JP2002333150A - Device for fixing heating wire and sensor wire of electric carpet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for fixing heating wires and sensor wires, in which cladding materials on respective ends of heating and sensor wires can be simultaneously peeled off, soldering to connection fittings can be automated, the number of man-hours can be reduced by facilitating the peel-off work, and tension holding power for the heating wires and the sensor wires can be improved. SOLUTION: The heating wires 7 and the sensor wires 8 are connected to a PC board (printed circuit board) in a control case 9. A fixing frame 11 holding the respective wires is attached to a rib 14 in the control case 9. Fitting grooves 13 are provided in the frame 11 for grasping and fixing respectively the heating wires 7 and the sensor wires 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric carpet heater for connecting a heater wire and a sensor wire wired inside a planar heating device such as an electric carpet to a PC board in a control case for controlling temperature and the like. It relates to a device for fixing wires and sensor wires.

[0002]

2. Description of the Related Art Conventionally, when a heater wire and a sensor wire are wired inside a main body such as an electric carpet or the like, a controller for controlling the temperature of the heater wire is used.
The ends of the heater wire and the sensor wire were soldered.

[0003] Specifically, the insulation coating of the heater wire or the sensor wire is peeled off one by one to expose the heater metal wire or the sensor metal wire inside, and this is exposed directly to the PC board or to the connection fitting. Solder one by one to the PC board via the terminal. When the heater wire and the sensor wire are pulled from the outside of the control case, the holding against the pulling can be done by sandwiching between the upper and lower control cases and soldering to the PC board. The heater wire or the sensor wire was held by caulking with the attached wire fixing bracket.

[0004] In the case where the connection of the heater wire and the sensor wire is made by the above-mentioned connection fitting method, the conventional problems are how to secure the tensile holding force of the heater wire and the sensor wire. It is how to reduce the man-hour for peeling the wire skin of the heater wire and the sensor wire and connecting to the connection fitting.

On the other hand, as another conventional example, as shown in FIG. 14, a main body 1, a heating wire 2 and a heat-sensitive wire 3 wired to the main body 1, and a heating wire 2 attached to an edge of the main body 1. And a controller 4 for controlling the temperature of the
A device disclosed in Japanese Unexamined Utility Model Publication No. 6-77192 concerning a planar heating device characterized in that a spare part 6 for repairing when the soldering terminal portion 5 of the heating wire 3 or the heat sensing wire 2 is broken is provided on the controller 4 side. I have.

However, in the above invention, the heater wire, ie, the heating wire 2 and the sensor wire, ie, the heat sensing wire 3, are peeled off one by one, and the heating wire 2 and the heat sensing wire 3 are soldered. The tension stop is sandwiched by the case of the controller 4, and when the PC board is removed at the time of repair, there is a problem that the heating wire 2 or the heat-sensitive wire 3 is pulled and may be disconnected. 1 hot wire 3
There is a problem that man-hours are required for connection since the wires are peeled off one by one and wired to a PC board.

[0007]

SUMMARY OF THE INVENTION According to the present invention, one end of a heater wire and a sensor wire are held by a fixed frame and the fixed frame is fixed to a rib in a control case so as to be fixed. An electric carpet heater that can be peeled at the same time and can also be automatically soldered to the connection fittings, facilitating the peeling work, reducing the number of assembling steps, and improving the tensile holding force of the heater wire and sensor wire. Provide a device for fixing wires and sensor wires.

[0008]

According to the present invention, a heater wire and a sensor wire of an electric carpet are connected to a PC board in a control case, and a fixing frame holding the heater wire and the sensor wire is fixed to a rib in the control case. The fixing frame includes a fixing device for a heater wire and a sensor wire of an electric carpet provided with a fitting groove for gripping and fixing each of the heater wire and the sensor. The electric carpet comprises a fixing device for a heater wire and a sensor wire using a lid provided with a hook for pressing and fixing the heater wire and the sensor wire.

Further, according to the present invention, an upwardly projecting wall is erected substantially at the center of the inner bottom of the above-mentioned fixed frame, and downwardly projecting walls are provided at both ends of the long side of the lid. It consists of an electric carpet heater wire and sensor wire fixing device that fixes the heater wire and the sensor wire in a mountain shape by closing the lid.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a control case 9 of a control device 9 for fixing a heater wire and a sensor wire of an electric carpet according to one embodiment. FIG. 2 is a plan view showing a main part of the fixing part, and FIG. 2 is a side sectional view of the main part in the AA direction of FIG.
A set of one sensor wire 8 is connected as a set to a PC board 10 in a control case 9 by solder 15, and a fixed frame 11 made of plastic or the like that holds the heater wire 7 and the sensor wire 8 is provided in the control case 9. It is attached to the U-shaped groove of the rib 14 so as to be fixable.

