JP7435240B2 - Vehicle hood lock system - Google Patents

Description

The present invention relates to a vehicle hood lock system including a hood lock device for holding a vehicle hood in a closed position.

Conventionally, vehicle hood lock systems include a hood lock device that is placed on the vehicle body and holds the hood in a closed position by engaging a striker on the hood side, and a hood lock device that is placed near the driver's seat and has a bowden cable. The opener device is connected to the hood lock device via an operating force transmission member such as the like, and releases the hood lock device based on a user's manual operation, thereby making it possible to open the hood.

For example, in the hood lock system described in Patent Document 1, a hood lock device includes a latch that can engage with a striker on the hood side, and a ratchet that prevents rotation of the latch in the opening direction by engaging with the latch. Be prepared.

The latch of the hood locking device has a first groove for holding the hood in a fully closed position and a second groove for holding the hood in a slightly opened position from the fully closed position by engaging the striker. from the latch position (corresponding to the fully closed position of the hood) where the striker engages with the first groove to the half latch position (corresponding to the half open position of the hood) where the striker engages with the second groove. The striker is rotatable from the second groove to the unlatched position (corresponding to a position where the hood is further opened than the half-open position), and vice versa.

When the latch is in the latched position, the ratchet holds the latch in the latched position by engaging with a first pawl provided on the outer periphery of the latch, and when the latch is in the half-latched position, the ratchet The latch is held in the half-latched position by engaging with the second pawl provided on the outer periphery, and is configured not to engage with either the first or second pawl when the latch is in the unlatched position. .

To open the hood in the fully closed position from inside the vehicle, the user first operates the opener handle of the opener device located near the driver's seat from the standby position in a predetermined direction. As a result, the ratchet releases and separates from the first pawl of the latch, rotating the latch from the latch position to the half-latch position, lifting the hood from the fully closed position to the half open position, and the ratchet , engages with the second claw portion of the latch. Next, after returning the opener handle to the standby position, operate it again in the same direction as the previous operation. As a result, the ratchet is released again and disengaged from the second pawl portion of the latch, thereby rotating the latch from the half-latched position to the unlatched position, allowing the striker to disengage from the second groove portion. Next, the user can open the hood by moving to the front of the vehicle, inserting his/her hand into the gap between the half-opened hood and the vehicle body, and then lifting the hood.

German Patent Application No. 10 2010 062 700

However, in the hood lock system described in Patent Document 1, the hood can be opened from the fully closed position to the half open position by operating the opener handle from the standby position in a predetermined direction in the first operation, and then the hood can be opened from the fully closed position to the half open position. This operation method allows the user to move the hood from the half-open position to the open direction by returning the opener handle to the standby position in the second operation and then operating it again in the same direction as the previous time. If the operator misunderstands that the handle has been operated twice even though the user has only operated it once, or if the amount of operation of the opener handle is insufficient for the second time, the user may have moved to the front side of the hood. However, there is a possibility that the problem of not being able to open the hood may occur.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a vehicle hood lock system that allows the hood to be opened reliably based on the operation of an opener device.

According to the present invention, the above problem is solved as follows.
In the vehicle hood lock system according to the present invention, the hood-side striker, which is fixed to the vehicle body and pivotally supported to the vehicle body so as to be openable and closable, enters with the closing operation of the hood and with the opening operation. a base plate having an exiting striker entry groove; a primary latch mechanism supported by the base plate and capable of holding the hood in a fully closed position by engaging with the striker entered into the striker entry groove; When the hood is supported and is in a half-open position that is slightly more open than a fully closed position, the hood moves from a standby position where it can engage with the striker that is disengaged from the primary latch mechanism section to a retracted position where it cannot engage with the striker. a hood locking device including a secondary latch which is capable of moving and is elastically held in each position by a biasing means; an opener handle that displaces the primary latch mechanism section to an unlatched state via a first operation force transmission member by moving from a standby position to a first operating position by a predetermined stroke in one direction; When the opener handle moves in the one direction against the biasing force of the second spring to the second operating position passing through the first operating position, the opener handle moves in the predetermined direction against the biasing force of the second spring. an opener device including an interlocking lever that displaces the secondary latch from the standby position to the retracted position via a second operating force transmission member by moving in one direction from the second standby position. do.

