JP2003090290A - Manual type tube pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent local material fatigue of a tube and a degradation in the durability of the tube caused by repeatedly depressing the same part of the manual tube pump, by timely changing a depressed part of an inserting tube. SOLUTION: An inserting tube 13 is arranged along an inner surface of an annular wall 12 in a case 11. A rotating element 15 rotated by a handle 10 is provided in the inside of the inserting tube 13, and supported to the periphery of a rotating element main shaft 14 by a main shaft bearing 21. A part of the tube is depressed by a roller 17 supported to an outer peripheral portion of the rotating element 15 by a roller shaft 16 through a roller bearing 34. At that time, the roller shaft 16 is tilted in regard to the rotating element main shaft 14, and the annular wall 12 is tilted so as to be in parallel with the roller 17. The rotating element 15 adjusts an axial direction fixing position of the main shaft bearing 21 on the rotating element main shaft 14 by changes in the number of washers 24. By this adjustment, a clearance between the roller 17 and the annular wall 12 is changed, thereby changing a depressed part of the inserting tube 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manual tube pump, and more particularly to a tube pump having a light weight and improved usability.

[0002]

BACKGROUND ART A manual tube pump is well known, for example, there is JP-A-8-334087. In addition, the applicant of the present application has previously proposed Japanese Patent Application No. 2000-
Filed No. 336759. FIG. 5 is an axial sectional view of a rotary body main shaft of a manual tube pump showing this structure.
As shown in this figure, an annular wall 2 provided on the case 1
An insertion tube 3 through which an appropriate fluid such as a liquid is passed is disposed along the inside of the
The rotating body 5 is disposed in the inner space of the. The rotator 5 is rotatable around a rotator main shaft 4 whose both ends are supported by the case 1. A roller 7 is rotatably supported on the outer peripheral portion of the rotating body 5 via a roller shaft 6. When the roller 7 rotates together with the rotating body 5, the insertion tube 3 is rotated by crushing a part of the insertion tube 3 so that the insertion tube 3 is inserted. The tube 3 is squeezed in the rotation direction so that the fluid inside is discharged from one end of the insertion tube 3. One of the roller shafts 6 also serves as a handle shaft, and a handle 8 is attached to the handle shaft 8 in parallel with the rotor main shaft 4.

[0003]

By the way, in the case of the above-described prior art example, the insertion tube 3 is always crushed between the annular wall 2 and the roller 7 at the same place repeatedly. For this reason, material fatigue locally occurs in a relatively short time, and this portion may be damaged, which may require replacement of the insertion tube 3, and improvement in durability has been desired.

Further, since the contents of the insertion tube 3 are conveyed only by the rotation of the handle 10, it takes a relatively long time to fill the tires of a vehicle with air using this manual tube pump, for example. become. Therefore, it was also desired to be able to work efficiently in a shorter time. The invention of the present application is intended to realize such requirements.

[0005]

In order to solve the above-mentioned problems, the invention of claim 1 relating to the manual tube pump of the present invention is a case having an annular wall, and is disposed along a part of the inner surface of the annular wall. The inserted tube, a rotating body disposed in a space surrounded by the inserting tube and rotated by a manual handle, and an outer peripheral portion of the rotating body supported via a roller shaft, In a manual tube pump including a roller that rotates together with a rotating body while crushing a part thereof, and a rotating body main shaft that projects from the central portion and rotatably supports the rotating body, the roller and the outer circumference of the roller. It is characterized in that the distance from the inner surface of the annular wall facing the surface is variable.

According to a second aspect of the present invention, in the first aspect, the roller shaft is inclined with respect to the main shaft of the rotating body.

According to a third aspect of the present invention, in the first aspect, the fixed position of the rotating body on the rotating body main shaft is adjustable in the axial direction.

According to a fourth aspect of the present invention, in the above-mentioned first aspect, both ends of the insertion tube are provided with a suction side end and a discharge side end, and a compressed gas-containing cylinder is connected to the suction side end. It is characterized by

According to a fifth aspect of the present invention, in the above-mentioned first aspect, a suction side end portion and a discharge side end portion are provided at both ends of the insertion tube, and one end is provided at the discharge side end portion of the insertion tube. It is characterized in that it is connected to the filling destination via a directional valve.

