An angle-adjustable handle structure

Abstract

The utility model discloses an angle adjustable handle stand structure, including standpipe sleeve, handle stand pipe and angle adjusting mechanism, be equipped with the adapter part on standpipe sleeve, and the adapter part has the first through -hole, and be equipped with first ear and second ear on handle stand pipe, and first ear and second ear have second through -hole respectively, angle adjusting mechanism includes first lock block, second lock block, lock screw pin and lock screw female pin, and the inner periphery of first through -hole is set as polygon, and the outside of first ear and second ear is equipped with first lock toothing respectively, and the opposite inside of first lock block and second lock block is equipped with polygonal column section and second lock toothing respectively, and lock screw pin is worn in first lock block, and lock screw female pin is worn in second lock block and is connected with lock screw pin screw thread, this angle adjustable handle stand structure has simple structure, and the quantity of component is few, and the installation and disassembly are convenient and quick, and the adjustment operation is simple, and the good advantage of comfortable nature of use.

Description

Technical Field

[0001] This utility model relates to the field of bicycle parts technology, specifically to an adjustable handlebar stem structure. Background Technology

[0002] With the continuous improvement of people's living standards, cycling, as an aerobic fitness activity, has been widely used for exercise, leisure, entertainment, and social activities, and has been integrated into people's lives. The handlebars are fixed to the front fork stem through the stem structure to control the forward direction of the bicycle. Therefore, whether the handlebar height is appropriate will affect the comfort and safety of riding a bicycle. At present, there are various structures on the market that change the handlebar height by adjusting the angle of the stem structure. However, the existing angle adjustment mechanisms have a large number of components, complex structure, and are cumbersome to install and use, which has certain limitations. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide an adjustable angle stem structure that is simple in structure, has few components, is easy and quick to install and disassemble, is easy to adjust, and is comfortable to use.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: An adjustable handlebar stem structure includes a vertical tube sleeve, a handlebar stem tube, and an angle adjustment mechanism. The vertical tube sleeve has a connecting part with a first through hole. The handlebar stem tube has a first lug and a second lug, each with a second through hole. The connecting part is disposed between the first lug and the second lug. The angle adjustment mechanism passes through the first lug, the connecting part, and the second lug, so that the handlebar stem tube can be connected to the vertical tube sleeve at an adjustable angle. The angle adjustment mechanism includes a first locking block, a second locking block, a male locking screw, and a female locking screw. The inner circumference of the first through hole is polygonal. The outer sides of the first lug and the second lug are respectively provided with first locking tooth surfaces. The relative inner sides of the first locking block and the second locking block are respectively provided with polygonal column segments that fit into and connect with the first through hole and second locking tooth surfaces that mesh with the first locking tooth surfaces. The male locking screw passes through the first locking block, and the female locking screw passes through the second locking block and is threadedly connected to the male locking screw.

[0005] As a further improvement to the above technical solution: The inner periphery of the first through hole is set to an octagon, and the outer periphery of the polygonal column segment is set to an octagon.

[0006] The second locking block is provided with a keyway, and the locking screw is provided with a flat key. When the locking screw passes through the second locking block, the flat key and the keyway are engaged and connected, so that the locking screw and the second locking block are circumferentially fixedly connected.

[0007] The adapter is provided with a third through hole, and the locking screw is provided with a fourth through hole. A fork screw passes through the third through hole and the fourth through hole.

[0008] The adapter has a recessed cavity at the top corresponding to the third through hole, and a plunger is embedded in the recessed cavity.

[0009] The rear end of the vertical pipe sleeve has a through groove and forms a first pipe clamp and a second pipe clamp. Fasteners are inserted into the first pipe clamp and the second pipe clamp to adjust the clamping degree of the vertical pipe sleeve.

[0010] The stand tube has a first threading port, and the front end of the stand tube sleeve is fixedly provided with a wire cover. A second threading port is formed between the wire cover and the outer wall of the stand tube sleeve. The first threading port and the second threading port are connected.

[0011] A front stem fixing member is fixedly installed on the stem tube, and a handlebar locking hole is formed between the front stem fixing member and the stem tube.

