KR20180009474A - Temperature sensor and it's manufacturing method for the electric mat - Google Patents

Abstract

The present invention relates to a temperature sensor for electric bedclothes and a manufacturing method thereof. More specifically, a temperature sensor, which is buried and installed inside a main body of electric bedclothes to sense the temperature of the inside of the main body, and transmits temperature information to a temperature adjusting device, is configured by serially installing a plurality of sensor devices in one lead wire at a predetermined distance away from each other. Each of the plurality of sensor devices are inserted and installed between two core lines exposed because a sheath of the lead wire is peeled, and a sealing member is coated around the core lines where the sensor devices are inserted and installed in order to maintain an insulation of the core line where the sheath is peeled. In addition, the temperature sensor is manufactured by a method comprising: a step (S1) of mounting and fixing the lead wire cut by a predetermined length on the top surface of a worktable of a sheath peeling device; a step (S2) of moving the sheath peeling device to a sensor device buried place of the lead wire fixed on the top surface of the worktable; a sheath cutting step (S3) of operating the moved sheath peeling device to operate upper and lower blades in an upper part and a lower part of the worktable of the lead wire, and cutting a sheath in the sensor device buried place; a sheath peeling step (S4) of moving or separating the cut sheath toward one side to expose core lines; a sensor device mounting step (S5) of inserting the sensor device capable of sensing the temperature between two core lines where the sheath is peeled; and a sealing member coating step (S6) of coating a sealing member around a core line mounting the sensor device to maintain an insulating state. The present invention is able to enhance durability of a product and users satisfaction.

Description

TECHNICAL FIELD [0001] The present invention relates to a temperature sensor and a manufacturing method thereof,

More particularly, the present invention relates to a temperature sensor for electric bedding and a method of manufacturing the same. More particularly, the present invention relates to a temperature sensor for electric bedding and a method of manufacturing the same. And a method of manufacturing the same.

Electric bedding, which is widely used in real life, such as electric bed, electric bed, electric mat, etc., is a heating device that generates heat by using electric power. It is difficult to use boiler or other building integrated heating device or it saves excessive economic cost increase And is widely used as a means for doing so.

When the electric heating bed is provided inside the main body and electricity is supplied to the electric bed, the heat is generated at a certain temperature in the heating line, and the heat is transferred to the surface of the main body to provide warm bedding to the users .

However, such electric bedclothes are often burned due to user's carelessness or malfunction of the apparatus during the process of generating heat at high temperature by using electricity, or due to the occurrence of excessive high temperature.

Therefore, in order to enable safe use of the electric bedding, a separate temperature detecting means (hereinafter referred to as a "temperature sensor") is provided in the bedding main body so that the heating wire is heated above the set temperature or the temperature inside the bedding- A safety measure is adopted to prevent abnormal heat generation or abnormally high temperature from being generated through control of the temperature regulator.

Conventionally, a method of installing a temperature sensor used in electric bedding includes a thermo-heating line system for controlling the temperature of a heating line through a heating line itself generating heat, and a temperature sensor separately from a heating line for generating heat, A method of detecting the temperature inside the flow, and a temperature control method in which the above two methods are mixed is mainly used.

The present invention relates to a temperature sensor of a bedding type electric bed which is configured to allow temperature control by providing a temperature sensor separately from a heating wire in electric bedding, and the prior art will be described below only in the technical field to which the present invention belongs.

When a temperature sensor is provided separately from the heating wire in the electric bedding main body, the temperature inside the bedding body heated by the heating wire is sensed and controlled rather than the heating temperature of the heating wire itself is controlled, Sensors are provided at a plurality of locations in the bedding main body to transmit heat to the surface of the main body, thereby providing a more advantageous effect for controlling the temperature at which the user senses the senses.

FIG. 1 shows a typical prior art embodiment of a bedding type in which a temperature sensor is provided on a bedding bed and a heating sensor is installed to detect a temperature inside the bedding body.

1, a heating wire 6 is provided in a zigzag shape in the main body 5 of the bedclothes 10 so as to be uniformly heated in the entire area of the main body 5, A plurality of temperature sensors 7 are installed in an empty space between the main body 5 and the main body 5 to detect the internal temperature of the main body 5 which is generated in the heating wire 6 to control the overall temperature of the bedding .

Therefore, when the conventional electric bedding 10 is manufactured, a heating wire is arranged in a zigzag form on the upper surface of the lower mat, a temperature sensor is disposed in the periphery of the heating wire, Is electrically connected to the connection connector 9 provided on one side of the main body after the main body 1 is not overlapped with the heating wire 6, and then the upper mat is superimposed on the upper mat with the heating wire 6 disposed thereon, At the same time, the electric bedding is manufactured by staking.

