CN210912749U - Thread Replacement Structure for Bicycle Axle Parts - Google Patents

Abstract

The utility model discloses a thread replacing structure of a bicycle shaft part, which comprises a shaft rod, a quick-release component and a thread replacing component, wherein a connecting end and a driving end are respectively arranged at the two ends of the shaft rod, a connecting screw hole is arranged on the end surface of the connecting end, the quick-release component is combined with the driving end of the shaft rod, the thread replacing component comprises a combining part and a screwing part, the outer peripheral surface of the combining part is provided with an external thread for screw locking in the combining screw hole, and the outer peripheral surface of the screwing part is provided with an external thread for screw locking in a screw hole of a bicycle frame; therefore, the shaft lever can replace different threads and change the length so as to achieve the purpose of being suitable for being installed on frames with various specifications.

Description

Thread Replacement Structure for Bicycle Axle Parts

technical field

The utility model relates to the technical field of the structure of a bicycle axle, in particular to a bicycle axle capable of changing different threads and changing the length of the axle rod, so as to achieve the functions of being suitable for being installed on the frame of various specifications. Thread replacement structure.

Background technique

As shown in FIG. 1 , a generally known bicycle axle structure is mainly provided with a screw portion 11 at one end of a shaft 10 , and a quick release assembly 12 at the other end. The screw portion 11 is provided with an external thread for Screwed into a screw hole of a frame, the quick release assembly 12 can be used for tightening the frame.

However, according to different brands and specifications of the bicycle frames currently on the market, the size and pitch of the screw holes for the screw lock of the axle rod 10 are not the same, and the wheelbase is also different. It is necessary to cooperate with production to produce bicycle axle parts with various external thread specifications and different axle rod lengths for purchase, which will greatly increase the cost of manufacturers.

In view of this, the creator of the present invention has developed and designed the present utility model by focusing on the above-mentioned problems, deeply conceived, and actively researched and improved trial production.

Utility model content

The main purpose of the present utility model is to solve the problems that the known bicycle axles cannot be universally installed on the frames of various specifications, which will greatly increase the cost of manufacturers.

The thread replacement structure of the bicycle axle part of the utility model comprises a shaft rod, a quick release component and a thread replacement part. Wherein, the two ends of the shaft rod respectively have a set of connecting ends and a driving end, and the end face of the set of connecting ends has a set of connecting screw holes. The quick release assembly is combined with the driving end of the shaft. The thread replacement part includes a connecting portion and a screwing portion, the outer peripheral surface of the connecting portion has external threads for screwing in the screwing hole, and the outer peripheral surface of the screwing portion has external threads for screwing Locked in a screw hole in a frame.

The thread replacement structure of the bicycle axle piece provided by the utility model can be adapted to various frame frames by replacing the thread replacement parts with different threads or lengths, thus achieving cost saving and convenient use. effect.

Description of drawings

1 is a schematic structural diagram of a known bicycle axle;

Fig. 2 is the three-dimensional exploded schematic diagram of the utility model;

Fig. 3 is a three-dimensional combined schematic diagram of the utility model;

4 is an enlarged schematic view of a combined cross-section of the present invention;

5 is a schematic diagram of the use state of the present invention;

6 is a perspective view of another embodiment of the present invention;

7 is a schematic cross-sectional view of another embodiment of the present invention.

Complies with the description:

prior art

10 Shaft 11 Threaded part

12 Quick release components

The utility model

20 Shaft 21 Group End

22 Drive end 23 Assembly screw holes

24 Locating screw hole 25 Embedding part

26 Combined screw holes

30 Quick release components 31 Set parts

32 Shank 33 Hole

34 Slotted hole 35 Coupling bolt

40 Thread Replacement 41 Assembly

42 Threaded part 43 Positioning ring groove

44 Polygon Slot 40a Thread Replacement

42a Threaded part

50 Set screw

60 Frame 61 Taps

62 Washer 63 Fork

64 Wheels

70 Guide pulley 71 Shaft hole

72 Chain slot 73 Bristles

80 Stop Washer

90 chain

Detailed ways

Please refer to FIGS. 2 to 4 , it is shown that the thread replacement structure of the bicycle axle according to the present invention includes a shaft rod 20 , a quick release assembly 30 , a thread replacement part 40 and a positioning bolt 50 , wherein:

The shaft rod 20 has a set of connecting ends 21 and a driving end 22 at both ends respectively. An end surface of the assembly end 21 has a set of screw holes 23 , and an outer peripheral surface has a positioning screw hole 24 penetrating through the assembly screw holes 23 . The driving end 22 has an embedding portion 25 with a larger outer diameter. The outer peripheral surface of the embedding portion 25 is provided with a plurality of protruding teeth, and an end surface of the driving end 22 has a coupling screw hole 26 .

The quick release assembly 30 has a set portion 31 and a handle portion 32 extending from one side of the set portion 31 . One side of the sleeve portion 31 has a set of holes 33 for fitting on the embedded portion 25 , and the other side has a slot 34 penetrating the sleeve hole 33 for a combination bolt 35 to pass through. It is screwed into the coupling screw hole 26 so that the quick release assembly 30 is coupled to the driving end 22 of the shaft rod 20 and can drive the shaft rod 20 to rotate axially.

