Electric middle support and electric vehicle

Abstract

The utility model relates to the technical field of electric vehicles, in particular to an electric middle support and an electric vehicle, which comprise a mounting seat, a gear, a first rotating shaft, a second rotating shaft and a third rotating shaft, a middle support assembly is fixed on the transmission pipe; the incomplete gear ring is fixed in the middle of the transmission pipe and is meshed with the gear; the transmission pipe is driven to rotate around the axis of the transmission pipe through cooperation of the gear and the incomplete gear ring so that the middle supporting assembly can be folded or unfolded. Through the arrangement of the gear, the transmission pipe and the incomplete gear ring, the gear can be driven to rotate in an electric mode, and therefore the transmission pipe is driven to rotate around the axis of the transmission pipe through the cooperation of the gear and the incomplete gear ring, and the middle supporting assembly is folded or unfolded. Compared with a traditional manual foot stepping supporting mode, the middle supporting assembly can be automatically folded and unfolded through the electric design, the use problem caused by insufficient strength in traditional manual operation is solved, and the use convenience and the intelligent level of the electric vehicle are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle technology, specifically to an electric center stand and an electric vehicle. Background Technology

[0002] The center stand of an electric vehicle is usually installed at the center of the bottom of the frame, with one end hinged to the frame and the other end folded upwards when not in use. In daily use, the user needs to step on the foot pedal to slowly lower the center stand. After the stand foot firmly contacts the ground, push the vehicle backward to ensure that the vehicle is fully supported by the center stand.

[0003] However, this operating method is not very user-friendly for users with less strength. Because the center stand needs to overcome the vehicle's weight and ground friction to be raised, some female users or those with weaker physiques often find it difficult to apply force and thus cannot successfully raise the center stand. Improper operation may even cause the vehicle to tip over, posing a certain safety hazard. Therefore, we propose an electric center stand and an electric vehicle to effectively solve the above-mentioned drawbacks. Utility Model Content

[0004] The purpose of this utility model is to provide an electric center stand and an electric vehicle to solve the problem mentioned in the background art that the foot-operated center stand method is not very user-friendly for users with less strength.

[0005] This utility model is achieved through the following technical solution: an electric center support, including a mounting base, and further comprising:

[0006] A gear, which is rotatably connected to a mounting base, and a drive assembly for driving the gear to rotate about its own axis is provided on the mounting base;

[0007] A transmission tube, the axis of which is parallel to the axis of the gear, and a central support assembly is fixed on the transmission tube;

[0008] An incomplete gear ring is fixed to the middle of the transmission tube and meshes with a gear; through the cooperation of the gear and the incomplete gear ring, the transmission tube is driven to rotate around its own axis, so that the middle support assembly can be retracted or lowered.

[0009] A limiting component is disposed between the incomplete toothed ring and the mounting base to limit the retraction or extension of the central support component.

[0010] Optionally, the drive assembly includes a DC geared motor fixed on a mounting base, the output end of the DC geared motor being connected to a D-shaped output shaft, and a D-shaped hole being formed on the gear to mate with the D-shaped output shaft.

[0011] Optionally, the central support assembly includes a central support leg, and a plurality of pressure seats fitted onto the transmission tube are fixed at the upper end of the central support leg, with each pressure seat being fixed to the transmission tube by screws.

[0012] Optionally, the incomplete gear ring has a fan-shaped limiting opening, one end face of which is a first limiting surface and the other end face of which is a second limiting surface.

[0013] Optionally, the limiting component includes a needle roller bearing rotatably connected to the mounting base and moving through the sector-shaped limiting port, wherein the outer ring of the needle roller bearing contacts the outer arc surface of the sector-shaped limiting port.

[0014] Optionally, elastic hooks are fixed on both the first limiting surface and the second limiting surface. The elastic hooks cooperate with the incomplete gear ring to form an insertion port and a circular limiting port through which the needle roller bearings pass in sequence. The outer diameter of the insertion port is larger than the diameter of the needle roller bearing, and the inner diameter of the insertion port is smaller than the diameter of the needle roller bearing but larger than the radius of the needle roller bearing.

[0015] This utility model also provides an electric vehicle, including the electric center stand as described above, and a frame, on which a support spindle is fixed; the mounting seat is fixed on the frame, and the transmission tube is movably sleeved on the support spindle.

