CN214560585U - Nail gun and cylinder unit thereof - Google Patents
Nail gun and cylinder unit thereof Download PDFInfo
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- CN214560585U CN214560585U CN202120435545.0U CN202120435545U CN214560585U CN 214560585 U CN214560585 U CN 214560585U CN 202120435545 U CN202120435545 U CN 202120435545U CN 214560585 U CN214560585 U CN 214560585U
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Abstract
The utility model belongs to the technical field of fastening equipment, concretely relates to power actuated setting device and cylinder unit thereof. The nail gun comprises a shell and a cylinder unit, wherein the cylinder unit comprises a cylinder body arranged in the shell, a piston movably arranged in the cylinder body and a nail shooting rod arranged on the piston. Wherein, the cylinder body is made of plastics, and the tensile strength of the plastics is 50MPa-100 MPa. This embodiment becomes traditional metal cylinder body into the plastics cylinder body, very big reduction the weight of cylinder body to alleviateed the weight of whole rifle, be favorable to having reduced user's working strength, also be favorable to the lightweight development of power actuated setting device simultaneously.
Description
Technical Field
The utility model belongs to the technical field of fastening equipment, concretely relates to power actuated setting device and cylinder unit thereof.
Background
The utility model discloses a utility model with application number 201310024663.2 discloses a compressed air power actuated setting device, the cylinder body of its cylinder unit is made by the metal, and although the rigidity and the hardness of metal are comparatively good, its weight is bigger, because the user needs to hold the power actuated setting device for a long time when using, if power actuated setting device weight is overweight, then causes user's arm fatigue easily, influences the efficiency of power actuated setting operation. Meanwhile, the product does not meet the light weight development trend advocated by the current government.
SUMMERY OF THE UTILITY MODEL
To solve the above problems, a low-cost, high-strength, lightweight nail gun and a cylinder unit therefor are provided.
The utility model adopts the following technical scheme:
a cylinder unit for a nail gun, mounted within a housing of the nail gun, for providing power to impact a nail under the influence of high pressure gas, comprising:
a cylinder body disposed in the housing;
the piston is movably arranged in the cylinder body and divides the inner cavity of the cylinder body into an air inlet cavity and an air outlet cavity; and
a nail ejecting bar mounted on the piston for striking a nail;
wherein, the cylinder body is made of plastics, and the tensile strength of the plastics is 50MPa-100 MPa.
The cylinder unit for the nail gun provided by the utility model can also have the characteristics that the cylinder unit also comprises an annular buffer component,
wherein the cylinder body is provided with an air outlet side end part arranged at the air outlet cavity side, the air outlet side end part is provided with an annular surface which is jointed with the shell and is used as a first jointing surface,
the annular buffer component is arranged at the end part of the air outlet end around the nail ejecting rod and is provided with an annular surface which is jointed with the end part of the air outlet end as a second jointing surface,
the length of the second abutting surface in the axial direction of the cylinder body is at least half of the length of the first abutting surface in the axial direction.
The utility model provides a cylinder unit for nail gun can also have such characteristic, still includes:
the spacer bush is arranged on the cylinder body in a sealing way and is combined with the shell in a sealing way; and
the annular one-way airflow control part surrounds the cylinder body;
wherein, the spacer bush, the cylinder body and the shell form a return air chamber at the end part close to the air outlet side,
the cylinder body is also provided with a plurality of first pore channels and a plurality of second pore channels, wherein the first pore channels are arranged close to the end part of the air outlet side and the second pore channels are arranged close to the spacer bush;
the annular one-way airflow control part covers all the second pore passages and is used for preventing airflow in the air return chamber from flowing to the air inlet cavity.
The cylinder unit for nail gun of the utility model can also have the characteristic that the annular buffer component also has a first conical surface and a second conical surface which are respectively connected with the two sides of the first binding surface,
the first conical surface faces the air outlet cavity, the second conical surface faces away from the air outlet cavity,
the first duct is disposed at a position where the first tapered surface opposes the side wall of the cylinder body.
