JP2008149950A - Hood lock structure - Google Patents

Abstract

A hood lock structure capable of reducing a pushing load from the upper side of a hood required when the hood is closed while securing a hop-up force at the time of unlocking.
An urging mechanism unit 70 can urge the striker 16 in the opening direction of the hood 14 and, together with the hop-up spring 42, moves the striker 16 in the opening direction of the hood 14 from a hop-up position. It can be moved in a direction against its urging force, and can be held in the retreat position 70X retreated from the hop-up position.
[Selection] Figure 2

Description

  The present invention relates to a hood lock structure in which a lock member provided on a vehicle body side can be engaged with a striker provided on a hood side.

  In the hood lock mechanism provided in the front part of the vehicle, a hop-up spring for hop-up biases the latch (lock member) in the unlocking direction, and when the lock is released, the latch is biased upward of the vehicle to strike the striker. The hood is pushed up and held through the gap (for example, see Patent Document 1). In this conventional structure, when the hop-up force is increased, when the hood is closed, on the contrary, this becomes a large resistance force, so that the pushing load for closing the hood is inevitably increased.

In addition, if the hop-up force is increased, the hood front end (near the striker) is reduced in order to reduce the impact load input from the hood to the collision body when the collision body collides with the hood. Pushing by hand against the biasing force to close can cause distortion in the hood. In particular, when the arrangement position of the hood lock mechanism is separated from the hood front end toward the hood rear side, a large force is applied near the hood front end.
JP 2006-22488 A

  In view of the above facts, the present invention has an object to provide a hood lock structure that can reduce the pushing load from the upper side of the hood required when the hood is closed while ensuring the hop-up force when unlocking. To do.

  The hood lock structure of the present invention described in claim 1 is provided on the vehicle body side, and engages with a striker provided on the hood side to hold the striker, and a non-lock position that does not engage with the striker. A locking member that is movable between the holding member, a holding member that can hold the locking member in the locking position, and a biasing member that is connected to the locking member and biases the locking member toward the unlocking position. A first urging means capable of urging the striker in the opening direction of the hood via the lock member, and a urging force of the striker in the opening direction of the hood, together with the first urging means It is possible to move from the hop-up position where the striker is moved in the opening direction of the hood in a direction against its urging force, and retreat from the hop-up position. And having a second biasing means which is capable of holding a has been retracted position.

  According to the hood lock structure of the present invention described in claim 1, the lock member is movable to the lock position for holding the striker, and the lock member in the lock position is held by the holding member. Thus, the engagement state between the lock member and the striker is maintained. The first urging means connected to the lock member urges the lock member in the direction of the non-lock position and can urge the striker in the hood opening direction via the lock member. Since the means can urge the striker in the direction of opening the hood, when the holding state of the lock member and the second urging means is released, the resultant force of the urging forces of the first urging means and the second urging means , Striker, and eventually the hood moves in the direction of hood opening. Thus, the hop-up force for urging the hood in the opening direction is divided into the urging force by the first urging means and the urging force by the second urging means, so that each urging force ( Each of the urging force by the first urging means alone and the urging force by the second urging means alone can be set smaller than the necessary hop-up force as a whole.

  Further, since the second urging means can move from the hop-up position in a direction against its urging force and can be held at the retreat position retracted from the hop-up position. When the hood is closed with the means held at the retracted position, the urging force by the first urging means acts on the hood as a resistance force, but the urging force by the second urging means does not act on the hood. Therefore, the hood is not moved against the resultant force of the first urging means and the second urging means, but can be set smaller than the necessary hop-up force as a whole. The movement is made against the urging force of only the first urging means.

  A hood lock structure according to a second aspect of the present invention is the hood lock structure according to the first aspect, wherein the holding member is rotationally movable and holds the lock member in the lock position. A first pole that is biased to the first pole, provided separately from the first pole, and capable of holding the second biasing means in the retracted position and being capable of rotating and retracting. A second pole biased in the direction of the second holding position holding the second biasing means at the position, and the second pole only when the second pole moves in a direction to retract from the second holding position. And interlocking means for moving the first pole in a direction of retreating from the first holding position by interlocking the first pole with the movement of two poles.

  According to the hood lock structure of the present invention as set forth in claim 2, the interlocking means is provided only when the second pole moves in the retracting direction from the second holding position holding the second urging means. Since the first pole is moved in the direction of retreating from the first holding position for holding the lock member in conjunction with the movement, the release operation for releasing the holding by the second pole can be used to release the lock member by the first pole. Both the holding and the holding of the second urging means by the second pole can be released.

