KR200474615Y1 - Float switch - Google Patents

Abstract

The present invention relates to a float switch, and more particularly, to a float switch in which a body is formed, an upper portion of the body is formed with a fastening portion fastened and fixed to the outside, and a guide groove is formed in the body; A reed switch which is inserted into the fixing portion and which is seated in the guide groove and a magnet portion which transmits a magnetic force to the reed switch and which is integrally connected to the lower end portion of the magnet portion and is formed along the outer circumferential surface of the body portion, And a float formed at a lower end of the float and configured to move up and down the magnet part and the supporting part according to a water level.

Description

Float switch

The present invention relates to a float switch.

The present invention relates to a float switch, and in general, the present invention relates to a float switch, and more particularly, to a float switch used in a cooling water supply line of an automation machine or an automation line in which materials are applied in various industrial automation systems.

Float switch is a switch that is installed in air purifier, semiconductor equipment, automation system and storage tank and operates the input of other parts and other operations. It is a switch that can be used for fluid (water, hydraulic) or gas And it has been widely used in storage tanks for storing fluids.

"Float switch" of "Korean Patent Publication No. KR1998-045405A" is disclosed. The operating switch of " Korean Patent Publication No. KR1998-045405A " is mounted without being fixed inside. Therefore, there has been a problem that the operation switch is short-circuited or malfunction occurs due to an external shock (peripheral vibration, etc.).

KR1998-045405 a

It is an object of the present invention to provide a float switch for preventing the reed switch from being short-circuited or malfunctioning due to external impact by filling a filler having different rigidity with the guide groove in the inside of the fixing portion, The purpose is to provide.

It is another object of the present invention to provide a float switch that prevents the connecting portion (glass tube and electronic component) of the reed switch from being broken or malfunctioning by filling a filler having different rigidity with the guide groove in the inside of the fixed portion.

According to an embodiment of the present invention, there is provided a float switch comprising: a body portion; a fixing portion formed at an upper end of the body portion to be fastened and fixed to the outside and having a guide groove formed in the body portion; A reed switch which is inserted into the fixing portion and is seated in the guide groove, a magnet portion for transmitting a magnetic force to the reed switch is formed, and a supporting portion integrally connected to a lower end portion of the magnet portion and formed along an outer peripheral surface of the body portion, And a float formed on the magnet portion and the support portion to move up and down the magnet portion and the support portion according to the water level.

In the float switch according to an embodiment of the present invention, at least one or more guide grooves are formed at equal intervals in the body portion.

The float switch according to one embodiment of the present invention has a support tine such that the guide groove has a width larger than the thickness of the reed switch and protrudes into the fixing portion so as to support the reed switch on both sides.

In the float switch according to an embodiment of the present invention, the guide groove has a width larger than the thickness of the reed switch, and a groove is formed in the fixing portion so as to support the reed switch on both sides.

In the float switch according to one embodiment of the present invention, the guide groove is formed with an insertion portion into which the reed switch is inserted and a seating portion in which the reed switch is inserted and seated.

In the float switch according to one embodiment of the present invention, the width of the insertion portion into which the reed switch is inserted is formed to be larger than the width of the seat portion.

In the float switch according to an embodiment of the present invention, electrode pads for transmitting input and output are formed in the same line on the one end surface of the reed switch.

A float switch according to an embodiment of the present invention is arranged in a direction perpendicular to the electrode pad, and a connecting portion for transmitting electrical signals of input and output in one direction is formed.

According to an embodiment of the present invention, there is provided a float switch, wherein the reed switch comprises: a base substrate; An insulating layer formed on the base substrate; And a circuit layer formed on the insulating layer.

In the float switch according to one embodiment of the present invention, the insulating layer is formed using ABF (Ajinomoto Build-up Film), FR-4, BT (Bismaleimide Triazine) or epoxy resin.

In the float switch according to an embodiment of the present invention, the circuit layer is made of at least one of gold, silver, zinc, palladium, ruthenium, nickel, rhodium, lead / tin alloy and nickel / gold alloy.

