The invention provides a mechanism not limited to the relative displacement of the shell and shaft in the axial direction, but also a buffer brake for a mechanism in which the shell and shaft are relatively displaced in the axial direction and the shell and shaft are relatively rotating. To achieve this purpose, the buffer brake is mounted in a space between an end face arranged on the side of the housing and an end face arranged on the side of the shaft which is axially displaced and rotated relative to the housing, having: a metal fitting, which is maintained on either side of the end face; an elastomer, which is connected to a metal fitting; and a sliding member, which is connected to the housing. The sliding member can contact and separate the end face of the other side, and when the shaft rotates when the sliding member contacts the end face of the other side, the sliding member can slide and rotate relative to the end face of the other side. The sliding member is made of resin parts.
【技术实现步骤摘要】
【国外来华专利技术】缓冲制动器
本专利技术涉及一种兼具缓冲功能和制动功能的缓冲制动器。本专利技术的缓冲制动器例如在汽车设备领域中被装入转向装置等,或被用于工业设备领域等。
技术介绍
迄今为止,已知有图2所示的缓冲制动器51,该缓冲制动器51安装在设置于外壳61侧的端面部63和设置于轴71侧的端面部73之间的空间部,且由保持在轴71侧的端面部73的金属配件52和与该金属配件52连接的弹性体53组合形成。轴71相对于外壳61在轴向上发生相对位移。弹性体53可接触分离地接触外壳61侧的端面部63。在图2所示的状态下,当轴71在两个端面部63、73之间的间隔变窄的方向上相对于外壳61在轴向上发生相对位移时,弹性体53被压缩,并且伴随压缩变形发挥缓冲功能。弹性体53的压缩变形达到极限时,停止发生位移,发挥制动功能。现有技术文献专利文献专利文献1:特许第4255832号公报然而,在具有上述结构的缓冲制动器51中,当弹性体53被压缩变形时,存在该弹性体53被夹在外壳61和金属配件52之间的间隙c中而损坏的可能。为了防止弹性体53被夹住而导致损坏,在如图3所示的参考例中,想到在弹性体53的前端侧也连接金属配件54,使弹性体53在一对金属配件52、54之间压缩变形。但是,在该图3的例子中,缓冲制动器51被固定在外壳61侧,当轴71发生位移时,轴71侧的端面部73与金属配件54碰撞。然而,金属配件54在其材质上为高摩擦性,相对于轴71侧的端面部73,难以平滑地滑动。因此,将图3中的缓冲制动器51用于外壳61和轴71相对旋转的机构时,由于金属配件54不平滑地滑动,所以弹性体53发生扭曲,且由于该扭 ...
【技术保护点】
1.一种缓冲制动器,安装在外壳侧设置的端面部和相对于所述外壳发生轴向位移且旋转的轴侧设置的端面部之间的空间部,其特征在于,具有:金属配件,保持在任一侧的所述端面部;弹性体,连接到所述金属配件;以及滑动构件,连接到所述弹性体,所述滑动构件能够接触分离地接触另一侧的所述端面部,同时当所述轴在该滑动构件接触另一侧的所述端面部的状态下旋转时,所述滑动构件相对于另一侧的所述端面部能够滑动旋转。
【技术特征摘要】
【国外来华专利技术】2016.03.11 JP 2016-0478121.一种缓冲制动器,安装在外壳侧设置的端面部和相对于所述外壳发生轴向位移且旋转的轴侧设置的端面部之间的空间部,其特征在于,具有:金属配件,保持在任一侧的所述端面部;弹性体,连接到所述...
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