JPH01292656A - Releasing mechanism in anchoring device - Google Patents

Abstract

PURPOSE:To reduce the capacity of an electromagnetically operating body by attracting a releasing member against a comparatively weak return spring at the beginning of switch-on to carry a current to the electromagnetically operating body, and making the releasing member abut against an anchoring member, and releasing an anchored state by the rotating action of the anchoring member. CONSTITUTION:When the current is carried to an electromagnet 15 in order to release the anchored state between the anchoring projecting piece 5 of an operating member 1 and the anchoring hole 10 of the anchoring member 6, the free end part 11' of the releasing member 11 is attracted, and the releasing member 11 rotates against the comparatively weak return spring 13, and abuts against the projecting part 8 of the anchoring member 6. In this abutting operation, since the rotation of the releasing member 11 is performed instantaneously by an attracting action, a hammering phenomenon is caused within the range of an interval S, and the anchoring member 6 rotates vigorously by this phenomenon, and engagement between the anchoring hole 10 and the anchoring projecting piece 5 is released in a state that the anchoring member 6 rotates sufficiently together with the releasing member 11, and the operating member 1 is returned automatically by a return spring 4.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present application relates to a release mechanism for a locking device that locks an operating member such as an operating lever in a cassette tape player, for example.

Conventional technology: Fast forward lever 1 in a cassette tape player
A locking device for locking an operating member such as a rewind lever or an eject lever is provided on the operating member (30) when the operating member (30) is pressed against its restoring spring (31), as shown in FIG. A locking protrusion (32) is provided in a locking hole provided in one piece (34)a of a rotatable locking member (34) which is always elastically biased in one direction by a restoring spring (33). (35), and its release mechanism is such that a rotatable release member (36) is connected to one piece (34) of the locking member (34) by a spring (37). Protrusion (34) b provided on the edge perpendicular to a
The release member (36) is attracted by the excitation of the electromagnet (38), and the locking member (34) is rotated against its restoring spring (33). , the locking protrusion (32) and the locking hole (35) are disengaged.

Problems to be Solved by the Invention By the way, in the above configuration, when the locking protrusion (32) is locked in the locking hole (35), the locking member (
34) is to be rotated against its restoring spring (33), the combined elasticity of the restoring springs (31) and (33) acts as a rotational load.

In order to release the locked state between the locking hole (35) and the locking protrusion (32), the locking member (
34), the required rotational force is applied to the locking member (34) when the release member (36) is furthest away from the electromagnetic force (38).

Therefore, from this farthest state, the release member (36) is attracted and the locking member (34) is rotated against the combined elasticity of the restoring springs (31) and (33). However, the electromagnet (38) required a large capacity electromagnet (38), and the structure was also large.

Means for Solving the Problems Therefore, in the present application, in order to reduce the capacity of the electromagnetic actuating body and downsize it by utilizing a collision effect (hammer effect), the actuating member is moved against the urging force of the electromagnetic actuating body. A first position for locking, a locking member for releasing the locking state of the actuating member in the process of moving from that position to a second position against a restoring spring, and separating from this locking member at a predetermined distance. a release member that abuts the locking member when moved from an inoperative position to an activated position against a restoring spring and moves the locking member to a second position by the abutting action; and a release member that moves the locking member to a second position when energized. In order to further reduce the attraction force of the electromagnet, the restoring spring of the release member is placed at a required distance from the locking member when the release member is in the non-operation position. The release member is stretched between the release member and the locking member so as to separate from each other, and the restoring spring of the release member is omitted, and a magnet is provided that attracts the release member and maintains its inoperative position. It is a thing,
In the above, an electromagnetic plunger may be provided in place of the electromagnet, and a release member may be connected to the rod thereof. a locking member that releases the locking state of the actuating member in the process of moving to the second position against a restoring spring; and a locking member that separates from the locking member at a required interval when moving from an inoperative position to an activated position; a release member that abuts against the locking member and moves the locking member to a second position by the abutting action; an electromagnetic plunger that moves the release member to the operating position by suction of a rod when energized; and a movable electromagnetic plunger. It consists of a magnet that attracts the tip of the rod to hold the release member in the inoperative position, and in this configuration, the polarity of the attracting surface of the magnet is equal to the polarity with which the tip of the rod is excited when the electromagnetic plunger is energized. It is made up of

Function: When the actuating member is operated against the biasing force, the actuating member is locked with the locking member.

Next, in the first position of the locking member in this locked state, when the electromagnet or the electromagnetic plunger is energized in order to release the locked state, in the case of an electromagnet, this directly attracts the release member; At times, movement of the rod causes the release member to move from an inactive position to an activated position against its restoring spring.

At the beginning when the release member moves to the operating position,
Only the release member moves against the restoring spring within the required interval provided between the release member and the locking member, and the movement is instantaneous, so it collides with the locking member with a strong force. do. That is, a hammer phenomenon occurs in the locking member, and the locking member moves vigorously. After the release member collides with the locking member, the locking member moves together with the release member, and in the process of moving the release member to the operating position and the locking member to the second position, the locking member and the locking member move together. The locking state with the member is released, and the actuating member automatically returns to its original position due to its biasing force.

In the above, after the release member collides with the locking member,
The restoring springs of both members act as a suction load on the electromagnet or electromagnetic plunger, but the restoring spring of the releasing member is released so that the releasing member separates from the locking member at the required interval when the releasing member is in the inoperative position. When the member is stretched between the member and the locking member, the elasticity of the release member becomes constant after the release member collides with the locking member, so the attraction load on the electromagnet or electromagnetic plunger is reduced accordingly. The length will be reduced.

In addition, in the above, when the restoring spring of the release member is omitted and a magnet is provided that attracts the release member and holds it in an inoperative position, the electromagnet or electromagnetic plunger is energized, and the release member is activated by the magnet. After the adsorption state is released, the movement of the release member is solely controlled by the attraction force of the electromagnetic actuator, so that a stronger hammer action can be obtained.

Furthermore, a first position in which the actuating member is locked against the biasing force thereof, and a lock in which the actuating member is released from the locked state in the process of moving from that position to a second position against the restoring spring. When the member is moved from an inoperative position where it is separated from the locking member by a required distance to an activated position against the restoring spring, it abuts against the locking member, and due to the abutting action, the locking member is moved into the first position. A release member that moves to the second position, an electromagnetic plunger that moves the release member to the operating position due to attraction of the rod when energized, and a magnet that attracts the tip of the movable rod and holds the release member in the non-operation position. In this case, since the release member is connected to the rod of the electromagnetic plunger, movement of the release member by the electromagnetic plunger is ensured.

Furthermore, in the above, when the polarity of the attracting surface of the magnet is equal to the polarity with which the tip of the rod is excited when the electromagnetic plunger is energized, the attracted surface of the rod should be the same as the attracting surface of the magnet. Due to the excitation, the attracting surfaces of the rods become of the same polarity, and a repulsive force acts between the magnet and the rod, resulting in a stronger hammer action.

Embodiment The embodiment of the present application will be described in detail below based on the drawings (1
) is an operating member such as a fast-forward lever, rewind lever, or eject lever in a cassette tape player, and is slid in the longitudinal direction against, for example, a deck plate by engagement between a long hole (2) and a pin (3). A restoring spring (4) is attached to the operating member (1).
and a chevron-shaped locking protrusion (5) are provided, respectively. (6)
has a piece (7) on one side forming a right angle and a protrusion (7) on the other side.
8), which are rotatably biased in one direction by a restoring spring (9), and this biasing force causes the pieces (7) to have a locking protrusion (5). The piece (7) is in pressure contact with the side edge of the actuating member (1) and has a locking hole (lO) that engages and disengages with the locking protrusion (5). (11) is a protrusion (
8), which is rotatably supported on a shaft (12) on which the locking member (6) is rotatably supported, so as to face the locking member (6) at a required distance S; A restoring spring (13) is attached to hold the release member (11), and a spring sufficient to prevent the release member (11) from swinging due to external vibration or the like is sufficient. (14) is the stopper of the release member (11); (15)
) is an electromagnet that attracts the free end (11)' of the release member (11) when energized, and is separated from the release member (11) by a distance larger than the distance S.

Thus, the piece (7) of the locking member (6)
), when the actuating member (1) is pressed against its restoring spring (4) for fast forwarding, rewinding, or ejecting, After the locking member (6) is temporarily rotated by the locking protrusion (5) against its restoration spring (9), the locking protrusion (5) rotates as shown by the solid line in FIG. and the locking hole (10) are locked, and the pressed state of the actuating member (1) is maintained.

