KR20200062295A - Booster - Google Patents

Abstract

The boosting device 10 includes a driving unit 12 that is driven under energization and a boosting mechanism 14 that is connected to the driving unit 12 and boosts and outputs a pressure fluid. The pressure increasing mechanism 14 is connected to the drive shaft 24 of the drive source 18 and has a rotating body 30 having an inclined surface portion 68, and is movably installed along the axial direction toward the rotating body 30 It consists of four pistons 32a-32d. Then, the pistons 32a to 32d are sequentially and continuously pressed in the axial direction by the inclined surface portion 68 of the rotating body 30, whereby the pressure fluid is compressed in the pressure increasing chamber 48 to increase pressure. The pressure fluid boosted in the pressure increasing chamber 48 is discharged from the output port 64 through the discharge passages 66a and 66b by opening the check valve 36 for exhaust.

Description

Booster

The present invention relates to a pressure increasing device capable of increasing the pressure fluid supplied and outputting it.

Conventionally, a pressure increasing device for increasing pressure by outputting a pressure fluid such as gas or air is known. For example, in the pressure increasing device disclosed in International Publication No. 2013/183586, the rotating shaft is rotatably supported inside the housing. In addition, the rotating shaft is mounted so that the inclined plate is inclined at a predetermined angle with respect to the axial direction. Moreover, the piston provided so that the inside of the housing can be stroked is engaged with the outer peripheral side of the inclined plate. Then, by rotating the rotating shaft, the inclined plate is rotated, and the piston is pressurized along the axial direction by the rotational motion to reciprocate, whereby the pressure fluid in the housing is compressed by the piston and output to the outside.

Recently, since space saving is required when installing the pressure intensifying device in a manufacturing line or the like, a more compact pressure intensifying device is required.

A general object of the present invention is to provide a pressure increasing device capable of miniaturization and weight reduction with a simple configuration.

The present invention, having a body having a supply port and an output port, in the boosting device for increasing the pressure fluid supplied from the supply port to output from the output port,

A driving source installed in the body and driven to rotate under energization,

A rotating body connected to the rotation axis of the drive source and having an inclined surface portion inclined with respect to the axis of the rotation axis,

A plurality of pistons that are installed to be movable in the axial direction with respect to the pressure increasing chamber of the body, and whose ends abut against the inclined surface portion

Equipped with,

It is characterized in that the plurality of pistons are sequentially pressed in the axial direction by the inclined surface portion under the rotating action of the rotating body, whereby the pressure fluid is compressed and increased in the pressure increasing chamber.

According to the present invention, a body constituting the pressure increasing device is provided with a driving source for rotationally driving under energization, and a rotating body having an inclined surface inclined with respect to the axis of the rotation axis is connected to the rotation axis of the driving source, and the pressure increasing chamber of the body A plurality of pistons are provided so as to be movable in the axial direction, and their ends are in contact with the inclined surface of the rotating body.

Then, as the rotating body rotates under the driving action of the driving source, a plurality of pistons are sequentially pressed along the axial direction by the inclined surface portion, and the pressure fluid is compressed in the pressure increasing chamber by the piston to increase pressure and output from the output port.

As a result, a plurality of pistons are installed on the body, and the structure is configured to continuously move in the axial direction by the inclined surface portion of the rotating body, so that the pressure fluid can be compressed and boosted with a simple configuration. Light weight can be achieved.

1 is an external perspective view of a pressure intensifying device according to an embodiment of the present invention.
Fig. 2 is an exploded perspective view of the pressure increasing device shown in Fig. 1.
3 is a cross-sectional view taken along line III-III of FIG. 1.
4 is a cross-sectional view taken along line IV-IV in FIG. 1.
5 is a cross-sectional view along the line VV in FIG. 3.
6 is a cross-sectional view taken along line VI-VI in FIG. 3.
7 is a cross-sectional view taken along line VII-VII in FIG. 3.
8 is a cross-sectional view taken along line VIII-VIII in FIG. 3.
9 is a cross-sectional view taken along line IX-IX in FIG. 3.

