WO2022166318A1 - Dispositif de commutation et de verrouillage des fonctions de rotation vers l'avant et vers l'arrière d'une clé à chocs à l'aide d'une clé - Google Patents

Dispositif de commutation et de verrouillage des fonctions de rotation vers l'avant et vers l'arrière d'une clé à chocs à l'aide d'une clé Download PDF

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Publication number
WO2022166318A1
WO2022166318A1 PCT/CN2021/132265 CN2021132265W WO2022166318A1 WO 2022166318 A1 WO2022166318 A1 WO 2022166318A1 CN 2021132265 W CN2021132265 W CN 2021132265W WO 2022166318 A1 WO2022166318 A1 WO 2022166318A1
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WIPO (PCT)
Prior art keywords
groove
air
hole
guide wheel
guide
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Ceased
Application number
PCT/CN2021/132265
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English (en)
Chinese (zh)
Inventor
王祥录
陈吉雄
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Zhangzhou Nanfang Machinery Co Ltd
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Zhangzhou Nanfang Machinery Co Ltd
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Publication date
Application filed by Zhangzhou Nanfang Machinery Co Ltd filed Critical Zhangzhou Nanfang Machinery Co Ltd
Publication of WO2022166318A1 publication Critical patent/WO2022166318A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose

Definitions

  • the invention relates to the technical field of pneumatic wrenches, in particular to a device which adopts a button to switch and lock the forward and reverse functions of the pneumatic wrench.
  • the working principle of the pneumatic wrench is that the compressed air enters the cylinder through the air-closing mechanism, the speed regulating mechanism, and the forward and reverse mechanism, and pushes the blades to drive the rotor to rotate, so that the striking mechanism generates an instantaneous high-energy alternating impact load. Because of its large torque output, it is safe to use. It has good performance and is widely used in screw assembly and disassembly occasions such as assembly production lines and maintenance places. Screw assembly and disassembly are realized by switching the forward and reverse functions of the pneumatic wrench, so the switching operations of the forward and reverse functions of the pneumatic wrench are more frequent.
  • the forward and reverse switching of the traditional pneumatic wrench is generally divided into three categories: the first type is directly realized by the axial rotation of the regulating valve. When the pneumatic wrench is switched between the forward and reverse directions, the operator must operate it with both hands, that is, the operator holds the hand with one hand. Pneumatic wrench, rotate the knob of the regulating valve with the fingers of the other hand to realize the forward and reverse switching of the pneumatic wrench.
  • the second type is directly realized by the axial linear movement of the regulating valve. There is always one end protruding from the pneumatic wrench housing at both ends of the pneumatic wrench regulating valve. The operator presses the protruding end to make the axial movement of the pneumatic wrench regulating valve to achieve positive and negative.
  • the forward and reverse switching function of this type of pneumatic wrench is a two-button type. These two buttons are located at the front and rear ends of the pneumatic wrench or on the left and right sides. After careful analysis, due to the structural limitations of such traditional pneumatic wrenches, adjusting The two ends of the valve are a certain distance from the hand grip, and the forward and reverse switching of the pneumatic wrench brings inconvenience to the operator.
  • the third type is achieved by indirectly pushing the regulating valve to rotate axially by two side-by-side buttons at the rear end of the pneumatic wrench.
  • the forward and reverse switching device of this type of pneumatic wrench uses two buttons, which is slightly redundant, and misoperation often occurs. To sum up, the traditional pneumatic wrench brings a lot of inconvenience to the operator when switching functions, especially when switching between forward and reverse.
  • the purpose of the present invention is to provide a device for switching and locking the forward and reverse functions of a pneumatic wrench by using a button, so as to solve the problems raised in the above-mentioned background art.
  • a device for switching and locking the forward and reverse states of a pneumatic wrench with a button comprises a casing, a cylinder, a screw A, a valve seat sealing ring, a gas valve seat, and a sealing ring A.
