TWM473880U - Temperature rising and depressurization of hydraulic oil in pneumatic tool chamber - Google Patents

Description

Pneumatic tool chamber hydraulic oil temperature rise and pressure relief device

This creation is about the technical field of pneumatic tools, especially a pneumatic tool chamber hydraulic oil temperature rise and pressure relief device that can adjust the amount of hydraulic oil in time when the hydraulic oil temperature rises and volume expands.

Conventional pneumatic tools are rotated by high-pressure gas sources and have been widely used in applications such as drilling, locking or releasing such as bolts or nuts. The conventional pneumatic tool structure is attached to the main body of the pneumatic tool. Grip, air inlet and crimping mechanism. The pressing mechanism controls the high-pressure gas to enter the pneumatic tool as the power of the wind-driven mechanism, and coaxially rotates the oil chamber mechanism disposed at the front end, wherein a power shaft mechanism is disposed inside the oil chamber mechanism, and the front end of the power shaft mechanism is provided. The various tool heads are connected, and the structure combination is combined with the pressing mechanism for the control of the intake air, so that the high-pressure gas can enter the wind-driven mechanism to drive its high-speed rotation, coaxially interlocking the oil chamber mechanism connected to the front end, and driving the power shaft mechanism Rotate to achieve the purpose of locking the workpiece.

The problem faced by the aforementioned conventional pneumatic tools is that the high pressure gas can be sent to the wind drive mechanism and coaxially connected by the pressing mechanism as the intake air control. The oil chamber mechanism and the power shaft mechanism, but when the power shaft mechanism and the oil chamber mechanism act on each other for a period of time, the temperature of the hydraulic oil in the oil chamber mechanism is inevitably increased, and once the temperature of the hydraulic oil rises, the relative volume expansion increases. This causes a change in pressure that interferes with the smoothness of the interaction between the power shaft mechanism and the oil chamber mechanism.

When the temperature of the hydraulic oil rises and the volume expands, causing the power shaft mechanism and the oil chamber mechanism to actuate each other, the resistance between the components of the non-acting stroke is increased, resulting in waste of energy and wear of related components. Therefore, if the volume of oil in the oil chamber mechanism can be adjusted in a timely and automatic manner when the temperature of the hydraulic oil rises to cause volume expansion, eliminating this amount of expansion will help to improve this deficiency.

In view of the above problems and shortcomings of the prior art, the main purpose of the present invention is to provide a device for pulsing pneumatic tools to reduce the starting load. When the pulsed pneumatic tool is started, it automatically changes according to pressure, and the self-regulation reduces the starting. The loader.

According to the above object of the present invention, a device for reducing a starting load of a pulsed pneumatic tool is provided, which is disposed in an oil chamber mechanism of the pulsed pneumatic tool, and includes an oil chamber cylinder, an oil storage cylinder body and a rear end cover. And a blocking group. The oil storage cylinder body is disposed in the accommodating space of the oil chamber cylinder, and has an elliptical chamber and a accommodating hole in the axial direction, and at least one oil spill hole connecting the elliptical chamber and the accommodating hole in the radial direction . The rear end cover is disposed on the oil chamber cylinder to limit the cross section of the oil chamber cylinder and the elliptical chamber end, and is axially penetrated with a class shaft hole, and correspondingly accommodates The hole position is provided with a first oil passage connecting the shaft holes of the class. The blocking group is disposed in the receiving hole and is subjected to hydraulic oil pressure in the elliptical housing to selectively close the oil spill hole. With the composition of the above components, the hydraulic oil in the elliptical volume chamber is driven by the pressure, and the optional overflowing oil hole overflows into the accommodating hole to adjust the pressure of the hydraulic oil in the elliptical volume chamber, and the pulse type pneumatic tool is lowered. The kinetic energy required at startup.

