EA038131B1 - Device for locking a movable seat of a vehicle having a rearrangeable interior - Google Patents

Abstract

The invention relates to transportation engineering, particularly to seats for vehicles having a rearrangeable interior. The technical result is aimed at increasing reliability when longitudinally locking a sliding element on a guide. Proposed is a device for locking a movable seat of a vehicle having a rearrangeable interior, said device comprising a guide, a sliding element that moves along the guide, and a locking mechanism that includes a lever, wherein the sliding element encloses the guide by means of engaging members, and the locking mechanism comprises a cam that is rigidly connected to the lever, said cam moving about its rotational shaft when said lever is acted upon, and a pivoting element comprising a pressure strip that presses against the guide when interacting with the cam; moreover, the rotational shafts of the cam and of the pivoting element are disposed on the sliding element.

Description

Technology area

The invention relates to transport engineering, in particular to the seats of vehicles with a transformable interior.

Prior art

The proposed invention is intended for installation in vehicle interiors, where transformation of the interior space of the passenger compartment is possible due to the longitudinal displacement of the seat or a group of seats (sofa) along the guides located along the longitudinal axis of the vehicle interior. In such vehicles, the passenger seat belts are attached at all ends to the seat, so that it is possible to move the seat along the passenger compartment in large ranges. For such movable seats, higher requirements are imposed on the reliability of the seat fixation, since at the time of critical situations, the entire load falls on the adhesion of the seat to the floor of the passenger compartment. For this reason, the fixing device for the movable seat used for such vehicles should provide the most reliable longitudinal fixation.

Known locking device for a vehicle seat, patent RU 2174920, IPC B60N 2/07, publ. 20.10.2001. The known device contains a guide, a slider enclosing it, rolling elements placed between them, an amplifier with grooves attached to the guide, and a pivoting latch on the axis. The latch is attached to the slider through the plates with the possibility of fixing in the grooves of the amplifier.

Known device for a car movable seat, patent CN 206067553, IPC B60N 2/07, publ. 04/05/2017, which we take as a prototype. The known device contains a guide rail, a slider moving along the guide rail, a spring, a locking hook, a lever, a hole for fixing, a lever axis. The fixing hole is located on the guide rail, the locking hook is located on the slider and interacts with the fixing hole.

In known devices, the fixation of the slider relative to the guide occurs due to the engagement of the protrusions on the slider with the holes on the guide. It is assumed that in critical situations, the load on the retention of the passenger seat is partially borne by the seat belts, which are attached to the wall of the passenger compartment. If the seat belts do not adhere to the wall of the passenger compartment, then the entire load falls on the adhesion of the movable seat to the floor of the passenger compartment. Due to the high load on the protrusions (in the case of the prototype, on one locking hook) located on the slider, their deformation or shearing is possible at the time of critical loads. Thus, a disadvantage of the known structures is the insufficient reliability of the longitudinal fixation of the guide rail with the slider when it is used for a movable seat of a vehicle with a transformable interior.

Disclosure of invention

The technical result is aimed at increasing the reliability of the longitudinal fixation of the guide with a slider.

The technical result is achieved in that the proposed device for fixing a movable seat of a vehicle with a transformable passenger compartment, comprising a guide, a slider moving along the guide, and a locking mechanism including a lever, while the slider covers the guide with hooks, and the locking mechanism contains a cam rigidly connected to the lever , when acting on which the cam moves around its axis of rotation, and a pivot element containing a clamping bar, which is pressed against the guide when interacting with the cam, while the axes of rotation of the cam and the rotary element are located on the slider.

In particular, the pivot element may contain two V-shaped ribs connected in the region of the axis of rotation of the pivot element, one rib at the end contains an angled clamping bar, which is pressed against the guide when interacting with the cam, and is depressed when the cam interacts with the other rib ...

In particular, the clamping bar can be provided with a protruding element, and the guide is provided with recesses corresponding to the protruding element.

The proposed device is illustrated by the following graphic material.

FIG. 1 shows a device for fixing a movable seat of a vehicle with a transformable passenger compartment in a fixed position in section, side view.

FIG. 2 shows a device for fixing a movable seat of a vehicle with a transformable passenger compartment in the unlocked position in section, side view.

FIG. 3 shows a device for fixing a movable seat of a vehicle with a convertible interior, front view.

