Mounting hardware
The mounting bracket with a groove and opposing surfaces securely attaches flat objects to cylindrical parts, addressing insecure attachment issues and facilitating efficient cutting operations.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- 小川 俊之
- Filing Date
- 2025-12-26
- Publication Date
- 2026-07-09
AI Technical Summary
Conventional fixtures for attaching flat objects to cylindrical parts require multiple fastening members and are cumbersome, leading to insecure attachment and difficulty in aligning the object with the generatrix of the cylindrical part.
A mounting bracket composed of three pieces with a groove larger than the cylinder diameter and opposing surfaces arranged in opposite directions, allowing secure attachment by sandwiching the object between these surfaces and using bolts and nuts to clamp it onto the cylinder.
The solution enables simple and secure attachment of flat objects to the generatrix of cylindrical parts, preventing tangling and ensuring firm fixation, while facilitating efficient cutting operations.
Smart Images
Figure 2026116272000001_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a fixture for attaching a flat object such as a blade to a cylinder (the cylindrical part).
Background Art
[0002] Conventionally, a fixture (for attaching a flat object such as a blade to a cylinder) is a structure that is hollowed out or bent along a plate with the same diameter as the cylinder that is attached in two parts to sandwich the cylinder, and the opposite surfaces are slightly shortened in the opposite direction and holes are drilled, and then fastened with fastening members such as screws, bolts, and nuts for attachment.
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] This had the following drawbacks. When attaching a flat object to the cylindrical part of the attachment portion, since the fixture and the attachment object are attached separately, fastening members such as screws had to be tightened firmly for each. Flat objects such as blades cannot be firmly attached. Also, if one tries to attach firmly, it becomes a large-scale operation. It cannot be simply and firmly attached to the generatrix on the cylindrical part of the attachment portion. When the fixture is attached to the cylindrical part of the attachment portion, the flat object to be attached simultaneously is not further firmly compressed and fixed. When attaching a vine cutting fixed blade to a mower, it cannot be simply and firmly attached by tilting a hook blade (2) etc. in the direction where the rotation of the rotary cutting blade (6) slips from the position of the fixture (3) on the generatrix of the cylindrical part of the attachment portion, which is effective for cutting the winding weeds. This invention was made to eliminate the above drawbacks. [Means for solving the problem]
[0005] The mounting bracket (3) is made of three pieces, as shown in Figures 3 and 5. The bracket has a groove that is slightly larger than the diameter of the mounting cylinder, forming a curved surface as shown in Figure 3(12). The opposing surfaces in Figure 3(13) are positioned in opposite directions, with the groove slightly shorter beyond the diameter of the mounting cylinder. A flat object, such as a cutting tool, is placed between the opposing surfaces shown in Figure 3(11). Bolts are passed through the holes shown in Figures 3 and 4(8), nuts are attached, and the bracket is tightened to secure it. The bracket is then clamped onto the cylinder using the surface shown in Figure 3(12), and bolts are passed through the holes shown in Figures 3(9) and 3(10), and nuts are tightened to secure it. (Note that threading the opposing holes eliminates the need for nuts, and fasteners such as screws can be used instead of bolts.) The present invention is a mounting device having the above configuration. [Effects of the Invention]
[0006] When you want to attach a flat object to the generatrix of a cylindrical section, the mounting section has the effect of securely attaching the flat object to the generatrix of the cylindrical section using a simple mounting device and method.
[0007] Attaching the mounting bracket to the cylindrical part of the mounting section has the effect of further compressing and securing the flat object being attached at the same time.
[0008] The mounting bracket (3) [Figures 1 and 2(3), Figures 3-5] prevents vines from getting tangled and is effective in cutting vines that wrap around the brush cutter. It is mounted on the generatrix of the cylindrical part of the brush cutter's mounting section, tilted in a direction that allows the rotating blade to easily cut vines.
[0009] Furthermore, it has the effect of easily and securely attaching flat objects, not just bladed tools, to cylindrical parts.
[0010] The mounting fixture (3) of the present invention creates a groove that is slightly larger than the diameter of the cylindrical mounting part and is a curved surface as shown in Figure 3(12), and the opposing surfaces in Figure 3(13) are arranged in opposite directions so that the groove beyond the diameter of the cylindrical mounting part is slightly shorter. By placing a flat object such as a blade between the opposing surfaces in Figure 3(11), passing a bolt through the hole and tightening it with a nut, and then placing the cylindrical mounting part inside Figure 3(12), passing a bolt through the holes in Figure 3(9) and(10) and tightening it with a nut, the fixture is attached to the cylindrical mounting part, and at the same time, the cylindrical mounting part side of the part that holds the flat object such as a blade in Figure 3(11) is firmly tightened, which has the effect of securely fixing the flat object such as a blade. [Brief explanation of the drawing]
[0011] [Figure 1] This is a side view of the tip of the main pipe showing an embodiment of a brush cutter in which a vine cutting blade is attached using the mounting device of the present invention. [Figure 2] This is a front view of the tip of the main pipe showing an embodiment of a brush cutter in which a vine cutting blade is attached using the mounting device of the present invention. [Figure 3] This is an open perspective view of the mounting fixture (3) of the present invention. Note that the circular parts represent holes and are assumed to penetrate perpendicularly to the surface. [Figure 4] This is an open side view of the mounting fixture (3) of the present invention. [Figure 5] This is an open top view of the mounting fixture (3) of the present invention. [Figure 6] This is a top view showing only the mounting fixture (3) of the present invention attached to the cylindrical portion of the mounting part, with other parts omitted. [Modes for carrying out the invention]
[0012] The mounting bracket (3) is attached by inserting a flat object such as a blade into the surface (11) in Figure 3, passing a bolt through the hole (8), and tightening it with a nut, then inserting the surface (12) into the mounting position on the cylindrical part, passing a bolt through the holes (9) and (10), and tightening it with a nut to fix it to the cylindrical part.
