JP2942385B2 - Suspension spring switching mechanism for electronic equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device such as a compact disk (hereinafter referred to as "CD") autochanger, and more particularly, to the electronic device and its case according to the installation state of the electronic device. The present invention relates to a suspension spring switching mechanism of an electronic device in which a mounting angle of a suspension spring provided therebetween can be appropriately adjusted.

[0002]

2. Description of the Related Art Generally, CD autochangers and CDs
2. Description of the Related Art In order to reduce the influence of vibration during traveling, an in-vehicle electronic device such as a player is provided with anti-vibration measures such as storing the device body in a case suspended via a spring or the like.

[0003] An anti-vibration structure used in such an in-vehicle electronic device will be described using a CD autochanger as an example. A CD autochanger is used for multiple CDs
Is inserted into the autochanger, and the CD is freely exchanged inside the main unit for playback. Since the CD exchange mechanism is installed inside, the external dimensions are generally larger than those of a normal CD player. Has become.

[0004] For this reason, in the past, it was mainly mounted in a trunk room, but in recent years, the mechanism has been downsized, and it has become possible to install it in a place other than the trunk room.
A CD autochanger that can be installed at an arbitrary position in a vehicle has been developed to meet the needs of consumers who want to exchange a magazine at hand. However, even if it can be installed at an arbitrary position, the space inside the vehicle is limited, and there are many obstacles when installing a CD autochanger such as a seat and a console box.
Therefore, the CD autochanger cannot always be installed horizontally.

[0005] Further, in a CD auto-changer for a vehicle, when external vibration is applied, a sound skipping phenomenon of the CD occurs,
Since the device main body is damaged, a predetermined vibration-proof structure that works effectively is indispensable between the device main body and the case, regardless of the angle at which the device is installed.

As described above, there has been proposed a CD auto-changer which can be installed at a position desired by a consumer and which has been improved so as to obtain a sufficient anti-vibration effect regardless of the installation state. . FIG. 9 shows an example. That is, in the figure, reference numeral 1 denotes a main body of a CD autochanger, which includes a CD reproducing device, a magazine storage section, a CD changing mechanism, and the like.

[0007] On both side surfaces of the device main body 1, two front and rear dampers 1a are provided, and a claw 1b is provided at an intermediate portion between them. These dampers 1a are provided for absorbing vibration during traveling, and are made of a rubber member having a ring-shaped corrugated uneven portion, and an insertion hole is provided at a central portion thereof.

On the other hand, the claw 1b is for hooking one end of a suspension spring 3 attached between the claw 1b and the case in order to cancel the own weight of the main body 1. Also,
A case 2 for accommodating the device main body 1 has a pin 2a that fits into a center insertion hole of the damper 1a on a surface facing the device main body 1, and a claw for hooking the other end of the suspension spring 3. 2b is provided. These nails 1
b and 2b are formed such that the suspension spring 3 is in the same direction as the earth axis when the CD autochanger is installed horizontally.

In a conventional CD autochanger having such a configuration, a pin 2a provided on a side surface of a case 2 is fitted into an insertion hole of a damper 1a of a device main body, and a claw provided on the device main body 1 is provided. By hanging both ends of the suspension spring 3 on the claws 2b formed on the case 1b and the case 2, the device body 1 can be supported between the left and right sides of the case 2 with a degree of freedom.

However, the CD autochanger as shown in FIG. 9 has the following problems. That is, when the CD auto-changer is mounted at an angle, the main body 1 and the case 2 are connected to each other by the damper 1a and the pin 2a. However, since both ends of the suspension spring 3 are attached and fixed to predetermined claws 1b and 2b of the device body 1 and the case 2, respectively, the suspension spring 3 is inclined as it is, and the installation direction of the suspension spring 3 is not the same as the earth axis. Disappears.

Therefore, the effect of the suspension spring 3 for canceling the own weight of the device body 1 is greatly reduced,
An enormous load was to be applied to the engaging portion between the damper 1a and the pin 2a.

[0012]

In order to solve such a drawback, an improvement has been made so that the suspension spring 3 can always be arranged in the same direction as the earth axis regardless of the installation angle of the CD autochanger. A proposed CD autochanger has been proposed. That is, in this CD autochanger, as shown in FIG.
A claw 10 for hooking one end of the suspension spring 3
Are provided. The pawl 10 is used to hold the suspension spring 3 when the CD autochanger is placed horizontally.
From one claw 10a for hooking one end of the suspension spring to a claw 10b for hooking one end of the suspension spring 3 when the CD autochanger is arranged vertically, at intervals of approximately 90 degrees.

