JP5478642B2 - Fluid-driven peristaltic device - Google Patents

Description

  The present invention relates to a fluid-driven peristaltic device, and more particularly, a simple method in which a peristaltic cam is reciprocated by a pair of parallel rods reciprocally moved by a rotating cam body that rotates via a fin body that rotates by the force of a fluid, and a motor or the like is not used It relates to a novel improvement for obtaining a peristaltic device which is actuated by a mechanism.

Conventionally, this type of peristaltic mechanism used depends on, for example, electric power, hydraulic power, and wind power as a power source, but all of them use a mechanism such as a link or a crank and a motor, and are large and complicated. Mechanism.
As a typical example of the conventional configuration, for example, a configuration of a peristaltic mechanism in a rain apparatus shown in Japanese Patent Laid-Open No. 2009-136714 can be given.

That is, in FIG. 15 and FIG. 16, the rain device 10 includes a rotation driving means 22 using a motor and a four-bar rotation chain that converts the rotation of the rotation driving means 22 into a peristaltic movement (swinging movement) of the nozzle 50. The power transmission means 60 constituted by the lever crank mechanism, and a catch tray that is disposed at a position that deviates from the center position of the peristaltic range (maximum deflection angle of the reciprocating angular motion) of the nozzle 50 and receives a part of the water discharged from the nozzle 50 The power transmission means 60 is configured such that the length of the crank of the lever crank mechanism can be changed.
Note that FIG. 17 shows a state in which the nozzle 50 is rotated left and right by the rotational operation of the power transmission means 60 to change the fluid ejection direction.

JP 2009-136714 A

Since the conventional peristaltic device is configured as described above, the following problems exist.
That is, in the case of the configuration of Patent Document 1 shown in FIGS. 15 to 17 described above, the power transmission means 60 for swinging the nozzle 50 requires the motor 22 and also swings the nozzle 50 by transmitting power. Therefore, it has been difficult to meet a demand for a downsized peristaltic mechanism for a nozzle that does not require a motor.

  A fluid-driven peristaltic device according to the present invention is rotatably provided inside a cylindrical main body case, and has a rotating cam body that is cylindrical at one end and has a rotating cam surface, and is fixed and angled within the rotating cam body. A fin body having a plurality of fins, a cylindrical joint flange provided at one end of the main body case, and a cylindrical peristaltic cam surface provided rotatably on the outer periphery of the other end of the rotating cam body A swing cam body, a pair of first and second parallel rods located between the rotary cam surface and the swing cam surface and on the outer periphery of the rotary cam body, and a swing provided at the other end of the main body case A cam presser, and anti-friction means provided between the swing cam presser and the swing cam presser, and the fin and the rotating cam rotate by fluid supplied from the joint flange side. Together with each parallel When the rod reciprocates linearly, the sliding cam body swings clockwise and counterclockwise, and the anti-friction means includes a ball bearing, a roller bearing, a perfect sphere, and a polytetrafluoroethylene coating. The peristaltic cam body is provided with a discharge nozzle for peristaltic discharge of the fluid, and according to the shape of the peristaltic cam surface. The peristaltic angle of the peristaltic cam body can be changed, and the rotary cam body and the fin body are connected via a keyway and a key. , Determined by the first axial length of the rotating cam surface of the rotating cam body, wherein the first axial length does not exceed the second axial length of the peristaltic cam surface, and The joint flange is Performs holding of the serial rotary cam member, said coupling flange to be able to change the shape and size of the coupling flange on the kind of the fluid is a configuration that is detachably attached to the main body casing.

Since the fluid-driven peristaltic device according to the present invention is configured as described above, the following effects can be obtained.
That is, a rotating cam body that is rotatably provided inside a cylindrical main body case and that has a cylindrical rotating cam surface at one end, and a fin body that has a plurality of fins that are fixed and angled within the rotating cam body. A cylindrical joint flange provided at one end of the main body case, a cylindrical peristaltic cam body provided on the outer periphery of the other end of the rotary cam body so as to be axially rotatable, and the rotary cam body A pair of first and second parallel rods positioned between the surface and the peristaltic cam surface and on the outer periphery of the rotary cam body, a peristaltic cam presser provided at the other end of the main body case, and the peristaltic cam Anti-friction means provided between the body and the peristaltic cam pressing body, and the fin body and the rotating cam body are rotated by the fluid supplied from the joint flange side, and the parallel rods are reciprocated directly. To move The swinging cam body can swing clockwise and counterclockwise, it is possible to achieve a swinging of the nozzle by the force of the fluid only in size and weight by.
Further, the anti-friction means is made of any one of a ball bearing, a roller bearing, a perfect sphere, and a coating film of polytetrafluoroethylene, whereby smooth rotation of the peristaltic cam body can be obtained.
Further, since the peristaltic cam body is provided with a discharge nozzle for peristally discharging the fluid, the discharge nozzle can be directly attached to the peristaltic cam body, and a compact fluid-driven peristaltic device is obtained. Can do.
Further, since the swing angle of the swing cam body can be changed according to the shape of the swing cam surface, the swing angle of the discharge nozzle can be freely changed.
Further, since the rotating cam body and the fin body are connected via a keyway and a key, the rotating cam body and the fin body can be easily and reliably incorporated.
The swing angle of the peristaltic cam body is determined by the first axial length of the rotary cam surface of the rotary cam body, and the first axial length is the second axial length of the peristaltic cam surface. By making it not exceed, the peristaltic angle of the water discharge nozzle can be made free.
The joint flange is detachably provided on the body case so as to hold the rotating cam body and to change the shape and size of the joint flange according to the type of the fluid. Thus, it is possible to discharge various kinds of fluids only by changing the shape of the joint flange.

