CN116000876A - Driving device for nail gun and nail gun - Google Patents

Abstract

The invention provides a driving device for a nail gun and a nail gun, wherein the motor is accommodated in a motor accommodation chamber in a housing, and the motor accommodation chamber has at least one circle of blocking protrusions that fit the motor, The air intake and exhaust holes are distributed on both sides of the barrier protrusion. Therefore, the motor can absorb low-temperature gas from the outside of the housing through the air intake holes to cool the motor, and can discharge high-temperature gas through the exhaust holes. Since there is a blocking protrusion between the air intake hole and the exhaust hole, the high-temperature gas can be discharged out of the housing as much as possible without flowing in the housing, thereby effectively improving the heat dissipation effect of the motor; in addition, based on the reducer The shape characteristics of the reducer are clamped between the block-shaped protrusions in the housing to limit the position, and the reducer shell is fixedly connected to the upper end surface of the motor through the motor end cover, so that the motor can be effectively limited without the need The structure of additionally fixing the motor can reduce the number of parts and facilitate assembly and maintenance.

Description

Driving device for nail gun and nail gun

technical field

The invention belongs to the technical field of fastening tools, and in particular relates to a driving device for a nail gun and a nail gun.

Background technique

The nail gun is a commonly used fastening tool, which is mostly used in construction, and the nail is shot out through its firing pin. In the past, nail guns used a pneumatic structure, which was relatively complex and large in size. Therefore, in order to make the nail gun easier to maintain and carry, most nail guns currently use an electric structure, and the energy storage mechanism is driven by a motor to store energy. , to provide power for nailing. However, when the motor is driven to store energy, the motor will rotate at a high speed. In order to prevent the motor from being shaken and damaged, causing the nail gun to vibrate to affect the nailing accuracy, and even bring safety hazards, the motor needs to be fixed. The special motor fixing base cooperates with multiple screws to fix the motor in the gun shell. It can be seen that its structure is still relatively complicated and there are many parts, which is not suitable for quick assembly and maintenance. In addition, in order to ensure the normal operation and service life of the motor, it is necessary to ensure the heat dissipation effect of the motor. Although the current nail gun is provided with cooling holes at the casing of the motor part, however, since the motor is contained in the casing, the heat discharged from the motor A large part of the high-temperature gas still flows to the air inlet of the motor in the casing, so that the motor sucks part of the high-temperature gas, which affects the heat dissipation effect and service life of the motor.

Contents of the invention

The present invention is made to solve the above problems, and the purpose is to provide a driving device for a nail gun that can ensure the heat dissipation effect of the motor, has a simpler structure, and is easier to assemble and maintain, and a nail gun using the driving device for a nail gun , the present invention adopts following technical scheme:

The present invention provides a driving device for a nail gun, which is characterized in that it comprises: a nail-driving mechanism, used to move along a predetermined nail-shooting direction, and hit the nail to make it shoot out; an energy storage mechanism, used to cooperate with the nail The mechanism cooperates and provides power for the movement of the nail driving mechanism along the nail shooting direction; the energy storage drive mechanism is used for cooperating with the nail driving mechanism and providing power for the reverse movement of the nail driving mechanism along the nail shooting direction providing power; and a casing, the nail striker mechanism, the energy storage mechanism and the energy storage driving mechanism are all accommodated in the casing, wherein the energy storage driving mechanism at least includes a motor, and one end of the motor has a heat dissipation The other end has an exhaust hole for heat dissipation. The housing has a motor accommodating cavity for accommodating the motor. The inner surface of the motor accommodating cavity has at least one circle of blocking protrusions. When the motor is accommodated in the motor accommodating cavity, the blocking protrusion fits with the middle part of the motor; the motor accommodating cavity is provided with an air inlet for the motor and an exhaust hole for the motor, respectively It is provided on both sides of the blocking protrusion.

The driving device for a nail gun provided by the present invention can also have such technical features, wherein, the middle part of the motor is cylindrical, and the housing includes a left casing and a right casing that match each other, and the left casing Both the inner surface of the casing and the right casing have a plurality of strip-shaped protrusions, the end faces of which are arc-shaped, and match the middle part of the motor, when the left casing and the right casing are combined together When forming the motor accommodating cavity, the strip-shaped protrusions on the inner surface of the left casing are combined with the strip-shaped protrusions corresponding to the inner surface of the right casing to form multiple turns of the barrier protrusions. rise.

The driving device for a nail gun provided by the present invention may also have such a technical feature, wherein, when the motor is housed in the motor accommodating cavity, the motor exhaust holes are located at two adjacent barriers. Between the protrusions, there are multiple motor exhaust holes distributed between the two barrier protrusions.

The driving device for a nail gun provided by the present invention may also have such technical features, wherein the energy storage driving mechanism further includes: a motor end cover fixedly connected to the upper end surface of the motor; and a reducer fixedly connected to the end cover of the motor to increase the torque of the motor, the reducer includes a reducer housing, a core set inside the reducer housing and an output shaft connected to the core, the The output end of the motor is connected to the movement of the reducer, and the housing also has a reducer accommodating cavity, which communicates with the motor accommodating cavity, and the reducer is accommodated and fitted in the reducer accommodating cavity.