Preferably, when moving the opener handle of the opener device from the first operating position to the second operating position, the handle is moved against a biasing force obtained by adding a biasing force of the first spring to a biasing force of the second spring. The operating force required to do so is as follows.

Preferably, the opener device further includes a base plate fixed near the driver's seat, and the opener handle and the interlocking lever are coaxially supported on the base plate so as to be independently rotatable. do.

Preferably, one end of the biasing means of the hood lock device is latched to the secondary latch and the other end is latched to the base plate, so that the biasing means of the hood lock device can be moved between the standby position and the retracted position of the secondary latch. The turnover spring is configured such that the biasing direction of the biasing force applied to the secondary latch is reversed at an intermediate position between the two.

Preferably, the secondary latch has an abutment portion that enters the striker entry groove when the secondary latch is in the retracted position, and when the striker comes into contact with the abutment portion due to a closing operation of the hood, the It shall be forcibly moved from the retracted position to the standby position against the urging force of the urging means.

Preferably, the secondary latch is prevented from moving from the standby position to the retracted position by abutting the striker when the striker is engaged with the primary latch mechanism.

According to the present invention, the primary latch mechanism of the hood lock device is displaced to the unlatched state by operating the opener handle in one direction at the first stage, and subsequently, by operating the opener handle at the second stage in one direction. Since the secondary latch can be moved to the retracted position, the hood can be opened easily and reliably.

1 is a front perspective view of an automobile equipped with a vehicle hood lock system according to the present invention; FIG. FIG. 3 is a perspective view of the hood lock device as seen from the diagonally front left side. FIG. 3 is an exploded perspective view of the hood lock device from the front left side. FIG. 3 is a front view of the hood lock device. FIG. 3 is a rear view of the hood lock device. FIG. 6 is an enlarged front view of main parts when the primary latch mechanism is in the latched state and the secondary latch is in the standby position. FIG. 6 is an enlarged front view of the main parts of the primary latch mechanism when the ratchet is in the release position and the secondary latch is in the standby position. FIG. 6 is an enlarged front view of main parts when the primary latch mechanism is in an unlatched state and the secondary latch is in a standby position. FIG. 7 is an enlarged front view when the primary latch mechanism is in an unlatched state and the secondary latch is in a retracted position. FIG. 3 is a side view of the opener device in a non-operating state. FIG. 6 is a side view of the opener device during a primary latch release operation. FIG. 6 is a side view of the opener device during a secondary latch release operation.

Hereinafter, one embodiment of the present invention will be described based on the drawings.
As shown in FIG. 1, the vehicle hood lock system according to the present invention includes a hood lock device 1 that is attached to a radiator core support (hereinafter referred to as "vehicle body") in the engine compartment of the front part of a vehicle V such as an automobile. , and a manual opener device 20 disposed near the driver's seat.

The hood lock device 1 is a primary latch that can hold the hood H in a fully closed position by engaging a striker S provided at the front of the hood H, whose rear part is pivotally supported on the vehicle body so that it can be opened and closed in the vertical direction. It includes a mechanism part 2 and a secondary latch mechanism part 3 that can be held in a partially open position slightly opened upward from a fully closed position.

As shown in FIGS. 10 to 12, the opener device 20 has an opener handle 21 that can be manually operated. Based on the operation to move the opener handle 21 to the first operation position B (see FIG. 11), the primary latch mechanism 2 is unlatched and the hood H is placed in the half-open position. Based on the operation of moving from the first operation position B to the second operation position C (see FIG. 12), the secondary latch 13 of the secondary mechanism section 3 is released and moved to the retracted position where it cannot engage with the striker S. By holding it, the hood H can be opened. Note that a detailed explanation of the opener device 20 will be described later.

