KR101819077B1 - Jet Dispensing Device Using Hinge Lever Type Displacement Amplification Mechanism - Google Patents

Abstract

The present invention is a jet dispenser to which a mechanism for expanding displacement of a piezoelectric actuator is applied using a hinge-lever method. More particularly, the present invention relates to a hinge-lever type jet dispensing apparatus that analyzes various displacement expansion mechanisms to compensate for a low displacement of a piezoelectric actuator, and is relatively simple in structure and operation principle.
According to an embodiment of the present invention, A spraying part formed inside the housing and receiving a droplet from a suction path provided at one side and discharging droplets to the other side; A dispenser head portion that is reciprocally driven in the longitudinal direction to pressurize the liquid discharge port in the jet portion; A lever portion supported by the inner wall of the housing and configured to be rotatable according to the reciprocating drive of the dispenser head; And one end of the rod portion is connected to a protruding portion formed at a predetermined height from an inner wall opposite to the inner wall of the housing or the inner wall of the housing to which the lever portion is supported and supported by the lever portion, The present invention provides a jet dispenser using displacement expansion of a hinge lever type including a piezoelectric actuator capable of increasing and decreasing the displacement.

Description

[0001] The present invention relates to a jet dispenser using a hinge lever type displacement expanding apparatus,

The present invention is a jet dispenser to which a mechanism for expanding displacement of a piezoelectric actuator is applied using a hinge-lever method. In order to compensate for the low displacement of the piezoelectric actuator, various displacement expanding mechanisms are analyzed, and a hinge-lever type jet dispensing apparatus in which the structure and operation principle are relatively simple is disclosed.

Various dispensers for feeding a solution on a semiconductor substrate in a certain amount are disclosed. The application of dispensers is widely applied to semiconductors, computers, automobiles, medical and communication fields.

In a semiconductor manufacturing process such as a PCB, a dispenser must be set to accurately spray a predetermined amount of a target solution under a specific condition, accurately discharge a droplet, and simultaneously mass-produce a large amount of products. .

Solenoid valves have mainly been used as valves for shutting off liquid dispensing, but can be replaced by piezoelectric actuator valves in fields requiring faster driving speed and response speed. Piezoelectric actuators are commonly used with displacement amplifiers because they have small displacements. The larger the displacement, the more important is the advantage that the flow range that can be dispensed is increased. Therefore, there is a need for a displacement increasing mechanism capable of minimizing the force required to drive the piezoelectric actuator and simultaneously increasing the displacement.

As an example of a displacement increasing mechanism, there has been known an example in which the displacement is amplified by using a difference in cross sectional area in the past, or the displacement is amplified by using the principle of the lever. More specifically, an embodiment using a bimorph piezoelectric element (Korean Patent Laid-Open No. 10-2012-0109092), an embodiment using a ring type and a uni-morph type piezoelectric actuator (Korean Patent No. 10-0680601) And the like.

Since the dispensing apparatus of the above-described conventional arrangement approaches mainly from the functional aspect of the device in order to enlarge the displacement, there is a certain limit in terms of securing a large displacement in terms of the dispensing flow control. In addition, the jet dispenser mechanism using the conventional displacement expanding mechanism, which can be confirmed through the above-described embodiments, has a problem in that the structure is complicated, the volume is large, and the space efficiency is poor.

It is necessary to improve the structure of the dispenser in order to secure a larger displacement while having a simple structure as much as possible from the viewpoint of cost reduction.

SUMMARY OF THE INVENTION It is an object of the present invention, which is devised to solve the problems of the conventional art, to find an optimized model by comparing displacement expansion ratios of a hinge-lever system and develop an optimum jet dispenser to which the model is applied.

In addition, through the present invention, the size of the dispenser is made compact so as to secure space efficiency.