It is sectional drawing which shows the fluid drive type peristaltic apparatus by this invention. It is sectional drawing which shows the principal part of FIG. It is a side view which shows the rotation cam body of FIG. It is a side view which shows the rotation cam body and the peristaltic cam body of FIG. FIG. 5 is an exploded view of FIG. 4. It is a top view of the rotating cam body of FIG. It is a top view of the peristaltic cam body of FIG. It is operation | movement explanatory drawing of the principal part of FIG. It is explanatory drawing which shows rotation and a peristaltic motion of the rotating cam body and peristaltic cam body of FIG. It is a top view which shows the fin body of FIG. It is a left view of FIG. It is a disassembled perspective view of the peristaltic device of FIG. It is a perspective view which shows the state which connected the discharge nozzle to the peristaltic apparatus of FIG. FIG. 14 is a plan view of FIG. 13. It is a block diagram which shows the conventional peristaltic apparatus. FIG. 16 is a front view of FIG. 15. It is explanatory drawing which shows the peristaltic movement of the nozzle of FIG.

  The present invention relates to a fluid drive type peristaltic device in which a peristaltic cam is perturbed by a pair of parallel rods reciprocally moved by a rotating cam body that rotates via a fin body that rotates by the force of a fluid, and a peristaltic motion is performed by a simple mechanism that does not use a motor. The purpose is to provide.

Hereinafter, preferred embodiments of a fluid-driven peristaltic device according to the present invention will be described with reference to the drawings.
In addition, the same code | symbol is attached | subjected and demonstrated to a part the same as that of a prior art example, or an equivalent part.
In FIG. 1, what is indicated by reference numeral 11 is a cylindrical main body case of the fluid-driven peristaltic device 10, and one end 11a of the main body case 11 is made of liquid, gas, powder or the like. A cylindrical joint flange 13 for supplying the fluid 12 to the inside is detachably provided via a bolt 14.

A rotating cam body 15 having a cylindrical shape as a whole is rotatably provided in the main body case 11, and a rotating cam surface 15b of a predetermined cam lead is formed on one end 15a side of the rotating cam body 15, On the end 15d side, a peristaltic cam body 17 having a cylindrical shape as a whole and having a peristaltic cam surface 16 of a predetermined cam lead is provided so as to be slidable independently of the pipe feeding portion 15e of the rotary cam body 15. Yes.
A ring-shaped swing cam presser body 19 is fixed to the other end 11b of the main body case 11 via a bolt 18 between the swing cam body 17 and the swing cam presser body 19. A number of round spheres 20 are arranged in a ring shape as a friction reducing means for smooth movement of the cam body 17 and for maintaining the peristaltic cam body 17 at the center of the main body case 11 at all times. The anti-friction means 20 is not limited to the perfect sphere, but a ball bearing, roller bearing, or a polytetrafluoroethylene coating film employed as Teflon (registered trademark) can also be used.

  A pair of first and second parallel rods 25 and 26 having a rod shape are provided at the outer peripheral position of the rotary cam body 15 and between the rotary cam surface 15b and the swing cam surface 16. The parallel rods 25 and 26 are arranged so as to be slidably contacted with each other via the contact portion 15A, and are pressed by the rotating cam surface 15b by the constant rotation of the rotating cam body 15 in one direction. In order to push, the peristaltic cam body 17 is configured to reciprocate.

  A fin body 30 is provided inside the rotary cam body 15 so as to rotate integrally with the rotary cam body 15, and a bowl-shaped key 32 formed on the rear end 31 side of the fin body 30 is provided. The rotary cam body 15 is fitted in a counterbore key groove 33 formed at the rear end.

