JP2002213901A - Telescopic scale for inside measurement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To conduct accurate inside measurement for a construction object, and to make a graduation of dimension clearly expressed in a construction photograph. SOLUTION: This scale is constituted of a long frame body 1 of a fixed length, a thin and long inner frame body 3 engaged with the frame body 1 to be slided, and a plate-like body 5 engaged with the frame body 3 to be slid, an inner frame body front-end roller 9 and an inner frame body rear-end roller 7 are provided in both longitudinal ends of the inner frame body 3, a plate-like body front-end roller 10 and a plate-like body rear-end roller 8 are provided in both longitudinal ends of the plate-like body 5, a flexible tape-like endless belt 4 is laid over in order of the plate-like body front-end roller 10, the plate- like body rear-end roller 8, the inner frame body front-end roller 9 and the inner frame body rear-end roller 7, starting from a fixed point 6 provided in an upper face reverse part in the vicinity of a tip of frame body 1 to be returned to the fixed point, the inner frame body 3 or the plate-like body 5 is thereby pulled out by a drawing tongue 11, and the endless belt is pulled out thereby to display the dimension in response to a pulled out length.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is intended to clarify the inner dimensions when taking a construction photograph, such as general civil engineering work, electricity, gas, water supply, telephone, sewerage, construction, etc., which is required for construction work. Regarding the ruler shown.

[0002]

2. Description of the Related Art As an example, a method of superimposing two rulers or using a large measure-like object has been adopted in actual measurement of a digging width of a pipe digging bottom, etc. Lack of characteristics, especially when measuring with two, it is not possible to obtain the measured value unless one reading is subtracted from the scale of the other ruler, especially when it is a construction photo, the scale is hard to read, especially the bottom It was remarkable when it was curved or irregular.

[0003]

DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and accurately measures the internal dimensions of an object to be constructed, and measures the dimensions in a construction photograph attached with a scale. Is to provide a ruler that is easy to clearly indicate.

[0004]

According to the present invention, there is provided a telescopic measuring ruler having an elongated frame having a fixed length, an elongated inner frame which is fitted into a sheath of the frame and slides, and further comprises an inner frame. It consists of an elongated plate-like body that fits and slides inside the frame, and rollers are provided at both ends in the longitudinal direction of the inner frame and both ends in the longitudinal direction of the plate-like body. A tape-shaped endless belt is hung, one point of the endless belt is fixed to the frame at a fixed point on the back of the upper surface near the tip of the frame, and the upper surface of the frame and the endless belt are A scale is marked, and the endless belt is pulled out by pulling out the inner frame and / or plate.

[0005] The material of the frame and the inner frame is made of a strong and hardly deformable material such as plastic or metal, thereby preventing the scale from being deformed and the inside of the sheath for sliding the plate. Can do things.

[0006] The material and structure of the plate are made of a material that is strong, hard to deform, and lightweight, but has an appropriate resistance when sliding within the sheath of the frame, so that the plate can be made arbitrary. The size of the inner cavity of the frame, the size of the outer shape of the inner frame, the size of the inner cavity of the inner frame, and the size of the outer shape of the plate-shaped body are almost the same. However, it is also possible to attach an appropriate resistor, for example, a leaf spring or the like, to both sides or one side of the frame and the inner frame.

[0007] The endless belt is preferably flexible and hard to expand and contract, and the surface corresponding to the plate-like body surface is preferably made of a material having low resistance and hard to break. Examples thereof include rubberized cloth and nylon.

The endless belt is folded over four rollers provided at both ends in the longitudinal direction of the inner frame and both ends in the longitudinal direction of the plate-like body. One point of the endless belt is at the tip of the frame. It is fixed to the frame at a fixed point on the back of the upper surface in the vicinity.

As described above, the endless belt is attached with the rollers, and the endless belt is hung at the fixed point, the plate-shaped body front-end roller, the plate-shaped body rear-end roller, the inner frame body front-end roller, and the inner frame body rear-end roller in this order. It is made to return.

