Motorcycle frame convenient to maintain and easy to disassemble

Abstract

The utility model relates to the technical field of motorcycles, in particular to a motorcycle frame convenient to maintain and easy to disassemble, which comprises a main frame, an engine is detachably mounted on the main frame through a drawing type locking mechanism, the drawing type locking mechanism comprises a mounting plate, and the mounting plate is in sliding fit with a first sliding groove formed in a lower beam; the number of the locking assemblies is two, and each locking assembly comprises a locking plate and a driving assembly; the locking plate is slidably arranged in the direction perpendicular to the mounting plate, and a first inclined face is arranged on the upper end face of the locking plate. The driving assembly comprises a screw rod and a sliding block; the screw rod penetrates through the lower beam and then is in threaded connection with the sliding block to form a screw rod sliding block mechanism; a second inclined surface matched with the first inclined surface is arranged on the sliding block; and the screw drives the second inclined surface to act on the first inclined surface, so that the lower end surface of the mounting plate enters the first sliding groove and locks the mounting plate, and the engine can be disassembled from the main frame by reversely rotating the screw.

Description

Technical Field

[0001] This utility model relates to the field of motorcycle technology, specifically to an easily disassembled motorcycle frame that is convenient for maintenance. Background Technology

[0002] Chinese utility model patents, CN220315206U (application date: June 28, 2023) and CN217048922U (application date: March 31, 2022), disclose "a detachable motorcycle frame" and "an electric motorcycle frame that can be quickly disassembled and folded." Both patents provide easily detachable motorcycle frames, which to some extent solve the problem of inconvenient maintenance.

[0003] However, the connection method between the motorcycle frame and the powertrain still severely restricts maintenance efficiency. In the existing technology, the engine is usually rigidly fixed to the main frame by welding or bolts. To repair the engine (such as crankshaft, piston and other parts), multiple bolts need to be removed to remove the engine from the main frame, which is time-consuming. After the repair, multiple bolts need to be reinstalled to fix the engine. Utility Model Content

[0004] The purpose of this invention is to provide an easily detachable motorcycle frame that is convenient for maintenance, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An easily detachable motorcycle frame for convenient maintenance includes a main frame. Two pairs of lower beams extending downwards from the main frame form a mounting space for the engine. The engine is detachably mounted on the lower beams via a pull-out locking mechanism, which includes:

[0007] The mounting plate is used to support and fix the engine, and the mounting plate slides in conjunction with the first groove on the lower beam.

[0008] The locking assembly is provided in two sets, and is symmetrical about the vertical symmetrical plane of the mounting plate. Each set includes a locking plate and a driving assembly.

[0009] The locking plate is slidably disposed in a direction perpendicular to the mounting plate, and the upper end surface of the locking plate is provided with a first inclined surface;

[0010] The drive assembly includes a screw and a slider;

[0011] The screw passes through the lower beam and is threadedly connected to the slider to form a screw-slider mechanism.

[0012] The slider is provided with a second inclined surface that cooperates with the first inclined surface;

[0013] The screw drives the second inclined surface to act on the first inclined surface, causing the lower end face of the mounting plate to enter the first groove and act on the mounting plate.

[0014] Preferably, a third inclined surface is provided on each of the opposite sides of the mounting plate, and a fourth inclined surface is provided on the lower end surface of the locking plate, which corresponds to and cooperates with the third inclined surface.

[0015] Preferably, the third inclined surface is provided with a first sawtooth and the fourth inclined surface is provided with a second sawtooth. The first sawtooth and the second sawtooth are adapted to each other and are arrayed along the length direction of their respective inclined surfaces.

[0016] Preferably, the front end face of the mounting plate is provided with a positioning plate, the lower beam is provided with a positioning groove, the thickness of the mounting plate is the same as the depth of the positioning groove, and the first saw tooth and the second saw tooth are corresponding when the mounting plate is completely located in the positioning groove.

[0017] Preferably, the lower beams are connected by a first connector, the first groove passes through the lower beam and the connector, and the connector is also provided with a second groove that is perpendicular to and communicates with the first groove. The locking plate is slidably disposed in the second groove by a first sliding guide rail.

[0018] Preferably, the second inclined surface on the slider is located in the second slide groove, and the lower part of the slider is slidably engaged with the second slide groove through the second sliding guide rail, and the upper part of the slider is slidably connected to the third slide groove through the third sliding guide rail. The third slide groove is opened on the second connecting member, and the second connecting member is fixedly connected to the opposite lower beam.

[0019] The central axis of the screw is located on the plane of symmetry between the second and third sliding guide rails.

[0020] Preferably, the screw is a bidirectional screw;

[0021] Each set of locking plates has two sets of first inclined surfaces, which are symmetrical about the mounting plate. Each set of locking plates has two sets of sliders, which are threadedly connected to different helical thread sections of the bidirectional screw.

