TWI660158B - Displacement magnification device and displacement amplifier - Google Patents

Abstract

The invention discloses a displacement amplifying device and a displacement amplifier. The displacement amplifier is an integrally formed single-piece component, and includes an inner frame, a displacement input portion, an elastic portion connecting the inner frame and the displacement input portion, an amplification mechanism, and a displacement output. unit. The inner frame includes a base portion and a support portion connected to the base portion. The magnification mechanism includes a rotation fulcrum, a force receiving point, and a force application point. The rotation fulcrum of the magnification mechanism is connected to the support portion, and the force receiving point is connected to the displacement input portion. The displacement output portion is connected to the urging point of the amplifying mechanism. When the displacement input portion moves a first distance in a linear direction when receiving the external force, the displacement input portion forces the magnifying mechanism to rotate to rotate the force application point, thereby driving the displacement output portion to move a second distance greater than the first distance in the linear direction.

Description

Displacement amplification device and displacement amplifier

The present invention relates to a displacement amplifying device and a displacement amplifier, and more particularly to an integrally formed displacement amplifier and a displacement amplifying device including the integrally formed displacement amplifier.

The existing displacement amplifier has a multi-piece assembly structure, so the existing displacement amplifier has assembly tolerances, which will affect the displacement of the existing displacement amplifier, and the above assembly process will virtually increase the production of the existing displacement amplifier. cost.

Therefore, the present inventor believes that the above-mentioned defects can be improved, and with special research and cooperation with the application of scientific principles, he finally proposes an invention with a reasonable design and effective improvement of the above-mentioned defects.

An embodiment of the present invention is to provide a displacement amplifying device and a displacement amplifier, which can effectively improve defects that may occur in the existing displacement amplifier.

An embodiment of the present invention discloses a displacement amplifying device, including: a displacement amplifier, which is an integrally formed component, and the displacement amplifier includes: an inner frame including a base portion and at least one support portion connected to the base portion, and The base portion and at least one of the support portions together define an accommodation space on the inside; at least one elastic portion is disposed in the accommodation space, and one end of at least one of the elastic portions is connected to the base portion; a displacement The input part is connected to the other end of at least one of the elastic parts; at least one magnification mechanism includes a rotation fulcrum, a force point, and a force application point, and the rotation fulcrum of at least one of the magnification mechanisms is connected to at least A support portion, and the force receiving point of at least one of the magnifying mechanism is connected to the displacement input portion; and a displacement output portion connected to the force applying point of at least one of the magnification mechanism; and An actuator is disposed on one side of at least one of the elastic portions, and the actuator includes a fixed end and a driving end at opposite ends, and the fixed end is connected to At the base, the driving end is connected to the displacement input portion; wherein when the actuator applies a force to the displacement input portion, the displacement input portion moves a first distance and forces at least one The magnification mechanism rotates to rotate the force application point of at least one of the magnification mechanisms, thereby driving the displacement output portion to move a second distance, the second distance being greater than the first distance; wherein at least An elastic portion is stretched by the displacement input portion for the first distance to store an elastic force that tends to return the displacement amplifier to its original position.

An embodiment of the present invention also discloses a displacement amplifier, which is an integrally formed single-piece component. The displacement amplifier includes: an inner frame including a base portion and at least one support portion connected to the base portion, and the base portion An accommodation space is defined inside with at least one of the support portions; at least one elastic portion is disposed in the accommodation space, and one end of at least one of the elastic portions is connected to the base portion; a displacement input portion, Connected to the other end of at least one of the elastic portions; at least one magnifying mechanism including a rotation fulcrum, a force receiving point, and a force applying point, the rotation fulcrum of at least one of the magnifying mechanisms is connected to at least one of the A support portion, and the force receiving point of at least one of the amplifying mechanism is connected to the displacement input portion; and a displacement output portion connected to the force applying point of at least one of the amplifying mechanism; wherein when the When the displacement input portion moves a first distance upon receiving an external force, the displacement input portion forces at least one of the amplification mechanisms to rotate, so that the at least one of the amplification mechanisms The rotation of the force point further drives the displacement output portion to move a second distance, the second distance being greater than the first distance; wherein at least one of the elastic portions is stretched by the displacement input portion for the first distance. To store an elastic force that tends to return the displacement amplifier to its original position.

