Eagle Industry Co., Ltd.

Kyocera Corporation

Nok Corporation

Hideyuki Inoue

Takeshi Hosoe

Yuichiro Tokunaga

Yuta Negishi

Wataru Kimura

Tetsuya Iguchi

Masatoshi Itadani

Keiichi Chiba

Tadatsugu Imura

Hidetoshi Kasahara

Yuki Maetani

Kenji Kiryu

Ayano Tanishima

Hiroshi Kubota

Akira Yoshino

Hikaru Katori

Ryoma Yamakawa

Kazumasa Sunagawa

Jun Hiromatsu

Yasuhiro Kuroki

Ryu Kikuchi

Yuuichiro Tokunaga

Hiroki Inoue

Hiroyuki Hashimoto

Takafumi Ota

Sayaka Kosugi

Masaru Nakamura

Toru Kono

Yoshihiro Teshima

Takuji Matsuki

Masatoshi Seki

Hiroshi Aoike

Takuya Matsumoto

Haruhiro Osada

Hiroki Takeno

Kazumasa Sungawa

Daisuke Morimiya

Wataru Kiura

A head-up display includes a display device and an optical system. The display device includes a display panel, an input unit, a memory, and a controller. The display panel is configured to display an image. The input unit is configured to receive calibration information indicating a position of a calibration object and first position information indicating positions of user's eyes based on an image capturing device. The memory is configured to store the calibration information. The optical system is configured to allow a user to visually recognize a virtual image plane, which is a virtual image of the image displayed on the display panel, by reflecting image light emitted corresponding to the image toward the user's eyes. The controller is configured to convert the first position information into second position information indicating the positions of the eyes based on the virtual image plane by using the calibration information.

Head-up display, head-up display system, and mobile body

A pair of sliding components have sliding faces (S) that slide with respect to each other, wherein at least one of the sliding faces (S) includes at least one dimple group () constituted by plural dimples (), and each dimple group () includes at least one opening portion () that is arranged in the one of the sliding faces (S) and radially open to the outside the one of the sliding faces (S). In the sliding components, a dynamic pressure generation mechanism can easily be formed, and a lubricating performance and a sealing performance can improve.

Sliding component

Low-torque sliding components have sliding surfaces rotated relative to each other with an annular mating ring and an annular seal ring facing each other. The sliding surface of at least one of the mating ring and the seal ring has therein a plurality of multi-stepped recess portions formed in a circumferential direction. Relative rotation and sliding of the mating ring and the seal ring causes the multi-stepped recess portions to generate a dynamic pressure, and the multi-stepped recess portion is formed in a stepwise shape in a cross-sectional view by a dynamic pressure recess portion and a static pressure recess portion with the dynamic pressure recess portion surrounding the static pressure recess portion deeper than the dynamic pressure recess portion.

Sliding components

In an exemplary embodiment, a seal device () that seals between a housing () and a rotation shaft () passing through the housing () includes: a floating ring () arranged with a gap h with respect to the rotation shaft (), a seal portion () formed by bringing one end face of the floating ring () into contact with the housing (), and a space portion j provided between the floating ring () and the housing (), and the floating ring () includes bias means that contactlessly biases the floating ring () to the seal portion via the space portion j. The seal device in which the floating ring follows movement of the rotation shaft is capable of exerting a sealing operation so that vibration of the rotation shaft can be reduced.

Seal device

In an exemplary embodiment, a pair of sliding components has sliding surfaces that slide with respect to each other, wherein at least one of the sliding surfaces, sliding surface S, includes a random dimple groupin which plural dimplesare randomly arranged, and the random dimple groupis arranged to be biased in the circumferential direction of the sliding surface S. The sliding components have an improved lubricating property and reliability of a sealing property.

In a pair of sliding components having respective sliding faces (S) which slide relative to each other, at least one of the sliding faces (S) is provided with a plurality of dimples (), and the dimples () include a concave part (), and a peripheral edge part () which is located at the outer peripheral part of the concave part () and is shallower than the concave part (). Accordingly, the performance of the plurality of dimples formed on the sliding face can be sufficiently exploited, thereby improving their lubrication performance and sealing performance.