Next, when the electromagnet (15) is energized to release the locked state from the state shown by the solid line in Figure 2, the free end (11)' of the release member (11) is attracted and As shown in , the release member (11) rotates against the restoring spring (13) and abuts against the protrusion (8) of the locking member (6). In this abutting action, since the rotation of the release member (11) is instantaneously performed by the suction action, a hammer phenomenon occurs within the range of the interval S, thereby causing the locking member (6) to rotate vigorously. Then, together with the release member (11), the locking member (6
) is sufficiently rotated, the locking hole (10) and the locking protrusion (5) are unlocked, and the actuating member (1) is automatically returned by its restoring spring (4).

Figure 3 shows an electromagnetic plunger (15) replaced with an electromagnet (15).
16) is used to lock the free end (11)' of the release member (11) to the tip of the movable rod (16)'. According to this configuration, Since the movable rod (16)' is connected to the release member (11), there is less magnetic flux loss and the capacity of the electromagnetic plunger (16) can be reduced compared to the case of an electromagnet (15).

FIG. 4 shows another embodiment in which the present invention is applied to a rotation control means for a notched gear used in a tape running direction switching mechanism, a head plate actuator structure, an eject lever drive mechanism, etc. in a cassette tape player. In this configuration, the locking member (17) is made slidable through engagement between the long hole and the pin, and the locking member (17) is provided with a notched gear (
18), and
A locking piece (20) that controls the rotation of the notched gear (1B), that is, the operating member, and a spring that maintains the locked state between the locking piece (20) and the locking portion (19) of the notched gear (18). (2
1), one end of which is pivoted (22) to be tiltable, and the protrusion (17) provided on the locking member (17) is normally attached.
17) A release member (24) rotated in one direction by a spring (23) so as to be separated from each other at a required distance S, and a free end (24) of this release member (24).
” When energized, the release member (24) is attracted to the protrusion (
17) ', and release the locking piece (20) from the locking part (19) of the notched gear (18) by pushing the locking member (17) against its restoring spring (21). An electromagnet (15) which operates in the direction shown in FIG. In the figure, (25) is a spring that applies an initial rotational force to the notch gear (18) by being in pressure contact with the cam (26) fixed to the rotation center axis of the notch gear (18);
27) indicates a driving gear.

Figure 5 shows that in order to further reduce the capacity of the electromagnetic actuator,
In the configuration shown in FIG. 1, the release member (11) normally locks the restoring spring (13) provided on the release member (II) between the release member (11) and the locking member (6). Separate from the protrusion (8) of the member (6) by the required distance S length,
FIG. 6 shows another embodiment in which the restoring spring (23) provided on the release member (24) is connected to the release member (24) and the locking member (24) in FIG. 17)
Other embodiments are shown in which the structure is suspended between the two.

Furthermore, FIGS. 7 and 8 show a release member (11).

(24) and the protrusion (8) of the locking member (6) and (17)
, (17)" to maintain the required spacing S with the release member (11).

This shows another embodiment corresponding to FIG. 5 and FIG. 6, respectively, in which a magnet (2B) is provided to attract the free end portions (11)' and (24)'' of (24), Also, in FIG. 9, the restoring spring (13) of the release member (11) is omitted from FIG. FIG. 10 shows another embodiment configured as shown in FIG. , release member (24)
The free end (24)' of the magnet (
28) shows another embodiment in which the tip of the movable rod (16)' is attracted.

In the above, when the polarity of the attraction surface of the magnet is made equal to the polarity with which the tip of the rod is excited when the electromagnetic plunger is energized, the attraction surface of the rod (16)' is Due to the excitation of the electromagnetic plunger (16), the attracted surface of the rod (16)' becomes the same polarity, so a repulsive force acts between the magnet (2B) and the tip surface of the rod (16)'. , more powerful hammer action can be obtained.

Note that as the magnet (28) in the above, it is sufficient to prevent the release member (24) from swinging due to external vibrations, etc., and as the electromagnet (15) and the electromagnetic plunger (16), a magnet ( An electromagnet and an electromagnetic plunger having a stronger attraction force than the attraction force of 28) are used.