In the conventional CD autochanger having such a configuration, even if the installation angle is changed, one end of the suspension spring 3 is appropriately replaced with a predetermined claw so that the installation direction of the suspension spring 3 is always set to the ground axis. Therefore, the effect of canceling the weight of the device main body 1 by the suspension spring 3 can be maintained.

However, in this prior art, each time the installation position of the CD autochanger is changed, one end of the suspension spring 3 is detached from a certain claw, and another claw having an optimum angle is selected. One end has to be replaced, the operation is very complicated, and it has been difficult for a general consumer to perform accurately.

Therefore, as a further improvement, FIG.
A CD autochanger as shown in FIG. 1 has been proposed. This uses a suspension arm whose mounting angle with respect to the case 2 can be easily changed, instead of the large number of claws 10 in the CD autochanger shown in FIG.

That is, on the inner surface of the case 2, a suspension arm 20 having a claw 21 at an upper end thereof is rotatably attached to the case 2 by a suspension shaft 22. The suspension shaft 22 is inserted through a through-hole 23 formed in the case 2 and a through-hole 24 formed in the suspension arm 20 to rotatably support the suspension arm 20. Also, a claw 21 formed at the upper end of the suspension arm 20 has
The suspension spring 3 is configured such that one end thereof is hooked.

In the conventional CD autochanger having such a configuration, the suspension arm 20 is appropriately rotated in accordance with the installation angle so that the installation direction of the suspension spring 3 is the same as the ground axis. The effect of canceling the own weight of the device main body 1 by the suspension spring 3 can be maintained.

However, this method has an advantage that it is not necessary to replace the suspension spring 3 as compared with the conventional type shown in FIG. 10, but does not employ a means for restricting the rotation of the suspension arm 20. Therefore, even after the suspension arm is fixed at a predetermined position, there is a disadvantage that the suspension arm 20 further rotates if the weight of the device main body 1 is large. In addition, when the mounting angle of the suspension arm 20 is changed, if the suspension shaft 22 is loosened, the suspension arm 20 may be rotated significantly, and it is difficult to control the suspension arm 20.

Further improvements have been made in consideration of such drawbacks, and a CD autochanger as shown in FIG. 12 has been proposed. In this embodiment, the suspension arm used in the CD autochanger shown in FIG. 11 is provided with a means for restricting its rotation.

That is, the screw hole 30 is formed in the suspension arm 20 between the through hole 24 and the claw 21. On the other hand, around the through hole 23 formed in the case 2, a range corresponding to the rotation range of the suspension arm 20 (that is, for example, a quarter turn from the vertical direction to the horizontal direction)
A plurality of holes 31 are formed at predetermined intervals.

In the conventional CD autochanger having such a configuration, the suspension arm 20 is appropriately rotated so that the installation direction of the suspension spring 3 is in the same direction as the earth axis in accordance with the installation angle. The rotation of the suspension arm 20 can be restricted by inserting the screw 32 into the screw hole 30 formed in the suspension arm and the hole at the corresponding position.

However, according to this prior art, the rotation of the suspension arm 20 can be restricted, and the device body 1 with respect to the case 2 can be restricted, as compared with the conventional type shown in FIG.
Although there is an advantage that the support of is stable,
Since the screw 32 is attached and detached each time according to the installation angle of the CD autochanger, the workability is poor and the screw is easily lost. Further, there has been a problem that the thread is worn or the tightening force of the screw is reduced by repeating the screw attaching / detaching operation.

The present invention has been proposed in order to solve the above-mentioned drawbacks of the prior arts, and an object of the present invention is to install a suspension spring by a simple operation according to a change in an installation angle of an electronic device. An object of the present invention is to provide a suspension spring switching mechanism of an electronic device that can adjust the direction and is excellent in workability and reliability.

[0024]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, a device body is housed in a case of an electronic device, and the device body is rotatably attached at one end to the case. At the tip of the suspension arm, the other end is held by a suspension spring locked to the device body,
In a suspension spring switching mechanism for an electronic device, wherein an angle of the suspension arm is switched in accordance with an installation angle of a case, and a mounting angle of a suspension spring is switched, a rotatable and locked position is provided in a through hole provided in the case. And a suspension shaft formed so as to be movable in the axial direction so as to take an unlocked position. The suspension shaft is fixed to the suspension shaft so as not to move at least in the rotation direction. Between the case,
When the suspension shaft is at the lock position, locking means for restricting rotation of the suspension shaft with respect to the case at a plurality of positions, and urging means for constantly urging the suspension shaft to the lock position are provided. It is characterized by having.

