Automobile front cover lock

Abstract

The utility model relates to the technical field of vehicle engineering, in particular to an automobile front cover lock which comprises a ratchet wheel, a pawl, a manual module and a suction module, the manual module comprises a manual pull rod and a manual shifting rod driven by the manual pull rod, the manual pull rod and the pawl are coaxial, the manual pull rod limits the pawl in a one-way mode, and when the front cover lock is unlocked, the ratchet wheel is driven by the manual shifting rod to rotate. The manual pull rod pulls the pawl through the limiting part so as to enable the pawl to release limiting of the ratchet wheel, the attraction module comprises an active attraction rod, when the front cover lock needs to be attracted, the active attraction rod is driven by the electric actuator to push the ratchet wheel, the pushed ratchet wheel enters the limiting of the pawl, and when the front cover lock is unlocked, the ratchet wheel is driven to move back and forth. When the manual pull rod pulls the pawl through the limiting part, the manual shifting rod is driven by the manual pull rod to push the driving suction rod aside, and therefore interference of the driving suction rod on the ratchet wheel is relieved. The technical problem that in the prior art, an automobile front cover lock cannot achieve the functions of electric opening, electric suction and manual release at the same time is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle engineering, in particular to a car front cover lock. Background Art

[0002] With the rapid development of automobile electrification and intelligence, OEMs have an increasing demand for hood locks with electric opening and electric closing functions. Currently, most models sold in the domestic market use manual hood locks, which require manual unlocking to open the hood and manual closing of the hood, which cannot meet the needs of automobile electrification development. Utility Model Content

[0003] In order to solve the technical problem that the automobile hood lock in the prior art cannot realize the electric opening, electric closing and manual release functions at the same time, the present application proposes an automobile hood lock that solves the above technical problem.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] The utility model provides a front hood lock of an automobile, the front hood lock comprising: a ratchet and a pawl, which cooperate with each other to make the front hood lock locked, sub-locked, unlocked or need to be sucked in, the pawl can be driven by an electric actuator to release the limit of the ratchet; a manual module, the manual module comprising a manual pull rod and a manual lever driven by the manual pull rod, the manual pull rod is coaxial with the pawl, and the manual pull rod unidirectionally limits the pawl, when the front hood lock is unlocked, the manual pull rod pulls the pawl through a limiting part A pawl, so that the pawl releases the limit on the ratchet; an attraction module, the attraction module includes an active attraction rod, when the front cover lock needs to be attracted, the active attraction rod is driven by an electric actuator to push the ratchet, and the pushed ratchet enters the limit of the pawl, when the front cover lock is unlocked, the manual pull rod pulls the pawl through the limit part at the same time, the manual lever is driven by the manual pull rod to push away the active attraction rod, thereby releasing the interference of the active attraction rod on the ratchet.

[0006] Furthermore, a limit stop is formed at the cooperation point between the pawl and the ratchet, and a three-stage boss is formed at the cooperation point between the ratchet and the pawl. The limit stop and the three-stage boss cooperate with each other to make the front cover lock locked, sub-locked or need to be attracted. When the limit stop and the three-stage boss are not in cooperation, the front cover lock is unlocked.

[0007] Furthermore, the ratchet is provided with a passive suction rod coaxial therewith, and the passive suction rod and the ratchet are mutually limited.

[0008] Furthermore, the front cover lock also includes a lock body, and the lock body includes a bottom plate and a cover plate, and a shell plate fitted therebetween.

[0009] Furthermore, the manual pull rod drives the manual shifting rod through a connecting rod, a bending point of the manual shifting rod forms a rotation point, one end of the connecting rod is hinged to the manual pull rod, and the other end is hinged to the manual shifting rod.

[0010] Furthermore, the suction module also includes: a rotating wheel, which is rotatably engaged between the base plate and the cover plate and is directly driven by an electric actuator; and a movable bracket, which is coaxially arranged with the rotating wheel and on which the active suction rod is hinged.

