Electrically controlled rotating arm lock device and automatic folding car

Abstract

The present invention discloses an electrically controlled rotating arm locking device and an automatic folding car, which includes a first rotating arm on which a first locking mechanism including a first rotating body and a second rotating body connected to rotation is installed, and a second rotating arm on which a third rotating body is fixedly installed, engages with the second rotating body, and is on which a second locking mechanism for locking or unlocking the first rotating arm and the second rotating arm is installed. [Solution] The present invention realizes port butting of the first rotating arm and the second rotating arm by engaging a first rotating body installed on the first rotating arm with a third rotating body installed on the second rotating arm, and further performs a locking operation by engaging a second rotating body of the first rotating arm with a second locking mechanism in the second rotating arm. By dividing the rotating arm locking process into structures corresponding to the two steps of butting and locking and executing them, it is possible to ensure the stability of the lock between the lock arms and the flexibility of the unlocking.

Description

[Technical field]

[0001] The present invention relates to the field of rotating arm control technology, and in particular to an electrically controlled rotating arm lock device and an automatic folding car. [Background technology]

[0002] In the process of life and production, it is always necessary to fix and lock the two rotating arms so that the stability of the rotating arms is high when locked and the rotation angle is large when unlocked, and to meet the needs of flexibility and stability of the control of the rotating arms, such as when an automatic folding car performs frame folding.

[0003] However, the existing rotating arm locking device usually adopts manual operation, which is inefficient and time-consuming, if an electric control link mechanism is adopted, its structure is complicated, voluminous, unattractive, the motor power output is not smooth and it is difficult to rotate at a large angle, if a worm gear rotating arm is adopted, the rotating arm swings due to the meshing gap, and the output moment of the rotating arm is limited due to the strength of the meshing teeth of the 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 quickly.

[0004] The above contents are only used to assist the understanding of the technical solution of the present invention, and do not represent an admission that the above contents are prior art. Summary of the Invention [Problem to be solved by the invention]

[0005] The main objective of the present invention is to provide an electrically controlled rotating arm lock device and an automatic folding car, which are intended to solve the technical problem that the existing rotating arm control methods have low lock stability and low unlock flexibility. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention provides an electrically controlled rotating arm locking device, including a first rotating arm having a first cavity and a second rotating arm having a second cavity, wherein: A first lock mechanism including a lock drive device, a first rotating body, and a second rotating body is installed in the first cavity, and the lock drive device drives the first rotating body and the second rotating body to perform a rotational motion; a third rotating body is fixedly installed on the second rotating arm, the third rotating body being engaged with the rotational movement of the first rotating body, rotating the second rotating arm, and abutting end faces of the first rotating arm and the second rotating arm; A second locking mechanism is installed in the second cavity, which fits into the second rotating body, locks the first rotating arm and the second rotating arm when the electrically controlled rotating arm locking device is abutted, and unlocks the first rotating arm and the second rotating arm when the electrically controlled rotating arm locking device is folded.

[0007] In the present invention, the first rotating arm and the second rotating arm are butted or folded by engaging a first rotating body mounted on the first rotating arm with a third rotating body mounted on the second rotating arm, and a locking or unlocking operation is performed by engaging the second rotating body of the first rotating arm with a second locking mechanism in the second rotating arm, thereby ensuring flexibility and stability of the locking device. Optionally, when the first rotating body is a worm and the second rotating body is a screw, the worm is installed on the screw, and the lock drive device controls the screw to perform a first rotational motion, the worm follows the screw to perform a second rotational motion.

[0008] In the present invention, the worm rotates following the screw, so that when the screw performs a first rotation, the worm performs a second rotation motion, thereby realizing the process of butting and locking, so that one driving device drives the rotation of two parts and realizes two operations, and the structure of the locking device is simplified.

[0009] Optionally, the third rotating body is a worm gear that meshes with the worm, follows the second rotational motion of the worm, and performs a third rotational motion to rotationally drive the second rotating arm.

[0010] In the present invention, when the worm performs the second rotational motion, the worm gear rotates following the worm, so that the worm gear performs the third rotational motion, thereby realizing the process of butting and locking, so that one driving device drives the rotation of two parts and realizes two operations, and the structure of the locking device is simplified.

[0011] Optionally, a first protrusion is installed in the first cavity, and the first locking mechanism further includes a worm stopper installed on the first protrusion side to counteract the reaction force applied to the worm by the worm gear when the electrically controlled rotating arm locking device is abutted.

