TWM635994U - Mechanism for switching forward and reverse rotation functions and controlling rotation speed on pneumatic wrench - Google Patents

Abstract

This creation discloses a mechanism for switching forward and reverse functions and controlling speed on a pneumatic wrench, which involves The technical field of pneumatic wrench includes a shell, a valve sleeve, an adjustment button and a motor. slot, reverse air intake slot, reverse exhaust slot, valve sleeve assembly hole, I gear forward speed gear slot, II gear forward speed gear slot, III gear forward speed gear slot, reverse Rotation speed gear slot, gear mark, handle air intake chamber and handle exhaust chamber. This creation abandons the traditional axial rotation parallel to the drive head and the two-button switching pneumatic wrench function, fully considers ergonomics, adopts the axial rotation layout perpendicular to the drive head axis, and optimizes and improves the structural design to achieve Operators with different hand habits can operate the speed control and forward and reverse switching functions of the pneumatic wrench with one hand without changing the grip.

Description

Mechanism for switching forward and reverse functions and controlling speed on the pneumatic wrench

The invention relates to the technical field of pneumatic wrench, specifically a mechanism for switching the forward and reverse functions and controlling the rotating speed 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 positive and negative mechanism, and pushes the blade to drive the rotor to rotate, so that the striking mechanism produces an instantaneous high-energy alternating impact load. Because of its large torque output, it is safe to use Good performance, widely used in assembly lines, maintenance sites and other screw assembly and disassembly occasions.

The traditional forward and reverse switching mechanisms of pneumatic wrenches are generally divided into three categories: the first category is realized directly by the axial rotation of the regulating valve whose axial direction is parallel to the drive head. When the wrench is switched forward and reverse, the operator must use both hands Operation, that is, the operator holds the pneumatic wrench in one hand, and the other hand must be shifted to use the finger to rotate the knob of the regulating valve to realize the forward and reverse switching of the wrench. The second type is achieved directly through the axial linear movement of the regulating valve. The two ends of the regulating valve of this type of pneumatic wrench switch the forward and reverse mechanism always have one end protruding from the wrench housing. Movement realizes forward and reverse switching, but careful analysis, because of the structural limitations of such traditional pneumatic wrench switching forward and reverse devices, the two ends of the regulating valve are a certain distance from the hand grip, and the forward and reverse switching of the pneumatic wrench requires the operator to Only by changing the holding position can the thumb or forefinger be pressed to the protruding end of the regulating valve. The third type is achieved by indirectly pushing the regulating valve to make it rotate axially through two buttons located at the rear end of the wrench. The forward and reverse switching of this type of pneumatic wrench must also change the operator's hand posture. In summary, due to the structure Due to the above limitations, the functional switching of the traditional pneumatic wrench is not ergonomic, especially the shortcoming of bringing a lot of inconvenience to the operator when switching between forward and reverse.

The purpose of this creation is to provide a mechanism for switching forward and reverse functions and controlling speed on the pneumatic wrench, so as to solve the mechanism of switching forward and reverse functions and controlling speed of the traditional pneumatic wrench proposed in the background technology above. The problem that operators who cannot operate all functions and who cannot achieve different handedness (left-handed or right-handed) can share the same wrench.

In order to achieve the above purpose, this creation provides the following technical solutions: a mechanism for switching forward and reverse functions and controlling speed on a pneumatic wrench, including a housing, a valve sleeve, an adjusting knob and a motor, and a valve is arranged in the middle of the rear end of the housing. sleeve, and the shell includes air inlet A, positive rotation air intake slot, forward rotation exhaust slot, reverse air intake slot, reverse exhaust slot, valve sleeve assembly hole, and gear slot for forward rotation speed of gear I , Ⅱ gear forward rotation speed gear groove, Ⅲ gear forward rotation speed gear groove, reverse speed gear groove, gear position mark, handle air intake chamber and handle exhaust chamber, the rear end of the housing An air intake hole A is provided, and a forward rotation air intake slot is provided on the upper left side of the rear end of the housing, and one end of the forward rotation air intake slot is connected with a forward rotation exhaust slot, and the upper rear end right side of the housing is provided There is a reverse air intake slot, and one end of the reverse air intake slot is connected to a reverse exhaust slot, and a valve sleeve assembly hole is provided on the inner side of the middle of the rear end of the housing, and the left side of the housing is located at the center of the valve sleeve assembly hole. From top to bottom, the exterior is provided with a reverse speed gear slot, a forward speed gear slot for gear I, a forward speed gear slot for II gear, and a forward speed gear slot for III gear. There is a gear mark on the outer left side of the rotation speed gear groove, one end of the air inlet A is connected to a handle air intake chamber, and the right side of the handle air intake chamber is connected to a handle exhaust chamber, and the valve sleeve is arranged on The inner side of the fitting hole of the valve sleeve, and the inner side of the valve sleeve is connected with a regulating valve, one end of the regulating valve is provided with a sealing ring A, and the other end of the regulating valve is provided with a sealing ring B, and the regulating button is connected to the valve sleeve Outside, and the lower end of one side of the adjustment button is connected with a gear spring A, the lower end of the gear spring A is connected with a steel ball A, and the lower end of the other side of the adjustment button is connected with a gear spring B, and the lower end of the gear spring B A steel ball B is connected, a screw A is pierced inside one side of the adjustment knob, and a screw B is pierced inside the other side of the adjustment knob, and the motor is arranged at the front end of the housing.

