KR20150057773A - Water Level Checking Device for Visual Impairment Person - Google Patents

Abstract

A water level checking device for a visually impaired person is provided. The present invention comprises: a main body unit including an inner main body positioned inside a container where a fluid is filled and an outer main body positioned in the outside of the container and held by an upper circumference of the container; a buoyancy unit assembled to be capable of vertically moving in the inner main body to be submerged in the fluid filled in the container or floating on the water surface to be moved in accordance with a water level change of the fluid; and a sensing unit connected to the buoyancy unit by means of a wire material having a predetermined length of which the direction is converted by at least one direction conversion member installed in the main body unit and assembled to be capable of vertically moving in the outer main body.

Description

Water Level Checking Device for Visual Impairment Person}

The present invention relates to a device for verifying the level of a liquid filled in a container by a visually impaired person, and more particularly to a device for verifying the level of a liquid filled in a container by a visually impaired person or a low vision person, To a liquid level detecting device for a visually impaired person who can easily and precisely control the liquid capacity in the container.

In general, visually impaired or low-sighted people with low vision, when drinking liquids such as water, milk, juice, coffee, tea, etc. in containers, it is very difficult to control the amount of liquid to be filled, Respectively.

In other words, since the liquid level of the liquid filled in the container can not be accurately measured by the naked eye, for example, the finger is put into the container, the water level is sensed by touch, or the sound generated when the liquid is filled in the container is audibly detected, In many cases.

However, such a method is unsanitary and it is difficult to measure the exact level for taking the liquid in the container. In addition, when the liquid is hot as hot water, the finger is immersed in hot water due to the risk of burning, I will not.

Particularly, when the blind or visually impaired low-vision person intends to take the powdered powder in water, it is very difficult to control the filling amount of the water filled in the container according to taste.

(Patent Document 1) KR10-2013-0037374 A

(Patent Document 2) KR10-2009-0070177 A

Patent Literature 1 discloses a melody cup for a visually impaired person in which a melody sound is output to detect a water level only when the liquid to be ingested is contained in a container made of a mug and a melody sound is not output when water is contained for washing the container .

However, in Patent Document 1, since the sensing means and the informing means are integrally provided in the container, there is a problem that it is difficult to accurately measure the water level and to adjust the amount of intake by measuring when the container is filled with the liquid .

Patent Document 2 discloses a liquid crystal display device having a pair of electrodes which are immersed in liquid when the liquid filled in the container reaches a preset liquid level, and a speaker which is operated when a pair of electrodes are energized. A water level detector is started.

However, although Patent Document 2 has a merit that it can be used in other containers and is portable, since a pair of electrodes are simultaneously immersed in water, in order to notify the water level by energization, water level notification is possible only at a position where a pair of electrodes are simultaneously locked There has been a problem in that it is difficult to control the capacity while accurately checking the change in the level of the liquid filled in the container.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a liquid container which is easy to carry and store and which can visually check the liquid level of the liquid filled in the container, The present invention provides a water level check device for a visually impaired person.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, unless further departing from the spirit and scope of the invention as defined by the appended claims. It will be possible.

As a specific means for achieving the above object, the present invention as a concrete means for achieving the above object is characterized by comprising an inner body located inside a container filled with a liquid and an outer body located outside the container A main body having a main body and being mounted on an upper edge of the container; A buoyant portion which is assembled to the inner body so as to be movable up and down so as to be immersed in the liquid to be filled in the container or floated on the surface of the inner body so as to be moved in accordance with a change in the level of the liquid; And a sensing part connected to the buoyancy part via a wire having a predetermined length and being vertically movable by the at least one direction switching element provided in the body part, And a water level detection device for a visually impaired person.