The driving device for a nail gun provided by the present invention may also have such technical features, wherein, the outer contour of the cross-section of the main part of the reducer housing is square, the outer contour of the cross-section of the upper end is circular, and the circle The diameter of the shape is greater than the side length of the square, and the casing includes a left casing and a right casing that match each other, and the inner surfaces of the left casing and the right casing have grid-shaped protrusions and block-shaped Protrusions, between the grid-shaped protrusions and the block-shaped protrusions form a connected reducer upper end accommodating groove and a reducer main body accommodating groove, the width of which is the same as the upper end and main body of the reducer housing Partially matched, when the left casing and the right casing are combined together, the two accommodating grooves at the upper end of the reducer and the two accommodating grooves at the main body of the reducer are combined to form the accommodating groove for the reducer cavity.

The driving device for a nail gun provided by the present invention may also have such a technical feature, wherein a plurality of Reducer cooling holes.

The driving device for the nail gun provided by the present invention can also have such technical features, wherein, the upper end surface of the motor also has two upper end connection holes, and the reducer housing also has four reducer connection holes, They are respectively located at the four corners of the main part of the reducer casing, and one end of the reducer used for connecting the motor has a circular groove, and the energy storage drive mechanism also includes a motor end cover for connecting For the motor and the reducer, the motor end cover includes: the main body of the motor end cover, which is in the shape of a disc; On one surface of the main body of the motor end cover; and the raised part for connecting the motor is formed on the other surface of the main body of the motor end cover, and the middle part of the motor end cover is provided with a second relief hole for The output end of the motor makes way, and the main body of the motor end cover is provided with at least two counterbores and four motor end cover connection holes, and the positions of the two counterbores and the two upper connection holes Correspondingly, the positions of the four connecting holes of the motor end cover correspond to the four connecting holes of the reducer.

The driving device for the nail gun provided by the present invention may also have such technical features, wherein, the number of the air intake holes for heat dissipation is four, arranged on the circular upper end surface of the motor and evenly distributed along the circumference, The two upper connection holes are respectively located between the adjacent two air intake holes for heat dissipation, and the raised portion for connecting the motor is a cross-shaped protrusion. When the motor end cover is arranged on the upper end of the motor , and when the two counterbores are aligned with the two upper-end connection holes, the four ends of the motor connection boss are respectively staggered from the four heat-dissipating air inlets.

The driving device for a nail gun provided by the present invention may also have such a technical feature, wherein, the reducer further includes a one-way bearing connected to the output shaft and located outside the upper end of the reducer housing for In order to make the output shaft rotate in one direction, the shape of the one-way bearing is cylindrical and has a gap on one side. The energy storage drive mechanism also includes a reducer end cover connected to the upper end of the reducer for protection The one-way bearing includes: the main body part of the reducer end cover, which is cylindrical in shape, and has a bearing accommodation groove matching the one-way bearing on one side for accommodating the one-way bearing. The bottom of the slot has a through first relief hole, which is used to make relief for the output shaft; four connecting protrusions extend outward from the side of the main body of the reducer end cover, and along the The circumference of the main part of the reducer end cover is evenly distributed, and each of the connecting protrusions is provided with a reducer end cover connection hole, and the distribution of the four reducer end cover connection holes is similar to that of the four reducer end cover Corresponding to the connecting hole; and a limiting protrusion, extending from the side wall of the bearing accommodating groove to the middle, and matching with the notch of the one-way bearing, for fitting with the notch so as to align the The one-way bearing mentioned above is limited.

The present invention provides a nail gun, which is characterized in that it comprises: the above-mentioned driving device for the nail gun, which is used to drive the nails to be ejected; The nails are stored and provided to the nail gun with the drive.

Invention function and effect

According to the driving device for the nail gun and the nail gun of the present invention, it includes a nail driving mechanism for firing nails, an energy storage mechanism for powering the nail driving mechanism for driving nails, and a driving mechanism for driving the nail driving mechanism to move backwards so that An energy storage drive mechanism and a housing for storing energy in the energy storage mechanism. Wherein, the energy storage driving mechanism includes a motor, and the motor is housed in a motor accommodating chamber in the casing, and there is at least one ring of barrier protrusions attached to the motor in the motor housing cavity, distributed on both sides of the barrier protrusions. The air intake hole for the motor and the exhaust hole for the motor, therefore, the motor can suck in low-temperature gas from the outside of the casing through the air intake hole for the motor, which is used for cooling the motor, and can discharge the high-temperature air through the exhaust hole for the motor. For gas discharge, since there is a blocking protrusion between the air intake hole and the exhaust hole, the high temperature gas can be discharged out of the casing as much as possible without flowing in the casing, thus effectively meeting the intake and exhaust requirements of the motor , Improve the heat dissipation effect of the motor.

Description of drawings

Fig. 1 is the perspective view of nail gun in the embodiment of the present invention;

Fig. 2 is the perspective view of the partial structure of the nail gun in the embodiment of the present invention;

Fig. 3 is a perspective view of the rivet mechanism, the energy storage mechanism and the driving wheel in the embodiment of the present invention;

Fig. 4 is a deconstructed exploded view of the energy storage drive mechanism in the embodiment of the present invention;

Fig. 5 is the perspective view of motor in the embodiment of the present invention;

Fig. 6 is a perspective view of the speed reducer in the embodiment of the present invention;

Fig. 7 is a perspective view of the end cover of the reducer in the embodiment of the present invention;

Fig. 8 is a perspective view of a motor end cover in an embodiment of the present invention;

Fig. 9 is a perspective view of different angles of the motor end cover in the embodiment of the present invention;

Fig. 10 is a perspective view of the left casing in an embodiment of the present invention;

Fig. 11 is a perspective view of the right casing in the embodiment of the present invention;

Fig. 12 is an enlarged view of the part inside frame A in Fig. 10;

FIG. 13 is an enlarged view of a portion inside frame B in FIG. 11 .