In summary, the displacement amplifying device and the displacement amplifier disclosed in the embodiments of the present invention use the displacement amplifier as an integrally formed component (including an elastic portion) to avoid the displacement of the displacement output portion from being assembled. The effect of some small tolerances, and the integrally formed displacement amplifier can further achieve the effect of reducing production costs.

In order to further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention, but these descriptions and drawings are only used to illustrate the present invention, and not to make any limitation to the scope of the present invention limit.

100‧‧‧Displacement amplification device

1‧‧‧ Displacement Amplifier

11‧‧‧Inner frame

111‧‧‧ base

112‧‧‧ support

1121‧‧‧Outer elastic arm

12‧‧‧Displacement input section

121‧‧‧Driver

122‧‧‧Inner elastic arm

13‧‧‧Elastic section

14‧‧‧ Enlargement mechanism

141, 141 ’‧‧‧ pivot

142, 142’‧‧‧ force points

143, 143’‧‧‧ force points

15‧‧‧Displacement output section

151‧‧‧Trigger Block

152‧‧‧Buffer arm

2‧‧‧Actuator

21‧‧‧Fixed end

22‧‧‧Driver

3‧‧‧ Outer frame

31‧‧‧perforation

200‧‧‧ To be triggered

S‧‧‧ accommodation space

N‧‧‧ gap

L‧‧‧ straight direction

F‧‧‧ external force

FIG. 1 is a schematic perspective view of a displacement magnifying device according to a first embodiment of the present invention.

FIG. 2 is a schematic sectional view of FIG. 1 along the section line II-II.

FIG. 3 is an exploded view of FIG. 1.

FIG. 4 is a schematic plan view of the displacement amplifier in FIG. 1.

FIG. 5 is a schematic diagram of the operation of the displacement amplifier of FIG. 4.

FIG. 6 is a partial operation schematic diagram of FIGS. 4 and 5.

FIG. 7 is a schematic diagram (1) of changes in the displacement amplifier according to the first embodiment of the present invention.

FIG. 8 is a schematic diagram of a variation of a displacement amplifier according to the first embodiment of the present invention (II).

FIG. 9 is a schematic diagram (3) of changes in the displacement amplifier according to the first embodiment of the present invention.

FIG. 10 is a schematic diagram of a variation (fourth) of the first embodiment of the displacement amplifier of the present invention.

FIG. 11 is a schematic diagram (1) of a displacement amplifier and an actuator according to the second embodiment of the present invention.

FIG. 12 is a schematic diagram (2) of a displacement amplifier and an actuator according to the second embodiment of the present invention.

13 is a schematic diagram of a displacement amplifier and an outer frame according to a third embodiment of the present invention.

Please refer to FIG. 1 to FIG. 13, which are embodiments of the present invention. It should be noted that this embodiment corresponds to the related quantities and appearances mentioned in the drawings, and is only used to specifically describe the embodiments of the present invention. To facilitate understanding of the content of the invention, not to limit it The scope of protection of the invention.

[Example 1]

As shown in FIG. 1 to FIG. 10, it is a first embodiment of the present invention. This embodiment discloses a displacement amplifying device 100, which is suitable to be applied to a device that needs to use a displacement to reach an opening / closing entrance, such as a jetting valve in a dispensing device. However, the application of the displacement amplifying device 100 of the present invention is not limited to this. Limited. The displacement amplifying device 100 includes a displacement amplifier 1, an actuator 2 installed on the displacement amplifier 1, and an outer frame 3 installed on the outside of the displacement amplifier 1 and the actuator 2.