According to another aspect of the present invention, there is provided a liquid container comprising: an inner body positioned inside a container filled with a liquid; a main body placed on an upper edge of the container with an outer body positioned outside the container; An outer buoyant body which is immersed in the liquid filled in the vessel or floated on the water surface and is moved in accordance with a change in the level of the liquid, and an inner buoyant body which is vertically moved in the same direction by the magnetic force with the buoyant outer body, Buoyant parts possibly assembled; And a sensing unit connected to the inner moving body via a wire having a predetermined length and being vertically movable by the at least one direction switching member provided in the body, And a water level detection device for a visually impaired person.

Preferably, the inner main body includes a guide jaw to which the buoyancy part is assembled so as to be movable up and down, and a pair of right and left pairs of the wire rods connecting the buoyancy part and the sensing part are arranged side by side at regular intervals Of the present invention.

Preferably, the outer body is formed by recessing the guide grooves assembled so as to be movable up and down so that the sensing unit is opposed to each other, and the pair of right and left pairs of the wire rods are arranged side by side at regular intervals Of the present invention.

Preferably, a direction changing member for switching the traveling direction of the wire is provided between the inner body and the outer body, and a connecting body for connecting the inner and outer bodies.

More preferably, the connection body includes a pair of left and right horizontal plate members integrally connecting the upper end of the inner body and the outer body, and a space is formed between the pair of left and right horizontal plate members for guiding and moving the wire rod A spacer is provided.

Preferably, the inner body includes an upper cover and a lower cover which are made of a hollow body having an inner through hole through which the inner moving body is vertically movable, and which seal the opened upper and lower ends of the inner through hole .

Preferably, the outer body includes a hollow body through which the sensing unit communicates with the guide hole arranged to be movable up and down, and through which the slit hole is formed to open on the outer surface of the outer body.

Preferably, a connection main body having a direction switching member for switching the traveling direction of the wire rod is provided between the inner main body and the outer main body, and a connection hole communicating the inner vertical hole of the inner main body with the guide hole of the outer main body Respectively.

Preferably, the buoyancy portion includes a buoyant body having an assembling groove which is assembled in a guide jaw formed in the inner body so as to be difficult to be detached from the outer body, and which forms a gap between the guide jaws so that liquid in the container is interposed.

More preferably, the guide jaw has a stopper which interferes with the buoyant body at the upper and lower ends to limit vertical movement.

Preferably, the external buoyant body includes a body to be attracted to each other by a magnetic force of a constant intensity generated between the body and the external body, on one side of the body corresponding to the external surface of the body.

More preferably, one of the permanent magnet and the moving body is made of a permanent magnet having a magnetic force of a certain strength, and the other permanent magnet is made of another metal or a permanent magnet facing another pole with respect to the permanent magnet.

Preferably, the body portion further includes a fixing portion for elastically contacting the inner wall surface or the outer wall surface of the container to generate a fixing force for fixing the body portion.

Preferably, the fixing portion is provided with a projecting portion protruding in an arc shape on one side of the inner body facing the inner wall surface of the container or on one side of the outer body facing the outer wall surface of the container, Shaped resilient piece.

Preferably, the outer surface of the outer body adjacent to the sensing unit is provided with a point-like display unit for recognizing the change in height of the sensing unit by touch.

Preferably, the direction switching member includes a first switching member provided at a lower end of the inner body and in contact with the wire rod, and a second switching member provided in a connection body connecting between the inner body and the outer body, .

More preferably, the first switching member or the second switching member includes a roll formed by recessing a groove on which the wire rod is disposed in contact with the outer circumferential surface, and a shaft member that is respectively assembled to the inner body and the shaft support groove formed in the connection body do.

More preferably, the first switching member or the second switching member includes a rib having a predetermined length extending from the inner body or the connecting body so as to be in contact with the wire rod.

The present invention as described above has the following effects.

(1) a body portion which is fixed to an upper edge of the container, and a buoyancy portion and a buoyancy portion floating by the liquid filled in the container, and a sensing portion which is moved up and down, Can be indirectly checked through the sensing unit disposed outside the container to accurately check the capacity of the liquid to be consumed.

(2) Since the entire configuration can be simplified and miniaturized, the portable and storage of the user can be simplified, and the manufacturing cost can be lowered as compared with the electronic water level checking device, thereby increasing the purchasing power.