  • the housing is provided with a motor chamber, an exhaust chamber , intake chamber, the mouth of the intake chamber is provided with a sealing ring groove A, the lower part of the housing motor chamber is provided with a screw hole B, a baffle mounting sink, a sealing ring slot B, a through hole, a spring positioning sink, and a button installation
  • the cylinder is placed in the motor group, and the cylinder is provided with air groove A, air groove B, screw hole A, eccentric inner hole, exhaust hole, and arc grooves on both ends;
  • the air valve seat is provided with a seal Ring groove C, air groove C, air groove D, air inlet hole, exhaust groove, air valve hole, screw through hole A, solid pin mounting hole, the air valve seat sealing ring is placed in the sealing ring groove C, the air valve seat Connect the cylinder with the screw A, so that the air groove C is always connected to
  • the front stop guide groove dead point, the shaft center through hole A, the small end is provided with a clamping groove A;
  • the outer circle of the guide wheel B is provided with a guide rotation groove with a certain inclination angle, the guide groove stop point, and the shaft center through hole A;
  • Hole B, the small end is provided with a slot B;
  • the guide wheel B cooperates with the slot A of the guide wheel A through the slot B, so that the guide wheel A and the guide wheel B form a guide wheel group, and the rear stop guide slot, front stop guide slot and The guide groove constitutes a completed working guide groove.
  • the guide wheel group is installed on the valve bolt guide wheel shaft and can be rotated;
  • the valve bolt retaining ring groove is equipped with an E-type retaining ring, which is used to limit the axial direction of the guide wheel group and the valve bolt.
  • the solid pin is inserted into the installation hole of the solid pin of the valve seat and placed in the working guide groove of the guide wheel group, and is restrained by the solid pin. It can perform specific axial movement and rotation movement; the sealing ring B and the baffle are placed in the casing sealing ring groove B and the baffle installation sink in turn, and the baffle is locked on the casing by screws B; the valve bolt guides
  • the axle passes through the inner hole of the sealing ring B and the through hole of the casing into the square hole for installing the button of the casing.
  • the sealing ring B plays the role of isolating the compressed air in the motor chamber of the casing from leaking to the outside of the casing;
  • the button is provided with a spring
  • the positioning shaft, square hole and screw hole are countersunk.
  • the square hole is matched with the square head of the valve bolt and is locked by screw C, so that the valve bolt and the button are connected as a whole. It can only move axially but cannot rotate axially;
  • the reset spring is placed between the housing spring positioning sink and the button spring positioning shaft, and plays the role of locking the positive and negative working state of the valve bolt and restoring the state; when the external force presses When pressing the button, the button pushes the valve bolt, E-type retaining ring, and guide wheel set to overcome the axial direction of the return spring.
  • the valve bolt air groove E connects the valve seat air groove C and the housing exhaust chamber, so that the pneumatic wrench is switched to the reverse working state; when the button is pressed again by external force, the button pushes the valve bolt, E-type retaining ring, and guide wheel group.
  • the guide wheel group Overcoming the axial movement of the return spring, when the guide groove of the guide wheel B in the guide wheel group contacts the solid pin, the guide wheel group automatically rotates to avoid the solid pin, and finally the stop point of the guide groove of the guide wheel B is locked at the solid pin.
  • the solid pin releases the external force of the button. Under the action of the reset spring, the valve bolt, guide wheel group, E-type retaining ring, and button start to perform axial reset motion.
  • the guide wheel group When the guide groove of the guide wheel A in the guide wheel group stops When contacting the solid pin, the guide wheel group automatically rotates to avoid the solid pin, and finally the valve bolt shaft shoulder is locked on the solid pin.
  • the bolt air groove F is connected to the air valve seat air groove D and the exhaust groove, so that the pneumatic wrench is switched to the working state of forward rotation. That is, every time the external force presses the button to the bottom and then releases it, the pneumatic wrench will switch and lock the working state of forward rotation and reverse rotation.
  • the housing is provided with a motor chamber, an exhaust chamber, and an air intake chamber, a sealing ring groove A is provided at the mouth of the air intake chamber, a screw hole B is provided under the motor chamber of the housing, a baffle mounting sink, and a sealing ring is provided. Ring groove B, through hole, spring positioning sink, button installation square hole.
  • the cylinder is placed in the motor group, and the cylinder is provided with an air groove A, an air groove B, a screw hole A, an eccentric inner hole, and an exhaust hole, and both ends are provided with arc grooves.
  • the air valve seat is provided with a sealing ring groove C, an air groove C, an air groove D, an air inlet hole, an air exhaust groove, an air valve hole, a screw through hole A, a solid pin mounting hole, and a gas valve seat sealing ring.
  • the air valve seat is connected with the cylinder through the screw A, so that the air groove C and the air cylinder air groove A are always connected, and the air groove D is always communicated with the cylinder air groove B, and the air inlet hole is always communicated with the air intake chamber of the casing;
  • the sealing ring A is placed in the groove A of the casing sealing ring, so that the air intake chamber of the casing is in sealing communication with the air inlet hole of the valve seat.
