Finger guard fixing structure

Abstract

To provide a finger guard fixing structure which enables easy attachment and detachment.SOLUTION: A finger guard fixing structure fixes a finger guard 50 to an air outlet 30 of a metallic housing 10 in which a fan 40 is stored. The finger guard fixing structure includes a cut and raised part 60 which is disposed around the air outlet 30 and formed by cutting and raising a part of the metallic housing 10. A tip 51 of the finger guard 50 is sandwiched between the cut and raised part 60 and the metallic housing 10 to fix the finger guard 50.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a finger guard fixing structure. [Background technology]

[0002] Finger guards are often fixed with screws. However, there are also methods for fixing finger guards without using screws. The technology of Patent Document 1 is a type where the guard is fitted into a part machined into a convex shape, the technology of Patent Document 2 is a type where the guard is machined into a mounting hole and fitted into the hole, and the technology of Patent Document 3 is a type where the guard is attached to a part machined into a concave shape and fitted into the hole. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2001-182695 A [Patent Document 2] Japanese Utility Model Application Publication No. 5-1922 [Patent Document 3] Japanese Patent Publication No. 1-189438 Summary of the Invention [Problem to be solved by the invention]

[0004] Although various techniques have been proposed in the prior art, there is a demand for a finger guard fixing structure that can be easily attached and removed.

[0005] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a finger guard fixing structure that can be easily attached and removed. [Means for solving the problem]

[0006] The present invention employs the following solutions. Note that the solutions below are merely examples, and the present invention is not limited thereto. The present invention can be an invention that includes at least one of the invention-specifying matters shown in the solutions below. Furthermore, each invention-specifying matter shown in the solutions below can be made into a subordinate concept by adding an element that limits the invention-specifying matter, and can also be made into a superordinate concept by deleting an element that limits the invention-specifying matter.

[0007] The finger guard fixing structure of the solution is, for example, a finger guard fixing structure that fixes a finger guard to an air outlet of a metal housing that stores a fan inside, and is characterized in that it is arranged around the air outlet and has a cut-up portion formed by cutting up a part of the metal housing, and the finger guard is fixed by clamping the tip of the finger guard between the cut-up portion and the metal housing. Effect of the Invention

[0008] According to the present invention, it is possible to provide a finger guard fixing structure that can be easily attached and removed. [Brief description of the drawings]

[0009] [Figure 1] 1A to 1C are diagrams illustrating a finger guard fixing structure according to a first embodiment. [Diagram 2] FIG. 2 is a plan view showing a cut-and-raised portion 60 of the first embodiment. [Diagram 3] FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2. [Figure 4] FIG. 2 is a side view showing the cut-and-raised portion 60 of the first embodiment. [Diagram 5] 11A to 11C are diagrams showing a method for fixing the finger guard 50. [Figure 6] FIG. 11 is a plan view showing a cut-and-raised portion 60 of the second embodiment. [Figure 7] 7 is a cross-sectional view taken along the line VII-VII in FIG. 6. [Figure 8] FIG. 11 is a plan view showing a cut-and-raised portion 60 of a third embodiment. [Figure 9] 9 is a cross-sectional view taken along line IX-IX in FIG. 8. [Figure 10] FIG. 13 is a diagram showing a conventional finger guard fixing structure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the following embodiments are shown as preferred examples of the finger guard fixing structure, and the embodiments are not limited to these examples.

[0011] [First embodiment] FIG. 1 is a diagram showing a finger guard fixing structure according to a first embodiment. The power supply device 100 has electronic components and the like required for the power supply device 100 disposed therein. The power supply device 100 also includes a metal housing 10. The metal housing 10 is made of sheet metal.

[0012] An input and output terminal section 20 is disposed on the top of the metal housing 10. A polygonal air outlet 30 is disposed in the lower center of the metal housing. A fan 40 is stored behind the air outlet 30 (inside the metal housing 10). The fan 40 is rotated by a motor (not shown) to cool the electronic components and the like inside.

