JPS6342540Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an anti-theft device for a vehicle-mounted radio.

In-vehicle radios are detachably attached to the dashboard of an automobile via a metal holding frame called a mount, so there is a risk that they may be easily removed. To prevent this, as illustrated in FIGS. 1 and 2, a key lock device 2 is provided on the side plate of the mount 1, and the hook 3 of the key lock device 2 is inserted into the locking groove of the radio 4. Mount 1 is generally U-shaped, so it can be easily destroyed by gouging the side plate outward as shown by the arrow in Figure 2. The disadvantage is that it can be done. Therefore,
When using this type of key lock device, the mount itself must be made of die-cast material instead of the conventional sheet metal to increase its rigidity, or it must be configured into a box shape, which is unfavorable in terms of productivity and cost. Additionally, in the past, the key lock device was pre-designed so that it could be installed only on one side plate of the mount, so if it was installed in a narrow space near the dash board, especially in a corner, the key lock device could not be installed. In some cases, the device was in the way and could not be installed in a good manner.

Therefore, the purpose of this invention is to have enough sturdiness to be applicable to a simple U-shaped mount made of sheet metal processing, and also to be able to attach the key lock member to either the left or right side plate of the mount. An object of the present invention is to provide an anti-theft device for a vehicle-mounted radio that can be installed on a vehicle.

Hereinafter, embodiments of this invention will be described in detail with reference to the accompanying drawings.

Referring to FIGS. 3 and 4, this anti-theft device includes a lock member 12 including a conventional cylinder lock 11, and a radio 1 within a mount 13.
4, and a bolt 15 that is selectively set in an unrotatable state by the lock member 12. In this case, the lock member 12 is built in a case 16, and the case 16 It is designed to be attached to the side plate portion 17 of the mount 13 via. In addition, in this example,
The mount 13 is constructed as a substantially U-shaped metal frame having a pair of left and right side plates 17, and a recess 18 is provided at the front edge of the side plate 17 to guide the mounting position of the case 16. There is. The case 16 has hooks 19, 19 that engage with the front edge of the side plate portion 17, and female hooks that cooperate with the male screw 24 when the side plate portion 17 is screwed from inside the side plate portion 17 with the male screw 24 as shown in the figure. It includes a mounting flange 21 having a screw hole 20 and a through hole 22 through which the bolt 15 is inserted. Although this drawing only shows one mounting flange 21 provided on the lower wall side of the case 16, in reality, a similar mounting flange 21 is provided on the upper wall side so as to be symmetrical with this. is provided. On the other hand, the side plate part 17 of the mount 13 has a through hole 23 bored to match the through hole 22 and an insertion hole 25 for a male screw 24, and has an outer side to hide the screw head. Pedestals 26, 26 are provided, which are cut and raised toward. In this case, each of the mounting flange 21 and the pedestal 26 is arranged vertically symmetrically across a virtual horizontal plane that includes the axes of the through holes 22 and 23, so that the case 16 is attached to the mount 1.
It can be attached to either the left or right side plate of No. 3. However, in this embodiment, there are two mounting flanges 21 and two pedestals 26 corresponding to each side plate portion 17 of the mount 13.
Although each set is provided, the case member 16 can be attached to either the left or right side plate portion even if only one set is used. As is well known, the radio 14 is inserted into the mount 13 while being guided by guide rails 27, 27.
Female threaded holes 28, 28 into which bolts 15 are screwed are coaxially provided on both side walls thereof. In addition,
In this invention, a notch 3 is cut out approximately in the center of the axis of the bolt 15 in parallel with the axis.
4 is formed.

