TW201738045A - Pneumatic wrench with energy saving control and display thereof to achieve effects of enabling an operator to tighten a fastener with accurate torque output and saving energy - Google Patents

Abstract

The present invention relates to a pneumatic wrench with energy saving control and display thereof. A handle is extended downward from a main body. A bottom casing, which includes a viewing window, is formed at a bottom end of the handle. A pneumatic cylinder is coupled inside the main body. A torque control unit is coupled to a rear end of the main body. An airflow control unit is arranged at a rear side of the handle capable of outputting airflow to the torque control unit. A module seat having a surface including a circuit board mounted thereto is fixed on an inside of the viewing window of the bottom casing. The circuit board is combined with a pressure sensor mounted in a closed slot. A detection tube is connected between the slot and the pneumatic cylinder. Through the detection of pressure of the pneumatic cylinder by means of the detection tube, a value of an output torque and whether a force reaches a predetermined magnitude can be displayed with a display and LED lights of the circuit board, so as to achieve effects of enabling an operator to tighten a fastener with accurate torque output and saving energy.

Description

Air impact wrench with energy saving control and its display

The invention relates to the construction of an air wrench, in particular to an air wrench with energy saving control and its display.

The conventional pneumatic wrench is driven by gas pressure to drive the internal cylinder group and the wrench connected to the front end of the cylinder block to rotate or retract or tighten the components such as bolts or nuts through the wrench. It is quite convenient, fast and labor-saving, and is widely used in woodworking or factory operations.

For the conventional pneumatic wrench with the torque control function, please refer to FIG. 7 to FIG. 9 , the conventional pneumatic wrench 70 is provided with a housing 71 , a pneumatic cylinder 72 , an intake valve seat 73 and a knob 74 . The housing 71 defines a cavity 711 in the interior of the body. The cavity 711 forms an opening at the rear end, and a grip 712 extends downwardly from the bottom of the body of the housing 71. The rear cover is coupled to a rear cover 713 which is a ring body and is located directly behind the chamber 711. The pneumatic cylinder 72 is embedded in the interior of the housing 711 of the housing 71 and is provided with a front and a reverse. In the air passage, the intake valve seat 73 is disposed at a rear end of the pneumatic cylinder 72 and located inside the rear cover 713. The intake valve seat 73 is provided with a forward rotation inlet passage 731 and a reverse intake passage 732. The forward intake passage 731 is in communication with the forward air passage of the pneumatic cylinder 72, and the reverse intake passage 732 is in communication with the reverse air passage of the pneumatic cylinder 72.

The knob 74 is rotatably embedded between the intake valve seat 73 and the rear cover 713. The knob 74 is provided with a main air hole 741 in a spaced arrangement on the front side surface and the two holes are smaller than the main air hole. The flow regulating hole 742 of the 741, and the two flow regulating holes 742 are one large and one small holes, and the main air hole 741 is selectively connected to the forward air inlet passage 731 of the intake valve seat 73 by the rotation of the knob 74. Or the reverse air inlet passage 732 is in communication, and each of the flow regulating holes 742 located beside the main air hole 741 can be rotated and moved to the position where the main air hole 741 rotates out of the position with the forward rotation air inlet passage 731. At a position in communication with the forward rotation intake passage 731 of the intake valve seat 73, when the flow rate adjustment holes 742 having different sizes are in communication with the forward rotation intake passage 731, different pneumatic driving forces can be generated for the pneumatic cylinder 72.

In the foregoing operation mode, the conventional pneumatic wrench 70 can rotate the position of the knob 74 to cause the rotor in the pneumatic cylinder 72 to perform positive and negative rotation operations, and can respectively transmit two flow adjustment holes of different sizes of the knob 74. The manner in which the 742 is in communication with the forward intake passage 731 of the intake valve seat 73 increases the effect of the two different output torques of the conventional air wrench 70, together with the maximum output torque of the main air hole 741 and the forward air intake passage 731. The effect is a form with three different output torque effects of different sizes.

The above-mentioned conventional pneumatic wrench 70 can change the torque of the fixing member such as the fastening nut or the bolt or the action of loosening the fixing member by rotating the knob 74, but it is necessary to accurately lock the fixing member with the set torque. Since the torque of the conventional pneumatic wrench 70 is locked only by the experience of the operator, or after the fixing of the fixing member by the conventional pneumatic wrench 70, the lock is confirmed by the torque wrench to lock or loosen the fixing member. The torque of the fixed part can accurately reach the required torque value, thus causing the problem of inconvenient operation, easy to waste time, inefficient and waste power.