Reference signs:

Nail gun 10; firing pin baffle 12; left casing 20; upper main body part 21 of left casing; lower main body part 22 of left casing; handle part 23 of left casing; connecting part 24 of left casing; first reducer end cover accommodation groove 241; the first reducer upper end accommodation groove 242; the first reducer main body accommodation groove 243; the reducer cooling hole 243a; the strip-shaped protrusion 244; the first motor accommodation groove 245; the motor air intake hole 245a; A cooling hole 245b for the motor; an exhaust hole 245c for the motor; the first cylindrical protrusion 246; the right casing 30; Part 34; second reducer end cover accommodation groove 341; reducer heat dissipation hole 341a; second reducer upper end accommodation groove 342; second reducer main body accommodation groove 343; reducer heat dissipation hole 343a; strip-shaped protrusion 344; the second motor accommodating groove 345; the cooling hole 345a for the motor; the second cylindrical protrusion 346; the nail mechanism 40; the striker 41; Energy mechanism 50; Regulation frame 51; Guide rod 52; Spring assembly 53; Energy storage drive mechanism 60; Motor 61; Motor output end 611; Gear 62; Reducer housing 621; Reducer connecting hole 621a; Reducer output shaft 622; One-way bearing 623; Square notch 623a; Motor end cover 63; Motor end cover main body 631; 631b; the raised part 632 for the reducer connection; the raised part 633 for the motor connection; the second relief hole 634; the reducer end cover 64; the main part of the reducer end cover 641; Hole 6412; Protruding part 642 for connection; Connecting hole 642a of reducer end cover; Limiting raised part 643; Driving wheel 65; Wheel body 651; First pushing protrusion 6511; Second pushing protrusion 6512; 70; Nozzle 71; Nail box 72.

Detailed ways

In order to make the technical means, creative features, goals and effects of the present invention easy to understand, the driving device for the nail gun and the nail gun of the present invention will be described in detail below in conjunction with the embodiments and accompanying drawings.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

<Example>

Fig. 1 is a perspective view of the nail gun in this embodiment.

Fig. 2 is a perspective view of the partial structure of the nail gun in this embodiment. In order to show the internal structure, the structure of the right casing is omitted in Fig. 2 .

As shown in Figures 1 and 2, the nail gun 10 includes a driving device for the nail gun and a nail box assembly 70, wherein the driving device for the nail gun includes a housing, a nail mechanism 40, an energy storage mechanism 50 and an energy storage mechanism. drive mechanism 60. The nail gun 10 also includes a lithium battery not shown in the figure, etc., which are conventional settings and will not be described in detail.

The nail magazine assembly 70 includes a gun nozzle 71 and a nail magazine 72 . The nail magazine 72 is used for storing nails, and the nails can be supplied to the gun mouth 71 places. The gun mouth 71 is used for accommodating the nail to be fired, and plays a guiding role on the nail during the firing process.

The casing is used for accommodating and fixing internal components, and the casing 20 includes a left casing 20 , a right casing 30 and a striker baffle 12 . Wherein, the left casing 20 and the right casing 30 are matched with each other and can be assembled to form a shell shape. When the left casing 20 and the right casing 30 are assembled together, a replacement opening for replacing the striker 31 is formed at the top, and the striker baffle 12 Removably mounted at this replacement opening.

The striker mechanism 40 includes a striker 41 and a piston 42 . The striker 41 is a sheet-like piece made of metal, and its tail is detachably connected to one side of the piston 42 through a bolt. Driven by the piston 42, the striker 41 moves along the predetermined nail-shooting direction and hits the nail at the nozzle 71. make it shoot.

Fig. 3 is a perspective view of the hammering mechanism, the energy storage mechanism and the driving wheel in this embodiment.

As shown in FIG. 3 , the energy storage mechanism 50 is used to cooperate with the nail driver 40 and provide power for the nail driver 40 to move along the nail firing direction. The energy storage mechanism 50 includes a regulation frame 51 , a guide rod 52 and a spring assembly 53 . The regulation frame 51 is a square open frame, the guide rod 52 is arranged in the regulation frame 51, the piston 52 is sleeved on the guide rod 52 and is located in the regulation frame 51, and can move along the extending direction of the guide rod 52, and the spring assembly 53 includes two Power supply springs with different sizes are all sleeved on the guide rod 52 , one end of the spring is in contact with the inner end of the regulation frame 51 , and the other end is in contact with the piston 42 .

Fig. 4 is an exploded view of the energy storage drive mechanism in this embodiment.

As shown in FIG. 4 , the energy storage driving mechanism 60 is used to drive the nail driving mechanism 40 to move in the direction opposite to the nail firing direction (energy storage direction), so as to compress the spring assembly 52 for energy storage. The energy storage drive mechanism 60 includes a motor 61 , a reducer 62 , a motor end cover 63 , a reducer end cover 64 and a driving wheel 65 .

Fig. 5 is a perspective view of the motor in this embodiment.

