WO2017043158A1

WO2017043158A1 - Cylinder lock

Info

Publication number: WO2017043158A1
Application number: PCT/JP2016/069291
Authority: WO
Inventors: 貴士石塚; 佐々木　光生; 宮田　和宏; 山元　崇
Original assignee: 株式会社ホンダロック
Priority date: 2015-09-08
Filing date: 2016-06-29
Publication date: 2017-03-16
Also published as: JP2017053124A; CN108138515B; JP6389157B2; CN108138515A

Abstract

A cylinder lock in which a rotor having a keyhole is pivotably inserted into an outer cylinder and in which a tumbler is retained in the rotor, the tumbler being made of a material with a hardness lower than a mechanical key and allowing switching between a state in which the rotor is engaged with the outer cylinder and a state in which the rotor is disengaged with the outer cylinder in response to the mechanical key being inserted into the keyhole, wherein a cleaning tumbler (43) that is made from a material with a lower hardness than the mechanical key (11) and that has a sliding contact portion (45) able to slidably contact a key ridge (41) of the mechanical key (11) is disposed in a rotor (13) further to the rear in the direction in which the mechanical key (11) is inserted into the keyhole than tumblers so as to make the sliding contact portion (45) slidably contact a key ridge (41) on the mechanical key (11) before the tumblers contact the key ridge when the mechanical key (11) is inserted into the keyhole. Thus, dust is prevented from entering the tumbler side even when dust is adhering to the key ridge, and tumbler wear and malfunction is prevented.

Description

Cylinder lock

According to the present invention, a rotor having a key hole into which a mechanical key can be inserted is rotatably inserted into an outer cylinder, and the rotor engages with the outer cylinder, and the mechanical key is inserted into the key hole according to the state. The present invention relates to a cylinder lock in which a state of releasing engagement with an outer cylinder can be switched and a tumbler made of a material having a hardness lower than that of the mechanical key is held by the rotor.

Such a cylinder lock is already known from Patent Document 1 and the like.

Japanese Unexamined Patent Publication No. 2013-227761

However, in the one disclosed in Patent Document 1, when the mechanical key is inserted into the key hole of the rotor while dust is attached to the key pile, the key pile causes dust to intervene between the tumbler. As a result, the dust functions as an abrasive, and the contact surface of the tumbler with the key pile is scraped off, and the mechanical key and the tumbler may not be aligned. Further, if dust enters into the operation hole provided in the rotor so as to slide and hold the tumbler, there is a possibility that the tumbler malfunctions.

The present invention has been made in view of such circumstances, and can prevent dust from entering the tumbler side even if dust is attached to the key pile, thereby preventing tumbler wear and malfunction. An object of the present invention is to provide such a cylinder lock.

In order to achieve the above object, the present invention provides a state in which a rotor having a key hole into which a mechanical key can be inserted is rotatably inserted into an outer cylinder and engaged with the outer cylinder, as well as the key hole. In a cylinder lock in which a tumbler made of a material having a hardness lower than that of the mechanical key is held by the rotor so that the state of releasing the engagement with the outer cylinder can be switched according to the insertion of the mechanical key, the mechanical key has A cleaning tumbler having a sliding contact portion capable of sliding contact with the key pile and made of a material having a lower hardness than the mechanical key is arranged so that the sliding contact portion comes before the tumbler when the mechanical key is inserted into the key hole. In the direction in which the mechanical key is inserted into the key hole. Characterized in that it is arranged on the rotor at the rear than the tumbler I.

According to the above feature of the present invention, even when dust is attached to the key pile of the mechanical key when the mechanical key is inserted into the key hole of the rotor, the key pile is slid before the contact with the tumbler. Since the key pile dust is removed at the sliding contact portion, dust does not intervene between the key pile and tumbler of the mechanical key, and the tumbler wears and malfunctions. Can be prevented. Moreover, since the cleaning tumbler is made of a material having a hardness lower than that of the mechanical key, wear of the mechanical key due to sliding contact with the cleaning tumbler is suppressed.

FIG. 1 is a side view of a cylinder lock and a mechanical key. (First embodiment) FIG. 2 is an exploded perspective view of the main part of the cylinder lock. (First embodiment) FIG. 3 is a longitudinal sectional view of the main part of the cylinder lock, and is a sectional view taken along line 3-3 in FIG. (First embodiment) 4 is a cross-sectional view taken along line 4-4 of FIG. (First embodiment) 5 is a cross-sectional view taken along line 5-5 of FIG. (First embodiment) 6 is a cross-sectional view taken along line 6-6 of FIG. (First embodiment)

DESCRIPTION OF SYMBOLS 11 ... Mechanical key 12 ... Key hole 13 ... Rotor 14 ...

