broom

Abstract

This broom provides sufficient strength to clean up wood chips and can easily clean even narrow gaps. [Solution] The broom 1 consists of a brush 5, a linkage mechanism 4, an outer casing 2, and a dial 3 connected to the linkage mechanism 4. The linkage mechanism 4 consists of a parallel crank mechanism 6 and a drive mechanism 7, and the parallel crank mechanism 6 includes a first parallel link 61, a second parallel link 62, and a driven link 63. The first parallel link 61 is connected to the inside of the body 22 of the outer casing 2 via a first pin 64. The upper end 63b of the driven link 63 is rotatably connected to a pair of second parallel links 62 via a second pin 65, and the brush 5 is planted on the lower end 63a. The drive mechanism 7 includes a disc 71 fixed to the dial 3 and a drive link 72. The disc 71 and the upper end 72a of the drive link 72 are rotatably connected via a third pin 73. The lower end 72b of the drive link 72 is connected to the second parallel link 62 via a fourth pin 74.

Description

[Technical Field]

[0001] The present invention relates to a broom that facilitates cleaning of both large spaces and narrow spaces, and particularly relates to a broom capable of changing the angle of the tip end of a brush. [Background Art]

[0002] Brooms aimed at cleaning not only large floor surfaces but also corners of floors and corners of stairs are known. According to Patent Document 1, a broom has a portion called a base, and a portion called a bristle-planting surface is provided on the lower surface of the base. The bristle-planting surface is composed of a cleaning head formed by planting fibers necessary for sweeping a floor surface, and a handle connected to the cleaning head. The bristle-planting surface of the base in the cleaning head is divided into a main bristle-planting region having a large region length, and an auxiliary bristle-planting region having a small region length located on one end side of the main bristle-planting region. Soft fibers having flexibility necessary for sweeping dust on the floor surface are planted in the main bristle-planting region, and hard fibers having rigidity enough to scrape off dust adhering to the floor surface are planted in the auxiliary bristle-planting region. The auxiliary bristle-planting region is inclined such that it gradually faces outward toward the end side relative to the main bristle-planting region, and the bristle tip surface of the hard fibers is also inclined such that it gradually faces outward toward the end side of the auxiliary bristle-planting region. [Background Art Documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Unexamined Patent Application Publication No. 2005-111055 [Summary of the Invention] [Problem to be Solved by the Invention]

[0004] However, according to Patent Document 1, the fibers are designed to have the flexibility necessary to sweep dust from the floor surface and the rigidity to scrape it off. Therefore, when cleaning machine tools that produce a large amount of metal chips, the chips become entangled and their weight increases. Consequently, a head with a combination of soft fibers in the main flocking area in the center and hard fibers in the auxiliary flocking area at the ends lacks sufficient strength to sweep effectively. In addition to machine tools, there are also areas like sliding door rails and chalk trays on blackboards where the surface area the bristles touch is large, and the bristles hit the area before reaching the area to be cleaned, thus missing the target spot.

[0005] The objective of this invention is to provide a broom that can ensure sufficient strength when cleaning up metal chips and can also easily clean narrow gaps. [Means for solving the problem]

[0006] The broom of this invention comprises a brush, a link mechanism capable of changing the inclination of the brush, an exterior supporting the link mechanism, and a dial protruding from the exterior and connected to the link mechanism, wherein the link mechanism comprises a parallel crank mechanism holding the brush and a drive mechanism driving the parallel crank mechanism, wherein the parallel crank mechanism comprises opposing first parallel links and second parallel links and a driven link connecting the first parallel link and the second parallel link, wherein the driven link comprises a first pin rotatably connected to the first parallel link and a second pin rotatably connected to the second parallel link, the brush being fixed to the first pin, and the drive mechanism comprises a disc fixed to the dial and a drive link rotatably connected to the disc via a third pin located outside the center of the disc. A broom in which, by fixing the drive link and the second parallel link, when the dial is turned, the disc rotates and the drive link rotates relative to the disc, and the second parallel link moves in the axial direction, causing the driven link and the brush to tilt, and the end angle of the brush to be variable.

[0007] The first parallel link and the second parallel link are a pair of plate-rod members spaced apart in the thickness direction, and the driven link is located between the first parallel link and the second parallel link. By using a pair of plate-rod members for the first and second parallel links, strength can be ensured and smooth operation can be achieved.

