JP2904693B2 - Sidebar lock device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sidebar lock device, and more particularly, to an internal mechanism thereof.

[0002]

2. Description of the Related Art Conventionally, as a sidebar lock device,
For example, there is one described in JP-A-1-299968. That is, when the key is inserted into the key groove of the key cylinder, the tumbler is pulled into the slot of the key cylinder, the side bar is engaged with the contact portion of each tumbler arranged in a line, and the side bar is When the key is turned, the key cylinder rotates. On the other hand, when the key is not inserted into the key cylinder, the tumbler and the side bar protruding from the key cylinder engage with the engagement groove of the case, thereby preventing the rotation of the key cylinder.

[0003]

However, in the sidebar lock device having the above-described structure, the two side springs are directly pressed against the both side edges of the sidebar and urged, so that the sidebar lock device is in the same space. The sidebar and spring must be housed. For this reason, a large storage space is required, and it is not easy to store the key cylinder in a small volume key cylinder. Further, since a separate support member is required to support the side spring, there is a problem that the number of parts is increased and the number of assembly steps is increased.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a sidebar lock device that can be downsized and has a small number of parts and a small number of assembly steps.

[0005]

In order to achieve the above object, a side bar lock device according to the present invention includes a plurality of radially provided slit holes which communicate with a key hole formed in an axial direction. A main rotor having a recess communicating with the slit hole and the key hole, a positioning notch at an upper end edge, and a front substantially rotatable slidably housed in the slit hole of the main rotor. A tumbler having a V-shape, a lower surface that can be fitted into the notch for positioning of the tumbler, a side bar that fits into the recess of the main rotor, and a tongue that contacts the upper surface of the side bar. A lever rotatably mounted on the main rotor, a spring supported by the lever and biasing the side bar toward the tumbler via a tongue portion; And a rear rotor engaged with the main rotor via a locking claw of the lever that rotates in conjunction with the main rotor. When a proper key is not inserted into a key hole of the main rotor, the main rotor When the key rotates, the rear rotor does not rotate, and when the appropriate key is inserted into the key hole of the main rotor, the side bar fits into the positioning notch of the aligned tumbler, The locking claw portion of the lever that rotates by being engaged with the rear rotor, and the rear rotor rotates in conjunction with the rotation of the main rotor.

[0006]

Therefore, according to the present invention, the tongue of the lever urges the side bar toward the tumbler and the locking projection of the lever is locked to the rear rotor based on the spring force of the spring supported by the lever. Will do.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will now be described with reference to FIGS. The sidebar lock device according to the present embodiment generally includes a cylindrical holder 10, a main rotor 20 rotatably housed in the cylindrical holder 10, and a rear end portion of the main rotor 20. Rear rotor 70 to be assembled, and rear rotor 70
And a cap 90 which prevents the holder 10 from coming off through the coil spring 80.

The holder 10 has a cylindrical shape capable of accommodating a main rotor 20, which will be described later. A flange 12 having a key insertion hole 11 is provided in a front opening, and a pair of positioning members are provided from both side edges of the rear opening. The arms 13 and 14 extend along the axis. Further, the holder 10 is provided with a pair of click grooves 15 and 15 on upper and lower inner peripheral surfaces thereof. Reference numeral 16 denotes a locking claw.

The main rotor 20 has a substantially cylindrical outer shape, and a key hole 21 through which a key 100 described later can be inserted is provided along the axis from the front end face thereof. Further, locking projections 22a and 22b for engaging a rotor cover 30 described later are provided.

The main rotor 20 is provided with slit holes 23a to 23h penetrating radially in opposite sides of the main rotor 20 and communicating with the key holes 21 at a predetermined pitch.

The main rotor 20 has a key hole 21 and slit holes 23a to 23
h, and a recess 24 is provided in which a side bar 50 described later can be fitted. On both sides of the recess 24, long grooves 25a, 25b for rotatably housing left and right levers 61, 62, which will be described later, are provided in parallel.

The main rotor 20 has a pair of locking projections 26a and 26b on both side edges of its rear end face, and has a cutout groove 27 below it. The main rotor 20 is provided on its lower surface with a fitting hole 28 into which a click ball 65 can be fitted via a spring 64 (FIG. 2).

The rotor cover 30 has a central hole 31 at the center thereof through which the key 100 can be inserted, and cutouts at its upper and lower edges to engage with the locking projections 22a and 22b of the main rotor 20, respectively. 32 and 33 are provided. Although not specifically shown, the main rotor 20 is provided with a shutter which is biased by a spring in a direction to close the center hole 31 of the rotor cover 30 so as to block rainwater and dust.

