JPH08270288A - Pop-up device for engine hood - Google Patents

Abstract

PURPOSE: To increase the quantity of an engine hood opened so as to be able to easily insert a hose, etc., for an external fire extinguisher. CONSTITUTION: A latch member 13 constrains a member to be constrained 12 fitted into the upward recessed section 18 of a main body housing 11 when en engine hood is brought to a locked state. The latch member 13 is constrained by an engaging member 14. A pop-up lever 22 is abutted against the lower side of the member to be constrained 12 by an upward rotational energizing force counterclockwise under the locked state. When an operating wire 17 is pulled in the left direction in Fig., an engaging member 14 releases the latch member 13, and the latch member 13 is liberated. Consequently, the latch member 13 releases the member to be constrained 12 constrained by a forked section 13c. The pop-up lever 22 is tuned by the energizing force of the pop-up lever 22 so as to upwards lift the member to be constrained 12 while being synchronized with the member to be constrained 12. Accordingly, the engine hood is determined by the radius of gyration of the pop-up lever, thus sufficiently increasing the quantity of the engine hood opened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine hood pop-up device for increasing the opening amount of the engine hood in the primary unlocked state in order to facilitate fire extinguishing work by an external fire extinguisher when a vehicle fires.

[0002]

2. Description of the Related Art In recent years, a vehicle fire extinguisher system is being developed and is equipped with a fire extinguisher which can be remotely operated by an occupant who has recognized a vehicle fire. For example, in the specification of Japanese Patent Application No. 5-303051, a fire extinguisher pipe with a nozzle facing the engine room is connected to the jet port of a mounted fire extinguisher arranged in a trunk room, and the cylinder is opened in the mounted fire extinguisher. There is disclosed a system in which a fire extinguisher starting actuator for operating the fire extinguisher starting actuator is operated by operating an emergency vehicle interior switch.

Further, in the specification of Japanese Patent Application No. 5-190451, in order to facilitate fire extinguishing work by an external fire extinguisher, a primary lock of an engine hood (a lock mechanism for completely closing the engine hood, hereinafter referred to simply as It is described that a hood lock release actuator is used to release the lock device). Specifically, the lock device for the automobile hood is configured as shown in FIG. In FIG. 5, a main body housing 1 of the lock device includes a latch member 3 that can be engaged with and disengaged from a striker (restrained member) 2 attached to the engine hood, and the latch member 3 when the engine hood is in a locked state. The engaging locking member 4 to be engaged is held rotatably around the shafts 5 and 6, and one end of a wire 7 operated by the actuator is connected to the locking member 4.

The striker 2 enters the deepest part of the upward recess 8 formed in the housing 1 in the locked state and retracts from the upward recess 8 in the unlocked state. Further, the latch member 3 is biased by the spring member 9 in the arrow B direction, that is, the counterclockwise direction, and the locking member 4 is biased by the spring member 10 in the arrow A, that is, the clockwise direction.

In the lock device, one end of the locking member 4 is engaged with the latch member 3 to prevent the latch member 3 from rotating counterclockwise in the locked state (see the dotted line). The latch member 3 holds the striker 2 that has entered the innermost portion of the upward recess 8 at the forked portion 3a. When the wire 7 is pulled rightward as shown by the arrow C, the engagement is released and the latch member 3 is rotated counterclockwise so that the bifurcated portion 3a faces upward and the latch member 3 is moved to the striker 2
And the engine hood is unlocked by the force of the spring member 9. In this unlocked state, a slight gap is created between the engine hood and the radiator support, so in the vehicle fire extinguishing system,
It is intended that the external fire extinguisher be used for extinguishing the fire by utilizing the gap and that the secondary lock is released to confirm the extinction.

The actuator for releasing the hood lock is operated with a delay of a predetermined time from the time when the vehicle interior switch is operated.