[0013] The finger guard fixing structure of the first embodiment is a structure for fixing a finger guard 50 to an air outlet 30 of a metal housing 10 in which a fan 40 is stored. The finger guard fixing structure of the first embodiment includes a cut-and-raised portion 60. The cut-and-raised portions 60 are arranged in four places (two on the left side and two on the right side) around the air outlet 30 and are formed by cutting and raising a part of the metal housing 10. The finger guard fixing structure of the first embodiment fixes the finger guard 50 by sandwiching a tip portion 51 of the finger guard 50 between the cut-and-raised portions 60 and the metal housing 10.

[0014] The finger guard 50 is formed from a metal rod, and is composed of an eight-layered circular metal rod (main body) and six U-shaped metal rods (mounting legs) extending radially.

[0015] FIG. 2 is a plan view showing the cut-and-raised portion 60 of the first embodiment. The cut-and-raised portion 60 in the first embodiment is formed along the air outlet 30 of the metal housing 10 (adjacent to the end of the air outlet 30). An inverted U-shaped cutout portion 70 (shaped by an upper side, a left side, and a lower side) is formed around the cut-and-raised portion 60. The cut-and-raised portion 60 is cut and raised inside the cutout portion 70. When the cut-and-raised portion 60 is cut and raised, the cutout portion 70 changes from an inverted U-shaped opening to a roughly rectangular opening.

[0016] Cutout portion 70 may be a narrow slit of about a few millimeters, but is preferably a slit with a certain width (for example, a width of about the metal rod that constitutes finger guard 50, a width that allows more than half of the metal rod at tip portion 51 of finger guard 50 to be visible, etc.). This makes it possible to insert a tool such as a screwdriver into cutout portion 70 to assist in removing finger guard 50.

[0017] The cut-and-raised portion 60 also includes a protruding portion 80. The protruding portion 80 protrudes toward the metal housing 10 and is formed by cutting and raising a part of the cut-and-raised portion 60.

[0018] Specifically, the cut-and-raised portion 60 includes a first portion 61, a second portion 62, a third portion 63, a fourth portion 64, a fifth portion 65, and a sixth portion 66. The first portion 61 is flush with the metal housing 10 (has a flat surface). The second portion 62 is a portion that is inclined at a predetermined angle (for example, 45 degrees) from the left end of the first portion 61 toward the front side in the figure. The third portion 63 is a portion that extends horizontally from the left end of the second portion 62 toward the left side in the figure.

[0019] The fourth portion 64, the fifth portion 65, and the sixth portion 66 are portions disposed in the center of the third portion 63. The fourth portion 64, the fifth portion 65, and the sixth portion 66 are protruding portions 80. The fourth portion 64 is a portion that is inclined at a predetermined angle (for example, 45 degrees) from a portion slightly to the right of the center of the third portion 63 toward the back side in the figure. The fifth portion 65 is a portion that extends horizontally from the left end of the fourth portion 64 toward the left side in the figure. The sixth portion 66 is a portion that is inclined at a predetermined angle (for example, 45 degrees) from the left end of the fifth portion 65 toward the front side in the figure. It is also possible to make it easier to form the protruding portion 80 by forming slits of about several millimeters above and below the protruding portion 80 (the fourth portion 64, the fifth portion 65, and the sixth portion 66).

[0020] FIG. 3 is a cross-sectional view taken along line III-III in FIG. In the finger guard fixing structure of the first embodiment, the finger guard 50 is fixed by being sandwiched between the surface of the metal housing 10 and the underside of the cut-and-raised portion 60. In this case, it is preferable that "the inner dimension height A of the cut-and-raised portion 60 is less than or equal to the thickness B of the finger guard 50." This allows the finger guard 50 to be fixed by the cut-and-raised portion 60 alone.

