KR20130006764U - A stick for the visually impaired - Google Patents

Abstract

The present invention relates to a length-adjustable safety wand for the visually impaired, and more particularly to the handle; A plurality of supports separated by a plurality of stages and configured to be vertically adjustable by a length adjusting mechanism, the plurality of supports being detachably coupled to the handle part; A power supply unit accommodated in the handle part or the support to supply power; A switch operation unit provided at one side of the handle unit to control power supply by a user's operation; A first light emitting means installed at an upper circumferential edge of the support and configured to emit light by receiving power from the power supply by an operation of the switch control unit; A wireless receiver configured to receive power from the power supply unit and the switch control unit, the wireless receiver configured to be able to receive the radio transmitter owned by the user and to respond to a signal transmitted from the wireless transmitter; When a specific frequency signal is received in the wireless receiver, the sound output means is installed on one side of the handle or the support so that the alarm signal or sound of the user can hear; The present invention relates to a safety adjustable cane for the visually impaired.

Description

Adjustable Stick for the Visually Impaired {A stick for the visually impaired}

The present invention relates to a length-adjustable safety wand for the visually impaired, and more particularly, a power supply unit and a light emitting unit, an audio output unit, and a wireless receiver are provided inside the cane body, and a tip provided at the bottom of the main body has a shock or flow rate. It is provided with a light emitting means that is self-illuminating to improve the identification power from others when using the wand relates to a length-adjustable safety wand for the visually impaired.

The cane is one of the walking aids that can be used to help the elderly and the visually handicapped, who are inconvenient in movement, to support their body in a balanced manner, and to check the presence of obstacles in front of them when walking.

Such a cane is usually provided with a handle at an upper end, and has a structure in which a support of a predetermined length is provided at a lower end of the handle.

Also, in recent years, using a cane in the past as a climbing aid for climbing is made of a T-shaped stick to climb the public to carry the stick on the ground while carrying the ordinary people to carry the weight so that climbing is easier It is used a lot to do it.

Meanwhile, the present invention among various uses of the cane relates to a cane for the visually impaired who is difficult to walk due to difficulty in identifying the front due to a visual impairment. Hereinafter, only the cane for the visually impaired among the related arts of the present invention belongs to Let's look at the technology.

Conventional walking sticks designed to be used by the physically handicapped or visually impaired are provided with a power supply means on the handle part and a support unit integrally formed with the handle part at the bottom of the handle part or the handle part, and through the power supply means. A number of technologies have been devised to provide light emitting means (lamps, LEDs, etc.) to emit light with the supplied electricity so that others can perceive movement of the physically disabled or visually impaired.

Korean Utility Model Registration No. 20-311338 (name: cane for the visually impaired) has been conceived as an example of such a prior art.

According to the conventional embodiment described above, as shown in Figure 1, the main configuration of the visually impaired composed of a handle (5), a support (9) connected integrally with the handle (5) to support the ground In the wand, the support 9 is divided into first and second supports 9a and 9b so as to slide on and off, and a plurality of cutouts are formed in the upper fastening portion 8 of the second support 9b. The outer surface forms a spiral and is fastened to the fastener 7 so that the length can be adjusted, and an operation switch part 6 having a plurality of operation buttons 22 connected to a substrate embedded in the handle 5 is formed. And a positioning display unit 4 having a lamp and a speaker connected to the first support 9a so as to emit a beep sound and light by the substrate and the operation button, and the bottom of the second support 9b. Provides a wand for the visually impaired that is configured to fit the buffer (9c) As to enable visually impaired users to pinpoint the course is composed of third party users of the location of the visually impaired or the elderly so that you can use to adjust the length suitable, depending on their physical condition hayeoteotda to allow safe walking.

However, the cane for the visually impaired according to one embodiment of the prior art is configured to be operable with a fastener 7 fastened to a spiral formed on the upper end of the second support, which has a limitation in controlling the length of the support. Positioning display portion 4 consisting of a lamp and a speaker provided in the first support (9a) is configured only in the upper portion to face the front side of the cane so that the third party coming from the side or the rear can accurately recognize the cane user. There was a difficult issue.

In addition, the power supply for lighting and sound generation of the positioning display (4) to be installed on the support should be provided in the handle portion, this power supply is usually using a small battery, its life is short, so frequent replacement In addition, when the battery life is over, the light emitted or the sound of the generated beeps are not output.