1‧‧‧ pneumatic tools

10‧‧‧ Subject

11‧‧‧ Pressing structure

12‧‧‧ Inlet

2‧‧‧Wind drive agency

3‧‧‧Dissipation mechanism

4‧‧‧Power shaft mechanism

41‧‧‧Power shaft

42‧‧‧ shaft seat

421, 421’‧‧‧ Sockets

4211, 4211’‧‧‧ recessed area

4212, 4212’‧‧‧ Smooth zone

43‧‧‧ oil blade

5‧‧‧ Oil room agency

51‧‧‧ oil chamber cylinder

511‧‧‧ accommodating space

52‧‧‧ oil storage cylinder

521‧‧‧ chamber

522, 522'‧‧‧ accommodating holes

53‧‧‧ front end cover

531‧‧‧ front axle hole

532‧‧‧ front end oil circuit

54‧‧‧Back end cover

541‧‧‧ Rear axle hole

542‧‧‧Back end oil circuit

55‧‧‧Locking group

551‧‧‧Flexible components

552‧‧‧ push block

Figure 1 is a schematic diagram of an embodiment of a hydraulic oil temperature rise and pressure relief device for a pneumatic tool chamber.

Fig. 2 is a schematic exploded view of the embodiment of the hydraulic oil temperature rise and discharge device of the pneumatic tool chamber.

Fig. 3 is a schematic cross-sectional view showing the embodiment of the hydraulic oil temperature rise and discharge device of the pneumatic tool chamber.

Fig. 4 is a schematic exploded view of the embodiment of the hydraulic oil temperature rise and discharge device of the pneumatic tool chamber.

Fig. 5 is a schematic exploded view of another embodiment of the hydraulic oil temperature rise and pressure relief device of the present pneumatic tool chamber.

Figure 6 is a schematic cross-sectional view of the embodiment of the hydraulic oil temperature rise and pressure relief device of the present pneumatic tool chamber.

Figure 7 is a schematic cross-sectional view of the embodiment of the hydraulic oil temperature rise and discharge device of the pneumatic tool chamber.

Figure 8 is the implementation of the hydraulic oil temperature rise and pressure relief device of the pneumatic tool chamber Example cross-sectional view IV.

Figure 9 is a cross-sectional view of the embodiment of the hydraulic oil temperature rise and discharge device of the pneumatic tool chamber.

Figure 10 is a cross-sectional view of the embodiment of the hydraulic oil temperature rise and discharge device of the pneumatic tool chamber.

Figure 11 is a schematic cross-sectional view of the embodiment of the hydraulic oil temperature rise and discharge device of the pneumatic tool chamber.

Figure 12 is a cross-sectional view of the embodiment of the hydraulic oil temperature rise and pressure relief device of the present pneumatic tool chamber.

Hereinafter, the embodiment of the hydraulic oil temperature rise and pressure relief device of the pneumatic tool chamber of the present invention will be further described with reference to the related drawings. In order to facilitate the understanding of the present embodiment, the same components are denoted by the same symbols.

Referring to FIGS. 1-7, the components of the pneumatic tool 1 are generally included in a main body 10, and include a wind drive mechanism 2, a deflation mechanism 3, a power shaft mechanism 4, and an oil chamber mechanism 5. The wind-driven mechanism 2 is driven by the high-pressure gas introduced from the air inlet 12 of the press-fitting structure 11 of the main body 10, and is connected to the air-discharging mechanism 3 and the oil chamber mechanism 5 at both ends of the wind-driven mechanism 2, wherein the oil chamber mechanism The front end is connected to the power shaft mechanism 4, and is rotated by the power shaft mechanism 4 to lock the workpiece (not shown), and the air deflation mechanism 3 can be damped by the oil chamber mechanism 5 when the power shaft mechanism 4 reaches the torque setting value. The wind drive mechanism 2 stops driving the oil chamber mechanism 5.

