Box body and frame connecting structure and tricycle with box body

Abstract

The utility model relates to the technical field of tricycles, and discloses a box body and frame connecting structure and a tricycle with a box body. The connecting structure of the box body and the frame comprises a front support, a connecting base and a frame body, the front support is fixed to the bottom of the box body, and a mounting plate is arranged on the lower surface of the front support; the connecting seat comprises a fixing part, a limiting part and a bearing part, the fixing part is fixedly connected with the mounting plate, the limiting part and the bearing part are oppositely arranged at an interval, and a rotating shaft is arranged between the limiting part and the bearing part; and a head pipe is arranged at the front end of the frame main body, extends between the limiting part and the bearing part, and is arranged on the rotating shaft in a sleeving manner, so that the frame main body can rotate around the rotating shaft. According to the tricycle with the box body, the frame main body and the front support are rotationally connected through the connecting seat, the head tube of the frame main body is limited, the situation that the service life of the rotating shaft is affected due to the situations of shifting, twisting and the like at the rotating connecting position is avoided, and the stability of the overall structure is improved while flexible steering of the formed tricycle with the box body is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tricycle technical field, especially a connecting structure of box and frame and tricycle with box. BACKGROUND

[0002] The reverse tricycle belongs to a deformation structure of tricycle, the front wheel has left and right wheels, the rear wheel has one wheel, and the reverse tricycle can be installed with a front box to meet the needs of carrying objects or children.

[0003] Because of the existence of the box, the rotation of the front wheel will be disturbed, so the box, the front wheel and the handlebar are rotated as a whole relative to the frame to realize steering. The rotating part is generally connected by a rotating shaft, but under the conditions of overloading, sudden braking and frequent steering, the rotating shaft is prone to breakage and has a low service life, the vehicle body is unstable and has safety hazards, so it needs to be improved. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a connecting structure of box and frame and tricycle with box to solve the problems in the above background technology and ensure the stability of the whole vehicle structure and accurate steering.

[0005] To achieve the above purpose, on the one hand, the utility model adopts the following technical scheme:

[0006] A connecting structure of box and frame, comprising a front support, a connecting seat and a frame main body, wherein:

[0007] The front support is fixed to the bottom of the box, and the lower surface of the front support is provided with a mounting plate;

[0008] The connecting seat comprises a fixed part, a limiting part and a bearing part, the fixed part is fixedly connected with the mounting plate, the limiting part and the bearing part are arranged in a spaced and opposite manner, and a rotating shaft is arranged between the limiting part and the bearing part;

[0009] The front end of the frame main body is provided with a head tube, the head tube extends between the limiting part and the bearing part, and the head tube is sleeved on the rotating shaft, so that the frame main body can rotate around the rotating shaft.

[0010] As an optional scheme, the limiting part extends from the fixed part and extends above the fixed part, the bearing part extends from the fixed part and extends below the fixed part, and the fixed part is provided with a avoiding opening for installing the head tube;

[0011] Two connecting pipes are arranged between the bearing part and the fixed part, the two connecting pipes are located on the two sides of the avoiding opening, and the two connecting pipes are used to limit the rotation angle of the frame main body.

[0012] As an alternative, a welding piece is arranged on the frame body, the welding piece extends out of both sides of the frame body, mounting brackets are arranged on the two connecting pipes respectively, and a damping rod is arranged on the welding piece of each side and connected with the mounting bracket of the corresponding side.

[0013] As an alternative, a reinforcing pipe is arranged between the fixing part and the bearing part.

[0014] As an alternative, a notch for avoiding the limiting part is arranged on the mounting plate.

[0015] As an alternative, the outer edge shape of the fixing part is the same as that of the mounting plate, the fixing part is attached to the mounting plate and fixed by the clamping piece.

[0016] As an alternative, fixing holes are arranged on the clamping piece, the mounting plate and the fixing part respectively.

[0017] As an alternative, the frame body comprises an inner pipe and an outer pipe, the inner pipe is arranged in the outer pipe, a triangular rib is arranged between the inner pipe and the outer pipe, and reinforcing ribs are arranged on the outer surface of the outer pipe.

[0018] On the other hand, the utility model adopts the following technical scheme:

[0019] A tricycle with a box body adopts the connecting structure of the box body and the frame.