  Further, even if the first pole moves in the retracting direction from the first holding position, the second pole does not interlock. Therefore, in the state where the second urging means at the retracting position is held by the second pole, the lock member is When the first pole is held, the position of the second pole is not changed, and only the first pole is temporarily retracted from the first holding position and then returned to the first holding position, whereby the lock member is attached to the first pole. Can be retained. This makes it possible to hold the second biasing means on the second pole at the retracted position before holding the lock member at the lock position by the first pole.

  A hood lock structure according to a third aspect of the present invention is the configuration according to the first or second aspect, wherein the hood lock structure restricts movement of the hood in the opening direction and restricts movement of the hood in the opening direction. When the movement restriction means moves from the restriction position to the release position in a state where the second urging means is at the hop-up position. And an interlocking part that moves the second urging means from the hop-up position to the retracted position in conjunction with the movement of the movement restricting means.

  According to the hood lock structure of the present invention described in claim 3, when the movement restricting means moves from the restriction position to the release position while the second urging means is at the hop-up position, the movement restricting means is interlocked with the movement. Since the interlocking unit moves the second urging means from the hop-up position to the retracted position, the movement restricting means can be moved without separately moving the second urging means from the hop-up position to the retracted position when opening the hood. With this movement, the second urging means moves to the retracted position and is held.

  According to a fourth aspect of the present invention, there is provided the hood lock structure according to the third aspect, wherein the interlocking portion is interlocked with the movement of the movement restricting means and engageable with the second biasing means side. A mating portion and an engaged portion that is provided on the second biasing means side and can be engaged with the engaging portion only in a state where the movement restricting means moves from the restricting position toward the releasing position; It is characterized by providing.

  According to the hood lock structure of the present invention as set forth in claim 4, the engaging portion is interlocked with the movement of the movement restricting means, and only when the movement restricting means moves from the restricted position toward the release position. Since it can be engaged with the engaged portion on the biasing means side, when the movement restricting means is moved from the restricted position to the release position in order to open the hood, the engaging portion is connected to the engaged portion. By engaging, the interlocking portion moves the second urging means from the hop-up position to the retracted position while interlocking with the movement of the movement restricting means. On the other hand, after opening the hood, the movement restricting means is moved from the release position to the restricted position. Since the engaging portion does not engage with the engaged portion when moved back in this direction, the second urging means is held in the retracted position without being interlocked with the movement of the movement restricting means.

  As described above, according to the hood lock structure of the first aspect of the present invention, the hop-up force when unlocking is secured by the resultant force of the urging forces of the first urging means and the second urging means. However, since the urging force by the second urging means is not a resistance force when the hood is closed, there is an excellent effect that the pushing load from the upper side of the hood required when the hood is closed can be reduced.

  According to the hood lock structure of the second aspect, the second urging means is moved to the retracted position before the lock member is held by the first pole while facilitating the release of the holding by the first pole and the second pole. Since it can be held by two poles, it has an excellent effect that the pushing load from the upper side of the hood required when the hood is closed can be reduced.

  According to the hood lock structure of the third aspect, the second urging means can be moved from the hop-up position to the retracted position by moving the movement restriction means from the restriction position to the release position when opening the hood. It has an excellent effect of being able to.

  According to the hood lock structure of claim 4, the second urging means can be moved from the hop-up position to the retracted position by moving the movement restricting means from the restricted position toward the release position, and the movement Even if the restricting means is returned from the release position toward the restricting position, the second urging means can be held at the retracted position.

[First Embodiment]
A hood lock structure according to a first embodiment of the present invention will be described with reference to the drawings. In the figure, the arrow UP indicates the upward direction of the vehicle, and the arrow FR indicates the forward direction of the vehicle.

  As shown in FIG. 1, a hood 14 that covers the engine room 12 so as to be openable and closable is disposed in the vehicle front portion 10. A hinge (not shown) is provided at the rear end portion of the hood 14 in the vehicle front-rear direction, so that the hood 14 can be rotated around an axis in the vehicle width direction of the hinge (not shown). ing. A striker 16 (see FIG. 2) is attached to the front end portion 14A of the hood 14 on the lower surface side of the central portion of the hood width direction (the same direction as the vehicle width direction) by welding. A hood lock mechanism 20 is disposed in the engine room 12 corresponding to the central portion of the front end portion 14A of the closed hood 14 in the hood width direction, that is, corresponding to the striker 16 (see FIG. 2). .

