Rear cradle

Abstract

The utility model relates to the technical field of motorcycles, and discloses a rear cradle. The rear cradle comprises an outer side plate, an inner side plate and a pin column, a through hole is formed in the outer side plate; a cavity is defined by the inner side plate and the outer side plate. An insertion hole is formed in the inner side plate; the pin column comprises an abutting part and an extending part, the abutting part abuts against the side, away from the inner side plate, of the outer side plate, and the extending part sequentially penetrates through the penetrating hole and the inserting hole so that the extending part can be erected in the cavity; wherein the pin column is provided with a screw hole. The outer side plate is provided with the penetrating holes, the inner side plate is provided with the inserting holes, the extending parts of the pin columns penetrate through the penetrating holes and the inserting holes at the same time and are connected and fixed, the pin columns are supported and fixed by the outer side plate and the inner side plate at the same time, loads can be transmitted to the outer side plate and the inner side plate through the hole wall pin columns, and then the bearing capacity is improved; meanwhile, due to the fact that the hollow structure of the cavity defined by the inner side plate and the outer side plate is adopted, the machining cost of the rear cradle is greatly reduced, and the bearing capacity and the machining cost of the rear cradle are both considered.

Description

Technical Field

[0001] The utility model relates to the technical field of motorcycles, in particular to a rear cradle. Background Art

[0002] The rear cradle, also known as the rear fork, is a component of the motorcycle suspension. It is used to connect the motorcycle's rear wheel, body, frame, shock absorber and other parts, and plays a role in bearing the pressure of the body, fixing the rear wheel and maintaining the stability of the body. For medium and large displacement motorcycles, in order to avoid tire deformation during long-term parking, or to ensure the body is upright during maintenance, lifting nails and lifting frames are used. When using, you need to first install the lifting nails on the rear cradle, and then support the lifting nails with the lifting frame until the motorcycle is lifted up and the rear wheel is separated from the ground.

[0003] There are two main types of connection structures between the existing rear cradle and the starting pin. The first type uses a pin with a screw hole welded on the bottom of the rear cradle, and the second type uses a screw hole directly processed on the rear cradle. The first method will cause the pin to be exposed, and the welding point will bear the entire load, resulting in poor bearing capacity and unsightly appearance, but its advantage is low cost. Although the second method solves the problem of aesthetics and improved bearing capacity, directly processing the screw hole on the rear cradle requires the rear cradle to adopt a solid structure, resulting in high structural cost. Utility Model Content

[0004] The technical problems to be solved by the utility model are:

[0005] The connection structure between the rear swing frame and the starting pin cannot take into account both the load-bearing capacity and the production cost.

[0006] In order to solve the above technical problems, the utility model provides a rear cradle, comprising:

[0007] An outer plate, wherein the outer plate is provided with perforations;

[0008] An inner plate connected to the outer plate, the inner plate and the outer plate together form a cavity; the inner plate is provided with a plug hole corresponding to the through hole; and

[0009] A pin, the pin comprising an abutting portion and an extending portion, the abutting portion abuts against a side of the outer plate away from the inner plate, the extending portion sequentially passes through the through hole and the insertion hole, and the extending portion is respectively connected to the outer plate and the inner plate to mount the extending portion in the cavity;

[0010] Wherein, a screw hole is arranged on the pin, and the screw hole is extended from the abutting portion toward the inner direction of the extending portion.

[0011] In one embodiment, the extension portion is in a cylindrical structure, the abutment portion is in a straight plate shape and is arranged at one end of the extension portion close to the outer plate, and the outer edge of the abutment portion is protruding from the outer side of the extension portion.

[0012] In one embodiment, the screw hole is in the shape of a circular through hole, and the screw hole passes through the abutting portion and the extending portion.

[0013] In one embodiment, a central axis of the screw hole is colinear with a central axis of the extension portion.

[0014] In one of the embodiments, the rear cradle further includes a first welding strip; the first welding strip is disposed in the cavity, and the first welding strip connects the outer plate and the extension portion.

[0015] In one of the embodiments, the rear cradle further includes a second welding strip; the second welding strip is disposed on a side of the inner plate away from the outer plate, and the second welding strip connects the inner plate and the extension portion.

[0016] In one embodiment, the outer panel includes a panel portion, a first hook portion and a second hook portion; the perforation is arranged on the panel portion, the first hook portion and the second hook portion are relatively arranged on both sides of the panel portion, and the first hook portion and the second hook portion are both extended from the panel portion toward the direction close to the inner panel.

