JP3822627B1 - Anti-scatter cover - Google Patents

Abstract

An object of the present invention is to provide an anti-scattering cover that can be folded and expanded by a simple operation and can be kept small when not in use.
SOLUTION: A cloth body such as a net or cloth, a foldable arm portion, and an installation means are configured and joined to the installation means to support the upper portion of the cloth body at a predetermined height on the ground. An anti-scattering cover is provided, which can be held and can be folded and extended by operating the arm. An anti-scattering cover is provided which has a storage portion or a cover for storing the cover, and is reduced by operating the arm portion so that the cover can be stored in the storage portion or the cover.
[Selection] Figure 5

Description

        The present invention relates to an anti-scattering cover for preventing dust from being scattered at a garbage collection site or the like.

In recent years, in urban areas, it has become common for crows to tear garbage bags containing food waste, eat away leftover food, and scatter the contents of the bags on the street. These damages can be prevented by using a strong storage box or storage box, but the fact that the garbage collection area must be set at one corner of the road prevents the installation of this garbage storage box and storage box. In addition, the installation of an invisible trash can leads to neglect of internal dirt, and has defects that tend to cause unsanitary results such as odors. Therefore, a number of inventions have been made and applications have been filed in order to stop the scattering of garbage from birds and beasts such as crows.

Japanese Patent No. 3491262 The invention described in Japanese Patent No. 3491262 is “joining the point of the left and right edge frame of the net (1) and the point of the left and right edge frame of the net (2) larger than each other, Sewing while bringing together, a stick is attached to a part of the lower side of the edge frame of the net (1) to form a dust collection net, and a storage case for the dust collection net whose front lid opens downward is attached to a fixed column. The left and right walls of the upper part are provided with a groove that can be fixed by inserting a stick, and the upper part of the net (1) and the net (2) stitched to the lower part of the case is fixed. A garbage collection net with a storage case, characterized in that its length is longer than the height of the ground from the case.

      The invention described in Japanese Patent No. 3491262 is “attaching a stick to a part of the lower side of the rim of the net (1)” and “inserting a stick into the upper left and right walls of the storage case of the garbage collection net” There is a groove that can be made. " The bar is removed during use and hangs down from the storage case. If the rod is attached to a column or wall without hanging down and the net is supported by the rod, a part of the net is picked up, and it is easy to put garbage under the net. Become. Further, if a part of the rod is movably supported and the rod can be folded by an operation such as turning, the net can be made small and easy to collect. An anti-scattering cover is desired in which the rod is movably attached to a column or wall surface, and the net can be easily folded by operating the rod.

      In addition, one end of the rod is movably joined to the storage case, or the storage case is provided so as to cover the movably installed rod, thereby expanding the rod by an operation such as rotation. Then, the net is automatically expanded and handling becomes extremely easy. In addition, the net is automatically folded by an operation such as folding the bar, so that the storage becomes easier. An anti-scattering cover is desired in which the rod is movably joined and supported and folded to facilitate storage of the net.

Japanese Patent Application No. 2004-353781 The invention described in Japanese Patent Application No. 2004-353781 is an example in which the upper and lower cylinders constituted by cloth-like bodies are used as anti-scattering covers. As the amount increases, it protrudes toward the front, so you want to extend it sideways and reduce the amount stacked on top. However, if the side is too long, the installation location is limited or unsightly. An anti-scattering cover that is easy to fold and can be folded small when not in use is desired.

Japanese Patent Application No. 2005-143634 Japanese Patent Application No. 2004-369030 Example 5 and Example 6 are improved inventions of Japanese Patent Application No. 2005-143634 and Japanese Patent Application No. 2004-369030, which have a slot provided at the upper part of the cylindrical body, in the lower opening. This is an anti-scattering cover having a narrowing means. The curb prevents the invasion of crows, and the narrowing means at the lower opening prevents the invasion of birds and beasts from the hem of the cover and at the same time makes it easy to take out the accumulated contents. However, by itself, an anti-scattering cover installed on a narrow road or the like obstructs traffic. When used, the arm protrudes forward, making it easy to throw in the accumulated material. When not used, the arm 2 is folded and becomes an anti-scattering cover that shrinks as if sticking to the wall. This embodiment realizes it. ing.

Provide an easy-to-use anti-scatter cover that can be folded and expanded with simple operations and can be kept small when not in use.