Outer cylinder

15, 16, 17, 18, 19, 20 ... Half tumbler 21 ... Full tumbler 34 ...

Insertion direction

41, 42 ...

Key piles

45, 46 ... Sliding

contact parts

43, 44 ... Cleaning tumbler

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 6.

First embodiment

1 to 3, this cylinder lock is used, for example, for switching between a locked state and an unlocked state of a door lock mechanism provided in a vehicle door. A rotor 13 of this cylinder lock is a mechanical key. 11 has a key hole 12 into which 11 can be inserted, and is rotatably inserted and held in a fixed outer cylinder 14.

The rotor 13 can be switched between a state in which the rotor 13 is engaged with the outer cylinder 14 and a state in which the engagement with the outer cylinder 14 is released in accordance with the insertion of the mechanical key 11 into the key hole 12. A plurality of pairs, for example, three sets of

half tumblers

15, 16; 17, 18; 19, 20 are held at intervals along the insertion direction 34 of the mechanical key 11 into the key hole 12. Further, the rotor 13 is engaged with the outer cylinder 14 in front of the

front half tumblers

19 and 20 along the insertion direction 34 in the half tumblers 15 to 20, and the mechanical connection to the key hole 12 is performed. The full tumbler 21 that can switch the state of disengaging the outer cylinder 14 in accordance with the insertion of the key 11 is held.

4 and 5 together, the outer cylinder 14 has a holding hole 22 through which the rotor 13 is pivotably inserted and held, and the inner periphery of the holding hole 22 includes Two pairs of engaging grooves 23 are provided so as to extend in the axial direction. The half tumblers 15 to 20 are provided with a pair of

operating holes

24, 25; 26, 27 provided at three positions spaced apart in the axial direction of the rotor 13 along a plane orthogonal to the axis of the key hole 12. The coiled springs 31 that are slidably inserted in the respective 28 and 29 and are interposed between the half tumblers 15 to 20 and the rotor 13, respectively, in a direction to engage with one of the engaging grooves 23; 15 to 20 are accommodated in the operation holes 24 to 29 so as to urge them. The full tumbler 21 is slidably inserted into an operating hole 30 provided in the rotor 13 along a plane orthogonal to the axis of the key hole 12 and is coiled between the full tumbler 21 and the rotor 13. A spring 32 is accommodated in the operating hole 30.

A shutter plate 35 capable of closing the key hole 12 is rotatably supported via a support pin 36 at a rear end portion along the insertion direction 34 of the rotor 13. A spring member 37 that biases 35 in the closing direction is provided between the shutter plate 35 and the rotor 13. In addition, a protector 38 is provided in the rotor 13 in front of the shutter plate 35 along the insertion direction 34 so as to prevent a driver other than the mechanical key 11 from entering the key hole 12 as much as possible. Further, a cap 40 having a rectangular opening 39 that allows the mechanical key 11 to be inserted is provided at the rear end of the rotor 13 along the insertion direction 34 so that the shutter plate 35 faces the opening 39. Mounted in such a way.

In FIG. 6, the mechanical key 11 is a reversible key having

key ridges

41 and 42 on both sides in the width direction of the mechanical key 11, and is formed of, for example, white. On the other hand, the half tumblers 15 to 20 and the full tumbler 21 are made of a material having a hardness lower than that of the mechanical key 11, such as brass.

According to the present invention, the

cleaning tumblers

43 and 44 slidably contactable with the

key ridges

41 and 42 of the mechanical key 11 are provided by the half tumblers 15 to 20 when the mechanical key 11 is inserted into the key hole 12. First, it is disposed on the rotor 13 so as to be in sliding contact with the

key ridges

41, 42 of the mechanical key 11. In this embodiment, the first and

second cleaning tumblers

43, 44 are The rotor 13 is disposed behind the half tumblers 15 to 20 along the insertion direction 34.

The first and

second cleaning tumblers

43 and 44 are made of a material having a hardness lower than that of the mechanical key 11, and are made of, for example, brass which is the same material as the half tumblers 15 to 20 and the full tumbler 21. The mechanical key 11 can be inserted into the shape. As shown in FIG. 4, the first cleaning tumbler 43 is formed with a sliding contact portion 45 capable of sliding contact with the key ridge 41 of the mechanical key 11. Further, the second cleaning tumbler 44 is arranged behind the first cleaning tumbler 43 along the insertion direction 34. As shown in FIG. A slidable contact portion 46 that can slidably contact the key ridge 42 of the mechanical key 11 is formed.