The present invention provides a cylinder unit for a nail gun, which may further have a feature in which the cylinder body has a plurality of first reinforcing ribs surrounding an outer wall of the cylinder body and a plurality of second reinforcing ribs parallel to an axis of the cylinder body,
the first reinforcing rib is annular or spiral,
the second reinforcing rib is connected with the first reinforcing rib.
The cylinder unit for the nail gun provided by the utility model can also have the characteristics that the cylinder unit also comprises a fixed ring,
wherein the cylinder body also has an air inlet side end part arranged at the air inlet cavity side,
the fixed ring is made of metal and is sleeved on the end part of the air inlet side.
The utility model provides a cylinder unit for nail gun can also have such characteristic, still includes:
and the end part sealing embedding ring is arranged between the air inlet side end part and the shaping ring, is embedded with the air inlet side end part and is used for being in sealing connection with an external component arranged on the air inlet side end part.
A nail gun, comprising:
a housing; and
a cylinder unit installed in the housing for providing power to strike the nail under the action of high-pressure gas,
wherein the cylinder unit is the cylinder unit for the nail gun.
The utility model provides a nail gun can also have such characteristic, still includes:
and a control valve unit provided as an outer member of the cylinder unit on an intake side end portion of the cylinder unit.
The utility model discloses an effect and effect:
the utility model discloses become traditional metal cylinder body into the plastics cylinder body, very big reduction the weight of cylinder body to alleviateed the weight of whole rifle, be favorable to having reduced user's working strength, also be favorable to the lightweight development of power actuated setting device simultaneously.
The utility model discloses a second binding face is half of first binding face at the ascending length of axial of cylinder body at least. When the piston impacts the annular buffering component, the impact force applied to the annular buffering component can be quickly transmitted to the metal shell through the cylinder body, so that the impact on the plastic cylinder body is relieved. At this time, the more the first attaching surface and the second attaching surface are overlapped in the radial projection length direction of the cylinder body, the higher the efficiency of impact force transmission is, the lower the damage degree of the plastic cylinder body is, and the longer the service life is.
The shaping ring made of metal materials is installed at the end part of the air inlet side of the cylinder body, when high-pressure air enters, the cylinder body is guaranteed to have enough strength to support, and the end part of the air inlet side of the cylinder body is prevented from deforming or even bursting.
In addition, still be provided with first strengthening rib and second strengthening rib on the outer wall of cylinder body, under the certain condition of thickness, further guarantee the intensity of cylinder body.
Drawings
FIG. 1 is a schematic view of the nail gun of the present invention;
fig. 2 is an exploded view of the power drive apparatus of the present invention;
fig. 3 is a cross-sectional view of the power drive apparatus of the present invention;
fig. 4 is a schematic structural view of the cylinder unit of the present invention;
fig. 5 is a sectional view of the cylinder unit of the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 3 at A; and
fig. 7 is a working schematic diagram of the power driving device of the present invention.
The reference numerals in the figures denote the meanings:
100-a nail feeding device; 200-gun nozzle; 300-a power drive;
301-a housing; 302-a cylinder unit; 303-control valve unit; 304-a control unit;
311-an air inlet chamber; 312-an outlet cavity; 313-a rear cover; 314 — an intake passage; 315-an air reservoir; 316-return chamber; 317-control room; 318-a handle;
321-a cylinder body; 3210-outlet side end; 3211-a first mating surface; 3212-a second bonding surface; 3213-a clip groove; 3214-a first channel; 3215-a second channel; 3216-inlet side end; 322-a piston; 3221-piston seal ring; 323-shooting the nail pole; 324-an annular cushioning member; 3241-mounting holes; 3242-first taper; 3243-second taper; 325-shaped ring; 326-end seal engagement ring; 3261-sealing the end faces; 3262-snap ring; 327-spacer sleeve; 3271-first spacer sealing ring; 3272-second spacer sealing ring; 328-an annular one-way airflow control; 329-a first stiffener; 330-a second reinforcing rib;
341-shooting nail switch; 342-gas valve.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the following embodiments and drawings are combined to specifically describe the present invention.
Fig. 1 is a schematic structural view of the nail gun of the present invention.
As shown in fig. 1, the nail gun includes a gun nozzle 200, a nail feeding device 100, and a power driving device 300.