According to an embodiment of the present invention, A spraying part formed inside the housing and receiving a droplet from a suction path provided at one side and discharging droplets to the other side; A dispenser head portion that is reciprocally driven in the longitudinal direction to pressurize the liquid discharge port in the jet portion; Quot; C " or " C " -shaped lever formed so as to be rotatable in accordance with the reciprocating drive of the dispenser head portion, the one end of which is orthogonally connected to the dispenser head portion and the other end thereof is connected to the inner wall of the housing via the first hinge, part; The other end of the rod portion is connected to a protruding portion formed at a predetermined height from the inner wall of the opposite side of the inner wall of the housing or the inner wall of the housing to which the lever portion is supported, The present invention provides a jet dispenser using displacement expansion of a hinge lever type including a piezoelectric actuator connected through two hinges and capable of increasing or decreasing displacement in the longitudinal direction.

According to one embodiment, the lever portion may be formed as a " b " bar structure as a whole.

The lever portion may be a rod-shaped member having a predetermined length, one end of which is orthogonally connected to the dispenser head portion and the other end of which is connected to the first rod via the first hinge from the inner wall of the housing, And a second load.

At this time, the first rod and the second rod may be integrally formed.

According to one embodiment, the lever portion may be formed as a " C " rod structure as a whole.

The lever portion is a rod-shaped member having a predetermined length, one end of which is orthogonally connected to the dispenser head portion and the other end of which is connected to the inner wall of the housing through a first hinge, And a third rod orthogonal to the second rod and extending parallel to the first rod.

At this time, the first rod, the second rod, and the third rod may be integrally formed.

According to an embodiment of the present invention, a second hinge may be formed at one end of the piezoelectric actuator to be connected to the inner wall of the housing, and a third hinge may be formed at the other end of the piezoelectric actuator to be connected to the lever.

The dispenser head portion may be supported by the first elastic means.

Further, it may further comprise a second elastic means disposed on the opposite side of the first elastic means with respect to the lever portion and applying a pre-load to the dispenser head portion.

Meanwhile, according to another embodiment of the present invention, A spraying part formed inside the housing and receiving a droplet from a suction path provided at one side and discharging droplets to the other side; A dispenser head portion that is reciprocally driven in the longitudinal direction to pressurize the liquid discharge port in the jet portion; A lever portion supported by the inner wall of the housing and configured to be rotatable according to the reciprocating drive of the dispenser head; And a piezoelectric actuator having a predetermined length and one end portion connected to the lever portion and the other end portion supported by an inner wall of the housing, the piezoelectric actuator including a piezoelectric actuator capable of increasing and decreasing a displacement in the longitudinal direction, One hinge is formed on the inner wall side of the housing where the jetting section is provided. The lever section is formed to have a shape of " C ", and is rotatably supported by the first hinge. One end of the lever is parallel to the piezoelectric actuator And the other end is connected to the dispenser head unit at right angles to the first elastic means, and the other end is connected to the dispenser head unit at right angles.

The piezoelectric actuator may be disposed in parallel with an inner wall of the housing in which the first hinge protrudes, and may be connected to the lever portion at a position eccentric from the center of the first hinge.

The lever portion is formed to have a shape of " C ". The lever portion is rotatably supported by the first hinge. One end of the lever portion is connected to the first elastic means disposed in parallel with the piezoelectric actuator. The other end of the lever portion is connected to the dispenser head And a second elastic means provided to support the dispenser head portion for applying a pre-load.

According to another embodiment of the present invention, the end portion of the lever portion is connected to the dispenser head portion at right angles, and the dispenser head portion can be supported by the first elastic means applying the restoring force, and the first elasticity And a second elastic means disposed on the opposite side of the means for applying a pre-load to the dispenser head portion.

According to the embodiment of the present invention, when the displacement enlargement ratio of the hinge lever system is compared, it is possible to provide a dispenser model having an optimized displacement expanding mechanism.

In addition, the size of the dispenser can be made small to ensure space efficiency.