The slit hole 23a of the main rotor 20
At 23h to 23h, tumblers 41 to 48 each having a substantially rectangular front shape are inserted. The tumblers 41 to 48 have locking projections 41a to 48a (rear side not shown) on the outer lower edge thereof, and positioning projections 41b to 4 on the inner peripheral edge thereof.
8b (the back side is not shown), and positioning notches 41c-48 are provided at the upper edge thereof.
c is provided. Further, both end surfaces of the tumblers 41 to 48 have the same curvature as the outer peripheral surface of the main rotor 20. Note that the positioning notches 41c to 48c of the tumblers 41 to 48 are formed so as to be aligned on the same straight line when the positioning projections 41b to 48b are fitted into the key grooves of a predetermined key.

The side bar 50 has a flat shape that can be fitted into the recess 24, and the pressing projection 5
1, 52 extend laterally, and projecting ridges 53 having a substantially triangular cross section are provided on the lower surface thereof (FIG. 3).

The left and right levers 61 and 62 have a pair of tongues 61a and 61b and 62a and 62b, respectively, projecting inward.
And 62c, and extending portions 61d and 62d for holding the lever spring 63, respectively. The distance from the rotation axis of the left and right levers 61, 62 to the point of action of the locking claw portions 61c, 62c for locking to the rear rotor 70 described later is the rotation axis of the left and right levers 61, 62. It is longer than the distance from the center to the point of action of the tongues 61a, 61b and 62a, 62b for urging the side bar 50.

The rear rotor 70 is connected to the main rotor 20.
3, a pair of locking projections 71 and 72 project from the front inner peripheral surface as shown in FIG. 3, and a connecting shaft portion is provided at the center of the rear end surface. An annular projection 74 is provided so as to surround the outer peripheral surface thereof, and an annular groove 75 that can accommodate the coil spring 80 is formed.

Next, an assembling method of the present embodiment comprising the above-described components will be described. First, the main rotor 2
The notches 32, 33 of the rotor cover 30 are engaged with the 0 locking projections 22a, 22b to cover the front opening of the key hole 21.

The tumbler 4 is inserted into the slit holes 23a to 23h of the main rotor 20 through a spring 40.
1 to 48 are slidably inserted alternately from both sides.

Next, the recess 24 of the main rotor 20 is formed.
The left and right levers 61 and 62 are rotatably housed in the long grooves 25a and 25b, respectively, and the springs 63 are arranged in the cutout grooves 27 of the main rotor 20 so that the left and right levers 61 and 62 are provided. Extension part 61 of levers 61 and 62
Push d and 62d outward. Thereby, the tongue 61
a, 61b and 62a, 62b
The zero protrusions 51 and 52 are pressed from above, respectively, to urge the side bar 50 downward.

Further, the fitting hole 2 of the main rotor 20
After assembling the click ball 65 to the holder 8 via the spring 64, the main rotor 20 is stored in the holder 10. Thereby, the outer end surfaces of the tumblers 41 to 48 slidably inserted into the slit holes 23 a to 23 h and urged outward by the spring force of the spring 40 are pressed against the inner peripheral surface of the holder 10.

On the other hand, the coil cap 80 is fitted into the annular groove 75 of the rear rotor 70, and the annular cap 90 is fitted. Then, the rear rotor 70 is fitted to the rear end of the main rotor 20 housed in the holder 10, and
The assembling work is completed by engaging the engaging hole 92 of the retaining portion 91 extending from the annular cap 90 with the engaging claw 16 of the holder 10 to prevent the retaining hole.

When the assembling operation is completed, both ends 81 and 82 of the coil spring 80 are engaged with the notched edges 93 and 94 of the annular cap 90 to prevent the rear rotor 70 from rattling.

As shown in FIG. 1, the key 100 used in this embodiment has a meandering key groove 102 on the front and back surfaces of the key body 101 (the key groove 102 on the back side is not shown). The tip of the tumbler 41
In order to facilitate engagement with the positioning projections 41b to 48b, a substantially triangular guide groove 103 is formed.

Next, the operation of the sidebar lock device according to this embodiment will be described. First, the appropriate key 100
From the central hole 31 of the rotor cover 30 to the main rotor 20.
, The protrusion 48 b (not shown) of the tumbler 48 slides into the key groove 102 via the guide groove 103, and the tumbler 48 slides inward against the spring force of the spring 40.

Further, when the key 100 is depressed, the positioning projections 47b-47 of the tumblers 47-41 are pressed as described above.
41b slides into the key groove 102, whereby the tumblers 47 to 41 sequentially move inward. And key 10
When the insertion of the tumbler 41 is completed, the positioning projections 48b to 41b of the tumblers 48 to 41 are positioned at predetermined positions of the meandering key groove 102, and the position restricting notches 41c to 48c of the tumblers 41 to 48 are in the same position. Align on a straight line. For this reason, the protrusion 53 of the side bar 50 urged downward by the left and right levers 61 and 62 falls into the notches 41 c to 48 c of the tumblers 41 to 48. As a result, as shown in FIG. 3, the left and right levers 61, 62 rotate outward, and the locking claws 61c, 62c lock on the projections 71, 72 of the rear rotor 70, respectively.

