Sealing ring installing fixture
A technology for installing fixtures and sealing rings, which can be used in hand-held tools, manufacturing tools, metal processing, etc.
Inactive Publication Date: 2013-10-23
NOK CORP
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Problems solved by technology
Moreover, in order to insert the seal ring into the inner peripheral space of the case 100, it is necessary to deform the seal ring to be smaller than the inner diameter of the case 100, but if it is deformed extremely, deformation marks remain on the seal ring after installation, Causes deterioration of sealing performance, and in extreme cases, the seal ring may be damaged
[0004] In addition, when the seal ring mounting groove 101 and the pressure port groove 102 etc. are alternately formed on the inner peripheral surface of the case 100, the seal ring may be stuck on the inner peripheral surface formed by these grooves during installation. Difficult installation due to interference of multiple steps or uneven surfaces
Method used
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[0049] Hereinafter, preferred embodiments of the seal ring mounting jig according to the present invention will be described with reference to the drawings.
[0050] first, figure 1 A case 200 to which a seal ring is mounted using a seal ring mounting jig according to the present invention is shown. The housing 200 is used, for example, in a rotary joint and has a cylindrical shape. A plurality of seal ring mounting grooves 202 are formed on the inner peripheral surface 201 , and an annular seal ring 300 is mounted in each seal ring mounting groove 202 . In addition, the seal ring 300 is made of, for example, a flexible synthetic resin material or a rubber-like elastic material (rubber material or a rubber-like elastic synthetic resin material), and for example, a U packing, a V packing, an O ring, and a D ring are suitable. (A seal ring with a roughly D-shaped cross section), an X ring (a seal ring with a roughly X-shaped cross section).
[0051] Figure 2 to Figure 7 The...
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The present invention provides a fixture capable of easily installing a sealing ring (300) into a sealing ring installing groove (202) formed on an internal peripheral surface (201) of a barrel-shaped housing (200). The fixture comprises: a fixture main body (1), wherein the diameter of the fixture main body is appropriately smaller than an inner diameter of the housing (200) provided with the sealing ring installing groove (202), a peripheral surface (1a) is provided with a sealing ring maintaining groove (11) extending along a peripheral direction, and is simultaneously provided with a hollow part (12), the sealing ring maintaining groove (11) is interrupted by a part of the hollow part in the peripheral direction; and a pressing member (2) which can be plugged into the hollow part (12) in a pluggable way, wherein a part (300a) of the sealing ring (300) externally plugged to the fixture main body (1) along the sealing ring maintaining groove (11) deforms towards the hollow part (12), so that the sealing ring (300) is embedded into the sealing ring maintaining groove (11).
Description
technical field [0001] The present invention relates to a jig used for mounting a seal ring in a seal ring mounting groove formed on an inner peripheral surface of a casing. Background technique [0002] As a jig for attaching a seal ring to a seal ring attachment groove formed on the inner peripheral surface of the case, a jig like Patent Document 1 is conventionally known. However, in such a fixture, such as Figure 12 Like the housing 100 of the rotary joint shown, a plurality of seal ring mounting grooves 101 are formed on the inner peripheral surface, and it is not easy to mount the seal rings in the respective seal ring mounting grooves 101 . [0003] Also, when installing the seal rings into the seal ring installation grooves 101 by hand, if the inner diameter of the case 100 is small, hands cannot enter the inside, making the installation difficult or impossible. Furthermore, in order to insert the seal ring into the inner peripheral space of the housing 100, it is ...
Claims
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IPC IPC(8): B25B27/28
CPCB23P19/084
Inventor 前田敏行
Owner NOK CORP