JPS5829875Y2 - Thermal safety device mounting device - Google Patents

Description

【考案の詳細な説明】 この考案は例えば電気機器等の異常過熱を感知してその
付勢回路を遮断する安全装置の取付装置に関するもので
ある。[Detailed Description of the Invention] This invention relates to a mounting device for a safety device that senses abnormal overheating of, for example, electrical equipment and interrupts its energizing circuit.

第１図はバイメタルを内蔵した従来の熱動形安全器本体
の外観を示すものであり、これは図示のように胴部２、
その取付肩部３，３および端子４，４から形成されてい
る。Figure 1 shows the appearance of a conventional thermal safety device body with a built-in bimetal.
It is formed from its mounting shoulders 3,3 and terminals 4,4.

また第２図は上記安全器本体の取付使用状態を示すもの
で、図イにおいて１は上記の安全器本体、５はこの安全
器本体が取付けられる被保護機器、６はこの機器５上に
載置状態に取付けられた端子箱、７はこの端子箱の内底
面に設けたナツト、８は端子箱６の底部開口１１を利用
して安全器本体１の感熱面１２を上記機器５に接するよ
うに取付けるための固定ネジである。Fig. 2 shows the installation and usage state of the safety device main body, and in Fig. A, 1 is the above safety device main body, 5 is the protected device to which this safety device body is attached, and 6 is the device mounted on this device 5. 7 is a nut provided on the inner bottom surface of the terminal box, and 8 is a terminal box that is installed in the terminal box so that the heat-sensitive surface 12 of the safety device body 1 comes into contact with the device 5 using the bottom opening 11 of the terminal box 6. This is a fixing screw for attaching to.

すなわち第２図イの構成においては、安全器本体１はそ
の取付肩部３を介して固定ネジ８をナツト７にねじ込む
ことによりその感熱面１２が機器５に接するように固定
されるようになっている。That is, in the configuration shown in FIG. 2A, the safety device main body 1 is fixed by screwing the fixing screw 8 into the nut 7 through the mounting shoulder 3 so that the heat-sensitive surface 12 is in contact with the device 5. ing.

したがってこのような取付手段では安全器本体１の取付
肩部３とナツト７とが比較的離れているため固定ネジ８
の締め過ぎが生じやすく、ために取付肩部３に大きな力
が加わり、鉄部の破損を起こしやすいという欠点があっ
た。Therefore, in such a mounting means, the mounting shoulder 3 of the safety device main body 1 and the nut 7 are relatively apart, so the fixing screw 8
This has the disadvantage that it tends to be over-tightened, which causes a large force to be applied to the mounting shoulder 3, which tends to cause damage to the iron part.

また第２図口は他の従来例で図中の９は端子箱６の内側
壁に取付けた取付具で、この場合の安全器本体１の取付
けは、その取付肩部３を介して固定ネジ８を上記取付具
９にねじ込むことにより行なわれる。In addition, the opening in Figure 2 is another conventional example, and 9 in the figure is a fixture attached to the inner wall of the terminal box 6. 8 into the above-mentioned fixture 9.

したがって第２図口の取付手段では安全器本体１の取付
肩部３の高さく製作時のバラツキあり）にあわせて取付
具９の付設位置が決るが、この取付具９の取付作業時に
その高さにバラツキが生じやすく、これがため取付具９
の高さと安全器本体の取付肩部３の高さが合致しない場
合が生じ、安全器本体１の感熱面１２が機器５より浮き
上がって、この被保護機器の温度感知ができなくなる場
合が起こる。Therefore, in the mounting means shown in Figure 2, the mounting position of the fixture 9 is determined according to the height of the mounting shoulder 3 of the safety device main body 1 (there may be variations during manufacturing), but when installing the fixture 9, the height is determined. It is easy to cause variations in the height of the mounting bracket 9.
The height of the safety device body 1 may not match the height of the mounting shoulder 3 of the safety device body, and the heat-sensitive surface 12 of the safety device body 1 may rise above the device 5, making it impossible to sense the temperature of the protected device.

この考案は上記のような不都合を取り除くように考えた
もので、以下第３図のこの考案の実施例について説明す
ることにするが、図中の１．５，６．８は第２図中の同
一符号の従来品と同一に構成されている。This device was designed to eliminate the above-mentioned inconveniences, and the embodiment of this device shown in Fig. 3 will be explained below. It has the same structure as the conventional product with the same reference numeral.

また１０は端子箱６の内側壁に取付けた弾性取付腕であ
る。Further, reference numeral 10 denotes an elastic mounting arm attached to the inner wall of the terminal box 6.

