A bicycle rear carrier fixing mechanism

Abstract

The utility model discloses a bicycle rear goods shelf fixing mechanism, including frame rear fork, connecting piece, and install the goods shelf body of frame rear fork, the goods shelf body is connected with frame rear fork through connecting piece, the goods shelf body has two states in the process of turning over, is the assembly state and transportation state respectively, when the goods shelf body is in the assembly state, the goods shelf body is fixedly connected with frame rear fork, when the goods shelf body is in the transportation state, the goods shelf body can turn over around connecting piece. The utility model discloses set up the connecting piece with two states, make the goods shelf body can switch before storage transportation state and use state according to the use demand. Through turning over to the goods shelf body of storage transportation state, make the top of goods shelf body gradually from the inclination state switches to the horizontal state, and then realize the sinking of goods shelf body tail end, realized under the premise of not disassembling goods shelf body, the storage space of goods shelf body is saved.

Description

Technical Field

[0001] This utility model belongs to the field of bicycle technology, specifically relating to a bicycle rear rack fixing mechanism. Background Technology

[0002] In the existing technology, bicycles need to minimize transportation space during transportation. Due to the structure of the bicycle frame, a fully assembled bicycle will occupy some extra space. Therefore, some parts are usually disassembled to facilitate packaging and save packaging space. However, not all parts can be disassembled, otherwise it will cause great inconvenience to the end user's assembly. Therefore, some bicycles will have the front wheel, seat post and handlebars, which are easy to install, removed during transportation, while the rear wheel and other mechanisms that are more difficult to assemble are retained.

[0003] In existing technology, the rack, as an important component of a bicycle, is generally mounted on the rear axle. A potential drawback of this structure is that when the front wheel and other parts are removed and the bicycle is packed, the rear end of the rack may tilt due to the bicycle frame's tilt, increasing the height of the packaging box. To save packaging and transportation space and thus reduce costs, the rear rack is usually disassembled and packaged separately. However, because the rack is connected to the rear axle, disassembling and assembling it is cumbersome. Furthermore, it requires separate packaging and storage space for the independent rack, adding further challenges. Utility Model Content

[0004] To overcome the shortcomings of existing technology, this utility model provides a bicycle rear rack fixing mechanism to solve the technical problem of inconvenient disassembly and assembly of bicycle racks during packaging, transportation, and subsequent assembly.

[0005] To achieve the above objectives, the specific technical solution of this utility model is as follows: A bicycle rear rack fixing mechanism includes a bicycle frame rear fork, a connector; and a rack body installed on the bicycle frame rear fork, the rack body being connected to the bicycle frame rear fork via the connector; The rack body includes an assembled state and a transport state; when the rack body is in the assembled state, the rack body is fixedly connected to the rear fork of the frame; When the main body of the shelf is in transport, the main body of the shelf can be flipped around the connecting parts.

[0006] Furthermore, the connecting component is a rotating bolt; the main body of the rack is provided with a nut that mates with the rotating bolt; the rotating bolt passes through the rear fork of the frame and the main body of the rack in sequence, and is connected to the nut.

[0007] Furthermore, the rotating bolt enables the bottom of the rack body to be locked and moved with the rear fork of the frame. When the rotating bolt is in the movable state, the rack body can rotate with the rotating bolt as the fulcrum. Alternatively, the rotating bolt can be screwed into a set position and fixed. At this time, the rack body and the rear fork of the frame remain unlocked. In addition to the bottom connection to the rear fork of the frame, the rack body also has another connection point to the rear fork of the frame, so as to fix the rack body relative to the rear fork of the frame.

[0008] Furthermore, the rear fork of the frame has mounting holes that mate with the rotating bolt; the lower end of the rack body has a hexagonal hole; a hexagonal nut that mates with the rotating bolt is placed in the hexagonal hole; the rotating bolt passes through the mounting hole and the hexagonal hole in sequence and is connected to the hexagonal nut, allowing the rack body to rotate around the rotating bolt. Furthermore, the screw portion of the rotating bolt adopts a fully threaded structure, or the outer end of the screw portion is threaded and the inner end is a smooth rod structure.