The gun nozzle 200 is provided with a firing channel therein and has an ejection port for ejecting a nail; the nail feeding device is provided with a nail passing channel, the nail passing channel is internally provided with a strip nail, and the emission channel is connected with the nail passing channel. The rear end of muzzle 200 is provided with a power unit 300, and the power unit 300 is used to provide a firing power to the nails of the strip nail.
Fig. 2 is an exploded view of the power driving device of the present invention, and fig. 3 is a cross-sectional view of the power driving device of the present invention.
As shown in fig. 2 to 3, the power drive apparatus 300 includes a housing 301, a cylinder unit 302, a control valve unit 303, and a control unit 304.
The housing 301 is a metal housing, a handle 318 extends from the bottom of the metal housing, an air inlet channel 314 for communicating a high-pressure air source is arranged in the handle 318, and a rear cover 313 is mounted at the rear end of the housing 301, so that the mounting of the internal structures of the cylinder unit 302, the control valve unit 303 and the like is facilitated.
The cylinder unit 302 is installed inside the housing 301, and the cylinder unit 302 is provided inside with an air intake cavity 311 and an air outlet cavity 312, and the outside of the air intake cavity 311 and the housing 301 form an air storage chamber 315 communicated with an air intake channel 314 and an air return chamber 316 communicated with the air outlet cavity 312 through a spacer 327, the air intake cavity 311 can be communicated with the air storage chamber 315, and the air outlet cavity 312 is communicated with the atmosphere.
The control valve unit 303 is movably installed in a rear cover 313 at the rear end of the housing 301, and forms a control chamber 317 communicating the outside and the air reservoir 315 with the rear cover 313.
The control valve unit 303 is movably and sealably connected to the cylinder unit 302 and forms a separation surface therewith for the high-pressure gas to enter the inlet chamber 311. The control unit 304 is used for controlling the air storage chamber 315 and the control chamber 317, and the control chamber 317 to be sealed and conducted with the outside.
The control unit 304 comprises a nail shooting switch 341 and an air valve 342, the nail shooting switch 341 is used for controlling the air valve 342 to work, and the air valve 342 is used for controlling the control chamber 317 to be sealed and communicated with the outside.
The specific structure of the cylinder unit 302 is as follows:
fig. 4 is a schematic structural diagram of the cylinder unit of the present invention, and fig. 5 is a cross-sectional view of the cylinder unit of the present invention.
As shown in fig. 4 to 5, the cylinder unit 302 includes a cylinder 321, a piston 322, a nail-shooting rod 323, an annular buffer member 324, a setting ring 325, an end sealing fitting ring 326, a spacer 327, and an annular one-way air flow control member 328.
A cylinder 321 is mounted within the housing 301 of the nail gun, the cylinder 321 being made of a plastic having a tensile strength of 50MPa to 100MPa, preferably an engineering plastic.
The piston 322 is movably installed in the inner cavity of the cylinder 321, and divides the inner cavity of the cylinder 321 into an inlet cavity 311 and an outlet cavity 312. The outer ring of the piston 322 is provided with a piston sealing ring 3221 contacting the cylinder 321 for better sealing the air inlet cavity 311 and the air outlet cavity 312.
Because the cylinder 321 is made of plastic, the friction coefficient between the piston 322 and the cylinder 321 is relatively small, and because of the characteristics of the engineering plastic, a self-lubricating effect can be generated, which is beneficial to the movement of the piston 322.
The nail-ejecting shaft 323 is fixed to the center of the piston 322, and is used to strike a nail.
The middle part of the annular buffer member 324 is provided with a mounting hole 3241 for the nail shooting rod 323 to pass through, and the air outlet cavity 312 is communicated with the atmosphere through the mounting hole 3241 for exhausting air.
Compared with the original metal cylinder body, the plastic cylinder body of the embodiment greatly reduces the weight and the production cost of the cylinder body, and lays a solid foundation for the lightweight development of products.
In order to meet the requirement of a high-power nail gun, under the condition that the strength of the material is constant, the strength of the plastic cylinder body needs to be further improved. Therefore, the positions of the outlet side end portion 3210 and the inlet side end portion 3216 of the cylinder 321 are structurally improved.