[0016] Compared with the prior art, this utility model provides an electric center stand and an electric vehicle, which have the following features:

[0017] Beneficial effects:

[0018] 1. This utility model, by incorporating gears, a transmission tube, and an incomplete gear ring, allows for electric rotation of the gears. The gears, in turn, work together with the incomplete gear ring to rotate the transmission tube around its own axis, thus raising or lowering the center support assembly. Compared to the traditional manual foot-operated support method, this electric design completely solves the operational difficulties caused by insufficient manpower. It not only significantly reduces operational difficulty and improves the user experience but also avoids the risk of vehicle tipping due to insufficient strength or improper operation, significantly enhancing safety and convenience.

[0019] 2. By setting a limiting component, this utility model can provide a reliable limiting function after the central support component completes the retraction or extension action, ensuring its stability in the retraction or extension state, further improving the reliability and safety of the device, and ensuring the stable operation of the entire system. Attached Figure Description

[0020] Figure 1 This is an overall schematic diagram of Example 1;

[0021] Figure 2 This is an overall schematic diagram from another perspective of Embodiment 1;

[0022] Figure 3 This is a schematic diagram of the mounting base in Embodiment 1;

[0023] Figure 4 This is a schematic diagram of the gear in Example 1;

[0024] Figure 5 This is a schematic diagram of the elastic hook in Example 1;

[0025] Figure 6 This is a schematic diagram of the overall implementation of Example 2.

[0026] In the diagram: 1. Mounting base; 2. Gear; 3. Drive assembly; 301. DC geared motor; 302. D-type output shaft; 4. Transmission tube; 5. Center support assembly; 501. Center support foot; 502. Pressure seat; 6. Incomplete gear ring; 7. Limiting assembly; 701. Needle roller bearing; 702. Elastic hook; 8. First limiting surface; 9. Second limiting surface; 10. Embedding port; 11. Circular limiting port; 12. Frame; 13. Support spindle. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1: Please refer to Figures 1 to 5 An electric center support includes a mounting base 1 for providing support for other components. This embodiment also includes a gear 2, a transmission tube 4, an incomplete gear ring 6, and a limiting assembly 7, to address the problem that the existing foot-operated center support method is not user-friendly for users with less strength.

[0029] Specifically, gear 2 is rotatably connected to mounting base 1. To achieve a stable and economical transmission effect, both ends of gear 2 are connected to mounting base 1 via deep groove ball bearings. These bearings, with their simple structural design and low production cost, ensure smooth and flexible rotation of gear 2 while effectively reducing overall manufacturing and maintenance costs. A drive assembly 3 for driving gear 2 to rotate around its own axis is provided on mounting base 1. In this embodiment, drive assembly 3 includes a DC geared motor 301 fixed to mounting base 1. The output end of the DC geared motor 301 is connected to a D-shaped output shaft 302, and a D-shaped hole is provided on gear 2 to mate with the D-shaped output shaft 302. During actual operation, the DC geared motor 301 uses its internal reduction mechanism to convert power into high torque output, driving the D-shaped output shaft 302 to rotate. Through the tight fit between the shaft and the hole, gear 2 can rotate synchronously with the D-shaped output shaft 302, thereby efficiently transmitting power to subsequent transmission components.

[0030] It is worth mentioning that when gear 2 rotates and drives the incomplete gear ring 6 to its limit position, it cannot continue to rotate due to the mechanical structure's limitation. At this point, the DC geared motor 301 enters a stall state, and the current rises sharply. The controller's built-in current detection module can monitor current changes in real time. Once the current exceeds a preset threshold, it will quickly trigger the power-off protection mechanism, controlling the motor to stop working and ensuring the safety and reliability of the entire transmission system. In addition, due to the self-locking function of the DC geared motor 301, after the DC geared motor 301 is powered off, it can automatically maintain its current position, preventing the load from rotating due to gravity or other external forces, thus keeping the motor shaft and the connected load in a fixed state. This is existing technology and will not be elaborated further.

[0031] The axis of the transmission tube 4 is parallel to the axis of the gear 2. A central support assembly 5 is fixed on the transmission tube 4. When the transmission tube 4 rotates around its own axis, the central support assembly 5 can be lowered or retracted. In this embodiment, the central support assembly 5 includes a central support leg 501. Several pressure seats 502 are fixed to the upper end of the central support leg 501 and sleeved on the transmission tube 4. Each pressure seat 502 is fixed to the transmission tube 4 by screws. When the transmission tube 4 rotates around its own axis, the central support leg 501 can be rotated through each pressure seat 502 to perform the lowering or retraction operation.