[0009] Furthermore, the fixing mechanism also includes a mudguard; the mudguard is fixed to the rear fork of the frame; the mudguard is provided with an adapter mounting block, and the adapter mounting block is provided with a locking screw that cooperates with the rack body; the locking screw can realize the connection and fixation between the adapter mounting block and the rack body when the rack body and the adapter mounting block abut against each other.

[0010] Furthermore, the adapter mounting block is divided into a lower mounting part and an upper locking part; the mudguard is provided with connecting bolts that cooperate with the adapter mounting block; the adapter mounting block is fixed to the mudguard by the connecting bolts.

[0011] Furthermore, the mudguard has a reinforcing rib on its inner side; the connecting bolt passes through the reinforcing rib and the mudguard in sequence and is connected to the adapter mounting block.

[0012] Furthermore, the mounting portion of the adapter block is fitted to the mudguard; the mounting portion of the adapter block has an arc-shaped or straight-line structure.

[0013] Furthermore, a baffle is provided in the middle of the main body of the shelf, and the baffle is positioned so that it can abut against the mudguard after the main body of the shelf rotates.

[0014] Furthermore, the rear fork of the frame is provided with a locking bracket; the locking bracket is provided with a connecting rod fixing hole; the reinforcing rib is provided with a fixing bolt that mates with the connecting rod fixing hole; the fixing bolt passes through the reinforcing rib and is connected to the connecting rod fixing hole.

[0015] Compared with the prior art, the present invention has the following advantages: This invention utilizes a connector with two states, allowing the shelving unit to switch between storage / transportation and usage states according to needs. By flipping the shelving unit in storage / transportation mode, the top of the unit gradually changes from an inclined state to a horizontal state, thereby lowering the rear end of the unit. This saves storage space without disassembling the shelving unit. It improves the efficiency of packaging and subsequent assembly while reducing transportation costs for the manufacturer. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the main body of the shelf in use according to this utility model; Figure 3 This is a schematic diagram showing the relative positions of the transfer mounting block and the main body of the shelf in this utility model. Figure 2 (Enlarged view of part A in the middle) Figure 4 This is a schematic diagram of the structure of the adapter mounting block in this utility model; Figure 5 This is a schematic diagram of the reinforcing rib plate in this utility model; Figure 6 This is a structural schematic diagram of the load-bearing part of the main body of the shelf in this utility model; Figure 7 This is a schematic diagram of the locking bracket in this utility model; Figure 8 This is a schematic diagram of the structure between the bottom of the rack body and the rear fork of the frame in this utility model; Figure 9 This is a comparative schematic diagram of the shelf body in its usage state and its storage and transportation state in this utility model.

[0017] Reference numerals: 1. Rear fork of the frame; 2. Main body of the rack; 2-1. Support part; 2-2. Load-bearing part; 3. Mudguard; 4. Adapter mounting block; 4-1. Mounting part; 4-2. Locking part; 4-3. Rack fixing hole; 5. Connector; 6. Stop bar; 7. Reinforcing rib plate; 8. Locking screw; 9. Mounting groove; 10. Locking bracket; 11. Linkage fixing hole; 12. Hexagonal nut. Detailed Implementation

[0018] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper side", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] like Figure 1 and 2 As shown, a bicycle rear rack fixing mechanism includes a frame body, a rear fork 1 mounted on the frame body, a rack body 2, a mudguard 3, and an adapter mounting block 4. The bottom of the rack body 2 is connected to the rear fork 1 via a connector 5.

[0021] Normally, when the bicycle is in use, the rack body 2 is mounted on the rear fork 1 of the frame via connector 5, and the top of the rack body 2 is fixedly connected to the rear fork 1. When the bicycle needs to be stored and transported, the rack body 2 is disconnected from the rear fork 1, and the rack body 2 can rotate around connector 5. The top of the rack body 2 gradually switches from an inclined state to a horizontal state, thereby allowing the rear end of the rack body 2 to sink, as... Figure 9 As shown.

[0022] The adapter mounting block 4 is fixed on the mudguard 3 and can be used with screws to lock the flip position of the main body 2 of the shelf when needed, and form a support.

[0023] In some embodiments, the rear fork 1 of the frame is provided with an upwardly extending support bracket. When the rack body 2 is flipped to a designated position, it is directly fixed to the support bracket by screws. At this time, the rack body and the rear fork of the frame remain in an unlocked state. In addition to the bottom connection to the rear fork of the frame, the rack body is also provided with another connection point to the rear fork of the frame, so as to fix the rack body relative to the rear fork of the frame.