The float switch according to an embodiment of the present invention is formed such that the reed switch is inserted into the guide groove, and at least one material having different rigidities is sequentially filled in the fixed portion.

In the float switch according to an embodiment of the present invention, the insertion portion and the seat portion are formed so that materials having different rigidities are sequentially filled.

In the float switch according to an embodiment of the present invention, about one third of the length of the guide groove is formed with the inserting portion, and about two thirds of the float switch is formed to form the seating portion.

In the float switch according to an embodiment of the present invention, the fixing portion is formed between the body portion and the coupling portion, and is formed to be larger than the outer diameter of the support portion, thereby forming a flange serving as a stopper.

In the float switch according to an embodiment of the present invention, the fixing portion is further formed with a coupling hole at the lower end of the body portion so that the flow portion does not fall into the lower end portion.

The features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.

Prior to that, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor may properly define the concept of the term in order to best explain its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

According to the present invention, there is an effect of preventing disconnection of the reed switch from external impact by filling filler materials having different rigidities inside the fixed portion.

Further, by filling the filler having different rigidities in the inside of the fixed portion, there is an effect of preventing the reed switch from falling to the outside when moving or pulling the connecting cable of the reed switch.

In addition, filling the filler having different stiffness in the inside of the fixture prevents the penetration of moisture and foreign matter into the fixture.

Also, filling the filler having different stiffness into the inside of the fixing part has the effect of blocking the occurrence of electric short due to penetration of moisture into the inside of the fixing part.

Further, filling the filler having different rigidity with the guide groove in the inside of the fixing portion has an effect of preventing breakage of the connecting portion (glass tube and electronic parts) in the case of external impact.

Further, by filling the filler having different rigidity with the guide groove in the fixed portion, there is an effect of preventing the rotation of the reed switch due to the rotation of the magnetic force by the flow of the fluid.

Further, by forming the guide groove in the fixing portion, the reed switch can be fixed inside the fixing portion.

Furthermore, by forming the reed switch from a flexible printed circuit board (FPCB), it provides a float switch that can precisely control the breakage preventing effect and the working distance by placing the connecting portion (glass and the electron portion) of the reed switch relative to the existing switch .

1 is a perspective view of a float switch according to an embodiment of the present invention;
Fig. 2 is a sectional view of Fig. 1,
3 is a partial sectional view of the fixing part according to the present invention,
4 is a cross-sectional view of the fixture of FIG. 3;
Fig. 5 is a first modification of the fixing portion of Fig. 4,
6 is a plan view of the reed switch according to the present invention,
FIG. 7 is a cross-sectional view of the reed switch shown in FIG. 2,
FIG. 8 is a state in which the filler is filled in the body part of FIG. 7,
Fig. 9 is a cross-sectional view of the flow portion rising along the water level, and
10 is a cross-sectional view of a state in which the flow portion descends according to the water level.

The objectives, specific advantages, and novel features of the present invention will become more apparent from the following detailed description and the preferred embodiments, which are to be taken in conjunction with the accompanying drawings. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. It will be further understood that terms such as "one side", "other side", "first", "second", etc. are used to distinguish one element from another element, no. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention, detailed description of related arts which may unnecessarily obscure the gist of the present invention will be omitted.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a perspective view of a float switch according to an embodiment of the present invention, FIG. 2 is a sectional view of FIG. 1, FIG. 3 is a partial sectional view of a fixing part according to the present invention, and FIG. 4 is a sectional view of a fixing part of FIG. 6 is a plan view of the reed switch according to the present invention, Fig. 7 is a cross-sectional view of the reed switch coupled to Fig. 2, and Fig. 8 is a cross- FIG. 9 is a cross-sectional view showing a state in which the flow portion rises according to a water level, and FIG. 10 is a cross-sectional view showing a state in which a flow portion is lowered according to a water level.

The present invention improves the reed switch of the float switch 10 and at the same time has durability against an external impact, and improves the reliability by reducing the malfunction of the float switch.

The float switch 10 according to the present invention is configured such that the float switch 10 is turned on according to the movement of the floating portion 200 moving up and down the outer peripheral surface of the fixed portion 100 according to the fixed portion 100 and the water level, And a reed switch 300 that turns off / off the reed switch 300.