In addition, when a user who uses such a cane does not use the cane and finds the cane to use it again, it is difficult for the visually impaired person to find the location of the cane or find it.

(Prior Art Document 1) Korean Utility Model Registration No. 20-403610 (Registration Date: Dec. 06, 2005, Name: Multipurpose Safety Stick) (Prior Art Document 2) Korean Utility Model Registration No. 20-165403 (Registration Date: Oct. 18, 1999, Name: Cane for the Elderly with Personal Protective Function) (Prior art document 3) Korean Utility Model Registration No. 20-252866 (Registration date: October 22, 2001, Name: Walking stick with built-in lighting device)

The present invention was devised to solve the above-mentioned disadvantages of the conventional cane for the visually impaired. The present invention enhances the identification of the cane user to a third party without distinguishing between day and night, and allows the length adjustment according to the user's physical condition. The aim is to provide a length-adjustable safety wand for the visually impaired.

In particular, the present invention has a light emitting means for self-developed by the movement of the cane to emit light at the bottom of the support of the cane, so that the light is always emitted when using the cane regardless of the life of the battery is short life and frequent replacement It is another object of the present invention to provide a length-adjustable safety stick for the visually impaired, which can solve the shortcomings of an indicator light using a battery.

In addition, the present invention provides a visually impaired safety cane for the visually impaired user can easily find and use his wand by using a wireless transceiver even when the wand user does not have a wand at the place where the visually impaired user when using the wand again There is another purpose to provide.

In order to achieve the above object, the length-adjustable safety wand for the visually impaired according to the present invention is composed of a handle and a plurality of stages separated by a length adjusting mechanism, which is configured to adjust the length of the upper and lower sides to the structure detachable from the handle. A plurality of support units coupled to each other, a power supply unit accommodated in the handle unit or the support unit to supply a power ball, and a switch operation unit connected to the power supply unit to be operated by a user provided at one side of the handle unit, and the handle unit A plurality of embedded parts are embedded in the upper outer periphery of the lower support and the first light emitting means to emit light by receiving power from the power supply by the operation of the switch control unit, and the power is supplied from the power supply and the switch control unit, the user A radio transmitter and a receivable channel are configured to respond to signals transmitted from the radio transmitter. And a sound output unit installed at one side of the handle or the support so as to output an alarm signal or sound enough to be heard by the user when a specific frequency signal is received from the wireless receiver and the radio receiver. It is composed.

In addition, the bottom of the support is detachably coupled to the tip of the elastic material in contact with the ground, the tip is made of an elastic material of the transparent or translucent material of the material, the inside of the tip flashing a second battery The light emitting means is provided so that light is emitted from the bottom of the support while the user is using the wand to allow others to easily grasp and recognize the wand user.

In particular, the second light emitting means of the battery-less type includes a housing having a hollow portion formed therein and closed at both sides thereof, a magnet movable along an inner wall of the hollow portion of the housing, and a housing to support the flow of the magnet. On the outer periphery of the housing so as to be flashed by receiving a ball spring is fixed to the inside of the hollow portion, the wire wound around the outer periphery of one side of the housing, the electricity generated by the reciprocating movement of the magnet by the flow of the housing It comprises a plurality of light emitting elements provided.

In addition, a plurality of length adjusting grooves are formed at a predetermined interval on the outer circumference of the lower support, which is capable of adjusting the vertical length of the plurality of supports, and an outer screw fastening portion is formed on the outer circumference of the lower end of the upper support of the plurality of supports. The lower end of the outer screw fastening portion is formed with a protrusion that is protruded into the hollow support by an external pressure and is caught in the length adjusting groove of the lower support inserted into the inner side, and the length adjusting port has an outer screw formed at the lower end of the upper support. An inner screw coupling part detachably coupled to the fastening part is formed at an upper end of the inner circumference, and a lower end of the inner screw coupling part is configured to pressurize or release the protrusion when the inner and outer screw fastening parts are engaged and released. It consists of a characteristic configuration.

According to the present invention having the above-described configuration, the safety wand for the visually impaired person can improve the walking safety of the cane user by easily identifying the cane user regardless of whether the person is visually impaired, day or night.

In addition, the length adjustment safety cane according to the present invention is not only the support is composed of a plurality of stages, but also the upper and lower supports are coupled to each other, a fixed groove is formed at a predetermined interval on the outer periphery of the lower support and the length of the connection portion of each support A sphere is provided to adjust the length of the support freely as necessary to make it more convenient to use.