Preferably, the valve sleeve includes an air intake hole B, a forward rotation air intake hole, a forward rotation exhaust hole, a reverse air intake hole, a reverse air exhaust hole, an assembly identification groove and a regulating valve assembly hole, and the valve There is an air intake hole B in the middle of the lower end of the sleeve, and a positive rotation air intake hole is opened on the left side of the upper end of the valve sleeve, a forward rotation exhaust hole is opened on the right side of the lower end of the valve sleeve, and a reverse rotation is opened on the right side of the upper end of the valve sleeve. The air inlet hole, the left side of the lower end of the valve sleeve is provided with a reverse exhaust hole, and the right side of the valve sleeve is provided with an assembly identification groove, and the inside of the valve sleeve is provided with a regulating valve assembly hole.

Preferably, the air intake hole B, the forward rotation exhaust hole and the reverse rotation exhaust hole are integrated with the valve sleeve, and the air intake hole B, the forward rotation exhaust hole and the reverse rotation exhaust hole are in an equal shape. distance distribution.

Preferably, the regulating valve includes a forward rotation diversion groove, a reverse rotation diversion groove, a sealing ring groove A, a sealing ring groove B, a square head A, a screw hole A, a square head B and a screw hole B, and the regulating valve The left side of the regulating valve is provided with a forward diversion groove, the right side of the regulating valve is provided with a reverse diversion groove, and the right end of the regulating valve is provided with a sealing ring groove A, and the left end of the regulating valve is provided with a sealing ring groove B, and The middle part of the right end of the regulating valve is provided with a square head A, and the inside of the square head A is provided with a screw hole A, and the middle part of the left side of the regulating valve is provided with a square head B, and the inside of the square head B is provided with a screw hole B.

Preferably, the forward rotation diversion groove and the reverse rotation diversion groove are integrated with the regulating valve, and the square ends A and B are concentrically distributed with the regulating valve.

Preferably, the adjustment button includes a card slot A, a gear hole A, a through hole A, a forward rotation speed gear mark for gear I, a forward speed gear mark for gear II, and a forward speed gear mark for gear III. logo, reverse speed gear logo, card slot B, gear hole B, through hole B and anti-slip lever, and the inside of the right end of the adjustment button is provided with a card slot A, and the outside of the right end of the adjustment button is provided with a gear Position hole A, and the middle part of the right end of the adjustment knob is provided with a through hole A, and the right end of the adjustment knob is provided with the gear mark of the forward rotation speed of gear III, the gear mark of forward rotation speed of gear II, the gear mark of gear I The forward rotation speed gear mark and the reverse speed gear mark, and the inside of the left end of the adjustment button is provided with a card slot B, the outer side of the left end of the adjustment button is provided with a gear hole B, and the middle of the left end of the adjustment knob A through hole B is provided, and an anti-slip lever is provided outside the middle part of the adjusting button.

Preferably, the motor includes a forward rotation air hole and a reverse rotation air hole, and a forward rotation air hole is provided on the right side of one end of the motor, and a reverse rotation air hole is provided on the left side of one end of the motor.

This creation provides a mechanism for switching the forward and reverse functions and controlling the rotating speed on the pneumatic wrench, which has the following beneficial effects:

1. This creation abandons the traditional axial rotation parallel to the drive head and the two-button switching pneumatic wrench function, fully considers ergonomics, adopts the axial rotation layout perpendicular to the drive head axis, and improves the structural design through optimization , Realize that operators with different hand habits can operate the speed control and forward and reverse switching functions of the pneumatic wrench with one hand without changing the grip.

2. Through the optimization and improvement of various components, this creation makes the structure of the air passage more compact, thereby reducing the energy loss of the compressed air transmitted inside it and saving energy more.

The following will clearly and completely describe the technical solution in the embodiment of the invention with reference to the drawings in the embodiment of the invention. Obviously, the described embodiment is only a part of the embodiments of the invention, not all embodiments. Based on the embodiments in this creation, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this creation.

In the description of this creation, unless otherwise stated, "plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer" , "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this creation and simplifying the description, rather than Nothing indicating or implying that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation should therefore not be construed as limiting the invention. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

In the description of this creation, it should be noted that unless otherwise specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral Ground connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in this creation in specific situations.