[0024] Furthermore, in some embodiments, the connector 5 has a locked state and an open state. The locked state means that the connector 5 presses the rack body and the rear fork 1 of the frame together, preventing them from rotating freely. The open state means that the connector 5 is unlocked, allowing the rack body to rotate freely relative to the rear fork 1 around the connector 5. When the bicycle needs the rack for normal use, the connector 5 switches to the locked state, further pressing and securing the bottom of the rack body 2. When the bicycle needs to be stored and transported, the connector 5 switches to the open state, allowing the rack body 2 to rotate around the connector 5, achieving a tilting and lowering of the rear end of the rack body 2.

[0025] Furthermore, such as Figure 8 As shown, connector 5 uses a rotating bolt. The bolt's threaded portion has a fully threaded structure. The bolt's threaded portion passes sequentially through the rear fork 1 of the frame and the rack body 2, and engages with the hexagonal nut 12 on the rack body 2 to connect and fix the rack body 2. In another embodiment, the outer end of the bolt's threaded portion is threaded, while the inner end is a smooth rod. The rear fork 1 of the frame has mounting holes that mate with the rotating bolt. The hexagonal hole at the lower end of the rack body 2 contains a hexagonal nut 12 that mates with the rotating bolt. During installation, the rotating bolt passes sequentially through the mounting holes on the rear fork 1 of the frame and the rack body 2, and engages with the hexagonal nut on the rack body 2 to connect and fix the rack body 2.

[0026] In this embodiment, the lower end of the shelf body 2 is slightly clearance-fitted with the outer diameter of the rotating bolt of the bare rod structure, so that when the rotating bolt is in the movable state, the shelf body can rotate around the rotating bolt.

[0027] In some embodiments, the screw portion of the rotating bolt has a fully threaded structure. The screw portion of the rotating bolt passes sequentially through the rear fork 1 of the frame and the rack body 2, and is connected to the rack body 2 by cooperating with the hexagonal nut on the rack body 2. The outer diameter of the thread on the rotating bolt has a slight clearance fit, allowing the rack body to rotate around the rotating bolt when the rotating bolt is in the movable state.

[0028] In practical use, when the bicycle is in the storage and transportation state, the packaging personnel loosen the rotating bolt, allowing the main body 2 of the shelf to rotate freely around the rotating bolt until the main body 2 flips outward. During the rotation, the tail end of the main body 2 gradually switches from an inclined state to a horizontal state, thereby achieving the sinking of the tail end of the main body 2.

[0029] After the bicycle is unpacked, the installer flips the rack body 2 forward until it contacts the adapter mounting block 4. The locking screws 8 on the adapter mounting block 4 lock the rack body 2 in its flipped position, providing support. The user can then tighten the rotating bolts to lock the bottom of the rack body 2, further securing it in place.

[0030] like Figure 2 and 3 As shown, the main body 2 of the shelving unit is divided into a lower support section 2-1 and an upper load-bearing section 2-2. The support section 2-1 adopts a triangular frame structure to provide effective support for the upper load-bearing section 2-2. The load-bearing section 2-2 has a mounting groove 9 that mates with the adapter mounting block 4. When the main body 2 of the shelving unit rotates to the working position, the mounting groove 9 on the main body 2 aligns with the adapter mounting block 4. The user initially locks the main body 2 to the working position by installing locking screws 8 in the mounting groove 9, which, in conjunction with the adapter mounting block 4. When the bicycle needs to be disassembled and transported, the user first removes the locking screws 8 on the main body 2. Next, the rotating bolt is loosened, allowing the main body 2 to rotate freely around the rotating bolt. The main body 2 flips outward, switching from the working state to the storage and transportation state. During this process, the load-bearing section 2-2 of the main body 2 gradually changes from an inclined state to a horizontal state.