[0021] FIG. 4 is a side view showing the cut-and-raised portion 60 of the first embodiment. The bending angle θ of the cut-and-raised portion 60 (sheet metal) is preferably 35 degrees to 55 degrees, more preferably 40 degrees to 50 degrees, and further preferably 45 degrees. By setting the bending angle θ in this range, the cut-and-raised portion 60 can be easily bent.

[0022] In addition to this angle, by narrowing the width H (see FIG. 2) of the cut-and-raised portion 60, the cut-and-raised portion 60 can be easily bent up and down, which makes it easier to insert and remove the finger guard 50. Note that the width H of the cut-and-raised portion 60 is preferably, for example, 8 mm to 10 mm.

[0023] Furthermore, a protruding portion 80 is fitted inside the finger guard 50. The tip 51 of the finger guard 50 is formed by bending a single metal rod into a U-shape. By making the "width C of the protruding portion 80 ≧ the inner width D of the finger guard 50", the finger guard 50 does not wobble, and it is possible to prevent vibrations and humming noises caused by the rotation of the fan. If screws are used for fastening, the screws may come loose, causing vibrations and humming noises.

[0024] The finger guard fixing structure of the first embodiment is a structure in which a protruding portion 80 is provided on a cut-and-raised portion 60, the finger guard is rotated to insert the finger guard into the cut-and-raised portion 60 from the direction of arrow X in the figure, and the finger guard is fixed by being sandwiched between the cut-and-raised portion 60 and the protruding portion 80.

[0025] FIG. 5 is a diagram showing a method for fixing the finger guard 50. As shown in FIG. First, as shown in FIG. 5(A), a power supply device 100 is prepared. Next, as shown in FIG. 5(B), a finger guard 50 is prepared. Then, as shown in FIG. 5(C), the finger guard 50 is placed on the front side of the air outlet 30. Finally, as shown in FIG. 5(D), finger guard 50 is rotated clockwise and tip portion 51 of finger guard 50 is sandwiched between cut-and-raised portion 60 and metal housing 10, thereby fixing finger guard 50 in place.

[0026] As described above, according to the first embodiment, the following effects are obtained. (1) According to the first embodiment, the finger guard 50 is fixed by sandwiching the tip 51 of the finger guard 50 between the cut-and-raised portion 60 and the metal housing 10. This makes it possible to attach and detach the finger guard 50 with the simple action of simply rotating the finger guard 50, thereby providing a finger guard fixing structure that can be easily attached and removed.

[0027] (2) According to the first embodiment, since the protruding portion 80 is formed by cutting and raising a part of the cut-and-raised portion 60, a finger guard fixing structure can be provided that can be easily and firmly fixed by two types of cut-and-raised portions.

[0028] (3) Conventionally, the finger guard 50 has been fixed with screws, which makes it inconvenient to attach and remove, and depending on how tightly the screws are tightened, a whirring noise may occur due to the vibration of the fan. In contrast, in the first embodiment, the metal housing 10 is cut and raised into a shape that serves as a fastener for the finger guard 50, and the finger guard 50 can be fixed with one touch by cutting and raising it. This makes it easy to attach and remove, and it is also possible to suppress the whirring noise of the fan by pressing the metal housing 10 (sheet metal).

[0029] (4) Since a cooling fan is almost always installed in the power supply device 100 (power supply product, power supply unit that requires forced air cooling), simplifying the fixing structure of the finger guard 50 can contribute to reducing the cost of the power supply device 100.

[0030] Second Embodiment Next, the second embodiment will be described with reference to the drawings. In the following description, parts that perform the same functions as those in the first embodiment are given the same reference numerals, and duplicated descriptions will be omitted as appropriate (this also applies to the following embodiments). In addition, the relationships of various dimensions shown in the first embodiment are also applicable to the second embodiment (this also applies to the following embodiments).

[0031] Fig. 6 is a plan view showing a cut-and-raised portion 60 of the second embodiment. Fig. 7 is a cross-sectional view taken along the line VII-VII in Fig. 6. The difference between the first and second embodiments is that in the first embodiment, the protruding portion 80 is formed by cutting and raising, whereas in the second embodiment, the protruding portion 80 is formed by deformation.

