Foldable labor-saving main standing frame of motorcycle

Abstract

A main standing frame body comprises a first supporting rod and a second supporting rod which are located on the left side and the right side, a pedal rod seat is arranged at the lower end of the first supporting rod, a connecting structure is arranged at the other end of the pedal rod seat, and the pedal rod seat is connected with a pedal rod in a matched mode through the connecting structure. The pedal rod rotates within a set angle range in the height direction of the first supporting rod; a spring is arranged between the pedal rod and the first supporting rod. The pedal rod can be folded after being rotated, so that the length is shortened; the maximum length of the pedal rod in the folded state is reduced, so that the structural arrangement around the main bracket is facilitated; in an extension state, the length of the main force arm is increased when the main bracket is supported, so that more labor is saved when the main bracket is supported; the force bearing point between the pedal rod and the main standing frame is changed to the position where the third matching face abuts against the first matching face, and the better labor-saving effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of motorcycle accessory parts, and particularly relates to a foldable labor-saving main stand of a motorcycle. BACKGROUND

[0002] With the development of motorcycles towards more functions and larger displacement, the overall weight of the motorcycle is also rapidly increasing; in order to meet the need of parking, the motorcycle is provided with a main stand to support the vehicle when parking, and the motorcycle rear wheel is usually suspended by the main stand when parking, the left and right legs of the main stand form a triangular structure with the front wheel to support the motorcycle. When parking the motorcycle, the driver pushes the main stand to move by stepping on the footrest rod, and at the same time supports the motorcycle with great effort, taking the supporting foot as the center, drives the whole vehicle upward and backward through the installation of the horizontal pipe (as a rotating shaft), so as to support the whole vehicle and lift the rear wheel of the motorcycle. In order to meet the need of supporting the motorcycle with larger weight, a longer footrest rod is needed to overcome the weight of the motorcycle itself, or the driver needs to exert more effort to push the motorcycle to move with the main stand, resulting in that the driver feels very tired when operating the motorcycle with slightly larger displacement, and the driver with poor physical strength feels very tired and has difficulty in operation.

[0003] In the prior art, such as Chinese utility model patent CN2794988Y, a "modified structure of a double-foot stand of a motorcycle and an electric bicycle", which comprises a double-foot support seat provided with a rotating shaft hole at the top end, and a footrest support leg provided on one side support rod at the root of the support seat, the double-foot support seat and the support leg are one-time bending stamping formed; the technical effect is that the footrest support leg is arranged at the root of the support seat, and compared with the prior art, the fulcrum is moved from the upper section of the support seat to the root, according to the principle of lever, the distance between the fulcrum and the force point is larger, it is more labor-saving, and the user only needs to exert a small force on the bottom plate of the support leg, and the vehicle can be lifted slightly, and the vehicle stand can be put down to support the vehicle body; however, due to the hard connection (welding and reinforcing rib) between the support leg and the support seat, although the labor-saving effect can be achieved by changing the position of the fulcrum, the length of the support leg is limited by the turning radius required for rotation, resulting in that the labor-saving effect is limited, and the parking operation is still inconvenient.

[0004] In order to support the motorcycle with larger weight by the main stand, the length of the footrest rod of the main stand needs to be lengthened to increase the length of the main driving arm of the main stand; if the length of the footrest rod is directly lengthened, the footrest part of the footrest rod is in contact with the ground in the main stand supporting state, which affects the parking stability, and at this time, the position of the footrest part needs to be raised along the support rod; the raising of the position of the footrest part will reduce the length of the main driving arm in the critical state of the main stand supporting, so that the main stand can be more labor-consuming. SUMMARY

[0005] In view of the above-mentioned deficiencies of the prior art, the utility model discloses a foldable labor-saving main stand frame of motorcycle, solves the contradiction between the main force arm length when the main stand frame is erected, makes the main stand frame realize the purpose of saving labor, and a second purpose is to adopt a folding structure to shorten the length of the footrest rod and facilitate the overall vehicle associated styling design.

[0006] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0007] A foldable labor-saving main stand frame of motorcycle, comprising a main stand frame body, the main stand frame body comprising first support rods and second support rods located on the left and right sides, characterized in that a footrest rod seat is arranged at the lower end of the first support rod, the other end of the footrest rod seat is provided with a connecting structure, the footrest rod is connected with the footrest rod seat through the connecting structure, and the footrest rod rotates in the set angle range along the height direction of the first support rod; a spring is arranged between the footrest rod and the first support rod to generate a spring force.

