TWM448355U - Pneumatic tool - Google Patents

Description

Pneumatic tool

This creation is about the technical field of pneumatic tools, especially a pneumatic tool that uses a hydraulic pulse generator instead of a conventional clutch to avoid sloshing moments.

In the traditional industrial technology field, the pneumatic torque tool is a very widely used hand tool. It mainly uses the circulation of high pressure air between the intake and the exhaust to drive the air motor in the pneumatic tool to achieve the output torque. The effect is that the torque output by the pneumatic tool can be used to lock and loosen the bolts. The traditional pneumatic torque tool is the most criticized, that is, there is no torque adjustment function, so it is not easy to control the output. The value of the torque is often caused by slipping or insufficient torque when accidentally.

Therefore, pneumatic tool manufacturers add torque adjustment devices and clutches to pneumatic tools to solve the aforementioned problems. The conventional clutch installed in the pneumatic tool usually uses the restoring force of the spring to achieve the function of adjusting the torque and the instantaneous clutch. When the force feedback from the working end is greater than the restoring force of the spring, the spring will be further compressed, so that the pneumatic motor of the pneumatic tool can no longer drive the working end of the pneumatic tool.

Although the aforementioned spring structure can make the pneumatic tool achieve the function of adjusting the torque and the instantaneous clutch, when the pneumatic tool is disengaged from the transmission, it will be shaken due to its own inertia, and the degree of shaking is proportional to the torque outputted by the pneumatic tool. Such swaying is a great burden on the operator's hand using the pneumatic tool for a long time on the assembly line, especially for the wrist joint, which often affects the work efficiency due to fatigue of the hand.

The reason is that the creator is concerned with the lack of swaying of the above-mentioned pneumatic tools and the inconvenience of easy fatigue when using the hand. In the spirit of perseverance and the purpose of excellence, the enthusiasm is actively researching and improving, and long-term research and improvement. The efforts and experiments finally developed and designed this creation.

The main purpose of this creation is to solve the above problems and to provide a pneumatic tool that uses a hydraulic pulse generator instead of a conventional clutch to avoid sloshing moments of clutching.

In order to achieve the above object, the present invention mainly comprises a casing; a pneumatic transmission unit installed in the casing, the pneumatic transmission unit comprising an air inlet fixed to the rear end of the casing and connected to a high-pressure gas source. a connector, and a touch switch group and a air motor sequentially mounted in the housing, wherein the touch switch group selectively introduces high pressure gas into the air motor; and is installed in the housing and is mounted by the air motor a driving oil pressure pulse generator; and a torque output unit axially connected to the oil pressure pulse generator, the torque output unit includes a speed reduction mechanism connected to the oil pressure pulse generator, and a connection body The torque output device of the speed reduction mechanism is configured to rotate a locking member such as a bolt and a nut by the torque output device.

This creation only uses the oil pressure in the oil pressure pulse generator to gradually absorb the force feedback from the torque output unit, when the torque output unit feedback When the force is equal to the oil pressure in the oil pressure pulse generator, the air motor can no longer drive the oil pressure pulse generator. At the same time, the touch switch group automatically blocks the high pressure air and stops the air motor. The gradual stop method can really improve the sloshing caused by the inertia of the conventional pneumatic tool clutching moment, and achieve the purpose of stable operation.

The above and other objects and advantages of the present invention will become more apparent from the detailed description and the accompanying drawings.

Of course, the present invention is allowed to differ in some of the parts, or the arrangement of the parts, but the selected embodiments are described in detail in the present specification, and the construction thereof is shown in the drawings.

This creation relates to a pneumatic tool that uses a hydraulic pulse generator to replace a conventional clutch to avoid sloshing moments of clutching. Please refer to the first to second figures, which mainly include a housing (10), a a pneumatic transmission unit (20) installed in a rear portion of the casing (10), an oil pressure pulse generator (30) installed in the front portion of the casing (10) and driven by the pneumatic driving unit (20), and A torque output unit (40) axially coupled to the oil pulse generator (30).

