TWM465995U - Pneumatic motor and intake valve set thereof - Google Patents

Description

Air motor and its intake valve

This creation relates to a pneumatic tool, in particular a pneumatic motor and its intake valve block.

A general air motor is mounted inside the pneumatic tool, and the air motor is actuated by introducing a high pressure space, and the pneumatic tool is driven to rotate or translate for repetitive work.

Referring to FIG. 9 , it is a pneumatic motor 70 of the prior art, which comprises a housing 71 and a rotor 72 corresponding to the inside of the housing 71 , an intake valve group 73 and an air intake unit. 74, wherein, as shown in FIG. 10 and FIG. 11, the intake valve block 73 includes an air inlet member 731 and an adjusting member 732. The air inlet member 731 has a fixing hole 7311 extending through the center. Two air inlets 7312 are formed on the upper side of the hole 7311, and a gas guiding groove 7313 is respectively recessed on the front side of the air inlet 731 and the lower edge of the two air inlets 7312. The member 732 is rotatably abutted against the rear side of the air inlet member 731, and an air guiding channel 7321 having an L-shaped cross section is disposed inside the adjusting member 732, and a front side of the adjusting member 732 is opened. An air outlet 7322 that is curved and communicates with the air guiding channel 7321; As shown in FIG. 9 to FIG. 11, a high-pressure gas is introduced into the air intake unit 74, so that the high-pressure gas enters from the adjusting member 732 of the intake valve group 73, and the air outlet 7322 of the adjusting member 732 is switched by adjusting One of the air inlets 7312 of the air inlet 731 is connected to enable the high pressure gas to be driven by the air guiding channel 7321 through the air outlet 7322, the air inlet 7312 and the air guiding groove 7313. The sub-72 rotates, and the other unused air inlet 7312 of the air intake member 731 is used to discharge a portion of the high-pressure gas to prevent the high-pressure gas from generating a back pressure inside the casing 71 to affect the operation of the rotor 72.

When the high-pressure gas enters the adjusting member 732, the high-pressure gas is discharged from the air outlet 7322 along the L-shaped air guiding passage 7321, because the airflow rises and hits the inner wall surface of the adjusting member 732. The adjusting member 732 is slightly urged upward by the force in the horizontal direction, so that the adjusting member 732 and the air inlet member 731 do not closely adhere to each other to generate a slight gap, so that part of the high-pressure gas is overflowed by the small gap. The intake valve group 73 is outside, and does not directly enter the air intake member 731, thus affecting the intake efficiency of the intake valve group 73, so that the high pressure gas cannot be completely introduced into the rotor 72, which is necessary to improve the reinforcement. .

In order to solve the problem that the intake valve group of the existing air motor introduces a small gap and causes a high pressure gas to overflow and introduces a low efficiency of intake air, the main purpose of the present invention is to provide a pneumatic motor and its advancement. The gas valve group is configured to improve the structure of the intake valve block, so that the adjusting member ring is provided with a plurality of air outlet holes, and the plurality of air outlet holes are exhausted to the valve group chamber after the air is uniformly exhausted, so that the adjusting member can be closely attached to the air inlet. And the high-pressure gas is concentrated into the driving rotor to improve the overall intake efficiency.

The technical means used in the present invention is to provide a pneumatic motor comprising: a casing which is internally defined in the axial direction from front to back to form a rotor chamber, a valve chamber and an inlet chamber. a rotor rotatably correspondingly disposed in the rotor chamber; An intake valve group correspondingly accommodates in the rotor chamber and the valve assembly chamber, the intake valve assembly includes: an air intake member, which is a circular block and disposed adjacent to the rotor capacity The air intake member has a front side surface and a rear side surface. The front side of the air inlet member is provided with two air guiding ports which are connected to the rear side and are curved and curved. The front side of the air inlet is respectively recessed with two air guiding grooves connected to the lower edge of the air guiding port, and a rear side of the air inlet member is concavely disposed with a semi-circular arc-shaped exhaust groove at a position different from the air guiding port. The bottom of the air inlet member is provided with two exhaust holes communicating with the exhaust groove; an adjusting member is disposed in the valve assembly chamber and closely abuts against a rear side of the air inlet member, the adjusting member is The column is cylindrical and has a curved arc-shaped discharge port on the front side, and the outlet port has an outer shape corresponding to the air guiding port of the air inlet member, and a curved guide is recessed below the discharge port. a gas inlet, an introduction hole is formed on the rear side of the adjusting member, and a plurality of air outlet holes are arranged on the outer circumference of the adjusting member Each of the air outlets is connectable to the introduction hole to discharge high pressure gas entering the introduction hole; an air intake unit correspondingly coupled to the air inlet chamber of the outer casing, and being connectable to one end of the air intake unit A high pressure air pressure source is introduced to introduce the high pressure gas to the valve chamber and is introduced into the rotor via the intake valve member to drive the rotor to rotate counterclockwise or clockwise.