The pneumatic tool chamber hydraulic oil temperature rise and pressure relief device of the present invention is provided in the oil chamber mechanism 5 and the power shaft mechanism 4 described above. The power shaft mechanism 4 is connected to the oil chamber mechanism 5 and includes a power shaft 41 and a shaft seat 42. The oil chamber mechanism includes an oil chamber cylinder 51, an oil storage cylinder 52, a front end cover 53, a rear end cover 54, and a lock group 55. By the composition of the above-mentioned components, when the hydraulic oil of the pneumatic tool rises in temperature, the expansion amount of the hydraulic oil is timely eliminated according to the movement stroke, thereby avoiding fearless energy consumption.

The shaft seat 42 is disposed on the oil storage cylinder body 52, and one end thereof is connected to the power shaft 41. The shaft seat 42 includes a set of connecting portions 421 and a plurality of oil-removing blades 43. The sleeve portion 421 is selectively formed on the front end or the rear end of the shaft seat 42, and a recessed portion 4211, 4211' and a smoothing portion 4212, 4212' are partially looped on the outer surface of the sleeve portion 421, 421'. (as shown in Figures 4~8)

The oil chamber cylinder 51 has an accommodating space 511 that penetrates in the axial direction. (skills)

The oil storage cylinder 52 is disposed in the accommodating space 511 of the oil chamber cylinder 51 and includes a chamber 521 and a receiving hole 522. The chamber 521 is axially formed in the oil storage cylinder body 52 to provide the shaft seat 42 and the receiving hole 522 is axially formed at one end of the oil storage cylinder body 52. In practice, the receiving holes 522, 522' are selectively formed at the front or rear end of the oil storage cylinder 52 and correspond to the positions of the socket portions 421, 421' (as shown in Fig. 5).

The front end cover 53 is disposed in the accommodating space 511 of the oil chamber cylinder 51 and abuts against the front end of the oil storage cylinder 52 to restrict the chamber 521 and the accommodating space 511. The cross section of the front end. The front end shaft hole 531 and a front end oil passage 532 are included. The front end shaft hole 531 is formed in the front end cover 53 in the axial direction, and the power shaft 41 is provided. The front end cover 53 has one end communicating with the front end shaft hole 531, and the other end is corresponding to the front end oil passage 532 at a position corresponding to the receiving hole 522. In implementation, the front end oil passage 532 can be selectively or omitted corresponding to the position of the accommodating hole 522. Corresponding to the position of the socket section 421, the cross section of the front end oil passage 532 is selectively closed by the socket section 421.

The rear end cover 54 is disposed in the accommodating space 511 of the oil chamber cylinder 51 and abuts against the rear end of the oil storage cylinder 52 to restrict the storage chamber 52 of the oil storage cylinder 52 and the housing space of the oil chamber cylinder 51. Section 511 back end. A rear axle hole 541 and a rear oil passage 542 are included. The rear end shaft hole 541 is axially formed through the rear end cover 54 , and the rear end cover 54 has one end communicating with the rear end shaft hole 541 and the end oil passage 542 , and the rear end oil passage 542 is at the other end and the receiving hole 522 ′. correspond. In implementation, the rear end oil passage 542 can be selectively or omitted corresponding to the position of the receiving hole 522'. Corresponding to the position of the socket portion 421', the cross section of the end oil passage 542 is selectively closed by the socket portion 421 (as shown in Fig. 5).

The blocking group 55 is disposed in the receiving holes 522, 522' of the oil storage cylinder body 52, and is selectively closed to the front end oil passage 532 (the rear end oil passage 542) by the hydraulic oil pressure in the chamber 521. . The locking group 55 includes a resilient member 551 and a push block 552. One end of the elastic member 551 abuts against the bottom of the receiving hole 522, and the other end pushing the pushing block 552 abuts against the front end cover 53 or the rear end cover 54.

Therefore, the above is a preferred embodiment of the pneumatic tool chamber hydraulic oil temperature rise and pressure relief device, the introduction of various components and assembly methods, The operating characteristics of the embodiment of the present invention are further described as follows: First, the oil chamber mechanism 5 is connected to the wind drive mechanism 2 at the rear end cover 54. When the wind-driven mechanism 2 is pushed by the high-pressure gas introduced from the pressing structure 11 of the main body 10, the synchronous interlocking oil chamber mechanism 5 rotates, so that the hydraulic oil in the chamber 521 pushes the oil-removing blade 43 of the power shaft mechanism 4. The linkage shaft 42 and the power shaft 41 rotate to provide a user to lock the workpiece by the power shaft 41.

