Broom

Abstract

Provide a broom that can ensure sufficient strength even when sweeping chips and can easily sweep narrow gaps. 【Solution means】 The broom 1 consists of a brush 5, a link mechanism 4, an exterior 2, and a dial 3 that connects to the link mechanism 4. The link mechanism 4 is composed of a parallel crank mechanism 6 and a drive mechanism 7. 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 exterior 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 a brush 5 is implanted at the lower end 63a. The drive mechanism 7 includes a disk 71 fixed to the dial 3 and a drive link 72. The disk 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 is easy to use for cleaning both wide and narrow areas, and particularly to a broom whose tip angle of the brush can be changed.

Background Art

[0002] Brooms are known that are intended to clean not only large floor areas but also corners of floors and corners of stairs. According to Patent Document 1, a broom has a portion called a base, and a portion called a flocked surface is provided on the lower surface of the base. The flocked surface is composed of a cleaning head formed by implanting fibers necessary for sweeping the floor surface and a handle connected to this cleaning head. The flocked surface of the base in the above cleaning head is divided into a main flocked area with a long area length and an auxiliary flocked area with a short area length located on one end side of the main flocked area. Soft fibers having flexibility necessary for sweeping dust on the floor surface are implanted in the main flocked area, and hard fibers having rigidity sufficient to scrape off dust adhering to the floor surface are implanted in the auxiliary flocked area. The auxiliary flocked area is inclined so as to be gradually outward toward the end side with respect to the main flocked area, and the tip surface of the hard fibers is also inclined so as to be gradually outward toward the end side of the auxiliary flocked area.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, according to Patent Document 1, since it is a fiber having the flexibility necessary for sweeping dust on the floor surface and the rigidity that can scrape it off, when cleaning a machine tool that produces a large amount of metal chips, the chips get entangled with each other and the weight increases. Therefore, with a head that combines soft fibers in the main tufting area in the center and hard fibers in the auxiliary tufting area at the ends, the strength is insufficient and it cannot be swept sufficiently. In addition to machine tools, at places such as the rail part of a sliding door and the chalk tray of a blackboard, the tip of the hair touches a large surface and cannot reach and touch in front of the place where cleaning is desired.

[0005] An object of the present invention is to provide a broom that can ensure sufficient strength even when sweeping metal chips and can easily sweep narrow gaps.

Means for Solving the Problems

[0006] The broom of the present invention includes a brush, a link mechanism capable of changing the inclination of the brush, an exterior that supports the link mechanism, and a dial that protrudes from the exterior and is connected to the link mechanism. The link mechanism includes a parallel crank mechanism that holds the brush and a drive mechanism that drives the parallel crank mechanism. The parallel crank mechanism includes opposing first and second parallel links and a driven link that connects the first and second parallel links. The driven link includes a first pin rotatably connected to the first parallel link and a second pin rotatably connected to the second parallel link. The brush is fixed to the first pin. The drive mechanism includes a disk fixed to the dial and a drive link rotatably connected to the disk via a third pin located outside the center of the disk. By fixing the drive link and the second parallel link, when the dial is turned, the disk rotates and the drive link rotates with respect to the disk, and when the second parallel link moves in the axial direction, the driven link and the brush are inclined, and the broom can change the end angle of the brush.

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

[0008] The base end of the brush is held between a pair of the first parallel links. By holding the base end portion of the brush between a pair of the first parallel links, strength is ensured and brush replacement is made possible.

Advantages of the Invention

[0009] According to the broom of this invention, the angle of the brush end can be made variable, so by making it an acute angle, the gaps and sawdust grooves of a machine tool that produces metal chips can be easily cleaned.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Best Mode for Carrying Out the Invention

[0011] (Broom 1) Figures 1 to 9 show Broom 1 of this invention. Broom 1 consists of a brush 5, a link mechanism 4 capable of changing the inclination of the brush 5, an exterior 2 that supports the link mechanism 4, and a dial 3 that protrudes from the exterior 2 and is connected to the link mechanism 4.

[0012] (Exterior 2) The exterior 2 has a proximal end 2a to which a handle 21 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) In particular, referring to FIGS. 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 opposing first parallel links 61 and second parallel links 62, 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 and located in the vicinity of the open end 2b of the exterior 2, and the second parallel link 62 is substantially parallel to the first parallel link 61 and is located on the proximal end 2a side. In particular, referring to FIG. 7, the first parallel link 61, the second parallel link 62, and the driven link 63 are each composed of a plate bar member. The first parallel link 61 and the second parallel link 62 are each composed of a pair of plate bar members and are arranged at intervals in the thickness direction.

