort of nailing. Compared to single-spring nail guns under the same conditions, this effectively saves the user's effort.

[0021] The invention also includes an air replenishment unit, preferably a one-way gas valve, which is located on the rear side and used to replenish the rear air storage chamber. When the piston moves backward, compressing air, the one-way gas valve is closed. When the nail gun fires the nail, the resulting vibration is sufficient to cause the one-way valve core to jump, which can instantly open the one-way gas valve to replenish air, making the internal air pressure consistent with atmospheric pressure, achieving automatic air replenishment, and reducing the impact of air leakage on the power supply mechanism.

[0022] In addition, if it is necessary to increase the power of the nail gun, the user can pressurize the rear air chamber directly through the gas check valve and external pressurization device when the piston is in the release position. Generally, the gas pressure can be preset to 0-0.8MPa, so that the piston generates more power when it is compressed.

[0023] In addition, the greater the pre-pressure in the rear air storage chamber, the greater the resistance generated when the spring unit continuously bounces after the nail is fired, which can further reduce the vibration effect of the nail gun. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the nail gun of the present invention.

[0025] Figure 2 This is a cross-sectional view of the gas-bomb hybrid power supply mechanism of the present invention.

[0026] Figure 3 This is a schematic diagram of the structure of the gas-bomb hybrid power supply mechanism of the present invention after the cylinder is hidden.

[0027] Figure 4 yes Figure 2 A partial enlarged view of the gas check valve of the present invention.

[0028] Figure 5 This is a cross-sectional view of the notched gear and the nail gun rod mating point of the drive mechanism of the present invention.

[0029] Figure 6 This is a schematic diagram of the structure of the first modified example of the spring unit of the present invention.

[0030] Figure 7 This is a schematic diagram of the structure of a second modified example of the spring unit of the present invention.

[0031] The meaning of the labels in the diagram:

[0032] 1-Gas-bullet hybrid power supply mechanism; 2-Drive mechanism; 3-Nose; 4-Nail feeding mechanism;

[0033] 11-Cylinder block; 111-Front side; 112-Rear side; 113-Rear air reservoir; 114-Air supply channel; 115-Spring mounting protrusion; 116-Rear seal ring;

[0034] 12-Piston; 121-Spring mounting groove; 122-Guide ring; 123-Piston seal; 124-Rod mounting part; 125-Radial pin;

[0035] 13-Nailing rod; 131-Drive tooth;

[0036] 14 - Spring unit; 141 - Inner spring; 142 - Outer spring;

[0037] 15-Gas check valve; 151-One-way seal ring; 152-One-way valve core; 153-Spring seat; 154-One-way spring;

[0038] 16- Cushioning pad;

[0039] 20-Drive platform; 21-Notched gear; 211-Gear; 212-Notched part; 22-Reducer; 23-Drive motor. Detailed Implementation

[0040] The specific embodiments of the present invention will be described below with reference to the accompanying drawings and examples.

[0041] <Example>

[0042] Figure 1 This is a schematic diagram of the structure of the nail gun of the present invention.

[0043] like Figure 1 As shown, the nail gun includes a gas-ball hybrid power supply mechanism 1, a drive mechanism 2, a nozzle 3, a nail feeding mechanism 4, a lithium battery module, and a housing.

[0044] The nozzle 3 has a firing channel and an outlet for firing nails; the nail feeding mechanism 4 has a nail passage in which nails are installed, and the firing channel is connected to the nail passage; the rear end of the nozzle 3 is provided with a gas-ballistic hybrid power supply mechanism 1 for driving the nail, and one side of the gas-ballistic hybrid power supply mechanism 1 is connected to a drive mechanism 2 for driving its energy storage, the drive mechanism 2 is also used to control the gas-ballistic hybrid power supply mechanism 1 and realize nail firing. The gas-ballistic hybrid power supply mechanism 1 and the drive mechanism 2 are covered by a shell, and a handle extends from the rear of the shell. A lithium battery module for replenishing energy to the drive mechanism 2 is installed at the lower end of the handle, and a nail firing switch for controlling the drive mechanism 2 is provided at the upper end of the handle.

[0045] Figure 2 This is a cross-sectional view of the gas-bomb hybrid power supply mechanism of the present invention.

