Electronically controlled rotating arm locking device and automatic folding vehicle

Abstract

The present invention discloses an electrically controlled rotating arm locking device and an automatic folding vehicle, wherein the electrically controlled rotating arm locking device comprises a first rotating arm and a second rotating arm which are rotatably connected, wherein the first rotating arm is provided with a first locking mechanism, wherein the first locking mechanism comprises a first rotating member and a second rotating member; wherein the second rotating arm is fixedly provided with a third rotating member; and wherein the second rotating arm is provided with a second locking mechanism, wherein the second locking mechanism cooperates with the second rotating member to lock or unlock the first rotating arm and the second rotating arm. The present invention utilizes the first rotating member provided in the first rotating arm to cooperate with the third rotating member provided in the second rotating arm to achieve port docking of the first rotating arm and the second rotating arm, and then utilizes the second rotating member of the first rotating arm to cooperate with the second locking mechanism in the second rotating arm to perform the locking action, and by dividing the rotating arm locking process into the corresponding structures of the two steps of docking and locking, the stability of locking between the locking arms and the flexibility of unlocking can be ensured.

Description

Technical Field

[0001] The invention relates to the technical field of rotating arm control, and in particular to an electric-controlled rotating arm locking device and an automatic folding vehicle. Background Art

[0002] In daily life and production, it is often necessary to fix and lock the two rotating arms so that the rotating arms have high stability when locked and a large rotation angle when unlocked to meet the requirements of flexibility and stability of the rotating arm control. For example, when an automatic folding bicycle is folding its frame.

[0003] However, the existing rotating arm locking device usually adopts manual operation, which is inefficient and time-consuming. If an electric control connecting rod mechanism is adopted, its structure is complex, large in size, unsightly, the motor power output is not stable and it is difficult to achieve large angle rotation. If a worm and worm gear rotating arm is adopted, the rotating arm will shake due to the meshing gap, and the output torque of the rotating arm is limited due to the strength of the meshing teeth of the worm and worm gear. Therefore, how to improve the locking stability and unlocking flexibility of the two rotating arms is a technical problem that needs to be solved urgently.

[0004] The above contents are only used to assist in understanding the technical solution of the present invention and do not constitute an admission that the above contents are prior art. Summary of the invention

[0005] The main purpose of the present invention is to provide an electrically controlled rotating arm locking device and an automatic folding vehicle, aiming to solve the technical problems of the existing rotating arm control method in terms of low locking stability and low unlocking flexibility.

[0006] To achieve the above object, the present invention provides an electrically controlled rotating arm locking device, comprising a first rotating arm and a second rotating arm, wherein the first rotating arm is provided with a first cavity, and the second rotating arm is provided with a second cavity; wherein:

[0007] The first cavity is provided with a locking drive device and a first locking mechanism, the first locking mechanism includes a first rotating member and a second rotating member, and the locking drive device drives the first rotating member and the second rotating member to perform a rotation action;

[0008] The second rotating arm is fixedly provided with a third rotating member, and the third rotating member cooperates with the rotating action of the first rotating member to drive the second rotating arm to rotate and butt the end surfaces of the first rotating arm and the second rotating arm;

[0009] The second cavity is provided with a second locking mechanism, which cooperates with the second rotating member to lock the first rotating arm and the second rotating arm when the electric-controlled rotating arm locking device is docked, and to unlock the first rotating arm and the second rotating arm when the electric-controlled rotating arm locking device is folded.

[0010] In the present invention, the first rotating member provided in the first rotating arm cooperates with the third rotating member provided in the second rotating arm to realize the docking or folding of the first rotating arm and the second rotating arm, and then the second rotating member of the first rotating arm cooperates with the second locking mechanism in the second rotating arm to perform the locking action or the unlocking action, thereby ensuring the flexibility and stability of the locking device.

[0011] Optionally, the first rotating member is a worm, and the second rotating member is a screw, and the worm is arranged on the screw, and when the locking drive device controls the screw to perform a first rotation action, the worm follows the screw to perform a second rotation action.

[0012] In the present invention, a worm is utilized to rotate following the screw, so that when the screw performs a first rotation, the worm performs a second rotation action, thereby realizing the docking and locking process. The rotation of the two components is driven by a driving device to complete the realization of the two actions, thereby simplifying the structure of the locking device.

[0013] Optionally, the third rotating member is a worm wheel, which is meshed with the worm, and the worm wheel follows the second rotation action of the worm to perform a third rotation action to drive the second rotating arm to rotate.