[0007]

However, in the case of a fire in the engine room, it is not easy to burn the engine hood or blow a flame from the gap to bring the hose of the external fire extinguisher close. For this reason, the gap between the engine hood and the radiator support due to the conventional locking device in the vehicle is insufficient for fire extinguishing work by the external fire extinguisher, and confirmation of fire extinguishing cannot be performed at all.

The present invention has been made in view of the above circumstances, and provides a pop-up device for an engine hood which is designed to increase the opening amount of the engine hood in the primary unlocked state without changing the specifications of the conventional locking device. The purpose is to provide.

[0009]

According to a first aspect of the present invention, which has solved the above-mentioned problems, a latch member for locking a restrained member attached to a rear surface of an engine hood at a front end side thereof to lock the engine hood, It is fastened to the radiator support, holds the latch member rotatably by applying an upward turning biasing force, and holds an upward recess for fitting the restrained member in a state of being restrained by the latch member. A lock device including a main body housing having the lock device, and rotation of the latch member in the locked state, and opening of the latch member in the unlocked state to rotate the latch member by the rotation biasing force. An operating means for releasing the constrained member constrained by a member, and a direction for pushing up the constrained member coaxially with or near the rotation axis of the latch member. Rotatably held with force,
A pop-up lever for lifting the engine hood through the restrained member in the state of being separated from the latch member in order to increase an opening amount of the engine hood in a state of the latch member being separated from the restrained member. There is.

According to a second aspect of the present invention, there are a locked state by the lock device and an unlocked state in which the engine hood is opened with the radiator support by operating the operating means to release the lock device. In a settable vehicle, an opening formed between the engine hood and the vehicle body by the weight of the engine hood in the locked state and expanded in the unlocked state to form between the engine hood and the radiator support by the locking device. It is characterized in that a pop-up spring member for further increasing is provided.

In a preferred embodiment, the operating means is a manual hood opening lever provided in the passenger compartment, a thermosensitive actuator in which a thermoplastic member is melted by heat in a fire and a rotating member is directly moved, or an operating wire. A hood lock release actuator such as a winding motor can be included.

[0012]

In the pop-up device according to the first aspect of the present invention, the latch member restrains the restrained member fitted in the upward recess of the main body housing when the engine hood is locked. To maintain this restraint, the weight of the engine hood against the upward rotation biasing force of the latch member and the engagement of the operating means with the latch member are involved.

On the other hand, in the locked state, the pop-up lever is in contact with the lower side of the restrained member with an upward turning biasing force. Then, when the occupant who has recognized the occurrence of the fire operates the operating means by a lever or the like in the vehicle compartment, the operating means releases the latch member, and the latch member releases the restrained member that has been restrained. . In synchronization with this, the pop-up lever is rotated by its urging force so as to lift the restrained member upward. In this way, the engine hood is unlocked and is raised by the rotational biasing force of the pop-up lever.

Since the amount of lift of the engine hood by the pop-up lever is larger than that of the latch member and is determined by the turning radius of the pop-up lever, the opening amount of the engine hood can be made sufficiently large. In the pop-up device of claim 2, the lock device is the same as that of claim 1, for example. Therefore, when the operating means is operated and the latch member is released from the operating means, the latch member rotates upward while releasing the restrained member, and the upward rotation biasing force of the latch member raises the engine hood. To do.

In the pop-up spring member of the present invention, since the engine hood is released from the restraint by the latch member through the restrained member and rises as described above, the pop-up spring member is released from the drag force from the engine hood, The spring force can further lift the engine hood. Therefore, the opening amount of the engine hood can be sufficiently increased by setting the spring force of the pop-up spring member in consideration of the weight of the engine hood.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An engine hood pop-up device according to the present invention will be described below in detail with reference to the drawings showing an embodiment thereof. The pop-up device of the engine hood is shown in a locked state in FIG. 1, and a latch member detachable from a main body housing 11 fixed to a radiator support (not shown) and a restrained member 12 attached to the engine hood side. 13 and a locking member that engages with the latch member 13 when the engine hood (not shown) is in a locked state and cooperates with the engine hood to hold the restrained member 12 restrained by the latch member 13. 14 is mainly configured. Here, the locking member 14 constitutes the operating means of the present invention together with the operating wire described later.

