JP2012225059A - Lock for bicycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lock for bicycle which enables smooth locking and unlocking after repeated locking and unlocking over a long time by reducing the friction due to the slide between a casing inner peripheral part in a casing and a latch inner peripheral part of a latch.SOLUTION: A lock for bicycle comprises an arcuate casing with openings facing each other, a latch which is arranged to reciprocate freely between the unlocking position and the locking position in the casing, a pressing member which is arranged in the casing and press the latch to the unlocking position, and a protruding member or a protruding part which is protruded in at least one of the casing inner peripheral part in the casing and the latch inner peripheral part of the latch.

Description

  The present invention relates to a lock attached to a locked body such as a bicycle.

  2. Description of the Related Art Conventionally, it has been widely known that an arc-shaped kanuki and a circle lock provided with an urging spring are attached to a locked body such as a bicycle inside an arc-shaped casing.

  For example, Patent Document 1 describes an invention relating to a circle lock type bicycle lock provided with an arc-shaped hook and a restoring spring in an arc-shaped lock case.

  In Patent Document 2, a hollow case that is curved in an arc shape, a cannula that is slidable between a lock position that is housed in the case and bridges both ends of the case, and an unlock position that is housed in the case. And a coil spring that is housed in the case and urges the cannula in the unlocking direction, and the invention relating to the horseshoe lock that makes the wheel non-rotatable by sliding the cannula between the spokes of the wheel is described. ing.

JP 2005-155213 A JP 2010-285827 A

  In the lock of the type shown in Patent Document 1 or Patent Document 2, since the arc-shaped kanuki reciprocates between the unlocking position and the locking position, the inner periphery of the kanuki and the inner periphery of the casing are in sliding contact. Since the sliding contact area is large, there is a problem that resistance due to sliding is large, and the reciprocating motion of kanuki is not smooth.

  In recent years, alloy materials containing zinc, aluminum and the like, which are excellent in workability, are used for casings, and steel materials are used for kanuki. For this reason, the casing has a lower hardness than Kanuki, and when used for a long time, it is scraped by Kanuki by repeating unlocking and locking, and resistance due to friction between the inner circumference of Kanuki and the inner circumference of the casing is reduced. There is a drawback that it is increased and it becomes difficult to unlock or lock.

  Furthermore, in order to prevent the casing from being worn by kanuki, it has been attempted to apply lubricating oil to the sliding contact portion between the inner periphery of the kanuki and the inner periphery of the casing, but the unlocking and locking are repeated. Or by flowing down with time, the lubricating oil gradually decreases and eventually disappears, so that although there is a certain effect, it is still difficult to unlock or lock gradually.

  Therefore, in the present invention, by reducing friction caused by sliding between the casing inner peripheral portion of the casing and the kanuki inner peripheral portion, the unlocking and locking can be smoothly performed even when the unlocking and locking are repeated over a long period of time. An object of the present invention is to provide a bicycle lock that can be used.

  That is, the present invention has an opening facing each other, an arc-shaped casing, a cannula that can be reciprocated between an unlocking position and a locking position in the casing, and a cannula that is disposed in the casing. A bicycle lock comprising: a biasing member that biases to a lock position; and a projecting member or a projecting portion projecting from at least one of a casing inner peripheral portion in the casing or a kanuki inner peripheral portion.

  Further, the projecting projecting member or projecting part may be a member provided on the inner periphery of the casing and having a curved surface.

  And the part which has the curved surface formed in the casing inner peripheral part may be sufficient as the said protruding protrusion member or protrusion part.

  And the part which has the curved surface shape | molded in the inner peripheral part of Kanuki may be sufficient as the said protruding member or protrusion part.

  An opening according to the present invention is opposed, an arc-shaped casing, a cannula that can be reciprocated between an unlocking position and a locking position in the casing, and a cannula that is disposed in the casing and is unlocked. According to the bicycle lock comprising a biasing member that biases to a position, and a projecting member or projecting part that projects from at least one of the casing inner peripheral part of the casing or the cannula inner peripheral part of Even if the kanuki reciprocates between the unlocking position and the locking position, the area where at least one of the casing inner peripheral part or the kanuki inner peripheral part abuts can be reduced, so that the resistance due to sliding contact can be greatly reduced. Even if unlocking and locking are repeated over a long period of time, unlocking and locking can be performed smoothly.

  And if the projecting projecting member or projecting part is provided on the inner peripheral part of the casing and has a curved surface, it is possible to reduce the area in contact with the inner peripheral part of Kanuki, By using a material having the same degree of hardness as Kanuki as the member, wear can be reduced, so that unlocking and locking can be smoothly performed even if the unlocking and locking are repeated over a long period of time.