Referring to Figs. 1 to 7, the fixing portion 100 is fixed to the outside. In this embodiment, the fixing part of the fixing part 100 is described as an indoor unit of the air conditioner as an example. This is not intended to limit the portion for fixing the fixing portion 100 to the indoor unit of the air conditioner.

The fixing part 100 has a fastening part 130 fastened and fixed to the outside at an upper end of the body part 110 and has a guide groove 150 formed in the body part 110.

A coupling part 130 is formed on the outer peripheral surface of the upper end of the body part 110 and a guide groove 150 is formed in the body part 110. The body part 110 is formed in a cylindrical shape and inserted into the moving part 200. This is not limitative of the shape of the body 110 but can be modified in various forms. The body 110 is formed to have a space into which the reed switch 300 is inserted. A coupling hole (not shown) is formed at the lower end of the body 110 so as not to be separated from the floating part 200.

A flange 190 is formed between the body 110 and the fastening part 130. The flange 190 serves as a stopper to prevent the moving part 200 from rising to the upper end. A guide groove 150 is formed in the body 110.

Referring to FIGS. 2 to 5, the guide groove 150 is formed inside the fixing portion 100. That is, the guide groove 150 is formed inside the body 110. The guide groove 150 is integrally formed with an upper end portion and a lower end portion of the body portion 110 (see FIG. 5).

At least one guide groove 150 is formed at an equal interval in the inner space of the body 110. The guide groove 150 protrudes into the fixing part 100 to support the reed switch 300 on both sides of the guide groove 150 so that the reed switch 300 can be easily inserted. The support jaw is formed to be wider than the thickness of the reed switch 300.

The guide groove 150 has a plurality of pairs of protruding portions inside the body 110. For example, when the pair of guide grooves 150 protrude from one pair, they may be formed at 0 ° and 180 °, or in the case of two pairs, 0 °, 90 °, 180 °, and 270 °.

 The guide groove 150 is formed with an insertion portion 152 into which the reed switch 300 is inserted and a seating portion 154 with the reed switch 300 seated thereon. The insertion portion 152 is formed to be larger than the width of the reed switch 300. This serves to guide the inserting portion 152 when inserting the reed switch 300 into the inside thereof. The seating portion 154 is formed to be smaller than the width of the inserting portion 152. This is for fixing the reed switch 300.

When the reed switch 300 is inserted into the guide groove 150, the fillers 171 and 173 are filled in the body 110 to increase the fastening force. At this time, it is appropriate that the fillers 171 and 173 are filled with different materials. This is because when the reed switch 300 is inserted into the guide groove 150, the fillers 171 and 173 are fixed inside the body portion. Further, the fillers 171 and 173 use materials having relatively different rigidity. For example, when the polymeric rubber, urethane, etc. are used as the filler material 173 of a rigid material, the filler material 171 of a flexible material may be a synthetic resin, a thermoplastic resin (PVC, PVA, PA, PS, ABS, PMMA, ) (See Fig. 8). That is, in the fillers 171 and 173, the inserting portion 152 and the seating portion 154 sequentially insert materials having different rigidities.

The guide groove 150 may have a width wider than the thickness of the reed switch 300 and a groove may be formed in the fixing portion 100 so as to support the reed switch 300 on both sides.

Referring to FIG. 6, the reed switch 300 is connected to a cable to turn on / off the air conditioner. The reed switch 300 is seated in the guide groove 150 while being inserted into the body 110.

The reed switch 300 is formed by laminating an insulating layer formed on a base substrate and a base substrate, and a circuit layer formed on an insulating layer. The base substrate and the insulating layer are formed by stacking at least one or more layers using ABF (Ajinomoto Build up Film), FR-4, BT (Bismaleimide Triazine), or epoxy resin. The circuit layer may be formed of at least one of gold, silver, zinc, palladium, ruthenium, nickel, rhodium, lead / tin alloy and nickel / gold alloy.

