Ball guard

Abstract

To provide a ball protective guard capable of improving efficiency of maintenance work through configuring a whole or a part of a net part covering an air conditioner to be openable / closable in accordance with a maintenance level performed on the air conditioner.SOLUTION: A ball protective guard is provided with: a base frame 1 fixed on a ceiling surface 70 so as to surround an installation position of an air conditioner 50; a net part 3 integrated with a barrier frame 2 rotatably attached on the base frame with a hinge 7; and fastening members 11 placed on at least the other side in which the base frame not provided with the hinge 7 and the barrier frame face each other so as to straddle the base frame and the barrier frame, and fastening the base frame and the barrier frame. An opening 4 is formed in a part of the net part 3, and a subnet 5 is openably / closably attached to the opening.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a ball guard that covers a heating and cooling device in order to protect the device mounted on a ceiling or wall in, for example, a school gymnasium. [Background technology]

[0002] For example, in school gymnasiums and public indoor sports facilities, heating and cooling devices are installed on the ceilings and walls, and since gymnasiums and sports facilities have larger indoor spaces than ordinary houses, larger heating and cooling devices are installed. These gymnasiums and sports facilities are also used relatively frequently as venues for ball games such as volleyball and basketball, and the balls used in these games hit the heating and cooling devices, resulting in damage and breakdown of the devices. In order to prevent such problems from occurring, a ball guard that covers the front surface of the air conditioner has been proposed, as disclosed in Patent Document 1. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-148357 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the case of the ball guards used to protect the air conditioners in gymnasiums and the like, the air conditioners are large, so the ball guards themselves are large, and since the ball guards are subject to the impact of balls in ball games, they must be made of a relatively strong metal material, which inevitably makes the overall weight of the ball guards large.

[0005] On the other hand, the air conditioning devices installed in gymnasiums and the like are used for a longer period of time than air conditioners used in ordinary homes, and therefore regular maintenance is essential. This maintenance can be divided into maintenance that inspects the entire heating and cooling system, which is performed at relatively long intervals of about years, and maintenance that includes cleaning filters, which is performed relatively short-term, such as on a few months basis. Therefore, during maintenance such as filter cleaning, which is performed relatively frequently, opening, closing, and attaching and detaching the entire ball guard, which has a large overall weight, not only reduces work efficiency but also places a heavy burden on the maintenance worker.

[0006] This invention was made under the circumstances described above, and aims to provide a ball guard that is configured so that the entire net covering the heating and cooling unit can be selectively opened and closed in whole or in part depending on the level of maintenance performed on the heating and cooling unit, and that allows the entire net unit or part to be easily opened and closed. [Means for solving the problem]

[0007] The ball guard of the present invention, which has been made to solve the above-mentioned problems, is a ball guard that protects a heating and cooling device installed on a ceiling or wall surface, and is equipped with a base frame that is fixed to the ceiling or wall surface so as to surround the installation position of the heating and cooling device, a fence frame that is formed to match the external shape of the base frame and is rotatably arranged relative to the base frame, a net portion that is fixed to the fence frame and is capable of covering the heating and cooling device, a plurality of hinges that are arranged to straddle the base frame and the fence frame on one opposing side of the base frame and the fence frame to enable the fence frame to be rotated, and fastening members that are arranged to straddle the base frame and the fence frame on at least another opposing side of the base frame and the fence frame on which the hinges are not provided, and fasten the base frame and the fence frame, and an opening is formed in part of the net portion, and a subnetwork is attached to the opening so as to be able to be opened and closed.

[0008] In this case, it is desirable that the subnetwork which opens and closes the opening formed in part of the net section is rotatably attached to the net section by a plurality of connectors which each connect one side of the subnetwork along the edge of the opening, and that the free pivoting end side of the subnetwork is provided with a subnetwork locking body which fastens the free end side to the net section.

[0009] The hinge has a pin side member having a pin protruding in one direction, and a tube side member having a tube portion into which the pin can be inserted, and in the multiple hinges provided on opposing sides of the base frame and the fence frame, the pin of the pin side member of one hinge and the pin of the pin side member of the other hinge are arranged to protrude in opposing directions.