[0011] Furthermore, the shell plate is provided with an arc-shaped limiting flange, and a limiting pin is formed on the active suction rod which is limited by the limiting flange, so that the active suction rod can only move along the direction of the limiting flange.

[0012] Furthermore, it also includes a signal module, which includes two groups of micro switches, one group of micro switches cooperates with the pawl, and the other group of micro switches cooperates with the ratchet. Through the combination of the pressing positions of multiple micro switches, signals of locking, secondary locking, unlocking and needing to be attracted of the front cover lock are provided.

[0013] Furthermore, a signal rod is hinged on the ratchet wheel and limited by the front cover lock body to press the micro switch.

[0014] Furthermore, a buffer pad is arranged at the keyhole of the front cover lock body.

[0015] Based on the above technical solution, the technical effects that can be achieved by the utility model are:

[0016] The utility model provides a car hood lock, comprising a ratchet and a pawl. The pawl is driven by an electric actuator to release the limit of the ratchet, thereby realizing the electric opening function of the car hood lock; the electric actuator drives the active suction rod of the suction module to push the ratchet into the limit of the pawl, thereby realizing the electric suction function of the car hood lock; the pawl is pulled by the manual pull rod of the manual module to release the limit of the ratchet, thereby realizing the manual release function. At the same time, in order to prevent the active suction rod of the suction module from blocking the rotation path of the ratchet and interfering with the realization of the manual release function, at the same time when the manual pull rod pulls the pawl, the manual pull rod will also drive the manual lever to push the active suction rod away to release the interference of the active suction rod with the ratchet. The manual release function can be realized in various states of the hood lock, thereby solving the technical problem that the car hood lock in the prior art cannot realize the electric opening, electric suction and manual release functions at the same time.

[0017] The utility model provides a car hood lock which can realize electric opening and electric closing functions, can be unlocked by manual release function in case of electronic failure, has compact overall structure, small volume, low noise in opening and closing, and the actuator and lock body are separated, making the layout of the whole vehicle more flexible;

[0018] The utility model provides a car hood lock which can be locked, secondary locked or unlocked only by a ratchet hood lock without a safety lock hook. The lock body can be arranged in a decorative panel, and the car hood is more beautiful after being opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the locking position of the automobile hood lock of the utility model;

[0020] Figure 2 It is the position that the ratchet can move to after the rear pawl of the automobile hood lock of the utility model is pulled for the first time;

[0021] Figure 3 It is a schematic diagram of the secondary lock position of the automobile hood lock of the utility model;

[0022] Figure 4 It is a schematic diagram of the unlocking position of the automobile hood lock of the utility model;

[0023] Figure 5 It is a schematic diagram of the automobile hood lock of the utility model when it needs to be sucked in;

[0024] Figure 6 It is a schematic diagram of the suction module of the automobile hood lock in the locked position of the utility model;

[0025] Figure 7 It is a schematic diagram of the manual module of the automobile hood lock in the locked position of the utility model;

[0026] Figure 8 It is a schematic diagram of the automobile hood lock of the utility model when it is manually released;

[0027] Fig. 9 It is a schematic diagram of a one-way limiting pawl of a manual pull rod of a front hood lock of an automobile of the utility model;

[0028] Fig.10 It is a schematic diagram of the active suction rod of the automobile front cover lock of the utility model being limited by the limiting flap of the shell plate;

[0029] Fig.11 It is an assembly diagram of the manual lever of the automobile hood lock of the utility model on the lock body from one viewing angle;

[0030] Fig.12 It is an assembly diagram of the manual lever of the automobile hood lock of the utility model on the lock body from another perspective;

[0031] Fig.13 It is an assembly diagram of the buffer pad of the automobile hood lock of the utility model on the lock body;

[0032] Fig.14 The utility model is a schematic diagram of an explosion after the automobile hood lock is disassembled.

