CN217097627U

CN217097627U - Driving device for nail gun

Info

Publication number: CN217097627U
Application number: CN202220421845.8U
Authority: CN
Inventors: 竹再君; 杨明军; 周洪锋; 张云宰; 杨涛; 李海军
Original assignee: Taizhou Dajiang Industry Co Ltd
Current assignee: Taizhou Dajiang Industry Co Ltd
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2022-08-02
Anticipated expiration: 2032-02-25

Abstract

The utility model belongs to the technical field of fastening tools, in particular to a driving device for a nail gun, which comprises a striking mechanism, a driving device and a driving device, wherein the striking mechanism is used for being installed in the nail gun and has a striking direction for striking out a nail; the energy storage mechanism is used for being matched with the striking mechanism and providing power for the striking mechanism to move forward along the striking direction; the transmission mechanism is arranged on a driving motor of the nail gun and is used for being matched with the striking mechanism and providing power for the striking mechanism to move reversely along the striking direction; the transmission part of the transmission mechanism is directly provided with the limiting part matched with the limiting part for limiting the movement of the striking mechanism, so that a structure matched with the limiting part is not required to be additionally arranged on the firing pin part, the structure of the firing pin part is simplified, and the limiting relation between the limiting parts is not required to be released when the firing pin part fires because the limiting part is not in direct contact with the firing pin part, so that the structure is simplified, and the firing efficiency is improved.

Description

Driving device for nail gun

Technical Field

The utility model belongs to the technical field of fastening tool, concretely relates to drive arrangement for power actuated setting device.

Background

The nail gun is a fastening tool, is used for building construction mostly, at present, the widely used nail gun is an electric nail gun adopting lithium battery, the nail gun pushes the piston through the driving motor and the corresponding transmission structure, and then the piston compresses the force supply spring or the compressed gas to store energy, when the nail is shot, the force supply spring or the air pressure drives the piston to move, and then the firing pin arranged on the piston is driven to shoot the nail by striking.

In the existing nail gun, a transmission structure pushes a piston to generally adopt a transmission mode of a rack and a gear, namely, the rack is arranged on a firing pin, the gear is arranged on a driving motor, the driving motor drives the gear to rotate, and the rack and the gear are meshed with each other, so that the rack can be driven to move transversely in the process of gear rotation, and energy storage is realized by compressing a power supply spring or gas. When the gear rotates to the state of toothless meshing with the firing pin, the power supply spring or air pressure can push the firing pin out to realize nailing.

In order to avoid the gun nail from being fired by mistake due to incomplete matching (tooth missing) between the rack and the tooth groove in the process of pushing the rack to move by the transmission structure, a row of teeth are usually arranged on the other surface of the rack, a pawl (locking piece) matched with the teeth is arranged on the machine body, and the firing pin is prevented from being ejected through the unidirectional matching of the pawl and the teeth. However, in this structure, when the firing pin needs to be fired, the engagement between the pawl and the teeth must be released, and therefore, a solenoid valve that can drive the pawl to rotate is separately provided to the pawl. The electromagnetic valve has the defects of large heat productivity, high power consumption, short service life and easy failure in a low-temperature state, and if the electromagnetic valve fails, firing of the firing pin can be influenced, so that the electromagnetic valve has certain limitations.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the utility model provides a drive arrangement for nail gun that the structure is simpler, and the security is stronger, the utility model discloses a following technical scheme:

the utility model provides a driving device for a nail gun, which is arranged in the nail gun and is used for driving the nail gun to drive out nails, and has the technical characteristics that the driving device comprises a striking mechanism which is arranged in the nail gun and has a striking direction for striking out the nails; the energy storage mechanism is matched with the striking mechanism and provides power for the forward movement of the striking mechanism along the striking direction; the transmission mechanism is arranged on a driving motor of the nail gun and is used for matching with the striking mechanism and providing power for the reverse movement of the striking mechanism along the striking direction; wherein, strike the mechanism and have the firing pin part that is used for promoting the rifle nail and strikes the rifle nail along hitting the direction, the transfer mechanism has: the transmission component is used for matching with the firing pin component and driving the firing pin component to move reversely along the striking direction, the limiting component is used for matching with the transmission component to limit the movement of the firing pin component, and the transmission component is provided with a limiting part matched with the limiting component.

The utility model provides a drive arrangement for nail gun can also have such technical characteristic, and wherein, the drive disk assembly contains: the rotating part is driven by the driving motor to rotate; the matching part is arranged on the rotating part, is used for matching with the firing pin component and driving the firing pin component to do linear motion along the striking direction, and is provided with a plurality of tooth pins matched with the firing pin component; the limiting part is a ratchet wheel which is coaxial with the rotating part, a plurality of ratchets are arranged on the periphery of the ratchet wheel, and the limiting part is a pawl which is matched with the ratchets and is used for being embedded between the adjacent ratchets.

The utility model provides a drive arrangement for nail gun can also have such technical characterstic, and wherein, firing pin part contains the tooth's socket of a plurality of confession tooth round pin embeddings, and the interval between the adjacent ratchet is less than the width of tooth's socket.

The utility model provides a drive arrangement for nail gun can also have such technical characteristic, and wherein, the tooth round pin contains at least one activity tooth round pin, sets up the movable hole that supplies activity tooth round pin to remove in the rotating part, is equipped with elastic component between activity tooth round pin and the rotating part, and this elastic component has first spring, and the one end of this first spring acts on the rotating part, and the other end acts on the activity tooth round pin, offers the chamber that holds that is used for installing first spring in the rotating part.