Fig. 6 is a partially enlarged view of a portion a in fig. 3.
As shown in fig. 6, the cylinder 321 has an outlet side end portion 3210 provided on the outlet chamber side, and the outlet side end portion 3210 has an annular surface which is fitted to the housing 301 as a first fitting surface 3211; the annular cushion member 324 is mounted around the nail stem 323 at the air outlet side end portion 3210, and has an annular face abutting against the air outlet side end portion 3210 as a second abutting face 3212. The length of the second abutting surface 3212 in the axial direction of the cylinder 321 is at least half of the length of the first abutting surface 3211 in the axial direction.
When the piston 322 hits the ring-shaped buffer member 324, the impact force applied to the ring-shaped buffer member 324 can be rapidly transmitted to the metal shell 301 through the cylinder 321, so as to reduce the impact on the plastic cylinder 321. At this time, the more the first attachment surface 3211 and the second attachment surface 3212 overlap on the radial projection of the cylinder 321, the higher the efficiency of the impact force transmission, the lower the damage degree of the plastic cylinder, and the longer the service life.
As shown in fig. 5, the cylinder 321 has an intake side end portion 3216 provided on the intake chamber side.
The end seal fitting ring 326 is fitted to the intake side end portion 3216 of the cylinder 321 for sealing connection with an external member provided on the intake side end portion, which is a control valve unit in this embodiment.
Specifically, the end sealing engagement ring 326 has a sealing end face 3261 for abutting against the control valve unit 303 and a snap ring 3262 for fixing itself, the sealing end face 3261 covers an air inlet side end portion 3216 of the cylinder 321, a snap groove 3213 is further formed in the outer side of the air inlet side end portion 3216, and the end sealing engagement ring 326 is engaged in the snap groove 3213 through the snap ring 3262.
The fixing ring 325 is a metal ring fitted over the air inlet side end portion 3216, and in this embodiment, the fixing ring 325 is attached to the outside of the end seal fitting ring 326.
At the moment when the high-pressure gas enters the cylinder 321, the inlet side end portion 3216 of the cylinder 321 expands and deforms under the pressure of the high-pressure gas, and at this time, the sizing ring 325 can reinforce the inlet side end portion 3216 of the cylinder 321 to prevent the inlet side end portion 3216 from being broken. Meanwhile, since the soft end sealing and fitting ring 326 is disposed between the fixed ring 325 and the cylinder 321, the air inlet side end portion 3216 can be protected, and the air inlet side end portion 3216 is further prevented from being deformed or even bursting.
The middle outer side of the cylinder 321 is hermetically sleeved with a spacer 327, and the spacer 327 is hermetically combined with the shell 301. When high-pressure gas enters the cylinder unit, the spacer 327 can support and shape the middle cylinder 321, so as to prevent the middle part of the cylinder from deforming and even bursting.
Specifically, the spacer 327 is annular, a first spacer sealing ring 3271 is installed between an inner ring of the spacer 327 and the cylinder 321, a second spacer sealing ring 3272 is installed between an outer ring of the spacer 327 and the casing 301, and the first spacer sealing ring 3271 and the second spacer sealing ring 3272 are used for sealing and preventing gas leakage.
The spacer 327, the cylinder 321 and the housing 301 form a return air chamber 316 near the outlet side end 3210.
The cylinder 321 also has a plurality of first ducts 3214 disposed adjacent the outlet side end 3210 and a plurality of second ducts 3215 disposed adjacent the spacer 327. The first duct 3214 is used to communicate the air outlet cavity 312 and the air return chamber 316, and in this embodiment, 6 first ducts 3214 are provided, and are all long-shaped.
The second duct 3215 is used to communicate the air inlet chamber 317 and the air return chamber 316, and the second duct 3215 is a circular through hole and is circumferentially distributed on the cylinder 321.