In addition, a first light emitting means is provided at the top of the cane, and a second light emitting means is provided at the bottom of the support and generates and emits light according to the movement of the cane, thereby reducing the inconvenience of expense and frequent battery replacement. To reduce it.

In addition, if it is difficult to find the location of the cane after use, it is difficult to find the cane, and the receiver equipped with the cane generates a constant beep to operate the transmitter possessed by the user. There is no inconvenience in finding the wand so that it is more convenient to use.

1 is an exploded perspective view of a cane for the visually impaired according to an embodiment of the present invention;
Figure 2 and Figure 3 is a cutaway perspective view and a separate perspective view of the length adjusting device of the first embodiment coupled to the wand for the blind according to the present invention,
Figure 4 is a partially cut longitudinal section of the wand of the present invention,
Figure 5 and Figure 6 is a cross-sectional view of the use state of the length adjuster coupled between the support of a plurality of stages,
7 is an enlarged cross-sectional view of the tip coupled to the bottom of the support,
8 is a use state of the cane according to the present invention,
9 to 13 is a partial excerpt perspective view and an enlarged view and a partial enlarged view of the length of the extract according to the second embodiment of the length adjustment tool applied to the cane according to the present invention, and its main configuration,
14 and 15 is a partial cross-sectional view of the cane according to the third embodiment of the length adjustment tool applied to the cane according to the present invention and the internal configuration cross-sectional view of the length control.

Length adjustable safety wand for the visually impaired according to the present invention is composed of a handle and a support that is detachably coupled to the handle, the support is made of a structure capable of adjusting the length is separated into a plurality of stages, The length adjusting mechanism is coupled between the supports of the pressurizing and releasing the lower support that is introduced into the inner side of the upper support is made of a structure capable of adjusting the length of the cane according to the user's physical condition.

In addition, the handle portion or the upper end of the support is provided with a replaceable battery is supplied with a power supply capable of supplying power, and the first light emitting means for emitting light from the power supplied from the power supply, the outside or one side of the power supply A switch control unit is provided to control the power supplied from the power supply unit to the first light emitting means and other devices.

And, the bottom of the support is provided with a tip (tip) that makes a clear and clear sound when in contact with the ground, the tip is a battery-less light emitting device that flows upon the flow of the cane and contact with the ground to generate and generate self The included second light emitting means is provided regardless of the first light emitting means provided on the handle portion or the upper end of the support is configured to increase safety of the walking stick user to enable safe walking.

In addition, the upper end of the handle portion or the support is provided with a wireless receiver that is electrically connected to the power supply unit for receiving a frequency signal of a specific channel, the sound output to output a constant beep when a specific signal is received in the wireless receiver Means are additionally provided.

In particular, the first embodiment of the length adjusting mechanism to enable the vertical length adjustment of the support consisting of a plurality of stages in the above-described length adjustment safety wand of the present invention, the operation method is made of a rotary type upper ( Outer) The lower (inner) support coupled to the support is made of a structure that is released or tightened, the length adjusting device of the second embodiment consists of a push and pull structure, according to the push and pull the upper (outer) support and the lower (inner) ) The fastening or tightening between the support is made of a structure, the length adjusting device according to the third embodiment is made of a button method is released from the restraint between the support connected when the push of the push button and the support is connected when the push of the push button The restraint force is generated in the liver and is made of a structure capable of adjusting the length of the support.

Hereinafter, with reference to the accompanying drawings in the specification, it will be described in more detail with respect to preferred embodiments of the present invention.

2 and 3 show a combined perspective view and a separate perspective view according to a preferred embodiment of the length-adjustable safety wand for the blind according to the present invention, respectively.

As shown in the figure, the length adjustable safety cane 100 according to the present invention is provided on the top end of the handle portion 10 and made of a constant size and shape so that the user can grip, the bottom of the handle portion 10 Hollow support 20 made of a structure capable of adjusting the length is composed of a plurality of stages, and fixed to one side of the handle portion 10, the strip 12 consisting of a constant length to hang on the user's wrist, and The bottom of the support 20 is composed of a tip (70, 70) that is coupled to the replaceable structure is provided.