[0012] In the present invention, the first protrusion is installed to prevent the movement of the worm stopper, and further to offset the reaction force applied to the worm by the worm gear, thereby optimizing the force-receiving structure and improving the stability of the electrically controlled rotary locking device.

[0013] Optionally, a second protrusion is disposed in the first cavity; The first locking mechanism further includes a worm sleeve connected to the worm by a sleeve and having a worm sleeve stopper disposed on the second projection side.

[0014] A pulley is installed on the end of the second rotating arm, which contacts a stopper of the worm sleeve and fixes the position of the second rotating arm when the electrically controlled rotating arm locking device is unlocked.

[0015] In the present invention, by installing a pulley, when the electrically controlled rotating arm locking device is unlocked, the position of the second rotating arm is fixed, and the second rotating arm is prevented from performing a rotating operation when it is not unlocked.

[0016] Optionally, the pulley is a D-shaped pulley with a straight surface installed parallel to the second rotating arm so that after the end faces of the first rotating arm and the second rotating arm are butted together, the worm sleeve moves left and right within the space of the straight surface of the D-shaped pulley in response to the rotation of the worm.

[0017] In the present invention, by installing a D-shaped pulley, after the end faces of the first rotating arm and the second rotating arm are butted together, a space is formed on the straight surface of the D-shaped pulley for the worm sleeve to move left and right, making the unlocking operation easier.

[0018] Optionally, the second locking mechanism is a nut, and when the electrically controlled rotating arm locking device is butted, 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 disengages from the nut to unlock the first rotating arm and the second rotating arm.

[0019] In the present invention, the locking and unlocking operations are performed by installing a nut in the second rotating arm that fits onto the screw in the first rotating arm, thereby improving the stability of the locking device.

[0020] Optionally, a spring is disposed within the second cavity for contacting the second locking mechanism and providing a force to the second locking mechanism in a second rotor direction when the electrically controlled rotary arm locking device is butted.

[0021] In the present invention, a spring is installed in the second cavity to provide the second locking mechanism with a force in the direction of the second rotating body when they are butted together, making it easier for the second locking mechanism to engage with the second rotating body and improving the stability of the engagement.

[0022] Optionally, the electrically controlled rotating arm lock device further includes a dustproof sleeve located outside the electrically controlled rotating arm lock device and matching the shape of the electrically controlled rotating arm lock device.

[0023] In the present invention, a dustproof sleeve is provided on the outside of the electrically controlled rotating arm locking device, and a shape-matching structure is provided on the pulley of the dustproof sleeve, so as to facilitate the movement of the pulley when folding or butting the electrically controlled rotating arm locking device.

[0024] In order to achieve the above object, the present invention further proposes an automatic folding car including the above-mentioned electrically controlled rotating arm lock device. Effect of the Invention

[0025] In the present invention, the electrically controlled rotating arm locking device includes a first rotating arm on which a first locking mechanism including a first rotating body and a second rotating body is installed, and a second rotating arm on which a third rotating body is fixedly installed and fitted to the second rotating body, and a second locking mechanism for locking the first rotating arm and the second rotating arm is installed. The present invention realizes the port butting of the first rotating arm and the second rotating arm by fitting the first rotating body installed on the first rotating arm with the third rotating body installed on the second rotating arm, and further performs the locking operation by fitting the second rotating body of the first rotating arm with the second locking mechanism on the second rotating arm, and divides the rotating arm locking process into structures corresponding to the two steps of butting and locking, thereby ensuring the stability of the lock between the locking arms and the flexibility of unlocking. [Brief description of the drawings]

[0026] In order to more clearly describe the technical solutions in the embodiments of the present invention or the existing technology, the following briefly describes the accompanying drawings which need to be used in the description of the embodiments or the existing technology. [Figure 1] FIG. 2 is a structural schematic diagram of an electrically controlled rotating arm locking device according to the present invention. [Diagram 2] FIG. 2 is a schematic diagram of the butting structure of the electrically controlled rotating arm locking device according to the present invention. [Diagram 3] FIG. 2 is a schematic diagram of the lock structure of the electrically controlled rotating arm lock device according to the present invention. [Figure 4] FIG. 2 is a schematic diagram showing the structure of a dustproof sleeve according to the present invention.

[0027] The realization of the objectives, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0028] It should be understood that the specific examples described herein are used only to illustrate the present invention and are not used to limit the present invention.

[0029] In the process of life and production, it is always necessary to fix and lock the two rotating arms so that the stability of the rotating arms is high when locked and the rotation angle is large when unlocked, and to meet the needs of flexibility and stability of the control of the rotating arms, such as when an automatic folding car performs frame folding.

