JPH11274760A - Component retaining mechanism of electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain component retaining mechanism which makes troublesome works like screw fixing unnecessary without increasing the number of components, and can surely retain components in a chassis. SOLUTION: An aperture 1b and a notch 1c continuous with the aperture 1b are formed on the rear 1a of a chassis 1 constituted of a metal plate, and retaining segment 1d capable of bending to the back 1a is formed. Slant edges 1f slanting in directions which leave from the aperture 1b toward the tip part sides, from base end portion sides of retaining segments 1d, are formed at the tip parts of the respective retaining segments 1d. Inside the chassis 1, a connector 3 which is fixed on a printed board 2 and seen from the aperture 1b of the chassis 1 is arranged. In this state, the retaining segments 1d are bent toward the inside of the chassis 1, the slanting edges 1f of the retaining segments 1d are engaged with the upper surface of the connector 3, and the connector 3 is retained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support mechanism for supporting components in a chassis of various electronic devices, and in particular, to a component support capable of reliably supporting components without using fixing members such as screws. Regarding the mechanism.

[0002]

2. Description of the Related Art Various types of electronic equipment, for example, audio equipment, are covered by a chassis formed from a metal plate in a box shape, in which signals are recorded or recorded on a cassette tape or a compact disk. Various components such as a mechanism unit for reproduction, a printed circuit board on which a control circuit for controlling electric signals is mounted, and a connector for transmitting and receiving signals to and from other electronic devices are provided. FIG. 8 is a perspective view showing a connector portion of a general electronic device. In the figure, reference numeral 21 denotes a box-shaped chassis made of a metal plate, and a rectangular opening 21b is provided on the back surface 21a. A printed circuit board 22 on which a control circuit (not shown) is mounted is provided inside the chassis 21. On the printed circuit board 22, a connector 23 having a plurality of pins 23a and facing from an opening 21b of the chassis 21 is provided. Soldered. This connector 23
Is connected to a female connector 24 extending from another electronic device, so that signals can be transmitted to and received from the other electronic device.

In the electronic device 20 described above, when the connector 23 and the female connector 24 are attached and detached, stress is applied to the connector 23. When the detachment operation is frequently repeated, for example, the connector 23 Stress may be applied to the soldered portion, causing troubles such as solder cracking. Components to which a load is applied from the outside or a stress due to vibration or the like needs to be firmly supported to some extent by a different support mechanism other than fixing by soldering in order to prevent the occurrence of the above-described failure. 9 and 1
0 shows a conventional component support mechanism, FIG. 9 is a side view showing a support mechanism for supporting a connector, and FIG. 10 is a front view of the support mechanism.

[0004] In FIG. 9 and FIG.
1, a male connector 32 is attached. The connector 32 is formed by mounting a plurality of substantially L-shaped pins 35 on a base 34 made of synthetic resin. Fixed legs 34b having screw holes 34a are integrally formed on both sides of the base 34, respectively.
A pair of protruding pieces 34c, 3 having slits
4c are integrally formed. The protruding piece 34c is inserted into an insertion hole 31a provided in the printed circuit board 31 in advance, and the bulging portion 34d formed at the end thereof is engaged with the back surface of the printed circuit board 31 so that the connector 32
Is positioned on the printed circuit board 31, and at the same time, the horizontal movement of the connector 32 in the figure is restricted.

[0005] A hole 3 provided in the printed circuit board 31 is provided.
Fixing screws 33, 33 are inserted through 1b, 31b, and these fixing screws 33, 33 are fixed to fixing legs 34b, 34b of base 34.
The connector 32 is firmly fixed on the printed circuit board 31 by screwing it into the screw holes 34a, 34a. In this state, the connector 32 is electrically connected to the printed circuit board 31 by soldering the lead-out ends of the pins 35, 35,... To the conductive pattern formed on the back surface of the printed circuit board 31. Connector 32
The printed circuit board 31 on which the connector 32 is attached is screwed to the bottom surface 36b of the chassis 36 via a spacer, for example, in a state where the connector 32 is positioned so as to face the opening 36a of the chassis 36 as shown in FIG. It is fixed.

