JPH0658304U - Calipers - Google Patents

Abstract

(57) [Summary] [Purpose] Accurately measure the size of the foot of a tile. [Structure] A fixed probe 14 is provided on the tip of the handle 12 so as to project laterally, and a movable probe 18 is provided on the slider 16 in the same direction. The protrusions 20 and 22 are provided in the facing direction so as to protrude from the attachments 24 and 26 fixed to the measuring elements 14 and 18, respectively. [Effect] Even if there is a burr on the back of the tile,
18 can be inserted deep into the back surface of the tile so as to straddle this burr, and the width dimension of the back foot can be accurately measured.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a caliper, and more particularly to a caliper suitable for measuring a width dimension of a neck portion of a tile back foot.

[0002]

[Prior art]

 As is well known, a caliper is a handle, a fixed probe protruding laterally from the tip of the handle, a slider slidably attached to the handle, and the fixed measurement from the slider. And a movable measuring element that is provided to project from the same side as the child. By sandwiching the object to be measured between the tips of the fixed measuring element and the movable measuring element, the dimensions of the width of the object to be measured can be measured. In recent years, when a slider is slid along the handle, a digital automatic caliper that automatically measures the moving distance of the slider and displays it on a liquid crystal panel or the like has come into wide use. There is.

By the way, on the back surface of the tile, as shown in FIG. 4, there may be provided a convex portion referred to as a back foot 2 for enhancing the bondability between the tile 1 and the mortar (not shown) attached. Many In many cases, the back foot 2 has an ant shape in which the width of the front end portion 2b is larger than that of the neck portion 2a.

[0004]

[Problems to be solved by the device]

 In order to measure the width of the neck part of this tile back, it is sufficient to insert the fixed calipers and movable stylus of the caliper from the short side of the tile to the back side of the tile and sandwich the neck part with these probes. As shown schematically in FIG. 5, since there is a bar 3 on the small edge of the tile, there is a problem that it is difficult to measure the width dimension of the neck portion accurately.

That is, when the tile having the shape shown in FIG. 4 is manufactured, the kneaded material of the kneaded material is extrusion-molded in the E direction of FIG. Cut into pieces and then bake into tiles. When the extruded body is cut, burrs are generated at the cut end, and burrs 3 remain on the short-side end surface of the tile product.

If the width of the neck portion 2a is measured with a normal caliper despite the presence of such a burr 3, the size of the neck portion 2a will be greatly measured by the amount of this burr 3 and the width of the neck portion 2a will be accurate. The width of the neck is not measured.

An object of the present invention is to provide a caliper capable of accurately measuring the width dimension of the neck portion of the back foot even with such burrs.

[0008]

[Means for Solving the Problems]

 The caliper according to claim 1, wherein a handle portion, a fixed measuring element protruding laterally from a tip of the handle portion, a slider slidably attached to the handle portion, and the fixed measurement from the slider. In a caliper having a movable measuring element protruding in the same lateral direction as a child, the fixed measuring element and the movable measuring element are characterized in that a convex portion is provided at a portion facing each other in a projecting direction tip portion. It is a thing.

The caliper according to claim 2 is the caliper according to claim 1, wherein the facing tip surfaces of the respective convex portions are perpendicular to the plane including the handle portion and the respective measuring elements, and are parallel to the projecting direction of the respective measuring elements. It is characterized by being a flat surface.

[0010]

[Action]

 In such a caliper of the present invention, since the fixed probe and the movable probe are provided with convex portions inwardly toward each other, even if there is a burr on the end face on the short side of the tile, this burr is bypassed. In this way, the fixed and movable probes can be inserted all the way to the back of the tile. Then, the back foot width dimension can be measured at the portion of the tile back foot that has no burr.

According to the vernier calipers of the second aspect, since the tips of the convex portions are less likely to be reduced by abrasion, the dimensions can be accurately measured over a long period of time.

[0012]

【Example】

 Embodiments will be described below with reference to the drawings. FIG. 1 is a plan view of a caliper according to an embodiment of the present invention, FIG. 2 is a plan view of an attachment, and FIG. 3 is a perspective view of the attachment.

