JP2014509355A - Car door lock - Google Patents

Abstract

The prior art has a problem in providing a lock to avoid an increase in unlocking force. A lock provided to solve this problem has a gripping mechanism including a rotation latch and a gripping portion that latches and engages the rotation latch. The rotation latch and the gripping portion have an anti-rotation surface for latch engagement. When the latch is engaged, the rotation prevention surface of the rotation latch abuts against the rotation prevention surface of the grip portion, thereby preventing the rotation latch from being rotatable in the direction of the unlocked position. The lock also includes a component having a contact surface against which an anti-rotation surface of the rotation latch abuts at an unlocking position of the gripping mechanism. First of all, this abutment prevents a situation where dust can be deposited on the anti-rotation surface of the rotary latch in the unlocked position. In addition, this bump reduces dust penetration into the gripping mechanism. Thereby, the increase in the unlocking force accompanying the increase in the service life can be avoided.
[Selection] Figure 2

Description

  The present invention relates to a door or tailgate / gate lock with a gripping mechanism having a rotation latch and a pawl that latches and engages the rotation latch. Such a lock is known, for example, from DE 103 20 457 A1.

  With the lock described above, it is possible to temporarily lock the opening of the car or building using a door or a tailgate / gate. In such a locked state, the rotary latch grips around an arcuate clamping bolt that is typically attached to the vehicle body, particularly in the case of a vehicle. When the rotation latch reaches the lock position after pivoting from the unlocked position by the tightening bolt, the rotation latch is finally latched by the claw portion. In this case, the anti-rotation surface of the claw abuts against the anti-rotation surface of the rotation latch, and prevents the rotation latch from turning so as to return to the unlocked position. The clamping bolt can no longer escape from the gripping mechanism in the locked position. In the locked position, the rotation latch and the metallic anti-rotation surface of the pawl are engaged with each other while being latched.

  In order to unlock, the claw portion needs to move away from the latch engagement position. Once the pawl is moved away from its latch engagement position, the rotation latch rotates in the direction of the unlocked position. In the unlocked position of the rotary latch, i.e. in the unlocked position of the gripping mechanism, the clamping bolt can be released from the lock. Thereby, the door and the tailgate can be opened again.

  The rotation of the rotary latch in the direction of the unlocked position after the pawl has moved out of its latched position can be caused by the sealing pressure of the respective door or tailgate or by a spring. Such rotation can also be caused by the clamping bolt being removed from the gripping mechanism.

  The lock can include two different latch engagement positions of the rotary latch. The rotation latch is initially latched into a so-called intermediate locking position and subsequently swiveled into the locking position or into the so-called complete locking position. In the intermediate locking position, the clamping bolt cannot be removed from the gripping mechanism, however, each door or tailgate / gate is not fully locked. Only when the rotary latch is rotated to the fully locked position and latched in this position is such a door or tailgate / gate fully locked.

  The rotation latch and the claw portion are generally rotatably mounted on the base portion of the lock case. The lock case is usually made of metal to ensure stable fixation. In addition, the device typically includes an existing lock housing that includes a lock housing cover that protects against dirt and moisture, among other factors and in terms of weight. The lock housing and the lock case form a notch for entering the clamping bolt into the gripping mechanism or into the notch slot of the rotary latch.

  The above characteristics can be individual parts or any combination part of the lock of the present invention, unless something else is explicitly disclosed.

  If the two anti-rotation surfaces are pressed against each other for latching and dust accumulates on the surface, the force required to unlock the gripping mechanism may increase with increasing years of use. is there. In order to reduce the unlocking force that can be generated by dust that gets into and accumulates on the anti-rotation surfaces that press towards each other, such anti-rotation surfaces of the rotation latch and the pawl are made of metal. Thus, the commonly used plastic coating is no longer needed. However, even when such a metal surface is used, the dust particles can cause the increase in unlocking force and further action is required.

