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Seal member

A technology of sealing parts and sealing parts, which is applied in the direction of engine sealing, engine sealing devices, engine components, etc., can solve the problems of increased weight and installation procedures, damage to sealing functions, and increased number of parts, so as to ensure strength and prevent Deformation, reliable sealing effect

Inactive Publication Date: 2013-06-19
ROKI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, according to the mounting method of the sealing member described in Patent Document 1, since the supporting member of the sealing member is fastened and fixed by bolts or the like, there is a problem that the number of parts increases, the weight and the number of steps for mounting also increase, and it is very difficult to attach and detach the sealing member.
[0011] In addition, according to the mounting method of the seal member described in Patent Document 2, since the seal member and the cylinder head cover are assembled by concave-convex engagement, there is a problem that displacement may occur due to thermal deformation, vibration, wear, etc., and the sealing function may be impaired.

Method used

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Experimental program
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Effect test

no. 1 approach ］

[0057] figure 1 is a cross-sectional view showing the mounted state of the sealing member of the first embodiment, figure 2 It is an exploded cross-sectional view showing the mounting state of the sealing member of the first embodiment, image 3 is a perspective view showing the sealing member of the first embodiment, Figure 4 yes figure 1 Enlarged view of part A.

[0058] Such as figure 1 and figure 2 As shown, the sealing member 10 of this embodiment is formed annularly, and is inserted into the mounting hole 21 formed in the cylinder head cover 20 of the internal combustion engine along the insertion direction F, and the peripheral wall 22 of the mounting hole 21 is fitted into the cylindrical member fixed to the internal combustion engine. Between 30.

[0059] Such as image 3 As shown, the seal member 10 has a shaft seal portion 11 formed at one axial end thereof, and a radial seal portion 12 formed at the other end side. The shaft seal portion 11 is formed to ...

no. 2 approach ］

[0071] Figure 5 It is a sectional view of the sealing member of the second embodiment. In addition, the same code|symbol is attached|subjected to the same or similar member as the said 1st Embodiment, and the detailed description is abbreviate|omitted.

[0072] Such as Figure 5 As shown, the sealing member 10' of this embodiment is formed in an annular shape, and is inserted into the mounting hole 21 formed in the cylinder head cover 20 of the internal combustion engine, and is fitted between the peripheral wall 22 of the mounting hole 21 and the cylindrical member 30 fixed to the internal combustion engine. between.

[0073] In addition, like the seal member 10 of the first embodiment described above, the seal member 10' has a shaft seal portion 11 formed at one end in the axial direction, and a radial seal portion 12 formed at the other end side. The shaft seal portion 11 is formed to protrude in the axial direction from the axial end portion of the seal member 10', and...

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Abstract

A seal member has a ring shape which is assembled in a portion between a tubular member to be inserted into and fixed to a mount hole formed to a head cover of an internal combustion engine and a peripheral wall portion of the mount hole. The seal member is provided with an axial-direction seal portion formed to axial one end portion of the seal member, and a diameter-direction seal portion formed to another one end of the seal member. A fixing member configured to fix movement in a diameter direction of the seal member between the axial-direction seal portion and the diameter-direction thereof is formed along a peripheral wall portion of the mount hole.

Description

technical field [0001] The present invention relates to a seal member, and more particularly to a structure of a seal member interposed between a spark plug mounting hole formed in a cylinder head cover of an internal combustion engine and a mounting member through which the spark plug is inserted. Background technique [0002] Conventionally, a head cover made of synthetic resin is attached to an upper portion of an internal combustion engine in order to reduce weight and improve design. A spark plug is attached to the upper part of the internal combustion engine. The spark plug is inserted into a mounting member such as a cylindrical plug tube, and the plug tube is inserted into a plug mounting hole formed in the cylinder head cover. [0003] A sealing member is interposed between the spark plug tube and the spark plug mounting hole in order to liquid-tightly seal the gap between the spark plug mounting hole and the spark plug tube, and various structures are known for its...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F11/00
CPCF16J15/3212F16J15/3268F16J15/3276F02F11/00
Inventor 佐藤泰辅铃木兵升
Owner ROKI CO LTD