The electric bedclothes thus manufactured are rather more cumbersome to install the temperature sensor than the arrangement of the heating wire in the manufacturing process, and the cost specific gravity of the material per unit length is relatively higher than that of the heating wire.

That is, as shown in a partially enlarged view of FIG. 2, the process of connecting ends of a plurality of lead wires 8 connected to a plurality of temperature sensors on the side of the connector 9 is troublesome, and a plurality of lead wires 8 (C) and the connection connector (9), or a fire in the main body may occur due to contact with the heating wire during the use of the electric bedding, .

- Registered utility model No. 20-0371421 (Registered on December 20, 2004, name of design: electric version with built-in temperature control sensor) - Patent Registration No. 10-1115600 (Registered on Feb. 26, 2012, name of invention: electric plate capable of temperature control by region) - Patent Publication No. 10-2012-99562 (Publication Date: 2012.09.11, entitled "Partial Overheat Prevention Electric Mat)

The present invention has been made in order to solve the disadvantages of conventional electric bedding using a temperature sensor. It is intended to simplify the manufacturing process of electric bedding, reduce the cost of material cost, And to provide a temperature sensor for a bed sheet and a method of manufacturing the same.

In order to achieve the above object, a temperature sensor for a bed sheet according to the present invention is embedded in a body of an electric bed sheet to detect temperature inside the body and transmit temperature information to the temperature controller, A plurality of sensor elements are continuously installed in series with a predetermined interval maintained. In particular, each of the plurality of sensor elements is fitted between two exposed exposed core wires at a predetermined interval from a lead wire, And the sealing material is applied around the core wire from which the sheath is released so that the installed core wire portion is insulated.

According to another aspect of the present invention, there is provided a method of manufacturing a temperature sensor for a bed sheet, the method comprising: positioning and fixing a lead wire cut to a predetermined length on an upper surface of a work table of a casing; Moving the outer skin removing apparatus to the sensor element embedding position of the lead wire fixed on the upper surface of the work table; Cutting the one or both sides of the sensor element embedding position by using upper and lower blades simultaneously raised and lowered in the upper and lower portions of the workbench of the lead wire by turning on the operation switch of the moved sheathing device; Separating the cut outer shell from the core wire or lifting the cut outer core to one side so as to expose the core wire while moving the upper and lower knives cutting the outer shell from one side or the left and right sides of the lead wire embedded in the sensor element to either side of the left or right side; A sensor element mounting step of inserting a sensor element capable of temperature sensing between two exposed core wires of the sheath; A sealing material applying step of separating the lead wire with the sensor element from the outer skin removing device to apply the sealing material around the core wire embedded with the sensor element to maintain the insulated state; .

The temperature sensor for a bedding according to the present invention has a simple structure and a high degree of assembling performance, so that the productivity of the product can be improved.

In addition, the present invention is configured to connect temperature sensors to a plurality of points by connecting a plurality of sensor units with a single lead wire, thereby simplifying the configuration of the electric bedding to reduce the manufacturing cost of the product, Thereby reducing the risk and improving the durability of the product as well as improving the user's satisfaction.

FIG. 1 is an installation view of a heating wire and a temperature sensor provided inside a body of a bedding according to an embodiment of the present invention,
FIG. 2 is a partially enlarged view of the region A in FIG. 1,
FIG. 3 is a graph showing the appearance of the temperature sensor for a bedding according to the present invention,
4 is an assembled state diagram of a temperature sensor for a bedding according to the present invention,
FIG. 5 is a vertical sectional view taken along line B of FIG. 3,
FIG. 6 is a process flow diagram of a temperature sensor for a bed sheet according to the present invention,
7 is a view illustrating an example in which a lead wire is seated on a skin removing apparatus for manufacturing a temperature sensor for a bedding according to the present invention,
8 is a use state diagram of a temperature sensor for a bed sheet according to the present invention.

The temperature sensor for a bed sheet according to the present invention has a configuration in which a plurality of sensor elements are continuously connected in series with one lead wire while maintaining a predetermined gap therebetween, And a sealing member is applied around the core wire in which the sensor element is sandwiched, so that the core portion where the casing is peeled is maintained in an insulated state.

A method of manufacturing a temperature sensor for a bed sheet according to the present invention comprises the steps of: placing a lead wire, which is cut to a predetermined length and indicates the embedding position of a sensor element, on a top surface of a work table of a skin removing apparatus; Moving the outer skin removing apparatus to the sensor element embedding position of the lead wire fixed on the upper surface of the workbench with the sensor element embedding position being displayed; Cutting the one or both sides of the sensor element embedding position by using upper and lower blades simultaneously raised and lowered in the upper and lower portions of the workbench of the lead wire by turning on the operation switch of the moved sheathing device; Separating the cut outer shell from the core wire or lifting the cut outer core to one side so as to expose the core wire while moving the upper and lower knives cutting the outer shell from one side or the left and right sides of the lead wire embedded in the sensor element to either side of the left or right side; A sensor element mounting step of inserting a sensor element capable of temperature sensing between two exposed core wires of the sheath; A sealing material applying step of separating the lead wire with the sensor element from the outer skin removing device to apply the sealing material around the core wire embedded with the sensor element to maintain the insulated state; .

