JPH08142860A - Magnet belt - Google Patents

Abstract

PURPOSE: To provide a magnet belt allowing magnet pieces to be fitted as dense as possible without a bolt protruding to the engaging face with a pulley and unlimited in the number of the engaging teeth of the pulley. CONSTITUTION: A magnet belt is constituted of belt base material 2 made of thermoplastic synthetic resin with one face provided with numerous engaging protrusions 3 to be engaged with a pulley, numerous magnet holding bodies 4 made of the same synthetic resin and rigidly fixed to the other face of the belt base material 2, yokes 5 fixed to the magnet holding bodies 4, and magnet pieces 6 fixed to the yokes 5. Each magnet holding body 4 is disposed in the overlapped position with the engaging protrusion 3 of the belt base material 2. A threaded cylinder 9 extended from the yoke 5 is provided in such a way as to pierce the magnet holding body 4 and belt base material 2 and to reach a thread receiving recession 11 formed at the engaging protrusion 3. A bolt 13 is screwed with the threaded cylinder 9 so that the head part recedes into the thread receiving recession 11, thus fixing the yoke 5 to the belt base material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnet belt used in a magnet belt transportation system (BTM).

[0002]

2. Description of the Related Art A magnet belt transportation system is one in which power is applied to a vehicle, the magnet belt is drawn around by this, and the magnet belt is attracted to an iron attracting surface of a rail, and the thrust of the vehicle is obtained by the magnetic frictional force of the two. Is. A conventional magnet belt used in this magnet belt transportation system is shown in FIG.
In the figure, the magnet belt 21 is provided with a large number of short-side engaging projections 23 that engage with a pulley (not shown) on one surface of a belt base material 22 made of elastic synthetic resin, and has a long side on the other surface. A large number of yokes 24 are fixed to each other by bolts 25 and washers 26 so as to extend in the short direction at intervals in the directions. The magnet 27 is fixed to the yoke 24.

[0003]

In the above-mentioned conventional magnet belt, the bolt 25 is provided on one surface engaging with the pulley.
Since it protrudes, it is necessary to avoid interference with the engaging teeth of the pulley, so that the magnet cannot be mounted densely, and the number of engaging teeth of the pulley is limited. As a result, there is a problem that the driving force of the pulley cannot be efficiently and smoothly transmitted. Therefore, the present invention provides a magnet belt in which the bolt does not protrude on the surface engaging with the pulley, the magnet can be mounted as closely as possible, and the number of engaging teeth of the pulley is not limited. It is an issue.

[0004]

In the present invention, in order to solve the above-mentioned problems, a belt base material 2 made of a thermoplastic synthetic resin having a large number of engaging projections 3 for engaging a pulley on one surface. And a magnet holder 4 which is made of a synthetic resin of the same quality as this belt base material 2 and is fixed to the other surface of the belt base material 2 in large numbers,
In the magnet belt 1 including the yoke 5 fixed to the magnet holder 4 and the magnet piece 6 fixed on the yoke 5, the magnet holder 4 is attached to the engaging protrusion 3 of the belt base material 2. The screw cylinders 9 are arranged so as to overlap with each other, the screw cylinders 9 are extended from the yoke 5, the magnet cylinders 4 and the belt base member 2 are penetrated, and the screw cylinders 9 are formed so as to reach the screw receiving recesses 11 formed in the engaging protrusions 3.
The screw cylinder 9 is inserted so that the head is immersed in the screw receiving recess 11.
The yoke 5 was fixed to the belt base material 2 by screwing a bolt 13 onto the.

[0005]

In the magnet belt 1 of the present invention, the magnet holders 4 are provided at the same positions as the engaging projections 3 on the back side of the belt base material 2, so that the number of the magnet pieces 6 is the same as that of the engaging projections 3. Become. Since the bolt 13 is screwed into the engaging projection 3 by embedding the head thereof, the engagement between the pulley and the belt is not hindered, and the number of the engaging projection 3 is not limited. Therefore, the driving force of the pulley can be efficiently and smoothly transmitted to the magnet belt 1.

[0006]

An embodiment of the present invention will be described with reference to the drawings. 1 is a sectional view of the magnet belt, and FIG. 2 is II in FIG.
-II sectional view, FIG. 3 is a bottom view of a part of the magnet belt before the filling, and FIG. 4 is a perspective view of the magnet belt.

The magnet belt 1 is provided with an endless belt base material 2 made of a synthetic resin having thermoplasticity and elasticity such as polyurethane. Although not shown, the belt base material 2
A large number of steel strands for reinforcement are embedded in the longitudinal direction. On one surface of the belt base material 2, a large number of engagement protrusions 3 in the short direction that engage with a driving pulley (not shown) are provided. A large number of magnet pieces 6 are fixed to the other surface of the belt substrate 2 via a magnet holder 4 and a yoke 5.

