JPH02204700A - Setting device for cooling fan - Google Patents

Abstract

PURPOSE:To facilitate the setting and locking of a cooling fan by constituting a taper surface of a projection of a mounting plate to be elastically engaged with a positioning hole of a box body when an end side of the mounting plate on one side is made contact with a contact surface of the box body and clamped by a screw. CONSTITUTION:A contact surface 1a, coming into contact with an end side 11 of one side of a mounting plate 10 of a cooling fan 3 and provided with a tapped hole 18, is installed at the side of one side of a box body 1, and a positioning plate 1b, paralleled with an end side 12 on the other, and provided with a positioning hole 19 receiving its projection 16, is installed in the other side. When the end side 11 and the contact surface 1a are made contact with each other and a screw 14 is passed through the tapped hole 18 and clamped thereinto, a taper surface of this projection 16 is constituted so as to be elastically engaged with the positioning hole 19. In consequence, setting or removal to or from the box body 1 of the mounting plate 10 fitted with the cooling fan 3 and clamping by the screw 14 both can be done from the front of the box body 1 so that a working position is good enough, and that it is performable in a short time.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for installing and removing the cooling fan in a semiconductor device, etc., which is housed in a switchboard or the like and has a relatively lightweight cooling fan. , and relates to an attachment device that can be easily installed.

[Conventional technology]

FIG. 4 is a partial side sectional view showing a general arrangement for housing devices such as semiconductors in a switchboard, and FIG. 5 is a perspective view of a conventional device.

A box 1 incorporating a device made of a semiconductor or the like is placed in the upper part of a switchboard 2 having m2a, and a cooling fan 3 is further installed in the upper part of the device box 1. The cooling fan 3 is fixed with screws 4 from the upper surface of the box 1 of the apparatus.

Although not shown, in a different conventional example disclosed in Japanese Patent Application No. 63-74111, a ventilation device having wheels on a running surface provided on the ceiling of a box runs horizontally.

[Problem to be solved by the invention]

In the case where the conventional device described above is housed in a switchboard etc., when replacing the cooling fan 3 for maintenance etc., the switchboard 2
The cooling fan 3 must be replaced by removing the screws 4 in the narrow gap between the ceiling and the device box 1.
This extremely difficult task consumes a lot of time. Further, depending on the power distribution board, there is a problem in that the ceiling plate of the power distribution board 2 must be removed and the cooling fan 3 must be replaced.

The above-mentioned different conventional example requires a running surface and wheels, and although it is good for heavy objects, it has a problem that the structure is complicated for a lightweight cooling fan.

SUMMARY OF THE INVENTION An object of the present invention is to provide a mounting device that allows a cooling fan to be easily attached/detached and fixed even if the clearance above the cooling fan is narrow.

[Means to solve the problem]

The cooling fan mounting device of the present invention fixes the cooling fan to a mounting plate with both ends bent, a screw hole is provided on one end of the mounting plate, and a taper is provided on the other end of the mounting plate to protrude outward. A protrusion made of an elastic body having the shape of a shape is provided, one plate surface of the box body is covered with the inner hole, an opening of a size that can be closed by the inner hole is provided on this plate surface, and one side of the plate surface is provided with an opening of a size that can be closed by the inner hole. A contact surface that abuts the one end side and has a screw hole is provided, and a positioning plate that is parallel to the other end side and has a positioning hole into which the protrusion is inserted is provided on the other side, and When the end side and the contact surface are brought into contact with each other and fixed by passing a screw through each of the screw holes, the tapered surface of the protrusion is elastically locked in the positioning hole.

[Effect]

The cooling fan mounting plate, which has tapered protrusions made of an elastic material such as rubber, can be moved in and out horizontally from the front of the device, and the protrusions are inserted into positioning holes provided on the box side.
Then secure it with screws from the front.

〔Example〕

FIG. 1 is a perspective view of the embodiment, showing the state before the cooling fan is installed, FIG. 2 is a cross-sectional view taken along line nn in FIG. FIG. 2 is a cross-sectional view showing the part marked ■ in FIG. 2; The box body of the device with the cooling fan attached thereto is placed in the switchboard as shown in FIG. 4 described above.

In these drawings, first, a cooling fan 3 is installed in the middle hole 13 of the U-shaped mounting plate 10, which is made up of one end side 11 and the other end side 12 with both ends bent, and a middle hole connecting these.
is installed. One end side 11 is provided with a screw hole 15 through which a screw 14 is inserted, and the other end side 12 is provided with an outwardly tapered protrusion 16 made of an elastic material such as rubber, for example, in the shape of a truncated cone. .

