KR940006070Y1 - Base of instrument which senses state for fire - Google Patents

Abstract

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Description

Fire Detector Base

1 is a partial perspective view of a fire detector base according to the present invention.

2 is a bottom exploded perspective view of the fire detector base according to the present invention.

3 is a cross-sectional side view of the main portion of the fire detector base according to the present invention, a is a state before the power line is drawn, b is a state after the power line is drawn.

Figure 4 is an exploded perspective view showing another embodiment of the power line fixing means according to the present invention.

5 is a side cross-sectional view of FIG.

6 is a view showing a modification of the pressing member according to the present invention.

* Explanation of symbols for main parts of the drawings

1: base body 3: support plate

4: protector 5: check plate

6: hole 7: pushbutton

8: pushing member 9: passage

10: elastic piece 11: braid

20: elastic member 30, 31: irregularities

The present invention relates to a fire detector base, and more particularly to a fire detector base that can improve the productivity by reducing the number of manufacturing process.

The fire detector, which is attached to the interior of a building to detect a fire and emits an alarm signal, consists of a base that can be attached to the building surface, and a heat sensing cap that detects an increase in room temperature in the event of a fire. It is attached to the wall and connected, and then the heat sensing cap is joined to the base.

However, in attaching the above-described fire detector to the wall, since the wiring of the power line is configured to attach using a screw provided in the terminal, the worker has a difficulty to work in an unreasonable attitude toward the ceiling.

Terminals that can facilitate wiring have been developed and put into practical use in various forms, but are difficult to apply to fire detectors, which are constrained by the installation space because they are relatively bulky.

Conventionally used fire detectors have a large number of parts, which are structurally complicated and difficult to manufacture. Also, when wires are connected, a sheathed wire is caught by the terminal, causing electrical distress. There is a drawback in that the reliability is lowered, such as causing.

In order to improve such a problem, the present applicant, in Korean Utility Model Application No. 90-4846, a check plate for firmly clamping the spiral portion of the power line in the inlet direction, and a lead plate drawn in opposite to the check plate A fire detector base with a terminal made of protectors was provided.

However, since the braid and the supporter are pressed to form a check plate, the fire detector base is a factor that lowers productivity due to a large number of press work steps.

In addition, since the bent braid and the spiral portion of the power supply line come into contact with each other, there is a disadvantage that the contact force is lowered.

The present invention is an improved application of the above-described utility model No. 90-4846, and aims to provide a base for a fire detector that can improve the productivity and reduce the number of working steps and improve the contact force of the power line.

In order to realize the object of the present invention as described above, in the base for a fire detector comprising a base body and a heat sensing cap having a wire entry terminal and attached to the ceiling surface of the building, the spiral portion of the power line The guide is formed and a hole is formed in the center, the protector is electrically connected to the circuit board with a screw, etc., and is formed integrally with the push button penetrating through the above-mentioned hole, and a passage penetrating up and down is formed. A pushing member for holding another opposing guide, and an elastic piece which is movably inserted into the passage and on one side is in contact with an inner surface of the support plate integrally formed with the base body, and enters in contact with the protector on the other side. A fire comprising a check plate having a braid for pressing the helix of the broken power line The base being provided for.

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

FIG. 1 is a partial perspective view of a fire detector base according to the present invention, and FIG. 2 is a bottom exploded perspective view, in which, reference numeral 1 denotes a base sieve, and 2 denotes a circuit accommodating chamber in which a conventional switching circuit board is accommodated.

A support plate 3 is integrally formed with the base body 1 at one upper end of the fresh circuit storage chamber 2, and the protector 4 and the check plate 5 are formed by the support plate 3. Are placed in sequential order.

The protector 4 has the same structure as the patent application No. 90-4846. A hole 6 is drilled in the center to allow the push button 8 to penetrate as shown in FIG. .

The push button 7 is formed integrally with the pushing member 8, and the pushing member 8 is formed with a passage 9 having a size through which the check plate 5 can be inserted. .

The check plate 5 penetrating through the passage 9 has an elastic piece 10 integrally formed at one end thereof and is elastically formed on the inner surface of the support plate 4 as shown in FIG. The other end is formed integrally with the braid 11 which is in contact with the spiral portion of the power line when the power line is drawn.

The elastic piece 10 is formed in a shape divided into both sides with respect to the check plate 5 as shown in FIG. 2 so that the check plate can be erected again by a restoring force even when the check plate is inclined to either side.