[0030] However, the existing rotating arm locking device usually adopts manual operation, which is inefficient and time-consuming, if an electric control link mechanism is adopted, its structure is complicated, voluminous, unattractive, the motor power output is not smooth and it is difficult to rotate at a large angle, if a worm gear rotating arm is adopted, the rotating arm swings due to the meshing gap, and the output moment of the rotating arm is limited due to the strength of the meshing teeth of the 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 quickly.

[0031] In order to solve this problem, various embodiments of the electrically controlled rotating arm locking device of the present invention are proposed. The electrically controlled rotating arm locking device of the present invention realizes the port butting of the first rotating arm and the second rotating arm by fitting the first rotating body installed on the first rotating arm with the third rotating body installed on the second rotating arm, and further performs the locking operation by fitting the second rotating body of the first rotating arm with the second locking mechanism of the second rotating arm, and divides the rotating arm locking process into structures corresponding to the two steps of butting and locking, thereby ensuring the stability of the lock between the locking arms and the flexibility of unlocking.

[0032] The following clearly and completely describes the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without any creative effort are all within the protection scope of the present invention.

[0033] It should be noted that all directional indications (e.g., up, down, left, right, front, back, etc.) in the embodiments of the present invention are used only to explain the relative positional relationships, movement, etc. between each part in a certain position (as shown in the drawings), and when the certain position changes, the directional indications also change accordingly.

[0034] In addition, the technical solutions in each embodiment can be combined with each other, but this must be based on what a person skilled in the art can realize. If the combination of the technical solutions causes a contradiction or is not feasible, it should be considered that such combination of the technical solutions does not exist, and is not included in the scope of protection claimed by the present invention.

[0035] Please refer to FIG. 1, which is a structural schematic diagram of the electrically controlled rotating arm lock device of the present invention.

[0036] As shown in FIG. 1, in an embodiment, the electrically controlled rotating arm locking device includes a first rotating arm 1 connected to a rotation, in which a first cavity is provided, and a second rotating arm 2 in which a second cavity is provided.

[0037] Specifically, a lock drive device 3 and a first lock mechanism including a first rotating body 4 and a second rotating body 5 are installed in the first cavity, and the lock drive device 3 is connected to the first rotating body and drives the first rotating body 4 and the second rotating body 5 installed on the first rotating body to perform rotational operations.

[0038] It is easy to understand that the first rotating body 4 can be a worm, the second rotating body 5 is a screw, the worm is installed on the screw, and the lock drive device 3 is a reduction motor, and when the reduction motor controls the screw to perform the first rotation motion, the worm follows the screw to perform the second rotation motion.

[0039] A third rotating body 6 is fixedly installed on the second rotating arm 2, which engages with the rotational movement of the first rotating body 4, drives the second rotating arm 2 to rotate, and abuts the first rotating arm 1 and the second rotating arm 2. A second locking mechanism 7 is installed in the second cavity, which engages with the second rotating body 5 and locks the first rotating arm 1 and the second rotating arm 2 when the electrically controlled rotating arm locking device is abutted, and unlocks the first rotating arm 1 and the second rotating arm 2 when the electrically controlled rotating arm locking device is folded.

[0040] It is easy to understand that the third rotating body 6 is a worm gear that meshes with the worm, follows the second rotating motion of the worm, and performs a third rotating motion to rotate and drive the second rotating arm 2. In this embodiment, the worm rotates following the screw, so that when the screw performs the first rotation, the worm performs the second rotating motion, and further realizes the process of butting and locking, so that one driving device drives the rotation of two parts and realizes two operations, and simplifies the structure of the locking device.

[0041] It is easy to understand that in order to realize the butting operation of the end faces of the first rotating arm 1 and the second rotating arm 2, a first protrusion is installed in the first cavity, and the first locking mechanism is installed on the first protrusion side and further includes a worm stopper 8 which offsets the reaction force exerted on the worm when the worm gear follows the worm to perform the third rotation operation when the electrically controlled rotating arm locking device is butted.

[0042] It is easy to understand that in order to realize the butting action between the end faces of the first rotating arm 1 and the second rotating arm 2, a second protrusion is installed in the first cavity, where the first locking mechanism further includes a worm sleeve 9 which is sleeve-connected to the worm and can slide left and right in a limited range within the first cavity of the first rotating arm 1, and a worm sleeve stopper 10 installed on the second protrusion side is installed, and a pulley is installed on the end of the second rotating arm 2, which contacts the worm sleeve stopper and fixes the position of the second rotating arm when the electrically controlled rotating arm locking device is unlocked.