The utility model provides a drive arrangement for nail gun can also have such technical characteristic, and wherein, energy storage mechanism includes: an energy storage component having an air cavity for containing a storage gas; the air charging component is arranged on the energy storage component and is used for charging air into the air cavity; the pressure relief component is arranged on the energy storage component and is used for relieving pressure in the air cavity; the energy storage component further has: the inner cylinder body is used for installing the striking mechanism; and the outer cylinder body is arranged on the outer side of the inner cylinder body, and an air cavity is formed between the outer cylinder body and the inner cylinder body.

The utility model provides a drive arrangement for power actuated setting device can also have such technical characteristic, and wherein, the outer cylinder body contains: the inner cylinder body is arranged in the outer cylinder body; the rear cover body is detachably arranged at the rear end of the outer cylinder body; and the first sealing element is used for forming a sealing state between the rear cover body and the outer cylinder body.

The utility model provides a drive arrangement for nail gun can also have such technical characteristic, and wherein, the front end of outer jar body is provided with the installation part that is used for installing transmission mechanism, and spacing part has: a positioning end combined with the mounting part through a rotating shaft;

the limiting end is matched with the limiting part; the connecting section is used for connecting the positioning end with the limiting end; a second spring is arranged between one side of the connecting section and the mounting part.

The utility model provides a drive arrangement for nail gun can also have such technical characteristic, and wherein, one side that outer jar body is close to the back lid is provided with the inflation inlet that is used for installing inflatable components, sets up the inlet channel of intercommunication inflation inlet and air cavity on the outer jar body.

The utility model provides a drive arrangement for nail gun can also have such technical characteristic, and wherein, energy storage mechanism still includes: the fixed plate is installed between the inner cylinder body and the outer cylinder body and used for supporting the inner cylinder body and is provided with a vent hole for air to pass through, a first limiting convex ring matched with the fixed plate is arranged on the periphery of the inner cylinder body, a second limiting convex ring matched with the fixed plate is arranged on the rear cover body, and the first limiting convex ring and the second limiting convex ring are located on the front side and the rear side of the fixed plate and used for limiting the fixed plate.

The utility model provides a drive arrangement for nail gun can also have such technical characteristic, wherein, hits the mechanism of beating and still has: the piston component is movably arranged in the inner cylinder body and used for installing the firing pin component, a second sealing element used for enabling the piston component and the inner wall of the inner cylinder body to form a sealing state is arranged on the periphery of the piston component, and a cushion pad used for buffering the piston component is fixed at the front end of the inner cylinder body; the inner cylinder body is internally divided into a first cavity and a second cavity with variable volumes by a piston part, the first cavity is communicated with the outside, the second cavity is communicated with the air cavity, and one end of the inner cylinder body, which is close to the cushion pad, is provided with an inner through hole which is communicated with the first cavity and the outside.

The utility model provides a drive arrangement for power actuated setting device can also have such technical characteristic, and wherein, the outer cylinder body has: the mounting clamp ring is formed on the inner wall of the outer cylinder body and is used for abutting against the front end face of the inner cylinder body; an outer through hole communicating with the inner through hole; and

the limiting surface is used for limiting the cushion pad to move; the periphery of the inner cylinder body is provided with a third sealing element used for forming a sealing state between the inner cylinder body and the outer cylinder body, and the outer through hole and the air cavity are respectively positioned at two sides of the third sealing element.

Utility model with the functions and effects

According to the utility model discloses a drive arrangement for nail shooting gun, owing to directly set up on drive disk assembly with be used for restricting the spacing part complex spacing part that the firing pin part removed, thereby need not to set up in addition on the firing pin part with spacing part complex structure again, the structure of firing pin part has been simplified, and because there is not direct contact between spacing part and the firing pin part, consequently, need not to relieve spacing relation between the spacing part when firing pin part transmission, promote and launch efficiency, and need not to set up drive arrangements such as special drive spacing part pivoted solenoid valve in spacing part department, simplify the structure, and therefore, the cost is reduced, thereby also solved the defect brought because of the solenoid valve inefficacy, let whole nail shooting gun at the during operation more high-efficient, it is stable and safe.

Drawings

Fig. 1 is a block diagram of a nail gun according to an embodiment of the present invention.

Fig. 2 is a structural view of the nail gun according to the embodiment of the present invention, with a part of the casing removed.

Fig. 3 is a structural diagram of a driving device in an embodiment of the present invention.

Fig. 4 is a sectional view of a driving device in an embodiment of the present invention.

Fig. 5 is an exploded view of the driving device according to the embodiment of the present invention.

Fig. 6 is a schematic view of the transmission mechanism and the striking mechanism cooperating with each other in the embodiment of the present invention.

Fig. 7 is a cross-sectional view of the transmission mechanism and striking mechanism cooperating structure in an embodiment of the present invention.

Fig. 8 is a second cross-sectional view of the engagement structure of the transmission mechanism and the striking mechanism according to the embodiment of the present invention.

Fig. 9 is a partially enlarged view of a portion a of fig. 3.

Fig. 10 is a partially enlarged view of fig. 4 at B.

Fig. 11 is a partial enlarged view of fig. 4 at C.

Fig. 12 is a partial enlarged view of fig. 4 at D.

Fig. 13 is a structural view of the outer cylinder body in the embodiment of the present invention.

Fig. 14 is a structural sectional view of the outer cylinder body in the embodiment of the present invention.

Fig. 15 is a structural view of the inner cylinder body in the embodiment of the present invention.

Fig. 16 is a partial enlarged view of fig. 4 at E.