  As shown in FIG. 2, the hood lock mechanism 20 includes a plate-like base 22 formed in a substantially cross shape when viewed from the front of the vehicle. The base 22 of the present embodiment is disposed so that a pair of plate-like portions are opposed to each other with a space in the vehicle front-rear direction. The same applies to the front view of the base 22. In the central portion of the base 22 in the width direction, a notch 24 that opens at the upper end of the base 22 and that has a longitudinal direction substantially along the vehicle vertical direction penetrates in the thickness direction of the base 22. The striker 16 is formed into a substantially U shape in a side view. In addition, the base 22 is provided with mounting pieces 26 at both ends in the vehicle width direction and at the lower end of the vehicle. Each mounting piece 26 is attached to the vehicle body by a fastener 28 (for example, a bolt and a nut). It is fixed to a radiator support upper 18 as a part.

  A latch 30 as a lock member and a first pole 50 as a holding member are attached to the base 22 so as to be rotatable about an axis in the front-rear direction of the vehicle. Yes. As shown in FIGS. 2 and 4, the latch 30 has a plate shape, the vehicle longitudinal direction is the plate thickness direction, and the pin 40 is penetrated in the vehicle longitudinal direction to the base 22 (see FIG. 2). On the other hand, a base 32 that is rotatably attached (around the pin 40), an engagement groove 34 that is formed in a concave shape on one end side of the base 32 and is used for engagement with the striker 16, and a first pole 50 (see FIG. 2), an engaging convex portion 36 for engaging with (engaging with) the engaging concave portion 54, and the other end portion of the base portion 32 extending toward the vehicle front side. A spring locking piece 38. An engagement groove 34 for engagement with the striker 16 is formed, and the base portion 32 is attached to the base 22 so as to be rotatable and movable, so that it is provided on the radiator support upper 18 side (vehicle body side) shown in FIG. The latch 30 thus rotated rotates between a lock position 30X that engages with the striker 16 provided on the hood 14 side and holds the striker 16 and a non-lock position 30Y that does not engage with the striker 16 (see FIG. 5). It is possible.

  As shown in FIGS. 2 and 4, one end of a hop-up spring 42 as a first urging means is locked (connected) to the tip of the spring locking piece 38. The other end of the hop-up spring 42, which is a tension coil spring, is locked to a part of the base 22 shown in FIG. As a result, the hop-up spring 42 always urges the latch 30 in the direction of the non-lock position (in FIG. 2, the direction in which the pin 30 rotates clockwise about the pin 40) and the striker 16 via the latch 30. Can be biased toward the opening direction of the hood 14 (substantially above the vehicle).

  As shown in FIGS. 2 and 8, a first pole 50 is disposed on the side of the latch 30. The first pole 50 is plate-shaped and arm-shaped so that the vehicle front-rear direction is the plate thickness direction and is penetrated by the pin 44 in the vehicle front-rear direction to the base 22 (see FIG. 2) (around the pin 44). A base 52 that is rotatably mounted, an engagement recess 54 (see FIG. 3) that can be engaged (fitted) with the engagement projection 36 of the latch 30 and is used to hold the latch 30, and a base And a spring locking piece 56 extended toward the front side of the vehicle on the lower end side of 52. One end of a return spring 58 that is a tension coil spring is locked (connected) to the tip of the spring locking piece 56, and the other end of the return spring 58 is locked to a part of the base 22. As a result, the first pole 50 shown in FIG. 2 rotates in the direction of the first holding position 50X that holds the latch 30 at the lock position 30X (in FIG. 2, the counterclockwise direction around the pin 44). The latch 30 at the lock position 30X can be held.

  On the vehicle front side of the latch 30 and the first pole 50, an auxiliary lever 60 serving as a movement restricting means that is substantially L-shaped when viewed from the front of the vehicle is disposed. The auxiliary lever 60 is formed in a plate shape whose general surface is the thickness direction in the vehicle front-rear direction, and the pin 46 is penetrated in the vehicle front-rear direction so as to be rotatable relative to the base 22 (around the pin 46). A base 62 attached to the base 62, a lever 64 extending from the base 62 to one side (right side in the vehicle front view in the attached state) and having an upper end serving as an operating portion 64A, and the base 62 in an attached state And an auxiliary lock portion 66 that is provided on the vehicle upper side and is bent in a bowl shape. One end of the tension coil spring 68 is locked (connected) to the lower portion of the lever portion 64, and the other end of the tension coil spring 68 is locked to a part of the base 22. As a result, the auxiliary lever 60 is always biased in the direction of the limit position 60X that restricts the movement of the hood 14 in the opening direction (in FIG. 2, the direction of rotational movement about the pin 46 in the clockwise direction). Has been. Therefore, the auxiliary lever 60 restricts the movement of the hood 14 in the opening direction by the urging force of the tension coil spring 68 and the operating force applied to the lever portion 64 (substantially lifted upward). Between the position 60X and the release position 60Y (see FIG. 6) where the movement restriction in the opening direction of the hood 14 is released, the pin 46 can be rotated.