[0046] like Figure 2 As shown, the air-bomb hybrid power supply mechanism 1 includes a cylinder 11, a piston 12, a nail gun rod 13, a spring unit 14, an air replenishment unit, and a buffer pad 16.

[0047] The cylinder body 11 is made of metal and has a front side 111, a rear side 112, and a cylinder body connecting the two. The front side 111 and the rear side 112 can be integrally formed on the front and rear ends of the cylinder body, or they can be separately set on the front and rear ends of the cylinder body. In this embodiment, the front side 111 is a front end cap, integrally formed on the front end of the cylinder body by welding; the rear side 112 is a rear end cap, installed on the rear end of the cylinder body by a rear sealing ring 116, and the two are fixed together by four fastening screws. A nozzle 5 is installed on the front side 111.

[0048] Piston 12 is movably disposed within the cylinder body, dividing the cylinder body 11 into a front communicating chamber that connects to the outside and a sealed rear gas storage chamber 113, which contains air or other gaseous media. A guide ring 122 for reducing sliding resistance and a piston sealing ring 123 for increasing the sealing effect are sequentially embedded on the side wall of piston 12, with the outer surfaces of the guide ring 122 and piston sealing ring 123 fitting against the inner wall of the cylinder body 11.

[0049] The piston 12 has a rod mounting portion 124 on its front side for mounting the nail gun rod 13. The nail gun rod 13 has a nail-firing end extending from the front portion 111 for nail firing and a mounting end mounted on the piston 12. The rod mounting portion 124 is a protruding column shape and has a slot adapted to the shape of the mounting end. After the mounting portion of the nail gun rod 13 is inserted into the slot of the rod mounting portion 124 along its moving direction, the two are fixedly connected by a radial pin 125. The radial pin 125 of the present invention is detachable, and when the nail gun rod 13 needs to be replaced, it can be quickly replaced by removing the radial pin 125.

[0050] A buffer pad 16 is also installed on the front side 111 of the cylinder 11 to buffer the force exerted by the piston 12 on the cylinder 11 after nailing. Both the front side 111 and the buffer pad 16 have openings connecting to the outside. This is to facilitate the connection between the nail gun rod 13 and the piston 12, and also to allow the front connecting cavity to the outside. When nailing, the piston 12 moves rapidly, allowing air in the front connecting cavity to be quickly expelled, thus preventing increased nailing resistance to the piston 12 and the nail gun rod 13.

[0051] The spring unit 14 is freely and movably installed in the rear gas storage chamber 113 between the piston 12 and the rear side portion 112. The spring unit 14 has at least one energy storage spring. When the piston 12 is pushed backward by an external force, the gas in the rear gas storage chamber 113 and the spring unit are compressed simultaneously and generate the power together.

[0052] This embodiment, through the compression piston 12, can simultaneously generate the power of compressed gas and the power of compressed spring. Compared to single-type spring nail guns or single-type gas spring nail guns under the same conditions, it can increase the power by at least several times, without increasing the manufacturing difficulty of the cylinder. Furthermore, since the rear air storage chamber 113 is closed, after nailing, the spring unit 14 will continuously bounce within the cylinder 11. This continuous bouncing impacts the cylinder 11 or piston 12, generating continuous vibration, i.e., causing a vibration phenomenon. Because the bouncing compresses the internal sealed gas medium, generating bouncing resistance, the vibration phenomenon caused by the spring unit 14 can be reduced more quickly, improving the comfort of nailing. Compared to single-type spring nail guns under the same conditions, it can effectively save the user's effort.

[0053] To better utilize the power of both, the critical compression position of the spring unit 14 can be made consistent with the critical compression position of the gas in the gas storage chamber 113 after the piston 12 is compressed. In this way, each movement of the piston 12 can obtain the maximum power and achieve the highest cost performance.

[0054] Figure 3 This is a schematic diagram of the structure of the gas-bomb hybrid power supply mechanism of the present invention after the cylinder is hidden.

[0055] like Figure 2 , 3 As shown, the spring unit 14 includes at least one inner spring 141 and an outer spring 142 that houses the at least one inner spring. Both the inner spring 141 and the outer spring 142 are types of energy storage springs.