The reed switch 300 is formed with an electrode pad 310 for transmitting an input and an output to one end of the insulating layer. The electrode pad 310 is formed so that the circuit layer extends and has a large area. The electrode pad 310 is formed using the same material as the circuit layer. The input 312 and the output 314 terminals of the electrode pad 310 are formed on the same line horizontally. This is to receive a force when the electrode pad 310 is coupled. A connection portion 320 is formed which is disposed in a direction perpendicular to the electrode pad 310 and transmits electrical signals of input and output. This is to reduce the overall size of the float switch 10 by forming the connecting portion 320 in a vertical state. The connection part 320 may be formed in various shapes such as a glass tube and an electronic part.

A filler material 171 of a relatively soft material is filled in the lead groove 300 in the longitudinal direction in which the lead switch 300 is inserted into the guide groove 150 so that breakage of the reed switch (breakage of the glass tube and electronic parts) And the remainder is filled with the filler material 173 of relatively rigid material to prevent the reed switch 300 from falling to the outside as well as to prevent penetration of moisture and foreign matter into the inside of the reed unit ). At this time, it is appropriate to fill the reed switch 300 using the filling material 171 of the soft material more than the connecting portion 320. The connection part 320 is a glass tube and an electronic part, so that the damage to the external impact is reduced. therefore,

The filling material 173 of rigid material is suitably formed on the upper end of the fastening part 130. Further, the reed switch 300 may be fixed to a nut member (not shown) to fix the filler 173 of rigid material. This is to increase the fastening force between the reed switch 300 and the fixing part 100. [ At this time, the body 110 has three regions inside. A region where a rigid filler 173 for engaging the reed switch 300 with the nut member is set, a region filled with a filler 171 made of a soft material along the surface of the reed switch 300 and a region filled with a filler 171 made of a soft material ) May flow down by gravity and be partitioned into a set area. That is, the filler 173 of a rigid material may be formed on the insertion portion 152, and the filler 171 of a soft material may be formed on the seating portion 154.

The moving part 200 includes a magnet part 230 at the upper end of the supporting part 210 and a float 250 moving at the lower end of the supporting part 210 according to the level of the fluid.

The support part 210 supports the magnet part 230 and the float 250 so that the gap is maintained. The support portion 210 is formed to insert the body portion. At this time, the supporting part 210 moves up and down along the outer circumferential surface of the body part 110. That is, the support portion 210 is formed corresponding to the shape of the body portion 110.

At the upper end of the support part 210, a magnet part 230 for transmitting a magnetic force to the reed switch 300 is formed. A magnet for generating a magnetic force is formed inside the magnet portion 230. The magnet part 230 is formed along the outer circumferential surface of the support part 210. The magnet portion 230 may be formed in a circular or polygonal shape.

A float 250 is formed at the lower end of the supporting part 210. The float 250 moves according to the level of the fluid. The float 250 moves the support portion 210 and the magnet portion 230 upward or downward according to the water level. The float 210 is formed to be larger than the outer diameter of the support portion 210. This is because the float 210 supports the support portion 210. The float 250 is suitably made of a sponge-based material. In addition, buoyancy may be generated by filling the inside of the float 250 with air, or the float 250 may be formed of a material having a specific gravity lower than the specific gravity of water.

Hereinafter, a method of operating the float switch according to the present invention will be described in more detail with reference to the accompanying drawings. FIG. 9 is a cross-sectional view of a state in which the flow portion rises in accordance with a water level, and FIG. 10 is a cross-sectional view of a state in which a flow portion is lowered according to a water level.

The float switch 10 is mounted inside the indoor unit of the air conditioner. The float switch 10 senses the level of condensed water (W: fluid) generated in the air conditioner and turns on / off the operation of the air conditioner.

The fastening part 130 is fastened to the inside of the indoor unit of the air conditioner to fix the fixing part 100. When the condensed water inside the air conditioner is collected in one place, the water level of the condensed water (W: fluid) rises. At this time, the float 250 also rises by the height at which the water level of the condensed water (W: fluid) rises. The support portion 210 connected to the float 250 rises along the outer circumferential surface of the body portion 110. At this time, the magnet part 230 connected to the support part 210 also ascends at the same time.