The fixing frame 11 is provided with U-shaped grooves 13 each having a width slightly smaller than the outer diameter of each of the heater wires 7 and the sensor wires 8 for gripping and fixing each of them.

Further, the fixing frame 11 is provided with a hook 16 for pressing and fixing the heater wire 7 and the sensor wire 8 shown in FIG.
The heater 12 and the sensor wire 8 are held in the fitting groove 13 of the fixed frame 11 shown in FIG.
Is pressed from above as shown in FIGS. 3 and 4 to lock and lock the lid 12 to the fixed frame 11 with the hook 16.

In the present invention, the upwardly projecting wall 21 is provided substantially at the center of the inner bottom of the fixed frame 11, and the downwardly projecting wall 22 is provided at both ends of the long side of the lid 12. By providing a lid 12 on the fixed frame 11, the heater wire 7 and the sensor wire are sandwiched between the fixed frame 11 and the lid 12 in a mountain shape and fixed.

This is because the heater wire 7 and the sensor wire 8 can be formed only by tightly fitting the fitting groove 13 of the fixing frame 11.
Therefore, by providing the upwardly projecting wall 21 and the downwardly projecting wall 22, the heater wire 7 is also provided inside the fixed frame 11 by the fixed frame 11 and the lid 12.
This is to provide a structure for holding the sensor wire 8 to increase the holding force.

That is, according to the above structure, the heater wire 7 and the sensor wire 8 fixed by the fixed frame 11 and the lid 12 are provided.
As shown in FIG. 2, the heater wire 7 and the sensor wire 8 are pushed upward by a convex wall 21 substantially at the center of the fixed frame 11 and pushed down by downward convex walls 22 at both ends of the lid 12. At the same time, the heater wire 7 and the sensor wire 8 coming out of the fixed frame 11 are also depressed. When the fixed frame 11 is fitted in the lower case of the controller case 9 and mounted on the PC board 10, the heater wire 7 and the sensor The wire 8 rides on the PC board 10 so as to be in close contact therewith, so that the soldering work becomes easy.

In the present invention, the upward convex wall 21 is erected substantially at the center of the inner bottom portion of the fixed frame 11, but on the contrary, a downward convex wall is provided on the lower surface of the lid, and the lid is attached. A structure in which the heater wire and the sensor wire are inserted into the fixed frame while being sandwiched is also conceivable. However, in this case, the heater wire and the sensor wire float from the PC board, and there is a disadvantage that the soldering operation becomes difficult.

Next, as a process of assembling the electric carpet according to the present embodiment, the heater wire 7 and the sensor wire 8
These wires are attached to the fixed frame 11, the fixed frame 11 is covered with the cover 12, and the insulating skin at the end of the wire is peeled. In this case, since three lines are fixed in parallel,
Peeling and wiring work can be performed on the wires at the same time.

Next, the PC board 10 is fixed in the lower case of the controller case 9 shown in the main part plan view of FIG. 13, and is inserted into the hole 18 provided at a predetermined position of the cloth 17 of the main body 1 of the electric carpet. After the lower case of the controller case 9 is set, the fixing frame 11 is inserted into the PC board 10 with the fixing frame 11 attached to the U-shaped groove of the rib 14 of the controller case 9, and fixed with the hook 20 and the convex wall 22. Then, each end of the heater wire 7 and the sensor wire 8 gripped and fixed to the fixed frame 11 is attached to a terminal of the PC board 10 with solder 15.

Thus, two heater wires and one sensor wire 1
By setting the three lines as a set and sandwiching them in the fixed frame 11, the three lines can be peeled at the same time, and the connection of each line can be easily positioned, and each line is gripped by the fixed frame 11. Since the wires are fixed, the tension holding force of each fixed wire can be increased, and the wire can be prevented from coming off due to pulling. After the assembly in FIG. 13 is completed, the upper case is fixed to the upper portion with screws or the like.