[0014] In the present invention, the worm wheel follows the rotation of the worm, so that when the worm performs the second rotation action, the worm wheel performs the third rotation action, thereby realizing the docking and locking process. The rotation of the two parts is driven by a driving device to complete the realization of the two actions, thereby simplifying the structure of the locking device.

[0015] Optionally, a first protrusion is provided in the first cavity, and the first locking mechanism further includes a worm stopper, which is arranged on one side of the first protrusion to offset the reaction force applied by the worm wheel to the worm when the electric-controlled rotating arm locking device is docked.

[0016] In the present invention, the first protrusion is provided to block the movement of the worm stopper, thereby offsetting the reaction force applied by the worm wheel to the worm, optimizing the force structure and improving the stability of the electric-controlled rotary locking device.

[0017] Optionally, the first cavity is provided with a second protrusion, wherein:

[0018] The first locking mechanism further comprises a worm sleeve, the worm sleeve is connected to the worm sleeve; the worm sleeve is provided with a worm sleeve stopper, and the worm sleeve stopper is arranged on one side of the second protrusion;

[0019] A pulley is provided at the end of the second rotating arm. When the electric-controlled rotating arm locking device is unlocked, the pulley contacts the worm sleeve stopper to fix the position of the second rotating arm.

[0020] In the present invention, by providing a pulley, when the electric-controlled rotating arm locking device is unlocked, the position of the second rotating arm is fixed to prevent the second rotating arm from performing a rotation action when it is not unlocked.

[0021] Optionally, the pulley is a D-type pulley, and the straight surface of the D-type pulley is arranged parallel to the second rotating arm, so that after the end surfaces of the first rotating arm and the second rotating arm are connected, the worm sleeve moves left and right in the straight surface space of the D-type pulley following the rotation of the worm.

[0022] In the present invention, by arranging the D-type pulley, after the end faces of the first rotating arm and the second rotating arm are butted, a space for the worm sleeve to move left and right is formed on the straight surface of the D-type pulley, which is convenient for unlocking.

[0023] Optionally, the second locking mechanism is a nut, and when the electrically-controlled rotating arm locking device is docked, the screw engages with the nut to lock the first rotating arm and the second rotating arm, and when the electrically-controlled rotating arm locking device is folded, the screw separates from the nut to unlock the first rotating arm and the second rotating arm.

[0024] In the present invention, a nut is arranged in the second rotating arm to cooperate with a screw in the first rotating arm to perform locking and unlocking actions, thereby improving the stability of the locking device.

[0025] Optionally, a spring is provided in the second cavity, and the spring is in contact with the second locking mechanism, and provides a force in the direction of the second rotating member for the second locking mechanism when the electric-controlled rotating arm locking device is docked.

[0026] In the present invention, by arranging a spring in the second cavity, a force in the direction of the second rotating member is provided to the second locking mechanism during docking, thereby facilitating the engagement of the second locking mechanism and the second rotating member and improving the engagement stability.

[0027] Optionally, the electrically-controlled rotating arm locking device further comprises a dust cover disposed outside the electrically-controlled rotating arm locking device, wherein the dust cover matches the shape of the electrically-controlled rotating arm locking device.

[0028] In the present invention, a dust cover is arranged outside the electric-controlled rotating arm locking device, and a shape-matching structure is arranged at the pulley of the dust cover to facilitate the movement of the pulley when the electric-controlled rotating arm locking device is folded or docked.

[0029] In addition, in order to achieve the above-mentioned purpose, the present invention also provides an automatic folding vehicle, which includes the electric-controlled rotating arm locking device as described above.

[0030] In the present invention, the electrically controlled rotating arm locking device comprises a first rotating arm and a second rotating arm, wherein the first rotating arm is provided with a first locking mechanism, and the first locking mechanism comprises a first rotating member and a second rotating member; the second rotating arm is fixedly provided with a third rotating member; the second rotating arm is provided with a second locking mechanism, and the second locking mechanism cooperates with the second rotating member to lock the first rotating arm and the second rotating arm. The present invention utilizes the first rotating member provided in the first rotating arm to cooperate with the third rotating member provided in the second rotating arm to achieve the port docking of the first rotating arm and the second rotating arm, and then utilizes the second rotating member of the first rotating arm to cooperate with the second locking mechanism in the second rotating arm to perform the locking action, and by dividing the rotating arm locking process into the corresponding structures of the two steps of docking and locking, the stability of locking between the locking arms and the flexibility of unlocking can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0032] Figure 1 It is a structural schematic diagram of the electric-controlled rotating arm locking device of the present invention;

[0033] Figure 2 It is a structural schematic diagram of the docking of the electric-controlled rotating arm locking device in the present invention;

[0034] Figure 3 It is a structural schematic diagram of the locking of the electric-controlled rotating arm locking device in the present invention;

[0035] Figure 4 It is a schematic diagram of the structure of the dust cover in the present invention.

[0036] Description of Figure Numbers:

[0037]

[0038]

[0039] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0040] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0041] In daily life and production, it is often necessary to fix and lock the two rotating arms so that the rotating arms have high stability when locked and a large rotation angle when unlocked to meet the requirements of flexibility and stability of the rotating arm control. For example, when an automatic folding bicycle is folding its frame.

[0042] However, the existing rotating arm locking device usually adopts manual operation, which is inefficient and time-consuming. If an electric control connecting rod mechanism is adopted, its structure is complex, large in size, unsightly, the motor power output is not stable and it is difficult to achieve large angle rotation. If a worm and worm gear rotating arm is adopted, the rotating arm will shake due to the meshing gap, and the output torque of the rotating arm is limited due to the strength of the meshing teeth of the worm and worm gear. Therefore, how to improve the locking stability and unlocking flexibility of the two rotating arms is a technical problem that needs to be solved urgently.

[0043] In order to solve this problem, various embodiments of the electric-controlled rotating arm locking device of the present invention are proposed. The electric-controlled rotating arm locking device provided by the present invention realizes the docking of the ports of the first rotating arm and the second rotating arm by cooperating with the first rotating member provided in the first rotating arm and the third rotating member provided in the second rotating arm, and then uses the second rotating member of the first rotating arm to cooperate with the second locking mechanism in the second rotating arm to perform the locking action. By dividing the rotating arm locking process into two steps of docking and locking, the corresponding structures are executed, which can ensure the stability of locking between the locking arms and the flexibility of unlocking.

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0046] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0047] Reference Figure 1 , Figure 1 It is a schematic structural diagram of the electric-controlled rotating arm locking device of the present invention.

[0048] like Figure 1 As shown, in the embodiment, the electrically controlled rotating arm locking device comprises: a first rotating arm 1 and a second rotating arm 2 which are rotatably connected, the first rotating arm 1 is provided with a first cavity, and the second rotating arm 2 is provided with a second cavity.

[0049] Specifically, the first cavity is provided with a locking drive device 3 and a first locking mechanism, the first locking mechanism includes a first rotating member 4 and a second rotating member 5, the locking drive device 3 is connected to the first rotating member, and drives the first rotating member 4 and the second rotating member 5 arranged on the first rotating member to perform a rotation action.

[0050] It is easy to understand that the first rotating member 4 can be a worm, the second rotating member 5 is a screw, the worm is arranged on the screw, and the locking drive device 3 is a reduction motor. When the reduction motor controls the screw to perform the first rotation action, the worm follows the screw to perform the second rotation action.

[0051] The second rotating arm 2 is fixedly provided with a third rotating part 6, and the third rotating part 6 cooperates with the rotation of the first rotating part 4 to drive the second rotating arm 2 to rotate and dock the first rotating arm 1 and the second rotating arm 2; the second cavity is provided with a second locking mechanism 7, and the second locking mechanism 7 cooperates with the second rotating part 5 to lock the first rotating arm 1 and the second rotating arm 2 when the electric-controlled rotating arm locking device is docked, and unlock the first rotating arm 1 and the second rotating arm 2 when the electric-controlled rotating arm locking device is folded.

[0052] It is easy to understand that the third rotating member 6 is a worm wheel, which meshes with the worm, and the worm wheel follows the second rotation action of the worm, performs the third rotation action, and drives the second rotating arm 2 to rotate. In this embodiment, the worm follows the rotation of the screw, so that when the screw performs the first rotation, the worm performs the second rotation action, thereby realizing the docking and locking process, and the rotation of the two components is driven by one driving device to complete the realization of the two actions, thereby simplifying the structure of the locking device.

[0053] It is easy to understand that in order to realize the end-to-end docking action of the first rotating arm 1 and the second rotating arm 2, a first protrusion is provided in the first cavity, and the first locking mechanism also includes a worm stopper 8, which is arranged on one side of the first protrusion. When the electric-controlled rotating arm locking device is docked, the reaction force applied to the worm when the worm wheel follows the worm to perform the third rotation action is offset.

