Automobile trunk lock

Abstract

According to the technical scheme, the automobile trunk lock is characterized in that the automobile trunk lock comprises an installation support, a spring bolt and a pawl matched with the spring bolt are rotationally connected to the installation support, coil springs for driving the spring bolt, the pawl and the installation support to reset are arranged among the spring bolt, the pawl and the installation support, and a rotating shaft corresponding to the pawl is a fixed shaft; the spring bolt is fixedly connected with the mounting bracket and rotationally connected with the pawl, the pawl is provided with a brake disc, the fixed shaft is in threaded connection with an unlocking cylinder and in sliding connection with a locking disc matched with the brake disc, a spring for driving the locking disc to be attached to the brake disc is arranged between the locking disc and the unlocking cylinder, and the spring bolt is provided with a locking part clamped with the pawl. An unlocking part is arranged on the locking part; by means of the structure, position locking can be achieved after the pawl rotates to the unlocking position, the pawl can be reset until the spring bolt rotates to the unlocking position, and therefore the situation that the spring bolt is locked again by the pawl in the unlocking state due to the fact that a vehicle door cannot be opened temporarily, and a user cannot open the door is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to an automobile trunk lock. Background Art

[0002] Car door locks belong to the category of car safety systems. Their main function is to protect the safety of the owner's items in the car and the safety of people under various extreme conditions. Corresponding to car door locks, car door locks can be opened normally under any conditions, and cannot be opened under abnormal conditions. When the car trunk door is in a low temperature environment or there is snow on the trunk door, the car sealing strip will be frozen or the elastic force cannot open the trunk door. At this time, when people press the tailgate switch to unlock, the pawl will be in the unlocking position driven by the motor, but the lock tongue will not be able to return to the lock because the car door is frozen. When the motor completes the drive of the pawl, the pawl will rotate to the locking position driven by the return spring, and re-lock the lock tongue, so that the car door is still in the locked state; at this time, the user needs to press the tailgate switch for a long time or multiple times to keep the pawl in the unlocking position for a long time, and then push the trunk vigorously, which is very troublesome to operate. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a car trunk lock, which can lock the position of the pawl after it is rotated to the unlocked position, and the pawl will not be reset until the lock tongue is rotated to the unlocked position, thereby avoiding the situation where the pawl that is already in the unlocked state re-locks the lock tongue due to the temporary inability to open the car door, affecting the user's door opening.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical solution: a car trunk lock, comprising a mounting bracket, on which a lock tongue and a pawl cooperating with the lock tongue are rotatably connected through a rotating shaft, respectively, and a coil spring for driving the lock tongue, the pawl and the mounting bracket are arranged between them; the mounting bracket is also provided with a driving mechanism for driving the pawl away from the lock tongue, and the rotating shaft corresponding to the pawl is a fixed shaft, which is fixedly connected to the mounting bracket and rotatably connected to the pawl, and one side of the pawl is provided with a brake disc arranged coaxially with the fixed shaft, and the fixed shaft An unlocking cylinder is threadedly connected to the fixed shaft and a locking disk that cooperates with the brake disk is slidably connected. A spring that drives the locking disk to fit with the brake disk is provided between the locking disk and the unlocking cylinder. Conical tooth grooves are provided between the sides of the locking disk that fit with the brake disk. The brake disk rotates unidirectionally relative to the locking disk through the conical tooth grooves. A locking portion that engages with the pawl is provided on the lock tongue, and an unlocking component is provided on the locking portion. When the lock tongue rotates from the locked position to the unlocked position, the unlocking component drives the unlocking cylinder to rotate and drives the locking disk to slide in a direction away from the brake disk.

[0005] The utility model is further configured such that one end of the unlocking cylinder is rotatably connected to a connecting cylinder that slidably cooperates with a fixed shaft, the locking disk is slidably arranged on one end of the connecting cylinder close to the brake disk, and the spring is sleeved on the connecting cylinder and abuts between the fixed shaft and the locking disk.

[0006] The utility model is further configured such that the unlocking cylinder is provided with a rotating gear located on the movement path of the locking part, and the unlocking component is an unlocking rack arranged on the locking part and corresponding to the position of the rotating gear. The unlocking rack is arc-shaped, and when the locking part rotates from the locking position to the unlocking position, the unlocking rack will engage with the rotating gear, driving the rotating gear to rotate.

[0007] The utility model is further configured such that the width of the rotating gear is greater than the width of the unlocking rack.