1 is a cross-sectional view illustrating a configuration of a jet dispenser according to an embodiment of the present invention.
2 is an enlarged view of a jetting section according to an embodiment of the present invention.
3 is a perspective view of a jet dispenser according to one embodiment of the present invention.
FIG. 4 is a view illustrating a configuration of a jet dispenser according to another embodiment of the present invention.
5 is a view illustrating the configuration of a jet dispenser according to another embodiment of the present invention.
6 is a view showing a jet dispenser using a conventional seesaw lever as the first comparative example (Case 1).
Fig. 7 is a view showing the principle of leverage shown in Fig. 6;
8 is a view showing a jet dispenser using an arm type lever as a second comparative example (Case 2).
Fig. 9 is a view showing the principle of leverage shown in Fig. 8. Fig.
10 is a third comparative example (Case 3) showing a jet dispenser according to an embodiment of the present invention.
11 is a view showing a coupling method of the hinge part according to the present invention.
12 is a view showing the configuration of a jet dispenser according to another embodiment of the present invention.
13 is a view showing the configuration of a jet dispenser according to another embodiment of the present invention.

The embodiments described below are provided so that those skilled in the art can easily understand the technical idea of the present invention, and thus the present invention is not limited thereto. In addition, the matters described in the attached drawings may be different from those actually implemented as schematized drawings to easily describe embodiments of the present invention.

Before describing in detail several embodiments of the invention, it will be appreciated that the application is not limited to the details of construction and arrangement of components set forth in the following detailed description or illustrated in the drawings.

It is also to be understood that when an element is referred to as being connected or connected to another element, it may be directly connected or connected to the other element, but it should be understood that there may be other elements in between.

The term "connection" as used herein means a direct connection or an indirect connection between a member and another member, and may refer to all physical connections and electrical connections such as adhesion, attachment, fastening, bonding, and coupling.

Also, the expressions such as 'first, second, third, etc.' are expressions used only for distinguishing a plurality of configurations, and do not limit the order or other features among the configurations.

The singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. The word "comprise" or "having" is used herein to mean that a feature, a number, a step, an operation, an element, a component or a combination thereof is included in the description, A step, an operation, an element, a part, or a combination thereof.

It should be noted that prior to the description, the dispenser of the present invention may include both contact and non-contact dispensers.

First, the components of the jet dispenser of the present invention will be described in detail with reference to FIGS. 1 to 3. FIG.

1 is a cross-sectional view illustrating a configuration of a jet dispenser according to an embodiment of the present invention. 2 is an enlarged view of a jetting section according to an embodiment of the present invention. 3 is a perspective view of a jet dispenser according to one embodiment of the present invention.

Referring to FIG. 1, a jet dispenser using a hinge lever type displacement expansion according to an embodiment of the present invention includes a housing 100; A spraying part 101 formed inside the housing 100 and supplied with droplets from a suction path provided at one side and discharging droplets to the other side; A dispenser head part 110 formed to be capable of pressing the liquid discharge opening in the spray part 101 while reciprocating in the longitudinal direction; A lever part 130 supported from the inner wall of the housing 100 and rotatable according to the reciprocating drive of the dispenser head part 110; And one end of the rod portion is connected to the lever 130 and the other end of the rod portion is connected to an inner wall of the housing 100 opposite to the inner wall of the housing 100 or the inner wall of the housing 100 And a piezoelectric actuator 140 connected to the protrusion formed at a predetermined height and capable of increasing or decreasing the displacement in the longitudinal direction.

Referring to FIGS. 1 and 2, a conventional dispenser body configuration in which the interior of the housing 100 of the present invention is hollow can be applied. For example, a discharge port for injecting droplets may be formed on one side of the housing 100 and the other side of the housing 100 may be provided with a dispenser of the present invention on a conveyer of a semiconductor process line, for example. The fixing means 160 may be formed.

The jetting section (101) of the present invention is configured to have a space through which a droplet flows on one side of the housing (100), and a droplet ejecting opening is formed at an end thereof. 2 and 3, the suction passage 201 is formed on one side of the jetting section 101, and the suction passage is formed by a droplet, which is supplied from a droplet storage section provided outside the dispenser apparatus of the present invention, .