The support 20 is fitted to the first support 21 and the lower end of the first support 21 provided with a connecting portion 25 in the upper end so as to be located at the top and detachable from the handle 10 The diameter is slightly smaller than the first support 21 so that the first support 21 can be inserted into the inner side of the first support 21 so that the length can be adjusted by the length adjusting device 30 coupled to the lower end of the first support 21. The second support 22 is made of, and the length adjuster 30 is fitted into the second support 22 in the lower end of the second support 22, the fastening portion 30 is fastened to the lower end of the second support 22 It is made of a structure capable of adjusting the length and consists of a third support 23 provided with the tip 70 at the lower end.

Although the configuration of the support 20 shown in the drawing consists of three stages, it may be configured in four or more stages or less depending on the intended use or the user's physical condition.

And, the light emitting means 60 is embedded in the outer periphery of the upper end of the first support 21, the light emitting means 60 is preferably composed of a plurality of LEDs with low power consumption and excellent durability, but other types Lighting device can be adopted.

In addition, the inside of one side of the handle portion 10 or the upper end of the support 20, the power supply means 40 is provided with a control circuit unit for supplying and controlling the power to the light emitting means 60 therein do.

In a preferred embodiment of the present invention shown in the figure is the power supply means 40 is installed inside the lower end of the handle portion 10 is configured to maintain the electrical connection with the light emitting means 60.

And, one side of the handle portion 10 is provided with a switch control unit 50 for controlling the power supply means 40 installed inside the handle portion 10, the switch control unit 50 is user-friendly It can be configured by adopting a switch structure of various forms for, but in the embodiment shown in the figure is configured as a push button type, once the power is supplied to the light emitting means from the power supply means 40, press the power once again It is composed of push on / off type which cuts off the supply.

In addition, the lower end of the handle 10 having the power supply means 40 or the light emitting means 60 or the upper end of the support 20 is electrically connected to the power supply means 40 and transmitted from the outside. A wireless receiver for receiving a specific frequency signal and a sound output means 65 for outputting a specific alarm signal or a warning sound when the signal is received by the wireless receiver is further included.

The support 20 is composed of a plurality of hollow as described above the lower support (22, 23) is configured to be allowed to enter the upper support (21, 22) inside the upper and lower length can be adjusted, the upper The outer periphery of the lower side supports (22, 23) to be fitted into the side supports (21, 22) is formed with a concave length adjustment groove 24 of a predetermined depth at regular intervals.

And, the length adjusting device 30 according to the first embodiment coupled to the connecting portion between the upper support (21, 22) and the lower support (22, 23) of the plurality of supports in a cylindrical type according to the shape of the support It is tightened according to the left and right rotation or the tightening is released to enable the length adjustment between the upper and lower supports.

Therefore, the inner screw fastening portion 32 is formed on the inner peripheral upper end of the length adjusting device 30, and the lower end of the inner screw fastening portion 32 is inclined slightly inward in the direction of the inner central axis than the upper end ( 34) is formed.

On the outer circumferential edge of the lower end of the upper support (21, 22) to which the length adjusting device 30 is coupled is formed an outer screw fastening part (26) which is combined with the inner screw fastening part (32) of the length adjusting device (30). In addition, the lower end of the outer screw fastening portion 26 is formed integrally with the upper support (21, 22), it is provided with a pressing piece (27) which is cut at regular intervals and formed with a predetermined protrusion on the inner surface It is.

On the other hand, Figure 4 is a vertical cutting state is shown to make it easier to see the internal configuration of the above-mentioned adjustable length safety wand 100.

As shown in FIG. 4, a power supply means 40 is provided inside the handle part 10, and the power supply means 40 includes a battery accommodating part in which a battery 42 for power supply is accommodated. 41 is provided in a predetermined size, and the control circuit unit 43 including a circuit board is located on one side of the battery accommodating unit 41, and the control circuit unit 43 is provided outside the handle unit 10. It is electrically connected to the switch control unit 50.

In addition, the upper end of the support 20, that is, the inner side of the upper end of the first support 21 is electrically connected to the power supply means 40, the user is supplied with power according to the operation of the switch control unit 50 to emit light The first light emitting means 60 is inserted.

The first light emitting means 60 is embedded in the support 20 is composed of a plurality of LEDs (61, 62, 63, 64) for emitting light to the outside, the power is installed on one side of the plurality of LEDs The power is supplied from the supply means 40 and a wireless receiver 65 for receiving a signal through an external wireless transmitter and a specific frequency channel, and when a signal is received from the wireless receiver 65, a constant alarm signal to the outside. Or sound output means 66 for outputting sound is provided.