Please refer to Figure 1‑14, this creation provides a technical solution: a mechanism for switching the forward and reverse functions and controlling the speed on the pneumatic wrench, including the housing 1, the air inlet A1‑1, the forward rotation air slot 1‑2, Forward rotation exhaust slot 1-3, reverse intake slot 1-4, reverse exhaust slot 1-5, valve sleeve fitting hole 1-6, gear Ⅰ forward rotation speed gear slot 1-7, gear Ⅱ Forward rotation speed gear slot 1‑8, Ⅲ gear forward rotation speed gear slot 1‑9, reverse speed gear slot 1‑10, gear mark 1‑11, handle air intake chamber 1‑12, handle Exhaust chamber 1‑13, valve sleeve 2, air inlet B2‑1, forward air inlet 2‑2, forward air outlet 2‑3, reverse air inlet 2‑4, reverse air outlet 2‑5, assembly identification groove 2‑6, regulating valve assembly hole 2‑7, regulating valve 3, forward rotation diversion groove 3‑1, reverse rotation diversion groove 3‑2, sealing ring groove A3‑ 3, sealing ring Groove B3‑4, square head A3‑5, screw hole A3‑6, square head B3‑7, screw hole B3‑8, sealing ring A4, sealing ring B5, adjustment knob 6, card slot A6‑1, gear hole A6‑2, through hole A6‑3, gear mark 6-4 for forward speed of gear I, gear mark 6‑5 for forward speed of gear II, gear mark 6‑6 for forward speed of gear III, reverse speed RPM mark 6‑7, card slot B6‑8, gear hole B6‑9, through hole B6‑10, anti-slip lever 6‑11, gear spring A7, steel ball A8, gear spring B9, steel ball B10 , screw A11, screw B12, motor 13, forward rotation air hole 13‑1 and reverse rotation air hole 13‑2, a valve sleeve 2 is arranged in the middle of the rear end of the housing 1, and the housing 1 includes an air inlet A1‑1, Forward rotation air intake slot 1‑2, forward rotation exhaust slot 1‑3, reverse rotation air intake slot 1‑4, reverse rotation exhaust slot 1‑5, valve sleeve fitting hole 1‑6, gear I forward rotation speed Gear slot 1-7, II gear forward speed gear slot 1-8, III gear forward speed gear slot 1-9, reverse speed gear slot 1-10, gear mark 1-11, The handle air intake chamber 1‑12 and the handle exhaust chamber 1‑13, the rear end of the housing 1 is provided with an air intake hole A1‑1, and the upper left side of the rear end of the housing 1 is provided with a forward rotation air slot 1‑ 2. One end of the forward rotation air intake slot 1‑2 is connected with the forward rotation exhaust slot 1‑3, and the reverse air intake slot 1‑4 is arranged on the upper right side of the rear end of the housing 1, and the reverse rotation air intake slot 1‑4 One end of 4 is connected with a reverse exhaust groove 1-5, and the inner side of the middle of the rear end of the housing 1 is provided with a valve sleeve fitting hole 1-6, and the left side of the housing 1 is located outside the valve sleeve fitting hole 1-6 from the top. From bottom to bottom, there are reverse speed gear slots 1‑10, I gear forward speed gear slots 1‑7, II gear forward speed gear slots 1‑8 and III gear forward speed gear slots 1‑9, the gear slot 1‑7 on the outside left side of gear 1‑9 and I gear is provided with a gear mark 1‑11, and one end of the air intake hole A1‑1 is connected to the handle air intake chamber 1‑12, and the handle takes in air The right side of the chamber 1-12 is connected with the handle exhaust chamber 1-13, the valve sleeve 2 is arranged on the inner side of the valve sleeve fitting hole 1-6, and the inner side of the valve sleeve 2 is connected with the regulating valve 3, and the valve sleeve 2 includes an air inlet Hole B2‑1, forward rotation air inlet 2‑2, forward rotation exhaust hole 2‑3, reverse air intake hole 2‑4, reverse exhaust hole 2‑5, assembly identification groove 2‑6 and regulating valve Assembling hole 2-7, air intake hole B2-1 is opened in the middle of the lower end of valve sleeve 2, and forward rotation air intake hole 2-2 is opened on the left side of the upper end of valve sleeve 2, and forward rotation row is opened on the right side of the lower end of valve sleeve 2 Air hole 2-3, and the reverse air inlet hole 2-4 is opened on the right side of the upper end of the valve sleeve 2, and the reverse exhaust hole 2-5 is opened on the left side of the lower end of the valve sleeve 2, and the right end side of the valve sleeve 2 is opened There are assembly identification grooves 2-6, and the inside of the valve sleeve 2 is provided with a regulating valve assembly hole 2-7, an air intake hole B2-1, a forward rotation exhaust hole 2-3 and a reverse rotation exhaust hole 2-5 and the valve sleeve 2 is an integrated structure, and the air intake hole B2‑1, the forward rotation exhaust hole 2‑3 and the reverse rotation exhaust hole 2‑5 are equidistantly distributed;