  2 is an enlarged view of the joint flange 13, the rotary cam body 15, and the fin body 30 described above. FIG. 3 shows the first cam upper point A and the lower cam point B of the rotary cam surface 15b of the rotary cam body 15. , The second parallel rods 25 and 26 are in sliding contact with each other and are disposed at symmetrical positions (that is, positions where the phases are different by 180 °) with respect to the center of the rotating cam. The first parallel rod 25 is located at the cam lower point B when it is located at.

  FIG. 4 shows a state where the peristaltic cam body 17 is slidably mounted on the pipe feeding part 15e of the rotating cam body 15, and FIG. 5 shows a state where only the peristaltic cam body 17 is detached from the pipe feeding part 15e. The sliding cam body 17 is configured to be able to swing in the left-right direction C independently of the pipe feeding portion 15 e of the rotating cam body 15.

FIG. 6 is a plan view of the rotating cam body 15, and the length between the cam upper point A and the cam lower point B of the rotating cam surface 15 b is set to the first axial length L 1.
FIG. 7 is a plan view of the peristaltic cam body 17, and the peristaltic cam surface 16 is formed with projections 17a projecting along the axial direction, and a pair of cam lower points C are formed on both sides of the projection 17a. In addition, a pair of cam upper points B are formed corresponding to each cam lower point C.

Between the cam lower point C and the cam upper point B of the peristaltic cam surface 16, a first axial length L1 which is the same as the first axial length L1 of the rotating cam body 15 is set, and the peristaltic cam The axial length in the plane of the entire surface 16 is set as the second axial length L2.
Accordingly, the peristaltic angles + θ, −θ (shown in FIG. 9) of the peristaltic cam body 17 are the dimensions of the first axial length L1 of the rotating cam body 15 for performing the projecting operation of the parallel rods 25, 26. The absolute condition is that the first axial length L1 of the rotating cam body 15 does not exceed the dimension of the second axial length L2 of the peristaltic cam body 17.

FIG. 8 shows the operational relationship among the rotating cam body 15, the pipe feeding portion 15e, the peristaltic cam body 17, and the parallel rods 25 and 26. Each of the parallel rods 25 and 26 is a pair as shown in FIG. Although it is a structure, only one side is shown in FIG.
The parallel rods 25 and 26 are configured such that they can move only along a straight line in a certain direction by guides 11a and 11c (shown in FIG. 1) such as ribs or recesses formed on the inner surface of the main body case 11. ing.

As the rotary cam body 15 rotates, the parallel rods 25 or 26 are pushed and moved by a distance La, and a rotational motion is given to the peristaltic cam body 17 by the moved distance.
As shown in FIG. 3, the parallel rods 25 and 26 move alternately. Therefore, the reciprocating motion of the parallel rods 25 and 26 causes the peristaltic cam body 17 to swing in the distances La and Lb. Will occur.
Further, since the distance of the second axial length L2 (FIG. 7) of the peristaltic cam body 17 is longer than the distance of the first axial length L1 of the rotating cam body 15, the rotating cam body 15 makes one rotation. Even in this case, the peristaltic cam body 17 is configured not to rotate once.

FIG. 9 shows a peristaltic state of the reciprocating clockwise and counterclockwise reciprocation of the peristaltic cam body 17 due to the rotation of the revolving cam body 15 in the above-mentioned revolving cam body 15, the parallel rods 25 and 26 and the peristaltic cam body 17. .
That is, when the rotating cam body 15 is rotated counterclockwise in the state of FIG. 9A, the first parallel rod 25 is pushed rightward by the rotating cam surface 15b as shown in the state of FIG. The sliding cam body 17 slides on the sliding cam surface 16 as shown in (A) from 0 ° to (B) by the swinging angle + θ.

Further, when the rotary cam body 15 rotates in the same direction and enters the state (C), the first parallel rod 25 moves to the left in the opposite direction to the above, and the peristaltic cam body 17 returns to the 0 ° position.
Further, when the rotating cam body 15 rotates in the same direction, as shown in the (D) state, the first parallel rod 25 moves in the same direction as the (C) state, and the first parallel rod 25 moves in the swing cam surface. 16, the peristaltic cam body 17 is swung by a peristaltic angle −θ, and the revolving cam body 15 is continuously rotated in the same direction. It is configured to reciprocate in an angle range of −θ.

Although only one first parallel rod 25 is shown in FIG. 9, the second parallel rod 26 is actually disposed at a position 180 degrees out of phase with the first parallel rod 25 as shown in FIG. Then, in conjunction with the rotational operation of the rotary cam body 15, the parallel rods 25 and 26 are alternately reciprocated in parallel, whereby the peristaltic cam body 17 is moved.
Further, the peristaltic angle θ of the peristaltic cam body 17 can be changed by variously changing the shape of the peristaltic cam surface 16.

