Front wheel synchronization mechanism for electrically driven trailer

Abstract

This application discloses a front wheel synchronization mechanism for an electric trailer, comprising: a frame with a pair of front wheel assemblies mounted at its bottom, the front wheel assemblies being hinged to the front end of the frame; a steering synchronization structure disposed at the front end of the frame, between the two front wheel assemblies, including: a main steering rod, the middle of which is hinged to the center of the front end of the frame and capable of rotating horizontally, the main steering rod having a first end and a second end; two side steering rods, each with one end horizontally hinged to the first end of the main steering rod, the other ends of the two side steering rods respectively hinged to the two front wheel assemblies; and a tie rod, longitudinally hinged to the second end of the main steering rod, capable of being fixed to the frame and used to control the rotation of the main steering rod; pulling the tie rod horizontally causes the main steering rod to deflect horizontally, thereby driving the side steering rods to move horizontally, ultimately causing the two front wheel assemblies to deflect synchronously, achieving steering.

Description

Technical Field

[0001] This application relates to the field of electric trailer technology, and in particular to a front wheel synchronization mechanism for electric trailers. Background Technology

[0002] Electric trailers are commonly used in outdoor camping, picnics and other activities for storing, placing and transporting items, providing great convenience for users. Existing electric trailers usually use both electric motor drive and manual push-pull methods to drive the trailer simultaneously or separately.

[0003] The existing problems include the fact that existing electric trailers usually connect the tie rod directly to the frame and lack a steering control mechanism for the vehicle. Some electric trailers with steering synchronization mechanisms have problems such as insufficient steering synchronization accuracy and complex structure. In addition, when the motor drives the trailer to move, there is no locking mechanism for the steering mechanism.

[0004] Based on this, this application aims to disclose an electric trailer synchronization mechanism capable of synchronous steering, and having a locking function for the steering mechanism, in order to solve the above problems.

[0005] The above content is only used to help understand the technical solution of this application and does not represent an admission that the above content is the closest prior art to this application. Summary of the Invention

[0006] Based on this, this application provides a front wheel synchronization mechanism for an electric trailer to solve one of the aforementioned technical problems.

[0007] The technical solution adopted by this application to solve its technical problem is: a front wheel synchronization mechanism for an electric trailer, comprising: a frame, with a pair of front wheel assemblies disposed at its bottom, the front wheel assemblies being hinged to the front end of the frame; a steering synchronization structure disposed at the front end of the frame, between the two front wheel assemblies, including: a main steering rod, the middle of which is hinged to the center of the front end of the frame and capable of rotating in a horizontal direction, the main steering rod including a first end and a second end; two side steering rods, each with one end horizontally hinged to the first end of the main steering rod, the other ends of the two side steering rods respectively hinged to the two front wheel assemblies; a tie rod, longitudinally hinged to the second end of the main steering rod, capable of being fixed to the frame, used to control the rotation of the main steering rod; horizontally pulling the tie rod, the tie rod can drive the main steering rod to deflect horizontally, thereby driving the side steering rods to move horizontally, and finally driving the two front wheel assemblies to deflect synchronously, thereby achieving steering.

[0008] In some embodiments, a mounting block is formed on the front end of the frame, the main steering rod is pivotally connected to the mounting block via a pin, and a rotating seat is provided on the second end of the main steering rod.

[0009] In some embodiments, the pull rod includes a rotatable connecting part and a sliding telescopic part. The rotatable connecting part is hinged to the rotating seat, and the sliding telescopic part is slidably disposed on the rotatable connecting part and is capable of telescoping relative to the rotatable connecting part.

[0010] In some embodiments, a movable sleeve is fixed on the sliding telescopic part, a stationary sleeve is fixed on the rotating connection part, the sliding telescopic part passes through the stationary sleeve and slides on it, the movable sleeve slides on the rotating connection part, and a cam locking member for locking the position of the sliding telescopic part is rotatably mounted on the movable sleeve.

