Long bolt holding base and filter mounting frame using the same

Abstract

To provide a pedestal for holding a long bolt that can easily replace a long bolt and yet can stably hold the long bolt, and a filter fitting frame using the same.SOLUTION: A pedestal for holding a long bolt, which attachably and detachably holds a long bolt in an L-shape having a folded end part, comprise (1) a first folded part 4 in which an opening through which the folded end part of the long bolt is inserted is formed, (2) a second folded part 5, positioned adjacently to the first folded part 4, in which a side-surface opening part 5a, through which the folded end part is rolled along a surface of a pedestal main body 10a to make the long bolt face in an inserting direction thereof and is moved along the inserting direction, is formed, (3) a second air gap part 8 having a length equal to at least a diameter of the long bolt, in the inserting direction of the long bolt, and (4) a third folded part 9 acting as a stopper for the long bolt.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a pedestal for holding a long bolt used for a filter mounting frame for attaching an air filter used in an air conditioner or the like, and a filter mounting frame using the same.

Background Art

[0002] In an air conditioner, when outside air is taken into a room, the outside air is air-conditioned in the room through dust removal, temperature and humidity control, and blowing. A filter device is installed on the suction port side or the discharge port side of the duct (gas flow path) of the air conditioner.

[0003] As shown in FIG. 11, the filter device has a pre-filter presser frame 102 disposed on the front surface via a medium-performance filter 101 in a filter mounting frame 100, and a pre-filter 103 is attached to the front surface of the pre-filter presser frame 102. The pre-filter presser frame 102 is fixed by inserting a long bolt 104 extending from the filter mounting frame 100 into a bolt insertion hole provided in the pre-filter presser frame 102 and tightening with a wing nut 105.

[0004] FIG. 12 shows the filter mounting frame 100. As shown in the figure, the rear ends of a plurality of long bolts 104 are fixed to a pedestal 106 on the inner surface of the filter mounting frame 100. The pedestal 106 is fixed to the inner wall surface of the filter mounting frame 100 by welding or the like. In some cases, the long bolt 104 may be welded to the pedestal 106. However, when the air conditioner is used in a high-temperature and high-humidity environment or is affected by outside air such as rainwater, and the long bolt 104 corrodes over time and rusts, the long bolt 104 cannot be replaced, and only the entire filter mounting frame 100 has to be replaced.

[0005] In order to solve such problems, Patent Document 1 describes attaching a plurality of supports and fixtures to the inner surface of the casing of the filter mounting frame to removably hold the long bolts for fixing the filter. Patent Document 2 describes fixing a long bolt mounting bracket to the inner wall surface of a filter mounting frame, which has a receiving portion for inserting the bent end of an L-shaped long bolt into the inner surface of the filter mounting frame casing, and an elastic tongue portion capable of elastically receiving the non-bent portion of the long bolt. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Utility Model Registration No. 2572815 Gazette [Patent Document 2] Publication number 4-33938 [Overview of the project] [Problems that the invention aims to solve]

[0007] Patent Document 1 requires multiple support and fasteners to secure the long bolt, meaning all of these fittings must be prepared, and the installation process is time-consuming and complicated. Furthermore, stable fastening is difficult if the installation precision is not high. Patent Document 2 does not have the problems of Patent Document 1 because it fixes the long bolt with a single long bolt mounting bracket, but because the long bolt is held in place using the elasticity of the elastic tongue portion, there are problems with stability when vibration or shock is applied.

[0008] Therefore, the object of the present invention is to provide a long bolt holding base that allows for easy replacement of long bolts and stably holds long bolts, and a filter mounting frame using the same. [Means for solving the problem]

[0009] The long bolt holding base of the present invention is a base for detachably holding an L-shaped long bolt having a bent end, In order along the insertion direction of the long bolt, A first bent portion having an opening formed for inserting the bent end of a long bolt, A second bent portion is located adjacent to the first bent portion, and has a side opening for rotating the bent end along the surface of the base body to face the long bolt in the insertion direction and for moving along the insertion direction, In the insertion direction of the long bolt, a second gap portion having a length equal to at least the diameter of the long bolt, It includes a third bent section that acts as a stopper for the long bolt.

