JPS6049347U - Automatic/manual switching device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the locking mechanism of the present invention connected to an operating yoke, and FIGS. 2 and 3 are cross-sectional views of the locking mechanism of FIG. 1, each showing different operating states. 12: Rotating operation screw shaft, 14: Frame assembly, 16
．． 18: nut half body, 21: spring biased actuator assembly, 24: operating yoke, 32° 34: frame plate, 3
6: Outer wall member, 38: Fixing screw, 41: Bolt, 42:
Compression spring, 44: cam member, 46: operating rod, 51:
Short axis, 52: Long axis.

Claims (8)

[Scope of utility model registration request] (1) A locking mechanism capable of selectively engaging a threaded material shaft, comprising: a frame; and a first nut half fixed to the frame to move with the frame on one side of the shaft; a second nut half disposed on the opposite side of the shaft in alignment with the nut half and movable relative to the frame; and a second position in which the nut is disengaged from the shaft, the cam means being interposed between the second nut half and a portion of the frame. a cam member having a dimension corresponding to the spacing between the frame portion and the second nut half when both nut halves are in the first position; 1 dimension part and both nut halves are the second
A locking mechanism comprising a second dimension having a dimension corresponding to the spacing between the portion of the frame and the second nut half when in position. (2) the cam member has a roughly elliptical cross section, and the first dimension portion is defined by the short diameter portion of the ellipse;
The locking mechanism according to claim 1, wherein the second dimension portion is defined by the major axis of the ellipse. (3) coupled to the cam member to move the cam member between a first position corresponding to the first position of the nut half and a second position corresponding to the second position of the nut half; The locking mechanism according to claim 2, wherein the locking mechanism is provided with an operating means that can be operated by hand. (4) Spring means is provided between the frame and the second nut half and acts to bias both nut halves to the second position. The locking mechanism described in item 1. (5) The frame includes a first frame plate, a second frame plate, and an outer wall member provided between the two frame plates and attached to one end of both frame plates, and the first nut half is received between the frame plates and attached to the other end of the frame plates, a second nut half is slidably received between the frame plates, and the cam member is mounted on the other end of the frame plates. A member having an elliptical cross section received between the outer wall member and the second nut half, the member being rotatable about an axis parallel to the axis of the nut half. The locking mechanism described in item 1. (6) The scope of the utility model registration claim, further comprising a spring means interposed between the outer wall member and the second nut half and acting to bias both nut halves to the first position. The locking mechanism described in paragraph 5. (7) The spring means includes a compression spring having one end in contact with the outer wall member, and a bolt extending through the spring, passing through the outer wall member, and threaded into the second nut half. The locking mechanism according to claim 6, wherein the other end of the spring is brought into contact with the head of the bolt. (8) A utility model registration in which a horizontal shaft is provided that extends and passes through both nut halves in a direction perpendicular to the axis thereof, and the horizontal shaft has a hole through which the screw shaft is inserted. A locking mechanism according to claim 5.