It should be noted that the displacement amplifier 1 of this embodiment is described by using an actuator 2 and an outer frame 3, but the present invention is not limited thereto. For example, in other embodiments not shown in the present invention, the displacement amplifier 1 may also be used alone (eg, sold) or used with other components (eg, with a driving component other than the actuator 2). ). In the following, the components of the displacement amplifying device 100 and their connection relationships will be introduced.

As shown in FIG. 1 to FIG. 3, the displacement amplifier 1 is described with a metal displacement amplifier in this embodiment, and it is a one-piece component integrally formed, and the displacement amplifier 1 is preferably processed. A metal plate is directly made, and the displacement amplifier 1 does not include any assembly points, but the structure of the displacement amplifier 1 of the present invention is not limited thereto. In addition, in other embodiments not shown in the present invention, the displacement amplifier 1 may also be made by 3D printing or the like. Further, the displacement amplifier 1 referred to in this embodiment is any displacement amplifier excluding a multi-piece combination.

Furthermore, in this embodiment, the displacement amplifier 1 is 180 degrees rotationally symmetric with respect to the linear direction L, that is, the displacement amplifier 1 is disposed substantially mirror-symmetrically with respect to the linear direction L, but the displacement of the present invention The specific structure of the amplifier 1 is not limited to this.

The displacement amplifier 1 in this embodiment includes an inner frame 11 and a displacement. The input portion 12, the plurality of elastic portions 13, the plurality of magnifying mechanisms 14, and a displacement output portion 15. The plurality of elastic portions 13 are connected to the inner frame 11 and the displacement input portion 12, and each of the magnifying mechanisms 14 is connected to the inner frame 11, the displacement input portion 12, and the displacement output portion 15. It should be noted that the word “multiple” used to describe the number of components in this embodiment is described by two, but the word “multiple” used in the present invention is not limited to two (for example, it is at least one).

As shown in FIG. 4, the inner frame 11 includes a base portion 111 and a plurality of support portions 112 connected to the base portion 111, and the base portion 111 and the plurality of support portions 112 define an accommodation space S on the inside. In this embodiment, the base portion 111 and each support portion 112 each have a long shape, and the two support portions 112 are respectively vertically connected to two ends of the base portion 111 (such as the base portion in FIG. 4). 111 left and right ends) to form a U-shaped structure together.

The displacement input portion 12 is generally located in the accommodating space S of the inner frame 11, and the displacement input portion 12 is disposed opposite (or facing) the base portion 111. The plurality of elastic portions 13 are disposed in the accommodating space S at a distance from each other, and one end of each elastic portion 13 (eg, the top end of the elastic portion 13 in FIG. 4) is connected to the base portion 111. One end (eg, the bottom end of the elastic portion 13 in FIG. 4) is connected to the displacement input portion 12.

In this embodiment, the displacement input portion 12 is elongated and is horizontally disposed at the opening of the U-shaped structure, and two ends of the displacement input portion 12 are spaced apart from and opposite to the two ends of the base 111, respectively. Ortho set. Furthermore, each of the elastic portions 13 has a long shape, and a length direction thereof is substantially perpendicular to the base portion 111 and the displacement input portion 12. The two elastic portions 13 are respectively connected to two ends of the displacement input portion 12 (the end surfaces of the displacement input portion 12 facing the base portion 111), and the two elastic portions 13 are spaced apart from and adjacent to the two support portions 112, respectively.

To put it another way, the displacement input portion 12 and the two elastic portions 13 also form a U-shaped structure, and the U-shaped structure is oppositely provided on the inner frame 11. Within the structure, two elongated grooves are formed between the two support portions 112 of the inner frame 11 and the U-shaped structure composed of the displacement input portion 12 and the two elastic portions 13. Among them, the thickness of each elastic portion 13 is preferably smaller than the thickness of the base portion 111 (or the supporting portion 112), but the present invention is not limited thereto.