The technical means used in the present invention is to provide an air intake valve group of a pneumatic motor, comprising: an air intake member, which is a circular block body, the air intake member has a front side and a rear side, The front side of the air inlet member is provided with two air guiding ports which are connected to the rear side and are curved, and are in front of the air inlet member. Two air guiding grooves connected to the lower edge of the air guiding port are respectively recessed, and a semi-circular arc-shaped exhausting groove is recessed in a position different from the side of the air guiding member at the rear side of the air inlet member, and The bottom of the gas member is provided with two venting holes communicating with the venting groove; an adjusting member is closely abutted against the rear side of the air inlet member, the adjusting member has a column shape and a curved arc is arranged on the front side. a discharge port having an outer shape corresponding to the air guiding port of the air inlet member, and a curved air guiding groove is recessed below the discharging port, and an introduction is formed on the rear side of the adjusting member The hole has a plurality of air outlet holes in the outer circumference ring of the adjusting member, and each air outlet hole is connected to the introduction hole to discharge the high pressure gas entering the introduction hole.

The air motor and the intake valve group thereof, wherein the adjusting member of the intake valve group comprises an abutting portion, an air outlet portion and an air inlet portion, wherein the abutting portion has a disk shape and the outer shape corresponds to the The abutting portion has a front side surface, and the discharge port and the air guiding groove are disposed on a side surface of the abutting portion, and the air outlet portion and the air inlet portion are integrally connected to the air receiving portion in sequence The introduction hole is disposed at a center of the inlet portion and extends to the outlet portion.

The air motor and the intake valve group thereof, wherein the arc of the air guiding groove of the adjusting member is close to three-quarter arc, and the distribution range of the air guiding groove can cover any air guiding port of the air inlet member at the same time. And the exhaust groove.

The creation utilizes the provided air motor and its intake valve group, and the improved efficiency can be obtained: the adjusting member ring of the intake valve group is provided with a plurality of air outlet holes, so that the high pressure gas enters the adjusting member and is surrounded by the surrounding air. Each of the air outlets is discharged on average, and a horizontal airflow is generated to enable the adjusting member and the air inlet member to be tight Close contact, so that the adjusting member is not affected by the air flow, and there is no slight gap between the adjusting member and the air inlet member, causing the gas to overflow, thereby improving the overall intake efficiency and enabling the high pressure gas to be completely Enter the drive rotor without spilling.

In order to be able to understand in detail the technical features and practical functions of the present invention, and can be implemented in accordance with the contents of the specification, and further illustrated in the preferred embodiment shown in the following figure, the following is a description: the present invention is a pneumatic motor and its advancement. For the gas valve group, please refer to the preferred embodiment of FIG. 1 to FIG. 6, which includes a casing 10, a rotor 20, an intake valve block 30 and an air intake unit 40, wherein: FIG. 1 and FIG. As shown, and defined first, the left side of FIG. 1 is the front side and the right side is the rear side. The housing 10 is tubular in shape and is internally defined in the axial direction from front to back to form a rotor chamber 11 and a valve assembly chamber 12 . And an inlet chamber 13 , and an elongated adjusting rod groove 121 is defined in the outer periphery of the casing 10 corresponding to the valve assembly chamber 12 , as shown in FIG. 6 , and the housing 10 corresponds to the rotor capacity. A plurality of discharge holes 122 are opened in the outer periphery of the rear side of the rear side of the chamber 11. As shown in FIG. 2, the rotor 20 is rotatably disposed in the rotor chamber 11.

