Front frame and scooter

Abstract

The utility model discloses a front frame and scooter, and the front frame includes the inclined pipe and head pipe, and the head pipe includes the pipe body and connecting piece, and the connecting piece is arranged on the outer circumferential surface of the pipe body, and the connecting piece is embedded in the inclined pipe and is connected with the inclined pipe, and the pipe body is welded with the inclined pipe. The front frame provided by the utility model has the advantages of high connection reliability of the head pipe and the inclined pipe and low cracking risk at the connection.

Description

Technical Field

[0001] This utility model relates to the field of scooter technology, specifically to a front frame and a mobility scooter. Background Technology

[0002] In related technologies, the head tube of a scooter frame is usually directly welded to the slant tube, and after welding, a ring-shaped welding rod is usually formed between the two, encircling the slant tube. Alternatively, a reinforcing plate is welded between the head tube and the slant tube. However, both methods tend to create stress concentration points between the head tube and the slant tube, resulting in poor connection stability and easy cracking at the connection. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of this utility model propose a front frame that has the advantages of high reliability in the connection between the head tube and the slant tube, and low risk of cracking at the connection.

[0005] An embodiment of this utility model also proposes a mobility scooter.

[0006] The front frame of this utility model embodiment includes a slant tube and a head tube. The head tube includes a tube body and a connector. The connector is disposed on the outer peripheral surface of the tube body. The connector is embedded in the slant tube and connected to the slant tube. The tube body is welded to the slant tube.

[0007] According to the front frame of this utility model embodiment, while the head tube body is welded to the slant tube, a connector for the head tube is also embedded in the slant tube and connected to the slant tube. Thus, when the head tube of the front frame is impacted relative to the slant tube, the impact force will be synchronously transmitted to the connection between the connector and the slant tube, as well as the connection between the tube body and the slant tube, thereby effectively avoiding stress concentration at the connection between the tube body and the slant tube. The connection between the head tube and the slant tube has high reliability and low risk of cracking at the connection.

[0008] In some embodiments, the inclined tube has a connecting hole in its wall, the connector blocks the connecting hole, the surface of the connector opposite to the connecting hole is welded to the inclined tube, and a first weld block is formed between the connector and the inclined tube located in the connecting hole.

[0009] In some embodiments, the connecting hole is a strip-shaped hole, and the length direction of the connecting hole is orthogonal to the axial direction of the tube body.

[0010] In some embodiments, the inclined tube includes a left side plate and a right side plate opposite to each other in the left-right direction, and either the left side plate or the right side plate is provided with at least two of the connecting holes.

[0011] In some embodiments, the inclined tube includes a top plate, a left side plate, a bottom plate, and a right side plate connected end to end, wherein the left side plate, the right side plate, and the top plate are all welded to the tube body.

[0012] In some embodiments, the weld blocks formed between the left side plate and the pipe body, the weld blocks formed between the top plate and the pipe body, and the weld blocks formed between the right side plate and the pipe body are sequentially connected to form a U-shaped weld bar.

[0013] In some embodiments, the connector includes a left connecting plate and a right connecting plate spaced apart along the left-right direction of the inclined tube, and a portion of the base plate is located between the left connecting plate and the right connecting plate and connected to the tube body.

[0014] In some embodiments, the two opposite sides of the left connecting plate and the right connecting plate respectively fit and contact the two opposite sides of the left side plate and the right side plate.

[0015] In some embodiments, the connector further includes a support plate connected between the left connecting plate and the right connecting plate.

[0016] The mobility scooter according to an embodiment of the present invention includes a front frame as described in any of the above embodiments.

[0017] The technical advantages of the mobility scooter according to this utility model embodiment are the same as the technical advantages of the front frame in the above embodiment, and will not be repeated here. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the front frame according to an embodiment of the present utility model.

[0019] Figure 2 This is a schematic diagram of the front frame before welding according to an embodiment of the present utility model.

[0020] Figure 3 This is an exploded view of the front frame according to an embodiment of the present utility model.

[0021] Figure 4 This is a schematic diagram of the head tube in the front frame according to an embodiment of the present utility model.