FIG. 11 is a side view showing another conventional component support mechanism. In the component support mechanism shown in FIG.
1 is a connector having a plurality of pins 42. This connector 41 is different from the connector 32 shown in FIGS. 9 and 10 only in that fixed legs are not provided on both sides of the base. Reference numeral 43 denotes an L-shaped bracket formed from a metal plate. A screw hole 43a formed by burring or the like is provided on the upper side of the bracket 43 in the figure. The printed circuit board 44 to which the connector 41 is attached is fixed in a state where the connector 41 is positioned so as to face an opening 45 a formed in the chassis 45. Then, the lower end of the bracket 43 is connected to the connector 4.
The connector 41 is sandwiched between the bracket 43 and the printed circuit board 44 by allowing the fixing screw 46 to be inserted into the insertion hole 45b of the chassis 45 and screwed into the screw hole 43a of the bracket 43 from this state. Supported in state.

[0007]

However, in the component support mechanism shown in FIGS. 9 and 10, since the fixing legs 34b are formed on both sides of the base 34 of the connector 32, both sides of the connector 32 are formed. There is a disadvantage that the component mounting space on the printed circuit board 31 in the section is reduced. In addition, a plurality of screwing operations are required to fix the connector 32, and there is a problem that the assembling workability is poor. On the other hand, according to the component support mechanism shown in FIG. 11, since it is not necessary to provide fixing legs on both sides of the connector 41, the component mounting area on the printed circuit board 44 does not decrease and high-density component mounting becomes possible. Further, the number of screwed portions can be reduced to one, so that the assembling workability is improved. However, since a separate member called the bracket 43 is required, there is a problem that the number of parts increases, which causes an increase in product cost. The present invention has been made in view of such a problem, and provides a component support mechanism that can reliably support components in a chassis without increasing the number of components and without cumbersome work such as screwing. It is intended to be.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to an electronic apparatus in which various parts are arranged inside a chassis made of a metal plate. A support piece that can be bent with respect to the outer peripheral surface is formed by this, the support piece is bent inward of the chassis and engaged with the component, and the engagement portion includes a base end side of the support piece. From the part toward the tip end side, so that the inclined side is formed, so that the number of parts is not increased and troublesome work such as screwing is not required. Can absorb the error of the relative positions of the components, and can reliably support the parts. In the above means,
The chassis is provided with an opening for exposing the connector to the outside of the chassis and allowing the connector to be inserted and removed from the outside, and a support piece is formed by an edge of the opening and a notch continuous from the edge, It is desirable to engage this support piece with the edge facing the opening of the connector,
This makes it possible to reliably support a position where a large stress is applied when the connector is connected to or disconnected from the outside.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 3 show a component support mechanism according to a first embodiment of the present invention. FIG. 1 is a front view showing a support mechanism for supporting a connector. FIG. 3 is a side view showing the support mechanism in a partial cross section. Reference numeral 1 in the figure denotes a box-shaped chassis made of a metal plate. A substantially rectangular opening 1b for exposing a connector 3 described later is formed in the rear surface 1a of the chassis 1.
A substantially T-shaped notch 1c continuous with the opening 1b is provided above the opening 1b in FIG. 1, so that a pair of opposing support pieces 1d, 1d are formed above the opening 1b. . The support pieces 1d, 1d
The support piece 1d can be bent with a small force because a groove 1e is provided at the base end of each support piece 1d and is continuous with the notch 1c. I have. Further, an inclined side 1f is formed at the distal end of each support piece 1d so as to be inclined in a direction away from the opening 1b from the base end side toward the distal end side.

The opening 1b and the notch 1c are formed by punching out the chassis 1 when the chassis 1 is formed into a box shape by press working or the like.

A printed circuit board 2 on which a control circuit (not shown) is mounted is provided inside the chassis 1. The printed circuit board 2 has through holes 2a, 2a for positioning a connector 3 to be described later and pins 3a, 3
are formed. Through holes 2b, 2b,... for inserting a,. The connector 3 described above is mounted on the printed board 2. This connector 3
A plurality of pins 3a, 3a,... Made of a conductive material are mounted on a base 3b formed of a synthetic resin into a rectangular cylindrical shape. On the lower surface in FIG. 1 of the base 3b, a pair of protrusions 3c having a slit at the center are provided integrally with the base 3b. A bulge 3d is formed at the tip of each protrusion 3c.

