JP7621642B2 - Sandpaper dispenser - Google Patents

Description

The present invention relates to a dispenser that holds rolled sando-per in an easy-to-remove manner and can dispense the required type and amount.

Conventionally, sandpaper for polishing is used in handheld polishers (called sanders) that are used for finishing the surface of an object to be polished, with the sandpaper formed into a circular sheet attached to the surface of a disk that rotates by power. This sandpaper is supplied as a sandpaper roll, with an adhesive applied to the backing and wound up in a removable manner on a strip-shaped backing paper.

When using the sandpaper, the sandpaper is stretched appropriately, cut to the desired length, and attached to the sander's disk for work. However, the sandpaper wears out during sanding work, and every time the sandpaper is replaced, the used sandpaper ends up scattered around the work area, reducing work efficiency. Also, if the sandpaper roll is placed directly on a table or floor, it can accidentally roll away when pulling out the paper, making it difficult to use.

For example, a sandpaper roll storage container has been disclosed that includes a box-shaped main body with a lid that stores a rollable sandpaper roll, an opening formed on the side of the main body that pulls out the backing of the sandpaper roll together with the sandpaper to the outside, an opening formed in a position parallel to the opening that pulls in the backing after the sandpaper has been peeled off, and a backing winding shaft that is rotatably installed inside the main body and rotates by turning a handle provided on the side of the main body to wind up the backing that has been pulled in from the opening. By storing the sandpaper roll in a box, the roll does not roll even when the backing is stretched, and can be kept in a fixed position, preventing the backing from scattering to the outside (see Patent Document 1).

Also, a sandpaper attachment tool that can be used for finishing flat surfaces by wrapping the sandpaper around the shaft 2-3 times, then closing the lid, and the sandpaper between the lid and the main body is fixed by the lid, and the sandpaper is tensioned without reversing due to the engagement of the ratchet and gear (see Patent Document 2).

Other examples include a paper holder for toilet paper, cooking sheets, etc., which consists of a bracket, a holding shaft for holding the roll of paper that is rotatably supported by the bracket, a positioning shaft that is rotatably supported by the bracket so that the roll of paper held by the holding shaft comes into contact with its outer periphery, and a flap that is rotatably supported by the bracket so that its rear end can come into contact with the outer periphery of the positioning shaft, and which maintains a stable pulled-out state and allows the paper to be cut easily and neatly with one hand (see Patent Document 3).

A roll paper holder with spare is disclosed that has two rotors with a roll paper insertion shaft and a bearing on roughly opposite sides, inserting the current roll paper into one of the roll paper insertion shafts and attaching it to the bearing of the other rotor, inserting a spare roll paper into the free roll paper insertion shaft, and when the current roll paper is used up, removing the roll paper insertion shaft from the bearing, rotating both rotors and attaching the roll paper insertion shaft with the spare inserted to the other bearing, allowing you to postpone disposal of the empty core and quickly switch between the current and spare roll paper and start using it (see Patent Document 4).

Japanese Utility Model Application Publication No. 1-129087 Japanese Utility Model Application Publication No. 48-64098 Utility Model Registration No. 3117591 JP 2010-213833 A

The present invention has also been developed in consideration of the problems with the conventional technology described above, and aims to provide a sandpaper dispenser that is easy to use and allows the user to quickly dispense the required grit and length of sandpaper without waste, and that not only improves work efficiency but also helps keep the workplace tidy and organized.

For this reason, the sandpaper dispenser of the present invention is characterized in that it comprises a pair of support pillars erected on a base, a core holder that is vertically movable on the support pillars and serves as a support shaft for rotatably holding the sandpaper wound in a roll, and the core holder is a cylindrical tube having through holes formed at both ends through which the support pillars pass vertically. Also, the second characteristic is that multiple sets of the pair of support pillars and the core holders corresponding to the support pillars are provided in parallel.

The present invention has the following excellent effects.
(1) Sandpaper of the required size and length can be taken out quickly and efficiently in the required amount.
(2) The rolls can be easily replaced or removed, and the structure is simple and economical to manufacture.
(3) The sandpaper is not scattered, and the work area can be kept tidy. (4) The core holder naturally presses the roll downward, creating a stopper function that keeps the roll in place and prevents the roll from rolling over on its own and unwinding, or being pulled out unnecessarily.
(5) Since the entire tool is exposed, the type of sandpaper installed and the amount remaining can be seen at a glance.