1 to 9, the pressure increasing device 10 includes a driving unit 12 and a pressure increasing mechanism 14 connected to the driving unit 12 and capable of increasing the pressure fluid to be output. The driving unit 12 and the pressure increasing mechanism 14 are arranged to be in a linear shape along the axial direction (arrows A and B).

The driving unit 12 includes, for example, a cross-section rectangular casing (body) 16 and a driving source 18 housed inside the casing 16. The casing 16 is formed in the shape of a user cylinder whose one end side (arrow A direction) is closed, and the other end side (arrow B direction) serving as the pressure increasing mechanism 14 side is opened, and the four corners are shafted. Four screw holes 20 penetrating along the directions (arrows A and B) are formed, and a connecting bolt 42 to be described later is inserted and screwed.

Further, at one end of the casing 16, a control unit 22 (see FIGS. 1 and 2) for driving control of the drive source 18 to be described later is provided.

The drive source 18 is, for example, a motor that is rotationally driven under energization, and is stored along the axial direction (arrows A and B) of the casing 16, and the drive shaft 24 is a pressure increasing mechanism 14 It is arranged to be on the side (arrow B direction) and is inserted into the first housing 26 of the pressure increasing mechanism 14 described later.

The pressure increasing mechanism 14 is provided in the first and second housings (body) (26, 28), the rotating body (30) accommodated inside the first housing (26), and the second housing (28). Four pistons 32a to 32d which are accommodated and movably installed in the axial direction, and four intake check valves (first switching valves) 34 that open and close with the movement of the pistons 32a to 32d, and It includes an exhaust check valve (second switching valve) 36 and a cover member (body) 38 that closes an end of the second housing 28.

The first and second housings 26 and 28 are, for example, respectively formed in a rectangular cross-section like the casing 16, and the first housing 26 is the casing 16 in the drive unit 12. It is connected to the other end of the, the second housing 28 is connected to the other end of the first housing (26). And, at the four corners of the first and second housings 26 and 28, through holes 40a and 40b are formed, respectively, and connection bolts 42 that are screwed into the screw holes 20 of the casing 16 are inserted. do.

Inside the first housing 26, a sectional circular space 44 is formed in the center of which the rotating body 30 and the pistons 32a to 32d are accommodated, and the first through the outside air port 46 is formed. It is in communication with the outside of the housing 26.

On the other hand, in the second housing 28, four pressure increasing chambers 48 in which the pistons 32a to 32d are accommodated are formed, and the pressure increasing chamber 48 has a predetermined diameter with respect to the center of the second housing 28. On this same circumference, and also formed to be equally spaced from each other along the circumferential direction, it penetrates along the axial direction (arrows A and B) in a circular cross section. In other words, each pressure-increasing chamber 48 is arranged to be spaced apart from each other by 90 degrees as viewed in the axial direction of the second housing 28, as shown in FIG.

Then, at one end of the pressure increasing chamber 48 serving as the first housing 26 side (arrow A direction), rod covers 50 for movably supporting the pistons 32a to 32d are respectively provided.

Further, in the second housing 28, communication paths 52a and 52b for communicating the pressure-increasing chambers 48 to each other are formed at positions between the one end portion and the other end portion. The communication paths 52a and 52b are formed by extending two in the direction perpendicular to the axis of the second housing 28, and as shown in FIG. 5, one communication path 52a extending in the vertical direction The other communication path 52b extending in the horizontal direction is formed in a substantially cross shape by crossing at the center of the second housing 28, and the two communication paths 52a are provided in two pressure increasing chambers 48 arranged diagonally. , 52b). In addition, the two communication paths 52a and 52b each have one end penetrating to the outside of the second housing 28 and communicating with the outside.

