JPH0249521Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a tape measure, and particularly relates to a fastening structure between a tape and a tip member.

(Prior Art) In a conventional tape measure, a tip metal fitting is generally fixed to the tip of the tape using only a rivet or the like. By the way, the general structure of the tape is such that the core is made of a large number of filamentous materials such as glass fibers aligned in the vertical direction, and the outer periphery of the core is coated with a synthetic resin. Therefore, if the shaft of a rivet or the like passes through this tape and the end fitting is fixed, if a strong tensile force is applied to the tape, stress will be concentrated on the shaft of the rivet and the tape will unravel from that point. There is a risk that the tip fitting may come off easily.

(Problems to be Solved by the Invention) It is an object of the present invention to provide a tape measure in which the above-mentioned drawbacks are eliminated and the tape and the tip member are more securely fixed.

(Means for solving the problem) The tape measure of the present invention has a bulge 2 at the tip of the tape 1.
At the same time, grooves 5 and 5' into which the above-mentioned bulges 2 fit are provided on the inner surfaces of the upper and lower clamping plates 4 and 4' of the tip member 3 that is fixed to the tip of the tape 1.
Fit the distal end bulge 2 into the grooves 5, 5' of the distal end member 3, and attach the tape 1 and the distal end member 3 to the clamping plates 4, 4' by any method such as riveting or welding. It is configured to be fixedly attached, and fully achieves the above purpose.

(Function) In the present invention, the tape 1 is not only fixed at its tip member 3 and the clamping plates 4, 4', but also at the bulge 2.
The grooves 5 and 5' of the clamping plates 4 and 4' are also fitted and fixed, and this bulging part 2 is fixed to the tape at a partial portion, such as a rivet. Rather, the entire width of the tape resists the tensile force, and therefore, the tape does not unravel and exhibits sufficient adhesion even against excessive tensile forces.

(Embodiment) Figures 1 and 2 show a first embodiment of the present invention, in which both the tape 1 and the mouth skin 6 covering the upper and lower surfaces of the tip of the tape 1 are made of resin such as PVC and have a circular cross section. The tape 1 is wound around the core rod 7, and a bulge 2 having a diameter larger than the thickness of the tape 1 is provided at the tip of the tape 1.
The tip member 3 with a retaining ring 8 that is fixed to the tip of the
Grooves 5 and 5' are provided on the inner surfaces of the upper and lower clamping plates 4 and 4' formed of synthetic resin such as ABS resin, into which the tip bulges 2 of the tape 1 are fitted.
The distal end bulging portion 2 is fitted into the grooves 5, 5' of the distal end member 3, and the entire clamping plate portion 4 including the fitting portion is
4', the core rod 7, tape 1, mouthpiece 6, and clamping plate parts 4, 4' are ultrasonically welded together.

FIG. 3 shows a second embodiment of the present invention, which differs from the first embodiment in the method of forming the bulge 2 provided at the tip of the tape 1, which is wound around the core rod 7. This is the point where only the mouth skin 6 was included.

Next, FIG. 4 shows a third embodiment of the present invention, which differs from the above two embodiments in that a plurality of bulges 2 are provided. Accordingly, a plurality of grooves 5, 5' into which the bulging portion 2 is fitted are also provided in the upper and lower clamping plate portions 4, 4'.

In each of the above-mentioned embodiments, the clamping plate parts 4, 4' other than the grooves 5, 5' forming part and the tape 1 are fixed by welding, but other methods for fixing these parts are possible. For example, it does not lie horizontally even when riveted as in the past.

(Effects of the invention) By being configured as described above, the present invention has the following advantages:
Even if an excessive tensile force is applied to the tape, the stress will not be concentrated at the partial attachment point between the tape and the tip member as in the conventional case, and the entire width of the tape at the bulge will be used to prevent this stress. Since it can withstand tensile force, it prevents a portion from unraveling and has the effect of making the tape even more firmly fixed to the tip member.

[Brief explanation of the drawing]

1 and 2 show a first embodiment of the present invention, with FIG. 1 being a perspective view of the main part and FIG. 2 being a longitudinal sectional view thereof. FIG. 3 is a longitudinal cross-sectional view of a main part showing a second embodiment of the present invention, and FIG. 4 is a longitudinal cross-sectional view of a main part showing a third embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Tape, 2... Swelling part, 3... Tip member, 4, 4'... Clipping plate part, 5, 5'... Groove, 6...
...mouth skin, 7...core rod, 8...hanging ring.

Claims (1)

[Scope of utility model registration request] A bulge is provided at the tip of the tape, and a groove into which the bulge fits is provided on the inner surface of the upper and lower clamping plates of the tip member that is fixed to the tip of the tape. A tape measure that is fitted into a groove of a member and secured by an arbitrary method to a tape and a tip member at a clamping plate.