[0033] In the utility model: 1-ratchet, 11-boss, 12-passive suction rod, 13-signal rod, 14-ratchet torsion spring; 2-pawl, 21-manual pull rod, 211-limiting part, 212-pull rod torsion spring, 22-manual lever, 23-limit stop, 24-connecting rod, 25-pawl torsion spring; 3-suction module, 31-active suction rod, 311-limiting pin, 312-active suction rod reset torsion spring, 32-rotating wheel, 321-rotating wheel torsion spring, 33-movable bracket; 4-lock body, 41-bottom plate, 42-cover plate, 43-shell plate, 431-limiting flange, 44-first rotating shaft, 45-second rotating shaft, 46-third rotating shaft, 47-buffer pad, 48-hinged shaft; 5-signal module, 51-micro switch; 6-manual cable; 7-electric cable. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0035] like Figure 1-14 As shown, the utility model provides a car hood lock with electric opening, electric closing and manual release functions. The hood lock body 4 includes a bottom plate 41 and a cover plate 42, and a shell plate 43 fitted therebetween. The bottom plate 41 and the cover plate 42 are metal parts, and the shell plate 43 is an injection molded part. A first rotating shaft 44 for assembling a pawl 2 and a manual pull rod 21 is arranged between the bottom plate 41 and the cover plate 42, and a second rotating shaft 45 for assembling a ratchet 1 and a passive closing rod 12 is arranged for The third rotating shaft 46 of the assembled rotating wheel 32, the shell plate 43 is connected between the base plate 41 and the cover plate 42 through the first rotating shaft 44 and the second rotating shaft 45. At the same time, the first rotating shaft 44 is also provided with a pawl torsion spring 25 for resetting the pawl 2 and a manual pull rod torsion spring 212 for resetting the manual pull rod 21, the second rotating shaft 45 is also provided with a ratchet torsion spring 14 for resetting the ratchet 1, and the third rotating shaft 46 is provided with a wheel torsion spring 321 for resetting the rotating wheel 32.

[0036] A rubber cushion 47 is arranged at the keyhole of the hood lock body 4, which can play a cushioning role and reduce the locking noise when the hood lock buckle of the automobile is locked.

[0037] The ratchet 1 and pawl 2 of the front cover lock cooperate with each other to make the front cover lock locked, secondarily locked, unlocked or need to be sucked in. Specifically, a limit stop 23 is formed at the cooperation between the pawl 2 and the ratchet 1, and a three-stage boss 11 is formed at the cooperation between the ratchet 1 and the pawl 2. The limit stop 23 and the three-stage boss 11 cooperate with each other to make the front cover lock locked, secondarily locked or need to be sucked in. When the limit stop 23 and the three-stage boss 11 are not coordinated, the front cover lock is unlocked.

[0038] The ratchet 1 is provided with a coaxial passive suction rod 12 , and the passive suction rod 12 and the ratchet 1 are mutually limited.

[0039] The pawl 2 is provided with a manual pull rod 21 of a manual module coaxial with the pawl 2. The manual pull rod 21 unidirectionally limits the pawl 2, that is, the manual pull rod 21 can drive the pawl 2 when it rotates, and cannot drive the manual pull rod 21 when the pawl 2 rotates. The manual pull rod 21 is connected with a manual cable 6. The manual pull rod 21 is movably connected with a connecting rod 24, one end of the connecting rod 24 is hinged to the manual pull rod 21, and the other end is hinged to the manual shift rod 22. The rod body of the manual shift rod 22 is bent, and the bending point of the manual shift rod 22 is configured as a rotation point. An axis is configured on the rotation point to connect the manual shift rod 22 to the shell plate 43.

[0040] The suction module 3 includes a rotating wheel 32, a movable bracket 33 and an active suction rod 31. The movable bracket 33 is coaxially configured with the rotating wheel 32 and is sleeved on the third rotating shaft. The active suction rod 31 is hinged on the movable bracket 33, and the hinge shaft 48 does not coincide with the third rotating shaft. An active suction rod reset torsion spring 312 is arranged on the hinge shaft 48 of the active suction rod 31. A limiting pin 311 is formed on the active suction rod 31. The limiting pin 311 is limited by the arc-shaped limiting flange 431 on the shell plate 43 so that the active suction rod 31 can only move along the direction of the limiting flange 431. Specifically, the active suction rod 31 can rotate around the third rotating shaft 46 with the movable bracket 33, and can also rotate around the hinge shaft 48. The active suction rod 31 always moves along the limiting flange 431 under the counterclockwise torsion force of the torsion spring of the active suction rod 31.