[0017] In one embodiment, the inner side plate includes a vertical plate portion, a first connecting portion and a second connecting portion; the insertion hole is arranged on the vertical plate portion, the first connecting portion and the second connecting portion are arranged on both sides of the vertical plate portion opposite to each other, the first connecting portion is connected to the first hooking portion, and the second connecting portion is connected to the second hooking portion.

[0018] In one embodiment, the panel portion and the vertical plate portion are both arranged in a straight plate-shaped structure, the panel portion is parallel to the vertical plate portion, and the abutting portion abuts against a side of the panel portion away from the vertical plate portion.

[0019] In one of the embodiments, an extending direction of the extending portion is perpendicular to an extending plane where the panel portion is located.

[0020] Compared with the prior art, the above rear cradle has the following beneficial effects:

[0021] By setting a perforation on the outer plate and a socket on the inner plate, the extension of the pin is passed through the perforation and the socket at the same time and connected and fixed, so that the outer plate and the inner plate can simultaneously support and fix the pin, and the load can be transferred to the outer plate and the inner plate through the hole wall pin, thereby improving the bearing capacity; at the same time, due to the hollow structure of the inner plate and the outer plate enclosing the cavity, the processing cost of the rear cradle is greatly reduced, thereby taking into account the bearing capacity and processing cost of the rear cradle, and the pin is set in the cavity, the pin is effectively hidden to avoid exposure, and the overall structure is more beautiful. By setting the cavity, the weight of the rear cradle can be effectively reduced, thereby reducing the overall suspension weight and improving the overall performance of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a rear cradle according to an embodiment of the utility model;

[0023] Figure 2 for Figure 1 A partial enlarged schematic diagram of the middle and rear cradle;

[0024] Figure 3 for Figure 1 A schematic cross-sectional view of the middle and rear cradle;

[0025] Figure 4 for Figure 1 A schematic cross-sectional view of the middle and outer plates;

[0026] Figure 5 for Figure 1 Schematic cross-sectional view of the center inner panel.

[0027] The meanings of the numbers in the accompanying drawings are:

[0028] 100, rear cradle;

[0029] 10. outer side plate; 11. panel portion; 12. first hooking portion; 13. second hooking portion; 15. perforation;

[0030] 20. inner side plate; 21. vertical plate portion; 22. first connecting portion; 23. second connecting portion; 25. insertion hole; 26. cavity;

[0031] 30. pin; 31. abutment portion; 32. extension portion; 35. screw hole;

[0032] 40. first welding strip;

[0033] 50. Second welding strip. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0040] See also Figures 1 to 5 , is a rear cradle 100 of an embodiment of the utility model, comprising an outer plate 10, an inner plate 20 and a pin 30. The outer plate 10 is provided with a through hole 15. The inner plate 20 is connected to the outer plate 10, and the inner plate 20 and the outer plate 10 are surrounded to form a cavity 26; the inner plate 20 is provided with a plug hole 25 corresponding to the through hole 15. The pin 30 includes an abutment portion 31 and an extension portion 32, the abutment portion 31 abuts against the side of the outer plate 10 away from the inner plate 20, and the extension portion 32 passes through the through hole 15 and the insertion hole 25 in sequence, and the extension portion 32 connects the outer plate 10 and the inner plate 20 respectively, so that the extension portion 32 is erected in the cavity 26; by passing the extension portion 32 through the through hole 15 and the insertion hole 25, the extension portion 32 is effectively supported by the hole wall, and then the extension portion 32 is erected in the cavity 26, and at the same time, the impact load is transmitted from the pin 30 to the outer plate 10 and the inner plate 20, thereby improving the bearing capacity of the overall structure, and by setting the cavity 26 between the inner plate 20 and the outer plate 10 to form a hollow structure, thereby reducing the processing cost of the rear cradle 100. The pin 30 is provided with a screw hole 35 , which is extended from the abutment portion 31 toward the inside of the extension portion 32 . The screw hole 35 is used to ensure that the pin 30 can be connected to an external starting nail.

[0041] Furthermore, the outer panel 10 is correspondingly installed on the outer side of the motorcycle, that is, the outer panel 10 of the motorcycle is on the outer surface of the motorcycle and can be observed with the naked eye, and the corresponding inner panel 20 faces the inner side of the motorcycle, and the motorcycle needs to be disassembled before the inner panel 20 can be observed.