As shown in FIGS. 2 to 5, the hood lock device 1 includes, in addition to the above-described primary latch mechanism section 2 and secondary latch mechanism section 3, a metal base plate for supporting the primary latch mechanism section 2 and the secondary mechanism section 3. 4. The base plate 4 is fixed to the vehicle body by bolts (not shown), and has left and right screw holes 41, 41 on both the left and right sides into which bolts are screwed, and a striker in the upper center of the vehicle as the hood H is opened and closed. It has a striker entry groove 42 that is open at the top so that S can advance and retreat in the vertical direction.

The primary latch mechanism section 2 includes a primary latch 6 and a lift lever 7 that are rotatably supported by a latch shaft 5 that faces the rear side of the base plate 4 in the front-rear direction, and a ratchet shaft 8 that faces the rear side of the base plate 4 in the front-rear direction. A ratchet 9 that is rotatably supported, a lift spring 10 that applies a biasing force to the lift lever 7 in the lift direction (clockwise in FIG. 4, counterclockwise in FIG. 5), and a lift spring 10 that is engaged with the ratchet 9. It includes a ratchet spring 11 that applies a biasing force in the mating direction (counterclockwise in FIG. 4, clockwise in FIG. 5).

The primary latch 6 has a substantially central portion supported by the latch shaft 5 on the rear side of the base plate 4, and is rotatable from the latched position shown in FIGS. 6 and 7 to the unlatched position shown in FIGS. 8 and 9, and vice versa. When the hood H is closed, the striker S that enters the striker entry groove 42 engages with the engagement groove 61, so that the striker S moves approximately 45 degrees from the unlatched position shown in FIGS. 8 and 9 in the latching direction (counterclockwise in FIGS. 8 and 9). Rotate and move to the latched position shown in FIG. Note that the engagement groove 61 is formed between an upper arm portion 62 and a lower arm portion 63 provided on the primary latch 6.

The ratchet 9 is supported on the rear side of the base plate 4 by a ratchet shaft 8 whose upper end faces in the front-rear direction, and is urged in the engagement direction (for example, counterclockwise in FIG. 6) by a ratchet spring 11. When the hood H is in the fully closed position, the striker S is engaged with the engagement groove 61 of the primary latch 6, and the primary latch 6 is in the latched position shown in FIG. 6, the ratchet 9 is in the position shown in FIG. When the primary latch 6 is in the engaged position, the step-like claw part 91 provided at the center engages with the engaging part 64 provided at the tip of the lower arm part 63 of the primary latch 6, thereby moving the primary latch 6 to the latched position. to hold.

In this embodiment, as shown in FIG. 6, the striker S is engaged with the engagement groove 61 of the primary latch 6, the primary latch 6 is in the latched position, and the ratchet 9 is engaged with the primary latch 6. The state in which the striker S is disengaged from the engagement groove 61 of the primary latch 6 and the primary latch 6 is in the unlatched position is defined as the latched state, as shown in FIGS. 8 and 9. Defined as unlatched state.

Further, the ratchet 9 has a connecting portion 92 formed at its lower end, and the connecting portion 92 is connected to a first lever 22 of the opener device 20, which will be described later, via a first operating force transmitting member 15 constituted by a Bowden cable. Ru. When the hood H is in the fully closed position, when the opener handle 21 of the opener device 20 is first operated in one direction (for example, pulling backward), the operation is transmitted via the first operation force transmission member 15. The signal is transmitted to the ratchet 9. As a result, the ratchet 9 rotates by a predetermined angle clockwise from the engagement position shown in FIG. 6 against the biasing force of the ratchet spring 11 and moves to the release position D shown in FIGS. 91 is disengaged from the engaging portion 64 of the primary latch 6, allowing the primary latch 6 to freely rotate in the unlatching direction (clockwise in FIGS. 6 and 7). Furthermore, when the opener handle 21 is operated a second time in one direction, the operation is transmitted to the ratchet 9 via the first operation force transmission member 15. The ratchet 9 moves from the release position to the overtravel position E shown in FIG. 9 against the urging force of the ratchet spring 11.