The dispenser 101 of the present invention discharges droplets in an operation in which the dispenser head 110 is moved toward the droplet ejection port in relation to the reciprocating drive of the dispenser head 110 to be described later, The droplet may be formed to be supplied from the droplet storage unit 200 in an operation of moving away from the discharge port. The dispenser head 110 may be supported by the first resilient means 120 as shown in the figure and may be linearly guided by the interior structure (nozzle portion) of the enclosed housing 100. 2 and 3, which is disposed on the opposite side of the first elastic means 120 with respect to the lever 130 to apply a pre-load to the dispenser head 110, And may further comprise elastic means (121). This will be described later in detail with reference to FIG. 12 and FIG. Here, the preload refers to a preliminary load applied to the object for the purpose of fine movement, wear prevention, etc. during transportation of the jet dispenser of the present invention. When the dispenser head 110 is stroked according to the pre-application of the pre-pressure, more smooth and stable operation is performed.

1, the dispenser head 110 includes a so-called slender pin, a chisel, a needle or the like, It is a pushing means in the form of a plunger. The dispenser head 110 of the present invention presses the liquid droplet introduced into the jetting section 101 and discharges the liquid droplet out of the liquid discharge port. In this process, the nozzle part where the liquid moves and the shortest part of the dispenser head part 110 The material of the dispenser head 110 is preferably a metal material resistant to fatigue and breakage. 3, as the droplet storage unit 200 fills the jetting unit 101 with droplets, the droplet storing unit 200 absorbs the impact with the liquid discharge port generated during the stroke of the dispenser head unit 110, And the like.

In the present invention, the configuration of the lever portion 130 has the greatest technical characteristic as compared with the prior art.

The lever 130 is basically supported from the inner wall of the housing 100 and is rotatable according to the reciprocating drive of the dispenser head 110. That is, when the dispenser head 110 linearly moves horizontally or vertically, the lever 130 connected to the dispenser head 110 rotates about the contact point with the inner wall of the housing 100 and moves. Here, the contact point with the inner wall of the housing 100 may correspond to a hinge.

Here, the lever portion 130 may be formed as an overall "? &Quot;

Specifically, the lever 130 is a rigid member having a predetermined length and may have the same shape as a rod. One end of the lever part 130 is connected to the dispenser head part 110 in a perpendicular direction and the other end of the lever part 130 is connected to the inner wall of the housing 100 through a first hinge h1. And a second rod L2 orthogonal to the first rod L1.

1, an end portion of the lever portion 130 according to an embodiment of the present invention is connected to the dispenser head portion 110, and the axial direction of the entire lever portion 130 and the axis of the dispenser head portion 110 Direction can be connected to be approximately orthogonal.

The lever 130 in the present embodiment may be composed of a first rod L1 and a second rod L2. The first rod L1 and the second rod L2 are separated from each other, Alternatively, the first rod L1 and the second rod L2 may be integrally formed as a rigid member formed of the same material. That is, one long bar member may be bent at a predetermined position and molded as a substantially " b " shaped lever.

As a more specific example, a through hole 131 is formed at one end of the lever portion 130, and the dispenser head portion 110 is inserted into the through hole 131 to be driven. At this time, a clearance exists between the through hole 131 of the lever part 130 and the dispenser head part 110, so that the axis of the dispenser head part 110 and the lever part 130 can be shifted in an orthogonal state, and at the same time, the lever unit 130 can be pivoted about the hinge h1.

Meanwhile, unlike the above-described embodiment, the lever portion 130 of the present invention may be formed as a whole with a " C " -shaped rod structure.

The lever 130 is a rigid member having a predetermined length and may have the same shape as a rod. One end of the lever 130 is connected to the dispenser head 110 in an orthogonal manner and the other end of the lever 130 is connected to the inner wall of the housing 100 through a first hinge h1. A second rod L2 orthogonal to the first rod L2 and a third rod L3 orthogonal to the second rod L2 and extending in parallel with the first rod L1.

4, the lever unit 130 may include a first rod L1, a second rod L2, and a third rod L3. The first rod L1, the second rod L2, The first rod L1, the second rod L2 and the third rod L3 may be formed of the same material as the first rod L1, the second rod L2, and the third rod L3, Or may be integrally formed as a rigid member. That is, one long bar member may be bent twice at a predetermined position and molded as a substantially " C " shaped lever.

