Rear carrier structure for a motorcycle

Abstract

The utility model relates to motorcycle goods shelf technical field, concretely is a motorcycle rear goods shelf structure, including main frame, the inside fixed connection of main frame has first connecting frame, the inside swing joint of first connecting frame has first type frame, the inside swing joint of first connecting frame has second type frame, the side of first type frame and second type frame opposite all is established tooth groove, the side of tooth groove has transmission gear. Advantages lie in: in the cooperation of tooth groove, transmission gear, pivot, first bevel gear, second bevel gear and connecting rod, when moving two type frames, only need to pull one type frame, simultaneously when placing articles on two type frames, do not need to pull type frame, make when placing articles on goods shelf, it is convenient, under the cooperation of fixed tooth block, fixed tooth block and connecting rod, can fix two type frames, make the stability of goods shelf when transporting articles improve.

Description

Technical Field

[0001] This utility model relates to the field of motorcycle rack technology, and in particular to a motorcycle rear rack structure. Background Technology

[0002] Small motorcycles generally do not have a rack at the rear, but relatively large motorcycles usually have a rack at the rear for transporting items that are not very heavy.

[0003] A motorcycle rear rack structure disclosed in Chinese patent CN213109596U allows for the deployment of a subframe when transporting larger items. This subframe is initially secured by clamps and claws, enabling it to support heavier loads. When folded, it prevents the transport of smaller items. A nut seat is also included for mounting a motorcycle trunk. This design offers wide applicability. However, while addressing the problem, this motorcycle rear rack structure has the following drawbacks:

[0004] When transporting large items, both clamps need to be pulled simultaneously. Since the springs pull the clamps, the clamps need to be pulled continuously when placing the items on the crossbar. This setup makes it inconvenient to place large items on the crossbar.

[0005] The clamping frame uses springs to hold items on the crossbar. When a motorcycle travels on a bumpy road, the items can cause the clamping frame to shake, making it difficult to guarantee the overall stability of the rack structure during transport. Utility Model Content

[0006] The purpose of this utility model is to at least solve one of the technical defects described in the background art.

[0007] Therefore, one objective of this utility model is to propose a motorcycle rear rack structure, which aims to solve the problems of inconvenience when placing large items on the crossbar due to the spring and clamping frame settings in the existing motorcycle rear rack structure, and the inability to guarantee the overall stability of the rack structure when supporting items.

[0008] To achieve the above objectives, one embodiment of the present invention provides a motorcycle rear rack structure, including a main frame. A first connecting frame is fixedly connected to the inner side of the main frame. A first U-shaped frame is movably connected inside the first connecting frame. A second U-shaped frame is movably connected inside the first connecting frame. Gear grooves are provided on opposite sides of the first and second U-shaped frames. A transmission gear meshes on one side of the gear groove. A first bevel gear is provided at the bottom of the transmission gear. A second bevel gear meshes on the outer side of the first bevel gear. A connecting rod is fixedly connected to one side of the second bevel gear.

[0009] Preferably, in any of the above embodiments, a rotating shaft is fixedly connected to the top of the transmission gear, the rotating shaft is rotatably connected to the first connecting frame, the bottom end of the rotating shaft passes through the first connecting frame, the first bevel gear is fixedly connected to the rotating shaft, and the transmission gear can drive the first bevel gear to rotate through the rotating shaft, so that the first bevel gear drives the transmission gear on the other side to rotate synchronously through the second bevel gear, the connecting rod, the second bevel gear on the other side, and the second bevel gear on the other side. This arrangement allows the first C-shaped frame and the second C-shaped frame to move synchronously.

[0010] Preferably, in any of the above solutions, a support block is fixedly connected to the bottom of the first connecting frame, the support block is rotatably connected to the connecting rod, and the support block supports the connecting rod so that the stability of the connecting rod can be guaranteed when it rotates.

