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Valve core

A technology of valve core and sealing parts, which is applied in the field of valve cores and can solve problems such as the inability to prevent sealing parts from detaching

Inactive Publication Date: 2004-03-24
PACIFIC INDUSTRIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, in the valve element used in the part filled with high-pressure gas such as refrigerant for air conditioning, since the sealing member is pressed against and adhered to the other part due to the large internal pressure, in the conventional valve element structure, Does not prevent detachment of sealing parts

Method used

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  • Valve core
  • Valve core
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The following is based on Figure 1 ~ Figure 4 , Embodiment 1 of the present invention will be described. figure 1 The symbol 50 in is the nozzle used to fill the refrigerant in the car air conditioner. The nozzle 50 is provided with a male thread portion 51 at its base end, and by coupling the male thread portion 51 with the screw of the air-conditioning component, the core mounting hole 52 in the nozzle 50 is connected to the refrigerant flow path 60 provided in the air-conditioning component. connect. In this way, the refrigerant can be filled into the refrigerant flow path 60 from the filling hole 53 opened at the tip of the nozzle 50 through the core attachment hole 52 .

[0031] In the middle part of the core mounting hole 52, a seal sliding joint 54 smaller than the entire inner diameter is formed, and on the rear side and the front side of the seal slide joint 54, there are respectively formed holes that expand in diameter as they leave the seal slide joint 5...

Embodiment 2

[0047] The spool 40 of the present embodiment, as Figure 5 As shown, compared with the first embodiment, only the structures of the first flange and the sealing member are different. Hereinafter, only the parts different from those in Embodiment 1 will be described, and the parts with the same structure as in Embodiment 1 will be described in Figure 5 The same symbols are given in , and their repeated explanations are omitted.

[0048] The first flange 22 provided on the movable shaft 20 of the spool 40 of this embodiment has a cylindrical outer cylinder wall 42 protruding from the outer edge portion toward the seal member 45 . In other words, on the first flange 22 , the inner edge thereof is sunken, and an annular recess 43 is formed. On the other hand, an inner cylindrical convex portion 44 is formed from the sealing member 45 in a concavo-convex manner combined with the concave portion 43 of the first flange 22 . Such a structure can also achieve the same action and e...

Embodiment 3

[0050] The spool 70 of the present embodiment is as Image 6 shown.

[0051] On the core body 71 provided in the valve core 70, a small-diameter portion 72 is formed on the inner side of the tip portion, and the portion at the tip of the small-diameter portion 72 corresponds to the “opening inner edge portion of the core body” in the present invention. Here, the inner conical surface 73 in the present invention is formed.

[0052] Inside the core body 71, a conical compression coil spring 74 is housed. The large-diameter side of the compression coil spring 74 is in contact with the end of the small-diameter portion 72, and on the other hand, the small-diameter side is in contact with the end of the movable shaft 75. The protrusions 76 formed in the middle portion are in contact.

[0053] An outer conical surface 78 of the present invention corresponding to the inner conical surface 73 is formed on the outer peripheral surface of the first flange 77 integrally formed at one e...

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PUM

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Abstract

The seal member 30 is held between first and second flanges 22 and 24 in the valve core 10, and a locking projection 26 is connected in a combination of a recessed portion and a projected portion between the first and second flanges 22 and 24 and the seal member 30 while the locking projection 26 is caught by the seal member 30. Thus, deformation of the seal member 30 in diameter is controlled. The seal member 30 is moved to the first and second flanges 22 and 24 side in a fixed state when the valve core 10 is opened even though the seal member 30 is stuck on an inner periphery of a core mounting hole 52. Thus, separation of the seal member 30 is prevented.

Description

technical field [0001] The present invention relates to a valve core, in particular to a valve core that is closely bonded to a sealing member at the opening inner edge of a core body or the inner peripheral surface of a core installation hole where the core body is installed, and simultaneously closes the core installation hole. Background technique [0002] Conventionally, as such a spool, there is the well-known JIS D4211 "Tyre spool for automobiles". The structure of the spool is that a movable shaft that can move linearly passes through the cylindrical core body fixed on the core installation hole, and is clamped between a pair of flanges that are arranged at one end of the movable shaft. The holding sealing part is closely combined with the inner edge of the opening of the core body, and closes the core installation hole. [0003] However, in the conventional spool described above, the sealing member sandwiched between the pair of flanges may come off from between the...

Claims

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Application Information

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IPC IPC(8): B60S5/04F16K1/36F16K1/46
CPCF16K1/46
Inventor 山本雅彦
Owner PACIFIC INDUSTRIAL CO LTD