The piezoelectric actuator 140 of the present invention is a piezoelectric body having a predetermined length. According to an embodiment, one end portion may be connected to the lever portion 130 and the other end portion may be formed to be supported from an inner wall on the opposite side of the inner wall of the housing 100 to which the lever portion 130 is supported. It is important in this embodiment that the inner wall of the housing 100 on which the lever 130 is supported and the inner wall of the housing on which the piezoelectric actuator 140 is supported face each other in opposite directions.

The piezoelectric actuator 140 will be described in more detail. As the rod-like piezoelectric body, it is possible to increase or decrease the displacement in the longitudinal direction. The advantage of a piezoelectric actuator is that it has fewer electrical noises and allows precise control. According to one embodiment, the piezoelectric actuator 140 of the present invention may be formed by stacking a plurality of piezoelectric elements having a small thickness to form a long rod-shaped piezoelectric body. In the case of the laminated piezoelectric actuator, It is advantageous to obtain a large displacement amount with energy. The piezoelectric element may be electrically connected to an external control unit (not shown), and may be controlled through the piezoelectric element to vary the displacement in the longitudinal direction. 1, the piezoelectric actuator 140 may be formed to be parallel to the first rod L1 of the lever portion 130 in the longitudinal direction.

A second hinge h2 may be formed at one end of the piezoelectric actuator 140 to be connected to the inner wall of the housing 100 and a third hinge h3 may be formed at the other end of the piezoelectric actuator 140 And may be connected to the lever portion 130. That is, the piezoelectric actuator 140 is formed so as to be rotatable about the second hinge h2 and / or the third hinge h3 as the lever 130 can rotate around the first hinge h1 .

Therefore, when the dispenser head unit 110 reciprocates, the lever unit 130 rotates, the piezoelectric actuator 140 also rotates finely, and the displacement of the piezoelectric actuator 140 can be increased or decreased. More specifically, one side of the piezoelectric actuator 140 is supported by the lever portion 130 and the other side of the piezoelectric actuator 140 is supported from the inner wall of the housing 100, so that the lever portion 130 When the piezoelectric actuator 140 rotates in the clockwise direction, one side of the piezoelectric actuator 140 is pressed to press the piezoelectric element of the piezoelectric actuator 140. On the other hand, when the lever portion 130 rotates counterclockwise with reference to FIG. 1, the pressure applied to the piezoelectric actuator 140 is released. According to this method, the displacement of the piezoelectric actuator 140 is increased or decreased.

5, the jet dispenser according to an exemplary embodiment of the present invention may further include a protrusion 150 formed at a predetermined height from the inner wall of the housing 100. Referring to FIG. In this embodiment, the other end of the lever portion 130 is connected to the protrusion 150 of the piezoelectric actuator 140. It is possible to reduce the length of the piezoelectric actuator 140 itself and to reduce the weight of the dispenser and the material cost in the process of manufacturing the dispenser while the piezoelectric actuator 140 has the same principle as the above-described embodiment.

Next, the principle of increasing the displacement of the jet dispenser according to an embodiment of the present invention will be described in detail with reference to FIG. 6 to FIG. Prior to the description of the drawings, the same constituent elements as in the prior art will be described using the same reference numerals.

The jet dispenser must have several important elements. Considering control simplicity, durability, expandability, process compatibility, etc., it is advantageous to expand the hinge-lever displacement. There are various methods for realizing displacement expansion of the hinge-lever system. In order to illustrate the merits of the jet dispenser using displacement expansion of the hinge-lever type according to an embodiment of the present invention, displacement expansion of the hinge-lever type according to the following three embodiments is analyzed and compared. The angular expansion method can be compared in terms of displacement, force, shape and size.

6 is a view showing a jet dispenser using a conventional seesaw lever as the first comparative example (Case 1). Fig. 7 is a view showing the principle of leverage shown in Fig. 6; Specifically, Fig. 7 (a) shows the free object diagram FBD in Fig. 6, and Fig. 7 (b) shows the output displacement with respect to the input displacement in Fig.

6, the jet dispenser of the first comparative example (Case 1) includes a housing 100, a dispenser head 110, a lever 130, and a piezoelectric actuator 140 in the same manner as the embodiment of the present invention. . 5, the lever 130 is a rod-shaped member formed in a straight line, unlike the embodiment of the present invention. In the connection structure between the inner wall of the housing 100 and the piezoelectric actuator 140, , A fulcrum (B), and a working point (C) are formed in this order.