[0011] Preferably, in any of the above solutions, a shielding box is fixedly installed at the bottom of the first connecting frame, a screw is threadedly connected to the bottom of the shielding box, a fixed tooth block is rotatably connected to the bottom end of the screw, and a fixed gear is fixedly connected to the outside of the rotating shaft. When the screw rotates, it can drive the fixed tooth block to mesh with the fixed gear, so that the control rod will not rotate arbitrarily, and at the same time, the first C-shaped frame and the second C-shaped frame will not move inside the first connecting frame.

[0012] Preferably, in any of the above solutions, the inner wall of the shielding box is provided with a guide groove, and a guide block is movably connected inside the guide groove. The guide block is fixedly connected to the fixed tooth block, and the fixed tooth block can drive the guide block to move inside the guide groove. This arrangement ensures that the screw can only push the fixed tooth block and cannot drive the fixed tooth block to rotate together, so that the fixed tooth block can better mesh with the fixed gear.

[0013] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0014] 1. By setting up tooth grooves, transmission gears, rotating shafts, first bevel gears, second bevel gears, and connecting rods, it is possible to move only one of the two C-shaped shelves by pulling it. At the same time, it is not necessary to pull the C-shaped shelves when placing items on the main frame and the two C-shaped shelves. The above settings make it more convenient to place larger items on the shelves.

[0015] 2. The screw pushes the fixed tooth block, which meshes with the fixed gear and fixes the connecting rod. At the same time, the connecting rod fixes the rotating shaft and the transmission gear through two bevel gears. This setting prevents the two C-shaped frames from moving inside the first connecting frame, thus improving the stability of the shelf when transporting goods.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a structural schematic diagram according to the present invention;

[0019] Figure 2 According to this utility model Figure 1 A cross-sectional structural diagram;

[0020] Figure 3 This is a structural schematic diagram of the fixing component according to the present invention;

[0021] Figure 4 According to this utility model Figure 3 Enlarged structural diagram at point A;

[0022] Figure 5 This is a schematic diagram of the transmission assembly according to the present invention.

[0023] The components are: 1. Main frame, 2. First connecting frame, 3. First C-shaped frame, 4. Second C-shaped frame, 5. Gear groove, 6. Transmission gear, 7. First bevel gear, 8. Second bevel gear, 9. Connecting rod, 10. Rotating shaft, 11. Support block, 12. Second connecting frame, 13. Cover box, 14. Screw, 15. Fixed gear block, 16. Fixed gear, 17. Guide groove, 18. Guide block, 19. Backrest, 20. Fixed ear plate. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] like Figure 1-5 As shown, this embodiment of a motorcycle rear rack structure includes a main frame 1. A first connecting frame 2 is fixedly connected to the inner side of the main frame 1. A first U-shaped frame 3 is movably connected inside the first connecting frame 2. A second U-shaped frame 4 is movably connected inside the first connecting frame 2. The second U-shaped frame 4 is located outside the first U-shaped frame 3, and the two U-shaped frames are of the same length. A toothed groove 5 is provided on one side of each of the first U-shaped frame 3 and the second U-shaped frame 4. A transmission gear 6 meshes with one side of the toothed groove 5. Two transmission gears 6 are provided inside the first connecting frame 2, and the two transmission gears 6 respectively mesh with the toothed groove 5 on one side of the first U-shaped frame 3 and the second U-shaped frame 4, so that the rotation of the transmission gear 6 can drive the corresponding U-shaped frame to move inside the first connecting frame 2. The two C-shaped frames are each equipped with a protrusion at one end. Under the limitation of the protrusion, the two C-shaped frames will not move out of the inside of the first connecting frame 2. The bottom of the transmission gear 6 is equipped with a first bevel gear 7, and the outer side of the first bevel gear 7 is meshed with a second bevel gear 8. A connecting rod 9 is fixedly connected to one side of the second bevel gear 8. Both ends of the connecting rod 9 are equipped with the first bevel gear 7 and the second bevel gear 8. When the first C-shaped frame 3 is pulled, the first C-shaped frame 3 drives the corresponding transmission gear 6 to rotate through the tooth groove 5. At this time, with the assistance of the first bevel gear 7, the second bevel gear 8 and the connecting rod 9, the transmission gear 6 drives the transmission gear 6 on the other side to rotate synchronously, so that the first C-shaped frame 3 and the second C-shaped frame 4 move out of the inside of the first connecting frame 2 synchronously.

