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Pipe pump

A technology of tube pumps and tubes, applied in the field of tube pumps, can solve problems such as difficulty in miniaturization, difficulty in thinning, and inability to store for a long time, and achieve the effects of miniaturization, long life and miniaturization

Inactive Publication Date: 2006-09-06
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in conventional tube pumps, since the motor that drives the rotor to rotate is large, there is a problem that it is difficult to reduce the size, especially the thickness.
Moreover, there is also the problem that the electromagnetic coil of the motor may affect other instruments
[0005] Moreover, in the existing tube pump, there is also the problem that the tube that is repeatedly pressed and closed by the roller deteriorates rapidly, and the service life of the tube is short.
[0006] In addition, in the conventional tube pump, since a part of the tube is continuously pressed when not in use, there is a problem that the part is crushed and deformed.
When the tube is flattened, the deterioration of this part will increase, and the discharge volume of the tube pump will become unstable, and there is a disadvantage that the desired discharge volume cannot be obtained.
Therefore, in the existing tube pump, for example, there is a problem that it cannot be stored for a long time after production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0130] figure 1 and figure 2 are a sectional plan view and a sectional side view showing the first embodiment of the tube pump of the present invention, respectively, image 3 for figure 1 and figure 2 A perspective view of the vibrating body in the tube pump shown in, Figure 4 for figure 1 and figure 2 The top view of the vibrating body during bending vibration in the tube pump shown in , Figure 5 for figure 1 and figure 2 The top view of the convex part of the vibrating body in the tube pump shown in , when it performs elliptical motion. in addition, figure 1 for figure 2 The cross-sectional view at the Y-Y line in the center, figure 2 for figure 1 Sectional view at X-X line. Also, in the following description, the figure 2 The upper side in is called "upper", and the lower side is called "lower".

[0131] figure 1 and figure 2 The tube pump 1A shown in the figure includes: a main body 2 with a mounting portion 210 for installing an elastic tube 10...

no. 2 Embodiment approach

[0184] Figure 6 It is a sectional side view showing the second embodiment of the tube pump of the present invention. Also, in the following description, the Figure 6 The upper side in is called "upper", and the lower side is called "lower".

[0185] Hereinafter, a second embodiment of the tube pump according to the present invention will be described with reference to this figure, and the description will focus on the differences from the above-mentioned first embodiment, and the same description will be omitted.

[0186] In the tube pump 1B of this embodiment, the diameter of the drum 10 is smaller than that of the tube pump 1A of the first embodiment described above, and at the same time, it is displaced on the inner peripheral side of the rotor 5 .

[0187] Correspondingly, the shape of the base 21 is also different, and the radius of curvature of the inner peripheral surface 215 is reduced. That is, a step 214 is formed on the wall portion 212 , and the diameter of th...

no. 3 Embodiment approach

[0192] Figure 7 It is a plan view showing the third embodiment of the tube pump of the present invention, Figure 8 for Figure 7 Side view of the tube pump shown in . Also, in the following description, the Figure 8 The upper side in is called "upper", and the lower side is called "lower".

[0193] Hereinafter, a third embodiment of a tube pump according to the present invention will be described with reference to the drawings. The description will focus on differences from the first embodiment described above, and similar descriptions will be omitted.

[0194] In the tube pump 1C of the present embodiment, the vibrator 6 is provided so as to abut against the rotor main body 51 of the rotor 5 from the direction of the rotor rotating shaft 52 to drive the rotor main body 51 . That is, in this embodiment, the rotor main body 51 is a driven body, and the ring 53 is not provided on the rotor 5 .

[0195] The arm portion 68 of the driving body 6 is fixedly connected to the...

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Abstract

A tube pump (1A) of the present invention is provided with a main body (2) to which a tube (100) is attached, a rotor (5), an oscillator (6) located so as to touch an outer circumferential face of the rotor (5), and a plurality of rollers (10) mounted to the rotor (5) for pressurizing and thereby squeezing the tube (100). The oscillator (6) is almost shaped like a rectangular plate, and is formed by laminating an electrode, a piezoelectric element, and a reinforcing plate. When an alternating current voltage is applied to the piezoelectric element, the oscillator (6) oscillates longitudinally in the direction of the length at minute amplitude as the piezoelectric element expands and contracts. The rotor (5) receives a frictional force and a pressing force from a convex portion (66) when the oscillator (6) expands, and the rotor (5) rotates as it repetitively receives the frictional force and the pressing force. Consequently, it is possible to provide a tube pump having a simple structure, and hence, having an advantage in reducing the size, particularly the thickness thereof.

Description

technical field [0001] The invention relates to a tube pump. Background technique [0002] Tube pumps for transporting liquid in tubes by crushing elastic tubes are well known, and are widely used, for example, in medical instruments, printers, and the like. [0003] This type of tube pump generally has a rotor, a motor that drives the rotor to rotate, and a plurality of rollers provided on the rotor, and the rollers rotate the rotor while pressing and closing tubes arranged along the outer periphery of the rotor to transfer liquid. [0004] However, in conventional tube pumps, since the motor for driving the rotor to rotate is large, there is a problem that it is difficult to reduce the size, especially the thickness. Furthermore, there is a problem that the electromagnetic coil of the motor may affect other devices. [0005] Furthermore, in the conventional tube pump, the tube repeatedly pressed and closed by the roller deteriorates rapidly, and the tube has a short serv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B43/09F04C5/00F04B43/04F04B43/12
CPCF04B43/046F04B43/1253F04B43/14F04C5/00
Inventor 宫泽修
Owner SEIKO EPSON CORP
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