  If the projecting projecting member or projecting part is a part having a curved surface formed on the inner peripheral part of the casing, the area in contact with the inner peripheral part of the kanuki can be reduced. Even if the unlocking and locking are repeated over a long period, the unlocking and locking can be performed smoothly. Further, it can be manufactured at a lower cost than a separate member by changing the design of the mold of the casing.

  If the projecting projecting member or projecting part is a part having a curved surface formed on the inner periphery of the kanuki, it is possible to reduce the area in contact with the inner periphery of the casing for a long time. Even if the unlocking and locking are repeated over a long period, the unlocking and locking can be performed smoothly.

Rear view of the unlocked state with the back cover of the first embodiment removed The exploded perspective view of the unlocking state seen from the back side of the first embodiment Front view of the unlocked state of the first embodiment Rear view of the unlocked state with the back cover of the second embodiment removed. The exploded perspective view of the unlocking state seen from the back side of the second embodiment Rear view of the unlocked state with the back cover of the third embodiment removed. The exploded perspective view of the unlocking state seen from the back side of the third embodiment Rear view of the unlocked state with the back cover of the fourth embodiment removed. The disassembled perspective view of the unlocked state seen from the back side of the fourth embodiment

  Hereinafter, the embodiment regarding the bicycle lock concerning the present invention is described in detail. The embodiments described below are preferable specific examples for carrying out the present invention, and thus various technical limitations are made. However, the present invention is particularly limited in the following description. Unless otherwise specified, the present invention is not limited to these forms.

Example 1
1 to 3, a rear view, an exploded perspective view, and a front view with the back cover (5) of the first embodiment removed are shown. The first embodiment includes a casing (1) that is a housing of a bicycle lock. , Cannula (2) housed in casing (1), urging member (3) for urging kanuki (2), and projecting member (4 a, 4 b) fitted to casing inner peripheral part (12) ), A back cover (5), a locking piece (6) interlocking with the locking / unlocking mechanism (7), and the like.

  The casing (1) is a lock housing fixed to the bicycle. The opening (11) is located opposite to the casing (1), and a groove that can hold the kanuki (2) and the urging member (3) is formed inside thereof. It is an arcuate member. If the inner wall surface of the groove is the casing inner peripheral surface (12) and the projecting members (4a, 4b) are not attached, the unlocking / locking operation is performed so that the inner peripheral portion (21) is slidable. It becomes. The casing (1) has a locking / unlocking mechanism (7), a locking / unlocking mechanism (7), a hole containing a locking piece (6) interlocking with an urging spring (not shown), and fixed to the bicycle. Since it can be attached and detached with a tool, it has an attachment part on the casing inner peripheral surface (12) side. In addition, as shown in FIG. 3, an arc-shaped hole for allowing the cannula lever (23) to rotate is also provided.

  The kanuki (2) is held in the groove of the casing (1) via the urging member (3) and interlocked with the rotation of the kanuki lever (23) from the unlocked position, ) Protrudes from one opening (11) of the casing (1) while being in sliding contact with the projecting members (4a, 4b), and the spokes on the inner side of the bicycle wheel and other spokes located between the openings (11) Are arc-shaped members that pass through the gaps between the two and facing the opening (11). And since the cannuki notch part (22) latches with the latching piece protrusion part (61), cannuki (2) cannot return to an unlocking position with the restoring force of a biasing member (3), and locks. Fixed in position. In addition, in FIG. 1, although the back view of the unlocked state which removed the back surface cover (5) is shown, the locking position of Kanuki (2) is shown with the dashed-two dotted line.

  Moreover, since the outer periphery of the protruding member (4a, 4b) is installed so that the outer periphery of the protruding member (4a, 4b) protrudes toward the Kanuki (2) side from the surface of the casing inner peripheral portion (12), It does not slidably contact with the casing inner peripheral part (12) but slidably contact with the protruding members (4a, 4b). For this reason, the friction by the sliding contact of the cannula inner peripheral part (21) is reduced, and unlocking or locking can be performed smoothly even after long-term use.

  The urging member (3) has one end fitted into a protrusion provided in a groove of the casing (1) and is fixed, and the other end is locked and fixed to the cannula (2) and is wound in a spiral. Made of spring. The urging member (3) has a restoring force in a direction opposite to the sliding direction as the kanuki (2) slides from the unlocked position to the locked position. For this reason, when the locking piece protrusion (61) interlocked with the locking / unlocking mechanism (7) is released from locking with the kanuki notch (22), the extended biasing member (3) is restored. By force, Kanuki (2) slides from the locked position to the unlocked position. The urging member (3) is not limited to a spring but may be rubber.