[0042] Furthermore, the outer side plate 10 includes a panel portion 11, a first hooking portion 12 and a second hooking portion 13. The panel portion 11 is in the shape of a straight plate, and is correspondingly arranged on the outer side of the rear cradle 100, i.e., the outer surface of the motorcycle. The through hole 15 is arranged on the panel portion 11, and the through hole 15 is in the shape of a circular through hole penetrating the panel portion 11; the first hooking portion 12 and the second hooking portion 13 are arranged on both sides of the panel portion 11, and the first hooking portion 12 and the second hooking portion 13 are both extended from the panel portion 11 to the direction close to the inner side plate 20. In this embodiment, the first hooking portion 12 and the second hooking portion 13 are perpendicular to the panel portion 11, so that the outer side plate 10 is arranged in a "U"-shaped structure.

[0043] Furthermore, the inner side plate 20 includes a vertical plate portion 21, a first connecting portion 22 and a second connecting portion 23. The vertical plate portion 21 is in a straight plate shape, and is arranged on the inner side of the rear cradle 100, that is, the side of the rear cradle 100 close to the rear wheel. The plug hole 25 is arranged on the vertical plate portion 21, and the plug hole 25 is in a circular through hole shape and penetrates the vertical plate portion 21; the first connecting portion 22 and the second connecting portion 23 are arranged on both sides of the vertical plate portion 21 opposite to each other, and the first connecting portion 22 and the second connecting portion 23 are both extended from the vertical plate portion 21 to the direction close to the outer side plate 10, and the first connecting portion 22 is connected to the first hooking portion 12, and the second connecting portion 23 is connected to the second hooking portion 13, so that the inner side plate 20 and the outer side plate 10 are surrounded to form a cavity 26. In this embodiment, the first connecting portion 22 and the second connecting portion 23 are perpendicular to the vertical plate portion 21, so that the inner plate 20 is arranged in a "U"-shaped structure, and then the inner plate 20 and the outer plate 10 are both arranged with "U"-shaped openings facing each other, so that the two ends of the outer plate 10 and the two ends of the inner plate 20 are overlapped and welded to each other, thereby forming a cavity 26, thereby reducing the material cost of the rear rocker 100.

[0044] Further, the abutment portion 31 is in the shape of a straight plate, and is disposed at one end of the extension portion 32 close to the outer plate 10. The abutment portion 31 abuts against the side of the panel portion 11 away from the vertical plate portion 21 to locate the position of the pin 30 inserted into the cavity 26. The extension portion 32 is in the shape of a cylinder, and extends from the abutment portion 31 toward the vertical plate portion 21. The outer edge of the abutment portion 31 is convexly disposed on the outer side of the extension portion 32 to ensure that when the extension portion 32 passes through the through hole 15, the abutment portion 31 abuts against the peripheral position of the through hole 15. In this embodiment, the panel portion 11 is parallel to the vertical plate portion 21, and the extension direction of the extension portion 32 is perpendicular to the extension plane where the panel portion 11 is located. The extension direction of the extension portion 32 refers to the direction of the central axis of the cylindrical extension portion 32. By arranging the panel portion 11 parallel to the vertical plate portion 21 and arranging the extension portion 32 perpendicular to the panel portion 11, it is ensured that the support force provided by the inner panel 20 and the outer panel 10 to the extension portion 32 is balanced. At the same time, the load transmitted to the outer panel 10 and the inner panel 20 by the pin 30 is also balanced, the overall structure is more evenly stressed, and the stability of the overall structure is improved.

[0045] Furthermore, the screw hole 35 is in the shape of a circular through hole, and the screw hole 35 passes through the abutment portion 31 and the extension portion 32, and the central axis of the screw hole 35 is colinear with the central axis of the extension portion 32. By setting the screw hole 35 on the pin 30 in a through structure, air is prevented from being trapped in the screw hole 35. During the electrophoresis process of the pin 30, it can be ensured that the coating covers the entire screw hole 35, thereby improving the anti-corrosion performance of the pin 30 and extending the service life of the pin 30. In addition, during use, muddy water in the screw hole 35 is easily discharged and will not be accumulated in the pin 30, so there is no need to add covering parts such as rubber plugs, thereby reducing costs.

