JP4700489B2 - Vehicle door lock device - Google Patents

Description

  The present invention relates to a vehicle door lock device that restricts movement of a vehicle door provided at an entrance of a vehicle in an opening direction.

Conventionally, a door lock device is provided in a vehicle. For example, as described in Patent Document 1, the door lock device includes a latch that is rotated in a closing direction (closing direction) by engagement with a striker fixed to the vehicle body side, and a direction in which the latch is engaged. And a ratchet (pole) that is pivotally biased by a spring. By the closing operation of the vehicle door, the latch is pushed by the striker and rotates in the closing direction, and the pole is engaged with the latch, and the vehicle door is held in the half door state or the fully closed state. Then, the vehicle door can be moved in the opening direction by rotating the pawl by operating the door handle to release the engagement with the latch.
JP 2003-113687 A

  By the way, in the door lock device having the above-described configuration, a lubricant such as grease is applied to the engaging portion between the latch and the pole in order to facilitate the rotation of the pole. However, when the latch that holds the vehicle door is rotated in the opening direction by the spring, the lubricant applied to the engaging portion is gradually wiped off in order to rotate the pawl engaged with the latch. It is done. As a result, the friction generated between the pawl and the latch increases, and the operability when releasing the engagement state between the latch and the pawl of the door lock device may be lowered.

  This invention is made | formed in view of such a situation, The objective is to provide the door lock apparatus for vehicles which can maintain favorable operativity for a long period of time.

With order to solve the above problems, provided rotatably, rotated to the closed direction by the striker engaging a latch which is biased to rotate in the opening direction, which act before SL latch against the force have a, a pole having a locking portion to prevent the rotation in the opening direction side of the latch, the latch is provided with an engaging portion, engaging the engagement portion with the locking portion The latch is a vehicle door lock device in which rotation of the latch toward the opening direction side is prevented, and the engagement portion holds the lubricant between the latch and the pawl. Is formed by shot peening .

  According to this configuration, since the holding recess is provided in the engaging portion, the lubricant can be held in the engaging portion. Therefore, when releasing the engagement between the latch and the pawl, the pawl can be easily rotated, and good operability of the vehicle door lock device can be maintained for a long time.

  According to a second aspect of the present invention, in the vehicle door lock device according to the first aspect, the engaging portion engages with the pawl when the latch is in a fully latched state.

  According to this configuration, since the holding recess is disposed in the first engagement portion, the lubricant can be held in the first engagement portion. Therefore, when releasing the engagement between the latch and the pawl in the full latch state, the pawl can be easily rotated, and better operability of the vehicle door lock device can be obtained.

  According to a third aspect of the present invention, in the vehicle door lock device according to the first aspect, the engagement portion includes a first engagement portion that engages with the pawl when the latch is in a fully latched state. And a second engaging portion that engages with the pawl when the latch is in a half latch state.

  According to this configuration, since the holding recesses are disposed in the first and second engaging portions, the lubricant can be held in the first and second engaging portions. Therefore, when releasing the engagement between the latch and the pawl in the full latch state or the half latch state, the pawl can be easily rotated, and better operability of the vehicle door lock device can be obtained. .

According to a fourth aspect of the present invention, there is provided a latch that is rotatably provided, is rotated in the closing direction by being engaged with the striker, and is urged to rotate in the opening direction. A vehicle door lock device comprising: a pawl provided with a locking portion that engages with a provided engaging portion and prevents rotation of the latch in an opening direction side against an urging force acting on the latch. The locking portion is a vehicle door lock device in which a plurality of holding recesses for holding a lubricant are formed between the latch and the pole by shot peening .

  According to this configuration, since the holding recess is provided in the locking portion, the lubricant can be held in the locking portion. Therefore, when releasing the engagement between the latch and the pawl, the pawl can be easily rotated, and good operability of the vehicle door lock device can be maintained for a long time.

  ADVANTAGE OF THE INVENTION According to this invention, the door lock apparatus for vehicles which can maintain favorable operativity for a long period can be obtained.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
As shown in FIG. 1, the vehicle body 1 is provided with a so-called swing type vehicle door 2 that is hinged to open and close the entrance / exit 1a. The vehicle door 2 includes a U-shaped (or U-shaped) striker 3 fixed to the vehicle rear side of the entrance / exit 1a, and a vehicle door lock device 4 provided at the rear side end of the vehicle door 2. Is held in a half door state or a fully closed state. As shown in FIG. 2, the vehicle door lock device 4 is connected to an outside door handle 5 a and an inside door handle 5 b provided on the outside and inside of the vehicle door 2, respectively. By transmitting the operation force from 5a, 5b, the engagement with the striker 3 is released, and the vehicle door 2 can be rotated.