[0010]

According to the first aspect of the present invention, when the rotating body is rotated, the integrally rotating roller moves while squeezing the insertion tube and squeezes it. Can be discharged to the part. By repeating this for a certain length of time, if the same portion of the insertion tube is repeatedly crushed and local material fatigue occurs, the distance between the roller and the inner surface of the annular wall facing the outer peripheral surface of the roller is changed. . This changes the crushed portion of the insertion tube, so the insertion tube
The life of the device can be extended, and as a result, the durability of the device is improved.

At this time, if the roller shaft is tilted with respect to the main shaft of the rotor as in claim 2, the space between the roller and the inner surface of the annular wall is moved by moving the rotor in the axial direction of the main shaft of the rotor. Can be easily changed. Further, if the fixed position of the rotary body on the rotary body main axis is adjustable in the axial direction as in the third aspect, the movement of the rotary body becomes easy.

According to the invention of claim 4, since a compressed gas-containing cylinder is connected to the suction side end of the insertion tube, the compressed gas is sent from the cylinder into the insertion tube at a high pressure, which is small. The rotating body can be lightly rotated by force and sent out to the filling destination from the end on the discharge side. Therefore, the gas can be filled more quickly than in the case of only manual operation.

According to the invention of claim 5, the discharge side end of the insertion tube is connected to the filling destination via the one-way valve.
Backflow can be prevented during filling. Therefore, it is possible to easily fill and store pressure inside the cylinder or the like having a higher pressure than the suction side.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment will be described below with reference to the drawings. FIG. 1 is a view showing a manual tube pump according to an embodiment with a part cut away from the direction indicated by the arrow X in FIG. 2, FIG. 2 is a sectional view taken along the line 2-2, FIG.
FIG. 6 is a diagram showing adjustment of a gap between a roller and an annular wall. In the present application, directions such as up, down, left and right are based on the illustrated state.

1 and 2, the manual tube pump is formed in a small size as a whole so as to be suitable for carrying, and a case 11 having a circular opening and an annular wall 12 forming the opening are generally omitted. Almost U along the inside of the semi-circular arc
The insertion tube 13 arranged in a character shape, the rotating body 15 disposed in the space surrounded by the insertion tube 13 and rotatably supported around the rotating body main shaft 14, and the rotating body 15
The roller 17 is rotatably supported by the roller shaft 16 on the outer periphery of the roller.

The insertion tube 13 is made of an appropriate material having high elasticity such as synthetic resin, and one end of the insertion tube 13 is attached to a projection 11a which is formed integrally with the case 11 and projects outward. The suction end 18
Is connected to a compressed air cylinder or the like outside the case 11 via a suction side connection tube described later. However, when configured as an air pump that only pumps the outside air, the suction side end 18 may be simply opened to the atmosphere. The other end of the insertion tube 13 is connected to a discharge side end 19 attached to the projection 11b similar to the suction side, and the discharge side end 19 is outside the case 11 and is connected to another discharge side connection tube. It is extended to the outside of the case 11 via and is connected to the filling destination described later.

The distance between the outer peripheral portion of the roller 17 and the annular wall 12 is about twice the wall thickness of the insertion tube 13, and the portion of the insertion tube 13 along the inner surface of the annular wall 12 in a substantially semi-circular shape. The inner peripheral side is inward of the outer periphery of the rotating body 15, substantially coincides with the circle connecting the centers of the roller shafts 16 of the rotating body 15, and the portion of the insertion tube 13 that comes into contact with the roller 17 is the roller 17. Crushed by. Therefore, when the rotating body 15 rotates in the direction of the arrow in FIG. 1 (counterclockwise direction in this embodiment), the roller 17 that rotates together rotates itself and the insertion tube 13 rotates.
Since it rotatably moves along the annular wall 12 while crushing the liquid, the content of the fluid such as liquid or gas in the insertion tube 13 is squeezed from the suction side end 18 side to the discharge side end 19. It is pumped and then discharged from here.

