JPH087557Y2 - Autochanger magazine lock mechanism - Google Patents

Description

[Detailed Description of the Invention] [Outline] A lock lever pivotally provided below the bottom wall of the autochanger body in order to lock the magazine inserted in the autochanger body at a predetermined position,
A spring for urging the lock lever in the direction of engaging the magazine, and a cam having an arc-shaped cam surface engageable with the lock lever for releasing the lock when the magazine is discharged; Drive means for driving the cam are provided.

[Industrial application field]

The present invention relates to a magazine lock mechanism for an autochanger.

[Conventional technology]

The CD autochanger has an autochanger body installed in the trunk of an automobile, and can be operated by an operation unit arranged around the driver's seat. The autochanger body has a box-like shape, and inside the autochanger body, a magazine containing a plurality of CD discs and a reproducing unit for taking out and reproducing the CD discs from the magazine are stored. The magazine can be ejected from the main body of the autochanger for exchanging CD discs, and can be reinserted after ejecting. When the magazine is inserted into the main body of the autochanger, the magazine is locked by the lock lever, and the lock is released the next time the magazine is ejected.

As shown in FIG. 9, the magazine lock mechanism of the conventional auto changer has a lock lever 2 rotatable around a shaft 1, and the lock lever 2 is provided with a locking claw portion 3 projecting upward. When the lever 2 pivots upward by the spring force, the locking claw portion 3 locks the magazine. In order to release the lock, it is necessary to rotate the lock lever 2 downward against the spring force, and for this purpose, the lock release lever 4 and the lock release cam 5 are provided. The lock release lever 4 moves in the direction of arrow A in accordance with the rotational movement of the lock release cam 5, and the cam surface 6 provided at the tip of the lock release lever 4 turns the lock lever 2 downward.

[Problems to be solved by the device]

The above-described magazine lock mechanism of the autochanger requires the lock release lever 4 and the lock release cam 5 to release the lock, the lock release cam 5 is provided with a cam groove, and the lock release lever 4 is provided with a cam follower. And a relatively complicated mechanism such as providing an additional cam surface 6 was required.

An object of the present invention is to provide a magazine lock mechanism for an autochanger that has a lock release mechanism that reduces the number of parts and simplifies the mutual structure of the parts.

[Means for solving the problem]

A magazine lock mechanism of an autochanger according to the present invention includes a lock lever pivotally provided so as to be engageable with a magazine through an opening provided in one of the wall surfaces of the autochanger into which the magazine is inserted, A spring for urging the lock lever in a direction to engage with the magazine, a lock release cam having an arcuate cam surface engageable with the lock lever, a drive means for driving the lock release cam, and the magazine An opening through which the lock lever is passed at a lock position and a rack, and a magazine discharge lever reciprocally movable between the lock lever and the magazine; and a rack provided on the magazine discharge lever, A gear that engages to drive the magazine ejection lever is provided on a shaft common to the unlock cam. It is intended.

[Action]

In the above structure, the unlock cam has an arcuate cam surface, and the cam surface engages the lock lever to push the lock lever downward to unlock the magazine. Then, in the complementary arc portion (blank portion) of the cam surface, the unlock cam does not engage with the lock lever.
Therefore, due to the rotational movement of the unlocking cam, the locking lever achieves the lock of the magazine when the unlocking cam is in the position where it does not engage with the locking lever, and then the unlocking cam is unlocked when the unlocking cam is rotated a predetermined angle. The cam can be engaged with the lock lever to unlock the magazine. Further, the magazine ejection lever is located between the lock lever and the magazine and can reciprocate. The rack provided on the magazine ejection lever engages with a gear provided on the shaft common to the unlock cam, thereby driving the magazine ejection lever. This reduces the number of parts and simplifies the structure of parts.

〔Example〕

 The present invention will be described below based on embodiments.

The autochanger body 10 is formed in a box shape as a whole as shown in FIG. 8, for example, and has a magazine insertion port 11. The arrow X indicates the insertion direction of the magazine. FIG. 1 is a view showing components attached to a bottom wall 12 inside an autochanger body 10 according to an embodiment of the present invention by removing an upper covering portion of the autochanger body 10. Inside the autochanger body 10, the storage compartment for the magazine 14
There are 16 and a reproducing section 17 provided on the right side thereof. FIG. 7 is a bottom view of the magazine 14. The magazine 14 is provided with a pair of guide grooves 14a, and these guide grooves 14a engage with guides (not shown) provided on the bottom wall 12, The magazine 14 is inserted along the bottom wall 12. In addition, a lock recess 14b is provided on the bottom surface of the magazine 14.

A magazine ejection lever 18 is provided on the bottom wall 12 of the autochanger body 10, and a cam gear 20 and a lock lever 22 are provided below the bottom wall 12. However, the bottom wall 12
Is almost flat, but partly has a stepped upper wall 12a
Formed as. That is, as shown in FIGS. 1 and 6, the wall 12 of the portion of the bottom wall 12 where the cam gear 20 is located.
The position a is located above the reference plane of the bottom wall 12 by the slits surrounding the three sides and the other one of the inclined walls. Therefore, the cam gear 2 located below the stepped wall 12a
The upper part of 0 is located at the same level as the magazine ejection lever 18, and these can be engaged with each other.

The magazine ejection lever 18 is a slide lever that can reciprocate, and has a pair of parallel straight guide grooves 18a. The guide pin 24 is attached upward from the bottom wall 12 and inserted into the guide groove 18a. Therefore, the magazine ejection lever 18 can reciprocate in the linear direction shown by the arrow X in FIG. The magazine ejection lever 18 has a magazine engaging portion 18b protruding upward at its tip, and the tip of the bottom surface of the magazine 14 engages with this magazine engaging portion 18b when the magazine 14 is inserted in the direction of arrow X. When the magazine 14 is pushed in, the magazine ejection lever 18 is also pushed in.

The magazine ejection lever 18 is composed of a two-layer plate-shaped gear lever 26 and a base lever 28 (FIG. 4) which are vertically arranged. The gear lever 26 and the base lever 28 have substantially the same shape and are integrated by a spring 30. Has been done. A rack 32 is formed on the gear lever 26. The guide groove 18a is provided in the gear lever 26 and the base lever 28 in the same shape and at a position overlapping with each other. The gear lever 26 and the base lever 28 are further provided with straight elongated holes 34 at their central portions in the same shape and at overlapping positions. In addition, the base lever 28
Is urged toward the bottom wall 12 by the spring 36 in the discharge direction.

3 and 4 show the lock lever 22. The lock lever 22 is arranged below the bottom wall 12 in the region of an opening 38 in the bottom wall 12. Flange 40 extends downward from both sides of the opening 38 of the bottom wall 12, a support shaft 42 of the lock lever 22 is mounted between the flanges 40 on both sides in parallel with the bottom wall 12, and the lock lever 22 is attached to the support shaft 42. It can be turned around. An end portion of the lock lever 22 opposite to the support shaft 42 is a locking claw portion 44 extending upward and having a curved surface. A control shaft 46 is attached to an intermediate portion of the lock lever 22 in parallel with the support shaft 42, and the control shaft 46 extends toward the cam gear 20. Further, the spring 48 biases the lock lever 22 upward with respect to the bottom wall 12.

The lock lever 22 has a width slightly smaller than the opening portion 38 of the bottom wall 12, and the locking claw portion 44 can project above the bottom wall 12 through the opening portion 38. There is a magazine ejection lever 18 on the bottom wall 12, and a locking claw 44 is a base lever that is a lower component of the magazine ejection lever 18.
Hit 28. When the magazine ejection lever 18 moves and the central long hole 34 comes to the position of the locking claw portion 44,
The locking claw portion 44 projects further upward through the elongated hole 34,
Hits the bottom of magazine 14. As shown in FIG.
A recess 14b is provided at the bottom of the magazine 14, and when the recess 14b of the magazine 14 reaches the position of the locking claw 44, the locking claw 44 moves up and engages with the recess 14b of the magazine 14. In this way, the magazine 14 is locked by the lock lever 22 in the insertion position.

As shown in FIGS. 5 and 6, the cam gear 20 is formed by integrally forming three members together with the shaft 50 rotatably mounted on the stepped wall 12a of the bottom wall 12 described above. . A semi-broken gear 52 is provided at the top, a driven gear 54 is provided in the middle, and an arcuate cam surface 56 is provided at the bottom.
An unlocking cam 56 having a is provided. The half-chipped gear 52 can be engaged with the rack 32 of the magazine ejection lever 18 as described above. The driven gear 54 is driven by a motor (not shown) via an intermediate gear 58, etc.
56 can be connected to the control shaft 46 of the lock lever 22. The lock release cam 56 pushes down the control shaft 46 of the lock lever 22 when it rotates clockwise in FIGS. 1 and 6, so that the locking claw portion 44 of the lock lever 22 is pulled out from the recess 14b of the magazine 14, It is designed to unlock.

 Next, the operation will be described.