  The projecting members (4a, 4b) are columnar members that are fitted into locations where a part of the casing inner periphery (12) is cut away. When the projecting member (4a, 4b) is fitted into a location where a part of the casing inner peripheral part (12) is cut out, the outer peripheral part of the projecting member (4a, 4b) becomes the casing inner peripheral part (12). It arrange | positions so that it may protrude from the surface of Kanuki (2). For this reason, the friction by the sliding contact of the cannula inner peripheral part (21) is reduced, and unlocking or locking can be performed smoothly even after long-term use. Further, the protruding members (4a, 4b) are provided so as to be pivotable with respect to the casing inner peripheral portion (12), but may be fixedly provided. Although two protruding members (4a, 4b) are illustrated in FIGS. 1-2, the number is not limited to this number, and may be one or more than two. .

  Further, the shape of the projecting members (4a, 4b) protrudes further toward the cannula (2) than the surface of the casing inner periphery (12) in order to reduce friction caused by sliding contact of the cannula inner periphery (21). The shape is preferable, and in order to further reduce the friction, it is more preferable to have a curved surface at least at a position where it abuts on the inner periphery (21) of kanuki. The material of the projecting members (4a, 4b) is not particularly limited, but it is more preferable to use the same material as that of the kanuki (2) in order to prevent an increase in friction due to wear.

  The back cover (5) is a member fixed to the casing (1) in order to hold the cannula (2) and the urging member (3) in the casing (1). The boss part (13) provided inside the casing (1) is passed through the boss part mounting hole (51) drilled in the back cover (5), and the boss part (13 is penetrated through the boss part mounting hole (51). ) Using a metal tool or the like, the back cover (5) and the casing (1) can be fixed and cannot be easily removed.

  The locking piece (6) is a substantially flat plate member that interlocks with the pivot of the key (9) inserted into the locking / unlocking mechanism (7). When the locking piece (6) is accommodated in the casing (1), the locking piece (6) has a substantially flat-shaped locking piece protrusion (which can protrude in the groove direction of the casing (1)). 61) is extended. The locking piece protrusion (61) is in contact with an elastic spring (not shown) having a restoring force in the direction of the groove of the casing (1) between the locking piece protrusion (61). Therefore, when the kanuki (2) is in the unlocked position, the locking piece protrusion (61) is in contact with the outer periphery of the kanuki (24), while the kanuki (2) is moved from the unlocked position to the locked position. When sliding, the locking piece projection (61) is locked to the kanuki notch (22) according to the restoring force of an elastic spring (not shown). FIG. 3 shows the unlocked state. Then, when the cannula (2) is in the locking position, when the inserted key (9) is pivoted to the locking / unlocking mechanism (7), the locking piece protrusion (61) causes an elastic spring (not shown) to move. Since the locking with the kanuki notch (22) is released while compressing, the kanuki (2) is pulled back to the unlocked position by the restoring force of the urging member (3).

(Example 2)
4 and 5, there are shown a rear view and an exploded perspective view of the second embodiment with the rear cover (5) removed, and the second embodiment is composed of the same members as in the first embodiment. The main difference from the first embodiment is that a protruding member (4c, 4d) integrally formed with the back cover (5) is provided as a member that comes into contact with the inner periphery (21) of the kanuki. is there.

  The projecting members (4c, 4d) provided on the back cover (5) are fitted into locations where a part of the casing inner peripheral portion (12) is cut out, and the back cover (5) as shown in FIG. To the casing (1) in the direction of the casing (1). Further, the projecting members (4c, 4d) have a curved surface so as to project toward the kanuki (2) side from the surface of the casing inner periphery (12) when combined with the casing (1) as shown in FIG. Is provided. For this reason, the friction by the sliding contact of the cannula inner peripheral part (21) is reduced, and unlocking or locking can be performed smoothly even after long-term use. Further, similarly to the first embodiment, the protruding members (4c, 4d) are not limited to being fixed at two places on the back cover (5) shown in FIG. More than two places may be provided.

  Also, the shape of the projecting members (4c, 4d) is less than the surface of the casing inner peripheral portion (12) in order to reduce the friction caused by the sliding contact of the inner peripheral portion (21) of the cannula as in the first embodiment. A shape projecting toward the kanuki (2) side is preferable, and in order to further reduce the friction, it is more preferable that the surface has a curved surface at least in contact with the kanuki inner peripheral portion (21).

  In addition, the method for locking and unlocking kanuki (2) is the same as in Example 1.

(Example 3)
6 and 7 show a rear view and an exploded perspective view of the third embodiment with the rear cover (5) removed, and the third embodiment is configured by the same members as in the first embodiment. As a main portion different from the first embodiment, as a member that abuts on the inner periphery (21) of the kanuki, a part of the inner periphery (21) of the kanuki is not cut out, but is raised and protruded (4e 4f).

