Movable center shaft support capable of being assembled and disassembled

Abstract

The utility model discloses a detachable movable center shaft support which comprises a five-way pipe, a center shaft, a bearing and a shaft bowl, two mounting blocks are fixedly mounted on the five-way pipe, a mounting plate is fixed to the corresponding portion of an electric vehicle frame through a plurality of movable holes and bolts, vibration and impact from the road surface or in the vehicle movement process can be relieved, and the service life of the center shaft is prolonged. The influence on other parts of the electric vehicle is reduced, stress concentration and abrasion caused by long-term fixation are avoided, and therefore the service life of the mounting plate and the whole electric vehicle is prolonged; by means of the design of the shaft bowls in threaded connection, the middle shaft is easy and fast to disassemble and assemble, the process of maintaining and replacing the middle shaft is simplified, and therefore the maintenance efficiency is improved. Oil is directly supplied to the bearing through the oil inlet hole, it can be ensured that the bearing obtains sufficient lubricating oil in the working process, friction is reduced, the service life of the bearing is prolonged, heat generated in the working process of the bearing can be taken away, and therefore the temperature of the bearing is effectively reduced, and the working stability of the bearing is improved.

Description

Technical Field

[0001] The present application relates to the technical field of electric vehicles, and in particular to a detachable movable axle bracket. Background Art

[0002] Electric bicycles are usually equipped with a battery-driven part and a human-driven part. The human-driven part consists of pedals, cranks, chainrings and axles. People pedal to drive the cranks, which in turn drive the chainrings, and finally drive the rear wheel through the chain and flywheel to provide power and complete the entire transmission chain of the bicycle. A retaining ring is set on the existing axle, which has good wear resistance with the steel ball when the axle rotates, thereby increasing the service life of the device.

[0003] Chinese utility model CN217374809U discloses a pedal center shaft transmission device for a two-wheeled electric vehicle, which changes the traditional welding connection method, and at the same time locates the bearing on the pedal center shaft in the corresponding port of the center shaft seat and tightens the screwed-in first external threaded hole block and second external threaded hole block, so as to achieve the effect of fixing the pedal center shaft, which is easy to disassemble and replace, has efficient installation, is balance-adjustable, can be recycled, and saves costs.

[0004] Although the existing detachable movable axle bracket has changed the traditional welding connection method and is fixedly installed with the corresponding part of the electric vehicle through a connecting plate, since the connecting plate and the five-way pipe are fixedly installed, fine-tuning cannot be performed during the installation process, and it cannot adapt to different installation angles and positions. The installation accuracy is poor, and long-term fixation will cause stress concentration and wear, which reduces the service life of the connecting plate and the entire electric vehicle. In addition, the traditional bearing lubrication method is to disassemble the relevant parts of the middle shaft before the bearing lubrication and maintenance work can be performed. The maintenance process is cumbersome and the maintenance efficiency is low. Therefore, in view of the above problems, a detachable movable axle bracket is proposed. Summary of the invention

[0005] In the present embodiment, a detachable movable axle bracket is provided to solve the problem that although the detachable movable axle bracket in the prior art changes the traditional welding connection method and is fixedly installed with the corresponding part of the electric vehicle through a connecting plate, since the connecting plate and the five-way pipe are fixedly installed, fine-tuning cannot be performed during the installation process, and it cannot adapt to different installation angles and positions. The installation accuracy is poor, and long-term fixation will cause stress concentration and wear, which reduces the service life of the connecting plate and the entire electric vehicle. In addition, the traditional bearing lubrication method is to disassemble the relevant parts of the middle shaft before the bearing lubrication and maintenance work can be carried out, and the maintenance process is cumbersome and the maintenance efficiency is low.

[0006] According to one aspect of the present application, there is provided a removable movable middle axle bracket, comprising a five-way tube, a middle axle, a bearing and a shaft bowl, wherein two mounting blocks are fixedly mounted on the five-way tube, a rotating shaft is rotatably connected between the two mounting blocks, a mounting plate is fixedly mounted on the rotating shaft, and a plurality of movable holes are formed on the mounting plate.

[0007] Furthermore, two internal threads are arranged inside the five-way pipe.

[0008] Furthermore, shaft cups are respectively provided at both ends of the five-way pipe, and both shaft cups are provided with external threads.

[0009] Furthermore, the two shaft bowls are threadedly connected to the internal threads of the five-way pipe via external threads.

[0010] Furthermore, a center axis is arranged inside the five-way pipe.

[0011] Furthermore, two shoulders are arranged on the central axis.

[0012] Furthermore, through grooves are provided inside the two shaft bowls, and oil seal rings are provided inside the two through grooves.

[0013] Furthermore, bearings are arranged inside the two through grooves.

[0014] Furthermore, two ends of the central shaft respectively penetrate the bearing, the oil seal ring and the shaft bowl and extend to the outer end of the shaft bowl.

[0015] Furthermore, the five-way pipe and the two shaft bowls are both provided with oil inlet holes.