The jet dispenser of the first comparative embodiment (Case 1) uses the most commonly used seesaw lever principle. Referring to Fig. 7 (a), the output force considering the torque balance around the hinge point h1 is expressed by the following [Expression 1].

[Equation 1]

The output displacement with respect to the input displacement is as shown in FIG. 7 (b), and the ratio of the input displacement to the output displacement by the piezoelectric actuator 140 is expressed by the following equation (2).

[Equation 2]

8 is a view showing a jet dispenser using an arm type lever as a second comparative example (Case 2). Fig. 9 is a view showing the principle of leverage shown in Fig. 8. Fig. Specifically, Fig. 9 (a) shows the free object diagram FBD in Fig. 8, and Fig. 9 (b) shows the output displacement with respect to the input displacement in Fig.

Referring to FIG. 8, the jet dispenser of the second comparative example (Case 2) includes a housing 100, a dispenser head 110, a lever 130, and a piezoelectric actuator 140, similar to the embodiment of the present invention have. However, unlike the embodiment of the present invention, the lever 130 is also a rod-shaped member formed in a straight line. In the connection structure between the inner wall of the housing 100 and the piezoelectric actuator 140, (B), a point of weakness (A), and a point of action (C) are formed in this order.

In the second comparative example (Case 2), the jet dispenser is applied to a seesaw lever, and utilizes the principle of an arm lever. Referring to Fig. 9 (a), the output force considering the torque balance around the hinge point h1 is expressed by the following [Expression 3].

[Equation 3]

Comparing this [Equation 3] and [Equation 1] described above leads to the same equation, but in actuality the total length in the horizontal direction in Case 1 is a + b while in Case 2 the width in the horizontal direction is b The magnitude of the input force Fi shown in Equation 1 should be larger than that in Equation 3 in order to generate an output force Fo of the same magnitude. Therefore, (case 2) is more advantageous than the lever of (case 1) in terms of the torque required for ejecting the droplets of the jet dispenser.

The output displacement with respect to the input displacement is as shown in FIG. 9 (b), and the ratio of the input displacement and the output displacement by the piezoelectric actuator 140 is expressed by the following equation (4).

[Equation 4]

이며, 따라서

이므로, 결국 Case B의 변위확대 비율도

로서 도출된다. 이는 (Case 1)에서와 크게 다르지 않다.here,

Therefore,

Thus, eventually the expansion ratio of Case B

As shown in FIG. This is not so different from (Case 1).

Figure 10 is a third comparative example (Case 3) showing a jet dispenser according to one embodiment of the present invention.

10, the jet dispenser of the third comparative example (Case 2) includes a housing 100, a dispenser head 110, a lever 130, and a piezoelectric actuator 140 as in the embodiment of the present invention Consists of. Here, for convenience of explanation, it is assumed that the protrusion 150 protruded from one side of the inner wall of the housing 100 is further included. It is also assumed that the lever portion 130 of this embodiment is the " b " -shaped lever portion. 9, the force point A, the fulcrum point B, and the action point C are formed in this order, and not on a straight line, but according to the shape of the lever portion 130, A triangle is formed.

That is, the jet dispenser of the third comparative example (Case 3) utilizes the principle of the " b "

Referring to FIG. 10, the output force considering the torque balance around the hinge point h1 is expressed by Equation (5).

[Equation 5]

The ratio of the input displacement to the output displacement by the piezoelectric actuator 140 is expressed by Equation (6).

[Equation 6]

In Case 3, the distance a between the fist point A and the fulcrum B is increased and the fulcrum B (b) is increased by increasing the distance a between the fulcrum A and the fulcrum B in Case 3, ) And the action point C can be made small, so that the output force can be adjusted to be sufficiently large.

In addition, the variability is much better than Case 1 and Case 2 in terms of displacement expansion.

Therefore, a compact jet dispenser can be realized in terms of structure from a dispenser apparatus according to the related art. Accordingly, a plurality of dispenser devices are aligned in a limited space, and a plurality of droplet discharging operations can be performed according to a predetermined algorithm, thereby satisfying promptness required in the semiconductor manufacturing industry.