[0031] In this embodiment, a stop bar 6 is provided on the middle of the bottom surface of the support portion 2-2 of the rack body 2. As the support portion 2-2 of the rack body 2 gradually flips over, the stop bar 6 on the rack body 2 gradually abuts against the mudguard 3, thereby limiting the outward flipping limit of the rack body 2 while simultaneously switching the support portion 2-2 of the rack body 2 from an inclined state to a horizontal state, reducing the storage space for bicycles. In addition, the front wheel is removed, placing the front fork and the support portion 2-2 of the rack body 2 at the same horizontal level.

[0032] like Figure 3 and 4 As shown, the adapter mounting block 4 is divided into a lower mounting part 4-1 and an upper locking part 4-2. The mounting part 4-1 of the adapter mounting block 4 is fitted into the mudguard 3. The mudguard 3 is provided with connecting bolts that mate with the adapter mounting block 4. The adapter mounting block 4 is fixed to the mudguard 3 by the connecting bolts.

[0033] Furthermore, the locking part 4-2 of the adapter mounting block 4 has two shelf fixing holes 4-3. Locking screws 8 are installed in the shelf fixing holes 4-3. When the shelf body 2 switches from the storage / transportation state to the use state, the user first removes the adapter mounting block 4. Next, the shelf body 2 flips inward until the mounting groove 9 aligns with the shelf fixing holes 4-3. The bottom of the removed locking screw 8 passes through the mounting groove 9 and connects to the adapter mounting block 4 through the shelf fixing holes 4-3, thereby locking the shelf body 2 in place.

[0034] Furthermore, the mounting portion 4-1 of the adapter mounting block 4 has an arc-shaped or straight-line structure. An arc-shaped structure is preferred, allowing the adapter mounting block 4 to fully fit against the mudguard 3 during installation.

[0035] like Figure 5 As shown, the mudguard 3 has a reinforcing rib 7 on its inner side. The reinforcing rib 7 has a connecting hole. The mudguard 3 has a clearance through hole corresponding to the connecting hole. During the installation of the adapter mounting block 4, the connecting bolts pass through the connecting hole and the clearance through hole in sequence, and are connected to the adapter mounting block 4.

[0036] Furthermore, the reinforcing rib 7 has a π-shaped structure with concave sides, which can protect the nuts of the connecting bolts installed on the reinforcing rib 7, preventing them from contacting the tire in extreme cases and causing danger.

[0037] like Figure 7 As shown, in this embodiment, the rear fork 1 of the frame is provided with a locking bracket 10; the locking bracket 10 has a connecting rod fixing hole 11; and the reinforcing rib 7 has multiple strip-shaped rib fixing holes. Fixing bolts that mate with the connecting rod fixing holes 11 are installed in the rib fixing holes. During installation, the fixing bolts pass through the mudguard 3 and connect with the connecting rod fixing holes 11 on the rear fork 1 of the frame, thereby fixing the reinforcing rib 7. At the same time, the use of strip-shaped rib fixing holes allows the reinforcing rib 7 to be adapted to different models of mudguards 3.

[0038] The working principle of this utility model is as follows: like Figure 6 As shown, when the bicycle is shipped using a packaging box, the rotating bolts at the bottom of the rack body 2 are in a movable state, and the rack body 2 flips outward until the retaining strip 6 abuts against the mudguard 3. The load-bearing part 2-2 in the rack body 2 is in a horizontal state. Compared to the inclined load-bearing part 2-2, the horizontal load-bearing part 2-2 achieves the effect of reducing the height by at least several centimeters. At the same time, the locking screws 8 used to fix the rack body 2 are temporarily fixed to the adapter mounting block 4. Of course, the locking screws 8 can also be stored separately in another location inside the packaging box. It should be noted that... Figure 9This is for illustrative purposes only. The actual packaging structure can be different, as long as the overall height is lower than that in the undisassembled state.

[0039] After the customer receives and unpacks the goods, they rotate the shelf body 2 until the mounting groove 9 on the shelf body 2 aligns with the shelf fixing hole 4-3 on the adapter mounting block 4. The bottom of the locking screw 8 is then passed through the mounting groove 9 and connected to the adapter mounting block 4 through the shelf fixing hole 4-3, thus locking the shelf body 2 in place. Next, the rotating bolts are tightened to further lock the shelf body 2 in place.