On the other hand, Figure 5 and Figure 6 is shown in cross-sectional view of the state when the binding and release of the length adjusting device 30 according to the first embodiment is coupled between the upper and lower supports and coupled between the upper and lower support. .

The length adjusting device 30 is a length adjusting device when the inner screw fastening portion 32 is coupled to the outer screw fastening portion 26 provided at the lower ends of the upper supporters 21 and 22 to maintain a fully fastened state. The pressing piece 34 formed inwardly in the direction of the support center axis on the lower end side of the inner circumference of the 30 presses the outer surface of the divided piece 27 having protrusions provided at the lower end of the outer screw fastening portion 26. The projections 28 of the piece 27 are moved in the direction of the central axis of the supports 21 and 22 to be caught by the length adjusting grooves 24 formed on the outer periphery of the lower supports 22 and 23, so that the upper and lower supports The side supports are fixed to each other (see Figure 5).

In addition, when the length adjusting device 30 is released from the outer screw fastening portion 26, the length adjusting device 30 is moved to the lower end of the supports 21 and 22 by the pitch moving distance of the loosened thread. The projections of the divided pieces 27 inclined in the direction of the center axis of the support while the pressing piece 34 of the 30 is also moved downward to release the pressing force of the divided pieces 27 provided at the lower ends of the supports 21 and 22. 28) is retracted from the length adjustment groove 24 of the lower side support while returning to the original position so that the lower support can be withdrawn from the upper support (see FIG. 6).

As such, the divided pieces 27 provided on the lower ends of the supports 21 and 22 are inclined inwardly in the direction of the central axis of the supports 21 and 22 as the length adjusting device 30 is tightened and released. The projection 28 is caught in the length adjusting groove 24 formed at the outer circumference of the lower supports 22 and 23 inserted into the supports 21 and 22 and the release thereof is released to release the support 20. It is made of adjustable structure.

On the other hand, Figure 7 is an enlarged cross-sectional view is easy to see the internal configuration of the tip 70 coupled to the support 23 at the bottom.

That is, the tip 70 coupled to the bottom support 23 is made in direct contact with the ground or the floor, it is preferably made of a durable material resistant to impact, in particular delivered from the floor every time the straw stick More preferably, it is made of an elastic material to absorb the impact.

In particular, the tip 70 is made of a transparent or translucent material, the screw fastening portion 72 is provided at the upper end to be replaceable to the lower end of the support 23, the bottom of the support 23 is the tip 70 The fastening groove 29 is coupled to the screw fastening portion 72 is formed.

In addition, the inside of the tip 70 is provided with a second light emitting means 80 that is flashing with no battery. The second light emitting means 80 has a hollow portion formed therein, the housing 81 of which both sides are closed, and a magnet 82 movable inside the hollow portion of the housing 81 according to the movement of the wand, and the magnet ( A ball spring 83 fixed to the inner end of the hollow part of the housing 81 to support the flow of the ball 82; a coil 84 wound around the outer periphery of one side of the housing 81; It consists of a configuration including a plurality of light emitting elements 85 provided on the outer periphery of the housing 81 so as to receive the electricity generated by the reciprocating movement of the magnet 82 by the flow of (81).

The tip 70 provided with the second light emitting means 80 configured as described above has a magnet 82 inside the housing 81 due to a shock generated when the user uses the wand or when the wand is placed on the ground. Electromagnetic is generated on the side of the coil 84 wound around the outer circumference of the housing 81 by the flow of the magnet 82, so that a current flows in the light emitting element 85 connected to the coil 84, so that even a minute current The light emitting element 85 is to emit light.

Therefore, the light emitting device 85 always emits light every time the wand is moved so that the third person can identify the visually impaired in a state where it is difficult for the visually impaired to identify the front object, thereby preventing the gait of the visually impaired from walking. Do not.

On the other hand, the use state of the adjustable length safety wand 100 according to the present invention made of the above-described configuration and structure is briefly shown in FIG.

