JPH0366834B2 - - Google Patents

Description

[Detailed Description of the Invention] [Summary] Insert the guide groove of the electronic device into the guide rail of the mounting bracket, and while it is slid and installed, rotate the camshaft and press the leaf spring using the eccentric cam. Then, the electronic device is fixed by engaging the jaws of the leaf spring with the engaging recesses provided in the housing.

Further, by rotating the camshaft and returning the leaf spring, the engagement between the jaw and the engagement recess is released, making it easy to remove the electronic device.

[Industrial application field]

The present invention relates to improvements in the attachment/detachment structure of relatively small electronic devices, such as in-vehicle radios, in-vehicle telephones, or electronic units inserted into electronic devices.

An electronic device 6 such as an in-vehicle radio, an in-vehicle telephone, or an electronic unit to be inserted into an electronic device is mounted on a vehicle or a device body using a mounting bracket 3 having a guide rail 5, as shown in FIG. 4, for example. It is fixed to the plate 1 and removably attached to the guide rail 5.

To be more specific, the mounting bracket 3 is configured in a reverse channel shape, and a pair of opposing guide rails 5 are provided by bending the lower edges of the side members 4 on both sides inward at right angles. The mounting bracket 3 is suspended from the mounting plate 1 by means of mounting bolts 2, with the upper surface of the bottom plate being in close contact with the lower surface of the mounting plate 1.

The electronic device 6 is housed in a box-shaped housing 7 that has a low height and a width that is desirably smaller than the width of the mounting bracket 3.
A guide groove 9 into which the guide rail 5 fits is provided in the housing side plate 8 in parallel with the bottom plate of the housing 7.

This guide groove 9 is fitted into the guide rail 5, and the electronic device 6 is slid and inserted into the mounting bracket 3. Then, a locking mechanism section 10 is attached to the outside of one side member 4, and by a locking means (not shown),
The housing 7 and the mounting bracket 3 are engaged to fix the electronic device 6 at a predetermined position.

In the illustrated example, the mounting bracket 3 is installed facing downward, but it is also possible to install the mounting bracket 3 upward or horizontally, and to install the electronic device 6 horizontally above the mounting bracket 3, or to install it vertically. Sometimes I do.

At this time, there is a strong desire to be able to easily attach and detach electronic devices to mounting fittings.

[Conventional technology]

FIG. 5 is a configuration diagram showing a conventional attachment/detachment structure, and FIG. 6 is a plan sectional view of the conventional example.

In FIGS. 5 and 6, bolt holes 2A are provided in the bottom plate of the mounting bracket 3, and the mounting bracket 3 is fixed to the mounting plate with a mounting bolt (not shown).

An engaging part storage box 11 is attached to the outer front part of one side member 4 of the mounting bracket 3.
1 accommodates a locking mechanism section 10.

The engagement mechanism section 10 includes a leaf spring 20 with an inverted square tip.
The main components are a push-up claw 14 that opens the tip of the leaf spring 20 outward against elasticity, and a shaft 13 having a knob 13A at the lower end and to which the push-up claw 14 is fixed.

The leaf spring 20 has an inverted dog-shaped tip corner 20B,
The base is fixed to the outer surface of the side member 4 so as to come into elastic contact with the side wall of the housing side plate 8 through the window provided in the side member 4. Further, an extending portion bent outward from the corner portion 20B of the leaf spring 20 is provided in the engaging portion storage box 11, and a warped tongue piece 20A that is curved downward and outward is provided at the lower part of this extending portion.

A square hole 12B is provided in the box bottom plate 12 of the engaging portion storage box 11, through which the square shaft portion of the shaft 13 perpendicularly passes.
The upper tip of the shaft 13 is loosely passed through the hole 16A of the support plate 16 provided horizontally in the engaging portion storage box 11.
is mounted vertically in the engaging portion storage box 11. Further, a knob 13A is provided at the tip of the square shaft portion that protrudes below the box bottom plate 12.

In the part of the shaft 13 located above the box bottom plate 12,
It has an L-shape in side view, and a push-up claw 14 is fixed to the upper end surface of the vertical member, which is inclined outwardly. The upper end surface of this push-up pawl 14 is located below the warped tongue piece 20A of the leaf spring 20.