(3) Since it is possible to prevent the liquid from entering into the body part contained in the container, it is easy to clean after use, and maintenance of the internal and external condition is kept clean, Is obtained.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is an overall configuration diagram showing a water level check apparatus for a visually impaired person according to a first embodiment of the present invention; FIG.
FIG. 2 is an exploded perspective view showing a water level check apparatus for a visually impaired person according to a first embodiment of the present invention.
3 is a cross-sectional perspective view illustrating a water level detection device for a visually impaired person according to a first embodiment of the present invention.
4 is a cross-sectional perspective view showing the use state of the water level detecting apparatus for the visually impaired according to the first embodiment of the present invention.
FIG. 5 is a state diagram showing a state of use of the water level detection device for the visually impaired according to the first embodiment of the present invention.
FIG. 6 is an overall configuration view showing a level indicator for a visually impaired person according to a second embodiment of the present invention.
7 is a cross-sectional perspective view showing a water level check apparatus for a visually impaired person according to a second embodiment of the present invention.
8 is a cross-sectional perspective view showing a state of coupling between an external buoyant body and an inner body in a water level checking apparatus for a visually impaired person according to a second embodiment of the present invention.
9 is a cross-sectional view showing a state of coupling between an external buoyant body and an inner body in a visually impaired water level checking apparatus according to a second embodiment of the present invention.
10 is a cross-sectional perspective view of a visually impaired water level checking apparatus according to a second embodiment of the present invention, including a disk-like internal moving body.
11 is a cross-sectional perspective view showing the use state of the water level checking apparatus for the visually impaired according to the second embodiment of the present invention.
FIG. 12 is a state diagram illustrating a water level check apparatus for a visually impaired person according to a preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may obscure the subject matter of the present invention.

The same reference numerals are used for portions having similar functions and functions throughout the drawings.

In addition, in the entire specification, when a part is referred to as being 'connected' to another part, it may be referred to as 'indirectly connected' not only with 'directly connected' . Also, to include an element does not exclude other elements unless specifically stated otherwise, but may also include other elements.

As shown in FIGS. 1 to 5, the visually impaired water level determining apparatus 100 according to the first embodiment of the present invention is temporarily installed in a container B filled with liquid such as water or beverage, The buoyancy unit 120 and the sensing unit 130 so that the visually impaired person or the low vision person can precisely check the liquid level of the liquid to be filled in the liquid level sensing unit 130,

The main body 110 is a substantially 'C' -shaped structure that is mounted on the upper edge of the container B to be consumed. The main body 110 includes a body B, A body 111 and an external body 112 located outside the container B. [

The inner main body 111 is provided with a guide protrusion 113 in which the buoyant portion 120 is assembled to be movable up and down and the wire rod 125 connecting the buoyant portion 120 and the sensing portion 130 is interfered And a pair of right and left vertical plates arranged at regular intervals and spaced apart to form a space that is free from the above-mentioned problems.

The outer body 112 is formed by recessing an inner surface of the outer body 112 facing the mutually facing guide grooves 114 in which the sensing unit 130 is assembled to be movable up and down, And a pair of right and left vertical plates arranged at regular intervals.

Here, the outer body 112, which is formed of a pair of right and left vertical plates, forms an interval for vertical movement of the sensing unit, interferes with the sensing unit moving up and down, And a pair of upper and lower connection pins 112a.

The buoyant portion 120 and the sensing portion 130 are connected between the inner body 111 and the outer body 112 so that the moving direction of the buoyant portion 120 and the sensing portion 130 are the same. And a direction changing member 140 for changing the traveling direction of the inner and outer main bodies 111 and 125. The connecting main body 115 integrally connects the inner and outer main bodies 111 and 112 to each other.

Although the connection body 115 is shown as a pair of horizontal plate members integrally connecting the upper end of the inner body 111 and the outer body 112, the connection body 115 is not limited thereto, As shown in FIG.

The connection body 115 is composed of a pair of left and right horizontal plate members in the same manner as the inner and outer bodies 111 and 112 formed of a pair of right and left vertical plates facing each other and the wire member 125 is guided and moved between the horizontal plate members It is preferable to provide the spacer 115a to form a space.

At this time, the spacer 115a may be a protrusion formed integrally with the wall surface of the horizontal plate member of the pair of left and right horizontal plate members and contacting the end of the other horizontal plate member.

Accordingly, the inner and outer bodies 111 and 112 and the connecting body 115 are formed of a pair of vertical plate members disposed in the inner and outer portions of the container, and a pair of vertical plate members disposed integrally with each other, And the 'C' -shaped plate may be formed of a right and left assembly structure.

Although the inner body 111 disposed inside the container and the outer body 112 disposed outside the container are shown to have the same length, they are not limited thereto and may have different lengths .

On one side of the inner body 111 facing the inner wall of the container B or on one side of the outer body 112 facing the outer wall of the container, Or a fixing portion 150 elastically contacting the outer wall surface to generate a fixing force of a predetermined size to fix the main body 110 to the position.

The fixing part 150 is formed as a protrusion protruding in an arc shape on one side of the external body facing the wall of the container. However, the fixing part 150 is not limited to this, and one end may be fixed to the main body part 110 And an arc-shaped resilient piece having a fixed end and a free end that elastically contacts the container and generates a clamping force.

Accordingly, when the visually impaired person or the low vision person inserts the container wall between the inner and outer main bodies of the main body 110, So that the body 110 can be firmly fixed to the container without movement.

The buoyant portion 120 is buoyant enough to be partially immersed in the liquid filled in the container and immersed in the liquid or floated on the surface of water to be moved in accordance with a change in the level of the liquid, It is a moving structure.

The buoyant portion 120 includes a buoyant body 121 formed at one side thereof with an assembly groove 122 assembled so as to be vertically movable on the guide jaws 113 formed on the inner body 111 and assembled to make it difficult to be separated from the buoyant portion 120 ).

The buoyant body 121 is made of a foamed material having a specific gravity smaller than that of water so as to sufficiently generate a buoyancy to receive a force from the liquid fluid in the upward direction opposite to the gravity, And a structure having a cavity to be filled.

Accordingly, the buoyant body 121, which is partially immersed and immersed in the liquid filled in the container, is floated on the water surface and generates buoyancy, moves up and down along the guiding jaws of the inner body 110 .

At this time, a gap of a predetermined size is formed between the assembling groove 122 formed in the buoyant body 121 and the guiding jaws 113 formed in the inner body 111, It is possible to minimize the buoyancy of the buoyant portion due to the friction loss.

Here, the buoyant body 121 may have an extension extending in the outward direction so as to increase the contact area with the liquid filled in the container to increase the buoyancy.

The upper and lower ends of the guide jaws 113 interfere with the upper and lower ends of the inner body at the same time as the up and down movement of the buoyant body 121 according to the change in the level of the liquid filled in the container, It is preferable that each of the stoppers 113a is provided with a stopper 113a.

The sensing unit 130 is connected to the buoyancy unit 120 through a wire rod 125 having a predetermined length that is changed by at least one direction switching member 140 provided in the main body 110, And is assembled to the external body 112 so as to be movable up and down.

The sensing unit 130 includes a moving body 131 connected to one end of the wire rod 121 and assembled in the guide groove 114 of the outer body so as to be movable up and down, And a sensing body 133 which is connected to the external body 112 through an intermediary of the sensing body 133 and exposed to the external surface of the external body 112.

The moving body 131 is made of a material capable of minimizing the frictional resistance between the guide grooves 114 formed in the vertical plates facing each other of the outer body 112, It is preferable to have an embossing portion 131a to be brought into contact with it.

It is preferable that the outer surface of the outer body 112 adjacent to the sensing body 133 is provided with a braille display portion 135 so that the change in the height of the sensing body 133 can be recognized by touch. The pointer-like display unit 135 may be integrally formed on the outer surface of the outer body or may be formed of a sticker and attached thereto.