  It is an object of the present invention to provide a lock that prevents an increase in the unlocking force.

  In order to solve this problem, the lock comprises the features of claim 1. Advantageous embodiments are given in the dependent claims.

  In order to solve this problem, the present invention provides a lock including a rotation mechanism and a gripping mechanism including a claw portion for engaging the rotation latch. The rotation latch and pawl include an anti-rotation surface for latching. In the latched state, the rotation prevention surface of the rotation latch abuts on the rotation prevention surface of the claw portion to prevent the rotation latch from rotating in the direction of the unlocked position. The lock also comprises a component with a contact surface comprising at least one contact surface against which the anti-rotation surface of the rotary latch abuts in at least one of the unlocked position and / or the latch engagement position. This is particularly due to the shape, i.e. the side of the load arm, when the rotating latch strikes one of the contact surfaces of the component in its latched engagement position. The abutting means, in this case the surface of the rotary latch, is arranged directly opposite the contact surface, both surfaces being separated only by a small gap. Preferably, the gap has a width of 0.5 mm or less, particularly preferably a width of 0.2 mm or less, and even more preferably a width of 0.1 mm or less. With the latch engaged, the narrower the gap, the less dust can enter the lock disadvantageously. By maintaining a small gap, frictional forces that can make the gripping mechanism more difficult to operate are avoided. Preferably, the surface of the rotating latch abuts against one contact surface of the component in the fully locked position and the intermediate locked position. In the latch engagement position of all gripping mechanisms, dust intrusion at the lock is reduced. When the anti-rotation surface of the rotation latch contacts the contact surface of the component at the unlocking position of the gripping mechanism, the surface of the rotation latch contacts the contact surface of the component. Next, the surface of the rotation latch that contacts the contact surface of the component is specifically the rotation prevention surface of the rotation latch. First of all, this arrangement prevents any dust in the unlocked position from accumulating on the anti-rotation surface of the rotating latch which may result in a greater unlocking force. This arrangement prevents any dust from entering the gripping mechanism in the unlocked position. This contributes to prevention of an increase in the unlocking force.

  When the gripping mechanism includes an intermediate locked position and a fully locked position, in the unlocked position, the anti-rotation surface of the rotation latch abuts against a contact surface that is used to latch in the fully locked position. In particular, in the case of dust accumulation, the anti-rotation surface of the rotary latch relative to the fully locked position results in an increase in the unlocking force, so that this anti-rotation surface of the rotary latch is advantageously protected against dust.

  In one embodiment, the anti-rotation surface of the rotation latch that contacts the contact surface in the unlocked position is made of metal. Preferably, the component with the contact surface is made of an elastomer. When the component with the contact surface is made of an elastomer, an advantageous particularly tight connection is created between the anti-rotation surface and the contact surface of the rotation latch in the unlocked state of the gripping mechanism. In particular, this effectively prevents any dust intrusion that can result in an increase in unlocking force.

  In one embodiment, a component with a contact surface is supported laterally by one of two walls that abut against or are disposed against the contact surface. The wall contributes to the stable positioning of the component with the contact surface. Therefore, the dust prevention effect of the component having the contact surface is further improved.

  In order to minimize the number of components, one of the two walls is preferably made of a single piece and preferably connected by a plastic lock housing.

  In a preferred embodiment, the component with the contact surface is simultaneously a damping member for a clamping bolt and / or a rotating latch. Embodiments and advantages of the damping member are disclosed in DE 103 20 457 A1. When the component with the contact surface is also a damping member for the clamping bolt and / or the rotary latch, the known advantages of this embodiment are also in the manner disclosed in DE 103 20 457 A1. This can be achieved with this lock. The disclosures of DE 103 20 457 A1 are included in the present invention.

  Preferably, the damping member is designed as DE 103 20 457 A1 with an L-shaped insertion member for the loading groove. In addition, one embodiment of the dampening member includes a protruding extension that includes a contact surface. The one piece design keeps the number of components to a minimum.