  As shown in FIG. 4, an urging mechanism portion 70 as a second urging means is disposed on the vehicle rear side of the latch 30. The urging mechanism unit 70 includes a hop-up lever 72 disposed so as to overlap the vehicle rear side of the latch 30, and a hop-up spring 94 connected to the hop-up lever 72 and configured by a tension coil spring. It is configured. The urging mechanism unit 70 described in detail later can urge the striker 16 shown in FIG. 2 in the opening direction of the hood 14 (substantially on the vehicle upper side), and opens the striker 16 together with the hop-up spring 42 to open the hood 14. It is possible to move from the hop-up position 70Y (see FIG. 5) moved in the direction to the direction against its urging force (the direction from the position shown in FIG. 5 toward the position shown in FIG. 6) and the hop. It can be held at the retracted position 70X (see FIG. 6) retracted from the up position 70Y (see FIG. 5). Hereinafter, details of the urging mechanism unit 70 and its related parts will be described.

  As shown in FIG. 4, the hop-up lever 72 has a plate-like shape, the vehicle front-rear direction is the plate thickness direction, and the pin 40 is penetrated in the vehicle front-rear direction to the base 22 (see FIG. 2). (For the pin 40) for engaging (fitting) a base 74 mounted so as to be rotatable and an engagement recess 86 formed in a second pole 82 (see FIG. 3) to be described later on one end of the base 32. An engaging convex portion 76, and a grooved engaging piece 80 as an engaged portion in which a deep groove portion 80A extending toward the vehicle rear side is formed on the other end portion side of the base portion 32. And a spring locking piece 78 extending further toward the vehicle rear side from the substantially U-shaped grooved engagement piece 80 in a side view of the vehicle. One end of the hop-up spring 94 is locked (connected) to the tip of the spring locking piece 78, and the other end of the hop-up spring 94 is engaged with a part of the base 22 as shown in FIG. 2. It has been stopped. As a result, the hop-up spring 94 always urges the hop-up lever 72 in a predetermined direction (in FIG. 2, a direction in which the hop-up lever 72 rotates in the clockwise direction around the pin 40) and strikes via the hop-up lever 72. 16 can be urged in the opening direction of the hood 14.

  As shown in FIG. 8, the second pole 82 is disposed on the side of the hop-up lever 72 so as to overlap the vehicle rear side of the first pole 50. The second pole 82 provided separately from the first pole 50 is formed in a plate shape, is formed in an arm shape so that the vehicle front-rear direction is the plate thickness direction, and is penetrated in the vehicle front-rear direction by the pins 44 to form a base. 22 (see FIG. 2), a base portion 84 that is rotatably mounted (around the pin 44), and an engagement convex portion 76 of the hop-up lever 72, and can be engaged (fitted) with the hop-up lever. An engagement recess 86 (see FIG. 3) for holding 72, and, as shown in FIG. 3, a spring locking piece 88 extending toward the vehicle rear side on the lower end side of the base 84, A cable mounting piece 90 used for mounting the hood opener cable 96 in the vicinity of the spring locking piece 88, and an interlock that protrudes from the lower end portion of the base portion 84 to the vehicle front side and can contact the lower end side surface of the first pole 50. Projection 92 as means , And a.

  One end of a return spring 98, which is a tension coil spring, is locked (connected) to the tip of the spring locking piece 88, and the other end of the return spring 98 is related to a part of the base 22 (see FIG. 2). It has been stopped. As a result, the second pole 82 is always urged in a predetermined direction (direction in which the second pole 82 rotates and moves in the same direction as the first pole 50), and as shown in FIG. 8, the urging mechanism at the retracted position 70X. The portion 70 can be held and rotated, and is urged in the direction of the second holding position 82X that holds the urging mechanism 70 at the retracted position 70X.

  Further, the other end side of the hood opener cable 96 to which one end side is attached to the cable attaching piece 90 is directly or indirectly connected to, for example, a hood open nanob provided in the vehicle interior, and the hood open nanob is connected via the hood open nanob. When the opener cable 96 is pulled, the second pole 82 rotates and moves against the urging force of the return spring 98. Here, the protruding portion 92 provided at the lower end of the second pole 82 is second only when the second pole 82 rotates and moves in the direction of retreating from the second holding position 82X by the tensile force of the hood opener cable 96. The first pole 50 is moved in the direction of retreating from the first holding position 50X in conjunction with the movement of the pole 82.