[0010] With the ball guard described above, when performing maintenance such as cleaning the filter of the air conditioner, which is carried out at relatively short intervals, the maintenance can be performed by opening and closing the net that covers the opening in part of the net that covers the entire air conditioner, thereby improving work efficiency and reducing the labor burden on the maintenance worker. In addition, during maintenance to inspect and service the entire heating and cooling unit, which is carried out at relatively long intervals (years or so), the net portion covering the entire heating and cooling unit can be easily opened and closed by multiple hinges on one opposing side of the base frame and fence frame that rotatably support the fence frame relative to the base frame.

[0011] Furthermore, the multiple hinges are retractable hinges in which the pin of one hinge and the pin of the other hinge protrude in opposite directions, and by removing only the pin of one of the hinges and sliding the fence frame in one direction, the net portion attached to the fence frame can be easily removed or attached to the base frame. Therefore, even when removing or attaching the net portion which is integrated with the fence frame, which is relatively heavy, the operation is easy, thereby contributing to ensuring the safety of the work. Effect of the Invention

[0012] With the ball guard of the present invention, it is possible to selectively open and close the entire net portion or part of the net portion depending on the level of maintenance performed on the heating and cooling equipment, and it is possible to provide a ball guard that allows the net portion or part of it to be easily opened and closed. [Brief description of the drawings]

[0013] [Figure 1] 1 is a front view of the ball guard of the present invention as viewed from the air conditioning / heating device side. [Diagram 2] FIG. 2 is a bottom view of the ball guard shown in FIG. [Diagram 3]FIG. 2 is a rear view of the ball guard shown in FIG. [Figure 4] FIG. 2 is a front view showing the individual configuration of the net portion of the ball guard shown in FIG. [Diagram 5] 5 is a front view showing the individual configuration of a subnetwork to be attached to the net section shown in FIG. 4. [Figure 6] FIG. 13 is a side view of the net portion in an entirely open state. [Figure 7] This is a side view of the subnetwork opened from the net section. [Figure 8] 1A and 1B are plan views showing the hinge in an exploded state, and 1C is a plan view showing the hinge in an assembled state. [Figure 9] FIG. 2 is a plan view showing a part of an example of the arrangement of a plurality of hinges provided in the ball guard of FIG. [Figure 10] 2 is a plan view of a catch clip provided on the ball guard of FIG. 1. [Figure 11] 1 shows a connector for attaching a subnet to a net section, where (A) is an oblique view and (B) is a side view seen from the end face side. [Figure 12] The figure shows a locking body that is subnetwork-fastened to a net section, (A) being a front view and (B) being a side view. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the ball guard according to the present invention will be described with reference to the drawings. The ball guard 30 shown in the figure is used to protect the air conditioning / heating equipment 50, shown by dashed lines, attached to the ceiling surface 70 of a gymnasium, for example, from the underside, thereby protecting the air conditioning / heating equipment 50 from the collision of balls during ball games, etc.

[0015] In the example shown in the figure, the air conditioning and heating unit 50 is installed on a ceiling surface 70 along a vertical wall surface 71 as shown in FIG. 6, and a base frame 1 is fixed to the ceiling surface 70 so as to surround the installation position of the air conditioning and heating unit 50. This base frame 1 is formed in a U-shape so as to surround the front outlet side of the air conditioner 50 and its left and right sides, and this base frame 1 is attached to the ceiling surface 70 using bolts, nuts, etc. not shown. In addition, a fence frame 2 formed in a U-shape is provided to match the external shape of the base frame 1 described above, and this fence frame 2 is rotatably attached to the base frame 1 by a number of hinges 7, which will be described later.

[0016] In other words, the fence frame 2 is attached to the base frame 1 by four hinges 7 (see Figures 1 and 2), described below, which are arranged at approximately equal intervals along one side of the central part formed in a U-shape, so that both leg sides of the fence frame 2, which are formed in a U-shape, can be opened and closed relative to the base frame. A net portion 3 shown as a separate component in FIG. 4 is attached to the fence frame 2 so as to cover the air conditioning and heating device 50 from below.