  Specifically, the long L leg of the damping member is designed as a retaining leg in the manner disclosed in DE 103 20 457 A1 and for the reason disclosed, The short L leg damping member of the member is designed as a damping leg for the clamping bolt and the rotating latch.

  Preferably, in the manner disclosed in German Offenlegungsschrift 103 20 457 A1 and for the reasons disclosed, the retaining leg is a recess that facilitates a transverse sliding into the loading groove. including. In particular, in the manner disclosed in DE 103 20 457 A1 and for the reason disclosed, the damping leg is clamped on the inside with a bolt stop surface and on the outside with a rotary latch Includes stop surface. Preferably, in the manner disclosed in DE 103 20 457 A1 and for the reasons disclosed, the notches and the loading grooves are arranged essentially in parallel and relative to each other. Established. In one embodiment, in the manner disclosed in DE 103 20 457 A1 and for the reasons disclosed, the notch and the loading groove together form a notch insertion member for the lock housing. To do. Suitably, the damping leg protrudes at least partially from the incision insert in the manner disclosed in DE 103 20 457 A1 and for the reasons disclosed. In particular, in the manner disclosed in DE 103 20 457 A1 and for the reasons disclosed, the damping member is, for example, temporary for inserting an emergency locking tool. Including closed cover.

  One embodiment of the present invention includes a linear raised portion against which a rotating latch abuts. In particular, the rotating latch abuts on the linear ridge in all positions. The linear riser preferably starts from a step or protrusion of the component with a damping member or contact surface, and in particular, initially extends parallel to the notch of the lock. On the base inside the notch, in one embodiment, the arch-shaped ridge starts from the notch and initially extends in an arcuate shape at the inner end or around the base of the notch. Exists. The linear ridge further contributes to prevent dust from entering the lock. The linear ridge is specifically a part of the wall of the lock housing.

  The invention is described in detail below with reference to the figures.

FIG. 1 shows a latch engaging gripping mechanism having a rotating latch mounted rotatably. FIG. 2 shows a gripping mechanism in the unlocked position. FIG. 3 shows a damping member.

  FIG. 1 shows a gripping mechanism comprising a rotary latch 1 that is rotatably mounted and a claw portion 2 that is rotatably mounted. In FIG. 1, the gripping mechanism is in the intermediate locking position. The metal antirotation surface 3 of the rotation latch 1 is pressed against the metal antirotation surface 4 of the claw portion 2. Therefore, the rotation latch 1 cannot rotate counterclockwise at the unlocked position.

  The rotation latch 1 includes a further metal anti-rotation surface 5 that is pressed against the anti-rotation surface 4 of the pawl 2 in the fully locked position. When the rotary latch 1 shown in FIG. 1 is further rotated in the clockwise direction, the gripping mechanism is expected to be finally in the fully locked position. The stop member 6 formed by a ring made of an elastic material restricts the rotational movement of the rotary latch 1 in the counterclockwise direction as shown in FIG. 2 in addition to the clockwise direction.

  The wall 7 of the plastic lock housing is positioned below the rotary latch 1 shown in FIG. Below this plastic wall 7 is provided a shaft extending through the holes 8 and 9 of a metal, in particular a U-shaped rotary latch and claw, in order to provide a rotatable attachment. A retaining reinforcing plate is provided. Overall, the reinforcing plate extends in a U-shape around the notch of the lock. The two U-shaped legs include holes for receiving the two shafts. Only the metal side wall 10 of the lock case is shown so as not to obscure the view of the gripping mechanism. Accordingly, the base portion of the metal lock case of FIG. 1 is positioned above the rotary latch 1 and above the claw portion 2. The side wall 10 is formed at right angles to the base of the lock case. The side tabs 11 of the lock housing engage with the recesses of the lock case side wall 10 and serve to fix the lock housing wall 7 to the lock case. The lock housing wall 7 forms an integral part of the lock housing vertical wall 12. The transition from the lock housing wall 7 to the two walls 12 is in each case formed at a right angle. Including the proximity region of the lock plate, the wall 12 forms a cut for the clamping bolt. The notch can also be covered on one side by the wall of the lock housing. The walls 12 are funnel-shaped on the inside and are finally made of an elastomer and are positioned on the lower plane of the rotary latch and are generally short legs of a generally L-shaped damping member. It hits 13th. The short leg 13 can damp a clamping bolt that strikes the base of the funnel shaped part formed by the two wall regions 12. The short leg 13 is therefore also referred to as a damping leg.