In view of the fact that the conventional adjustable pneumatic wrench can not accurately lock the fixing member with a specific torque, thereby causing inconvenience in operation and inefficiency and waste of power supply; for this reason, the present invention has a detection on the pneumatic wrench and The structure showing the torque can achieve the effect of locking the fixing member with the preset torque and saving energy.

In order to achieve the above object, the present invention provides an air-powered wrench with energy-saving control and display thereof, comprising: a casing provided with a body, a cavity formed inside the body, and a rear cover coupled to the rear end of the body a handle is formed downwardly on the bottom side of the rear half of the body, and a front receiving groove is formed in the upper and lower directions on the front side of the handle, and a base is formed downwardly at the bottom end of the handle to form a base. a window, a window hole is formed on the surface of the base shell; a wrench cylinder group is embedded with a pneumatic cylinder in the chamber, a cylinder housing is arranged around the pneumatic cylinder, and a front end of the pneumatic cylinder is connected to a front and a front a wrench rod at the front end of the body; a torque control unit, each of which is provided with an intake valve seat and a knob at a front and a rear position between the cylinder housing and the rear cover; an air flow control unit, along the upper and lower directions Combined with the rear side of the grip, the airflow can be output to the torque control unit, and a first-stage stabilizer is disposed at the bottom end of the grip, and the base end of the flow stabilizer protrudes downwardly and protrudes downwardly from the base shell. Pneumatic source interface; and a twist a display module, a module base is fixed on the inner side of the window hole of the base shell, and a circuit board mounting portion is formed on the surface of the module base, and a pressure sensor receptacle is formed in the circuit board mounting portion at the pressure A detecting long hole is bored inwardly of the inner surface of the sensing device slot, and a lower joint communicating with the detecting long hole is screwed into a position of the base of the detecting module at a position of the detecting long hole, and the cylinder casing is screwed Wearing a connector, connecting a detecting tube passing through the front receiving slot between the upper and lower connectors; and a circuit board is mounted on the circuit board mounting portion, the circuit board enclosing the pressure sensing device slot, The circuit board is combined with a pressure sensor and a microcomputer processor, wherein the pressure sensor is housed in the pressure sensor housing, and a torque data display, a plurality of torsion LED bulbs and a button are combined on the surface of the circuit board. a switch through which the torque data display and each of the torque LED bulbs can be viewed, or a button switch can be controlled, and a battery electrically connected to the circuit board is disposed at the base of the module; and the torque display module is operated by the switch Air flow control means and with the torque control unit, according to an appropriate output torque, so as to avoid excessive waste of power, energy saving effect by up.

Further, the base case of the present invention is formed by extending a peripheral edge of the bottom end of the grip toward the periphery and downwardly. The base case is a cover body and extends forwardly to form an extension portion. The window hole is rectangular and is opened in the In the middle of the top surface of the extending portion, a locking column is disposed downwardly at a position of the bottom surface of the extending portion at a corner of the window hole, and a locking screw hole is disposed upwardly on a bottom surface of each locking column, and A bottom plate is coupled between the bottom edge of the base shell by a screw, and a bottom of the bottom plate is disposed at a position directly below the gripper. The air pressure source interface is pierced downward by the air pressure source interface. The module base is a flat plate body and is disposed under the window hole, and four locking holes are arranged at four corners around the base of the module to match the locking holes. Each of the through holes is provided with a locking screw, and each of the locking screws passes through the locking holes and is screwed into the locking screw holes of each locking column, and the module base is fixed under the window hole.

Further, the present invention protrudes from the middle of the rear of the module base with a convex portion, the convex portion is directly below the bottom end of the front receiving groove, and the detecting long hole is perceived by the pressure The bottom surface of the cavity is disposed downwardly and rearwardly toward the projection portion, and the lower joint is screwed to the top of the projection portion.

Further, the circuit board of the present invention has a voltage detecting circuit, the microcomputer processor is disposed in the middle of the bottom of the circuit board, the torque data display is coupled in the middle of the top surface of the circuit board, and the torsion LED bulb is provided with three And arranged in the left and right spaced arrangement on the front side of the top surface of the circuit board, and in front of the top side of the circuit board at a position beside the torsion LED bulb combined with an abnormal LED bulb, the abnormal LED bulb and three abnormal LEDs The bulbs are arranged in a straight row.

Further, the color of the three torsion LED bulbs of the present invention is yellow, green and red from left to right, and the button switch is combined on the top surface of the circuit board to locate the torque data display and each of the torque LED bulbs. The location between.