  • the valve bolt is provided with an air groove E, an air groove F, a shaft shoulder, a guide wheel shaft, a retaining ring groove, a square head, and a screw hole C, and the valve bolt can slide axially in the valve hole of the valve seat.
  • the outer circle of the guide wheel A is alternately provided with a rear stop guide slot with a certain inclination angle, a front stop guide slot with a certain inclination angle, a dead point of the front stop guide slot, a shaft center through hole A, and a small end There is a card slot A.
  • the outer circle of the guide wheel B is provided with a guide groove with a certain inclination angle, the stop point of the guide groove, and the through hole B of the shaft center, and the small end is provided with a clamping groove B;
  • the guide pulley A is matched with the groove A, so that the guide pulley A and the guide pulley B form a guide pulley group.
  • the rear stop guide groove, the front stop guide groove and the guide rotation groove form a completed working guide groove.
  • the wheel shaft can be rotated;
  • the valve bolt retaining ring groove is equipped with an E-type retaining ring, which is used to limit the axial relative movement of the guide wheel group and the valve bolt, so that the guide wheel group and the valve bolt can move axially together.
  • the solid pin is inserted into the installation hole of the solid pin of the valve seat and placed in the working guide groove of the guide wheel set.
  • the guide wheel set can only perform specific axial movement and autorotation movement due to the restraint of the solid pin.
  • the button is provided with a spring positioning shaft, a square hole, and a screw sink, the square hole is matched with the square head of the valve bolt, and is locked by a screw C, so that the valve bolt and the button are integrally connected, and the button is installed on the installation side of the shell button.
  • the valve bolt and the key can only move axially but cannot rotate axially.
  • the reset spring is placed between the housing spring positioning sink and the button spring positioning shaft, and plays the role of locking the forward and reverse working state of the valve bolt and restoring the state.
  • the beneficial effects of the present invention are: a device for switching and locking the forward and reverse functions of the pneumatic wrench is adopted.
  • a self-locking button is used to switch the forward and reverse rotation of the pneumatic wrench, which simplifies the operation. All personnel can obtain the same operating feel, which reduces the occurrence of misoperation.
  • Fig. 1 is the exploded structure schematic diagram of the present invention
  • Fig. 2 is the exploded structure schematic diagram of the present invention
  • Figure 3 is a schematic diagram of the upper half of the shell
  • Figure 4 is a schematic diagram of the cylinder structure
  • Figure 5 is a schematic diagram of the structure of the upper half of the valve seat
  • FIG. 6 is a schematic diagram of the valve plug structure
  • FIG. 7 is a schematic diagram of the structure of Introduction A
  • FIG. 8 is a schematic diagram of the structure of Introduction B
  • Figure 9 is a schematic diagram of the structure of the upper part of the button
  • Figure 10 is a schematic diagram of the partial structure of the present invention.
  • Figure 11 is a schematic diagram of the structure of the present invention in the forward rotation working state
  • Fig. 12 is the state schematic diagram of the first step of switching the reverse working state of the present invention
  • Fig. 13 is the state schematic diagram of the first step of switching to the reverse working state of the present invention
  • Figure 15 is a schematic diagram of the gas flow in the left half of the forward rotation state
  • Figure 16 is a schematic diagram of the gas flow in the left half of the reverse state
  • Figure 17 is a schematic diagram of the lower half of the valve seat
  • Figure 18 is a schematic diagram of the structure of the lower half of the button
  • Figure 19 is a schematic cross-sectional view of the forward rotation working state
  • Figure 20 is a schematic cross-sectional view of the present invention switching to the reverse working state
  • Figure 21 is a schematic diagram of the lower half of the housing
  • Figure 22 is a schematic diagram of the gas flow in the right half of the forward rotation state
  • Figure 23 is a schematic diagram of the gas flow in the right half of the reverse state
  • Fig. 24 is the state schematic diagram of the second step of switching the reverse working state of the present invention
  • Fig. 25 is a state schematic diagram of the third step of switching the reverse working state of the present invention
  • Fig. 26 is the state schematic diagram of the second step of switching to the reverse working state of the present invention
  • Figure 27 is a state schematic diagram of the present invention switching to the third step of the reverse working state
  • FIG. 28 is a state diagram of the fourth step of switching to the reverse working state of the present invention.
