TWI233871B - Air valve of pneumatic motor of screwdriver and air path of the air valve - Google Patents

Abstract

An air valve of a pneumatic motor of a screwdriver and an air path of the air valve is disclosed. A spindle of the pneumatic motor is formed with a bi-directional rod groove. One end of the rod groove is communicated to an air inlet of the pneumatic motor and another end thereof is formed with a valve gate to be communicated to an air supply in the screwdriver so as to form an air path to supply air to drive the pneumatic motor. A piston rod for beating a screw nail is mounted in the rod groove. An air stop washer is formed on the piston rod for controlling opening and closing of the valve gate with the movement of the screw nail as the screw nail is beaten so as to control the opening and closing of the valve gate. Thus rotation of the pneumatic motor is controlled.

Description

1233871

V. Description of the Invention (1) [Technical Field] The present invention provides a pneumatic motor pneumatic circuit of a screw gun and its air-reading structure, and particularly relates to the air intake end of the pneumatic motor and the internal air supply source. A motor air circuit with a linear air supply distance, and the last name is J " I ,,,. A piston rod for rotating nails is used to construct a valve technology that forms a motor air circuit. [Previous technology] Pneumatic screw gun 'uses high-pressure air as power to drive the piston rod in a cylinder to generate linear kinetic energy, and drive another pneumatic motor in the cylinder to generate rotational kinetic energy, and then transfer the above kinetic energy to a nail-locking rod The screw in the work. In the workshop, the technology and application of the f-fitting with screw cylinders, cylinders, and air motors can be found in the more advanced Japanese patent publication No. Heihei = 11-30 0 640, which reveals that the air motor is installed in The upper part of the gun cylinder and piston rod assembly structure is separated from the piston rod, and a wall casing extending from the air inlet end of the air motor is provided in the wall shell on the end side of the body, and the air path is broken. Connected to a gas valve placed at the bottom of the cylinder wall, y works by the reciprocating linear displacement generated by the piston rod at the time, and controls the gas valve to open or close the air circuit of the air motor to drive the piston rod to generate linear plus rotational kinetic energy Lock pins work. The mandrel of the above-mentioned air motor is a solid mandrel, which is only used for transmitting $ kinetic energy, and the motor fluorine opening inside the side wall shell of the grab body is excessively tortuous. In terms of installation space, and in terms of smooth ventilation of the rotation of the high-pressure air driving motor, it is not appropriate. This discrepancy is also considered to be missing ’and at the same time was revealed in Japanese Patent Application No. 1 1-2 3 5 6 2 8

Page 51233871_ V. Description of the Invention (2) ------ JP-A No. 1 1-30 0 636, JP-A No. 1 1-30 0 638, and JP 2 0 0 0-6 0 4 0 In the patented technology such as No.2, Gu Er has not been completely solved. [Content]-, Public opinion. The purpose of the present invention is to provide a pneumatic screw road grabbing design, which is structured in the motor mandrel and communicates with the pneumatic source supply end of the pneumatic motor. It has a short and smooth straight line supply. Grab the centerline of the inner drive member, so it is cold and cool, and maintains excellent stability. When the hole is used as a nail grab, another object of the present invention is to provide an air valve structure of a pneumatic screw, and in particular, a motor air path accommodated in a motor is used to make a space between the motor air path and the motor air path. , Lever, will reduce the use of motor air valve assembly space. Evening grudge, in order to achieve: In addition to this, the present invention is also included in the grab, only the yoke to open the main air valve π with the above motor air circuit 路 When the upper valve of the main air valve is opened , Connectable intake air reaches the motor air passage. "The present invention also includes the inside of the inside of the motor, and the existing bearing gas of the Γ part of the motor air path is opened. The high-pressure air in the motor air path is borrowed." In the connected chaotic motor, the lice are smoothly guided to, and in order to further elaborate the present invention, here is a detailed explanation of the illustration below. The illustration of the cattle is poor and the implementation method is used. As shown, the system reveals the invention of the air fly screw grab outside $ 6, page 1233871