As is apparent from FIG. 2, the case 11 is a substantially cup-shaped member made of an appropriate material having rigidity such as metal, and the center portion of the bottom wall 20 continuous with the annular wall 12 is located at the main shaft of the rotor. 14 penetrates. A pair of main shaft bearings 21 are provided at intervals around the rotary body main shaft 14,
A space between the inner races 22 and 22 is positioned on the rotary body main shaft 14 by a collar 23 and a grip 25. Bottom wall 2
Inner race 2 of main shaft bearing 21 located on the 0 side
2 is positioned between a collar-shaped grip 25 and a plurality of (five in this embodiment) washers 24.
The grip 25 and the bottom wall 20 are welded.

Further, a threaded portion 26 is formed at the tip of the rotary body main shaft 14 configured as a long bolt, and a cap nut 27 is fastened thereto, and the other end side is the surface side (right side in FIG. 2). It is a bolt head 28 for tightening the inner race 22 that constitutes the main shaft bearing 21. The grip 25 is long and outward from the bottom wall 20 (left side in the figure)
Protruding to. The grip 25 is also a part for fixing the manual tube pump, and can be fixed by holding it by hand or by fitting it into a hole provided in another suitable supporting member 29. it can.

The rotating body 15 has a substantially equilateral triangular shape, and is composed of a pair of left and right plate-like members which are parallel to each other in the direction of the rotating body main shaft 14 at intervals, and a roller shaft 16 which is passed between the corresponding vertex portions of the pair of members. A roller 17 is supported around the. The roller shaft 16 is a bolt, which is inserted from an opening 20a formed in the bottom wall 20 and penetrates a pair of disc-shaped members forming the rotating body 15 into a screw 30 at the tip of the nut 31 or the handle 10. It is concluded with.

The handle 10 is one of the roller shafts 16 and is fitted around the specially long one, and the screw 30
It is a collar-shaped member that is prevented from coming off by a nut 31 that is fastened to and functions as a handle for manually rotating the rotating body 15. The extending direction of the handle 10 is opposite to the extending direction of the grip 25 with the rotating body 15 interposed therebetween.

The roller 17 has a cylindrical shape and is rotatably supported around the roller shaft 16 via a roller bearing 34, and an inner race 35 of the roller bearing 34 is fitted around the roller shaft 16 with collars 36 and 3.
Positioned from both sides at 7. The collars 36, 37 are arranged between the pair of rotating bodies 15, and are fixed by the head 38 of the roller shaft 16 configured as a bolt and the handle 10 or the nut 31 fastened to the screw 30 of the roller shaft 16.

The pair of rotating bodies 15, 15 are parallel to each other at a slightly longer distance than the roller 17, and the outer peripheral side is bent in a direction toward the bottom wall 20. The main shaft bearing 21,
Each of the bearing holders 40, 40 of 21 is a rotary body main shaft 1
4 are parallel to each other, and the inner peripheral sides of the rotating bodies 15, 15 are welded to the outer periphery of the bearing holders 40, 40.

As a result of the bending of the outer peripheral side of the rotor 15, the axis L2 of the roller shaft 16 is inclined by an angle θ with respect to the axis L1 of the rotor main shaft 14, and the roller shaft 16 intersects with each other at the portions extending to the left in the figure. Has become. Therefore, the roller 1
The axis of 7 also coincides with L2 and is inclined like the roller shaft 16. Further, the annular wall 12 facing the roller 17 also forms an inclined surface that is inclined substantially parallel to the inner tube 3, and the insertion tube 3 is crushed to the same thickness between the annular wall 12 and the roller 17.

FIG. 3 shows the suction side end 18 and the discharge side end 19.
Shows a structure of a connection tube for the suction side connection tube 41 connected to the suction side end portion 18, and has one end (not shown) connected to the suction side end portion 18 and the other end 42 to a portable compressed air cylinder 43 for the valve 44 thereof. It is designed to connect with. The valve 44 is a known one, and the cap 4
By removing 5 and pushing in and connecting the other end 42, the air compressed in the portable compressed air cylinder 43 is sent from the suction side end 18 into the insertion tube 3.

