KR20060046801A - Tricycle - Google Patents

Abstract

The present invention discloses a tricycle.

The three-wheeled vehicle according to the present invention includes a steering shaft coupled to a steering wheel which is located in front of the body frame and pivotally supported by a handle post, and a pair of front wheels in which a traveling direction is controlled in conjunction with the steering shaft, in which a saddle is installed. A tricycle comprising a single rear wheel integrally comprising a drive wheel connected to a saddle shaft and a pedal shaft supporting a pedal, and a driven wheel supported by a rear wheel fork connected to a body frame and connected to the drive wheel and a chain, wherein Rotationally supports an extension bar connected to the front of the body frame to which the steering shaft is connected, a transverse bar connected laterally to the end of the extension bar, and a pair of front wheels pivotally supported vertically downward on both ends of the transverse bar. A front wheel support frame provided with left and right front wheel fork, and one end is connected to the steering shaft and the other end is connected to each left and right front fork The ratchet gear is integrally provided on the pedal shaft by interlocking steering means for transmitting the steering force of the steering wheel to the front wheel fork, and selectively reversing the rear wheel in conjunction with the operation force of the reverse prevention lever provided on one side of the steering wheel. And a reverse prevention means provided on one side of the body frame of the ratchet gear and comprising a locking device having a locking pin selectively connected to the ratchet gear by connecting with a reverse prevention lever and a ratchet wire, respectively installed on the left and right front wheel forks. An eccentric lever eccentrically installed on the extension bar by being connected to the caliper brake and the brake distribution wire, a brake lever connected to each end of the eccentric lever with respective brake wires to reduce the speed during driving, and optionally a braking state. It is configured to include a braking means consisting of a parking lever for maintaining or releasing.

The three-wheeled vehicle configured as described above has good steering since a pair of front wheels are disposed forward with respect to the steering shaft and posture control is performed with wires, and the carrier is located above the pair of front wheels, so that even when a heavy load is loaded, There is an advantage that can solve the driving failure caused by the center of gravity is moved to the front of the front wheels.

Tricycle, bicycle, wire, reverse, parking

Description

Tricycle {tricycle}

1 is a side view showing a tricycle according to the present invention;

2 is a conceptual diagram schematically showing a connection state of various wires used in the tricycle according to the present invention;

3 and 4 is a view schematically showing the structure of a front wheel support frame in a tricycle according to the present invention,

5 is an enlarged view of a portion “A” of FIG. 1;

6 and 7 are main views for explaining the operation of the reverse prevention means for the portion "B" of FIG.

8 and 9 are enlarged views showing a portion “C” of FIG. 1.

10 and 11 show another embodiment of a steering means according to the invention.

<Explanation of symbols for the main parts of the drawings>

10: body frame 11: handle post 12: steering shaft

13: saddle shaft 13a: saddle 14: pedal

14a: pedal shaft 15: driving wheel 16: driven wheel

17l, 17r: left and right front wheel 18: rear wheel 20: front wheel support frame

21: extension bar 22: side bar 23: front wheel fork

30: steering means 31: steering wire

33: tension regulator 40: reverse prevention means 41: reverse prevention lever

42: ratchet gear 43: ratchet wire 44: latching device

44a: locking pin 45: elastic body 50: braking means

51 brake 52 brake distribution wire 53 eccentric body

54: braking lever 55: parking lever 54a, 55a: braking wire

The present invention relates to a three-wheeled vehicle having a pair of front wheels and a single driving rear wheel, wherein a pair of front wheels having a carrier is disposed forward from a steering shaft to increase steering underload, thereby stably securing steering stability and driving on a slope road. The present invention relates to a tricycle that can enhance safety and convenience in use by adding a function to prevent skiing and stop flow.

In general, a tricycle is configured to have a total of three wheels by pairing one of the front wheels or the rear wheels, and the stability is increased by using the three-front support structure in the two-point support structure consisting of the front wheel and the rear wheel of the two-wheeled vehicle. It is configured to be.

That is, the three-wheeled vehicle has the advantage of having excellent stability by not falling to the left or right by having one more wheel than the two-wheeled vehicle, and consisting of a single front wheel and a pair of driving rear wheels according to the arrangement of the wheels, and a pair of It is roughly divided into a front wheel and a single driving rear wheel.

