CN103303167B - A kind of car chair lock - Google Patents

Abstract

The invention discloses an automobile seat lock, which comprises a lock case, and a base plate, a mounting plate, a clamping plate with a return spring, a pawl, a pawl torsion spring and an opening handle assembled in the lock case with the lock case as a support . The invention has the advantages of simple structure, low cost, convenient assembly and disassembly, high locking reliability, and can realize manual unlocking of the car seat under pressure.

Description

car seat lock

technical field

The invention relates to a car seat lock.

Background technique

The car seat lock mainly includes a lock body and a buckle. The lock body is the main part and is generally installed on the car seat. The buckle, as a matching part of the lock body, is usually installed on the vehicle body and corresponds to the lock body.

At present, most of the lock bodies adopt the reaction force two-part structure, and the half-lock and full-lock states are realized through the riveting of the clamp and the ratchet. Most of the car rear seats adopt a push-type structure, and some car rear seats do not have seat locks.

Disadvantages of clamping plate and ratchet riveting methods are: installation and maintenance are inconvenient, and the quality of riveting is controlled by workers.

For cars without seat locks, especially two-box cars, it is inconvenient to fold the rear seats, which affects the size of the trunk space, making it impossible to put more or larger items in the trunk. The seat is not easy to disassemble.

Disadvantages of the push type: the warning mark is not clear, and whether the lock is open or locked cannot be clearly seen.

Contents of the invention

The technical problem to be solved by the present invention is that most of the existing car rear seats adopt a push-type structure, and some car rear seats do not have seat locks.

In order to solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a car seat lock, comprising a lock housing, and a bottom plate, a mounting plate, a clamping plate with a return spring, Pawl, pawl torsion spring and opening handle; the bottom plate is located at the bottom of the lock case, the mounting plate is located on the top of the bottom plate, and the clamping plate and ratchet are sandwiched between the bottom plate and the mounting plate; the clamping plate is assembled on the clamping plate rotating shaft , the top of the card rotating shaft is connected to one end of the mounting plate, the bottom is buckled on the bottom plate, and the card plate is provided with a pawl groove that cooperates with the pawl; the pawl is assembled on the pawl rotating shaft, and the top of the pawl rotating shaft and the card plate The rotating shaft is correspondingly arranged on the other end of the mounting plate, and the bottom is also buckled on the bottom plate; the end of one arm of the pawl is provided with a claw to cooperate with the claw groove on the clamping plate, and the other arm of the pawl is connected to the opening The bottom of the handle is clamped; one end of the pawl torsion spring is hooked to the pawl, and the other end is connected to the lock housing. The inner wall of the lock housing is provided with a slot for clamping the end of the pawl torsion spring; Out of the top of the lock case, the bottom is provided with a groove for clamping the ratchet arm connected thereto; the ratchet torsion spring is hooked on the ratchet, and the return spring on the clamping plate is also buckled on the clamping plate.

The invention adopts the unlocking method of the opening handle, which can realize the manual unlocking of the car seat under pressure; the lock body structure adopts the riveted bayonet mode, which facilitates the disassembly and assembly of the lock body; the door lock type clamping plate is adopted And ratchet way, improve the reliability of locking.

In order to reduce the collision sound caused by the inertia of the seat when it returns, and prolong the service life of the device, a buffer is also provided. The buffer is fixed on the mounting plate, and its contact surface can be in contact with the locking ring of the peripheral . The buffer is generally made of buffer rubber, and the locking ring is in contact with the buffer rubber instead of directly contacting the clamping plate, which can reduce collision and friction.

As an improved solution of the present invention, a pawl gasket is also provided, which is sandwiched between the pawl and the mounting plate, and sleeved on the pawl rotating shaft.

The invention has the advantages of simple structure, low cost, convenient assembly and disassembly, high locking reliability, and can realize the manual unlocking of the car seat under pressure.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention (including the lock case).

Fig. 2 is a schematic structural diagram of the present invention (with the lock case removed).

Fig. 3 is a partial schematic diagram of the base plate and the mounting plate of the present invention.

Fig. 4 is a schematic diagram of the connection relationship between the components located at the inner bottom of the lock housing according to the present invention.

Fig. 5 is a schematic diagram of the connection relationship between the pallet and the pawl in the present invention.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing.