By nesting the cloth-like body such as a net or cloth and the arm part, rotating the arm part at the connection part, or projecting the arm part from the support part such as a ring or a cylinder, etc. It is composed of a foldable rod-like arm part and an installation means that is a wall mounting member or a pillar, and the arm part is foldably connected to the installation means, and the cloth-like body is picked up by the arm part An anti-scattering cover characterized in that the cloth-like body is folded and extended along with folding and extension of the arm portion so that it can be attached and supported at a predetermined height on the ground. Provide.

        By nesting the cloth-like body such as a net or cloth and the arm part, rotating the arm part at the connection part, or projecting the arm part from the support part such as a ring or a cylinder, etc. It is composed of a foldable rod-like arm part and an installation means that is a wall mounting member or a pillar, and the arm part is foldably connected to the installation means, and the cloth-like body is picked up by the arm part An anti-scattering cover characterized in that the cloth-like body is folded and extended along with folding and extension of the arm portion so that the arm portion can be supported and held at a predetermined height on the ground. Therefore, it has the following effects.

Since the cover which is a cloth-like body is supported and held, it is easy to pick up the skirt of the cover and put an accumulation such as a garbage bag downward. In addition, when an input port is provided in the upper part of the cover, it is easy to create a space for collecting the input under the cover, and an easy-to-use anti-scatter cover can be configured. Further, since the arm portion is foldable, the cover connected to the arm portion can be folded at the same time by folding the arm portion, so that the work of folding the cover small and clearing can be performed efficiently.

        The present invention is to provide an anti-scattering cover that can be easily folded and can be kept small when not in use, and will be specifically described below with reference to the drawings. The term “foldable arm” as used in the claims and the specification includes the nesting of the arm, the rotation of the arm, the protrusion of the arm from the support, and the like. Thus, it is possible to change the length of the cloth-like body that is the main body of the anti-scattering cover attached to the arm part or to reduce the space occupied by the cloth-like body by operating the arm part. This means that it is a “arm part”. Further, the “cover” is a cover or a container for covering a small collection of the “covers with cloth-like bodies” of the present invention.

      FIG. 1 is a perspective view of the first embodiment, and is provided on an arm portion A21 (2) which is an arm portion 2 by picking up the middle of a cloth-like body 1 such as a net or cloth so that a space can be formed below. The arm A21 (2) is joined to the support A41 (4) via a rotatable connecting part A31 (3), and the support A41 (4) is installed on the hook A211. 5 is fixed to the pillar A51 (5). The installation means 5 can be replaced with a flat surface such as a wall. Since the arm portion 2 supports the cloth-like body 1, it is easy to pick up the bottom 11 of the cloth-like body 1 and put an accumulation 100 such as a garbage bag downward. Further, by rotating the arm portion 2 in the directions of arrows A61 (6) and B62 (6), which are arrows 6, the cloth-like body 1 attached to the arm portion 2 can be folded. Therefore, the work of folding the cloth-like body 1 into small pieces and putting it away can be performed efficiently. In addition, it is easy to create a space for accumulating the accumulation 100 under the cloth-like body 1, and an easy-to-use anti-scattering cover can be configured. The collection 100 is collected by rolling up the hem of the cloth-like body 1 or pulling up the cloth-like body 1 so that the cloth-like body 1 is folded.

      FIG. 2 is a perspective view of the second embodiment. The support part B42 (4) extends from the column B52 (5) toward the near side, a connecting part B32 (3) is provided at the tip, and an arm part B22 (2) is provided via the connecting part B32 (3). A hook A211 is provided at the tip of the connecting part B32 (3) and the arm part B22 (2), and the cloth-like body 1 is hooked on the hook A211. A sheet 71 (7), which is a cover 7 for the cloth-like body 1, is installed on the pillar B52 (5). The sheet 71 is a flat cloth-like body and is provided with a retaining hole 712 as a hanging means at the lower part, and a plurality of positions near the upper end are fixed to the pillar B52 (5) and are suspended in a plane. The When this embodiment is not used, the cloth-like body 1 hooked on the arm portion 2 is folded vertically when it is turned and folded in the directions of arrows A61 (6) and B62 (6). The vicinity of the position of about three quarters of the length of the folded cloth-like body 1 is lifted in the direction of the arrow C63 (6) with the hand and hung on the folded arm B22 (2). The arm portion B22 (2) and the sheet 71 (7) are pushed in.