FIG. 2 shows the magazine ejection lever 18 in the ejection position. The locking claw portion 44 of the lock lever 22 hits the base lever 28 of the magazine ejection lever 18 and is in the unlocked position, which is lowered downward. The semi-chipped gear 52 of the cam gear 20 is located away from the rack 32 and
56 is also located away from the control shaft 46 of the lock lever 22.
At this ejecting position, when the magazine 14 is inserted in the direction of the arrow X, the leading end of the magazine 14 engages with the magazine engaging portion 18b, and when the magazine 14 is further pushed in, the magazine ejecting lever 18 is also pushed in at the same time. Magazine in this way
When 14 and the magazine ejection lever 18 are pushed in at the same time, the elongated hole 34 of the magazine ejection lever 28 comes to a position above the lock lever 22. Then, the lock lever 22 projects upward through the elongated hole 34 and hits the bottom of the magazine 14. Then, when the concave portion 14b of the magazine 14 comes to a position above the locking pawl portion 44 of the lock lever 22, the locking pawl portion 44 causes the spring 48 to move.
Is engaged with the recess 14b of the magazine 14 by the spring force of
Is locked by the lock lever 22.

FIG. 1 shows the magazine ejection lever 18 in the insertion position. During the insertion process from FIG. 2 to FIG. 1, the cam gear 20 is not driven, the half-chipped gear 52 of the cam gear 20 is located away from the rack 32, and the unlock cam 56 also controls the control shaft 46 of the lock lever 22. It is located away from. The rack 32 of the magazine ejection lever 18 is stopped at a position past the half-missing gear 52 of the cam gear 20. Here, when there is a magazine ejection signal, the driven gear 54 of the cam gear 20 is driven, the lock release cam 56 rotates and engages with the control shaft 46 of the lock lever 22, and pushes down the lock lever 22. Therefore, the locking claw 44 of the lock lever 22 is a magazine
It is removed from the recess 14b of 14 and unlocked.

Along with this unlocking operation, the magazine ejection lever
The action of the spring 36 causes the 18 to follow the curved shape of the locking claw portion 44 and gradually retract toward the discharge position. There, the half-missing gear 52 of the rotating cam gear 20 turns into the rack 32.
The lever 18 for ejecting the magazine is ejected together with the magazine 14 by the rotation of the half chipped gear 52 of the cam gear 20. Then, the magazine 14 can be taken out, and the cam gear 20 is stopped at the position shown in FIG. 2 in accordance with the signal from the sensor provided at the discharge position.

[Effect of device]

As described above, the magazine lock mechanism of the autochanger according to the present invention is pivotably provided so that it can be engaged with the magazine through the opening provided in any one of the wall surfaces of the autochanger into which the magazine is inserted. Lock lever, a spring for urging the lock lever in a direction to engage with the magazine, a lock release cam having an arcuate cam surface engageable with the lock lever, and a drive for driving the lock release cam. Means, an opening through which the lock lever is inserted at a locked position of the magazine, and a rack are provided, and a magazine discharge lever reciprocally movable between the lock lever and the magazine is provided. A gear that engages with a provided rack and drives the magazine ejection lever is provided on the same shaft as the unlock cam. Since a configuration, the number of components is reduced, and it is possible to simplify the structure of the components each other.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, FIG. 2 is a view similar to FIG. 1 showing a magazine ejection lever in an insertion position, and FIG. 3 is a plan view of a lock lever. Is a sectional view of the lock lever, FIG. 5 is an exploded view of the cam gear, FIG. 6 is a side view of the cam gear, FIG. 7 is a bottom view of the magazine, and FIG.
FIG. 9 is a perspective view showing an example of an autochanger body, and FIG. 9 is a view showing a conventional technique. 12 …… bottom wall, 14 …… magazine, 18 …… magazine ejection lever, 20 …… cam gear, 22 …… lock lever, 32 …… rack, 34 …… oblong hole, 38 …… bottom wall opening, 42 …… Support shaft, 44 …… Lock claw, 46 …… Control shaft, 48 …… Spring,
52 …… Semi-chipped gear, 54 …… Driven gear, 56 …… Unlocking cam.

Claims (1)

[Scope of utility model registration request] 1. A magazine lock mechanism for an autochanger, which locks a magazine inserted in the autochanger at a predetermined position, through an opening provided on any wall surface of the autochanger into which the magazine is inserted. A lock lever pivotally provided so as to engage with the magazine, a spring biasing the lock lever in a direction to engage with the magazine, and an arcuate cam surface engageable with the lock lever. A lock release cam, a drive means for driving the lock release cam, an opening through which the lock lever is inserted at a lock position of the magazine, and a rack are provided, and the magazine is reciprocally movable between the lock lever and the magazine. A lever for ejecting the magazine and engaging the rack provided on the lever for ejecting the magazine to drive the lever for ejecting the magazine. Gear, the autochanger of the magazine locking mechanism, characterized in that are provided on a common axis with said lock release cam.