[0025]

In the present invention having the above-described structure, the suspension shaft is always in the axially locked position by the biasing means, and the suspension shaft is fixed to the case without rotating by the locking means. I have. Therefore, the suspension arm fixed to the suspension shaft is also fixed to the case, and maintains a certain angle with respect to the case. As a result, the suspension spring having one end fixed to the suspension arm is also fixed at that angle.

When the mounting angle of the suspension spring is switched, if the suspension shaft is forcibly moved to the axially unlocked position against the urging means, the engagement between the locking means and the suspension shaft is released, The suspension shaft is rotatable in the through hole. Therefore, the suspension arm is rotated around the suspension shaft, the angle is adjusted, and the angle of the suspension spring is switched to the angle suitable for the case installation angle.

After the switching of the angle of the suspension spring is completed, if the forcible force applied to the suspension shaft is released, the suspension shaft returns to the locked position by the urging means, and its rotation is prevented by the locking means. The angle of the suspension shaft, the suspension arm fixed thereto, and the suspension spring locked on the suspension arm is secured at that position.

[0028]

【Example】

(1) First Embodiment Hereinafter, an embodiment of the present invention will be specifically described with reference to FIGS. The same members as those of the conventional type shown in FIGS. 9 to 12 are denoted by the same reference numerals, and description thereof will be omitted.

In this embodiment, as shown in FIG.
Suspension arm 40 disposed on the inner surface of the case
A claw 41 for fixing one end of the suspension spring is formed at an upper end portion, and a through hole 42 through which a shaft portion of a suspension shaft described later is inserted is formed at a substantially central portion. The through-hole 42 is formed in a D-shape having a linear portion 42a which is a locking portion for locking the rotation of the suspension shaft at an upper portion thereof.

Next, the case will be described. Case 2
Are formed with circular through holes 43 through which the shaft of the suspension shaft is inserted. The through hole 43 is formed at a predetermined position on the side surface of the case at predetermined intervals with two upper and lower cuts 45a and 45b, and the inside of the cut is pressed inward to form a substantially central portion of a convex portion 44 formed. Part is formed. Such processing is generally referred to as “cut drawing processing”.

FIG. 2 is a detailed view of the convex portion 44 and the through hole 43 formed by the cutting and drawing process. That is, the predetermined distance w a drilled two upper and lower notches 45a, put 45b, protrusion 44 is pressed by t ₁ between the cut inside the case is formed. The cut surfaces of these cuts serve as locking means for locking the rotation of the suspension shaft.

Next, the suspension shaft 46 will be described. As shown in FIGS. 1 and 3, a screw portion 47 is formed at the tip of the suspension shaft 46,
Subsequently, the D-cut portion 48 formed in cross-section D-shape having a flat portion 48a at the top, further following the D-cut portion 48, the cylindrical portion 49 of a width t ₂ is formed. This D
The cut portion 48 is configured to fit into the through hole 42 of the suspension arm 40, and the cylindrical portion 49 is configured to fit into the circular through hole 43 formed in the case.

Further, subsequent to the cylindrical portion 49, surrounding polygonal portion 50 having a width t ₁ which is cut in a polygonal shape is formed, further, the tapered portion 51 and the knob portion 52 is formed. The polygonal portion 50 is a locking portion that engages with the locking means formed on the case. The knob 52 is provided for facilitating angle adjustment by the suspension shaft 46. Further, the polygonal portion 5
Among 0, the interval between the planes parallel to each other is set to be the same as the interval w of the cutting and drawing process.

FIG. 4 shows the suspension shaft 46.
5 is a front view of the suspension arm 40, and FIG. 5 is a front view of the suspension arm 40. The polygon part 50 is formed of a regular polygon, and the number of faces thereof is even. This is so that the sides facing each other can contact the upper and lower end surfaces of the cut-and-drawn portion.

Further, as shown in FIGS. 2 and 3, the width t ₁ of the polygonal portion 50 of the suspension shaft is set so as to be equal to the cut-out size applied to the case. The width t ₂ of the cylindrical portion 49 is set to be substantially the same as the thickness of the side surface of the case. Further, the width t ₃ of the D cut portion 48 must be larger than the sum of the width t ₁ of the polygonal portion 50, the thickness of the suspension arm, and the maximum compression length of the spring 53.