  Apart from the protrusion 15, an L-shaped damping member is preferably provided and operates in the same manner as disclosed in DE 1020457A1.

  The damping member includes a long leg 14, also referred to as a fixing leg, at the end of which the protrusion 15 is arranged to extend upward in FIG. The protrusion 15 constitutes a component including the contact surface 16 and the contact surface 24 at the unlocking position of the gripping mechanism with respect to the main rotation prevention surface 5 of the rotation latch 1. At least the side curved portion 25 of the load arm of the rotary latch 1 abuts against the contact surface 24 in the fully locked position. The damping member is an integrally molded body and includes a protrusion 15 made of an elastomer. The two wall regions of the protrusion 15 are supported by the lock housing web 18 in addition to the lock housing wall region 17. The support wall region 17 extends vertically upward when viewed from the lock case surface 7. The web 18 includes sidewalls that extend in the same manner and also vertically upward. Such a side wall of the web 18 extends vertically upwards and supports a protrusion 15 that abuts against the side wall.

  The lock housing wall 7 initially extends parallel to the lateral boundary of the notch and in this case comprises a substantially linear linear ridge 26. Specifically, one end of the linear bulge portion is brought into contact with the stepped portion 23 of the damping member shown in FIG. 3 in the region where the damping member is lifted, or on the protruding portion 15 of the component having a contact surface. Head directly. On the inner end of the cut, the linear ridge 26 extends away from the cut and extends in an arcuate shape in the direction of the stop member 6. During its rotational movement, the rotary latch 1 always abuts on the linear ridge 26 and thus at any position. In general, the linear ridges contribute to less dust that can enter the interior of the lock.

  A respective linear ridge 27 is provided for the claw 2. The nail | claw part 2 contact | abuts on this linear protruding part 27 in each position. Again, this reduces the amount of dust that enters an important part of the lock.

  FIG. 2 shows the gripping mechanism in the unlocked position. The anti-rotation surface 5 of the rotation latch 1 abuts against the contact surface 16 of the protrusion 15 in the manner described above to prevent dust from entering. The circular stop member 6 also limits the counterclockwise rotational movement of the rotary latch 1. The arm of the claw portion 2 surrounding the rotation preventing surface 4 abuts against the curved portion on the side of the rotation latch 1 without engaging the latch. In general, the contact surface 6 is sufficient to limit the rotational movement of the rotary latch 1 in the unlocking direction, ie counterclockwise in FIG. Therefore, the stop member 6 is not necessarily required to limit the movement.

  FIG. 3 shows a preferred embodiment of an integrally molded body damping member comprising a short leg 13, a long leg 14, and a protrusion 15 protruding from one end of the long leg 14.