The connector 3 includes a plurality of pins 3a, 3
a,... are printed through holes 2b, 2b,.
At the same time, the protrusions 3c, 3c are inserted into the insertion holes 2a, 2a of the printed circuit board 2 to lock the bulging portions 3d, 3d on the back surface of the printed circuit board 2. In this state, the pins 3a, 3c
.. Are attached to the conductive pattern formed on the rear surface of the printed circuit board 2 by soldering. The printed circuit board 2 to which the connector 3 is attached is positioned so that the connector 3 faces the opening 1b of the chassis 1, and is fixed to the bottom surface 1g of the chassis 1 by a screw or the like via a spacer.

After the printed circuit board 2 on which the connector 3 is mounted is fixed in the chassis 1 as described above,
The supporting pieces 1d, 1d of the chassis 1
2 and 3, the inclined sides 1f, 1f of the support pieces 1d, 1d engage with the upper surface of the connector 3, and the support pieces 1d, 1d and the printed circuit board 2 as shown in FIGS. The connector 3 is reliably supported in a state where the connector 3 is sandwiched. Further, since the inclined side 1f of each support piece 1d is inclined in a direction away from the connector 3 from the base end side to the distal end side of the support piece 1d, the connector 3 is positioned with respect to the support piece 1d in FIG. 2, the dimensional error can be absorbed by appropriately changing the bending angle α of the support piece 1d shown in FIG. Is adapted to be engaged. According to the component support mechanism described above, when a female connector extending from another electronic device is attached to or detached from, for example, the connector 3, the connector 3 in FIG. 1 and FIG. Piece 1d, 1d
, And the stress applied to the soldered portions of the pins 3a, 3a,... Is reduced. Also, connector 3
It is not necessary to provide the support legs 34b and the like as shown in FIGS.

Next, a second embodiment of the present invention will be described with reference to FIGS. The same components as those shown in FIGS. 1 to 3 are denoted by the same reference numerals, and detailed description is omitted. FIG. 4 is a front view showing a component support mechanism according to a second embodiment of the present invention, and FIG. 5 is a view taken along the line AA of FIG. On both sides of the opening 1b of the chassis 1, substantially U-shaped notches 1h, 1h continuous with the opening 1b are provided, and a rear surface 1a of the chassis 1 is provided between the notch 1h and the opening 1b.
The supporting pieces 1j, 1j that can be bent with respect to the first and second parts are formed. At the distal end of each support piece 1j, there is formed an inclined side 1k that is inclined in a direction away from the opening 1b from the base end side toward the distal end side similarly to the inclined piece 1f provided on the support piece 1d. I have.

After the printed circuit board 2 to which the connector 3 is attached is positioned and fixed so that the connector 3 faces the opening 1b of the chassis 1, the printed circuit board 2 is opened.
b, supporting pieces 1d, 1d and 1j, 1j formed around
Is bent toward the inside of the chassis 1 by a tool or a finger, as shown in FIG. 5, each of the support pieces 1d, 1d and 1d
j, 1j are engaged with the top and side surfaces of the connector 3, respectively, and the connector 3 is reliably supported in a state where the peripheral surface is surrounded by the support pieces 1d, 1d, 1j, 1j and the printed circuit board 2. You. According to the component supporting mechanism of the second embodiment, the upward movement of the connector 3 in FIG. 4 is restricted by the supporting pieces 1d, 1d, and the horizontal movement is restricted by the supporting pieces 1j, 1j. You. Therefore, even when stress from multiple directions is applied to the connector 3 due to attachment / detachment operation or vibration of the connector extending from another electronic device, the stress applied to the soldered portions of the pins 3a, 3a,. Generation can be prevented before it occurs.