  As shown in FIGS. 6 and 7, the protruding portion (4 e, 4 f) in which a part of the inner periphery (21) of the kanuki is raised is on the kanuki (2) side of the surface of the casing inner periphery (12). A curved surface is provided so as to protrude. For this reason, the friction by the sliding contact of the cannula inner peripheral part (21) is reduced, and unlocking or locking can be performed smoothly even after long-term use. Further, as in the first embodiment, the protruding portions (4e, 4f) are not limited to being provided at the two locations shown in FIGS. 6 and 7, and are more than one location or two locations. It may be provided.

  In addition, the shape of the projecting portions (4e, 4f) is less than the surface of the casing inner peripheral portion (12) in order to reduce the friction caused by sliding contact of the inner peripheral portion (21) of the kanuki as in the first embodiment. A shape projecting toward the kanuki (2) side is preferable, and in order to further reduce the friction, it is more preferable that the surface has a curved surface at least in contact with the kanuki inner peripheral portion (21).

  In addition, the method for locking and unlocking kanuki (2) is the same as in Example 1.

Example 4
FIGS. 8 and 9 show a rear view and an exploded perspective view of the fourth embodiment with the rear cover (5) removed, and the fourth embodiment is composed of the same members as in the first embodiment. As a main part different from the first embodiment, as a member that comes into contact with the inner periphery (21) of the kanuki, a projecting member integrally formed with a mounting bracket (8a) for fixing the casing (1) to the bicycle ( 4g, 4h). As shown in FIG. 9, the mounting bracket (8b) used as a pair with the mounting bracket (8a) is not provided with the protruding members (4g, 4h).

  As shown in FIGS. 8 and 9, the protruding members (4g, 4h) provided on the mounting bracket (8a) are curved so as to protrude toward the kanuki (2) side from the surface of the casing inner peripheral portion (12). Is provided. For this reason, the friction by the sliding contact of the cannula inner peripheral part (21) is reduced, and unlocking or locking can be performed smoothly even after long-term use. Further, as in the first embodiment, the protruding members (4g, 4h) are not limited to being provided at the two places shown in FIGS. 8 and 9, and are more than one place or two places. It may be provided.

  Further, the shape of the projecting members (4g, 4h) is less than the surface of the casing inner peripheral portion (12) in order to reduce the friction caused by the sliding contact of the inner peripheral portion (21) of the kanuki as in the first embodiment. A shape projecting toward the kanuki (2) side is preferable, and in order to further reduce the friction, it is more preferable that the surface has a curved surface at least in contact with the kanuki inner peripheral portion (21).

  In addition, the method for locking and unlocking kanuki (2) is the same as in Example 1.

  In addition, in Examples 1-4 mentioned above, as a member fitted by the part which notched a part of casing inner peripheral part (12), a protruding member (4a-4d, 4g, 4h) or a cannula inner periphery By providing the protruding portion (4e, 4f) in which a part of the portion (21) is raised, the friction caused by the sliding contact of the inner peripheral portion (21) of Kankanuki was reduced. On the other hand, although not shown in the figure, the casing inner peripheral part (12) is not processed at all, and a projecting part is provided on the kanuki inner peripheral part (21) or so as to protrude from the kanuki inner peripheral part (21). By providing a columnar member, a spherical member, or the like as in Example 1, the invention may reduce the friction due to sliding contact of the inner periphery (21) of the kanuki.

DESCRIPTION OF SYMBOLS 1 ... Casing 11 ... Opening 12 ... Casing inner periphery 13 ... Boss part 2 ... Cannuki 21 ... Cannuki inner periphery 22 ... Cannuki notch 23 ... Cannuki lever 24 ... Cannuki outer periphery Portion 3 ... Energizing members 4a to 4d, 4g, 4h ... Projection member 4e, 4f ... Projection part 5 ... Back cover 51 ... Boss part mounting hole 6 ... Locking piece 61 .. Locking piece protrusion 7 ... Lock release mechanism 8a, 8b ... Mounting bracket 9 ... Key

Claims (4)

The opening faces the arc-shaped casing;
A cannula that is arranged to reciprocate between an unlocking position and a locking position in the casing;
A biasing member disposed in the casing and biasing the cannula to the unlocked position;
A projecting member or projecting part projecting from at least one of the casing inner circumferential part or the kanuki inner circumferential part of the kanuki,
A bicycle lock characterized by comprising:   2. The bicycle lock according to claim 1, wherein the projecting projecting member or projecting part is a member having a curved surface provided on an inner periphery of the casing. 2. The bicycle lock according to claim 1, wherein the protruding member or protruding portion is a portion having a curved surface formed on an inner peripheral portion of the casing. The bicycle lock according to any one of claims 1 to 3, wherein the projecting projecting member or projecting part is a part having a curved surface formed in an inner periphery of a kanuki. .

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