[0041] The signal module 5 includes two groups of micro switches 51, one group of micro switches 51 cooperates with the pawl 2, and the other group of micro switches 51 cooperates with the ratchet 1. Through the combination of the pressing positions of multiple micro switches 51, the locking, secondary locking, unlocking and signals that need to be attracted of the front cover lock are provided. Specifically, the micro switch 51 that cooperates with the pawl 2 is arranged at the end of the pawl 2, and the micro switch 51 that cooperates with the ratchet 1 is triggered by the signal rod 13 hinged on the ratchet 1. One end of the signal rod 13 is hinged on the ratchet 1, and the other end is configured at the micro switch 51 to press the micro switch 51. The rod body of the signal rod 13 is limited by the shell plate 43 so that the signal rod 13 can only move along the extension direction of the rod body.

[0042] The automobile hood lock of the present invention needs to output two strokes by means of an electric actuator, and the electric actuator is equipped with two electric cables 7, one of which is connected to the pawl 2 for driving the pawl 2, and the other is connected to the rotating wheel 32 for driving the pulley.

[0043] The implementation process of the electric opening, electric closing and manual release functions of the automobile hood lock of the utility model is as follows:

[0044] Electric opening function:

[0045] Figure 1 The electric cable 7 of the electric actuator pulls the pawl 2 for the first time, and the pawl 2 rotates clockwise around the first rotation axis 44. The ratchet 1 rotates clockwise around the second rotation axis 45 under the action of the ratchet torsion spring 14 to the locked position. Figure 2 The position is blocked by the ratchet 2, the cable of the electric actuator is released, the ratchet 2 rotates counterclockwise under the action of the ratchet torsion spring 25, and the ratchet 1 continues to rotate clockwise under the action of the ratchet torsion spring 14 to Figure 3 The electric cable 7 of the electric actuator pulls the pawl 2 for the second time, and the pawl 2 rotates clockwise, and the ratchet 1 continues to rotate clockwise to Figure 4 Unlocked position shown;

[0046] Electric suction function:

[0047] Figure 5 The position of the ratchet 1 is different from the locked, secondary locked and unlocked positions of the front cover lock. The signal module 5 provides a signal that the front cover lock needs to be attracted. After the attraction module 3 receives the signal, the electric cable 7 of the electric actuator pulls the rotating wheel 32, and the rotating wheel 32 rotates clockwise around the third rotating shaft 46. The active attraction rod 31 installed on the movable bracket 33 pushes the passive attraction rod 12, and the ratchet 1 rotates counterclockwise to Figure 6 Locking lock position;

[0048] Manual release function:

[0049] Figure 1 and 7The manual pull rod 21 and the pawl 2 are coaxial and unidirectionally limited. The manual pull rod 21 is pulled by the manual pull cable 6, and the manual pull rod 21 pushes the pawl 21 to rotate clockwise around the first rotation axis 44. The unlocking principle is the same as the electric opening function. At the same time, if the suction module 3 is suspended at Figure 7 The position interferes with the ratchet 1, the manual pull rod 21 rotates clockwise around the first rotation axis 44, and drives the manual lever 22 to rotate counterclockwise through the connecting rod 24, and the manual lever 22 pushes the active suction rod 31 to rotate clockwise around the hinge axis 48 to Figure 8 Position, the active suction rod 31 is unlocked, and the limit of the active suction rod 31 on the passive suction rod 12 is released, so that the front cover lock enters the unlocked position and realizes the manual release function. It should be understood that the specific embodiments described above are only used to explain the utility model, and are not used to limit the utility model. Obvious changes or modifications derived from the spirit of the utility model are still within the scope of protection of the utility model.

