KR200436470Y1 - Tape measure having a magnetic tip - Google Patents

Abstract

The present invention is provided with an end hook 24 having a hook 28 and a measuring mechanism 12 such as a tape measure with a tape, and a selective fixing to an end hook of the measuring mechanism. It relates to a measuring device comprising an optional fixing mechanism such as a magnet (30) for fixing with.

Description

Tape measure having a magnetic tip

1 is a plan view of the present invention.

2 is a side view of the present invention.

3 is a top perspective view of the present invention.

4A is a perspective view of an I-type tape according to the present invention.

4B is a front perspective view of an I-type tape according to the present invention.

5A is a perspective view of a V-type tape according to the present invention.

5B is a front perspective view of a V-type tape according to the present invention.

The present invention relates to a measuring device, and more particularly to a measuring device having an active mechanism (attached) to the object to be measured. This application is a magnetic tip of tape measure of Patent Application No. 60/164475, filed November 10, 1999, and its use method and magnetic tip of tape measure of Patent Application No. 09/541491, filed April 3, 2000 And a priority claim based on its use.

People have been using measuring instruments for a very long time. Tape measure and ruler (ruler) is known as a measuring instrument currently used, and when measuring a long length of 12 inches or more, a tape measure is usually used.

A typical tape measure can measure up to 100 feet, usually with a tip or end hook at one end of the tape. End hooks are placed on one end of a board, pipe, or other object under test, and are approximately 1/2 inch to 3/4 inch long.

When the object is to be measured, the end hook is positioned at one end of the object to be measured and the tape of the tape measure is drawn out to the opposite end.

At this time, the end hook of the tape measure will slide from the position placed at the one end of the object to be measured, and the end hook is again positioned at one end to pull out the tape. This will probably be repeated several times until the measurer can accurately measure the subject. Alternatively, the measurer may need another person to fix one end of the tape. Accordingly, there is a need for an improved type of end hook that allows the end of the tape to be secured to the object under test.

Often, people can drop objects when planning home improvements, working at gas stations, building buildings, and the like. The objects dropped are screws, nails and washers. Usually, these objects can fall in places that are difficult for people to drop, such as behind large objects or small entrances. To get it back, you often have to climb down the ladder to pick up and climb up the ladder to work. Thus, there is a need for a portable device that allows an operator to more easily retrieve dropped objects.

Some designs have been designed with magnets attached.

However, these are defective structures that do not meet the federal specifications or industry standards of the tape measure. In many conventional tape measures it can be seen that the magnet has been used in the exposed state. Magnets are brittle and easily break when dropped. Test 4.4.3.2 of the Federal Standard requires a drop test, in which a tape measure is dropped ten times from the height of five feet to the flat steel plate surface, with the edges colliding against the plate surface. It then checks whether any deformations that adversely affect the performance of the tape measure have occurred. In this drop test, the conventional tape measure in which the magnet is exposed is unavoidable to avoid cracking or breaking the magnet.

Another standard requires that the precision of the tape be provided to 1/32 inch. In the case of a tape measure combined with a conventional magnet, it was impossible to meet such precision because of the thickness of the magnet. Federal standards require tape measures to be extended to 36 inches, except for tips, but industry standards require tips to be extended to 7 feet or more without support. In any of the above standards it is required that there is no warpage when the tape is extended. However, conventional magnets inevitably generate warpage of the tape due to their size and weight.

Tape measure products in the United States must meet the growing global market structure, and Japanese standards have a test system similar to the United States above.

The aforementioned standards generally relate to type V, classes A and B. Similar federal, commercial and Japanese standards are used for different types and types of tape measure. Conventional tape measures have been produced that do not conform to the various standards described above or are unaware of the existence of such standards.

Accordingly, there is a demand for development of a tape measure having a magnet tip of a size and structure that can pass a drop test, a straightness test, and other US federal standards, a commercial standard, and a Japanese standard.

The present invention is a structure in which a magnet of high magnetic force is embedded in a through hole formed at the tip end of the end hook, wherein the magnet embedded in the tip tip has a small size and a thin thickness and the surface portion of the tip tip is embedded. It is almost co-planer with the surface.

The present invention provides a measuring device comprising a tape provided with an end hook and a magnet member detachably attached to the end hook temporarily or permanently.

Tape measure 10 of the present invention, as shown in Figures 1 to 3, includes a tape 12 for measuring the object and a magnetic member 14 to be detachable to the object to be measured.

* These tapes 12 and the magnetic force member 14 will be described in more detail as follows.

The tape 12 may be a typical tape measure or other measuring instrument, and may vary in length, width and shape.

At this time, the tape 12 needs a sufficient length to match the size of the object to be measured.

The tape 12 may also include metric marks using metric systems in accordance with US systems or other measurement systems.

The length of the tape 12 can range from less than 12 inches to more than a few hundred feet, with approximately 3 to 50 feet being suitable.

The width of the tape 12 can range from 1/4 inch to 2 inches or more, with about 1/2 inch to 1 inch being suitable.

The tape 12 may take a variety of shapes, preferably a rectangle consisting of a first end 16 and a second end 18 and a right end 20 and a left end 22.

The tape 12 may be made of various materials.

The material constituting the tape 12 is required to be capable of avoiding deterioration in order to prevent cracking or breakage during use of the tape 12.

The weight satisfies the federal standards, the commercial standards and the Japanese standards, and is required to be portable, but not very important.

The tape 12 may be made of wood, hard plastic, steel, stainless steel, nylon, aluminum or other suitable material.

The tape 12 includes a tape end hook 24. The tape end hook 24 may be a standard tape end hook used for a conventional tape measure. The tape end hook 24 may be formed in various shapes and has a substantially rectangular shape.