  As shown in FIG. 3, the vehicle door lock device 4 includes a base 10 fixed to the vehicle door 2 (see FIGS. 1 and 2). An accommodation passage 11 is provided in a substantially central portion of the base 10. The accommodation passage 11 opens toward the closing direction side of the vehicle door 2 and extends along the rotation direction of the vehicle door 2 (see FIG. 2). The striker 3 is fixed to a portion of the vehicle body 1 that faces the vehicle door lock device 4. The striker 3 is accommodated in the accommodation passage 11 of the base 10 when the vehicle door 2 is in a fully closed state or a semi-closed state.

  A latch 20 is rotatably supported on the base 10 by a first support shaft 12 provided on the upper side of the accommodation passage 11. Further, a pole 30 is rotatably supported on the base 10 by a second support shaft 13 provided on the opposite side of the first support shaft 12 with the accommodation passage 11 interposed therebetween.

  The latch 20 includes an engagement recess 21 for restraining the striker 3, and a first claw portion 22 and a second claw portion 22 for engaging with the pole 30 on both sides in the circumferential direction across the engagement recess 21. It is formed in a substantially U shape having a claw portion 23.

The engaging recess 21 is formed so that the outer peripheral surface of the latch 20 is recessed toward the first support shaft 12.
The first claw portion 22 is provided with an engagement recess 21 on the opening direction side of the latch 20, and an engagement portion is provided at the tip of the first claw portion 22 on the opposite side of the engagement recess 21 (the opening direction side of the latch 20). As a first engaging portion 22a (see FIG. 6). The first engagement portion 22a has a first engagement surface 24a that engages with the pole 30, and a plurality of holding recesses 25a are formed on the engagement surface 24a by shot peening. Grease 40 as a lubricant is applied to the first engagement surface 24a (see FIG. 7). The grease 40 is held in the holding recess 25a. The second claw portion 23 is provided with an engagement recess 21 on the opening direction side of the latch 20, and the engagement claw 21 side (the opening direction side of the latch 20) as an engagement portion at the tip of the second claw portion 23. A second engagement portion 23a is formed (see FIG. 6). Like the first claw portion 22, the second engagement portion 23a has a second engagement surface 24b that engages with the pole 30, and the engagement surface 24b has a plurality of holding recesses 25b by shot peening. Is formed. Similar to the first engagement surface 24a, grease 40 is applied to the second engagement surface 24b (see FIG. 7). The grease 40 is held in the holding recess 25b.

  The latch 20 is rotated clockwise in the state shown in FIGS. 3 to 5 by engaging the other end of a latch biasing spring (not shown) having one end held by the base 10. It will be energized. The latch 20 is held in a state where the engagement recess 21 is disposed at a position where the engagement recess 21 is opened in the accommodation passage 11 of the base 10 by an engagement mechanism (not shown).

  The pole 30 has a substantially fan-shaped locking portion 31 having a circular arc surface coaxial with the second support shaft 13 at the tip thereof, and a locking surface 31 a is provided at the tip of the locking portion 31. ing. Further, the pole 30 is engaged with the other end of a pole biasing spring (not shown) whose one end is held by the base 10 so that the second support shaft 13 is rotated counterclockwise, that is, the It is biased in a direction to engage with the latch 20. The pawl 30 engages with the latch 20 by bringing the locking surface 31a into contact with the first engaging portion 22a and the second engaging portion 23a of the latch 20 from the counterclockwise direction. 20 rotations are restricted. The pole 30 is connected to the door handles 5a and 5b (see FIGS. 1 and 2), and rotates around the second support shaft 13 by operating the door handles 5a and 5b. When the pole 30 rotates, the engagement between the pole 30 and the latch 20 is released, and the latch 20 can be rotated in the opening direction.

Next, the operation of the vehicle door lock device 4 according to this embodiment will be described.
In the state in which the vehicle door 2 is opened, as shown in FIG. 3, the latch 20 is held at a predetermined rotation position, and the engagement recess 21 is operated to close the vehicle door 2. The opening which faces the approach path | route of the said striker 3 accompanying is accompanied. The state of the latch 20 at this time is referred to as an unlatched state.

  Next, when the striker 3 enters the accommodating passage 11 with the closing operation of the vehicle door 2, the inner wall surface 21 a of the engagement recess 21 is pushed by the striker 3. As shown in FIG. 4, the latch 20 rotates counterclockwise in the illustrated state against the latch biasing spring (not shown). The locking surface 31 a of the pole 30 faces the second engagement portion 23 a of the latch 20 while sliding on the outer peripheral surface of the latch 20. Then, the pawl 30 is engaged with the second engaging portion 23a from the opening direction side, and the rotation of the latch 20 is restricted. Therefore, the striker 3 is restricted from moving in the opening direction along the accommodation passage 11 by the engagement recess 21. The state of the latch 20 at this time is called a half latch state, and the vehicle door 2 is in a half door state.

