Teaching tool for displaying combination of cam sliding grooves

Abstract

The invention provides a teaching tool for displaying a combination of cam sliding grooves. The teaching tool comprises a machine frame and a press rod, wherein a horizontal plate and a containing body extending along both side walls of the top of the horizontal plate are arranged on the machine frame; and a hollow cavity with a front opening and a rear opening is formed in the containing body. The teaching tool further comprises a central plate, a rotating shaft, a driving guide wheel, a rocker rod assembly, a driven guide wheel, a connecting rod assembly and a sliding plate which are arranged in the hollow cavity, wherein a first sliding groove is formed in the middle of the top of the horizontal plate in the width direction; a second sliding groove is formed in one side wall of the central plate along the radial direction; and two alternate third sliding grooves are formed in the other side of the central plate, a boss in sliding fit with the first sliding groove is arranged at thebottom of the central plate, and the press rod is fixed on one side wall of the central plate. Compared with the prior art, the teaching tool can intuitively observe the linkage relationship among thedriving guide wheel, the driven guide wheel, the rocker rod assembly, the connecting rod assembly, the first sliding groove, the second sliding groove, the third sliding grooves and the fourth sliding groove, is simple to operate, convenient to use and learn, and is vivid.

Description

technical field [0001] The invention belongs to the technical field of teaching equipment, and relates to teaching aids for displaying cam chute combinations. Background technique [0002] Currently, teaching aids for demonstrating cam-slot combinations such as figure 1 As shown, it includes a body 1 with exhaust ports 11 on both sides; a lock cover 2 that is detachably connected to one end of the body 1; a press head 3 that protrudes radially and is detachable from the lock cover. The connected first extension part 31 ; the main column 4 is sleeved in the first extension part 31 and can slide radially relative to the lock cover 2 . The existing problem is: for products with pump heads, especially when they are placed sideways or upside down, since there is a gap 12 between the outer wall of the lower part of the lock cover and the inner wall of the body, the liquid will flow in from the exhaust port 11 and the gap 12. When the user is using the inner cavity of the main bo...

AI Technical Summary

Problems solved by technology

The existing problem is: for products with pump heads, especially when they are placed sideways or upside down, since there is a gap 12 between the outer wall of the lower part of the lock cover and the inner wall of the body, the liquid will flow in from the exhaust port 11 and the gap 12. The inner cavity of the main body, when the user is in use, that is, after the head 3 and the lock cover 2 are separated, the main column 4 will often have liquid brought out, resulting in waste of liquid, which is not environmentally friendly and unhygienic

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