KR930002419Y1 - Base sensing fire - Google Patents

Abstract

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Description

Fire Detector Base

Figure 1 is an exploded perspective view showing the main portion of an embodiment of the present invention.

2 is a partial perspective view showing the bottom of the main portion of FIG.

Figure 3 is a side cross-sectional view showing a wire binding state according to the present invention.

Figure 4 is an exploded perspective view of the main part related to another embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1: Base 4: Protector

5: check plate 6: hanging jaw

9,90: Braid 11: Wiring insertion groove

13: release button 50: support order

60: Guard

The present invention relates to a base for fire detection.

The fire detector, which is attached to the interior of the building to detect a fire and emits an alarm signal, consists of a base to be fixed to the building wall and a heat sensing cap to detect room temperature rise in the event of a fire. After attaching and connecting, the heat cap is attached to the base which was electrically connected.

By the way, in attaching the above-described fire detector to the wall surface, the wiring of the power line has a structure to attach using a screw provided in the terminal, for this reason, the operator has a difficult point to work in an unreasonable position toward the ceiling.

In order to solve the above-mentioned difficulties, it would be best to improve the terminal of the fire detector to a structure that facilitates the connection of the power line.

Terminals that can facilitate wiring have been developed and put into practical use in various forms. However, since the terminals are relatively bulky, they are difficult to apply to fire detectors that are attached to the installation space.

On the other hand, the cable connector disclosed in Japanese Patent Application Laid-Open No. 61 186173 has to be miniaturized so that it can be applied to a fire detector in a configuration consisting of a terminal having a curved end portion having its own elastic force and a terminal having a flat portion contacting the terminal. It is equipped with the terminal of the structure that I can do.

However, in the cable connector, the contact state between the terminal and the terminal can be maintained by the combination of the socket and the plug. On the other hand, since the socket and the plug are not necessary in the fire detector, there is a problem of contact failure when it is applied as it is. There are disadvantages.

In order to solve this problem, the inventor has produced a fire detection base that can be inserted into the spiral portion of the power line through the Republic of Korea Utility Model Application No. 88-7835, but disclosed herein The method is complicated and difficult to manufacture due to the large number of parts, and the manufacturing cost is high, but the wire is often stuck to the terminal during wiring, causing electrical distress. There is a flaw that falls.

The object of the present invention is to provide a fire clamping base of which a spiral part of a power line can be inserted, so that the spiral part can be clamped securely, which has a high reliability and a simple structure, and can be miniaturized and easily assembled and produced. It is provided in a fire detector base.

Accordingly, the present invention includes a terminal plate made of a clamp plate that firmly clamps the inserted spiral portion into the inlet reflection direction and a protector which is positioned opposite to the check plate and prevents the wire from covering the wire.

The check plate has a braid that is bent in the wire entry direction, which braid can be divided substantially by two cuts.

The protector may also have an inlet curved to a diameter slightly larger than the outer diameter of the helix of the wire and slightly smaller than the outer diameter of the sheath.

The check plate and the protector are located opposite each other to form a terminal.

In order to stably maintain the assembled state between the check plate and the protector constituting the terminal, either one of the parts may include a support.

In addition, in order to be able to pull out the connected spiral part from the terminal, the base body for releasing the bite of the spiral part by applying pressure to the check plate is inserted after the connection to arrange the power wires scattered around. It may include a groove.

The wiring insertion groove may be integrally formed on the outer side of the circuit storage chamber.

Hereinafter, as a perspective view showing a preferred embodiment of the present invention, the protection (1) in the figure refers to the base body, (2) refers to the circuit storage chamber in which a conventional switching circuit board is accommodated.

The support protrusion 3 is integrally formed in the upper end of one side of the circuit storage chamber 2, and the protector 4 and the check plate 5 are inserted in order by this support protrusion 3, and are mutually opposed. Is assembled.

In the front of the protector 4, a latching jaw 6 for restraining the covering part of the electric wire from entering is interposed between the cutout part 7 and a pair of bent side by side in the forward direction. And a connecting piece 8 to be connected to each other.

The locking jaw 6 is preferably in a shape that can prevent the covering of the wire, for example, the surface contacting the spiral of the wire is smaller than the outer diameter of the wire and slightly larger than the diameter of the spiral. It is formed into an arc shape having a so that only the spiral portion can be drawn in.

In addition, the check plate 5 holds the braid 9 bent in the inlet direction at the front side, and forms a connecting piece 10 for connecting to the circuit board in the same manner as the protector 4 at the rear side.

A plurality of wiring insertion grooves 11 are integrally formed on the side located at the center of the base body 1 on the outer periphery of the circuit storage chamber 2 described above.

A pair of projections 12 opposed to each other are formed at the inlet side of the wiring insertion groove 11 so that the inserted wires do not detach themselves.

