CN111906729B

CN111906729B - Pressure display mechanism of pneumatic tool

Info

Publication number: CN111906729B
Application number: CN202010143300.0A
Authority: CN
Inventors: 廖永源
Original assignee: Jonnesway Enterprise Co ltd
Current assignee: Jonnesway Enterprise Co ltd
Priority date: 2019-05-09
Filing date: 2020-03-04
Publication date: 2022-03-08
Anticipated expiration: 2040-03-04
Also published as: CN111906729A; TW202041332A; TWI690395B

Abstract

A pressure display mechanism of a pneumatic tool comprises: a pressure indicating mechanism provided on a pneumatic tool, the pressure indicating mechanism having: a base, an actuator, an elastic element and a display area; the base body is communicated with a cylinder chamber of a cylinder of the pneumatic tool; the actuating piece is arranged in a displacement space, can displace in the displacement space and is provided with a marking part; the display area of the pressure display mechanism is provided with at least three different display blocks, and when the actuating member displaces, the indication part indicates the different display blocks along with the change of the gas pressure of the pneumatic tool.

Description

Pressure display mechanism of pneumatic tool

Technical Field

The present invention relates to a pneumatic tool, and more particularly, to a pressure display mechanism of a pneumatic tool capable of clearly indicating a pressure state.

Background

In the use process of a general pneumatic tool, it is desirable to provide an effect of displaying a pneumatic pressure value, such as the effect of taiwan patent No. I621508: the utility model provides a pneumatic tool that can show cylinder pressure, this pneumatic tool is equipped with a display mechanism, this display mechanism and this pneumatic tool's cylinder intercommunication, makes the atmospheric pressure of the high-pressure gas who gets into in this pneumatic motor can reach this display mechanism, can see this display mechanism through setting up in a window of this pneumatic tool, lets the staff can follow this pneumatic tool's outside and clearly learn the atmospheric pressure size in the cylinder promptly to judge whether pneumatic tool is operating at appropriate operating pressure.

In the known pneumatic tool, the movable distance of the display mechanism is limited by the size of the body and cannot be too large, in order to display various different states, the display mechanism needs to be marked in a narrow position, and besides the difficulty in marking, when a user reads and judges the content in the display mechanism, two different states are often displayed in a window at the same time, so that the user cannot determine the current state and cannot operate correctly.

Disclosure of Invention

The main object of the present invention is to provide a pressure display mechanism for a pneumatic tool, which is easy to determine the state of air pressure.

It is a secondary objective of the present invention to provide a pressure display mechanism for a pneumatic tool, which can indicate different display areas by an actuating element according to the magnitude of the change of the gas pressure.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a pressure display mechanism of a pneumatic tool, comprising:

a pneumatic tool having: the device comprises a body, a pneumatic motor and an output mechanism, wherein the body is internally provided with an accommodating space; the pneumatic motor and the output mechanism are arranged in the accommodating space, and the output mechanism is connected with the pneumatic motor; the pneumatic motor includes: a cylinder, which is internally provided with a cylinder chamber; a rotor arranged in the cylinder;

a pressure display mechanism having: a base, an actuator and a display area; the seat body is arranged in the accommodating space and corresponds to the pneumatic motor, and is provided with a displacement space and a through hole arranged on one wall surface of the displacement space, and the through hole is communicated with the displacement space; the cylinder chamber of the cylinder is communicated with the displacement space through the through hole; the displacement space has a first end and a second end; the actuating component is arranged in the displacement space and moves in the displacement space; a marking part arranged outside the actuating part; the display area of the pressure display mechanism can be displayed on the outer side of the body, and the display area is provided with three different display blocks; when the actuating piece displaces, the marking part indicates different display blocks along with the change of the gas pressure of the pneumatic tool; a communicating chamber arranged at the rear end of the cylinder of the pneumatic motor; the communicating chamber communicates the base with the pneumatic motor.

The display blocks are formed by different colors.

The pressure display mechanism further comprises a lens, a stepped flange is arranged on the periphery of the lens in a surrounding mode, an assembling hole is oppositely formed in the body, the lens is arranged in the assembling hole, and the flange is arranged on the inner side of the body.

The pressure display mechanism further comprises: a plate body; the display area is formed on the plate body, a display hole is arranged on the display area of the plate body in a penetrating mode, and the display area is arranged between the lens and the actuating piece.

The marking part is annularly arranged on the actuating piece.

The peripheral wall of the chamber of the cylinder is provided with at least one air flow channel, the communication chamber is arranged behind the cylinder, and the peripheral wall of the communication chamber of the air flow channel is provided with an air guide port; the seat body is arranged in the communicating chamber, and the air guide port is communicated with the through hole.