As shown in FIG. 4, each magnifying mechanism 14 includes a rotation fulcrum 141, a force application point 142, and a force receiving point 143 approximately between the rotation fulcrum 141 and the force application point 142. Wherein, the length of a force arm of the force application point 142 relative to the rotation fulcrum 141 divided by the length of a force arm of the force application point 143 relative to the rotation fulcrum 141. The ratio is preferably between 3 and 5, but the above ratio It can also be adjusted or changed according to the needs of the designer, and is not limited to this embodiment.

In addition, the plurality of amplifying mechanisms 14 are located outside the accommodating space S of the inner frame 11, and portions of the amplifying mechanism 14 provided with the force application points 142 are spaced apart from each other and adjacent to each other. The rotation fulcrum points 141 of the plurality of magnification mechanisms 14 are respectively connected to the plurality of support portions 112 of the inner frame 11, and the force receiving points 143 of the plurality of magnification mechanisms 14 are connected to the displacement input portion 12, and the plurality of magnification mechanisms 14 The force application point 142 is connected to the displacement output portion 15.

In this embodiment, the rotation fulcrum 141 and the force receiving point 143 of each magnifying mechanism 14 are located substantially on the same plane, but the distance between the force applying point 142 and the base 111 is smaller than the rotation fulcrum 141 (or the force receiving point 143) and The distance of the base 111. In addition, the plurality of magnifying mechanisms 14 may collectively surround a gap N defined at a portion adjacent to each other (that is, a portion of the magnifying mechanism 14 provided with the force application point 142). Furthermore, the displacement output portion 15 is disposed in the notch N and is located in the linear direction L, and the bottom edge of the displacement output portion 15 is preferably shared with the bottom edges of the plurality of magnifying mechanisms 14. Flat set.

Furthermore, each supporting portion 112 includes an outer elastic arm 1121 connected to the corresponding rotation fulcrum 141. The displacement input portion 12 includes a driving block 121 connected to the elastic portions 13 and a plurality of driving blocks 121 connected to the driving blocks 121. The inner elastic arms 122 are connected to the force receiving points 143 of the multiple amplifying mechanisms 14. The displacement output portion 15 includes a trigger block 151 and a plurality of buffer arms 152 connected to the trigger block 151, and the plurality of buffer arms 152 are respectively connected to the force application points 142 of the multiple amplification mechanisms 14. The thicknesses of the outer elastic arm 1121, the inner elastic arm 122, and the buffer arm 152 are all thin, so as to be suitable for elastic deformation. In addition, in other embodiments not shown in the present invention, the supporting portion 112 and the outer elastic arm 1121 may also be thin structures.

It should be noted that although the displacement amplifier 1 of this embodiment is described by providing both an outer elastic arm 1121, an inner elastic arm 122, and a buffer arm 152, but in other embodiments not shown in the present invention, the The displacement amplifier 1 may optionally be provided with the aforementioned outer elastic arm 1121, the inner elastic arm 122, or the buffer arm 152.

According to the above, as shown in FIGS. 4 to 6, when the displacement input portion 12 of the displacement amplifier 1 receives an external force F (the external force F is applied by, for example, the following actuator 2) and along the straight line When moving a first distance in the direction L, the displacement input portion 12 forces the plurality of magnifying mechanisms 14 to rotate, so that the force applying points 142 of the plurality of magnifying mechanisms 14 rotate (eg, the two force applying points 142 'in FIG. 5). (Compared to the positions of the two application points 142 in FIG. 4, it is equivalent to rotating in opposite directions), and then collectively drives the displacement output portion 15 to move along the linear direction L by a distance greater than the first distance. The second distance.

Wherein, when the displacement input portion 12 moves a first distance, each elastic portion 13 is stretched by the displacement input portion 12 for the first distance, so as to store a value that tends to return the displacement amplifier 1 to its original position. Elastic force.