Referring to the second and third figures, the pneumatic transmission unit (20) includes an air inlet joint fixed to the rear end of the casing (10) and connected to a high-pressure gas source (not shown) ( 21), and a touch switch group (22) and a air motor (23) sequentially mounted in the housing, wherein the touch switch group (2) 2) The high pressure gas can be selectively introduced into the air motor (23). The air motor (23) is coaxially provided with a wind impeller (231), and the wind impeller (231) is radially provided with a plurality of blades (232); the wind impeller (231) is concentrically directed toward the oil pressure pulse The generator (30) extends a drive shaft (233). When the touch switch group (22) introduces high-pressure gas into the air motor (23) and acts on the blade (232), the wind impeller (231) and the transmission shaft (233) can be simultaneously rotated, and the drive shaft (233) is further utilized. Driving the oil pressure pulse generator (30). In the preferred embodiment of the present invention, the air motor (23) is a combination of structures that utilizes a two-cylinder structure transmission, thereby having the advantages of low noise and fast torque climb speed.

Referring to the second to fourth figures, the hydraulic pulse generator (30) includes a cylinder (31) screwed in the casing (10), and the cylinder (31) is formed with a cylinder The section is a runway-like chamber (311). An impeller (32) disposed in the chamber (311) and a transmission cover (33) fixed to the end surface of the cylinder (31) for limiting the impeller (32), the transmission cover (33) being coaxially extended A sleeve (331) is provided, and the sleeve (331) is tightly sleeved on the free end of the transmission shaft (233) to drive the cylinder (31) to rotate. The impeller (32) is provided with two blades (321) which are radially reciprocable with respect to the impeller (32), and the two blades (321) are located on the same diameter of the impeller (32). When the cylinder (31) rotates, the oil pressure in the cylinder (31) will rotate through the blades (321) to drive the impeller (32). The impeller (32) is concentric in the direction of the torque output unit (40) A force output shaft (322) for driving the torque output unit (40) is extended, and a free end of the output shaft (322) is formed with a gear portion (323).

Referring to the second and fourth to fifth figures, the torque output unit (40) includes a set of planet arms (41) disposed at the free end of the output shaft (322), the planet arms (41) The upper system is equidistantly rotated with a plurality of planetary gears (411), and each of the planetary gears (411) is respectively meshed with the gear portion (323) of the output shaft (322) to form a speed reduction mechanism capable of driving for deceleration driving. . A transmission shaft (412) is concentrically extended on the planetary boom (41). The free end of the drive shaft (412) is concentrically extended with a coupling post (413) having a substantially polygonal cross section. A bevel gear (42) connected to the free end of the drive shaft (412). The bevel gear (42) is concentrically extended with a sleeve (421), and the sleeve (421) is coaxially formed with a regular polygonal hole (422) corresponding to the binding post (413), and the binding post ( 413) The system is placed in the regular polygonal hole (422) to rotate the bevel gear (42) in synchronization with the drive shaft (412). a torque output device (43) connected to the bevel gear (42) and driven by the bevel gear (42), by which the torque output device (43) can be used to tighten or loosen the bolt or under a certain torque condition Nuts.

As long as the oil pressure in the oil pressure pulse generator (30) is used to gradually absorb the force feedback from the torque output unit (40), when the torque output unit (40) feedbacks the force equal to the oil pressure pulse generation At the moment of oil pressure in the device (30), the air motor (23) can no longer drive the oil pressure pulse. At the same time, the touch switch group (22) will automatically block the high-pressure air, so that the air motor (23) stops, and by gradually stopping, the inertia of the conventional pneumatic tool can be surely improved due to inertia. Shaking occurs to achieve stable operation.

The above description of the embodiments is intended to be illustrative of the present invention and is not intended to limit the scope of the present invention.

From the above detailed description, those skilled in the art can understand that the present invention can achieve the foregoing objectives, and no similar publications are found in similar processes or products, which have already met the requirements of the Patent Law, and have patented according to law. Application.

