# US 2019/0314908 A1 · Tabletop cutting device

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- Number: US 2019/0314908 A1
- Document ID: US20190314908A1
- Status: Published application
- Kind: A1
- Application number: 16/340,557
- Filed: 2017-11-08
- Published: 2019-10-17
- Earliest claimed: 2016-11-11
- Assignees: Makita Corporation
- Applicants: Makita Corporation
- Inventors: Syuji AOYAMA; Yukinori SUZUKI; Goh YAMAMURA
- Web page: https://patentgrep.com/patent/US20190314908A1

## CPC

- B23D 45/04: with a circular saw blade or the stock carried by a pivoted lever
- B27B 5/29: Details; Component parts; Accessories
- B23D 45/048: {the saw blade being adjustable according to angle of cut}
- B23D 45/14: for cutting otherwise than in a plane perpendicular to the axis of the stock, e.g. for making a mitred cut
- B27B 5/20: the saw blade being adjustable according to depth or angle of cut; Radial saws, i.e. sawing machines with a pivoted radial arm for guiding the movable carriage
- B27B 5/36: Mounting for swivelling or tilting the circular saw blade {, e.g. using an adjustable mounting (slotting or mortising machines B27F5/02)}
- B23D: PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR (making toothed gears or the like B23F; cutting metal by applying heat locally B23K; arrangements for copying or controlling B23Q)
- B27B: SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR (saws specially adapted for pruning or debranching A01G3/08; sawing apparatus specially adapted for felling trees A01G23/091; features not restricted to a particular type of wood saw B23D, e.g. attaching saw blades B23D51/00; machine tool frames, beds, pillars or like members, in general B23Q1/01)

## Abstract

An operation knob is attached to one end of a transmission rod. The transmission rod is located in a slide bar supporting a cutting device main body so as to be slidable in a front-to-rear direction. A pulley of a belt transmission mechanism is joined to the other end of the transmission rod, and a click mechanism is arranged around a portion of the pulley. The click mechanism provides a tactile sensation (e.g. click feeling or feeling of moderation) and improves operability of the operation knob.

## Claims

### Claim 1

A tabletop cutting device, comprising:
a cutting device main body;
an operation knob that is configured to fix an inclination angle of the cutting device main body when the operation knob is rotated; and
a click mechanism that produces a tactile sensation when the operation knob is rotated.

### Claim 2 (depends on 1)

The tabletop cutting device according to claim 1, wherein:
a rotational operation of the operation knob is transmitted to a left/right inclination shaft via a transmission rod positioned away from the left/right inclination shaft,
the left/right inclination shaft is configured to support the cutting device main body so as to incline the cutting device main body in a left-to-right direction, and
the click mechanism is arranged around a radial axis of the transmission rod.

### Claim 3 (depends on 2)

The tabletop cutting device according to claim 2, further comprising,
a slide bar that supports the cutting device main body so as to be slidable in a front-to-rear direction, wherein:
the operation knob is rotatably supported at a front end of the slide bar,
the transmission rod is positioned in the slide bar,
the rotational operation of the operation knob is transmitted to the left/right inclination shaft via a belt transmission mechanism that is interposed between the transmission rod and the left/right inclination shaft, and
the click mechanism comprises an engagement portion that is provided in a portion of a pulley on a side of the transmission rod.

### Claim 4

A tabletop cutting device, comprising:
a cutting device main body slidably supported by a slide bar attached to a main body supporting portion such that the cutting device main body may be inclined in a left-to-right direction with respect to a table on which a workpiece is placed;
a left/right inclination shaft in the main body supporting portion configured to fix a left/right inclination position of the cutting device main body with respect to the table;
an operation knob that is configured to fix an inclination angle of the cutting device main body when the operation knob is rotated, the operation knob being provided at a first end of a transmission rod that is located in the slide bar;
a belt transmission mechanism interposed between a second end of the transmission rod and the left/right inclination shaft, the belt transmission mechanism comprising a pulley and a belt; and
a belt pressing portion that presses the belt towards the pulley.

### Claim 5 (depends on 4)

The tabletop cutting device according to claim 4, wherein,
the belt pressing portion is located at a belt outlet portion of the pulley.

### Claim 6 (depends on 4)

The tabletop cutting device according to claim 4, wherein,
the belt pressing portion is arranged in a vicinity of the pulley.

### Claim 7 (depends on 4)

The tabletop cutting device according to claim 4, wherein,
a plurality belt pressing portions are arranged at a different places.

### Claim 8 (depends on 4)

The tabletop cutting device according to claim 4, further comprising a second belt pressing portion that is arranged further away from the pulley than the belt pressing portion and arranged contacting the belt.

### Claim 9 (depends on 4)

The tabletop cutting device according to claim 4, wherein the belt transmission mechanism is configured to transmit a rotation operation of the operation knob to the left-right inclination shaft.

### Claim 10 (depends on 4)

The tabletop cutting device according to claim 4, further comprising an idler located on an opposite side of the belt to the belt pressing portion.

### Claim 11 (depends on 6)

The tabletop cutting device according to claim 6, wherein the belt pressing portion is arrange closer to the pulley than to the left/right inclination shaft.

### Claim 12 (depends on 1)

The tabletop cutting device according to claim 1, wherein the tactile sensation is a click feeling.

### Claim 13 (depends on 1)

The tabletop cutting device according to claim 1, wherein the click mechanism comprises:
an engagement protrusion; and
a plurality of engagement recesses.

### Claim 14 (depends on 13)

The tabletop cutting device according to claim 13, wherein the plurality of engagement recesses are located within a rear surface of a pulley.

### Claim 15 (depends on 13)

The tabletop cutting device according to claim 13, wherein the plurality of engagement recesses are located within a front surface of a pulley.

### Claim 16 (depends on 13)

The tabletop cutting device according to claim 13, wherein the plurality of engagement recesses are located within an outer peripheral surface of a pulley.

### Claim 17 (depends on 1)

The tabletop cutting device according to claim 1, further comprising a left/right inclination shaft about which the cutting device main body rotates.

### Claim 18 (depends on 17)

The tabletop cutting device according to claim 17, wherein the operation knob is located nearer to the cutting device main body than to the left/right inclination shaft.

### Claim 19 (depends on 17)

The tabletop cutting device according to claim 17, wherein:
the click mechanism is connected to the operation knob via a transmission rod, and
the click mechanism is connected to the left/right inclination shaft via a transmission belt.

### Claim 20 (depends on 17)

The tabletop cutting device according to claim 17, wherein the operation knob is located nearer to the click mechanism than to the left/right inclination shaft.