Further, as shown in FIG. 4 and FIG. 5, when the displacement input portion 12 forces the plurality of magnifying mechanisms 14 to rotate, each of the outer elastic arms 1121 is bent outward so that the corresponding rotation fulcrum 141 thereof is directed toward Outward movement (as shown in FIG. 5, the position of the fulcrum 141 ′ after the movement); each inner elastic arm 122 is bent outward so that the corresponding force point 143 moves outward (as shown in FIG. 5, Position 143 'after moving the force); multiple The buffer arm 152 receives a force to jointly drive the trigger block 151 to move in a linear direction L.

According to this, during the process of the displacement input portion 12 forcing the plurality of magnifying mechanisms 14 to rotate, the displacement amplifier 1 moves outward through the plurality of rotation fulcrum points 141 so that the moving path of each force application point 142 is relatively small. Approaching a straight line (as shown in FIG. 6, the force application point 142 before the movement and the force application point 142 ′ after the movement are approximately linear movements), and each force application point 142 can produce a large movement The distance (that is, the moving distance of the application point 142 is slightly larger than the product of the first distance and the ratio).

It should be additionally noted that the specific shapes of the plurality of elastic portions 13 of the displacement amplifier 1 may be adjusted and changed according to design requirements, and are not limited to those shown in FIG. 4. For example, the plurality of elastic portions 13 of the displacement amplifier 1 may also have a structure as shown in any one of FIGS. 7 to 10.

In addition, the plurality of elastic portions 13 of the displacement amplifier 1 in this embodiment are described with the same or symmetrical outer shape, but the present invention is not limited thereto. For example, in other embodiments not shown in the present invention, the plurality of elastic portions 13 of the displacement amplifier 1 may be formed into structures with the same or close elastic coefficient, but they are different from each other in shape.

As shown in FIG. 1 to FIG. 3, the actuator 2 is located in the accommodating space S of the inner frame 11 and is disposed inside the plurality of elastic portions 13. The actuator 2 is elongated and includes a fixed end 21 (such as the top of the actuator 2 in FIG. 2) and a driving end 22 (such as the actuator 2 in FIG. 2) at opposite ends. (Bottom end), and the fixed end 21 is connected to the base portion 111 of the inner frame 11, and the driving end 22 is connected to the displacement input portion 12 (the driving block 121).

Accordingly, when the actuator 2 applies a force to the displacement input portion 12 of the displacement amplifier 1, the displacement input portion 12 moves a first distance along the linear direction L and forces the plurality of magnification mechanisms 14 to rotate to Rotate the urging points 142 of the plurality of magnifying mechanisms 14 to jointly drive the displacement output portion 15 to move the second in the linear direction L distance.

As shown in FIG. 1 to FIG. 3, the outer frame 3 in this embodiment is a rectangular frame and is formed with a perforation 31 for receiving a to-be-trigger piece 200 (such as a firing pin in a dispensing system). Wherein, the displacement amplifier 1 and the actuator 2 are located in the outer frame 3, the inner frame 11 (the base portion 111) is fixed to the outer frame 3, and a space is left between the displacement output portion 15 and the outer frame 3. A third distance greater than the second distance, and the displacement output portion 15 (the trigger block 151) faces the perforation 31.

Furthermore, when the actuator 2 applies a force to the displacement input portion 12 of the displacement amplifier 1, the displacement output portion 15 (the trigger block 151) moves in a linear direction L and toward the perforated 31 side, and Abutting on the to-be-triggered component 200 so that the to-be-triggered component 200 can move along the linear direction L.

In addition, the actuator 2 in this embodiment is described using a piezoelectric actuator (Piezo Actuator), but in other embodiments not shown in the present invention, the actuator 2 may also be a hydraulic cylinder or Other components such as pneumatic cylinders.

[Example 2]

As shown in FIG. 11 and FIG. 12, this is the second embodiment of the present invention. This embodiment is similar to the first embodiment, so the same points of the two embodiments are not described again, and this embodiment is compared with the first embodiment. The main difference is that the displacement amplifier 1 of this embodiment is not a symmetrical structure. To put it another way, the displacement of the displacement input portion 12 or the displacement output portion 15 of the displacement amplifier 1 of this embodiment does not limit the movement along the linear direction L.