The caliper 10 includes a handle portion 12, a fixed measuring element 14 projecting laterally from a tip of the handle portion 12, a slider 16 slidably fitted on the handle portion 12, A movable probe 18 that projects from the slider 16 in the same lateral direction as the fixed probe 14, and a convex portion provided at the portions of the fixed probe 14 and the movable probe 18 that face each other in the protruding direction. It is mainly composed of 20, 22. In this embodiment, the attachments 24 and 26 are fixed to the fixed measuring element 14 and the movable measuring element 18 with bolts 28 and 30, and the convex portions 20 and 22 are provided at portions facing each other.

As enlargedly shown in FIGS. 2 and 3, the projections 20 and 22 are trapezoidal in plan view, and are provided with front end surfaces 20a and 22a which are flat surfaces. The tip surfaces 20a and 22a are planes that are perpendicular to the plane including the handle 12, the fixed probe 14 and the movable probe 18, and are parallel to the projecting direction of the probes 14 and 18.

The caliper of this embodiment is a digital display type automatic caliper, and a mechanism for measuring the moving stroke of the slider 16 is built in the inside of the slider 16. The slide 16 is provided with a display plate 32 made of liquid crystal or the like for displaying the moving distance. Reference numeral 34 is an ON / ZERO switch, and 36 is an OFF switch.

When the width of the neck portion 2a of the back foot 2 of the tile 1 is measured using the caliper 10 configured as described above, first, the slider 16 is moved in the front end direction so that the convex portions 20 and 22 are brought into contact with each other. Move to the limit position. In this state, the ON / ZERO switch 34 is pressed to zero the display on the display plate 32. After that, the sirada 16 is retracted, and the fixed probe 14 and the movable probe 18 are inserted deep into the recess 4 on the back surface of the tile 1. Then, the width dimension of the back leg 2 can be accurately measured by bringing the convex portions 20 and 22 into contact with the neck portion 2a of the back leg 2 and reading the display on the display plate 32. That is, even if there is a burr 3 near the end of the back foot 2 as shown in FIG. 5, the fixed measuring element 14 and the movable measuring element 18 straddle the burr 3 by providing the convex portions 20 and 22. Then, it is inserted all the way into the recess 4. Then, without contacting the measuring elements 14 and 18 with the burr 3, only the convex portions 20 and 22 can be brought into contact with the neck portion 2a of the back leg 2 to measure the width thereof. Therefore, even if there is the burr 3, the width dimension of the neck portion 2a of the back foot 2 can be measured extremely accurately.

In the above embodiment, the measurement data is displayed on the display plate 32, but a lead wire may be connected to the caliper 10 so that the measurement data can be input to a recorder, a computer or the like.

In the above-described embodiment, since the tips of the protrusions 20 and 22 are flat tip surfaces 20a and 22a, even if the protrusions 20 and 22 come into contact with the tiles, the tips of the protrusions 20 and 22 are not included. The edges are hard to wear. Therefore, it is possible to accurately measure the dimensions over a long period of time.

[0019]

[Effect of device]

 As described above, according to the caliper of the present invention, the width dimension of the back foot of the tile can be accurately measured. According to the vernier calipers of the second aspect, since the tips of the convex portions are less likely to be worn, the width dimension of the back foot neck portion can be accurately measured for a long period of time.

[Brief description of drawings]

FIG. 1 is a plan view of a caliper according to an embodiment.

FIG. 2 is a plan view of the attachment, in which (a) shows the attachment 24 and (b) shows the attachment 26.

FIG. 3 is a perspective view of the attachment 24.

FIG. 4 is a perspective view of a main part of the back surface of the tile.

FIG. 5 is a schematic perspective view showing a burr of a tile.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 tile 2 back foot 3 burr 4 concave part 10 calipers 12 handle part 14 fixed measuring element 16 slider 18 movable measuring element 20,22 convex part

Claims (2)

[Scope of utility model registration request] 1. A handle portion, a fixed measuring element protruding laterally from a tip of the handle portion, a slider slidably attached to the handle portion, and the fixed measuring element from the slider. A caliper having a movable measuring element protruding in the same lateral direction, wherein a caliper is provided at portions of the fixed measuring element and the movable measuring element in the projecting direction tip portions facing each other. 2. The front end surface of each convex portion, which faces each other, is a plane that is perpendicular to a plane including the handle and each probe and is parallel to a projecting direction of each probe. Calipers characterized by being present.