When the primary latch 6 becomes free to rotate in the unlatching direction, the biasing force of the lift spring 10 acting on the lift lever 7 causes the primary latch 6 to rotate in the unlatching direction from the latch position shown in FIG. 7 and move to the unlatching position shown in FIG. Then, the striker S engaged with the engagement groove 61 is lifted upward. Thereby, the hood H is lifted from the fully closed position to the half open position. When the hood H is in the half-open position, it is possible to insert a hand into the gap between the front end of the hood H and the vehicle body.

The lift lever 7 has a substantially central portion supported by the latch shaft 5 on the rear side of the base plate 4, is biased in the lift direction (counterclockwise in FIG. 6) by the biasing force of the lift spring 10, and is supported by the primary latch 6. It is connected with a slight play in the rotational direction. The biasing force of the lift spring 10 is transmitted to the hood H via the lift lever 7 and the striker S, and acts as a lifting force that lifts the hood H from the fully closed position to the half open position, and also unlatches the primary latch 6 from the latched position. It also acts as a force to rotate it into position.

As can be understood from FIGS. 6 to 9, the slight play in the rotational direction of the lift lever 7 with respect to the primary latch 6 described above is caused by the protrusion 63a provided on the lower arm portion 63 of the primary latch 6 so as to protrude rearward. This is achieved by engaging an engagement hole 71 provided in the lift lever 7 with some play in the rotational direction.

The lift lever 7 is provided with a lift arm portion 72 that overlaps the rear side of the lower arm portion 63 of the primary latch 6 and that can slightly enter the engagement groove 61 of the primary latch 6 from below. When the hood H is in the fully closed position and the primary latch 6 is held in the latched position as shown in FIG. By strongly pressing the striker S engaged with the engagement groove 61 against the upper edge of the engagement groove 61 in the primary latch 6, that is, the upper arm portion 62, the striker S is prevented from wobbling within the engagement groove 61. , which in turn suppresses the rattling of the hood H.

Next, the secondary latch mechanism section 3 will be explained. The secondary latch mechanism 3 includes a secondary latch 13 that is rotatably supported at a predetermined angle by a secondary latch shaft 12 facing in the front-rear direction on the front side of the base plate 4, and a predetermined position of the secondary latch 13 by rotation of the secondary latch 13. As a boundary, a turnover spring 14 is included as a biasing means that reverses the biasing direction of the biasing force in the rotational direction that is applied to the secondary latch 13.

As described above, the lower end of the secondary latch 13 is supported by the secondary latch shaft 12 on the front side of the base plate 4 so as to be rotatable by a predetermined angle in the left and right direction, and the connecting portion 131 provided on the upper side is supported by the second operating force. By being connected to one end of the transmission member 16, it is connected to a later-described interlocking lever 22 of the opener device 20 via the second operating force transmission member 16. As a result, when the hood H is in the half-open position, when the opener handle 21 of the opener device 20 is operated for a second time in one direction, the secondary latch 13 is moved so that the lower end 136 is attached to the base plate 4 based on the operation of the opener handle 21. From the standby position shown in FIG. 8 in which it abuts against the first stopper portion 43 (see FIG. 4) of By rotating to the retracted position where the base plate 4 contacts the second stopper portion 44, the base plate 4 is held at the retracted position by the biasing force of the turnover spring 14.