The base body is provided with a sleeve ring, the sleeve ring is provided with a guide hole in a penetrating way, the sleeve ring is arranged in the communicating chamber, and the guide hole is communicated with the air guide port; the displacement space of this pedestal supplies for a body the actuator is put into, displacement space both sides are equipped with an end cover respectively: the side wall of the tube body is provided with a window hole which transversely spans the display block.

The display blocks are provided with three display blocks with different pressure values, and a transition display block is arranged between every two adjacent display blocks.

The invention has the beneficial effects that: when the actuating element moves due to pressure change in the displacement space, the single marking part can clearly indicate on the single display area block, so that a user can clearly know the current pressure state.

To further clarify the objects and features of the present invention and its advantages, an examiner should hereinafter refer to three preferred embodiments and the accompanying drawings.

Drawings

Fig. 1 is a perspective view of a preferred embodiment of the present invention.

FIG. 2 is a transverse cross-sectional view of the preferred embodiment of the present invention.

Fig. 3 is a schematic view illustrating the communication between the cylinder and the seat.

FIG. 4 is a rear side view of a display area presentation position within the pneumatic tool.

Fig. 5 is a schematic diagram of the action of the actuating element in an unstressed state.

Fig. 6 is a schematic diagram of the action of the actuating element in a stressed state.

Fig. 7A is a schematic diagram of the indication portion indicating that the pressure is insufficient in the display area.

Fig. 7B is a diagram illustrating the operation pressure display area indicated by the indicator.

Fig. 7C is a diagram illustrating the indication of the pressure exceeding display area by the indicator.

FIG. 8A is a diagram illustrating a first over display area indicated by a label according to another preferred embodiment.

FIG. 8B is a diagram illustrating the indication of the second over display area by the indication portion according to another preferred embodiment.

FIG. 9 is a diagram illustrating a first over display area indicated by a label according to a third preferred embodiment.

Reference numerals: 10: a pneumatic tool; 20: a body; 21: an accommodating space; 22: an air intake passage; 23: assembling holes; 24: a lens; 241: a flange; 30: a pneumatic motor; 31: a cylinder; 311: a cylinder chamber; 312: a communicating chamber; 313: an air flow passage; 314: an air guide port; 32: a rotor; 321: a bearing; 40: a power take-off mechanism; 50: a pressure display mechanism; 60: a base body; 61: a sleeving connection ring; 611: a guide hole; 62: a displacement space; 621: a through hole; 622: a window aperture; 623: a first end; 624: a second end; 625: an end cap; 70: an actuating member; 71: a marking section; 711: a marking ring; 80: an elastic element; 90: a display area; 91: displaying the block; 911: an insufficient pressure display block; 912: an operating pressure display block; 913: the pressure exceeds the display area; 914: a first excessive display block; 915: a second excessive display block; 92: the holes are displayed.

Detailed Description

Referring to fig. 1 to 5, a pneumatic wrench according to a preferred embodiment of the present invention is provided, but not limited to a pneumatic wrench, which includes a pneumatic tool 10 and a pressure display mechanism 50:

the pneumatic tool 10, which has a main body 20, a pneumatic motor 30 and a power output mechanism 40; the main body 20 has a containing space 21 for containing the air motor 30 and the power output mechanism 40, an air inlet passage 22 is arranged below the main body 20, the air inlet passage 22 can be communicated with the containing space 21, and the air is supplied to the containing space 22 by the air inlet passage 22, and the main body 20 is provided with an assembling hole 23 on the rear end wall surface; the assembling hole 23 is provided with a lens 24, a step-shaped flange 241 is annularly arranged on the periphery of the lens 24, the flange 241 is arranged on the inner side of the wall surface of the body 20, and a gasket is arranged on the flange 241 to enhance the sealing property between the lens 24 and the assembling hole 23.

Referring to fig. 2 and 3, the pneumatic motor 30 has a cylinder 31 and a rotor 32, the cylinder 31 has a front end with a chamber 311 and a rear end with a communicating chamber 312, the cylinder 31 has two air channels 313 around the chamber 311, the two air channels 313 can communicate with the air inlet channel 17, and the air inlet channel 17 can inject air pressure into one of the air channels 313.

Referring to fig. 3, an air channel 313 is provided with an air guide hole 314 on the peripheral wall of the communicating chamber 312, the pressure of the gas injected into the cylinder chamber 311 from the air channel 313 is guided into the air guide hole 314, so that the pressure between the communicating chamber 312 and the cylinder chamber 311 is the same, the rotor 32 is pivoted on the cylinder chamber 311 through a bearing 321, and the rotor 32 can be driven to rotate in the forward or reverse direction by injecting the compressed air from two different air channels 313; when the rotor 32 rotates, it will drive the power output mechanism 40 in front to rotate, so as to have a screwing or unscrewing operation on the workpiece (not shown); the structure and operation of the pneumatic tool are not essential to the present invention, and are not described herein.

