WO2025214319A1 - Folding wagon having braking function - Google Patents

Abstract

A folding wagon having a braking function, the folding wagon comprising: a folding wagon body (10), wherein the folding wagon body (10) is provided with a directional lever assembly (11) on at least one end thereof; the folding wagon body (10) is further provided with a controller and a battery, the battery being connected to the controller; wheels on at least one end of the folding wagon body (10) are connected to the controller; the end of the folding wagon body (10) provided with the directional lever assembly (11) is connected to pedals (12) in a limited rotation manner; the pedals (12) can rotate within a predetermined angle relative to the folding wagon body (10); a mechanical braking device (13) is provided on one side of each pedal (12), the mechanical braking device (13) is connected to a braking structure of the wheel, and the mechanical braking device (13) rotates relative to the folding wagon body (10); and a seat plate is mounted at the top of the folding wagon body (10). In the above design, the pedals (12) are provided on the folding wagon body (10), which provides footrest positions and reduces uncomfortable sensations, thereby improving the use experience; the mechanical braking device (13) is provided on the side portion of each pedal (12) to ensure the safety of riding; and both the pedal (12) and the mechanical braking device (13) are collapsible, which avoids the occupying of additional space when the folding wagon body (10) is collapsed, thereby improving the practicability.

Description

Folding trailer with brakes Technical Field

The present invention relates to the technical field of trailers, in particular to a folding trailer with brakes.

Background Art

A foldable trailer is a foldable and towable cargo vehicle. It is widely used in transporting things because of its simplicity of use, ability to carry cargo, ease of storage, and time and labor saving. It is now often used in outdoor activities or short-distance transportation.

There are two types of folding trailers on the market. One is an ordinary trailer without power. This type of trailer needs to be towed by people, so it usually does not have a brake structure or only has a simple brake structure on the tires. The second type is powered and can be driven by electricity. This type of trailer usually uses electric brakes, which are unconventional mechanical brakes. Electric brakes control the vehicle speed by adjusting the working mode of the hub motor. Although this method can achieve deceleration, the braking distance is too long and relatively weak, the braking time is long, and it is affected by the hub motor, the braking effect is poor, and the driving safety of the trailer is poor. In addition, the existing folding trailers do not have pedals.

Therefore, it is urgent to design a folding trailer with brakes to overcome the deficiencies of one or more of the above-mentioned prior arts.

Summary of the Invention

The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a folding trailer with brakes, characterized in that it includes: a folding body, the folding body is a folding type or a gathering type body, a steering rod assembly is provided at at least one end of the folding body, the folding body is also provided with a controller and a battery, the battery is connected to the controller, the wheel at at least one end of the folding body is connected to the controller, the end of the folding body provided with the steering rod assembly is also connected to a pedal with limited rotation, the pedal can rotate within a predetermined angle relative to the folding body, a mechanical brake device is also provided on one side of the pedal, the mechanical brake device is connected to the brake structure of the wheel, the mechanical brake device can rotate relative to the folding body to fold or unfold, and the top of the folding body is also detachably mounted with a seat plate.

In a preferred embodiment, there are two footrests, which are respectively arranged on both sides of the folding body, and each footrest includes: a first pedal; one end of the first pedal is connected to the folding body for limited rotation, and the first pedal can be rotated within a predetermined vertical angle relative to the folding body.

In a preferred embodiment, the footrest further comprises: a second pedal rod, which is rotationally connected to an end of the first pedal rod away from the folding vehicle body, and the second pedal rod can rotate within a predetermined lateral angle relative to the first pedal rod.

In a preferred embodiment, a positioning lock pin is further provided on the bottom surface of one end of the second pedal connected to the first pedal, and a lock hole matching the positioning lock pin is opened at one end of the first pedal connected to the second pedal, and there is at least one lock hole. The second pedal is fixed at a predetermined angle through the cooperation between the positioning lock pin and the lock hole.

In a preferred embodiment, a plurality of grooves are further provided at one end of the first pedal rod connected to the second pedal rod, the plurality of grooves are connected to each other, and through holes are further provided at the ends of the grooves.

In a preferred embodiment, the mechanical braking device includes: a brake lever and a mounting member; the brake lever is rotatably connected to the pedal, the mounting member is fixedly connected to the pedal, the mounting member and the pedal are spaced apart, a brake line is provided on the fixing clamp of the mounting member, one end of the brake line is rotatably connected to the brake lever, and the other end is connected to the wheel, and when the brake lever rotates, the brake line is driven to extend or retract, and a reset spring for resetting the brake lever is also connected between the brake lever and the mounting member.