Next, the structure of the fixed frame 11 and its lid 12 used in this embodiment are shown in FIGS. 5 to 12, wherein FIG. 5 is a side view of the fixed frame 11, and FIG. 5 is an upper plan view in the BB direction, FIG. 7 is a side sectional view in the CC direction in FIG. 6, and FIG. 8 is a side sectional view in the DD direction in FIG. Reference numeral 19 denotes a fitting groove which fits in the rib 14 of the controller case 9, reference numeral 20 denotes a hook which is engaged with the PC board 10 shown in FIG. It becomes the 10th deviation prevention wall.

FIG. 9 is a plan view of the back surface of the lid 12, and FIG.
0 is a side view in the EE direction of FIG. 9, and FIG.
FIG. 12 is a top plan view in the F direction, and FIG. 12 is a side view in the GG direction in FIG. 9, in which 16 is the hook in FIG. 2 for fixing the heater wire 7 and the sensor wire 8 described above. A lid 12 that is pressed and fixed in the frame 11 is locked and fixed to the fixed frame 11 by the hook 16.

In the above embodiment, the fixing device for the two heater wires 7 and one sensor wire 8 is shown, but the present invention is also applicable to a wire having a structure in which the heater wire and the sensor wire are integrated. The apparatus of the invention can be applied, in which case an even number of lines, such as two or four, can be fixed.

[0023]

According to the above-described apparatus for fixing a heater wire and a sensor wire of an electric carpet according to the present invention described above, a plurality of heater wires and sensor wires are set and fixed by a fixed frame. The bundling and peeling of multiple pieces can be performed simultaneously, wiring positioning when assembling with the PC board is easy, soldering can be automated, and the tension holding force of each wire increases, preventing pull-out. Can be measured.

Further, the fixing frame and the lid of each line are locked by hooks to increase the tensile strength of each line sandwiched, and the fixing frame is attached to the rib of the control case. Since it is locked with a hook and is almost integrated, it is possible to prevent disconnection at the time of repair and to easily position the PC board.

[Brief description of the drawings]

FIG. 1 is a plan view showing a main part of a fixing portion of a control case of a fixing device of the present invention.

FIG. 2 is a side sectional view of a main part in the AA direction of FIG. 1;

FIG. 3 is a perspective view of the fixing frame and the cover of FIG. 2 before the lid is attached.

FIG. 4 is a perspective view when a lid is attached to the fixed frame of FIG. 3;

FIG. 5 is a side view of the fixing frame of FIG. 2;

FIG. 6 is an upper plan view in the BB direction of FIG. 5;

FIG. 7 is a side sectional view taken along the line CC of FIG. 6;

FIG. 8 is a side sectional view taken along the line DD of FIG. 6;

FIG. 9 is a rear plan view of the lid of FIG. 2;

FIG. 10 is a side view in the EE direction of FIG. 9;

FIG. 11 is an upper plan view in the FF direction of FIG. 10;

FIG. 12 is a side view in the GG direction of FIG. 9;

FIG. 13 is a plan view of a main part of a lower case of the controller case of FIG. 1;

FIG. 14 is a plan view of a main part of a conventional planar heating device.

[Explanation of symbols]

 Reference Signs List 7 heating wire 8 sensor wire 9 control case 10 PC board 11 fixing frame 12 lid 13 fitting groove 14 rib 16 hook 21 upward convex wall 22 downward convex wall

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Makoto Kazushi 500 Toyoshina, Toyoshina-cho, Minamiazumi-gun, Nagano Prefecture F-term (reference) in Nippon Electric Heating Co., Ltd.

Claims (3)

[Claims] 1. A heater wire and a sensor wire of an electric carpet are connected to a PC board in a control case, and a fixing frame holding the heater wire and the sensor wire is attached to a rib in the control case so as to be fixable. Is an electric carpet heater wire and sensor wire fixing device provided with a fitting groove for holding and fixing each of the heater wire and the sensor. 2. A fixing device for a heater wire and a sensor wire of an electric carpet according to claim 1, wherein a lid provided with a hook for pressing and fixing the heater wire and the sensor wire is used for the fixing frame. 3. An upwardly projecting wall is erected substantially at the center of the inner bottom portion of the fixed frame, and a downwardly projected wall is provided at both ends of the long side of the lid to cover the fixed frame. 3. The fixing device according to claim 2, wherein the heater wire and the sensor wire are pressed and fixed in a mountain shape.