Next, some embodiments according to the hinge coupling method of the present invention will be introduced with reference to FIG.

The hinge (H1, H2, H3) in the present invention is not limited to any specific embodiment, but it is sufficient that the hinge (H1, H2, H3) is rotatably supported while stably supporting the lever portion 130 and the piezoelectric actuator 140. However, for the sake of understanding, some embodiments will be described with reference to FIG.

11A shows a structure in which a groove (or groove) 102 is formed in the housing 100 and a hinge H1 protruding from the lever portion 130 is inserted and supported in the groove.

11 (b) shows a structure in which a groove (or groove) 132 is formed in the lever portion 130 and a hinge H1 protruding from the housing 100 is inserted into the groove and supported.

The hinge coupling method according to the above-described two embodiments shows the integrated structure of the housing 100 or the lever part 130 and the hinge H1.

On the other hand, FIG. 11 (c) shows a state in which grooves 102 and 132 are formed on mutually facing surfaces of the housing 100 and the lever portion 130, respectively, and the housing 100 and the lever portion 130, And the hinge H1 is inserted into the groove and supported.

The hinge coupling method of the present invention can be implemented in various embodiments, and it is possible to provide an optimized displacement expanding mechanism by applying a lever principle between a hinge and a lever, or between a hinge and a piezoelectric actuator.

Finally, with reference to FIGS. 12 and 13, a hinge-lever type displacement enlargement jet dispenser in a manner different from the above-described embodiment will be additionally described.

Referring to FIG. 12, a jet dispenser using displacement expansion of a hinge lever type according to another embodiment of the present invention

A housing (100); A spraying part 101 formed inside the housing 100 and supplied with droplets from a suction path provided at one side and discharging droplets to the other side; A dispenser head part 110 formed to be capable of pressing the liquid discharge opening in the spray part 101 while reciprocating in the longitudinal direction; A lever part 130 supported from the inner wall of the housing 100 and rotatable according to the reciprocating drive of the dispenser head part 110; And a piezoelectric actuator 140 having one end connected to the lever portion 130 and the other end supported by the inner wall of the housing 100 and capable of increasing and decreasing displacement in the longitudinal direction, The first hinge h1 for rotatably supporting the lever unit 130 may be formed on the inner wall of the housing 100 on which the injection unit is installed.

Particularly, in this embodiment, the piezoelectric actuator 140 is connected to the lever 130 at a position eccentric from the center of the first hinge h1, thereby performing an operation of increasing the displacement. Specifically, the piezoelectric actuator 140 may be connected to the edge of the lever portion 130 while being disposed in parallel to the inner wall of the housing in which the first hinge h1 protrudes, The first hinge h1 is positioned somewhat eccentrically from the center of the shaft that rotatably supports the lever 130. [ The displacement of the piezoelectric actuator 140 at the time of rotation of the lever portion 130 by connecting at the eccentric position with respect to the center of the hinge h1 causes the piezoelectric actuator 140 to be displaced in the direction of the hinge h1, It is possible to obtain a larger amount of displacement than in the case where it is connected to the connecting portion 130.

12, the lever portion 130 of the present embodiment is formed to have a "C" shape, and is rotatably supported by the first hinge. One end of the lever portion 130 is connected to the dispenser head portion 110, And the other end may be connected to the first elastic means 120 arranged in parallel with the piezoelectric actuator 140. The second elastic means 121 provided separately may support the dispenser head 110 to apply a pre-load.

 13, one end of the lever 130 is connected to the dispenser head 110 by a first elastic means (not shown) for supporting the dispenser head 110 and applying a restoring force 120 may be extended from the dispenser head 110 as it is. The second elastic means 121 may be disposed on the opposite side of the first elastic means 120 with respect to the lever 130 to apply a pre-load to the dispenser head 110 .

According to the above-described embodiment, the displacement magnification efficiency is high due to the structural advantage according to the specific shape of the lever part 130 and the structural advantage according to the connection mechanism of the piezoelectric actuator 140 and the lever part 130, A more advantageous dispenser can be provided.