The lock member 12 includes a lock ring 32 that is rotatably mounted around the outer cylinder 30 of the cylinder lock 11, and a switching plate 3 that selectively switches the lock ring 32 between a lock position and an unlock position.
3. The lock ring 32 has an arm 35 that extends so as to be able to come into contact with the bottom wall of a notch 34 formed in the shaft of the bolt 15, and when this arm 35 acts on the notch 34, it touches the bottom wall of the case 16. It has a stopper plate 36 that comes into contact with it and prevents the arm 35 from rotating in a specific direction, that is, in this embodiment, counterclockwise in FIG. Also,
This lock ring 32 has a tongue piece 37 that projects in the opposite direction to the arm 35, and is biased to rotate by a coil spring 39 via this tongue piece 37. That is, in this embodiment, the coil spring 39 has a pair of working ends 39a and 39b drawn out in a tangential direction from its winding end,
One working end 39a is locked to the tongue piece 37,
The other working end 39b is locked to a spring receiving piece 38 provided on the inner wall side of the case 16 facing the tongue piece 37. Therefore, this coil spring 39 is
When the locking ring 32 is selectively rotated between the locking position and the unlocking position by the switching plate 33,
Climb over the neutral point and reverse, lock ring 3
2 are rotated in opposite directions. Switching plate 3
3 is connected to the inner cylinder 31 of the cylinder lock 11 by screws 41, 41 so as to rotate therewith, and acts on the arm 35 to rotate the lock ring 3.
Two pins 42a, 42b for rotating 2
It is equipped with In this case, each pin 42a, 42b
The inner cylinder 3 is
The pins 42a are arranged at a predetermined angle, approximately 90 degrees in this embodiment, about the axis of the arm 35 when the lock ring 32 is rotated from the unlocked position to the locked position.
It touches the top side of and pushes it down,
The other pin 42b is connected to the arm 3 when the lock ring 32 is rotated from the lock position to the unlock position.
It comes into contact with the lower side of 5 and pushes it up. Note that reference numeral 43 is a guide ring for positioning the switching plate 33 with respect to the lock ring 32. Further, as shown in FIG. 3, the cylinder lock 11 has three positions: a neutral position where the key 44 can be inserted and removed, a locked position, and an unlocked position.
A device with two positions is used.

Next, the operation of this invention will be explained. Depending on the location where the mount 13 is attached, the case member 16
is attached to either the left or right side plate portion 17.
In that case, after the case member 16 is attached so that its hook 19 can be hooked into the recess 18,
Since the side plate portion 17 is tightened and fixed from the inside with a male screw 24, when the radio 14 is inserted into the mount 13, the case member 16 cannot be removed by loosening the male screw 24. I can't. To insert the radio 14 into the mount 13 and lock the key, first insert the key 44 into the cylinder lock 11 and turn it to the unlocked position. As a result, the lock ring 32 is rotated clockwise via the arm 35 by the pin 42b of the switching plate 33, and is placed in the unlocked position where the arm 35 is lifted upward, as shown in FIG. In connection with this operation, the coil spring 39 exceeds its neutral point and rotates downward around the active end on the side of the spring receiving piece 38, elastically holding the lock ring 32 in a clockwise rotated state. . Next, bolt 1
5 into the mount 13 side through the through holes 22 and 23, and insert the male screw into the female screw hole 2 of the radio 14.
8 and tighten the radio 14 to the mount 13. Thereafter, the anti-theft device is set to the locked state by turning the key 44 to the locked position, returning it to the neutral position, and pulling out the key 44. That is, when the key 44 is turned from the unlocked position to the locked position, the lock ring 32 is rotated counterclockwise by the pin 42a of the switching plate 33 via the arm 35, and is brought into the state shown in FIG. At this time, the coil spring 39 is rotated upward beyond the neutral point from the state shown in FIG.
The lock ring 32 is urged to rotate counterclockwise. Therefore, the arm 35 is connected to the bolt 15
However, when turning the bolt 15 in the tightening direction (counterclockwise in FIGS. 5 and 6), it is lifted by the corner of the notch 34. , it does not function as a stopper. However, when an attempt is made to unfasten the radio device 14 by turning the bolt 15 clockwise in the opposite direction, the arm 35 comes into contact with the bottom wall of the notch 34 of the bolt 15, as shown in FIG. At the same time, the key 44 attempts to rotate downward (counterclockwise), but the stopper plate 36 contacts the lower wall of the case 16 and prevents further rotation, so the key 44 is inserted into the cylinder lock 11. The bolt 15 cannot be unscrewed unless the arm 35 of the lock ring 32 is returned to the state shown in FIG. 5 by turning it to the unlocked position. This makes it possible to prevent the radio device 14 from being stolen.