  Subsequently, when the striker 3 further enters the accommodation passage 11 as the vehicle door 2 is further closed, the inner wall surface 21 a of the engagement recess 21 is pushed by the striker 3. As shown in FIG. 5, the latch 20 further rotates counterclockwise in the illustrated direction against the latch biasing spring (not shown). The pawl 30 is slidably contacted with the outer peripheral surface of the latch 20 and is spaced apart from the second engaging portion 23a of the latch 20 and faces the first engaging portion 22a. Then, the pole 30 is engaged with the first engagement portion 22a from the opening direction side, and the rotation of the latch 20 is restricted. Therefore, the striker 3 is restricted from moving in the opening direction along the receiving passage 11 by the engaging recess 21 as in the half latch state. The state of the latch 20 at this time is referred to as a full latch state, and the vehicle door 2 is in a fully closed state.

  Further, in the above-described half latch state or full latch state, when the pawl 30 is rotated in the clockwise direction in the figure against the pole biasing spring, the first engagement portion 22a or the second engagement by the pawl 30 is performed. The locking of the joint portion 23a is released. At this time, the latch 20 is urged by a latch urging spring (not shown) and rotates in the clockwise direction in the drawing while pressing the striker 3 by the inner wall surface 21a of the engaging recess 21. Then, by the engagement release operation of the vehicle door lock device 4, the movement restriction of the striker 3 by the engagement recess 21 is released, and the vehicle door 2 can be opened.

  By the way, as described above, due to the rotation of the latch 20 when the vehicle door 2 is closed, an elastic force is accumulated in the latch biasing spring (not shown) (reaction force due to the weather strip of the vehicle door 2). Added). Therefore, in the half latch state and the full latch state, the pawl 30 is in pressure contact with the first engagement portion 22a or the second engagement portion 23a of the latch 20. Therefore, in the disengagement operation of the vehicle door lock device 4, the grease 40 applied to the latch 20 is wiped off, the friction generated between the pawl 30 and the latch 20 is increased, and the pawl 30 is rotated. May be disturbed. According to the vehicle door lock device 4 according to the present embodiment, as shown in FIG. 7, the first engagement portion 22a and the second engagement portion 23a of the latch 20 have engagement surfaces 24a and 24b. Since the holding recesses 25a and 25b are provided, a space S is formed between the latch 20 and the pole 30 as shown in FIG. 8, and the grease 40 can be held in the space S.

As described above, the present embodiment has the following effects.
(1) Since the holding concave portions 25a and 25b are provided in the first engaging portion 22a and the second engaging portion 23a, the grease 40 applied to the first engaging portion 22a and the second engaging portion 23a is held in the holding concave portion 25a. 25b, and it is possible to prevent the first engagement portion 22a and the second engagement portion 23a from causing an oil film breakage and an increase in the frictional force between the latch 20 and the pole 30. Therefore, when the engagement between the latch 20 and the pawl 30 is released, the pawl 30 can be easily rotated, and good operability of the vehicle door lock device 4 can be maintained for a long period of time. Further, since the lubricant is held in the holding recesses 25a and 25b, the lubricant applied to the first engaging portion 22a and the second engaging portion 23a is removed from the first engaging portion 22a and the second engaging portion 23a. It becomes possible to prevent scattering, and it is possible to prevent the occurrence of problems such as the lubricant adhering to other members such as the striker 3.

  (2) Since the holding recess 25a is disposed on the first engagement surface 24a, the grease 40 can be accurately supplied to the first engagement surface 24a. Therefore, the engagement between the latch 20 and the pawl 30 in the fully latched state can be easily released, and better operability of the vehicle door lock device 4 can be obtained. In addition, since the holding recess 25a is disposed on the first engagement surface 24a that is in pressure contact with the pole 30, the grease 40 that may be wiped off when the pole 30 engaged with the latch 20 rotates is held. It becomes possible to fasten to the recessed part 25a, and the favorable operativity of the vehicle door lock device 4 can be maintained for a longer period.

  (3) Since the holding recess 25b is disposed on the second engagement surface 24b, the grease 40 can be accurately supplied to the second engagement surface 24b. Therefore, the engagement between the latch 20 and the pawl 30 in the half latch state can be easily released, and better operability of the vehicle door lock device 4 can be obtained. In addition, since the holding recess 25b is disposed on the second engagement surface 24b that is in pressure contact with the pole 30, the grease 40 that may be wiped off when the pole 30 engaged with the latch 20 rotates is held. It becomes possible to fasten to the recessed part 25b, and the favorable operativity of the vehicle door lock apparatus 4 can be maintained for a long period of time.

