JP2019120061A - Cylinder lock - Google Patents

Abstract

To provide a cylinder lock that enables movement of a lever in the direction of the length of a plug rotation axis.SOLUTION: A cylinder lock has a rod-shaped lever 3 connected to the rear end of a plug 2 so as to be translationally movable by a predetermined length in the longitudinal direction of the rotational axis of the plug 2, the plug being rotatably inserted into a cylinder case 1. The lever 3 is provided with a support block 6 which is movable in the longitudinal direction of the plug 2 and has a plug receiving surface 4 being contact with a block receiving surface 5 formed on the plug 2, and a compression spring 7 which restricts a backward movement of the support block 6. The lever 3 is configured such that an angle with respect to the rotation center of the plug 2 is maintained by restricting the relative movement of the plug receiving surface 4 relative to the block receiving surface 5.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cylinder lock.

  As a cylinder lock provided with a rod-like lever protruding from the rear end of the plug, one described in Patent Document 1 is known.

  In this conventional example, a connecting hole is formed at the rear end of the plug, and the plug and the lever are connected by inserting a pin fixed to the front end of the lever.

  The lever is held by a resiliently deformable neutral rubber, and the neutral rubber is held in pressure contact with a flat surface formed by the end of the plug and the lever so that the lever matches the rotational axis length of the plug The lever can be inclined relative to the rotational axis length of the plug within the elastically deformable range of the neutral rubber.

JP, 2009-270347, A

  However, in the above-described conventional example, the lever is allowed to move in the direction of inclination with respect to the rotational axis length of the plug, but movement in the direction of the rotational axis length is substantially impossible because the deformability of the neutral rubber is limited. There is a problem that the connection with the connection object becomes impossible when the connection object of the lever is shifted in the direction of the rotation axis of the plug.

  The present invention has been made to solve the above-mentioned drawbacks, and it is an object of the present invention to provide a cylinder lock capable of moving the lever in the plug axial direction.

According to the invention said object is
The rear end of the plug 2 rotatably inserted into the cylinder case 1 has a variable angle with respect to the rotational center of the plug 2 and is rod-like connected so as to be able to translate for a predetermined length in the rotational axis length direction of the plug 2 With lever 3
In the lever 3, the bearing block 6 is movable in the longitudinal direction of the plug 2 and the plug bearing surface 4 abuts on the block bearing surface 5 formed on the plug 2, and the rearward movement of the bearing block 6 A compression spring 7 is mounted to
The lever 3 is achieved by providing a cylinder lock in which the relative movement of the plug receiving surface 4 with respect to the block receiving surface 5 is restricted and the angle to the center of rotation of the plug 2 is maintained.

  In the present invention, the lever 3 is formed in a rod shape elongated in the rotational axis direction of the plug 2 and the rear end portion of the plug 2 (herein, the insertion end side of the unlocking key The insertion direction is "backward". A bearing block 6 is mounted on the lever 3 whose rearward movement is restricted by a compression spring 7, and a plug receiving surface 4 formed at its front end abuts on the block receiving surface 5 of the plug 2.

  The lever 3 formed in a rod shape and projecting from the rear end of the plug 2 generates a rotational moment in which the rear end hangs down by its own weight centering on the connecting portion with the plug 2 by its own weight.

  In the present invention in which the block receiving surface 5 of the plug 2 is brought into contact with the plug receiving surface 4 of the bearing block 6 mounted on the lever 3 and the rearward movement of the bearing block 6 is restricted by the compression spring 7. The lever 3 does not rotate because the rotation path of the plug bearing surface 4 of the bearing block 6 during rotation is blocked by the block bearing surface 5 of the plug 2, and the angle between the plug 2 and the lever 3 is a set value Will be held by

  In addition, since the rearward movement of the bearing block 6 is restricted by the compression spring 7, when a rotational moment exceeding a predetermined value is applied to the lever 3, the compression spring 7 bends to rotate the bearing block 6. Because the path is open, the variability of the relative angle between the plug 2 and the lever 3 is also maintained.