In addition, the braid 11 is separated into two, grooves 12 are formed between the left and right braids so that these two when the check plate 5 is inserted into the passage 9 of the pushing member 8. The push button 7 is coupled to the groove 12 between the braids 11 in a state where it is located.

Reference numerals 40 and 80 in the drawings facilitate the introduction of power lines as guides in a semicircle to the protector 4 and the pushing member 8, respectively.

As shown in Fig. 3, the check side plate 5 is seated on the support plate 3 in the inserted state of the passage 9 of the pushing member 8, and the protector 4 is secured. Assembling the protector 4 together with the circuit board L to the boss B by screwing the push button 7 integrally formed with the pushing member 8 into the hole 6 is completed.

In this state, the elastic piece 10 and the braid 11 of the check plate 5 are elastically positioned in contact with the inner surface of the support plate 3 and the protector 4, respectively. In this case, the pushing member 8 is movable.

Therefore, when the power supply line H is pushed between the protector 4 and the pushing member 8 in the state of FIG. 3a, the spiral portion S pushes the check plate 5, as shown in FIG. 3b. The check plate 5 is pushed. At this time, as shown in FIG. 3b, the check plate 5 is inclined in the inlet direction and the elastic piece 10 is elastically compressed to move upward in the drawing. Allow the entry of the spiral (S).

At this time, the spiral portion S entered is in a state in which the elastic piece 10 of the check plate 5 is elastically compressed and is in close contact with the protector 4 to be electrically conductive.

When the power line H is to be separated, pressing the push button 7 causes the pushing member 8 to further compress the elastic piece 10 so that the elastic force applied to the spiral portion S is lost. It can be easily removed by pulling it.

This absence method has an advantage in that it is not possible to push the check plate 5 when the spiral portion S of the power line is a stranded wire so that the connection can be made by pressing the push button 7.

Since the check plate only needs to bend the elastic pieces, the press process can be simplified and productivity can be improved.

4 is a view showing another embodiment of the power line fixing means of the present invention, the check plate of this embodiment can simplify the pressing process more than the check plate of the above embodiment.

In other words, the check plate 50 of this embodiment has a structure in which only the braid 110 is formed and no elastic piece is formed so that the function of the elastic piece can be used as the elastic member 20 separately.

Therefore, the groove 21 in which the elastic member 20 can be positioned is formed in the pushing member 8 to insert the check plate 50 into the passage 9 of the pushing member 8, and then the groove 21 described above. Positioning the elastic member 20 in the) to assemble so that one side end of the elastic member 20 in contact with the support plate 3 as shown in FIG.

In this configuration as well, drawing on the power supply line H is performed as in the above-described embodiment. Since the structure of the check plate 50 has only a braid, the press work process can be reduced.

As in the case of the two embodiments described above, the present invention allows the braid formed in a straight line on the check plate to be connected to the power line by the elastic force of the elastic piece or the elastic member. You can maintain the connection by force.

6 is a view showing a modification of the check plate according to the present invention, a is a modification of the check plate 5, b is a modification of the check plate 50.

These modifications are provided to form the unevenness (30, 31) in the front end surface of the braid 11 so that the spiral portion (S) of the power supply line is not separated even when the external force is applied.

As described above, the base for a fire detector according to the present invention can compensate for the shortcomings of Korean Utility Model Registration Application No. 90-4846, which can improve productivity and increase the reliability of the product.

Claims (4)

In the base for a fire detector having a base body and a heat sensing cap having a wire entry terminal and attached to the ceiling surface of the building, a guide 40 through which the spiral portion of the power line can be drawn is formed and a hole in the center ( 6) is formed through the protector (4) which is electrically connected to the circuit board (L) with a screw, and the push button (7) penetrating through the hole (6) is formed integrally with the passage (9) And a pushing member 8 having another guide 80 opposed to the guide 50 and movably inserted into the passage 9 and integral with the base sieve 1 on one side. An elastic piece 10 is formed in contact with the inner surface of the support plate 3 formed of the support plate 3, and on the other side, the check plate 5 having the braid 11 for pressing the spiral portion of the power line entered in contact with the protector 4. Fire detector bed Scotland. The base of claim 1, wherein at least one elastic piece (10) is formed on the check plate (5) and is elastically bent. The base as claimed in claim 1, wherein the check plate (5) is elastically supported by an elastic member (20). The base of the fire detector according to claim 1, wherein the braid (11) of the check plate (5) has an end portion formed with an unevenness (30) to prevent the power line from being separated.