The turnover spring 14 is constituted by a torsion spring, and one arm portion 14a is hooked to the secondary latch 13, and the other arm portion 14b is hooked to the base plate 4, so that when the secondary latch 13 rotates, At an intermediate position between the standby position and the retracted position of the secondary latch 13, the urging direction of the urging force acting on the secondary latch 13 in the rotational direction is reversed. Specifically, when the secondary latch 13 is closer to the standby position than the intermediate position, a biasing force is applied to the secondary latch 13 in the standby direction (clockwise in FIGS. 6 to 8), and 13 is closer to the retracted position than the intermediate position, a biasing force is applied to the secondary latch 13 in the retracting direction (counterclockwise in FIG. 9).

Further, the secondary latch 13 includes an arm portion 132 extending upward along the striker entry groove 42 , a hook portion 133 provided at the upper end of the arm portion 132 , and a hook portion 133 provided on both sides of the striker entry groove 42 . It has a first abutting part 134 that faces the first abutting part 134, and a second abutting part 135 that extends diagonally upward to the right from the upper end of the first abutting part 134.

As shown in FIGS. 6 to 8, when the secondary latch 13 is held at the standby position, the hook portion 133 is located within the striker movement locus of the striker S accompanying the opening and closing of the hood H, and the hook portion 133 By engaging the striker S that has come out of the engagement groove 61 from above, the hood H is held in the half-open position, and the secondary latch 13 is held in the retracted position as shown in FIG. In such a case, the hood H is retracted outside the striker movement restriction and the hood H can be opened and closed freely at a position where it does not engage with the striker S.

When the hood H is in the fully closed position, the striker S is engaged with the engagement groove 61 of the primary latch 6, and the secondary latch 13 is in the standby position, the first contact portion 134 is in the position shown in FIG. It is located close to the side surface of the striker S and in a position where it can come into contact with the side surface of the striker S. As a result, when the primary latch 6 is in the latched position, even if the secondary latch 13 is rotated from the standby position in the retracting direction (counterclockwise in FIG. 6), the first contact part 134 It comes into contact with the side surface and prevents the secondary latch 13 from moving from the standby position to the retracted position. Therefore, in the latched state in which the striker S is engaged with the engagement groove 61 of the primary latch 6, the secondary latch 13 cannot be moved from the standby position to the retracted position. Thereby, malfunction of the secondary latch 13 can be prevented.

For example, as shown in FIG. 6, when the secondary latch 13 is held at the standby position, the second contact portion 135 is located on the right side of the striker entry groove 42, and as shown in FIG. When the striker 13 is held at the retracted position, it enters the striker entry groove 42. As a result, when the secondary latch 13 is held in the retracted position by the biasing force of the turnover spring 14, the striker S, which has entered the striker entry groove 42 from above, is tilted as the hood H closes. By coming into contact with the upper surface of a certain second contact portion 135, the secondary latch 13 can be forcibly moved from the retracted position to the standby position against the biasing force of the turnover spring 14.

Next, the opener device 20 will be explained.
The opener device 20 includes a base plate 23 fixed near the driver's seat, an opener handle 21 and an interlocking lever 22 supported by a pivot shaft 24 facing left and right on the base plate 23 so as to be independently rotatable at a predetermined angle, and the opener handle 21 In FIGS. 10 to 12, a first spring 25 applies a clockwise biasing force, and a second spring 26 applies a clockwise biasing force to the interlocking lever 22.

The opener handle 21 is supported by a pivot shaft 24 on the side surface of the base plate 23 so as to be rotatable by a predetermined angle counterclockwise (one direction) from a predetermined first standby position A1 shown in FIG. The other end of the first operating force transmitting member 15 capable of transmitting the rotational movement of the opener handle 21 to the ratchet 9 is connected to the connecting portion 21a provided diagonally above the front.