[0056] In this embodiment, the spring unit 14 includes an inner spring 141 and an outer spring 142 arranged coaxially, and the outer spring 142 has the opposite helical direction to the inner spring 141 adjacent to the outer spring 142.

[0057] To facilitate the installation of the energy storage springs and prevent interference between them, at least one spring mounting groove 121 for mounting the energy storage spring is provided on the rear side of the piston 12, and at least one spring mounting protrusion 115 for mounting the energy storage spring extends from the front side of the rear side portion 112. In this embodiment, two spring mounting protrusions 115 are provided, both of which are annular, have different sizes, and are coaxially arranged. The outer wall diameters of the two protrusions are slightly smaller than the inner diameters of the corresponding inner spring 141 and outer spring 142, respectively. One spring mounting groove 121 is provided. The outer ring size of the spring mounting groove 121 is slightly larger than the outer diameter of the outer spring 142 to match, and its inner ring size is slightly smaller than the inner diameter of the inner spring 141. This facilitates both the positioning and guidance of the energy storage spring and its separation.

[0058] The spring unit in this embodiment also has the following advantages:

[0059] 1. Without increasing the size of the cylinder 11, increase the overall elastic coefficient of the spring unit to obtain the largest possible elastic force, so as to generate greater nail-shooting power.

[0060] 2. The ratio of the maximum load force of the outer spring 142 to the maximum load force of the inner spring 141 is 5:2.

[0061] 3. To ensure the concentricity of the combined springs, the inner spring 141 and the outer spring 142 have opposite helical directions. This prevents the inner and outer springs from becoming misaligned or interfering with each other during compression or extension.

[0062] 4. Due to the different directions of spring rotation and loads, the resulting jumping frequencies are not the same, and the forces exerted on the nail gun can partially cancel each other out, thereby greatly reducing the vibration phenomenon after work and improving the comfort after nailing.

[0063] Figure 4 yes Figure 2 A partial enlarged view of the gas check valve of the present invention.

[0064] The rear side is provided with an air supply channel 114, which has an air inlet end that connects to the outside and an air outlet end that connects to the rear air storage chamber 113.

[0065] like Figure 4 As shown, the gas replenishment unit is disposed on the rear side 112 and is used to replenish gas to the rear gas storage chamber 113. The gas replenishment unit prioritizes a one-way gas valve 15, which has a one-way sealing ring 151, a one-way valve core 152, a spring seat 153, and a one-way spring 154.

[0066] The one-way sealing ring 151 shown is installed at the air inlet end of the air supply channel 114; the one-way valve core 152 is used to seal the air inlet end of the air supply channel 114; the spring seat 153 is installed at the air outlet end of the air supply channel 114; the one-way spring 154 is disposed between the one-way valve core 152 and the spring seat 153, and abuts the one-way valve core 152 against the one-way sealing ring 151, thereby sealing the air inlet end.

[0067] In this embodiment, the rear air storage chamber 113 does not need to be filled with air during production. It is only necessary to put the piston 12 in the release position when sealing the rear part 112 at the end, and then install the rear part 112. This ensures that the rear air storage chamber 113 stores air at the same pressure as atmospheric pressure.

[0068] The release position is when the piston 12 is at the front end of the cylinder 11, that is, close to the buffer pad 16, which is also the position where the rear air storage chamber 113 has the largest volume.

[0069] Due to sealing issues, there will be a certain degree of gas leakage in the rear air storage chamber 113. After the gas leaks, when the piston 12 is in the release position after firing the nail, a negative pressure will be generated in the rear air storage chamber 113, affecting the power of the nail rod 13 and also affecting the power of the next compressed air. In addition, the more gas leaks, the greater the negative pressure effect, and the greater the impact on the nail firing power.

[0070] Therefore, this embodiment is equipped with a gas check valve 15. When the piston 12 moves backward and compresses air, the gas check valve 15 is closed. When the nail gun 13 fires the nail, the vibration it generates is sufficient to cause the check valve core 152 to jump, which can instantly open the gas check valve 15 to replenish air, making the internal air pressure consistent with atmospheric pressure, realizing automatic air replenishment, and reducing the impact of air leakage on the power supply mechanism.