  As shown in FIG. 2, an interlocking mechanism portion 100 is provided on the lower side of the lever portion 64 of the auxiliary lever 60 as an interlocking portion that interlocks with a predetermined movement of the auxiliary lever 60. The interlock mechanism 100 includes a bell crank 104 disposed on the outer side of the hop-up lever 72 in the vehicle width direction, a first link 106 disposed so as to connect the bell crank 104 and the hop-up lever 72, and a bell crank. 104 and the second link 108 that connects the auxiliary lever 60 to each other. In the bell crank 104, a base 104A is attached to the base 22 so as to be rotatable about a pin 102 in the vehicle longitudinal direction, and a first arm 104B and a second arm 104C extend from the base 104A. The first link 106 has a base end portion rotatably coupled to the first arm portion 104B of the bell crank 104, and the intermediate portion 106B is in the groove portion 80A (see FIG. 4) of the hop-up lever 72, that is, a free section that is not interlocked. In plan view, the grooved engagement piece 80 of the hop-up lever 72 is movable and is moved from the hop-up position 70Y shown in FIG. 5 to the retracted position 70X shown in FIG. The tip engaging portion 106A (see FIG. 8) bent in an L shape is brought into contact with and can be engaged. In other words, the interlocking mechanism portion 100 is provided on the urging mechanism portion 70 side and the tip engaging portion 106A that is interlocked with the movement of the auxiliary lever 60 and engageable with the urging mechanism portion 70 side. A grooved engagement piece 80 as an engaged portion that can be engaged with the tip engagement portion 106A only in a state where the serial lever 60 moves from the restriction position 60X to the release position 60Y (see FIG. 6). I have. The second link 108 is rotatably coupled at one end side to the second arm portion 104C of the bell crank 104 and is rotatably coupled at the other end side to the distal end portion of the lever portion 64 of the auxiliary lever 60. .

  As a result, the interlock mechanism unit 100 moves when the auxiliary lever 60 moves from the restriction position 60X to the release position 60Y (see FIG. 6) in a state where the biasing mechanism part 70 shown in FIG. 5 is at the hop-up position 70Y. In conjunction with the movement of the auxiliary lever 60, the urging mechanism 70 is moved from the hop-up position 70Y to the retracted position 70X (see FIG. 6). That is, in the configuration in which the hop-up force that is provided independently on the latch side and acts when the hood is closed is divided into the hop-up force of the hop-up spring 42 and the hop-up force of the urging mechanism 70, the interlocking mechanism unit 100. Has a structure in which a part of the hop-up force (the hop-up force of the urging mechanism portion 70) is canceled when the lever portion 64 is operated.

(Action / Effect)
Next, the operation and effect of the above embodiment will be described.

  As shown in FIG. 2, the hood lock mechanism 20 is movable to the lock position 30X where the latch 30 holds the striker 16, and the engagement convex portion 36 of the latch 30 at the lock position 30X is the first pole. Since the latch 30 is held by engaging with the 50 engagement recesses 54, the engagement state between the latch 30 and the striker 16 is maintained.

  When the hood 14 is opened, when the user pulls the hood opener cable 96 through the hood open nanob (not shown), the second pole 82 rotates around the pin 44 against the urging force of the return spring 98 shown in FIG. (In the direction of arrow A). The protrusion 92 of the second pole 82 abuts on the lower end of the first pole 50 only when the second pole 82 moves in the retracting direction from the second holding position 82X that holds the biasing mechanism 70. The first pole 50 is rotated around the pin 44 (in the direction of arrow A) in the direction of retreating from the first holding position 50X where the latch 30 can be held in conjunction with the movement of the two poles 82. Therefore, in the releasing operation (see FIG. 5) for releasing the holding of the hop-up lever 72 (the biasing mechanism unit 70) by the second pole 82, the latch 30 is held by the first pole 50 and the hop-up by the second pole 82. Both the holding of the lever 72 (the biasing mechanism portion 70) can be easily released (interlocking).

  Here, the hop-up spring 42 can urge the latch 30 in the direction of the non-lock position 30Y (see FIG. 5) and can urge the striker 16 in the opening direction of the hood 14 (see FIG. 5) via the latch 30. In addition, since the urging mechanism unit 70 can urge the striker 16 in the opening direction of the hood 14, the engagement state between the latch 30 and the first pole 50, and the hop-up lever of the urging mechanism unit 70 are provided. When the engagement state between the second pole 82 and the second pole 82 is released, the latch 30 pulled by the hop-up spring 42 and the hop-up lever 72 pulled by the hop-up spring 94 rotate around the pin 40, and the hop Due to the resultant force of the urging force of the upspring 42 and the urging mechanism portion 70, the striker 16 and the hood 14 shown in FIG. It pushed up to 4 in the opening direction to move. At this time, the lower end portion 72A of the hop-up lever 72 moves from the position shown in FIG. 2 to the position shown in FIG. 5, but the intermediate portion 106B of the first link 106 is the groove portion 80A ( The bell crank 104 does not rotate because it slides inside (see FIG. 8).