[0022] Figure label:

[0023] 1. Head tube; 11. Tube body; 12. Connector; 121. Left connecting plate; 122. Right connecting plate; 123. Support plate; 2. Inclined tube; 21. Left side plate; 211. Connecting hole; 22. Top plate; 3. First welding block; 4. U-shaped welding rod; 5. First welding rod. Detailed Implementation

[0024] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0025] The following is combined with Figures 1-4 The front frame according to an embodiment of the present utility model is described.

[0026] The front frame of this utility model embodiment includes a slant tube 2 and a head tube 1. The head tube 1 includes a tube body 11 and a connector 12. The connector 12 is disposed on the outer circumferential surface of the tube body 11. The connector 12 is embedded in the slant tube 2 and connected to the slant tube 2. The tube body 11 is welded to the slant tube 2.

[0027] According to the front frame of this utility model embodiment, while the tube body 11 of the head tube 1 is welded to the inclined tube 2, a connector 12 of the head tube 1 is also provided and embedded in the inclined tube 2 and connected to the inclined tube 2. Thus, when the head tube 1 of the front frame is impacted relative to the inclined tube 2, the impact force will be synchronously transmitted to the connection between the connector 12 and the inclined tube 2 as well as the connection between the tube body 11 and the inclined tube 2, thereby effectively avoiding stress concentration at the connection between the tube body 11 and the inclined tube 2. The connection between the head tube 1 and the inclined tube 2 has high reliability and low risk of cracking at the connection.

[0028] It should be noted that the connector 12 is welded to the tube body 11. The connector 12 extends into the inclined tube 2 from the front opening of the inclined tube 2, and completes the connection between the connector 12 and the inclined tube 2. At this time, the inclined tube 2 and the tube body 11 abut against each other to facilitate welding. At this time, the connector 12 is basically hidden inside the inclined tube 2, which makes the front frame aesthetically pleasing.

[0029] In some embodiments, the wall of the inclined tube 2 is provided with a connection hole 211, the connector 12 blocks the connection hole 211, the surface of the connector 12 opposite to the connection hole 211 is welded to the inclined tube 2, and a first weld block 3 is formed between the connector 12 and the inclined tube 2 located in the connection hole 211.

[0030] That is, the connector 12 is embedded in the inclined tube 2, and after the inclined tube 2 abuts against the tube body 11, the surface of the connector 12 exposed through the connection hole 211 is welded to the inner wall of the connection hole 211. This makes the connection between the connector 12 and the inclined tube 2 convenient and reliable. Moreover, the first weld block 3 formed when welding the connector 12 and the inclined tube 2 is located in the connection hole 211, which effectively avoids the first weld block 3 protruding from the outer surface of the inclined tube 2 and increasing the probability of interference and detachment from the outside. The welding reliability between the inclined tube 2 and the connector 12 is high, and it also effectively improves the appearance of the front frame at this point.

[0031] For example, such as Figure 1 and Figure 3As shown, the first welding block 3 located inside the connecting hole 211 connects the inner wall surface of the connecting hole 211 and the surface of the connector 12 that seals the connecting hole 211. The outer surface of the first welding block 3 is lower than or flush with the outer surface of the inclined tube 2.

[0032] In some embodiments, the connecting hole 211 is a strip-shaped hole, and the length direction of the connecting hole 211 is orthogonal to the axial direction of the tube body 11.

[0033] At this time, the connection strength between the connector 12 and the inclined tube 2 is greater in the length direction of the connection hole 211 than in other directions. The connection between the connector 12 and the inclined tube 2 can better offset the stress that is most likely to cause cracking at the connection between the tube body 11 and the inclined tube 2. As a result, the connection reliability between the tube body 11 and the inclined tube 2 is higher, the connection between the two is less likely to split, the service life of the front frame is longer, and the riding safety of the scooter is higher.

[0034] For example, the connecting hole 211 is an oblong hole, and the first weld block 3 connecting the inner wall surface of the connecting hole 211 and the surface of the connector 12 fills the connecting hole 211.