An annular one-way air flow control member 328 covers all of the second apertures 3215 for blocking air flow within the check air chamber 316 to the inlet chamber 317. Specifically, the annular one-way airflow control member 328 is an annular membrane installed outside the cylinder 321 where the second duct 3215 is located. When high-pressure gas enters the low-pressure gas return chamber 316 from the high-pressure gas inlet chamber 317, the annular diaphragm expands, and the second duct 3215 is opened; on the contrary, when the high-pressure gas enters the low-pressure gas inlet chamber 317 from the high-pressure gas return chamber 316, the annular diaphragm does not change shape and always seals the second duct 3215, and plays a role of one-way conduction. The ultimate purpose is to allow the high pressure gas in the return chamber 316 to enter the outlet chamber 312, thereby pushing the piston 322 to reset.
The annular buffering member 324 is preferably a rubber buffer having a first tapered surface 3242 and a second tapered surface 3243 respectively connected to two sides of the first abutting surface 3211, the first tapered surface 3242 faces the air outlet cavity, and the second tapered surface 3243 faces away from the air outlet cavity.
The first port 3214 is provided at a position where the first tapered surface 3242 opposes the side wall of the cylinder 321. Specifically, the first duct 3214 is located in a triangular annular space formed by the first tapered surface 3242 and the sidewall of the cylinder 321. At this time, the first duct 3214 is prevented from being blocked by the piston 322, which facilitates the high-pressure gas in the return chamber 316 to enter the outlet chamber 312, thereby pushing the piston 322 to reset.
As shown in fig. 4, in order to further increase the strength of the plastic cylinder 321, the cylinder 321 has a plurality of first ribs 329 surrounding the outer wall of the cylinder 321 and a plurality of second ribs 330 parallel to the axis of the cylinder 321, the first ribs 329 having a ring shape or a spiral shape, and the second ribs 330 interfacing with the first ribs 329.
In order to facilitate the installation of the spacer 327, the outer diameter of the first reinforcing rib 329 close to the outlet side end portion 3210 of the cylinder 321 is smaller than the outer diameter of the first reinforcing rib 329 close to the inlet side end portion 3216 of the cylinder 321.
The specific operation process of the nail gun of the present embodiment is as follows:
before the nail is shot, as shown in fig. 3, the control chamber 317 and the air storage chamber 315 are both communicated with the air inlet channel 314 and filled with isobaric high-pressure gas; the piston 322 and the shooting pin rod 323 are located at the end of the cylinder 321 near the control valve unit 303.
Fig. 7 is a working schematic diagram of the power driving device of the present invention.
When the user shoots the nail, as shown in fig. 7, the user pulls the nail shooting switch 341 to open the air valve 342, so that the control chamber 317 is communicated with the outside; at the same time, the intake end of the intake passage 314 is closed, and the communicating portion of the control chamber 317 and the intake passage 314 is closed. At this time, the air pressure of the air reservoir 315 is higher than that of the control chamber 317, causing the control valve unit 303 to move backward, opening the parting plane; the high-pressure gas in the gas storage chamber 315 instantaneously turns into a gas bomb (the flow direction of the high-pressure gas is shown by a solid arrow in fig. 7), pushes the piston 322 of the cylinder unit 302 and the nail shooting shaft 323 to move at high speed in a direction approaching the annular buffer member 324, and strikes the nail in the gun nozzle 200, thereby realizing the nail shooting.
When the piston 322 moves between the second hole 3215 and the first empty island 3214, the high-pressure gas enters the gas return chamber 316 from the gas inlet cavity 311 through the second hole 3215 and the annular one-way gas flow control member 328, and the gas return chamber 316 temporarily stores a portion of the high-pressure gas. After the piston 322 impacts the annular buffer member 324, a portion of the high-pressure gas in the return chamber 316 (the flow direction of the high-pressure gas is shown by the dotted arrow in fig. 7) enters the outlet cavity 312 through the first hole 3214 and pushes the piston 322 to return, so as to be ready for the next nail shooting.