A compression coil spring 15 is attached to the shaft 13 between the support plate 16 and the push-up claw 14, and the elasticity of the compression coil spring 15 constantly presses the shaft 13 downward, so that when the electronic device 6 is attached, The push-up claw 14 is configured to be separated from the warped tongue piece 20A.

On the other hand, a leaf spring 42 is mounted inside the back member 41 of the mounting bracket 3, as shown in FIG. 6, to make elastic contact with the back plate portion of the housing 7.

In addition, with the electronic device 6 inserted into the mounting bracket 3 and the leaf spring 42 in contact with the back plate portion of the housing 7,
An engagement recess 81 is provided in a portion of the housing side plate 8 corresponding to the corner 20B of the leaf spring 20.

Since the locking mechanism part 10 is configured as described above, when the guide groove 9 is fitted into the guide rail 5 and the electronic device 6 is pushed in, the corner part 20B will be attached to the housing side plate 8.
While the electronic device 6 is in elastic contact with the side wall of the mounting bracket 3
It is inserted by sliding it inside.

Then, at the position where the back plate of the housing 7 comes into elastic contact with the leaf spring 42, the corner portion 20B of the leaf spring 20 is pushed into the engagement recess 81 and engaged. Therefore, the electronic device 6
There is no risk that the metal will slip out of the mounting bracket 3.

To remove the electronic device 6, push up the knob 13A portion by hand. As a result, the push-up claw 14 rises and comes into contact with the warped tongue piece 20A. When the shaft 13 is further pushed up, the tip of the leaf spring 20 opens outward using the base as a fulcrum. Therefore, the corner 20
B is removed from the engagement recess 81, and the engagement between the corner 20B and the engagement recess 81 is released. Therefore, when the electronic device 6 is pulled out toward the front side, the electronic device 6 can be pulled out from the mounting bracket 3.

[Problem that the invention seeks to solve]

However, in the above-mentioned conventional attachment/detachment structure, when removing the electronic device 6, the shaft 13 must be pushed up with one hand and held in that state, and the electronic device 6 must be pulled out with the other hand. There is a problem in that the removal work is difficult because it cannot be held in place.

Further, since the leaf spring 20 is engaged in the engagement recess 81 with the pushing force of elasticity alone, if the elasticity becomes weaker due to long-term use, for example, there is a risk that the electronic device 6 may slip out due to vibration of the device or the like. .

[Means for solving problems]

The present invention for solving the above conventional problems,
As shown in FIG. 1, a guide groove 9 is provided in the housing 7 of the electronic device 6 in order to attach the electronic device 6 to the mounting bracket 3.
is inserted into the guide rail 5 provided on the mounting bracket 3, and with the electronic device 6 pushed in to a predetermined position, attach the removable structure for fixing the electronic device 6 to the tip of the housing side plate 8 at a predetermined position. A leaf spring 50 having a jaw portion 50B that engages with the provided engagement recess 81 and whose base is fixed to the side member 4 of the mounting bracket 3;
A camshaft 30 is pivotally supported on the mounting bracket 3 side at a position corresponding to the housing side plate 8 across 0, and an eccentric cam 31 is fixed to the camshaft 30 in a position corresponding to the leaf spring 50.
The configuration includes the following.

By rotating the camshaft 30, the eccentric cam 31 presses the leaf spring 50, and the jaw portion 50B engages with the engagement recess 81.

[Effect]

According to the above means of the present invention, the electronic device 6 is pushed to the stopper position provided on the mounting bracket 3. Then, when the knob 35 fixed to the end of the camshaft 30 is grasped and the camshaft 30 is rotated approximately 90 degrees, the convex surface of the eccentric cam 31 pushes the tip of the leaf spring 50 toward the side plate 8 of the housing, and the jaws 50B is engaged with the engagement recess 81.

Therefore, the electronic device 6 will not fall out from the mounting bracket 3.

Furthermore, when removing the electronic device 6, the camshaft 30 is further rotated approximately 90 degrees from the rotation angle in the engaged state. As a result, the convex surface of the eccentric cam 31 comes off from the leaf spring 20, and the leaf spring 20 returns to its original position due to its elasticity. As a result, the jaw portion 50B engages with the engaging recess 81.
The plate spring 20 and the engagement recess 81 are disengaged from each other.

Even if you take your hand off the knob 35 in this state, the released state is maintained. Therefore, the electronic device 6 can be pulled out from the mounting bracket 3 using, for example, both hands.