The latch member 13 and the locking member 14 are
It is held so as to be rotatable about rotary shafts 15 and 16 which are parallel to each other (in the front-rear direction). Then, the latch member 13
Is urged in the direction of arrow B, that is, counterclockwise by a spring member 19 having one end fixed to the main body housing 11 and the other end fixed to one end 13a of the latch member 13, and the locking member 14 has one end. Is fixed to the main body housing 11 and the other end is urged in the arrow A direction, that is, the clockwise direction by the spring member 20 fixed to the one end 14a of the locking member 14.

Thus, the latch member 13 to which the counterclockwise rotation biasing force is applied and the locking member 14 to which the clockwise rotation biasing force is applied are as follows.
The locked state in which 2 is restrained is maintained. That is, the engagement member 14 has the peripheral end surface 14b along the periphery of the rotating shaft 16 in the locked state, and the peripheral end surface 14b is the latch member 13.
In order to prevent the counterclockwise rotation of the latch member 13,
Is engaged with the radial end surface 13b along the radial direction of the above, and in this engaged state, the latch member 3 restrains the restrained member 12 entering the innermost portion of the upward recess 18 at the forked portion 13c. There is.

The one end 14a of the locking member 14 is connected to the other end of the operation wire 17 whose one end is connected to the hood opening lever in the vehicle compartment. The operation wire 17 constitutes a part of operation means. The above configuration is conventional. The feature of the present embodiment is that a rotation shaft 21 adjacent to the latch member 13 and parallel to the rotation shaft 15 of the latch member 13 is provided.
It has a pop-up lever 22 supported by. The pop-up lever 22 can be added to the main body housing 11 by mounting the rotating shaft 21 on the bracket 23. The bracket 23 fixes one end of the spring member 24 to one end 23a which is separated from the rotating shaft 21. The other end of the spring member 24 is fixed to the one end 22a of the pop-up lever 22. As a result, the other end 22b of the pop-up lever 22 is connected to the rotation shaft 2
The same counterclockwise rotational biasing force as that of the latch member 13 is applied about 1. In the locked state, the other end 22b of the pop-up lever 22 is located below the constrained member 12.

According to the pop-up device having the above structure, the latch member 13 restrains the restrained member 12 fitted in the upward recess 18 of the main body housing 11 when the engine hood is in the locked state. To maintain this restraint,
Counterclockwise rotation biasing force of the latch member 13 (spring member 1
9) and the engagement of the locking member 14 with the latch member 13 (radial end surface 13).
b and the peripheral end surface 14b) are involved.

On the other hand, in the locked state, the pop-up lever 22 is in contact with the lower side of the restrained member 12 with a counterclockwise upward turning biasing force (based on the spring member 24). Then, when the hood release actuator is operated and the operation wire 17 is pulled in the direction of arrow C (left direction in FIG. 2), the peripheral end surface 14b of the locking member 14 and the radial end surface 13b of the latch member 13 are separated from each other. , The latch member 13 is free. Therefore, the latch member 13 releases the restrained member 12 restrained by the forked portion 13c. In synchronization with this, as shown in FIG. 2, the pop-up lever 22 is rotated by its biasing force so as to lift the restrained member 12 upward. In this way, the engine hood is unlocked and is raised by the rotational biasing force of the pop-up lever 22.

The amount of lift of the engine hood by the pop-up lever 22 is larger than that by the latch member 13 and is determined by the turning radius of the pop-up lever 22 on the side of the other end 22b. Therefore, as shown in FIG. The opening amount L can be made sufficiently large as compared with the case of only the latch member 13 shown by the chain double-dashed line. According to the present embodiment, the opening amount L of the engine hood 25 in the primary unlocked state can be expanded by adding the pop-up lever 22 without changing the specifications of the existing lock device, and the external fire extinguisher can be used. The fire extinguishing work that was performed can be easily performed, and the fire extinguishing status can be confirmed.