[0071] In addition, if it is necessary to increase the power of the nail gun, the user can pressurize the rear air storage chamber 113 directly through the gas one-way valve 15 and the external pressurization device when the piston 12 is in the release position. Generally, the gas pressure can be preset to 0-0.8MPa, so that the piston 12 generates greater power when it is compressed.

[0072] In addition, the greater the pre-pressure in the rear air storage chamber 113, the greater the resistance generated to the spring unit 14 when it continuously bounces after the nail is fired, which can further reduce the vibration effect of the nail gun.

[0073] Figure 5 This is a cross-sectional view of the notched gear and the nail gun rod mating point of the drive mechanism of the present invention.

[0074] like Figure 1 , 5 As shown, a drive platform 20 is integrally formed on one side of the front part 111. A drive mechanism 2 is provided on the drive platform 20. The drive mechanism 2 includes a drive tooth 131 provided on one side of the nail gun rod 13, a notched gear 21 installed on the drive platform 20, a reducer 22, and a drive motor 23.

[0075] The output end of the drive motor 23 is connected to the input end of the reducer 22. The output end of the reducer 22 is equipped with a notched gear 21. The notched gear 21 has a toothed portion 211 that meshes with the drive tooth 131 and a notched portion 212 that does not mesh with the drive tooth 131.

[0076] For ease of installation, the drive platform 20 is perpendicular to the working surface of the front side 111. The drive motor 23 is mounted on the lower end face of the drive platform 20 via a reducer 22, and the notched gear 21 is mounted on the upper end face of the drive platform 20. A cam and a limit switch are also provided above the notched gear 21, and the cam rotates synchronously with the notched gear 21. When the cam's convex part touches the limit switch, the limit switch controls the drive motor 23 to stop rotating.

[0077] The lithium battery module supplies power to the drive motor 23, and the nail gun switch is used to control the operation of the drive motor 23.

[0078] The drive teeth 131 are located on the side of the nail rod 13 near the notched gear 21 and mesh with the teeth 211 of the notched gear 21. The length of all drive teeth 131 is adapted to the compression length of the spring unit, and the number of teeth in the teeth 211 is adapted to the number of teeth in all drive teeth 131. In this embodiment, the teeth 211 occupy approximately 3 / 4 of the circumference of the notched tooth, and the notch 212 occupies approximately 1 / 4 of the circumference of the notched tooth. At this time, when the notched gear 21 rotates 270°, the movement of the nail rod 13 must satisfy the compression of the spring unit to the nail-shooting position.

[0079] When the tooth 211 engages with the drive tooth 131, the rotation of the notched gear 21 can drive the nail gun 13 to move; when the notched part 212 faces the nail gun 13, that is, when the tooth 211 does not engage with the drive tooth 131, the nail gun 13 is in a state without the constraint of the notched gear 21, and nailing can be realized.

[0080] <Variation Example 1>

[0081] Figure 6 This is a schematic diagram of the structure of the first modified example of the spring unit of the present invention.

[0082] The first type of assembly: The spring unit 14 includes two or more inner springs 141 with different diameters. The inner springs 141 and the outer springs 142 are coaxially arranged, and the helical directions of two adjacent inner springs 141 are opposite.

[0083] like Figure 6 As shown, the spring unit 14 contains two inner springs 141 of different diameters and an outer spring 142. The three springs are sequentially fitted between the piston 12 and the rear side 112 according to their diameters. The inner spring 141 with the smallest diameter has the same helical direction as the outer spring 142, while the helical direction of the middle inner spring 141 is opposite to that of the other two.

[0084] The spring unit 14 in this modified example has the following advantages:

[0085] 1. Without increasing the size of the cylinder 11, the overall elastic coefficient of the spring unit can be further increased, providing greater nail-shooting power.

[0086] 2. By setting different spiral directions, the concentric relationship of the combined springs can be ensured, preventing the inner and outer springs from becoming misaligned or interfering with each other.

[0087] 3. Due to the differences in the direction of rotation, mass, and stiffness of the springs, the vibration frequencies of the springs after compression and release are inconsistent. This prevents the springs from resonating, and the reaction forces of the springs will partially cancel each other out, greatly reducing the vibration after the work is done, improving the vibration reduction and nailing effect, and making nailing more effortless and comfortable.

[0088] 4. When a certain spring force is obtained, this spring unit has the advantages of small size and easy installation.