[0008] In this way, the footrest rod of the utility model can be folded after rotation to shorten the length; when the footrest rod of the main stand frame is in the folded state, the maximum length of the footrest rod is reduced, which is beneficial to the structural arrangement around the main stand frame and avoids the influence of the excessively long footrest rod on the surrounding structure; when the footrest rod of the main stand frame is in the elongated state, the length of the main driving force arm when the main stand frame is erected is increased, so that the main stand frame is more labor-saving when being erected. In addition, the utility model can change the stress point between the footrest rod and the main stand frame to the position when the third matching surface and the first matching surface abut against each other, and through the lever action, a more optimal labor-saving effect is achieved.

[0009] Further, the connecting structure of the footrest rod seat is provided with a center connecting block on the footrest rod seat, the center connecting block is provided with a pin hole, the left and right sides of the center connecting block are recesses, and the wall of the recess forms the first matching surface; the connecting end of the footrest rod is provided with a recessed groove in the middle part and is provided with a rotating pin hole in the diameter direction, the center connecting block is clamped into the recessed groove during connection, the pin hole and the rotating pin hole are opposite and communicate, and the rotating pin is inserted into the pin hole and the rotating pin hole to rotatably connect the footrest rod to one end of the footrest rod seat;

[0010] The corresponding parts of the footrest rod and the first matching surface of the recesses on the left and right sides of the center connecting block are provided with a second matching surface and a third matching surface, and the second matching surface and the third matching surface intersect to form an obtuse angle.

[0011] Further, when the downward force is applied, the foot pedal lever rotates downward around the rotating pin, and when the third matching surface on the lower side is abutted against the first matching surface, the foot pedal lever is limited to continue rotating downward, at this time, the foot pedal part provides force to make the whole main frame rotate and further support the vehicle; when the downward force is cancelled, the foot pedal lever rotates upward around the rotating pin under the action of the spring, and when the second matching surface on the upper side is abutted against the first matching surface, the foot pedal lever is limited to continue rotating upward, at this time, the foot pedal lever is in the folded state of the shortened length.

[0012] Further, the first supporting rod and the second supporting rod are arranged on the left and right sides of the connecting part.

[0013] Further, the rotating angle range of the foot pedal lever around the rotating pin is 10º-30º.

[0014] Further, the connecting structure of the foot pedal lever base is that the first connecting block and the connecting groove opposite to the first connecting block are arranged on the foot pedal lever base, the wall of the connecting groove forms the fourth matching surface, the second pin hole is arranged along the diameter direction of the first connecting block; the second connecting block and the matching groove are arranged on the connecting end of the foot pedal lever, the second connecting block is arranged along the diameter direction; when the foot pedal lever base is matched and connected with the foot pedal lever, the first connecting block is arranged in the matching groove, the second connecting block is arranged in the connecting groove, the second pin hole and the second rotating pin hole are correspondingly communicated, and the rotating pin is inserted to form the rotatable connecting structure.

[0015] The fifth matching surface and the sixth matching surface are arranged on the end surface of the foot pedal lever corresponding to the fourth matching surface, the fifth matching surface and the sixth matching surface intersect to form an obtuse angle greater than 90 degrees and less than 180 degrees.

[0016] Further, the rotating angle range of the foot pedal lever around the rotating pin is 10º-30º.

[0017] Further, the first supporting rod and the second supporting rod are arranged on the left and right sides of the connecting part.

[0018] Further, the supporting foot is a U-shaped groove, which is welded to the bottom end of the first supporting rod and the second supporting rod.

[0019] Further, after the foot pedal lever base is matched and connected with the foot pedal lever, the abutting surface is formed between the first connecting block and the second connecting block, and the abutting surface is a smooth surface.

[0020] The foldable labor-saving main frame of the motorcycle has the following beneficial effects compared with the prior art.

[0021] 1. The foot pedal rod of the utility model can be rotated to form folding and shorten the length; when the main support foot pedal rod is in the folding state, the maximum length of the foot pedal rod is reduced, which is beneficial to the structural arrangement around the main support and avoids the influence of the excessively long foot pedal rod on the surrounding structure;

[0022] 2. When the main support foot pedal rod is in the elongated state, the length of the main driving arm when the main support is raised is increased, so that the main support is more labor-saving when being raised;

[0023] 3. The foot pedal rod of the utility model takes the rotating pin as the rotation center, which can change the stress point between the foot pedal rod and the main support, and the stress point is changed to the position when the third matching surface and the first matching surface abut tightly, and through the lever action, a more optimal labor-saving effect is achieved.