One end of the regulating valve 3 is provided with a sealing ring A4, and the other end of the regulating valve 3 is provided with a sealing ring B5. The regulating valve 3 includes a forward rotation diversion groove 3‑1, a reverse rotation diversion groove 3‑2, a sealing ring groove A3‑3, sealing ring groove B3‑4, square head A3‑5, screw hole A3‑6, square head B3‑7 and screw hole B3‑8, and the left side of the regulating valve 3 is provided with a positive rotation diversion groove 3‑ 1. The right side of the regulating valve 3 is provided with a reverse diversion groove 3-2, and the right end of the regulating valve 3 is provided with a sealing ring groove A3-3, and the left end of the regulating valve 3 is provided with a sealing ring groove B3-4, and the regulating valve The middle part of the right end of 3 is provided with a square head A3-5, and the inside of the square head A3-5 is provided with a screw hole A3-6, and the left middle part of the regulating valve 3 is provided with a square head B3-7, and the inside of the square head B3-7 is provided with There are screw holes B3‑8, the forward rotation diversion groove 3‑1 and the reverse rotation diversion groove 3‑2 form an integrated structure with the regulating valve 3, and the square head A3‑5 and the square head B3‑7 are in the shape of the regulating valve 3 Concentric distribution;

The adjustment knob 6 is connected to the outside of the valve sleeve 2, and the lower end of one side of the adjustment knob 6 is connected with a gear spring A7, and the adjustment knob 6 includes a card slot A6‑1, a gear hole A6‑2, a through hole A6‑3, I Gear mark 6-4 for forward rotation speed, 6-5 for forward speed for gear II, 6-6 for forward speed for gear III, 6-7 for reverse speed, card slot B6‑8, gear position hole B6‑9, through hole B6‑10 and anti-slip lever 6‑11, and the inside of the right end of the adjustment button 6 is provided with a card slot A6‑1, and the outside of the right end of the adjustment button 6 is provided with a gear Position hole A6‑2, and the middle part of the right end of the adjustment button 6 is provided with a through hole A6‑3, and the right end of the adjustment button 6 is provided with the gear mark 6‑6 for the forward rotation speed of the third gear and the forward rotation speed of the second gear in sequence from top to bottom. The speed gear mark 6-5, the first gear forward speed gear mark 6-4 and the reverse speed gear mark 6-7, and the inside of the left end of the adjustment knob 6 is provided with a card slot B6-8, and the adjustment knob 6 A gear hole B6-9 is provided on the outer side of the left end of the control button 6, and a through hole B6-10 is provided in the middle part of the left end of the adjustment button 6, and an anti-slip lever 6-11 is provided outside the middle part of the adjustment button 6;

A steel ball A8 is connected to the lower end of the gear spring A7, a gear spring B9 is connected to the lower end of the other side of the adjustment button 6, and a steel ball B10 is connected to the lower end of the gear spring B9, and a screw A11 is threaded inside one side of the adjustment knob 6. And the other side of the adjustment button 6 is provided with a screw B12 inside, and the motor 13 is arranged on the front end of the housing 1. The motor 13 includes a forward rotation air hole 13-1 and a reverse rotation air hole 13-2, and the right side of one end of the motor 13 is provided with a Forward rotation air hole 13-1, the left side of one end of motor 13 is provided with reverse rotation air hole 13-2.