As shown in FIG. 2 and FIG. 3, the intake valve block 30 is correspondingly disposed in the rotor chamber 11 and the valve block chamber 12 of the housing 10, and includes an air inlet member 31 and a bearing 32. An adjusting member 33, an adjusting rod 34 and two sealing rings 35; wherein, as shown in FIG. 3, the air inlet member 31 is a circular block and is disposed adjacent to a rear side of the rotor chamber 11, the air inlet The piece 31 has a front side 311 and a rear side surface 312, the air inlet member 31 is centrally disposed with a spindle hole 313 in the center of the front side surface 311, and the rotor 20 is rotatably coupled to the spindle hole 313 by an axis, and is disposed in the spindle hole 313 is provided with two opposite and curved air guiding ports 314. The two air guiding ports 314 are penetrated from the front side surface 311 to the rear side surface 312, and a guiding air is respectively recessed on the lower edges of the two air guiding ports 314. a groove 315, the two air guiding grooves 315 extend upward from the two air guiding ports 314 and form a groove that is curved and surrounds the outer side of the mandrel hole 313, as shown in FIG. The rear side surface 312 of the rear recess 312 is provided with a bearing groove 316 communicating with the spindle hole 313, and the inner diameter of the bearing groove 316 is larger than the inner diameter of the spindle hole 313, and a recess is formed below the bearing groove 316. The exhaust groove 317 is a semi-circular arc shape, and two exhaust holes 318 are formed in the bottom of the air inlet member 31 and communicate with the exhaust groove 317.

As shown in FIG. 4 and FIG. 6 , the bearing 32 is correspondingly disposed on the bearing groove 316 , and the shaft center of the rotor 20 is coupled to the bearing 32 at one end; as shown in FIG. 2 , the adjusting member 33 is disposed. The valve assembly chamber 12 is closely abutted against the rear side surface 312 of the air inlet member 31. As shown in FIG. 3 and FIG. 4, the adjusting member 33 includes an abutting portion 331, an air outlet portion 332, and a feed portion. The air portion 333 and an introduction hole 334 are in the shape of a disk and have an outer shape corresponding to the outer shape of the air inlet member 31, and have a front side surface 3311. The front side surface 3311 is centered on the front side portion 3311 of the abutting portion 331. A locking groove 3312 is formed. A discharge opening 3313 is formed in the upper portion of the locking groove 3312. The outlet 3313 of the adjusting member 33 has an outer shape corresponding to the air guiding port 314 of the air inlet member 31. The outer shape of the fixing groove 3312 is recessed with a curved arc-shaped air guiding groove 3314. The arc of the air guiding groove 3314 is close to three-quarter arc, and the distribution range of the air guiding groove 3314 is Covering either of the air intake members 31 at the same time The air outlet 314 and the air outlet 317 are integrally connected to the rear side of the abutting portion 331 in an orderly manner. The introduction hole 334 is disposed at the center of the air inlet portion 333 and extends. The air outlet portion 332 is provided with a plurality of air outlet holes 3321 and a seal ring groove 3322 located behind each of the air outlet holes 3321 in the outer ring portion of the air outlet portion 332, and the air outlet holes 3321 are connectable to the introduction holes 334, and The high-pressure gas that is discharged into the introduction hole 334 is disposed in the outer periphery of the air inlet portion 333 with a coupling hole 3331 and a sealing ring groove 3332 adjacent to the rear end edge of the air inlet portion 333.

As shown in FIG. 4 and FIG. 6 , the adjusting rod 34 can be coupled to the coupling hole 3331 of the air inlet portion 333 and can be moved along the adjusting rod slot 121 of the outer casing 10 to drive the adjusting member 33 . Rotate to switch direction.

As shown in FIG. 4 and FIG. 6 , the two seal rings 35 are respectively sleeved with a seal ring groove 3322 coupled to the air outlet portion 332 and a seal ring groove 3332 of the air inlet portion 333 , and the seal ring 35 is used for the seal ring 35 . The inside of the valve block chamber 12 is sealed to prevent high pressure gas from overflowing from the valve assembly chamber 12 to the intake chamber 13, resulting in poor intake efficiency.

As shown in FIG. 2, the air intake unit 40 is coupled to the air inlet chamber 13 of the outer casing 10, and a high pressure air source (not shown) is connected to one end of the air intake unit 40 to make the air intake. The unit 40 is capable of directing high pressure gas from the intake chamber 13 to the valve block chamber 12 and is introduced into the rotor 20 via the intake valve member 30 to drive the rotor 20 to rotate counterclockwise or clockwise.

A preferred embodiment of the present invention is shown in FIG. 2 and FIG. 5 to FIG. 8. As shown in FIG. 2 and FIG. 5, the present invention can adjust the intake valve block 30 by rotating the adjusting rod 34 to make the rotor. 20 produces a clockwise or counterclockwise rotation, In this embodiment, high pressure gas is introduced from the air intake unit 40, and the adjustment lever 34 is rotated to the right side of FIG. 5 to switch the intake valve group 30 to the right intake air to allow the rotor 20 to rotate in a clockwise direction. .