[0043] Furthermore, the pulley is a D-shaped pulley whose straight surface is installed parallel to the second rotating arm 2 so that after the end faces of the first rotating arm 1 and the second rotating arm 2 are butted together, the worm sleeve 9 moves left and right within the space of the straight surface of the D-shaped pulley in response to the rotation of the worm. By installing the D-shaped pulley in this embodiment, a space is formed in the straight surface of the D-shaped pulley for the worm sleeve to move left and right after the end faces of the first rotating arm and the second rotating arm are butted together, making the unlocking operation easier.

[0044] In another embodiment, the second locking mechanism 7 is a nut, and when the electrically controlled rotating arm locking device is butted, the screw engages with the nut and locks the first rotating arm 1 and the second rotating arm 2, and when the electrically controlled rotating arm locking device is folded, the screw disengages from the nut and unlocks the first rotating arm and the second rotating arm.

[0045] In addition, a spring 12 may also be installed within the second cavity, which contacts the second locking mechanism 7 and provides a force to the second locking mechanism in the direction of the second rotor 5 when the electrically controlled rotating arm locking device is butted against the second locking mechanism 7, thereby improving the meshing effect between the second locking mechanism 7 and the second rotor 5.

[0046] The working principle of the electric control rotating arm lock device is as follows: When performing the butting operation, as shown in FIG. 1, the reduction motor rotates forward to rotate the screw, in which case the worm gear rotates clockwise, and therefore the second rotating arm 2 rotates clockwise, in which case the worm receives a reverse force to the right of the worm gear, and the worm has a tendency to slide to the left or right, in which case, in order to maintain the position of the worm, the tendency of the worm to slide is offset by the supporting force of the first rotating arm 1 against the worm stopper 8, and the tendency of the worm to slide is offset by the reaction force between the stopper of the worm sleeve 9 and the arc surface of the D-shaped pulley, and further, the second rotating arm 2 is controlled to rotate only clockwise so that the end face of the second rotating arm 2 rotates in a direction overlapping with the end face of the first rotating arm 1.

[0047] As shown in Figure 2, the reduction motor continues to rotate forward, and when the first rotating arm 1 and the second rotating arm 2 overlap horizontally, the second rotating arm 2 cannot rotate, i.e. the worm gear does not rotate. In this case, the straight surface of the D-shaped pulley is horizontal with a space between them, and the stopper of the worm sleeve 9 can slide to the right, and the worm moves the worm sleeve 9 to the right. The reduction motor continues to rotate forward, and the worm moves the worm sleeve 9 to the right, and finally the screw of the right segment of the worm meshes with the nut in the second rotating arm 2, and the spring 12 in the second rotating arm 2 ensures a more effective meshing between them.

[0048] When performing the locking operation, as shown in FIG. 3, the reduction motor continues to rotate, and when the worm is separated from the worm gear, the nut in the second rotating arm 2 moves to the left, and the worm stopper 8 presses the stopper of the worm sleeve 9 to the right, and further, the stopper of the worm sleeve 9 presses the first rotating arm 1 to the right, in this case, the first rotating arm 1 and the second rotating arm 2 are locked.

[0049] When performing the unlocking operation, the reduction motor rotates in the reverse direction to rotate the screw, in this case the nut on 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 engages with the worm gear, and due to the action of the stopper of the worm sleeve 9 and the D-shaped pulley, the second rotating arm 2 and the worm gear remain fixed and cannot rotate. As the reduction motor continues to rotate in the reverse direction, the worm sleeve 9 disengages from the D-shaped pulley until the worm retracts to the left dead center, and the worm rotates to rotate the worm gear counterclockwise, so that the second rotating arm 2 rotates in the opposite direction, in this case the first rotating arm 1 and the second rotating arm 2 are unlocked.

[0050] As shown in FIG. 4, in order to realize external protection of the electrically controlled rotating arm lock device, a dustproof sleeve 13 matching the shape of the electrically controlled rotating arm lock device can be installed outside the electrically controlled rotating arm lock device, that is, an empty space is installed at a position corresponding to the D-shaped pulley and worm gear of the dustproof sleeve 13 so as to protect the electrically controlled rotating arm lock device while not hindering its rotating and locking operations.

[0051] In yet another embodiment, there is further provided an automatic folding car including the above-mentioned electrically controlled rotating arm lock device.