[0008] The utility model is further configured such that the driving mechanism includes a screw rod rotatably arranged on a mounting bracket, the screw rod is connected to a motor, a driving block is threadedly connected to the screw rod and slidably cooperates with the mounting bracket, an abutment groove is provided on the driving block, and the pawl is provided with a driving rod that abuts and cooperates with the abutment groove and can slide along the abutment groove.

[0009] In summary, the beneficial effects of the utility model are:

[0010] Compared with the prior art, the present application fixes a brake disc at the rotation point of the pawl, sets a locking disc that can slide relative to the brake disc on the fixed shaft, and sets a conical tooth groove on the side of the locking disc that fits the brake disc, so that when the user unlocks the door, the motor drives the pawl to rotate to the unlocking position, and the rotation of the pawl is limited by the locking disc on the brake disc. It prevents the lock tongue from being unable to disengage from the lock buckle and return to the position because the door is frozen. After the motor completes the driving of the pawl, the pawl will rotate to the locked position under the push of the return spring; it ensures that when the door is not opened and the lock tongue has not rotated to the unlocking position, the pawl re-locks the lock tongue, so that the door is still in the locked state; the user does not need to press the tailgate switch for a long time or multiple times to keep the pawl in the unlocking position for a long time, and the operation is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structural diagram of this embodiment.

[0012] Figure 2 Schematic diagram of the structure of the brake disc of this embodiment.

[0013] Figure 3 It is a schematic diagram of the unlocked state of the pawl and the lock tongue.

[0014] Figure 4 It is a schematic diagram of the locked state of the pawl and the lock tongue.

[0015] 2. The locking plate is provided with a plurality of locking members, each of which is provided with a plurality of locking members. The plurality of locking members are provided with a plurality of locking members, each of which is provided with a plurality of locking members. The plurality of locking members are provided with a plurality of locking members. The plurality of locking members are provided with a plurality of locking members. DETAILED DESCRIPTION

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0017] like Figure 1-4 As shown, this embodiment discloses a car trunk lock, including a mounting bracket 1, a pawl 3 and a lock tongue 2 connected to the mounting bracket 1 through a rotating shaft, and a coil spring driving the lock tongue 2, the pawl 3 and the mounting bracket 1 to reset is arranged; the coil spring can drive the lock tongue 2 to rotate counterclockwise from the locked position to the unlocked position, and drive the pawl 3 to rotate clockwise from the unlocked position to the locked position; as shown in FIG. Figure 3 As shown, the mounting bracket 1 is also provided with a driving mechanism 10 for driving the ratchet 3 away from the lock tongue 2, and the driving mechanism 10 includes a screw rod 100 rotatably arranged on the mounting bracket 1, the screw rod 100 is connected to a motor 101, a driving block 102 slidably matched with the mounting bracket 1 is threadedly connected to the screw rod 100, an abutting groove 103 is provided on the driving block 102, and the ratchet 3 is provided with a driving rod 104 abutting with the abutting groove 103 and capable of sliding along the abutting groove 103;

[0018] When the user triggers the switch of the trunk lock, the motor 101 will start and drive the screw 100 to rotate. The rotation of the screw 100 will drive the driving block 102 slidably set on the mounting bracket 1 to move in the direction away from the lock tongue 2. Among them, since the driving rod 104 at the end of the pawl 3 abuts and cooperates with the abutment groove 103 of the driving block 102, the driving block 102 can drive the pawl 3 to swing in the direction away from the lock tongue 2 with the fixed axis 4 as the center, and turn from the locked position to the unlocked position, thereby releasing the lock on the lock tongue 2, and then the motor 101 will stop.

[0019] Then as Figure 1-2As shown, the rotating shaft corresponding to the pawl 3 is a fixed shaft 4, which is fixedly connected to the mounting bracket 1 and rotatably connected to the pawl 3. A brake disc 5 coaxially arranged with the fixed shaft 4 is provided on one side of the pawl 3. An unlocking cylinder 6 is threadedly connected to the fixed shaft 4. One end of the unlocking cylinder 6 relative to the brake disc 5 is rotatably connected to a connecting cylinder 61 that slidably cooperates with the fixed shaft 4. The locking disc 7 is slidably arranged on one end of the connecting cylinder 61 close to the brake disc 5. The spring 8 is sleeved on the connecting cylinder 61 and rests between the fixed shaft 4 and the locking disc 7. A spring 8 that drives the locking disc 7 to fit with the brake disc 5 is provided between the locking disc 7 and the unlocking cylinder 6, and the locking disc 7 is in contact with the brake disc 5. Conical tooth grooves 9 are provided between the two surfaces of the locking plate, and the brake disc 5 rotates unidirectionally relative to the locking disc 7 through the conical tooth grooves 9; the lock tongue 2 is provided with a locking portion 21 engaged with the pawl 3, and the locking portion 21 is provided with an unlocking component 22, and the unlocking cylinder 6 is provided with a rotating gear 221 located on the movement path of the locking portion 21, and the unlocking component 22 is an unlocking rack 222 arranged on the locking portion 21 and corresponding to the position of the rotating gear 221, and the unlocking rack 222 is arc-shaped, and when the locking portion 21 rotates from the locked position to the unlocked position, the unlocking rack 222 will mesh with the rotating gear 221, driving the rotating gear 221 to rotate.