Reference numerals: the nail gun comprises a nail gun 10, a containing device 20, a machine shell 21, a nail storage device 30, a driving device 40, a striking mechanism 41, a striker component 411, a tooth block 4111, a tooth groove 4112, a first tooth groove 4112 ', a piston component 412, a sealing ring 413, an energy storage mechanism 42, a transmission mechanism 43, a transmission component 431, a rotating part 4311, a tooth pin 4312, a movable tooth pin 4312', a mounting hole 43111, a movable hole 43112, a limiting component 432, a pawl 4321, a positioning end 4321a, a limiting end 4321b, a connecting segment 4321c, a rotating shaft 4321d, a second spring 4322, a positioning screw 4323, a limiting part 433, a ratchet 4331, a first spring 441, a top block 442, a limiting hole 4421, an energy storage component 45, an outer cylinder body 451, an outer cylinder body 4511, a rear cover 4512, a first sealing member 4513, an air inlet 4514, a pressure relief cavity 4515, a limiting surface 4516, a limiting boss 4517, an outer through hole 4518, a mounting part 4519a groove 4519a, a mounting groove 4519c, Positioning

holes

4519d, 4519e, an inner cylinder 452, a first cavity 4521, a second cavity 4522, an inner through hole 4523, a convex ring 4524, an air chamber 453, an air inlet channel 4531, a pressure relief channel 4532, a cushion 454, a through hole 4541, an installation convex ring 4542, a third seal 455, a positioning ring 456, an air hole 4561, an inflation part 46, a pressure relief part 47, a pressure relief valve body 471, a pressure relief valve core 472, a pressure relief spring 473, a pressure relief cavity 474, a limit blocking surface 4741, a pressure relief hole 475, a control device 50 and an output shaft 51.

Detailed Description

In order to make the technical means, creation features, achievement purposes and effects of the present invention easy to understand, the driving device for nail gun of the present invention is specifically described below with reference to the embodiments and the accompanying drawings.

< example >

The present embodiment provides a nail gun having a driving device for nail gun, which is more convenient to operate and can improve safety and nail-shooting effect.

The nail gun 10 of the present embodiment includes a housing unit 20, a nail magazine 30, a driving unit 40 for driving out nails, and a control unit 50 for controlling the driving of the driving unit. As shown in fig. 1 and 2, the receiving device 20 includes a housing 21 disposed at an outer side, a nail storage device 30 disposed at a front end of the housing 21, and a nail stored in the nail storage device 30. The control device 50 includes a battery, a control board, a circuit, a switch, a motor, etc. (not completely shown in the drawings), and is installed inside the housing 21 and on the surface thereof. The housing 21 can accommodate internal components such as the drive device 40 and the control device 50 and protect the internal components.

A drive means 40 is provided inside the housing 21 for acting on the gun nail to drive it out. As shown in fig. 3-5, the driving device 40 includes a striking mechanism 41 directly contacting the gun nail and configured to strike the gun nail, an energy storage mechanism 42 configured to provide power to the striking mechanism 41, and a transmission mechanism 43, wherein the striking mechanism 41 has a striking direction (i.e., a direction in which the gun nail is driven into the nailed object) for striking the gun nail, the energy storage mechanism 42 drives the striking mechanism 41 to move forward in the striking direction so as to strike the gun nail, and the transmission mechanism 43 drives the striking mechanism 41 to move backward in the striking direction so as to trigger the energy storage mechanism 42 to store energy.

The striking mechanism 41 has a striker member 411 and a piston member 412, wherein the inner end of the striker member 411 is inserted into the piston member 412, the piston member 412 is movably disposed inside the energy storage mechanism 42, and the outer end of the striker member 411 extends out of the energy storage mechanism 42 for pushing the gun nail and striking the gun nail in a striking direction.

The transmission mechanism 43 comprises a transmission member 431 and a limiting member 432, wherein the transmission member 431 is used for matching with the striker member 411 and driving the striker member 411 to move reversely along the striking direction, the limiting member 432 is used for matching with the transmission member 431 to limit the movement of the striker member 411, and the transmission member 431 is provided with a limiting part 433 matched with the limiting member 432.

As shown in fig. 6 and 7, one side of the striker member 411 is provided with a plurality of tooth blocks 4111, and tooth grooves 4112 are formed between adjacent tooth blocks 4111. The transmission member 431 includes a rotation portion 4311 and an engagement portion, the rotation portion 4311 is a circular ring structure with an i-shaped cross section, a mounting hole 43111 is formed in the middle of the rotation portion 4311, and the rotation portion 4311 can be mounted on an output shaft 51 of a control motor (not shown) of the nail gun through the mounting hole 43111, so that the rotation portion 4311 rotates under the driving of the control motor. The engagement portion is a plurality of teeth 4312 arranged on the rotation portion 4311, and the teeth 4312 are engaged in teeth grooves 4112 on the striker member 411 (as shown in fig. 7), so that the engagement between the transmission member 431 and the striker member 411 can be achieved. When the rotating portion 4311 is rotated by the control motor, the tooth pin 4312 is inserted into the tooth groove 4112, thereby moving the striker member 411 in the lateral direction. As shown in fig. 6, when the tooth pin 4312 rotates counterclockwise along with the rotating portion 4311, it drives the striker portion 411 to move rightward (based on the direction of the arrow shown in fig. 6, the direction of the arrow of the striker portion is the opposite direction of the striking direction).