To sum up, the pneumatic wrench switches the forward and reverse functions and controls the speed mechanism. When in use, align the assembly identification groove 2-6 of the valve sleeve 2 with the gear position identification 1-11 of the housing 1 and install it into the valve sleeve of the housing 1. Match holes 1-6, so that air intake hole B2-1 on the valve sleeve 2, forward rotation air intake hole 2-2, forward rotation exhaust hole 2-3, reverse air intake hole 2-4, reverse air exhaust hole 2‑5 are respectively connected with the air inlet A1‑1 of the shell 1, the forward rotation air intake slot 1‑2, the forward rotation exhaust slot 1‑3, the reverse air intake slot 1‑4, and the reverse rotation exhaust slot 1‑ 5, and then install the regulating valve 3 into the regulating valve assembly hole 2-7 of the valve sleeve 2, and control the flow rate of the compressed air and guide the direction of the airflow by rotating the regulating valve 3. The sealing ring A4 and the sealing ring B5 are installed in the regulating Valve 3 sealing ring groove A3‑3, sealing ring groove B3‑4, the card slot A6‑1 and card slot B6‑8 of the adjustment button 6 correspond to the square head A3‑5 and square head B3‑7 of the regulating valve 3 On the regulating valve 3, the regulating valve 3 can be rotated and locked together with the regulating knob 6, the gear spring A7 and the steel ball A8 are installed in the gear hole A6-2 of the regulating knob 6, and the gear spring B9 and the steel ball B10 are installed in the In the gear hole B6-9 of the adjustment knob 6, the screw A11 passes through the through hole A6-3 of the adjustment knob 6 to lock on the screw hole A3-6 of the adjustment valve 3, and the screw B12 passes through the through hole B6-10 of the adjustment knob 6 to lock Tightly on the screw hole B3-8 of the regulating valve 3, so that the regulating knob 6 and the speed regulating valve 3 can rotate as a whole, and the anti-slip lever 6-11 of the regulating knob 6 is moved to make the steel ball A8 under the action of the gear spring A7 Stuck in the gear slot 1‑9 of the forward rotation speed of gear III of the housing 1, the regulating knob 6 and the regulating valve 3 are locked, and under the action of the forward and reverse diversion grooves 3‑1 and 3‑2 of the regulating valve 3 Valve sleeve 2 air intake hole B2-1, forward rotation air intake hole 2-2, forward rotation exhaust hole 2-3, reverse air intake hole 2-4 are all open, reverse rotation exhaust hole 2-5 is closed, this Compressed air enters the pneumatic wrench through air inlet A1-1 of housing 1, air inlet B2-1 of valve sleeve 2, regulating valve 3 forward rotation guide groove 3-1, and forward rotation air groove 1-2 of housing 1 The forward rotation function of the pneumatic wrench is realized in the motor 13; similarly, when the adjustment button 6 is turned on the anti-slip lever 6‑11, the steel ball A8 is stuck in the reverse speed gear slot 1‑10 of the housing 1 under the action of the gear spring A7 Inside, the regulating knob 6 and the regulating valve 3 are locked, and under the action of the forward and reverse diversion grooves 3‑1 and 3‑2 of the regulating valve 3, the air inlet B2‑1 of the valve sleeve 2 and the forward rotation air inlet 2 ‑2. Reverse rotation air intake 2‑4 and reverse rotation exhaust hole 2‑5 are all open, and forward rotation exhaust hole 2‑3 is closed. At this time, the compressed air passes through the air intake A1‑1 of the housing 1 and the valve sleeve 2 air intake hole B2-1, regulating valve 3 reverse diversion groove 3-2, shell 1 reverse air intake groove 1-4 enters the air wrench motor to realize the air wrench reverse function, when the adjustment button 6 is turned to prevent slipping The lever 6-11 makes the steel ball A8 stuck in the housing 1 under the action of the gear spring A7 In the speed gear groove 1-9, the intake hole B2-1 of the valve sleeve 2 produces different openings under the action of the forward rotation guide groove 3-1 of the regulating valve 3, so that the flow rate of the compressed air is controlled, so that Realized the function of controlling the speed of the pneumatic wrench;

There is an air inlet A1‑1 inside the rear end of the housing 1, which communicates with the air inlet chamber 1‑12 of the handle of the housing 1 and the air inlet B2‑1 of the valve sleeve 2; 1‑2 communicates with motor 13 forward rotation air hole 13‑1 and valve sleeve 2 forward rotation air hole 2‑2; the rear end of housing 1 is provided with reverse air intake slot 1‑4 and motor 13 reverse air hole 13‑2 2. The reverse air intake hole 2-4 of the valve sleeve 2 communicates; the forward rotation exhaust groove 1-3 is provided inside the housing 1 and communicates with the forward rotation exhaust hole 2-3 of the valve sleeve 2; the reverse rotation air hole 2-3 is provided inside the housing 1 Rotating exhaust groove 1-5 communicates with the reverse exhaust hole 2-5 of the valve sleeve 2; the forward rotating exhaust groove 1-3 and the reverse exhaust groove 1-5 inside the housing 1 pass through and connect with the handle of the housing 1 The exhaust chamber 1-13 is connected; the rear end of the housing 1 is provided with a gear mark 1-11 and a valve sleeve fitting hole 1-6 perpendicular to the axial direction of the pneumatic wrench drive head, and the gear mark 1-11 is used to control the valve sleeve 2 The angle of fitting hole 1-6 of the valve sleeve of housing 1; the rear end of housing 1 is provided with gear slots 1-7 for forward rotation speed of gear I, gear slots 1-8 of gears of forward rotation speed for gear II, Gear slot 1-9 for forward speed and gear slot 1-10 for reverse speed in gear III are used to lock the adjustment knob 6 and the rotation angle of the adjustment valve 3 through the steel ball and spring installed on the adjustment knob 6;

The assembly mark groove 2-6 of the valve sleeve 2 is aligned with the gear mark 1-11 of the housing 1 and put into the valve sleeve assembly hole 1-6 of the housing 1, so that the air intake hole B2-1 on the valve sleeve 2 and the forward rotation air intake Hole 2‑2, forward rotation exhaust hole 2‑3, reverse rotation air intake hole 2‑4, reverse rotation exhaust hole 2‑5 are respectively connected with the air intake hole A1‑1 of the housing 1 and the forward rotation air intake slot 1 ‑2, forward rotation exhaust slot 1‑3, reverse air intake slot 1‑4, reverse exhaust slot 1‑5 correspond; Rotatable air distribution;

Forward rotation diversion groove 3‑1 and reverse rotation diversion groove 3‑2 are used to control the flow and direction of compressed air. The outer circle of both sides of the regulating valve 3 is provided with sealing ring groove A3‑3 and sealing ring groove B3‑ 4. A sealing ring is installed in the sealing groove to avoid compressed air leakage; the two sides of the regulating valve 3 are equipped with a square head A3‑5, screw holes A3‑6, square heads B3‑7, screw holes B3‑8, and the regulating valve 3 Through the cooperation of square head A3-5, square head B3-7 and adjustment button 6 slot A6-1, card slot B6-8, the adjustment valve 3 can be rotated together with the adjustment knob 6, and the adjustment knob 6 is moved up and down to prevent slipping The lever 6-11 and the adjusting button 6 drive the square head A3-5 and the square head B3-7 of the regulating valve 3 through the card slot A6-1 and the card slot B6-8, so that the regulating valve 3 rotates together with the regulating button 6;