The engaging portions of the support pieces 1j, 1j with the connector 3 have inclined sides 1 that are inclined in a direction away from the connector 3 from the base end side to the distal end side of the support piece 1j.
k, 1k, the connector 3 and the support piece 1
The relative displacement between the j and 1j in the right and left direction in the figure is absorbed, and each support piece 1j and 1j is securely engaged with the connector 3. In the above-described first and second embodiments, the support mechanism of the connector on the printed circuit board arranged in the chassis has been described. However, the present invention is not limited to electronic components such as connectors, and various types of components provided in the chassis. It can be applied as a support mechanism for parts.

FIGS. 6 and 7 show a component support mechanism according to a third embodiment of the present invention. FIG. 6 is a front view and a view showing a support piece formed on a chassis before bending. 7 is a side view showing a state in which the support piece shown in FIG. 6 is bent to support the component. 6 and 7, reference numeral 11 denotes a chassis formed from a metal plate into a box shape. On the back surface 11a of the chassis 11, a notch 11b having a generally U-shape and having a serrated portion on the lower side in the figure is punched out by press working. A support piece 11c that can be bent with respect to the back surface 11a of the chassis 11 is formed in a portion surrounded by the notch 11b. This support piece 1
On the lower side of FIG. 1c (the portion corresponding to the sawtooth-shaped portion of the notch 11b), there are provided inclined sides 11d and 11e which are inclined upward from the base end side toward the front end side.

Inside the chassis 11, a cassette reproducing mechanism 12 for holding and reproducing a cassette tape (not shown) is provided. This cassette reproducing mechanism 12
It has a cassette holder 12a for accommodating a cassette tape, and supporting legs 12b for vertically supporting the cassette holder 12a. The lower end of the supporting legs 12b is mounted on the bottom surface 11f of the chassis 11 via the spacer 13. By being placed, it is supported in a state of floating with respect to the bottom surface 11f. Although not particularly shown, the cassette reproducing mechanism 12 is provided with a small board on which an electronic circuit for electrically controlling the operation timing and the like of the cassette reproducing mechanism 12 is mounted, and is pulled out from the small board. The flexible wire 12c extends to the right in FIG. At the tip of this flexible wire 12c,
A lock member 15b for attaching the flexible wire 12c to the printed board 14 by fitting with a base member 15a described later is attached.

Below the cassette reproducing mechanism 12, there is provided a printed circuit board 14 on which a control circuit (not shown) and the like are mounted. The upper surface of the printed circuit board 14 on the right side in FIG. 7 has a base member 15a fitted with the lock member 15b.
Is installed. The base member 15a is connected to the connection terminal 1.
5c, 15c,..., And these connection terminals 15c, 15c,.
Are soldered to and connected to conductive patterns formed on the back surface of the printed circuit board 14. Then, by fitting the lock member 15b attached to the tip of the flexible wire 12c to the base member 15a, the conductive portion of the flexible wire 12c and the connection terminals 15c, 15c,. That is, the small board of the cassette reproducing mechanism 12 and the printed board 14 are electrically connected. The printed circuit board 14 is provided with an insertion hole 14a through which the spacer 13 is inserted. The spacer 13 extends upward from the bottom surface 11f of the chassis 11 through the insertion hole 14a. Then, as shown in FIG.
The printed circuit board 14 is placed on the fixing portion 11g cut and raised from the bottom surface 11f of the first substrate 1 and the fixing screw 16 is screwed from above the printed circuit board 14 into the screw hole 11h formed in the fixing portion 11g. It is fixed inside the chassis 11.

From this state, as shown in FIG.
When the support piece 11c is bent inward of the chassis 11, the inclined side 11d on the tip end side of the support piece 11c engages with the upper surface of the lower end of the support leg 12b of the cassette reproducing mechanism 12, and Support leg 1 between piece 11c and spacer 13
2b, and the cassette reproducing mechanism 12 is
It is supported without backlash within. At the same time, the support piece 11
The other inclined side 11e of c is engaged with the upper surface of the lock member 15b fitted to the base member 15a, thereby preventing the lock member 15b from coming off from the base member 15a due to vibration or the like. The inclined sides 11d and 11e of the support piece 11c are inclined in a direction away from the lower end of the support leg 12b and the lock member 15b of the cassette reproducing mechanism 12 from the base end side to the distal end side of the support piece 11c. Therefore, even if there is a relative error between the vertical position of the supporting piece 11c in FIG. 7 and the vertical position of the cassette reproducing mechanism 12 and the lock member 15b, the cassette reproducing mechanism 12 and the locking member Support piece 11 for 15b
c is surely engaged.