When the key 100 is turned against the spring force of the coil spring 80, the rear rotor 70 is rotated via the locking claws 61c and 62c of the left and right levers 61 and 62,
The other components (not shown) connected to the shaft portion 73 are driven to release the lock, and when a predetermined position is reached, the click ball 65 engages with the click grooves 15, 15 to provide a desired click feeling. Is obtained.

According to this embodiment, the left and right levers 6
The distance from the rotation axis of the left and right levers 61 and 62 to the action point of the locking claw portions 61c and 62c that lock the rear rotor 70 biases the side bar 50 from the rotation axis of the left and right levers 61 and 62. It is longer than the distance to the action points of the tongues 61a, 61b and 62a, 62b. Therefore, even if the amount of movement of the tongue portions 61a, 61b and 62a, 62b at the action point is small, the locking claw portions 61c, 62c of the left and right levers 61, 62 with respect to the projections 71, 72 of the rear rotor 70 are locked. Since the amount is large and can be securely disengaged, there is an effect that malfunction can be prevented.

Next, when an incorrect key is inserted, the positioning projections 48b to 41b of the tumblers 48 to 41 slide sequentially into the key groove of the incorrect key as described above, and the tumblers 48 to 41 are moved inward. Slide sequentially. However, in this case, since the notches 41c to 48c are not aligned on the same straight line, the ridge 53 of the side bar 50 does not fall into the notches 41c to 48c. For this reason, the left and right levers 61 and 62 cannot rotate, and the locking claws 61c and 62 do not rotate.
Since c does not open outward, the locking claws 61c, 62c cannot be locked to the projections 71, 72 of the rear rotor 70. As a result, even if the key 100 is turned, only the main rotor 20 turns, and the rear rotor 70 whose position is regulated by the coil spring 80 does not turn.

Further, even if the tip of the driver is inserted into the key hole 21 of the main rotor 20 and forcedly turned, the outer end surfaces of the tumblers 41 to 48 are merely pressed against the inner peripheral surface of the holder 10. , As described above, the main rotor 2
Since 0 only spins idle, theft due to forced rotation can be prevented. Further, according to the present embodiment, since a high load caused by forcibly rotating the main rotor is not applied to the main rotor, the main rotor and the like can be formed of a resin material, and there is an advantage that production cost can be reduced.

In the above embodiment, the tumblers 41 to 41 are used.
Although the case where the 48 positioning notches 41c to 48c are aligned on the same straight line has been described, the present invention is not limited to this, and they may meander. However, in this case, it is needless to say that the protrusion 53 of the side bar 50 also needs to meander.

[0032]

As is apparent from the above description, according to the sidebar lock device of the present invention, unlike the conventional example, the spring force of the spring is applied to the sidebar via the lever. For this reason, there is no need to store the sidebar and the spring in the same space, and the dead space of the main rotor can be effectively used, so that the device can be downsized. Further, since the spring is supported by the lever, there is no need to separately provide a support member, and the number of parts and the number of assembly steps are reduced. In particular, there is an effect that assembling errors are reduced due to a decrease in the number of parts, and operating characteristics are improved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a sidebar lock device according to the present invention.

FIG. 2 is an exploded sectional view of a main part of the embodiment.

FIG. 3 is a sectional view of a main part of the embodiment.

[Explanation of symbols]

10 ... holder, 20 ... main rotor, 21 ... key hole,
23a to 23h: slit holes, 24: recesses, 41 to 48
... Tumbler, 41b-48b ... Positioning projection, 41c
~ 48c: Notch for positioning, 50: Sidebar, 5
3. Projection, 61, 62 Left, right lever, 61a, 61
b, 62a, 62b: tongue, 61c, 62c: locking claw, 63: spring, 70: rear rotor, 71, 72
... projections, 100 ... keys, 102 ... key grooves.

Claims (1)

(57) [Claims] 1. A main rotor communicating with a key hole formed in an axial direction and having a plurality of slit holes provided in a radial direction and having a recess communicating with the slit hole and the key hole. It has a positioning notch at the upper edge, and has a substantially rectangular front tumbler that is slidably received in a slit hole of the main rotor, and a lower surface that can be fitted into the positioning notch of the tumbler. A side bar fitted into the recess of the main rotor; a tongue contacting the upper surface of the side bar; a lever rotatably mounted on the main rotor; and a lever supported by the lever. A spring that urges the side bar to the tumbler side through the tongue portion; and a spring that engages with the main rotor through a locking claw portion of the lever that rotates in conjunction with the operation of the side bar. When a proper key is not inserted into the key hole of the main rotor, even if the main rotor rotates, the rear rotor does not rotate, and a proper key is inserted into the key hole of the main rotor. When the tumbler is inserted, the side bar is fitted into the positioning notch of the tumbler, and the locking claw of the lever, which rotates in conjunction with the side bar, engages with the rear rotor to rotate the main rotor. A rear rotor that rotates in conjunction with the sidebar lock device.