The discharge side connecting tube 46, one end of which is not shown, is connected to the discharge side end portion 19 is provided with a one-way valve 47, and the other end 48 is pushed and connected to a valve 50 provided on, for example, a tire 49 of a vehicle to connect the one-way valve. 47
Thus, the tire 49 is filled with air while preventing backflow. The other end 48 of the discharge side end portion 19 and the valve 50 are
It has the same structure as the other end 42 of the suction side connection tube 41 and the valve 44.

Next, the operation of this embodiment will be described. As shown in FIG. 2, the grip 25 is fixed to the support member 29,
Or, hold it in your left hand and hold it in place, then use the right hand to handle 10.
The rotary body 15 in the direction of the arrow in FIG. 1 (counterclockwise direction).
When rotated to, the roller 17 rotates and the rotating body 15 rotates.
Since the insertion tube 13 is squeezed and moved by being rotated integrally with the insertion tube 13, the fluid and the like in the insertion tube 13 can be discharged to the discharge side end portion 19.

By repeating this for a long time to some extent, the same portion of the insertion tube 13 is repeatedly crushed and material fatigue locally occurs. When such material fatigue occurs, some of the washers 24 are moved to the bolt head 28 side as shown in FIG.
The axial position on the rotary body main shaft 14 is adjusted to approach the bottom wall 20 side.

In the case of this embodiment, the three washers 24 are moved to the bolt head 28 side, whereby the rotating body 15 is moved axially by the dimension D to the left side of the drawing on the rotating body main shaft 14. To do. In this figure, the solid line is a state after the movement, and at this time, the roller 17 also moves from the initial virtual line position in the axial direction by the dimension D in parallel with the rotary body main shaft 14, so that the interval between the annular wall 12 and the roller 17 is It changes from the initial d1 to d2 and narrows by the difference d3, and the position crushed by the annular wall 12 of the insertion tube 3 and the roller 17 changes. Therefore, the same place where the material is fatigued does not continue to be crushed, and a new portion without material fatigue is crushed, so that the period of use of the insertion tube 13 can be extended correspondingly, and as a result, the durability of the device is improved.

Moreover, if the axial position of the roller 17 is adjusted every time the insertion tube 3 is fatigued, the length of the insertion tube 3 can be increased. The amount of movement of the washer 24 at one time is arbitrary, such as one by one or a random number each time, and the thickness of the washer 24, the total number of sheets used, etc. are arbitrary. Further, by using a coil spring or the like instead of using the washer 24, the axial position of the roller 17 can be continuously changed by adjusting the fastening amount of the nut 27. In this case nut 27
Is not a cap nut but an ordinary one so that the bolt end on the screw 26 side can freely project. By thus providing the axially fixed position adjusting means of the rotary body 15 on the rotary body main shaft 14, the axial movement of the rotary body 15 is facilitated.

Further, if the axis of the roller 17 and the annular wall 12 are inclined so as not to be parallel but to intersect each other, the roller 1 is caused by the axial movement of the rotor 15 on the rotor main shaft 14.
The change in the gap between the inner tube 7 and the annular wall 12 can be increased to make the change in the crushed portion of the insertion tube 13 more remarkable.

Further, as shown in FIG. 3, the suction side end portion 18
When the portable compressed air cylinder 43 is connected to the portable compressed air cylinder 43 via the suction side connection tube 41, the high pressure air in the portable compressed air cylinder 43 is fed into the insertion tube 13.
By simply rotating the handle 10 with a small force, the rotor 15 can be lightly rotated to fill the tire 49 with air from the discharge side end portion 19 in a short time, and the filling is much quicker than in the case of only manual work. Become. The presence of the one-way valve 47 can prevent the backflow of the charging air. Therefore,
Since it is possible to shorten the air filling work that takes a long time as in the conventional technique and reduce the labor, it is indispensable for the outdoor air filling work for the studless tire in winter. However, it is naturally possible to take in the outside air directly from the suction side end 18 and fill the tire 49 or the like from the discharge side end 19 side without using the portable compressed air cylinder 43.