Normally, the volume of the hydraulic oil in the chamber 521 is maintained at a preset interval. Therefore, when the oil chamber mechanism 5 interacts with the power shaft mechanism 4, the hydraulic oil pressure in the chamber 521 cannot cause the locking group 55 to lose the locking ability. The hydraulic oil is concentrated in the chamber 521 at the time. On the contrary, when the hydraulic oil in the chamber 521 is caused by the interaction between the oil chamber mechanism 5 and the power shaft mechanism 4, and the temperature of the hydraulic oil rises, the volume of the hydraulic oil itself expands due to heat, so that the oil chamber mechanism 5 and When the power shaft mechanism 4 is actuated, its pressure naturally increases, and the locking group 55 can be pushed up to lose the locking ability.

After the temperature of the hydraulic oil in the chamber 521 rises, the oil chamber mechanism 5 rotates to push the power shaft mechanism 4 to act, and at the same time, the additional pressure and the amount of expansion of the hydraulic oil due to the temperature rise are released according to the stroke. For example, when the oil reservoir body 52 is in the stroke region acting on the power shaft mechanism 4 (as shown in FIG. 8, the timing of driving the oil-removing blade 43,), the front end cover 53 front end oil passage 532 (or the rear end cover 54) One end of the rear end oil passage 542) is located in the smooth portion 4212 of the shaft seat 42 such that the front end oil passage 532 (or the rear end oil passage 542) is closed, so that the hydraulic oil in the chamber 521 cannot enter the front end oil passage 532 (or End oil passage 542). The hydraulic oil accumulated in the front end oil passage 532 is also Failure to recirculate the chamber 521 (as shown in Figure 9) avoids dispersion of hydraulic oil pressure within the chamber 521. After the oil storage cylinder 52 continues to rotate, the oil storage cylinder 52 does not continue to act on the power shaft mechanism 4 due to the rotation relationship. At this time, the front end cover 53 front end oil passage 532 (or the rear end cover 54, rear) The end oil passage 542) is also arbitrarily displaced to the recessed portion 4211 of the shaft seat 42 (4211', as shown in Figs. 10 and 11). At this time, the hydraulic oil in the chamber 521 can pass through the recessed area 4211 (4211'). The front oil passage 532 (or the rear oil passage 542) pushes the push block 552 of the top lock group 55 to compress the elastic member 551, and the accommodating hole 522 is used as the hydraulic oil to properly discharge the pressure chamber. The pressure within 521 and eliminate the amount of expansion of the hydraulic oil. After the temperature of the hydraulic oil returns, the hydraulic oil remaining in the accommodating hole 522 is pushed back into the chamber 521 by the return of the blocking group (as shown in Fig. 12).

As described above, the pneumatic tool chamber hydraulic oil temperature rise and pressure relief device of the present invention can automatically hydraulic pressure oil in the pressure relief chamber 521 in the non-acting stroke section of the oil storage cylinder body 52 and the power shaft mechanism 4, The front end oil passage 532 (or the rear end oil passage 542) passes through the receiving hole 522 (522'). The volume expansion of the hydraulic oil in the chamber 521 due to the temperature rise is avoided, which causes a fearless driving load, and ensures that the pressure change in the chamber 521 can be maintained in a predetermined interval to improve the stability of the pneumatic tool actuation.

The above description is only for the preferred embodiment of the present invention, and is intended to clarify the features of the present invention, and is not intended to limit the scope of the present embodiment, and the average variation made by those skilled in the art according to the present creation. And changes known to those skilled in the art should still be covered by this creation. range.

