KR20190078966A - Motion Sensor And Electric Mat Automatically On/Off Device Using This - Google Patents

Abstract

The present invention relates to a motion sensor and an automatic power shut off device of an electric mat using the same. The motion sensor (1) comprises: a case (3) which constitutes an outer body of the sensor and forms a flow space (S) therein; a pair of +/- terminals (5, 6) which has a guide rail (11) in the flow space (S); and an energizing ball (7) which is movable on the guide rail (11) when an impact is applied from the outside. While moving on the guide rail (11), the energizing ball (7) connects a current when in contact with the +/- terminals (5, 6) at the same time and shuts off the current when separated from either or both of the +/- terminals (5, 6). Therefore, since the structure of the +/- terminal constituting the rail which contacts to or separates from the energizing ball can be simplified, the production efficiency and quality of the motion sensor and the automatic power shut off device using the same can be improved, and the production cost thereof can be reduced.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a motion sensor,

The present invention relates to an operation sensor and an automatic power cutoff device for an electric mat using the same. More particularly, the present invention relates to an operation sensor that cuts off power supply during connection due to external impact, The present invention relates to an automatic power cut-off device for an electric mat which cuts off or connects a current supplied to an electric mat according to a movement of a mat user.

Generally, when an electric wire is embedded in a mat having a predetermined size in accordance with the purpose of use and the electric wire is embedded in the mat at a predetermined interval to supply heat through the power supply unit, The heating wire embedded in the mat by the supplied power source is heated to warm the mat so that the user can take a rest or sleep at an appropriate high temperature.

As an example of such a conventional electric mat, the automatic power cut-off device of the electric mat disclosed in the registration number 10-1492374 of the present applicant includes a mattress 220 and a mattress (not shown) And a sensing member 250 for sensing movement of the mattress 220. The sensing unit 250 senses the movement of the mattress 220. The sensing unit 250 senses the movement of the mattress 220. The sensing unit 250 senses the movement of the mattress 220, When the switch (241) of the power regulator is turned on, the power is applied to heat the heating wire so that the surface of the mat is set at a predetermined temperature, so that the person sitting on the mat or the person lying down can feel warm, Let's do it. When the use is completed, the power is turned off by operating the switch 241 of the power regulator.

In this way, when the electric mat 201 is used, the user can set the operation time of the electric mat 201 through the timer 243 built in the power adjuster 240, Thereby preventing waste of power, preventing a fire due to overheating, and maintaining a comfortable operating temperature.

The conventional automatic power cutoff device 201 includes a sensing member 250 for sensing the movement of the mattress 220 and a plurality of socket terminals 253 and 254 disposed at the center of the recessed groove 252 of the receiving portion 251, The electrifying ball 255 moves along the recessed groove 252 when the sensing member 250 is moved by an external force applied to the mattress 220. The electrifying ball 255 moves along the curved surface of the groove 252, The power passing through the sensing member 250 is repeatedly cut off or connected in the process of repeating the contact / separation with the terminals 253 and 254. That is, the heating wire 230 is energized when the energizing ball 255 is in contact with the flat terminals 253 and 254 at the same time, and is disconnected when it is apart from the at least one flat terminal 253 and 254.

2 and 3, due to the recessed top surface shape of the recessed recessed portion 252 recessed in a curved shape, the upper cutout of the recessed recessed portion 252 is formed along the upper surface of the recessed recessed portion 252 In order to connect the plug terminals 253 and 254 and the power regulator 240 by separate embedding lines, the embedding lines connected to the ends of the plug terminals 253 and 254 The manufacturing process is likewise very complicated, so that the production efficiency is lowered, the unit price is increased, and the possibility of quality deterioration is increased.

KR 10-1492374

The present invention has been proposed in order to solve the problems of the conventional automatic power cutoff device as described above, and it has been proposed that the shape and assembly of the +/- terminals bringing the power off or connection of the motion sensor upon contact or separation with the energized ball It is an object of the present invention to improve the production efficiency and quality of the motion sensor and the automatic power cutoff device using the motion sensor and to reduce the unit cost by simplifying the structure as much as possible.

In order to accomplish the above object, the present invention provides a vacuum cleaner comprising: a casing forming an outer body and forming a flow space therein; A pair of +/- terminals which are coupled in parallel in the case so as to be exposed on the inner circumferential surface of the flow space and form a guide rail in the flow space; And an energizing ball which is mounted in the flow space to be placed on the guide rail and is movable on the guide rail when an impact is externally applied to the energizing ball, And when the terminal is in contact with the +/- terminal at the same time, the current is passed, and when the terminal is disconnected from either the terminal or both terminals, the current sensor is disconnected.