That is, when the user walks while holding the cane of the present invention in his hand, he presses the switch operation part 5 provided on one side of the handle part 10, and a power source installed inside the handle part 10. The supply means 40 supplies power to the first light emitting means 60 provided at the upper end of the support 20, the light emitting means 60 consisting of a plurality of LEDs to emit light, constant light in all directions from the upper end of the support As the light is emitted, drivers of vehicles traveling on the other side of the road can identify the cane used by the visually impaired, so that the driver can be cautious with the awareness of the pedestrian with the cane. .

The flashing or lighting of the first light emitting means 60 is performed according to the memory set in the control circuit part of the power supply means 40, or is constantly turned on.

In addition, if the length of the cane that the user intends to use does not fit the user's physical condition, the user finds the connection of the support and releases the length adjuster 30 coupled to the connection to the lower support fixed to the upper side support After releasing the, lower the lower support into the upper support to reduce the length, or draw the lower support from the upper support to adjust the length of the support to the required length, and then adjust the length again. By screwing the adjuster to the support, the length-adjusted lower support is fixed integrally with the upper support.

The cane of the present invention is provided with a length adjusting groove at regular intervals throughout the outer circumference of the lower side support so that the user can easily adjust the length of the support according to his physical condition.

In addition, when using the cane, when the user presses the switch control unit provided on one side of the handle, the wireless receiver and the sound output means provided inside the upper end of the support is also supplied with power to maintain a standby state for operation.

Therefore, when the user enters the room and puts the cane on one side, and wants to find the cane to go out again, the user can swing his or her hands and not find the cane, but operate the wireless transmitter that he holds. In the wireless receiver provided in the constant signal sound is output through the sound output means, the user can listen to the sound signal output from the cane to easily find the location of the cane so that the use of the cane more convenient.

The radio transmitter and the radio receiver receive a specific frequency transmitted from the radio transmitter side using the RF communication in which the unidirectional communication channel is established in the radio receiver installed in the can and output a constant signal through the sound output means through the control circuit unit. Since the technology of the RF type wireless transmitter and receiver applied to the present invention is a publicly known technology widely used in other technical fields, those skilled in the art will be able to implement the known public technology without difficulty. Detailed description thereof will be omitted in the invention.

In addition, Figures 9 to 13 shows the configuration and the installation state of the length adjusting device (30a) according to the second embodiment applied to the stick of the preferred embodiment of the present invention described above.

That is, Figure 9 shows a state in which the length adjuster 30a according to the second embodiment is coupled to the connecting portion of the upper and lower supports, the length adjuster 30a according to the present embodiment is the length adjuster by the user It is composed of a structure in which the clamping or tightening is released between the upper and lower (or the inner and outer side) support members by pushing and pulling the 30a.

As shown in Figure 10 and 11, the length adjusting device (30a) is formed in a cylindrical shape, the pressing piece 31a is formed on one side of the inner circumference, the opposite inner circumference formed with the pressing piece (31a) is a constant length The control knob 31 is formed with a locking projection (31b) of the control knob 31 is inserted and coupled to the inside of the control knob 31, one end is coupled to the front end of the upper (or outer) support 21, the control knob 31 The stopper 33a which is lifted and operated by the pressing piece 31a of the stopper 33a which is released from the length adjusting groove 24 formed on the outer circumference of the lower (or inner) support 22 is elastically operated to stop the stopper 33a. It is composed of a cylindrical guide tube 33 having a spring clamp 35 is inserted into the engaging groove (33b) formed on the opposite side of the) and elastically operated according to the operation of the adjustment knob (31).

The stopper 33a formed on the guide tube 33 is integrally formed on one side of the guide tube and configured to be elastically operated according to the pressing operation of the pressing piece 31a of the adjusting beam.

12 illustrates the shape and structure of the spring clamp 35 which is fitted between the outer circumference of the guide tube 33 and the inner side of the adjustment knob 31.

The spring clamp 35 has springs 35a and 35b coupled to both sides thereof, and locking levers 36 to which the locking protrusions 31b of the adjustment knob 31 are coupled are formed on both sides thereof, and the locking levers 36 ) Is the outer side of the arc-shaped (36), 36b, 36b is formed is inserted into the control knob 31 is easy to enter when combined with the engaging projection (31b), once the engagement is not separated. It is configured not to.

On the other hand, the guide pipe 33 to which the spring clamp 35 is coupled is formed with a coupling groove 33b to which the spring clamp 35 and the springs 35a and 35b are coupled to the opposite side of the stopper 33a. A guide (not shown) for guiding the locking lever 36 of the spring clamp 35 is formed outside the coupling groove 33b of the guide tube 33.