As shown in fig. 7 and 8, the plurality of pins 4312 includes at least one movable pin 4312 ', the rotating portion 4311 has an oblong moving hole 43112 (as shown in fig. 5) for moving the movable pin 4312 ', and an elastic assembly is disposed between the movable pin 4312 ' and the rotating portion 4311, the elastic assembly includes: the first spring 441 has one end acting on the rotating portion 4311 and the other end acting on the movable pin 4312', and the rotating portion 4311 has a receiving cavity formed therein for receiving the first spring 441. The elastic component further has a top block 442 located between the first spring 441 and the movable pin 4312', and a side of the top block 442 facing the first spring 441 is provided with a limiting hole 4421 into which the first spring 441 is inserted or a limiting post (the limiting hole 4421 in fig. 7 of this embodiment) on which the first spring 441 is sleeved; the end of the top block 442 facing the movable rack pin 4312 'is provided with an active surface that contacts the movable rack pin 4312'.

Each tooth pin 4312 corresponds to one tooth groove 4112, in this embodiment, 9 tooth pins 4312 are provided, and the movable tooth pin 4312 ' is used as the first tooth pin and is configured to be inserted into the first tooth groove 4112 ', and the first tooth pin is configured to be movable, so that the first tooth groove 4112 ' can be ensured to be better inserted, if the movable tooth pin 4312 ' just touches the tooth block 4111 when triggered, because the movable tooth pin 4312 ' is configured to be movable, the movable tooth pin 4312 ' is pushed to slightly move in the movable hole 43112 under the reaction force of the tooth block 4111 and is inserted into the first tooth groove 4112 ' under the action of the first spring 441 (as shown in fig. 7), so that the first tooth pin and the first tooth groove can be normally matched to avoid the occurrence of jamming and the like. As the toothed pins 4312 follow the rotating portion 4311 for continued counterclockwise rotation, each toothed pin progressively rides in each corresponding toothed slot, thereby moving the striker member 411 progressively to the right (as viewed in fig. 8). In the counterclockwise direction, the tooth pins between the first tooth pin to the nth tooth pin are uniformly arranged at the edge of the rotating portion 4311, and the adjacent two tooth pins 4312 have the first gap of the same distance therebetween; in the clockwise direction, a second gap is formed between the first tooth pin and the nth tooth pin, and the second gap is larger than the first gap. When the rotating part 4311 moves to the second gap toward the striker member 411, the rotating part 4311 and the striker member 411 are in the idle state because no tooth pin is provided between the second gaps, and the striker member 411 in this state can be triggered by the energy storage mechanism to move in the striking direction, so that the gun nail is struck.

As shown in fig. 6, the limiting part 433 is a ratchet wheel coaxially disposed with the rotating part 4311, both the ratchet wheel and the rotating part 4311 are sleeved on the output shaft 51 of the control motor of the nail gun, and the ratchet wheel and the rotating part 4311 are fixedly connected together by a bolt and synchronously rotated with the rotating part 4311 under the driving of the control motor, the periphery of the ratchet wheel is provided with a plurality of ratchet teeth 4331, and the limiting part 432 is provided with a pawl 4321 mutually matched with the ratchet teeth 4331 for being embedded between adjacent ratchet teeth. As shown in fig. 6, the distance between adjacent ratchet teeth 4331 is smaller than the width of the tooth slot 4112, so that the pawl can be engaged with the ratchet teeth more tightly and firmly without falling out. This embodiment adopts the mutual mode of cooperation of above-mentioned pawl and ratchet to compare among the prior art that adopt the pawl directly to come the cooperation with tooth groove 4112 and want inseparable more firm, because the interval between the ratchet 4331 is far less than the width of tooth groove 4112, the problem that the ratchet breaks away from among the difficult prior art that appears. Of course, the spacing between adjacent ratchet teeth 4331 is set to be equal to the width of tooth groove 4112 or greater than the width of tooth groove 4112, but the effect is much less than the above-mentioned manner in which the spacing between adjacent ratchet teeth 4331 is set to be smaller than the width of tooth groove 4112.

In practice, the limiting portion 433 may also be a ratchet directly and integrally disposed on the rotating portion 4311 (i.e. the rotating portion 4311 is thicker, and a ratchet is directly disposed on the periphery of the upper portion of the rotating portion 4311, which is not shown in the drawings), which can ensure that the limiting portion 433 and the rotating portion rotate synchronously, and reduce the number of parts, but has higher requirements on the processing technology of the rotating portion. As shown in fig. 4, the energy storage mechanism 42 includes an energy storage member 45, an inflation member 46 and a pressure relief member 47, the energy storage member 45 has an outer cylinder body 451 and an inner cylinder body 452, the outer cylinder body 451 includes an outer cylinder body 4511 and a rear cover 4512 covering the rear end of the outer cylinder body 4511, the rear cover 4512 is detachably disposed, an air chamber 453 is formed in the inner side of the outer cylinder body 4511, and an inner cylinder body 452 is further installed inside the outer cylinder body 4511. The inner cylinder 452 is a long cylindrical ring structure, the striking mechanism 41 is installed inside the inner cylinder 452, the outer periphery of the piston part 412 of the striking mechanism 41 is tightly attached to the inner wall of the inner cylinder 452, a sealing ring 413 is arranged between the piston part 412 and the inner wall of the inner cylinder 452 in a pressing mode, the piston part 412 is fixed with the striker component 411, and the front end of the striker component 411 extends out of the inner cylinder 452 and the front end of the outer cylinder body 4511 to be matched with the transmission component 431. As shown in fig. 4, the piston portion 412 and the packing 413 divide the interior of the inner cylinder 452 into two separate portions, a first chamber 4521 and a second chamber 4522, the volumes of which change during the movement of the piston portion 412, the second chamber 4522 communicates with the air chamber 453, the first chamber 4521 is separated from the second chamber 4522 and communicates with the outside, and the front end of the inner cylinder 452 is provided with an inner through hole 4523 communicating the first chamber 4521 with the outside. The rear cover 4512 is detachably provided to facilitate detachment of the outer cylinder body, thereby replacing or repairing the striking mechanism 41 inside. In order to form a sealed space inside the air cavity, a first sealing element 4513 is disposed at a joint of the rear cover 4512 and the outer cylinder body 4511, so as to enhance the connection tightness between the rear cover 4512 and the outer cylinder body 4511, and avoid the air leakage of the air cavity 453, and in this embodiment, the first sealing element 4513 is a sealing ring (as shown in fig. 10).