Further, the present invention covers a top cover on the circuit board mounting portion of the module base, the top of the top cover is embedded in the window hole, and the top cover is covered around the circuit board. The top cover is disposed at a position above the torque data display, and a light-transmissive window is disposed. a button switch hole is disposed at a position corresponding to the button switch of the top cover, and the button switch passes the button switch hole upwards, and The top cover forms a light transmitting portion corresponding to each torque display LED bulb and the abnormal display LED bulb.

Further, the present invention opens a rectangular battery compartment opening at a position below the window hole of the bottom plate, and a locking hole groove is outwardly recessed in the middle of the left and right edges of the battery compartment opening; A positioning perforation is respectively disposed on the left and right sides of the base, and each positioning perforation is located directly above each of the locking hole grooves, and a polygonal nut-shaped groove is formed on the top of each positioning perforation, and is embedded in each of the nut cavities a battery cap is disposed; a battery compartment is protruded downwardly from the bottom of the module base, a bottom edge of the battery compartment abuts against an inner edge of the battery compartment opening, and the battery compartment is located between the two positioning perforations; The battery is installed in the battery compartment, and a battery compartment cover is disposed on the bottom cover of the battery compartment, and two lugs are arranged on the left and right sides of the battery compartment cover toward the two positioning perforations. The lug is provided with a disassembling perforation, and a dismounting screw is arranged with each of the disassembling perforations, and each of the dismounting screws passes upwardly through each of the disassembling perforations, the positioning perforations are fixed, and the nut is fixed by screwing.

Preferably, in the present invention, a positioning post is extended downward at a position corresponding to the middle of the top surface of the extending portion corresponding to the left and right sides of the window hole, and the bottom end of each positioning post extends downward to the respective nut. The top of the slot.

When the invention is used, the air pressure source interface is connected to the air pressure source. At this time, the torque function of the fixing member such as the predetermined locking screw can be set by the button switch and the display function of the torque data display. When used, the operator holds the hand by hand. The grip and the wrench rod are coupled to the sleeve to fit the fixing member, and then the air flow control unit is activated to cause the airflow to flow through the torque control unit into the pneumatic cylinder to drive the wrench lever. During the process, the operator can change the input pneumatic cylinder by turning the knob. The size of the airflow, thereby changing the torque that can be tightened to the fixture.

When the present invention is used to tighten the fixing member with the wrench rod, the pneumatic cylinder encounters resistance and changes the pressure inside the cylinder housing. Through the communication of the detecting tube, the pressure sensor can detect the internal pressure of the cylinder housing and provide a microcomputer processor. The pressure data, at this time the microcomputer processor will convert the pressure into the corresponding torque value, and output the value to the torque data display for the user's reference. The microcomputer processor also compares the instantaneous torque value with the set value. When the torque is less than the set value and equals the set value, the different torque display LED bulbs are illuminated, and the operator can continue to operate the wrench lever or Stop the rotation of the wrench lever to achieve the torque of the set value to lock the fixing member.

The present invention relates to a pneumatic wrench A with energy-saving control and its display. The preferred embodiment shown in FIGS. 1 to 6 includes: a casing 10, as shown in FIG. 1 and FIG. The body 11 is a tubular outer casing extending in the front and rear directions. The diameter of the front end of the body 11 is narrowed and a through hole 111 is formed in the middle, and a chamber 112 is formed inside the body 11 and formed at the rear end of the body 11. a rear opening 113 communicating with the chamber 112, a grip 12 extending downwardly from the rear half of the bottom side of the body 11; a front receiving portion extending in the direction of the upper and lower sides of the front side and the rear side of the grip 12 The front accommodating groove 121 and the rear accommodating groove 122 respectively form an opening at the bottom end of the grip 12, and form a left and right bifurcation double at the top of the front accommodating groove 121. The fork portion 123 has a top end on both sides of the double fork portion 123 penetrating into the bottom side of the chamber 112 of the body 11 to communicate with the chamber 112. The rear cover of the body 11 is coupled to a rear cover 13 which is attached to the rear cover 13 It is a ring body and is located directly behind the chamber 112 between the bottom side of the inner peripheral surface of the rear cover 13 and the top end of the rear accommodating groove 122. An air flow inlet hole 131 is formed, and a button groove 124 is recessed in the top of the front surface of the handle 12, and is further disposed in the front and rear directions between the rear end of the button groove 124 and the top of the rear receiving groove 122. A push rod perforation 125 is formed; as shown in FIG. 1 , FIG. 4 and FIG. 5 , a peripheral shell 14 is further formed on the periphery of the bottom end of the grip 12 and extends downward, and the base shell 14 is a cover body and extends forward. An extending portion 141 defines a rectangular window hole 142 in the middle of the top surface of the extending portion 141. A locking column 143 is disposed downwardly at a position of the bottom surface of the extending portion 141 at a corner of the window hole 142. The column 143 is a column extending in the upper and lower directions. A locking screw hole 1431 is formed in the bottom surface of each of the locking posts 143, and the top bottom surface of the extending portion 141 corresponds to the left and right sides of the window hole 142. A positioning post 144 is defined in each of the adjacent positions, and each positioning post 144 is a column extending in the upper and lower directions; a bottom plate 15 is embedded between the bottom edges of the base shell 14 and is threaded upward by a plurality of screws. Passing through the bottom plate 15, the bottom plate 15 is screwed to the bottom end of the base shell 14, and the bottom plate 15 is located below the window hole 142. A rectangular battery compartment opening 151 is defined. As shown in FIG. 2, a locking hole 152 is recessed outwardly in the middle of the left and right edges of the battery compartment opening 151. The two locking apertures 152 are located directly below the two positioning posts 144. An air pressure source interface through hole 153 is bored directly under the rear receiving groove 122 of the bottom plate 15.

A wrench cylinder 20, as shown in FIG. 2 and FIG. 5, is provided with a pneumatic cylinder 21, which is provided with a cylindrical cylinder casing 211, which is embedded in the chamber 112 of the body 11 through the cylinder casing 211. The front end of the pneumatic cylinder 21 is a power output end, and the rear end of the cylinder housing 211 of the pneumatic cylinder 21 is an open end, and a cylinder rotor 212 is disposed inside the cylinder housing 211, and the through hole 111 at the front end of the body 11 is rotatable. A wrench rod 22 is disposed, and the rear end of the wrench rod 22 is connected to the front end of the pneumatic cylinder 21.

a torque control unit 30, an intake valve seat 31 is fixed at the rear end of the cylinder housing 211 of the pneumatic cylinder 21, and a knob 32 is rotatably disposed between the intake valve seat 31 and the rear cover 13 A plurality of switchable flow passages are formed between the intake valve seat 31 and the knob 32 to communicate with the airflow inlet hole 131.

An airflow control unit 40 is provided with a first-stage stabilizer 41 embedded between the bottom end of the rear accommodating groove 122 in the grip 12 and the air pressure source interface through hole 153 of the bottom plate 15, and the flow end is convex downward toward the bottom end of the stabilizer 41. An air pressure source interface 411 is extended, and the air pressure source interface 411 passes downwardly through the air pressure source interface through hole 153, and a gas valve 42 is fixedly disposed at the top of the rear receiving groove 122; and the air valve 42 is connected with the flow direction stabilizer 41. An air tube 43 protrudes upward from a top of the air valve 42 with a switch lever 421 located directly behind the push rod hole 125; a push button 44 is embedded in the button groove 124, at the push button 44 A push rod 441 is extended rearwardly from the rear end, and the push rod 441 is passed rearward through the push rod through hole 125 and the rear end is nested and coupled to the top of the switch lever 421.