Claims

1. A car hood lock, characterized in that: The front cover lock comprises: A ratchet (1) and a pawl (2) cooperate with each other to lock, sub-lock, unlock or need to be attracted to the front cover, and the pawl (2) can be driven by an electric actuator to release the limit of the ratchet (1); A manual module, the manual module comprising a manual pull rod (21) and a manual lever (22) driven by the manual pull rod (21), the manual pull rod (21) being coaxial with the pawl (2), and the manual pull rod (21) unidirectionally limiting the pawl (2), when the front cover lock is unlocked, the manual pull rod (21) pulls the pawl (2) through the limiting portion (211) so that the pawl (2) releases the limiting effect on the ratchet (1); The suction module (3) comprises an active suction rod (31). When the front cover lock needs to be sucked in, the active suction rod (31) is driven by an electric actuator to push the ratchet (1). The pushed ratchet (1) enters the limit position of the pawl (2). When the front cover lock is unlocked and the manual pull rod (21) pulls the pawl (2) through the limit portion (211), the manual lever (22) is driven by the manual pull rod (21) to push away the active suction rod (31), thereby releasing the interference of the active suction rod (31) with the ratchet (1).

2. The automobile bonnet lock according to claim 1, characterized in that: A limit stopper (23) is formed at the matching position of the pawl (2) and the ratchet (1), and a three-stage boss (11) is formed at the matching position of the ratchet (1) and the pawl (2). The limit stopper (23) and the three-stage boss (11) cooperate with each other to lock, sub-lock or need to be attracted to the front cover lock. When the limit stopper (23) and the three-stage boss (11) are not matched, the front cover lock is unlocked.

3. The automobile bonnet lock according to claim 1, characterized in that: The ratchet (1) is provided with a passive suction rod (12) coaxial with the ratchet (1), and the passive suction rod (12) and the ratchet (1) are mutually limited.

4. The automobile bonnet lock according to claim 1, characterized in that: The front cover lock also includes a lock body (4), and the lock body (4) includes a bottom plate (41) and a cover plate (42), and a shell plate (43) fitted between the bottom plate (41) and the cover plate (42).

5. The automobile bonnet lock according to claim 4, characterized in that: The manual pull rod (21) drives the manual shift rod (22) through a connecting rod (24); a bending point of the manual shift rod (22) forms a rotation point; one end of the connecting rod (24) is hinged to the manual pull rod (21), and the other end is hinged to the manual shift rod (22).

6. The automobile bonnet lock according to claim 4, characterized in that: The suction module (3) also includes: A rotating wheel (32), the rotating wheel (32) is rotatably engaged between the bottom plate (41) and the cover plate (42), and is directly driven by an electric actuator; A movable bracket (33), wherein the movable bracket (33) is coaxially arranged with the rotating wheel (32), and the active suction rod (31) is hingedly connected to the movable bracket (33).

7. The automobile bonnet lock according to claim 6, characterized in that: The shell plate (43) is provided with an arc-shaped limiting flange (431), and the active suction rod (31) is formed with a limiting pin (311) which is limited by the limiting flange (431), so that the active suction rod (31) can only move along the direction of the limiting flange (431).

8. The automobile hood lock according to claim 1, characterized in that: The invention also comprises a signal module (5), wherein the signal module (5) comprises two groups of micro switches (51), one group of micro switches (51) cooperates with the ratchet (2), and the other group of micro switches (51) cooperates with the ratchet (1), and provides signals of locking, secondary locking, unlocking and needing to be attracted of the front cover lock through the combination of the pressed positions of the plurality of micro switches (51).

9. The automobile bonnet lock according to claim 8, characterized in that: The ratchet wheel (1) is hingedly connected with a signal rod (13) which is limited by the front cover lock body (4) to press the micro switch (51).

10. The automobile hood lock according to claim 1, characterized in that: A buffer pad (47) is arranged at the keyhole of the front cover lock body (4).

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