[0035] It should be noted that the length direction of the connecting hole 211 can also form an acute or obtuse angle of approximately 90° with the axial direction of the tube body 11, such as an angle between 80° and 100°.

[0036] In some embodiments, the inclined tube 2 includes a left side plate 21 and a right side plate that are opposite each other in the left-right direction, and either the left side plate 21 or the right side plate is provided with at least two connecting holes 211.

[0037] This results in at least four discretely arranged connection points between the connector 12 and the inclined tube 2, thereby ensuring the strength of the inclined tube 2 while increasing the connection strength between the connector 12 and the inclined tube 2, improving the stress relief effect at the connection between the tube body 11 and the inclined tube 2, and extending the service life of the front frame.

[0038] For example, such as Figures 1-3 As shown, the left side plate 21 and the right side plate of the inclined tube 2 are arranged parallel to each other and mirror symmetrically. Both the left side plate 21 and the right side plate are provided with two connecting holes 211. The two connecting holes 211 of the left side plate 21 and the two connecting holes 211 of the right side plate are mirror symmetrically arranged, with a total of four connecting holes 211 adjacent to the end of the connector 12 away from the tube body 11.

[0039] It should be noted that the connection hole 211 can also be provided on the top plate 22 and / or bottom plate of the inclined tube 2.

[0040] In some embodiments, the inclined tube 2 includes a top plate 22, a left side plate 21, a bottom plate, and a right side plate connected end to end, and the left side plate 21, the right side plate, and the top plate 22 are all welded to the tube body 11.

[0041] This ensures a larger welding area between the tube body 11 and the inclined tube 2, resulting in higher connection strength, greater impact resistance at the connection point without cracking, and a longer service life for the front frame.

[0042] For example, the top plate 22, the left side plate 21 and the right side plate of the inclined tube 2 are all abutted and welded to the outer peripheral surface of the tube body 11.

[0043] In some embodiments, the weld blocks formed between the left side plate 21 and the pipe body 11, the weld blocks formed between the top plate 22 and the pipe body 11, and the weld blocks formed between the right side plate and the pipe body 11 are sequentially connected to form a U-shaped welding rod 4.

[0044] The U-shaped welding rod 4 seals the gap between each of the top plate 22, left side plate 21 and right side plate of the inclined tube 2 and the tube body 11, effectively reducing the entry of external moisture into the inclined tube 2 and affecting its service life. It also further increases the welding area between the tube body 11 and the inclined tube 2, resulting in a stronger connection and less susceptibility to cracking.

[0045] like Figure 1 and Figure 3 As shown, the weld block between the left side plate 21 and the pipe body 11 extends along the axial direction of the pipe body 11 to the upper and lower edges of the left side plate 21, the weld block between the right side plate and the pipe body 11 extends along the axial direction of the pipe body 11 to the upper and lower edges of the right side plate, and the weld block between the top plate 22 and the pipe body 11 extends along the left and right directions to the left and right edges of the top plate 22.

[0046] In some embodiments, the connector 12 includes a left connecting plate 121 and a right connecting plate 122 arranged at intervals along the left and right directions of the inclined tube 2, and a portion of the base plate is located between the left connecting plate 121 and the right connecting plate 122 and connected to the tube body 11.

[0047] This further increases the welding area between the inclined tube 2 and the tube body 11, resulting in a stronger connection that can withstand greater impacts without cracking. Furthermore, the weld block formed between the base plate and the tube body 11 is hidden between the left side plate 21 and the right side plate, making it less susceptible to deformation or breakage from external impacts. This further enhances the connection strength between the base plate and the tube body 11 and improves the aesthetics of the front frame at this location.

[0048] For example, such as Figure 1 and Figure 2 As shown, most of the left side plate 21 and the right side plate extend into the inclined tube 2, with a small portion located below the inclined tube 2.

[0049] In some embodiments, the opposite sides of the left connecting plate 121 and the right connecting plate 122 are respectively in contact with the opposite sides of the left side plate 21 and the right side plate.