[0017] In addition, as shown in Figure 4, the net portion 3 has a rectangular opening 4 formed in the lower half of the lower side covering the heating and cooling device 50 from below, and a flat subnetwork 5 shown in Figure 5 is attached to this opening 4 so as to be able to be opened and closed. In other words, the rectangular opening 4 provided in the net portion 3 corresponds to the installation position of the above-mentioned filter placed in the air conditioning and heating device 50, and during maintenance such as cleaning the filter of the air conditioning and heating device 50, the above-mentioned subnetwork 5 attached to the rectangular opening 4 is opened.

[0018] The net unit 3, together with the subnetwork 5 covering the opening 4, is provided with a lower net covering the underside of the air conditioner 50, a front net covering the outlet side of the air conditioner 50, and left and right nets covering the left and right sides of the air conditioner 50, when the net unit 3 is attached to the ceiling surface 70. Each of these nets is made of, for example, aluminum alloy round bars, forming a relatively large rectangular mesh, and the overall outer shell of the net unit 3 forms a rectangular parallelepiped shape.

[0019] On the other hand, the opposing U-shaped legs of the base frame 1 and the fence frame 2, which do not have the above-mentioned hinge 7, are provided with a plurality of catch clips (fastening members) 11 for fixing the fence frame 2 to the base frame 1. In this embodiment, catch clips 11 are attached to two locations near the tip of each of the U-shaped legs of base frame 1 and fence frame 2, as shown in Figs. 1 to 3 and the like. The specific configuration of the catch clip 11 will be described later.

[0020] FIG. 8 shows an example of a hinge 7 that rotatably attaches the fence frame 2 to the base frame 1. As shown in Figures 8(A) and (B), this hinge 7 is a removable hinge that is made up of a pin side member 8 and a tube side member 9 that are separable from each other along the longitudinal direction of the pin. The pin side member 8 is made up of an attachment plate 8a with an attachment hole for a screw or the like, a pivot part 8b, and a pin 8c that protrudes from the pivot part 8b. Meanwhile, the tube side member 9 is made up of an attachment plate 9a with an attachment hole for a screw or the like, and a pivot tube part 9b (tube part) into which the pin 8c can be inserted. Therefore, when the hinge 7 shown in Figure 8(A) is assembled, it becomes the configuration shown in Figure 8(C).

[0021] Figures 8(A) and 8(B) differ in the direction in which the pin 8c protrudes from the pivot portion 8b. By arranging each of them so that they straddle the base frame 1 and the fence frame 2 as shown in Figure 9, it is possible to prevent the net portion 3, which is integral with the fence frame 2, from accidentally falling off the base frame 1. That is, the configuration in Fig. 8(A) is a left-hand hinge and the configuration in Fig. 8(B) is a right-hand hinge, with the left-hand hinge located at the far left as shown in Fig. 9, and all the others being right-hand hinges. With this, when cleaning the net part 3, etc., the net part 3 integrated with the fence frame 2 can be easily removed from the base frame 1 by sliding it sideways by removing only the mounting plate 8a that fixes the left-hand pin 8c.

[0022] Next, Figure 10 shows the external configuration of a catch clip (fastening member) 11 that is attached to two locations near the tip of each of the legs of the base frame 1 and fence frame 2, which are formed in a U-shape, so as to straddle the base frame 1 and the fence frame 2. This catch clip 11 is composed of a locking body 12 which is fixed to the base frame 1 with a screw and has a U-shaped curved claw portion 12a, and a clip portion 13 which is attached to the fence frame 2 and whose short shaft 13b at the tip can be hooked onto the curved claw portion 12a by raising the operating lever 13a.

[0023] The clip portion 13 is provided with a pair of springs 13c, and the short shaft 13b of the clip portion 13 is locked to the claw portion 12a via the springs 13c. With this, when the locking body 12 is locked by the clip portion 13, the biasing force of the springs 13c firmly connects the fence frame 2 to the base frame 1 without loosening.

