JPS6138113Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a reel stand, and more specifically, to a back tension mechanism that applies back tension to a supply reel stand.

The reel stand is composed of two or more stand components, and a slip mechanism is inserted between them to provide a safety mechanism to prevent torque exceeding a predetermined value from being transmitted. In this case, when attaching the reel stand disk and the reel stand with a felt plate attached to one side to the reel shaft attached to the mechanical chassis, a back tension spring is interposed between the reel stand disk and the mechanical chassis, so that the reel The installation work of the base disk was troublesome and the workability was not good.

This invention aims to eliminate the above-mentioned drawbacks, and its features include a mechanical chassis with a pair of tapered protrusions formed on the reel shaft mounting boss, and a felt plate attached to one side of the reel. A hole with a diameter slightly larger than the diameter of the boss described above in the base disk, a notch sufficient to allow the wide side of the protrusion to pass through at one opposing location that divides the circumference of the hole into four, and the other opposing location A notch is provided at a location where the protrusion is slightly wider than the narrow side of the protrusion, so that the reel base disc can be locked to the boss by allowing slight movement in the longitudinal direction of the boss. This provides a mechanism for An embodiment of this invention shown in the drawings will be described in detail below.

As shown in Fig. 1, the reel stand of this invention has a mechanical chassis 1 made of synthetic resin with a reel shaft mounting boss 2 protruding from a pair of protrusions 3, 3 having a tapered part, and an annular felt plate 4 on one side. A hole 6 with a diameter slightly larger than the diameter of the boss is provided in the center of the pasted reel stand disk 5, and a wide portion 31 of the protrusion is provided at one opposing portion of the circumference of the hole as shown in FIG.
forming notches 7, 7 slightly wider than the width of the protrusion, and notches 8, 8 slightly wider than the width of the narrow part 32 of the protrusion and narrower than the wide part at the other opposing location;
The reel stand disc 5 is configured to be able to be locked to the boss 2. In the figure, reference numeral 9 is a spring for applying back tension and pushes up the reel base disk 5, 10 is a reel base cylinder, 11 is a fixing washer, and 12 is a reel shaft.

The reel stand of this invention consists of the above-mentioned components, and the assembly procedure of the reel stand will be described below.

As shown in Figures 1 and 2, the mechanical chassis 1
At the time of molding, a spring 9 for applying back tension is arranged around the boss from the side of the reel shaft 12 inserted into the boss 2, and then the reel base disc 5 is placed with the surface to which the felt plate 4 is attached facing upward. The notches 7, 7 are aligned with the protrusions 3, 3 protruding outward from the outer edge of the upper end of the boss 2, and the reel base disc is moved against the elasticity of the spring 9 so that the protrusions 7, 7 are placed on the mechanical chassis side. When the protrusions 3, 3 have passed through the notches 7, 7, the reel base disk 5 is approximately pushed down.
When the notches 8, 8 match the protrusions 3, 3 by rotating 90 degrees, the pressing force is released, and only the narrow parts 32, 32 of the protrusions 3, 3 pass through the notches 8, 8, and the wide part 3
1 and 31 are engaged with the upper surface of the reel base disc 5 on the side to which the felt plate is attached. This state is shown in FIGS. 1 and 2. After this, attach the reel base cylinder part 10 to the reel shaft 12 and fix the washer 11 to the tip of the shaft.
The reel stand is completed by attaching the .

When this assembly is completed, the felt plate 4 is in contact with the lower surface of the reel base cylinder part 10 as shown in FIG. Care is taken to create a predetermined gap between the mounting surface and the lower surface of the wide portions 31, 31 of the protrusions 3, 3.

As mentioned above, this invention forms a protrusion with a pair of tapered parts on the reel shaft attachment boss of a mechanical chassis, and a reel base disk with a felt plate attached to one side has a diameter slightly larger than that of the boss. A notch that is sufficient for the wide side of the protrusion to pass through the hole and one opposing location that divides the circumference of the hole into four, and a notch that is slightly wider than the narrow side of the protrusion at the other opposing location. , and the reel base disc is configured to be able to be locked to the boss by allowing some movement in the length direction of the boss, so that the reel base disc can be secured to the boss by suppressing the elasticity of the spring for applying back tension. Since the plate can be locked so that it can be moved slightly in the height direction, assembly is facilitated, workability is improved, and the structure is simple.

[Brief explanation of drawings]

The figures show one embodiment of this invention, with FIG. 1 being a sectional view of the reel stand, and FIG. 2 being a perspective view of the main parts showing the state in which the reel stand disk is locked to the boss. Explanation of symbols, 1... Mechanical chassis, 2...
...Boss, 3, 3... Protrusion, 31, 31... Wide part, 32, 32... Narrow part, 4... Felt board,
5... Reel stand disc, 6... Hole, 7, 7, 8, 8
... Notch, 9 ... Spring, 10 ... Reel base cylinder part, 11 ... Fixed washer.

Claims (1)

[Scope of utility model registration request] The reel shaft mounting boss of the mechanical chassis has a pair of protrusions with a tapered part formed thereon, and a reel base disc with a felt plate attached to one side has a hole with a diameter slightly larger than the diameter of the boss described above, and the circumference of the hole. A notch that is sufficient for the wide side of the protrusion to pass through is provided at one opposing location of the partition, and a notch that is slightly wider than the narrow side of the protrusion is provided at the other opposing location,
A reel stand configured such that a reel stand disk can be locked to the boss with some movement allowed in the longitudinal direction of the boss.