[0012] Compared with the prior art, the advantages of this utility model are: The adjustable handlebar stem structure of this utility model includes a vertical tube sleeve, a handlebar stem, and an angle adjustment mechanism. The vertical tube sleeve has a connecting part, and the handlebar stem has a first lug and a second lug. The angle adjustment mechanism passes through the first lug, the connecting part, and the second lug. The angle adjustment mechanism includes a first locking block, a second locking block, a male locking screw, and a female locking screw. The inner circumference of the first through hole on the connecting part is polygonal. The first and second locking blocks each have polygonal column segments that fit into the first through hole, ensuring circumferential fixation between the first and second locking blocks and the vertical tube sleeve. The first lug... The first locking tooth surface is provided on the first locking block and the second locking block respectively. The second locking tooth surface is engaged with the first locking tooth surface, so that the first locking block and the second locking block are circumferentially fixed with the stem tube. By moving the first locking block and the second locking block axially, the second locking tooth surface can be disengaged from the first locking tooth surface, so that the stem tube can rotate relative to the stem tube sleeve, the first locking block and the second locking block, thereby adjusting the angle of the stem tube and realizing the adjustment of the handlebar height. It has the advantages of simple structure, few components, convenient and quick installation and disassembly, simple adjustment operation and good user comfort. Attached Figure Description

[0013] Figure 1This is a schematic diagram of an adjustable angle stand structure.

[0014] Figure 2 This is an exploded view of the adjustable-angle upright structure.

[0015] Figure 3 This is a structural diagram of the riser and angle adjustment mechanism.

[0016] Figure 4 This is an exploded view of the riser and angle adjustment mechanism.

[0017] Figure 5 This is a schematic diagram of the structure of the second locking block and the locking screw.

[0018] Figure 6 This is a structural diagram of the second locking block and the locking screw nut from another angle.

[0019] Figure 7 This is a schematic diagram of the vertical pipe sleeve.

[0020] Figure 8 This is a structural schematic diagram of the vertical pipe sleeve from another angle.

[0021] Figure 9 This is a front view of the vertical pipe sleeve.

[0022] Legend: 1. Stem sleeve; 101. Adapter; 2. Stem tube; 201. First lug; 202. Second lug; 3. Angle adjustment mechanism; 301. First locking block; 302. Second locking block; 303. Male locking screw; 304. Female locking screw; 4. First locking tooth surface; 5. Polygonal column segment; 6. Second locking tooth surface; 7. Keyway; 8. Flat key; 9. Fork screw; 10. Cavity; 11. Plunger; 12. Through groove; 1201. First tube clamp; 1202. Second tube clamp; 13. First cable pass-through port; 14. Cable cover; 15. Second cable pass-through port; 16. Stem front fixing part; 100. First through hole; 200. Second through hole; 300. Third through hole; 400. Fourth through hole; 500. Handlebar locking hole. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] like Figures 1 to 9As shown, the adjustable handlebar structure of this embodiment includes a vertical sleeve 1, a handlebar stem 2, and an angle adjustment mechanism 3. The vertical sleeve 1 has a connecting part 101 with a first through hole 100. The handlebar stem 2 has a first lug 201 and a second lug 202, each with a second through hole 200. The connecting part 101 is positioned between the first lug 201 and the second lug 202. The angle adjustment mechanism 3 passes through the first lug 201, the connecting part 101, and the second lug 202, allowing the handlebar stem 2 to be connected to the vertical sleeve 1 at an adjustable angle. The locking mechanism 3 includes a first locking block 301, a second locking block 302, a male locking screw 303, and a female locking screw 304. The inner circumference of the first through hole 100 is polygonal. The outer sides of the first lug 201 and the second lug 202 are respectively provided with a first locking tooth surface 4. The inner sides of the first locking block 301 and the second locking block 302 are respectively provided with a polygonal column segment 5 that is fitted and connected to the first through hole 100 and a second locking tooth surface 6 that is engaged and connected to the first locking tooth surface 4. The male locking screw 303 passes through the first locking block 301, and the female locking screw 304 passes through the second locking block 302 and is threadedly connected to the male locking screw 303. The adjustable handlebar stem structure includes a vertical tube sleeve 1, a handlebar stem 2, and an angle adjustment mechanism 3. The vertical tube sleeve 1 has a connecting part 101, and the handlebar stem 2 has a first lug 201 and a second lug 202. The angle adjustment mechanism 3 passes through the first lug 201, the connecting part 101, and the second lug 202. The angle adjustment mechanism 3 includes a first locking block 301, a second locking block 302, a male locking screw 303, and a female locking screw 304. The inner circumference of the first through hole 100 on the connecting part 101 is polygonal. The first locking block 301 and the second locking block 302 each have polygonal column segments 5, which are fitted into the first through hole 100, ensuring that the first locking block 301 and the second locking block 302 maintain a circumferential relationship with the vertical tube sleeve 1. The first and second lugs 201 and 202 are respectively provided with first locking tooth surfaces 4, and the first and second locking blocks 301 and 302 are respectively provided with second locking tooth surfaces 6. The second locking tooth surfaces 6 are engaged with the first locking tooth surfaces 4, so that the first and second locking blocks 301 and 302 are circumferentially fixed with the stem tube 2. By axially moving the first and second locking blocks 301 and 302, the second locking tooth surfaces 6 can be disengaged from the first locking tooth surfaces 4, so that the stem tube 2 can rotate relative to the stem sleeve 1, the first locking blocks 301 and 302, thereby adjusting the angle of the stem tube 2 and realizing the adjustment of the handlebar height. It has the advantages of simple structure, few components, convenient and quick installation and disassembly, simple adjustment operation, and good user comfort.