[0027] Example 1: A rotating shaft 10 is fixedly connected to the top of the transmission gear 6. The rotating shaft 10 is rotatably connected to the first connecting frame 2. The bottom end of the rotating shaft 10 passes through the first connecting frame 2. The first bevel gear 7 is fixedly connected to the rotating shaft 10. When the transmission gear 6 rotates, it can drive the rotating shaft 10 to rotate, and the rotating shaft 10 drives the connecting rod 9 to rotate through the first bevel gear 7 and the second bevel gear 8.

[0028] Example 2: A support block 11 is fixedly connected to the bottom of the first connecting frame 2. The support block 11 is rotatably connected to the connecting rod 9. The connecting rod 9 is connected to the support block 11 through a bearing, so that the support block 11 can support the connecting rod 9, and the connecting rod 9 can rotate on the support block 11.

[0029] Example 3: A second connecting frame 12 is fixedly connected to the inner side of the main frame 1. The other side of the first C-shaped frame 3 and the second C-shaped frame 4 are movably connected to the second connecting frame 12. When one side of the first C-shaped frame 3 and the second C-shaped frame 4 moves inside the first connecting frame 2, the other side of the two C-shaped frames moves inside the second connecting frame 12. This arrangement allows the first connecting frame 2 and the second connecting frame 12 to jointly support the two C-shaped frames.

[0030] Example 4: A shielding box 13 is fixedly installed at the bottom of the first connecting frame 2. The shielding box 13 shields the two bevel gears and the connecting rod 9. A screw 14 is threadedly connected to the bottom of the shielding box 13. A fixed tooth block 15 is rotatably connected to the bottom end of the screw 14. The bottom end of the screw 14 is connected to the fixed tooth block 15 through a bearing. A fixed gear 16 is fixedly connected to the outer side of the bottom end shaft 10 of the screw 14. When the two C-shaped frames are moved to the appropriate position, the screw 14 is rotated, causing the screw 14 to push the fixed tooth block 15 upward and make the fixed tooth block 15 mesh with the fixed gear 16, thereby completing the fixation of the connecting rod 9.

[0031] Example 5: A guide groove 17 is provided on the inner wall of the shielding box 13. A guide block 18 is movably connected inside the guide groove 17. The guide block 18 is fixedly connected to the fixed tooth block 15. When the fixed tooth block 15 moves, it drives the guide block 18 to move inside the guide groove 17.

[0032] Example 6: A backrest 19 is fixedly connected to the inner side of the main frame 1, and a fixing ear plate 20 is fixedly connected to the inner side of the main frame 1. The rack can be installed at the rear of the motorcycle through the fixing ear plate 20.

[0033] The working principle of this utility model is as follows: During use, when transporting larger items, the first U-shaped frame 3 is directly pulled, causing it to rotate via the toothed groove 5 and the corresponding transmission gear 6. The transmission gear 6, through the rotating shaft 10, the first bevel gear 7, and the second bevel gear 8, drives the connecting rod 9 to rotate. The connecting rod 9, through the second bevel gear 8 and the first bevel gear 7 at the other end, drives the rotating shaft 10 and the transmission gear 6 on the other side to rotate, causing the two transmission gears 6 to rotate synchronously. Simultaneously, the first U-shaped frame... 3 and the second cubit frame 4 move out of the inside of the first connecting frame 2 simultaneously. When the two cubit frames move to the appropriate position, the screw 14 is rotated directly, so that the screw 14 pushes the fixed tooth block 15 and meshes with the fixed gear 16. Under the fixation of the fixed tooth block 15 and the fixed gear 16, the connecting rod 9 will not rotate, and the two cubit frames are directly fixed in their positions. Then, the items are placed on the main frame 1, the first cubit frame 3 and the second cubit frame 4, and finally the items are fixed by the elastic rope.

[0034] Compared with the prior art, the present invention has the following advantages:

[0035] 1. When placing larger items on the main shelf 1, the first U-shaped shelf 3 is pulled directly, causing it to rotate the corresponding transmission gear 6. The transmission gear 6 then drives the connecting rod 9 to rotate via the rotating shaft 10, the first bevel gear 7, and the second bevel gear 8. This causes the connecting rod 9 to rotate via the second bevel gear 8 and the first bevel gear 7 at the other end, which in turn drives the corresponding rotating shaft 10 and the transmission gear 6. This causes the transmission gear 6 to move the second U-shaped shelf 3, allowing the first U-shaped shelf 3 and the second U-shaped shelf 4 to move synchronously to the appropriate position. Items are then placed on the main shelf 1, the first U-shaped shelf 3, and the second U-shaped shelf 4. In summary, moving two U-shaped shelves only requires pulling one of them, and no pulling is necessary when placing larger items, making it convenient to place items on the shelf.

[0036] 2. After the first U-shaped frame 3 and the second U-shaped frame 4 are moved to the appropriate position, the screw 14 is rotated directly, so that the screw 14 pushes the fixed tooth block 15 upward and makes the fixed tooth block 15 mesh with the fixed gear 16. At this time, the connecting rod 9 cannot rotate under the restriction of the fixed tooth block 15 and the fixed gear 16. At the same time, the connecting rod 9 can limit the two transmission gears 6 through the second bevel gear 8, the first bevel gear 7 and the rotating shaft 10, so that the first U-shaped frame 3 and the second U-shaped frame 4 can be fixed after moving to the appropriate position. The above settings ensure that the two U-shaped frames will not shake arbitrarily when the shelf supports and transports goods, thus ensuring the overall stability of the shelf.

Claims

1. A motorcycle rear rack structure, characterized in that, Includes a main frame (1), with a first connecting frame (2) fixedly connected to the inner side of the main frame (1), a first mortise frame (3) movably connected inside the first connecting frame (2), a second mortise frame (4) movably connected inside the first connecting frame (2), tooth grooves (5) are provided on opposite sides of the first mortise frame (3) and the second mortise frame (4), a transmission gear (6) meshes on one side of the tooth groove (5), a first bevel gear (7) is provided at the bottom of the transmission gear (6), a second bevel gear (8) meshes on the outer side of the first bevel gear (7), and a connecting rod (9) is fixedly connected to one side of the second bevel gear (8).

2. The motorcycle rear rack structure as described in claim 1, characterized in that, The top of the transmission gear (6) is fixedly connected to a rotating shaft (10), the rotating shaft (10) is rotatably connected to the first connecting frame (2), the bottom end of the rotating shaft (10) passes through the first connecting frame (2), and the first bevel gear (7) is fixedly connected to the rotating shaft (10).

3. The motorcycle rear rack structure as described in claim 2, characterized in that, The bottom of the first connecting frame (2) is fixedly connected to a support block (11), and the support block (11) is rotatably connected to the connecting rod (9).

4. The motorcycle rear rack structure as described in claim 1, characterized in that, The inner side of the main frame (1) is fixedly connected to a second connecting frame (12), and the other side of the first C-shaped frame (3) and the second C-shaped frame (4) are movably connected to the second connecting frame (12).

5. The motorcycle rear rack structure as described in claim 2, characterized in that, A shielding box (13) is fixedly installed at the bottom of the first connecting frame (2). A screw (14) is threadedly connected to the bottom of the shielding box (13). A fixed tooth block (15) is rotatably connected to the bottom end of the screw (14). A fixed gear (16) is fixedly connected to the outside of the rotating shaft (10).

6. The motorcycle rear rack structure as described in claim 5, characterized in that, The inner wall of the shielding box (13) is provided with a guide groove (17), and a guide block (18) is movably connected inside the guide groove (17). The guide block (18) is fixedly connected to the fixed tooth block (15).

7. The motorcycle rear rack structure as described in claim 1, characterized in that, The inner side of the main frame (1) is fixedly connected to a backrest (19), and the inner side of the main frame (1) is fixedly connected to a fixed ear plate (20).

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