The motor 61 is used to drive the driving wheel 65 to rotate. In this embodiment, the motor 61 is a standard 560 motor, and its shape is roughly cylindrical. The upper end surface of the motor 61 has a motor output end 611, four oblong heat-dissipating air intake holes 612 and two upper end connection holes 613, and the four motor air intake holes 612 surround the motor output end 611 and are uniform along the circumference. The two upper connection holes 613 are distributed on both sides of the output end 611 of the motor. The lower end of the motor 61 has four oblong exhaust holes 614 for heat dissipation, which are evenly distributed along the circumference. The motor 61 is connected to a circuit board by wires, and a plurality of switch assemblies are also connected to the circuit board by wires. Therefore, the operation of the motor 61 can be controlled through the action of the sky gate assembly.

The speed reducer 62 is connected to the output end of the driving motor 61, and is used to reduce the rotation speed of the output end of the driving motor 61, so as to obtain a higher output torque, that is, increase its driving force.

Fig. 6 is a perspective view of the speed reducer in this embodiment.

As shown in FIG. 6 , the speed reducer 62 includes a speed reducer housing 621 , a movement (not shown) inside the speed reducer casing 621 , a one-way bearing 623 connected with the movement, and a speed reducer output shaft 622 . Along the extension direction of the output shaft 622 of the reducer, the outer contour of the section of the main part of the reducer housing 621 is a square with chamfered corners, and the outer contour of the cross section of the upper end of the reducer housing 621 is circular, and the diameter of the circle is greater than the side length of the square. The reducer housing 621 has four reducer connecting holes 621a passing through from its upper end surface to its lower end surface. The circumference is evenly distributed; the lower end surface of the reducer housing 621 is a square with chamfered corners, and the four reducer connecting holes 621a are distributed at the four corners of the lower end surface when viewed from the lower end surface. The overall lower end of the speed reducer 62 (ie, the end for connecting the motor 61 ) has a substantially circular groove.

The one-way bearing 623 is roughly cylindrical, connected to the output shaft 622 of the reducer, and located outside the upper end of the reducer casing 621 . One side of the one-way bearing 623 has a square notch 623a.

The reducer end cover 64 is connected to the upper end of the reducer 62 for protecting and fixing the one-way bearing 623 .

Fig. 7 is a perspective view of the end cover of the reducer in this embodiment.

As shown in FIG. 7 , the reducer end cover 64 includes a reducer end cover main body 641 , a plurality of connection protrusions 642 and a position-limiting protrusion 643 .

The main body portion 641 of the reducer end cover is cylindrical in shape, with a circular bearing accommodating groove 6411 on one side, and a circular first relief hole 6412 communicating with the other side in the middle of the bottom of the bearing accommodating groove 6411 .

A plurality of connecting protrusions 642 extend outward from the side of the reducer end cover main body 641 . In this embodiment, there are four connecting protrusions 642 , which are evenly distributed along the circumference of the reducer end cover main body 641 . Each connecting boss 642 is provided with a reducer end cover connecting hole 642a, and each reducer end cover connecting hole 642a has internal threads, and the distribution of the four reducer end cover connecting holes 642a is consistent with that of the four reducer The distribution of the connecting holes 621a is corresponding.

The limiting protrusion 643 is a square protrusion, which is disposed in the bearing accommodating groove 6311 and extends from the side wall of the relief groove 6311 to the middle thereof.

When assembling, place the reducer end cover 64 on the upper end of the reducer 62, make the reducer output shaft 622 pass through the first relief hole 6312, insert the one-way bearing 623 into the bearing accommodation groove 6311, and then turn the reducer end cover 64. Align the four reducer end cover connection holes 642a with the four reducer connection holes 621a respectively, and make the limit protrusion 643 fit with the square notch 623a of the one-way bearing 623, so that four connection Parts (screws), the reducer end cover 64 and the reducer 62 are fixedly connected.

The motor end cover 63 is used to connect the motor 61 and the reducer 62 .

Fig. 8 and Fig. 9 are respectively perspective views of two different angles of the motor end cover in this embodiment.

As shown in FIG. 8 and FIG. 9 , the motor end cover 63 includes a motor end cover main body portion 631 , a protruding portion 632 for connecting a reducer, and a protruding portion 633 for connecting a motor.

The main body portion 631 of the motor end cover is disc-shaped. The reduction gear connection boss 632 is a substantially annular protrusion formed on one surface of the motor cover main body 631 . The protruding part 633 for motor connection is a generally cross-shaped protrusion formed on the other surface of the main body part 631 of the motor end cover.

The middle part of the motor end cover 63 has a circular second relief hole 634 passing through. The main body portion 631 of the motor end cover defines four counterbore holes 631 a and four motor end cover connecting holes 631 b. The four counterbores 631 a are disposed adjacent to the outer edge of the protruding portion 632 for connecting the reducer, and are evenly distributed along the circumference of the protruding portion 632 for connecting the reducer. Viewed from the surface of the motor end cover 63 having the motor connection protrusion 633 , the openings of the four counterbores 631 a on this surface are located at the four ends of the cross shape of the motor connection protrusion 633 . In addition, the outer edge of the reducer connecting boss 632 has four notches, which are also part of the four counterbores 631a. The four motor end cover connection holes 631b are respectively arranged between two adjacent counterbores 631a. Viewed from the surface of the motor end cover 63 with the motor connection protrusion 633, the opening of the motor end cover connection hole 631b on this side is It is located between both ends of the cross shape of the motor connection boss 633 .