In addition, in the second housing 28, as shown in Figs. 6 and 7, a pair of each of which is directed to the respective pressure increasing chambers 48 at the other end serving as the cover member 38 side (arrow B direction). The first and second valve chambers 54 and 56 are installed.

The first and second valve chambers 54 and 56 are arranged to be parallel to each other with the axis of the pressure increasing chamber 48 interposed therebetween, and extend along the axial direction (arrows A and B) to form the second housing. It penetrates to the other end of (28) and communicates with the pressure increasing chamber (48). In the first valve chamber 54, an intake check valve 34 to be described later is stored, and in the second valve chamber 56, an exhaust check valve 36 to be described later is stored.

In addition, a first plug 60 having a communication hole 58 is mounted at the other end of the first valve chamber 54, and through this communication hole 58, a supply passage 98a of the cover member 38 to be described later. , 98b), and a second plug 62 that closes the second valve chamber 56 is attached to the second valve chamber 56.

Further, in the vicinity of the other end of the second housing 28, an output port 64 through which the pressure fluid boosted by the pressure increasing mechanism 14 is discharged is formed, and the output port 64 is the second housing 28 ) Is connected to two discharge passages 66a and 66b extending in an orthogonal direction to the axis of the second housing 28 while the pipe (not shown) is opened and connected to the outer surface.

As shown in Fig. 8, one discharge passage 66a extends in the vertical direction, and the other discharge passage 66b extends in the horizontal direction to cross approximately the cross shape, and the four second valves Each of the threads 56 is in communication. In other words, the two discharge passages 66a, 66b communicate with each other, and also, both ends of the discharge passages 66a, 66b communicate with the second valve chamber 56, respectively, thereby providing four second valve chambers 56. ) Are communicating with each other. Then, the pressure fluid boosted in the second valve chamber 56 flows through the discharge passages 66a and 66b to the output port 64.

The rotating body 30, as shown in Figures 2 to 4, for example, is formed in a circular cross-section, one end of which is formed in a plane shape orthogonal to the axis and the drive shaft of the drive source 18 in the center ( 24) is connected. In addition, the other end of the rotating body 30 has a planar inclined surface portion 68 that is inclined by a predetermined angle with respect to the axis.

The inclined surface portion 68 is disposed in the space 44 of the first housing 26 so as to face the four pistons 32a to 32d, and is closest to the cover member 38 side (arrow B direction). It has a bottom portion 72 closest to the crown portion 70 and the driving portion 12 side (arrow A direction), and is formed to connect the crown portion 70 and the bottom portion 72 in a flat shape.

Then, the rotating body 30, in the space 44 of the first housing 26, rotates at a predetermined rotational speed in a predetermined direction together with the driving shaft 24 under the driving action of the driving source 18.

The pistons 32a to 32d are composed of a rod portion 74 formed in a substantially constant diameter, and a head portion 76 connected to the other end portion of the rod portion 74, and the boosting chamber of the second housing 28 It is housed in the (48) respectively and is movably installed along the axial direction (arrows A and B). The rod portion 74 is formed such that one end thereof is formed in a substantially hemispherical shape so as to contact the inclined surface portion 68 of the rotating body 30, and also includes a rod cover that closes one end of the pressure increasing chamber 48 ( 50).

The head portion 76 is formed in a circular shape in cross section, and is coaxially connected to the other end portion of the rod portion 74 by a fastening bolt 78, and the wear ring 80 and the piston packing 82 installed on its outer circumferential surface It is installed to slide on the inner circumferential surface of the pressure increasing chamber 48 through.

In addition, a return spring 84 is interposed between the head portion 76 and the other end of the pressure increasing chamber 48 in the pistons 32a to 32d, and the drive portion 12 is always driven by the elastic force of the return spring 84. ) Side (arrow A direction). As a result, the pistons 32a to 32d have one end of the rod portion 74 protruding from the second housing 28 toward the first housing 26 side (arrow A direction) by a predetermined length, and the rotating body 30 ) Is in contact with the inclined surface portion 68.