A torque display module 50, as shown in FIG. 2, FIG. 4 and FIG. 6, is provided with a module base 51 on the extending portion 141 of the base shell 14. The module base 51 is a flat plate body and is disposed in the window hole. A bump portion 511 is protruded in the middle of the rear of the module base 51. The bump portion 511 is located directly below the bottom end of the front receiving groove 121, and forms a middle portion of the top surface of the module base 51. The circuit board mounting portion 512 is a rectangular recess. A pressure sensor receptacle 5121 is formed in the middle of the rear side of the circuit board mounting portion 512. The bottom surface of the pressure sensor receptacle 5121 is downwardly facing. A detecting long hole 513 is bored in the protruding portion 511, and a lower joint 514 communicating with the rear end of the detecting long hole 513 is screwed on the top of the protruding portion 511; four corners around the module base 51 Corresponding to the four locking posts 143, four locking through holes 515 are formed, and each of the locking through holes 515 is respectively provided with a locking screw 516, and each locking screw 516 passes upward through each locking through hole 515 and is screwed to each lock. The locking screw hole 1431 of the solid column 143 fixes the module base 51 under the window hole 142, and the left and right sides of the module base 51 are located A positioning through hole 517 is respectively disposed at a position directly below the position post 144, and a nut fitting groove 5171 having a polygonal shape and a diameter larger than the rest of the lower portion is formed at the top of each positioning through hole 517, and is respectively disposed in each nut insertion groove 5171. A nut 518 is embedded, and the bottom end of each positioning post 144 of the base shell 14 extends downwardly to the top end of each nut slot 5171. The position of each nut 518 is fixed to prevent each nut 518 from being dropped by the nut recess 5171. As shown in FIG. 2 and FIG. 3, a battery compartment 519 in the form of a rectangular cover is protruded downward from the bottom of the module base 51. The bottom edge around the battery compartment 519 abuts against the battery compartment opening 151 of the bottom plate 15. The inner edge of the battery compartment 519 is located between the two positioning through holes 517; a circuit board 52 having a voltage detecting circuit is fixedly coupled to the circuit board mounting portion 512 of the module base 51, and the rear side cover of the circuit board 52 is closed. The top of the pressure sensor receptacle 5121 is coupled to a microcomputer processor 521 in the middle of the bottom of the circuit board 52, and a pressure sensor 522 is coupled to the bottom surface of the rear side of the circuit board 52. The pressure sensor 522 is housed in the pressure sensor. In the cavity 5121, a middle is combined in the middle of the top surface of the circuit board 52. The torque data display 523 further combines three torsion LED bulbs 524 and one abnormal LED bulb 525 in a left and right spaced arrangement on the front side of the top surface of the circuit board 52. The three torsion LED bulbs 524 emit light from left to right. The right side is yellow, green, and red, and a button switch 526 is coupled to the top surface of the circuit board 52 between the torque data display 523 and the torque LED bulb 524; and a cover is attached to the circuit board mounting portion 512 of the module base 51. The top cover 53 has a top surface of the top cover 53 embedded in the window hole 142 of the base shell 14, and the top cover 53 is covered around the circuit board 52. The top cover 53 is provided at a position above the torque data display 523. The light window 531 is provided with a button switch hole 532 at a position corresponding to the button switch 526 of the top cover 53. The button switch 526 passes the button switch hole 532 upwards, and the top cover 53 corresponds to three torque LED bulbs 524 and abnormal LEDs. The position of the bulb 525 forms a light transmitting portion 533; a battery 54 electrically connected to the circuit board 52 is disposed in the battery compartment 519, and the circuit board 52 is powered by the battery 54. The bottom cover of the battery compartment 519 is provided with a rectangular shape. Battery compartment 55, two lugs 551 are formed on the left and right sides of the battery cover 55 toward the two positioning through holes 517, and a dismounting hole 552 is formed in each of the lugs 551, and a dismounting screw 553 is disposed on each of the dismounting holes 552. The dismounting screw 553 passes upwardly through each of the dismounting perforations 552, the positioning through hole 517, and is screwed to each nut 518. As shown in FIG. 5 and FIG. 6, an upper joint 56 is threaded on the bottom side of the cylinder casing 211 of the pneumatic cylinder 21. A detecting tube 57 is disposed in the front receiving groove 121 of the grip 12, and the top end of the detecting tube 57 passes through the double fork portion 123 and is connected to the upper joint 56. The bottom end of the detecting tube 57 is The lower joint 514 is connected.

In addition to the foregoing preferred embodiments, the torque display LED bulb 524 is set to three, and the torque display LED bulb 524 can be set to two or more numbers to be more concise or more. The method of the present invention expresses the effect that the output torque value reaches the set value or not, and the torque data display 523 can select an LED display or a liquid crystal display, and the window hole 142 is not limited to the position of the top surface of the extending portion 141, and can also be modified. At the position of the side surface of the extending portion 141, the position of the torque display module 50 is fixedly disposed inside the window hole 142. The above structural changes are not limited herein.

When the present invention is used, as shown in FIGS. 1 and 2, the air pressure source interface 411 of the airflow control unit 40 is connected to the air pressure source, and then the button switch 526 is used in conjunction with the display function of the torque data display 523 to set a predetermined locking screw or the like. The torque value of the piece, when used, as shown in FIG. 5, the operator holds the grip 12 by hand, and connects the wrench rod 22 to the sleeve sleeve fixing member, and then pushes the push button 44 with the index finger to push the switch lever The air valve 42 is opened by the 421, and the airflow is caused to flow through the air pressure cylinder 21 through the torque control unit 30 to drive the wrench rod 22 to rotate. During the process, the operator can change the airflow of the input air cylinder 21 by rotating the knob 32, and adjust the rotation of the wrench rod 22. The strength and the torque that can be tightened.