[0010] The filter mounting frame of the present invention is equipped with the long bolt holding base described above. [Effects of the Invention]

[0011] The long bolt holding base of the present invention (hereinafter sometimes simply referred to as "base") has the effect of allowing long bolts to be easily replaced and to hold long bolts stably. [Brief explanation of the drawing]

[0012] [Figure 1] This is a perspective view showing a pedestal according to the first embodiment of the present invention. [Figure 2] The pedestal shown in Figure 1 is further illustrated, with (a) being a front view (shown upside down), (b) a top view, and (c) a side view. [Figure 3] This is a front view showing an example of a long bolt in the present invention. [Figure 4] (a) to (e) are explanatory diagrams showing the procedure for attaching long bolts to the base shown in Figures 1 and 2. [Figure 5] This is a perspective view showing a pedestal according to a second embodiment of the present invention. [Figure 6] Figure 5 further shows the base, where (a) is a front view (shown upside down), (b) is a top view, and (c) is a side view. [Figure 7] This is a perspective view showing a pedestal according to a third embodiment of the present invention. [Figure 8] Figure 7 further shows the base, where (a) is a front view (shown upside down), (b) is a top view, and (c) is a side view. [Figure 9] The pedestal according to the fourth embodiment of the present invention is shown. (a) is a front view (however, it is shown upside down), (b) is a plan view, and (c) is a side view. [Figure 10] The pedestal according to the fifth embodiment of the present invention is shown. (a) is a front view (however, it is shown upside down), (b) is a plan view, and (c) is a side view. [Figure 11] It is a perspective view showing the usage state of the filter mounting frame. [Figure 12] It is a perspective view showing the filter mounting frame with the long bolt attached.

Embodiments for Carrying Out the Invention

[0013] Hereinafter, the pedestal for holding the long bolt and the filter mounting frame using the same according to the embodiments of the present invention will be described based on the drawings.

[0014] (First Embodiment) The pedestal 10 according to the first embodiment of the present invention is shown in FIGS. 1 to 4. The pedestal 10 shown in FIGS. 1 and 2 is attached to the opening end 106a on the inner wall surface side of the filter mounting frame 100, similarly to the pedestal 106 shown in FIG. 12. The pedestal 10 is usually made of a metal plate such as a steel plate and is fixed to the filter mounting frame 100 by the rivet 2. Instead of the rivet 2, burring may be performed or welding may be performed. In particular, when riveting or burring is performed, the pedestal 10 can be replaced.

[0015] The pedestal 10 is provided with a first bent portion 4, a second bent portion 5, a first gap portion 6, an intermediate bent portion 7, a second gap portion 8, and a third bent portion 9 in this order along the insertion direction of the long bolt 3 shown in FIG. 3 (indicated by an arrow in FIG. 1). The first bent portion 4 and the second bent portion 5 are integrally formed. The long bolt 3 is formed in an L shape having a bent end portion 3a, has a circular cross section, and a screw portion 3b is formed at the tip end portion.

[0016] The first bent portion 4 is located at the insertion end of the long bolt 3 in the base body 10a, and is formed by bending the base body 10a upward to create a roughly triangular opening, which is for inserting the bent end 3a of the long bolt 3. The second bent portion 5 is formed integrally with the first bent portion 4. That is, the second bent portion 5 is formed by bending the base body 10a upward together with the first bent portion 4, and further cutting out one side to form a side opening 5a. This side opening 5a is for rotating the bent end 3a of the long bolt 3 along the surface of the base body 10a, and the height of the side opening 5a is at least equal to the diameter d of the long bolt 3 (see Figure 3).

[0017] The first gap 6 is for folding back the bent end portion 3a, as will be described later, and is interposed between the second bent portion 5 and the intermediate bent portion 7, with a length L along the insertion direction of the long bolt 3 equal to the diameter d of the long bolt 3. Furthermore, a second gap 8 is interposed between the intermediate bent portion 7 and the third bent portion 9. The intermediate bent portion 7 has a side opening 7a formed therein to allow the bent end 3a to move toward the third bent portion 9 along the insertion direction of the long bolt 3. The side opening 7a is formed by cutting out one side of the intermediate bent portion 7 along its entire length. The opening of the side opening 7a has a height equal to at least the diameter d of the long bolt 3.

[0018] The second gap 8 has a length L along the insertion direction of the long bolt 3 that is at least equal to the diameter d of the long bolt 3, thereby allowing the bent end 3a to be folded back. The third bent portion 9 is formed by bending the base body 10a upward and has the function of a stopper against which the bent end 3a of the long bolt 3 abuts. In Figures 1 and 2(b), reference numeral 10b indicates a notch in the base body 10a. The notch 10b facilitates the movement of the long bolt 3 and the folding of the bent end 3a.

[0019] Figures 4(a) to 4(e) show the procedure for attaching the long bolt 3 to the base 10 shown in Figures 1 and 2. First, as shown in Figure 4(a), the bent end 3a of the long bolt 3 is inserted into the opening of the first bent section 4, and the long bolt 3 is rotated as indicated by the arrow in the figure. At this time, the bent end 3a rotates along the surface of the base body through the side opening 5a of the second bent section 5. The state after rotation is shown in Figure 4(b).