6, the intake check valve 34 is installed to be movable along the axial direction (arrows A and B) in the first valve chamber 54 of the second housing 28, as shown in FIG. The cover member 38 side (arrow B direction) has a valve portion 86 whose diameter is enlarged. In addition, a first spring (spring) 88 is interposed between the valve portion 86 and one end portion of the first valve chamber 54 in the intake check valve 34 and covered by the elastic force. It is pressed toward the member 38 side and the valve portion 86 abuts the first plug 60. Thereby, the communication hole 58 of the 1st plug 60 is closed by the valve part 86.

The exhaust check valve 36 is formed in substantially the same shape as the intake check valve 34 and is provided to be paired, axially (arrows) with respect to the second valve chamber 56 of the second housing 28. A, B direction) is installed to be movable, and on the side of the driving unit 12 (arrow A direction) has a valve portion 90 whose diameter is enlarged. That is, in the exhaust check valve 36, the valve portion 90 is disposed differently from each other along the axial direction with the valve portion 86 of the intake check valve 34.

Further, a second spring (spring) 92 is interposed between the valve portion 90 and the second plug 62 in the exhaust check valve 36, and the drive portion 12 side ( By pressing in the direction of arrow A), the valve portion 90 abuts against the boundary portion between the pressure-increasing chamber 48, and communication between the pressure-increasing chamber 48 and the second valve chamber 56 is blocked.

The cover member 38 is, for example, formed in a cross-section square shape having substantially the same cross-section as the first and second housings 26 and 28, and four inserts into which four connecting bolts 42 are inserted at the four corners. A hole 94 is formed.

Then, the four connecting bolts 42 are inserted into the insertion holes 94 of the cover member 38, the through holes 40a, 40b of the first and second housings 26, 28, and then the casing 16 ) Is screwed with the screw hole (20). Thereby, while the cover member 38 is connected to the other end of the second housing 28, the first and second housings 26, 28 and the casing 16 are connected in a straight line along the axial direction. .

Further, on the outer surface of the cover member 38, a supply port 96 through which a pressure fluid is supplied is formed, and the supply port 96 is in the same direction as the output port 64 of the second housing 28. The piping (not shown) is connected by opening on the outer surface.

9, the supply port 96 communicates with two supply passages 98a and 98b extending in a direction perpendicular to the axis of the cover member 38, and one supply passage 98a is vertical Four first valve chambers 54 extending in the direction, and the other supply passage 98b extends in the horizontal direction and crosses each other in a substantially cross shape, and through the communication hole 58 of the first plug 60 ), respectively (see Fig. 6).

In other words, the two first passages 98a and 98b communicate with each other, and the first first valve chamber 54 is respectively connected to the first valve chamber 54 in the vicinity of both ends of the supply passages 98a and 98b. 54) are in communication with each other.

Then, the pressure fluid supplied from the supply port 96 is supplied to the first valve chamber 54 from the communication hole 58 through the supply passages 98a and 98b, thereby pressurizing the intake check valve 34 It is introduced into the pressure-increasing chamber 48.

The pressure increasing device 10 according to the embodiment of the present invention is basically configured as described above, and its operation and effect will be described next.

First, by supplying a pressure fluid from a not-shown pressure fluid supply source to the supply port 96, the pressure fluid passes through the two supply passages 98a and 98b to the communication holes 58 of the first plug 60, respectively. To flow. The pressure fluid pressurizes the intake check valve 34 toward the driving unit 12 side (arrow A direction), thereby resisting the elastic force of the first spring 88 so that the intake check valve 34 moves and the pressure fluid A is introduced into each pressure-increasing chamber 48 through four first valve chambers 54, respectively.

Further, at the same time, the drive shaft 24 rotates by energizing the drive source 18 of the drive unit 12, and the rotating body 30 rotates in a predetermined direction, thereby contacting the inclined surface portion 68 of the rotating body 30. Each of the pistons 32a to 32d is pressurized along the axial direction (arrows A and B), respectively, and begins to move.