[0011] In some embodiments, a handle is provided at the end of the sliding telescopic part, and an elastic limiting member for fixing the sliding telescopic part and the pull rod is provided at the front end of the frame.

[0012] In some embodiments, a lifting button and a tension spring are coaxially arranged within the mounting block with the pin shaft, and locking pins for locking the main steering rod are formed on both sides of the lifting button, with the locking pins extending from the bottom of the mounting block.

[0013] In some embodiments, a locking portion is formed on the main steering rod, the center of the locking portion being the axis of the main steering rod, and a plurality of locking holes matching the locking pin are formed in a ring on the locking portion.

[0014] In some embodiments, the bottom of the mounting block is provided with a rotating sleeve that can rotate freely. The rotating sleeve has two through holes for the locking pin to pass through, and the rotating sleeve is used to limit the position of the locking pin.

[0015] In some embodiments, the mounting block has a receiving groove at the top and a through hole at the bottom. The lifting button is disposed in the receiving groove, the locking pin is movable in the through hole, and one end of the tension spring is fixed to the top of the mounting block and the other end is fixed to the lifting button.

[0016] In some embodiments, the front wheel assembly includes a locking pedal that can control the locking or unlocking of the front wheel assembly by operating the locking pedal, and the front wheel assembly is provided with a connecting plate to which the side steering rod is hinged.

[0017] The beneficial effects of this application are as follows:

[0018] 1) The main steering rod is deflected by the tie rod, which in turn drives the side steering rod hinged on the main steering rod to move left and right. The side steering rod drives the front wheel assemblies on both sides to deflect synchronously, realizing a high-precision front wheel synchronous steering function. The structure is simple and easy to operate.

[0019] 2) The mounting block is equipped with a mechanism for locking the main steering rod, consisting of a lifting button, a tension spring, and a locking pin. The locking pin is limited by a rotating sleeve. When locking is required, the rotating sleeve is rotated, and under the action of the tension spring, the lifting button and the locking pin fall down, allowing the locking pin to pass through the insertion hole on the rotating sleeve and fall onto the locking part. Finally, the main steering rod is rotated for fine adjustment, so that the locking pin falls into the nearest locking hole, completing the locking of the front wheel synchronization mechanism and preventing the front wheel assembly from deflecting during the movement of the trailer driven by the motor. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional schematic diagram of this application.

[0022] Figure 2 This is a schematic diagram of the front-end component of the vehicle frame in this application.

[0023] Figure 3 This is another perspective of the front-end components of the vehicle frame in this application.

[0024] Figure 4 This is a schematic diagram of the sliding telescopic part of this application.

[0025] Figure 5 This is a schematic diagram of the flexible limiting component of this application.

[0026] Figure 6 This is a schematic diagram of the main steering rod of this application.

[0027] Figure 7 This is a schematic diagram of the top of the mounting block in this application.

[0028] Figure 8 This is a schematic diagram of the bottom of the mounting block in this application.

[0029] Figure 9 This is a cross-sectional schematic diagram of the mounting block in this application.

[0030] Figure 10 This application is Figure 9 Enlarged diagram of point A in the middle.

[0031] Figure 11 This is a schematic diagram of the rotating sleeve of this application.

[0032] Figure 12 This is a schematic diagram of the pull button in this application.

[0033] Explanation of reference numerals: 1. Frame, 2. Front wheel assembly, 201. Locking pedal, 3. Main steering rod, 301. First end, 302. Second end, 303. Locking part, 4. Side steering rod, 5. Tie rod, 501. Rotating connection part, 502. Sliding telescopic part, 6. Mounting block, 7. Rotating seat, 8. Moving sleeve, 9. Stationary sleeve, 10. Grip, 11. Elastic limiter, 12. Cam locking part, 13. Lifting button, 14. Tension spring, 15. Locking pin, 16. Locking hole, 17. Rotating sleeve, 18. Through hole, 19. Receiving groove, 20. Through hole, 21. Connecting plate, 22. Pin, 23. Limiting rod. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. In addition, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those of ordinary skill in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection of this application.

