US-12624679-B2 - Power generator and fluid supply device having the same

Abstract

A power generator is provided including a first outer case in which an internal space is formed; a first mainspring module having a first spring providing rotational force as it is wound and unwound; a first inner case which covers the first mainspring module and rotates about a rotation axis according to the rotational force provided by the first spring; a second outer case in which an internal space is formed and disposed on the first outer case; a second mainspring module having a second spring providing rotational force as it is wound and unwound; a second inner case which covers the second mainspring module and rotates about the rotation axis according to the rotational force provided by the second spring; and a first holder module coupled to the first outer case to limit the unwinding of the first spring until the unwinding of the second spring is completed.

Inventors

• Joong Ho Shin
• Won Han
• Se Been Park

Assignees

• PUKYONG NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION

Dates

Publication Date

20260512

Application Date

20240607

Priority Date

20230608

Claims (18)

1. 1 . A power generator, comprising: a first outer case in which a first internal space is formed; a first mainspring module which has a first spring that provides a rotational force as it is wound and unwound by rotation; a first inner case which covers the first mainspring module and rotates in a rotational direction about a rotation axis according to the rotational force provided by the first spring; a second outer case in which a second internal space is formed and which is disposed on one direction side of the first outer case; a second mainspring module which has a second spring that provides a rotational force as it is wound and unwound by rotation; a second inner case which covers the second mainspring module and rotates in the rotation direction about the rotation axis according to the rotational force provided by the second spring; and a first holder module which is coupled to the first outer case to limit the unwinding of the first spring until the unwinding of the second spring is completed, wherein the first mainspring module further comprises a first escapement is connected to the first spring and rotates by the rotational force provided by the first spring and having a plurality of teeth formed at predetermined intervals along a periphery, and wherein the first holder module can limit rotation of the first escapement, wherein the first holder module comprises a first holder whose one end extends to be positioned between a plurality of teeth of the first escapement, and wherein the first inner case has a first inner case opening which is formed to provide a space such that the first holder can be positioned between the teeth of the first escapement.
2. 2 . The power generator of claim 1 , wherein the first mainspring module further comprises a first mainspring housing in which the first spring and the first escapement are disposed and which is disposed in the first internal space.
3. 3 . The power generator of claim 1 , wherein the first mainspring module further comprises a first escapement machine which is coupled between the first spring and the first escapement to rotate the first escapement at a predetermined rotation speed.
4. 4 . The power generator of claim 1 , wherein the first holder comprises a pair of first fixing protrusions which respectively protrude in the one direction and in an opposite direction of the one direction, wherein the first outer case has a first seating groove which is formed on one side, and wherein the first holder module further comprises a first holder case which is seated in the first seating groove and is formed with a fixing hole into which the first fixing protrusion can be inserted, and a first holder cover which is coupled to the first holder case with the first holder in the center and is formed with a fixing hole into which the first fixing protrusion can be inserted.
5. 5 . The power generator of claim 4 , wherein the first outer case further comprises a pair of first guide grooves which extend in the one direction on a rotation direction side of the first seating groove and on an opposite direction side of the rotation direction, and wherein the first holder case further comprises a first guide rail which is inserted into the first guide groove on the rotation direction side of the first seating groove and on the opposite direction side of the rotation direction.
6. 6 . The power generator of claim 4 , wherein the first holder case has a first holder case opening which is formed to provide a space in which the first holder is placed, and wherein the first holder cover has a pair of first depressions which are formed such that the rotation direction side of the first holder case opening and the opposite direction side of the rotation direction can be inserted.
7. 7 . The power generator of claim 6 , wherein the first holder case is formed such that the thickness becomes thinner as the ends of the rotation direction side of the first holder case opening and the opposite direction side of the rotation direction approach each other.
8. 8 . The power generator of claim 4 , wherein the other end of the first holder extends, and wherein the first holder module further comprises a first elastic body which is disposed on the opposite direction side of the rotation direction of the other end of the first holder and elastically deformed by the other end of the first holder as the first holder pivots.
9. 9 . The power generator of claim 8 , wherein the first holder module further comprises a second elastic body which is disposed on the rotation direction side of the other end of the first holder and elastically deformed by the other end of the first holder as the first holder pivots.
10. 10 . The power generator of claim 8 , wherein the first holder further has a pair of first guide protrusions at the other end which respectively protrude in the one direction and the opposite direction of the one direction, wherein the first holder case has a first holder case slot into which the first guide protrusion is inserted and which extends to guide the holder as the first holder rotates the first fixing protrusion about a rotation axis, and wherein the first holder cover has a first holder cover slot into which the first guide protrusion is inserted and which extends to guide the holder as the first holder rotates the first fixing protrusion about a rotation axis.
11. 11 . The power generator of claim 4 , wherein the first holder case is formed integrally with the first outer case.
12. 12 . The power generator of claim 1 , wherein the second inner case comprises a first bar which protrudes from an outer surface of the second inner case to a space between the first inner case and the first outer case, and wherein the first bar presses one end of the first holder as the second inner case rotates in the rotation direction by the second mainspring module such that one end of the first holder is separated from between a plurality of teeth of the first escapement.
13. 13 . The power generator of claim 12 , wherein the first inner case has a first stopper which protrudes toward the second inner case, wherein the second inner case has a second stopper which protrudes toward the first inner case, and wherein the second spring is in an unwound state while an end of the second stopper on the opposite direction side of the rotation direction is in contact with an end of the first stopper on the rotation direction side, and is in a wound state while an end of the second stopper on the rotation direction side is in contact with an end of the first stopper on the opposite direction side of the rotation direction.
14. 14 . The power generator of claim 13 , wherein the first bar is positioned on the rotation direction side of the first holder in the wound state, and rotates around the rotation axis as the second spring is unwound to separate the first holder from the teeth of the first escapement such that the first spring is unwound so as to be positioned on the opposite direction side of the rotation direction of the first holder in the wound state.