Specifically, as shown in FIG. 11, the structure of the displacement amplifier 1 shown is equivalent to that the word “multiple” used in describing the number of components in the first embodiment is reduced to one, but the present invention is not limited thereto. That is, the number of components of the displacement amplifier 1 in the present invention can be adjusted and changed according to design requirements; as shown in FIG. 12, the displacement amplifier 1 can also be composed of two elastic portions 13 coupled to one amplification mechanism 14.

[Example Three]

As shown in FIG. 13, this is the third embodiment of the present invention. This embodiment is similar to the first embodiment described above, so the same points of the two embodiments are not repeated, and the differences between this embodiment and the first embodiment are mainly The reason is that the displacement amplifier 1 of this embodiment is a one-piece member integrally formed with the outer frame 3, that is, the inner frame 11 of the displacement amplifier 1 is (integratively) connected to the outer frame 3. In addition, the buffer arm 152 in this embodiment is described in a substantially J shape, but the shape of the buffer arm 152 can also be adjusted according to design requirements. For example, in other embodiments not shown in the present invention, the buffer arm 152 may be substantially U-shaped.

[Technical effect of the embodiment of the present invention]

In summary, the displacement amplifying device 100 and the displacement amplifier 1 disclosed in the embodiment of the present invention are integrally formed by the displacement amplifier 1 (including the elastic portion 13), so as to avoid the displacement output portion 15 The amount of displacement is affected by slight tolerances caused by assembly, and the integrally formed displacement amplifier 1 can further achieve the effect of reducing production costs.

Further, the displacement amplifier 1 may be a single-piece component integrally formed with the outer frame 3, thereby further improving the displacement accuracy of the displacement output portion 15 and reducing the production cost.

Furthermore, the displacement amplifying device 100 and the displacement amplifier 1 disclosed in the embodiment of the present invention can drive the displacement output portion 15 by a plurality of amplifying mechanisms 14 to linearly generate the linear displacement generated by the displacement input portion 12 to ensure the described The displacement of the displacement output portion 15 can be kept linear and has a displacement amplification effect.

In addition, during the process that the displacement input portion 12 forces at least one amplification mechanism 14 to rotate, the displacement amplifier 1 can also move outward through the rotation fulcrum 141 to make the moving path of the force application point 142 closer to The straight line can further ensure that the displacement of the displacement output portion 15 can be kept in a straight shape, and can make the application point 142 have a larger moving distance.

The above description is only the preferred and feasible embodiments of the present invention, and is not intended to limit the protection scope of the present invention. Any equivalent changes and modifications made according to the patent scope of the present invention shall fall within the protection scope of the claims of the present invention.

Claims (10)