In a preferred embodiment, the end of the brake lever away from the brake line is upwardly tilted, and a groove is provided at the brake lever corresponding to the pedal. A limiting column is provided on the pedal, and the limiting column is located in the groove.

In a preferred embodiment, the folding body has a power output, and a sensor is further provided on the mounting member, wherein the sensor is used to sense the state of the brake lever, and when the brake lever is in a predetermined state, the sensor limits the power output of the folding body.

In a preferred embodiment, a locking lever is rotatably connected to the mounting member, and an elastic member is provided on the mounting member to keep the locking lever in a predetermined state. A locking groove adapted to the locking lever is provided on one end of the brake lever facing the mounting member, and when the brake lever is in a predetermined state, the locking lever is pressed into the locking groove.

The beneficial effects of the present invention are as follows: by providing a footrest on the folding body, a position for the user to step on is provided when riding, reducing the feeling of being cramped, thereby improving the user experience; at the same time, a mechanical brake device is provided on the side of the footrest to ensure the safety of riding; and both the footrest and the mechanical brake device can be folded to avoid taking up extra space when the folding body is folded, thereby improving practicality.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of the present invention;

FIG2 is a schematic structural diagram of a pedal according to the present invention;

FIG3 is a schematic structural diagram of the first pedal of the present invention;

FIG4 is a schematic structural diagram of the brake lever of the present invention;

FIG5 is a schematic structural diagram of a mechanical brake device according to the present invention;

FIG6 is a diagram showing a conventional state of the mechanical brake device of the present invention;

FIG7 is a diagram of the mechanical brake device of the present invention in a braking station state;

FIG8 is a diagram of the present invention in a folded state.

In the picture:

10. Folding body; 11. Steering lever assembly; 12. Pedal; 121. First pedal; 122. Second pedal; 123. Groove; 124. Through hole; 125. Positioning lock pin; 126. Lock hole; 127. Limit column; 13. Mechanical brake device; 131. Brake lever; 132. Mounting part; 133. Brake line; 134. Return spring; 135. Sensor; 136. Locking lever; 137. Elastic member; 138. Groove; 139. Locking groove.

DETAILED DESCRIPTION

To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms, "connection", and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "communication" can be a direct connection or an indirect connection through an intermediate medium. Here, "fixed" means that the two are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of the features.

In the embodiments of the present invention, "and/or" is simply a description of the association relationship between associated objects, indicating that three possible relationships exist. For example, "A and/or B" can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Furthermore, the character "/" in this document generally indicates that the associated objects are in an "or" relationship.

References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present invention. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in other embodiments" appearing at various points in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "comprises," "comprising," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized. The present invention is therefore not limited to the specific embodiments disclosed below.

As shown in Figures 1 to 8, the present invention provides a foldable trailer 12 with brakes, characterized in that it includes: a foldable body 10, the foldable body 10 is a foldable or gatherable body, a steering rod assembly 11 is provided at at least one end of the foldable body 10, the foldable body 10 is further provided with a controller (not shown in the figure) and a battery (not shown in the figure), the battery is connected to the controller, and the wheel at at least one end of the foldable body 10 is connected to the controller, one end of the steering rod assembly 11 of the foldable body 10 is further connected to a pedal 12 for limited rotation, the pedal 12 can rotate within a predetermined angle relative to the foldable body 10, a mechanical brake device 13 is further provided on one side of the pedal 12, the mechanical brake device 13 is connected to the brake structure of the wheel, the mechanical brake device 13 can rotate relative to the foldable body 10, and a seat plate can be detachably installed on the top of the foldable body 10;

Specifically, the folding bicycle body 10 can be a bicycle body that folds in half front to back or a bicycle body that gathers together front to back, left to right, and right to left. The folding bicycle body 10 has power output, and a steering rod assembly 11 is provided on the outside of at least one end of the folding bicycle body 10. The steering rod assembly 11 is connected to the steering wheel at the bottom of the folding bicycle body 10 to control the direction of the steering wheel to control the walking direction of the folding bicycle body 10. A seat plate is provided above the end of the folding bicycle body 10 where the steering rod assembly 11 is provided, and a footrest 12 is provided on the outside of the end of the folding bicycle body 10 where the steering rod assembly 11 is provided. The footrest 12 is rotatably connected to the folding bicycle body 10, and the footrest 12 can rotate within a predetermined angle relative to the folding bicycle body 10 to avoid excessive rotation, and at the same time generate a supporting force in a predetermined state to adapt to the use state and folded state of the folding bicycle body 10. When the folding body 10 is folded, the footrest 12 is rotated and placed upright at the end of the folding body 10. When the folding body 10 is in the unfolded state, the footrest 12 is rotated and placed flat at the end of the folding body 10. When the user sits on the seat, the user can step on the footrest 12 to improve the comfort of use. At the same time, in order to improve the driving safety of the folding body 10, a mechanical brake device 13 is also provided on one side of the footrest 12. At the same time, a mechanical brake structure such as a disc brake or a drum brake is installed on the wheel. The mechanical brake device 13 is connected to the mechanical brake structure on the wheel. When braking is needed, the mechanical brake device 13 can be stepped on to stop the trailer. The mechanical brake device 13 can rotate relative to the folding body 10. When the footrest 12 is in the folded state, the mechanical brake device 13 can also be in the folded state to avoid taking up space when stored.