[0008] The base end of the brush is characterized by being held between a pair of the first parallel links. By holding the base end of the brush between the pair of first parallel links, strength is ensured and the brush can be replaced. [Effects of the Invention]

[0009] According to this invention, the angle of the brush end can be made variable, so by making it acute, metal chips can be easily cleaned from gaps and dovetail grooves in machine tools. [Brief explanation of the drawing]

[0010] [Figure 1] A diagram showing the usage state of this invention, a perspective view of the brush in a state where it is not tilted. [Figure 2] This figure is similar to Figure 1, but is a perspective view of the brush in an inclined state. [Figure 3] This diagram shows the inside of a broom, viewed from the opposite side to Figures 1 and 2. [Figure 4] Figure 3 is an exploded perspective view. [Figure 5] A diagram showing the fixing positions of the first parallel link and the exterior. [Figure 6] A diagram showing a dial supported by the exterior and a disc fixed to the dial. [Figure 7] Diagram illustrating the link mechanism. [Figure 8] This figure is similar to Figure 7, but is a front view showing the brush in a non-tilted state. [Figure 9] This figure is similar to Figure 8, but is a front view of the brush in an inclined position. DESCRIPTION OF EMBODIMENTS

[0011] (Broom 1) Figures 1 to 9 show the broom 1 of the present invention. The broom 1 includes a brush, a link mechanism capable of changing the inclination of the brush, an exterior that supports the link mechanism, and a dial protruding from the exterior and connected to the link mechanism.

[0012] (Exterior 2) The exterior 2 has a base end 2a to which a handle is attached, and an open end 2b to which the brush 5 is attached, and covers the link mechanism 4 with a body 22 and a cover surface 23.

[0013] (Link mechanism 4) Referring particularly to Figures 3 and 4, the link mechanism 4 is composed of a parallel crank mechanism 6 that holds the brush 5, and a drive mechanism 7 that drives the parallel crank mechanism 6.

[0014] (Parallel crank mechanism 6) The parallel crank mechanism 6 includes a first parallel link 61 and a second parallel link 62 that face each other, and a driven link 63 that connects the first parallel link 61 and the second parallel link 62. The first parallel link 61 is substantially parallel to the open end 2b of the exterior 2 and is located in the vicinity thereof, and the second parallel link 62 is substantially parallel to the first parallel link 61 and is located on the base end 2a side. Referring particularly to Figure 7, the first parallel link 61, the second parallel link 62 and the driven link 63 are each formed of a plate bar member. The first parallel link 61 and the second parallel link 62 are each constituted by a pair of plate bar members, and are arranged side by side at an interval in the thickness direction.

[0015] The first parallel link 61 is connected to the inside of the body 22 of the outer casing 2 via the first pin 64 (see Figure 4). More specifically, the first parallel link 61 has four pin holes 61a, into which the first pin 64 is inserted. One end of the first pin 64 is fixed to the body 22, and the first parallel link 61 can be inserted from the other end. The other end of the first pin 64 is sealed by the cover surface 23. There are four first pins 64 and pin holes 61a, but two or more would suffice.

[0016] Referring particularly to Figure 7, the driven link 63 is held between a pair of first parallel links 61 and a pair of second parallel links 62. The lower end 63a of the driven link 63 is rotatably connected to the pair of first parallel links 61 via a first pin 64. The upper end 63b of the driven link 63 is rotatably connected to a pair of second parallel links 62 via a second pin 65. The second pin 65 is not fixed to the body 22 or the cover surface 23.

[0017] The base end of the brush 5 is implanted on the lower end 63a of the driven link 63. The brush 5, together with the driven link 63, is rotatably connected between a pair of first parallel links 61 via a first pin 64. Brush 5 can be replaced along with the driven link 63.

[0018] (Drive mechanism 7) The drive mechanism 7 comprises a pair of discs 71 fixed to the dial 3 and a pair of drive links 72 connecting the discs 71 to the parallel crank mechanism 6. The pair of discs 71 are located outside the second parallel link 62, and the drive links 72 are located inside the discs 71. The pair of discs 71 are fixed to each other at their center via a central pin 75, and the central pin 75 is fixed to the dial 3. Therefore, the pair of discs 71 rotate as the dial 3 rotates.