At this time, the pistons 32a to 32d are always pressurized along the axial direction toward the rotating body 30 side (arrow A direction) by the elastic force of the return spring 84, so that the rod portion 74 is inclined surface portion ( 68). Therefore, when the pistons 32a to 32d are in contact with the bottom portion 72 of the inclined surface portion 68, they are moved to the drive portion 12 side (arrow A direction), and on the other hand, to the crown portion 70. In the abutting state, the pistons 32a to 32d are moved to the cover member 38 side (arrow B direction).

Thus, for example, in the state shown in FIG. 4, the piston 32a resists the elastic force of the return spring 84 by the crown 70 of the rotating body 30, and the cover member 38 side (arrow) B direction), and the pressure fluid in the pressure intensification chamber 48 is compressed and increased by the head portion 76. On the other hand, the piston 32c is pressed against by the elastic force of the return spring 84 because it abuts against the bottom 72 of the rotating body 30, and is closest to the driving part 12 side (arrow A direction). It has moved.

In addition, since the pistons 32b and 32d are in contact with an intermediate portion between the crown portion 70 and the bottom portion 72 in the inclined surface portion 68, the aforementioned piston 32a and piston 32c ).

As described above, as the rotating body 30 rotates, the inclined surface portion 68 which abuts the pistons 32a to 32d continuously changes from the crown portion 70 to the bottom portion 72, thereby allowing the pistons 32a to 32d. The pressure fluid introduced into the pressure intensification chamber 48 is compressed and pressure-increased whenever it moves to the cover member 38 side by side and continuously along the circumferential direction and continuously in the axial direction. In other words, the inclined surface portion 68 of the rotating body 30 inclined with respect to its axis is continuously pressed against each of the pistons 32a to 32d, and furthermore, the inclined surface portion 68 rotates to rotate the shaft. It reciprocates along the direction.

Then, the pressure fluid compressed under the movement of the pistons 32a to 32d flows from the pressure intensifying chamber 48 to the second valve chamber 56, and the check valve 36 for exhausting by the pressure fluid intensified to a predetermined pressure Is pressed against the elastic force of the second spring 92 and is in a valve open state.

When the exhaust check valve 36 moves to the cover member 38 side (arrow B direction), the second valve chamber 56 communicates with the discharge passages 66a, 66b, and the pressure-increased pressure fluid discharges ( It is discharged from the output port 64 through 66a, 66b). This pressure-increased pressure fluid can be sent to and stored in, for example, an accumulator tank, and can be used by being supplied to an actuator or the like from the accumulator tank.

That is, as the rotating body 30 rotates, the four pistons 32a to 32d move sequentially and continuously along the axial direction, thereby compressing the pressure fluid in the pressure increasing chamber 48 in turn, and By sequentially opening the check valves 36 for exhausting from the pressure-increasing chamber 48 that has reached the pressure, it can be discharged from the output port 64 to the outside.

As described above, in the present embodiment, a driving unit 12 driven under energization and a pressure increasing mechanism 14 connected to the driving unit 12 and capable of increasing the pressure fluid to be output are provided, and the pressure increasing mechanism 14 The first housing 26 is housed inside the rotating body 30, the second housing 28 is housed in the axially movable four pistons (32a ~ 32d) and the piston, and the piston ( 32a to 32d), there are four intake check valves 34 and exhaust check valves 36 that open and close with movement, and a cover member 38 that closes the ends of the second housing 28. .

Then, the rotating body 30 is rotated under the driving action of the driving unit 12, and each piston 32a to 32d is sequentially and continuously reciprocated along the axial direction by the inclined surface unit 68, thereby allowing the piston ( 32a to 32d) may be compressed by compressing the pressure fluid supplied into the pressure increasing chamber 48 in which it is accommodated.