It should be noted that the direction bar assembly 11 can be switched between a vertical state and a tilted state. The vertical state can be used for riding, etc., and the tilted state can be used for towing.

Furthermore, two footrests 12 are provided, one on each side of the folding body 10, and each footrest 12 includes: a first pedal 121; one end of the first pedal 121 is connected to the folding body 10 for limited rotation, and the first pedal 121 can rotate within a predetermined vertical angle relative to the folding body 10;

Specifically, in this embodiment, two footrests 12 are provided, one on each side of the folding body 10, wherein each footrest 12 includes a first pedal rod 121, which is rotatably connected to the folding body 10, and the first pedal rod 121 can rotate within a predetermined vertical angle relative to the folding body 10, and the mechanical brake device 13 is provided on the side of the first pedal rod 121, and the mechanical brake device 13 rotates with the rotation of the first pedal rod 121, wherein the bottom surface of the first pedal rod 121 is hollowed out to reduce the weight of the first pedal rod 121 and reduce the consumables of the first pedal rod 121, while not affecting the stability of the first pedal rod 121.

Furthermore, in this embodiment, the footrest 12 further includes: a second pedal rod 122, the second pedal rod 122 being rotationally connected to an end of the first pedal rod 121 away from the folding body 10, and the second pedal rod 122 being rotatable relative to the first pedal rod 121 within a predetermined lateral angle;

Specifically, in order to enhance the user experience, the footrest 12 also includes a second pedal rod 122. To adapt to the usage habits of most people, one end of the second pedal rod 122 is rotatably connected to the first pedal rod 121, and the second pedal rod 122 can rotate laterally relative to the first pedal rod 121, wherein the direction of rotation of the second pedal rod 122 is toward the direction of the other second pedal rod 122, and the rotation of the second pedal rod 122 can also avoid conflict with the direction rod assembly 11 when the folding body 10 is folded. When folding is required, the second pedal rod 122 can be rotated so that it is in a straight line with the first pedal rod 121. At this time, even if the two sides move closer to the middle when the folding body 10 is folded, the second pedal rod 122 will not conflict with the direction rod assembly 11.

Furthermore, in this embodiment, a positioning lock pin 125 is further provided on the bottom surface of one end of the second pedal 122 connected to the first pedal 121, and a lock hole 126 is provided on one end of the first pedal 121 connected to the second pedal 122 to match the positioning lock pin 125. There is at least one lock hole 126, and the second pedal 122 is fixed at a predetermined angle by the cooperation between the positioning lock pin 125 and the lock hole 126.

Specifically, in order to prevent the second pedal rod 122 from rotating freely relative to the first pedal rod 121, a positioning lock pin 125 is fixedly installed on the bottom surface of the second pedal rod 122, and a lock hole 126 is opened on the end surface of the first pedal rod 121 and the second pedal rod 122. There are two lock holes 126, one for making the second pedal rod 122 and the first pedal rod 121 in a straight state, and the other for making the second pedal rod 122 and the first pedal rod 121 in an inclined state. The cooperation between 125 and the lock hole 126 fixes the second pedal rod 122 in any state and restricts its movement. The positioning lock pin 125 has a spring inside. The second pedal rod 122 is provided with a plurality of leakage holes at one end away from the first pedal rod 121. Since the soles of shoes usually have anti-slip grooves, when stepping on the second pedal rod 122, part of the anti-slip grooves can be embedded in the leakage holes, increasing friction and improving the anti-slip effect. The leakage holes can also prevent dust and mud on the soles of shoes from accumulating on the second pedal rod 122.

Furthermore, in this embodiment, a plurality of grooves 123 are further provided at one end where the first pedal rod 121 and the second pedal rod 122 are connected. The plurality of grooves 123 are connected to each other, and a through hole 124 is further provided at the end of the groove 123.

Specifically, since the first pedal rod 121 is also within the range of the foot when the user steps on the pedal 12, in order to prevent dust and mud from falling into the connection between the first pedal rod 121 and the second pedal rod 122 and affecting the rotation of the first pedal rod 121 and the second pedal rod 122, a plurality of grooves 123 are further provided at the connection between the first pedal rod 121 and the second pedal rod 122. The plurality of grooves 123 are arranged at intervals and are interconnected. At the same time, a through hole 124 is further provided at one end of the groove 123. The through hole 124 passes through the first pedal rod 121. The function of the groove 123 is to allow water and mud to flow along a predetermined path, and the through hole 124 is used to allow water and mud to flow out of the first pedal rod 121 to avoid accumulation.

Furthermore, in this embodiment, the mechanical brake device 13 includes: a brake lever 131 and a mounting member 132; the brake lever 131 is rotationally connected to the pedal 12, the mounting member 132 is fixedly connected to the pedal 12, the mounting member 132 is spaced apart from the pedal 12, a brake line 133 is fixedly clamped on the mounting member 132, one end of the brake line 133 is rotationally connected to the brake lever 131, and the other end is connected to the wheel, and when the brake lever 131 rotates, the brake line 133 is driven to extend or retract, and a reset spring 134 is also connected between the brake lever 131 and the mounting member 132 for resetting the brake lever 131.

When the brake lever 131 is in the braking state, the return spring 134 is stretched, and when the brake lever 131 loses the external force, the return spring 134 pulls the brake lever 131 to reset itself.

Furthermore, in this embodiment, the end of the brake lever 131 away from the brake line 133 is upwardly tilted, and a groove 138 is provided at a position of the brake lever 131 corresponding to the pedal 12. A limiting post 127 is provided on the pedal 12, and the limiting post 127 is located in the groove 138.

Specifically, the end of the brake lever 131 away from the brake line 133 is in an upwardly extending tilted shape, so that the brake lever 131 protrudes from the top plane of the first pedal 121 and the second pedal 122, so that the user has a certain travel before stepping on the brake lever 131 to be restricted by the first pedal 121 for braking. Preferably, the end adjacent to the mounting member 132 is also in an upwardly extending tilted shape, which is convenient for pulling out the brake line 133 and does not cause friction between the brake line 133 and the mounting member 132; and to prevent excessive rotation of the brake lever 131, a groove 138 is further meandered on the brake lever 131, and a limiting post 127 is provided at a predetermined position of the first pedal 121. The limiting post 127 cooperates with the groove 138 to limit the maximum rotation angle of the brake lever 131.

Furthermore, in this embodiment, the foldable body 10 has a power output, and the mounting member 132 is further provided with a sensor 135, which is used to sense the state of the brake lever 131. When the brake lever 131 is in a predetermined state, the sensor 135 limits the power output of the foldable body 10;

Specifically, since the folding body 10 of this embodiment has power output, in order to avoid outputting power while stepping on the brakes, a sensor 135 is further provided on the mounting member 132. The sensor 135 is connected to the power output controller of the folding body 10. The sensor 135 cooperates with the brake lever 131. When the brake lever 131 is in the braking state, the sensor 135 will be triggered. The sensor 135 will send the trigger information to the controller, and the controller will stop the power output, thereby avoiding the situation where the brake is in the braking state and the power is still being output.

It should be noted that since the brake lever 131 has a movement stroke, the movement stroke corresponds to the braking force, that is, the greater the movement stroke of the brake lever 131, the greater the braking force. In order to avoid triggering the sensor 135 even when the brake lever 131 is in a low stroke state, the trigger value of the sensor 135 can be adjusted, for example, the sensor 135 can be triggered at the maximum movement stroke or when it enters the last one-third of the stroke, which can be adjusted according to actual usage requirements.

Furthermore, in this embodiment, a locking lever 136 is rotatably connected to the mounting member 132. The mounting member 132 is also provided with an elastic member 137 for keeping the locking lever 136 in a predetermined state. The brake lever 131 is also provided with a locking groove 139 on one end thereof facing the mounting member 132, which is adapted to the locking lever 136. When the brake lever 131 is in the predetermined state, the locking lever 136 is pressed against the locking groove 139.