The air chamber 453 is filled with air or nitrogen, and since the striking mechanism 41 is installed inside the inner cylinder 452, when the striker 411 is moved by the driving member 431, the piston part 412 moves toward the second chamber 4522, and the volume of the second chamber 4522 gradually decreases, so that the air in the air chamber 453 is compressed, and the air pressure inside the air chamber gradually increases, thereby accumulating energy. When the rotating portion 4311 of the transmission member 431 rotates to the second gap toward the striker member 411 (i.e., when the striker member 411 is in the state of empty teeth), the striking mechanism 41 can be pushed out in the striking direction under the air pressure in the air chamber 453, thereby effecting nailing.

Fig. 10 is a partially enlarged view of fig. 4 at B.

To facilitate the replenishment of the gas in the gas chamber 453, an inflation member 46 is provided at an end of the outer cylinder body 4511 adjacent to the rear cover 4512. As shown in fig. 4 and 10, an air inlet 4514 is formed in the outer cylinder 4511 near the rear cover 4512, and an air inlet 4531 communicating with the air chamber 453 and the air inlet 4514 is formed in the outer cylinder 4511 on the side of the air inlet 4514. The inflation component 46 is an inflation nozzle with an inflation channel 461 at the middle, the inner end of the inflation nozzle is inserted into the air inlet 4514, and the outer end extends out of the outer cylinder body 4511 and is exposed outside, so that a user can conveniently inflate the inflation nozzle.

Fig. 11 is a partial enlarged view of fig. 4 at C.

Front end one side of outer cylinder body 4511 is provided with pressure release part 47, and in this embodiment, pressure release part 47 is an automatic relief valve, and when atmospheric pressure in air cavity 453 crescent and reached the critical value of setting for, automatic relief valve can open automatically and carry out the pressure release in air cavity 453 for atmospheric pressure in air cavity 453 remains throughout within this critical value, in order to guarantee the inside security of outer cylinder body 4511. In addition, the outer end of pressure release part 47 exposes in the outside of outer cylinder body 4511, when the user need dismantle the inspection to the outer cylinder body, also can rely on the manual work earlier to open the pressure release valve, dismantles the gas escape of the inside of air cavity 453 again, avoids because the inside atmospheric pressure of air cavity is too high, leads to striker part to be sent to the user by mistake, strengthens the security of product.

Specifically, as shown in fig. 11, a pressure relief cavity 4515 is formed at one side of the front end of the outer cylinder body 4511, and a pressure relief passage 4532 communicating the pressure relief cavity 4515 with the air chamber 453 is formed in the outer cylinder body 4511. The automatic pressure relief valve is provided with a pressure relief valve body 471, a pressure relief valve core 472 and a pressure relief spring 473, wherein one end of the pressure relief valve body 471 is fixedly arranged in the pressure relief cavity 4515, and the other end of the pressure relief valve body 471 extends out and is exposed out of the outer side of the outer cylinder body 4511. A pressure relief cavity 474 communicated with the pressure relief cavity 4514 is formed in the middle of the pressure relief valve body 471, a pressure relief hole 475 communicated with the pressure relief cavity 474 and the outside is formed in the side surface of the pressure relief valve body 471, the pressure relief valve core 472 is movably arranged in the pressure relief cavity 474 through a pressure relief spring 473, and a limiting blocking surface 4741 matched with the pressure relief valve core 472 is formed in the side wall of the pressure relief cavity 474. When the automatic pressure relief valve is closed, the pressure relief valve core 472 blocks the communication between the pressure relief accommodating cavity 474 and the pressure relief cavity 4515 under the action of the pressure relief spring 473, and at this time, the pressure relief valve core 472 is tightly attached to the limiting blocking surface 4741, so that the gas in the gas cavity 453 cannot be discharged. When the air pressure in the air cavity 453 gradually increases and exceeds a predetermined value, the air enters the pressure relief accommodating cavity 474 through the pressure relief passage 4532 and the pressure relief cavity 4515 and gradually pushes the pressure relief valve spool 472, and when the pressure relief valve spool 472 is pushed away from the limit blocking surface 4741 to form a gap, the air can pass through the gap and be discharged from the pressure relief hole 475, so that the inside of the air cavity 453 is relieved. When the air pressure in the air chamber 453 drops to a predetermined value, the pressure relief valve core 472 is pushed to return under the action of the pressure relief spring 473, so that the pressure relief valve core is tightly attached to the limit blocking surface 4741. The automatic pressure release valve does not need manual starting during operation, and can be automatically opened according to the change inside the air cavity 453 to protect the air cavity 453.

Fig. 12 is a partial enlarged view of fig. 4 at D.

As shown in fig. 4, the front end of the inner cylinder 452 is fixedly connected to the front end of the outer cylinder 451, and a cushion 454 is provided at the connection, and a through hole 4541 through which the front end of the striker member extends is formed in the middle of the cushion 454. The inner end surface of the cushion 454 serves to cushion the piston part 412, the piston part 412 is pushed by the air pressure in the air chamber 453 to move forward (striking direction), the piston part 412 can move until being blocked by the cushion 454, and the cushion 454 can block and cushion the piston part 412, so as to prevent the piston part 412 from directly colliding with the inner side surface of the outer cylinder body, and protect the piston part 412.