[0016] Through the above-mentioned embodiments of the present application, the mounting plate is fixed to the corresponding part of the electric vehicle frame through multiple movable holes and bolts, and the rotatable mounting plate allows fine adjustment during the installation process to adapt to different installation angles and positions, which helps to achieve more precise positioning and alignment during the installation process, improves the accuracy of installation, can alleviate the vibration and impact from the road surface or vehicle movement to a certain extent, and reduce the impact on other components of the electric vehicle. It can be dynamically adjusted under different working conditions to avoid stress concentration and wear caused by long-term fixation, thereby extending the service life of the mounting plate and the entire electric vehicle;

[0017] The threaded cup design makes the removal and installation of the middle shaft simple and quick, and has high connection strength and stability, which can ensure that the middle shaft is not easy to loosen or fall off during operation. The middle shaft can be easily removed from the inside of the bottom bracket tube or installed in place by simply turning the cup, which simplifies the process of repairing and replacing the middle shaft, thereby improving maintenance efficiency;

[0018] Directly supplying oil to the bearing through the oil inlet hole can ensure that the bearing is adequately lubricated during operation, reduce friction, and extend the service life of the bearing. The lubricating oil circulates in the bearing, which can not only reduce friction, but also take away the heat generated during the operation of the bearing, thereby effectively reducing the temperature of the bearing and improving its working stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 This is a schematic diagram of a three-dimensional structure of an embodiment of the present application;

[0021] Figure 2 This is a schematic diagram of a front cross-sectional structure of an embodiment of the present application;

[0022] Figure 3 This is a schematic diagram of the internal structure of a bottom bracket tube according to an embodiment of the present application;

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of a shaft bowl according to an embodiment of the present application;

[0024] Figure 5 This is a schematic diagram of the central axis three-dimensional structure of an embodiment of the present application;

[0025] Figure 6 This is a schematic diagram of the three-dimensional structure of a bottom bracket tube according to an embodiment of the present application.

[0026] In the figure: 1, middle shaft; 2, bearing; 3, oil seal ring; 4, shaft cup; 5, mounting block; 6, movable hole; 7, mounting plate; 8, articulated shaft; 9, five-way pipe; 10, shaft shoulder; 11, oil inlet hole. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0029] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0030] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0031] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] See also Figure 1-6As shown, a detachable movable middle axle bracket includes a five-way tube 9, a middle axle 1, a bearing 2 and a shaft bowl 4, and is characterized in that: two mounting blocks 5 are fixedly mounted on the five-way tube 9, a rotating shaft 8 is rotatably connected between the two mounting blocks 5, a mounting plate 7 is fixedly mounted on the rotating shaft 8, a plurality of movable holes 6 are opened on the mounting plate 7, and the mounting plate 7 can be rotated to alleviate vibration and impact from the road surface or vehicle movement to a certain extent, and the mounting plate can absorb part of the vibration to reduce the impact on other components of the electric vehicle, and can be dynamically adjusted under different working conditions to avoid stress concentration and wear caused by long-term fixation, thereby extending the service life of the mounting plate and the entire electric vehicle.

[0034] The inside of the five-way pipe 9 is provided with two internal threads.

[0035] Axle cups 4 are respectively provided at both ends of the five-way pipe 9 , and both of the two axle cups 4 are provided with external threads.

[0036] The two shaft cups 4 are both threadedly connected to the internal threads of the five-way tube 9 via external threads. The threaded shaft cup 4 design makes the disassembly and installation of the middle shaft 1 simple and quick, and at the same time has high connection strength and stability, which can ensure that the middle shaft is not easy to loosen or fall off during operation.

[0037] The center axle 1 is arranged inside the bottom bracket tube 9 .

[0038] Two shaft shoulders 10 are arranged on the central shaft.

[0039] Through grooves are formed inside the two shaft bowls 4 , and oil seal rings 3 are disposed inside the two through grooves.

[0040] Bearings 2 are arranged inside the two through grooves.

[0041] The two ends of the central shaft 1 respectively penetrate the bearing 2 , the oil seal ring 3 and the shaft bowl 4 and extend to the outer end of the shaft bowl 4 .

[0042] The five-way pipe 9 and the two shaft bowls 4 are both provided with oil inlet holes 11 , and oil is directly supplied to the bearing 2 through the oil inlet holes 11 , which can ensure that the bearing 2 obtains sufficient lubricating oil during operation, reduce friction, and extend the service life of the bearing 2 .