[0025] Preferably, the inner periphery of the first through hole 100 is octagonal, and the outer periphery of the polygonal column segment 5 is octagonal. In this embodiment, the first through hole 100 is an octagonal hole composed of eight planes, and the polygonal column segment 5 is an octagonal prism composed of eight planes. The polygonal column segments 5 on the first locking block 301 and the second locking block 302 are inserted into the first through hole 100, and the planes on the polygonal column segments 5 are tightly fitted with the planes inside the first through hole 100, so that the first locking block 301 and the second locking block 302 are circumferentially fixed to the vertical tube sleeve 1 respectively. When it is necessary to adjust the angle of the vertical tube 2, the first locking block 301 and the second locking block 302 can be moved axially first, so that the second locking tooth surface 6 on the first locking block 301 and the second locking block 302 disengages from the first locking tooth surface 4 on the outer side of the first lug 201 and the second lug 202. The polygonal column segments 5 on the first locking block 301 and the second locking block 302 remain within the first through hole 100. The first locking block 301 and the second locking block 302 are circumferentially fixed with the vertical tube sleeve 1. After rotating the vertical tube 2 by a certain angle, the second locking tooth surface 6 on the first locking block 301 and the second locking block 302 engages with the first locking tooth surface 4 on the outer side of the first lug 201 and the second lug 202 again, thereby achieving circumferential fixation between the first locking block 301 and the second locking block 302 and the vertical tube 2, thus locking the angle of the vertical tube 2. In other embodiments, the first through hole 100 can also be set as a pentagonal hole, a hexagonal hole, a heptagonal hole, etc., and the polygonal column segments 5 can be correspondingly set as pentagonal prisms, hexagonal prisms, heptagonal prisms, etc., not limited to this embodiment.

[0026] Preferably, the second locking block 302 is provided with a keyway 7, and the locking screw 304 is provided with a flat key 8. When the locking screw 304 passes through the second locking block 302, the flat key 8 and the keyway 7 are engaged and connected, so that the locking screw 304 and the second locking block 302 are circumferentially fixedly connected. In this embodiment, the second locking block 302 is provided with a keyway 7, and the locking screw 304 is provided with a flat key 8, so that the locking screw 304 and the second locking block 302 are circumferentially fixed through the key connection. When the locking screw 303 passes through the first locking block 301 and is threadedly connected to the locking screw 304, the locking screw 304 and the second locking block 302 are circumferentially fixed on the second lug 202, and the first locking block 301 is circumferentially fixed on the first lug 201. Rotating the locking screw 303 can lock the riser 2 on the riser sleeve 1.

[0027] Preferably, the adapter 101 has a third through hole 300, and the locking screw nut 304 has a fourth through hole 400. A fork screw 9 passes through the third through hole 300 and the fourth through hole 400. In this embodiment, the stem sleeve 1 is fitted onto the top end of the fork stem. The adapter 101 has a third through hole 300, and the central axis of the third through hole 300 is perpendicular to the central axis of the first through hole 100. The fork screw 9 passes through the third through hole 300 on the adapter 101 and the fourth through hole 400 on the locking screw nut 304, and is threadedly locked to the fork stem, effectively improving the connection stability of the adjustable stem structure of this utility model on the fork stem.

[0028] Preferably, the top of the adapter 101 corresponding to the third through hole 300 is provided with a cavity 10, and a plunger 11 is embedded in the cavity 10. In this embodiment, by providing a cavity 10 on the third through hole 300 and embedding the plunger 11 in the cavity 10, the fork screw 9 can be prevented from being exposed to the outside sun and rain, thus preventing the fork screw 9 from rusting and corroding, and helping to extend its service life.

[0029] Preferably, the rear end of the vertical pipe sleeve 1 has a through groove 12 and forms a first pipe clamp 1201 and a second pipe clamp 1202. Fasteners are inserted into the first pipe clamp 1201 and the second pipe clamp 1202 to adjust the clamping degree of the vertical pipe sleeve 1. In this embodiment, the first pipe clamp 1201 and the second pipe clamp 1202 are connected by screws. The clamping degree of the vertical pipe sleeve 1 can be adjusted by loosening or tightening the screws, which has the advantages of convenient and quick installation and disassembly, low cost, and high reliability.