The present specification is not intended to limit the present invention by the specific terms given. While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Modifications, alterations, and modifications can be made.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may appropriately define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

That is, the scope of the present invention is defined by the appended claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents are included in the scope of the present invention .

100: Housing
110: dispenser head part
120: first elastic means
121: second elastic means
130: lever portion
131: Through hole
140: Piezoelectric actuator
150: protrusion
200: droplet storage unit
H1: First hinge
H2: Second hinge
H3: Third hinge
L1: first load
L2: second load
L3: Third load
D: Drops
A: Stress
B: Fulcrum
C: Point of action

Claims (17)

housing;
A spraying part formed inside the housing and receiving a droplet from a suction path provided at one side and discharging droplets to the other side;
A dispenser head portion that is reciprocally driven in the longitudinal direction to pressurize the liquid discharge port in the jet portion;
Quot; C " or " C " -shaped lever formed so as to be rotatable in accordance with the reciprocating drive of the dispenser head portion, the one end of which is orthogonally connected to the dispenser head portion and the other end thereof is connected to the inner wall of the housing via the first hinge, part;
The other end of the rod portion is connected to a protruding portion formed at a predetermined height from the inner wall of the opposite side of the inner wall of the housing or the inner wall of the housing to which the lever portion is supported, And a piezoelectric actuator connected to the hinge lever via two hinges and capable of increasing and decreasing the displacement in the longitudinal direction. delete The method according to claim 1,
The lever portion
A first rod having a predetermined length and having one end orthogonally connected to the dispenser head portion and an opposite end connected to the inner wall of the housing through a first hinge; And
And a second rod orthogonal to the first rod. ≪ Desc / Clms Page number 20 > The method of claim 3,
Wherein the first rod and the second rod are formed integrally with each other. delete The method according to claim 1,
The lever portion
A first rod having a predetermined length and having one end orthogonally connected to the dispenser head portion and an opposite end connected to the inner wall of the housing through a first hinge;
A second rod orthogonal to the first rod; And
And a third rod orthogonal to the second rod and extending in parallel with the first rod. ≪ Desc / Clms Page number 19 > The method according to claim 6,
Wherein the first rod, the second rod, and the third rod are integrally formed. delete delete The method according to claim 1,
Wherein the dispenser head unit is supported by a first elastic means for applying a restoring force. 11. The method of claim 10,
And a second elastic means disposed on the opposite side of the first elastic means with respect to the lever portion to apply a pre-load to the dispenser head portion. The hinge lever- dispenser. housing;
A spraying part formed inside the housing and receiving a droplet from a suction path provided at one side and discharging droplets to the other side;
A dispenser head portion that is reciprocally driven in the longitudinal direction to pressurize the liquid discharge port in the jet portion;
A lever portion supported by the inner wall of the housing and configured to be rotatable according to the reciprocating drive of the dispenser head; And
A rod-like piezoelectric body having a predetermined length, the piezoelectric actuator including one end connected to the lever portion and the other end supported by the inner wall of the housing,
The first hinge supporting the lever portion so as to be rotatable is formed on the inner wall side of the housing on which the jetting section is provided,
The lever portion is formed to have a shape of "C", is rotatably supported by the first hinge, and has one end connected to the first elastic means disposed in parallel with the piezoelectric actuator, and the other end connected to the dispenser head Wherein the hinge lever is displaceable in the first direction. 13. The method of claim 12,
Wherein the piezoelectric actuator is disposed in parallel with an inner wall of the housing in which the first hinge protrudes and connected to the lever portion at a position eccentric from the center of the first hinge. Jet dispenser. delete 13. The method of claim 12,
Further comprising a second resilient means adapted to support the dispenser head to apply a pre-load to the dispenser head. 13. The method of claim 12,
Wherein the lever portion has an end connected to the dispenser head portion at right angles,
Wherein the dispenser head unit is supported by a first elastic means for applying a restoring force. 17. The method of claim 16,
And a second elastic means disposed on the opposite side of the first elastic means with respect to the lever portion to apply a pre-load to the dispenser head portion. The hinge lever- dispenser.

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