[0010] The scale is marked on the opposite side of the inner frame body with respect to the frame body by setting the end opposite to the drawing side to 0, and sequentially engraving the scale, and for the endless belt, the length drawn from the sheath of the frame body;
The total value of the maximum scale marked on the frame is displayed at the end of the drawn endless belt.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an inner frame 3 rather than a frame 1
2 shows a state in which the plate-like body 5 has been pulled out from the inner frame body 3 by about half, respectively. FIG. FIG. 3 is a side perspective view showing the state positions of a rear end roller 8, an inner frame body front end roller 9, and a plate-shaped body front end roller 10, and FIG. FIG. 4 shows a state in which the inner frame 3 is pulled out from the frame 1 but the plate 5 is accommodated in the inner frame 3, and FIG. FIG. 3 is an explanatory diagram showing a state where the endless belt is pulled out from FIG. 1 and a state position of the endless belt 4 and rollers 7, 8, 9, 10 at each time.

The telescopic inner size measuring ruler according to the present invention comprises an elongated frame 1 having a fixed length, an elongated inner frame 3 fitted and slid into the interior of the frame 1, and an interior of the inner frame 3. And an elongated plate-like body 5 which slides by fitting the inner frame body 3 with the front end roller 9 and the rear end roller 7 of the inner frame body at both ends in the longitudinal direction of the inner frame 3. Is provided with a plate-shaped body front end roller 10 and a plate-shaped body rear end roller 8, and a flexible tape-shaped endless belt 4 is hung via these four rollers. 1 is fixed to the frame 1 at a fixing point on the upper back surface near the front end.

With the above structure, the endless belt 4 is drawn out by pulling out the inner frame 3 and / or the plate-shaped body 5 and pulling out the knob 11, so that the scales are sequentially displayed.

FIG. 6 is a perspective view of the state shown in FIG. 1. A and B in FIG. 6 represent wall surfaces to be measured as examples.
By pulling out the inner frame 3 and the plate-like body 5 from the frame 1 between them, the distance (inner dimension) between AB can be measured at one time.

[0015]

Since the present invention has the above-mentioned structure,
With the ruler of the present invention, it is possible to easily and clearly measure the inner dimensions obstructed by walls and excavation walls in all types of civil engineering work and construction of structures.

In particular, when taking a construction photograph with a ruler, it is no longer necessary to superimpose two rulers and subtract the scale to see the dimensions. You can take clear pictures showing the exact inside dimensions.

The above effect can be obtained even when there is spring water, sludge, etc. on the measurement surface, and it is curved and irregular.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a side view perspective view of FIG. 1;

FIG. 3 is an explanatory view showing a state where both the inner frame and the plate-shaped body of the present invention are accommodated in the frame.

FIG. 4 is an explanatory view showing a state in which the plate-shaped body of the present invention is accommodated in an inner frame, and the inner frame is pulled out from the frame.

FIG. 5 is an explanatory view showing a state where both the plate-shaped body and the inner frame of the present invention are pulled out from the frame.

FIG. 6 is a perspective view of the state of FIG. 1;

[Explanation of symbols]

 1. Frame body 2. Scale 3. Internal frame 4. Endless belt5. Plate-like body 6. Fixed point 7. 7. Inner frame rear end roller 8. Rear end roller of plate-like body Inner frame front end roller 10. Plate-shaped body front end roller 11. Drawer knob

Claims (1)

[Claims] An elongated frame having a predetermined length, an elongated inner frame fitted and slid in the interior of the frame, and an elongated plate-shaped body fitted and slid in the interior of the inner frame. Rollers are provided at both ends in the longitudinal direction of the inner frame body and both ends in the longitudinal direction of the plate-shaped body, and a flexible tape-shaped endless belt is hung via these four rollers. One point is fixed to the frame at a fixed point on the back of the upper surface near the tip of the frame, and scales are marked on the upper surface of the frame and the endless belt.
Alternatively, an extendable inner dimension measuring ruler having a multistage extendable function, wherein the endless belt is pulled out by pulling out a plate-like body.