Forward rotation state; the steel ball A8 and steel ball B10 in the gear hole A6-2 and the gear hole B6-9 of the adjustment button 6 are locked in the housing 1Ⅲ gear under the action of the gear spring A7 and the gear spring B9. The speed gear slot 1-9 is the same for each gear in the forward rotation, so I won’t repeat it. At this time, the adjustment knob 6Ⅲ gear forward rotation speed gear mark 6-6 corresponds to the housing 1 gear mark 1-11, and the regulating valve 3 The square head A3-5 and the square head B3-7 are under the action of the adjustment button 6 slot A6-1 and the slot B6-8, and the adjustment valve 3 and the adjustment knob 6 maintain the same angle. Under the action of regulating valve 3 forward rotation guide groove 3-1 and reverse rotation guide groove 3-2, valve sleeve 2 air intake hole B2-1, forward rotation air intake hole 2-2, and reverse rotation air intake hole 2-2 4. The forward rotation exhaust holes 2‑3 are all open, and the reverse rotation exhaust holes 2‑5 of the valve sleeve 2 are closed. The air intake will work forward;

Reverse state; the steel ball A8 and steel ball B10 in the gear hole A6-2 and the gear hole B6-9 of the adjustment button 6 are locked in the reverse speed gear of the housing 1 under the action of the gear spring A7 and the gear spring B9 Position slot 1-10, at this time, the reverse rotation speed gear mark 6-7 of the adjusting knob 6 corresponds to the gear position mark 1-11 of the housing 1, and the square head A3-5 and B3-7 of the regulating valve 3 are on the adjusting button 6 Under the action of the card slot A6-1 and the card slot B6-8, the regulating valve 3 and the regulating knob 6 maintain the same angle. Under the action of regulating valve 3 forward rotation guide groove 3-1 and reverse rotation guide groove 3-2, valve sleeve 2 air intake hole B2-1, reverse rotation air intake hole 2-4, and forward rotation air intake hole 2-2 2. The reverse exhaust holes 2‑5 are open, and the forward rotation exhaust holes 2‑3 of the valve sleeve 2 are closed. At this time, the mechanism for switching the forward and reverse functions and controlling the speed on the pneumatic wrench is in the reverse working state. The pneumatic wrench Intake will work in reverse;

The principle of controlling the speed of the mechanism for switching the forward and reverse functions and controlling the speed of the pneumatic wrench;

When the external force moves the anti-slip lever 6-11 of the adjustment knob 6, the slot A6-1 and the slot B6-8 of the adjustment knob 6 drive the square head A3-5 and B3-7 of the adjustment valve 3 to rotate the adjustment valve 3, When the steel ball is locked in a certain speed gear slot of the housing 1 under the action of the gear spring, the air intake hole B2-1 of the valve sleeve 2 is opened by the regulating valve 3 to a certain degree, and the air intake hole B2 of the valve sleeve 2 ‑1 opening to control the flow of compressed air, thereby controlling the speed of the pneumatic wrench;

The principle of gas flow when the mechanism for switching the forward and reverse functions and controlling the speed of the pneumatic wrench is working;

During the air intake process, the compressed air enters the inside of the valve sleeve 2 through the handle intake chamber 1-12 of the housing 1, the air intake hole A1-1 of the housing 1, and the air intake hole B2-1 of the valve sleeve 2, and is positively transduced through the regulating valve 3 Flow groove 3-1, through valve sleeve 2 forward rotation air inlet 2-2, shell 1 forward rotation air inlet groove 1-2 and enters motor 13 to realize the working rotation of the pneumatic wrench;

During the exhaust process, the exhaust gas is discharged from the motor 13, enters the housing 1 and reverses the air intake slot 1-4, and the valve sleeve 2 reverses the air intake hole 2-4 to the inside of the valve sleeve 2, and passes through the regulating valve 3 and reverses the diversion groove 3 ‑2, through valve sleeve 2 forward rotation exhaust hole 2‑3, casing 1 forward rotation exhaust groove 1‑3, enters casing 1 handle exhaust chamber 1‑13, and discharges to the outside world;

The compressed air continues to flow through the above path, which can realize the continuous rotation of the wrench. If you need to switch the reverse work, you only need to toggle the adjustment button 6 anti-slip lever 6‑11 to switch the positive and negative working states of the pneumatic wrench, and the gas flow is the same .

The above is only a preferred specific implementation of this creation, but the scope of protection of this creation is not limited thereto. Anyone familiar with the technical field within the technical scope disclosed in this creation, according to the technical solution of this creation and its Any equivalent replacement or change of the creative concept shall be covered within the scope of protection of this creation.