[0052] The automatic folding car further includes an energy supply battery connected to the electrically controlled rotating arm locking device by a lead wire, for providing power for performing rotation, locking and unlocking of the electrically controlled rotating arm locking device, and a control assembly for sending control commands to the electrically controlled rotating arm locking device, so as to drive the electrically controlled rotating arm locking device to perform corresponding operations and realize automatic folding and automatic recovery of the automatic folding car.

[0053] In this embodiment, an automatic folding vehicle is provided in which, when automatic folding is performed, the frame is automatically folded by an electrically controlled rotating arm locking device, thereby ensuring that the space occupied by the automatic folding vehicle after folding is sufficiently small.

[0054] The above is merely a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent flow transformation made by utilizing the contents of the specification and accompanying drawings of the present invention, or directly or indirectly applied to other related technical fields, is also within the scope of protection of the patent of the present invention. [Explanation of symbols]

[0055] 1 First rotating arm 2 Second rotating arm 3 Lock drive mechanism 4 First Rotating Body 5 Second Rotating Body 6 The third rotating body 7 Second Locking Mechanism 8 Worm Stopper 9 Warm Sleeves 10 Warm sleeve stopper 11 Pulley 12 Spring 13 Dustproof sleeve

Claims

1. 1. An electrically controlled rotating arm locking device including a first rotating arm in which a first cavity is provided and a second rotating arm in which a second cavity is provided, the first rotating arm being connected to a rotation, A first lock mechanism including a lock drive device, a first rotating body, and a second rotating body is installed in the first cavity, and the lock drive device drives the first rotating body and the second rotating body to perform a rotational motion; a third rotating body is fixedly installed on the second rotating arm, the third rotating body being engaged with the rotational movement of the first rotating body and rotatingly driving the second rotating arm; An electrically controlled rotating arm locking device characterized in that a second locking mechanism is installed in the second cavity, which fits into the second rotating body, locks the first rotating arm and the second rotating arm when the electrically controlled rotating arm locking device is abutted, and unlocks the first rotating arm and the second rotating arm when the electrically controlled rotating arm locking device is folded.

2. 2. The electrically controlled rotating arm lock device according to claim 1, wherein the first rotating body is a worm, the second rotating body is a screw, the worm is installed on the screw, and when the lock drive device controls the screw to perform a first rotating motion, the worm follows the screw to perform a second rotating motion.

3. The electrically controlled rotating arm lock device according to claim 2, characterized in that the third rotating body is a worm gear that meshes with the worm, follows the second rotational motion of the worm, and performs a third rotational motion to rotationally drive the second rotating arm.

4. The electrically controlled rotating arm locking device of claim 3, characterized in that a first protrusion is installed in the first cavity, and the first locking mechanism further includes a worm stopper installed on the first protrusion side and offsetting the reaction force applied to the worm by the worm gear when the electrically controlled rotating arm locking device is abutted.

5. A second protrusion is disposed in the first cavity; The electrically controlled rotating arm locking device according to claim 3, characterized in that the first locking mechanism further includes a worm sleeve connected to the worm by a sleeve and having a worm sleeve stopper installed on the second protrusion side.

6. The electrically controlled rotating arm locking device as described in claim 3, characterized in that a pulley is installed at the end of the second rotating arm, which contacts a stopper of the worm sleeve and fixes the position of the second rotating arm when the electrically controlled rotating arm locking device is unlocked.

7. The electrically controlled rotating arm locking device according to claim 5, characterized in that the pulley is a D-shaped pulley whose straight surface is installed parallel to the second rotating arm so that after the end faces of the first rotating arm and the second rotating arm are butted together, the worm sleeve moves left and right within the space of the straight surface of the D-shaped pulley in response to the rotation of the worm.

8. The electrically controlled rotating arm locking device of claim 2, characterized in that the second locking mechanism is a nut, and when the electrically controlled rotating arm locking device is butted, 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 is separated from the nut to unlock the first rotating arm and the second rotating arm.

9. The electrically controlled rotating arm locking device according to claim 7, characterized in that a spring is installed in the second cavity, which contacts the second locking mechanism and provides a force in the second rotor direction to the second locking mechanism when the electrically controlled rotating arm locking device is butted.

10. 2. The electrically controlled rotating arm lock device as claimed in claim 1, further comprising a dustproof sleeve located outside the electrically controlled rotating arm lock device and matching the shape of the electrically controlled rotating arm lock device.

11. An automatic folding car, comprising an electrically controlled rotating arm locking device according to any one of claims 1 to 9.

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