[0032] 6, the cut-and-raised portion 60-2 includes a protruding portion 80-2. The protruding portion 80-2 protrudes toward the metal housing 10 and is formed by deforming a part of the cut-and-raised portion 60-2. The protruding portion 80-2 can be formed by dowel processing or the like.

[0033] Specifically, the cut-and-raised portion 60-2 includes a first portion 61-2, a second portion 62-2, a third portion 63-2, and a fourth portion 64-2. The first portion 61-2 is flush with the metal housing 10. The second portion 62-2 is a portion that is inclined at a predetermined angle (for example, 45 degrees) from the left end of the first portion 61 toward the front side in the figure. The third portion 63-2 is a portion that extends horizontally from the left end of the second portion 62 toward the left side in the figure. The fourth portion 64-2 is a portion located in the center of the third portion 63. The fourth portion 64-2 is a protruding portion 80-2. The protruding portion 80-2 is a portion that protrudes toward the metal housing 10 and is formed by deforming a part of the cut-and-raised portion 60-2 by dowel processing or the like.

[0034] 7, the finger guard fixing structure of the second embodiment is a structure in which one protruding portion 80-2 is provided on the cut-and-raised portion 60-2, the finger guard is rotated to enter the cut-and-raised portion 60-2 from the direction of the arrow X in the figure, and the finger guard is sandwiched and fixed between the cut-and-raised portion 60-2 and the protruding portion 80-2. Note that the height of the protruding portion 80-2 can be set to any height, but it is preferable to set it to a height that slightly overlaps the height of the finger guard so that it can be reliably fixed or removed.

[0035] Thus, according to the second embodiment, in addition to the effects of the first embodiment, the finger guard can be fixed at one protruding portion 80-2, so that the structure can be simplified. Furthermore, according to the second embodiment, since the protruding portion 80-2 is provided by deforming a portion of the cut-and-raised portion 60-2, it is possible to provide a finger guard fixing structure that can be easily and firmly fixed by cutting and deforming.

[0036] Third Embodiment Next, a third embodiment will be described with reference to the drawings. Fig. 8 is a plan view showing the cut-and-raised portion 60 of the third embodiment. Fig. 9 is a cross-sectional view taken along the line IX-IX in Fig. 8. The difference between the second embodiment and the third embodiment is that, whereas only one protruding portion 80 is formed in the second embodiment, two protruding portions 80 are formed in the third embodiment.

[0037] 8, the cut-and-raised portion 60-3 includes a protruding portion 80-3. The protruding portion 80-3 protrudes toward the metal housing 10 and is formed by deforming a part of the cut-and-raised portion 60-3. The protruding portion 80-3 can be formed by dowel processing or the like.

[0038] Specifically, the cut-and-raised portion 60-3 includes a first portion 61-3, a second portion 62-3, a third portion 63-3, a fourth portion 64-3, and a fifth portion 65-3. The first portion 61-3 is flush with the metal housing 10. The second portion 62-3 is a portion that is inclined upward from the left end of the first portion 61 at a predetermined angle (for example, 45 degrees). The third portion 63-3 is a portion that extends horizontally from the left end of the second portion 62 toward the left side in the figure. The fourth portion 64-3 is a portion located on the right side of the center of the third portion 63. The fifth portion 65-3 is a portion disposed on the left side of the center of the third portion 63. The fourth portion 64-3 and the fifth portion 65-3 are a protruding portion 80-3. The protruding portion 80-3 protrudes toward the metal housing 10 and is formed by deforming a part (two places) of the cut-and-raised portion 60-3 by dowel processing or the like.