Here, the three-wheeled vehicle is a driving method of the transmission of the driving force is generally made in the rear wheels are provided with two front wheels on both front sides, a single rear wheel for receiving the user's pedal operation force is installed in the rear, the front wheels are the driver's steering shaft It is a structure comprised so that it may rotate in the same direction and an angle by operating.

As described above, a conventional tricycle composed of a pair of front wheels and a single rear wheel is disclosed in Korean Patent Laid-Open Publication No. 2001-0038925, which discloses a pair of front wheels and a pedal operation force of a user arranged left and right on a steering axis. A single drive rear wheel is received.

However, the tricycle disclosed in Korean Patent Laid-Open Publication No. 2001-0038925 has a structure in which a carrier for loading a package is attached to the front of an intermediate portion of the steering shaft, or because the pair of front wheels are arranged on a steering shaft, thereby loading heavy loads. In the case of the center of gravity is moved forward has a disadvantage of poor steering.

In addition, the conventional three-wheeled vehicle is pushed backward when the pedal operation force is not applied in driving a slope such as an uphill road, and even when the vehicle is parked on a slope, it moves along the slope by inertia, causing a great safety accident. There was a serious problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the pair of front wheels are arranged forward on the steering axis and steered by wires to increase steering safety and at the same time eliminate steering failure due to the load of the load loaded on the carrier. The purpose is to provide a tricycle.

Another object of the present invention is to provide a backward prevention function that is controlled through a simple operation of a user to prevent driving backwards when driving uphill to improve driving safety.

Still another object of the present invention is to provide a parking brake function operated by a simple operation to increase safety by preventing the tricycle, which has been boarded, from being easily moved by inertia or other external collision.

The tricycle according to an embodiment of the present invention for realizing the above object is a steering shaft coupled to the steering shaft is located in front of the vehicle body frame pivotally supported on the handle post and the direction of travel in conjunction with the steering shaft A pair of front wheels to be controlled, a saddle shaft on which a saddle is installed, a driving wheel connected to a pedal shaft supporting a pedal, and a driven wheel supported by a rear wheel fork connected to a body frame and connected to a driving wheel and a chain. In a tricycle comprising a single rear wheel,

The extension bar connected to the front of the body frame to which the steering shaft is connected, the horizontal bar connected in the transverse direction to the end of the extension bar and a pair of front wheels pivotally supported vertically in the downward direction at both ends of the horizontal bar A front wheel support frame provided with left and right front wheel forks; Steering means for transmitting a steering force of the steering wheel to the front wheel fork by connecting one end to the steering shaft and the other end connected to the left and right front wheel forks; It is provided on one side of the body frame of the ratchet gear and the ratchet gear integrally provided on the pedal shaft by interlocking with the operation force of the reverse prevention lever provided on one side of the steering handle and integrally on the pedal shaft, and the reverse prevention lever and the ratchet. A reverse prevention means composed of a catching device having a catching pin connected to a wire and selectively engaged with the ratchet gear; It is connected to the caliper brakes respectively installed on the left and right front wheel forks, and an eccentric body installed on the extension bar by being connected to the brake and the brake distribution wire, and connected to respective braking wires at one end of the eccentric body to reduce the speed during driving. And braking means comprising a braking lever and a parking lever for selectively maintaining or releasing the braking state.

As a preferable feature of the present invention, the front wheel support frame is provided with a carrier for loading the load on the upper side.

In another preferred aspect of the present invention, the steering means, one end is wound and fixed to the steering shaft several times and the other end is wound and connected several times to each of the left and right current fork to transfer the steering force of the steering wheel to the front wheel fork. A steering wire; It is provided on the steering shaft and the front wheel fork to adjust the tension of the steering wire winding these steering shaft and the left and right current fork, the length adjustment is variable by screwing, and one end of the steering wire includes a tension regulator connected to one end of the steering wire; It is to be configured.

In another preferred aspect of the present invention, the steering means is provided with the chain wheel and integrally connected to the steering shaft and the left and right front wheel fork, respectively, and the chain wheel is integrally connected to the steering force of the steering wheel to the left and right front fork. It is configured to include a steering chain to transmit.

In another preferred aspect of the present invention, the steering means is a pulley which is provided integrally with the steering shaft and the left and right front wheel fork, respectively, and the steering belt to transfer the steering force of the steering wheel to the left and right front fork by connecting these pulleys integrally. It is to be configured to include.

As another preferable feature of the present invention, the locking pin of the reverse preventing means is connected to one end of the ratchet wire is connected to the hinge to be rotated by receiving the operating force to one side, and prevent the reverse receiving the support force of the elastic body installed on one side It is configured to keep the latch on the ratchet gear when the operation of the lever is released.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, the terms or words used in the present specification and claims are consistent with the technical spirit of the present invention based on the principle that the inventor can appropriately define the concept of the term in order to explain the invention in the best way. It must be interpreted as meaning and concept.

Hereinafter, with reference to the accompanying drawings illustrating a preferred embodiment of the tricycle according to the present invention.

1 is a side view showing a tricycle according to the present invention, Figure 2 is a conceptual view for explaining the connection state of various wires used in the tricycle according to the present invention, Figures 3 and 4 is a front wheel support in the tricycle according to the present invention Figure schematically shows the structure of the frame.

FIG. 5 is an enlarged view showing part “A” of FIG. 1, and FIGS. 6 and 7 are main part views for explaining the operation of the backward preventing means for the part “B” of FIG. 1, and FIGS. 8 and FIG. 9 is an enlarged view of portion “C” in FIG. 1.

As shown in the figure, the three-wheeled vehicle according to the present invention has a structure in which a pair of front wheels 17l and 17r are disposed forward with respect to the vehicle body frame 10 and a single driving rear wheel 18 is disposed rearward.

That is, the three-wheeled vehicle of the present invention is provided with a steering shaft 12 in front of the vehicle body frame 10, in which case the steering shaft 12 is pivotable to the handle post (11) coupled to the vehicle body frame (10) The steering wheel 12a is supported and configured to be connected to the steering wheel 12a in the horizontal direction. When the user turns the steering wheel 12a to the left or the right, the steering wheel 12a is integrally rotated. In addition, the rear portion of the steering shaft 12, the middle portion of the body frame 10 is provided with a saddle 13a for the driver to ride, this saddle 13a is provided by the saddle shaft 13 to the body frame ( It is preferable that the structure is connected to 10) and provided with a structure capable of height adjustment.

The lower side of the saddle shaft 13 is composed of a pedal 14 for the user to apply a stepping force, a pedal shaft 14a and a driving wheel 15 for supporting the pedal 14, the body frame 10 The rear wheel 18 is provided with a rear wheel 18 supported by the rear wheel fork 18a. Here, the rear wheel 18 has a structure in which the driven wheel 15 and the driven wheel 16 connected to the chain are integrally provided.

Such a structure is similar to that of a conventional tricycle. However, the present invention is to move the front wheels (17l, 17r) forward from the steering shaft 12 to increase the unloading weight of the carrier 24 while increasing the steering safety and to enable steering in a simple structure, slope driving and parking It is to provide a tricycle with the front wheel support frame 20, the steering means 30 and the reverse prevention means 40 and the braking means 50 to increase the convenience of the city.

The front wheel support frame 20 is for forwardly arranging the left and right front wheels 17l and 17r based on the steering shaft 12, and the extension bar 21 and the horizontal bar 22 which are basically provided in steel or alloy material. ) And front wheel forks 23l and 23r.

Looking at the structure of the front wheel support frame 20, the front of the vehicle frame 10 to which the steering shaft 12 is connected, that is, to the front side of the tricycle on the handle post 11 for pivotally supporting the steering shaft 12 The extension bar 21 protrudes, and the protruding end of the extension bar 21 has a structure in which the horizontal bar 22 is integrally connected by welding or the like in the horizontal direction.

The front wheel forks 23l and 23r are pivotally supported vertically downward at both ends of the horizontal bar 22, and the pivot support structure at this time is the same as the handle post 11 supporting the steering shaft 12. It may be carried out as. Meanwhile, the front wheel forks 23l and 23r serve to support the left and right front wheels 17l and 17r so as to be rotatable, and the caliper brake 51 for braking is installed.

On the other hand, the front wheel support frame 20 is a structure in which the carrier 24 for loading the load on the upper side is fixed by welding or screwing, the extension bar 21 described above to firmly support such a carrier 24 In addition to the side bars 22 and the secondary connection bar (bar) of a plurality of steel or alloy material may be connected by welding or the like.

In addition, in the present invention, but shown in the embodiment that the carrier 24 is attached to the upper side of the front wheel support frame 20, in addition to the use for loading the saddle for carrying infants or people may be provided.

The front wheel support frame 20 configured as described above may be loaded with a heavy load or a person as compared to the conventional tricycle because the carrier 24 is positioned above the steering shaft 12 in a state of being advanced forward.

The steering means 30 is for allowing the user to perform steering by uniformly transmitting steering force when the user rotates the steering wheel 12a to the left and right to the left and right front wheels 17l and 17r, and the steering wire 31 is large. It is a configuration having.

That is, the steering wire 31 is wound and fixed several times on one end of the steering shaft 12, the other end is a structure that is wound and connected several times to each of the left and right front wheel forks (23l, 23r), such as When the steering wheel 12a is rotated to the left or right through the structure, the left and right front wheel forks 23l and 23r connected to the steering shaft 12 and the steering wire 31 are interlocked according to the rotation direction of the steering shaft 12. do.

The steering wire 31 provided as described above has a hook or hook to which the steering wire 31 can be caught at a predetermined position of the body frame 10 or the front wheel support frame 20 to prevent sagging and to restrict the position. It is preferable to provide.

On the other hand, the steering means 30 is provided with a screw member whose length adjustment is variable by screwing to adjust the tension of the steering wire (31) winding the steering shaft 12 and the left and right front wheel forks (23l, 23r) In addition, one end of this screw member may be connected to one end of the steering wire 31, and a tension rebar may be configured on the steering shaft 12 and the left and right front wheel forks 23l and 23r, respectively. In the present invention, the tension regulator 33 using the screw member is proposed, but it may be implemented in various forms as long as it has a technical feature to adjust the tension of the steering wire 31.

The steering means 30 configured as described above has a relatively simple structure that connects the front wheel forks 23l and 23r supporting the left and right front wheels 17l and 17r disposed forward with the steering shaft 12 and the steering wire 31. Through the steering can be carried out by the self-elasticity of the steering wire 31 it is possible to ensure good steering during irregular road running.

Meanwhile, in the present invention, the steering means 30 may be configured as shown in FIGS. 10 and 11 in addition to the steering method using the steering wire 31 described above.

That is, as shown in FIG. 10, the chain wheels 35l and 35r are integrally provided and interlocked at the upper ends of the left and right front wheel forks 23l and 23r, respectively, and the chain wheels 12w are integrally provided and interlocked on the steering shaft. And the steering means comprised by the chain c which connects these chain wheels 35l, 35r, 12w integrally is shown.

The steering means configured as described above is configured to transmit steering force of the steering shaft 12 to the left and right front wheel forks 23l and 23r by the configuration in which the chain wheels 35l, 35r and 12w are connected to the chain c. You lose.

FIG. 11 is a view showing another embodiment of a steering means, and as shown therein, the steering means are integrally provided and interlocked with the steering shaft 12 and the left and right front wheel forks 23l and 23r, respectively. 36l, 36r, and a steering belt (v) for connecting the pulleys (12p, 36l, 36r) integrally to transfer the steering force of the steering wheel (12a) to the left and right front wheel forks (23l, 23r), When the steering shaft 12 is rotated to the left and right by the configuration, the pulleys 12p integrally provided on the steering shaft 12 rotate, and the pulleys 36l and 36r connected by the belt v interlock with each other, resulting in steering. The steering force of the handle 12a is transmitted to the left and right front wheel forks 23l and 23r to make steering.

The backward preventing means 40 serves to prevent backing by inertia in driving an inclined road such as an uphill road, and is provided on one side of the steering wheel 12a to receive a user's manipulation force. A prevention lever 41, a ratchet wire 43 having one end connected to the reverse prevention lever 41 and transmitting an operating force, a locking device 44 which is connected to the other end of the ratchet wire and interlocks with the operation force, and The ratchet gear 42 is integrally provided on the pedal shaft 14a which is one side of the locking device 44.

That is, the reverse prevention lever 41 is a structure fixedly installed on one side of the steering wheel 12a to facilitate the user's operation, and selectively performs only two operations of pulling or releasing the ratchet wire 43. As a lever having such a function, such a lever structure may use a publicly known product that is widely used in general, and thus detailed description thereof will be omitted.

In addition, the catching device 44 connected to the reverse preventing lever 41 and the ratchet wire 43 is provided with a catching pin 44a that is selectively engaged with the ratchet gear 42 to prevent reversal. The pin 44a is a structure that is hinged rotatably on the body frame 10. In addition, the locking pin (44a) is provided with a structure that receives the support force of the elastic body 45 to one side thereof to maintain a state of being latched to the ratchet gear 42 at all times, such an occlusal state is a reverse prevention lever ( It is selectively released or implemented by the operating force of 41).

On the other hand, in the present invention, the latching pin (44a) receiving the operating force of the ratchet gear 42 and the reverse prevention lever 41 and the support force of the elastic body 45 in implementing the reverse prevention means 40, but forward driving It may be implemented in a variety of forms as long as it has a feature that can prevent the reverse.

The reverse prevention means 40 configured as described above may prevent the reverse when the user travels uphill, thereby reducing the risk of a safety accident.

The braking means 50 is to provide a braking force for deceleration and stop while driving, and also to prevent the tricycle from moving easily by inertia or by external force during parking.

The braking means 50 is provided with a brake distribution wire for connecting the caliper brake 51 and the eccentric body, the caliper brake 51 and the eccentric body, and the steering lever 12a. Each of the braking wires 54a and 54b connecting the parking lever 55 to the eccentric body.

That is, the caliper brake 51 is a brake 51 that is widely used in ordinary bicycles or motorcycles, and is composed of two large and small arches in which a brake 51 shoe is mounted in the form of a side pull. Is axially coupled in a state facing the rim (unsigned) of the bicycle and is provided on the left and right front wheel forks (23l, 23r) in a structure in which the elastic support force is applied in a direction in which the brakes (51) shoes are separated from each other by a spring The frictional resistance is used to generate braking force for each of the front wheels 17l and 17r. Since the structure of such a caliper brake 51 is widely used, detailed description is abbreviate | omitted.

In addition, the caliper brake 51 is a structure that is connected to the eccentric body through the braking distribution wire 52, wherein the eccentric body is fixed on the extension bar 21 of the front wheel support frame 20 described above As shown in the drawings, the left end is pivotally coupled to be rotatable, and the above-described braking distribution wire 52 is connected to the center, and one end of each of the braking wires 54a and 54b is connected to the right end. It is a structure that is connected.

In addition, the other ends of the braking wires 54a and 54b have a structure in which the braking lever 54 and the parking lever 55 are connected to each other, and the braking lever 54 can be grasped by a hand commonly seen in two-wheeled vehicles. It is provided in the form that the user can be used at any time when deceleration or stop, the parking lever 55, like the above-described backward prevention lever 41 to selectively perform only two operations to perform or release the user's operating force A conventional lever having a function capable of being used is used.

The braking means 50 configured as described above causes the braking wires 54a and 54b connected to the braking lever 54 to pull one side of the eccentric body when the user operates the braking lever 54 while driving. Tensile force is also applied to the connected braking distribution wire 52 to generate the braking force of the caliper brake 51 on the front wheels 17l and 17r, and when the operating force applied to the braking lever 54 is released, the braking wire 54a, 54b) and the braking force is released because the tension applied to the braking distribution wire 52 is released.

In addition, when the user operates the parking lever 55 for parking after finishing driving, the braking wires 54a and 54b connected to the parking lever 55 pull one side of the eccentric body, and consequently are connected to the eccentric body. A tensile force also acts on the braking distribution wire 52 to generate a braking force. In this case, unlike the brake lever 54, the parking lever 55 selectively performs two operations for implementing or releasing the operating force, so that the braking state is maintained when the user does not apply the operating force for releasing the parking lever 55. do.

On the other hand, the present invention is not limited to the described embodiments, it is apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to belong to the claims of the present invention.

The three-wheeled vehicle constructed and operated as described above has a good steering ability since a pair of front wheels are disposed forward with respect to a steering shaft and posture control is performed with wires, and carriers are located above the pair of front wheels, so that even when a heavy load is loaded, The three-wheeled vehicle has the advantage of eliminating the driving failure caused by the center of gravity is moved to the front of the front wheel.

In addition, since the reverse driving of the rear wheel is forcibly limited by selectively operating the reverse prevention lever provided on one side of the steering wheel, it is possible to prevent the phenomenon of pushing the rear when driving uphill, and likewise provided on the other side of the steering wheel. By selectively operating the parking lever, it is possible to prevent the tricycle from being moved by inertia or by an external force while parked, and as a result, it is possible to increase the convenience and safety of use and at the same time improve the product satisfaction of consumers. It provides a very useful effect that can be augmented.

Claims (6)

A steering shaft which is located in front of the body frame and pivotally supported by a handle post and pivotally coupled to the steering shaft, and a pair of front wheels in which the driving direction is controlled in conjunction with the steering shaft, and the saddle shaft and pedal on which the saddle is installed. In a three-wheeled vehicle comprising a single rear wheel integrally provided with a driving wheel connected to the pedal shaft and a driven wheel connected to the chain and driven by the rear wheel fork connected to the body frame, The extension bar connected to the front of the body frame to which the steering shaft is connected, the horizontal bar connected in the transverse direction to the end of the extension bar and a pair of front wheels pivotally supported vertically in the downward direction at both ends of the horizontal bar A front wheel support frame provided with left and right front wheel forks; Steering means for transmitting a steering force of the steering wheel to the front wheel fork by connecting one end to the steering shaft and the other end connected to the left and right front wheel forks; It is provided on one side of the body frame of the ratchet gear and the ratchet gear integrally provided on the pedal shaft by interlocking with the operation force of the reverse prevention lever provided on one side of the steering handle and integrally on the pedal shaft, and the reverse prevention lever and the ratchet. A reverse prevention means composed of a catching device having a catching pin connected to a wire and selectively engaged with the ratchet gear; It is connected to the caliper brakes respectively installed on the left and right front wheel forks, and the eccentric body installed on the extension bar by being connected to the brake and the brake distribution wire, and connected to the respective braking wires at one end of the eccentric body to reduce the speed during driving. Braking means comprising a braking lever and a parking lever for selectively maintaining or releasing a braking state; Tricycle characterized in that configured to include. 3. The tricycle according to claim 1, wherein the front wheel support frame is provided with a carrier for carrying a load thereon. The method of claim 1, wherein the steering means, A steering wire for transmitting the steering force of the steering wheel to the front wheel fork by winding one end to the steering shaft several times and fixing and connecting the other end to the left and right current forks. It is provided on the steering shaft and the front wheel fork to adjust the tension of the steering wire winding these steering shaft and the left and right current fork, the length adjustment is variable by screwing, and one end of the steering wire includes a tension regulator connected to one end of the steering wire; Tricycle characterized in that configured to. The method of claim 1 or 3, wherein the steering means, And a chain wheel that is integrally provided on the steering shaft and the left and right front wheel fork, respectively, and a steering chain which connects the chain wheels integrally to transmit steering force of the steering wheel to the left and right front wheel fork. . The method of claim 1, wherein the steering means, And a pulley integrally provided at the steering shaft and the left and right front wheel fork, respectively, and a steering belt for connecting the pulleys integrally to transmit steering force of the steering wheel to the left and right front wheel fork. The method of claim 1, wherein the locking pin of the reverse prevention means is hinged to one end of the ratchet wire is connected to one side to be rotated by receiving the operating force, the operation of the reverse prevention lever received by the support force of the elastic body installed on one side Tri-wheeled vehicle characterized in that configured to maintain the latched state on the ratchet gear when released.

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