Referring to fig. 2 and 5, the pressure display mechanism 50 includes a base 60, an actuator 70, an elastic element 80, and a display area 90; the seat body 60 is disposed in the accommodating space 21 and corresponds to the pneumatic motor 30, a sleeve ring 61 is annularly and convexly disposed at one end of the seat body 60, the sleeve ring 61 is disposed in the communicating chamber 312 at the rear end of the cylinder 31, a guide hole 611 is disposed through the peripheral wall of the sleeve ring 61, the position of the guide hole 611 coincides with the air guide port 314, a displacement space 62 is disposed on the seat body 60 and forms a tube, a through hole 621 is disposed through a sidewall of the displacement space 62, the through hole 621 communicates with the inside of the sleeve ring 61, the guide hole 611 communicates with the through hole 621, a long window hole 622 is axially disposed on the displacement space 62, two ends of the displacement space 62 are defined as a first end 623 and a second end 624, an end cap 625 is respectively disposed on the first end 623 and the second end 624 to form a seal, and the through hole is disposed at a side close to the first end 623.

The actuating member 70 is disposed in the displacement space 62 and has a marking portion 71, which is an annular marking ring 711, wherein when the actuating member 70 is displaced in the displacement space 62, the marking portion 71 is disposed in the window 622; the elastic element 80 is disposed between the actuator 70 and the second end 624 of the displacement space 62, and the elasticity thereof can urge the actuator 70 to displace toward the first end 623 of the displacement space 62; when the gas pressure in the cylinder chamber 311 enters the displacement space 62 through the through hole 621, the actuating member 70 is pushed to displace toward the second end 624 of the displacement space 62.

The display area 90 is disposed at the rear side of the body 20 corresponding to the assembly hole 23, the display area 90 is formed on a plate, please refer to fig. 4, the display area 90 has three different display blocks 91, which are a pressure deficiency display block 911, an operation pressure display block 912 and a pressure excess display block 912, respectively, and are formed by three different colors, for example, the pressure deficiency display block 911 may be yellow, the operation pressure display block 912 is green, and the pressure excess display block 913 is red; the plate body is provided with a display hole 92 on the display area 90 and straddles the three display blocks 91, the display hole 92 corresponds to the window hole 622 of the displacement space 62, the indicating ring 711 of the actuator 70 is displayed in the window hole 622 at any time, the width of the indicating ring 711 is smaller than half of any one of the three display blocks 91, and the indicating position of the indicating ring 711 is more definite. When the actuator 70 is displaced, the indication portion 71 indicates different display areas 91 according to the change of the internal gas pressure.

Referring to fig. 2, 3 and 6, when the pneumatic tool 10 is operated, the air pressure flowing into the air inlet channel 22 enters different air channels 313 along with the operation, and drives the rotor 32 to rotate clockwise or counterclockwise, and when the air channel 313 with the air guide hole 314 inputs air pressure, the air guide hole 314 is filled with air pressure simultaneously; if the air pressure flows into the cylinder chamber 311 through another air channel 313 without the air guide port 314, the air pressure is still brought into the air channel 313 with the air guide port 314 after the rotor 32 rotates, so that the air guide port 314 can be filled with the air pressure regardless of the clockwise or counterclockwise direction.

Referring to fig. 6, after the gas pressure is introduced into the gas guide hole 314, the gas pressure is transmitted to the communicating guide hole 611, and the guide hole 611 is further transmitted into the space of the socket ring 61 and then introduced into the displacement space 62 through the through hole 621.

When the gas pressure enters the displacement space 62, the same gas pressure as that in the cylinder chamber 311 pushes the actuating member 70, so that the actuating member 70 is pushed by the gas pressure to move toward the second end 624, and at the same time, the actuating member 70 presses the elastic element 80, so that the elastic element 80 generates an elastic force; the actuator 70 moves to different positions due to different gas pressure, and the indicating ring 711 relative to the indicating portion 71 moves to different display areas 91, for example: referring to fig. 7A, when the gas pressure is below 80PSI, the pressure is set to be insufficient, and at this time, the indicating ring 711 of the indicating portion 71 is located at the position of the indicating hole 92 corresponding to the insufficient pressure indicating block 911, i.e. yellow, so that the user knows that the current gas pressure has not reached the operable level; referring to fig. 7B, when the gas pressure is between 80PSI to 100PSI, the proper operation pressure is set, and at this time, the indicating ring 711 of the indicating portion 71 is located at the position of the display hole 92 corresponding to the operation pressure display block 912, i.e. green, so that the user knows that the current gas pressure is operable; referring to fig. 7C, when the gas pressure exceeds 100PSI, the pressure is set to be too high, and at this time, the indicating ring 711 of the indicating portion 71 is located at the position of the display hole 92 corresponding to the pressure exceeding display area 913, i.e. red, so that the user knows that the current gas pressure exceeds the operable level; when the gas pressure stops being input or is reduced, the elastic force of the elastic element 80 causes the actuator 70 to rebound toward the first end 623.

