JPS59119921U

JPS59119921U - Engine cooling thermostat

Info

Publication number: JPS59119921U
Application number: JP1358983U
Authority: JP
Inventors: 宰若　修一; 堀　準一
Original assignee: 日野自動車株式会社
Priority date: 1983-01-31
Filing date: 1983-01-31
Publication date: 1984-08-13

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

図面は本考案の実施例に係り、第１図はエンジン冷却用
サーモスタットの弁体の閉弁状態における縦断面図１．
第２図は第１図の■−■矢視側面図、第３図はエンジン
冷却用サーモスタットの弁体の開弁状態における縦断面
図、第４図は記憶形態への復元温度の異なる２種類の形
状記憶合金からなる弁体駆動部材の二次永久変形加工形
態を示す斜視図、第５図は弁体駆動部材の一方が変形前
の記憶形態に復元し他方がまだ復元していない状態を示
す斜視図、第６図は弁体駆動部材の全部が変形前の記憶
形態に復元した状態を示す斜視図である。１はエンジン冷却用サーモスタット、２はエンジンの冷
却水の流路である第１の流路、３は同じく第２の流路、
５は外側ケース、６は内側ケース、７は弁体、９は弁体
駆動部材、１５はエンジンの゛冷却水の流路であるバイ
パス、Ｍは形状記憶合金である。第１図第３図The drawings relate to an embodiment of the present invention, and FIG. 1 is a longitudinal cross-sectional view of a valve body of an engine cooling thermostat in a closed state.
Figure 2 is a side view taken from the ■-■ arrow in Figure 1, Figure 3 is a longitudinal cross-sectional view of the valve body of the engine cooling thermostat in the open state, and Figure 4 is two types with different temperatures for restoring to the memory form. FIG. 5 is a perspective view showing a form of secondary permanent deformation of a valve body drive member made of a shape memory alloy; FIG. FIG. 6 is a perspective view showing a state in which the entire valve body driving member has been restored to the memory form before deformation. 1 is an engine cooling thermostat, 2 is a first flow path which is a flow path for engine cooling water, 3 is a second flow path,
5 is an outer case, 6 is an inner case, 7 is a valve body, 9 is a valve body driving member, 15 is a bypass which is a flow path for engine cooling water, and M is a shape memory alloy. Figure 1 Figure 3

Claims

[Scope of utility model registration request]

The outer case is configured to switch the flow path of the engine cooling water by sensing the temperature of the coolant, and is fixed to a part of the coolant passage, the inner case is fixed to the outer case, and the outer case is fixed to the outer case. a valve body that contacts and leaves the case to switch the flow path of the cooling water; a return spring that constantly presses the valve body against the outer case; and a return spring that constantly presses the valve body against the outer case; a valve body drive member configured to sense and displace against the return spring, the valve body drive member being comprised of a shape memory alloy, the shape memory alloy being in a shortened state; The case where the valve body is crimped to the outer case is referred to as a secondary permanent deformation processing form, and the case where the valve body is in an extended state and is separated from the outer case against the return spring is referred to as a storage form before deformation. An engine cooling thermostat characterized by: