JPH0454403Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] The present invention relates to a spirit level.

[Conventional technology and its issues]

As a conventional level, for example, as shown in FIG. 3, there is one in which a level body 1 has a built-in magnetic catch 2 for fixing the level body 1 to a surface to be measured (not shown). The magnetic catch 2
are housed in the level body 1 at appropriate intervals in the left and right direction, and their tip surfaces are flush with the measurement surface 3 of the level body 1 or are slightly recessed into the level body 1. It is fixed with two machine screws 4 while aligning the position. The level main body 1 is made, for example, by cutting an aluminum extrusion molded product into appropriate dimensions,
The openings 5 at both left and right ends are closed by stoppers 6 made of synthetic resin, for example.

In such a conventional spirit level, when attaching the magnetic catch 2, it is necessary to tighten the machine screw while making delicate alignment. There is a problem in that it is difficult and time-consuming to fix the level in a position where it is recessed into the level body 1 only slightly or slightly. Furthermore, if the magnetic catch 2 protrudes even slightly from the measurement surface 3, there is a problem that accurate level measurement cannot be performed.

The present invention has been made in consideration of the above-mentioned circumstances, and it is an object of the present invention to provide a spirit level that allows a magnetic catch to be fixed in an accurate position with simple work.

[Means to solve the problem]

In order to achieve the above-mentioned purpose, the level according to the present invention is equipped with a pair of magnetic catches that are exposed on the measuring surface at appropriate intervals in the left and right direction in the level body. Each closure is provided to close the openings at both the left and right ends of the instrument body, and each closure is provided with an insertion part that is inserted into the level body, and within this insertion part there is a magnetic catch holding part that is open to the measuring surface side. A vacant chamber is formed, and a magnetic catch is inserted into the vacant chamber so that it can move forward and backward toward the measuring surface, and a spring that biases the magnetic catch toward the measuring surface is housed. It is characterized in that an insertion hole is formed in the side wall portion through which the tip of the magnetic catch is inserted, and a stop portion is provided at the tip of each magnetic catch to be received by the inner surface of the side wall portion.

[Effect]

In the level of the present invention, a spring and a magnetic catch are inserted into the empty space of the stopper, and while the magnetic catch is pushed into the empty space against the spring, the stopper is inserted a predetermined amount into the level body. The tip of the magnetic catch is fitted into the insertion hole by the urging force of the spring, and the stop part of the magnetic catch is received by the side wall on the measuring surface side of the level body, so that the magnetic catch is attached to the level body. fixed within. Therefore, if the distance between the tip of the magnetic catch and the stop is less than or equal to the thickness of the side wall on the measuring surface side of the level body, the tip of the magnetic catch will be flush with the measuring surface or It will be fixed at a position that is slightly recessed into the spirit level body.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 1 is a partially cutaway front view of a spirit level according to an embodiment of the present invention, and FIG. 2 is a vertical cross-section taken along the line -- in FIG.

The level main body 1 is made by cutting an aluminum extrusion molded product into appropriate dimensions, and the openings 5 at both left and right ends are respectively closed with stoppers 7 made of synthetic resin.

Each stopper 7 has an insertion part 8 inserted into the level body 1, and a measurement surface 10 is provided in the insertion part 8.
A cavity 9 for holding the magnetic catch 2 is formed which is open on the sides (upper and lower sides of the figure). The magnetic catch 2 is inserted into the empty space 9 so as to be movable forward and backward toward the measuring surface 10, and a spring 11 for biasing the magnetic catch 2 toward the measuring surface 10 is housed.

Two slit-shaped insertion holes 13 through which the tip of the magnetic catch 2 is inserted are formed at both left and right ends of the side wall 12 of the level main body 1 on the measuring surface 10 side. A stop portion 15 is formed at the tip of each magnetic catch 2 to be received by the inner surface 14 of the side wall portion 12. The distance between this stop portion 15 and the tip end surface 16 of the magnetic catch 2 is set to be less than or equal to the thickness of the side wall portion 12.

The magnet catch 2 is composed of a magnet body 17 and a pair of iron plates 18 fixed to the front and back of the magnet body in a sandwich-like manner.
It consists of stepped surfaces formed on both the left and right ends of.

In this level, the spring 11 and the magnetic catch 2 are inserted into the empty space 9 of the stopper 7, and the magnetic catch 2 is pushed into the empty space 9 against the spring 11, and the stopper 7 is placed in the level. When inserted a predetermined amount into the main body 1, the tip of the magnetic catch 2 is fitted into the insertion hole 13 by the biasing force of the spring 11.
The magnetic catch 2 is fixed within the level body 1 by the stop portion 14 of the magnetic catch 2 being received by the side wall portion 12 of the level body 1 on the measuring surface 10 side. Here, since the distance between the distal end surface 16 of the magnetic catch 2 and the stop part 15 is formed to be less than the thickness of the side wall section 12 on the measuring surface 10 side of the level body 1, the distal end surface of the magnetic catch 2 16 is fixed at a position flush with the measurement surface 10 or at a position where it is slightly recessed into the level body 1. Therefore, the magnetic catch 2 can be accurately positioned and fixed within the level body 1 at the same time as the stopper 7 is attached within a short time by a simple operation.

[Effect of idea]

According to the spirit level of the present invention, as explained above, a spring and a magnetic catch are inserted into the empty space of the stopper, and with the magnetic catch pushed into the empty space against the spring, the stopper is placed on the level. By simply inserting it into the main body, the magnetic catch can be installed within a short period of time, and at the same time, the magnetic catch can be accurately positioned and assembled into the level body.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view of a spirit level according to an embodiment of the present invention, FIG. 2 is a vertical cross-section taken along the line -- in FIG. 1, and FIG. 3 is a front view of a conventional example. In the figure, 1... Level body, 2... Magnetic catch, 7... Closure, 8... Insertion part, 9... Empty chamber, 10... Measuring surface, 11... Spring, 12... Side wall part. , 13...Insertion hole, 14...Inner surface of side wall portion,
15...Stop section.

Claims (1)

[Scope of Claim for Utility Model Registration] In a spirit level that has a pair of magnetic catches that are exposed to the measuring surface at appropriate intervals in the left and right directions within the spirit spirit body, openings at both left and right ends of the spirit spirit body are provided. Each stopper to be closed is provided, each stopper is provided with an insertion part to be inserted into the level body, and a cavity for holding a magnetic catch is formed in the insertion part, which is open to the measuring surface side.
A magnetic catch is inserted into this empty space so that it can move forward and backward toward the measurement surface, and a spring that biases the magnetic catch toward the measurement surface is stored. 1. A spirit level characterized in that an insertion hole is formed through which the tip of the magnetic catch is inserted, and a stop portion is provided at the tip of each magnetic catch to be received by the inner surface of the side wall.