Flow path switching valve and manufacturing method thereof
A flow path switching and flow path technology, which is applied to valve details, valve devices, valve casing structures, etc., can solve problems such as limiting the degree of freedom of the valve casing, and achieve the effect of improving the degree of freedom
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no. 1 approach
[0042] Below, refer to Figure 1 to Figure 4 , the structure of the flow-path switching valve according to the first embodiment of the present invention will be described.
[0043] figure 1 It is a front view of the flow-path switching valve concerning 1st Embodiment of this invention. figure 2 (a) is along the figure 1 The axial sectional view (longitudinal sectional view) of the valve shaft of the flow path switching valve, figure 2 (b) is the figure 2 (a) is an enlarged view of the portion surrounded by a dashed-dotted line. image 3 is included figure 1 A partial cross-sectional perspective view of the flow path switching valve. Figure 4 is included figure 1 An exploded perspective view of a partial cross-section of the flow path switching valve. In addition, in this specification, "up-down, left-right" is used to show the relative positional relationship of each member in each figure, and does not show an absolute positional relationship.
[0044] like Figu...
no. 2 approach
[0076] Below, refer to Figure 8 to Figure 10 A flow path switching valve according to a second embodiment of the present invention will be described.
[0077] The flow-path switching valve 2 of the second embodiment includes, in place of the valve shaft 50, a valve shaft 50A in which the stopper 53 is not provided in the flow-path switching valve 1 of the first embodiment described above. Regarding other structures, the flow-path switching valve 2 has the same structure as the flow-path switching valve 1 . About the flow-path switching valve 2, the same code|symbol is attached|subjected to the same structure as the above-mentioned flow-path switching valve 1, and description is abbreviate|omitted.
[0078] Figure 8 to Figure 10 It is a cross-sectional view illustrating a method of manufacturing a flow-path switching valve according to a second embodiment of the present invention, and sequentially shows a state in which the valve shaft 50A is inserted into the spherical val...
no. 3 approach
[0092] Below, refer to Figure 11 to Figure 14 , a flow-path switching valve according to a third embodiment of the present invention will be described.
[0093] The flow path switching valve 3 of the third embodiment has a structure for welding the lower case 43 and the valve body 10 by infrared welding instead of ultrasonic welding in the flow path switching valve 2 of the second embodiment described above. About the flow-path switching valve 3, the same code|symbol is attached|subjected to the same structure as the above-mentioned flow-path switching valve 1, 2, and a description is abbreviate|omitted.
[0094] Figure 11 to Figure 14 It is sectional drawing explaining the manufacturing method of the flow-path switching valve concerning 3rd Embodiment of this invention. Figure 11 to Figure 14 The state in which the valve shaft 50A is inserted into the bearing portion 45 of the drive unit housing 42, the state where the valve body 10 and the drive unit housing 42 are irra...
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