When the wrench rod 22 is tightened to the fixing member, the pneumatic cylinder 21 encounters resistance and causes the pressure inside the cylinder housing 211 to change. As shown in FIG. 5 and FIG. 6, the pressure sensing device is transmitted through the detecting tube 57. The 522 can detect the internal pressure of the cylinder housing 211 and provide data of the pressure of the microcomputer processor 521, and the microcomputer processor 521 converts the pressure into a corresponding torque value.

As shown in FIG. 2, the value is output to the torque data display 523 for reference by the user. The microcomputer processor 521 compares the instantaneous torque value with the set value. When the instantaneous torque is insufficient, the yellow torque is displayed on the LED bulb 524. Lights up, when the instantaneous torque matches the set value, the green torque indicates that the LED bulb 524 is on. At this time, the operator removes the wrench rod 22 from the sleeve and the torque is set to a fixed value. The effect of the locking function is that when the torque of the locking fixing member is greater than the set torque, the red torque is displayed to indicate the LED bulb 524. At this time, the fixing member is loosened and then re-locked to lock the fixing member. The torque is in line with the needs.

When the power of the battery 54 is insufficient for the circuit board 52 to act, since the circuit board 52 is provided with a voltage detecting circuit, the abnormal LED bulb 525 is illuminated at this time, and when the operator sees the abnormal LED bulb 525, it is known that the present invention needs to be When the battery is replaced, when the battery is replaced, as shown in FIG. 2 and FIG. 3, the two removal screws 553 can be loosened to disassemble the battery cover 55. After the new battery 54 is replaced into the battery compartment 519, the battery can be replaced. The battery compartment cover 55 is re-capped of the battery compartment 519 to complete the operation of replacing the battery compartment cover 55, and the replacement of the battery 54 is very convenient.

In summary, the embodiments of the present invention relate to an air-powered wrench with energy-saving control and its display. After the wrench rod is tightened to the fixing member, the pneumatic cylinder will encounter resistance and the pressure inside the cylinder casing changes. The connection of the measuring tube enables the pressure sensor to detect the internal pressure of the cylinder casing and provide data of the pressure of the microcomputer processor. At this time, the microcomputer processor converts the pressure into a corresponding torque value and outputs the value to the torque data display. User reference. The microcomputer processor also compares the instantaneous torque value with the set value. When the torque is less than the set value and equals the set value, the different torque display LED bulbs are illuminated, and the operator can continue to operate the wrench lever or Stop the rotation of the wrench rod to lock the fixing member with a set value of torque; and operate the air flow control unit by its torque display module, and cooperate with the torque control unit to output appropriate torque to avoid excessive waste of power The energy-saving effect can be achieved; the structure of the structure has not been seen in the publications or public use, and it is in line with the requirements of the patent application, and the 钧局明鉴, the patent is granted as soon as possible, and the prayer is required; The specific embodiments of the patent application and the technical principles applied thereto shall be in this patent if the functional effects produced by the patent application are not changed beyond the spirit of the specification and the drawings. Within the scope of the application, Chen Ming is included.