[0040] In addition, since the lower end of the rack body 2 is set on the rear fork of the frame rear fork 1, rather than on the wheel axle, customers can disassemble the entire rack body 2 without affecting the rear wheel, which facilitates the assembly and disassembly of the rack body 2.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A bicycle rear carrier fixing mechanism comprising a rear fork (1) of a bicycle frame and a carrier body (2) mounted on the rear fork (1), characterized in that: It also includes a connector (5); the rack body (2) is connected to the rear fork (1) of the frame via the connector (5); The rack body (2) includes an assembled state and a transport state; when the rack body (2) is in the assembled state, the rack body (2) is fixedly connected to the rear fork (1) of the frame; When the main body of the shelf (2) is in transport, the main body of the shelf (2) can be flipped around the connector (5).

2. The bicycle rear carrier fixation mechanism according to claim 1, characterized in that: The connector (5) is a rotating bolt; the rack body (2) is provided with a nut that cooperates with the rotating bolt; the rotating bolt passes through the rear fork (1) of the frame and the rack body (2) in sequence, and is connected to the nut.

3. The bicycle rear carrier fixation mechanism according to claim 2, characterized in that: The rotating bolt enables the bottom of the rack body (2) to be locked and moved with the rear fork (1) of the frame. When the rotating bolt is in the movable state, the rack body (2) can rotate with the rotating bolt as the fulcrum. Alternatively, the rotating bolt is screwed into the set position and fixed. At this time, the rack body and the frame rear fork (1) remain unlocked. In addition to the bottom connection of the frame rear fork (1), the rack body (2) is also provided with another connection point to the frame rear fork (1), so as to fix the rack body (2) relative to the frame rear fork (1).

4. The bicycle rear carrier fixation mechanism according to claim 2, characterized in that: The rear fork (1) of the frame is provided with a mounting hole that mates with the rotating bolt; the lower end of the rack body (2) is provided with a hexagonal hole; a hexagonal nut (12) that mates with the rotating bolt is provided in the hexagonal hole; the rotating bolt passes through the mounting hole and the hexagonal hole in sequence and is connected to the hexagonal nut (12), and the rack body (2) can rotate around the rotating bolt.

5. The bicycle rear carrier fixation mechanism according to claim 2, characterized in that: The screw portion of the rotating bolt has a fully threaded structure. Alternatively, the outer end of the screw section is threaded, while the inner end is a smooth rod structure.

6. The bicycle rear carrier fixation mechanism according to claim 1, characterized in that: It also includes a mudguard (3); the mudguard (3) is fixed on the rear fork (1) of the frame; the mudguard is provided with a transition mounting block (4), and the transition mounting block (4) is provided with a locking screw (8) that cooperates with the rack body (2); the locking screw (8) can realize the connection and fixation between the transition mounting block (4) and the rack body (2) when the rack body (2) and the transition mounting block (4) abut against each other.

7. A bicycle rear carrier securing mechanism according to claim 6, characterised in that: The adapter mounting block (4) is divided into a lower mounting part (4-1) and an upper locking part (4-2); the mudguard (3) is provided with connecting bolts that cooperate with the adapter mounting block (4); the adapter mounting block (4) is fixed to the mudguard (3) by the connecting bolts.

8. The bicycle rear carrier fixation mechanism according to claim 7, characterized in that: The mudguard (3) is provided with a reinforcing rib (7) on its inner side; the connecting bolt passes through the reinforcing rib (7) and the mudguard (3) in sequence, and is connected to the adapter block (4).

9. The bicycle rear carrier fixation mechanism according to claim 7, characterized in that: The mounting part (4-1) of the adapter mounting block (4) is in contact with the mudguard (3); the mounting part (4-1) of the adapter mounting block (4) is an arc-shaped or straight-shaped structure.

10. The bicycle rear carrier fixation mechanism according to claim 1, characterized in that: The shelf body (2) is provided with a baffle (6) in the middle. The baffle (6) is positioned so that it can abut against the mudguard (3) after the shelf body (2) rotates.

11. The bicycle rear carrier fixation mechanism according to claim 8, characterized in that: The rear fork (1) is provided with a locking support (10); the locking support (10) is provided with a connecting rod fixing hole (11); the reinforcing rib plate (7) is provided with a fixing bolt matched with the connecting rod fixing hole (11); the fixing bolt passes through the reinforcing rib plate (7) and is connected with the connecting rod fixing hole (11).

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