[0024] 4. The foot pedal rod of the utility model takes the rotating pin as the rotation center, when the downward force is applied, the foot pedal rod rotates downward around the rotating pin, and when the third matching surface on the lower side abuts tightly with the first matching surface, the downward rotation of the foot pedal rod is limited; in this way, the rotation angle of the third matching surface when the third matching surface abuts tightly with the first matching surface (stress point) can be set, and when the third matching surface abuts tightly with the first matching surface (stress point), the lower end of the third matching surface is necessarily in the upward rotation state relative to the center line of the rotating pin, the vertical upward component force of the downward force applied at the stress point is larger; in addition, the inclination angle of the foot pedal rod downward is larger, the torque of the vertical upward component force is larger, the rear wheel of the vehicle is more easily lifted, and the labor-saving effect is more obvious. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic view of the main support of the utility model;

[0026] Figure 2 It is Figure 1 It is a partial enlarged structural schematic view of the connecting part of the foot pedal rod and the foot pedal rod seat;

[0027] Figure 3 It is Figure 2 It is a top view;

[0028] Figure 4 It is a schematic view of the foot pedal rod in the rotating state;

[0029] Figure 5 It is a schematic view of the second embodiment of the connecting structure of the foot pedal rod and the foot pedal rod seat of the utility model;

[0030] Figure 6 It is a schematic view of the main support and the motorcycle in use of the utility model.

[0031] In the figure: main station frame body - 1, connecting part - 2, installation horizontal pipe - 21, clamping part - 22, first support rod - 3, second support rod - 4, support foot - 5, foot pedal rod - 6, foot pedal part - 7, foot pedal rod seat - 10, center connecting block - 11, pin hole - 12, recess - 13, first matching surface - 14, embedded groove - 15, rotating pin hole - 16, rotating pin - 17, apex - 18, second matching surface - 19, third matching surface - 20, spring - 25, spring hanging pin - 26, first connecting block - 31, second pin hole - 32, connecting recess - 33, fourth matching surface - 34, second connecting block - 35, matching recess - 36, second rotating pin hole - 37, second apex - 38, fifth matching surface - 39, sixth matching surface - 40, abutting surface - 41. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0033] It should be noted that similar reference numerals and letters refer to similar items in the following drawings, and therefore, once an item is defined in one drawing, it is not necessary to further define and explain it in subsequent drawings. In the description of the present application, it should be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed during use, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance. In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. In the description of the present application, it should be explained that, unless otherwise explicitly specified and limited, the terms "provided", "mounted", "connected", "linked" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between the two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] For example, Figures 2-4As shown in the figure, a foldable power-saving main stand of a motorcycle comprises a main stand body 1, the main stand body 1 comprising a connecting part 2 at the upper part, the connecting part 2 being connected with the corresponding part of the motorcycle, the connecting part 2 comprising a mounting cross pipe 21 and a clamping part 22, further comprising a first supporting rod 3 and a second supporting rod 4 respectively arranged at the left and right sides, the upper ends of the first supporting rod 3 and the second supporting rod 4 arranged outwardly forming an "eight" shaped first supporting rod 3 and a second supporting rod 4, the lower ends of the first supporting rod 3 and the second supporting rod 4 being connected with the lower end of the connecting part 2; the bottom ends of the first supporting rod 3 and the second supporting rod 4 are provided with supporting feet 5, the supporting feet 5 being U-shaped grooves, as shown in the figure, the supporting feet 5 are welded at the bottom ends of the first supporting rod 3 and the second supporting rod 4, forming a stable structure for contacting and supporting the ground when parking; further comprising a footrest rod 6, the footrest rod 6 being fastened and connected at the lower part of the first supporting rod 3 or the second supporting rod 4, as shown in the figure, the footrest rod 6 is connected at the lower part of the first supporting rod 3, a foot pressing part 7 is arranged at the tail end of the footrest rod 6, when parking, the driver steps down the foot pressing part 7 with the foot, the footrest rod 6 is driven to rotate, the first supporting rod 3 is finally supported on the ground by the supporting feet 5 at the bottom ends of the first supporting rod 3 and the second supporting rod 4, the rear wheel of the motorcycle is suspended, the front wheel of the motorcycle forms a triangular relationship with the supporting feet 5 of the first supporting rod 3 and the supporting feet 5 of the second supporting rod 4, forming a relatively stable force receiving structure, so that the vehicle enters a parking state.