[0046] Furthermore, the rear cradle 100 further includes a first welding strip 40. The first welding strip 40 is disposed in the cavity 26, the first welding strip 40 connects the outer plate 10 and the extension portion 32, the first welding strip 40 is disposed in a circular ring shape around the outer side of the extension portion 32, and the first welding strip 40 is disposed on a side of the panel portion 11 close to the vertical plate portion 21, that is, the welding position of the pin 30 and the outer plate 10 is located in the cavity 26, thereby avoiding the welding position from being exposed, and being more beautiful. Furthermore, the rear cradle 100 further includes a second welding strip 50. The second welding strip 50 is arranged on the side of the inner panel 20 away from the outer panel 10. The second welding strip 50 connects the inner panel 20 and the extension portion 32. The second welding strip 50 is arranged in a circular ring shape around the outer side of the extension portion 32, that is, the welding position of the pin 30 and the inner panel 20 is located on the side of the rear cradle 100 close to the wheel, thereby avoiding direct exposure of the welding position. The welding position of the inner panel 20 and the pin 30 will be exposed only after the wheel is disassembled, making the whole vehicle more beautiful after assembly.

[0047] In summary, the embodiment of the utility model provides a rear cradle 100, by setting a through hole 15 on the outer plate 10 and setting a plug hole 25 on the inner plate 20, the extension part 32 of the pin 30 is passed through the through hole 15 and the plug hole 25 at the same time and connected and fixed, so that the outer plate 10 and the inner plate 20 can simultaneously support and fix the pin 30, and the load can be transferred to the outer plate 10 and the inner plate 20 through the hole wall pin 30, thereby improving the bearing capacity; at the same time, due to the hollow structure of the inner plate 20 and the outer plate 10 enclosing the cavity 26, the processing cost of the rear cradle 100 is greatly reduced, thereby taking into account the bearing capacity and processing cost of the rear cradle 100, and the pin 30 is set in the cavity 26, the pin 30 is effectively hidden to avoid exposure, and the overall structure is more beautiful. By setting the cavity 26, the weight of the rear cradle 100 can be effectively reduced, thereby reducing the overall suspension weight and improving the overall performance of the vehicle.

[0048] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A rear cradle, characterized in that: include: An outer plate, wherein the outer plate is provided with perforations; An inner plate connected to the outer plate, the inner plate and the outer plate together form a cavity; the inner plate is provided with a plug hole corresponding to the through hole; and A pin, the pin comprising an abutting portion and an extending portion, the abutting portion abuts against a side of the outer plate away from the inner plate, the extending portion sequentially passes through the through hole and the insertion hole, and the extending portion is respectively connected to the outer plate and the inner plate to mount the extending portion in the cavity; Wherein, a screw hole is arranged on the pin, and the screw hole is extended from the abutting portion toward the inner direction of the extending portion.

2. The rear cradle according to claim 1, characterized in that: The extension part is in a cylindrical structure, the abutment part is in a straight plate shape and is arranged at one end of the extension part close to the outer plate, and the outer edge of the abutment part is protruding from the outer side of the extension part.

3. The rear cradle according to claim 2, characterized in that: The screw hole is in the shape of a circular through hole, and the screw hole passes through the abutting portion and the extending portion.

4. The rear cradle according to claim 3, characterized in that: A central axis of the screw hole is collinear with a central axis of the extension portion.

5. The rear cradle according to claim 1, characterized in that: The rear cradle further includes a first welding strip; the first welding strip is disposed in the cavity, and the first welding strip connects the outer plate and the extension portion.

6. The rear cradle according to claim 5, characterized in that: The rear cradle further includes a second welding strip; the second welding strip is arranged on a side of the inner plate away from the outer plate, and the second welding strip connects the inner plate and the extension portion.

7. The rear cradle according to claim 1, characterized in that: The outer plate includes a panel portion, a first hook portion and a second hook portion; the perforation is arranged on the panel portion, the first hook portion and the second hook portion are relatively arranged on both sides of the panel portion, and the first hook portion and the second hook portion are both extended from the panel portion toward the inner plate.

8. The rear cradle according to claim 7, characterized in that: The inner side plate includes a vertical plate portion, a first connecting portion and a second connecting portion; the insertion hole is arranged on the vertical plate portion, the first connecting portion and the second connecting portion are arranged on both sides of the vertical plate portion opposite to each other, the first connecting portion is connected to the first hooking portion, and the second connecting portion is connected to the second hooking portion.

9. The rear cradle according to claim 8, characterized in that: The panel portion and the vertical plate portion are both arranged in a straight plate-shaped structure, the panel portion is parallel to the vertical plate portion, and the abutting portion abuts against a side of the panel portion away from the vertical plate portion.

10. The rear cradle according to claim 9, characterized in that: An extending direction of the extending portion is perpendicular to an extending plane where the panel portion is located.

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