JPS643998U - - Google Patents
Info
- Publication number
- JPS643998U JPS643998U JP9726887U JP9726887U JPS643998U JP S643998 U JPS643998 U JP S643998U JP 9726887 U JP9726887 U JP 9726887U JP 9726887 U JP9726887 U JP 9726887U JP S643998 U JPS643998 U JP S643998U
- Authority
- JP
- Japan
- Prior art keywords
- alarm
- variable resistor
- change
- sound pressure
- horn
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Emergency Alarm Devices (AREA)
Description
第１図は本考案の実施例を示す電気回路図、第
２図及び第３図は他の実施例を示す電気回路図、
第４図は音圧と平均電圧との関係を示すグラフ、
第５図及び第６図は従来例の電気回路図である。
１：警音器、２：ホーンスイツチ、３：電源バ
ツテリ、４：可変抵抗器、５〜９：配線材、１０
：ホーンリレー、１１：切替スイツチ、１２：集
音器、１３：騒音レベル検出器。
FIG. 1 is an electrical circuit diagram showing an embodiment of the present invention, FIGS. 2 and 3 are electrical circuit diagrams showing other embodiments,
Figure 4 is a graph showing the relationship between sound pressure and average voltage.
5 and 6 are electrical circuit diagrams of a conventional example. 1: Alarm, 2: Horn switch, 3: Power battery, 4: Variable resistor, 5 to 9: Wiring material, 10
: Horn relay, 11: Changeover switch, 12: Sound collector, 13: Noise level detector.
Claims (1)
電源バツテリと警音器との間に該警音器に直列に
可変抵抗器を配設し、該可変抵抗器の抵抗値の変
化による前記警音器の両端子間に加わる電圧の変
化により警音器の音圧レベルを変化させることを
特徴とする警音器の音圧調整装置。 In the alarm system of construction machinery equipped with a horn,
A variable resistor is disposed in series with the alarm between the power battery and the alarm, and a change in the voltage applied between both terminals of the alarm due to a change in the resistance value of the variable resistor generates an alarm. A sound pressure adjustment device for a warning horn, characterized by changing the sound pressure level of the sound device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9726887U JPS643998U (en) | 1987-06-26 | 1987-06-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9726887U JPS643998U (en) | 1987-06-26 | 1987-06-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS643998U true JPS643998U (en) | 1989-01-11 |
Family
ID=31322581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9726887U Pending JPS643998U (en) | 1987-06-26 | 1987-06-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS643998U (en) |
-
1987
- 1987-06-26 JP JP9726887U patent/JPS643998U/ja active Pending
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