[0022] Preferably, a spring is provided between the locking plate and the second slide groove to provide a restoring force to the locking plate.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] 1. A drive assembly, locking plate, and mounting plate are installed. A screw drives a slider to move, causing the second inclined surface to act on the first inclined surface. This allows the second serration on the lower end face of the mounting plate to enter the first groove and abut against and act on the first serration of the mounting plate. Under the combined action of the two symmetrically arranged locking assemblies, the mounting plate is locked and fixed. Conversely, the motor can be quickly disassembled. The engine can be disassembled and installed by operating the two sets of screws.

[0025] 2. The mounting plate is fixed by the interaction between the first sawtooth on the third inclined surface and the second sawtooth on the fourth inclined surface. The several sawtooth inclined surfaces in contact with each other are the force-bearing surfaces, which greatly increases the force-bearing area and avoids the problem of stress concentration that is easy to form in bolt connections. Attached Figure Description

[0026] Figure 1 A schematic diagram of the overall structure of this utility model;

[0027] Figure 2 A schematic diagram of the mounting plate being locked in the first groove of the lower beam in this utility model;

[0028] Figure 3 A schematic diagram of the engagement of the locking plate, slider, and mounting plate in this utility model (when not locked);

[0029] Figure 4 A schematic diagram of the engagement of the locking plate, slider, and mounting plate in this utility model (when locked);

[0030] Figure 5 A schematic diagram of the mounting plate in this utility model;

[0031] Figure 6 A schematic diagram of the slider in this utility model;

[0032] Figure 7 A schematic diagram of the locking plate in this utility model.

[0033] In the diagram: 1. Lower beam; 11. First slide groove; 12. Positioning groove; 2. Locking plate; 21. First inclined surface; 22. Fourth inclined surface; 23. Second serration; 24. Extension block; 3. Mounting plate; 31. Third inclined surface; 32. First serration; 4. Screw; 5. Slider; 51. Second inclined surface; 6. Positioning plate; 7. First connector; 71. Second slide groove; 8. Second connector; 9. Spring. Detailed Implementation

[0034] 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.

[0035] This utility model provides a technical solution:

[0036] participate Figure 1 , Figure 2 The present invention relates to an easily detachable motorcycle frame for convenient maintenance, comprising a main frame including a head tube (for mounting the front fork), a main beam, a lower beam 1, an upper beam (supporting and forming the mounting area for the fuel tank), and a rear swingarm pivot (for mounting the rear swingarm). This is prior art. The main improvement of this application is as follows:

[0037] Two pairs of lower beams 1 extending downwards from the main frame form the mounting space for the engine. The engine is detachably mounted on the lower beams 1 via a pull-out locking mechanism, which includes:

[0038] Mounting plate 3, the engine is fixedly connected to the mounting plate 3 by bolts, and the mounting plate 3 slides in fit with the first sliding groove 11 opened on the lower beam 1;

[0039] See Figure 3 , Figure 4 The locking assembly is provided in two sets, and is symmetrical about the vertical symmetrical surface of the mounting plate 3. Each set includes a locking plate 2 and a drive assembly.

[0040] Locking plate 2 is slidably set in a direction perpendicular to mounting plate 3 (i.e., as shown in the figure). Figure 2 (as shown in the Z direction), the upper end face of the locking plate 2 is provided with a first inclined surface 21;

[0041] The drive assembly includes a screw 4 and a slider 5;

[0042] After passing through the lower beam 1, the screw 4 is threadedly connected to the slider 5, forming a screw 4-slider 5 mechanism, which drives the slider 5 to move along the length of the locking plate 2 (i.e., as shown). Figure 2 Y direction shown);

[0043] See Figure 6 The slider 5 is provided with a second inclined surface 51 that cooperates with the first inclined surface 21. The angle between the first inclined surface 21, the second inclined surface 51 and the horizontal plane is selected in the range of 30 to 60 degrees.

[0044] The screw 4 drives the slider 5 to move, and then the second inclined surface 51 acts on the first inclined surface 21, so that the lower end surface of the mounting plate 3 enters the first sliding groove 11 and acts on the mounting plate 3, thereby achieving the locking and fixing of the mounting plate 3.

[0045] See Figure 5 , Figure 7 The mounting plate 3 has a third inclined surface 31 on each of its two opposite sides, and the lower end of the locking plate 2 has a fourth inclined surface 22 that corresponds to and cooperates with the third inclined surface 31; the angle between the third inclined surface 31, the fourth inclined surface 22 and the horizontal plane is selected within the range of 30 to 60 degrees.

[0046] The third inclined plane 31 is provided with a first sawtooth 32 and the fourth inclined plane 22 is provided with a second sawtooth 23. The first sawtooth 32 and the second sawtooth 23 are adapted to each other and are arrayed along the length direction of their respective inclined planes.

[0047] Driven by the screw 4, the first sawtooth 32 on the fourth inclined surface 22 at the lower end of the locking plate 2 of the two sets of locking components acts on the second sawtooth 23 on the mounting plate 3. On the one hand, the first sawtooth 32 and the second sawtooth 23 mesh, locking the displacement of the mounting plate 3 along the length direction of the first sliding groove 11 (i.e., locking the front and rear displacement of the mounting plate 3, such as...). Figure 2 (As shown in the Y direction), on the other hand, it generates a component force perpendicular to the surface of the mounting plate 3 and a component force parallel to the surface of the mounting plate 3. The former locks the vertical displacement of the mounting plate 3, and the latter locks its horizontal left-right displacement (as shown in the Y direction). Figure 2 (as shown in the X direction), thereby achieving a more stable locking and fixing of the mounting plate 3.

[0048] See Figure 1 The front end face of the mounting plate 3 is provided with a positioning plate 6, and the lower beam 1 is provided with a positioning groove 12. The thickness of the mounting plate 3 is the same as the depth of the positioning groove 12, and the mounting plate 3 is configured such that when the mounting plate 3 is completely located in the positioning groove 12, the first saw tooth 32 and the second saw tooth 23 correspond to each other; that is, during the installation process, the mounting plate 3 is pushed in along the first sliding groove 11 until the mounting plate 3 is completely located in the mounting groove (that is, the outer surface of the mounting plate 3 is flush with the outer surface of the lower beam 1). At this time, the first saw tooth 32 and the second saw tooth 23 can be engaged after they come together.

[0049] See Figure 2 The lower beams 1 are connected by a first connector 7. The first slide groove 11 passes through the lower beam 1 and the connector. The connector is also provided with a second slide groove 71 that is perpendicular to and connected to the first slide groove 11. The locking plate 2 is slidably set in the second slide groove 71 through the first sliding guide rail.

[0050] The second inclined surface 51 on the slider 5 is located in the second slide groove 71, and the lower part of the slider 5 is slidably engaged with the second slide groove 71 through the second sliding guide rail. The upper part of the slider 5 is slidably connected to the third slide groove through the third sliding guide rail. The third slide groove is opened on the second connecting member 8. The second connecting member 8 is fixedly connected to the opposite lower beam 1 (the second connecting member 8 is located directly above the first connecting member 7). The purpose of the upper and lower parts of the slider 5 being slidably connected through the third sliding guide rail and the second sliding guide rail is to increase the distance between the screw 4 and the upper end face of the locking plate 2, and to avoid interference between the locking plate 2 and the screw 4 during the reset process.

[0051] The first sliding guide rail, the second sliding guide rail, and the third sliding guide rail in this application all include a long strip of slide bar fixedly mounted on the slider 5 or the locking plate 2 and a corresponding guide rail, thereby ensuring the linearity of the movement of the slider 5 or the locking plate 2.

[0052] See Figure 3 , Figure 4 The central axis of the screw 4 is located on the plane of symmetry between the second and third sliding guide rails, thereby ensuring the stability of the slider 5 during movement, especially when it interacts with the locking plate 2.

[0053] The screw 4 is a bidirectional screw 4, that is, the screw 4 has threaded sections with only opposite directions of rotation at symmetrical positions;

[0054] Each set of locking plates 2 has two sets of first inclined surfaces 21, which are symmetrical about the mounting plate 3. Each set of locking plates 2 has two sets of sliders 5, which are threadedly connected to different helical thread sections of the bidirectional screw 4. That is, one set of sliders 5 is connected to the left-hand thread section, and the other set of sliders 5 is connected to the right-hand thread section.

[0055] The slider 5 is connected to different threaded sections of the bidirectional screw 4 to achieve synchronous relative or opposite movement of the slider 5, thereby acting synchronously on the locking plate 2.

[0056] A spring 9 is provided between the locking plate 2 and the second slide groove 71 to provide a restoring force to the locking plate 2 after the slider 5 is reset. The main function of the spring 9 is to provide a restoring force. Its specific position and connection relationship with the second slide groove 71 and the locking plate 2 are not limited. The specific arrangement of the spring 9 in this application is as follows: the spring 9 is a tension spring and is located in the second slide groove 71. One end of the spring 9 is fixedly connected to the top of the second slide groove 71, and the other end is fixedly connected to the extension block 24 provided on the side of the locking plate 2.