FIG. 1 is an exploded perspective view of a sandpaper dispenser according to the present invention. 1A is a front view, FIG. 1B is a plan view, and FIG. 1C is a side view showing a sandpaper dispenser according to the present invention. FIG. 2 is a perspective view showing a state in which the sandpaper dispenser according to the present invention is used. FIG. 1 is a perspective view showing a conventional dispenser.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
First, for comparison with the present invention, an example of a conventional dispenser is shown in Figure 4. This dispenser is configured such that a plurality of sandpaper rolls 4 of different grit sizes are housed in a box 1 with an open top, each in a space partitioned by a partition plate 8, a shaft rod 7 is inserted into the hollow core of the roll 4 from the side of the box 1 to hold it in a rotatable manner, and the required amount of sandpaper 4 is appropriately dispensed from a slit 10 drilled in a guide plate 9 provided on the front surface of the box 1.

This conventional technology does indeed allow sandpaper of different grit sizes to be loaded, improving ease of use and helping to keep things tidy, but in reality, there are drawbacks to this, such as poor water resistance and durability depending on the material of the box 1, limited freedom in terms of the diameter and width of the sandpaper that can be stored, and time-consuming loading of the roll.

As shown in Figs. 1 and 2, the dispenser of the present invention is basically composed of a pair of support posts 2, 2 erected on a rectangular plate-shaped base 1, and a core holder 3 that is mounted on the support posts 2, 2 so as to be movable up and down and serves as a support shaft for holding a roll of sandpaper 4 that is wound in a roll shape so that it can roll.

The base 1 is made of metal such as a steel plate, and the supports 2,2 are preferably rod-shaped steel materials. The core holder 3 is a steel tubular tube, i.e., a steel pipe, with through holes 3a,3a drilled at both ends through which the supports 2,2 can pass vertically. The core holder 3 is made to be longer than the width of the sandpaper roll 3, or to a length corresponding to various widths. Then, after the core holder 3 is inserted into the hollow core 4a of the sandpaper roll 4, the through holes 3a,3a at both ends are inserted from above into the supports 2,2 and fixed. In this way, the sandpaper roll 4 is mounted on the supports 2,2 so that it can move vertically and roll.

Furthermore, by arranging a pair of supports 2, 2 and a core holder 3 corresponding to the supports 2, 2 in parallel on the same base 1, it is possible to install multiple sets of sandpaper 4 with different grits, strip widths, roll diameters, etc. Then, sandpaper 4 of the required grit and length can be quickly removed without waste. This not only improves ease of use and work efficiency, but also helps keep the workplace tidy.

In particular, the core holder 3, by its own weight, naturally presses the sandpaper roll 4 downward, creating a stopper function that holds the sandpaper roll 4 in place and prevents the roll from moving unexpectedly and unraveling, or being pulled out unnecessarily. In addition, for example, if it is fixed to a work cart 5 as shown in Figure 3, it can be moved freely around the work site for use, further increasing convenience.

The present invention is not limited to the above-mentioned embodiment, but various modifications are possible within the scope of the claims and the scope of the embodiments, for example, making the support 2 into a rectangular column or pipe shape, changing the material to something other than metal, and combinations are possible, and these modifications and combinations are also included in the scope of the rights.

The sandpaper dispenser configuration of the present invention is also useful in various industrial fields that use rolls of adhesive tape, toilet paper, kitchen paper, decorative ribbons, strings, and bands, in addition to sandpaper.

1 Base 2 Support 3 Roll core holder 3a Through hole 4 Sandpaper 4a Roll core 5 Work cart 6 Box 7 Shaft 8 Partition plate 9 Guide plate 10 Slit

Claims (2)

This sandpaper dispenser is characterized in that it comprises a pair of support posts erected on a base, and a core holder that is mounted on the support posts so as to be vertically movable and serves as a support shaft for holding a roll of sandpaper so that it can roll, the core holder being a cylindrical tube with through holes formed at both ends through which the support posts pass vertically . 2. The sandpaper dispenser according to claim 1, further comprising a pair of support posts and a plurality of core holders corresponding to the support posts, the core holders being arranged in parallel .

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