[this invention]
A‧‧‧Air Impact Wrench
10‧‧‧ Shell
11‧‧‧Ontology
111‧‧‧Perforation
112‧‧ ‧ room
113‧‧‧After opening
12‧‧‧ grip
121‧‧‧ front slot
122‧‧‧ After receiving the slot
123‧‧‧Double fork
124‧‧‧ button groove
125‧‧‧Pusher piercing
13‧‧‧Back cover
131‧‧‧Airflow entry hole
14‧‧‧Base shell
141‧‧‧Extension
142‧‧‧Window Hole
143‧‧‧Locking column
1431‧‧‧Locking screw hole
144‧‧‧Positioning column
15‧‧‧floor
151‧‧‧ battery compartment opening
152‧‧‧Keyhole slot
153‧‧‧Pneumatic source interface perforation
20‧‧‧ cylinder group
21‧‧‧ pneumatic cylinder
211‧‧‧Cylinder housing
212‧‧‧Cylinder rotor
22‧‧‧Wrench rod
30‧‧‧Torque Control Unit
31‧‧‧Intake valve seat
32‧‧‧ knob
40‧‧‧Airflow control unit
41‧‧‧Flow stabilizer
411‧‧‧Pneumatic source interface
42‧‧‧ gas valve
421‧‧‧Switch lever
43‧‧‧ trachea
44‧‧‧ Press button
441‧‧‧Put
50‧‧‧Torque display module
51‧‧‧Module base
511‧‧‧Bumps
512‧‧‧Board Mounting Department
5121‧‧‧Pressure sensor tank
513‧‧‧Detecting long holes
514‧‧‧ lower joint
515‧‧‧Locking perforation
516‧‧‧Locking screws
517‧‧‧ Positioning perforation
5171‧‧‧Nuts
518‧‧‧ nuts
519‧‧‧ battery compartment
52‧‧‧ boards
521‧‧‧Microcomputer processor
522‧‧‧pressure sensor
523‧‧‧Torque data display
524‧‧‧Torque LED Bulbs
525‧‧‧Abnormal LED bulb
526‧‧‧Key switch
53‧‧‧Top cover
531‧‧‧Light transmissive window
532‧‧‧Key switch hole
533‧‧‧Transmission Department
54‧‧‧Battery
55‧‧‧Battery cover
551‧‧‧ lugs
552‧‧‧Removal of perforations
553‧‧‧Removal screws
56‧‧‧Upper joint
57‧‧‧Detection tube
[知知]
70‧‧‧French air impact wrench
71‧‧‧Shell
711‧‧ ‧ room
712‧‧‧ grip
713‧‧‧ rear cover
72‧‧‧ pneumatic cylinder
73‧‧‧Intake valve seat
731‧‧‧ Forward air intake
732‧‧‧Reverse intake channel
74‧‧‧ knob
741‧‧‧ main air hole
742‧‧‧Flow adjustment hole

Figure 1 is a perspective view of a preferred embodiment of the present invention. Figure 2 is an exploded view of a preferred embodiment of the present invention. 3 is an exploded view of a torque display module in accordance with a preferred embodiment of the present invention. Figure 4 is an enlarged exploded view of a preferred embodiment of the present invention. Figure 5 is a cross-sectional view of a preferred embodiment of the present invention. Figure 6 is an enlarged cross-sectional view showing a preferred embodiment of the present invention. Figure 7: is a perspective view of a conventional pneumatic wrench. Figure 8: is an exploded view of a conventional pneumatic wrench. Figure 9 is a cross-sectional view of a conventional pneumatic wrench.

121‧‧‧ front slot

51‧‧‧Module base

5121‧‧‧Pressure sensor tank

513‧‧‧Detecting long holes

514‧‧‧ lower joint

52‧‧‧ boards

521‧‧‧Microcomputer processor

522‧‧‧pressure sensor

526‧‧‧Key switch

54‧‧‧Battery

57‧‧‧Detection tube

Claims (10)

