JPH0520966Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial field of application) The present invention relates to a shape measuring device for analyzing the surface shape of various objects, and in particular to a lid body that closes a stand to be measured placed at the top of the housing. Regarding structure.

(Prior art) Conventionally, in a surface profile measuring device that images a standard chart as a reference with a camera, builds a loop circuit, and sets the chart to the best condition from time to time,
First, the loop circuit was clamped by operating a separately provided switch, the lid of the device integrated with the standard chart was opened, and the piece to be measured was then set and measured. That is, the lid and the switch are not linked, and the switch is operated before the lid is opened and the sample to be measured is set.

(Problems to be solved by the invention) As mentioned above, conventional shape measuring devices require two actions: pressing the switch and opening the lid, which can lead to errors in standard setting due to forgetting to press the switch. The drawback was that it lacked speed.

(Means for Solving the Problems) The lid structure of the shape measuring camera of the present invention is such that the bracket part to which the standard chart, which serves as the standard for the level of the loop circuit, is attached and the upper lid part are placed separately. Even if you lift the top cover and operate the switch, the bracket does not move, and the standard chart held on the bracket also remains stationary for a certain period of time, and by lifting the top cover even further, the bracket also lifts and the standard chart is It has a structure in which the chart is also lifted up and the switch is arranged so as to be interlocked with the top lid.

(Examples) Next, examples of the present invention will be described with reference to the drawings.

1 to 3 are longitudinal cross-sectional views showing the lid structure of the shape measuring device according to the embodiment of the present invention in the order of operation from the closed state to the fully opened state of the lid, FIG. 1 shows the closed state, FIG. 2 shows the intermediate open state, and FIG. 3 shows the fully opened state.
Further, FIG. 4 is a plan view of an embodiment of the present invention, and FIG. 5 is a front view. Referring to these figures, a bearing stand 3 is fixed to a single stand to be measured 2 attached to the upper part of a casing 1 of the main body of the apparatus, and a shaft 4 is supported through a bracket 5 and one end of an upper cover 6. The bracket 5 to which the standard chart 9 is attached and the top cover 6 are each pivotally supported on the bearing stand 3 by a hinge mechanism structure. Furthermore, the single stand 2 to be measured has a concave central portion, and an imaging aperture 8 is provided in the center of the smooth surface serving as the measurement piece support surface 7, and a hole through which a switch operating shaft 10 passes vertically is provided at the outer edge. The microswitch 11 is constantly pushed up from below by the compression spring 12 of the microswitch 11. A standard chart 9 is attached to the bracket 5, which has a mechanical structure of a bearing stand 3 and a hinge.
The chart holder 13 with the standard chart 9 attached is screwed, and the center of the standard chart 9 is placed on the stand 2 to be measured.
It has a positional relationship that coincides with the center of the imaging aperture 8. Furthermore, the upper cover 6, which covers the outer surface of the bracket 5 and has a mechanical structure of a bearing stand and a hinge, has a pin 14 on the side of the stand 2 to be measured that pushes down the switch actuation shaft 10, and a circular shape in the center. A dish-shaped inner lid 15 with a hole is attached to the chart holder 13 in alignment with its central axis. The bracket 5 extends into a space 16 between the upper cover 6 and the inner cover 15.

Next, the operation of the above embodiment will be explained with reference to FIGS. 1 to 3. In order to capture the standard chart 9 and always maintain a constant reference level of the camera image,
In a device that operates a loop circuit, when the top cover 6 is first opened from the closed state shown in FIG. , microswitch 11 electrically switches to clamp the loop circuit. This is the state shown in FIG. 2, and during this period (up to the angle θ), only the upper cover 6 assembly moves, and the bracket 5 assembly in which the standard chart 9 is installed remains stationary. When the upper lid 6 is further lifted from this state as shown in FIG. 3, the inner surface of the inner lid 15 fixed to the upper lid 6 engages with the tip 5a of the bracket 5, lifting the bracket 5 and opening the standard chart 9 as well. I can do it.

(Effect of the invention) As explained above, the present invention is based on standard chart 9.
The bracket 5 to which the switch is attached and the top cover with the switch operating pin 14 are separated and pivoted, and simply by opening the top cover 6, the switch linked to the top cover is activated, and after a certain period of time, the standard chart part is also activated. Therefore, when the standard chart part is opened, the switch is always activated and the loop circuit is clamped, and these operations can be performed only by operating the top cover.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of the embodiment of the present invention in the lid closed state, FIGS. 2 and 3 are longitudinal sectional views of the embodiment of the invention in the lid open state, and FIGS. 4 and 5 are respectively 1 is a plan view and a front view of an embodiment of the present invention; FIG. 1... Housing of the device main body, 2... Stand to be measured,
3...Bearing stand, 4...Shaft, 5...Bracket, 6
... Upper lid, 7 ... Measurement piece support surface, 8 ... Opening hole,
9...Standard chart, 10...Switch operating axis,
11... Micro switch, 12... Compression spring,
13...chart holder, 14...pin, 15
...Inner lid.

Claims (1)

[Scope of utility model registration request] A space is formed between a bearing part formed on a stand to be measured at the upper part of the apparatus main body, a top cover which is rotatably supported by the bearing part and which closes the stand, and a back side of the top cover and between them. an inner lid fixed to the inner lid, a bracket rotatably supported by the bearing portion and extending into the space, a standard chart holder secured to the bracket, and a standard chart holder attached to the apparatus main body and configured to open and close the upper lid. and the bracket is held stationary without contacting the inner cover when the upper cover is initially opened, and engages with the inner cover when the upper cover is opened by a predetermined angle or more. A lid structure of a shape measuring device characterized by being pushed up.