JPH0553283U - Transformer mounting structure for electronic devices - Google Patents

Abstract

(57) [Summary] [Object] The present invention, in a transformer mounting structure for an electronic device, prevents rattling of the power transformer and rattling of the power source even when the casing of the electronic device is vibrated without rattling. The purpose is to prevent adverse effects on stable supply. [Structure] Four holding members 21a to 21d having an L-shaped cross section corresponding to the vertical sides of the four corners of a power transformer 11 are made of synthetic resin having elasticity and are erected on the housing bottom plate 12. Together with the mutual spacing L1 between the base portions of the pressing members 21a to 21d.
Is set to the width corresponding to the lateral dimension of the power transformer 11,
Further, the upper end mutual distance L2 is set to a width narrower than the lateral side dimension of the power transformer 11. As a result, the power transformer 11 is provided with the pressing members 21a at the upper part thereof.
It will be clamped and fixed by the elastic force of 21 d.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a transformer mounting structure for an electronic device in which a power transformer is fixed to a housing of the electronic device without screws.

[0002]

[Prior Art]

 FIG. 4 shows a conventional transformer mounting structure. The power supply transformer 11 has L-shaped members 13a, 13b, ... Provided on the bottom plate 12 of the electronic equipment casing, as shown by an arrow X. The corners of the horizontal sides of the bottom surface of the transformer are placed and fixed in accordance with the L-shaped portions of the L-shaped members 13a, 13b, ....

[0003]

[Problems to be solved by the device]

 However, since the core (iron core) portion of the power transformer 11 is protected by vinyl tape or the like, the dimensional accuracy of the core portion varies, and the interval between the L-shaped members 13a, 13b, ... It is extremely difficult to arrange the transformer 11 so that it fits with high precision.

Therefore, when the power transformer 11 is incorporated in the housing, rattling is inevitable, and there is a drawback that rattling noise is generated when the housing is vibrated, and the stable supply of power is adversely affected.

The present invention has been made in view of the above problems. Even when the housing of an electronic device is vibrated, rattling noise is not generated in the power transformer, and rattling noise is generated and stable supply of power is adversely affected. It is an object of the present invention to provide a transformer mounting structure for an electronic device that can prevent the spread.

[0006]

[Means for Solving the Problems]

 That is, the transformer mounting structure for an electronic device according to the present invention is one in which a power transformer is fixed to the casing of the electronic device without screws, and the transformer mounting position of the casing is made of elastic synthetic resin. A holding member having an L-shaped cross section is provided upright along each of a plurality of vertical side corners of the transformer, and the holding member has a base mutual interval set to a width corresponding to a transformer size. This is configured by setting the mutual gap between the upper ends to be a width narrower than the transformer size.

[0007]

[Action]

 In other words, when the upper end portions of the plurality of pressing members are spread apart, the vertical side corners of the power transformer are fitted to the L-shaped parts of the holding members, and the power transformer after the mounting is particularly installed. The upper portion of the pressing member is held by the elastic force of each pressing member.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a transformer mounting structure for an electronic device. In FIG. 1, 11 is a power transformer, 12 is a bottom plate of an electronic device housing, and a power transformer 11 is screwed to the bottom plate 12. The four holding members 21a to 21d for mounting and fixing without them are erected. FIG. 2 is a sectional view taken along the line AA showing the structure of the pressing members 21b and 21c in the transformer mounting structure of the electronic device.

The pressing members 21a to 21d are made of synthetic resin having elasticity and have an L-shaped cross section. The pressing members 21a to 21d are erected along the four vertical corners of the power transformer 11. In this case, the holding members 21a to 21d are set such that the base mutual distance L1 is set to a width corresponding to the horizontal side dimension of the power source transformer 11 and the upper end mutual distance L2 is narrower than the horizontal side dimension of the power transformer 11. Set to width. FIG. 3 is a diagram showing a fixed state of the power transformer 11 by the transformer mounting structure of the electronic device.

That is, as shown by the arrow X in FIG. 1, the power supply transformer 11 has a transformer 4 in each L-shaped portion in a state where the upper ends of the four holding members 21a to 21d are spread apart. The vertical side corners of the corners are fitted together. In this case, the power transformer 11 after the housing is mounted, in particular, the upper part thereof is clamped and fixed by the elastic force of the pressing members 21a to 21d.

On the other hand, on the inner surface of the housing cover 22, pressing projections 23a and 23b made of synthetic resin are integrally formed so as to correspond to the fixing position of the power supply transformer 11, whereby the power supply transformer 11 is provided with the projections 23a and 23b. The upper part is also pressed down, and it is more securely fixed.

Therefore, according to the transformer mounting structure of the electronic device, the four holding members 21a to 21d having an L-shaped cross section corresponding to the four longitudinal sides of the power transformer 11 are made of an elastic composite material. It is made of resin and is erected on the housing bottom plate 12, and the base mutual distance L1 of the pressing members 21a to 21d is set to a width corresponding to the lateral side dimension of the power transformer 11, and the upper end mutual distance L2. Since the width of the power transformer 11 is set to be narrower than the lateral dimension of the power transformer 11, the power transformer 11 is clamped and fixed by the elastic force of the holding members 21a to 21d, especially at the upper portion thereof. Even if the body vibrates, rattling does not occur, and it is possible to prevent rattling noises and adverse effects on stable power supply.

[0014]

[Effect of the device]

 As described above, according to the present invention, the power transformer is fixed to the housing of the electronic device without screws, and is made of elastic synthetic resin at the transformer mounting position of the housing. Equipped with a pressing member having an L-shaped cross section which is erected along each of the corners of the vertical side, the pressing member has a base mutual interval set to a width corresponding to the transformer size, and an upper end mutual interval. Since the width of the power transformer is set narrower than the transformer size, the upper part of the power transformer after the housing is attached is pinched by the elastic force of each holding member, and the electronic device housing is fixed. Even when vibrating, it is possible to prevent rattling noise and adverse effects on stable power supply without rattling of the power supply.

[Brief description of drawings]

FIG. 1 is a diagram showing a transformer mounting structure of an electronic device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line AA showing the configuration of the pressing member in the transformer mounting structure of the electronic device.

FIG. 3 is a diagram showing a fixed state of a power transformer according to the transformer mounting structure of the electronic apparatus.

FIG. 4 is a diagram showing a conventional transformer mounting structure.

[Explanation of symbols]

11 ... Power transformer, 12 ... Housing bottom plate, 21a to 21d
... pressing member, 22 ... housing cover, 23a, 23b ... pressing protrusion.

Claims (1)

[Scope of utility model registration request] 1. A transformer mounting structure for an electronic device, wherein a power transformer is fixed to a casing of the electronic device without screws, wherein a plurality of the transformers are formed of elastic synthetic resin at the transformer mounting position of the casing. A pressing member having an L-shaped cross section is provided upright along each of the corners of the vertical side. The pressing member has a base mutual interval set to a width corresponding to a transformer size, and an upper end mutual interval. A transformer mounting structure for electronic devices characterized by being set to a width narrower than the dimensions.