As a supplementary matter of this embodiment, FIG.
As shown in FIG. 3, a protrusion 14 ′ that engages with the pop-up lever 22 is provided on the other end side of the locking member 14, and the protrusion 1
When the length of the portion S where 4'is engaged with the pop-up lever 22 is made larger than the length of the peripheral end surface 14b of the locking member 14 to pull the manual hood release lever in the vehicle compartment during normal inspection Has a short pulling distance for the operation wire 17 and a long pulling distance for the operation wire 17 by the hood release actuator in case of a fire emergency so that the same opening amount L'of the engine hood can be obtained during normal inspection. Therefore, in a fire emergency, a large opening amount L by the pop-up lever 22 can be obtained.

As another embodiment, the conventional locking device is attached to the radiator support as it is, and, for example, on both sides of the radiator support, the locking device contracts due to the weight of the engine hood in the locked state and extends in the unlocked state. It is also possible to provide a pop-up spring member. Also in such an embodiment, the opening amount of the engine hood can be increased as in the above-described embodiment using the pop-up lever.

[0025]

As described above, according to the present invention, the opening amount of the engine hood in the primary unlocked state can be increased without changing the specifications of the conventional lock device, and the fire in the engine room can be prevented. In the above, even if the engine hood is burnt or the flame is blown out, the external fire extinguishing work by the hose of the external fire extinguisher is facilitated and the confirmation of the extinction is facilitated.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a locked state of a pop-up device for an engine hood according to an embodiment of the present invention.

FIG. 2 is a configuration diagram showing an unlocked state of the engine hood pop-up device according to the embodiment.

FIG. 3 is an explanatory diagram comparing a state in which the opening amount of the engine hood can be increased by the present invention with a conventional one.

FIG. 4 is a configuration diagram illustrating a pop-up device of an engine hood according to additional notes of the present invention.

FIG. 5 is a configuration diagram showing a conventional device.

[Explanation of symbols]

Reference numeral 11 is a main body housing, 12 is a restrained member, 13 is a latch member, 14 is a locking member (a part of the operating means), 15, 1
Reference numeral 6 is a rotary shaft, 17 is an operation wire, and 22 is a pop-up lever. In the drawings, the same elements are designated by the same reference numerals.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masahiro Miyaji 1 Toyota Town, Toyota City, Aichi Prefecture, Toyota Motor Co., Ltd. (72) Inventor, Satoshi Fujimoto 1 Toyota Town, Toyota City, Aichi Prefecture, Toyota Motor Co., Ltd.

Claims (2)

[Claims] 1. A latch member for locking a restrained member attached to a rear surface of a tip side of an engine hood to lock the engine hood, and a radiator support fixed to the latch member for rotating the latch member upward. A locking device, which comprises a main body housing having an upward concave portion to which a biasing force is applied for rotatably holding, and to which the constrained member constrained by the latch member fits; Operating means for preventing rotation of the latch member, and for releasing the latch member in the unlocked state and rotating the latch member by the rotation biasing force to release the restrained member restrained by the latch member; The latch member is rotatably held by a biasing force in a direction pushing up the constrained member coaxially with or near the rotation axis of the latch member. In order to increase the opening amount of the engine hood in the state of being separated from the restrained member, a pop-up lever for lifting the engine hood via the restrained member in the state of being separated from the latch member is provided. Pop-up device for engine hood. 2. A state in which an engine hood is locked by a locking device fixed to a radiator support and an operating means is operated to release the locking device, and the engine hood forms an opening between the radiator hood and the radiator support. In an unlockable vehicle, between the engine hood and the vehicle body, the engine hood contracts due to the weight of the engine hood in the locked state, and extends in the unlocked state to extend the engine hood and the radiator support by the locking device. A pop-up device for an engine hood, which is provided with a pop-up spring member that further increases an opening generated between the two.