  The short leg 13 preferably includes a recess 19 to provide improved damping of the clamping bolt that strikes the side 20. The long leg 14 preferably includes a hole 21 into which a bolt (not shown) is inserted, which corresponds to the inner diameter of the hole 21 and preferably has a slightly larger outer diameter. The bolt is made of a corresponding inelastic material, in particular a hard plastic material. This improves the stability of the damping member when it is inserted into the respective recess, preferably the bolt being clipped therein. The recess can be formed by a lock housing or can be connected to form an integral molded body. Preferably, the recess is partly formed by the wall 12 of the incision that is stabilized as a result. The ribbed side of the damping member provided optionally facilitates insertion of the recess. Preferably, the (lower) surface facing the (upper) surface comprising the protrusions 15 restricts the insertion of the damping member into the recess and thus has a laterally projecting surface 22 to ensure correct insertion. Including. The recess includes a protruding tab that, when inserted, abuts against the (lower) surface facing the (upper) surface with the protrusion 15 to improve retention of the damping member in the recess. Can do. The tab is preferably also connected to the lock housing so as to form an integral molded body. A step 23 selectively provided on the (upper) surface can be inserted in the recess in the slot provided for this purpose in order to further improve the stability of the projecting part 15 against which it abuts.

1 ... Rotation latch 2 ... Nail part 3 ... Anti-rotation surface for intermediate locking position 4 ... Anti-rotation surface for claw part 5 ... Metal anti-rotation surface for full locking position 6 ... Stop member 7 ... Lock housing wall 8 ... Rotation latch hole 9 ... Nail hole 10 ... Lock case metal side wall 11 ... Lock housing side tab 12. ..Lock housing wall 13 ... Short damping leg 14 ... Long holding leg 15 ... Component part with protruding contact surface 16 ... Component contact surface 17 ... Lock housing 18 ... Lock housing web 19 ... Dampening leg recess 20 ... Dampening leg side 21 ... Holding leg hole 22 ... Dampening member surface 23 protruding sideways ... Step part of damping member 24 ... Contact surface 25 ... Side curve part 26 ... Linear ridge part for rotating latch 27 ... Linear ridge part for claw part

Claims (12)

A rotation latch (1), a claw portion (2) for latching engagement with the rotation latch, and a rotation preventing surface for latch engagement provided on the rotation latch (1) and the claw portion (2) ( 4 and 5) having a gripping mechanism,
The anti-rotation surface (5) of the rotation latch (1) abuts at the unlocking position of the gripping mechanism and / or the surface of the rotation latch (1) at at least one latch engagement position of the gripping mechanism A lock, characterized in that it has a component (15) with at least one contact surface (16) in contact with (25).   2. The lock according to claim 1, wherein the gripping mechanism includes an intermediate locking position and a complete locking position, and the anti-rotation surface (5) of the rotation latch that abuts on the contact surface in the unlocked state is latched in the complete locking position. A lock that works to engage.   10. The lock according to claim 1, wherein the anti-rotation surface (5) is made of metal and / or the component (15) with the contact surface is made of elastomer. A lock that is a thing.   Lock according to any one of the preceding claims, wherein the component (15) with the contact surface is supported by one or two walls (17) and / or a web (18). The lock that is.   Lock according to the preceding claim, wherein the wall (17) and / or the web (18) are joined and integrally molded with a lock housing, preferably made of plastic.   Lock according to any one of the preceding claims, wherein the component (15) with the contact surface is also a clamping bolt and / or a damping member for the rotary latch.   The lock according to the claim, wherein the damping member is an L-shaped insertion member (13, 14) for insertion into a loading groove and includes a projecting extension (15) having the contact surface (16). A lock that is a waste.   5. The lock according to claim 1, wherein the long L leg (14) of the damping member is a holding leg and the short L leg (13) of the damping member is a damping leg for the clamping bolt and the rotary latch. Lock.   Lock according to the preceding claim, wherein the component (15) with the contact surface comprises a holding arm (14) having a hole (21) into which a bolt made of rigid material is inserted. A lock according to any one of the preceding claims,
A lock having linear ridges (26) on which the rotating latch (1) is placed, in particular at each position of the rotating latch.   5. The lock according to claim 1, wherein the linear ridge (26) abuts on the component (15) with the contact surface or the step (15) on which the component (15) with the contact surface is located. A lock that is in contact with (23).   An automobile door comprising the lock according to any one of the preceding claims.

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