JPH0623294U - Rack mount adapter - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce the size and weight while ensuring the strength of the adapter. [Structure] A rack mounting surface 1a fixed to the front surface of the left side rack 2L with a set screw 4 and a device mounting surface 1d fixing a device 3 with the set screw 4 are bent so as to form an obtuse angle with each other in a substantially triangular shape. Are connected by the first and second connecting surfaces 1b and 1c formed of two flat surfaces, and the stress generated on these connecting surfaces 1b and 1c due to the weight of the device 3 is almost only tensile and compressive stress parallel to each surface, The generation of torsional stress perpendicular to each strain-sensitive surface is minimized.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rack mount adapter for mounting a device having a smaller width in a standard size rack.

[0002]

[Prior art]

 Generally, the panel size of various kinds of AV equipment and communication equipment mounted on a rack is standardized according to, for example, the EIA standard and the JIS standard, and the width of the panel surface is 19 inches (482.6 mm) and the height is 1 It is specified to be an integral multiple of .75 inches (44.45 mm) or an integral multiple of 49 mm, and the standard rack size is commonly called a 19-inch rack.

However, the standard size device described above tends to be too large for personal use due to recent housing circumstances and the like, and a number of smaller and smaller AV devices have come to the market.

In view of such circumstances, a rack mount adapter (hereinafter referred to as “adapter”) for mounting a small size device having a narrower width in a standard size rack is supplied. 3 (a) and 3 (b) exemplify a conventional adapter of this type. The adapter 11 shown in FIG. 3 (a) is a rectangular rack screwed to the front surfaces of the left and right rack side plates 2L and 2R. It is composed of a mounting surface 11a, a substantially triangular connecting surface 11b bent backward from the rack mounting surface 11a, and a device mounting surface 11c in which the lower edge of the connecting surface 11b is bent at a right angle. A small-sized device 3 is mounted on and screwed.

The adapter 21 shown in (b) of FIG. 1 includes a rack mounting surface 21a that is screwed to the front surfaces of the left and right rack side plates 2L and 2R, and a trapezoidal connecting surface that is bent rearward from the rack mounting surface 21a. 21b and a device mounting surface 21c in which the lower edge of the connecting surface 21b is bent at a right angle. The device 3 is mounted on the device mounting surface 21c and screwed. 3A and 3B, the pair of left and right adapters 21 are symmetrical.

[0006]

[Problems to be solved by the device]

 However, in the case of such a conventional adapter, in the former case, a large bending moment in the direction perpendicular to the rack mounting surface of a square having a large area acts, and the torsional stress generated on the rack mounting surface becomes large and distortion occurs. There was a problem in strength when mounting heavy equipment.

In the latter case, the width C of the device mounting surface is large, the bending stress applied to the surface is large, and the torsional stress is also generated in the connecting surface having a large area. Therefore, the depth dimension is increased to increase the rigidity of the adapter. However, there is a problem that the adapter becomes large and heavy.

The present invention has been made in view of the above points, and an object thereof is to ensure the strength of the adapter while reducing the size and weight of the adapter.

[0009]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention is a rack mount adapter for mounting a device having a width smaller than a standard size for rack mounting in a rack, the mounting surface for the rack and the mounting surface for the device. The present invention provides a rack mount adapter in which two surfaces are substantially triangular and are bent so as to form an obtuse angle with each other.

[0010]

[Action]

 By configuring the rack mount adapter according to the present invention as described above, the two planes that connect the rack mounting surface and the equipment mounting surface are each triangular in shape and have a small area. Most of the stress generated in the plane becomes tensile stress and compressive stress, and the torsional stress in the direction perpendicular to the plane becomes extremely small. Therefore, it is possible to obtain sufficient strength with a small and lightweight adapter.

[0011]

【Example】

 An embodiment of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a perspective view showing a rack and equipment to which an embodiment of the present invention is to be fixed, and FIGS. 2 (a) and 2 (b) are exploded views of a pair of left and right adapters.