Effects of the Invention As described above, according to the present application, the locking member and the actuating member are brought into contact with each other by bringing the release member into abutment with the locking member, and by using the abutting force and the rotation of the locking member due to the suction of the release member. In addition to being configured to release the locked state, at the beginning of energizing the electromagnetic actuating body, the releasing member is attracted against a relatively weak restoring spring, and after the releasing member collides with the locking member, The combined elasticity of the restoring springs of both members acts as a rotational load on the release member, but in this state, if the electromagnetic actuator is an electromagnet, the release member is close to it and a strong attractive force is acting on it. Since the movable rod of the electromagnetic plunger is in a state of acceleration, the capacity of the electromagnetic actuator is smaller than in the conventional configuration, which requires a large attraction force from the beginning of energizing the electromagnetic force. It is effective for downsizing, and the restoring spring of the release member can be reduced.
When the release member is stretched between the release member and the locking member so as to be separated from the locking member at a required interval in the inoperative position, after the release member collides with the locking member, Since the elasticity of the restoring spring remains constant regardless of the movement of the release member, the suction load on the electromagnetic actuator can be reduced, and the restoring spring of the release member can be omitted, and the release member can be attracted and the restoring spring can be fixed. When a magnet is provided to hold the operating position, after the release member is separated from the magnet due to the attraction of the electromagnetic actuator, the movement of the release member is solely controlled by the attraction of the electromagnetic actuator, and the locking member is moved. In the process of moving from the first position where a large abutting force is obtained and further locks the actuating member against the urging force, and from that position to the second position against the restoring spring, the actuating member a locking member that releases the locking state of the locking member; and when the locking member is moved from an inoperative position where it is separated from the locking member at a required interval to an activated position, the locking member abuts against the locking member, and due to the abutting action, the locking member a release member that moves the release member to a second position, an electromagnetic plunger that moves the release member to the operating position by attraction of the rod when energized, and a magnet that attracts the tip of the movable rod to hold the release member in the inoperative position. In this case, since the release member is connected to the rod of the electromagnetic plunger, movement of the release member by the electromagnetic plunger is ensured. Furthermore, in the above, when the attracting surface of the mouth and the rod becomes the same polarity with respect to the attracting surface of the magnet, the repulsive force is created between the magnet and the mouth and the bar. This has the advantage that a larger collision force can be obtained, and therefore a smaller electromagnetic actuator can be used.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and FIG. 1 is a partially cutaway overall plan view, FIG. 2 is a plan view showing its operating state, and FIGS. 3, 5, 7, and 9. 1 is a plan view showing another embodiment corresponding to FIG. 1, FIG.
FIG. 0 is another embodiment diagram corresponding to FIG. 4, and FIG. 11 is a plan view of the conventional configuration. In the figure, (1) is the actuating member, (4), (9), (
13), (21), (23) are restoration springs, (
5) is a locking protrusion, (6) and (17) are locking members, (
8), (17)' are protrusions, (10) are engagement holes, (
11), (24) are release members, (15) are electromagnets, (
16) is an electromagnetic plunger, (16)' is a movable rod, and (28) is a magnet.

Claims (6)

[Claims] (1) A first position where the actuating member is locked against the biasing force thereof, and a lock where the actuating member is released from the locked state in the process of moving from that position to the second position against the restoring spring. When the member is moved from an inoperative position where it is separated from the locking member by a required distance to an activated position against the restoring spring, it abuts against the locking member, and due to the abutting action, the locking member is moved into the first position. A release mechanism in a locking device comprising a release member that moves to the second position and an electromagnet that attracts the release member to the operating position when energized. (2) The lock according to claim 1, wherein the restoring spring of the release member is stretched between the release member and the locking member such that the release member is separated from the locking member at a required interval in the inoperative position. A release mechanism in a locking device. (3) A release mechanism in a locking device according to claim 1, wherein a restoring spring for the release member is omitted and a magnet is provided which attracts the release member and holds it in an inoperative position. (4) Claim 1, 2 or 3, comprising an electromagnetic plunger instead of the electromagnet, and a release member connected to the rod.
A release mechanism in the described locking device. (5) A first position where the actuating member is locked against the urging force thereof, and a lock where the actuating member is released from the locked state in the process of moving from that position to the second position against the restoring spring. When the member is moved from an inoperative position where the member is separated from the locking member at a predetermined distance to an activated position, the locking member is brought into contact with the locking member, and the locking member is moved to the second position by the abutting action. A release mechanism in a locking device comprising a member, an electromagnetic plunger that moves the release member to an operating position by attraction of a rod when energized, and a magnet that attracts the tip of the movable rod to hold the release member in an inoperative position. (6) The release mechanism in the locking device according to claim 4, wherein the polarity of the attracting surface of the magnet is equal to the polarity with which the tip of the rod is excited when the electromagnetic plunger is energized.