A displacement amplifying device includes: a displacement amplifier, which is an integrally formed component, and the displacement amplifier includes: an inner frame including a base portion and at least one support portion connected to the base portion, and the base portion and at least one A supporting space is defined in common on an inner side of the supporting portion; at least one elastic portion is disposed in the receiving space, and one end of at least one of the elastic portions is connected to the base portion; a displacement input portion is connected to At least one other end of the elastic portion; at least one amplification mechanism including a rotation fulcrum, a force receiving point, and a force application point, the rotation fulcrum of at least one amplification mechanism is connected to at least one of the support portions And the force receiving point of at least one of the amplification mechanisms is connected to the displacement input portion; and a displacement output portion is connected to the force applying point of at least one of the amplification mechanisms; and an actuator is provided at At least one side of the elastic portion, and the actuator includes a fixed end and a driving end at opposite ends, and the fixed end is connected to the base portion, so The driving end is connected to the displacement input portion; wherein when the actuator applies a force to the displacement input portion, the displacement input portion moves a first distance and forces at least one of the magnification mechanisms to rotate to Rotating the force application point of at least one of the amplifying mechanisms, thereby driving the displacement output portion to move a second distance, the second distance being greater than the first distance; wherein at least one of the elastic portions is moved by The displacement input portion stretches the first distance to store an elastic force that tends to return the displacement amplifier to its original position. The displacement amplifying device according to claim 1, wherein at least one of the support portions includes an outer elastic arm connected to the corresponding fulcrum; when the displacement input portion forces at least one of the magnifying mechanisms to rotate , The outer elastic arm is bent outward, so that the corresponding fulcrum of the rotation moves outward. The displacement amplifying device according to claim 1, wherein the displacement input section includes a driving block and at least one internal elastic arm connected to the driving block, and the driving block is connected to the actuator of the actuator. A driving end, and at least one of the inner elastic arms is connected to the force receiving point of at least one of the magnifying mechanisms; when the displacement input portion forces at least one of the magnifying mechanisms to rotate, at least one of the inner elastic arms faces Bend outward to move the corresponding stress point outward. The displacement amplifying device according to claim 1, wherein the displacement output unit includes a trigger block and at least one buffer arm connected to the trigger block, and at least one of the buffer arms is connected to at least one of the amplification mechanisms. The force application point; when the displacement input portion forces at least one of the amplification mechanisms to rotate, at least one of the buffer arms is forced to drive the trigger block to move in a straight line direction. The displacement amplifying device according to claim 1, wherein the number of at least one of the supporting portions, the number of at least one of the elastic portions, and the number of at least one of the amplifying mechanisms are each further limited to two, and the The displacement amplifier is roughly mirror-symmetrical. The displacement amplifying device according to claim 1, wherein the displacement amplifier is directly manufactured by processing a metal plate, and the displacement amplifier does not include any assembly points. The displacement magnification device according to claim 1, wherein the displacement magnification device further includes an outer frame, and the outer frame is formed with a perforation for accommodating a to-be-triggered component; wherein the inner frame is connected to In the outer frame, a third distance greater than the second distance is left between the displacement output portion and the outer frame, and the displacement output portion faces the perforation. A displacement amplifier is an integrally formed, one-piece component, and the displacement amplifier includes: an inner frame including a base portion and at least one support portion connected to the base portion, and the base portion and at least one support portion A common accommodation space is defined on the inside; at least one elastic part is disposed in the accommodation space, and one end of at least one of the elastic parts is connected to the base part; a displacement input part is connected to at least one of the The other end of the elastic portion; at least one magnification mechanism including a rotation fulcrum, a force receiving point, and a force application point, the rotation fulcrum of at least one amplification mechanism is connected to at least one of the support portions, and at least one The force receiving point of the amplification mechanism is connected to the displacement input portion; and a displacement output portion is connected to the force application point of at least one of the amplification mechanisms; wherein when the displacement input portion receives an external force When moving a first distance, the displacement input unit forces at least one of the amplifying mechanisms to rotate, so that the force application point of at least one of the amplifying mechanisms rotates, and then drives The displacement output portion moves a second distance, and the second distance is greater than the first distance; wherein at least one of the elastic portions is stretched by the displacement input portion by the first distance to store a tendency to make An elastic force of the displacement amplifier to return to the original position. The displacement amplifier according to claim 8, wherein at least one of the support portions includes an outer elastic arm connected to the corresponding pivot point, and the displacement input portion includes a driving block and is connected to the driving block. At least one inner elastic arm, and at least one of the inner elastic arms is connected to the force receiving point of at least one of the magnifying mechanisms; when the displacement input portion forces at least one of the magnifying mechanisms to rotate, the outer elasticity The arms are bent outward so that the corresponding fulcrum of the rotation is moved outward, and at least one of the inner elastic arms is bent outward so that the corresponding stress point is moved outward. The displacement amplifier according to claim 9, wherein the displacement amplifier is directly manufactured by processing a metal plate, and the displacement amplifier does not include any assembly points.