V. Description of the invention (3) Observation form, which mainly consists of a grabbing head 丨 丨 and a grip 丨 2 to form a grabbing body i, and a screw feeder 1 3 at the bottom end of the a body 1 can be screwed Guide the bow one by one to the ^ mouth, and at the same time grab the bottom of the body and set a trigger 丨 5 for the user to press the nail trigger 15 to drive the internal components of the gun to screw the screw on the work. As shown in FIG. 2, the transmission member of the pneumatic screw according to the present invention is disclosed, and includes: B 4 an air motor 2 having a mandrel 20 on the center axis and an air motor 2 Pivot between a bearing top 2 1 and a bearing base 2 2 ·: The moving motor 2 is provided with a plurality of radial blade grooves 23 for accommodating equal blades 24, and an eccentric air hood 25 The air-collecting belt ^ receiving high-pressure air is rotated by the driving mandrel 20. Each of the above-mentioned bearing top seat 21 and the bearing base 22 is provided with an air inlet hole 29 which can drive the motor to communicate with the blade groove 23; and a cushion ring 55 is set up on the top of the bearing top seat 21, The cushion ring 55 is provided with at least a groove portion 56 extending from the inner hole 57 to the outside 3 and communicating with the above-mentioned air inlet hole 29, thereby constituting the air intake of the motor ^ The above-mentioned motor mandrel 20 is provided with a bidirectionally penetrating rod groove 26 One end is connected to the above-mentioned intake-end passage of the air motor 2, and the other end is formed into a neck-shaped valve port 28 with a smaller inner diameter, and communicates with the air-supply-side supply-end passage in the gun (as described later by Taniya) 'Form a motor air path configuration that can guide the high-pressure air to drive the air motor 2 to rotate. A planetary gear set 3 has a driving gear 31 that receives the above-mentioned motor spindle 20 transmission, and drives a plurality of driven gears 33 to rotate around the driving gear 3m and the internal gear 32. (V)

V. Description of the invention (4) Out of the market, ί: the start of the production wheel Γ drives a frame of power transmission placed on the bearing seat 5 directly = there is a -polygonal hole 41 on the axis of the second axis, which can have both phase and π # & The piston with the polygonal rod wall 6 rotates, or is embedded = internally combined with the driving piston 2 "moving sleeve 4 with the same sleeve = a plurality of disk holes 40 can be added in addition to the above-mentioned rod groove 26: == = Set up = seat ·, with the upper cylinder 7, cylinder 7々ka, and the bottom of the bearing seat 5 is provided with a-main air valve 8 formed with a spacer 70; bearing seat 5 and the cylinder 7 port 82 And the lower entrance 83: U = 0, second gas door 8. The two ends have the piston rod fi & After receiving the transmission, the self-edging rod wall is fitted in the rod groove 26 in the power output plate 4 and is retracted in the motor mandrel 20 due to t2_4 through the neck-shaped opening 28 so that it can be used as a stable. Inside the cylinder 7 and produced by the piston, two = has a piston, the valve 60 is sleeved on the top of the gas rod 6 ^ two = a nail lock rod 61 is buckled; at the same time, the piston, by the piston rod 6 top two; & In the groove 62 is provided-a gas stop ring 63 gas path ;: the shape of the opening or two rods' and can control the above-mentioned motor-end path, which refers to the supply of the air source connected to the valve port 28 of the rod groove 26 Seat hole 50 m3, output plate 4 i, plate hole 40, bearing seat 5 are controlled to be opened by valve port 82 above main gas valve 80 or 1233871 V. Description of the invention (5) Closed top air chamber 91 and other intake channels Composition: When the user has not pressed the trigger 15 (as shown in Figure 3), the valve port 82 above the main air valve = 80 is closed, and the high-pressure air 90 in the top air chamber 91 cannot enter the valve. Port 28, so the air motor 2 does not rotate; at this moment, the lower valve port 83 of the main gas valve 80 is in an open state, and the air source at the top of the piston valve 60 is in an external pressure relief state, so that The piston rod 6 returns to the top position and retracts into the rod groove 2 6. ## When the user presses the trigger 15 (as shown in Fig. 4) 'Board trigger 16' Open the trigger air passage 17 to the outside exhaust path. The high-pressure air 90 in the middle air chamber 92 is externally pressurized. At this moment, the pressure of the high-pressure air continuously supplied in the top air chamber 91 of the main air valve 8 'is greater than the spring pressure of the pressure spring 81 in the middle air chamber 92. The port 82 is open, and the lower valve port 83 is closed. The high-pressure air 90 and the upper valve port 82 enter the cylinder 7 to push the piston valve 60. The piston rod 6 2 generates linear kinetic energy, which drives the nail lock rod 6 丨 to descend rapidly. Displacement (as shown in Figure 5). Π = ΐ 气 90 also enters the plate hole 40 and seat hole 50 which communicate with the mouth 28 # Μ'ί, should be in the 4th passage, and it carries the motor air path from the valve port 28 Inside the rod groove M, and then lead to the motor intake air passages such as the inner hole 57, the groove portion 56, and the air intake hole 29 to drive the air motor 2's shaft 20 to generate rotational kinetic energy; and # 动, which in turn drives the rapid downward displacement./ 土 柃 6 —and rotate, so that the locking nail rod 61 can perform the bottom position of the screw rotation operation (as shown in Figure 6). 'That is accumulated through the guide hole of the cylinder wall near the bottom, at the moment the screw has been screwed explant (i.e., when the piston rod 6 is lowered the valve 60 is displaced to the top of the high pressure air cylinder 9 square 71, and guided to a return plenum 95

