Anti-disassemble cover and fuel pressure sensor unit comprising the same
A fuel pressure, anti-disassembly technology, applied in liquid fuel feeders, mechanical equipment, charging systems, etc., can solve the problems of poor fuel consumption, inability to ensure tightness, and reduced emissions, and prevent disassembly and tightening. effect of parts
Inactive Publication Date: 2015-04-01
HONDA MOTOR CO LTD
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Problems solved by technology
In the case where the fastening member is a fuel sensor having such a mounting structure, even if the fastening member is loosened only once after installation, even if the fastening member is tightened again, the sealing performance cannot be ensured, resulting in fuel leakage, Emission reduction and fuel consumption rate deterioration due to poor controllability
Method used
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Embodiment Construction
[0044] Next, embodiments of the tamper-resistant cap 20 and the fuel pressure sensor unit 8 according to the present invention will be described in detail with reference to the drawings.
[0045] Such as figure 1 As shown, a fuel supply device 1 is attached to an in-line four-cylinder gasoline engine (abbreviated as engine E hereinafter) with four intake passages 2 . The fuel supply device 1 is composed of the following components: a high-pressure fuel pump 3; a fuel supply pipe 4, which is connected to the high-pressure fuel pump 3; an output pipe 6, whose one end 6a is connected to the downstream end of the fuel supply pipe 4 via a connector 5, Moreover, the inner diameter of the output pipe 6 is larger than that of the fuel supply pipe 4, and the output pipe 6 extends linearly along the cylinder arrangement direction of the engine E; and the fuel pressure sensor unit 8, which is provided at the other end 6b of the output pipe 6.
[0046] Such as figure 2 As shown, the f...
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The present invention provides an anti-disassemble cover and a fuel pressure sensor unit comprising the same. The anti-disassemble cover can prevent users from disassembling fastening parts reliably, and the fuel pressure sensor unit (10) comprises an outer screw thread part (11) used for being in screw joint with an output pipe (6) and a head part (12) which is integrally molded with the outer screw thread part and of which the peripheral surface is equipped with a tool clamping surface. The anti-disassemble cover used for the fuel pressure sensor unit comprises a cylindrical cover main body part (21) which covers the peripheral surface of the head part, a plurality of first protruding sheets (22)and a clamping claw(23). Each protruding sheet comprises a base end (22a) and a free end (22b), the base end is protruded from the inner surface of the cover main body part (21), and the free end is separated from the inner surface via a clearance and is extended toward the output pipe side of the cover main body part. The clamping claw is protruded at the free ends of the first protruding sheets toward the radial inner side of the cover main body part, and is clamped with the head part.
Description
technical field [0001] The present invention relates to a disassembly preventing cover for fastening parts and a fuel pressure sensor unit provided with the disassembly preventing cover, wherein the outer peripheral surface of the disassembly preventing cover has a head for forming a tool engaging surface, and the disassembly preventing cover is attached to The part to be fastened. Background technique [0002] As various components mounted on an internal combustion engine, there are components that are formed with a screwing portion for screw fastening and that are fastened to a predetermined fastened position (fastened portion) by applying a rotational torque with a tool . Among such components, there are some that are inconvenient to be disassembled or rotated by the user. [0003] For example, a distributor for adjusting the ignition timing of the internal combustion engine is rotatably attached to the internal combustion engine by fastening members such as nuts or bol...
Claims
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IPC IPC(8): F16B41/00F02M37/00
Inventor 楢本和昭石木和也
Owner HONDA MOTOR CO LTD