      As described above, the cloth-like body 1 is folded in front of the sheet 71 and hung on the arm 2. By picking up the hem 711 of the sheet 71 (7) and hooking the hooking hole 712 as a hooking means on the hook B212, the cloth-like body 1 is wrapped by the sheet 71 and can maintain a certain aesthetic appearance. . It is also possible to omit the support part B42 (4) and fix the connecting part B32 (3) to the column B52 (5). In that case, the seat 71 (7) is attached to the back of the column B52 (5), and from below. The hook hole 712 is hooked on the hook B212 provided at the upper end of the column B52 (5) by turning forward. As described above, the cloth state 1 is covered with the sheet 71 and maintains its aesthetic appearance. In addition to the folded arm portion B22 (2), it is also possible to provide an arm portion 2 for latching. In that case, a sense of stability in operation can be obtained.

      FIG. 3 is a perspective view of the third embodiment. The third embodiment is substantially the same as the second embodiment, and the cover 7 in the second embodiment is replaced with a container 72 (7) having a lid 721 (7). The container includes one in which the sheet 71 (7) is sewn three-dimensionally. The support part B42 (4) is omitted, and the connecting part B32 (3) is attached to the side surface of the container 72 (7) or the column C53 (5). The method of use is the same as that of the second embodiment, and the arm B22 (2) is folded by rotating in the directions of the arrows A61 (6) and B62 (6), and the folded cloth-like body 1 is thereby folded. The arm B22 (2) and the container are lifted in the direction of the arrow C63 (6) with the hand at about three-quarters from the top of the length and hung on the folded arm B22 (2). 72 (7), the cloth-like body 1 is folded into a small size, and the lid 721 (7) is bound upward. The cloth-like body 1 can be completely covered, and the aesthetic appearance is maintained.

       FIG. 4 is a perspective view of the fourth embodiment. This embodiment is an improved invention of Japanese Patent Application No. 2004-353781, in which a tubular body 10 (1), which is a cloth-like body 1 and opens vertically, is hooked on an arm portion A21 (2). A plurality of back sides of the cylindrical body 10 are fixed to the arm portion 2, a ring A 81 (8) as an opening / closing means 8 is provided on the front side of the upper end portion of the cylindrical body 10, and provided on the arm portion A 21 (2). It hooks on the hook A211. The accumulation 100 is introduced by opening the upper end of the cylindrical body 10 by removing the ring A81 (8) and pulling it toward the front. The method of collecting the accumulation 100 is the same as that in the first embodiment. In this embodiment, the sheet 71 (7) and the container 72 (7), which are the cover 7, can be used, and the usage in this case is the same as in the second and third embodiments.

FIG. 5A is a perspective view of the fifth embodiment, and FIG. B is a partially enlarged view of a connecting portion between a column and an arm portion in FIG. The arm part C23 (2) is attached to the column D54 (5) so as to protrude forward by a pin which is a connecting part C33, and is connected so as to be rotatable in the vertical direction. The arm portion C23 (2) is supported by the support portion B42 in a state of protruding in the front direction when it is rotated in the direction of the arrow D64 (6) and can be folded. A hook C213 is disposed at the tip of the arm portion C23 (2), and the upper portion on the near side of the cylindrical body 10 is hooked. The upper part on the back side of the cylindrical body 10 is hooked on an arm portion D24 (2) that connects the left and right columns D54 (5).
Whereas the first to third embodiments expand the cloth-like body 1 in the lateral direction, the present embodiment is such that the front side and the back side of the tubular body 10 (1) are hooked on the arm C23 (2). Expand in the direction to form a three-dimensional space. When the arm portion C23 (2) is rotated upward, the cylindrical body 10 (1) moves toward the back and is crushed flatly. It is also possible to rotate the arm C23 (2) in the direction opposite to the direction indicated by the arrow D64 (6) so that the arm is hung down when not in use. In order to raise the arm upward only during use, the support part B42 can be configured to be flipped up, or the arm part C23 (2) can be rotated upward while avoiding the side of the support part B42. To connect.