[0035] The improvement of the utility model is that a footrest rod seat 10 is arranged on the first supporting rod 3 or the second supporting rod 4, one end of the footrest rod seat 10 is connected with the lower end of the first supporting rod 3 or the second supporting rod 4, as shown in the figure, one end of the footrest rod seat 10 is connected with the first supporting rod 3, the other end is provided with a connecting structure, the footrest rod 6 is connected with the connecting structure, the footrest rod 6 rotates around the connecting structure in the height direction within a set angle range, as shown in the figure, the footrest rod 6 rotates in the height direction (axial direction) of the first supporting rod 3 within a set angle range; the footrest rod 6 rotates around the connecting part of the first supporting rod 3, forming folding and shortening the length.

[0036] The connecting structure of the footrest rod seat 10 can have various specific structures, such as Figure 2 、 3The first embodiment structure shown in Figs. 1-4 is the connecting structure of the connecting end of the foot pedal rod seat 10 and the foot pedal rod 6. A center connecting block 11 is arranged at the connecting end of the foot pedal rod seat 10. The center connecting block 11 is provided with a pin hole 12. The left and right sides of the center connecting block 11 are recesses 13. The wall of the recess 13 forms a first matching surface 14. The first matching surface 14 shown in the figure is a straight line segment. The position shown in the figure forms a vertical straight line segment after installation. The connecting end of the foot pedal rod seat 10 provided with the center connecting block 11 is matched with the foot pedal rod 6. The middle part of the connecting end of the foot pedal rod 6 is provided with an embedding groove 15. The embedding groove 15 can be a U-shaped groove and is provided with a rotating pin hole 16 in the diameter direction. When connected, the center connecting block 11 is clamped into the embedding groove 15. The pin hole 12 and the rotating pin hole 16 are opposite and in communication. The rotating pin 17 is inserted into the pin hole 12 and the rotating pin hole 16 to rotatably connect the foot pedal rod 6 to the end of the foot pedal rod seat 10.

[0037] The utility model divides the prior art foot pedal rod into two segments. One segment is the foot pedal rod seat 10 which is fixedly connected with the first support rod 3 and is a fixed segment. The other segment is the foot pedal rod 6 which is movably connected with the foot pedal rod seat 10.

[0038] The connecting end of the foot pedal rod 6 and the foot pedal rod base 10 is not a straight line formed plane with the corresponding part of the first matching surface 14 of the groove 13 on the left and right sides of the center connecting block 11, and the end face shape is provided with a second matching surface 19 and a third matching surface 20, and the second matching surface 19 and the third matching surface 20 intersect (or the intersection of the extension lines) to form an obtuse angle greater than 90 degrees and less than 180 degrees; as shown in the figure, the second matching surface 19 and the third matching surface 20 intersect to form a vertex 18, and the vertex 18 is on the left and right sides of the second matching surface 19 and the third matching surface 20; in this way, when the foot pedal rod 6 rotates around the rotating pin 17, the distance from the pin hole 12 to the first matching surface 14 and the distance between the vertex 18 of the foot pedal rod 6 and the first matching surface 14 are designed and adjusted in advance, when the driver applies a downward force (such as the foot pedal part 7 of the foot pedal rod 6), the foot pedal rod 6 rotates downward around the rotating pin 17, and when the third matching surface 20 on the lower side abuts against the first matching surface 14, the downward rotation of the foot pedal rod 6 is limited; similarly, when the downward force disappears and is no longer subjected to the downward force, the foot pedal rod 6 is subjected to the elastic force of the spring 25 and rotates upward around the rotating pin 17, and when the second matching surface 19 on the upper side abuts against the first matching surface 14, the upward rotation of the foot pedal rod 6 is limited; through the design, the rotation angle range of the foot pedal rod 6 around the rotating pin 17 is 10º-30º. In this way, the foot pedal rod 6 of the utility model can be folded and shortened when rotating upward, which is convenient for the overall arrangement of the vehicle; the foot pedal rod 6 can be lengthened and labor-saving when rotating downward, so that the length of the foot pedal rod 6 can be shortened accordingly. At the same time, the foot pedal rod 6 as a movable section and the fixed foot pedal rod base 10 have two limiting structures for upward and downward rotation, which can control the maximum straight position and the maximum folding position of the foot pedal rod 6, and ensure that the foot pedal rod 6 can only rotate between the positions limited by the set rotation angle range.