As shown in fig. 11 and 12, the specific installation structure of the cushion 454 is: the inner cylinder body 452 is a sleeve structure with a circular cross section, an installation convex ring 4542 is formed on the periphery of the cushion 454, a limiting surface 4516 and a limiting boss 4517 are formed on the inner side of the front end of the outer cylinder body 4511, the front end of the cushion 454 abuts against the limiting surface 4516 (as shown in fig. 4), and the front end surface of the inner cylinder body 452 abuts against the installation convex ring 4542 and the limiting boss 4517, so that the cushion 454, the inner cylinder body 452 and the outer cylinder body 4511 are connected. As shown in fig. 12, a third packing 455 is provided between the outer periphery of the inner cylinder 452 and the inner wall of the outer cylinder 4511, the third packing 455 is two packing rings, and the front end of the outer cylinder 4511 is provided with an outer through-hole 4518 outside the inner through-hole 4523, and the inner through-hole 4523 communicates with the outer through-hole 4518, thereby communicating the first chamber 4521 with the outside. On the transverse section, interior through-hole 4523 and outer through-hole 4518 are located the front side of third sealing member, and air cavity 453 is located the rear side of third sealing member, and third sealing member 455 not only can play the effect of strengthening the connection tightness, can also separate air cavity 453 and first cavity 4521, forms two independent spaces, avoids air cavity 453 and external looks UNICOM and receives the influence of external atmospheric pressure.

Fig. 9 is a partially enlarged view of a portion a of fig. 3.

As shown in fig. 13, the front end of the outer cylinder body 4511 is provided with a mounting portion 4519, the mounting portion 4519 is formed with a groove 4519a for mounting a transmission member, and the groove 4519a has a shape adapted to a rotating portion of the transmission member, i.e., a circular ring shape. A mounting groove 4519b is formed in one side of the mounting portion 4519a, which is located at the groove 4519a, of the mounting portion 4519, the pawl 4321 of the limiting part 432 is mounted in the mounting groove 4519b, and a hole 4519c through which one end of the pawl 4321 passes is formed in one side of the mounting groove 4519a, which faces the mounting groove 4519 b.

As shown in fig. 9, the pawl 4321 has a positioning end 4321a, a limiting end 4321b and a connecting segment 4321c, the positioning end 4321a is rotatably mounted in the mounting groove 4519b via a rotating shaft 4321d, and the limiting end 4321b extends into the groove 4519a through a hole 4519c on the side wall of the groove 4519a and is matched with the ratchet 4331 on the ratchet wheel in the groove 4519 a; the connecting section 4321c is a portion connecting the positioning end 4321a and the limiting end 4321b, a second spring 4322 is disposed on one side of the connecting section 4321c, a positioning screw 4323 is inserted into the mounting portion 4519 to support one end of the second spring 4322, two ends of the second spring 4322 are respectively abutted to the positioning screw 4323 and the connecting section 4321c, and under the action of the second spring 4322, the limiting end 4321b of the pawl 4321 can better cooperate with the ratchet 4331, so that the limiting end 4321b is embedded in the ratchet 4331 to prevent the ratchet from rotating reversely. Meanwhile, as shown in fig. 13, the mounting portion 4519 is provided with

positioning holes

4519d and 4519e corresponding to the rotation shaft 4321d and the positioning screw 4323, and the

positioning holes

4519d and 4519e are respectively used for mounting the rotation shaft 4321d and the positioning screw 4323. The ratchet 4331 and the pawl 4321 are matched to prevent the ratchet wheel from rotating reversely, and the ratchet wheel and the rotating part are coaxially arranged, so that the rotating part can be prevented from rotating reversely, the striker part can be prevented from being shot by mistake, and the safety is higher.

Fig. 15 is a structural view of an inner cylinder body in an embodiment of the present invention.

Fig. 16 is a partial enlarged view of fig. 4 at E.

As shown in fig. 4, the inner cylinder 452 is installed inside the outer cylinder body 4511, and the front end of the inner cylinder 452 is connected to the inner wall of the outer cylinder body 4511 through a third sealing member 455 and locked. In order to enable the inner cylinder 452 to be more stably arranged inside the outer cylinder 4511, as shown in fig. 15, a protruding ring 4524 is arranged at one end of the inner cylinder 452 away from the third sealing member 455, a circular positioning ring 456 is arranged at one side of the protruding ring 4524, and an air hole 4561 for air to pass through is formed in the positioning ring 456. As shown in fig. 16, the inner circumference of the positioning ring 456 is fitted over the outer circumference of the inner cylinder 452, and is abutted by the convex ring 4524 on one side, and the outer circumference of the positioning ring 456 is stopped by the end surface of the rear cover 4512 facing the outer cylinder body 4511, so that the positioning ring 456 can be retained between the rear cover 4512 and the convex ring 4524, and the connection stability between the structures is enhanced. The third sealing member 455 and the positioning ring 456 respectively support the front and rear ends of the inner cylinder 452, so that the inner cylinder 452 can be more stably fixed inside the outer cylinder 4511.

The working principle of the embodiment is as follows:

when the control motor in the control device 50 of the nail gun is turned on to drive the transmission member 431 to rotate, the rotating part 4311 gradually cooperates with the tooth groove 4112 on the striker member 411 from the first tooth pin (movable tooth pin 4312') during the rotation process, so as to drive the striker member 411 and the piston member 412 to move in the opposite direction to the striking direction inside the inner cylinder 452, the volume of the second chamber 4522 gradually decreases during the movement process of the piston member 412, so as to compress the gas in the gas chamber 453, the gas pressure in the gas chamber 453 gradually increases to store energy, and when the rotating part 4311 continuously rotates to form a tooth empty state with the striker member 411, the piston member 412 and the striker member 411 are pushed out in the striking direction under the pushing of the gas pressure in the gas chamber 45, so as to allow the striker member 411 to eject the nail to complete the nail shooting operation.