  • a device for switching and locking the forward and reverse states of a pneumatic wrench with one button comprises a casing 1, a cylinder 2, a screw A3, a valve seat sealing ring 4, a gas valve seat 5, and a sealing ring A6 , valve bolt 7, guide wheel A8, guide wheel B9, E-type retaining ring 10, solid pin 11, screw B12, baffle 13, sealing ring B14, button 15, return spring 16, screw C17;
  • housing 1 is equipped with a motor Chamber 1-1, exhaust chamber 1-2, intake chamber 1-3, a sealing ring groove A1-4 is provided at the mouth of intake chamber 1-3, and a screw hole B1 is provided under the motor chamber 1-1 of housing 1 -5, baffle installation sink 1-6, sealing ring groove B1-7, through hole 1-8, spring positioning sink 1-9, button installation square hole 1-10;
  • cylinder 2 is placed in motor group 18, Cylinder 2 is provided with air groove A2-1, air groove B2-2, screw hole A2-3, eccentric inner hole 2-4, exhaust hole 2-5, both ends are
  • the small end is provided with a card slot A8-5; the outer circle of the guide wheel B9 is provided with a guide groove 9-1 with a certain inclination angle, the stop point of the guide groove 9-2, and the shaft through hole B9-3.
  • a card slot B9-4 There is a card slot B9-4; the guide wheel B9 is matched with the guide wheel A8 card slot A8-5 through the card slot B9-4, so that the guide wheel A8 and the guide wheel B9 form the guide wheel group 20, the rear stop guide groove 8-1, the front The stop guide groove 8-2 and the guide rotation groove 9-1 form a completed working guide groove.
  • the guide wheel group 20 is installed on the guide wheel shaft 7-4 of the valve bolt 7 and can be rotated; the valve bolt 7 retaining ring groove 7-5 is installed An E-type retaining ring 10 is used to limit the axial relative movement of the guide wheel group 20 and the valve bolt 7, so that the guide wheel group 20 and the valve bolt 7 can move axially together; the solid pin 11 is inserted into the valve seat 5 solid pin
  • the installation holes 5-8 are placed in the working guide groove of the guide wheel group 20, restrained by the solid pin 11, the guide wheel group 20 can only perform specific axial movement and autorotation movement; the sealing ring B14 and the baffle 13 are placed in sequence In the housing 1 sealing ring groove B1-7, baffle installation sink 1-6, through Screw B12 to lock the baffle plate 13 on the shell 1; the valve bolt 7 guide wheel shaft 7-4 passes through the inner hole of the sealing ring B14 and the through hole 1-8 of the shell 1 into the square hole 1-10 of the shell 1 button installation , the sealing ring B14 plays the role of isolating
  • the air groove F7-2 of the valve bolt 7 is connected to the air inlet hole 5-4 of the valve seat 5 and the air groove D5-3, and the air groove E7-1 of the valve bolt 7 is connected to the air groove C5-2 of the valve seat 5 and the air groove D5-3.
  • Shell 1 exhaust chamber 1-2 so that the pneumatic wrench is switched to the reverse working state; when the button 15 is pressed by external force again, the button 15 pushes the valve bolt 7, E-type retaining ring 10, and guide wheel group 20 to overcome the return spring 16 axis
  • the guide wheel group 20 automatically rotates in order to avoid the solid pin 11, and finally the guide groove of the guide wheel B9 stops at the point of rotation. 9-2 is locked on the solid pin 11, at this time, the external force of the button 15 is released.
  • the valve bolt 7, the guide wheel group 20, the E-type retaining ring 10, and the button 15 start to make an axial reset movement.
  • the housing 1 is provided with a motor chamber 1-1, an exhaust chamber 1-2, and an intake chamber 1-3, and a sealing ring groove A1-4 is provided at the mouth of the intake chamber 1-3.
  • screw holes B1-5 under the housing 1 motor chamber 1-1, baffle mounting sinks 1-6, sealing ring grooves B1-7, through holes 1-8, spring positioning sinks 1-9, button installation Square holes 1-10.
  • the cylinder 2 is placed in the motor group 18, and the cylinder 2 is provided with an air groove A2-1, an air groove B2-2, a screw hole A2-3, an eccentric inner hole 2-4, and an exhaust hole 2-5 , there are arc grooves 2-6 on both ends.