When installing, the motor end cover 63 is first installed on the upper end of the motor 61, the motor output end 611 passes through the second relief hole 634, and the two counterbores 631 are respectively connected to the two upper end connection holes 613 on the upper end surface of the motor 61. Align, and set the connecting piece (screw) to connect the motor end cover 63 and the motor 61 fixedly. Then, the reducer 62 is placed on the motor end cover 63, and the four reducer connection holes 621a of the reducer 62 are respectively aligned with the four motor end cover connection holes 631b, and the connectors (screws) are set to connect the reducer 62 It is fixedly connected with the motor end cover 63. After being connected, the motor 61 and the speed reducer 62 cannot rotate relative to each other. Since the speed reducer 62 is stuck in the slot and cannot rotate, the motor 61 cannot rotate in the cavity either.

In addition, after connection, the four heat dissipation air intake holes 612 on the upper end surface of the motor 61 are respectively located between the two ends of the cross-shaped motor connection protrusion 633, that is, the motor end cover 63 does not block the four heat dissipation holes. Use air inlet 612.

The driving wheel 65 is used to push the piston 42 to move in the energy storage direction, and compress the spring assembly 53 to store energy. The driving wheel 65 includes a wheel body 651 and a cylindrical first pushing protrusion 6511 and a second pushing protrusion 6512 arranged on the same surface of the wheel body 651, and the height of the first pushing protrusion 6511 is higher than that of the second pushing protrusion From 6512.

As shown in FIG. 3 , one side of the piston 42 has a first resisting end 421 and a second resisting end 422 , and the extending directions of the two are substantially perpendicular to each other. When the piston 42 is installed in the regulating frame 51 , the first resisting end 421 and the second resisting end 422 extend from the open side of the regulating frame 51 . With the rotation of the driving wheel 65, first the second pushing protrusion 6512 abuts against the second pushing end 422, and pushes the piston 42 to move the compression spring, and then, the second pushing protrusion 6512 leaves the second pushing end as it rotates. 422, at the same time, the first pushing protrusion 6511 rotates to the first resisting end 421 and abuts against it, pushing the piston 42 to further move the compression spring. After the two-stage compression energy storage is completed, the firing can be performed. After the user presses the nail-shooting switch, the driving motor 61 drives the driving wheel 65 to rotate further. With the rotation, the first pushing protrusion 6511 breaks away from the first resisting end 421, and the piston 42 moves to the nail shooting direction under the action of spring force, bumps the nail at gun mouth 71 place and makes it shoot out.

Fig. 10 is a perspective view of the left casing in this embodiment.

Fig. 11 is a perspective view of the right casing in this embodiment.

As shown in Fig. 2, Fig. 10 and Fig. 11, the left case 20 can be divided into an upper main part 21 of the left case, a lower main part 22 of the left case, a handle part 23 of the left case, and a connecting part 24 of the left case. Wherein the handle part 23 of the left case and the connecting part 24 of the left case are both connected between the upper main part 21 of the left case and the lower main part 22 of the left case. Similarly, the right casing 30 can also be divided into a right casing upper body part 31 , a right casing lower body part 32 , a right casing handle part 33 and a right casing connecting part 34 . The energy storage drive mechanism 60 is accommodated in the cavity formed by the combination of the left shell connecting portion 24 and the right shell connecting portion 34 .

FIG. 12 is an enlarged view of the inner portion of frame A in FIG. 10 , showing the structure of the inner surface of the left case connecting portion 24 of the left case 20 .

FIG. 13 is an enlarged view of the inner portion of frame B in FIG. 11 , showing the structure of the inner surface of the right case connecting portion 34 of the right case 30 .

As shown in Figure 12, the upper part of the left case connecting part 24 is used to accommodate the speed reducer 62 and its end cover, and the inner surface of the upper part of the left case connecting part 24 has grid-shaped protrusions and block-shaped protrusions, and the grid-shaped Between the protrusion and the block-shaped protrusion, the first reducer end cover accommodation groove 241, the first reducer upper end accommodation groove 242 and the first reducer main body accommodation groove 243 are sequentially formed from top to bottom, wherein, along the left In the plane direction of the casing 20, the width of the first reducer main body accommodating groove 243 is adapted to the main body of the reducer 62, and the width of the first reducer upper end accommodating groove 242 is larger than that of the first reducer main body accommodating groove 242 The width is greater than the diameter of the upper end of the reducer 62 , the width of the first reducer end cover accommodating groove 241 is smaller than the first reducer upper end accommodating groove 242 , and matches the width of the reducer end cover 64 .

As shown in Figure 13, the inner surface of the upper part of the right shell connecting part 34 is similar to the inner surface of the upper part of the left shell connecting part 24, with grid-shaped protrusions and block-shaped protrusions, and the grid-shaped protrusions and block-shaped A second reducer end cover accommodating groove 341 , a second reducer upper end accommodating groove 342 and a second reducer main body accommodating groove 343 are formed between the protrusions.