[0057] When using this utility model:

[0058] During the disassembly stage, rotating the screw 4 drives the two sets of sliders 5 on the same screw 4 to move away from each other, thereby releasing the restriction on the locking plate 2. The locking plate 2 rises and resets under the action of the spring 9, and then the second saw tooth 23 disengages from the meshing state with the first saw tooth 32 until the second saw tooth 23 is completely retracted into the second slide groove 71, and the mounting plate 3 is pulled outward to complete the work of removing the engine from the motorcycle frame.

[0059] During the installation phase, the mounting plate 3 is pushed in along the first slide groove 11 until the outer surface of the mounting plate 3 is flush with the outer surface of the lower beam 1. Then, the screw 4 is controlled to rotate, and the screw 4 drives the slider 5 to move. Consequently, the second inclined surface 51 acts on the first inclined surface 21, causing the second serration 23 on the lower end surface of the mounting plate 3 to enter the first slide groove 11 and abut against and act on the first serration 32 of the mounting plate 3. Under the combined action of the two sets of symmetrically arranged locking components, the mounting plate 3 is locked and fixed.

[0060] 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 easily detachable motorcycle frame for easy maintenance, comprising a main frame, wherein two pairs of downwardly extending lower beams (1) on the main frame form an engine mounting space, characterized in that: The engine is detachably mounted on the lower beam (1) via a pull-out locking mechanism, which includes: Mounting plate (3) is used to support and fix the engine. Mounting plate (3) is slidably engaged with the first sliding groove (11) opened on the lower beam (1). The locking assembly is provided in two sets and is symmetrical about the vertical symmetrical plane of the mounting plate (3), each including a locking plate (2) and a driving assembly; The locking plate (2) is slidably disposed in a direction perpendicular to the mounting plate (3), and the upper end surface of the locking plate (2) is provided with a first inclined surface (21); The drive assembly includes a screw (4) and a slider (5); The screw (4) passes through the lower beam (1) and is threadedly connected to the slider (5) to form a screw-slider mechanism; The slider (5) is provided with a second inclined surface (51) that cooperates with the first inclined surface (21); The screw (4) drives the second inclined surface (51) to act on the first inclined surface (21), so that the lower end face of the mounting plate (3) enters the first groove (11) and acts on the mounting plate (3).

2. The easily disassembled motorcycle frame for convenient maintenance according to claim 1, characterized in that, The mounting plate (3) has a third inclined surface (31) on each of its two opposite sides, and the lower end of the locking plate (2) has a fourth inclined surface (22) that corresponds to and cooperates with the third inclined surface (31).

3. The easily disassembled motorcycle frame for convenient maintenance according to claim 2, characterized in that, The third inclined plane (31) is provided with a first sawtooth (32) and the fourth inclined plane (22) is provided with a second sawtooth (23). The first sawtooth (32) and the second sawtooth (23) are adapted to each other and are arranged in an array along the length direction of their respective inclined planes.

4. The easily disassembled motorcycle frame for convenient maintenance according to claim 3, characterized in that, The mounting plate (3) has a positioning plate (6) on its front end face and a positioning groove (12) on its lower beam (1). The thickness of the mounting plate (3) is the same as the depth of the positioning groove (12). When the mounting plate (3) is completely located in the positioning groove (12), the first sawtooth (32) and the second sawtooth (23) correspond to each other.

5. The easily detachable motorcycle frame for easy maintenance according to claim 3, characterized in that, The lower beams (1) are connected by a first connector (7). The first groove (11) passes through the lower beam (1) and the connector. The connector is also provided with a second groove (71) that is perpendicular to and connected to the first groove (11). The locking plate (2) is slidably disposed in the second groove (71) by a first sliding guide rail.

6. The easily detachable motorcycle frame for easy maintenance according to claim 5, characterized in that, The second inclined surface (51) on the slider (5) is located in the second slide groove (71), and the lower part of the slider (5) is slidably engaged with the second slide groove (71) through the second sliding guide rail. The upper part of the slider (5) is slidably connected to the third slide groove through the third sliding guide rail. The third slide groove is opened on the second connector (8), and the second connector (8) is fixedly connected to the opposite lower beam (1). The central axis of the screw (4) is located on the plane of symmetry between the second sliding guide and the third sliding guide.

7. The easily detachable motorcycle frame for easy maintenance according to claim 6, characterized in that, The screw (4) is a bidirectional screw (4); Each set of locking plates (2) has two sets of first inclined surfaces (21) and is symmetrical about the mounting plate (3). Each set of sliders (5) corresponding to each set of locking plates (2) has two sets and are threadedly connected to different helical thread sections of the bidirectional screw (4).

8. The easily detachable motorcycle frame for easy maintenance according to claim 5, characterized in that, A spring (9) is provided between the locking plate (2) and the second slide groove (71) to provide a restoring force to the locking plate (2).

Images