[0039] The rotatable foot pedal rod 6 of the utility model rotates around the center line of the rotating pin 17, and can also change the stress point between the foot pedal rod 6 and the main station frame during rotation to the position when the third matching surface 20 abuts against the first matching surface 14, and the stress point in the prior art is usually at the connecting point of the first supporting rod 3, which can achieve better labor-saving effect through lever action.

[0040] As Figure 5As shown, the second embodiment structure of the foot pedal rod seat 10 and the foot pedal rod 6 in cooperation with the connecting end of the foot pedal rod seat 10 and the foot pedal rod 6, the first connecting block 31 is arranged on the connecting end, the connecting groove 33 opposite to the first connecting block 31, the wall of the connecting groove 33 forms the fourth cooperation surface 34, and the second pin hole 32 is arranged in the diameter direction of the first connecting block 31; the second connecting block 35 and the cooperation groove 36 are arranged on the connecting end of the foot pedal rod 6, and the second rotating pin hole 37 is arranged on the second connecting block 35 in the diameter direction; when the foot pedal rod seat 10 and the foot pedal rod 6 are in cooperation, the first connecting block 31 is arranged in the cooperation groove 36, the second connecting block 35 is arranged in the connecting groove 33, the second pin hole 32 and the second rotating pin hole 37 are in correspondence and communication, the rotating pin 17 is inserted into the through hole to form a rotatable connecting structure; the fifth cooperation surface 39 and the sixth cooperation surface 40 are arranged on the end surface of the foot pedal rod 6 corresponding to the fourth cooperation surface 34, the end surface shape is not a straight line forming a plane, the fifth cooperation surface 39 and the sixth cooperation surface 40 meet (or the extension lines meet) at the second vertex 38, the fifth cooperation surface 39 and the sixth cooperation surface 40 on both sides of the second vertex 38 are respectively the fifth cooperation surface 39 and the sixth cooperation surface 40, and the fifth cooperation surface 39 and the sixth cooperation surface 40 meet to form an obtuse angle greater than 90 degrees and less than 180 degrees; in the figure, after the foot pedal rod seat 10 and the foot pedal rod 6 are in cooperation, the first connecting block 31 and the second connecting block 35 of the two form the abutting surface 41, the abutting surface 41 is a smooth surface, and the rotation of the foot pedal rod 6 is facilitated.

[0041] When the driver steps down the foot pedal 7 of the foot pedal rod 6, the foot pedal rod 6 rotates downward around the rotating pin 17, and when the third cooperation surface 20 on the lower side and the fourth cooperation surface 34 abut tightly, the downward rotation of the foot pedal rod 6 is limited; at this time, the power is continuously provided to the foot pedal, the whole main support frame is rotated and further supports the vehicle; similarly, when the downward force is no longer applied, the foot pedal rod 6 rotates upward around the rotating pin 17 under the action of the elastic force of the spring 25, and when the fifth cooperation surface 39 on the upper side and the fourth cooperation surface 34 abut tightly, the upward rotation of the foot pedal rod 6 is limited; through the design, the angle range of the rotation (rotation around the rotating pin 17) of the foot pedal rod 6 along the height direction of the first support rod 3 is 10º-30º.

[0042] The spring 25 is connected through the spring hanging pin 26, the foot pedal rod 6 is limited in the designed rotation angle range, and the abnormal noise of the foot pedal rod 6 due to vibration during the driving of the whole vehicle can be prevented.

[0043] The utility model discloses a motorcycle with the main stand, and through the process of standing up, the gravity center of the whole vehicle exists an upward and rearward acceleration process relative to the main stand foot; the utility model discloses a foldable (folding type) labor-saving main support, during the process of standing up of the main support, when the footrest rod contacts the ground, the instantaneous upward and rearward acceleration of the whole vehicle is utilized to make the main support completely stand up the whole vehicle; the utility model has the advantages of saving labor and convenient operation when standing up the motorcycle.

[0044] Finally, it needs to be explained that the above embodiments are only used to illustrate the technical solutions of the utility model and not to limit the technical solutions, and those skilled in the art should understand that the technical solutions of the utility model are modified or replaced equivalently without departing from the purpose and scope of the technical solutions, and all should be covered in the claim range of the utility model.