< actions and effects of the present example >
The present embodiment provides a cylinder unit and a nail gun comprising the same, the nail gun further comprises a housing, the cylinder unit comprises a cylinder body arranged in the housing, a piston movably arranged in the cylinder body and a nail shooting rod arranged on the piston. Wherein, the cylinder body is made of plastics, and the tensile strength of the plastics is 50MPa-100 MPa. This embodiment becomes traditional metal cylinder body into the plastics cylinder body, very big reduction the weight of cylinder body to alleviateed the weight of whole rifle, be favorable to having reduced user's working strength, also be favorable to the lightweight development of power actuated setting device simultaneously.
In addition, because the cylinder body is made by engineering plastics in this embodiment, the coefficient of friction between piston and the cylinder body is less, is equipped with the piston seal who seals with the inner wall of cylinder body on the piston, because engineering plastics's characteristics itself, can produce self-lubricating effect, is favorable to the piston to guarantee smoothly moving in the cylinder body when sealed.
In addition, the cylinder unit further comprises an annular buffer member, wherein the cylinder body is provided with an air outlet side end part arranged on the air outlet cavity side, the air outlet side end part is provided with an annular surface attached to the shell as a first attaching surface, the annular buffer member is installed on the air outlet side end part around the nail shooting rod and is provided with an annular surface attached to the air outlet side end part as a second attaching surface, and the length of the second attaching surface in the axial direction of the cylinder body is at least half of the length of the first attaching surface in the axial direction. When the piston impacts the annular buffering component, the impact force applied to the annular buffering component can be quickly transmitted to the metal shell through the cylinder body, so that the impact on the plastic cylinder body is relieved. At this time, the more the first attaching surface and the second attaching surface are overlapped in the radial projection length direction of the cylinder body, the higher the efficiency of impact force transmission is, the lower the damage degree of the plastic cylinder body is, and the longer the service life is.
In addition, the cylinder unit also comprises a spacer bush and an annular one-way airflow control part, the spacer bush is sleeved on the cylinder body in a sealing way and is combined with the shell in a sealing way, and the spacer bush, the cylinder body and the shell form an air return chamber at the end part close to the air outlet side; the annular one-way airflow control part covers all the second pore passages and is used for preventing airflow in the air return chamber from flowing to the air inlet cavity. When shooting the nail, high-pressure gas can get into the return-air chamber through the second pore, and after shooting the nail and accomplishing, the high-pressure gas of return-air chamber can get into out the gas cavity through first pore to promote the piston and reset, make ready for shooting the nail next time.
In addition, the annular buffering component is also provided with a first conical surface and a second conical surface which are respectively connected with two sides of the first binding surface, the first conical surface faces the air outlet cavity, the second conical surface deviates from the air outlet cavity, and the first pore channel is arranged on the position, opposite to the side wall of the cylinder body, of the first conical surface. This can prevent that first pore is blockked up by the piston, is favorable to the high-pressure gas of return air chamber to get into the air outlet cavity to promote the piston to reset.
In addition, the cylinder body has a plurality of first strengthening ribs that encircle the outer wall of cylinder body and a plurality of second strengthening ribs that are on a parallel with the axis of cylinder body, and first strengthening rib is annular or spiral, and the second strengthening rib hands over with first strengthening rib mutually to further improve the intensity of plastics cylinder body.
In addition, the cylinder unit further comprises a fixed ring, wherein the cylinder body is further provided with an air inlet side end portion arranged on the air inlet cavity side, and the fixed ring is made of metal and sleeved on the air inlet side end portion. When high-pressure gas got into the cylinder body in the twinkling of an eye, the side end portion of admitting air of cylinder body can expand, and at this moment, the side end portion of admitting air of cylinder body can be strengthened to the design circle, prevents it and breaks.
In addition, the cylinder unit also comprises an end part sealing embedding ring which is arranged between the end part of the air inlet side and the shaping ring, is embedded with the end part of the air inlet side and is used for being in sealing connection with an external component arranged on the end part of the air inlet side, and the external component is a control valve unit. The structure of the end part sealing embedded ring is convenient to install and is beneficial to increasing the sealing performance with the control valve unit.
The above embodiments are only for illustrating the specific embodiments of the present invention, but the present invention is not limited to the scope described in the above embodiments, and those skilled in the art can make various modifications or modifications within the scope of the appended claims without any inventive work.