[0035] In the embodiments of this application, please refer to Figure 1-12 As shown, the front wheel synchronization mechanism of the electric trailer mainly includes: a frame 1, with a pair of front wheel assemblies 2 at its bottom, the front wheel assemblies 2 being hinged to the front end of the frame 1; a steering synchronization structure, disposed at the front end of the frame 1, between the two front wheel assemblies 2, including: a main steering rod 3, the middle of which is hinged to the center of the front end of the frame 1, which can rotate in the horizontal direction, the main steering rod 3 including a first end 301 and a second end 302; and two side steering rods 4, each with one end horizontally hinged to the first end of the main steering rod 3. On end 301, the other ends of the two side steering rods 4 are respectively hinged to the two front wheel assemblies 2. Specifically, the two side steering rods 4 are hinged to the top two sides of the second end 302. The tie rod 5 is longitudinally hinged to the second end 302 of the main steering rod 3, and can be fixed to the frame 1 for controlling the rotation of the main steering rod 3. Pulling the tie rod 5 horizontally can cause the main steering rod 3 to deflect horizontally, thereby driving the side steering rods 4 to move horizontally, and finally causing the two front wheel assemblies 2 to deflect synchronously to achieve steering.

[0036] The following will continue to describe some preferred / improved embodiments based on the above embodiments. Any one of the following embodiments can be selected, or multiple embodiments can be combined.

[0037] like Figure 1-3 As shown, a mounting block 6 is formed on the front end of the frame 1, and the main steering rod 3 is pivotally connected to the mounting block 6 via a pin 22. A rotating seat 7 is provided on the second end 302 of the main steering rod 3.

[0038] Specifically, the pull rod 5 includes a rotating connecting part 501 and a sliding telescopic part 502. The rotating connecting part 501 is hinged to the rotating seat 7 and can rotate longitudinally on the rotating seat 7. The sliding telescopic part 502 is slidably disposed on the rotating connecting part 501 and can extend and retract relative to the rotating connecting part 501. The sliding telescopic rod can extend and retract according to actual usage habits and needs, adjust its elongation, and can be locked in this position.

[0039] Furthermore, a movable sleeve 8 is fixed on the sliding telescopic part 502, and a stationary sleeve 9 is fixed on the rotating connection part 501. The sliding telescopic part 502 passes through the stationary sleeve 9 and slides on it. The movable sleeve 8 slides on the rotating connection part 501. A cam locking member 12 for locking the position of the sliding telescopic part 502 is rotatably mounted on the movable sleeve 8. Specifically, the sliding telescopic rod slides relative to the stationary sleeve 9. Except for rotating synchronously with the rotating connection part 501, the position of the stationary sleeve 9 remains fixed.

[0040] like Figure 4-5 As shown, the cam locking member 12, which rotates on the movable sleeve 8, is a cam structure. By rotating the cam locking member 12, the protrusion on it presses against the rotating connecting part 501 that slides inside the movable sleeve 8, thereby locking the position of the sliding telescopic part 502.

[0041] Furthermore, combined with Figure 7 As shown, a handle 10 is provided at the end of the sliding telescopic part 502, and an elastic limiting member 11 for fixing the sliding telescopic part 502 and the pull rod 5 is provided at the front end of the frame 1. The elastic limiting member 11 is composed of two arc-shaped limiting plates with good elasticity, which can deform when the pull rod 5 is pressed into the elastic limiting member 11, and reset after the pull rod 5 is inserted into the elastic limiting member 11, thus fixing the pull rod 5 in the elastic limiting member 11.

[0042] In addition, such as Figure 8 As shown, limiting posts are provided on both sides of the bottom of the fixed block to limit the steering angle.

[0043] In some embodiments, the front wheel assembly 2 includes a locking pedal 201, which can control the locking or unlocking of the front wheel assembly 2 by operating the locking pedal 201. The front wheel assembly 2 is provided with a connecting plate 21, and the side steering rod 4 is hinged to the connecting plate 21.

[0044] like Figure 7-12 As shown, a lifting button 13 and a tension spring 14 are coaxially arranged within the mounting block 6 and the pin 22. Locking pins 15 for locking the main steering rod 3 are formed on both sides of the lifting button 13. The locking pins 15 extend from the bottom of the mounting block 6. Under the restoring force of the tension spring 14, the locking pins 15 can be locked into the locking holes 16, thus locking the main steering rod 3. Although the lifting button 13, tension spring 14, and locking pins 15 are coaxially arranged on the fixed block, they do not interfere with or affect the pivot connection between the main steering rod 3 and the fixed block, nor do they damage the overall connection structure strength. The lifting button 13 is confined to the fixed block and can only move up and down within the fixed block. Furthermore, the connection between the lifting button 13 and the locking pin 15 is stable, and the strength of the locking pin 15 and the lifting button 13 is sufficient to achieve the technical effect of locking the main steering rod 3.

[0045] Furthermore, such as Figure 6 As shown, a locking part 303 is formed on the main steering rod 3, and the center of the locking part 303 is the axis of the main steering rod 3. The main steering rod 3 has a plurality of locking holes 16 that match the locking pin 15 in a ring on the locking part 303. Figure 3 As shown, pin 22 is located at the center of the shaft, and the fixing block is hinged to the main steering rod 3 through pin 22. The fixing block and the main steering rod 3 do not directly contact each other, and there is a gap between them.

[0046] Furthermore, the bottom of the mounting block 6 is provided with a rotating sleeve 17 that can rotate freely. The rotating sleeve 17 has two through holes 18 for the locking pin 15 to pass through. The rotating sleeve 17 is used to limit the position of the locking pin 15. The rotating sleeve 17 is located between the main steering rod 3 and the fixed block. It has holes for the pin shaft 22 to pass through. Similarly, the rotating block will not affect the normal rotation of the main steering rod 3.

[0047] like Figure 7As shown, the mounting block 6 has a receiving groove 19 at its top and a through hole 20 at its bottom. The lifting button 13 is disposed within the receiving groove 19, and the locking pin 15 is movable within the through hole 20. One end of the tension spring 14 is fixed to the top of the mounting block 6, and the other end is fixed to the lifting button 13. The receiving groove 19 is relatively deep, which will not adversely affect the connection strength between the fixing block and the main steering rod 3. When the tension spring 14 is not subjected to external force, it can drive the locking pin 15 on the lifting button 13. Insert the locking pin into the locking hole 16. When unlocking is required, lift the lifting button 13 upwards. The locking pin 15 disengages from the locking hole 16 and is placed inside the rotating sleeve 17. At this time, the tension spring 14 is stretched. Then, operate the rotating sleeve 17 to rotate, so that the insertion hole 18 is misaligned with the locking pin 15, and the bottom of the locking pin 15 abuts against the rotating sleeve 17, thereby unlocking. The main steering rod 3 can rotate freely within the range of the two limit rods 23. It should be noted that the rotation of the rotating sleeve 17 has a certain damping, which can prevent the force when the trailer is moving from causing the rotating sleeve 17 to rotate.

[0048] In use, by operating the pull rod 5 to move left and right, the pull rod 5 drives the main steering rod 3 to deflect left and right. The main steering rod 3, along with the side steering rod 4 at its first end 301, moves horizontally in sync, causing the front wheel assemblies 2 on both sides to deflect synchronously, thus achieving left and right steering. When it is necessary to lock the main steering rod 3, simply manually drive the rotating sleeve 17 to rotate, so that the locking pin 15 passes through the insertion hole 18. At this time, the tension spring 14 resets, and when the restoring force is generated, the locking pin 15 falls into the top of the main steering rod 3. By operating the pull rod 5 to drive the main steering rod 3 to rotate, after the main steering rod 3 is slightly adjusted, the locking pin 15 falls into the nearest locking hole 16, thus achieving locking. It can be determined that the locking pin 15 passes through the insertion hole 18 by the change in the position of the lifting button 13 and the sound of the locking pin 15 hitting the main rotating rod.

[0049] The various embodiments of this application have now been described in detail. To avoid obscuring the concept of this application, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of this application. The foregoing embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A front wheel synchronization mechanism for an electrically powered trailer, characterized in that, include: A frame, at the bottom of which a pair of front wheel assemblies are hinged to the front end of the frame; A steering synchronization structure, disposed at the front end of the frame between the two front wheel assemblies, includes: The main steering rod is hinged at the center of the front end of the vehicle frame and is capable of rotating horizontally. The main steering rod includes a first end and a second end. There are two side steering rods, each with one end horizontally hinged to the first end of the main steering rod, and the other ends of the two side steering rods are respectively hinged to the two front wheel assemblies; A tie rod, longitudinally hinged to the second end of the main steering rod, can be fixed to the vehicle frame and is used to control the rotation of the main steering rod; Pulling the tie rod horizontally causes the main steering rod to deflect horizontally, which in turn drives the side steering rod to move horizontally, ultimately causing the two front wheel assemblies to deflect synchronously, thus achieving steering.

2. The front wheel synchronization mechanism for a motorized trailer according to claim 1, characterized in that, A mounting block is formed on the front end of the vehicle frame, and the main steering rod is pivotally connected to the mounting block via a pin. A rotating seat is provided on the second end of the main steering rod.

3. The front wheel synchronization mechanism for a motorized trailer according to claim 2, wherein The pull rod includes a rotating connecting part and a sliding telescopic part. The rotating connecting part is hinged to the rotating seat, and the sliding telescopic part is slidably disposed on the rotating connecting part and can extend and retract relative to the rotating connecting part.

4. The electrically powered dolly front wheel synchronization mechanism of claim 3, wherein, A movable sleeve is fixed on the sliding telescopic part, and a stationary sleeve is fixed on the rotating connecting part. The sliding telescopic part passes through the stationary sleeve and slides on it. The movable sleeve slides on the rotating connecting part. A cam locking element for locking the position of the sliding telescopic part is rotatably mounted on the movable sleeve.

5. The electrically powered dolly front wheel synchronization mechanism of claim 3, wherein, The sliding telescopic part is provided with a handle at its end, and the front end of the frame is provided with an elastic limiting member for fixing the sliding telescopic part and the pull rod.

6. The electrically powered dolly front wheel synchronization mechanism of claim 2, wherein, A lifting button and a tension spring are coaxially arranged inside the mounting block with the pin shaft. Locking pins for locking the main steering rod are formed on both sides of the lifting button, and the locking pins extend from the bottom of the mounting block.

7. The electrically powered dolly front wheel synchronization mechanism of claim 6, wherein, A locking part is formed on the main steering rod, the center of the locking part is the axis of the main steering rod, and a plurality of locking holes matching the locking pin are formed in a ring on the locking part.

8. The electrically powered dolly front wheel synchronization mechanism of claim 7, wherein, The bottom of the mounting block is provided with a rotating sleeve that can rotate freely. The rotating sleeve has two through holes for the locking pin to pass through. The rotating sleeve is used to limit the position of the locking pin.

9. The electrically powered dolly front wheel synchronization mechanism of claim 6, wherein, The mounting block has a receiving groove at the top and a through hole at the bottom. The lifting button is located in the receiving groove, the locking pin is movable in the through hole, and one end of the tension spring is fixed to the top of the mounting block and the other end is fixed to the lifting button.

10. The electric dolly front wheel synchronization mechanism of claim 1, wherein, The front wheel assembly includes a locking pedal, which can be operated to control the locking or unlocking of the front wheel assembly. The front wheel assembly is provided with a connecting plate, and the side steering rod is hinged to the connecting plate.

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