Sliding member

In an exemplary embodiment, a pair of sliding components has sliding surfaces that slide with respect to each other, wherein at least the sliding surface S on one side includes a random dimple groupin which plural dimplesare randomly arranged, and at least one land portionthat partitions radial portionsof the random dimple group. According to the configurations, a lubricating effect and a sealing effect can be improved.

In an exemplary embodiment of a sliding component, a sliding face S is provided with a first fluid-side negative pressure generation mechanismincluding a first negative pressure generation groove, and is provided with a second fluid-side negative pressure generation mechanismincluding second negative pressure generation grooveslocated on the second-fluid side of the first fluid-side negative pressure generation mechanism, and is further provided with a dynamic pressure generation mechanismincluding dynamic pressure generation grooveson at least one of the first-fluid side and the second-fluid side of the first fluid-side negative pressure generation mechanismand the second fluid-side negative pressure generation mechanism, and the first negative pressure generation grooveis isolated from the second-fluid side by a land R, and the second negative pressure generation groovesare isolated from the first-fluid side by a land R.

In an exemplary embodiment, a sliding component includes a pair of sliding parts sliding relatively to each other. One sliding part is a stationary-side seal ring, and the other sliding part is a rotating-side seal ring, wherein the seal rings have sliding faces S formed radially for sealing a liquid or a misty fluid as a sealed fluid against leakage. At least one of the sliding faces S is provided with: spiral grooveswhich have upstream endsconnected to a leakage side, and downstream endsnot connected to a circumferential edge on a sealed-fluid side, and are disposed at an angle from upstream to downstream; and discharge groovesdisposed at an angle such that their upstream endsare located on the leakage side and their downstream endsare located on the sealed-fluid side.

A sealing device includes a floating ring in a space between the outer circumference of a rotating shaft and the inner circumference of a housing, and a multi-layered cylindrical body including a plurality of elastically deformable cylindrical thin plates layered on top of each other provided between an outer peripheral surface of the floating ring and an inner peripheral surface of the housing, so as to impart a radial restoring force against the eccentricity of the rotating shaft to restore it to its center position, and a tangential damping force to reduce the whirling of the rotating shaft.

In an exemplary embodiment, a seal devicethat seals between a housingand a rotation shaftpassing through the housingincludes a floating ringarranged with a gap h with respect to the rotation shaft, wherein the floating ringincludes at least one supporting meansthat supports in the circumferential direction. In the seal device, the floating ring follows movement of the rotation shaft even upon running for a long time, a clearance between the rotation shaft and the seal ring can be properly held, and the sealing operation by the floating ring and the vibration damping function can be exerted, and the seal device is easily assembled.

In an exemplary embodiment, a sliding component includes a pair of sliding partsandsliding relative to each other, with a high-pressure gas present on one side of the pair of sliding partsandand a low-pressure liquid on the other side. At least the sliding parthas a sliding face S provided with positive pressure generation mechanismseach having a positive pressure generation groove, and provided with an annular deep grooveon the high-pressure gas side. The annular deep grooveis isolated from the high-pressure gas side by a land R, and is connected to the low-pressure liquid side through radial deep grooves. The sliding component is capable of fulfilling both conflicting conditions of sealing and lubrication, with a gas on the high-pressure fluid side and a liquid on the low-pressure fluid side.

In an exemplary embodiment, a pair of sliding components has annular sliding surfaces that slide with respect to each other in which plural dimplesare arranged on at least sliding surface S on one side, wherein the plural dimplesare randomly arranged to form a random dimple group, and the dimplesare arranged in a manner that a radial-direction coordinate average of centers of the dimplesof the random dimple groupis smaller than a sliding radiusof the sliding surface S.

A pair of sliding parts has sliding faces S that slide with respect to each other in which at least the sliding face S on one side includes dimple groupsformed by arranging plural dimples, and the dimplesare arranged in such a manner that a radial-direction coordinate average of center coordinates of the dimplesof the dimple groupis smaller than a sliding radius Rm of the sliding face S. The sliding parts can improve a characteristic of suctioning from the leakage side to sliding faces, thereby providing excellent sealing property.

Growing community of inventors

Tokyo, Japan

Hideyuki Inoue