RU2679753C1 - Rotary device for the vehicle seat installation - Google Patents

Abstract

FIELD: vehicle equipment and accessories.SUBSTANCE: invention relates to the vehicle seat mounting rotary device. Device consists of the support post, intermediate crank, end crank. In the assembled state, the cranks are freely scrolling in the connections between each other without the end crank contact with the bearing surface. Structure is self-fixing with the useful load application to the end crank due to skewing and the friction forces increase in the cranks joints. Seat movement and fixation possible places range is in the range between the support post and the end crank heel movement maximum radius.EFFECT: enabling the rotating device development for the vehicle seat installation with a large range of the seat movement and self-locking at the selected location.3 cl, 6 dwg

Description

The invention relates to the device of household, medical or other similar furniture, as well as to transport engineering and can be used for installation in the workplace of a seat, including an office seat or a vehicle seat, for example, a ship.

A rotary device for a vehicle seat is known, comprising a base, an intermediate support, in which two parallel axles are mounted, one of which is attached to the base of the seat, and the other is mounted on the vehicle body (AS 1782796, B60N 2/02, publ. . 23.12.92).

A disadvantage of the known device is that the displacement of the axles and the location of the rotation mechanism, made at a great distance from the vehicle floor, creates a large bending moment at the place of attachment of the seat to the floor, which in turn complicates and aggravates the structure. In addition, the range of movement of the seat in the horizontal plane is limited by the trajectory of rotation of the seat in a circle with a radius equal to the magnitude of the displacement of the axes, and the number of fixed positions is limited. The device is not easily separable.

The closest functionally to the claimed solution is a horizontally rotating chair containing a vertically located hinge pin mounted on the floor, with two sequentially pivotally mounted elements connected at the end to the third element with a vertically located support bracket on which the seat is mounted (US 295339363, publ. 12.12.50).

The advantage of this design is the convenience of changing the position of the seat in a wide range of horizontal movements, as well as the relative simplicity and lightness of the design.

A disadvantage of the known design is the inability to fix the seat in the selected location.

The technical result of the invention is to create a collapsible design of a rotary device for installing a vehicle seat with a wide range of seat movements and self-locking in a selected location.

The specified technical result is achieved by the fact that in the rotary device for installing the vehicle seat containing the support strut, the intermediate crank, the terminal crank, these elements in the assembled state freely rotate in the connections between each other without contact of the terminal crank with the supporting surface, but when the payload is applied they are self-fixed due to the increase in the friction forces caused by the distortion of the structure in the spots of stress concentration in the joints, as well as due to the redistribution of n loads on the floor between the support post and the heel of the end crank with the occurrence of friction force at the contact point that has arisen, while the range of possible places for moving and fixing the seat is infinite between the support post and the maximum radius of movement of the end of the crank of the end due to the provision of unloaded condition at any point in the range movements of the working gap between the heel of the end crank and the supporting surface due to a fixed angle of inclination of the axis of the upper spike to the lower at the crank span full-time.

In the particular case of the product, the rotary device is configured to secure the seat on it using a gas lift.

In the particular case of the product, the rotary device is easily collapsible.

The invention is illustrated by the following drawings:

Figure 1 - the main components of the rotary device;

Figure 2 - composition of the kit with a seat;

Figure 3 is a kinematic diagram of a rotary device;

Figure 4 - rotary device assembly with a seat;

5 is a zone of infinite variation in seat placement;

6 - placement of the device on an inflatable boat.

The explanatory inventions and drawings do not cover, and even more so do not limit the entire scope of the claims of this technical solution, but are only illustrative materials of a particular case of its implementation.

The rotary device (Fig. 1) consists of the following main components: support strut 1, crank intermediate 2, crank terminal 3.

The presented drawings suggest a special case of an embodiment of the invention in which the terminal crank 3 is made in a form factor that allows to securely fix the gas lift 4 in it (Fig. 2) using, if necessary, an obturator adapter 5. On a gas elevator using piastres 6 is fixed to the seat 7.

In the construction of the intermediate crank 2, the axes of the lower and upper spikes are not parallel. There is a deviation of the axis of the upper spike towards the lower and, accordingly, to the axis of the support column 1 in the assembly (Fig. 3).

The inclination of the upper crank of the intermediate crank is designed to compensate for the change in torque depending on the change in the shoulder of the application of the payload to the support column in order to optimize the redistribution of loads on the support surface and between structural elements. In addition, this creates optimal efforts for the occurrence of the required friction forces in the joints of the structural elements of the rack.

The angle ω of the deflection of the upper spike of the intermediate crank is the sum of the angles α and β of the deviation of the axes of the spikes in the movable joints of the structural members and the angle γ, which forms the working gap between the horizontal plane and the line connecting the points of the minimum and maximum height of the position in the vertical plane of the heel of the final crank in the closest as far as possible from the support column without the application of a payload.

The ratio of the diameters of the articulated cranks of the cranks and the support strut should be selected taking into account the minimum clearances in the joints, assuming free rotation relative to each other without applying a payload.

The levels of the minimum and maximum height of the position in the vertical plane of the heel of the crank of the terminal relative to the level of the supporting surface should limit such ranges of deformation of the structure under the influence of the payload at which deformation occurs while maintaining the elastic properties of the structural elements without crossing the yield strength of materials.

The procedure for using the rotary device is as follows.

The support column 1 is fixed with bolts 8 on a flat horizontal surface in the center of the desired range of movement of the seat.

The structure is assembled in accordance with the image in FIG. 4. All assembly components are freely inserted into their seats to the stop.

When a rider is placed on the seat, a payload occurs that closes the heel of the terminal crank into the supporting surface while loading the joints of the structure with a torque that creates friction forces that fix the relative angular position of the cranks in this particular position. Additionally, friction force arising between the heel of the end crank and the supporting surface keeps the seat from moving in the horizontal plane. To increase the last frictional force for application conditions on specific types of supporting surfaces, the design of the final crank can be supplemented with the corresponding friction lining (not shown in the images) while maintaining the initial dimensions of the crank.

The rider selects the vertical position of the rider using standard gas lift manipulations. Also, by torsion of the seat on the gas lift, the rider selects the required orientation to the cardinal points.

To change the location of the chair, it is enough to stand up (remove the payload) and freely move the chair to the desired position within the physical range of movement of the heel of the crank terminal relative to the support strut (Fig. 5).

The most popular is expected to use a rotary device on small boats, including inflatable boats with a hard floor (floor), as well as in salons of mobile homes, kung mobile workshops, etc.

An example of installing a rotary device in a rigid floor inflatable boat is shown in FIG. 6.

In addition, product elements can be used outside the vehicle for convenient placement on other flat surfaces.

The prototype of the product has been successfully tested on inflatable boats with a hard floor (floor), including when traveling on waves. The product allows the user to conveniently fit with a secure fit both when controlling the boat, and in different positions when fishing.

Thus, in the most complete package, the product can be represented as follows: it consists of a support stand, an intermediate crank, a terminal crank, a gas lift with a shutter, a piastra, a seat.

Claims (3)

1. A rotary device for installing a vehicle seat, consisting of a support strut, an intermediate crank, an end crank, which in the assembled state freely scroll in the connections between each other without contact of the terminal crank with the supporting surface, but when the payload is applied to the crank, the terminal self-fixes due to the increase in the friction forces in the spots of stress concentration in the joints caused by the skew of the structure, as well as due to the redistribution of the load on the floor between the support with a support and heel of the end crank with the occurrence of friction force at the contact point that has arisen, while the range of possible places of movement and fixation of the seat is infinite between the support column and the maximum radius of movement of the end of the crank of the end due to the provision of an unloaded condition at any point in the range of movement of the working gap between the heel the end crank and the supporting surface due to a fixed angle of inclination of the upper spike to the lower one at the intermediate crank. 2. The rotary device for installing a vehicle seat according to claim 1, characterized in that it is made with the possibility of fixing the seat on it using a gas lift. 3. The rotary device for installing a vehicle seat according to claim 1 or 2, characterized in that the structure is easily collapsible.

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