[0024] Therefore, the fence frame 2 to which the net portion 3 is attached is attached to the base frame 1 so as to be able to open and close by multiple (four) hinges 7 arranged along one longitudinal side, and is fastened to the base frame 1 near the respective tips of both legs of the fence frame 2, which are formed in a U-shape, by the aforementioned multiple catch clips 11. As a result, even if the air conditioner 50 receives a strong impact from a ball hitting it in a ball game, the net portion 3 can protect the air conditioner 50, and the net portion 3 which is integrated with the fence frame 2 can be reliably prevented from falling.

[0025] 11(A) and (B) show a subnet connector 15 having a hinge function for mounting a subnet 5 in an openable and closable manner to a rectangular opening 4 provided in a net portion 3. FIG. This connector 15 is assembled by inserting a bolt (not shown) into a through hole 15d that penetrates the three members, with a square pipe 15c interposed between the L-shaped member 15a and the plate member 15b. It is preferable that the connector 15 is integrally formed into a U-shape by welding the L-shaped member 15a and the plate member 15b, so that the mechanical strength of the connector 15 is ensured.

[0026] 11(B), a slightly thick round bar 3a that forms the opening edge of the net part 3 and a slightly thin round bar 5a that forms one longitudinal side of the subnetwork 5 are inserted and connected to each other on the axially long hollow path formed by being surrounded by the three members. Therefore, the connector 15 is fixed to the net part 3 side having the thick round bar 3a, and is attached so that one side of the subnetwork 5 having the thin round bar 5a opens and closes the opening 4 provided in the net part 3. The subnetwork connectors 15 are arranged at three locations on the lower base of the net portion 3 on the opposite side to the position where the hinges 7 are arranged, as shown in, for example, FIGS.

[0027] The free rotating end of the subnet 5 that opens and closes the opening 4 provided in the net portion 3 is provided with a subnet locking body 20 that fastens the free rotating end to the net portion 3. A member called a coin lock can be used as this locking body 20. This coin lock 20 is attached by using a coin lock mounting plate 25 attached by welding or the like to the free rotation end side of the subnetwork 5, as shown in Figures 1 and 5, and screwing it into a through hole formed in this plate 25.

[0028] FIG. 12 shows an example of a coin lock 20 as a locking body of a subnet. This coin lock 20 comprises a cylindrical case 20a with a flange on the front and a male thread on the circumferential surface, a nut 20b that screws onto the male thread of this case 20a, a rotating body 20c with a flathead groove on the front side of the case 20a, and a lock plate 20d attached to the rear end side of the rotating body 20c. The rotating body 20c and the lock plate 20d attached thereto are attached to the case 20a so as to be rotatable within a range of 90 degrees with respect to the case 20a, as shown in FIG. 12(A).

[0029] The coin lock 20 is attached by utilizing a through hole in a coin lock mounting plate 25 attached to the subnetwork 5, in a state where it is clamped by the flange on the front side of the case 20a and a nut 20b that screws into it. Then, by inserting a screwdriver or the arc-shaped edge of a coin into the flat groove of the rotating body 20c on the front side of the coin lock 20 and rotating the rotating body 20c, the lock plate 20d attached to the rear end side of the rotating body 20c can be rotated within a range of 90 degrees.

[0030] FIG. 1 shows a state in which the lock plate 20d is engaged with a round bar at the edge of the opening of the net portion 3, thereby causing the subnet 5 to close and lock the opening 4 of the net portion 3. In this state, the lock plate 20d of each coin lock 20 is rotated 90 degrees to unlock the subnet 5. As a result, as shown in Figure 7, the subnet 5 acts to open the opening 4 provided in the net portion 3 via the connector 15 that functions as a hinge.

[0031] 1, a narrow support plate 27 is attached, for example by welding, along the opening 4 of the net part 3. This support plate 27 functions as a stopper to prevent the free rotating end side of the subnet 5 from entering inside the net part 3 when the subnet 5 closes the opening 4 of the net part 3.