 When the water level of the condensed water (W: fluid) rises to a certain height, the reed switch 300 and the magnets of the magnet portion 230 are brought close to each other (see FIG. 9). That is, the fixing unit 100 can not move, and the moving unit 200 approaches the reed switch 300. When the magnetic force generated in the magnet unit 230 of the moving unit 200 approaches the reed switch 300 by a predetermined distance or more, the reed switch 300 is turned on to turn off the operation of the air conditioner.

Conversely, when the water level of the condensed water (W: fluid) is lowered, the reed switch 300 and the magnets of the magnet portion 230 are separated from each other (see Fig. 10). That is, the fixing unit 100 can not move, and the moving unit 200 moves away from the reed switch 300. When the magnetic force generated in the magnet unit 230 of the moving unit 200 moves away from the reed switch 200 by a predetermined distance or more, the reed switch 300 blinks to turn on the operation of the air conditioner.

While the present invention has been described in detail with reference to specific embodiments thereof, it is to be understood that the present invention is not to be limited to the spindle motor according to the present invention. It will be apparent that modifications and improvements can be made by those skilled in the art.

It will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10: float switch 100:
110: body part 130: fastening part
150: Guide groove 152: Insertion part
154: seat part 160: filler
200: moving part 210: supporting part
230: Magnet part 250: Float
300: Reed switch 310: Electrode pad
330:

Claims (16)

A fixing part formed at an upper end of the body part with a fastening part fastened and fixed to the outside and having a guide groove formed in the body part;
A reed switch which is inserted into the fixing portion and is seated in the guide groove,
A magnet portion for transmitting a magnetic force to the reed switch and integrally connected to a lower end portion of the magnet portion to form a support portion formed along an outer circumferential surface of the body portion and a lower portion formed at a lower end portion of the support portion to vertically move the magnet portion and the support portion according to a water level And a flow portion having a formed float,
The guide groove
An insertion portion into which the reed switch is inserted;
A seat portion on which the reed switch is inserted and seated is formed,
The reed switch is inserted into the guide groove, and at least two materials having different rigidities are sequentially filled in the fixed portion.
The method according to claim 1,
Wherein the guide groove has at least one or more guide grooves while being equally spaced in the body.
The method according to claim 1,
Wherein the guide groove has a width larger than the thickness of the reed switch and has a supporting jaw protruding into the fixing portion so as to support the reed switch on both sides.
The method according to claim 1,
Wherein the guide groove has a width wider than the thickness of the reed switch and a groove is formed in the fixing portion so as to support the reed switch on both sides.
delete The method according to claim 1,
Wherein a width of an insertion portion into which the reed switch is inserted is larger than a width of the seat portion.
The method according to claim 1,
The reed switch is provided with electrode pads for transmitting input and output on the same side in the end portion of one side in order to evenly distribute the cyclic stress of the up and down movement according to the switch operation.

The method of claim 7,
And a connecting portion disposed in a direction perpendicular to the electrode pad and configured to transmit electrical signals of input and output in one direction.
The method of claim 7,
The reed switch
A base substrate;
An insulating layer formed on the base substrate;
And a circuit layer formed on the insulating layer.
The method of claim 9,
The insulating layer is formed using ABF (Ajinomoto Build up Film), FR-4, BT (Bismaleimide Triazine), or epoxy resin.
The method of claim 9,
Wherein the circuit layer is made of at least one of gold, silver, zinc, palladium, ruthenium, nickel, rhodium, lead / tin alloy and nickel / gold alloy.
delete The method according to claim 1,
Wherein the inserting portion and the seating portion are configured to sequentially fill materials having different rigidities.
14. The method of claim 13,
Wherein the insertion portion is formed by 1/3 of the length of the guide groove, and the seating portion is formed by 2/3.
The method according to claim 1,
The float switch is formed between the body portion and the fastening portion, and is formed to be larger than the outer diameter of the support portion, so that the flange serves as a stopper.
The method according to claim 1,
Wherein the fixing portion further includes a coupling hole at the lower end of the body so that the flow portion does not fall into the lower end portion.

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