[0015] The first parallel link 61 is connected inside the body 22 of the exterior 2 via the first pin 64 (see Fig. 4). More specifically, four pin holes 61a are formed in the first parallel link 61, and the first pins 64 are inserted into each of them. 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. Although there are four first pins 64 and pin holes 61a, two or more are sufficient.

[0016] Referring particularly to Fig. 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 the first pins 64. The upper end 63b of the driven link 63 is rotatably connected to the pair of second parallel links 62 via the second pins 65. The second pins 65 are not fixed to the body 22 and the cover surface 23.

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

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

[0019] The upper end portion 72a of the disk 71 and the drive link 72 are rotatably connected via a third pin 73. The disk is provided with a pin hole 71a into which the third pin 73 is inserted (see FIG. 6). The pin hole 71a is formed on the outer peripheral side of the disk 71 with respect to the center, that is, at a position that does not coincide with the center. Similarly, the upper end portion 72a of the drive link 72 is also provided with a pin hole into which the third pin 73 is inserted. Referring to FIGS. 8 and 9, the lower end portion 72b of the drive link 72 is connected to the second parallel link 62 via a fourth pin 74. The drive link 72 and the second parallel link 62 maintain a certain angle. Here, the drive link 72 and the second parallel link 62 intersect at a substantially right angle and maintain this angle.

[0020] (Operation description) Starting from the position where the brush 5 in FIG. 8 is not tilted, rotate the dial 3 and rotate the connected disk 71 in the direction of arrow X. When the disk 71 rotates in the direction of arrow X, the drive link 72 slides in the same direction as the disk 71 via the third pin 73. Since the drive link 72 and the second parallel link 62 maintain a certain angle and are fixed by the fourth pin 74, the second parallel link 62 moves in the direction of arrow Y in FIG. 9 while maintaining parallelism with the first parallel link 61. The second parallel link 62 and the first parallel link 61 are connected to the driven link 63 by a second pin 65 and a first pin 64, forming a parallel link mechanism. As the second parallel link 62 moves in the axial direction, i.e., in the direction of arrow Y while maintaining parallelism with the first parallel link 61, the driven link 63 oscillates and the brush 5 tilts. The exterior 2 is provided with stoppers 24 and 25 having different shapes. When the driven link 63 contacts these stoppers 24 and 25, the tilt angle of the brush 5 is restricted.

[0021] Since the brush 5 can be tilted as described above, narrow gaps can also be easily cleaned. Also, when it is desired to clean a wide area, the brush 5 can be used without tilting it as shown in FIG. 8. By using the brush 5 without tilting it in this way, metal chips can be swept away using the tip of the brush 5. When metal chips are swept away using the side of the brush, the strength of the brush decreases and the chips cannot be collected sufficiently, but this problem can be solved in the present invention. The brush 5 is fixed to the lower end portion 63a of the driven link 63, and since the brush 5 and the driven link 63 are made of the same component, when the brush wears out, it can be replaced as a whole part.

Explanation of Reference Numerals

[0022] 1 Broom 2 Exterior 2a Base end 2b Open end 21 Handle 22 Body 23 Cover surface 24 Stopper 25 Stopper 3 Dial 4 Link mechanism 5 Brush 6 Parallel crank mechanism 61 First parallel link 61a Pin hole 62 Second parallel link 63 Driven link 63a Lower end portion 63b Upper end portion 64 First pin 65 Second pin 7 Drive mechanism 71 Disk 71a Pin hole 72 Drive link 72a Upper end portion 72b Lower end portion 73 Third pin 74 Fourth pin 75 Center pin

Claims

1. A brush, a link mechanism capable of changing the inclination of the brush, an exterior that supports the link mechanism, and a dial that protrudes from the exterior and is connected to the link mechanism, and the link mechanism includes a parallel crank mechanism that holds the brush and a drive mechanism that drives the parallel crank mechanism, the parallel crank mechanism includes opposing first and second parallel links and a driven link that connects the first and second parallel links, the driven link includes a first pin rotatably connected to the first parallel link and a second pin rotatably connected to the second parallel link, and the brush is fixed to the first pin, the drive mechanism includes a disk fixed to the dial and a drive link rotatably connected to the disk via a third pin located outside the center of the disk, by fixing the drive link and the second parallel link, when the dial is turned, the disk rotates, the drive link rotates relative to the disk, and the second parallel link moves in the axial direction, so that the driven link and the brush are inclined, and the end angle of the brush can be made variable. A brush.

2. The first parallel link and the second parallel link are a pair of plate bar members spaced apart in the thickness direction and arranged side by side, The brush according to claim 1, wherein the driven link is located between the first parallel link and the second parallel link.

3. The brush according to claim 1, wherein the proximal end of the brush is held between the pair of first parallel links.

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