After the left casing 20 and the right casing 30 are assembled, the first reducer end cover accommodating groove 241 and the second reducer end cover accommodating groove 341 are combined to form a reducer end cover accommodating cavity, and the reducer end cover 64 accommodates In the accommodating chamber of the reducer end cover. The first reducer upper end accommodation groove 241, the first reducer main body accommodation groove 242, the second reducer upper end accommodation groove 341, and the second reducer main body accommodation groove 342 are combined to form a reducer accommodation chamber, and the reducer 62 Accommodated in the reducer accommodating cavity, its upper end fits in the first reducer main body accommodating groove 242 and the second reducer main body accommodating groove 342, and is blocked by block-shaped protrusions from the upper and lower sides; deceleration The main body of the reducer 62 is accommodated in the first reducer main body accommodating groove 242 and the second reducer main body accommodating groove 342, and is laterally clamped by the block-shaped protrusions on both sides.

In the right housing connection portion 34, a plurality of reducer heat dissipation holes 341a are also opened at the bottom of the second reducer upper end accommodation groove 342, and a plurality of reducer cooling holes 341a are also opened at the bottom of the second reducer main body accommodation groove 343. Heater cooling holes 342a. In this embodiment, there are six cooling holes 341 a of the reducer, all of which are parallelogram holes arranged in a line. There are seven heat dissipation holes 342a of the reducer, all of which are parallelogram holes and are arranged in a straight line, which are different from the heat dissipation holes 341a of the reducer in the inclination direction and inclination angle. On the left housing connecting portion 24 , a quadrilateral reducer cooling hole 243 a is opened at the bottom of the first reducer main body accommodation groove 243 .

In addition, on the inner surface of the left shell connecting portion 24, two first cylindrical protrusions 246 are respectively provided on both sides of the reducer accommodating cavity, and the middle part of the first cylindrical protrusions 246 has a circular groove; On the inner surface of the shell connection part 34, two second cylindrical protrusions 346 are provided on both sides of the reducer accommodation chamber. The middle part of the second cylindrical protrusions 346 has a circular groove, and the bottom of the groove has a through installation hole. , the setting of the second cylindrical protrusion 346 is matched with the first cylindrical protrusion 246. After the left casing 20 and the right casing 30 are assembled, the corresponding position of the first cylindrical protrusion 246 and the second cylindrical protrusion Screws 346 are connected to form fastener installation holes for installing casing fasteners (screws). After the screws are installed, the four screws can also enhance the structural strength of the reducer accommodating chamber from both sides, which can prevent the motor 61 from driving the reducer 62 to vibrate and laterally extrude the housing to cause its deformation.

The bottom of the left shell connecting portion 24 is used to accommodate the motor 61 and its end cover. The inner surface of the bottom of the left shell connecting portion 24 has a plurality of strip-shaped protrusions 244 parallel to each other. The end surfaces of the strip-shaped protrusions 244 are concave. The arc shape matches the shape of the motor 61 , and a first motor accommodating groove 245 is formed between the strip protrusions 244 . In this embodiment, there are five strip-shaped protrusions 244. After the motor 61 is installed, one of them is located at the upper end of the motor 61, two are located at the lower end of the motor 61, and the other two are located at the middle of the motor 61 and are close to the upper and lower sides of the motor 61. end. The air intake hole 612 for heat dissipation of the motor 61 is located above the first strip-shaped protrusion 244 , and the exhaust hole 614 for heat dissipation is located between the third and fourth strip-shaped protrusions 244 .

The inner surface of the lower part of the right housing connecting portion 34 also has a plurality of similar strip-shaped protrusions 344 forming a second motor accommodating groove 345 , which will not be repeated here.

After the left casing 20 and the right casing 30 are assembled, the first motor accommodating groove 245 and the second motor accommodating groove 345 are combined to form a motor accommodating cavity, and the motor 61 and the motor end cover 63 are accommodated in the motor accommodating cavity . The strip-shaped protrusions at corresponding positions are combined to form a ring of blocking protrusions, and the air inlet hole 612 for heat dissipation and the exhaust hole 614 for heat dissipation are separated by three parallel circles of blocking protrusions.

In addition, in the left case connecting portion 24, the bottom of the first motor accommodating groove 245 is provided with an air intake hole 245a for the motor, a cooling hole 245b for the first motor, and an exhaust hole 245c for the motor. The power supply motor 61 draws in external air for cooling, which is a rectangular hole located above the first strip-shaped protrusion 244 . The cooling hole 245b for the motor is used for the power supply machine 61 to dissipate heat. There are two cooling holes 245b for the motor, all of which are rectangular holes. Between the three strip-shaped protrusions 244 . The exhaust hole 245c for the motor is used for the power supply 61 to discharge the high-temperature gas, which is a square hole and is arranged between the third and fourth strip-shaped protrusions 244 .

On the right housing connection portion 34, the bottom of the second motor accommodating groove 345 is provided with a plurality of motor heat dissipation holes 345a, which are located between the third and fourth strip-shaped protrusions 344, and are also used for the power supply 61 to dissipate high temperature. Gas out. In this embodiment, there are eight cooling holes 345a for the motor, all of which are rectangular holes, arranged in two rows between the third and fourth strip-shaped protrusions 344 .

The strip-shaped protrusions on the inner surfaces of the left shell connecting part 24 and the right shell connecting part 34 are all set to basically fit the shape of the motor 61. After the assembly is completed, the gap between the motor 61 and the blocking protrusions is much smaller than the above-mentioned heat dissipation. Dimensions of holes, intake holes, and exhaust holes. By doing this, most of the gas inhaled from the air intake hole 245a for the motor can enter into the motor 61 through the air intake hole 612 for heat dissipation, and most of the gas discharged from the exhaust hole 614 for heat dissipation by the motor 61 can pass through The motor is vented with the cooling hole 345a.