4‧‧‧Power shaft mechanism

41‧‧‧Power shaft

42‧‧‧ shaft seat

421‧‧‧ Sockets

4211‧‧‧ recessed area

4212‧‧‧Smooth zone

43‧‧‧ oil blade

52‧‧‧ oil storage cylinder

521‧‧‧ chamber

522‧‧‧ accommodating holes

53‧‧‧ front end cover

531‧‧‧ front axle hole

532‧‧‧ front end oil circuit

54‧‧‧Back end cover

541‧‧‧ Rear axle hole

542‧‧‧Back end oil circuit

55‧‧‧Locking group

551‧‧‧Flexible components

552‧‧‧ push block

Claims (6)

A pneumatic tool chamber hydraulic oil temperature rise and pressure relief device is disposed in the pneumatic tool, comprising: an oil chamber mechanism, comprising at least: an oil chamber cylinder having an axially through receiving space, and The rear end of the accommodating space is provided with a rear end cover; an oil storage cylinder body is disposed in the accommodating space and abuts against the rear end cover, the oil storage cylinder body is axially inserted through a chamber, and The front end of the oil storage cylinder body is provided with a receiving hole in the axial direction; a front end cover is disposed in the accommodating space to limit the cross section of the front end of the chamber and the accommodating space, and the front end cover is axially inserted through a front end shaft The hole, and the corresponding hole position, is provided with a front end oil passage connecting the front end shaft hole; a blocking group is disposed in the receiving hole, and is selectively closed by the hydraulic oil pressure in the chamber. One end of the front oil passage; a power shaft mechanism connected to the oil chamber mechanism, comprising at least: a power shaft extending through the front end shaft hole at one end; a shaft seat disposed at the chamber, one end and the power shaft Connecting, the front end of the axle seat is formed with a set of connecting sections, and the connecting section is The distal end position corresponding to the oil passage, and a recessed area is provided and a smooth region to the outer surface of the sheathing section local loop, and selectively closing the front end of the passage. The pneumatic tool chamber hydraulic oil temperature rise and discharge device according to claim 1, wherein the receiving hole is a blind hole. The pneumatic tool chamber hydraulic oil temperature rise and pressure relief device according to claim 2, wherein the lock group comprises an elastic member and a push block; the elastic member has one end abutting against the bottom of the receiving hole, and the other end is pushed. The push block is topped so that the push block can selectively abut against one end of the front end oil passage. A pneumatic tool chamber hydraulic oil temperature rise and pressure relief device is disposed in the pneumatic tool, comprising: an oil chamber mechanism, comprising at least: an oil chamber cylinder having an axially through receiving space, and The front end of the accommodating space is provided with a front end cover; an oil storage cylinder body is disposed in the accommodating space, and is abutted against the front end cover, the oil storage cylinder body is axially inserted through a chamber, and the oil storage body The rear end of the cylinder body is provided with a receiving hole in the axial direction; a rear end cover is disposed in the accommodating space to limit the cross section of the chamber and the rear end of the accommodating space, and the rear end cover is axially penetrated and provided An end shaft hole, and a corresponding rear hole oil passage is disposed at a position corresponding to the rear hole hole; a lock group is disposed in the receiving hole and is subjected to hydraulic oil pressure in the chamber, and Selectively closing one end of the rear oil passage; a power shaft mechanism is coupled to the oil chamber mechanism, and includes at least: a power shaft extending through the front end cover at one end; and a shaft seat disposed at the chamber, one end Connected to the power shaft, The rear end of the sleeve seat is formed with a set of connecting portions, and the sleeve portion corresponds to the position of one end of the rear end oil passage, and a concave portion and a smooth region are partially disposed on the outer surface of the sleeve portion, and Sexually close the back end of the oil circuit. The pneumatic tool chamber hydraulic oil temperature rise and discharge device according to claim 4, wherein the receiving hole is a blind hole. The pneumatic tool chamber hydraulic oil temperature rise and pressure relief device according to claim 5, wherein the lock group comprises an elastic member and a push block; the elastic member has one end abutting against the bottom of the receiving hole, and the other end is pushed. The push block is topped so that the push block can selectively abut against one end of the rear end oil passage.