[0020] The utility model has the advantages of:

[0021] The connecting structure of the box body and the frame realizes the rotary connection of the frame body and the front support through the connecting seat, limits the head tube of the frame body, avoids the movement and distortion at the rotary connection to affect the service life of the rotary shaft, and thus the tricycle with the box body ensures the flexible turning and improves the stability of the overall structure. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is the first perspective view of the connecting structure of the box body and the frame provided by the utility model embodiment;

[0023] Figure 2 is the second perspective view of the connecting structure of the box body and the frame provided by the utility model embodiment;

[0024] Figure 3 is the explosion view of the connecting structure of the box body and the frame provided by the utility model embodiment;

[0025] Figure 4 is the structure schematic view of the connecting seat in the connecting structure of the box body and the frame provided by the utility model embodiment;

[0026] Figure 5 isFigure 3 Enlarged view at A;

[0027] Figure 6 Is the structure schematic diagram of tricycle with box body provided by the embodiment of the utility model.

[0028] In the drawings:

[0029] 1, front support; 11, mounting plate;

[0030] 2, connecting seat; 21, fixed part; 22, limiting part; 23, bearing part; 24, avoiding mouth; 25, connecting pipe; 26, reinforcing pipe; 27, mounting support; 28, fixed hole;

[0031] 3, frame main body; 31, head tube; 32, welding piece; 33, inner tube; 34, outer tube; 35, triangular rib; 36, reinforcing rib;

[0032] 4, rotating shaft;

[0033] 5, damping rod;

[0034] 6, clamping piece. DETAILED DESCRIPTION

[0035] The utility model will be further explained in detail below in combination with the drawings and examples.It can be understood that the specific examples described here are only used to explain the utility model, and not limited to the utility model.In addition, it should be noted that in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0036] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated;It can be mechanical connection, or electrical connection;It can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements or the interaction relationship of two elements.For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0037] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through other feature between them. Moreover, first feature "on", "above" and "upper surface of" second feature includes that first feature is directly above and obliquely above second feature, or only indicates that horizontal height of first feature is higher than second feature. First feature "under", "below" and "under surface of" second feature includes that first feature is directly below and obliquely below second feature, or only indicates that horizontal height of first feature is less than second feature.

[0038] In the description of the embodiment, the terms "upper", "lower", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model.

[0039] In addition, the terms "first", "second" and the like are only used for differentiation in description, and have no special meaning.

[0040] Please refer to Figures 1 to 6 As shown in the figure, the embodiment provides a connecting structure of box body and frame, which comprises front support 1, connecting seat 2 and frame body 3, wherein:

[0041] The front support 1 is fixed with the bottom of the box body, and the lower surface of the front support 1 is provided with a mounting plate 11;

[0042] The connecting seat 2 comprises a fixed part 21, a limiting part 22 and a bearing part 23, the fixed part 21 is fixedly connected with the mounting plate 11, the limiting part 22 and the bearing part 23 are oppositely arranged and spaced, and a rotating shaft 4 is arranged between the limiting part 22 and the bearing part 23;

[0043] The front end of the frame body 3 is provided with a head tube 31, the head tube 31 extends into the limiting part 22 and the bearing part 23, and the head tube 31 is sleeved on the rotating shaft 4, so that the frame body 3 can rotate around the rotating shaft 4.

[0044] Therefore, the rotating connection of the frame body 3 and the front support 1 is realized through the connecting seat 2, the head tube 31 of the frame body 3 is limited, and the service life of the rotating shaft 4 is affected by the running and distortion at the rotating connection.

[0045] Optionally, see Figure 4The limiting part 22 extends from the fixing part 21 and extends above the fixing part 21, the bearing part 23 extends from the fixing part 21 and extends below the fixing part 21, the fixing part 21 is provided with an avoiding opening 24 for installing the head tube 31, two connecting tubes 25 are arranged between the bearing part 23 and the fixing part 21, the two connecting tubes 25 are located on the two sides of the avoiding opening 24, and the two connecting tubes 25 are used for limiting the rotation angle of the frame body 3.

[0046] The connecting tube 25 improves the structural strength of the bearing part 23 and limits the steering angle, and ensures the connection reliability and accuracy of the head tube 31.

[0047] Optionally, the frame body 3 is provided with a welding piece 32 extending out of the two sides of the frame body 3, the two connecting tubes 25 are respectively provided with mounting brackets 27, and the welding piece 32 on each side is provided with a damping rod 5 connected with the mounting bracket 27 on the corresponding side. The existence of the damping rod 5 makes the steering more gentle and less likely to occur.

[0048] Further, the fixing part 21 and the bearing part 23 are provided with a reinforcing tube 26, which further strengthens the structural strength of the connecting seat 2.