Accordingly, the visually impaired person or the low vision person can see the corresponding position of the sensing unit 133 of the sensing unit, which is raised or lowered together with the buoyant body that is raised or lowered according to the change in the level of the liquid filled in the container, Is recognized as the tactile sensation of the finger, and the liquid capacity to be filled in the container can be accurately checked to control the liquid capacity to be filled in the container.

The sensing unit 130 may be a structure having a relatively greater weight than the buoyant body 121 so that the sensing unit 130 can be lowered and returned when the water level is reduced after the buoyant body 121 moves up.

A direction changing member 140 for guiding the upward and downward movement of the buoyancy portion and the sensing portion in the same direction by switching the direction of the wire member 125 connecting the buoyancy portion 120 and the sensing portion 130 is formed in the inside A first switching member 141 provided at a lower end of the main body 111 and in contact with the wire member 125 and a connection main body 115 connecting between the inner main body 111 and the outer main body 112 And a second switching member 142 in contact with the wire member 125.

The first and second switching members 141 and 142 include a roll 143 formed by recessing a groove 143a on which the wire rod 125 is disposed so as to be in contact with the outer circumferential surface, And shaft members 144 that are respectively assembled to the shaft support grooves 144a.

The roll 143 may be rotatably or integrally formed with the shaft member 144 and the shaft member 144 assembled with the roll 143 may rotate in the shaft support groove 144a Possibly assembled or fixed in position.

6 to 12, the apparatus 100a for visually handicapped persons according to the second embodiment of the present invention includes a main body 110, a buoyancy portion 120, (130), and the same components are denoted by the same reference numerals, and a detailed description thereof will be omitted.

The main body 110 includes an inner body 111 located inside the container B and an outer body 112 located outside the container B as in the first embodiment. The inner body 110 is formed of a vertical hollow body formed through an inner through hole 116 in which an inner moving body 127 to be described later is arranged to be movable up and down. And upper and lower covers 116a and 116b for sealing the lower end.

The upper and lower lids 116a and 116b are fixed to the inner body 110 (see FIG. 1) so as to seal the upper and lower open ends of the inner straight hole 116 via a coupling member such as a bolt or a snap- ), Or may be assembled in an interference fit manner.

The lower cover 116b is sealed with a sealing member 116c to prevent the liquid from being introduced into the lower portion of the container B through the assembly portion with the lower end of the inner body 111 which is immersed in the liquid filled in the container B. To the open lower end of the inner body (111).

The upper surface of the lower cover may have a snap fit to which an end portion is elastically hooked and connected to an assembly groove formed in an inner wall surface of the inner body.

The inner bottom 111 of the inner main body 111 is sealed by the bottom cover 116b to prevent internal inflow of the liquid to be filled into the container, thereby preventing internal contamination by the viscous liquid such as drinking water And it is possible to easily clean the external contamination, so that the external appearance can always be kept clean.

The lower cover 116b is sealed with a sealing member 116c to prevent the liquid from being introduced into the lower portion of the container B through the assembly portion with the lower end of the inner body 111 which is immersed in the liquid filled in the container B. And is coupled to the lower end of the inner body 111.

The outer body 112 includes a guide hole 117 through which the sensing unit 130 is vertically movable and a slit hole 117b formed through the slit hole 117b, And another upper cover 117a that seals the open upper end of the guide hole 117. [

The upper end of the guide hole 117 is closed by the upper lid 117a, and the lower end of the guide hole 117 is opened. However, the upper end of the guide hole 117 is not limited to this, It may be sealed by the bottom cover so that intrusion is difficult.

Here, the slit hole 117b may include a pair of upper and lower connection pins 112a to interfere with the sensing unit 130, which is moved up and down, to limit the movement height.

The upper and lower height restriction of the sensing unit 130 may be formed by a pair of upper and lower protrusions protruding from the vertical guide holes of the inner body and interfering with the inner moving body 127.

