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CN-122014073-A - Double-pull hood lock

CN122014073ACN 122014073 ACN122014073 ACN 122014073ACN-122014073-A

Abstract

The invention discloses a double-pull hood lock which comprises a lock shell, a clamping plate and a latch hook, wherein the middle parts of the clamping plate and the latch hook are rotationally connected to the lock shell, a first reset piece for driving the clamping plate and the latch hook to rotationally reset is arranged at the rotational connection part, a clamping groove is formed in the clamping plate, a clamping part for clamping the clamping groove is formed in the latch hook, an opening arm is rotationally connected to the lock shell, a pushing part pushed by the opening arm is arranged on the latch hook, the opening arm is hinged with a linkage arm, an avoidance groove for avoiding the linkage arm is formed in the latch hook, a second reset piece for driving the latch hook to rotationally reset is arranged at the hinge part of the opening arm, the end part of the linkage arm is positioned in the avoidance groove when the opening arm is unlocked once, the linkage arm is abutted against the pushing part under the action of the second reset piece for driving the latch hook to rotationally unlock twice, the whole unlocking process only generates impact sound with the clamping plate when the latch hook is in a half-locking state and a full-opening state, the impact sound times and the vibration times of a hood are effectively reduced, and the using experience feeling of people is improved.

Inventors

  • HONG JIAN
  • HAO XIAOBO
  • LIN LIANGGUANG
  • LIAO QIFEI

Assignees

  • 浙江信格科技有限公司

Dates

Publication Date
20260512
Application Date
20260214

Claims (10)

  1. 1. The double-pull hood lock is characterized by comprising a lock shell (1), a clamping plate (2) and a latch hook (3), wherein the middle parts of the clamping plate (2) and the latch hook (3) are rotationally connected to the lock shell (1) and are provided with first reset pieces for driving the latch hook to rotationally reset, the clamping plate (2) is provided with a clamping groove, the latch hook (3) is provided with a clamping part (5) for clamping the clamping groove, the lock shell (1) is rotationally connected with an opening arm (11), the latch hook (3) is provided with a pushing part (13) pushed by the opening arm (11), the opening arm (11) is hinged with a linkage arm (16), the hinge joint of the opening arm (11) is provided with second reset pieces for driving the latch hook to rotationally reset, when the opening arm (11) is once, the end part of the linkage arm (16) is positioned in the avoiding groove (18), and when the opening arm (11) is once, the second reset piece (16) is pushed by the latch hook (3) to rotate for the second time, and the unlocking arm (16) is in a way of pushing the linkage arm (13).
  2. 2. The double-drawer hood lock according to claim 1, wherein the clamping groove comprises a first clamping groove (6) and a second clamping groove (7), the clamping part (5) corresponds to a half-locking state when being clamped with the first clamping groove (6), the clamping part (5) corresponds to a full-locking state when being clamped with the second clamping groove (7), and the end part of the linkage arm (16) is positioned in the avoidance groove (18) and staggered with the pushing part (13) in the full-locking state.
  3. 3. The double-drawer hood lock according to claim 2, wherein the opening arm (11) is provided with a limiting groove (21), the lock shell (1) is provided with a limiting post (22), the limiting post (22) is located in the limiting groove (21), and the limiting post (22) is used for limiting the stroke of the rotation angle of the opening arm (11).
  4. 4. A double-drawer hood lock according to claim 3, wherein the opening arm (11) is connected with a third reset piece for driving the opening arm to rotate and reset, the linkage arm (16) is extended with a driving end (23), and the driving end (23) abuts against the limit post (22) when the opening arm (11) rotates and resets to drive the end part of the linkage arm (16) to face the avoidance groove (18).
  5. 5. A double-drawer lock according to claim 1, characterized in that the rotation center of the opening arm (11) is arranged concentrically with the rotation center of the latch hook (3), the rotation center of the opening arm (11) is provided with a center post (12) rotatably connected to the lock case (1), and the center post (12) penetrates through the latch hook (3).
  6. 6. A lock for a double-puller cover according to claim 1, characterized in that the pushing part (13) has a guide part (24) arranged obliquely on the side close to the avoidance groove (18).
  7. 7. The double-drawer hood lock according to claim 4, wherein one end of the unlocking arm (11) far away from the rotation center is connected with an unlocking pull wire (15), the end part of the unlocking pull wire (15) is provided with a ball body (25), the unlocking arm (11) is provided with a wire groove (26), the diameter of the ball body (25) is larger than the width of the wire groove (26), the third reset piece comprises a tension spring (20), one end of the tension spring (20) is connected with the unlocking arm (11), and the other end of the tension spring is connected with the lock shell (1).
  8. 8. A lock with a double-puller cover as set forth in claim 3 wherein said spacing post (22) is detachably connected to the housing (1), said spacing post (22) being provided with a rigid outer sleeve.
  9. 9. The double-drawer hood lock according to claim 3, wherein the outer wall of the latch hook (3) is coated with a shell (27), a hollowed-out part (28) is arranged at a position, corresponding to the clamping part (5), of the shell (27), and the surface of the latch hook (3) at the hollowed-out part (28) is flush with the surface of the shell (27).
  10. 10. The double-drawer cover lock according to claim 1, wherein the first reset piece comprises a first torsion spring (4), the second reset piece comprises a second torsion spring (19), one end of the second torsion spring (19) is connected with the opening arm (11), the other end of the second torsion spring is connected with the linkage arm (16), an inductive switch (34) is arranged in the lock shell (1), and an abutting part (35) for abutting against the inductive switch (34) is arranged on the clamping plate (2).