As shown in Figures 1-5, the present invention includes a lock case 1, and a bottom plate 3, a mounting plate 4, a clamping plate 5 with a return spring, a ratchet 6, and a ratchet Claw torsion spring 7 and open handle 2; said base plate 3 is positioned at the bottom of lock case 1, and mounting plate 4 is positioned at the bottom of base plate 3, and clamping plate 5 and ratchet 6 are sandwiched between base plate 3 and mounting plate 4; said clamping plate 5 is assembled on the pallet rotating shaft, the top of the pallet rotating shaft is connected to one end of the mounting plate 4, and the bottom is buckled on the bottom plate 3, and the pallet 5 is provided with a claw groove matching with the pawl; the pawl 6 is assembled on the pawl On the rotating shaft, the top of the pawl rotating shaft is arranged on the other end of the mounting plate 4 corresponding to the clamp rotating shaft, and the bottom is also buckled on the bottom plate 3, and the pawl rotating shaft is sleeved with a pawl gasket 9, and the pawl gasket 9 is located between the ratchet 6 and the mounting plate 4, used to reduce the rigid friction between the two; the end of one arm of the ratchet 6 is provided with a claw to cooperate with the claw groove on the clamp plate 5, and the ratchet 6 The other arm is clamped with the bottom of the opening handle 2; one end of the pawl torsion spring 7 is hooked to the pawl 6, and the other end is connected to the lock case 1, and the inner wall of the lock case 1 is provided with a slot for clamping the pawl torsion spring 7; the upper part of the opening handle 2 protrudes from the top of the lock case 1, and the bottom is provided with a groove for clamping the pawl arm connected thereto; the pawl torsion spring 7 is hooked on the pawl 6, The return spring 8 on the clamping plate 5 is also buckled on the clamping plate 5; a buffer rubber 10 is arranged in the middle of the mounting plate, and the contact surface of the buffer rubber 10 can be in contact with the locking ring of the peripheral device.

It works as follows:

Locking: when the seat returns, the clamping plate 5 will touch the lock ring on the vehicle body, and will rotate clockwise under the push of the lock ring, and compress the clamp spring 8, when the clamping plate rotates clockwise; Simultaneously, because the ratchet torsion spring 7 has the pre-torsion force, the ratchet 6 also rotates clockwise under the effect of the ratchet torsion spring 7, and the lock ring continues to advance to contact with the buffer rubber 10, which reduces the impact caused by the return of the seat. Inertia and collision sound, and finally, under the push of the lock ring, the claw at the end of the pawl arm snaps into the claw groove on the clamp plate, and the two close and self-lock; during this process, the clockwise rotation of the pawl 5 It will also drive the opening handle 2 to swing an angle. When the clamping plate 5 and the pawl 6 are self-locked, the opening handle 2 maintains the angular position after the swing, and the red mark on the end of the opening handle will play a locking warning.

Opening: Toggle the opening handle 2 to drive the pawl 6 to rotate counterclockwise, unlock the self-locking of the pawl 6 and the clamp 5, and the clamp 5 rotates counterclockwise under the action of the return spring 8 to open. In the open state as shown in Figure 5, the end of the clamping plate 5 will withstand the pawl 6, so that the pawl 6 cannot rotate clockwise under the action of the pawl torsion spring 7, so the lock ring can withdraw, and after the opening handle 2 is opened , and will keep the open position, so it can play the role of warning of the unlocked state.

Claims (3)

1. a car chair lock, is characterized in that: comprise lock housing, and take lock housing as the base plate of support assemblies in lock housing, adapter plate, the clamp of band pull back spring, ratchet, ratchet torsion spring and opening handle;

Described base plate is positioned at the bottom of lock housing, and adapter plate is positioned at base plate top, and clamp and ratchet are clipped between base plate and adapter plate;

Described clamp is assemblied in clamp rotating shaft, connection plate one end, top of clamp rotating shaft, and bottom is buckled on base plate, and clamp is provided with the pawl groove with click-fit;

Described ratchet is assemblied in ratchet rotating shaft, the other end being arranged on adapter plate that the top of ratchet rotating shaft is corresponding with clamp rotating shaft, and bottom is also buckled on base plate; One arm end of described ratchet is provided with the pawl slot fit on dog and clamp, another arm of ratchet and the bottom clamping of opening handle;

Described ratchet one end mounting ratchet, the other end connects lock housing, and lock-shell lining is provided with draw-in groove, in order to the termination of clamping ratchet torsion spring;

Lock housing top is stretched out on described opening handle top, and bottom is provided with the pawl arm that groove is attached thereto in order to clamping;

Described ratchet torsion spring buckles on ratchet, and the pull back spring on clamp also buckles on clamp.

2. a kind of car chair lock according to claim 1, is characterized in that: be also provided with damper element, and described damper element is fixing on a mounting board, its contact surface can with the snap close loop contacts of peripheral hardware.

3. a kind of car chair lock according to claim 1 and 2, it is characterized in that: be also provided with ratchet pad, it folds up between ratchet and adapter plate, is socketed in ratchet rotating shaft.