A direction switching member (not shown) for switching the traveling direction of the wire member 125 connecting between the buoyancy portion 120 and the sensing portion 130 is provided between the inner body 111 and the outer body 112 as in the first embodiment And a connection body 115 having a connection hole 118 for communicating the internal thread 116 of the internal body 111 and the guide hole 117 of the external body.

The connection body 115 can be sealed by a separate lid member so as to prevent intrusion of foreign matter from the outside.

Accordingly, the inner and outer bodies 111 and 112 and the connecting body 115 have a pair of hollow bodies disposed on the inner and outer sides of the container, and a pair of hollow bodies having a passage through which the wire rod is guided and moved integrally, Shaped " C " -shaped one-piece structure.

The buoyant portion 120 includes an external buoyancy body 126 having a buoyancy such that a part of the body is immersed in or immersed in the liquid filled in the vessel and floated on the water surface and moved in accordance with a change in the level of the liquid, And an inner moving body 127 which is vertically movably assembled to the inner through hole 116 formed in the inner body 111 so as to be vertically moved in the same direction by a magnetic force.

The external buoyant body 126 is provided with a pneumatic body 126a for generating a pulling force to be pulled by a magnetic force of a constant intensity generated between the external buoyant body 126 and the inner moving body 127, Respectively.

Either one of the body 126a and the internal moving body 127 is made of a permanent magnet having a magnetic force of a certain strength and the other is made of another permanent magnet facing another pole with respect to the permanent magnet, .

The permanent magnet may be a coating layer coated on the surface of the external buoyant body 126 or the surface of the inner moving body to a predetermined thickness. It is preferable that the ferromagnetic body is made of a ferromagnetic material which generates a sufficient magnetic force so as to be raised by the magnetic field.

The magnetic force intensity of the permanent magnet provided in the magnetic body 126a or the internal moving body 127 is formed of a ferromagnetic material having a magnetic force relatively higher than a design value predicted in consideration of frictional resistance caused by contact between the members desirable.

 The external buoyant body 126 excluding the adherent body 126a is formed of a foamed material having a specific gravity smaller than that of water so as to sufficiently generate buoyancy that the force is received from the liquid fluid in the upward direction opposite to the gravity Or a structure having a cavity in which a gas such as a certain amount of air is filled in the inner space.

At this time, the external buoyant body 126 is shown in a half-moon shape in order to enlarge an area in contact with the liquid and obtain a high levitation force, but the present invention is not limited thereto and may be provided in various forms.

Accordingly, the external buoyant body 126, which is partially immersed and immersed in the liquid filled in the container or floated on the water surface, generates buoyancy, is moved up and down according to the change of the liquid level, The inner moving body 127 disposed in the inner working hole of the inner body correspondingly moves up and down by the magnetic force generated therebetween.

8 and 9, the outer buoyant body 126 is coupled to the guide groove 111 formed in the outer surface of the inner body to be vertically guided And at least one linear protrusion 111b is formed on the outer surface of the protrusion 126b or the inner surface of the guide groove 111a so as to reduce frictional resistance caused by the contact between them, So as to be parallel to the moving direction of the sieve.

The gap between the outer surface of the protrusion 126b and the guide groove 111a is formed with a gap of a predetermined size to fill the gap between the outer surface of the protrusion 126b and the guide groove 111a, The frictional force can be minimized and the buoyancy of the buoyant portion 120 caused by the friction loss can be prevented from lowering.

The external buoyant body 126 may be sized to cover the entire liquid surface to increase the buoyancy by enlarging the contact area with the liquid filled in the container. And may be connected to the inner or outer body or the connecting body connecting between them through a connecting line of a predetermined length so as to prevent loss.

10, the inner moving body 127 includes a pair of left and right disks 127a and 127a having an outer circumferential surface partially in contact with an inner surface of the inner body, And a connecting shaft 127b connecting the pair of discs, and the disc may be fixedly assembled or rotatably mounted at both ends of the connecting shaft.