  By holding the relative angle between the plug 2 and the lever 3 constant, when the cylinder lock is attached, the tip position of the lever 3 with respect to the mounting direction of the cylinder lock is uniquely determined. Since it is not necessary to support and guide the tip of the lever 3 to the connection target, the mounting workability of the cylinder lock is improved.

  Further, since the relative angle between the plug 2 and the lever 3 is variable, the plug 2 is connected to the connection target even if the connection target is displaced with respect to the rotation center of the plug 2, and the plug 2 It becomes possible to transmit the rotational operation force to the connection target.

  Furthermore, since the lever 3 is movable in the direction of the rotational axis of the plug 2, the connection object approaches the cylinder lock side, and when the lever 3 moves forward, the compression spring 7 contracts to move It is possible to follow the change in the plug 2 rotational axis length direction in order to absorb the

Also, as another aspect to achieve the above object,
The bearing block 6 can constitute a cylinder lock made of an elastically deformable material.

  The bearing block 6 regulates the change of the relative position of the plug 2 with the block receiving surface 5 of the plug 2 by the back pressure by the compression spring 7 to regulate the angle of the lever 3 with respect to the plug 2 rotation axis. The material of the bearing block 6 is not limited as long as it can be regulated, but the bearing block 6 is formed of an elastically deformable material to allow the bearing block 6 to move rearward or resist the reaction force of the compression spring 7. It can be configured to allow relative movement of the block receiving surface 5 of the plug 2 by either or both of the elastic deformation of the block 6.

  In this case, in the case where the bearing block 6 and the plug 2 form a cylinder lock in which the connection projection 8 provided in a projecting manner is fitted to the other connection recess 9 and connected, the connection projection 8 is connected to the connection projection 8. The contact portion with the recess 9 can be used as a resistance element when the lever 3 rotates, and furthermore, when the connection protrusion 8 and the connection recess 9 are fitted and connected in a press-fit state, the bearing block 6 is previously made. Since the lever 3 can be connected in a state where it is connected to the plug 2, assembling workability is improved.

Also, as another aspect to achieve the above object,
The bearing block 6 can constitute a cylinder lock movable in the axial direction of the plug 2 by sliding a peripheral wall in a block accommodating recess 10 opened in the lever 3.

  In the present invention in which the bearing block 6 is inserted with the outer peripheral wall in sliding contact with the inner wall surface of the block accommodating recess 10 of the lever 3, the bearing block 6 moves in a direction orthogonal to the rotation center of the plug 2 The contact area between the block receiving surface 5 of the plug 2 and the plug receiving surface 4 of the bearing block 6 is constant because the position of the bearing block 6 during movement and in the initial state before movement is uniquely determined. Be kept

  When the bearing block 6 is formed of an elastic material, the magnitude of the resistance to the rotation of the lever 3 is influenced by the contact area of the plug bearing surface 4 and the block bearing surface 5 and the contact with the plug bearing surface 4 of the bearing block 6 In the present invention, in which the area is kept constant, the angle of the lever 3 with respect to the plug 2 can be reliably maintained at the set value.

Furthermore, as another aspect to achieve the above object,
The lever 3 is connected to the plug 2 by inserting the connecting pin 11 into the connecting hole 12 formed at the end of the plug 2;
The connection hole 12 can be formed long in the rotational axis direction of the plug 2 to constitute a cylinder lock that enables translational movement of the lever 3 by a predetermined length.

  In order to make the lever 3 movable in the direction of the rotational axis of the plug 2, for example, it can be achieved by movably housing the lever 3 in the rotatable cylindrical body of the plug 2. By connecting directly to the plug 2 and forming a movable space at the connection site, the whole structure can be simplified.

It is a sectional view showing the present invention. It is sectional drawing which shows the state which the lever moved to the front. (A) is a figure corresponding to FIG. 1, (b) is a fragmentary sectional view in the 3B direction of (a).