When the above-described protector 4 is assembled to the base body 1, as shown in FIG. 2, the release button 13 extending inwardly of the circuit storage chamber 2 includes the protector 13 and the protector 4. By being located in the cutout 7 of the contact with the end of the braid (9).

The separation button 13 is integrally connected to the base body 1 through an extension portion 14 having a thickness that is thinner than the periphery.

3 is a cross-sectional view showing a state in which the electric wires are bound by the above-described invention, wherein the spiral portion S of the electric wire W is located at both sides of the release button 13 as shown in a). (4) is pushed in between the engaging jaw 6 and the braid 9 of the check plate 5 to bind.

Pressing the release button 13 in the direction of the arrow X with a hand or a suitable tool to facilitate insertion of the spiral portion S in the binding operation, the release button 13 is pushed through the braid 9 while protecting the protector ( Make a gap between 4) and braid (9). If the release button 13 is released after inserting the spiral portion S into this gap, as shown in b), the braid 9 is in close contact with the protector 4 with its own elastic force, and the spiral portion S is clamped. Done.

On the other hand, since the extension portion between the spiral portion (S) and the wire (W) is placed on the engaging jaw (6) of the protector (4) and positioned higher than the braid (9), the spiral portion (S) after clamping is braid (9) Since it is pressed and bent), it comes into contact with the protector 4 with a relatively large area, and electrical conductivity is good.

In this way, the spiral portion S of the wire W sandwiched between the protector 4 and the braid 9 is bitten by the braid 9 which is inclined obliquely in the inlet direction with respect to the protector 4, and then proceeds only in the inlet direction. And difficult to exit in the opposite direction.

On the other hand, since the outer diameter of the covering portion of the wire W is larger than the inner diameter of the locking jaw 6 of the protector 4 during the drawing process, it is restrained by the locking jaw 6 to be sandwiched between the protector 4 and the braid 9. It becomes impossible.

This means that contact failure due to the covering of the wire W being caught between the protector 4 and the braid 9 can be essentially prevented.

If the spiral part S, which is bound between the protector 4 and the braid 9, is to be pulled out again, pressing the release button 13 is far from the protector 4 and the braid 9 as described above. Since it is possible to pull out the inserted wire (W) simply.

4 is a main perspective view showing another embodiment of the present invention, and shows a modification of the protector 4 and the check plate 5.

The protector 4 is formed of a semicircular guard 60 having a slightly raised tip instead of the engaging jaw 6 of the above-described embodiment, and the check plate 5 is divided into a pair of braids left and right. And a supporter 50 which extends alongside the braid 90.

In the above-described embodiment, the protector 4 and the check plate 5 have a one-point support structure which is integrally connected on the circuit board, so that the support relationship between the two parts is in an unstable state, and one wire W continues. Then, when the release button 13 is pressed in order to bind another wire W, the braid 9 already biting the wire W may be linked to change the clamping state.

However, this embodiment is stable because the supporter 50 is interposed between the protector 4 and the check plate 5 so that two points are supported together with the connection portion on the circuit board side. Since the braid 90 is divided into two so that only the corresponding release button 13 is interlocked with each other, there is no fear that the binding state is changed by the wire W, which is first bound by the wire W, which is later bound, thereby improving reliability. do.

Claims (6)

In a conventional fire detection base having a wire entry terminal having a shape having a self-elastic force so that a spiral portion of a wire can be clamped, the surface in contact with the spiral portion S of the wire W is connected to the wire W. A pair of arcuate latching jaws 6 having a diameter smaller than the outer diameter of the covering portion and having a diameter larger than the diameter of the spiral portion S is bent side by side forward with the cutout portion 7 interposed therebetween, and at the rear side. (8) has an extended protector (4) and a check plate (5) formed at the front of the braid (9) is bent in the inlet direction of the wire (W) and the connecting piece (10) at the rear. The check plate (5) is a base for a fire detector, characterized in that it is arranged to be supported by a support projection (3) formed in the circuit pressure chamber (2) of the base body (1). 2. The fire detector base according to claim 1, characterized in that the check plate (5) has a braid (90) divided in two. The fire according to claim 1, characterized in that the catching jaw (6) of the protector (4) is formed of a guard (60) curved at a radius slightly larger than the outer diameter of the spiral portion of the wire and slightly smaller than the outer diameter of the covering portion. Sensor base. The fire detector base according to claim 1, wherein the check plate (5) has at least one supporter (50) which is in contact with and is supported by a protector (4). The fire detector according to claim 1, wherein the separating button 13 formed integrally with the base body 1 is arranged so that the lower end thereof is in contact with the braid 9 of the check plate 5. Base. 6. The fire detector base according to claim 1 or 5, wherein the base body (1) is formed with a wiring insertion groove (11) for organizing the electric wire (W).