That is, it is easy to attach and detach the electronic device 6, and the elasticity of the leaf spring 50 is necessary only for the return operation, so even if the elasticity is weak, it does not affect the attachment, and the reliability of fixing the electronic device 6 is high.

〔Example〕

The present invention will be specifically described below with reference to the drawings. Note that the same reference numerals indicate the same objects throughout the figures.

Fig. 1 is a configuration diagram of one embodiment of the present invention, Fig. 2 is a diagram showing the operation of the present invention, a is a sectional view when attached and detached,
b is a cross-sectional view when engaged, and FIG. 3 is an inclined view of the stopper portion of the present invention.

In FIG. 1 and FIG. 2, a long bolt hole 2A is provided in the bottom plate of the mounting bracket 3 to provide an allowance at a position where the mounting bracket 3 is fixed to the mounting plate.

A locking portion storage box 11 is attached to the front outside of one side member 4 of the mounting bracket 3, and the locking mechanism portion 10 is housed in the locking portion storage box 11.

The engagement mechanism section 10 is configured to fit a leaf spring 50 having a jaw 50B having a rectangular tip and push the jaw 50B into an engagement recess 81 provided in the housing side plate 8 against the elasticity of the leaf spring 50. The main components are an eccentric cam 31 and a cam shaft 30 that is pivotally supported by the engaging portion storage box 11 and to which the eccentric cam 31 is fixed.

The base of the leaf spring 50 is fixed to the outer surface of the side member 4 such that the jaw portion 50B at the square tip is exposed to the housing side plate 8 through a window provided in the side member 4.

A camshaft 30 is attached to the box bottom plate 12 of the engaging portion storage box 11.
A square hole 12B is provided through which the square shaft portion 33 of the camshaft 30 vertically passes, and the tip of the thin rod-shaped upper portion of the camshaft 30 is inserted into the hole 1 of the support plate 16 horizontally provided in the engaging portion storage box 11.
The camshaft 30 is vertically mounted in the engaging portion storage box 11 by allowing the camshaft 6A to pass through freely.

The camshaft 30 has an oval knob 35 fixed to the lower end of a handle 34 that protrudes downward from the square hole 12B. Further, a square shaft part 33 in which the handle 34 is inscribed is formed on the upper part of the handle 34, and a circular shaft part 32 having a diameter larger than the diagonal of the square shaft part 33 is formed on the upper part of the square shaft part 33. At the upper end surface portion of the shaft portion 32,
An eccentric cam 31 is fixed perpendicular to the shaft.

A compression coil spring 15 is attached to the camshaft 30 between the support plate 16 and the eccentric cam 31, and the elasticity of the compression coil spring 15 constantly presses the camshaft 30 downward, so that the lower part of the circular shaft portion 32 The end face is the box bottom plate 12
The square shaft portion 33 is adapted to engage with the square hole 12B. Therefore, knob 35
When pushed up, the camshaft 30 slides upward, and the square shaft portion 33 comes out above the square hole 12B. Therefore, by rotating the knob 35, the camshaft 3
0, that is, the eccentric cam 31 can be rotated.
That is, the camshaft 30 is rotatable and slidable in the vertical direction.

Note that the mounting position of the eccentric cam 31 is the leaf spring 5.
The height is approximately equal to the height of 0.

On the other hand, as shown in FIG. 3, the open end of the guide groove 9 provided in the housing side plate 8 in parallel with the bottom surface of the housing 7 is formed into a tapered end 9A, and the open end of the guide groove 9 is formed in the lower edge of the side member 4 of the mounting bracket 3. The guide rail 5, which is formed by bending the holder, is provided with a locking protrusion 5A near the rear.

Therefore, when the electronic device 6 is inserted into the mounting fitting 3, the tapered end 9A comes into contact with the locking protrusion 5A and functions as a stopper, thereby regulating the insertion position of the electronic device 6.

When the electronic device 6 is inserted into the mounting bracket 3 and the tapered end 9A is in contact with the locking protrusion 5A, the engagement recess 81 is inserted into the side wall of the housing side plate 8 at a position corresponding to the jaw 50B of the leaf spring 50. is provided.

Since the locking mechanism section 10 is configured as described above, when the guide groove 9 is inserted into the guide rail 5 and the electronic device 6 is pushed in, as shown in FIG. 2a,
Since the square shaft portion 33 is engaged with the square hole 12B, the cam shaft 30 is held with the convex surface of the eccentric cam 31 facing in a direction parallel to the leaf spring 50.