  (4) Since the plurality of holding recesses 25a and 25b are provided on the engagement surfaces 24a and 24b of the first engagement portion 22a and the second engagement portion 23a, the first engagement portion 22a and the second engagement portion The lubricant can be held in a wide range of 23a. Therefore, the lubricant can be supplied uniformly over a wide range of the first engaging portion 22a and the second engaging portion 23a, and the operability of the vehicle door lock device 4 can be further improved.

  (5) Since the engagement surfaces 24a and 24b are formed on the first engagement portion 22a and the second engagement portion 23a by shot peening, the holding recess without generating flash due to the holding recess by cutting. Can be provided.

  (6) The first engaging portion 22a and the second engaging portion 23a are formed by forming a plurality of holding recesses 25a and 25b on the engaging surfaces 24a and 24b of the first engaging portion 22a and the second engaging portion 23a. The surface of becomes uneven. Therefore, adhesion (sustainability) of a coating agent such as molybdenum can be improved.

In addition, you may change embodiment of this invention as follows.
-In the said embodiment, although provided in the 1st engaging part 22a and the 2nd engaging part 23a of the latch 20, a holding | maintenance recessed part is a part in which the latch 20 and the pole 30 engage in the latch 20 and the pole 30. For example, a holding recess may be provided on the locking surface 31 a of the pole 30. According to such a configuration, since the retaining recess 31 is provided in the locking portion 31, a lubricant is provided between the latch 20 and the pole 30 regardless of whether the latch 20 is in a full latch state or a half latch state. Can be held. Therefore, the lubricant can be held between the latch 20 and the pole 30 in the full latch state and the half latch state by processing only the pole 30. In the above embodiment, the holding recesses 25 a and 25 b are provided only in the latch 20, but may be provided in both the latch 20 and the pole 30.

  -In the said embodiment, although holding | maintenance recessed part 25a, 25b is provided in the 1st engaging part 22a and the 2nd engaging part 23a, it is not limited to such an aspect, It is provided only in either one. Also good.

  In the above embodiment, the first engagement surface 24a and the second engagement surface 24b of the first engagement portion 22a and the second engagement portion 23a are provided with a plurality of holding recesses 25a and 25b. The grooves formed in the first engagement surface and the second engagement surface can be used as holding recesses.

  In the above embodiment, the swing type door is shown as the vehicle door, but it can also be used for a sliding door. Moreover, it can also be used for the trunk door provided in the vehicle rear part.

  In the above embodiment, the holding recesses 25a and 25b are formed by shot peening, but the processing method can be changed as appropriate.

The front view of the vehicle door seen from the vehicle outer side. The top view of a vehicle door. Schematic of the door lock device when in an unlatched state. Schematic of the door lock device when in a half latch state. Schematic of the door lock device when in a fully latched state. Schematic of a part of door lock device. The partial enlarged view of a door lock apparatus. The partial enlarged view of a door lock apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 2 ... Vehicle door, 3 ... Striker, 4 ... Door lock device for vehicles, 20 ... Latch, 22a ... 1st engaging part as an engaging part, 23a ... 2nd engaging part as an engaging part, 24a ... 2nd 1 engaging surface, 24b ... 2nd engaging surface, 25a, 25b ... holding | maintenance recessed part, 30 ... pole, 31 ... latching | locking part.

Claims (4)

A latch that is pivotably provided, pivots in a closing direction by engaging with a striker, and is biased to pivot in an opening direction;
Possess a pawl having an engagement portion that prevents rotation in the opening direction side of the latch against the biasing force acting on the front SL latch, wherein the latch includes an engagement portion, the engagement portion Is a vehicle door lock device that is prevented from rotating in the opening direction of the latch by engaging with the locking portion ,
The vehicle door lock device according to claim 1, wherein the engaging portion includes a plurality of holding recesses for holding a lubricant between the latch and the pole by shot peening . The vehicle door lock device according to claim 1, wherein the engaging portion engages with the pawl when the latch is in a fully latched state. The engaging portion includes a first engaging portion that engages with the pawl when the latch is in a fully latched state, and a second engaging portion that engages with the pawl when the latch is in a half latched state. The vehicle door lock device according to claim 1, wherein: A latch that is pivotably provided, pivots in a closing direction by engaging with a striker, and is biased to pivot in an opening direction;
A vehicular door comprising: a pawl provided with an engaging portion that engages with an engaging portion provided in the latch and prevents rotation of the latch in an opening direction side against an urging force acting on the latch; A locking device,
The vehicular door lock device according to claim 1, wherein a plurality of holding recesses for holding the lubricant are formed by shot peening processing between the latch and the pawl.

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