Accordingly, the disk of the inner moving body, which is vertically moved together with the vertical movement of the outer floating body according to the change in the level of the liquid filled in the container, is slidably moved in contact with the inner surface of the inner body, It can be.

The sensing unit 130 includes a moving body 131 connected to one end of the wire rod 121 and assembled to the guide hole 117 of the outer body so as to be movable up and down as in the first embodiment, And a sensing member 133 connected to the outer surface of the outer body 112 through a connection rod 132 extending from the outer surface of the outer body 112.

 Here, the moving body 131 is made of a material capable of minimizing the frictional resistance due to the contact with the inner surface of the guide hole 117 of the outer body 112, or may be made of an embossing material having point contact with the outer surface facing the guide hole. It is preferable to include a portion 131a.

The outer surface of the outer body 112 adjacent to the sensing body 133 is also provided with a point-like display portion 135 as in the first embodiment so that the outer surface of the outer surface of the outer body is raised or lowered according to the liquid level change. The position of the sensing unit of the sensing unit, which is raised or lowered together with the internal moving body, is recognized as the tactile display of the fingertip display unit, and the liquid capacity to be filled in the container can be accurately controlled.

The sensing unit 130 may be a structure having a relatively greater weight than the internal moving body 121 so that the sensing unit 130 can be lowered and returned when the water level is lowered after moving up by the external buoyant body 126 and the internal moving body 127 . At this time, the external buoyant body 126 may be separated from the inner body so that the sensing unit may be returned and returned while the magnetic force is released

The direction switching member 140 includes a first switching member 141 provided at a lower end of the inner body 111 and in contact with the wire member 125 as in the first embodiment, And a second switching member 142 provided in the connection body 115 for connecting between the external body 112 and the wire member 125.

The first switching member 141 may be formed of a rib-shaped rib extending downward from the inner surface of the inner body 112 forming the inner through hole, the lower surface of which the wire member 125 contacts, The ribs may be equally applied to the second switching member 142 with different protruding directions.

8, the first switching member 141 may extend from the lower surface of the upper cover covering the opened upper portion of the inner through hole to a portion directly underneath or extend from the inner surface of the inner through hole And the second switching member 142 is provided in a connection body 115 connecting between the inner body 111 and the outer body 112, And another vertical rib 142a extending from the inner surface of the connection hole 118 and contacting the upper end of the wire rod.

Here, the vertical ribs 141a and 142a may be provided with arc-shaped contact plates 141b and 142b, respectively, so as to more reliably perform guiding movement with respect to the wire rod.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. It will be apparent to those of ordinary skill in the art.

110:
111: inner body
112: external body
113: guide chin
114: guide groove
115: connecting body
116: Internal handler
117: Guide ball
118: connecting ball
120: buoyancy part
121: Buoyant body
122: Assembly groove
125: wire rod
126: External buoyancy
127: internal moving body
130:
131: Moving object
132: connecting rod
133:
135:
140:
141: first switching member
142: second switching member

Claims (19)