10‧‧‧shell

20‧‧‧Pneumatic drive unit

21‧‧‧Intake joint

22‧‧‧Touch switch group

23‧‧‧Air motor

231‧‧‧Wind impeller

232‧‧‧ blades

233‧‧‧ drive shaft

30‧‧‧Hydraulic pulse generator

31‧‧‧Cylinder

311‧‧ ‧ room

32‧‧‧ Impeller

321‧‧‧ leaves

322‧‧‧Output shaft

323‧‧‧ Gear Department

33‧‧‧Drive cover

331‧‧‧ casing

40‧‧‧Torque output unit

41‧‧‧ Planetary boom

411‧‧‧ planetary gear

412‧‧‧ drive shaft

413‧‧‧ binding column

42‧‧‧Umbrella gear

421‧‧‧ casing

422‧‧‧Rectangle hole

43‧‧‧Torque output device

The first picture is a three-dimensional appearance of the creation.

The second picture is a cross-sectional view of the creation.

The third figure is an exploded view of the created pneumatic transmission unit.

The fourth figure is an exploded view of the artificial oil pulse generator.

The fifth figure is an exploded view of the torque output unit of the present invention.

10‧‧‧shell

20‧‧‧Pneumatic drive unit

30‧‧‧Hydraulic pulse generator

40‧‧‧Torque output unit

Claims (10)

A pneumatic tool mainly comprises: a casing; a pneumatic transmission unit installed in the casing, the pneumatic transmission unit comprising an air inlet connector fixed at a rear end of the casing and connected to a high-pressure gas source And a touch switch group and a air motor sequentially mounted in the housing, wherein the touch switch group selectively introduces high pressure gas into the air motor; and is mounted in the housing and driven by the air motor An oil pressure pulse generator; and a torque output unit axially connected to the oil pressure pulse generator, the torque output unit includes a speed reduction mechanism connected to the oil pressure pulse generator, and a connection to the deceleration The torque output device of the mechanism can rotate the locking members such as the bolt and the nut by the torque output device. The pneumatic tool according to the first aspect of the invention, wherein the air motor is coaxially provided with a wind impeller, and the wind impeller is radially provided with a plurality of blades; the wind impeller is concentrically directed toward the oil pressure pulse. The generator extends a drive shaft. The pneumatic tool of claim 2, wherein the hydraulic pulse generator comprises a cylinder that is screwed in the housing, wherein a cylinder is formed in the cylinder; The impeller and a transmission cover fixed on the end surface of the cylinder for limiting the impeller, the transmission cover is coaxially provided with a set The sleeve is tightly sleeved on the free end of the drive shaft to drive the cylinder to rotate; the impeller is provided with two blades, and the two blades are located on the same diameter of the impeller. The impeller and the output shaft of the driving torque output unit are concentrically extended in the direction of the torque output unit. A pneumatic tool according to the third aspect of the invention, wherein the section of the chamber is a racetrack and the blade of the oil pulse generator is reciprocally movable relative to the impeller thereof. The pneumatic tool of claim 3, wherein the free end of the output shaft of the hydraulic pulse generator is formed with a gear portion. The pneumatic tool according to claim 5, wherein the torque output unit comprises a set of planetary arms disposed at a free end of the output shaft, the planetary arms being equidistantly rotated with a plurality of planetary gears, and Each of the planetary gear trains meshes with the gear portion of the output shaft, respectively, to constitute the speed reduction mechanism. The pneumatic tool according to claim 6, wherein the planetary arm frame is concentrically extended with a transmission shaft, and the free end of the transmission shaft is concentrically extended with a combined column having a cross section and a positive multilateral line; An bevel gear disposed at a free end of the transmission shaft, the bevel gear system concentrically extending with a sleeve coaxially formed with a complementary polygonal hole corresponding to the coupling post, and the coupling column is accommodated In the regular polygonal hole, the bevel gear rotates synchronously with the transmission shaft. A pneumatic tool according to claim 1, 2, 3 or 4, wherein the pneumatic motor is a structural combination that is driven by a two-cylinder structure. A pneumatic tool according to claim 5, wherein the pneumatic motor is a structural combination that is driven by a two-cylinder structure. The pneumatic tool of claim 6, wherein the air motor is a structural combination that is driven by a two-cylinder structure.