In the rotation process of the rotation part 4311, the ratchet wheel also rotates along with the rotation part 4311, the pawl 4321 is matched with the ratchet 4331 at the periphery of the ratchet wheel to prevent the ratchet wheel from reversely rotating, so that the condition that the striker part is mistakenly sent in the working process is better avoided, and the safety is enhanced.

Examples effects and effects

According to the driving device for the nail gun of the embodiment, since the driving member 431 is directly provided with the limit part which is matched with the limit part 432 for limiting the movement of the striker member 411, a structure which is matched with the limit part 432 is not required to be additionally arranged on the striker member 411, the structure of the striker member 411 is simplified, and since the limit part 432 is not directly contacted with the striker member 411, the limit relation between the limit parts 432 is not required to be released when the striker member 411 is launched, namely, a driving device such as an electromagnetic valve which specially drives the limit part 432 to rotate is not required to be arranged at the limit part 432, the structure is simplified, the cost is reduced, the defects caused by the failure of the electromagnetic valve are overcome, and the whole nail gun is more efficient, stable and safe in operation.

The transmission member 431 of this embodiment includes a rotating portion 4311 for connecting to a driving motor of the nail gun and rotating by the driving of the driving motor, and an engaging portion which is a plurality of tooth pins 4312 distributed on the rotating portion and engages with the tooth grooves 4112 of the striker member 411 through the tooth pins 4312, so that the transmission member 431 and the striker member 411 are engaged with each other to drive the striker member 411 to move. The use of the toothed pin 4312 in cooperation with the toothed slot 4112 provides a more stable transmission because the gear and rack are more easily engaged.

The spacing part 433 of this embodiment is the ratchet with the coaxial setting of rotating part, and the periphery is equipped with a plurality of ratchets 4331, spacing part 432 is the pawl 4321 of mutually supporting with ratchet 4331, be used for between the adjacent ratchet 4331 of embedding, set the ratchet to be coaxial with rotating part 4311, make rotating part 4311 and ratchet can carry out synchronous revolution, thereby pawl 4321 and ratchet mutually support can restrict rotating part 4311 antiport, and then realize the restriction to the removal of striker part 411, promote the security, and ratchet and rotating part 4311 are directly driven by same driving motor, need not to put in addition the power supply, simplified structure, and reduce cost, weight reduction, conveniently carry and use.

The distance between the ratchets 4331 on the ratchet wheel of the embodiment is smaller than the width of the tooth groove 4112 on the striker component 411, and compared with the fact that the pawl 4321 is directly matched with the tooth groove 4112, the more stable connectivity is achieved, the smaller the distance is, the tightness and the accuracy of matching of the pawl 4321 are higher, the certainty that the pawl 4321 is disengaged is greatly reduced or even eliminated, so that the probability of accidental firing of the striker component 411 is reduced, and the safety performance is improved.

In the embodiment, at least one of the toothed pins 4312 is a movable toothed pin 4312 ', when the transmission member 431 and the striker member 411 are matched with each other, the toothed pin 4312 needs to be embedded into the toothed groove 4112 one by one, and in the actual use process, the toothed pin 4312 is not completely aligned with the toothed groove 4112, so that the toothed pin 4312 directly collides with the toothed block 4111, and cannot be normally engaged, driven and clamped, and the like, and the toothed pin 4312 is movably arranged, so that when the movable toothed pin 4312 ' collides with the toothed block 4111, the movable toothed pin 4312 ' slightly moves under the action of an impact force and is accurately embedded into the toothed groove 4112, thereby avoiding the transmission member 431 and the striker member 411 from being clamped, avoiding personal injury caused by accidental firing of gun nails due to clamping of the two, and further enhancing safety.

The energy storage mechanism of this embodiment includes two inside and outside cylinder bodies, sets up the air cavity between two inside and outside cylinder bodies, and interior cylinder body 452 sets up in the outer cylinder body 4511 of outer cylinder body 451, and the inside hitting mechanism 41 that sets up of interior cylinder body 452 drives hitting mechanism 41 through transfer mechanism 43 and realizes that the nailing is realized to the change of air cavity internal gas pressure, and the rear side of outer cylinder body 4511 is provided with detachable back lid 4512, thereby convenient dismantlement is maintained or is replaced the hitting mechanism 41 that is located inside cylinder body 452.

Because the energy storage mechanism 42 of the embodiment is provided with the pressure relief component 47 leading to the air cavity 453, when the air pressure in the air cavity 453 increases and exceeds a preset safety critical value, the pressure relief component 47 can automatically open to relieve the pressure in the air cavity 453, so that the air pressure in the air cavity can be always within the safety critical value, and the safety performance of the equipment is ensured; meanwhile, the energy storage mechanism 42 is further provided with an air charging member 46 leading to the air chamber 453, so that the inside of the air chamber 453 can be charged with air when necessary, which is very convenient.

The outer cylinder body 451 of the energy storage mechanism of the embodiment is directly and integrally formed with the mounting part 4519, the mounting part 4519 is used for mounting the transmission part 431, the mounting part 4519 is made into a universal piece, when different guns are required to be suitable, only the corresponding striker part 411 and the transmission part 431 need to be replaced, the whole equipment does not need to be replaced, and the applicability is wide; when a user needs to carry out construction under various conditions, the user does not need to carry nail guns with various different nails, only needs to carry matched striker parts and transmission parts, and is very convenient to carry.