Hereinafter, a temperature sensor for a bed sheet according to the present invention and a method of manufacturing the same will be described in detail with reference to the accompanying drawings.

The 'temperature sensor' referred to in the description of the present invention includes a sensor element having an electrical characteristic that directly senses the temperature inside the body of the bedclothes, a lead wire for transmitting an electrical signal sensed by the sensor element to the thermostat Quot; is interpreted to mean " including "

FIG. 3 is a schematic view of a temperature sensor for a bedding according to the present invention, FIG. 4 is a schematic diagram illustrating a process of assembling a temperature sensor for a bedding according to the present invention, Sectional view of a lead wire for explaining the assembled state of the installed sensor element.

As shown in FIG. 3, a temperature sensor for a bed sheet according to the present invention includes a plurality of sensor elements embedded in one lead wire, detecting temperature information using a plurality of sensor elements installed through one lead wire, To the regulator side.

A state in which a plurality of sensor elements for temperature detection are assembled to one lead wire is schematically shown in Fig.

That is, a high temperature state is maintained by the heat generated through the heating wire inside the body of the electric bedding. In order to measure the internal temperature of the electric bedding, the present invention uses one lead wire, Are connected to one lead wire at a predetermined interval in series.

Therefore, in order to provide a sensor element capable of detecting the temperature using the electrical characteristic in the middle of the lead wire, the outer shell of the lead wire is partly removed at the position where the sensor element is installed, After inserting a sensor element having a small size in the middle, a sealing material made of an insulating material is applied to the exposed portion of the core wire to seal the exposed portion of the core wire, thereby completing one temperature sensor.

That is, the temperature sensor for bedding according to the present invention is characterized by having a structure in which a plurality of temperature measuring sensor elements are coupled to one lead wire, and one characteristic of connecting a plurality of sensor elements to the lead wire, A plurality of core wires are inserted between the two core wires without using a separate electrical connection means, and then the core wire is closed with a sealing material, thereby eliminating the need for a separate wire connection operation.

The core wire exposed to the outside after the outer sheath is unmolded on one lead wire, that is, the core wire is composed of two strands, and the ultra-small sensor element is sandwiched between the two strands, and then the core wire is insulated with the sealing material. And FIG. 5 shows a vertical cut section at one side of the lead wire to which the sensor element is coupled.

The sensor element of the temperature sensor applied to the present invention is a NTC (Negative Temperature Coefficient Thermistor) type thermosensitive element which utilizes a property of decreasing the resistance value with increasing temperature. In addition, other types of sensitive elements, that is, PTC A thermistor element, a CTR (critical temperature resistor) element, and the like, each of which has a unique resistance value.

Accordingly, the resistance value of the sensor element is lowered as the temperature rises in the body of the electric bedding, and depending on whether the set resistance value is reached or not, the power supplied to the bedding body from the temperature controller side is shut off or supplied, Temperature control of the flow rate.

It is preferable that the sealing material that surrounds the core wire from which the sheath is peeled off is made of a material having an insulation property such as epoxy and a convenient handling and workability.

As described above, in the temperature sensor for bedding according to the present invention, since a plurality of sensor elements are formed on one lead wire and one end of the lead wire is connected to the connection connector provided on one end of the bedding, It is much easier than that.

FIG. 6 is a simplified flow chart of the manufacturing process of the temperature sensor for a bedding according to the present invention. FIG. 7 is a cross-sectional view of the temperature sensor for a bedding according to the present invention, As shown in Fig.

Referring to FIG. 6, the manufacturing process of the temperature sensor according to the present invention will be described.

First, the lead wire cut to a predetermined length is seated on the upper surface of the worktable of the prepared sheathing apparatus and fixed (S1).

The lead wires are cut into various lengths depending on the size of the bedding to be used and both ends of the lead wires are fixed on the upper surface of the work surface by using the lead wire fasteners provided on the top surface of the work table of the outer skin removing apparatus regardless of the length of the lead wires.

Next, the outer skin removing apparatus is moved to the position where the sensor element is to be embedded in the lead wire fixed on the upper surface of the workbench (S2).

The position where the sensor element is to be embedded may be displayed on the lead wire sheath or by setting the sensor element embedding position with reference to the center of the top surface of the work table to move and fix the sheathing device.