FIG. 13 is a simplified cross-sectional view of an operating state after the assembled state of the length adjusting device 30a of the second embodiment described above.

One end of the upper (or outer) support 21 is fixedly coupled to one side of the guide tube 33, and the lower (or inner) support (inward) of the guide tube 33 of the upper (or outer) support 21 is fixed. 22 is inserted and coupled to the slide movement, the stopper (33a) of the guide tube 33 in the length adjusting groove 24 of the lower (or inner) support 22 is locked, the length of the support can be adjusted It is configured to.

When the control knob 30a according to the second embodiment of the present invention is held by a hand and pulled or pushed in one direction, the pressing piece 31a of the control knob 31 holding the stopper 33a moves the stopper 33a. The stopper 33a is released from the length adjusting groove 24 of the lower (or inner) support 22 while the upper (or outer) support 21 is moved by the operation of the adjusting knob 31 while moving out of the pressed position. The desired path for the support according to the direction of movement of the adjusting knob 30a

This makes it possible to adjust the stretch, and when the adjusting knob 30a is released, the pressing piece 31a is positioned at the length adjusting groove 24 of the lower (or inner) support 22 of the stopper 33a, and thus the required length. Adjust it.

In addition, Figure 14 and Figure 15 shows the structure and configuration of the length adjusting device 30b according to the third embodiment of the present invention briefly.

As shown in the figure, the length adjusting tool 30b according to the second embodiment is a fixing piece 36 fixed to the outer peripheral end of the upper (or outer) support 21 and the fixing piece 36 One end is pinned from the inside of the through-hole 37d formed in the upper (or outer) support 21 is provided with a fixing projection (37a) provided on the other side when the push button (36a) coupled to protrude from the one side to the outside Rotating piece 37 is configured to enable the length adjustment of the lower (or inner) support 22 by the locking or locking is released to the length adjusting groove 24 of the lower (or inner) support 22 through the above, It is composed of a configuration including a compression spring (37c) is coupled to the lower side of one side of the rotating piece 37 provided with a push button (36a) and the elastic spring of the push button (36a) and the rotating piece (37).

The rotating piece 37 which is rotatably installed inside the fixing piece 36 has a pin fixed to one end thereof by a fixing pin 37b, and the other side on which the fixing protrusion 37a is formed on the principle of a lever is formed on one side of the rotating piece 37. (36a) It is made of a structure that can be operated up and down during pressing.

The length adjusting tool 30b according to the third embodiment of the above-described configuration and structure, when the user presses one side pushbutton of the fixed piece fixedly installed on one side support, the other side of the rotating piece pressurized by one side by the pushbutton is raised. After the fixing protrusion 37a inserted into the length adjusting groove 24 of the support comes out, and the fixing protrusion 37a is pulled out, the outer or inner support is pushed to one side or pulled to adjust the length as necessary. When the push button is released, the fixing protrusion 37a of the pivoting piece is inserted into the length adjusting groove formed on the outer circumference of the inner support, and the length of the inner support is fixed.

The handle and the support, which constitute the main configuration of the safety wand for the visually impaired according to the present invention described above, are made of a material that is light in weight and strong in durability and corrosion resistance, and the length adjusting mechanism is easily damaged even by external impact or excessive manipulation. It is preferably composed of a material that is not.

10: handle 12: strip
20: support 21: first support
22: second support 23: third support
24: length adjusting groove 25, 26: screw connection
27: divided piece 28: protrusion
29: fastening groove 30, 30a, 30b: length adjustment
31: Adjustment knob 31a: Pressing piece
31b: engaging projection 32: inner screw fastening portion
33: guide tube 33a: stopper
33b: locking groove 34: pressure piece
35: spring clamp 35a, 35b: spring
36: fixed piece 37: rotating piece
37a: fixing protrusion 37b: fixing pin
37c: Compression Spring 37d: Through Hole: Length Adjuster
32: internal threaded portion 34: pressure piece
40: power supply means 41: receiving portion
42: battery 43: control circuit
50: switch operation unit 60: the first light emitting means
61,62,63,64: LED 65: Wireless Receiver
66: sound output means 70: tip (TIP)
72: screw fastening portion 80: the second light emitting means
81: housing 82: magnet
83: bullet spring 84: coil
85: light emitting device 100: safety wand