10 and 11 specifically show the fin body 30 in FIG. 1, and four fins 30a having a long plate shape from the rear end 31 to the front end 31a shown in FIG. Each fin 30a is formed with an angle α by twisting from the rear end 31 side to the front end 31a side, and when the fluid 12 (for example, water) is supplied from the joint flange 13 as shown in FIG. The fluid pressure of the fluid 12 is applied to each fin 30a, a force in the rotational direction is applied to each fin 30a, and the fin body 30 rotates.
As the fin body 30 rotates, the rotating cam body 15 also rotates in the same direction, and the peristaltic cam body 17 is oscillated through the parallel rods 25 and 26 as described above. The rotational speed of the rotating cam body 15 can be changed by making the shape of the fin 30a, the flow velocity and the flow rate of the fluid 12 variable, and the rotational speed of the rotating cam body 15 changes the speed of the peristaltic cam body 17. The peristaltic speed can be changed.

  The fluid-driven peristaltic device 10 is shown in an exploded manner as shown in FIG. 12, and when the discharge nozzle 50 is connected as shown by the one-dot chain line in FIG. 1 at the tip of the peristaltic cam body 17, As shown in FIG. 14, the discharge nozzle 50 is oscillated in the range of the oscillating angles + θ and −θ in accordance with the oscillating movement of the oscillating cam body 17.

  According to the present invention, the discharge nozzle can be swung only by the fluid pressure of the fluid without using a motor or the like, and the fluid can be swung and discharged even in a place where there is no power source.

DESCRIPTION OF SYMBOLS 10 Fluid drive type peristaltic device 11 Main body case 11a One end 11b Other end 11c Guide 12 Fluid 13 Joint flange 14 Bolt 15 Rotating cam body 15a One end 15b Rotating cam surface 15d Other end 16 Peristaltic cam surface 17 Peristaltic cam body 18 Bolt 19 Peristaltic cam presser 20 round spheres (anti-friction means)
25, 26 First and second parallel rods 30 Fin body 30a Fin 31 Rear end 31a Front end 32 Key 33 Key groove 50 Discharge nozzle A Cam upper point B, C Cam lower point L1 First axial direction length L2 Second axial direction length

Claims (7)

  A rotating cam body (15) which is rotatably provided inside a cylindrical main body case (11) and has a cylindrical rotating cam surface (15b) at one end thereof, and an angle fixed in the rotating cam body (15) ( a) a fin body (30) having a plurality of fins (30a) provided with α), a cylindrical joint flange (13) provided at one end (11a) of the main body case (11), and the rotating cam body A peristaltic cam body (17) having a peristaltic cam surface (16) provided on the outer periphery of the other end of (15) so as to be axially rotatable, the rotary cam surface (15b), and the peristaltic cam surface (16) And a pair of first and second parallel rods (25, 26) located on the outer periphery of the rotary cam body (15) and a swing provided on the other end (11b) of the main body case (11) A cam presser body (19), and anti-friction means (20) provided between the sliding cam presser body (17) and the swing cam presser body (19), from the joint flange (13) side. The fin body (30) and the fin body (30) are fed by the supplied fluid (12). And the rotary cam body (15) rotates and the parallel rods (25, 26) reciprocate linearly, whereby the peristaltic cam body (17) swings clockwise and counterclockwise. Drive type peristaltic device.   The fluid-driven peristaltic device according to claim 1, wherein the anti-friction means (20) comprises any one of a ball bearing, a roller bearing, a perfect sphere, and a coating film of polytetrafluoroethylene.   3. The fluid driven peristaltic device according to claim 1, wherein the peristaltic cam body (17) is provided with a discharge nozzle (50) for peristally discharging the fluid (12).   4. The fluid driven peristaltic device according to claim 1, wherein a peristaltic angle of the peristaltic cam body (17) can be changed according to the shape of the peristaltic cam surface (16).   The fluid according to any one of claims 1 to 4, wherein the rotating cam body (15) and the fin body (30) are connected via a keyway (33) and a key (32). Drive type peristaltic device.   The swing angle (+ θ, −θ) of the swing cam body (17) is determined by the first axial direction length (L1) of the rotary cam surface (15b) of the rotary cam body (15), and the first axial direction. 6. The fluid driven peristaltic according to claim 1, wherein the length (L1) does not exceed the second axial direction length (L2) of the peristaltic cam surface (16). apparatus.   The joint flange (13) holds the rotary cam body (15) and can change the shape and size of the joint flange (13) according to the type of the fluid (12). The fluid-driven peristaltic device according to any one of claims 1 to 6, wherein said main body case (11) is detachably provided.

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