[0043] When the present application is in use, the middle shaft 1 is placed inside the bottom tube 9 so that the two shaft shoulders 10 are both located inside the bottom tube 9, and the two shaft cups 4 are respectively placed at both ends of the bottom tube 9, and the shaft cups are rotated in sequence so that the shaft cups 4 are threadedly connected to the inside of the bottom tube 9, and one end of the two shaft cups 4 abuts against the shaft shoulders, so as to facilitate fixing the middle shaft 1 inside the bottom tube 9. The design of the shaft cups 4 connected by threads makes the removal and installation of the middle shaft 1 simple and quick, and has high connection strength and stability, which can ensure that the middle shaft is not easy to loosen or fall off during operation. Only by rotating the shaft cups 4, the middle shaft 1 can be easily removed from the inside of the bottom tube 9, or installed in place, which simplifies the process of repairing and replacing the middle shaft 1, thereby improving the maintenance efficiency;

[0044] The mounting plate 7 is fixed to the corresponding part of the electric vehicle frame through multiple movable holes 6 and bolts. The rotatable mounting plate 7 allows fine adjustment during the installation process to adapt to different installation angles and positions, which helps to achieve more precise positioning and alignment during the installation process and improve the accuracy of the installation. The mounting plate 7 can be rotated to alleviate the vibration and impact from the road surface or the movement of the vehicle to a certain extent. The mounting plate can absorb part of the vibration and reduce the impact on other parts of the electric vehicle. It can be dynamically adjusted under different working conditions to avoid stress concentration and wear caused by long-term fixation, thereby extending the service life of the mounting plate and the entire electric vehicle;

[0045] By directly supplying oil to the bearing 2 through the oil inlet hole 11, it can be ensured that the bearing 2 obtains sufficient lubricating oil during operation, thereby reducing friction and extending the service life of the bearing 2. The lubricating oil circulates in the bearing 2, which can not only reduce friction but also take away the heat generated during the operation of the bearing 2, thereby effectively reducing the temperature of the bearing and improving its working stability.

[0046] The benefits of this application are:

[0047] 1. The mounting plate 7 is fixed to the corresponding part of the electric vehicle frame through multiple movable holes 6 and bolts. The rotatable mounting plate 7 allows fine adjustment during the installation process to adapt to different installation angles and positions, which helps to achieve more precise positioning and alignment during the installation process and improve the accuracy of the installation. The mounting plate 7 can be rotated to alleviate the vibration and impact from the road surface or vehicle movement to a certain extent. The mounting plate can absorb part of the vibration and reduce the impact on other parts of the electric vehicle. It can be dynamically adjusted under different working conditions to avoid stress concentration and wear caused by long-term fixation, thereby extending the service life of the mounting plate and the entire electric vehicle;

[0048] 2. The threaded connection of the shaft cup 4 makes the removal and installation of the middle shaft 1 simple and quick, and has high connection strength and stability, which can ensure that the middle shaft is not easy to loosen or fall off during operation. The middle shaft 1 can be easily removed from the inside of the bottom bracket tube 9 or installed in place by simply rotating the shaft cup 4, which simplifies the process of repairing and replacing the middle shaft 1, thereby improving the maintenance efficiency;

[0049] 3. Directly supplying oil to the bearing 2 through the oil inlet hole 11 can ensure that the bearing 2 obtains sufficient lubricating oil during operation, reduce friction, and extend the service life of the bearing 2. The lubricating oil circulates in the bearing 2, which can not only reduce friction, but also take away the heat generated during the operation of the bearing 2, thereby effectively reducing the temperature of the bearing 2 and improving its working stability.

[0050] The circuits, electronic components and modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by this application does not involve improvements to software and methods.

[0051] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A detachable movable middle shaft bracket, comprising a five-way tube (9), a middle shaft (1), a bearing (2) and a shaft cup (4), characterized in that: Two mounting blocks (5) are fixedly mounted on the five-way pipe (9), a rotating shaft (8) is rotatably connected between the two mounting blocks (5), a mounting plate (7) is fixedly mounted on the rotating shaft (8), and a plurality of movable holes (6) are formed on the mounting plate (7).

2. The detachable movable middle shaft bracket according to claim 1, characterized in that: The interior of the five-way pipe (9) is provided with two internal threads.

3. The detachable movable middle shaft bracket according to claim 1, characterized in that: Both ends of the five-way pipe (9) are provided with shaft cups (4), and both shaft cups (4) are provided with external threads.

4. The detachable movable middle shaft bracket according to claim 1, characterized in that: The two shaft bowls (4) are both threadedly connected to the internal threads of the five-way pipe (9) via external threads.

5. The detachable movable middle shaft bracket according to claim 1, characterized in that: A center shaft (1) is arranged inside the five-way pipe (9).

6. The detachable movable middle shaft bracket according to claim 1, characterized in that: Two shaft shoulders (10) are arranged on the central shaft.

7. The detachable movable middle shaft bracket according to claim 1, characterized in that: The two shaft bowls (4) are both provided with through grooves, and the two through grooves are both provided with oil seal rings (3).

8. The detachable movable middle shaft bracket according to claim 7, characterized in that: Bearings (2) are arranged inside the two through grooves.

9. The detachable movable middle shaft bracket according to claim 1, characterized in that: The two ends of the central shaft (1) respectively penetrate the bearing (2), the oil seal ring (3) and the shaft bowl (4) and extend to the outer end of the shaft bowl (4).

10. The detachable movable middle shaft bracket according to claim 1, characterized in that: The five-way pipe (9) and the two shaft bowls (4) are both provided with oil inlet holes (11).

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