7 is a perspective view showing a state in which the cut portion of the skin removing apparatus is fixed to the center of the top surface of the work surface while the lead wire is pulled from one side of the work table, There is shown an embodiment in which the sensor element embedding position of the lead wire is aligned with the center of the top surface of the workbench after the center of the top surface of the workbench is set to the sensor element embedding position while being fixed to the center of the top surface of the workbench.

As described above, when the cutter is moved to the position where the sensor element is embedded in the lead wire or the central portion of the workbench and then the operation switch of the outer skin stripper is turned on to operate the cutter portions spaced apart from each other in the upper and lower portions of the workbench, (S3) is performed in which the upper and lower blades cut the sheath at the sensor element embedding position of the lead wire.

However, if the outer shell is cut from both sides as required, both sides of the outer shell can be cut at the same time by using the double blade.

The cutting edge of the blade of the cut-off portion of the outer skin stripping apparatus is formed such that the tip end thereof is rounded so that the core wire provided inside the outer surface of the lead wire is not cut when the upper and lower blades are in contact with each other at the upper and lower surfaces of the outer skin.

When the upper and lower blades are moved to either one of the right and left sides in a state where the outer shell is cut at one or both sides of the lead wire in the sensor element embedding position, the outer shell having a certain elastic force is forcibly moved to the opposite side not cut at the cut portion, (S4) is performed so as to expose the core wire located inside.

A sensor element mounting step S5 for inserting the prepared sensor element between the exposed two strands of the sheath is carried out. Next, the lead wire on which the sensor element is mounted is separated from the outer sheath apparatus, The sealing material is applied to the periphery of the lead wire to complete the sensor element embedding at the sensor element embedding position of the lead wire by performing the sealing material applying step S6 so that the core wire portion is maintained in an insulated state from the outside.

Conventionally, in order to connect each sensor element to the core wire of the lead wire even if one lead wire is used, the cable is peeled off and then both ends of the wire are connected to the core wire and the sensor element, So that the process of installing the temperature sensor is very troublesome and the efficiency of the operation is deteriorated.

However, according to the present invention, when the sealing element is applied to the core wire at the portion where the outer skin is peeled, only the sealing material is applied, and the sensor element and the core wire are firmly coupled to maintain the conduction state of electricity. So that the efficiency of the work can be further improved.

Therefore, when a plurality of sensor elements are continuously embedded in a predetermined distance in a single lead line, the above-described steps S1 to S6 are repeatedly performed to complete a temperature sensor in which a plurality of sensor elements are embedded.

The use state in which the temperature sensor according to the present invention thus completed is installed in the body of the electric bedding is shown in Fig.

As shown in FIG. 8, heating wires are arranged in a zigzag shape at regular intervals in the body of the electric bedding, and a temperature sensor is provided so that the temperature sensing sensor element is positioned between the heating wires, To the connection connector provided on one side of the electrical bedding, the installation work of the temperature sensor can be easily completed.

5: Main body 6: Heating wire
7: Temperature sensor 8: Lead wire
9: Connector 10: Electrical bedding
20: lead wire 22: sheath
25: core wire
30: Sensor element 40: Sealing material
50: Temperature sensor
70: outer skin removing device 72, 72a:
74: upper blade 74a: lower blade
75: Workbench
C: Thermostat

Claims (2)

1. A temperature sensor for electric bedding embedded in a main body of a bedding, for sensing a temperature inside the main body and transmitting temperature information to a temperature controller,
The temperature sensor has a configuration in which a plurality of sensor elements are continuously connected in series with one lead wire while maintaining a constant interval,
Wherein each of the plurality of sensor elements is provided so as to be sandwiched between two exposed core wires of the lead wire, and a sealing member is applied around the core wire in which the sensor element is inserted, And a temperature sensor for electric bedding. (S1) placing and fixing the lead wire cut to a predetermined length on the upper surface of the worktable of the outer skin removing apparatus;
(S2) moving the outer skin removing apparatus to the sensor element embedding position of the lead wire fixed on the upper surface of the workbench;
(S3) for cutting one side or both sides of the sensor element embedding position by using upper and lower blades simultaneously raised and lowered in the upper and lower parts of the workbench of the lead wire by turning on the operation switch of the moved sheathing device;
(S4) a step of separating the cut-off sheath from the core wire or lifting the cut-off sheath to one side to expose the core wire while moving the upper and lower blades cut from the one side or the left and right sides of the lead wire at the sensor element embedding position to either one of the left and right sides.
A sensor element mounting step (S5) for inserting a sensor element capable of temperature sensing between two exposed core wires of the sheath;
A sealing material applying step (S6) for separating the lead wire equipped with the sensor element from the outer skin removing device to apply the sealing material around the core wire embedded with the sensor element to maintain the insulation state; And a temperature sensor for detecting a temperature of the bed.

Images