  As shown in FIGS. 1 to 3, the cylinder lock has a lock main body 13 in which the plug 2 is inserted in the cylinder case 1 and a lever 3 connected to the rear end of the plug 2. 2 can be rotated by a genuine unlocking key (not shown) and at a neutral rotational position predetermined by a torsion spring 13a having one end locked to the plug 2 and the other end locked to the cylinder case 1 It is held.

  At the rear end of the plug 2, a cylindrical connecting projection 14 is provided in a protruding manner. The tip of the connection projection 14 is formed with a curved surface 14a formed of a spherical surface, a flat surface having a truncated spherical surface, and a boss projecting from the center of the flat surface, and the flat and the side wall of the boss are A block receiving surface 5 corresponding to the plug receiving surface 4 is configured.

  As shown in FIG. 3, the connection protrusion 14 of the plug 2 has a width (W) that allows a connection pin 11 described later to be movably penetrated, and is long along the central axis of rotation of the plug 2. The connection hole 12 is opened. The longitudinal dimension of the connection hole 12 is set to be the shortest dimension on the rotation center axis of the plug 2 and to gradually become longer as going to the outer peripheral direction, and the longitudinal dimension (L) of the shortest dimension portion is inserted The connecting pin 11 is set to be movable along the longitudinal direction of the plug 2 by a predetermined adjustment dimension (δ) (see FIGS. 1 and 2).

  On the other hand, as shown in FIG. 3, the lever 3 is provided with a fitting portion 3a to the cylinder connecting portion 15 of the door latch device fixed to the door at the rear end and a plug connecting portion 3b at the front end. The plug connecting portion 3b is formed of a plug connecting recess 3c, a block receiving recess 10, and a spring receiving recess 3d which are continuous toward the rear, and is formed in a cylindrical shape whose central axes coincide with each other.

  The plug connection recess 3c can be fitted with the connection projection 14 of the plug 2 and arranged so that the central axis coincides with the rotation center of the plug 2 in the fitted state, and the connection protrusion of the plug 2 is formed at the rear end. The conical surface 3e corresponding to the curvature surface 14a of the portion 14 is formed. Further, a pin fixing hole 3f is opened in the lever 3 at a position passing through the plug connection recess 3c.

  The block accommodation recess 10 is formed as a stepped recess having a larger diameter in the front stage than in the rear stage, and the spring accommodation recess 3 d is formed smaller in diameter than the block accommodation recess 10.

  The bearing block 6 is formed of an elastic material such as rubber. The bearing block 6 includes a large diameter portion 6a having a diameter substantially equal to the diameter of the front portion of the block accommodation recess 10 of the lever 3 described above, and a small diameter portion 6b having a diameter substantially equal to the diameter of the rear portion. The spring receiving recess 6c is formed in the center of the small diameter portion 6b, and the connection recess 9 in which the connection protrusion 8 formed on the plug 2 can be press-fit in the front end face of the large diameter portion 6a. Each is provided.

  When the bearing block 6 is housed in the block housing recess 10, the outer circumference of either the large diameter portion 6 a or the small diameter portion 6 b is in sliding contact with the inner peripheral wall of the block housing recess 10. You can move in the direction.

  The cylinder lock is assembled by inserting the connecting projection 14 of the plug 2 connecting the support block 6 into the plug connecting recess 3d of the lever 3 in which the compression spring 7 is inserted in the spring receiving recess 3d. The connection pin 11 (in this example, a spring pin) is connected to the hole 3f.

  The connecting pin 11 penetrates the connecting hole 12 of the plug 2 as shown in FIG. 1 in a fixed state to the lever 3, and in this state, the lever 3 rotates in a direction about the connecting pin 11 (P in FIG. And rotation in the direction (Y direction in FIG. 1) with the contact portion between the connection pin 11 and the connection hole 12 as the center of oscillation.