  Next, in a state where the urging mechanism portion 70 is at the hop-up position 70Y, the lever portion 64 of the auxiliary lever 60 is pulled up by the user, and the auxiliary lever 60 rotates around the pin 46 (in the direction of arrow B). When moved, as shown in FIG. 6, the auxiliary lock portion 66 moves and the upper side of the lower rod portion 16 </ b> A of the striker 16 is opened, so that the striker 16 and the hood 14 are moved in the opening direction of the hood 14. It becomes possible to make it.

  Here, when the auxiliary lever 60 moves from the restricting position 60X to the releasing position 60Y shown in FIG. 6 with the urging mechanism 70 shown in FIG. 5 in the hop-up position 70Y, the auxiliary lever 60 Since the interlocking mechanism unit 100 moves the biasing mechanism unit 70 from the hop-up position 70Y (see FIG. 5) to the retracted position 70X in conjunction with the movement of the hood 14, the urging mechanism unit 70 is separately hopped up when the hood 14 is opened. Even if the position 70Y (see FIG. 5) is not moved to the retracted position 70X, the urging mechanism unit 70 moves to the retracted position 70X and is held as the auxiliary lever 60 moves. Accordingly, the hop-up lever 72 of the urging mechanism unit 70 first returns to the original position (retracted position 70X) in a state where the latch 30 is in the unlocked position 30Y.

  That is, the front end engaging portion 106A of the first link 106 of the interlocking mechanism portion 100 is interlocked with the movement of the auxiliary lever 60, and the auxiliary lever 60 is shown in FIG. 6 from the restriction position 60X shown in FIG. Since it can be engaged with the grooved engagement piece 80 on the urging mechanism portion 70 side only in the state of moving in the direction of the release position 60Y, the auxiliary lever 60 is moved to the limit position 60X (see FIG. 5) to the release position 60Y, the tip engagement portion 106A engages with the grooved engagement piece 80, so that the interlocking mechanism portion 100 is interlocked with the movement of the auxiliary lever 60. The urging mechanism 70 is moved from the hop-up position 70Y shown in FIG. 5 to the retracted position 70X shown in FIG. More specifically, due to the rotational movement of the auxiliary lever 60 shown in FIG. 5, the second link 108 is pulled, and the bell crank 104 rotates about the pin 102 (in the direction of arrow C), and the first link The link 106 is pulled toward the bell crank 104 side. As a result, the hop-up lever 72 rotates about the pin 40 (in the direction of arrow D) and returns to the retracted position 70X (the position where the second pole 82 is engaged), as shown in FIG.

  Further, as shown in FIG. 7, after the hood 14 is opened, when the auxiliary lever 60 is moved from the release position 60Y (see FIG. 6) toward the restriction position 60X and returned, the first link Since the intermediate portion 106B of 106 only slides in the groove portion 80A shown in FIG. 4 and the tip engaging portion 106A does not engage with the grooved engagement piece 80, as shown in FIG. 70 is held at the retracted position 70X without being interlocked with the movement of the auxiliary lever 60.

  On the other hand, when the user pushes the hood 14 closed by the hand and the hood 14 is moved from the upper side of the vehicle, the striker 16 pushes the auxiliary lock portion 66 of the auxiliary lever 60, whereby the auxiliary lever 60 is pinned. Rotate around 46 (counterclockwise in FIG. 7). At this time, the auxiliary lever 60 pulls the first link 106 to the bell crank 104 side via the second link 108 and the bell crank 104, but the intermediate portion 106B of the first link 106 is a groove portion shown in FIG. Since the tip engagement portion 106A does not engage with the grooved engagement piece 80 only by sliding in 80A, the hop-up lever 72 does not rotate. Next, the striker 16 rotates the latch 30 around the pin 40 (counterclockwise in FIG. 7), and is engaged by the engaging groove 34 of the latch 30 as shown in FIG. Return to. At this time, the urging force by the urging mechanism 70 does not act on the hood 14, and the pushing load from the upper side of the hood 14 required when the hood 14 is closed can be reduced.

  More specifically, in this embodiment, the hop-up force that urges the hood 14 in the opening direction is divided, and the urging force by the hop-up spring 42 via the latch 30 and the urging mechanism 70 are urged. By being divided into power, each urging force (one urging force by the hop-up spring 42 alone and one urging force by the urging mechanism 70 alone) is compared with the hop-up force required as a whole. Can be set small. Further, as described above, the urging mechanism unit 70 is movable in the direction against the urging force from the hop-up position 70Y shown in FIG. 5 and retracted from the hop-up position 70Y in FIG. Since the engaging convex portion 76 shown in FIG. 8 engages with the engaging concave portion 86 and can be held at the retracted position 70X shown in the figure, the hood 14 with the biasing mechanism portion 70 held at the retracted position 70X. When closing (see FIG. 7), as shown in FIG. 7, the urging force by the hop-up spring 42 acts on the hood 14 as a resistance force (push-up force), but the urging force by the urging mechanism unit 70 is the hood 14. Does not work. Therefore, the hood 14 does not move against the resultant force of the hop-up spring 42 and the urging force of the urging mechanism 70, but can be set smaller than the necessary hop-up force as a whole. It is moved against the urging force of only the hop-up spring 42 (reduction of the hood static closing force).