In addition, the case includes a pair of mounting grooves (39, 40) inserted into and aligned with the flowing space so as to sandwich the +/- terminals, and the +/- terminals are respectively inserted into the mounting grooves And extend in the longitudinal direction of the case so as to form the guide rail at the bottom of the flow space.

The +/- terminal is curved so that the rail surface constituting the guide rail has a U-shaped groove, and the case is set such that the height of the flow space allows the movement of the energizing ball along the guide rail desirable.

Further, in the case, when the energizing ball is placed on the guide rail, the distance between the long side side inner circumferential surface of the case and the corresponding inner circumferential surface of the case constituting the flow space is defined as a rail clearance, The clearance is preferably set such that the sum of the rail clearance and the thickness of each of the flat terminals is smaller than the radius of the current-carrying ball.

The present invention also relates to a heating wire embedded in a mattress; A power supply connected to the heating wire to turn on and off the power supplied to the heating wire and to adjust the temperature of the heating wire; A timer coupled to the power supply to determine an operating time of the power supply; And a motion sensor mounted on the mattress to be connected to the timer, the motion sensor sensing movement of the mattress and energizing or breaking a current supplied from the power supply to the heating wire; And an automatic power cut-off device for the electric mat.

According to the operation sensor and the automatic power cutoff device of the present invention, the electric current supplied to the heating wire is energized or discharged in accordance with the contact or separation between the rails constituted by the +/- terminals and the energizing balls moving in the longitudinal direction or the width direction along the rails. The operation of the heating wire can be timely stopped by sensing the movement of the matte user.

In addition, since the structure of the +/- terminals constituting the rail can be simplified in supplying or cutting off the electric power to / from the heating wire in accordance with the contact or separation of the energizing ball and the rail, the operation sensor and the automatic power cut- Thereby improving the production efficiency and quality and reducing the production cost.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a conventional automatic power cut-off device of a conventional electric mat. FIG.
2 is an enlarged cross-sectional view of the sensing member of Fig. 1;
3 is an enlarged view of a portion A in Fig.
4 is a partially assembled perspective view of a motion sensor according to an embodiment of the present invention;
Fig. 5 is a plan view of Fig. 4; Fig.
FIG. 6 is an exploded perspective view of FIG. 4;
FIG. 7 is a front sectional view of FIG. 4; FIG.
Figure 8 is a side cross-sectional view of Figure 4 according to another embodiment of the present invention;
9 is a schematic view showing an automatic power cut-off device of the electric mat of the present invention.

Hereinafter, a motion sensor according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The operation sensor of the present invention comprises a case 3, +/- terminals 5 and 6, and a current-carrying ball 7 as shown in FIG. 4 and FIG.

First, the case 3 constitutes the outer body of the motion sensor 1. The case 3 includes a flow space S for accommodating the upper +/- terminals 5, 6 and the energetic ball 7 therein. . At this time, the case 3 may be manufactured so as to completely enclose the flow space S with one body so that the internal +/- terminals 5, 6 and the energizing ball 7 can not be taken out after the product is manufactured And preferably has a structure that is separated into a body 31 and a lid 33 as shown in Figs. 5, the protrusion 35 protrudes from the bottom surface of the cover 33 and the protrusion 35 is formed in the cover 31 so as to correspond to the protrusion 35 on the upper surface of the protrusion 35, And the hole 37 in a snap-fit manner.

5 and 6, the case 3 is configured such that the energizing ball 7 is lifted up from the guide rail 11 formed by the +/- terminals 5 and 6, or the guide rails 11 The distance from the guide rail 11 or the +/- terminals 5 and 6 to the lid 33 is set to be sufficiently larger than the diameter of the energizing ball 7 so as to be able to move along the length of the case 3 For this purpose, the flow space S is formed to have a sufficient depth.

The case 3 is provided with the +/- terminals 5 and 6 in the flow space S as described above and therefore the +/- terminals 5 and 6 are provided for movably mounting the energetic ball 7. [ The structure of the flow space S must be variously modified according to the shape of the +/- terminals 5 and 6 so as to insert the flow space S. In this embodiment, as shown in FIGS. 5 and 6, And a pair of mounting grooves 39 and 40 extending in the left and right directions of the flow space S in the drawing. At this time, the mounting grooves 39 and 40 are formed in the longitudinal direction so as to be able to insert the +/- terminals 5 and 6 side by side. As a result, the +/- terminals 5, 6).