[0054] It is easy to understand that in order to realize the end-to-end docking action of the first rotating arm 1 and the second rotating arm 2, the first cavity is provided with a second protrusion, wherein: the first locking mechanism also includes a worm sleeve 9, the worm sleeve 9 is connected to the worm sleeve, and the worm sleeve 9 can slide left and right in the first cavity of the first rotating arm 1 within a limited range; the worm sleeve is provided with a worm sleeve stopper 10, and the worm sleeve stopper 10 is arranged on one side of the second protrusion; a pulley is provided at the end of the second rotating arm 2, and when the electric-controlled rotating arm locking device is unlocked, the pulley contacts the worm sleeve stopper to fix the position of the second rotating arm.

[0055] Furthermore, the pulley is a D-type pulley, and the straight surface of the D-type pulley is arranged parallel to the second rotating arm 2, so that after the end surfaces of the first rotating arm 1 and the second rotating arm 2 are connected, the worm sleeve 9 moves left and right in the straight surface space of the D-type pulley following the rotation of the worm. In this embodiment, by setting the D-type pulley, after the end surfaces of the first rotating arm and the second rotating arm are connected, a space for the worm sleeve to move left and right is formed on the straight surface of the D-type pulley, which is convenient for unlocking.

[0056] In another embodiment, the second locking mechanism 7 is a nut. When the electric-controlled rotating arm locking device is docked, the screw and the nut engage to lock the first rotating arm 1 and the second rotating arm 2. When the electric-controlled rotating arm locking device is folded, the screw and the nut separate to unlock the first rotating arm and the second rotating arm.

[0057] It should be noted that a spring 12 may also be provided in the second cavity, and the spring 12 is in contact with the second locking mechanism 7. When the electric-controlled rotating arm locking device is docked, the spring 12 provides a force in the direction of the second rotating part for the second locking mechanism, thereby improving the meshing effect between the second locking mechanism 7 and the second rotating part 5.

[0058] Working principle of the electric controlled rotating arm locking device:

[0059] When performing docking actions, such as Figure 1 As shown, the reduction motor rotates clockwise and drives the screw to rotate. At this time, the worm wheel rotates clockwise, so the second rotating arm 2 rotates clockwise. At this time, the worm receives a reverse force to the right from the worm wheel, and the worm tends to slide from right to left or right. At this time, in order to maintain the position of the worm, the supporting force of the first rotating arm 1 on the worm stopper 8 can be used to offset the sliding tendency of the worm. At the same time, the reaction force of the worm sleeve 9 stopper and the arc surface of the D-type pulley is used to offset the sliding tendency of the worm, thereby controlling the second rotating arm 2 to rotate only clockwise, so that the end face of the second rotating arm 2 rotates in the direction where the end face of the first rotating arm 1 coincides.

[0060] like Figure 2 As shown, the reduction motor continues to rotate clockwise, and when the first rotating arm 1 and the second rotating arm 2 overlap horizontally, the second rotating arm 2 cannot rotate, that is, the worm wheel does not rotate. At this time, the straight surface of the D-type pulley is horizontal, leaving space, and the block of the worm sleeve 9 can slide to the right, and the worm drives the worm sleeve 9 to move to the right. The reduction motor continues to rotate clockwise, and the worm drives the worm sleeve 9 to continue to move to the right. Finally, the screw of the right section of the worm is engaged with the nut in the second rotating arm 2, and the spring 12 in the second rotating arm 2 will ensure more effective engagement between them.

[0061] When performing the locking action, Figure 3As shown, the reduction motor continues to rotate, and when the worm is separated from the worm wheel, the nut in the second rotating arm 2 moves to the left, and the worm stopper 8 presses the worm sleeve 9 stopper to the right, and then the worm sleeve 9 stopper presses the first rotating arm 1 to the right, and the first rotating arm 1 and the second rotating arm 2 are locked.

[0062] When performing the unlocking action, the reduction motor reverses and drives the screw to rotate. At this time, the nut in the second rotating arm 2 moves to the right, and under the action of the spring 12, the screw moves to the left until it meshes with the worm gear. Due to the action of the worm sleeve 9 block and the D-type pulley, the second rotating arm 2 and the worm gear are still fixed and cannot rotate. As the reduction motor continues to reverse until the worm retreats to the left dead point, the worm sleeve 9 disengages from the D-type pulley, and the rotation of the worm drives the worm gear to rotate counterclockwise, so the second rotating arm 2 rotates in the opposite direction, and the first rotating arm 1 and the second rotating arm 2 are unlocked.