Further, the end of the first spring 25 is hooked to the hook 21b provided at the lower end of the opener handle 21, so that a clockwise biasing force is applied by the first spring 25 to the upper end. The provided contact portion 21d contacts the stopper portion 23a of the base plate 23 via the contact portion 22b of the interlocking lever 22, which will be described later, so that the interlocking lever 22 is held at the first standby position A1.

Further, the opener handle 21 is moved counterclockwise from the first standby position A1 by a first operation stroke based on the first operation of the first stage of the force resisting the biasing force of the first spring 25 by the user's manual operation. By rotating to the first operating position B shown in FIG. from the position to the release position D. Further, the opener handle 21 is operated in the first stage based on a second operation of a force resisting the urging force obtained by adding the urging force of the first spring 25 and the urging force of the second spring 26 by the user's manual operation. It is possible to rotate through the operating position B to the second operating position C shown in FIG. 12.

The first operation of moving the opener handle 21 from the standby position A1 to the first operating position B requires a force that resists the biasing force of the first spring 25, and moves the opener handle 21 from the first operating position B to the second operating position. The second operation of moving to C requires a force that resists the biasing force of the first spring 25 plus the biasing force of the second spring 26 .

The interlocking lever 22 is supported on the side surface of the base plate 23 by a pivot 24 independently of the opener handle 21 so as to be rotatable by a predetermined angle counterclockwise (one direction) from a predetermined second standby position A2 shown in FIGS. 10 and 11. At the same time, the other end of the second operating force transmitting member 16 capable of transmitting the rotational movement of the interlocking lever 22 to the secondary latch 13 is connected to the connecting portion 22a provided at the upper part.

Further, the interlocking lever 22 is held at the second standby position A2 by the contact portion 22b provided at the upper end portion contacting the stopper portion 23a of the base plate 23 due to the biasing force of the second spring 26. Further, in the interlocking lever 22, when the opener handle 21 rotates from the first operation position B to the second operation position C, the abutting arm portion 21c of the opener handle 21 abuts the abutted arm portion 22c of the interlocking lever 22. As a result, it rotates counterclockwise from the second standby position A2 in conjunction with the rotation of the opener handle 21 against the biasing force of the second spring 26. As a result, the rotational movement of the interlocking lever 22 is transmitted to the secondary latch 13 via the second operating force transmission member 15, and the secondary latch 13 moves from the standby position to the retracted position.

Note that the opener device 20 is not limited to the above-described configuration, and various changes are possible. For example, when the door of the driver's seat is closed, the opener handle 21 cannot be operated counterclockwise from the first standby position A1, and can only be operated when the door is open. In this way, erroneous operation of the opener handle 21 can be prevented while the vehicle is running.

Next, the operation of the vehicle hood lock system according to this embodiment will be explained with reference to FIGS. 6 to 12.
When the hood H is in the fully closed position, as shown in FIG. , the striker S is engaged with the engagement groove 61 of the primary latch 6. In this case, the striker S is designed to prevent rattling between the lift arm portion 72 of the lift lever 7 and the upper arm portion 62 of the primary latch 6 due to the biasing force of the lift spring 10 acting on the lift lever 7. is sandwiched between. The secondary latch 13 is elastically held in the standby position by the biasing force of the turnover spring 14. Further, the opener handle 21 of the opener device 20 is elastically held at a first standby position A1, and the interlocking lever 22 is elastically held at a second standby position A2.

Furthermore, when the hood H is in the fully closed position, as shown in FIG. is prevented from rotating from the standby position in the retracting direction. Therefore, in this state, the secondary latch 13 cannot be moved to the retracted position unless the primary latch mechanism section 2 is displaced to the unlatched state.