[0039] As shown in FIG. 9, the finger guard fixing structure of the third embodiment is a structure in which two protrusions 80-3 are provided on a cut-and-raised portion 60-3, the finger guard is rotated to enter the cut-and-raised portion 60-3 from the direction of arrow X in the figure, and the finger guard is fixed by being sandwiched between the cut-and-raised portion 60-3 and the protrusions 80-3.

[0040] Thus, according to the third embodiment, in addition to the effects of the first and second embodiments, the finger guard can be fixed at two protruding portions 80-3, so that the finger guard can be firmly fixed by the right protruding portion 80-3 while the left protruding portion 80-3 can function to prevent the finger guard from slipping off.

[0041] FIG. 10 is a diagram showing a conventional finger guard fixing structure. In the conventional finger guard fixing structure, tip 51 of finger guard 50 is simply fixed to a press-fit stud of metal housing 10 (sheet metal side) with screw 90 for power supply device 100A, and there is a possibility of vibration or humming noise due to loosening of screw 90. Also, in the conventional finger guard fixing structure, since fixing with screw 90 is required, the manufacturing and assembly work is increased accordingly.

[0042] In contrast, the finger guard fixing structure of each of the above-mentioned embodiments does not use screws 90, which not only eliminates the possibility of vibration or humming noise, but also allows the finger guard to be attached and detached with a single touch, making it possible to provide a finger guard fixing structure that does not require labor in manufacturing and assembly (reducing the labor required for screw tightening).

[0043] [Modifications] The present invention is not limited to the above-described embodiment, and can be practiced in various modified forms. (1) Although the example has been described in which the cut-and-raised portions are disposed at four locations around the air outlet 30, the cut-and-raised portions may be disposed at three locations or less, or may be disposed at five locations or more.

[0044] (2) The cut-and-raised portion may be disposed in a position where tip 51 of finger guard 50 fits within the cut-and-raised portion, or may be disposed in a position where tip 51 of finger guard 50 protrudes from the cut-and-raised portion. By disposing it in a fitted position, the appearance can be made neat, and by disposing it in a protruding position, finger guard 50 can be easily removed.

[0045] (3) The finger guard fixing structure has been described as being applied to the power supply device 100, but it can also be applied to other devices that require air cooling, not just power supply devices. (3) The protruding portion does not have to be formed. (4) The shape, dimensions, bending angle, etc. of each component are merely examples and can be changed as appropriate. [Explanation of symbols]

[0046] 10 Metal housing 20 Terminal section 30 Ventilation vent 40 Fans 50 Finger Guard 60, 60-2, 60-3 Cut-out section 70 Cutout 80, 80-2, 80-3 protruding part 90 Screw 100 Power supply

Claims

1. A finger guard fixing structure for fixing a finger guard to an air outlet of a metal housing having a fan housed therein, a cut-and-raised portion disposed around the air outlet and formed by cutting and raising a part of the metal housing; A finger guard fixing structure, characterized in that the finger guard is fixed by sandwiching a tip portion of the finger guard between the cut-and-raised portion and the metal casing.

2. The finger guard fixing structure according to claim 1, A finger guard fixing structure, wherein the cut-and-raised portion protrudes toward the metal housing and includes a protruding portion formed by cutting and raising a portion of the cut-and-raised portion.

3. The finger guard fixing structure according to claim 1, The finger guard fixing structure, wherein the cut-and-raised portion protrudes toward the metal housing and includes a protruding portion formed by deforming a portion of the cut-and-raised portion.

4. The finger guard fixing structure according to claim 1, A finger guard fixing structure, wherein an inner height of the cut-and-raised portion is equal to or smaller than a thickness of the finger guard.

5. The finger guard fixing structure according to claim 1, A finger guard fixing structure, characterized in that the bent angle of the cut-and-raised portion relative to the metal casing is 35 degrees to 55 degrees.

6. The finger guard fixing structure according to claim 2 or 3, The tip of the finger guard is formed by bending a metal rod into a U-shape, A finger guard fixing structure, wherein a width of the protruding portion is equal to or greater than an inner width of a tip end of the finger guard.

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