  Supplementally, the urging force by the hop-up spring is generally determined by the hood mass, the centroid position of the hood, the hinge center of the hood, etc., and a hop-up force greater than the rotational moment around the hinge due to the hood's own weight is required. Although the urging force cannot be lowered easily to reduce the static closing force, in this embodiment, before the hood is closed by dividing the hop-up force and closing the hood, when the hood is closed Hop-up power can be reduced.

  Further, even if the first pawl 50 shown in FIG. 9 moves in the retracting direction from the first holding position 50X, the second pawl 82 is not interlocked. Therefore, the hop-up lever 72 of the urging mechanism 70 at the retracting position 70X. Is held by the second pole 82, when the latch 30 is held by the first pole 50, the position of the second pole 82 already holding the hop-up lever 72 is not changed and only the first pole 50 is changed. Can be temporarily retracted from the first holding position 50X and then returned to the first holding position 50X to hold the latch 30 on the first pole 50. Thereby, before the latch 30 in the lock position 30X (see FIG. 2) is held by the first pole 50, the urging mechanism 70 can be held by the second pole 82 at the retracted position 70X.

  As described above, according to the hood lock mechanism 20 of the present embodiment shown in FIG. 2 and the like, the hop-up force at the time of unlocking is ensured by the resultant force of the hop-up spring 42 and the urging mechanism 70. However, when the hood 14 is closed, the urging force by the urging mechanism 70 is not a resistance force, so that the pushing load from above the hood 14 required when the hood 14 is closed can be reduced.

[Second Embodiment]
Next, a second embodiment of the hood lock structure will be described with reference to FIG. In the second embodiment, instead of the interlocking mechanism portion 100 (see FIG. 2) in the first embodiment, an interlocking portion 110 including a wire cable 112 and an exterior portion 114 is provided. The other components are substantially the same as those of the first embodiment, and therefore substantially the same components are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 10, the interlocking portion 110 includes a cylindrical exterior portion 114 that is disposed in an inverted L shape outside the hop-up lever 72 in the vehicle width direction and is fixed to the base 22, and an interior of the exterior portion 114. And a wire cable 112 disposed so as to connect the auxiliary lever 60 and the hop-up lever 72.

  In the wire cable 112, the distal end of the auxiliary lever 60 side is attached to the distal end of the lever portion 64, the intermediate portion 112B is movable in the exterior portion 114, and the groove portion 80A of the hop-up lever 72 (FIG. 4). The grooved engaging piece 80 of the hop-up lever 72 that is in a state of moving from the hop-up position 70Y (see FIG. 5) to the retracted position 70X (see FIG. 6). A front end engaging portion 112A bent in an L shape in a plan view or formed into a spherical shape or a cylindrical shape is brought into contact with and can be engaged. When the shape of the tip engaging portion 112A is spherical, the diameter of the spherical portion is larger than the diameter of the intermediate portion 112B, and when the shape of the tip engaging portion 112A is cylindrical, For example, you may shape | mold so that the front-end | tip part of the wire cable 112 may become T shape by planar view. The relationship between the tip engagement portion 112A and the grooved engagement piece 80 is the same as the relationship between the tip engagement portion 106A (see FIG. 4 and the like) and the grooved engagement piece 80 in the first embodiment. In other words, the interlocking portion 110 is provided on the urging mechanism portion 70 side and the tip engagement portion 112A that is interlocked with the movement of the auxiliary lever 60 and can be engaged with the urging mechanism portion 70 side. A grooved engagement piece as an engaged portion that can be engaged with the tip engagement portion 106A only when the dovetail lever 60 moves from the restriction position 60X (see FIG. 5) to the release position 60Y (see FIG. 6). 80. With such a configuration, substantially the same operations and effects as in the first embodiment can be obtained.

[Supplementary explanation of the embodiment]
In the above embodiment, the biasing mechanism 70 is moved from the hop-up position 70Y (see FIG. 5) to the retracted position 70X (see FIG. 6) in conjunction with the movement of the auxiliary lever 60. 2 A hood provided with a separate mechanism for moving the urging means from the hop-up position to the retracted position (for example, a mechanism for providing a dedicated lever or button for moving the retracted position and moving to the retracted position by a link). You may operate the said mechanism at the time of opening.