[0020] Next, as shown by the arrow in Figure 4(b), move the bent end 3a along the side opening 5a to the first gap 6, and then fold the bent end 3a back by approximately 180° in the first gap 6 (see Figure 4(c)). As shown in Figures 4(c) and 4(d), the bent end 3a is moved along the side opening 7a of the intermediate bent section 7 to the second gap section 8, and then, as shown in Figure 4(e), the bent end 3a is folded back approximately 180° in the opposite direction to Figure 4(c) at the second gap section 8 to complete the installation of the long bolt 3. At this time, the third bent section 9 acts as a stopper for the long bolt 3, and the intermediate bent section 7 prevents the long bolt 3 from being pulled out. To remove the long bolt 3, simply perform the operations shown in Figures 4(a) to (e) in the reverse order. In this embodiment, the long bolt 3 can be easily replaced, and the long bolt 3 can be installed in a stable state.

[0021] The base 10 described above can be manufactured, for example, by forming a notch 10b in a single metal plate by punching, and then forming a first bent portion 4, a second bent portion 5, an intermediate bent portion 7, and a third bent portion 9 by bending. Since the first bent portion 4, the second bent portion 5, the intermediate bent portion 7, and the third bent portion 9 are arranged in a straight line along the insertion direction of the long bolt 3, these bent portions 4, 5, 7, and 9 can be formed in a single bending operation.

[0022] (Second embodiment) Figures 5 and 6 show a base 11 according to a second embodiment of the present invention. Note that the same reference numerals are used for the same components as in the first embodiment shown in Figures 1 and 2, and detailed descriptions are omitted.

[0023] As shown in Figures 5 and 6, in this embodiment, the base 11 has, in order along the insertion direction of the long bolt 3 (indicated by the arrow in Figure 5), a first bent portion 41, a second bent portion 51 having a side opening 51a, a second gap portion 81, and a third bent portion 91 acting as a stopper, arranged on the base body 11a. In other words, the first bent portion 41 and the second bent portion 51 are formed integrally, similar to the first bent portion 4 and the second bent portion 5 in the first embodiment, but the first gap portion 6 is not formed. Also, in this embodiment, the intermediate bent portion 7 is not formed, but instead, the second bent portion 51 extends to the second gap portion 81. Furthermore, a notch portion 11b is formed in the base body 11a.

[0024] To install the long bolt 3, first insert the bent end 3a of the long bolt 3 into the opening of the first bent portion 41 as shown by the arrow in Figure 5. Next, rotate the long bolt 3 so that its long axis faces the insertion direction shown by the arrow, causing the bent end 3a to protrude outwards from the side opening 51a of the second bent portion 51. In this state, move the bent end 3a along the side opening 51a to the second gap 81, and then fold it back approximately 180° to complete the installation of the long bolt 3. The base 11 of this embodiment has the advantage of requiring less processing and being able to be manufactured at a lower cost compared to the base 10 of the first embodiment. Otherwise, it is the same as the first embodiment.

[0025] (Third embodiment) Figures 7 and 8 show a base 12 according to a third embodiment of the present invention. Note that the same reference numerals are used for the same components as in the first embodiment shown in Figures 1 and 2, and detailed descriptions are omitted.

[0026] As shown in Figures 7 and 8, in this embodiment, the base 12 has, in order along the insertion direction of the long bolt 3 (indicated by the arrow in Figure 7), a first bent portion 42, a first gap portion 62, a second bent portion 52 having a side opening 52a, a second gap portion 82, and a third bent portion 92 that acts as a stopper, arranged on the base body 12a. In other words, in this embodiment, a first gap 62 is interposed between the first bent portion 42 and the second bent portion 52. Also, although an intermediate bent portion 7 is not formed, instead, the second bent portion 51 extends to the second gap 82. A notch 12b is formed in the base body 12a.

[0027] The procedure for installing the long bolt 3 is the same as in the second embodiment described above. First, the bent end 3a of the long bolt 3 is inserted into the opening of the first bent portion 42 as shown by the arrow in Figure 7. At this time, the tip of the bent end 3a is inside the second bent portion 52. Next, the long bolt 3 is rotated so that its long axis faces the insertion direction shown by the arrow, causing the bent end 3a to protrude out of the side opening 52a of the second bent portion 52. In this state, the bent end 3a is moved along the side opening 52a to the second gap 82, and then folded back approximately 180° to complete the installation. Otherwise, it is the same as in the first embodiment.

