RU131359U1 - Sledging with the possibility of a wheel drive - Google Patents

Abstract

1. Wheel-driven sledges containing runners with upwardly rounded end sections, struts connected to runners, a seat, wheels, characterized in that brackets are fixed on the inner surface of the rounded runner portion, wheels are mounted in holders mounted on axles mounted in brackets, and the holders are pairwise connected by jumpers, the brackets are connected by springs with jumpers, and on the wheels there are stops in contact with the outer surface of the runners. 2. Sled according to claim 1, characterized in that the brackets are mounted on the inner surface of the rounded part of the runners radially.

Description

The inventive utility model relates to vehicles, in particular to sleighs and can be used to transport children on roads with alternating snow-covered and snowless sections.

There are well-known sledges for the city according to the patent of the Russian Federation for utility model No. 78160, B62B 13/18, 11/20/2008, containing a supporting platform with racks on which the runners are fixed. The sled is equipped with wheels mounted for placement in the first position above the runners and in the second position below the sliding surface of the runners. The wheels are mounted on a separate frame connected by levers to the supporting platform. The frame is equipped with a pedal for transferring wheels from the first position to the second.

The disadvantages of the known device are the design complexity and insufficiently high performance due to the inconvenience of using the sled when crossing small sections of the road with no snow cover. The known design does not allow you to cross such areas, rejecting the sled with support on the rear wheels or lower only the rear pair of wheels, which would be less time-consuming.

Known folding sleds with rollers according to the patent of the Russian Federation for utility model No. 111087, B62B 13/00, containing skids with end sections bent upward, pivotally connected to front and rear racks, a handle pivotally connected to racks, seat, rotating elements in the form of wheels mounted on the outside of the curved end sections of the runners. This utility model is adopted as the closest analogue of the claimed technical solution.

The disadvantage of the closest analogue is the low operational characteristics, since there is no possibility of using the device on long sections of the road with no snow cover.

The technical task of the claimed utility model is to improve the operational characteristics of the vehicle.

The technical result consists in improving the operational characteristics of the sled, due to the possibility of independent changes in the position of each pair of wheels above or below the sliding surface of the runners, depending on the condition or length of the intersected sections of the road.

The technical result is achieved in that for sledges with the possibility of wheel running containing runners with upwardly rounded end sections, struts connected to runners, seat, wheels, according to a utility model, brackets are fixed on the inner surface of the rounded part of runners, wheels are mounted in holders, mounted on axles installed in the brackets, the holders being connected in pairs by jumpers, the brackets are connected by springs with jumpers, and on the wheels there are stops in contact with the external skid surface.

In addition, according to a utility model, the brackets are mounted radially on the inner surface of the rounded portion of the runners.

The technical result is ensured by the fact that on the inner side of the rounded end parts of the runners are fixed radially placed brackets with axes installed in them. On axles with a possibility of rotation holders with wheels are fixed. Holders of the front and rear wheels are rigidly connected by jumpers. The brackets are connected by springs with jumpers. Due to this, it becomes possible to independently change and fix the position of the pair of wheels, both above and below the sliding surface of the runners, depending on the state of the movement surface of the claimed sled. The radial arrangement of the brackets on the inner surface of the end parts of the runners provides spring tension equal in magnitude to the upper and lower positions of each pair of wheels, which allows the wheel pairs to be in a stable state, both in the upper and lower positions without additional fixation. The presence of stops on the wheels fixes the position of the wheels and creates a limit on the angle of rotation of the holders. This ensures the functionality of the device in cases of transition to a wheeled drive and at the intersection of minor sections with no snow, relying on the rear wheels without switching to a wheeled drive.

Figure 1 schematically shows a sled with wheels located above the sliding surface of the runners in the case of movement of the sled in the snow.

Figure 2 schematically shows a sled with wheels located below the sliding surface of the runners in the case of moving the sled along the road without snow.

Wheel-mounted sledges contain runners 1 with rounded end parts, a rear strut 2, a front strut 3 consisting of upper and lower parts, a seat 4, radially arranged brackets 5, mounted on the inner surface of the rounded end parts of the runners 1, wheels 6, installed in holders 7, attached to brackets 5 using axles 8, mounted on brackets 5. Holders 7 of the front and rear wheels 6 are fastened in pairs with jumpers 9 connected by springs 10 with brackets 5. The wheels are equipped with proof operation 11. Rear strut 2 and the lower part of the front pillar 3 are attached to runners 1. The upper and lower portions of the front pillar 3 are fastened together with a foldable sledge during transportation and storage. On the bottom of the front strut 3 made leg support in the form of a transverse tube 12.

Runners 1 and racks 2 and 3 of the sled with the possibility of wheel travel are made of metal tubes, and runners 1 - from tubes of flat oval cross-section. Seat 4 - a seat with a back - is made of fabric in the form of a cover with rigid inserts, dressed on racks 2 and 3. A removable cover with a folding visor can be equipped with a warmed pocket for the child’s legs.

Wheel-driven sledges work as follows.

On snowy sections of the road, the device is operated in the traditional way as a sled. In this case, a wheel drive is not required, and the vehicle is supported by skids. Both pairs of wheels 6, front and rear, are set to the upper position. To do this, the jumper 9 when applied force is moved up. The holders 7, rigidly fastened with a jumper 9, rotate around the axles 8 mounted on the brackets 5, the wheels 6 are raised until the stops 11 touch the outer surface of the rounded portion of the runners 1 and are held in the upper position under the action of the compression forces of the springs 10. The stops 11 mounted on the wheels 6 , pressed to the outside of the rounded end parts of the runners 1, limiting the angle of rotation of the holders.

When overcoming minor sections with no snow, the sleds are deflected back to support the rear pair of wheels 6 and until the runners 1 are separated from the road. The stops 11 prevent the wheels 6 from moving upward along the runners 1, which excludes support on the wheels 6.

To suppress longer sections of the road without snow, lower the rear pair of wheels 6 or completely transfer the sled to the wheel drive, depending on the state of the snow cover of the road.

Sleds are transferred to the wheel drive by moving the wheels 6 from the upper position to the lower. To do this, under the action of the applied forces, the jumpers 9 are moved down. The holders 7 due to the rigid fastening with jumpers 9 are rotated around the axles 8 mounted on the brackets 5. The wheels 6 installed in the holders 7 move down under the rectilinear part of the runners 1 until the stops 11 come into contact with the outer surface of the runners 1. Under the action of the springs 10, the stops 11 are pressed to the outer surface of the runners 1. In this position, the vehicle rests on the wheels. Due to the action of the springs 10, the weight of the sled and the presence of stops 11, the wheels 6 are firmly held in the lower position without additional fixation.

Thus, the claimed utility model allows to improve the operational characteristics of the sleigh with the possibility of wheel travel, creates the ability to overcome long and facilitates the suppression of minor sections of the road devoid of snow cover.

Claims (2)

1. Wheel-mounted sledges containing runners with upwardly rounded end sections, struts connected to runners, a seat, wheels, characterized in that brackets are fixed on the inner surface of the rounded runner portion, wheels are mounted in holders mounted on axles mounted in brackets, and the holders are pairwise connected by jumpers, the brackets are connected by springs with jumpers, and on the wheels there are stops in contact with the outer surface of the runners. 2. Sled according to claim 1, characterized in that the brackets are mounted on the inner surface of the rounded part of the runners radially.

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