The present embodiment is also an improved invention of Japanese Patent Application Nos. 2004-369030 and 2005-143634, and a “sag” 12 is provided in the insertion port 101 of the tubular body 10 that opens up and down as the cloth-like body 1. The presence of “Sagari” 12 prevents the invasion of birds and beasts such as crows. The “sag” 12 is obtained by bending the end of the ceiling portion 13 (1) of the cylindrical body 10 (1) at the start portion of the insertion port 101 and hanging it downward. The lower opening 102 is provided with a rope 103 as a narrowing means. One end of the rope 103 is connected to a ring C831 (83) which is a rope fixing ring 83 provided on a column D54 (5) as an installation means. The lower opening 102 is sandwiched from both sides through the ring B82 (8) for hooking the rope 103 provided near the periphery of the lower opening 102 to the tubular body 10, and the column D54 ( The other end is passed through a ring D832 (83) provided in 5) and hooked to a hook D214 provided in the upper part of the column D54 (5). When the rope 103 is removed from the hook D214, the lower opening 102, which is sandwiched between the ropes 103 and closed, opens. As a result, the accumulated article 100 inside the cylindrical body 10 is pushed out.

      FIG. 6A is a perspective view of the sixth embodiment, in which the arm portion D24 (2) is loosely fitted to the connecting portion D34 (3) provided on the column E55 (5) and installed so as to be able to enter and exit. A hook E215 is provided at the tip of the arm portion D24 (2), and the front side of the tubular body 10 (1) is hooked. The inner side of the cylindrical body 10 (1) is hooked on a hook or the like provided on the column E55 (5) or the connecting portion D34 (3). When the arm portion D24 (2) is pushed inward, the front side of the cylindrical body 10 (1) is moved in the back direction and is crushed in a plane. FIG. B shows a state in which the arm part D24 (2) is pushed forward through the connecting part D34 (3), and the arm part D24 (2) is pushed in the direction of the arrow E65 (6). It looks like Figure C.

      FIG. C shows a state in which the arm portion D24 (2) is pushed down while changing its direction toward the back direction (the direction of the arrow E65) and hangs down. FIG. D shows an example in which the connecting portion D34 (3) in FIGS. A to C is replaced with a connecting portion E35 (3). The connecting portion E35 (3) has an elongated horizontally long ring shape as shown in FIG. E, and at one end of the ring, presses near the base of the arm portion D24 (2) from above, and at the other end, the arm portion arm portion D24. The position from the tip is supported from below than the pressing position from above in (2). The arm portion D24 (2) is fixed by pressurizing the pressed contact by its own weight.

      The present embodiment is also an improved invention of Japanese Patent Application Nos. 2004-369030 and 2005-143634, and a “sag” 12 is provided in the insertion port 101 of the tubular body 10 that opens up and down, which is the cloth-like body 1. The presence of “sagari” 12 prevents the invasion of crows. A rod 104 as a narrowing means is arranged in the lower opening, and both ends of the rod 104 are hooked on a hook F216 provided on a column E55 (5) as an installation means. By removing the rod 104 from the hook F216, the lower opening is opened, and the accumulated article 100 inside the cylindrical body 10 is pushed out.

      FIG. 7A is a perspective view of the seventh embodiment, in which the end of the arm portion E25 (2) is bent downward, the end portion is used as the insertion portion 20 (2), and the column F56 (5) is provided. The arm portion E25 (2) is connected so as to be pivotable in the horizontal direction by being inserted and connected to the connecting portion F36 (3). At the time of use, the arm part E25 (2) protrudes toward the near side and stops, so that the cylindrical body 10 (1) hooked on the arm part E25 (2) forms a three-dimensional space. When it is not used, the arm portion E25 (2) is crushed and deformed in a plane by rotating it horizontally by approximately 90 degrees.

      FIG. B is a partially enlarged view of the connecting portion F36 (3). A protrusion 91 as a fixing means 9 is provided on the upper portion of the insertion portion 20 (2) to prevent the arm portion 2 from falling into the column 4 and to stop the horizontal rotation. A recess 92 for hooking the projection 91 is provided at the upper end of the connecting portion F36 (3), and the projection 91 is hooked. The fixing means 9 is a fixing means such as connecting pipes of the same thickness with pipes of different thicknesses and having a concavity and convexity at the joint, and can be rotated as necessary, and the fitted arm portion can be lowered. Any configuration can be used as long as it can prevent separation, and various forms can be realized.