Claims (9)
1. A cylinder unit for a nail gun, mounted in a housing of the nail gun, for providing power to impact a nail under the action of high pressure gas, comprising:
a cylinder body disposed in the housing;
the piston is movably arranged in the cylinder body and divides the inner cavity of the cylinder body into an air inlet cavity and an air outlet cavity; and
a nail ejecting bar mounted on the piston for striking the nail;
wherein, the cylinder body is made of plastics, and the tensile strength of the plastics is 50MPa-100 MPa.
2. The cylinder unit for a nail gun according to claim 1, further comprising:
an annular buffer member is disposed on the outer circumferential surface of the frame,
wherein the cylinder body is provided with an air outlet side end part arranged at the air outlet cavity side, the air outlet side end part is provided with an annular surface attached to the shell as a first attaching surface,
the annular buffer member is arranged at the air outlet end part around the nail shooting rod and is provided with an annular surface which is jointed with the air outlet end part as a second jointing surface,
the length of the second abutting surface in the axial direction of the cylinder body is at least half of the length of the first abutting surface in the axial direction.
3. The cylinder unit for a nail gun according to claim 2, further comprising:
the spacer bush is arranged on the cylinder body in a sealing way and is combined with the shell in a sealing way; and
the annular one-way airflow control part surrounds the cylinder body;
wherein the spacer bush, the cylinder body and the shell form a return air chamber at the end part close to the air outlet side,
the cylinder body is also provided with a plurality of first pore channels arranged close to the end part of the air outlet side and a plurality of second pore channels arranged close to the spacer bush,
the first pore passage is used for communicating the air outlet cavity with the air return chamber, and the second pore passage is used for communicating the air inlet cavity with the air return chamber;
the annular one-way airflow control part covers all the second pore passages and is used for preventing airflow in the air return chamber from flowing to the air inlet cavity.
4. The cylinder unit for a nail gun as set forth in claim 3, wherein:
wherein the annular buffer component is also provided with a first conical surface and a second conical surface which are respectively connected with two sides of the first binding surface,
the first conical surface faces the air outlet cavity, the second conical surface faces away from the air outlet cavity,
the first duct is disposed at a position where the first tapered surface opposes the side wall of the cylinder body.
5. The cylinder unit for a nail gun as set forth in claim 1, wherein:
wherein the cylinder body has a plurality of first reinforcing ribs surrounding an outer wall of the cylinder body and a plurality of second reinforcing ribs parallel to an axis of the cylinder body,
the first reinforcing rib is annular or spiral,
the second reinforcing rib is connected with the first reinforcing rib.
6. The cylinder unit for a nail gun according to claim 1 or 2, further comprising:
the shape-fixing ring is arranged on the outer side of the fixed ring,
wherein the cylinder block further has an intake side end portion disposed on the intake chamber side,
the fixed ring is made of metal and is sleeved on the end part of the air inlet side.
7. The cylinder unit for a nail gun according to claim 6, further comprising:
and the end part sealing embedding ring is arranged between the air inlet side end part and the shaping ring, is embedded with the air inlet side end part and is used for being connected with an external component arranged on the air inlet side end part in a sealing way.
8. A nail gun, comprising:
a housing; and
a cylinder unit installed in the housing for providing power to strike the nail under the action of high-pressure gas,
wherein the cylinder unit is the cylinder unit for a nail gun according to any one of claims 1 to 6.
9. The nailer of claim 8, further comprising:
a control valve unit provided as an external member of the cylinder unit on the intake side end portion of the cylinder unit,
wherein the cylinder unit is the cylinder unit for a nail gun set forth in claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120435545.0U CN214560585U (en) | 2021-02-26 | 2021-02-26 | Nail gun and cylinder unit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120435545.0U CN214560585U (en) | 2021-02-26 | 2021-02-26 | Nail gun and cylinder unit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214560585U true CN214560585U (en) | 2021-11-02 |
Family
ID=78351846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120435545.0U Active CN214560585U (en) | 2021-02-26 | 2021-02-26 | Nail gun and cylinder unit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214560585U (en) |
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2021
- 2021-02-26 CN CN202120435545.0U patent/CN214560585U/en active Active
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