  • the valve seat 5 is provided with a sealing ring groove C5-1, an air groove C5-2, an air groove D5-3, an air inlet hole 5-4, and an air outlet groove 5-5 , air valve hole 5-6, screw through hole A5-7, solid pin mounting hole 5-8, the air valve seat sealing ring 4 is placed in the sealing ring groove C5-1, isolating the air groove C5-2, the air groove D5- 3 and the outside world; the air valve seat 5 is connected with the cylinder 2 through the screw A3, so that the air groove C5-2 is always connected with the air groove A2-1 of the air cylinder 2, and the air groove D5-3 is connected with the air groove of the air cylinder 2.
  • valve bolt 7 is provided with an air groove E7-1, an air groove F7-2, a shaft shoulder 7-3, a guide wheel shaft 7-4, a retaining ring groove 7-5, and a square head 7-6 , Screw hole C7-7, valve bolt 7 can slide axially in valve seat 5 and valve hole 5-6.
  • the outer circle of the guide wheel A8 is alternately provided with a rear guide groove 8-1 with a certain inclined angle, a front guide groove 8-2 with a certain inclined angle, and a front guide groove dead point 8- 3.
  • the shaft through hole A8-4, and the small end is provided with a card slot A8-5.
  • the outer circumference of the guide wheel B9 is provided with a guide groove 9-1 with a certain inclination angle, a stop point 9-2 of the guide groove, and a shaft through hole B9-3.
  • the guide wheel group 20 is installed on the valve bolt 7 guide wheel shaft 7-4 and can be rotated; the valve bolt 7 retaining ring groove 7- 5. Install an E-type retaining ring 10 to limit the axial relative movement of the guide wheel group 20 and the valve bolt 7, so that the guide wheel group 20 and the valve bolt 7 move axially together.
  • the solid pin 11 is inserted into the solid pin mounting holes 5-8 of the valve seat 5 and placed in the working guide groove of the guide wheel group 20. Due to the restraint of the solid pin 11, the guide wheel group 20 can only be used for a specific purpose. Axial motion and rotational motion.
  • the button 15 is provided with a spring positioning shaft 15-1, a square hole 15-2, and a screw sink.
  • the square hole 15-2 is matched with the square head 7-6 of the valve bolt 7, and is locked by a screw C17. Tighten, connect the valve bolt 7 and the button 15 as a whole, and the button 15 is installed in the button installation square hole 1-10 of the casing 1, so that the valve bolt 7 and the button 15 can only move axially and cannot rotate axially.
  • the return spring 16 is placed between the spring positioning sink 1-9 of the housing 1 and the spring positioning shaft 15-1 of the button 15, and plays the role of locking the forward and reverse working state of the valve bolt 7 and restoring the state.
  • the guide wheel group 20 When contacting the solid pin 11, the guide wheel group 20 automatically rotates to avoid the solid pin 11, and finally the dead point 8-3 of the front guide groove of the guide wheel A8 is locked on the solid pin 11.
  • the valve bolt 7 air groove F7 -2 is connected to the air inlet hole 5-4 of the valve seat 5 and the air groove D5-3, and the air groove E7-1 of the valve bolt 7 is connected to the air groove C5-2 of the valve seat 5 and the exhaust chamber 1-2 of the shell 1 , at this time switch to the reverse working state, the air intake of the pneumatic wrench will work reversely.
  • the compressed air enters the air inlet chamber 1-3 of the housing 1, passes through the air inlet hole 5-4 of the valve seat 5, and the air groove of the valve bolt 7 E7-1, air valve seat 5 air groove C5-2, enter the motor group 18 cylinder 2 air groove A2-1, make the motor group 18 rotate clockwise and drive the strike group 19 to rotate clockwise.
  • the exhaust process in the forward working state is divided into two parts:
  • Part of the exhaust gas is discharged from the exhaust hole 2-5 of the cylinder 2 of the motor group 18, and is discharged to the outside through the exhaust chamber 1-2 of the casing 1.
  • the rest of the exhaust gas is discharged from the air groove B2-2 of the motor group 18 cylinder 2, and enters the housing row 1 through the air valve seat 5 air groove D5-3, the valve bolt 7 air groove F7-2, and the air valve seat 5 exhaust groove 5-5
  • the air chambers 1-2 are exhausted from the outside.
  • the compressed air continues to flow through the above path, which can realize the continuous clockwise rotation of the pneumatic wrench.