The suspension spring switching mechanism of the electronic apparatus according to the present embodiment having such a structure operates as described below. That is, as shown in FIGS. 1 and 6, when the suspension shaft 46 is inserted into the through hole 43 formed in the case from the outside of the case (the left side in the figure), the polygonal portion 50 of the suspension shaft becomes The upper and lower end surfaces of the cut and drawn portion applied to the case are brought into contact with each other.
The cylindrical portion 49 formed at the front of 0 fits into the through hole 43 of the case.

A D-cut portion 48 formed in front of the cylindrical portion 49 is fitted into a through-hole 42 having a D-cut portion formed in the suspension arm 40, and thereafter, in front of the suspension arm 40 (in FIG. , Right side), attach the spring 53, the washer 54, and the nut 54, and fix the suspension arm 40 to the case.

As described above, the D-cut portion 48 of the suspension shaft 46 is fitted into the through hole 42 of the suspension arm 40 and is locked by the linear portion formed above the through hole 42. Also, the suspension shaft 46
Is fixed to the case by contacting the polygonal portion 50 with the upper and lower end surfaces of the cut and drawn portion applied to the case. As a result, the suspension arm 40 is fixed at a predetermined position with respect to the case.

The length of each part of the suspension shaft 46 is set such that the spring 53 is compressed when mounting is completed. Therefore, the suspension shaft 46 is always urged to the inside of the case (rightward in the figure) by the restoring force of the spring 53, while the suspension arm 40 is constantly urged to the outside (leftward in the figure) of the case. ing. As a result, the polygonal portion 50 of the suspension shaft and the upper and lower end surfaces of the cut and drawn portion are held in a fitted state, and the suspension shaft 46 and the suspension arm 40 are fixed to the case in a stable manner.

Next, a case where the installation angle of the suspension spring needs to be changed as a result of changing the installation position of the CD autochanger will be described. First, FIG.
7, the knob 52 of the suspension shaft 46 is pulled out as shown in FIG. In this state, the polygonal portion 5 of the suspension shaft
0 is apart from the upper and lower end surfaces of the cut and drawn portion, so that the suspension shaft 46 is rotatable with respect to the case. Note that even in this case, the suspension shaft 46 and the suspension arm 40
It is in a state of being integrated at the cut part. Further, the spring 53 is in a further compressed state.

In this way, the suspension shaft 46 is pulled out of the case against the restoring force of the spring 53,
By rotating the suspension shaft, the integrated suspension arm 40 can be rotated by a desired angle. Thereafter, when the suspension shaft 46 is released, the suspension shaft is pulled toward the case by the restoring force of the spring 53. Then, at this time, the other surface of the polygonal portion 50 of the suspension shaft comes into contact with the upper and lower end surfaces of the cut and drawn portion of the case,
The suspension shaft 46 is fixed to the case. As a result, with the mounting angle changed by a predetermined angle,
The suspension shaft and the suspension arm are non-rotatably fixed to the case.

In the suspension spring switching mechanism of this embodiment having such a configuration, excessive vibration is applied to the suspension arm 40 for some reason.
The suspension arm 40 is pulled toward the device body,
As a result, even if the spring 53 is deformed and the suspension arm is bent inward, the suspension shaft 4
6 and the case do not come off, so that the mounting angle of the suspension arm 40 does not change.

As described above, according to the present embodiment, the suspension shaft and the suspension arm are always integrated, and the engagement between the suspension shaft and the case is always maintained in a stable state by the biasing force of the spring. You. Even when the mounting angle of the suspension spring is changed, the suspension shaft can be pulled out against the urging force of the spring, rotated after a predetermined angle, and then the suspension shaft can be released, making it easy to adjust the mounting angle. And the accuracy is very high.

(2) Second Embodiment The present invention is not limited to the above-described embodiment, and the structure for fixing the suspension shaft to the case may be as shown in FIG. That is, the suspension shaft 60 is formed with one projection 62 projecting in the outer peripheral direction from the cylindrical portion 61 in the above embodiment, and the polygonal portion is unnecessary.

On the other hand, the case 2 is formed with a through hole 63 into which the cylindrical portion 61 is fitted. Around the through hole 63, a range corresponding to the rotation range of the suspension arm 40 (ie, for example, in the vertical direction). 1/4 lap from horizontal to horizontal)
A plurality of notches 64 are formed at predetermined intervals. The projection 62 is configured to engage with the notch 64. Other configurations are the same as in the above embodiment.