4 and 5, in the case 3, when the long side side inner peripheral surface 43 of the case 3 forming the flow space S and the assembly grooves 39 and 40 are adjacent to each other without a gap The distance d between the outer side 41 of the mounting groove 39 and the outer side 42 of the mounting groove 40, that is, the outer side of the + terminal 5 and the outer side of the terminal 6, The energizing ball 7 can flow in the width direction of the case 3, that is, in the forward and backward directions while being placed on the rail 11 during use, as shown in Fig. 8, for example, In other words, can be instantaneously dropped with either one of the terminals 5, 6 during use. In this case, as shown in Fig. 8, the energizing ball 7 spaced apart from the one terminal 6 must be immediately restored to the original position, and each of the assembling grooves 42, 43 corresponding to the long side side inner peripheral surface 43 and the inner peripheral surface 43, The sum of the rail clearance m and the thickness t of each of the +/- terminals 5 and 6 is set to be smaller than the sum of the rail clearance m and the thickness t of each of the +/- terminals 5 and 6, The energizing ball 7 climbing over one of the +/- terminals 5 and 6 does not maintain contact with the long side side inner peripheral surface 43 and immediately returns to the original position .

The +/- terminals 5 and 6 are switching terminals for turning on and off the power supplied to the electric mat heating wire 110 shown in Fig. 9 together with the energizing ball 7 as shown in Figs. 4 to 8 As shown in FIG. 1, the electrifying ball 7 is moved in the longitudinal direction as mentioned above, as shown in FIG. 1, and is arranged in the case 3 so as to be exposed on the bottom surface of the flow space S of the case 3 during assembly, The guide rails 11 are formed. To this end, each of the +/- terminals 5, 6 is fitted in the mounting groove 39, 40 formed so as to correspond to the bottom of the flow space S, and thus extends in the longitudinal direction of the case 3.

In particular, each of the +/- terminals 5 and 6 may be formed in any shape as long as it can move the electrifying ball 7 in the longitudinal direction, and may be formed to have a straight rail surface . However, in this case, even if the energized ball is shifted to the rear end of the rail at the moment when the use of the motion sensor 1 is terminated, the return to the original position is not performed, so that the operation of interrupting the current at the next use may not be smoothly performed.

Thus, in the present embodiment, each of the +/- terminals 5, 6 has a U-shaped groove 13 on the rail surface constituting the guide rail 11, as shown in Figs. 4, 6 and 7 Respectively. Thus, each of the +/- terminals 5, 6 allows the overlying energetic ball 7 to be resilient to longitudinal movement. However, for this purpose, the middle part of the case 3 and the partition wall 38 is cut off.

The energizing ball 7 is a switch for turning on / off the power supplied to the electric heating wire 110 of the electric mat 101 shown in Fig. 9 together with the +/- terminals 5 and 6 as described above, 8, the case 3 is mounted in the flow space S so as to be movable along the guide rail 11 as described above. Therefore, the energizing ball 7 is moved in the longitudinal direction of the case 3 or in the width direction of the case 3 when an impact is applied from the outside, and the contact of the rail 11, that is, the +/- terminals 5, Intermittently falls off. The contact between the energized ball 7 and the +/- terminals 5 and 6 is released with either one of the +/- terminals 5 and 6, ), It may occur simultaneously with all +/- terminals (5, 6). Naturally, the energizing ball 7 is cut off power supply to the heating wire 110 when it is separated from at least one of the +/- terminals 5, 6, and both the +/- terminals 5, 6 to maintain the contact with the heating wire 110.

9, the operation sensor 1 can be used as an automatic power cut-off device for an electric mat. The automatic power cut-off device 101 includes a heating wire 110, a power supply 120, A timer 130, and a motion sensor 1.

Here, the heating wire 110 is arranged to distribute evenly inside the mattress 140, as shown in Fig. 9, as means for heating the mattress 140 of the electric mat.

The power supply 120 is connected to the heating wire 110 as shown in FIG. 9 as a means for supplying power to the upper heating wire 110. By turning on / off the power supplied to the heating wire 110, The temperature of the heating wire 110 can be adjusted according to the use state.

The timer 130 is a means for adjusting or adjusting the operation time of the power supply 120 and is installed in the power supply 120 to be connected to the power supply 120 as shown in FIG. Bar, button, etc., are exposed to the outside of the power supply 120, so that the user can freely set the operation time.

Finally, the motion sensor 1 interrupts the current supplied to the heating wire 110 according to the impact caused by the movement of the mat user as described above, and is mounted inside the mattress 140 and connected to the timer 130 . Accordingly, the motion sensor 1 energizes or cuts off the current supplied to the heating wire 110 from the power supply 120 according to the motion of the mattress 140 in a variety of ways, The timer 130 is stopped when the energizing ball 7 is separated from the at least one +/- terminals 5 and 6 and then the counting is resumed when the energizing ball 7 is separated from the at least one +/- terminals 5 and 6, Lt; / RTI >

Hereinafter, the operation of the operation sensor 1 according to the preferred embodiment of the present invention and the automatic power cutoff device 101 of the electric mat using the same will be described.