[0032] In addition, the incomplete gear ring 6 is fixed in the middle of the transmission tube 4 and meshes with the gear 2; through the cooperation of the gear 2 and the incomplete gear ring 6, the transmission tube 4 is driven to rotate around its own axis, so that the middle support assembly 5 can be retracted or lowered.

[0033] With the above structure, when the DC geared motor 301 is working, it drives the gear 2 to rotate through the D-type output shaft 302. In turn, the gear 2 and the incomplete gear ring 6 drive the transmission tube 4 to rotate, which allows the middle support leg 501 to be raised or lowered. Compared with the traditional manual foot-operated support method, this electric design completely solves the problem of operation difficulties caused by insufficient manpower. It not only greatly reduces the difficulty of operation and improves the user experience, but also avoids the risk of vehicle tipping over due to insufficient strength or improper operation, significantly enhancing the safety and convenience of use.

[0034] It should be added that a fan-shaped limiting port runs through the incomplete gear ring 6. One end face of the fan-shaped limiting port is the first limiting surface 8, and the other end face of the fan-shaped limiting port is the second limiting surface 9. When the incomplete gear ring 6 rotates, the rotation range of the incomplete gear ring 6 can be limited by the cooperation of the first limiting surface 8, the second limiting surface 9 and the limiting component 7.

[0035] The following is a description of the limit component 7:

[0036] The limiting component 7 is disposed between the incomplete gear ring 6 and the mounting base 1 to limit the retraction or extension of the central support component 5. Specifically, the limiting component 7 includes a needle roller bearing 701 rotatably connected to the mounting base 1 and moving through the sector-shaped limiting port. The outer ring of the needle roller bearing 701 contacts the outer arc surface of the sector-shaped limiting port, ensuring a constant center distance when under force.

[0037] Both the first limiting surface 8 and the second limiting surface 9 are fixed with elastic hooks 702 adapted to the needle roller bearing 701, used to hook the needle roller bearing 701. The elastic hooks 702 cooperate with the incomplete gear ring 6 to form an insertion port 10 and a circular limiting port 11 through which the needle roller bearing 701 passes in sequence. The outer diameter of the insertion port 10 is larger than the diameter of the needle roller bearing 701, making it easier for the needle roller bearing 701 to enter the insertion port 10. The inner diameter of the insertion port 10 is smaller than the diameter of the needle roller bearing 701 but larger than the radius of the needle roller bearing 701. When the needle roller bearing 701 enters the circular limiting port 11 through the insertion port 10, the size restriction of the inner port and the elastic force of the elastic hooks 702 work together to form a reliable locking effect, making it difficult for the needle roller bearing 701 to come out on its own. Only when the external force overcomes the elasticity of the elastic hook 702 and the constraint of the locking jaw can the needle roller bearing 701 disengage from the insert 10, thereby enabling auxiliary locking of the incomplete gear ring 6 and ensuring the stability of the middle support leg 501 in the retracted or extended state.

[0038] Using the above structure, such as Figure 1 As shown, when the incomplete gear ring 6 rotates counterclockwise along the axis of the transmission tube 4 until the needle roller bearing 701 contacts and collides with the first limiting surface 8, the rotation of the incomplete gear ring 6 is hindered, and the middle support leg 501 reaches a fully extended state, which can stably support the vehicle. At the same time, the elastic hook 702 on the first limiting surface 8, by means of the rebound force generated by its own deformation, firmly hooks the needle roller bearing 701, forming a mechanical locking structure, effectively preventing the incomplete gear ring 6 from rotating and ensuring the stability of the supported state.

[0039] When the incomplete gear ring 6 rotates clockwise along the axis of the transmission tube 4, it drives the middle support leg 501 to retract upwards until the needle roller bearing 701 abuts against the second limiting surface 9. At this point, the incomplete gear ring 6 stops rotating, and the middle support leg 501 is fully retracted. Simultaneously, the elastic hook 702 on the second limiting surface 9 hooks onto the needle roller bearing 701, fixing the incomplete gear ring 6 in the retracted position through an elastic locking mechanism. This bidirectional limiting and locking design, with the cooperation of the elastic hook 702 and the needle roller bearing 701, provides reliable fixing constraints in both the unfolded and retracted states of the middle support leg 501, significantly improving the operational stability of the device under different working conditions, effectively avoiding safety hazards caused by loose components, and providing a solid guarantee for the long-term stable operation of the entire electric middle support system.