1233871 V. Description of the invention (6) '1 _ ^ Locking) is completed, the gas washer 63 on the piston rod 6 has been lowered to the state of closing the valve port 28, and the above-mentioned air source supply side passage and motor inlet are blocked. The air end passageway stops the rotation of the air motor 2.

Then when the user releases the trigger 15 and releases the trigger valve 16 (as shown in FIG. 7), the trigger valve 16 closes the exhaust passage of the trigger airway 17 to the outside, and f allows the high-pressure air 90 in the grip 12 to pass Trigger airway 17 and enter the middle gas to 92 internal pressure, plus the return force of the pressure spring 81, together push the main gas valve 80 on the main gas ^ 8 to return to close the upper valve port 82 and block the access The air source between the valve port 28 and the air stop ring 63 is opened simultaneously with the lower valve port 83 to release the gas in the cylinder 7 and introduce the high-pressure air 90 'originally stored in the return air chamber 95 into the guide hole 72 In the cylinder 7 at the bottom of the piston valve 60, the piston rod 6 is pushed up and retracted in the rod groove 26 and reset (see the state in FIG. 3). According to the above, the present invention can be specifically implemented, and can improve the smoothness of the motor airway ventilation and the stability of the nail gun, and has the benefits of reducing the space of the motor valve assembly and the volume of the gun head; In addition, the features of the invention also include the use of other known airway configuration methods to construct the configuration of the surrounding air paths such as the air supply end and the air inlet end of the motor that are connected to the two ends of the rod groove of the motor air path. Therefore, all the characteristic technologies listed in the scope of Shen Jingli described later in this case should be strictly protected by the patent law: a?