      The present embodiment is also an improved invention of Japanese Patent Application No. 2005-143634, where a mounting portion 105 is provided on the upper portion of the tubular body 10 that opens up and down, which is the cloth-like body 1, and the stack 100 placed on the mounting portion 105 is provided. In this configuration, it drops down from the insertion port B106 provided at the end of the mounting portion 105 and is accumulated. The insertion port B 106, which is the end of the placement unit 105, is provided with a “sag” 12, and the presence of the “sag” 12 prevents the invasion of birds and beasts such as crows. “Sagari” 12 has a hanging curtain shape and closes the inlet B106. The front side of the mounting portion 105 is hooked on a hook G217 provided on the arm portion E25 (2), and the side end is sewn to the side wall of the cylindrical body 10 (1) so that it can be deformed and swung. For this reason, when the stack 100 is placed on the mounting portion 105, the back side of the mounting portion 105 sinks and becomes like a slide to feed the stack 100 into the cylindrical body 10. The gap between the “sag” 12 and the mounting portion 105 where the side end of the “sag” 12 can be sewn to the side wall of the cylindrical body 10 can be used as the insertion port B 106. 105 sinks, the “sag” 12 is pushed and deformed together, the inlet B106 opens, and the accumulation 100 falls down. The cylindrical body 10 (1) has a length that the lower end of the cylindrical body 10 (1) is bent in contact with the ground surface, and the accumulated object 100 steps on the bent cylindrical body 10 (1) from the inside. There is no invasion.

      FIG. 8 is a perspective view of the eighth embodiment. The column G57 (5) is used as the connecting portion G37 (3) as it is, and a concave portion A921 and a concave portion B922 are provided on the top of the column G57 (5), and the side surface of the concave portion is gently inclined to form a mountain shape between the two concave portions. The Yamagata portion 93 is raised. An insertion portion 20 (2) is formed at the lower end of the arm portion F26, and a protrusion 91 is provided at the upper end of the insertion portion 20 (2) in the same manner as in the seventh embodiment, and is fixed to the recess 92. The rotation of the part F26 is stopped. With this configuration, the lateral impact on the arm 2 is absorbed by the chevron 93. The upper part of the insertion part 20 (2) is bent in the horizontal direction to form an arm part F26. By providing the arm part G27 with the spacing member 28 in between and connecting the two arm parts 2, a gap is created between the two arm parts when bent, thereby preventing generation of shearing force or crushing force. Can do. The protrusion 91 can be omitted. In this case, the arm portion F26 is stopped by applying the base of the arm portion F26 to the concave portion 921 or the concave portion 922.

When the protrusion 91 is hooked on the recess A921, the arm portion F26 extends in the front direction, and when the protrusion 91 is hooked on the recess B922, the arm portion F26 is folded back. The tip of the arm part G27 can move from the front to the back or from the back to the front. By using the left and right arm parts G27, the cloth-like body 1 attached thereto can be moved in the back direction. Can be translated toward. A hook H218 is provided at the tip of the arm part G27, and a hook I219 is provided around the base of the arm part F26 or the side surface of the connecting part G37 (3). The front side of the tubular body 10 (1) is hooked on the hook H218, and the back side of the tubular body 10 (1) is hooked on the hook I219. A pair of left and right arms are provided, and the cylindrical body 10 is hooked and used. At the time of non-use, if the connection part by the pin 30 is moved inward, the front-end | tip side of the arm part G27, ie, the near side of the cylindrical body 10, can be sent back. Can be installed on a wall or the like when not in use, and can be installed for a scattering prevention cover suitable for protecting the accumulation of garbage such as crows by restoring the three-dimensional shape only when in use .

      FIG. 9 is a perspective view of the ninth embodiment. The rectangular frame-like body formed by the column H58, the upper arm portion H29, and the lower arm portion I210 being continuous is connected to each other by the pin 30 so as to be able to rotate or vibrate, thereby providing the installation means 5. The hooks J2110 are provided in the upper corners of the frame-like body by the number of corners (4 in this figure), and the cloth-like body 1 is hooked three-dimensionally. One hook K2111 is attached to the frame body 1 closer to the center than the attachment position of the hook J2110. The cloth-like body 1 is provided with an inlet C (107). Since the three-dimensionally hooked cloth-like body 1 restrains the pillars H58 to attract each other, the position and overall shape of the pillars H58 are stabilized. The accumulation 100 is thrown into the inside (lower) of the cloth-like body 1 that is three-dimensionally hooked from the slot C (107).