1: Shell

1-1: Air intake hole A

1-2: forward rotation air slot

1-3: forward rotation exhaust slot

1-4: reverse air intake slot

1-5: reverse exhaust slot

1-6: Valve sleeve assembly hole

1-7: Ⅰ gear forward rotation speed gear slot

1-8: II gear forward rotation speed gear slot

1-9: Ⅲ gear forward rotation speed gear slot

1-10: reverse speed gear slot

1-11: gear identification

1-12: handle air intake chamber

1-13: Handle exhaust chamber

2: Valve sleeve B

2-1: Air intake hole

2-2: forward air intake

2-3: Forward rotation exhaust hole

2-4: reverse air intake

2-5: Reversed vent

2-6: Assembly identification groove

2-7: Regulating valve assembly hole

3: Regulating valve

3-1: Forward rotation guide groove

3-2: Reverse diversion groove

3-3: Seal ring groove A

3-4: Seal ring groove B

3-5: square head A

3-6: screw hole A

3-7: square head B

3-8: screw hole B

4: sealing ring A

5: sealing ring B

6: Adjustment button

6-1: Card slot A

6-2: Gear hole A

6-3: Through hole A

6-4: I gear forward rotation speed gear mark

6-5: Ⅱ gear forward rotation speed gear mark

6-6: Ⅲ gear forward rotation speed gear mark

6-7: Reverse speed gear mark

6-8: Card slot B

6-9: gear hole B

6-10: Through hole B

6-11: Anti-slip lever

7: Gear spring A

8: steel ball A

9: Gear spring B

10: steel ball B

11: Screw A

12: Screw B

13: Motor

13-1: Forward rotation air hole

13-2: Reversed stomata

[Figure 1] A schematic diagram of the exploded side view structure of the mechanism for switching the forward and reverse functions and controlling the speed of the pneumatic wrench of this creation; [Fig. 2] Schematic diagram of the disassembled rear view of the mechanism for switching the forward and reverse functions and controlling the speed of the pneumatic wrench of this creation; [Figure 3] A schematic diagram of the shell structure of the mechanism for switching the forward and reverse functions and controlling the speed of the pneumatic wrench of this creation; [Figure 4] A schematic diagram of the valve body structure of the mechanism for switching the forward and reverse functions and controlling the speed of the pneumatic wrench of this creation; [Figure 5] A schematic diagram of the assembly structure of the housing and the valve sleeve of the mechanism for switching the forward and reverse functions and controlling the speed of the pneumatic wrench of this creation; [Figure 6] Schematic diagram of the regulating valve structure of the mechanism for switching the forward and reverse functions and controlling the speed of the pneumatic wrench of this creation; [Figure 7] Schematic diagram of the structure of the adjustment button of the mechanism for switching the forward and reverse functions and controlling the speed of the pneumatic wrench of this creation; [Figure 8] A schematic diagram of the partial decomposition structure of the mechanism for switching the forward and reverse functions and controlling the speed of the pneumatic wrench of this creation; [Figure 9] Schematic diagram of the structure of the forward rotation working state of the mechanism for switching the forward and reverse functions and controlling the speed of the pneumatic wrench of this creation; [Figure 10] Schematic diagram of the structure of the reverse working state of the mechanism for switching the forward and reverse functions and controlling the speed of the pneumatic wrench of this creation; [Fig. 11] Schematic diagram of the structure of the working state of the rotating speed I of the mechanism for switching the forward and reverse functions and controlling the speed of the pneumatic wrench of this creation; [Figure 12] Schematic diagram of the structure of the working state of the rotating speed II of the mechanism for switching the forward and reverse functions and controlling the speed of the pneumatic wrench of this creation; [Fig. 13] Schematic diagram of the structure of the working state of the rotating speed III of the mechanism for switching the forward and reverse functions and controlling the rotating speed of the pneumatic wrench of this creation; [Figure 14] A schematic diagram of the gas flow structure of the mechanism for switching the forward and reverse functions and controlling the speed of the pneumatic wrench of this creation.

1: shell

2: Valve sleeve B

3: Regulating valve

4: sealing ring A

5: sealing ring B

6: Adjustment button

7: Gear spring A

8: steel ball A

9: Gear spring B

10: steel ball B

11: Screw A

12: Screw B

Claims (7)