  Further, in the state where the connection pin 11 is connected, the bearing block 6 is urged forward by the restoring force of the compression spring 7, and as a result, the plug bearing surface 4 of the bearing block 6 is pressed against the block bearing surface 5 of the plug 2. Even if a moment in the direction in which the rear end of the lever 3 hangs down is generated on the lever 3, the lever 3 can not move backward due to the compression spring 7. It is located approximately.

  Furthermore, the bearing block 6 is restricted in movement direction since the peripheral wall is in sliding contact with the inner peripheral wall surface of the block accommodation recess 10, and the block receiving surface 5 of the plug 2 is formed by a plane orthogonal to the rotation center of the plug 2 And the cross-sectional center of the bearing block 6 coincides with the rotation center of the plug 2 so that the contact area between the plug bearing surface 4 of the bearing block 6 and the block bearing surface 5 of the plug 2 is always constant. .

  As a result, the resistance to elastic deformation of the bearing block 6 at the contact portion of the bearing block 6 with the block receiving surface 5 of the plug 2 is always constant, and the variation in the angle of the lever 3 with the plug 2 is eliminated.

  From the above, as shown in FIG. 1, only by moving the cylinder lock in the rotational axis length direction of the plug 2, the cylinder coupling portion of the door latch device in which the cylinder coupling portion 15 is disposed in the rotational center direction of the plug 2 in the door. The lever 3 can be connected to 15.

  When the cylinder latch 15 of the door latch device is slightly misaligned from the insertion direction of the cylinder lock, the compression spring 7 retracts to retract the support block 6 or the plug receiving surface 4 of the support block 6 is elastic. Due to the deformation and the occurrence of both, the lever 3 can be rotated at an appropriate angle with respect to the rotation center of the plug 2 and can be connected to the cylinder connecting portion 15 of the door latch device.

  As shown in FIG. 1, since the lever 3 is urged rearward by the restoring force of the compression spring 7 in a state of being connected to the cylinder body, the connection pin 11 is located behind the shortest dimension of the connection hole 12 of the plug 2 In this state, a gap (δ) is secured between the connection pin 11 and the front end edge of the shortest dimension of the connection hole 12 in this state.

  Therefore, as shown in FIG. 2, when the cylinder connecting portion 15 of the door latch device is disposed close to the lock main body 13 side, compression is caused by the contact of the tip of the lever 3 with the cylinder connecting portion 15. As the spring 7 compresses, the connection pin 11, ie, the lever 3 is pushed forward, and the distance between the cylinder body and the rear end of the lever 3 is shortened, so that the dimensional change of the cylinder connection portion 15 can be accommodated.

Reference Signs List 1 cylinder case 2 plug 3 lever 4 plug receiving surface 5 block receiving surface 6 bearing block 7 compression spring 8 connecting projection 9 connecting recess 10 block receiving recess 11 connecting pin 12 connecting hole

Claims (5)

The rear end of the plug rotatably inserted in the cylinder case has a rod-like lever whose angle with respect to the rotational center of the plug is variable and whose translational movement in the length direction of the rotational axis of the plug is movably connected ,
The lever is mounted with a bearing block which is movable in the longitudinal direction of the plug and the plug bearing surface abuts on a block bearing surface formed on the plug, and a compression spring which restricts the rearward movement of the bearing block And
The cylinder lock wherein the lever is restricted in relative movement of the plug receiving surface to the block receiving surface and the angle with respect to the rotational center of the plug is maintained.   The cylinder lock according to claim 1, wherein the bearing block is formed of an elastically deformable material.   3. The cylinder lock according to claim 2, wherein the bearing block and the plug are coupled by fitting a coupling projection projecting from one of them into the other coupling recess.   The cylinder lock according to claim 2 or 3, wherein the bearing block is movable in the axial direction of the plug by sliding a peripheral wall in a block receiving recess formed in the lever. The lever is connected to the plug by inserting the connecting pin into the connecting hole formed in the plug end portion, and
The cylinder lock according to any one of claims 1 to 4, wherein the connecting hole is elongated in the rotational axis direction of the plug to allow translational movement of the lever of a predetermined length.

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