Description

Double-pull hood lock Technical Field The invention relates to the field of hood locks, in particular to a double-pull hood lock. Background The hood lock (also commonly called as engine hood lock) is a special locking system arranged at the front surrounding part of an engine hood and a vehicle body of an automobile, the core is a double locking structure, and the engine hood lock is a passive safety key component of the vehicle. The hood lock comprises a single-pull hood lock and a double-pull hood lock according to the types, the double-pull hood lock is adopted in the main stream of the automobile at present, the secondary unlocking of the hood is realized through driving a handle twice, the existing double-pull hood lock mainly comprises a lock shell, a locking claw and a clamping plate, the impact sound of one unlocking is generated from full locking to excessive locking in the unlocking process, the locking claw is released to a half locking state to generate the impact sound of one unlocking again, the locking claw is pulled again to be fully locked to fully opened to generate the impact sound of one unlocking, the number of times of impact sound is large during unlocking, the hood can vibrate during impacting, and the use experience is influenced relatively, so that the hood lock is to be further improved and perfected. Disclosure of Invention The application provides a double-pull hood lock, which aims to reduce the impact sound frequency and the vibration frequency of a hood during unlocking. The application provides a double-pull hood lock, which adopts the following technical scheme: The utility model provides a double-pull hood lock, includes lock shell, cardboard and latch dog, the middle part of cardboard and latch dog is all rotated and is connected on the lock shell and rotates the junction and all is provided with the first piece that resets that drives its rotation and reset, have the joint groove on the cardboard, the last joint portion that is used for the joint groove joint that has of latch dog, it is connected with the opening arm to rotate on the lock shell, the pushing part that is pushed by the opening arm to have on the latch dog, it has the link arm to open to articulate, the slot of dodging of link arm has on the latch dog, the articulated department of opening the arm is provided with the second piece that resets that drives its rotation and reset, when opening the arm once unblanked, the link arm is located dodging the inslot, when opening the arm secondary unblanking, the latch dog is driven to rotate to carry out the secondary unblock to butt pushing part under the second reset. Optionally, the joint groove includes first joint groove and second joint groove, correspond half lock state when joint portion and first joint groove joint, correspond full lock state when joint portion and second joint groove joint, the tip of link arm is located dodge the inslot and staggers with the pushing part during full lock state. Optionally, be provided with the spacing groove on the opening arm, be provided with spacing post on the lock shell, spacing post is located the spacing inslot, spacing post is used for carrying out the stroke spacing to the turned angle of opening the arm. Optionally, be connected with the third piece that resets that drives its rotation to reset on the opening arm, it has the drive end to extend on the link arm, the drive end butt spacing post drives the tip of link arm towards dodging the groove when opening the arm and rotating to reset. Optionally, the rotation center of the opening arm and the rotation center of the latch hook are concentrically arranged, the rotation center of the opening arm is provided with a center post rotationally connected to the lock shell, and the center post penetrates through the latch hook. Optionally, a guide part is obliquely arranged at one side of the pushing part, which is close to the avoidance groove. Optionally, the one end that the arm kept away from rotation center is opened and is connected with the stay wire that unblanks, the tip that the stay wire was opened to unblanked has the spheroid, open and have the wire casing on the arm, the spheroidal diameter is greater than the width of wire casing, the third piece that resets includes the extension spring, the one end and the arm that opens of extension spring are connected, and the other end is connected with the lock shell. Optionally, the spacing post is connected with the lock shell can be dismantled, the cover is equipped with the stereoplasm overcoat on the spacing post. Optionally, the outer wall cladding of latch dog has the shell, the shell corresponds joint portion department and has fretwork portion, fretwork portion department latch dog surface flushes the setting with the shell surface. Optionally, the first piece that resets includes first torsional spring, the second piece that resets includes the second torsional spring, the one end and the arm of openi