The device for fixing a movable seat of a vehicle with a transformable passenger compartment contains a guide 1 and a slider 2 moving along a guide 1. Guide 1 is designed to be mounted in the floor of the vehicle compartment. The part of the guide 1 interacting with the slider 2 has a T-shaped profile. The slider 2 has a U-shaped profile and contains a front hook 3 and a rear hook 4, which embraces the guide 1. The slider 2 is rigidly connected to a support (not shown in the figure), on which the vehicle seat frame is attached. A locking mechanism is located inside the slider 2, which includes a cam 5, a lever 6, which is rigidly connected to

- 1 038131 by cam 5 and exits through the hole 7 in the upper wall of the slider, and the pivoting element 8. When the lever 6 is actuated, the cam 5 rotates around the axis 9, which is located on the slider 2. The fixing device of the movable seat can be equipped with a spring (on Fig. not shown), which connects the slider 2 and the lever 6 and holds them in a fixed position. The pivoting element 8 contains two V-shaped ribs 10 and 11, connected in the region of the axis of rotation 12, which is located on the slider 2. The rib 11 at the end contains an angled clamping bar 13, which is pressed against the guide 1 when interacting with the cam 5 and is pushed out when the cam 5 interacts with the rib 10. The clamping bar 13 can be equipped with a protruding element 14, and the guide 1 is equipped with recesses 15 mating for the protruding element. The slider can be equipped with rollers 16 (or sliding elements) interacting with the guide 1 in the unlocked position.

Implementation of the invention

The proposed device works as follows.

In the initial position, when the seat is not fixed, to fix it, it is necessary to act on the lever 6. When the lever 6 is pressed forward until it stops against the edge of the hole 7, the cam 5 rotates around the axis 9. In this case, the cam 5 engages with the clamping bar 13 and there is a pivotal movement of the element 8 around the axis 12. Next, the cam 5 abuts against the clamping bar 13, which is pressed against the guide 1, and raises the slider 2 to the stop of the hooks 3 and 4 into the guide 1. The pressing forces of the cam 5 of the clamping bar 13 and the hooks 3 and 4 ensure reliable adhesion of the slider to the guide 1, and the resulting friction force between the clamping bar 13 and the guide 1 keeps the slider 2 from longitudinal displacement. At the moment of fixation, the protruding element 14, located on the clamping bar 13, enters the corresponding recess 15, as a result of which an additional force arises that keeps the slider 2 from longitudinal displacement.

When the lever 6 is actuated backward, the cam 5 rotates around the axis 9 in the opposite direction. In this case, the cam 5 comes out of engagement with the clamping bar 13, engages with the rib 10 and there is a pivotal movement of the element 8 around the axis 12. In this case, the clamping strip 13 comes out of contact with the guide 1, the slider 2 is lowered to the stop of the rollers 16 on the guide 1 Due to the rollers 16, the slider 2 can easily move along the guide 1 in this position of the lever 6.

As a rule, for the installation of a mobile seat, at least two parallel-mounted guides 1 are required, on which sliders 2 with a locking mechanism are installed, connected by a transverse rotation shaft (not shown in the figure), which is rigidly connected by its ends to the axes of the cams 5. In this case, the lever 6 is located only on one slider 2, and on the other, the cam 5 receives the rotary movement from the rotation shaft. In this case, there is a synchronous fixing or unlocking of the sliders 2 located on the guides.

Industrial applicability

The proposed device has a simple design, reliable and convenient operation, allows you to adjust the longitudinal movement of the seat in large ranges with reliable fixation in the right place. Tests were carried out for compliance with the necessary regulatory requirements, including those specified in GOST R 41.17-2001, GOST R 41.14-2001. The test results have shown that this vehicle restraint device withstands critical loads and provides a reliable longitudinal fixation of the mobile seat, which in turn improves the safety of the vehicle as a whole.

Claims (3)

CLAIM 1. A device for fixing a movable seat of a vehicle with a transformable passenger compartment, containing a guide, a slider moving along the guide, and a locking mechanism including a lever, characterized in that the slider covers the guide with hooks, and the locking mechanism contains a cam rigidly connected to the lever, when exposed to on which the cam moves around its axis of rotation, and a rotary element containing a clamping bar, which is pressed against the guide when interacting with the cam, while the axes of rotation of the cam and the rotary element are located on the slider. 2. The fixing device according to claim 1, characterized in that the pivot element contains two V-shaped ribs connected in the region of the axis of rotation of the pivot element, one rib at the end contains an angled clamping bar, which is pressed against the guide when interacting with the cam and is pressed out when the cam interacts with another edge. 3. The fixing device according to claim 1, characterized in that the clamping bar is provided with a protruding element, and the guide is provided with recesses corresponding to the protruding element.