[0028] (Fourth embodiment) Figure 9 shows a base 13 according to a fourth embodiment of the present invention. Note that the same reference numerals are used for the same components as in the first embodiment shown in Figures 1 and 2, and detailed descriptions are omitted.

[0029] As shown in Figures 9(a) to 9(c), the base 13 of this embodiment has, in order along the insertion direction of the long bolt 3 (indicated by the arrow in Figure 9(b)), a first bent portion 43, a first gap portion 63, a second bent portion 53 having a side opening 53a, a second gap portion 83, an intermediate bent portion 73 having a side opening 52a, a third gap portion 23, and a third bent portion 93 acting as a stopper, arranged on the base body 14a. The base body 13a has a notch portion 13b formed therein. In other words, the configuration of this embodiment is substantially the same as that of the first embodiment, except that the third gap 23 is formed, and the procedure for attaching the long bolt 3 is also the same as that of the first embodiment.

[0030] (Fifth embodiment) Figure 10 shows a base 14 according to a fifth embodiment of the present invention. Note that the same reference numerals are used for the same components as in the first embodiment shown in Figures 1 and 2, and detailed descriptions are omitted.

[0031] As shown in Figures 10(a) to (c), the base 14 of this embodiment has, in order along the insertion direction of the long bolt 3 (indicated by the arrow in Figure 10(b)), a first bent portion 44, a first gap portion 64, a second bent portion 54 having a side opening 54a, a second gap portion 84, an intermediate bent portion 74 having a side opening 74a, a third gap portion 24, and a third bent portion 94 acting as a stopper, arranged on the base body 13a. The base body 14a has a notch portion 14b formed therein. In other words, the configuration of this embodiment involves interposing a first gap 64, a second gap 84, and a third gap 24 between the first to third bent portions 44, 54, and 94, respectively. Otherwise, it is substantially the same as the first embodiment, and the procedure for attaching the long bolt 3 is also the same as in the first embodiment.

[0032] Although embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various improvements and modifications are possible within the scope of the present invention. For example, although each of the bent portions 4, 5, 9... is shown as triangular in this embodiment, it may be semicircular, rectangular, or the like, as long as the long bolt 3 can be inserted. Furthermore, the base 10 of the present invention is not limited to a metal plate, but may be formed from plastic or the like. In this case, each of the bent portions 4, 5, 9... and the notched portion 10b... can be formed integrally with the base body 10a... by molding rather than by bending. [Explanation of Symbols]

[0033] 2 rivets 3 Long bolts 3a Bent end 3b Threaded part 4, 41, 42, 43, 44 1st bending part 5, 51, 52, 53, 54 2nd bending part 5a, 51a, 52a side opening 6, 62, 63, 64 1st cavity 7, 73, 74 Intermediate bending part 8, 81, 82, 83, 84 2nd cavity 9, 91, 92, 93, 94 3rd bending part 10, 11, 12, 13, 14 Pedestal 10a, 11a, 12a, 13a, 14a Base body 10b, 11b, 12b, 13b, 14b Notches 23, 24 Third cavity 100, filter mounting frame 101 Medium-performance filter 102 Filter retaining frame 103 Pre-filter 104 Long bolts 105 Wing nut 106 Pedestal 106a Open end

Claims

1. A base for detachably holding an L-shaped long bolt having a bent end, Along the insertion direction of the aforementioned long bolt, in order, A first bent portion having an opening formed for inserting the bent end of the long bolt, A second bent portion is located adjacent to the first bent portion, and the bent end is rotated along the surface of the base body to face the long bolt in the insertion direction, and a side opening is formed to allow movement along the insertion direction, A second void having a length equal to at least the diameter of the long bolt, A base for holding a long bolt, comprising a third bent portion that acts as a stopper for the long bolt.

2. The long bolt holding base according to claim 1, wherein the first bent portion and the second bent portion are integrally formed.

3. The long bolt holding base according to claim 1, wherein a first gap is formed between the first bent portion and the second gap.

4. The long bolt holding base according to claim 3, wherein the first gap portion has a length equal to at least the diameter of the long bolt and is a gap portion for folding back the bent end portion.

5. The long bolt holding base according to claim 3, wherein the first void is formed between the first bent portion and the second bent portion.

6. An intermediate bent portion is interposed between the second bent portion and the third bent portion, a first void is interposed between the second bent portion and the intermediate bent portion, and a second void is interposed between the intermediate bent portion and the third bent portion. The long bolt holding base according to claim 3, wherein the intermediate bent portion has a side opening formed therein for moving the bent end toward the third bent portion along the insertion direction of the long bolt 3.

7. A filter mounting frame equipped with a long bolt holding base according to claim 1 or 2.

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