Claims

1. A foldable labor-saving main stand of a motorcycle, comprising a main stand body (1) including first support rods (3) and second support rods (4) on left and right sides, characterized in that, At the lower end of the first support rod (3), a footrest rod base (10) is arranged, and the other end of the footrest rod base (10) is provided with a connecting structure, which is connected with the footrest rod (6) in a matching mode, so that the footrest rod (6) rotates in a set angle range along the height direction of the first support rod (3); A spring (25) is arranged between the footrest rod (6) and the first support rod (3) to generate a spring force.

2. The foldable power-saving main stand of a motorcycle according to claim 1, characterized by, The connecting structure of the footrest rod base (10) is that a center connecting block (11) is arranged on the footrest rod base (10), the center connecting block (11) is provided with a pin hole (12), the left and right sides of the center connecting block (11) are recesses (13), and the wall of the recess (13) forms a first matching surface (14); The middle part of the connecting end of the footrest rod (6) is provided with an embedding groove (15), and a rotating pin hole (16) is arranged in the diameter direction; when connected, the center connecting block (11) is clamped into the embedding groove (15), the pin hole (12) is communicated with the rotating pin hole (16) in a matched mode, the rotating pin (17) is inserted into the pin hole (12) and the rotating pin hole (16), and the footrest rod (6) is rotatably connected to one end of the footrest rod base (10); The corresponding parts of the footrest rod (6) and the first matching surface (14) of the left and right sides of the center connecting block (11) are provided with a second matching surface (19) and a third matching surface (20), and the second matching surface (19) and the third matching surface (20) intersect to form an obtuse angle.

3. The foldable power-saving main stand of a motorcycle according to claim 2, characterized by, When a downward force is applied, the footrest rod (6) rotates downward around the rotating pin (17), and when the third matching surface (20) on the lower side abuts against the first matching surface (14), the downward rotation of the footrest rod (6) is limited; when the downward force disappears, the footrest rod (6) rotates upward around the rotating pin (17) under the action of the spring (25), and when the second matching surface (19) on the upper side abuts against the first matching surface (14), the upward rotation of the footrest rod (6) is limited.

4. The foldable labor-saving main stand of a motorcycle according to claim 1, characterized by, Further comprising a connecting part (2) located at the upper part, and the first support rod (3) and the second support rod (4) are arranged on the left and right sides of the connecting part (2) respectively.

5. The foldable power-assisted motorcycle main stand according to any one of claims 1 to 4, characterized in that, The angle range of the footrest rod (6) rotating along the height direction of the first support rod (3) is 10º-30º.

6. The foldable labor-saving main stand of a motorcycle according to claim 1, characterized by, The connecting structure of the footrest rod base (10) is that a first connecting block (31) and a connecting recess (33) opposite to the first connecting block (31) are arranged on the footrest rod base (10), the wall of the connecting recess (33) forms a fourth matching surface (34), and a second pin hole (32) is arranged in the diameter direction of the first connecting block (31); a second connecting block (35) and a matching recess (36) are arranged on the connecting end of the footrest rod (6) for matching connection, the second connecting block (35) is provided with a second rotating pin hole (37) in the diameter direction; when the footrest rod base (10) is matched and connected with the footrest rod (6), the first connecting block (31) is placed into the matching recess (36), the second connecting block (35) is placed into the connecting recess (33), the second pin hole (32) and the second rotating pin hole (37) are communicated in a corresponding mode, and the rotating pin (17) is inserted to form a rotatable connecting structure; A fifth cooperation surface (39) and a sixth cooperation surface (40) are arranged on the end surface of the footrest rod (6) corresponding to the fourth cooperation surface (34), and the fifth cooperation surface (39) and the sixth cooperation surface (40) intersect to form an obtuse angle.

7. The foldable power-saving main stand of a motorcycle according to claim 6, characterized in that, The angle range of the rotation of the footrest rod (6) along the height direction of the first support rod (3) is 10º-30º.

8. The foldable power-saving main stand of a motorcycle according to any one of claims 1 to 4, characterized in that, The first support rod (3) and the second support rod (4) are both provided with support feet (5).

9. The foldable power-saving main stand of a motorcycle according to claim 8, characterized in that, The support feet (5) are U-shaped grooves which are connected to the bottom ends of the first support rod (3) and the second support rod (4) by welding.

10. Foldable power-saving main stand for motorcycles according to claim 6 or 7, characterized in that, After the footrest rod seat (10) is connected with the footrest rod (6) in cooperation, a close surface (41) is formed between the first connecting block (31) and the second connecting block (35), and the close surface (41) is a smooth surface.

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