Please refer to fig. 8A and 8B, which are another preferred embodiment of the present invention, the main structure of which is the same as that of the previous preferred embodiment and thus will not be described again, wherein the display block 91 of the display area 90 is provided with five different display blocks 91, except for an originally provided under-pressure display block 911, an operating pressure display block 912 and an over-pressure display block 913, a first transition display block 914 is disposed between the under-pressure display block 911 and the operating pressure display block 912; a second excessive display area 915 is provided between the operating pressure display area 912 and the pressure excessive display area 913, when the indicator 71 is located at the position of the first excessive display area 914, it can be known that the gas pressure of the pneumatic tool 10 in the main body 20 tends to be insufficient, and at this time, the gas pressure needs to be supplemented again, so that the pneumatic tool 10 can be used again; on the other hand, when the indicator 71 is located in the second excessive display zone 915, which indicates that the gas pressure of the pneumatic tool 10 in the main body 20 is about to exceed the proper operating pressure, the user needs to stop working and perform pressure adjustment to avoid damaging the pneumatic tool 10 due to the exceeding of the operating pressure. In addition, referring to fig. 9, the first over display block 914 is overlapped between the under pressure display block 911 and the operating pressure display block 912; the second excessive display block 915 is overlapped between the operating pressure display block 912 and the pressure exceeding display block 913.

The magnitude of the operating pressure of the pressure display mechanism provided by the invention can be correspondingly operated through the magnitude of the elastic coefficient of the elastic element 80, and can be properly adjusted and changed. In operation, since the indicator ring 711 is smaller than the display area 91, the indication is clear and there is no unclear indication.

Claims

1. a pressure display mechanism of a pneumatic tool, is characterized in that, comprises:

A pneumatic tool has: a body, a pneumatic motor and an output mechanism, the body has a accommodating space; the pneumatic motor and the output mechanism are arranged in the accommodating space, and the output mechanism is connected with the pneumatic motor; the The air motor includes: a cylinder with a cylinder chamber inside; a rotor set in the cylinder;

A pressure display mechanism has: a seat, an actuating member, an elastic element and a display area; the seat is arranged in the accommodating space and corresponds to the air motor, and has a displacement space and is arranged in the displacement space A through hole in a wall of the cylinder, the through hole communicates with the displacement space; the cylinder chamber of the cylinder is communicated with the displacement space through the through hole; the displacement space has a first end and a second end; the actuating member is provided with In the displacement space, it can be displaced in the displacement space; a marking part is arranged on the outer side of the actuating piece; the elastic element is arranged between the actuating piece and the base, and its elasticity can urge the actuating piece to move The first end of the displacement space is displaced; when the air pressure in the cylinder enters the displacement space through the through hole, it pushes the actuating member to displace to the second end of the displacement space; the display area can display outside the body, the display The area has at least three different display blocks, and when the actuator is displaced, the marking portion is indicated in the different display blocks with the change of the gas pressure of the pneumatic tool;

a communication chamber, located at the rear end of the cylinder of the air motor; the communication chamber communicates the seat body and the air motor;

At least one air flow channel is arranged on the peripheral wall of the chamber of the cylinder, the communication chamber is arranged behind the cylinder, and the air flow channel is provided with an air guide port on the peripheral wall of the communication chamber; the seat body is arranged in the communication chamber , and the air guide port communicates with the through hole;

The seat body is provided with a socket ring, the socket ring is provided with a guide hole, the socket ring is arranged in the communication chamber, and the guide hole is communicated with the air guide port; the displacement space of the seat body is A pipe body is used for inserting the actuating element, and one end cover is respectively provided on both sides of the displacement space; a window hole is provided on the side wall of the pipe body, and the window hole is arranged horizontally across the display block.

2 . The pressure display mechanism of an air tool according to claim 1 , wherein each of the display blocks is formed of different colors. 3 .

3. The pressure display mechanism of a pneumatic tool as claimed in claim 1 or 2, further comprising a lens, the peripheral ring of the lens is provided with a stepped flange, and an assembly hole is relatively opened on the body, The lens is installed in the assembly hole, and the flange is arranged inside the body.

4 . The pressure display mechanism of a pneumatic tool as claimed in claim 3 , further comprising: a plate body; the display area is formed on the plate body, and the plate body passes through the display area. 5 . There is a display hole, and the display area is set between the lens and the actuating member.

5 . The pressure display mechanism of an air tool according to claim 1 or 2 , wherein the marking portion is annularly arranged on the actuating member. 6 .

6. The pressure display mechanism of a pneumatic tool as claimed in claim 1, wherein the display block is provided with three display blocks with different pressure values, and an excessive display area is provided between every two adjacent display blocks piece.