Therefore, the jaw portion 50B of the leaf spring 50 is located apart from the side wall of the housing side plate 8, and the sliding movement for inserting and removing the electronic device 6 is smooth.

The tapered end 9A of the guide groove 9 is the locking protrusion 5A.
After the electronic device 6 has been pushed in, the camshaft 30 is operated to fix the electronic device 6, as shown in FIG. 2b.

To explain in detail, hold the knob 35 and press the camshaft 30.
is pushed up to release the engagement between the square shaft portion 33 and the square hole 12B, and then the knob 35 is rotated 90 degrees to rotate the camshaft 30, that is, the eccentric cam 31 by 90 degrees.
As a result, the convex surface of the eccentric cam 31 presses the leaf spring 50, and the jaw portion 50B of the leaf spring 50 is inserted into and engaged with the engagement recess 81.

In this state, when you release your hand from gripping the knob 35, the camshaft 30 is moved by the elasticity of the compression coil spring 15.
is lowered, and the square shaft portion 33 engages with the square hole 12B at a position rotated by 90 degrees from the original position.

Therefore, since the eccentric cam 31 does not rotate, the jaw portion 50B does not come out of the engagement recess 81. That is, even if the vehicle or equipment to which the mounting bracket 3 is fixed vibrates, the electronic device 6
There is no fear that the electronic device 6 will slip out of the mounting bracket 3, and the reliability of fixing the electronic device 6 is high.

In addition, when removing the electronic device 6 from the mounting bracket 3, once the camshaft 30 is pushed up, the square shaft portion 3
3 and the square hole 12B, rotate the camshaft 30 90 degrees in this state, release your hand, and remove the camshaft 30.
0 is lowered, and the square shaft portion 33 is engaged with the square hole 12B. After that, the electronic device 6 is pulled out.

In this manner, both hands can be placed on the electronic device 6 when the electronic device 6 is attached or detached, and the electronic device 6 can be handled safely.

The location of the attachment mechanism of the present invention is not limited to the illustrated example; for example, it can be attached to the bottom plate of the mounting bracket 3, and the camshaft 30 can be attached to the electronic device 6. It can be carried out by mounting parallel to the insertion direction without being perpendicular to the insertion direction.

〔Effect of the invention〕

As described above, the present invention has excellent effects when applied to an electronic device that is mounted by sliding on a guide rail, such as easy attachment/detachment operation and high reliability in fixing the electronic device.

[Brief explanation of drawings]

Figure 1 is a configuration diagram of an embodiment of the present invention, Figure 2 is a diagram showing the operation of the present invention, where a is a sectional view when attached and detached, and b
3 is a perspective view of the stopper portion of the present invention, FIG. 4 is a perspective view of the electronic device, FIG. 5 is a configuration diagram of the conventional example, and FIG. 6 is a plan cross-section of the conventional example. It is a diagram. In the figure, 3 is a mounting bracket, 4 is a side member, and 5 is a mounting bracket.
1 is a guide rail, 6 is an electronic device, 7 is a housing, 8 is a housing side plate, 9 is a guide groove, 10 is a locking mechanism part, 1
1 is a locking part storage box, 12 is a box bottom plate, 12B is a square hole, 15 is a compression coil spring, 20 and 50 are leaf springs, 30 is a cam shaft, 31 is an eccentric cam, 33 is a square shaft portion, 13A, 35 Knob, 50B is jaw, 81
1 and 2 respectively indicate engagement recesses.

Claims (1)

[Scope of Claims] 1. In order to attach the electronic device 6 to the mounting bracket 3, the guide groove 9 provided in the housing 7 of the electronic device 6 is inserted into the guide rail 5 of the mounting bracket 3 and fixed at a predetermined position. The mechanism includes: a leaf spring 50 having a jaw 50B at its tip and whose base is fixed to the mounting bracket 3; a camshaft 30 pivotally supported on the third side; and an eccentric cam 31 fixed to the camshaft 30 in correspondence with the leaf spring 50; by rotating the camshaft 30, the eccentric cam 31 presses the leaf spring 50 to release the jaw 5
An attachment/detachment structure for an electronic device, characterized in that the 0B is configured to engage with an engagement recess 81 provided in the housing 7.