Specifically, in order to prevent the folding body 10 from sliding when in the parking state, a locking lever 136 is rotatably connected to the mounting member, and a locking groove 139 is provided on one end of the brake lever 131 adjacent to the mounting member 132, wherein the locking lever 136 is located within the movement range of the brake lever 131. When the brake lever 131 is at its maximum travel in the braking state, the brake lever 131 will push up the locking lever 136 and make the end of the locking lever 136 press against the locking groove 139, thereby limiting the movement of the folding body 10. The brake lever 131 is reset to achieve permanent braking. At the same time, an elastic member 137 is connected to the locking lever 136. The elastic member 137 is used to provide a force to the locking lever 136 so that it is always in a coordinated state with the brake lever 131 to avoid disengagement due to vibration. When the permanent braking needs to be released, the locking lever 136 can be pressed to lift it. At this time, the brake lever 131 loses the restriction of the locking lever 136 and resets itself under the action of the reset spring 134.

In summary, the present application provides a footrest 12 on the folding body 10 to provide the user with a place to step on when riding, reducing the feeling of being cramped, thereby improving the user experience. At the same time, a mechanical brake device 13 is provided on the side of the footrest 12 to ensure the safety of riding. Both the footrest 12 and the mechanical brake device 13 can be folded to avoid occupying additional space when the folding body 10 is folded, thereby improving practicality.

The present invention is not limited to what is described in the specification and embodiments, and additional advantages and modifications will be readily apparent to those skilled in the art. Therefore, the present invention is not limited to the specific details, representative devices, and illustrative examples shown and described herein without departing from the spirit and scope of the general concept defined by the claims and their equivalents.

Claims (9)

A folding trailer with brakes, characterized in that it includes: a folding body, the folding body is a folding type or a gathering type body, a steering rod assembly is provided at at least one end of the folding body, the folding body is also provided with a controller and a battery, the battery is connected to the controller, and the wheel at at least one end of the folding body is connected to the controller, the end of the folding body provided with the steering rod assembly is also connected to a pedal with limited rotation, the pedal can rotate within a predetermined angle relative to the folding body, a mechanical brake device is also provided on one side of the pedal, the mechanical brake device is connected to the brake structure of the wheel, the mechanical brake device can rotate relative to the folding body to fold or unfold, and the top of the folding body is also detachably mounted with a seat plate. The folding trailer with brakes according to claim 1 is characterized in that there are two footrests, which are respectively arranged on both sides of the folding body, and each footrest includes: a first pedal; one end of the first pedal is connected to the folding body for limited rotation, and the first pedal can be rotated within a predetermined vertical angle relative to the folding body. The folding trailer with brakes according to claim 2 is characterized in that the footrest further includes: a second pedal rod, the second pedal rod is connected to the first pedal rod at an end away from the folding body and is rotationally limited, and the second pedal rod can rotate within a predetermined lateral angle relative to the first pedal rod. The folding trailer with brakes according to claim 3 is characterized in that a positioning lock pin is further provided on the bottom surface of one end of the second pedal connected to the first pedal, a lock hole matching the positioning lock pin is opened at one end of the first pedal connected to the second pedal, and at least one lock hole is provided, and the second pedal is fixed at a predetermined angle through the cooperation between the positioning lock pin and the lock hole. The folding trailer with brakes according to claim 3 is characterized in that a plurality of grooves are further provided at one end where the first pedal is connected to the second pedal, the plurality of grooves are connected, and through holes are further provided at the ends of the grooves. The folding trailer with brakes according to claim 1 is characterized in that the mechanical braking device includes: a brake lever and a mounting member; the brake lever is rotatably connected to the pedal, the mounting member is fixedly connected to the pedal, the mounting member and the pedal are spaced apart, a brake line is provided on the fixing clamp of the mounting member, one end of the brake line is rotatably connected to the brake lever, and the other end is connected to the wheel, the brake lever drives the brake line to extend or retract when it rotates, and a reset spring for resetting the brake lever is also connected between the brake lever and the mounting member. The folding trailer with brakes according to claim 6 is characterized in that the end of the brake lever away from the brake line is upwardly tilted, a groove is provided at the position corresponding to the brake lever and the foot pedal, and a limiting column is provided on the foot pedal, and the limiting column is located in the groove. The folding trailer with brakes according to claim 6 is characterized in that a sensor is further provided on the mounting member, the sensor is connected to the controller, the sensor is used to sense the state of the brake lever, and when the brake lever is in a predetermined state, the sensor limits the power output of the folding body. The folding trailer with brakes according to claim 6 is characterized in that a locking lever is rotatably connected to the mounting member, and an elastic member is provided on the mounting member to keep the locking lever in a predetermined state. A locking groove adapted to the locking lever is also provided on one end of the brake lever facing the mounting member, and when the brake lever is in a predetermined state, the locking lever is pressed into the locking groove.