An air wrench with energy-saving control and display thereof comprises: a casing, a body, a cavity formed inside the body, and a rear cover at the rear end of the body, at the bottom of the rear half of the body A front cover is extended downwardly, and a front receiving groove is formed in the upper and lower directions of the front side of the handle, and a base shell is formed downwardly at the bottom end of the grip, and the base shell is opened on the surface of the base shell. a window hole; a wrench cylinder group in which a pneumatic cylinder and a wrench rod passing through the front end of the body are embedded; a torque control unit at a front and a rear position between the cylinder housing and the rear cover Each of which is provided with an intake valve seat and a knob; an air flow control unit is coupled to the rear side of the grip in the upper and lower directions to output airflow to the torque control unit; and a torque display module in the base housing A module base is fixed on the inner side of the window hole, and a circuit board mounting portion is formed on the surface of the module base, and a pressure sensor receptacle is formed in the circuit board mounting portion, facing the inner side of the pressure sensor receptacle Inside, a detection long hole is formed in the mold The bottom surface of the base is located at a position of the end of the detecting long hole, and a lower joint communicating with the detecting long hole is screwed into the upper joint of the cylinder housing, and a joint is passed between the upper and lower joints through the front receiving groove. Detecting tube; operating the airflow control unit by the above-mentioned torque display module, and with the torque control unit, according to the output of appropriate torque, to avoid excessive waste of power, to achieve energy saving effect. An air-pneumatic wrench with energy-saving control and its display according to the first aspect of the patent application, wherein a cylinder housing is disposed around the pneumatic cylinder, and a wrench rod that can rotate and forwardly exits the front end of the body is connected to the front end of the pneumatic cylinder. Further, at the bottom end of the grip, a first-stage stabilizer is disposed, and a flow source interface protruding from the bottom end of the flow stabilizer to the bottom of the base is protruded downward. An air wrench with energy-saving control and its display according to the scope of claim 2, wherein a circuit board is coupled to the circuit board mounting portion, the circuit board encloses the pressure sensor receptacle, and a pressure is applied to the circuit board a sensor and a microcomputer processor, wherein the pressure sensor is received in the pressure sensor receptacle, and a torque data display, a plurality of torque LED bulbs and a push button switch are coupled to the surface of the circuit board, through the window The hole can view the torque data display and each of the torque LED bulbs, or can control the button switch, and a battery electrically connected to the circuit board is disposed at the base of the module. An air impact wrench with energy-saving control and its display according to claim 3, wherein the base shell is formed by extending a peripheral edge of the bottom end of the grip toward the periphery and facing downward, the base shell being a cover body and facing forward Extending to form an extension portion, the window hole is rectangular and is disposed in the middle of the top surface of the extension portion, and a locking column is respectively extended downward at a position of the top bottom surface of the extension portion at four corners of the window hole. a locking screw hole is bored upwardly on the bottom surface of the locking post, and a bottom plate is connected between the bottom edge of the base shell by a screw, and a bottom plate is disposed at a position directly under the grip. The port is perforated, and the air pressure source interface is pierced downward by the air source interface; the module base is a flat plate body and is disposed below the window hole, and the four corners around the module base correspond to four Each of the locking cylinders is provided with four locking perforations, and each of the locking perforations is respectively provided with a locking screw, and each locking screw passes upward through each locking perforation and is screwed into the locking screw holes of each locking column. Fixing the module base below the window hole . An air impact wrench with energy-saving control and its display according to claim 3, wherein a bump portion is protruded rearward in the middle of the rear of the module base, and the bump portion is located at the bottom of the front receiving groove Directly below the end, the detecting slot is threaded downwardly from the bottom surface of the pressure sensor receptacle and rearwardly into the bump portion, and the lower joint is screwed to the top of the bump portion. An air wrench with energy-saving control and its display according to claim 3, wherein the circuit board has a voltage detecting circuit, the microcomputer processor is disposed in the middle of the bottom of the circuit board, and the torque data display is combined In the middle of the top surface of the circuit board, the torsion LED bulb is provided with three and arranged on the front side of the top surface of the circuit board in a left and right spaced arrangement, and is located beside the torsion LED bulb on the front side of the top of the circuit board. The position is combined with an abnormal LED bulb, and the abnormal LED bulb and the three abnormal LED bulbs are arranged in a straight row. According to the pneumatic wrench of the energy saving control and the display thereof according to claim 6, the color of the three torsion LED bulbs is yellow, green and red from left to right, and the button switch is combined The top surface of the circuit board is located between the torque data display and each of the torque LED bulbs. An air wrench with energy-saving control and its display according to claim 7 , wherein a cover is covered on a circuit board mounting portion of the module base, and a top of the top cover is embedded in the window hole And the top cover is disposed around the circuit board, and a light-permeable window is disposed at a position above the torque data display, and a button switch is disposed at a position corresponding to the button switch of the top cover The hole switch, the button switch passes out the button switch hole, and forms a light transmitting portion at a position corresponding to each torque display LED bulb and the abnormal display LED bulb. The air impact wrench with energy-saving control and its display according to any one of claims 2 to 8, wherein a rectangular battery compartment opening is opened at a position below the window hole of the bottom plate, and the battery is further a locking hole is recessed in the middle of the left and right edges of the opening; a positioning perforation is respectively disposed on the left and right sides of the module base, and each positioning hole is located directly above each locking slot, in each positioning The top of the perforation forms a polygonal nut-shaped slot, and a nut is embedded in each of the nut cavities; and a battery compartment is protruded downward from the bottom of the module base, and a bottom edge around the battery compartment Abutting against an inner edge of the opening of the battery compartment, and the battery compartment is located between the two positioning perforations; the battery is installed in the battery compartment, and a battery compartment cover is disposed at a bottom end of the battery compartment, Two lugs are arranged on the left and right sides of the battery compartment cover below the two positioning perforations, and a dismounting hole is formed in each lug, and a dismounting screw is arranged with each disassembling perforation, and each disassembling screw passes upwardly through each disassembling perforation, Position the perforations and screw them in each nut. An air-pneumatic wrench with energy-saving control and its display according to claim 9 of the invention, wherein a positioning post is extended downward at a position corresponding to the middle of the top surface of the extension portion corresponding to the left and right sides of the window hole The bottom end of each positioning post extends downward to the top end of each nut slot.