[0030] Preferably, a first wire-passing opening 13 is provided inside the riser tube 2, and a wire cover 14 is fixedly provided at the front end of the riser tube sleeve 1. A second wire-passing opening 15 is formed between the wire cover 14 and the outer wall of the riser tube sleeve 1, and the first wire-passing opening 13 and the second wire-passing opening 15 are connected. In this embodiment, the first wire-passing opening 13 is provided inside the riser tube 2, and the second wire-passing opening 15 is formed between the wire cover 14 and the outer wall of the riser tube sleeve 1. The power wires of the vehicle lights, horns, and control wires on the handlebars can be routed internally by passing through the first wire-passing opening 13 and the second wire-passing opening 15, resulting in a simpler and more aesthetically pleasing appearance and effectively extending the service life of the handlebar wiring harness.

[0031] Preferably, a front stem fixing member 16 is fixedly provided on the stem tube 2, and a handlebar locking hole 500 is formed between the front stem fixing member 16 and the stem tube 2. In this embodiment, a first arc-shaped groove structure is provided at the end of the stem tube 2 away from the angle adjustment mechanism 3, and a second arc-shaped groove structure is provided on the front stem fixing member 16. A handlebar locking hole 500 is formed between the first arc-shaped groove structure and the second arc-shaped groove structure. The handlebar passes through the handlebar locking hole 500, thereby locking the handlebar to the front fork stem tube.

[0032] The above description is merely a preferred embodiment of this utility model, and the protection scope of this utility model is not limited to the above embodiments. For those skilled in the art, improvements and modifications obtained without departing from the technical concept of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An adjustable handlebar stem structure, characterized in that, The device includes a vertical tube sleeve (1), a handlebar tube (2), and an angle adjustment mechanism (3). The vertical tube sleeve (1) is provided with a connecting part (101) and the connecting part (101) has a first through hole (100). The handlebar tube (2) is provided with a first lug (201) and a second lug (202). The first lug (201) and the second lug (202) are respectively provided with a second through hole (200). The connecting part (101) is disposed between the first lug (201) and the second lug (202). The angle adjustment mechanism (3) passes through the first lug (201), the connecting part (101), and the second lug (202). The angle adjustment mechanism (3) includes a first locking block (301), a second locking block (302), a male locking screw (303), and a female locking screw (304). The inner circumference of the first through hole (100) is polygonal. The outer sides of the first lug (201) and the second lug (202) are respectively provided with a first locking tooth surface (4). The relative inner sides of the first locking block (301) and the second locking block (302) are respectively provided with a polygonal column segment (5) that is fitted and connected to the first through hole (100) and a second locking tooth surface (6) that is meshed and connected to the first locking tooth surface (4). The male locking screw (303) passes through the first locking block (301), and the female locking screw (304) passes through the second locking block (302) and is threadedly connected to the male locking screw (303).

2. The adjustable angle stem structure according to claim 1, characterized in that, The inner periphery of the first through hole (100) is set to an octagon, and the outer periphery of the polygonal column segment (5) is set to an octagon.

3. The adjustable angle stem structure according to claim 2, characterized in that, The second locking block (302) is provided with a keyway (7), and the locking screw nut (304) is provided with a flat key (8). When the locking screw nut (304) passes through the second locking block (302), the flat key (8) is engaged with the keyway (7) so that the locking screw nut (304) is circumferentially fixedly connected with the second locking block (302).

4. The adjustable angle stem structure according to claim 3, characterized in that, The adapter (101) is provided with a third through hole (300), and the locking screw nut (304) is provided with a fourth through hole (400). A fork screw (9) is provided through the third through hole (300) and the fourth through hole (400).

5. The adjustable angle stem structure according to claim 4, characterized in that, The adapter (101) has a cavity (10) at the top corresponding to the third through hole (300), and a plunger (11) is embedded in the cavity (10).

6. The adjustable angle stem structure according to claim 1, characterized in that, The rear end of the vertical pipe sleeve (1) is provided with a through groove (12) and forms a first pipe clamp (1201) and a second pipe clamp (1202). Fasteners are inserted into the first pipe clamp (1201) and the second pipe clamp (1202) to adjust the clamping degree of the vertical pipe sleeve (1).

7. The adjustable angle stem structure according to claim 1, characterized in that, The stand tube (2) has a first threading port (13) inside, and a wire cover (14) is fixedly installed at the front end of the stand tube sleeve (1). A second threading port (15) is formed between the wire cover (14) and the outer wall of the stand tube sleeve (1). The first threading port (13) and the second threading port (15) are connected.

8. The adjustable angle stem structure according to claim 1, characterized in that, A front handlebar fixing member (16) is fixedly installed on the handlebar stem tube (2), and a handlebar locking hole (500) is formed between the front handlebar fixing member (16) and the handlebar stem tube (2).

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