When the hood H is in the fully closed position, the opener handle 21 is moved counterclockwise based on the first operation of the first stage of the opener handle 21 in the opener device 20, that is, the operation that resists the biasing force of the first spring 25. When the open handle 21 is rotated to the first operation position B as shown in FIG. 11, the rotational movement is transmitted to the ratchet 9 via the first operation force transmission member 15. As a result, the ratchet 9 rotates from the engagement position shown in FIG. 6 in the release direction (clockwise in FIG. 6) about the ratchet shaft 8, and as shown in FIG. It rotates to the release position D where it is removed from the engagement part 64. As a result, the primary latch 6 rotates from the latch position shown in FIG. 7 to the unlatch position shown in FIG. 8 due to the biasing force of the lift spring 10 acting on the lift lever 7, and this rotation raises the striker S. Lift hood H to the half-open position. As shown in FIG. 8, the raised striker S can engage with the hook portion 133 of the secondary latch 3 from below, so that the hood H is held in the half-open position.

Subsequently, based on the second operation of the second stage of the opener handle 21 in the opener device 20, that is, the operation of a force that resists the urging force obtained by adding the urging force of the first spring 25 and the urging force of the second spring 26, The opener handle 21 is further operated counterclockwise to rotate it toward the second operating position C shown in FIG. In this case, when switching from the first operation of the first stage of the opener handle 21 to the second operation of the second stage, the biasing force of the second spring 26 is added to the biasing force of the first spring 25 in response to the operation of the opener handle 21. Since the applied repulsive force acts and the operation of the opener handle 21 suddenly becomes heavy, it can be reliably confirmed that the primary latch mechanism part 2 is displaced to the unlatched state and the secondary latch 13 is released.

When the opener handle 21 rotates toward the second operating position C, as shown in FIG. 22 also rotates counterclockwise from the second standby position A2. Thereby, the rotation of the interlocking lever 22 is transmitted to the secondary latch 13 via the second operating force transmission member 16. As a result, the secondary latch 13 rotates from the standby position shown in FIG. 8 to the retracted position shown in FIG. 9, and is elastically held in the retracted position by the biasing force of the turnover spring 14. Note that the ratchet 9 rotates to the overtravel position E shown in FIG. 9 as the opener handle 21 rotates to the second operating position C.

After that, the user simply returns the opener handle 21 to the first standby position A1, moves to the front side of the hood H, and inserts his hand into the gap between the front end of the hood H and the radiator grille to open the hood H. You can open it as is.

When the hood H is open, as shown in FIG. 9, the primary latch 6 is stopped at the unlatched position, and the secondary latch 13 is stopped at the retracted position. When the hood H is closed in this state, the striker S enters the striker entry groove 42, passes through the side of the hook portion 133 in the secondary latch 13, and engages with the engagement groove 61 of the primary latch 6. It abuts against the second abutting portion 135 of the secondary latch 13 . As a result, the secondary latch 3 is rotated from the retracted position shown in FIG. 9 to the standby position shown in FIG. 6 against the biasing force of the turnover spring 14, and is elastically held. Further, the primary latch 6 rotates from the unlatched position shown in FIG. 9 to the latched position shown in FIG. , engages with the engaging portion 64 of the primary latch 6. As a result, the primary latch mechanism 2 enters the latched state shown in FIG. 6, and the hood H is held in the fully closed position.

As described above, in this embodiment, the primary latch mechanism section 2 of the hood lock device 1 is unlatched by the first operation of the first stage of the opener handle 21 in one direction that resists the biasing force of the first spring 25. Further, following the first operation, the second stage of the opener handle 21 is moved in one direction against the biasing force obtained by adding the biasing force of the first spring 25 to the biasing force of the second spring 26. Since the secondary latch 13 can be moved to the retracted position by two operations, the hood H can be reliably opened.

In addition, in the second operation of the second stage of the opener handle 21 to move the secondary latch 13 to the retracted position, when the secondary latch 13 moves closer to the retracted position than the intermediate position between the standby position and the retracted position. Since the secondary latch 13 is moved to the retracted position by the biasing force of the turnover spring 14, even if the amount of operation of the second stage of the opener handle 21 is insufficient, the secondary latch 13 can be reliably moved to the retracted position. . Thereby, the hood H can be reliably opened from outside the vehicle based on the user's operation of the opener handle 21 in the opener device 20.

