Floor locking and unlocking mechanism

Abstract

The utility model discloses a floor lock unlocking mechanism contains: motor, double gear, second stage big gear and screw rod drive mechanism, the drive shaft of motor is fixed with first stage pinion, and motor drives first stage pinion rotation, the big gear engagement in double gear, drives double gear rotation, second stage big gear is engaged with the pinion in double gear, and double gear drives second stage big gear rotation, the screw rod in screw rod drive mechanism is solidly connected with second stage big gear, and is driven to rotate by second stage big gear, and the nut in screw rod drive mechanism is connected with unlocking cable, and the floor lock is unlocked through unlocking cable drive. The utility model discloses structure compares with traditional face tooth rack drive system structure more compact, makes the space of ground lock executor as small as possible. The mechanism of cylindrical gear and multi -start screw rod cooperation nut is higher in transmission efficiency while avoiding the problem of transmission instability of end face tooth and rack mechanism because of manufacturing tolerance and assembly tolerance.

Description

Technical Field

[0001] This utility model relates to the technical field of unlocking devices for car seat locking mechanisms, and in particular to a floor lock unlocking mechanism. Background Technology

[0002] Currently, most car seat unlocking motors rely on gears and racks combined with end face gear mechanisms to achieve transmission. However, such structures have many drawbacks. For example, the end face gears of the gears and racks are prone to tooth wear when subjected to impact, the spring restoring force required for locking is relatively large, the product structure is difficult to make more compact, and the mechanism is noisy during operation. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a floor lock unlocking mechanism that effectively solves the above-mentioned technical problems existing in the current automotive seat unlocking motors, which mostly rely on gear and rack and end face gear mechanism to achieve transmission.

[0004] The technical problem to be solved by this utility model can be achieved through the following technical solution:

[0005] A floor lock unlocking mechanism, comprising:

[0006] An electric motor, wherein a first-stage pinion is fixed on the drive shaft of the motor, and the motor drives the first-stage pinion to rotate;

[0007] A double gear, wherein the larger gear in the double gear meshes and drives the double gear to rotate;

[0008] A second-stage large gear meshes with a small gear in the double gear, and the double gear drives the second-stage large gear to rotate.

[0009] A lead screw transmission mechanism is provided, wherein the lead screw in the lead screw transmission mechanism is fixedly connected to the second-stage large gear and is driven to rotate by the second-stage large gear. The nut in the lead screw transmission mechanism is connected to the unlocking cable, and the floor lock is unlocked by the unlocking cable.

[0010] In a preferred embodiment of this utility model, a coil spring is further included. The coil spring is driven and connected to the second-stage large gear. When the motor is powered on, it drives the second-stage large gear to rotate. When the second-stage large gear rotates, it drives the coil spring to store energy. When the motor is de-powered, the coil spring releases energy, drives the second-stage large gear to rotate in the opposite direction, drives the lead screw to reverse, and the nut releases the unlocking cable.

[0011] In a preferred embodiment of the present invention, the coil spring is installed in a coil spring box.

[0012] In a preferred embodiment of this utility model, the motor, the first-stage pinion, the double gear,

[0013] The second-stage large gear and lead screw transmission mechanism are installed in a housing, and the housing is covered with a cover, which is fixed to the housing with screws.

[0014] In a preferred embodiment of this utility model, a shock-absorbing block is provided at each of the two extreme positions of the nut's movement inside the housing.

[0015] Thanks to the above technical solution, the structure of this utility model is more compact than that of traditional face-tooth rack and pinion transmission systems, minimizing the space occupied by the floor lock actuator. The mechanism of cylindrical gears and multi-start lead screws with nuts not only improves transmission efficiency but also avoids the transmission instability problems caused by manufacturing and assembly tolerances in face-tooth and rack mechanisms. The required reset torque of the actuator is also reduced, and the installation difficulty of the coil spring is also lower compared to traditional face-tooth floor lock actuators. Attached Figure Description

[0016] Figure 1 This is an exploded view of the floor lock unlocking mechanism of this utility model.