[0040] Example 2: Please refer to Figure 6This embodiment also proposes an electric vehicle, including the electric center stand proposed in Embodiment 1, and a frame 12. A support spindle 13 is fixed on the frame 12 for supporting the transmission tube 4. The mounting base 1 is fixed on the frame 12, and the transmission tube 4 is movably sleeved on the support spindle 13, allowing the transmission tube 4 to rotate around the support spindle 13.

[0041] like Figure 6 As shown, the center support leg 501 is fully extended, providing support for the electric vehicle. When the center support leg 501 needs to be retracted, the DC geared motor 301 drives the D-type output shaft 302 to rotate, which in turn drives the gear 2 to rotate counterclockwise. This, in turn, through the interaction of the gear 2 and the incomplete gear ring 6, drives the transmission tube 4 to rotate clockwise around the support spindle 13, thus retracting the center support leg 501. During the complete retraction of the center support leg 501, the needle roller bearing 701 is embedded in the circular limiting opening 11 formed by the elastic hook 702 and the incomplete gear ring 6. The special structural design of the circular limiting opening 11, combined with the elastic locking function of the elastic hook 702, provides a stable constraint on the needle roller bearing 701, effectively suppressing the wobbling of the center support leg 501 and ensuring its stability and reliability in the retracted state, providing a solid guarantee for vehicle parking and driving.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electric center support, comprising a mounting base (1), characterized in that, Also includes: Gear (2), the gear (2) is rotatably connected to the mounting base (1), and a drive assembly (3) for driving the gear (2) to rotate around its own axis is provided on the mounting base (1); Transmission tube (4), the axis of which is parallel to the axis of gear (2), and a central support assembly (5) is fixed on the transmission tube (4); Incomplete gear ring (6), the incomplete gear ring (6) is fixed in the middle of the transmission tube (4) and meshes with the gear (2); through the cooperation of the gear (2) and the incomplete gear ring (6), the transmission tube (4) is driven to rotate around its own axis so that the middle support assembly (5) can be retracted or lowered; A limiting component (7) is disposed between the incomplete toothed ring (6) and the mounting base (1) for limiting the retracted or extended middle support component (5).

2. The electric center support according to claim 1, characterized in that: The drive assembly (3) includes a DC geared motor (301) fixed on the mounting base (1). The output end of the DC geared motor (301) is connected to a D-type output shaft (302), and a D-type hole that mates with the D-type output shaft (302) is provided on the gear (2).

3. The electric center support according to claim 1, characterized in that: The central support assembly (5) includes a central support foot (501), and a number of pressure seats (502) sleeved on the transmission tube (4) are fixed at the upper end of the central support foot (501). Each pressure seat (502) is fixed to the transmission tube (4) by screws.

4. The electric center support according to claim 1, characterized in that: The incomplete gear ring (6) has a fan-shaped limiting opening through it. One end face of the fan-shaped limiting opening is the first limiting surface (8), and the other end face of the fan-shaped limiting opening is the second limiting surface (9).

5. The electric center support according to claim 4, characterized in that: The limiting component (7) includes a needle roller bearing (701) that is rotatably connected to the mounting base (1) and moves through the fan-shaped limiting port. The outer ring of the needle roller bearing (701) is in contact with the outer arc surface of the fan-shaped limiting port.

6. The electric center support according to claim 5, characterized in that: An elastic hook (702) is fixed on both the first limiting surface (8) and the second limiting surface (9). The elastic hook (702) cooperates with the incomplete gear ring (6) to form an insertion port (10) and a circular limiting port (11) through which the needle roller bearing (701) passes in sequence. The outer diameter of the insertion port (10) is larger than the diameter of the needle roller bearing (701), and the inner diameter of the insertion port (10) is smaller than the diameter of the needle roller bearing (701) but larger than the radius of the needle roller bearing (701).

7. An electric vehicle, comprising the electric center stand as described in any one of claims 1-6, characterized in that: It also includes a frame (12), on which a support spindle (13) is fixed; the mounting seat (1) is fixed on the frame (12), and the transmission tube (4) is movably sleeved on the support spindle (13).

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