Further, the portable compressed air cylinder 43 having a reduced internal volume is removed from the suction side end 18 and the suction side end 1 is removed.
8 is opened to the outside air, the other end 48 of the discharge side connection tube 46 on the discharge side end 19 side is connected to the valve 44 of the above-mentioned portable compressed air cylinder 43, and the handle 10 is rotated to carry the outside air. The compressed air cylinder 43 for use can be filled. At this time, due to the presence of the one-way valve 47,
The compressed air can be stored in the portable compressed air cylinder 43 while preventing the backflow of the filled air, and the air can be stored by itself even in an environment that does not depend on the filling company or cannot depend on it. In addition, various fluids can be used as the object to be pressure-fed by the manual tube pump.
Various liquids such as fuel are possible. Therefore, it becomes possible to easily fill and accumulate the pressure of these fluids into the inside of a cylinder or the like having a higher pressure than the suction side.

Further, the handle 10 is provided on the extension of the roller shaft 16 so that the turning radius of the handle 10 is substantially within the outer diameter of the case 11.
0 is less likely to interfere with the surroundings. Moreover, since the grip 25 protruding toward the opposite side of the handle 10 is provided, the case 11
It can be operated even in a place where there is no flat portion capable of supporting the handle, and the handle 10 can be operated by either a left-handed or a right-handed person by inverting the manual tube pump.

Further, the rotating body 15 is attached to the main shaft bearing 21.
Since it is supported on the rotating body main shaft 14 by means of the roller bearing 17 and the roller 17 is supported on the roller shaft 16 by means of the roller bearing 34, the rotating body 15 can be rotated lightly and smoothly, and a speed increasing gear as in the conventional case can be provided. It can be omitted and the number of parts can be reduced. In addition, as described above, the case 11 can be made substantially circular when viewed from the axial direction of the rotary body main shaft 14, which makes the whole compact and lightweight, which is suitable for carrying.

The invention of the present application is not limited to the above embodiments, but various modifications and applications are possible within the principle of the invention. For example, if the roller 17 is formed in a substantially truncated cone shape whose radius changes in the longitudinal direction, even if the roller shaft 16 is parallel to the rotary body main shaft 14, the gap between the roller 17 and the annular wall 12 can be changed. it can.

[Brief description of drawings]

FIG. 1 is a view showing a manual tube pump according to an embodiment with a part cut away.

FIG. 2 is a sectional view taken along line 2-2 of FIG.

FIG. 3 is a view showing a connecting side tube.

FIG. 4 is a diagram for explaining roller position adjustment.

FIG. 5 is a sectional view of the same portion as FIG. 2 of the preceding example.

[Explanation of symbols]

10: handle, 11: case, 12: annular wall, 13:
Internal tube, 14: Spindle main body, 15: Rotor, 1
6: Roller shaft, 17: Roller, 21: Main shaft bearing, 24: Washer, 25: Grip, 34: Roller bearing, 41: Suction side connection tube, 43: Portable compressed air, 46: Discharge side connection tube, 47: One way valve

Claims (5)

[Claims] 1. A case having an annular wall, an insertion tube provided along a part of the inner surface of the annular wall, and an interior tube surrounded by the interior tube and rotated by a manual handle. A rotating body, a roller supported on the outer peripheral portion of the rotating body via a roller shaft, and a roller that rotates together with the rotating body while crushing a part of the insertion tube, and the rotating body protruding from the central portion. A manual tube pump including a rotatable main shaft rotatably supported, wherein a distance between the roller and an inner surface of the annular wall facing the outer peripheral surface of the roller is variable. 2. The manual tube pump according to claim 1, wherein the roller shaft is inclined with respect to the main shaft of the rotating body. 3. The manual tube pump according to claim 1, wherein a fixed position of the rotary body in the main body axis direction of the rotary body is adjustable in the axial direction. 4. The method according to claim 1, wherein both ends of the insertion tube are provided with a suction side end portion and a discharge side end portion, and a compressed gas cylinder is connected to the suction side end portion. Manual tube pump. 5. An end portion on the suction side and an end portion on the discharge side are provided at both ends of the insertion tube, and the discharge side end portion of the insertion tube is connected to a filling destination via a one-way valve. The manual tube pump according to claim 1.