[0019] The disc 71 and the upper end 72a of the drive link 72 are rotatably connected via a third pin 73. The disc has a pin hole 71a into which the third pin 73 is inserted (see Figure 6). The pin hole 71a is formed on the outer circumference of the disc 71, i.e., not coincide with the center. Similarly, the upper end 72a of the drive link 72 also has a pin hole into which the third pin 73 is inserted. Referring to Figures 8 and 9, the lower end 72b of the drive link 72 is connected to the second parallel link 62 via the fourth pin 74. The drive link 72 and the second parallel link 62 maintain a constant angle. Here, the drive link 72 and the second parallel link 62 intersect at approximately a right angle and maintain this angle.

[0020] (Operation instructions) From the position where the brush 5 in Figure 8 is not tilted, rotate the dial 3 to rotate the connecting disc 71 in the direction of arrow X. As the disc 71 rotates in the direction of arrow X, the drive link 72 slides in the same direction as the disc 71 via the third pin 73. Since the drive link 72 and the second parallel link 62 are fixed at the fourth pin 74 while maintaining a constant angle, the second parallel link 62 moves in the direction of arrow Y in Figure 9 while remaining parallel to the first parallel link 61. The second parallel link 62 and the first parallel link 61 are connected to the driven link 63 by the second pin 65 and the first pin 64, thus forming a parallel link mechanism. As the second parallel link 62 moves in the axial direction of arrow Y while remaining parallel to the first parallel link 61, the driven link 63 oscillates and the brush 5 tilts. The outer casing 2 is equipped with stoppers 24 and 25 of different shapes, and the driven link 63 contacts these stoppers 24 and 25 to limit the inclination angle of the brush 5.

[0021] As described above, the brush 5 can be tilted, making it easy to clean even narrow gaps. Furthermore, when cleaning a wider area, the brush 5 can be used without tilting, as shown in Figure 8. By using the brush 5 without tilting it, metal chips can be cleaned using the tip of the brush 5. When metal chips are cleaned with the belly of the brush, the brush's strength decreases, making it difficult to collect chips effectively. However, this problem is solved in the present invention. The brush 5 is fixed to the lower end 63a of the driven link 63, and since the brush 5 and the driven link 63 are the same part, the entire part can be replaced when the brush wears out. [Explanation of Symbols]

[0022] 1 broom 2. Exterior 2a proximal end 2b open end 21 patterns 22 Body 23 Cover surface 24 Stopper 25 Stopper 3 Dials 4 Link Mechanism 5 brushes 6. Parallel crank mechanism 61. First Parallel Link 61a Pinhole 62 Second Parallel Link 63. Driven link 63a Lower end 63b Upper end 64. Pin 1 65. Pin 2 7. Drive mechanism 71 Discs 71a Pinhole 72 Drive link 72a Upper end 72b Bottom end 73. Pin 3 74 Pin 4 75 Center pin

Claims

1. A brush and A linkage mechanism that allows the angle of the brush to be changed, The exterior supporting the link mechanism, It comprises a dial that protrudes from the exterior and is connected to the link mechanism, The link mechanism comprises a parallel crank mechanism for holding the brush and a drive mechanism for driving the parallel crank mechanism. The parallel crank mechanism comprises opposing first parallel links and second parallel links, and a driven link connecting the first parallel link and the second parallel link. The driven link comprises a first pin rotatably connected to the first parallel link and a second pin rotatably connected to the second parallel link, with the brush fixed to the first pin. The drive mechanism comprises a disc fixed to the dial and a drive link rotatably connected to the disc via a third pin located outside the center of the disc. By fixing the aforementioned drive link and the second parallel link, A broom in which, when the dial is turned, the disc rotates and the drive link rotates relative to the disc, and the second parallel link moves in the axial direction, thereby tilting the driven link and the brush, and making the end angle of the brush variable.

2. The first parallel link and the second parallel link are a pair of plate rod members spaced apart in the thickness direction, The broom according to claim 1, characterized in that the driven link is located between the first parallel link and the second parallel link.

3. The broom according to claim 1, characterized in that the base end of the brush is held between a pair of the first parallel links.

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