A main body part having an inner body positioned inside a container filled with liquid and an outer body positioned outside the container, the container body being mounted on an upper edge of the container;
A buoyant portion which is assembled to the inner body so as to be movable up and down so as to be immersed in the liquid to be filled in the container or floated on the surface of the inner body so as to be moved in accordance with a change in the level of the liquid; And
A sensing part connected to the buoyancy part via a wire having a predetermined length and being vertically movable by the at least one direction switching element provided in the body part, And a water level sensor for visually impaired persons. A main body part having an inner body positioned inside a container filled with liquid and an outer body positioned outside the container, the container body being mounted on an upper edge of the container;
An outer buoyant body which is immersed in the liquid filled in the vessel or floated on the water surface and is moved in accordance with a change in the level of the liquid, and an inner buoyant body which is vertically moved in the same direction by the magnetic force with the buoyant outer body, Buoyant parts possibly assembled; And
A sensing unit connected to the internal moving body via a wire having a predetermined length and being vertically movable by the at least one direction changing member provided in the body, And a water level sensor for visually impaired persons. The method according to claim 1,
Wherein the buoyancy portion of the inner body is provided with a guiding jaw assembled so as to be movable up and down, and a pair of right and left straight plates arranged parallel to each other at a predetermined interval so as to form a space in which the buoyancy portion and the sensing buoy- And a water level detector for detecting the level of the visually handicapped person. The method according to claim 1,
The outer body includes a pair of right and left vertical plates disposed in parallel to each other at a predetermined interval so as to form a space in which the wire rod moves without interference, And a water level detector for detecting the level of the visually handicapped person. The method according to claim 1,
And a connection body for connecting the inner and outer bodies with the direction switching member for switching the traveling direction of the wire between the inner body and the outer body. 6. The method of claim 5,
The connection body includes a pair of left and right horizontal plate members integrally connecting the upper end of the inner body and the outer body, and a spacer is provided between the pair of left and right horizontal plate members to form a space through which the wire is guided and moved Wherein the water level detection device is a water level detection device for a visually impaired person. 3. The method of claim 2,
The inner body includes an upper cover and a lower cover which are made of a hollow body having an inner through hole through which the inner moving body is vertically movable and which hermetically open upper and lower ends of the inner through hole, For the visually impaired. 3. The method of claim 2,
Wherein the outer body includes a hollow body through which the sensing unit is guided so as to be movable up and down and a slit hole formed through the outer surface of the outer body so as to communicate therewith. 9. The method of claim 8,
And a connection body having a direction switching member for switching the traveling direction of the wire rod between the inner body and the outer body and having a connection hole communicating an inner vertical hole of the inner body and a guide hole of the outer body. For the visually impaired. The method according to claim 1,
Characterized in that the buoyant portion includes a buoyant body having an assembling groove which is assembled in a guide jaw formed in the inner body so as to be difficult to be detached and which forms a gap between the guide jaws so that liquid in the container is interposed therebetween Water Level Identification Device. 11. The method of claim 10,
Wherein the guide jaw has a stopper which interferes with the buoyant body at the upper and lower ends to restrict the upward and downward movements. 3. The method of claim 2,
Characterized in that the external buoyant body is provided on one side of the body corresponding to the outer surface of the inner body for generating a pulling force to be pulled by a magnetic force of constant intensity generated between the body and the moving body Identification device. 13. The method of claim 12,
Wherein one of the permanent magnet and the moving body is made of a permanent magnet having a magnetic force of a certain strength and the other permanent magnet is made of a metal material or another permanent magnet facing another pole with respect to the permanent magnet Water Level Identification Device. 14. The method according to any one of claims 1 to 13,
Wherein the body portion further comprises a fixing portion for elastically contacting the inner wall surface or the outer wall surface of the container to generate a fixing force for fixing the body portion. 15. The method of claim 14,
The fixing portion may include a protrusion formed on one side of the inner body facing the inner wall of the container or on one side of the outer body facing the outer wall of the container, And a water level sensor for visually impaired persons. 14. The method according to any one of claims 1 to 13,
Wherein the external surface of the external body adjacent to the sensing unit is provided with a pointing type display unit for recognizing the change in height of the sensing unit by touch. 14. The method according to any one of claims 1 to 13,
The direction switching member includes a first switching member provided at a lower end of the inner body and in contact with the wire rod, and a second switching member provided in a connection body connecting between the inner body and the outer body, Wherein the water level detecting device is a water level detecting device for a visually impaired person. 18. The method of claim 17,
The first switching member or the second switching member includes a roll formed by recessing a groove on which the wire rod is disposed so as to be in contact with the outer circumferential surface and a shaft member which is respectively assembled to the shaft main body formed in the inner body and the connecting body. For the visually impaired. 18. The method of claim 17,
Wherein the first switching member or the second switching member includes a rib having a predetermined length extending from the inner body or the connecting body so as to be in contact with the wire rod.

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