The magnet holder 4 is made of the same synthetic resin material as the belt base material 2, holds the yoke 5 and the magnet piece 6, and extends in the short direction at a distance from each other in the longitudinal direction of the belt base material 2. Many are stuck to. The magnet holder 4 is arranged at a position overlapping the engaging protrusion 3 on the opposite surface of the belt base material 2,
It is welded to the belt base material 2.

The yoke 5 comprises a bottom plate portion 7 and a pair of parallel suction pieces 8 standing upright from the bottom plate portion 7. Bottom plate 7
The screw cylinder 9 is welded to the base plate so as to extend at a right angle in the opposite direction to the suction piece 8. The yoke 5 is integrally formed with the magnet holder 4 by insert molding. After adhering the magnet piece 6 on the bottom plate portion 7, a polyurethane resin filling material 10 is filled between the attraction pieces 8 to form a magnet holder 4,
The yoke 5 and the magnet piece 6 are integrated.

The belt base member 2 has a screw receiving recess 11 on each engaging projection 3 and a through hole 12 penetrating from the central portion thereof to the opposite surface side. The threaded tube 9 of the yoke 5 is inserted into the through hole 12, and the end of the threaded tube 9 has a screw receiving recess 1
Has reached 1.

The bolt 13 is screwed into the screw cylinder 11 via a washer 14 so that the head of the bolt 13 is recessed in the screw receiving recess 11. The yoke 5 and the yoke 5 are fixed to the belt base material 2 by the bolts 13. After fixing the bolts 13, the recesses 11 are also filled with the polyurethane resin filling 15.

The magnet belt 1 of this embodiment is used, for example, by being wound around a pulley connected to power on a vehicle in a magnet belt transportation system. The engagement ridges 3 on the back side of the belt substrate 2 are engaged with the teeth on the outer circumference of the pulley. Since the magnet holders 4 are provided at the same positions as the engaging protrusions 3, the number of the magnet pieces 6 is the same as that of the engaging protrusions 3. Since the head of the bolt 13 is screwed into the engaging protrusion 3 by embedding the head, the bolt 13 does not interfere with the engagement between the pulley 1 and the belt 1, and the number of the engaging protrusions 3 is not limited. Therefore, the driving force of the pulley can be efficiently and smoothly transmitted to the magnet belt 1.

[0013]

As described above, according to the present invention, a belt base material 2 made of a thermoplastic synthetic resin having a large number of engaging projections 3 for engaging a pulley on one surface, and this belt base material. Two
A magnet holder 4 fixed to the other surface of the belt base 2, a yoke 5 fixed to the magnet holder 4, and a magnet piece fixed on the yoke 5. 6
And a magnet belt 1 and a magnet holder 4
It is arranged at a position overlapping the engaging protrusion 3 of the belt substrate 2, the screw cylinder 9 is extended from the yoke 5, penetrates the magnet holder 4 and the belt substrate 2, and is formed on the engaging protrusion 3. Since the yoke 5 is fixed to the belt base member 2 by being provided so as to reach the screw receiving recess 11, and the bolt 13 is screwed into the screw cylinder 9 so that the head is immersed in the screw receiving recess 11. The bolt does not project on the surface that engages with the pulley, the magnets can be mounted as tightly as possible, and it is possible to provide a magnetic belt in which the number of engaging teeth of the pulley is not limited.

[Brief description of drawings]

FIG. 1 is a sectional view of a magnet belt.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a bottom view of a part of the magnet belt before being filled with the filling material.

FIG. 4 is a perspective view of a magnet belt.

FIG. 5 is a perspective view of a conventional magnet belt.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 magnet belt 2 belt base material 3 engaging projections 4 magnet holder 5 yoke 6 magnet piece 9 screw cylinder 11 screw receiving recess 13 bolt

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takami Gomi 2-15-16-206, Kichijoji Kitamachi, Musashino-shi, Tokyo (72) Inventor Junichi Shionoya 6-5-19 Minami-Shinagawa, Shinagawa-ku, Tokyo Sanwa Techchi shares In-house (72) Inventor Eisaku Kitano 1-12-15 Shibadaimon, Minato-ku, Tokyo Inside Nippon Mektron Co., Ltd.

Claims (2)

[Claims] 1. A belt base material made of a thermoplastic synthetic resin having a large number of engaging projections in a short direction which engage with a pulley on one surface, and a belt made of a synthetic resin of the same quality as the belt base material. A large number of magnet holders fixed to the other surface of the base material so as to extend in the short direction at intervals in the longitudinal direction, a yoke fixed to the magnet holder, and a magnet piece fixed on the yoke. A magnet belt including: the magnet holder, the magnet holder being arranged at a position overlapping the engaging protrusion of the belt base member, extending from the yoke, penetrating the magnet holder and the belt base member, A screw cylinder is provided which reaches the screw receiving recess formed in the ridge, and a bolt for fixing the yoke to the belt base member by being screwed into the screw cylinder so that the head is immersed in the screw receiving recess. And a magnetic bell characterized by comprising: To. 2. The magnet belt according to claim 1, wherein the magnet holder is welded to the belt base material.