[0020] When the motor 101 drives the pawl 3 to rotate to the unlocked position, the pawl 3 will drive the brake disc 5 fixed on one side thereof to rotate, and the brake disc 5 drives one side of the conical tooth groove 9 to always engage with the locking disc 7, and the locking disc 7 is in contact with the brake disc 5 under the action of the spring 8. Therefore, when the brake disc 5 rotates counterclockwise under the action of the pawl 3, due to the shape of the conical tooth groove 9, the locking disc 7 will not limit the rotation of the brake disc 5. When the pawl 3 wants to swing clockwise, the conical tooth groove 9 between the locking disc 7 and the brake disc 5 will be stuck, thereby limiting the rotation of the brake disc 5 and achieving the locking of the pawl 3.

Claims

1. A car trunk lock, comprising a mounting bracket (1), a locking tongue (2) and a ratchet (3) matched with the locking tongue (2) being rotatably connected to the mounting bracket (1) via a rotating shaft, a coil spring for driving the locking tongue (2), the ratchet (3) and the mounting bracket (1) to reset is arranged between the locking tongue (2), the ratchet (3) and the mounting bracket (1); a driving mechanism (10) for driving the ratchet (3) away from the locking tongue (2) is also arranged on the mounting bracket (1), characterized in that: The rotating shaft corresponding to the ratchet (3) is a fixed shaft (4), which is fixedly connected to the mounting bracket (1) and rotatably connected to the ratchet (3); one side of the ratchet (3) is provided with a brake disc (5) coaxially arranged with the fixed shaft (4); an unlocking cylinder (6) is threadedly connected to the fixed shaft (4) and a locking disc (7) matched with the brake disc (5) is slidably connected; a spring (8) for driving the locking disc (7) to fit with the brake disc (5) is provided between the locking disc (7) and the unlocking cylinder (6); the locking disc (5) is locked to the locking disc (5) and the locking disc (7) is locked to the locking disc (5). A conical tooth groove (9) is provided between the side that contacts with the brake disc (5), and the brake disc (5) rotates unidirectionally relative to the locking disc (7) through the conical tooth groove (9); the locking tongue (2) is provided with a locking portion (21) that engages with the ratchet (3), and the locking portion (21) is provided with an unlocking component (22). When the locking tongue (2) rotates from the locking position to the unlocking position, the unlocking component (22) drives the unlocking cylinder (6) to rotate and drives the locking disc (7) to slide in a direction away from the brake disc (5).

2. A car trunk lock according to claim 1, characterized in that: The unlocking cylinder (6) is rotatably connected to one end of the brake disc (5) with a connecting cylinder (61) that is slidably matched with the fixed shaft (4); the locking disc (7) is slidably arranged on one end of the connecting cylinder (61) close to the brake disc (5); and the spring (8) is sleeved on the connecting cylinder (61) and abuts between the fixed shaft (4) and the locking disc (7).

3. A car trunk lock according to claim 2, characterized in that: The unlocking cylinder (6) is provided with a rotating gear (221) located on the movement path of the locking portion (21); the unlocking component (22) is an unlocking rack (222) provided on the locking portion (21) and corresponding to the position of the rotating gear (221); the unlocking rack (222) is arc-shaped; when the locking portion (21) rotates from the locking position to the unlocking position, the unlocking rack (222) meshes with the rotating gear (221) to drive the rotating gear (221) to rotate.

4. A car trunk lock according to claim 3, characterized in that: The width of the rotating gear (221) is greater than the width of the unlocking rack (222).

5. The car trunk lock according to claim 1, characterized in that: The driving mechanism (10) comprises a screw rod (100) rotatably arranged on a mounting bracket (1), the screw rod (100) being connected to a motor (101), a driving block (102) being threadedly connected to the screw rod (100) and slidingly matched with the mounting bracket (1), the driving block (102) being provided with an abutment groove (103), and the ratchet pawl (3) being provided with a driving rod (104) abuttingly matched with the abutment groove (103) and capable of sliding along the abutment groove (103).

Images