Note that the cylinder lock 11 is not limited to the one described above, and it is also possible to use a cylinder lock that allows the key to be inserted and removed in the locked position or the unlocked position.
Although the spring is biased by a leaf spring, this may be replaced by a leaf spring. Moreover, although the notch 34 is provided in the shaft of the bolt 15, it goes without saying that the shaft may be formed into a polygonal shape. On the other hand, as shown by the imaginary line in FIG.
By providing the protruding piece 50 at a portion approximately 90 degrees away from the switching plate 5, one pin 42b of the switching plate 33 can be omitted and the lock ring 32 can be rotated using only the other pin 42a.

As is clear from the above description of the embodiment, according to this invention, the wireless device is key-locked within the mount using bolts, so even if the side plate of the mount is gouged out, the The key lock is never released, and theft of the radio can therefore be effectively prevented. Further, since it can be easily applied to a U-shaped simple mount made of sheet metal processing without making any major design changes, it is extremely advantageous in terms of productivity and cost. In addition, the case member containing the key lock member can be attached to either the right side or left side of the mount, so it can be easily installed depending on the location where the mount is installed. By reattaching the case member to the mount, the mount can be attached to the mounting location in an attractive manner.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a conventional example, Fig. 2 is a partial sectional view thereof, Fig. 3 is an exploded perspective view showing an embodiment of this invention, Fig. 4 is an exploded perspective view of the main parts, 5 to 7 are operation explanatory diagrams. In the figure, 11 is a cylinder lock, 12 is a lock member, 13 is a mount, 14 is a radio, 15 is a bolt, 16 is a case, 17 is a side plate, 18 is a recess,
19 is a hook, 21 is a mounting flange, 22, 23
3 is a through hole, 30 is an outer cylinder, 31 is an inner cylinder, 32 is a lock ring, 33 is a switching plate, 34 is a notch, 35 is an arm, 36 is a stopper plate, 39 is a coil spring, 4
2 is a pin.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) An anti-theft device for a vehicle-mounted radio that selectively locks the radio in a U-shaped mount installed in the interior of an automobile so that the radio cannot be removed, which A pair of left and right female screw holes coaxially formed on both side walls of the radio, and a pair of left and right female screw holes formed on both sides of the mount so as to match the female screw holes at a predetermined mounting position of the radio in the mount. a case member for mounting the lock member on the outside of the side plate; a first through hole bored in each of the case members so as to be positioned coaxially with the first through hole; The second through hole extends through the first and second through holes so that it can be screwed into the female threaded hole, and cooperates with the lock member to prevent rotation in a specific direction. a bolt having an engaging means, between the case member and each side plate of the mount,
Attachment means is provided on either the left or right side of the case member for coaxially positioning the second through hole with respect to the first through hole and attaching the case member to the mount. An anti-theft device for vehicle-mounted radios. (2) In the utility model registration claim (1), the attachment means includes a hook formed on the case member side so as to be engaged with the front edge of the side plate, and a hook that is attached to the side plate within the case member. It consists of a mounting flange having female threaded holes provided to face each other, and a male thread that is screwed into the female thread of the mounting flange from inside the mount through a screw insertion hole formed in the side plate. Features: Anti-theft device for vehicle-mounted radios. (3) The vehicle-mounted radio device according to claim (2) of the utility model registration, characterized in that a recess for positioning the case member via the hook is formed in the front edge of the side plate. anti-theft device. (4) Theft of a vehicle-mounted wireless device according to claim (2) for utility model registration, characterized in that the screw insertion hole is formed in a pedestal portion cut and raised outward from the side plate. Prevention device. (5) In claim (2) of the utility model registration, the end of the hook and the head of the male screw are covered by the casing of the radio that is inserted into the mount. Features: Anti-theft device for vehicle-mounted radios.