The tape end hook 24 has an attachment end 26 and a hook end 28, and the attachment end 26 and the hook end 28 are divided by the bent portion 34 of the tape end hook 24. It is done.

The length, width and material of the tape end hook 24 may vary. The length of the tape end hook 24 can be from about 1 inch or less to 3 inches or more, and about 1 and 3/4 inches are suitable. The width of the tape end hook 24 may be approximately equal to the width of the tape 12, or greater than or less than the width of the tape 12, and preferably slightly smaller than the width of the tape 12. The tape end hook 24 may be made from hard plastic, steel, stainless steel, nylon, aluminum or other suitable materials.

The attachment end 26 of the tape end hook 24 may be attached near the first end 16 of the tape 12. The first end 16 of the tape 12 is formed at a position adjacent to the bend 34 of the end hook 24. The attachment end 26 may be attached at a position proximate to the one end 16 via a pin or other suitable attachment means.

The tape endhook 24 may be permanently or detachably attached to the first end 16. Tape end hooks 24 may be detachably attached using snaps, hooks, loops, buttons, buttonholes or other removable attachment means, and may be pins, rivets, adhesives or other permanent adhesive means. It may be permanently attached to the first end 16.

The magnetic member 14 includes at least one magnet 30, two or more are preferable. The magnetic material may be any one that provides magnetic force, including neodium-iron-boron, samarium cobalt, alnico, ceramic ferrite or other magnetic materials. The magnetic force (magnetic flux density) can be as low as 2,200 gauss to as high as 20,000 gauss, and magnets consisting of neodium-iron-boron of 11,400 to 13,550 gauss, especially 13,550 gauss, are preferred. The magnet 30 is attached to the hook end 28 of the tape end hook 24 or positioned so that magnetic force is applied to the hook end 28. All applicable attachment means may be used for attachment of the magnet 30.

In a preferred embodiment of the present invention, the hook end 28 is formed with a through hole for accommodating the magnet. The magnet 30 has a thickness substantially the same as that of the end hook 24, and has the same size as that of the through hole formed in the hook end portion. By pressing the magnet 30 on the through hole, the friction force acts between the outer circumferential surface of the magnet and the inner circumferential surface of the through hole so that the magnet 30 is interfitted and the magnet 30 is embedded on the end hook 24.

As the magnet 30 is embedded into the through hole, structural integrity between these two members is ensured to withstand the impact applied during the standard drop test. The use of bonding, adhesives, metal plating (for magnets), coatings or other fastening methods and devices may be contemplated but is not required. The magnet 30 can generally maintain the accuracy of the tape measure by forming a co-planer that is approximately equal to the surface of the end hook 24. The magnet 30 may be formed in a variety of sizes, but it is desirable to have a diameter between 1/8 inch and 1/2 inch, and a light enough thickness to pass the straightness test.

Tape measure according to the present invention is used simply. The hook end 28 is placed on a metal part such as a metal bolt of the frame to be measured. The magnet 30 is held in a fixed state by the hook end 28 being stuck to the metal object by magnetic force. In this way, it is possible to easily perform the measurement work in the state that the fixing of the hook end 28 is made.

Tape measure according to the present invention can also be used to pull out nuts, bolts, and other metal objects located in a narrow space inaccessible to people. This is accomplished by using the tape 12 to insert the hook end 28 with the magnet 30 into a narrow space with a metal object. The magnet 30 coupled to the hook end 28 will adsorb a metal object, and the hook end 28 is then lifted out of the narrow space by retracting the tape 12 in the pulled out state.

According to another embodiment of the present invention, the frame 36 is coupled to the end hook 28 via a hinge 38, and the magnet 30 is embedded on the frame 36. 4 shows a tape measure of various shapes having a length of 50 inches, 100 inches, 200 inches or other with hinged end hooks 28. The connecting piece 40 is engaged with the hinge 42 of the end hook 28 and the hinge 38 of the frame 36. Although the thickness of the magnet 30 can be increased through the connecting piece 40, the thickness of the magnet must be thin enough to pass the accuracy test of the tape measure.

5 shows a V-shaped tape measure with the angle of the end hook 28 fixed. Hinge 38 is directly coupled to end hook 28 and frame 36. The magnet 30 is preferably embedded in the frame 36. In the above embodiment, the frame 36 and the magnet 30 can be folded and face down so that the function as the end hook 28 can be exerted.

While the description of the features and configurations of the present invention has been made by the preferred embodiment of the present invention, a person of ordinary skill in the art to which the present invention belongs may make modifications or changes without departing from the spirit and scope of the present invention. .

The present invention allows easy measurement by simply placing the magnet coupled on the end hook of the tape measure on the metal object. The operator can accurately measure the object by extending the tape after fixing the end hook to the object to be measured. Water can be measured.

This invention is useful for taking out or picking up the metal parts that are inaccessible, such as the corner or the back of a large object.The end hook is extended so that the metal parts that are fallen on the corner stick and stick to the end hook. The old iron bars are recovered.

Claims (4)

An end hook consisting of a tape coupled to the tape measure housing, an attachment end coupled to an end of the tape and attached to an end surface of the tape and a hook end bent from an end of the attachment end, and a through hole formed for accommodating a magnet inside the hook end; And, it is made of the same size as the size of the through hole is made of a magnet inserted into the fit by fitting the inside of the through hole, wherein the surface of the hook end portion and the surface of the magnet is characterized by forming a substantially the same plane (co-planer) Tape measure equipped with a magnetic tip. The tape measure provided with a magnet tip according to claim 1, wherein at least two holes and two magnets are provided. According to claim 1, wherein the magnetic flux density of the magnet is a tape measure provided with a magnet tip, characterized in that 13,550 gauss. The tape measure with a magnetic tip of claim 1, wherein the magnet is permanently fixed to the hook end of the end hook.

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