As shown in FIG. 6 and FIG. 7 , a cross-sectional state diagram in which high-pressure gas is introduced into the rotor chamber 11 through the valve assembly chamber 12 of the housing 10 of the housing 10 is shown in FIG. The high-pressure gas enters through the introduction hole 334 of the adjusting member 33, and is discharged into the valve assembly chamber 12 from each of the air outlet holes 3321. At this time, as can be seen from FIG. 7, the high-pressure gas is discharged from the discharge port 33 of the adjusting member 33. 3313 enters the air inlet port 314 of the air inlet member 31 on the right side, and introduces high pressure gas into the rotor 20 along the air guiding groove 315 on the right side to rotate the rotor 20 in the clockwise direction.

As shown in FIG. 8, it can be seen from another cross section at the same position that in order to avoid back pressure generated when the rotor 20 rotates, a part of the high pressure gas needs to be discharged, and the high pressure gas is along the air guiding groove 315 located on the left side. The gas guiding port 314 is located on the left side of the air inlet member 31, and the gas is discharged to the exhaust groove 317 of the air inlet member 31 along the air guiding groove 3314 of the adjusting member 33, so that high pressure gas passes through the two exhaust holes 318. Discharge to each of the discharge holes 122 of the housing 10.

Therefore, after the high-pressure gas enters the adjusting member 33, the plurality of air outlets 3321 are simultaneously discharged toward and filled with the valve housing chamber 12, so that the high-pressure gas is simultaneously generated in the horizontal direction toward the discharge port 3313 of the adjusting member 33. The force of the abutting portion 331 of the adjusting member 33 is equivalent to the area of the air inlet member 31, so that the force can force the adjusting member 33 to closely abut against the air inlet member 32 without causing a slight gap. At the same time, high pressure gas can also be concentrated into the gas inlet member 32, thereby improving the overall intake efficiency so that the high pressure gas can enter the rotor 20 completely and without spilling and actuate.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Anyone having ordinary knowledge in the technical field may use the present invention without departing from the technical features of the present invention. Equivalent embodiments of the local changes or modifications made by the technical content disclosed herein are still within the scope of the features of the present invention.

10‧‧‧shell

11‧‧‧Rotor compartment

12‧‧‧Valve chamber

121‧‧‧Adjustment rod slot

122‧‧‧Exhaust hole

13‧‧‧Intake room

20‧‧‧Rotor

30‧‧‧Intake valve group

31‧‧‧Air intake parts

311‧‧‧ front side

312‧‧‧ rear side

313‧‧‧ mandrel hole

314‧‧‧ air inlet

315‧‧‧Gas

316‧‧‧ bearing groove

317‧‧‧Exhaust trough

318‧‧‧ venting holes

32‧‧‧ Bearing

33‧‧‧Adjustment

331‧‧‧Affiliation

3311‧‧‧ front side

3312‧‧‧ card slot

3313‧‧‧Export

3314‧‧‧ Air Guide

332‧‧‧Exhaust department

3321‧‧‧ Vents

3322‧‧‧Seal ring groove

333‧‧‧Intake Department

3331‧‧‧Combination hole

3332‧‧‧Seal ring groove

334‧‧‧Introduction hole

34‧‧‧Adjustment rod

35‧‧‧Seal ring

40‧‧‧Air intake unit

70‧‧‧Air motor

71‧‧‧Shell

72‧‧‧Rotor

73‧‧‧Intake valve group

731‧‧‧Air intake parts

7311‧‧‧Fixed holes

7312‧‧‧Air inlet

7313‧‧‧Air guiding groove

732‧‧‧Adjustment

7321‧‧‧ air guiding channel

7322‧‧‧ air outlet

74‧‧‧Air intake unit

Figure 1 is an external view of a preferred embodiment of the present invention.

Figure 2 is a perspective cross-sectional view of a preferred embodiment of the present invention.

Figure 3 is a front exploded view of the intake valve block of the preferred embodiment of the present invention.

Figure 4 is a rear exploded view of the intake valve block of the preferred embodiment of the present invention.

Figure 5 is a rear elevational view of the preferred embodiment of the present invention.

Figure 6 is a schematic cross-sectional view of the intake air of the preferred embodiment of the present invention.

Figure 7 is a schematic cross-sectional view of the intake air of the preferred embodiment of the present invention.

Figure 8 is a schematic cross-sectional view of the intake air of the preferred embodiment of the present invention.

Figure 9 is a perspective cross-sectional view of a conventional air motor.

Figure 10 is a front exploded view of a prior art intake valve block.

Figure 11 is a schematic cross-sectional view of an intake air of a conventional air motor.