[0013] The fixture (3) of the present invention creates a groove that is slightly larger in diameter than the cylinder of the mounting portion and is a curved surface as shown in Fig. 3 (12), and makes the surface facing Fig. 3 (13) in the opposite direction such that the groove beyond the diameter of the mounting portion cylinder is slightly shorter. By sandwiching a flat object such as a blade between the facing surfaces of Fig. 3 (11), passing a bolt through its hole and tightening with a nut to sandwich the cylindrical portion of the mounting portion inside Fig. 3 (12), and passing a bolt through the holes of Fig. 3 (9) and (10) and tightening with a nut, it is attached to the cylindrical portion of the mounting portion. At the same time, the side of the mounting portion cylinder of the surface (11) of the sandwiching portion for flat objects such as the blade in Fig. 3 (11) is firmly tightened to firmly fix flat objects such as the blade.
[0014] Drill a hole with a diameter slightly larger than the cylindrical portion of the mounting portion in the center of a square thick plate. Cut it into two parts by cutting at two parallel positions slightly away from the central connection line at the center of the parallel lines at the ends of the plate. Cut one of the two cut parts at a right angle from the center of the further cut line and further divide it into two parts, making a total of three parts. Make holes to sandwich flat objects to be attached on the facing surfaces of the two smaller parts and connect them with screws, bolts, nuts, etc. Make holes in the cylindrical portion of the mounting portion so that the two parts connected through the drilled holes and the remaining one part can sandwich and connect it, and fix it with screws, bolts, nuts, etc. Cut off the corners at the vertices of the two sides that do not touch the curves of the two smaller parts and process them so that the vertical and horizontal screws and bolts do not interfere.
[0015] Or thicken the fixture so that the positions of the holes can be shifted so that the vertical and horizontal screws and bolts do not interfere, and shift the positions of the holes.
[0016] For flat objects such as blades to be sandwiched on the surface (11) of Fig. 3, it is preferable to use those with holes opened at the position of the hole (8) or to open holes.
[0017] The members connected with the above screws, bolts, nuts, etc. may be fastening members that can obtain the same effect.
Explanation of Reference Numerals
[0018] 1 Straight blade 2 Hook blade 3. Mounting hardware 4 Gear Case 5 Push metal fittings 6 Rotary cutting blades 7 Main pipe 8. Through-holes for screws and bolts for attaching and fastening flat objects. 9,10 Mounting section: Through-holes for mounting screws and bolts on the cylindrical portion. 11. Flat object clamping section 12 Mounting part, cylindrical section, clamping part 13. The cylindrical part of the mounting section that is sandwiched when brought close together, and the flat object to be attached, are simultaneously compressed and fixed to the surface.
Claims
1. A mounting device that, when attached to the cylindrical part of the mounting section, compresses the flat object to be attached, allowing for a secure and firm attachment.
2. The mounting fixture according to claim 1, wherein a flat object is attached to the generatrix of the cylindrical mounting portion.
3. A mounting bracket that securely fastens a flat object by sandwiching it between the mounting bracket surface (11), passing a screw or bolt through the hole (8), and tightening it with a nut, and by sandwiching the mounting bracket surface (12) between the mounting part cylindrical section, passing a screw or bolt through the holes (9) and (10), and tightening it with a nut, thereby firmly compressing the surface (12) side of the mounting bracket surface (11) and securely fastening the flat object to be mounted.
4. The mounting device (3) is designed to create a groove (12) which is a curved surface that is slightly larger than the diameter of the cylindrical part of the mounting section, and the mating surfaces (9) and (10) are arranged in the opposite direction so that the groove beyond the diameter of the mounting section is slightly shorter. The mounting device is designed to attach a flat object to be attached by sandwiching it between the mating surfaces (11), passing a bolt through the hole and tightening it with a nut, and then sandwiching the mounting section inside (12), passing a bolt through the hole (9) and (10) and tightening it with a nut, thereby attaching it to the cylindrical part of the mounting section and simultaneously tightening the cylindrical part of the flat object to be attached (11) firmly on the mounting section side, so that the flat object to be attached is securely fixed.
5. The mounting fixture according to claims 1 to 4, wherein a flat object is attached to the generatrix of the cylindrical mounting portion.
6. A square, thick plate is drilled with a hole in the center that is slightly larger in diameter than the cylindrical mounting section. The plate is then cut in half at two parallel points, a short distance from the central connecting line at the center of the parallel lines at the edges of the plate. One of these halves is then cut again at a right angle from the center of the cutting line, dividing it into two more halves, resulting in three pieces. A flat object is placed between the two smaller pieces facing each other, and holes are drilled to connect them, allowing them to be joined with screws, bolts, or nuts. The two connected pieces and the remaining piece are then used to sandwich the cylindrical mounting section, and holes are drilled to connect them, allowing them to be fixed with fasteners such as screws, bolts, or nuts. The corners of the two smaller pieces that do not touch the curve are cut off to prevent interference between the vertical and horizontal screws and bolts.
7. The mounting bracket according to claim 6, which, by making the mounting bracket thicker, creates space to shift the position of the screw / bolt holes, preventing interference without cutting off the corners.