15. 15 . The power generator of claim 1 , further comprising: a third outer case in which a third internal space is formed and which is disposed between the second outer case and the first outer case; a third mainspring module which has a third spring that provides a rotational force by winding and unwinding by rotation, and a third escapement which is connected to the first spring, rotates by the rotational force provided by the first spring and has a plurality of teeth formed at predetermined intervals along a periphery; a third inner case which covers the third mainspring module and rotates in the rotation direction about the rotation axis according to the rotational force provided by the third spring; and a third holder module which has a third holder that extends such that one end can be positioned between a plurality of teeth of the third escapement to limit the unwinding of the third spring until the unwinding of the third spring is completed, and is coupled to the third outer case, wherein the third inner case has a first inner case opening which provides a space such that the first holder can be positioned between the teeth of the first escapement.
16. 16 . The power generator of claim 15 , wherein the second inner case has a first bar which protrudes from an outer surface of the second inner case to a space between the third inner case and the third outer case, wherein the third inner case has a second bar which protrudes from an outer surface of the third inner case to a space between the first inner case and the first outer case, wherein the first bar presses one side of one end of the third holder as the second inner case rotates in the rotation direction by the second mainspring module such that one end of the third holder is separated from between a plurality of teeth of the third escapement, and wherein the second bar presses one side of one end of the first holder as the third inner case rotates in the rotation direction by the third mainspring module such that one end of the first holder is separated from between a plurality of teeth of the first escapement.
17. 17 . A fluid supply device having a power generator, comprising: the power generator according to claim 1 ; a housing in which the power generator is fixed on one side; an injector comprising a piston which is fixed to the housing and a syringe which is coupled to the piston; a main gear which is positioned on the one direction side of the second inner case of the power generator and rotates together with the second inner case; and a rack gear which is coupled to the main gear and translates the syringe through a rotational force generated by the power generator.
18. 18 . The fluid supply device of claim 17 , further comprising: at least one leg block which is provided to be able to be coupled to the other side of the housing, wherein the at least one leg block has a height equal to a height of the power generator in the one direction.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims priority to and the benefit of Korean Patent Application No. 10-2023-0073822, filed on Jun. 8, 2023, the disclosure of which is incorporated herein by reference in its entirety. TECHNICAL FIELD The present invention relates to a power generator and a fluid supply device having the same. BACKGROUND ART Processes such as blood testing, bacterial detection, environmental monitoring and the like using microfluidic devices require the injection and manipulation of small amounts of fluid. Accordingly, fluid injection is performed by using a fluid supply device. However, commonly used electric fluid supply devices operate automatically according to power supply. Accordingly, electric fluid supply devices are inevitably expensive as they are equipped with a large number of electric components, and since it is not easy to provide them at each site where fluid injection is required, there has been a problem in that it is difficult to perform microfluidic technology-based blood testing, bacterial detection, environmental monitoring and the like at sites that are not equipped with an electric fluid supply device. In addition, since the electric fluid supply device operates automatically according power supply, it could not be operated in situations where power was not supplied due to a power outage and the like, and thus, there has been a problem in that it is difficult to perform blood testing, bacteria detection, environmental monitoring and the like. DISCLOSURE Technical Problem The present invention has been devised to solve the above problems, and an object of the present invention is to provide a power generator that can continuously provide power for a certain period of time even in the absence of power supply, and a fluid supply device having the same. In addition, an object of the present invention is to provide a power generator that can control the time for providing power as needed, and a fluid supply device having the same. In addition, an object of the present invention is to provide a power generator that can continuously provide power by controlling the springs of a plurality of mainspring modules to be sequentially unwound, and a fluid supply device having the same. The problems of the present invention are not limited to the problems mentioned above, and other problems that are not mentioned will be clearly understood by those skilled in the art from the description below. Technical Solution According to one aspect of the present invention, provided is a power generator, including a first outer case in which a first internal space is formed; a first mainspring module which has a first spring that provides a rotational force as it is wound and unwound by rotation; a first inner case which covers the first mainspring module and rotates in a rotational direction about a rotation axis according to the rotational force provided by the first spring; a second outer case in which a second internal space is formed and which is disposed on one direction side of the first outer case; a second mainspring module which has a second spring that provides a rotational force as it is wound and unwound by rotation; a second inner case which covers the second mainspring module and rotates in the rotation direction about the rotation axis according to the rotational force provided by the second spring; and a first holder module which is coupled to the first outer case to limit the unwinding of the first spring until the unwinding of the second spring is completed. In this case, the first mainspring module may be connected to the first spring and rotates by the rotational force provided by the first spring, and further include a first escapement having a plurality of teeth formed at predetermined intervals along a periphery, and the first holder module can limit rotation of the first escapement. In this case, the first mainspring module may further include a first mainspring housing in which the first spring and the first escapement are disposed and which is disposed in the first internal space. In this case, the first mainspring module may further include a first escapement machine which is coupled between the first spring and the first escapement to rotate the first escapement at a predetermined rotation speed. In this case, the first holder module may include a first holder whose one end extends to be positioned between a plurality of teeth of the first escapement, and the first inner case may have a first inner case opening which is formed to provide a space such that the first holder can be positioned between the teeth of the first escapement. In this case, the first holder may include a pair of first fixing protrusions which respectively protrude in the one direction and in an opposite direction of the one direction, the first outer case may have a first seating groove which is formed on one side, and the first holder module may further include a first ho