1 Hood lock device 2 Primary latch mechanism section 3 Secondary latch mechanism section 4 Base plate 41 Screw hole 42 Striker entry groove 43 First stopper section 44 Second stopper section 5 Latch shaft 6 Primary latch 61 Engagement groove 62 Upper arm section 63 Lower Arm portion 63a Projection 64 Engagement portion 7 Lift lever 71 Engagement hole 72 Lift arm portion 8 Ratchet shaft 9 Ratchet 91 Claw portion 92 Connection portion 10 Lift spring 11 Ratchet spring 12 Secondary latch shaft 13 Secondary latch 131 Connection portion 132 Arm portion 133 Hook portion 134 First contact portion 135 Second contact portion 136 Lower end portion 14 Turnover spring (biasing means) 14a One arm portion 14b Other arm portion 15 First operating force transmission member 16 Second operating force transmission Members 20 Opener device 21 Opener handle 21a Connecting portion 21b Latching portion 21c Contact arm portion 21d Contact portion 22 Interlocking lever 22a Connecting portion 22b Contact portion 22c Contacted arm portion 23 Base plate 23a Stopper portion 24 Pivot 25 First spring 26 Second spring H Hood S Striker V Vehicle

Claims (6)

a base plate fixed to the vehicle body and having a striker entry groove in which a hood-side striker, which is pivotably supported on the vehicle body so as to be openable and closable, enters when the hood is closed and exits when the hood is opened;
a primary latch mechanism supported by the base plate and capable of holding the hood in a fully closed position by engaging with the striker that has entered the striker entry groove; is in a slightly open half-open position, the primary latch mechanism is movable from a standby position where it can engage the striker that has come off the primary latch mechanism, to a retracted position where it cannot engage the striker; a hood locking device including a secondary latch resiliently held in position;
The first operating force is transmitted by being placed near the driver's seat and moving from a predetermined first standby position to a first operating position by a predetermined stroke in one direction against the biasing force of a first spring. an opener handle that displaces the primary latch mechanism section to an unlatched state via a member; and a second operating position where the opener handle passes through the first operating position in the one direction against the biasing force of the first spring. , the secondary latch is moved in one direction from the predetermined second standby position along with the movement of the opener handle against the biasing force of the second spring, and thereby the secondary latch is moved through the second operating force transmission member. a hood lock system for a vehicle, comprising: an opener device including an interlocking lever for displacing the hood from the standby position to the retracted position. When moving the opener handle of the opener device from the first operating position to the second operating position, an operating force that resists a biasing force obtained by adding the biasing force of the first spring to the biasing force of the second spring. The vehicle hood lock system according to claim 1, characterized in that it requires the following. The opener device further includes a base plate fixed near the driver's seat,
3. The vehicle hood lock system according to claim 1, wherein the opener handle and the interlocking lever are coaxially supported on the base plate so as to be independently rotatable. The biasing means of the hood lock device has one end latched to the secondary latch and the other end latched to the base plate, so that the biasing means is positioned intermediate between the standby position and the retracted position of the secondary latch. 4. The vehicle hood lock system according to claim 1, wherein the vehicle hood lock system is a turnover spring in which the biasing direction of the biasing force applied to the secondary latch reverses depending on the position. The secondary latch has a contact portion that enters the striker entry groove when the secondary latch is in the retracted position, and when the striker comes into contact with the contact portion due to the closing operation of the hood, the biasing means 5. The vehicle hood lock system according to claim 1, wherein the vehicle hood lock system is forcibly moved from the retracted position to the standby position against a biasing force. The secondary latch is prevented from moving from the standby position to the retracted position by abutting the striker when the striker is engaged with the primary latch mechanism. The vehicle hood lock system according to any one of items 1 to 5.

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