10‧‧‧shell

11‧‧‧Rotor compartment

12‧‧‧Valve chamber

121‧‧‧Adjustment rod slot

13‧‧‧Intake room

20‧‧‧Rotor

30‧‧‧Intake valve group

31‧‧‧Air intake parts

33‧‧‧Adjustment

34‧‧‧Adjustment rod

35‧‧‧Seal ring

40‧‧‧Air intake unit

Claims (6)

A pneumatic motor includes: a casing which is internally defined in the axial direction from front to rear to form a rotor chamber, a valve chamber and an inlet chamber; and a rotor rotatably corresponding thereto Provided in the rotor chamber; an intake valve group correspondingly accommodated in the rotor chamber and the valve assembly chamber, the intake valve assembly includes: an air intake member, which is a circular block And a rear side adjacent to the rotor chamber, the air intake member has a front side and a rear side, and the front side of the air inlet member is provided with two communicating passages to the rear side and being curved. a gas guiding port, and two air guiding grooves connected to a lower edge of the air guiding port are respectively recessed on a front side of the air inlet member, and a semicircle is disposed at a position different from a rear side of the air inlet member An arc-shaped exhaust groove, and two exhaust holes communicating with the exhaust groove at the bottom of the air inlet member; an adjusting member disposed in the valve block chamber and closely abutting the air inlet The rear side of the piece has a column-like shape and a discharge port having a curved shape on the front side, and the discharge is discharged The shape is corresponding to the shape of the air inlet of the air inlet member, and a curved air guiding groove is recessed below the discharge port, and an introduction hole is formed on the rear side of the adjusting member, and the outer circumference of the adjusting member is arranged a plurality of air outlets, each of the air outlets being connectable to the introduction hole for discharging high pressure gas entering the introduction hole; an air intake unit corresponding to the air inlet chamber of the outer casing, and One end of the gas unit is connected to a high pressure air pressure source to introduce high pressure gas. The air inlet chamber is guided to the valve assembly chamber and introduced into the rotor via the intake valve member to drive the rotor to rotate counterclockwise or clockwise. The air motor according to claim 1, wherein the adjusting member of the intake valve group comprises an abutting portion, an air outlet portion and an air inlet portion, the abutting portion has a disk shape and an outer shape corresponding to the inlet The abutting portion has a front side, and the discharge port and the air guiding groove are disposed on a side of the abutting portion, and the air outlet portion and the air inlet portion are integrally connected to the abutting portion On the rear side of the portion, the introduction hole is disposed in the center of the air inlet portion and extends to the air outlet portion. The air motor according to claim 1 or 2, wherein the arc of the air guiding groove of the adjusting member is close to three-quarter arc, and the distribution range of the air guiding groove can cover any guide of the air inlet member at the same time. Air port and the exhaust groove. An air intake valve group of a pneumatic motor includes: an air inlet member, which is a circular block body, the air intake member has a front side surface and a rear side surface, and two sides are provided through the front side of the air inlet member a gas guiding port connected to the rear side and having a curved arc shape, and two air guiding grooves connected to the lower edge of the air guiding port are respectively recessed on the front side of the air inlet member, and the side surface of the air inlet member is different from the air guiding member a venting groove having a semicircular arc shape is recessed in the position of the air guiding port, and two venting holes communicating with the venting groove are disposed at a bottom of the air inlet member; an adjusting member closely abuts the venting groove a rear side of the air inlet member, the adjusting member has a column-shaped shape and a discharge port having a curved shape on the front side, and the shape of the discharge port is corresponding to the air outlet of the air inlet member, and is disposed at the outlet An air guiding groove is formed in the lower side of the adjusting member, and an introduction hole is defined in the rear side of the adjusting member, and a plurality of air outlet holes are arranged in the outer circumference ring of the adjusting member, and the air outlet holes can be connected to the introduction hole to discharge The high pressure gas entering the introduction hole. The air intake valve group of the air motor of claim 4, wherein the adjusting member comprises an abutting portion, an air outlet portion and an air inlet portion, wherein the abutting portion has a disk shape and the shape corresponds to the inlet The abutting portion has a front side, and the discharge port and the air guiding groove are disposed on a side of the abutting portion, and the air outlet portion and the air inlet portion are integrally connected to the abutting portion On the rear side of the portion, the introduction hole is disposed in the center of the air inlet portion and extends to the air outlet portion. The air intake valve group of the air motor according to claim 5, wherein the arc of the air guiding groove of the adjusting member is close to three-quarter arc, and the distribution range of the air guiding groove can cover the air inlet member at the same time. Any air guide and the exhaust slot.