そしてこの取付腕１０には第３図イで示すようにくびれ
部１０ ａを作りその先端取付部１０ｂにはネジ穴が設
けられており、端子箱６の内側壁への取付けに際しては
第３図へ（端子箱６の固定状態）で示すように取付腕１
０の上面と機器５上に載置した安全器本体１の取付肩部
３の下面とには隙間Ａができるように予めその取付位置
を選定する。The mounting arm 10 has a constricted part 10a as shown in FIG. 3A, and a screw hole is provided in the end mounting part 10b. As shown in (fixed state of terminal box 6), attach the mounting arm 1.
The mounting position is selected in advance so that a gap A is formed between the upper surface of the safety device 0 and the lower surface of the mounting shoulder 3 of the safety device body 1 placed on the device 5.

すなわちこの隙間Ａは安全器本体１の取付肩部３の高さ
のバラツキや取付腕１０の取付位置のバラツキなどを消
去すことより安全器本体１の感熱面１２が被保護機器５
の表面から浮き上がることのないようにするためのもの
で、これにより安全器本体１の作動精度が決定される。In other words, this gap A is created by eliminating variations in the height of the mounting shoulder 3 of the safety device main body 1 and variations in the mounting position of the mounting arm 10, so that the heat-sensitive surface 12 of the safety device main body 1 is located close to the protected device 5.
This is to prevent the safety device from rising from the surface of the safety device body 1, and this determines the operating accuracy of the safety device body 1.

すなわち具体的には安全器本体１は第３図口のように取
付肩部３を介して固定ネジ８を取付腕１０に締め付けて
固定するが、このとき固定ネジ８の頭が取付肩部３に触
れるまで締め付けた後もなおこれをねじ込むと、取付腕
１０のくびれ部１０ａが湾曲し、最後は上記隙間Ａだけ
変形して取付肩部３の下面に先端部１０ ｂが接触し、
この状態で固定ネジ８が確実に締まることになる。Specifically, the safety device main body 1 is fixed by tightening the fixing screw 8 to the mounting arm 10 via the mounting shoulder 3 as shown in FIG. If it is screwed in even after it has been tightened until it touches, the constriction 10a of the mounting arm 10 will curve, and finally it will deform by the gap A, and the tip 10b will come into contact with the lower surface of the mounting shoulder 3.
In this state, the fixing screw 8 will be securely tightened.

なお上記の第２図口、への実施例では、取付腕１０にく
びれ部１０ ａをつけてこのくびれ部１０ ａの湾曲を
利用したが、同図二のように取付腕１０それ自体の先端
部における変形を利用してもよい。In the embodiment shown in FIG. 2 above, the mounting arm 10 is provided with a constricted portion 10a to utilize the curvature of the constricted portion 10a. However, as shown in FIG. You may also utilize deformation in the section.

この考案は以上のように安全器本体１の取付肩部３の高
さのバラツキや取付腕１０の取付位置のバラツキを予め
考慮に入れて、取付腕とその肩部との間にバラツキ消去
用の隙間Ａを設けているので、安全器本体１を常に機器
５に接した確実な作動状態に取付けることができるばか
りでなく、取付肩部３に無理な力が加わらず、また被保
護機器の振動によって締付ネジ部に弛みを生ずることも
ない。As described above, this invention takes into consideration the variations in the height of the mounting shoulder 3 of the safety device main body 1 and the variations in the mounting position of the mounting arm 10, and eliminates the variation between the mounting arm and its shoulder. By providing a gap A of There is no possibility of loosening of the tightening screw part due to vibration.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は熱動形安全器の外観斜視図、第２図はこの安全
器の従来の取付手段を示す要部断面図、第３図はこの考
案の実施例を示す同様の要部断面図である。 なお図中１は安全器本体、３はその取付肩部、５は被保
護機器、６はこの機器に固定した端子箱、１０は弾性取
付腕、Ａはこの腕１０と肩部３との間に形成した隙間を
示す。 その他各図中同−符号は同一または相当部分を示すもの
とする。Fig. 1 is a perspective view of the appearance of a thermal safety device, Fig. 2 is a sectional view of a main part showing a conventional mounting means for this safety device, and Fig. 3 is a sectional view of a similar main part showing an embodiment of this device. It is. In the figure, 1 is the main body of the safety device, 3 is the mounting shoulder, 5 is the device to be protected, 6 is the terminal box fixed to this device, 10 is the elastic mounting arm, and A is the space between this arm 10 and the shoulder 3. This shows the gap formed in the figure. In other figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 被保護機器５上に感熱面１２を接するように端子箱６内
に支持された安全器本体１の取付肩部３と、この取付肩
部３の下側に位置するように上記端子箱６に設けられた
弾性取付腕１０との間に、上記本体ならびに取付腕の工
作寸法のバラツキを消去するための隙間Ａを予め設定さ
せたことを特徴とする熱動形安全装置の取付装置。The mounting shoulder 3 of the safety device main body 1 is supported within the terminal box 6 so that the heat-sensitive surface 12 is in contact with the protected device 5, and the terminal box 6 is located below the mounting shoulder 3. A mounting device for a thermal safety device characterized in that a gap A is preset between the provided elastic mounting arm 10 and a gap A for eliminating variations in the working dimensions of the main body and the mounting arm.