An opening 17a is provided in the upper plate surface 17 of the box 1 that houses devices such as semiconductors, and this opening 17a is shaped to be closed by the opening 13 of the mounting plate 10. In the illustrated case, both side surfaces of the inner passage 13 are dimensioned to slightly protrude from the opening 17a, but the inner passage 13 may be made to fit snugly into the opening 17a. On one side of the plate surface 17, a contact surface 1a that contacts the edge 11 of the mounting plate 10 is formed by a part of the box 1, and on the other side, a positioning plate parallel to the edge 12 of the mounting plate 10 is formed. 1b is formed by a part of the box body 1. The contact surface 1a has a screw hole 18 that matches the screw hole 15, and the positioning plate 1b has a screw hole 18 that matches the screw hole 15.
Positioning holes 19 into which 6 is inserted are provided respectively.

Slide the mounting plate 10 on which the cooling fan 3 is attached in the direction of the arrow 20, pass the screw 14 through the screw hole 15, and insert the screw 14 into the screw hole 1.
8, the projection 16 elastically enters the positioning hole 19 with its tapered surface and is locked in a dimensional relationship.

A modification of the above embodiment will be explained. Both end sides 11 and 12 of the mounting plate 10 with both ends bent may be oriented upward, and the contact surface 1a and the positioning plate 1b may be oriented upward correspondingly. At this time, the end side 11 is inside the abutment surface 1a, and the screw 14 passes through the screw hole 18 of the abutment surface 1a and is screwed into the screw hole 15 of the end side 11. The mounting plate 10 may not be U-shaped but may be crank-shaped with the end sides 11 and 12 turned upward and downward. The opening 17a has plate surfaces 17 on four sides, and the contact surface 1a and the positioning plate 1b may be provided on the plate surface 17 as separate members from the box 1.The plate surface 17 is not limited to the ceiling of the box 1. Alternatively, the cooling fan 3 may be placed on another surface other than the ceiling, for example, on the side. The cooling fan 3 is relatively lightweight,
Depending on the air blow pressure used, an airtight gasket may be provided on the edge of the mounting plate 10.

〔Effect of the invention〕

The cooling fan mounting device of the present invention fixes the cooling fan to a mounting plate with both ends bent.
A screw hole is provided on one end of the mounting plate, and a protrusion made of a tapered elastic body that protrudes outward is provided on the other end,
Cover one plate surface of the box body with the inner hole, provide an opening large enough to be closed by the inner hole on this plate surface, and provide a screw hole on one side of the plate surface in contact with the one end side. A positioning plate is provided on the other side that is parallel to the other edge and has a positioning hole into which the protrusion is inserted, and the one edge and the abutment surface are brought into contact with each other. When the cooling fan is brought into contact with the housing and fixed by passing a screw through each of the screw holes, the tapered surface of the protrusion is elastically locked in the positioning hole. Fixing can be done from the front of the box, resulting in a good working posture and short work time.It also eliminates wasted work space on the switchboard when storing the box containing semiconductor devices, etc. in the switchboard. This has the advantage that there is no need to provide a window on the power distribution board for installing and removing the cooling fan.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the embodiment, showing the state before the cooling fan is installed, FIG. Fig. 4 is a partial side sectional view showing the general arrangement for housing devices such as semiconductors in a switchboard; Fig. 5 is a perspective view of a conventional device; be. DESCRIPTION OF SYMBOLS 1...Box body, 3...Cooling fan, 1o...Mounting plate, 14...Screw, 16...Protrusion, 19...Positioning hole. Figure 4 Figure 1 Figure 5 Figure 2 Figure 3

Claims (1)

[Claims] 1) A cooling fan is fixed to the middle side of a mounting plate with both ends bent, a screw hole is provided on one end of the mounting plate, and a projection made of a tapered elastic body that protrudes outward is provided on the other end. the center side covers one plate surface of the box body, an opening large enough to be closed by the middle side is provided in the plate surface, and one side of the plate surface is in contact with the one end side. A contact surface provided with a screw hole is provided, a positioning plate is provided on the other side parallel to the other end side and provided with a positioning hole into which the protrusion is inserted, and the one end side and the contact surface A cooling fan mounting device characterized in that when the protrusions are brought into contact with each other and fixed by passing screws through the respective screw holes, the tapered surfaces of the protrusions are elastically locked in the positioning holes.