As a result, the four pistons 32a to 32d are arranged in the circumferential direction, and the rotating body 30 having the inclined surface portion 68 is rotated under the driving action of the driving portion 12, so that the pistons 32a to 32d are rotated. By adopting a configuration capable of continuously moving in the axial direction, the pressure increasing device 10 capable of compressing and increasing the pressure fluid can be reduced in size and weight.

In other words, since the four pistons 32a to 32d are provided in the radial direction inner side than the outer circumferential surface of the rotating body 30, the size can be reduced without being enlarged outward in the radial direction.

In addition, by making the end portion of the rod portion 74 in the pistons 32a to 32d substantially hemispherical, even when the rotating body 30 is rotated, the sloping inclined portion 68 is always reliably and stably. Since it can abut, it becomes possible to stably move the pistons 32a to 32d along the axial direction.

In addition, a rotating body 30 having an inclined surface portion 68 is provided on an end surface facing the pistons 32a to 32d, and the rotating bodies 30 are rotated under a driving action of the driving portion 12, thereby circumferentially rotating each other. Each of the pistons 32a to 32d arranged to be spaced apart may be sequentially pressed to move in the axial direction. Therefore, it is possible to increase and increase the pressure by compressing the pressure fluid in turn and continuously with each of the pistons 32a to 32d.

Moreover, in the above-described pressure intensifying device 10, with respect to the configuration provided with a pressure increasing mechanism 14 having four pistons 32a to 32d, four intake check valves 34 and an exhaust check valve 36 Although described, it is not limited to this, and if the quantity of the pistons 32a to 32d and the quantity of the intake check valve 34 and the exhaust check valve 36 are configured to correspond, the quantity is not particularly limited. .

In addition, it is needless to say that the pressure increasing device according to the present invention is not limited to the above-described embodiments, and various configurations can be adopted without departing from the gist of the present invention.

Claims (6)

A booster having a body (16, 26, 28, 38) having a supply port (96) and an output port (64), and boosting the pressure fluid supplied from the supply port (96) to output from the output port (64) In the device (10),
A driving source (18) installed on the body (16, 26, 28, 38) and rotatingly driven under energization,
A rotating body 30 connected to the rotational axis 24 of the drive source 18 and having an inclined surface portion 68 inclined with respect to the axis of the rotational axis 24,
A plurality of pistons (32a ~ 32d) are installed to be movable in the axial direction with respect to the pressure-increasing chamber (48) of the body (16, 26, 28, 38), the end is in contact with the inclined surface portion (68)
It includes,
The plurality of pistons 32a to 32d are sequentially pressed in the axial direction by the inclined surface portion 68 under the rotational action of the rotating body 30, thereby compressing the pressure fluid in the pressure increasing chamber 48 and Pressure increasing device characterized in that the pressure is increased. The method according to claim 1,
The plurality of pistons 32a to 32d are installed along a circumferential direction on a circumference centering on the axis of the body 16, 26, 28, 38, and have a diameter greater than the outer circumferential surface of the rotating body 30 A pressure intensifying device which is arranged inside the direction. The method according to claim 1 or 2,
The piston (32a ~ 32d), the pressure increasing device characterized in that the end contacting the rotating body 30 is formed in a hemispherical shape. The method according to claim 1,
In the pressure increasing chamber (48), a switching mechanism is provided that communicates with the supply port (96) when the pressure fluid is supplied, and communicates with the output port (64) when the pressure fluid is discharged. Booster. The method according to claim 4,
The switching mechanism includes a first switching valve 34 that is opened only when the pressure fluid is supplied,
Second switching valve (36) that opens only when the pressure fluid is discharged
Intensification device, characterized in that consisting of. The method according to claim 5,
The first and second switching valves (34, 36) are seated under the elastic action of the springs (88, 92), respectively, and are closed, and the pressure increasing device is characterized in that it is opened under pressure by the pressure fluid.

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