[0089] <Variation Example 2>

[0090] Figure 7 This is a schematic diagram of the structure of a second modified example of the spring unit of the present invention.

[0091] The second type of assembly: the spring unit 14 contains a plurality of inner springs 141 of the same diameter, which are symmetrically arranged inside the outer spring 142.

[0092] like Figure 7 As shown, the spring unit 14 contains three inner springs 141 of the same diameter and one outer spring 142. The inner springs 141 are arranged in parallel and are evenly distributed circumferentially with the center extension line of the nail gun 13 as the axis.

[0093] Among them, the helical direction of the two inner springs 141 is opposite to that of the outer spring 142, and the helical direction of the other inner spring 141 is the same as that of the outer spring 142.

[0094] This variation makes full use of the space inside the outer spring 142, thereby maximizing the overall elastic coefficient of the spring unit 14.

[0095] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A gas-ballistic hybrid power supply mechanism, installed inside a nail gun, for providing power for nail firing, characterized in that, include: The cylinder body, disposed inside the nail gun, has a front side and a rear side; A piston is movably disposed within the cylinder, dividing the cylinder into a front connecting chamber that communicates with the outside world and a sealed rear gas storage chamber. The nail gun rod, fixedly connected to the piston, has a nail gun end extending out of the front side for nailing; as well as A spring unit, movably mounted within a rear gas storage chamber between the piston and the rear side portion, has at least one energy storage spring. When the piston is pushed backward by an external force, the gas in the rear gas storage chamber and the spring unit are compressed simultaneously and generate the power together.

2. The gas-elastic hybrid power supply mechanism according to claim 1, characterized in that: in, It also includes an air replenishment unit, which is disposed on the rear side and is used to replenish the rear air storage chamber with air.

3. The gas-elastic hybrid power supply mechanism according to claim 2, Its features are: in, An air supply channel is provided on the rear side, the air supply channel having an air inlet end that connects to the outside and an air outlet end that connects to the rear air storage chamber; The gas replenishment unit is a gas check valve, which has the following features: A one-way sealing ring is installed at the air inlet end of the air supply channel; A one-way valve core is used to seal the air inlet end of the air supply channel; A spring seat is installed at the air outlet end of the air supply channel; as well as A one-way spring is disposed between the one-way valve core and the spring seat, and abuts the one-way valve core against the one-way sealing ring, thereby sealing the air inlet end.

4. The gas-elastic hybrid power supply mechanism according to claim 3, characterized in that: in, After the piston is released, the gas pressure in the rear gas storage chamber can be preset to 0-0.8 MPa.

5. A gas-elastic hybrid power supply mechanism according to any one of claims 1-4, characterized in that: in, The spring unit includes at least one inner spring and an outer spring that houses the at least one inner spring, wherein the outer spring has a helical direction opposite to that of the inner spring adjacent to the outer spring.

6. The gas-elastic hybrid power supply mechanism according to claim 5, characterized in that: in, The spring unit includes two or more inner springs of different diameters. The inner spring and the outer spring are coaxially arranged. The helical directions of two adjacent inner springs are opposite.

7. The gas-elastic hybrid power supply mechanism according to claim 1, characterized in that: in, At least one spring mounting groove for mounting the energy storage spring is provided on the rear side of the piston. The rear side extends to the front side with at least one spring mounting protrusion for mounting the energy storage spring.

8. The gas-elastic hybrid power supply mechanism according to claim 1, characterized in that: in, A buffer pad is also installed on the front side of the cylinder to buffer the force exerted by the piston on the cylinder.

9. The gas-elastic hybrid power supply mechanism according to claim 1, characterized in that: in, The piston's sidewall is sequentially fitted with a guide ring and a piston seal ring. The piston has a rod mounting part on its front side for mounting the nail gun rod. After the nail gun is inserted into the rod mounting part along its moving direction, the two are fixedly connected by a radial pin.

10. A nail gun, characterized in that, include: A pneumatic-bulb hybrid power supply mechanism is used to provide power for the nail gun; as well as A drive mechanism is used to drive the pneumatic-elastic hybrid power supply mechanism to generate the power. The gas-bomb hybrid power supply mechanism is the gas-bomb hybrid power supply mechanism as described in any one of claims 1-9.

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