[0049] Optionally, the mounting plate 11 is provided with a notch avoiding the limiting part 22, the front support 1 is a hollow welding frame, and the mounting plate 11 is welded to the bottom surface of the front support 1. Since the limiting part 22 is higher than the fixing part 21, the notch on the mounting plate 11 can make the limiting part 22 enter the hollow gap of the front support 1, fully utilize the space, and make the structure more compact.

[0050] Optionally, the outer edge shape of the fixing part 21 is the same as that of the mounting plate 11, the fixing part 21 is attached to the mounting plate 11 and clamped and fixed by the clamping piece 6, and the connecting seat 2 and the front support 1 are reliably fixed.

[0051] Further, the clamping piece 6, the mounting plate 11 and the fixing part 21 are respectively provided with fixing holes 28, and the clamping piece 6, the mounting plate 11 and the fixing part 21 are further fixed as a whole by the bolts penetrating through the fixing holes 28.

[0052] Optionally, as shown in Figure 5 The frame body 3 comprises an inner tube 33 and an outer tube 34, the inner tube 33 is arranged in the outer tube 34, triangular ribs 35 are arranged between the inner tube 33 and the outer tube 34, and the outer surface of the outer tube 34 is provided with reinforcing ribs 36, so as to ensure the structural stability and strength of the frame body 3.

[0053] As shown in Figure 6 The embodiment also provides a tricycle with a box body, which adopts the connecting structure of the box body and the frame.

[0054] The tricycle with the box body formed by the connecting structure of the box body and the frame ensures flexible steering and improves the stability of the overall structure.

[0055] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present application. Here, it is unnecessary and impossible to enumerate all the implementation modes. Any modification, equivalent substitution and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application claim.

Claims

1. The connection structure between the box and the frame is characterized by: It comprises a front support (1), a connecting seat (2) and a frame body (3), wherein: The front support (1) is fixed to the bottom of the box body, and a mounting plate (11) is provided on the lower surface of the front support (1); The connecting seat (2) comprises a fixing portion (21), a limiting portion (22) and a bearing portion (23); the fixing portion (21) is fixedly connected to the mounting plate (11); the limiting portion (22) and the bearing portion (23) are arranged opposite to each other with a spacing; and a rotating shaft (4) is provided between the limiting portion (22) and the bearing portion (23); A head tube (31) is provided at the front end of the frame body (3), the head tube (31) extends between the limiting portion (22) and the bearing portion (23), and the head tube (31) is sleeved on the rotating shaft (4), so that the frame body (3) can rotate around the rotating shaft (4).

2. The connection structure between the box and the frame according to claim 1, characterized in that: The limiting portion (22) extends from the fixing portion (21) and extends to the upper side of the fixing portion (21); the bearing portion (23) extends from the fixing portion (21) and extends to the lower side of the fixing portion (21); and a relief opening (24) for mounting the head pipe (31) is provided on the fixing portion (21); Two connecting pipes (25) are provided between the bearing portion (23) and the fixing portion (21), the two connecting pipes (25) being located on both sides of the avoidance opening (24), and the two connecting pipes (25) are used to limit the rotation angle of the vehicle frame body (3).

3. The connection structure between the box and the frame according to claim 2, characterized in that: The frame body (3) is provided with a welding piece (32), and the welding piece (32) extends out of both sides of the frame body (3). The two connecting pipes (25) are respectively provided with mounting brackets (27), and the welding piece (32) on each side is provided with a damping rod (5) connected to the mounting bracket (27) on the corresponding side.

4. The connection structure between the box and the frame according to claim 2, characterized in that: A reinforcement tube (26) is provided between the fixing portion (21) and the bearing portion (23).

5. The connection structure between the box and the frame according to claim 2, characterized in that: The mounting plate (11) is provided with a notch for avoiding the limiting portion (22).

6. The connection structure between the box and the frame according to claim 1, characterized in that: The outer edge shape of the fixing portion (21) is the same as the outer edge shape of the mounting plate (11), and the fixing portion (21) and the mounting plate (11) are attached and fixed by clamping pieces (6).

7. The connection structure between the box and the frame according to claim 6, characterized in that: Fixing holes (28) are respectively provided on the clip (6), the mounting plate (11) and the fixing portion (21).

8. The connection structure between the box and the frame according to claim 1, characterized in that: The frame body (3) comprises an inner tube (33) and an outer tube (34); the inner tube (33) is inserted into the outer tube (34); a triangular rib (35) is provided between the inner tube (33) and the outer tube (34); and a reinforcing rib (36) is provided on the outer surface of the outer tube (34).

9. A tricycle with a box body, characterized in that: The connection structure between the box body and the frame is adopted as described in any one of claims 1 to 8.

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