  • the exhaust process in the reverse working state is divided into two parts:
  • valve plug air groove F is connected to the air inlet hole of the valve seat and the air groove D
  • valve plug air groove E is connected to the air valve seat air groove C and the housing exhaust chamber.
  • the guide wheel group When the rear stop guide groove of the guide wheel A in the guide wheel group contacts the solid pin, the guide wheel group automatically rotates to avoid the solid pin, and finally the valve bolt shaft shoulder is locked.
  • the valve plug air groove E is connected to the air inlet hole of the valve seat and the air groove C, and the valve plug air groove F is connected to the valve seat air groove D and the exhaust groove. At this time, it switches to the forward rotation working state. , the air intake of the pneumatic wrench will work forward.
  • the compressed air enters the air intake chamber of the housing, and enters through the air inlet hole of the valve seat, the air groove E of the valve bolt, the air groove C of the valve seat,
  • the air groove A of the motor group cylinder makes the motor group rotate clockwise to drive the strike group to rotate clockwise.
  • the exhaust process in the forward working state is divided into two parts:
  • Part of the exhaust gas is discharged from the exhaust hole of the cylinder of the motor group, and is discharged to the outside through the exhaust chamber of the casing.
  • the rest of the exhaust gas is discharged from the cylinder air groove B of the motor group, and enters the housing exhaust chamber through the valve seat air groove D, valve plug air groove F, and valve seat exhaust groove to be discharged to the outside world.
  • the exhaust process in the reverse working state is divided into two parts:
  • Part of the exhaust gas is discharged from the exhaust hole of the cylinder of the motor group, and is discharged to the outside through the exhaust chamber of the casing.
  • the rest of the exhaust gas is discharged from the cylinder air groove A of the motor group, and enters the housing exhaust chamber through the valve seat air groove C, the valve plug air groove E, and the valve seat air valve hole to be discharged to the outside world.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

La présente invention divulgue un dispositif pour commuter et verrouiller des états de rotation vers l'avant et vers l'arrière d'une clé à chocs à l'aide d'une clé, le dispositif comprenant un boîtier, un cylindre pneumatique, des vis A, une bague d'étanchéité de siège de soupape à air, un siège de soupape à air, une bague d'étanchéité A, un boulon de soupape, une roue de guidage A, une roue de guidage B, un bague de retenue en forme de E, une goupille pleine, des vis B, un déflecteur, une bague d'étanchéité B, une clé, un ressort de rappel et une vis C, le boîtier étant pourvu d'une chambre de moteur, d'une chambre d'échappement d'air et d'une chambre d'admission d'air; une fente de bague d'étanchéité A est disposée au niveau d'une partie d'ouverture de la chambre d'admission d'air; et un trou de vis B, une plate-forme enfoncée de montage de déflecteur, une fente de bague d'étanchéité B, un trou traversant, une plate-forme enfoncée de positionnement de ressort et un trou carré de montage de clé sont disposés au-dessous de la chambre de moteur du boîtier. Selon le dispositif de commutation et de verrouillage des fonctions de rotation vers l'avant et vers l'arrière de la clé à chocs à l'aide d'une clé, les modes de commutation de type à rotation et à deux clés d'une clé à chocs classique sont abandonnés, et les rotations vers l'avant et vers l'arrière de la clé à chocs sont commutées en utilisant une clé dans un état auto-verrouillable, ce qui simplifie les opérations.
PCT/CN2021/132265 2021-01-19 2021-11-23 Dispositif de commutation et de verrouillage des fonctions de rotation vers l'avant et vers l'arrière d'une clé à chocs à l'aide d'une clé Ceased WO2022166318A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110065895.7A CN112518650A (zh) 2021-01-19 2021-01-19 一种采用一个按键切换并锁定气动扳手正反转功能的装置
CN202110065895.7 2021-01-19

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WO2022166318A1 true WO2022166318A1 (fr) 2022-08-11

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112518650A (zh) * 2021-01-19 2021-03-19 漳州南方机械有限公司 一种采用一个按键切换并锁定气动扳手正反转功能的装置

Citations (6)

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CN1247792A (zh) * 1998-07-28 2000-03-22 罗德克拉福特气动工具股份有限两合公司 带可关断的冲击机构的冲击式螺丝扳手
US20110259155A1 (en) * 2010-04-23 2011-10-27 Chen Chi-Chen Compact one touch pneumatic wrench
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