  In the above embodiment, the first pole 50 is configured to be able to hold the latch 30 at the lock position 30X. However, the holding member is urged toward the lock member, for example, and can be moved in and out. It may be another holding member such as an engagement member that can hold the lock member in the lock position by engagement.

  Further, in the above-described embodiment, when the auxiliary lever 60 moves from the restriction position 60X to the release position 60Y with the urging mechanism 70 in the hop-up position 70Y, the movement of the auxiliary lever 60 is interlocked. The interlocking mechanism part 100 and the interlocking part 110 are provided as interlocking parts for moving the urging mechanism part 70 from the hop-up position 70Y to the retracted position 70X, but the interlocking part is, for example, the auxiliary lever 60 ( The tip of the lever portion 64 in the movement restricting means) and the lower end portion 72A of the hop-up lever 72 in the urging mechanism portion 70 (second urging means) are connected and the distance between the two reaches a constant. It is good also as an interlocking part comprised by other means, such as a string-like body which generates tension only when it does.

1 is a perspective view showing a vehicle front portion to which a hood lock structure according to a first embodiment of the present invention is applied. It is a front view which shows the hood lock structure which concerns on the 1st Embodiment of this invention in a hood lock state. It is a perspective view which shows the 1st pole in the 1st Embodiment of this invention, a 2nd pole, etc. FIG. It is a perspective view which shows the latch, hop-up lever, etc. in the 1st Embodiment of this invention. It is a front view which shows the food lock structure which concerns on the 1st Embodiment of this invention in the hop-up state. FIG. 6 is a front view showing a state where the auxiliary lever is pulled up from the state of FIG. 5. It is a front view shown in the state which returned the auxiliary lever from the state of FIG. It is a perspective view which shows the principal part in the state of FIG. It is a perspective view which shows the state just before the latch in the 1st Embodiment of this invention is engaged with a 1st pole. It is a front view which shows the hood lock structure which concerns on the 2nd Embodiment of this invention in a hood lock state.

Explanation of symbols

14 Hood 16 Strike 18 Radiator support upper (body)
30 Latch (locking member)
30X Lock position 30Y Non-lock position 42 Hop-up spring (first biasing means)
50 1st pole (holding member)
50X first holding position 60 auxiliary lever (movement limiting means)
60X restriction position 60Y release position 70 biasing mechanism (second biasing means)
70X retracted position 70Y hop-up position 80 grooved engagement piece (engaged part)
82 Second pole 82X Second holding position 92 Projection (interlocking means)
100 Interlocking mechanism part (interlocking part)
106A Tip engagement portion (engagement portion)
110 Interlocking part 112A Tip engagement part (engagement part)

Claims (4)

A lock member that is provided on the vehicle body side and is movable between a lock position that engages with a striker provided on the hood side and holds the striker and a non-lock position that does not engage with the striker;
A holding member capable of holding the lock member in the lock position;
A first biasing means connected to the lock member, biasing the lock member in the direction of the non-lock position, and biasing the striker in the opening direction of the hood via the lock member;
The striker can be urged in the opening direction of the hood, and from the hop-up position where the striker is moved in the opening direction of the hood together with the first urging means, in a direction against its urging force. Second urging means that is movable and can be held in the retracted position retracted from the hop-up position;
The food lock structure characterized by having. The holding member is a first pole that is rotationally movable and is biased toward the first holding position that holds the lock member in the lock position;
The second pole is provided separately from the first pole, can hold the second biasing means in the retracted position, and is capable of rotating and holding the second biasing means in the retracted position. A second pole biased in the direction of two holding positions;
Only when the second pole moves in a direction to retract from the second holding position, the first pole is moved in the direction to retract from the first holding position by interlocking the first pole with the movement of the second pole. Interlocking means to move,
The hood lock structure according to claim 1, comprising: A movement restricting means movable between a restriction position for restricting movement of the hood in the opening direction and a release position for releasing movement restriction of the hood in the opening direction;
When the movement restricting means moves from the restricted position to the release position while the second urging means is in the hop-up position, the second urging means is moved in conjunction with the movement of the movement restricting means. An interlocking unit that moves from the hop-up position to the retreat position;
The hood lock structure according to claim 1, wherein the hood lock structure is provided.   The interlocking portion is provided on the second urging means side, an engaging portion that is interlocked with the movement of the movement restricting means and engageable with the second urging means side, and the movement restricting means is provided with the restriction. The hood lock structure according to claim 3, further comprising: an engaged portion that can be engaged with the engaging portion only in a state of moving from a position toward the release position.

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