The first and

second cleaning tumblers

43 and 44 are slidably accommodated in the

accommodating holes

49 and 50 provided in the rotor 13 along a plane orthogonal to the axis of the key hole 12. A first cleaning tumbler 43 is provided between the first cleaning tumbler 43 and the rotor 13 and is received in the receiving hole 49. The second cleaning tumbler 44 slides the sliding contact portion 46 on the key pile 42 by a spring 48 that is biased and is provided between the second cleaning tumbler 44 and the rotor 13 and is received in the receiving hole 50. It is spring-biased on the contact side. The first and

second cleaning tumblers

43 and 44 urged by the

springs

47 and 48 are prevented from protruding outward from the rotor 13 by contacting the inner surface of the holding hole 22 in the outer cylinder 14. Is done.

By the way, in order to make the cleaning tumbler slidably contact all the key ridges of the mechanical key, for example, in the case of a so-called single-tooth key having a key ridge only on one side in the width direction like a mechanical key for a house, A cleaning tumbler is required. For example, in the case of a reversible so-called double-toothed key having key ridges on both sides in the width direction as in a normal vehicle mechanical key, two cleaning tumblers are required. In the case of the mechanical key 11 having the

key ridges

41 and 42, four cleaning tumblers are required. However, if the four cleaning tumblers are arranged in the rotor 13 as they are, the mechanical key 11 and the rotor 13 are arranged. Becomes longer in the axial direction, leading to an increase in the size of the cylinder lock. However, when the mechanical key 11 has the

key ridges

41 and 42 on both sides in the width direction as in this embodiment but can be used in a reversible manner, as shown in FIG. 4 and FIG. The width of the mechanical key 11 used for reversible by using the two cleaning

tumblers

43, 44 having the sliding

contact portions

45, 46 that can be individually slidably contacted with the

key ridges

41, 42 on one side in the width direction. It is possible to make sliding contact with the

key ridges

41 and 42 on both sides in the direction alternately, thereby avoiding an increase in the size of the cylinder lock.

Next, the operation of this embodiment will be described. The first and

second cleaning tumblers

43 and 44 having the sliding

contact portions

45 and 46 that can slide on the

key ridges

41 and 42 of the mechanical key 11 are provided in the key holes. While the mechanical key 11 is inserted into the tumbler 12, the sliding

contact portions

45 and 46 are brought into sliding contact with the

key ridges

41 and 42 of the mechanical key 11 before the half tumblers 15 to 20 and the full tumbler 21. 12 is disposed on the rotor 13 behind the half tumblers 15 to 20 and the full tumbler 21 along the insertion direction 34 of the mechanical key 11 into the rotor 12, so that the mechanical key 11 is inserted into the key hole 12 of the rotor 13. Sometimes, even if dust adheres to the

key piles

41 and 42 of the mechanical key 11, the

key piles

41 and 42 Before contact with the tumblers 15 to 20 and the full tumbler 21, the sliding

contact portions

45 and 46 of the first and

second cleaning tumblers

43 and 44 are slidably contacted. 42 is removed, so that no dust is interposed between the

key ridges

41 and 42 of the mechanical key 11 and the half tumblers 15 to 20 and the full tumbler 21, and the half tumblers 15 to 20 and the The wear and malfunction of the full tumbler 21 can be prevented from occurring.

In addition, since the first and

second cleaning tumblers

43 and 44 are made of a material having a hardness lower than that of the mechanical key 11, the wear of the mechanical key 11 due to sliding contact with the first and

second cleaning tumblers

43 and 44 is reduced. It is suppressed.

The embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the gist of the present invention.

Claims

A rotor (13) having a key hole (12) into which a mechanical key (11) can be inserted is rotatably inserted into the outer cylinder (14) and engaged with the outer cylinder (14), as well as the key hole. A tumbler made of a material having a hardness lower than that of the mechanical key (11) so that the state of releasing the engagement with the outer cylinder (14) can be switched in accordance with the insertion of the mechanical key (11) into (12). 15, 16, 17, 18, 19, 20, 21) in the cylinder lock held by the rotor (13), the slidable contact is possible with the key pile (41, 42) of the mechanical key (11). A cleaning tumbler (43, 44) having a portion (45, 46) and made of a material having a hardness lower than that of the mechanical key (11) is provided to the key hole (12). While the calkey (11) is inserted, the sliding contact portions (45, 46) are brought into sliding contact with the key ridges (41, 42) of the mechanical key (11) before the tumblers (15-21). The rotor (13) is arranged behind the tumblers (15 to 21) along the insertion direction (34) of the mechanical key (11) into the key hole (12). Cylinder lock.