The above embodiments are merely used to illustrate specific embodiments of the present embodiment, and the present invention is not limited to the description scope of the above embodiments.

Claims

1. A driving device for a nail gun, provided in a nail gun, for driving the nail gun to drive out a nail, comprising:

a striking mechanism provided in the nail gun and having a striking direction for striking the nail;

the energy storage mechanism is matched with the striking mechanism and provides power for the forward movement of the striking mechanism along the striking direction; and

the transmission mechanism is arranged on a driving motor of the nail gun and is used for being matched with the striking mechanism and providing power for the reverse movement of the striking mechanism along the striking direction;

wherein the striking mechanism has a striker member for pushing the gun nail and striking the gun nail in the striking direction,

the transmission mechanism includes:

a transmission member for engaging with the striker member and driving the striker member to move in a reverse direction in the striking direction, an

A limit member for limiting movement of the striker member in cooperation with the transmission member,

and the transmission part is provided with a limiting part matched with the limiting part.

2. The driving apparatus for a nail gun according to claim 1,

wherein, the transmission part contains:

the rotating part is driven by the driving motor to rotate;

the matching part is arranged on the rotating part, is used for matching with the firing pin component and driving the firing pin component to do linear motion along the striking direction, and is provided with a plurality of tooth pins matched with the firing pin component;

the limiting part is a ratchet wheel which is coaxial with the rotating part, a plurality of ratchets are arranged on the periphery of the ratchet wheel, and the limiting part is a pawl matched with the ratchets and is used for being embedded between the adjacent ratchets.

3. The driving apparatus for a nail gun according to claim 2,

wherein the striker member has a plurality of tooth grooves into which the tooth pins are fitted,

the distance between the adjacent ratchet teeth is smaller than the width of the tooth grooves.

4. The driving apparatus for a nail gun according to claim 2 or 3,

wherein the gear pin comprises at least one movable gear pin, the rotating part is provided with a movable hole for the movable gear pin to move,

an elastic component is arranged between the movable gear pin and the rotating part,

the elastic component is provided with a first spring, one end of the first spring acts on the rotating part, the other end of the first spring acts on the movable gear pin,

and an accommodating cavity for mounting the first spring is formed in the rotating part.

5. The driving apparatus for a nail gun according to any one of claims 1 to 3,

wherein, energy storage mechanism includes:

an energy storage component having an air cavity for containing a storage gas;

the inflation component is arranged on the energy storage component and is used for inflating the air cavity; and

the pressure relief component is arranged on the energy storage component and used for relieving pressure in the air cavity;

the energy storage component further has:

the inner cylinder body is used for mounting the striking mechanism;

and the outer cylinder body is arranged on the outer side of the inner cylinder body, and the air cavity is formed between the outer cylinder body and the inner cylinder body.

6. The driving apparatus for a nail gun according to claim 5,

wherein the outer cylinder body comprises:

the inner cylinder body is arranged in the outer cylinder body;

the rear cover body is detachably arranged at the rear end of the outer cylinder body; and

and the first sealing element is used for forming a sealing state between the rear cover body and the outer cylinder body.

7. The driving apparatus for a nail gun according to claim 6,

wherein the front end of the outer cylinder body is provided with a mounting part for mounting the transmission mechanism,

the stopper member has:

the positioning end is combined with the mounting part through a rotating shaft;

the limiting end is matched with the limiting part; and

the connecting section is used for connecting the positioning end with the limiting end;

a second spring is arranged between one side of the connecting section and the mounting part.

8. The driving apparatus for a nail gun according to claim 6,

the air cavity is formed in the outer cylinder body, one side of the outer cylinder body, close to the rear cover body, is provided with an inflation inlet used for installing the inflation component, and the outer cylinder body is provided with an air inlet channel communicated with the inflation inlet and the air cavity.

9. The driving apparatus for a nail gun according to claim 6, wherein:

wherein, energy storage mechanism still includes:

a fixing plate installed between the inner cylinder and the outer cylinder to support the inner cylinder and having a vent hole through which gas passes,

the periphery of the inner cylinder body is provided with a first limit convex ring matched with the fixing plate,

the rear cover body is provided with a second limit convex ring matched with the fixing plate,

the first limiting convex ring and the second limiting convex ring are located on the front side and the rear side of the fixing plate and used for limiting the fixing plate.

10. The driving apparatus for a nail gun according to claim 5,

wherein the striking mechanism further has:

a piston component movably arranged in the inner cylinder body and used for installing the firing pin component,

the periphery of the piston component is provided with a second sealing element used for forming a sealing state between the piston component and the inner wall of the inner cylinder body,

a buffer pad for buffering the piston component is fixed at the front end of the inner cylinder body;

the inner cylinder body is divided into a first cavity and a second cavity with variable volumes by the piston part, the first cavity is communicated with the outside, the second cavity is communicated with the air cavity, and one end of the inner cylinder body, which is close to the cushion pad, is provided with an inner through hole communicated with the first cavity and the outside.

11. The driving apparatus for a nail gun according to claim 10,

wherein the outer cylinder body has:

the mounting clamp ring is formed on the inner wall of the outer cylinder body and is used for abutting against the front end face of the inner cylinder body;

an outer through hole in communication with the inner through hole; and

the limiting surface is used for limiting the cushion pad to move;

and a third sealing element used for forming a sealing state between the inner cylinder body and the outer cylinder body is arranged on the periphery of the inner cylinder body, and the outer through hole and the air cavity are respectively positioned on two sides of the third sealing element.