According to the automatic power cut-off device 101 equipped with the motion sensor 1 of the present invention, the user turns on the mat 121 by turning on the switch 121 of the power supply 120 at sleep, .

Then, through the timer 130 for a desired time, for example, a bedtime of 7 hours is set.

When the user moves the mattress 140 by struggling while sleeping, the motion sensor 1 starts moving while moving along with the mattress 140. That is, the impact generated by the motion of the mattress 140 moves the motion sensor 1, and thus the energizing ball 7 moves in the flow space S in the case 3. [

At this time, the movement of the energetic ball 7 in the longitudinal direction of the case 3 follows the U-shaped groove 13 of the rail formed by the +/- terminals 5 and 6 in the case of the embodiment shown in FIG. , And the energizing ball 7 moving to one side in the longitudinal direction is directly reciprocated to be restored to the original position. In this process, if the roughness of the rail surface is rough or intentionally worked into a saw tooth shape, the energetic ball 7 instantly falls off at least one of the +/- terminals 5 and 6, ) Is momentarily disconnected and is immediately energized.

8, the energizing ball 7 raised above the rail surface not only instantaneously cuts off the current but also prevents the current from flowing along the long side of the case 3 It is immediately returned to its original position due to collision with the inner peripheral surface 43. However, at this time as well, the current-carrying ball 7 instantly falls off at least one of the +/- terminals 5 and 6, thereby instantaneously interrupting the current delivered to the heating wire 110, 7). However, when the current-carrying ball 7 is protruded from the rail 11, both of the +/- terminals 5 and 6 may be separated from the current-carrying ball 7. Since the rail clearance m is provided between the rail 11 and the inner peripheral surface 43 of the case 3 as shown in Fig. 8, when the motion sensor 1 is moved, the energizing ball 7 can be raised above the rail surface Therefore, it is possible to secure a sufficient time for the power-off, and it is possible to return to the home position easily by using the collision with the inner circumferential surface 43 of the case 3. As a result, the motion sensor 1 is immediately reconnected and re-counts the set time of 7 hours, in which case the user remains in the on state for the last 11 hours.

1: Motion sensor 3: Case
5, 6: +/- terminal 7: energized ball
11: guide rail 13: U-shaped groove
31: Body 33: Cover
35: projection 37: hole
38: partition wall 39, 40: assembly groove
43: inner peripheral surface 101: automatic power cutoff device
110: heating wire 120: power supply
130: Timer 140: Mattress
m: Rail clearance S: Floating space

Claims (5)

A case 3 forming an outer body and forming a flow space S therein;
Terminals 5 and 6 which are coupled in parallel in the case 3 so as to be exposed on the inner circumferential surface of the flow space S and form the guide rail 11 in the flow space S, ; And
And an energizing ball 7 mounted in the flow space S so as to be placed on the guide rail 11 and movable on the guide rail 11 when an external impact is applied,
When the current-carrying ball 7 moves on the guide rail 11 and contacts the +/- terminals 5 and 6 at the same time,
And disconnects the current when it is disconnected from either or both of the +/- terminals (5, 6). The method according to claim 1,
The case 3 includes a pair of mounting grooves 39 and 40 inserted into the flow space S so as to be inserted side by side so as to sandwich the +/- terminals 5 and 6,
The +/- terminals 5 and 6 are formed in the lengthwise direction of the case 3 so as to form the guide rail 11 on the bottom of the flow space S when they are fitted into the mounting recesses 39 and 40, To the second sensor. The method of claim 2,
The +/- terminals 5 and 6 are curved so that a rail surface forming the guide rail 11 has a U-shaped groove 13,
Characterized in that the case (3) is set such that the height of the flow space (S) allows movement of the energizing ball (7) along the guide rail (11). The method of claim 3,
The case 3 has a long side side inner peripheral surface 43 and an inner peripheral surface 43 of the case 3 forming the flow space S when the energetic ball 7 is placed on the guide rail 11. [ The distance between the respective +/- terminals 5 and 6 is defined as a rail clearance m and the rail clearance m is a sum of the rail clearance m and the +/- terminals 5, ) Is set to be smaller than the radius of the energizing ball (7). A heating wire 110 embedded in the mattress 140;
A power supply 120 connected to the heating wire 110 to turn on and off the power supplied to the heating wire 110 and adjust the temperature of the heating wire;
A timer 130 coupled to the power supply 120 to determine an operating time of the power supply 120; And
Claim 1 of the present invention relates to a method of controlling a mattress according to claim 1 wherein the mattress is mounted on the mattress so as to be connected to the timer and connected to or disconnected from a current supplied from the power supply to the heating wire, And an operation sensor (1) according to any one of claims 1 to 4.

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