When not used, the arm portion 29 and the arm portion 29 are rotated in the directions of arrows F66 and G67 so that the arm portions 29 overlap each other. At this time, since the interval between the pillars H58 changes, the cloth-like body 1 hung on one hook J2110 per one frame-like body is removed and replaced with the hook K2111. In this embodiment, the folding work after use is somewhat troublesome, but the three-dimensionally hooked cloth-like body 1 is restrained so that the pillars H58 are attracted to each other and the overall shape is stable, and the structure is extremely It has the advantage of being simple and easy to manufacture. One of the upper arm portion H29 and the lower arm portion I210 in this embodiment can be omitted. Further, it is possible to leave only one column H58 and omit the other. The one column H58 is fixed to the floor, joined to one of the upper arm portions H29 at the end portion, and the other arm. Even if the portion H29 and the pin 30 are connected so as to be able to vibrate, the same effect as in the present embodiment can be obtained. The same effect can be obtained by dividing the frame-like body into two parts and connecting the U-shaped column H58, the upper arm portion H29, and the lower arm portion I210 continuous body by a plurality of pins 30. can get.

1 is a perspective view of Example 1. FIG. 6 is a perspective view of Example 2. FIG. 10 is a perspective view of Example 3. FIG. 10 is a perspective view of Example 4. FIG. FIG. A is a perspective view of Example 5. FIG. FIG. B is a partially enlarged view of a connecting portion. FIG. A is a perspective view of Example 6. FIG. FIG. B shows a state where the arm B21 (2) is pushed out toward the front. FIG. C shows a state in which the arm 2 is pushed in the back direction and hangs down. FIG. D is an example in which the connecting part B is replaced with a connecting part C. FIG. A is a perspective view of Example 7. FIG. FIG. B is a partial enlarged view of a connecting portion C. 10 is a perspective view of Example 8. FIG. 10 is a perspective view of Example 9. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cloth-like body 10 Tubular body 100 Accumulated material 101 Input port 102 Lower opening part 103 Rope 104 Rod 105 Mounting part 106 Input port B
107 slot C
DESCRIPTION OF SYMBOLS 11 Cloth body bottom 12 Sag 13 Ceiling part 2 Arm part 20 Insertion part 21 Arm part A
211 Hook A
212 Hook B
213 Hook C
214 Hook D
215 Hook E
216 Hook F
217 Hook G
218 Hook H
219 Hook I
2110 Hook J
2111 hook K
22 Arm B
23 Arm C
24 Arm D
25 Arm E
26 Arm F
27 Arm G
28 Spacing material 29 Arm H
210 Arm I
3 Connecting part 30 Pin 31 Connecting part A
32 Connection B
33 Connection C
34 Connection D
35 Connection E
36 Connection F
37 Connection G
4 Supporting part 41 Supporting part A
42 Support B
5 Installation means 51 Pillar A
52 Pillar B
53 Pillar C
54 Pillar D
55 Pillar E
56 Pillar F
57 Pillar G
58 Pillar H
6 Arrow 61 Arrow A
62 Arrow B
63 Arrow C
64 Arrow D
65 Arrow E
66 Arrow F
67 Arrow G
7 Cover for cloth body 71 Sheet 711 Bottom of sheet 712 Retaining hole 72 Container 721 Cover 8 Opening / closing means 81 Ring A
82 Ring B
83 Rope fixing ring 831 Ring C
832 Ring D
9 Fixing means 91 Protrusion 92 Recess 921 Recess A
922 Recess B
93 Yamagata

Claims (1)

By nesting the cloth-like body such as a net or cloth and the arm part, rotating the arm part at the connection part, or projecting the arm part from the support part such as a ring or a cylinder, etc. It is composed of a foldable rod-like arm part and an installation means that is a wall mounting member or a pillar, and the arm part is foldably connected to the installation means, and the cloth-like body is picked up by the arm part An anti-scattering cover characterized in that the cloth-like body is folded and extended along with folding and extension of the arm part so that the arm part can be supported and held at a predetermined height on the ground.

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