Feel the mattress. ,

1233871

Figure 1: A perspective view of a screw grab according to the present invention. Figure = | A cross-sectional view of a head grab according to the present invention. θ reveals the state diagram before the trigger is pressed in the present invention. Fig. 4 is a cross-sectional view of the initial state when the trigger is pressed according to the present invention. Figure 5 · Cross-sectional view of the piston rod in the forward state after the trigger is pressed according to the present invention. Figure 6 · Cross-sectional view of the piston rod in the forward state after the trigger is pressed according to the present invention. Figure 7: A cross-sectional view showing the return state of the piston rod after the trigger is released according to the present invention

Drawing number Gun body 1 Nail delivery Is 1 3 Trigger airway 17 Glaze Socket 2 1 Blade 24 Valve port 28 Drive gear 31 Output disk 4 Bushing 4 2 Gasket 5 5 Piston rod 6 Ring groove 62 Spacer 7 0 Tip 11 Trigger 15 Air motor 2 Bearing base 2 2 Eccentric air hood 2 5 Air inlet 29 Internal gear 3 2 Disk hole 4 0 Bearing seat 5 Slot 5 6 Piston valve 6 0 Gasket 63 Guide holes 71, 72 Grip 1 2 Trigger valve 1 6 Mandrel 2 0 Blade groove 23 Rod groove 26 Planetary gear set 3 Drive gear 33 Polygon hole 41 Seat hole 5 0 Inner hole 57 Locking lever 6 1 Air 7 Main air valve 8

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Claims (1)

^ 1 · A pneumatic motor pneumatic circuit for a screw gun and a bearing top of which the spindle of the air motor is pivoted in the gun, and the bearing top seat and the bearing base each have an air drive hole, which is characterized by: A two-way penetrating system is connected in the mandrel to the intake end of the air motor, and the rod groove is connected to the internal air supply end to form a rotatable motor air path configuration. The installed > tongue plug rod is provided with a gas stop washer on the rod body as a "operational port capable of lifting and displacing the piston rod when the screw is fired" to control the timing of the rotation of the air motor. 2 · The screw circuit and the air valve structure according to item 1 of the scope of the patent application, wherein a cushion ring on the top of the top seat of the air inlet end of the air motor is provided with at least one groove portion connected by the rod groove and the Motor air intake, borrowed passage. 9 3 · The screw path and the air valve structure described in item 1 of the scope of the patent application, wherein the valve port is neck-shaped, with 4 · The screw path and the air valve structure described in item 1 of the scope of the patent application, wherein the The air supply end is the upper valve port of j. '5 · The screw circuit and the valve structure described in item 4 of the scope of the patent application, wherein at least one output disc is pivoted between the 丄 of the main gas valve and another bearing seat ISBI valve structure, the main seat and bearing One end of the rod-feeding slot that the motor moves between the bases is formed with a valve port to drive the air motor. A rotary nailer uses a motor air valve to open or close the air motor. The air motor has an extension provided in the inner bore of the bearing. The air motor that is opened to form the intake end of the motor has a smaller inner diameter. The main air valve in the body of the air motor is the main air valve in the body of the air motor. The air port of the air motor and the groove of the rod groove are on the 0. Page 13 2005. 02. 24. 013 93116764 March & The scope of the patent No. 5 and its valve structure, in which the passage of the shaft source supply end is connected to the 7. The scope of patent application No. 5 and its valve structure, in which the passage of the source supply side is connected to the upper 8. For example, the 5th circuit of the patent application scope and the air valve structure thereof, in which the star transmission gear set transmits power in the center and activates. 9. If the patent application scope No. 8 and its valve structure, where the transmission rod has a polygonal rod wall, so that the output disk 10. If the patent application scope No. 8 and its valve structure, where the transmission has a polygonal outer wall And the inner wall of the filling transmission piston rod rotates. The screw socket is provided with a valve port and a rod groove. The screw outlet plate is provided with a valve port and a rod groove. The screw outlet plate and the pneumatic output disk are rotated. The screw outlet of the transmission item is provided with a bushing at the center, and the valve opening of the pneumatic multiple seat holes of the nail gun is used. Nailer pneumatic multiple disc holes, valve ports. The pneumatic motor of the nail gun drives the pneumatic polygonal hole of the nail gun, the piston rod rotates the pneumatic polygonal hole of the nail gun, and the polygonal motor of the bushing is used as the air motor. Air and piston 〇Motor air with embedded inner wall Page 14 2005.02. 24.014