JPH01105359U - - Google Patents
Info
- Publication number
- JPH01105359U JPH01105359U JP19831487U JP19831487U JPH01105359U JP H01105359 U JPH01105359 U JP H01105359U JP 19831487 U JP19831487 U JP 19831487U JP 19831487 U JP19831487 U JP 19831487U JP H01105359 U JPH01105359 U JP H01105359U
- Authority
- JP
- Japan
- Prior art keywords
- brush
- motor
- pigtail
- spring
- commutator
- 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
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims 2
- 238000013021 overheating Methods 0.000 claims 1
- 230000004913 activation Effects 0.000 description 1
Description
第１図は本考案に係るモータの保護装置の正面
図、第２図は本考案に係るモータの保護装置の作
動后の状態を示す正面図、第３図は本考案に係る
直流モータの軸直角要部断面図、第４図は本考案
に係る直流モータの軸平行要部断面図（第３図の
Ｘ―Ｘ断面）。
３……整流子、５……ブラシ、６……ブラシホ
ルダ、７……ブラシばね、９……ピグテール、１
１，１２……端子、１４……引張ばね。
Figure 1 is a front view of the motor protection device according to the present invention, Figure 2 is a front view showing the state of the motor protection device according to the present invention after activation, and Figure 3 is the shaft of the DC motor according to the present invention. 4 is a sectional view of the main part at right angles, and FIG. 4 is a sectional view of the main part parallel to the axis of the DC motor according to the present invention (X--X cross section in FIG. 3). 3... Commutator, 5... Brush, 6... Brush holder, 7... Brush spring, 9... Pigtail, 1
1, 12... terminal, 14... tension spring.
Claims (1)
ブラシが、ブラシホルダ内に滑動自在に抱持され
、且つブラシばねで整流子に接触させて整流する
直流モータにおいて、前記ブラシばねを形状記憶
合金で形成すると共に、前記ピグテールと前記ブ
ラシホルダの端部との間に引張ばねを配設し、モ
ータの過熱により形状記憶合金が縮長した状態で
、前記引張ばねが、前記ピグテールを介して前記
ブラシを前記整流子から離間させ、電流を遮断さ
せるようにした事を特徴とする直流モータにおけ
る過熱保護装置。 In a DC motor in which a brush connected to a power supply terminal via a pigtail is slidably held in a brush holder and commutated by contacting a commutator with a brush spring, the brush spring is made of a shape memory alloy. and a tension spring is disposed between the pigtail and the end of the brush holder, and when the shape memory alloy is contracted due to overheating of the motor, the tension spring is applied to the brush through the pigtail. An overheat protection device for a DC motor, characterized in that the motor is separated from the commutator to cut off current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19831487U JPH01105359U (en) | 1987-12-26 | 1987-12-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19831487U JPH01105359U (en) | 1987-12-26 | 1987-12-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01105359U true JPH01105359U (en) | 1989-07-17 |
Family
ID=31488832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19831487U Pending JPH01105359U (en) | 1987-12-26 | 1987-12-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01105359U (en) |
-
1987
- 1987-12-26 JP JP19831487U patent/JPH01105359U/ja active Pending
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