In addition, the above-mentioned grid-shaped protrusions, block-shaped protrusions, and strip-shaped protrusions are also used as reinforcing ribs on the inner surface of the casing to enhance the overall strength of the casing.

Function and effect of embodiment

The driving device for the nail gun and the nail gun 10 provided according to this embodiment include a nail driving mechanism 40 for driving nails, an energy storage mechanism 50 for powering the nail driving mechanism 40, and a driving mechanism 50 for driving the nail. The nail mechanism 40 reversely moves so that the energy storage mechanism 50 stores the energy storage driving mechanism 60 and the housing. Wherein, the energy storage driving mechanism 60 includes a motor 61, and the motor 61 is housed in a motor accommodating cavity in the casing, and there is at least one ring of barrier protrusions attached to the motor in the motor accommodating cavity, distributed among the barrier protrusions. The air intake hole 245a and the exhaust hole 245c for the motor on both sides are formed, therefore, the motor can inhale gas with a lower temperature from the outside of the housing through the air intake hole 245a for the motor, for cooling the motor 61, and can The high-temperature gas is discharged through the exhaust hole 245c for the motor. Since a barrier protrusion is provided between the air intake hole and the exhaust hole, the high-temperature gas can be discharged outside the housing as much as possible without flowing in the housing, thereby It can effectively meet the intake and exhaust requirements of the motor 61 and improve the heat dissipation effect of the motor 61 .

In the embodiment, multiple turns of barrier protrusions parallel to each other are provided between the intake hole and the exhaust hole of the motor 61 , so that the barrier can be more effectively prevented and the heat dissipation effect can be prevented from being affected by the flow of high-temperature gas in the housing.

In the embodiment, the upper end surface of the motor 61 is fixedly connected to the reducer casing 621 through the motor end cover 63, and the cross-sectional outline of the main part of the reducer casing 621 is square, so it can be engaged with the block-shaped protrusions and meshes in the casing. Between the grid-shaped protrusions, the reducer 62 does not rotate laterally as a whole. Since the upper end surface of the motor 61 is fixedly connected to the reducer housing 621, and the motor 61 is embedded between the barrier protrusions that fit its shape, Therefore, it can effectively prevent the motor 61 from rotating and shaking in the housing during operation, thereby ensuring the safety and stability of nail shooting. Moreover, through such a structural design, the position is limited based on the shape characteristics of the reducer housing, and the complicated structure of fixing the motor is no longer required, which further reduces the structural complexity of the nail gun 10 and reduces the number of parts , Conducive to assembly and maintenance.

In the embodiment, one surface of the motor end cover 63 is a ring-shaped protrusion that can fit into the lower end of the reducer 62, and the other surface is a cross-shaped protrusion. When connecting the upper end surface of the motor 61, the cross-shaped protrusion The four end portions raised are staggered with the four air intake holes 612 for heat dissipation on the upper end surface of the motor 61 . Therefore, using such a motor end cover 63 ensures the connection strength and does not affect the air intake and heat dissipation of the motor 61 .

The above-mentioned embodiments are only used to illustrate the specific implementation manners of the present invention, and the present invention is not limited to the description scope of the above-mentioned embodiments.

In the above-mentioned embodiment, the heat dissipation holes and exhaust holes of the motor 61 and the reducer 62 are mainly arranged on the right casing 30, and the air intake holes of the motor 61 are arranged on the left casing 20. The design of the left and right casings.

In the above-mentioned embodiment, when the motor 61 is installed in the casing, the air intake hole 612 for heat dissipation and the exhaust hole 614 for heat dissipation are blocked by three rings of blocking protrusions, so that the suction gas enters the motor 61, And the high-temperature gas discharged from the motor 61 is discharged out of the casing through the cooling holes as much as possible. In the alternative, more rings of blocking protrusions can be set between the cooling air intake hole 612 and the cooling exhaust hole 614 to ensure For the barrier effect, in the case where the barrier protrusions and the motor 61 are closely bonded and the barrier effect is good, only one ring of barrier protrusions may be provided.

In the above-mentioned embodiments, the heat dissipation holes, exhaust holes, etc. are mostly rectangular holes, and in alternative solutions, the heat dissipation holes, exhaust holes, etc. may also be holes of other shapes.

Claims (10)