Also in this case, the suspension arm 40 and the suspension shaft 60 are integrated at their respective D-cut portions with their positions regulated. The suspension shaft 60 and the case 2 are non-rotatably fixed by fitting a projection 62 of a cylindrical portion of the suspension shaft into a notch 64 formed in the through hole 63.

Next, as a result of changing the installation position of the CD autochanger, if it becomes necessary to change the mounting angle of the suspension spring, the knob 52 of the suspension shaft 60 is pulled out. In this state, the projection 62 formed on the cylindrical portion 61 of the suspension shaft is separated from the notch 64 of the case, so that the suspension shaft 60 can rotate with respect to the case. Thereby, the suspension shaft can be easily rotated by a desired angle. Note that, even in this case, the suspension shaft 60 and the suspension arm 40 are integrated at their D-cut portions. Further, the spring 53 is in a further compressed state.

Thereafter, when the suspension shaft 60 is released, the suspension shaft is pulled toward the case by the restoring force of the spring 53. Then, at this time, the projection 62 of the suspension shaft fits into another notch formed in the case, and the suspension shaft 60 is fixed to the case. As a result, the suspension shaft and the suspension arm are non-rotatably fixed to the case with the mounting angle changed by a predetermined angle.

(3) Other Embodiments In addition to the above-described embodiments, as the locking means, the shape of the through-hole itself is polygonal, and a polygonal portion which fits into the base of the suspension shaft is formed. You may. Further, instead of a polygon, a spline may be formed at the base of the suspension shaft, and the edge of the through hole may be formed as an uneven portion engaging with the spline.

It is also possible to provide the biasing means on the opposite side of the suspension arm across the case, in which case a locking means is provided between the tip of the suspension shaft and the case.

[0051]

As described above, according to the present invention, the suspension arm is fixed to the suspension shaft so as not to rotate, and the suspension shaft is fixed to the case so as not to rotate. It is possible to provide a suspension spring switching mechanism of an electronic device that is excellent in workability and reliability and can easily adjust the mounting angle of the suspension spring with the fixed suspension spring.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of the present invention.

FIG. 2 is a side view and a sectional view of a case in the embodiment shown in FIG. 1;

FIG. 3 is a side view of a suspension shaft used in the embodiment shown in FIG. 1;

FIG. 4 is a front view of a suspension shaft used in the embodiment shown in FIG. 1;

FIG. 5 is a front view of a suspension arm used in the embodiment shown in FIG. 1;

FIG. 6 is a sectional view showing a fixed state in the embodiment shown in FIG. 1;

FIG. 7 is a sectional view showing an angle adjustment state in the embodiment shown in FIG. 1;

FIG. 8 is an exploded perspective view showing a second embodiment of the present invention.

FIG. 9 is a perspective view showing a support structure of a conventional electronic device.

FIG. 10 is a perspective view showing an example of a conventional suspension spring switching mechanism of an electronic device.

FIG. 11 is a perspective view showing an example of a conventional suspension spring switching mechanism of an electronic device.

FIG. 12 is a perspective view showing an example of a conventional suspension spring switching mechanism of an electronic device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Device main body 2 ... Case 3 ... Suspension spring 10 ... Claw 20 ... Suspension arm 22 ... Suspension shaft 23, 24 ... Through hole 30, 31 ... Screw hole 32 ... Screw 40 ... Suspension arm 41 ... Claw 42 ... D cut part Penetration hole 43 ... Circular through hole 46 ... Suspension shaft 47 ... Screw part 48 ... D cut part 49 ... Cylinder part 50 ... Polygon part 52 ... Grab part 60 ... Suspension shaft 62 ... Protrusion 64 ... Notch

Claims (1)

(57) [Claims] 1. A device comprising: a device main body housed in a case of an electronic device; a suspension body having one end fixed to a tip of a suspension arm rotatably attached to the case and the other end locked to the device main body; A suspension spring switching mechanism for an electronic device, wherein the suspension arm is held by a spring, and the angle of the suspension arm is changed according to the installation angle of the case to change the mounting angle of the suspension spring. A suspension shaft, which is formed so as to be movable in the axial direction so as to take a locked position and an unlocked position, so that the suspension arm does not move at least in the rotation direction. The suspension shaft is fixed between the suspension shaft and the case. A locking means for restricting the rotation of the suspension shaft with respect to the case at a plurality of positions when the suspension shaft is at the locking position, and a biasing means for constantly biasing the suspension shaft to the locking position. A suspension spring switching mechanism for an electronic device, characterized in that: