Folding electric vehicle and its three-level chain mechanism

Abstract

The present invention provides a folding electric vehicle and a three-level interlocking mechanism thereof, wherein the three-level interlocking mechanism comprises a rear fixed frame, a beam and a front fixed frame connected in sequence; the beam comprises a first beam and a second beam; and the three-level interlocking mechanism comprises a first locking assembly, a second locking assembly and a third locking assembly. When the rear fixed frame, the beam and the front fixed frame are folded, the first locking assembly is first unlocked to enable the rear fixed frame and the first beam to be folded. After the rear fixed frame and the first beam are folded, the locking effect of the second locking assembly can be released to enable the first beam and the second beam to be folded. After the first beam and the second beam are folded, the locking effect of the third locking assembly can be released to enable the second beam and the front fixed frame to be folded. The three-level interlocking mechanism prevents the rear fixed frame, the beam and the front fixed frame from being folded at the same time during folding, thereby increasing the difficulty of the folding operation and preventing the electric vehicle owner from being accidentally injured during the folding process.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of electric vehicles, and in particular to a foldable electric vehicle and a three-level interlocking mechanism thereof. Background Art

[0002] Two-wheeled electric vehicles are easy to drive, fast, labor-saving, and cost-effective. They are a convenient means of transportation. Two-wheeled electric vehicles are small and light, suitable for driving on narrow roads and congested roads; thus, they can greatly improve the travel convenience of drivers. In order to improve the convenience of travel, car drivers can place two-wheeled electric vehicles on their cars so that they can be taken out and ridden when needed. Now most two-wheeled electric vehicles have a folding function, which is convenient for carrying and storing two-wheeled electric vehicles. However, when folding electric vehicles on the market, the front wheel, rear wheel and vehicle are usually folded, and the folding can be done at the same time, which makes folding relatively difficult and easy to injure the owner. Summary of the invention

[0003] In order to solve the technical problems raised in the above background technology, the present invention provides a three-level interlocking mechanism.

[0004] The present invention provides a three-level interlocking mechanism, comprising a rear fixing frame, a vehicle beam and a front fixing frame connected in sequence; the vehicle beam comprises a first vehicle beam and a second vehicle beam; the three-level interlocking mechanism comprises:

[0005] A first locking assembly: arranged between the rear fixing frame and the first vehicle beam, used to lock the connection state between the first vehicle beam and the rear fixing frame, and used to limit the locking state of the second locking assembly;

[0006] A second locking assembly: disposed between the first beam and the second beam, used to lock the connection state of the first beam and the second beam, and used to limit the locking state of the third locking assembly; and

[0007] A third locking assembly is arranged between the second vehicle beam and the front fixing frame, and is used to lock the connection state between the second vehicle beam and the front fixing frame.

[0008] Further, the first locking assembly includes a first locking wheel fixedly connected to the rear fixing frame, a first rotating wheel rotatably connected to the first locking wheel, a first locking block arranged in the first locking wheel for locking the rotation of the first rotating wheel, a first limiting groove arranged on an end of the first rotating wheel away from the first locking wheel, a first locking groove arranged in the first rotating wheel and used in conjunction with the first locking block, and an unlocking rotary rod arranged in the rear fixing frame for releasing the locking effect of the first locking block.

[0009] Furthermore, the unlocking rotary rod is provided with a rotary rod unlocking piece; the first locking wheel is provided with a first locking block groove for accommodating the first locking block; in the locked state, the first locking block passes through the first locking block groove and is inserted into the first locking groove.

[0010] Furthermore, the second locking assembly includes a second locking wheel connected to one end of the first beam away from the rear fixed frame, a second rotating wheel rotatably connected to the second locking wheel, a second locking block arranged in the second locking wheel for locking the rotation of the second rotating wheel, a second limiting groove arranged on one end of the second rotating wheel away from the second locking wheel, a second locking groove arranged in the second rotating wheel for use with the second locking block, a second return spring connected to the second locking wheel at one end and the second locking block at the other end, and a second limiting rod fixedly connected to the second locking block; the second limiting rod is connected to the first limiting groove at one end away from the second locking block.

[0011] Furthermore, the second locking wheel is provided with a second locking block groove for accommodating the second locking block; in a locked state, the second locking block passes through the second locking block groove and is inserted into the second locking groove.

[0012] Furthermore, the third locking assembly includes a third locking wheel connected to an end of the second beam away from the first beam, a third rotating wheel rotatably connected to the third locking wheel, a third locking block arranged in the third locking wheel for locking the rotation of the third rotating wheel, a third locking groove arranged in the third rotating wheel and used in conjunction with the third locking block, a third return spring connected to the third locking wheel at one end and the third locking block at the other end, and a third limiting rod fixedly connected to the third locking block; one end of the third limiting rod away from the second locking block is connected to the second limiting groove.

[0013] Furthermore, the third locking wheel is provided with a third locking block groove for accommodating the third locking block; in a locked state, the third locking block passes through the third locking block groove and is inserted into the third locking groove.

[0014] Furthermore, the first limiting groove and the second limiting groove are both provided with limiting groove guide surfaces.

[0015] Furthermore, the first locking block, the second locking block and the third locking block each include a locking insertion portion and a unlocking portion connected to the locking insertion portion.

[0016] The present invention also provides a foldable electric vehicle, which comprises the three-level interlocking mechanism described above.

[0017] By adopting the above technical scheme, the present invention has at least the following beneficial effects: in the present invention, the first locking component, the second locking component and the third locking component are used to limit the locking effect among the rear fixing frame, the vehicle beam and the front fixing frame, so as to adjust the folding or unfolding state among the rear fixing frame, the vehicle beam and the front fixing frame. When it is necessary to fold the rear fixing frame, the vehicle beam and the front fixing frame, the first locking component is first unlocked so that the rear fixing frame and the first vehicle beam can be folded. After the rear fixing frame and the first vehicle beam are folded, the locking effect of the second locking component can be released so that the first vehicle beam and the second vehicle beam can be folded. When the first vehicle beam and the second vehicle beam can be folded, the third locking component can be released. The locking effect of the assembly enables the second beam and the front fixing frame to be folded, one ring after another, thereby preventing the rear fixing frame, the beam and the front fixing frame from being folded at the same time during folding, which increases the difficulty of the folding operation and easily injures the owner of the electric vehicle during the folding process; in addition, the beam includes the first beam and the second beam, so that after folding, the second beam and the rear fixing frame are in a parallel state, and the front fixing frame and the first beam are in a parallel state. Due to the characteristic that the front end of the electric vehicle can be rotated 90 degrees left and right, after folding, the front end of the electric vehicle is rotated 90 degrees relative to the front fixing frame, so that the front wheel set on the front fixing frame can be parallel to the rear wheel after rotation, so that the space occupied by the folded electric vehicle is smaller. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a stereogram of the three-level interlocking mechanism of the present invention.

[0019] Figure 2 The present invention is a three-dimensional diagram of the three-stage interlocking mechanism without the beam.

[0020] Figure 3 The present invention is a three-dimensional diagram of the three-stage interlocking mechanism without the beam, the first rotating wheel, the second rotating wheel and the third rotating wheel.

[0021] Figure 4 Another stereoscopic view of the three-stage interlocking mechanism of the present invention without the vehicle beam, the first rotating wheel, the second rotating wheel and the third rotating wheel.

[0022] Figure 5 It is a stereoscopic view of the first locking wheel of the three-stage interlocking mechanism of the present invention.

[0023] Figure 6 Another stereoscopic view of the first locking wheel of the three-stage interlocking mechanism of the present invention.

[0024] Figure 7 It is a stereoscopic view of the first rotating wheel of the three-stage interlocking mechanism of the present invention.

[0025] Figure 8 It is a schematic diagram of the connection between the first locking block of the three-stage interlocking mechanism of the present invention and the rotary rod unlocking member. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below by specific implementation methods in conjunction with the accompanying drawings. It should be understood that the embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention. Moreover, in the absence of conflict, the features in the embodiments of the present invention can be combined with each other.

[0027] like Figure 1-Figure 8 As shown, the present invention provides a three-level interlocking mechanism, including a rear fixing frame 55, a beam and a front fixing frame 54 connected in sequence; the beam includes a first beam 561 and a second beam 562; the three-level interlocking mechanism includes:

[0028] The first locking assembly 51 is disposed between the rear fixing frame 55 and the first beam 561, and is used to lock the connection state between the first beam 561 and the rear fixing frame 55, and is used to limit the locking state of the second locking assembly 52;

[0029] The second locking assembly 52 is disposed between the first beam 561 and the second beam 562 , and is used to lock the connection state between the first beam 561 and the second beam 562 , and is used to limit the locking state of the third locking assembly 53 ; and

[0030] The third locking assembly 53 is disposed between the second beam 562 and the front fixing frame 54 , and is used to lock the connection state between the second beam 562 and the front fixing frame 54 .

[0031] In this embodiment, the locking effect among the rear fixing frame 55, the vehicle beam and the front fixing frame 54 is limited by the first locking assembly 51, the second locking assembly 52 and the third locking assembly 53, so as to adjust the folding or unfolding state among the rear fixing frame 55, the vehicle beam and the front fixing frame 54. When it is necessary to fold the rear fixing frame 55, the vehicle beam and the front fixing frame 54, the first locking assembly 51 is first unlocked so that the rear fixing frame 55 and the first vehicle beam 561 can be folded. After the rear fixing frame 55 and the first vehicle beam 561 are folded, the locking effect of the second locking assembly 52 can be released so that the first vehicle beam 561 and the second vehicle beam 562 can be folded. When the first vehicle beam 561 and the second vehicle beam 562 can be folded, the locking effect of the third locking assembly 53 can be released so that the second vehicle beam 561 and the second vehicle beam 562 can be folded. 562 and the front fixing frame 54 can be folded, one ring after another, so as to prevent the rear fixing frame 55, the beam and the front fixing frame 54 from being folded at the same time during folding, which makes the folding operation more difficult and easily injures the electric vehicle owner during the folding process; in addition, the beam includes a first beam 561 and a second beam 562, so that after folding, the second beam 562 and the rear fixing frame 55 are in a parallel state, and the front fixing frame 54 and the first beam 561 are in a parallel state. Due to the characteristic that the front end of the electric vehicle can be rotated 90 degrees left and right, after folding, the front end of the electric vehicle is rotated 90 degrees relative to the front fixing frame 54, so that the front wheel set on the front fixing frame 54 after rotation is parallel to the rear wheel, so that the space occupied by the folded electric vehicle is smaller, and it is easier to carry and store compared with the traditional electric vehicle after folding.

[0032] In a specific embodiment, the first locking assembly 51 includes a first locking wheel 511 fixedly connected to the rear fixing frame 55, a first rotating wheel 512 rotatably connected to the first locking wheel 511, a first locking block 513 arranged in the first locking wheel 511 for locking the rotation of the first rotating wheel 512, a first limiting groove 514 arranged on an end of the first rotating wheel 512 away from the first locking wheel 511, a first locking groove 515 arranged in the first rotating wheel 512 for use with the first locking block 513, and an unlocking rotary rod 516 arranged in the rear fixing frame 55 for releasing the locking effect of the first locking block 513; in this embodiment, when the rear fixing frame 55 and the first beam 561 are in a locked state (unfolded), the first locking block 513 is inserted into the first locking groove 515, so that the first rotating wheel 512 and the first locking wheel The rotation state between them is limited, so that the first vehicle beam 561 and the rear fixing frame 55 can remain in the open state. When it is necessary to fold, the unlocking rotary rod 516 only needs to be rotated, and the unlocking rotary rod 516 drives the first locking block 513 to move in the direction away from the first locking groove 515, so that the first locking block 513 leaves the first locking groove 515, so that the first locking wheel 511 and the first rotating wheel 512 can both rotate, so that the rear fixing frame 55 and the first vehicle beam 561 can be folded; in addition, when the first rotating wheel 512 is in the unfolded state, the first limiting groove 514 always maintains a tight effect on the second limiting rod 525, so that the second locking block 523 always remains in the second locking groove, so that when the first locking component 51 is not in contact with the locked state, the second locking component 52 cannot obtain the unlocked state.

[0033] In a specific embodiment, the unlocking rotary rod 516 is provided with a rotary rod unlocking piece 5161; the first locking wheel 511 is provided with a first locking block groove 5111 for accommodating the first locking block 513; when in the locked state, the first locking block 513 passes through the first locking block groove 5111 and is inserted into the first locking groove 515; in this embodiment, when the unlocking rotary rod 516 is rotated, the rotary rod unlocking piece 5161 can push the first locking block 513 to move away from the first locking groove 515, so that the first locking block 513 leaves the first locking groove 515, so that the first locking wheel 511 and the first rotating wheel 512 can both rotate, so that the rear fixed frame 55 and the first car beam 561 can be folded.

[0034] In a specific embodiment, the second locking assembly 52 includes a second locking wheel 521 connected to one end of the first beam 561 away from the rear fixing frame 55, a second rotating wheel 522 rotatably connected to the second locking wheel 521, a second locking block 523 arranged in the second locking wheel 521 for locking the rotation of the second rotating wheel 522, a second limiting groove 526 arranged on one end of the second rotating wheel 522 away from the second locking wheel 521, a second locking groove arranged in the second rotating wheel 522 for use with the second locking block 523, and a second locking groove at one end connected to the second locking wheel The second locking member 521 is connected to a second return spring 524 connected to the second locking block 523 at the other end, and a second limiting rod 525 fixedly connected to the second locking block 523; the second limiting rod 525 is connected to the first limiting groove at one end away from the second locking block 523; in this embodiment, when the first beam 561 and the second beam 562 are not folded, the second return spring 524 is in a compressed state, and when the first locking assembly 51 is unlocked, the first locking wheel 511 and the first rotating wheel 512 rotate relative to each other, at this time, the first limiting groove 514 on the first rotating wheel 512 The second locking block 523 is moved away from the second locking groove under the elastic action of the second return spring 524, so that the second locking block 523 leaves the second locking groove, so that the second locking wheel 521 and the second rotating wheel 522 can rotate, so that the first beam 561 and the second beam 562 can be folded; in addition, when the second rotating wheel 522 is in the unfolded state, the second limiting groove 526 is always The pressing effect on the third limiting rod 535 is maintained, so that the third locking block 533 is always maintained in the third locking groove, so that when the second locking component 52 is not in contact with the locked state, the third locking component 53 cannot obtain the unlocked state; in this embodiment, the structure of the second locking block groove on the second locking wheel 521 is the same as the structure of the first locking block groove 5111 in the first locking wheel 511, so it is not marked in the figure. Similarly, the structure of the second locking groove is the same as the structure of the first locking groove 515 on the first rotating wheel 512, so it is not marked in the figure.

[0035] In a specific embodiment, the second locking wheel 521 is provided with a second locking block 523 groove for accommodating the second locking block 523; when in the locked state, the second locking block 523 passes through the second locking block 523 groove and is inserted into the second locking groove; thereby, when in the locked state, the rotation between the second locking wheel 521 and the second rotating wheel 522 can be prevented, thereby maintaining the stability of the electric vehicle in the unfolded state.

[0036] In a specific embodiment, the third locking assembly 53 includes a third locking wheel 531 connected to one end of the second beam 562 away from the first beam 561, a third rotating wheel 532 rotatably connected to the third locking wheel 531, a third locking block 533 arranged in the third locking wheel 531 for locking the rotation of the third rotating wheel 532, a third locking groove arranged in the third rotating wheel 532 and used in conjunction with the third locking block 533, a third return spring 534 connected to the third locking wheel 531 at one end and the third locking block 533 at the other end, and a third limiting rod 535 fixedly connected to the third locking block 533; one end of the third limiting rod 535 away from the second locking block 523 is connected to the second limiting groove; in this embodiment, when the second beam 562 and the front fixing frame 54 are in an unfolded state, the third return spring 534 is in a compressed state, and when the second locking assembly 52 is unlocked, the second locking The fixed wheel 521 and the second rotating wheel 522 rotate relatively, and the second limiting groove 526 on the second rotating wheel 522 rotates accordingly, thereby slowly releasing the pressing effect on the third limiting rod 535, so that the third limiting rod 535 obtains moving space. At this time, the third locking block 533 moves in a direction away from the third locking groove under the elastic action of the third return spring 534, so that the third locking block 533 leaves the third locking groove, so that the third locking wheel 531 and the third rotating wheel 532 can both rotate, thereby allowing the second vehicle beam 562 and the front fixed frame 54 to be folded. In this embodiment, the structure of the third locking block groove on the third locking wheel 531 is the same as the structure of the first locking block groove 5111 in the first locking wheel 511, so it is not marked in the figure. Similarly, the structure of the third locking groove is the same as the structure of the first locking groove 515 on the first rotating wheel 512, so it is not marked in the figure.

[0037] In a specific embodiment, the third locking wheel 531 is provided with a third locking block 533 groove for accommodating the third locking block 533; when in the locked state, the third locking block 533 passes through the third locking block 533 groove and is inserted into the third locking groove; thereby, when in the locked state, the rotation between the third locking wheel 531 and the third second rotating wheel can be prevented, thereby maintaining the stability of the electric vehicle in the unfolded state.

[0038] In a specific embodiment, the first limiting groove 514 and the second limiting groove 526 are both provided with a limiting groove guide surface; the limiting groove guide surface is inclined in a downward arc shape from a position close to the rear fixed position to a direction away from the rear fixed frame 55, so that the depth of the limiting groove gradually deepens from one end close to the front fixed frame 54 to the end away from the front fixed frame 54, so that when the first rotating wheel 512 or the second rotating wheel 522 is rotated, the second limiting rod 525 or the third limiting rod 535 can obtain space to move toward the rear fixed frame 55, and then the second locking block 523 or the third locking block 533 leaves the second locking groove or the third locking groove under the elastic force of the second return spring 524 or the third return spring 534, thereby unlocking the locking effect of the second locking assembly 52 or the third locking assembly 53.

[0039] In a specific embodiment, the first locking block 513, the second locking block 523 and the third locking block 533 all include a locking block insertion portion 5131 and a unlocking portion 5132 connected to the locking block insertion portion 5131; the unlocking portion 5132 of the first locking block 513 contacts the rotary rod unlocking piece 5161 on the unlocking rotary rod 516, so that when the unlocking rotary rod 516 is rotated, the rotary rod unlocking piece 5161 can drive the locking block insertion portion 5131 to leave the first locking groove 515 through the unlocking portion 5132; the contact locking portion of the second locking block 523 is used to contact the second return spring 524, and the contact locking portion of the third locking block 533 is used to contact the third return spring 534.

[0040] In a specific embodiment, the first locking wheel 511 and the first rotating wheel 512 , the second locking wheel 521 and the second rotating wheel 522 , and the third locking wheel 531 and the third rotating wheel 532 are all rotatably connected via a locking rotating shaft.

[0041] The present invention also provides a foldable electric vehicle, comprising the three-level interlocking mechanism described above, thereby reducing the difficulty of folding the electric vehicle and not easily injuring the electric vehicle owner during the folding process. The folded electric vehicle occupies less space and is more convenient to carry and store.

[0042] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that numerous changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A three-stage interlocking mechanism, comprising a rear fixing frame, a beam and a front fixing frame connected in sequence; characterized in that: The vehicle beam comprises a first vehicle beam and a second vehicle beam; the three-level interlocking mechanism comprises: A first locking assembly: arranged between the rear fixing frame and the first beam, used to lock the connection state between the first beam and the rear fixing frame and to limit the locking state of the second locking assembly; A second locking assembly is disposed between the first beam and the second beam and is used to lock the connection state of the first beam and the second beam and to limit the locking state of the third locking assembly; and A third locking assembly: provided between the second beam and the front fixing frame and used for locking the connection state of the second beam and the front fixing frame; The first locking assembly includes a first locking wheel fixedly connected to the rear fixing frame, a first rotating wheel rotatably connected to the first locking wheel, a first locking block arranged in the first locking wheel for locking the first rotating wheel, a first limiting groove arranged on an end of the first rotating wheel away from the first locking wheel, a first locking groove arranged in the first rotating wheel for use with the first locking block, and an unlocking rotary rod arranged in the rear fixing frame for releasing the locking effect of the first locking block; The unlocking rotary rod is provided with a rotary rod unlocking piece; the first locking wheel is provided with a first locking block groove for accommodating the first locking block; in the locked state, the first locking block passes through the first locking block groove and is inserted into the first locking groove; The second locking assembly includes a second locking wheel connected to one end of the first beam away from the rear fixing frame, a second rotating wheel rotatably connected to the second locking wheel, a second locking block arranged in the second locking wheel for locking the rotation of the second rotating wheel, a second limiting groove arranged on one end of the second rotating wheel away from the second locking wheel, a second locking groove arranged in the second rotating wheel and used in conjunction with the second locking block, a second return spring connected to the second locking wheel at one end and connected to the second locking block at the other end, and a second limiting rod fixedly connected to the second locking block; one end of the second limiting rod away from the second locking block is connected to the first limiting groove; The third locking assembly includes a third locking wheel connected to an end of the second beam away from the first beam, a third rotating wheel rotatably connected to the third locking wheel, a third locking block arranged in the third locking wheel for locking the rotation of the third rotating wheel, a third locking groove arranged in the third rotating wheel and used in conjunction with the third locking block, a third return spring connected to the third locking wheel at one end and connected to the third locking block at the other end, and a third limiting rod fixedly connected to the third locking block; one end of the third limiting rod away from the second locking block is connected to the second limiting groove; The first locking block, the second locking block and the third locking block all include a locking insertion portion and an unlocking portion connected to the locking insertion portion; the unlocking portion of the first locking block contacts with a rotary rod unlocking piece on the unlocking rotary rod, so that when the unlocking rotary rod is rotated, the rotary rod unlocking piece can drive the locking block insertion portion to leave the first locking groove through the unlocking portion; the unlocking portion of the second locking block is used to contact the second return spring, and the unlocking portion of the third locking block is used to contact the third return spring.

2. The three-level interlocking mechanism according to claim 1, characterized in that: The second locking wheel is provided with a second locking block groove for accommodating the second locking block; in the locked state, the second locking block passes through the second locking block groove and is inserted into the second locking groove.

3. The three-level interlocking mechanism according to claim 1, characterized in that: The third locking wheel is provided with a third locking block groove for accommodating the third locking block; in a locked state, the third locking block passes through the third locking block groove and is inserted into the third locking groove.

4. The three-level interlocking mechanism according to claim 1, characterized in that: The first limiting groove and the second limiting groove are both provided with limiting groove guide surfaces.

5. An electric vehicle, characterized in that: The electric vehicle comprises a three-level interlocking mechanism according to any one of claims 1-4.

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