1. A driving device for a nail gun, characterized in that it comprises: The nail driving mechanism is used to move along the predetermined nail shooting direction and hit the nail to make it shoot out; The energy storage mechanism is used to cooperate with the nail-driving mechanism and provide power for the nail-driving mechanism to move along the nail-shooting direction; an energy-storage drive mechanism, configured to cooperate with the nail-driving mechanism and provide power for the reverse movement of the nail-driving mechanism along the nail-shooting direction; and a casing, the nail striker mechanism, the energy storage mechanism and the energy storage drive mechanism are all housed in the casing, Wherein, the energy storage drive mechanism at least includes a motor, one end of the motor has an air intake hole for heat dissipation, and the other end has an exhaust hole for heat dissipation, The housing has a motor accommodating cavity for accommodating the motor, The inner surface of the motor accommodating cavity has at least one ring of blocking protrusions, and when the motor is accommodated in the motor accommodating cavity, the blocking protrusions fit in the middle of the motor; The motor accommodating cavity has an air intake hole for the motor and an exhaust hole for the motor, which are respectively arranged on both sides of the blocking protrusion. 2. The driving device for a nail gun according to claim 1, characterized in that: Wherein, the middle part of the motor is cylindrical, The casing includes a left casing and a right casing that match each other, Both the inner surfaces of the left casing and the right casing have a plurality of strip-shaped protrusions, the end faces of which are arc-shaped, and match with the middle part of the motor, When the left casing and the right casing are combined together, the motor accommodating cavity is formed, and the strip-shaped protrusions on the inner surface of the left casing correspond to the inner surface of the right casing. The strip-shaped protrusions are combined to form multiple turns of the blocking protrusions. 3. The driving device for a nail gun according to claim 2, characterized in that: Wherein, when the motor is accommodated in the motor accommodating cavity, the vent hole for the motor is located between two adjacent circles of the blocking protrusions, There are multiple exhaust holes for the motor, which are distributed between the two blocking protrusions. 4. The driving device for a nail gun according to claim 1, characterized in that: Wherein, the energy storage drive mechanism also includes: a motor end cover fixedly connected to the upper end face of the motor; and a reducer, fixedly connected to the motor end cover, for increasing the torque of the motor, The speed reducer includes a speed reducer housing, a core set in the speed reducer housing, and an output shaft connected to the core, the output end of the motor is connected to the core of the speed reducer, The housing also has a reducer accommodating cavity, which communicates with the motor accommodating cavity, and the reducer is accommodated and fitted in the reducer accommodating cavity. 5. The driving device for a nail gun according to claim 4, characterized in that: Wherein, the outer contour of the cross-section of the main part of the reducer housing is square, the outer contour of the cross-section of the upper end is circular, and the diameter of the circle is larger than the side length of the square, The casing includes a left casing and a right casing that match each other, Both the inner surfaces of the left casing and the right casing have grid-shaped protrusions and block-shaped protrusions, and the upper end of the reducer connected between the grid-shaped protrusions and the block-shaped protrusions is formed. The width of the accommodating groove and the accommodating groove of the main body of the reducer is respectively matched with the upper end and the main part of the reducer casing, When the left casing and the right casing are combined together, the two accommodating grooves at the upper end of the reducer and the two accommodating grooves at the main body of the reducer are combined to form the accommodating chamber for the reducer. 6. The driving device for a nail gun according to claim 5, characterized in that: Wherein, a plurality of cooling holes of the reducer are opened at the bottom of the accommodating groove at the upper end of the reducer and at the bottom of the accommodating groove of the main body of the reducer. 7. The driving device for a nail gun according to claim 4, characterized in that: Wherein, the upper end surface of the motor also has two upper end connection holes, The reducer casing also has four reducer connection holes, which are respectively located at the four corners of the main part of the reducer casing, One end of the reducer for connecting the motor has a circular groove, The energy storage drive mechanism also includes a motor end cover for connecting the motor and the reducer, and the motor end cover includes: The main body of the motor end cover is disc-shaped; a protrusion for connection of the reducer, whose shape matches the circular groove, and is formed on one surface of the main body of the motor end cover; and the motor connection protruding portion is formed on the other surface of the main body portion of the motor end cover, The middle part of the end cover of the motor is provided with a second relief hole, which is used to make way for the output end of the motor, The main body of the motor end cover is provided with at least two counterbores and four motor end cover connecting holes, the positions of the two counterbores correspond to the two upper connecting holes, and the four motor end covers The positions of the connecting holes correspond to the four connecting holes of the reducer. 8. The driving device for a nail gun according to claim 7, characterized in that: Wherein, there are four air intake holes for heat dissipation, which are arranged on the circular upper end surface of the motor and are evenly distributed along the circumference, The two upper connection holes are respectively located between two adjacent heat dissipation air intake holes, The raised portion for connecting the motor is a cross-shaped protrusion, When the motor end cover is arranged on the upper end of the motor, and the two counterbores are aligned with the two upper connection holes, the four ends of the motor connecting bosses are respectively aligned with the four The air intake holes for heat dissipation are staggered. 9. The driving device for a nail gun according to claim 7, characterized in that: Wherein, the speed reducer also includes a one-way bearing connected to the output shaft and located outside the upper end of the speed reducer casing, for making the output shaft rotate in one direction, The shape of the one-way bearing is cylindrical, with a gap on one side, The energy storage drive mechanism also includes a reducer end cover connected to the upper end of the reducer for protecting the one-way bearing, which includes: The main part of the reducer end cover is cylindrical in shape, and has a bearing accommodation groove matching the one-way bearing on one side for accommodating the one-way bearing. The bottom of the bearing accommodation groove has a through first A relief hole is used to make relief for the output shaft; Four connecting protrusions extend outward from the side of the main body of the reducer end cover, and are evenly distributed along the circumference of the main body of the reducer end cover, each of the connecting protrusions has a The connection holes of the reducer end cover, the distribution of the four connection holes of the reducer end cover corresponds to the four connection holes of the reducer; and The limiting protrusion extends from the side wall of the bearing accommodating groove to the middle thereof, and is matched with the notch of the one-way bearing, and is used for fitting with the notch so that the one-way bearing is limit. 10. A nail gun, characterized in that it comprises: A driver for a nail gun for striking a nail to eject it; and a nail magazine assembly, connected to the driving device for the nail gun, for storing the nails and providing the nails for the driving device for the nail gun, Wherein, the driving device for a nail gun is the driving device for a nail gun according to any one of claims 1-9.

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