DE202018102698U1 - Tricycle with yaw mechanism - Google Patents

Abstract

A tricycle having a yaw mechanism comprising a main frame, a yaw mechanism, a steerable wheel, and two rear wheels, the two rear wheels being drive wheels, the yaw mechanism being located at the rear end of the main frame, the two rear wheels being connected to the yaw mechanism; both rear wheels are disposed symmetrically on both sides of the center main frame, the steerable wheel being disposed in the front portion of the main frame; wherein the yaw mechanism comprises a yaw bar, a left swing arm, and a right swing arm, the middle portion of the yaw bar rotatably including the pivot axis located at the rear end of the transfer pivot arm, the forward end of the transfer pivot arm being hinged to the main frame; wherein the left end and the right end of the yaw bar are each provided with a first pivot bearing and a second pivot bearing; wherein both the front end of the left rocker and the front end of the right rocker are coaxially hinged to the main frame; wherein the outer end of the left rocker and the outer end of the right rocker are each provided with a left attachment axis and a right attachment axis, wherein each of a third joint bearing and a fourth joint bearing are attached to the left attachment axis and the right attachment axis; wherein the first pivot bearing is connected via the left connecting rod with the corresponding third pivot bearing; wherein the second pivot bearing is connected via the right connecting rod with the corresponding fourth pivot bearing; wherein a shock absorber is disposed between the transitional pivot arm and the main frame; wherein a yaw locking mechanism is disposed between the yaw bar and the transfer pivot arm.

Description

Technical field of the invention

The present invention relates to a means of transport and in particular a tricycle with yaw mechanism.

State of the art

Tricycles include a main frame, a steerable wheel and two rear wheels. The main frame comprises a main frame and a rear rocker, wherein the rear rocker is articulated to the main frame, wherein the rear rocker can swing up or down relative to the main frame. If you turn with a tricycle having this construction, the two rear wheels continue to rotate at the same height and the entire main frame is in a state in which the main frame does not tilt laterally. As a result, when turning with the tricycle, the centrifugal force and gravity of the vehicle body and the passengers can not be balanced, so that the vehicle body can easily come off or slip sideways, posing a safety risk.

In addition, there is a difference in speed between the two rear wheels in the existing market tricycles. For example, when turning left, the speed of the left rear wheel is lower than that of the right rear wheel. To compensate for the speed difference between the left rear wheel and the right rear wheel, a mechanical differential gear has to be used, which increases the total weight of the tricycle, complicates the power transmission structure, decreases mechanical efficiency and increases energy loss. All this is accompanied by many inconveniences such as high production costs and difficulties in subsequent maintenance and repair.

Object of the invention

The present invention provides a tricycle with a yawing mechanism, by which the problem in the prior art that when turning with the tricycle there is a safety risk of lateral lifting of the vehicle body, since the two rear wheels continue to rotate at the same height relative to the main frame and the whole Main frame is vertical to the ground, can be solved. At the same time, the invention can solve the problems of the complicated vehicle drive system, the high manufacturing costs and the difficulties in the later maintenance and repair.

In order to achieve the above objects, the present invention provides the following technical means:

The present invention includes a main frame, a yaw mechanism, a steerable wheel, and two rear wheels. The two rear wheels are drive wheels. The yaw mechanism is located at the rear end of the main frame. The two rear wheels are connected to the yaw mechanism, the two rear wheels being arranged symmetrically on both sides of the main frame serving as the center. The steerable wheel is disposed in the front portion of the main frame.

The yaw mechanism includes a yaw bar, a left swing arm, and a right swing arm, wherein the middle portion of the yaw bar rotatably includes the pivot axis located at the rear end of the transfer pivot arm, the forward end of the transfer pivot arm being hinged to the main frame; wherein the left end and the right end of the yaw bar are each provided with a first pivot bearing and a second pivot bearing; wherein both the front end of the left rocker and the front end of the right rocker are coaxially hinged to the main frame; wherein the outer end of the left rocker and the outer end of the right rocker are each provided with a left attachment axis and a right attachment axis, wherein each of a third joint bearing and a fourth joint bearing are attached to the left attachment axis and the right attachment axis; wherein the first pivot bearing is connected via the left connecting rod with the corresponding third pivot bearing; wherein the second pivot bearing is connected via the right connecting rod with the corresponding fourth pivot bearing; wherein a shock absorber is disposed between the transitional pivot arm and the main frame; wherein a yaw locking mechanism is disposed between the yaw bar and the transfer pivot arm.

The yaw bar includes a front yaw plate and a rear yaw plate structurally the same, each having a left mounting hole, a middle mounting hole, and a right mounting hole on the left side, the middle portion, and the right side of the front yaw plate and the rear one, respectively Are provided yaw plate; wherein a bearing sleeve is provided in the middle mounting hole of the front and rear yaw plates, wherein a bearing is provided in the bearing sleeve, wherein the pivot axis is inserted into the shaft hole of the bearing; wherein the first hinge bearing is disposed corresponding to a left position located between the front and rear yaw plates, wherein Bolt is inserted through the left mounting holes and the first joint bearing, which serves to connect the first joint bearing, the front and rear yawing plate together; wherein the second pivot bearing is disposed corresponding to a right position located between the front and rear yaw plates, with a bolt passing through the right mounting holes and the second pivot bearing, serving the second pivot bearing, the front yaw plate, and the rear yaw plate to connect with each other.

The yaw locking mechanism includes a limit plate attached to the front end of the front yaw plate and a yaw brake caliper secured to the transitional pivot arm and locking the boundary plate. The boundary plate is pivoted together with the yaw bar to the left and right. Once the yaw caliper and the restrictor plate are matched and locked together, the yaw bar and main frame are secured together, thereby completing the parking operation.

Advantageous Effects of the Present Invention:

When turning with the tricycle according to the invention, the left rocker and the right rocker are enabled by the yaw mechanism to pivot laterally relative to the main frame, d. H. the left rocker and right rocker pivot in opposite directions relative to the main frame, with the left rocker moving upwardly about the propeller shaft relative to the main frame and the right rocker moving downwardly about the propeller shaft relative to the main frame. This guarantees that the axles of the hubs of the two rear wheels are absolutely parallel to each other in any movement mode. At the same time, an improvement in the tipping resistance of the tricycle can be ensured for the user, so that accidents caused by lateral lifting of the vehicle do not occur easily. By means of the invention it can be ensured that the three wheels are always in contact with the ground in order to enlarge the entire contact surface between the tire and the ground, thereby enabling a smooth, comfortable and safe driving experience and safe driving.

The conventional tilting stand can be replaced by the yaw locking mechanism according to the invention. When the tricycle is parked, the yaw caliper is locked correspondingly to the restriction plate, whereby the restriction plate and the main frame are fastened together so that the yaw mechanism and the main frame lock each other to cause the vehicle body to incline with respect to the ground so as to be parked the stability increases.

list of figures

• 1 eine schematische perspektivische Darstellung gemäß der vorliegenden Erfindung, bei der die beiden Hinterräder entfernt sind;
• 2 eine schematische perspektivische Explosionsdarstellung des erfindungsgemäßen Giermechanismus;
• 3 eine perspektivische Darstellung gemäß der vorliegenden Erfindung;
• 4 eine Schnittansicht gemäß der vorliegenden Erfindung.

The drawings used to explain the embodiment show:

• 1 a schematic perspective view according to the present invention, in which the two rear wheels are removed;
• 2 a schematic perspective exploded view of the yawing mechanism according to the invention;
• 3 a perspective view according to the present invention;
• 4 a sectional view according to the present invention.

Detailed Description of the Preferred Embodiment

See the 1 to 4 , The tricycle with yaw mechanism according to the invention comprises a main frame 1 , a yawing mechanism 2 , a steerable wheel 3 and two rear wheels 4 , The two rear wheels 4 are drive wheels. The yaw mechanism 2 is at the far end of the main frame 1 arranged. The two rear wheels 4 are with the yaw mechanism 2 connected, with the two rear wheels 4 symmetrical on both sides of the main frame serving as the center 1 are arranged. The steerable wheel 3 is in the front section of the main frame 1 arranged.

The yaw mechanism 2 includes a yaw pole 5 , a left wing 6 and a right wing 7 , where the middle part of the yaw 5 rotatable at the rear end of the transitional pivot arm 24 located pivot axis 8th includes, wherein the front end of the transitional pivot arm 24 is hinged to the main frame 1; the left end and the right end of the yaw bar 5 each with a first joint bearing 9 and a second joint bearing 10 are provided; with both the front end of the left swingarm 6 as well as the front end of the right wing 7 coaxial with the main frame 1 are articulated; the outer end of the left swingarm 6 and the outer end of the right wing 7 each with a left attachment axis 11 and a right mounting axle 12 are provided, wherein in each case a third joint bearing 13 and a fourth joint bearing 14 on the left attachment axis 11 and the right attachment axis 12 are attached; being the first joint bearing 9 over the left connecting rod 15 with the corresponding third joint bearing 13 connected is; the second joint bearing 10 over the right connecting rod 16 with the corresponding fourth joint bearing 14 connected is; being a shock absorber 17 between the transitional pivot arm 24 and the main frame 1 is arranged, wherein the shock absorber 17 a first condyle 18 , a second condyle 19, each on the transitional pivot arm 24 and main frame 1 are hinged, and one between the first condyle 18 and the second condyle 19 arranged spring 20 includes, where the entire shock absorber 17 is arranged inclined.

More specifically, the yawstick includes 5 a front yaw plate 21 and a rear yaw plate 22 structurally the same, each with a left mounting hole 23 , a middle mounting hole (not shown) and a right mounting hole 25 on the left side, in the middle section and on the right side of the front yaw plate 21 or the rear yaw plate 22 are provided; wherein a bearing sleeve 26 in the middle mounting hole (not shown) of the front yaw plate 21 or the rear yaw plate 22 is provided, with a bearing 27 in the bearing sleeve 26 is provided, wherein the pivot axis 8th into the shaft hole of the camp 27 is used; being the first joint bearing 9 corresponding to one between the front yaw plate 21 and the rear yaw plate 22 located left position, wherein a bolt 28 through the left mounting holes 23 and the first joint bearing 9 what serves to the first joint bearing 9 , the front yaw plate 21 and the rear yaw plate 22 to connect with each other; the second joint bearing 10 corresponding to one between the front yaw plate 21 and the rear yaw plate 22 located right position, wherein a bolt 28 through the right mounting holes 25 and the second joint bearing 10 is inserted, which serves the second joint bearing 10 , the front yaw plate 21 and the rear yaw plate 22 to connect with each other.

In order to facilitate the parking of the tricycle with yaw mechanism, the conventional tilting stand is by the yaw locking mechanism according to the invention 29 replaced, the yaw locking mechanism 29 between the yaw 5 and the transitional pivot arm 24 is arranged. The yaw locking mechanism 29 includes one at the front end of the front yaw plate 21 attached boundary plate 30 and one at the transitional pivot arm 24 fastened and the boundary plate 30 arresting yaw brake caliper 31 , The boundary plate 30 is pivoted together with the yaw rod 5 to the left and right. Once the yaw caliper 31 and the boundary plate 30 are matched and locked, the yaw 5 and the main frame 1 fastened together, whereby the parking process is then completed.

When turning with the tricycle with yaw mechanism according to the invention, the yaw bar rotates 5 around the pivot axis 8th , where the left-hand rear wheel moves up and the right-hand rear wheel moves down when turning left, with the right-hand rear wheel moving up and the left-hand rear wheel moving down when turning right. Here, the axes of the hubs of the two rear wheels are absolutely parallel to each other to ensure that the vehicle body tilts slightly to the side when turning, so that the centrifugal force and gravity of the tricycle and the people keep the balance and the three wheels always with the ground in Can contact to increase the entire contact surface between the tire and the ground and thereby effectively prevent lateral lifting and sliding sideways of the tricycle.

Claims (3)

A tricycle having a yaw mechanism comprising a main frame, a yaw mechanism, a steerable wheel, and two rear wheels, the two rear wheels being drive wheels, the yaw mechanism being located at the rear end of the main frame, the two rear wheels being connected to the yaw mechanism; both rear wheels are disposed symmetrically on both sides of the center main frame, the steerable wheel being disposed in the front portion of the main frame; wherein the yaw mechanism comprises a yaw bar, a left swing arm, and a right swing arm, the middle portion of the yaw bar rotatably including the pivot axis located at the rear end of the transfer pivot arm, the forward end of the transfer pivot arm being hinged to the main frame; wherein the left end and the right end of the yaw bar are each provided with a first pivot bearing and a second pivot bearing; wherein both the front end of the left rocker and the front end of the right rocker are coaxially hinged to the main frame; wherein the outer end of the left rocker and the outer end of the right rocker are each provided with a left attachment axis and a right attachment axis, wherein each of a third joint bearing and a fourth joint bearing are attached to the left attachment axis and the right attachment axis; wherein the first pivot bearing is connected via the left connecting rod with the corresponding third pivot bearing; wherein the second pivot bearing is connected via the right connecting rod with the corresponding fourth pivot bearing; wherein a shock absorber is disposed between the transitional pivot arm and the main frame; wherein a yaw locking mechanism is disposed between the yaw bar and the transfer pivot arm. Tricycle with yaw mechanism after Claim 1 in which the yaw rod has a front yaw plate and a rear yaw plate that is structurally the same are provided, wherein each of a left mounting hole, a middle mounting hole and a right mounting hole on the left side, in the middle section and on the right side of the front and rear yaw plate are provided; wherein a bearing sleeve is provided in the middle mounting hole of the front and rear yaw plates, wherein a bearing is provided in the bearing sleeve, wherein the pivot axis is inserted into the shaft hole of the bearing; wherein the first hinge bearing is disposed corresponding to a left position located between the front and rear yaw plates, with a bolt inserted through the left mounting holes and the first pivot bearing, serving the first pivot bearing, the front yaw plate, and the rear yaw plate to connect with each other; wherein the second pivot bearing is disposed corresponding to a right position located between the front and rear yaw plates, with a bolt passing through the right mounting holes and the second pivot bearing, serving the second pivot bearing, the front yaw plate, and the rear yaw plate to connect with each other. Tricycle with yaw mechanism after Claim 2 wherein the yaw locking mechanism comprises a limit plate attached to the front end of the front yaw plate and a yaw caliper secured to the transitional pivot arm and locking the restriction plate, the boundary plate being pivoted together with the yaw bar to the left and right, once the yaw caliper and the restriction plate are matched and locked, the yaw bar and the main frame are fastened together, whereby the parking operation is then completed.

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