JP2008057324A - Lock device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lock device for vehicles inhibiting noises at the time of locking and unlocking without disturbing the smooth turning motion of a hook by giving the hook an appropriate turning resistance. <P>SOLUTION: An outer flange is formed on a turning shaft of the hook provided on a base plate and having restriction in the tuning motion. The hook comprises a metallic core member and a synthetic resin coating member coating at least an abutting groove abutting on a striker and an abutting section abutting on the turning shaft in the outer surface of the metallic core member. The synthetic resin coating member is provided with an annular turning-resistance-causing protrusion formed concentrically with the turning shaft and abutting on the outer flange. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle locking device.

The vehicle locking device includes a striker, and a hook and a ratchet that grip and release the striker as basic components. The hook and the ratchet are pivotally attached to the base plate, and one of the striker and the base plate is fixed to the vehicle body, and the other is fixed to the vehicle door.
JP-A-4-293875 JP-A-4-131484

  In this vehicle locking device, abnormal noise is generated during rotation due to the clearance between the hook and the rotation center axis thereof. Conventionally, various proposals have been made in order to prevent the occurrence of this abnormal noise, but there has been a problem that the rotational resistance of the hook becomes too large, or conversely, the effect of preventing the abnormal noise is small.

  The present invention provides a vehicle locking device that can prevent occurrence of abnormal noise at the time of unlocking or locking without impeding smooth rotation of the hook by giving an appropriate rotational resistance to the hook. With the goal.

  A vehicle locking device according to the present invention includes a striker fixed to one of a vehicle body and a vehicle door; and a hook and a ratchet that have an entrance opening for the striker and grip and release the striker that has entered the entrance opening. A vehicle locking device having a vehicle body and a base plate fixed to the other of the vehicle doors, wherein an outer flange is formed on a rotation center axis of the hook provided on the base plate, and the hook is It is composed of a metal core material and a synthetic resin coating material that covers at least the contact groove of the outer surface of the metal core material with the striker and the contact portion with the rotation center axis. It is characterized in that an annular rotation resistance imparting projection that is concentric with the rotation center axis and abuts on the outer flange is formed.

  According to the present invention, when the hook rotates in the vicinity of the lock end, the hook does not rattle, so no noise is generated, and the rotation resistance of the hook does not increase too much.

First, a reference example having the same basic structure as the present invention will be described with reference to FIGS.
As shown in the figure, the base plate 3 made of a metal material of the door lock device 1 is fixed to either the vehicle body or the vehicle door of the automobile, for example, the vehicle door, and the striker 5 held and released by the door lock device 1 is For example, it is fixed to the vehicle body. Most of the front surface of the base plate 3 is a storage recess 3a that is recessed from the other portions. A striker entry groove (entrance opening) 7 is formed in the base plate 3, and a hook 13 and a ratchet 15 located in the storage recess 3 a are respectively attached to shafts 9 and 11 erected on both sides of the striker entry groove 7. It is pivotally attached so that it can rotate freely.

The hook 13 is obtained by covering a metal core member 16 with a covering material 17 made of synthetic resin. The metal core 16 has a rotation support hole 16a that is rotatably fitted to the shaft 9, a U-shaped groove 16b, a full lock locking portion 16c, and a half lock locking portion 16d. The covering material 17 is placed on a portion of the metal core member 16 excluding the full lock locking portion 16c and the half lock locking portion 16d, and the striker that covers the mounting hole 17a for passing the shaft 9 and the U-shaped groove 16b. A holding groove 17b is provided. Further, a first fin member 17c and a second fin member 17d that can be elastically contacted with the wall surface 3a1 of the housing recess 3a are provided at two locations on the peripheral surface of the covering material 17 by integral molding. , 17d are free ends.
The hook 13 is always urged to rotate clockwise in FIG. 1 by a spring (not shown).

The ratchet 15 (shown in phantom only in FIG. 1) includes a lock portion 15a that can be engaged with and disengaged from the full lock engagement portion 16c and the half lock engagement portion 16d of the hook 13, and a spring not shown in the figure. It is always urged to rotate counterclockwise in FIG. The ratchet 15 is linked to an opening lever provided on the vehicle door via a connecting rod, an open lever, etc. (not shown).
The front surface of the base plate 3 is covered with a cover member (not shown) so that the hook 13, ratchet 15 and the like are not exposed.

  When the vehicle door is in the fully closed state, as shown by the solid line in FIG. 1, the door lock device 1 engages the striker 5 with the striker holding groove 17 b, as well as the full lock locking portion 16 c of the hook 13 and the ratchet 15. The lock portion 15a is engaged and is in a full lock state. When the opening lever is turned to the open position, the ratchet 15 is turned clockwise in FIG. 1, and the engagement between the full lock locking portion 16c and the lock portion 15a is released, and the vehicle door is slightly opened in this state. Then, the hook 13 is slightly rotated clockwise by the biasing force of the spring. Thereafter, when the door opening lever is returned to the original position, the lock portion 15a engages with the half-lock engaging portion 16d, and the door lock device 1 enters the half-lock state (see the phantom line in FIG. 1; however, ratchet Is not shown). When the door opening lever is rotated to the open position and the vehicle door is further rotated in the opening direction, the engagement between the lock portion 15a and the half lock engagement portion 16d is released, and as shown in FIG. The hook 13 is further rotated clockwise by the force, the striker 5 is released from the striker holding groove 17b and the striker entry groove 7, and the door lock device 1 is unlocked.

As described above, this reference example suppresses the generation of abnormal noise when the hook 13 rotates between the full lock position and the lock release position. As described above, since there is a clearance between the rotation support hole 16a of the hook 13 and the shaft 9, there is a possibility that abnormal noise may be generated during the rotation. However, in this embodiment, during the rotation of the hook 13, the first fin member 17 c is always in elastic contact with the wall surface 3 a 1 and presses the hook 13 so that the rotation support hole 16 a contacts the shaft 9. Therefore, the hook 13 does not rattle with respect to the shaft 9, so that no abnormal noise is generated. Moreover, since the first fin member 17c is formed in a fin shape, the rotational resistance of the hook 13 does not become too large.
Further, when the hook 13 is rotated from the full lock position to the lock release position, the reaction force received by the first fin member 17c from the wall surface 3a1 becomes a force that urges the hook 13 toward the lock release position. Can be smoothly rotated toward the unlocked position.

  Further, as shown in FIG. 2, when the hook 13 is moved to the unlocking position, the second fin member 17d is elastically contacted with the wall surface 3a1 to prevent the hook 13 from directly contacting the wall surface 3a1. Therefore, damage to the hook 13 and the wall surface 3a1 can be prevented.

Next, an embodiment of the present invention having the same basic structure as this reference example will be described with reference to FIGS. The same members as those in the reference example are designated by the same reference numerals, and detailed description thereof is omitted.
Note that the same members as those in the reference example are given the same reference numerals, and detailed descriptions thereof are omitted.

As shown in FIG. 4, an annular flange (outer flange) 9 a is provided at the longitudinal intermediate portion of the shaft 9 of the present embodiment, and the covering material 17 has first and second portions. Instead of the fin member being provided, an annular protrusion 17e surrounding the periphery of the mounting hole 17a is formed on the back surface thereof. The entire inner peripheral surface of the annular protrusion 17e is in elastic contact with the peripheral surface of the flange 9a.
As shown in FIG. 4, the storage recess 3a is provided with an arc-shaped groove 3a2 centering on the shaft 9, and the back surface of the metal core 16 is fitted to the groove 3a2 so as to be relatively movable. A protrusion 16e is provided, and the hook 13 is always urged to rotate clockwise in FIG. 1 by the spring S disposed in the groove 3a2 pressing the protrusion 16e. Further, the front surface of the base plate 3 is covered with a cover member 19 so that the hooks 13 and the like are not exposed.

  According to the present embodiment, when the hook 13 rotates between the locked position and the unlocked position, the inner peripheral surface of the annular protrusion 17e is always in elastic contact with the peripheral surface of the flange portion 9a. The hook 13 does not rattle with respect to the shaft 9, so that no abnormal noise is generated, and the rotational resistance of the hook 13 does not become too large.

  The base plate 3 may be made of synthetic resin.

It is a front view which removes a cover member and shows the full lock state of the door lock device of a reference example. Similarly, it is a front view of a lock release state. Similarly, it is a front view of a hook. It is a vertical side view of the principal part of the door lock device of one embodiment of the present invention. Similarly, it is a front view of a hook. Similarly, it is a side view of a hook.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door lock device 3 Base plate 3a Storage recessed part 3a1 Wall surface 3a2 Groove 5 Striker 7 Striker entrance groove (entrance opening)
9 Shaft 9a collar (outer flange)
11 Shaft 13 Hook 15 Ratchet 15a Locking part 16 Metal core 16a Rotating support hole 16b U-shaped groove 16c Full lock locking part 16d Half lock locking part 16e Protrusion 17 Covering material 17a Mounting hole 17b Striker holding groove 17c First fin Member (Fin member)
17d Second fin member 17e Annular protrusion 19 Cover member S Spring

Claims (1)

A striker fixed to one of the vehicle body and the vehicle door;
A base plate fixed to the other of the vehicle body and the vehicle door, which has an entrance opening for the striker, and is pivotally attached with a hook and a ratchet for gripping and releasing the striker that has entered the entrance opening;
In the vehicle locking device having
An outer flange is formed on the pivot center axis of the hook provided on the base plate,
The hook is composed of a metal core, and a synthetic resin coating covering the contact groove with at least the striker on the outer surface of the metal core and the rotation center shaft,
A vehicular locking device characterized in that an annular rotation resistance imparting projection that is concentric with the rotation center axis and abuts against the outer flange is formed on the synthetic resin covering material.

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