[0017] Figure 2 This is a schematic diagram of the transmission structure of the floor lock unlocking mechanism of this utility model. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] See Figure 1 and Figure 2 The floor lock unlocking mechanism shown in the figure includes a housing 100, a cover 200, a motor 300, a first-stage pinion 400, a double gear 500, a second-stage large gear 600, a lead screw transmission mechanism 700, a coil spring 810, and a coil spring box 820.

[0020] The motor 300, the first-stage pinion 400, the double gear 500, the second-stage large gear 600, and the screw drive mechanism 700 are installed inside the housing 100. The housing 100 is covered with a cover 200, which is fixed to the housing 100 by screws 210.

[0021] The first-stage pinion 400 is fixedly connected to the drive shaft 310 of the motor 300, and the motor 300 drives the first-stage pinion 400 to rotate; the large gear 510 in the double gear 500 meshes with the first-stage pinion 400, and the first-stage pinion 400 drives the double gear 500 to rotate.

[0022] The second-stage large gear 600 meshes with the small gear 520 in the double gear 500, and the double gear 500 drives the second-stage large gear 600 to rotate.

[0023] In the lead screw transmission mechanism 700, the lead screw 710 is fixedly connected to the second-stage large gear 600 and is driven to rotate by the second-stage large gear 600. The nut 720 in the lead screw transmission mechanism 700 is connected to the unlocking cable 900, and the floor lock is unlocked by the unlocking cable 900.

[0024] The coil spring 810 is installed in a coil spring box 820 and is driven by the second-stage large gear 600. When the motor 300 is powered, it drives the second-stage large gear 600 to rotate. When the second-stage large gear 600 rotates, it drives the coil spring 810 to store energy. When the motor 300 is de-powered, the coil spring 810 releases energy, drives the second-stage large gear 600 to rotate in the opposite direction, drives the lead screw 710 to reverse, and the nut 720 releases the unlocking cable 900.

[0025] To better reduce impact and noise, a shock-absorbing block 720a and 720b are respectively installed at the two extreme positions of the nut 720 movement inside the housing 100.

Claims

1. A floor lock unlocking mechanism, characterized in that, Include: An electric motor, wherein a first-stage pinion is fixed on the drive shaft of the motor, and the motor drives the first-stage pinion to rotate; A double gear, wherein the larger gear in the double gear meshes and drives the double gear to rotate; A second-stage large gear meshes with a small gear in the double gear, and the double gear drives the second-stage large gear to rotate. A lead screw transmission mechanism is provided, wherein the lead screw in the lead screw transmission mechanism is fixedly connected to the second-stage large gear and is driven to rotate by the second-stage large gear. The nut in the lead screw transmission mechanism is connected to the unlocking cable, and the floor lock is unlocked by the unlocking cable.

2. The floor lock unlocking mechanism according to claim 1, characterized in that, It also includes a coil spring, which is driven and connected to the second-stage large gear. When the motor is powered on, it drives the second-stage large gear to rotate. When the second-stage large gear rotates, it drives the coil spring to store energy. When the motor is de-powered, the coil spring releases energy, drives the second-stage large gear to rotate in the opposite direction, drives the lead screw to rotate in the opposite direction, and the nut releases the unlocking cable.

3. The floor lock unlocking mechanism according to claim 2, characterized in that, The coil spring is installed inside a coil spring box.

4. A floor lock unlocking mechanism according to any one of claims 1 to 3, characterized in that, The motor, the first-stage pinion, the double gear, the second-stage large gear, and the lead screw transmission mechanism are installed in a housing. The housing is covered with a cover, which is fixed to the housing with screws.

5. A floor lock unlocking mechanism according to claim 4, characterized in that, Inside the housing, a shock-absorbing block is provided at each of the two extreme positions of the nut's movement.

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