In the first to third embodiments, the description has been given of the example in which the components disposed in the chassis are supported by the support pieces formed to be bendable with respect to the rear surface of the chassis. Is not limited to the rear surface of the chassis, but may be formed on any surface as long as it is an outer peripheral surface such as a side surface or a bottom surface of the chassis. In addition, the inclined side provided on the support piece is not necessarily required, and by disposing a soft member such as rubber at a portion where the support piece engages with the component, the support piece and the component engaging with the support piece can be connected. The relative displacement may be absorbed.

[0022]

As described above, according to the present invention, in an electronic device in which various components are arranged inside a chassis made of a metal plate, the outer peripheral surface of the chassis is partially cut away to thereby provide the outer peripheral surface. A support piece that can be bent with respect to is formed, and this support piece is bent inward of the chassis to engage with the component, and the engaging portion is provided from the base end side of the support piece to the tip end side. Since the inclined side is formed so as to be inclined in a direction away from the component, no troublesome work such as screwing is required without increasing the number of components, and errors in the relative position between the support piece and the component are not required. Can be absorbed and the parts can be reliably supported. In the above means, the chassis is provided with an opening for exposing the connector to the outside of the chassis and allowing the connector to be inserted and removed from the outside, and is supported by an edge of the opening and a notch continuous from the edge. It is desirable that a piece is formed and the supporting piece is engaged with the edge portion facing the opening of the connector, so that a position where a large stress is applied when the connector is externally inserted into or removed from the connector can be reliably supported. Further, since the support pieces can be punched and formed at the same time when the chassis is formed by press working or the like, manufacturing costs can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view showing a component support mechanism according to a first embodiment of the present invention.

FIG. 2 is a view as viewed in the direction of arrows AA in FIG. 1;

FIG. 3 is a side view showing a part cross section of the component support mechanism shown in FIG. 1;

FIG. 4 is a front view showing a component support mechanism according to a second embodiment of the present invention.

FIG. 5 is a view taken in the direction of arrows AA in FIG. 4;

FIG. 6 is a front view showing a state before bending a support piece formed on a chassis of a component support mechanism according to a third embodiment of the present invention.

FIG. 7 is a side view showing a state where the support piece of the component support mechanism shown in FIG. 6 is bent to support the component.

FIG. 8 is a perspective view showing a connector portion of a general electronic device.

FIG. 9 is a side view showing a conventional component support mechanism.

FIG. 10 is a front view of the component support mechanism shown in FIG. 9;

FIG. 11 is a side view showing another conventional component support mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 11 Chassis 1a, 11a Back 1b Opening 1c, 1h, 11b Notch 1d, 1j, 11c Supporting piece 1f, 1k, 11d, 11e Inclined side 3 Connector (part) 12 Cassette reproducing mechanism (part) 15b Lock member (part) )

Claims (2)

[Claims] 1. An electronic device in which various components are disposed inside a chassis made of a metal plate, wherein a support piece that can be bent with respect to the outer peripheral surface by partially cutting out the outer peripheral surface of the chassis is provided. The supporting piece is bent inward of the chassis to engage with the component, and the engaging portion of the supporting piece with the component is provided from the base end side to the distal end side of the supporting piece. A component supporting mechanism for an electronic device, wherein an inclined side that is inclined in a direction away from the component toward the component is formed. 2. The chassis has an opening for exposing the connector to the outside of the chassis and allowing the connector to be inserted and removed from the outside, and an edge of the opening and a notch continuous from the edge. 2. The component support mechanism according to claim 1, wherein the support piece is formed by the support piece, and the support piece is engaged with an edge of the connector facing the opening.