[0012] This adapter is used by fixing it to the front surfaces of a pair of left and right rack side plates 2L and 2R at the same height, and each pair of adjacent left and right adapters 1 and 1'is respectively. In the following description, the configuration and operation of only the left adapter 1 will be described as an example, and the same reference numerals are used for the parts of the right adapter 1'corresponding to the adapter 1. Is attached with a "dash" and its description is omitted.

The adapter 1 is formed by bending and press-molding a slightly thick plate material, and has a plurality of horizontal lengths which are closely attached to the front surface of the rack side plate 2 and correspond to the plurality of screw holes 2 a provided in the rack side plate 2. A rack mounting surface 1a having a rack mounting hole 1e formed of a hole, a first connecting surface 1b having a triangular shape bent in an obtuse angle from the rack mounting surface 1a toward the rear of the rack and inward of the rack, and The second connecting surface 1c having a substantially triangular shape that is bent in an obtuse angle from the connecting surface 1b and is parallel to the rack side plate 2, and the obtuse angle is bent from the lower edge of the second connecting surface 1c toward the inside of the rack. It is composed of a horizontal device mounting surface 1d having a plurality of device mounting holes 1f for mounting the device 3.

The mounting surface 1a of the adapter 1 configured as described above is screwed and fixed to a required height on the front surface of the left side rack side plate by a plurality of setscrews 4, and an adapter 1'which is symmetrical to this is fixed. The right side rack side plate is fixed by screwing it to the same height on the front side, and the small size device 3 is mounted on each device mounting surface 1d, and is screwed from below by a plurality of setscrews 4.

In this state, the rack mounting surface 1a is firmly screwed tightly to the rack 2L or 2R, and there is no risk of distortion due to the weight of the device 3. The first connecting surface 1b bent from the rack mounting surface 1a has a triangular shape and two sides thereof form bent parts, and the second connecting surface 1b bent from the first connecting surface 1b. The surface 1c also has a substantially triangular shape, and two sides thereof form a bent portion, both connecting surfaces have a small area, and the device mounting surface 1d is bent from the second connecting surface 1c. Since the width D is narrow, the rigidity of each surface 1a, 1b, 1c, 1d of the adapter 1 is extremely high.

Further, the force acting on the first and second connecting surfaces 1b and 1c due to the weight of the device 3 is extremely small in the direction perpendicular to each surface, so that almost no bending stress or torsional stress is generated. Instead, most of the force is in the tensile or compressive direction, and becomes tensile or compressive stress in the planar direction, so that the amount of deflection that occurs in the adapter 1 can be minimized. It will be possible to mount a device with.

In the above embodiment, the second connecting surface 1c has a trapezoidal shape that is extremely close to a triangle to facilitate bending of the adapter. However, this is similar to the first connecting surface 1b. It is also possible to have a perfect triangular shape.

[0018]

[Effect of device]

 As described above, in the rack mount adapter according to the present invention, the rack mounting surface and the device mounting surface are connected by the two flat surfaces that are bent in a triangular shape. The stress generated in these connecting surfaces can be made into a tensile stress and a compressive stress which have almost no relation to strain, and the torsional stress weak against strain can be made extremely small. As a result, it is possible to safely mount heavy equipment using a small and lightweight adapter.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention together with a rack and equipment to be fixed.

FIG. 2 is a development view of the same embodiment.

FIG. 3 is a perspective view showing a conventional rack mount adapter together with a rack and devices.

[Explanation of symbols]

1 ... Rack mounting adapter, 1a ... Rack mounting surface,
1b ... 1st connection surface, 1c ... 2nd connection surface, 1d ... Equipment mounting surface, 2L, 2R ... Rack side plate, 3 ... Equipment, 4 ... Set screw

Claims (1)

[Scope of utility model registration request] 1. A rack mount adapter for mounting a device having a width smaller than a standard size for rack mounting on a rack, wherein a mounting surface for the rack and a mounting surface for the device are provided on respective surfaces. A rack mount adapter, characterized in that are connected by two planes that are substantially triangular and bent so as to form obtuse angles with each other.