[0050] At this time, the connector 12 and the inclined tube 2 are inserted and matched, which makes the limiting reliability of the two in the left and right directions higher. As a result, the impact on the weld between each of the tube body 11 and the connector 12 and the inclined tube 2 is smaller, and the weld is less likely to crack. The service life of the front frame is longer and the riding safety of the scooter is higher.

[0051] For example, such as Figures 1-3 As shown, the left connecting plate 121 and the right connecting plate 122 are parallel to each other. After they extend into the inclined tube 2, they abut against the left side plate 21 and the right side plate of the inclined tube 2, respectively, and also abut against the top plate 22 and the bottom plate of the inclined tube 2, respectively.

[0052] In some embodiments, the connector 12 further includes a support plate 123, which is connected between the left connecting plate 121 and the right connecting plate 122.

[0053] As a result, the structural strength of the connector 12 is higher, and its left connecting plate 121 and right connecting plate 122 are less likely to deform relative to the tube body 11 under external impact under the support of the support plate 123. The limiting reliability of the connector 12 and the inclined tube 2 in the left and right directions is higher.

[0054] For example, such as Figure 3 and Figure 4 As shown, the support plate 123 is generally an arc-shaped plate. The arc-shaped plate is located at the end of the left connecting plate 121 and the right connecting plate 122 away from the tube body 11, and the two ends of the arc-shaped plate are welded to the two opposite sides of the left connecting plate 121 and the right connecting plate 122, respectively.

[0055] The mobility scooter according to an embodiment of the present invention includes a front frame as described in any of the above embodiments.

[0056] The technical advantages of the mobility scooter according to this utility model embodiment are the same as the technical advantages of the front frame in the above embodiment, and will not be repeated here.

[0057] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0058] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0059] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0060] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0061] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0062] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A front frame, characterized in that, It includes an inclined tube (2) and a head tube (1). The head tube (1) includes a tube body (11) and a connector (12). The connector (12) is disposed on the outer circumferential surface of the tube body (11). The connector (12) is embedded in the inclined tube (2) and connected to the inclined tube (2). The tube body (11) is welded to the inclined tube (2).

2. The front frame according to claim 1, characterized in that, The inclined tube (2) has a connecting hole (211) on its wall. The connector (12) blocks the connecting hole (211). The surface of the connector (12) opposite to the connecting hole (211) is welded to the inclined tube (2). A first weld block (3) is formed between the connector (12) and the inclined tube (2) and is located in the connecting hole (211).

3. The front frame according to claim 2, characterized in that, The connecting hole (211) is a strip-shaped hole, and the length direction of the connecting hole (211) is orthogonal to the axial direction of the tube body (11).

4. The front frame according to claim 2, characterized in that, The inclined tube (2) includes a left side plate (21) and a right side plate opposite to each other in the left-right direction, and either the left side plate (21) or the right side plate is provided with at least two of the connecting holes (211).

5. The front frame according to any one of claims 1-4, characterized in that, The inclined tube (2) includes a top plate (22), a left side plate (21), a bottom plate and a right side plate connected end to end. The left side plate (21), the right side plate and the top plate (22) are all welded to the tube body (11).

6. The front frame according to claim 5, characterized in that, The weld blocks formed between the left side plate (21) and the pipe body (11), the weld blocks formed between the top plate (22) and the pipe body (11), and the weld blocks formed between the right side plate and the pipe body (11) are connected in sequence to form a U-shaped weld rod (4).

7. The front frame according to claim 6, characterized in that, The connector (12) includes a left connecting plate (121) and a right connecting plate (122) arranged at intervals along the left and right directions of the inclined tube (2), and a portion of the base plate is located between the left connecting plate (121) and the right connecting plate (122) and is connected to the tube body (11).

8. The front frame according to claim 7, characterized in that, The two opposite sides of the left connecting plate (121) and the right connecting plate (122) respectively fit and contact the two opposite sides of the left side plate (21) and the right side plate.

9. The front frame according to claim 7, characterized in that, The connector (12) further includes a support plate (123) which is connected between the left connecting plate (121) and the right connecting plate (122).

10. A mobility scooter, characterized in that, Includes the front frame as described in any one of claims 1-9.

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