[0032] As is clear from the above explanation, according to the above-described embodiment, during maintenance to inspect and service the entire heating and cooling equipment, which is performed at relatively long intervals of years, the net portion 3 covering the entire heating and cooling equipment 50 can be opened as shown in Figure 6 by removing the catch clip 11 serving as a fastening member, and using the multiple hinges 7 that rotatably support the fence frame 2 relative to the base frame 1. In this case, by using a retractable hinge in which the pin of the pin side member of one hinge and the pin of the pin side member of the other hinge protrude in opposite directions, it is possible to prevent the net portion 3 which is integrated with the heavy shelf frame 2 from falling off, thereby ensuring the safety of maintenance work.

[0033] On the other hand, during maintenance such as cleaning the filters of the air conditioning and heating unit 50, which is performed at relatively short intervals, the subnet 5 can be opened by unlocking the locking body (coin lock) 20 of the subnet 5 that covers the opening 4 provided in part of the net portion 3, as shown in Figure 7. Therefore, with the above-mentioned ball guard 30, it is possible to selectively open or close the entire net portion 3 or only a part of the net portion (subnet 5) depending on the level of maintenance to be performed on the heating and cooling equipment, thereby improving work efficiency and reducing the labor burden on maintenance workers.

[0034] In the above-mentioned embodiment, a ball guard 30 was described that is intended for an air conditioning or heating unit 50 mounted on a ceiling surface 70, but this can also be applied to a ball guard 30 that covers an air conditioning or heating unit 50 mounted on a vertical wall surface 71, and similar effects can be obtained. In addition, in the above-described embodiment, a catch clip is used as the fastening member 11 on the shelf frame 2 side relative to the base frame 1, and a coin lock is used as the locking body 20 of the subnetwork, but these are not limited to a catch clip and a coin lock, and fastening members and locking bodies of other configurations can also be used. Furthermore, in the above-described embodiment, an example has been given of a form in which one heating and cooling device 50 is covered, but the present invention is not limited to this, and it can also be applied as a ball guard 30 that covers multiple arranged heating and cooling devices 50 with a single net portion 3. [Explanation of symbols]

[0035] 1 Base frame 2 Fence Frame 3. Internet Department 4 aperture 5. Subnets 7 Hinge 8 Pin side member 8c pin 9 Cylinder side member 9b Pivot tube part (tube part) 11 Catch clip (fastening member) 15 Concatenation of Subnets 20 Coin lock (subnet locking device) 30 Ball guard 50 Heating and cooling equipment 70 Ceiling surface 71 Vertical Wall

Claims

1. A ball guard for protecting a heating and cooling device installed on a ceiling or wall, A base frame is fixed to the ceiling surface or the wall surface so as to surround an installation position of the heating and cooling device; A fence frame formed to match the outer shape of the base frame and rotatably provided with respect to the base frame; A net portion that is fixed to the fence frame and can cover the heating and cooling device; A plurality of hinges are provided across the base frame and the fence frame on opposing sides of the base frame and the fence frame to enable the fence frame to rotate; A fastening member is provided that is arranged across the base frame and the fence frame on at least one other opposing side of the base frame and the fence frame where the hinge is not provided, and fastens the base frame and the fence frame; A ball guard characterized in that an opening is formed in a part of the net portion, and a subnetwork is attached to the opening in an openable and closable manner.

2. A subnetwork for opening and closing the opening formed in a part of the net section is rotatably attached to the net section by a plurality of connectors each connecting one side of the subnetwork along an edge of the opening, and 2. The ball guard according to claim 1, wherein a subnet locking member is provided on the free pivot end side of the subnet for fastening the free end side to the net portion.

3. The hinge includes a pin-side member having a pin protruding in one direction, and a tube-side member having a tube portion into which the pin can be inserted, A ball guard as described in claim 1 or 2, characterized in that in the multiple hinges provided on opposing sides of the base frame and the fence frame, the pin of the pin side member of one hinge and the pin of the pin side member of the other hinge protrude in opposing directions.

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