Claims (6)

A handle part which the user can grip by hand;
A plurality of supports separated by a plurality of stages and configured to be vertically adjustable by a length adjusting mechanism, the plurality of supports being detachably coupled to the handle part;
A power supply unit accommodated in the handle part or the support to supply power;
A switch manipulation unit provided at one side of the handle unit to control power of the power supply unit by a user's manipulation;
A first light emitting means installed at an upper circumferential edge of the support and configured to emit light by receiving power from the power supply by an operation of the switch control unit;
A wireless receiver configured to receive power from the power supply unit according to an operation of the switch control unit, and to be configured to be received by a wireless transmitter carried by a user, and installed at one side of an upper end of the support to react according to a signal transmitted from a wireless transmitter;
When a specific frequency signal is received in the wireless receiver, the sound output means is installed on one side of the upper end of the handle or the support so that the alarm signal or sound of the user can hear; Adjustable safety stick for the blind. The method of claim 1,
The bottom of the support is detachably coupled to the tip that makes a clear sound when in contact with the ground, the tip of the inside of the tip is provided with a second light emitting means that flashes itself without a battery when the flow of the support and the impact of the tip Safety stick for the visually impaired, characterized in that it is configured to emit a constant light to the outside. 3. The method of claim 2,
The second light emitting means has a hollow formed therein and the housing is closed on both sides;
A magnet movable along an inner wall of the hollow part of the housing;
A bullet spring fixedly installed inside the hollow of the housing to support the flow of the magnet in a shot;
A coil wound around the outer circumference of the housing a plurality of times,
Length-adjustable safety wand for visually impaired, comprising a plurality of light-emitting elements connected to the coil and provided on the outer periphery of the housing so as to receive electricity generated by the reciprocating movement of the magnet by the flow of the housing and blink. . The method of claim 3,
The support of the plurality of stages is composed of three to four supports made of a structure that is adjustable in length by fitting the lower side support to the upper side support,
The length adjusting mechanism provided between the upper and lower supports is made of a rotary length adjusting method, the outer peripheral edge of the lower support is formed a plurality of length adjusting grooves are maintained at regular intervals up and down,
The outer screw fastening portion is formed on the outer periphery of the lower end of the upper support, and the lower end of the lower support is inserted into the upper support at the lower end of the outer screw fastening portion inclined inward by an external pressure in the direction of the center axis of the support. Is provided with a divided piece formed on the inner surface of the projections,
The length adjusting mechanism includes an inner screw coupling part detachably coupled to an outer screw coupling part formed at a lower end of the upper side support, and formed at an upper end of an inner circumference, and a lower screw coupling part and a screw coupling part are formed at the lower end of the inner screw coupling part. And a pressing piece which is inclined inward in the direction of the center axis of the support to press or release the divided pieces when released. The method of claim 3,
The support of the plurality of stages is composed of three to four supports made of a structure that can be adjusted in length by the length adjusting device to push and pull, the length adjusting device is
A control knob formed in a cylindrical shape and having a pressing piece formed at one side of the outer circumference, and having an engaging protrusion of a predetermined length formed at the opposite inner circumferential edge formed with the pressing piece;
The stopper is inserted into the inside of the adjustment knob and one end is coupled to the front end of the outer support, the stopper is lifted by the pressing piece of the control knob to release the stopper is released in the length adjustment groove formed on the outer periphery of the inner support elastically Length-adjustable safety stick for the visually impaired, comprising a cylindrical guide tube having a spring clamp which is formed to be inserted into a locking groove formed on the opposite side of the stopper and is elastically operated according to the operation of the adjusting knob. . The method of claim 3,
The support of the plurality of stages is composed of three to four supports made of a structure that can be adjusted in length by a button-type length adjustment, the length adjustment is
A fixing piece fixedly installed on an outer circumferential tip of the outer support;
One end of the fixing piece is fixed to the inside of the fixing piece in the operation of the push button coupled to protrude from one side to the outside of the fixing projection provided on the other side through the through hole of the outer support is caught or caught in the length adjusting groove of the inner support Rotating piece configured to be adjustable in the length of the inner support;
The push button is coupled to the lower portion of the rotating piece provided with a compression spring installed to enable the elastic operation of the push button and the rotating piece; Length-adjustable safety stick for the visually impaired.

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