[0063] like Figure 4 As shown, in order to achieve external protection of the electric-controlled rotating arm locking device, a dust cover 13 can be set outside the electric-controlled rotating arm locking device, and the dust cover 13 matches the shape of the electric-controlled rotating arm locking device, that is, a placement space is set at the position corresponding to the D-type pulley and the worm gear of the dust cover 13, so as to protect the electric-controlled rotating arm locking device without hindering its rotation and locking actions.

[0064] In yet another embodiment, an automatic folding vehicle is provided, and the automatic folding vehicle includes the above-mentioned electrically controlled rotating arm locking device.

[0065] The automatic folding vehicle also includes a power supply battery and a control component. The functional battery is connected to the electric-controlled rotating arm locking device through a wire to provide power for the electric-controlled rotating arm locking device to perform rotation, locking and unlocking. The control component is used to send control instructions to the electric-controlled rotating arm locking device to drive the electric-controlled rotating arm locking device to perform corresponding actions, thereby realizing automatic folding and automatic recovery of the automatic folding vehicle.

[0066] In this embodiment, an automatic folding vehicle is provided. When the automatic folding vehicle is folded by itself, the frame is automatically folded by using an electrically controlled rotating arm locking device to ensure that the space occupied by the automatic folding vehicle after folding is small enough.

[0067] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An electrically controlled rotating arm locking device, characterized in that: It comprises a first rotating arm and a second rotating arm which are rotatably connected, wherein the first rotating arm is provided with a first cavity, and the second rotating arm is provided with a second cavity; wherein: The first cavity is provided with a locking drive device and a first locking mechanism, the first locking mechanism includes a first rotating member and a second rotating member, and the locking drive device drives the first rotating member and the second rotating member to perform a rotation action; The second rotating arm is fixedly provided with a third rotating member, and the third rotating member cooperates with the rotating action of the first rotating member to drive the second rotating arm to rotate; The second cavity is provided with a second locking mechanism, and the second locking mechanism cooperates with the second rotating member to lock the first rotating arm and the second rotating arm when the electric-controlled rotating arm locking device is docked, and to unlock the first rotating arm and the second rotating arm when the electric-controlled rotating arm locking device is folded; The first rotating member is a worm, and the second rotating member is a screw. The worm is arranged on the screw. When the locking drive device controls the screw to perform a first rotating action, the worm follows the screw to perform a second rotating action. The third rotating member is a worm wheel, which is meshed with the worm, and the worm wheel follows the second rotating action of the worm to perform a third rotating action to drive the second rotating arm to rotate; A first protrusion is provided in the first cavity, and the first locking mechanism further comprises a worm stopper, which is provided on one side of the first protrusion and offsets the reaction force applied by the worm wheel to the worm when the electric-controlled rotating arm locking device is docked; The first cavity is provided with a second protrusion, wherein: The first locking mechanism further comprises a worm sleeve, the worm sleeve is connected to the worm sleeve; the worm sleeve is provided with a worm sleeve stopper, and the worm sleeve stopper is arranged on one side of the second protrusion; A pulley is provided at the end of the second rotating arm, and when the electric-controlled rotating arm locking device is unlocked, the pulley contacts the worm sleeve stopper to fix the position of the second rotating arm; The second locking mechanism is a nut. When the electric-controlled rotating arm locking device is docked, the screw is engaged with the nut to lock the first rotating arm and the second rotating arm. When the electric-controlled rotating arm locking device is folded, the screw is separated from the nut to unlock the first rotating arm and the second rotating arm.

2. The electrically controlled rotating arm locking device according to claim 1, characterized in that: The pulley is a D-type pulley, and the straight surface of the D-type pulley is arranged parallel to the second rotating arm, so that after the end surfaces of the first rotating arm and the second rotating arm are connected, the worm sleeve moves left and right in the straight surface space of the D-type pulley following the rotation of the worm.

3. The electrically controlled rotating arm locking device according to claim 1, characterized in that: A spring is arranged in the second cavity, and the spring contacts the second locking mechanism. When the electric-controlled rotating arm locking device is docked, the spring provides the second locking mechanism with a force in the direction of the second rotating member.

4. The electrically controlled rotating arm locking device according to claim 1, characterized in that: It also includes a dust cover arranged outside the electric-controlled rotating arm locking device, and the dust cover matches the shape of the electric-controlled rotating arm locking device.

5. Automatic folding bicycle, characterized in that: The automatic folding vehicle comprises the electrically controlled rotating arm locking device as described in any one of claims 1-4.

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