A mechanism for switching forward and reverse functions and controlling speed on a pneumatic wrench, including a housing, a valve sleeve, an adjusting knob and a motor, characterized in that: a valve sleeve is arranged in the middle of the rear end of the housing, and the housing includes an advanced Air hole A, forward rotation air intake slot, forward rotation exhaust slot, reverse air intake slot, reverse exhaust air slot, valve sleeve assembly hole, first gear forward rotation speed gear slot, second gear forward rotation speed gear Position slot, gear slot for forward rotation speed of gear III, gear slot for reverse rotation speed, gear mark, handle air intake chamber and handle exhaust chamber, and an air intake hole A is arranged inside the rear end of the housing, and The left side of the upper rear end of the casing is provided with a forward rotation air intake slot, one end of the forward rotation air intake slot is connected with a forward rotation exhaust slot, and the right side of the upper rear end of the housing is provided with a reverse rotation air intake slot, and One end of the reversing air intake groove is connected with a reversing exhaust groove, and the inner side of the middle part of the rear end of the housing is provided with a valve sleeve assembly hole, and the left side of the housing is located outside the valve sleeve assembly hole from top to bottom. The reverse rotation speed gear slot, the first gear forward rotation speed gear slot, the second gear forward rotation speed gear slot and the third gear forward rotation speed gear slot, the outside of the first gear forward rotation speed gear slot There is a gear mark on the left side, one end of the air intake hole A is connected to a handle air intake chamber, and the right side of the handle air intake chamber is connected to a handle exhaust chamber, the valve sleeve is arranged on the inside of the valve sleeve assembly hole, and The inside of the valve sleeve is connected with a regulating valve, one end of the regulating valve is provided with a sealing ring, and the other end of the regulating valve is provided with a sealing ring B, the regulating button is connected to the outside of the valve sleeve, and the lower end of one side of the regulating button is connected to There is a gear spring A, a steel ball A is connected to the lower end of the gear spring A, a gear spring B is connected to the lower end of the other side of the adjusting button, and a steel ball B is connected to the lower end of the gear spring B, and the adjusting button A screw A is pierced inside one side of the knob, and a screw B is pierced inside the other side of the adjusting button, and the motor is arranged at the front end of the housing. The mechanism for switching the forward and reverse functions and controlling the speed of the pneumatic wrench as described in claim 1, wherein the valve sleeve includes an air intake hole B, a forward rotation air intake hole, a forward rotation exhaust hole, and a reverse rotation air intake hole , reversing exhaust hole, assembly identification groove and regulating valve assembly hole, the middle part of the lower end of the valve sleeve is provided with an air intake hole B, and the left side of the upper end of the valve sleeve is provided with a forward rotation air hole, the lower end of the valve sleeve There is a forward rotation exhaust hole on the right side, and a reverse air intake hole is opened on the right side of the upper end of the valve sleeve, a reverse exhaust hole is opened on the left side of the lower end of the valve sleeve, and an assembly identification groove is opened on the right side of the valve sleeve , the inside of the valve sleeve is provided with a regulating valve assembly hole. The mechanism for switching the forward and reverse functions and controlling the speed of the air wrench as described in claim 2, wherein the air intake hole B, the forward rotation exhaust hole and the reverse rotation exhaust hole are integrated with the valve sleeve, and the The air hole B, the forward rotation exhaust hole and the reverse rotation exhaust hole are equidistantly distributed. The mechanism for switching the forward and reverse functions and controlling the speed of the pneumatic wrench as described in claim 1, wherein the regulating valve includes a forward rotation guide groove, a reverse rotation guide groove, a sealing ring groove A, a sealing ring groove B, Square head A, screw hole A, square head B and screw hole B, and the left side of the regulating valve is provided with a forward rotation diversion groove, the right side of the regulating valve is provided with a reverse rotation diversion groove, and the right end of the regulating valve is provided with a Sealing ring groove A, the left end of the regulating valve is provided with a sealing ring groove B, and the middle part of the right end of the regulating valve is provided with a square head A, the inside of the square head A is provided with a screw hole A, and the left middle part of the regulating valve A square head B is provided, and a screw hole B is provided inside the square head B. The mechanism for switching forward and reverse functions and controlling the speed of the pneumatic wrench as described in claim 4, wherein the forward rotation guide groove and the reverse rotation guide groove are integrated with the regulating valve, and the square head A and the square Head B is concentrically distributed with the regulating valve. The mechanism for switching the forward and reverse functions and controlling the speed of the pneumatic wrench as described in claim 1, wherein the adjustment button includes a card slot A, a gear hole A, a through hole A, and a forward rotation speed gear of the first gear Logo, gear mark for forward rotation speed of gear II, gear mark of forward speed of gear III, gear mark of reverse speed gear, card slot B, gear hole B, through hole B and anti-slip lever, and the adjustment knob The inside of the right end is provided with a card slot A, the outer side of the right end of the adjustment button is provided with a gear hole A, and the middle part of the right end of the adjustment button is provided with a through hole A, and the right end of the adjustment button is sequentially provided with III gear mark for forward rotation speed, gear mark for forward speed for gear II, gear mark for forward speed for gear I, and gear mark for reverse speed, and a card slot B is provided on the inner side of the left end of the adjustment knob. A shift hole B is provided on the outer side of the left end of the adjusting button, and a through hole B is provided in the middle of the left end of the adjusting button, and an anti-slip lever is arranged outside the middle of the adjusting button. The mechanism for switching forward and reverse functions and controlling speed on the pneumatic wrench as described in claim 1, wherein the motor includes a forward rotation air hole and a reverse rotation air hole, and a forward rotation air hole is provided on the right side of one end of the motor, and the motor’s There is a reverse air hole on the left side of one end.

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