The screw replacement part 40 includes a connecting part 41 and a screwing part 42 with a larger outer diameter. The outer peripheral surface of the assembling portion 41 has external threads for screwing into the assembling screw holes 23 , and a positioning ring groove 43 is formed on the outer peripheral surface of the assembling portion 41 corresponding to the positioning screw holes 24 . The outer peripheral surface of the screwing portion 42 has external threads for screwing into a screw hole 61 of a frame 60 , and the end surface of the screwing portion 42 has a polygonal groove 44 (such as a hexagonal groove) for a tool (such as a hexagon wrench) is inserted so that force can be applied to turn it.

The positioning bolt 50 is screwed into the positioning screw hole 24 , and one end is embedded in the positioning ring groove 43 of the screw replacement part 40 to prevent the screw replacement part 40 from being easily withdrawn from the assembly screw hole 23 .

Please refer to FIGS. 2 and 5 together, it is pointed out that the bicycle axle according to the present invention can select a suitable thread replacement part 40 according to the specification of the screw hole 61 of the frame 60 , and then set the screw replacement part 40 The connecting portion 41 is screwed into the assembling screw hole 23, and the positioning bolt 50 is used to lock it in place, and then a plurality of washers 62 are fitted on the shaft rod 20, and the shaft rod 20 is passed through the shaft rod 20. The two fork rods 63 of the frame 60 and the hub 64 therebetween, and then the quick release assembly 30 is driven to screw the threaded portion 42 of the threaded replacement part 40 into the screw hole 61 of one of the fork rods 63 of the frame 60 among. When the bicycle axle according to the present invention is to be used in a frame 60 of another specification, it is only necessary to select and replace another suitable thread replacement part 40a, and the screwing part 42a of the thread replacement part 40a can be Different lengths or threads and pitches are prefabricated, so that manufacturers do not need to prepare shafts 20 with different threads and lengths, and consumers only need to buy and replace thread replacement parts 40 and 40a with different threads or lengths. It can be applied to the frame 60 of various specifications, thereby achieving the effects of cost saving and convenient use.

Please refer to FIGS. 6 and 7 , which is another embodiment of the present invention. Its structure is substantially the same as that of the above-mentioned embodiment. The difference is that this embodiment further includes a guide wheel 70 and a stop washer 80 . The shaft rod 20 has a relatively short length, and the screwing part 42 of the threaded replacement part 40 is screwed into the screw hole 61 of the fork rod 63 on one side of the frame 60, so that the bicycle shaft part of the present invention is a cantilever. The shape is coupled to the inner side of the frame 60 . The guide wheel 70 has a through shaft hole 71 in the center for rotatably sleeved on the shaft rod 20 , and a chain groove 72 is provided on the outer peripheral surface for a chain 90 to be wound around. The groove wall of the chain groove 72 A plurality of bristles 73 are provided for cleaning the chain 90 in the chain groove 72 . The stop washer 80 is sleeved on the screwing part 42 of the thread replacement part 40 and sandwiched between the thread replacement part 40 and the shaft rod 20 .

The thread replacement structure of the bicycle axle provided by the utility model can be adapted to various frame 60 of different specifications by replacing the thread replacement parts 40 and 40a with different threads or lengths, so that the saving can be achieved. cost and ease of use.

To sum up, since the utility model has the above-mentioned advantages and practical value, and no similar products have been published in similar products, it has met the application requirements for a utility model patent, and the application is made in accordance with the law.

Claims (7)

1. A thread exchanging structure of a bicycle axle member, comprising:

the two ends of the shaft lever are respectively provided with a connecting end and a driving end, and the end surface of the connecting end is provided with a group of connecting screw holes;

the quick-release component is combined with the driving end of the shaft lever; and

the screw thread replacing part comprises a combining part and a screw thread part, wherein the outer peripheral surface of the combining part is provided with external screw threads for being screwed in the combining screw hole, and the outer peripheral surface of the screw thread part is provided with external screw threads for being screwed in a screw hole of a bicycle frame.

2. The thread exchanging structure for a bicycle axle member according to claim 1, further comprising a positioning bolt, wherein a positioning screw hole penetrating through the assembling screw hole is formed in an outer peripheral surface of the assembling end, the positioning bolt is screwed into the positioning screw hole, and one end of the positioning bolt can abut against the assembling portion.

3. The thread exchanging structure for a bicycle shaft member according to claim 2, wherein a positioning ring groove is provided in an outer peripheral surface of the assembling portion corresponding to the positioning screw hole, and the positioning ring groove allows one end of the positioning bolt to be inserted therein.

4. The thread-exchanging structure for a bicycle axle member according to claim 1, wherein the driving end has an engaging portion, the engaging portion has a plurality of teeth around an outer peripheral surface thereof, the driving end has a coupling screw hole on an end surface thereof, the quick release assembly has a receiving portion and a shank portion extending from the receiving portion, one side surface of the receiving portion has a receiving hole for receiving the engaging portion, and the other side surface has a slot hole penetrating through the receiving hole for receiving a coupling bolt to be screwed into the coupling screw hole, so that the quick release assembly is coupled to the driving end of the axle rod and can drive the axle rod to rotate axially.

5. The thread exchanging structure for a bicycle shaft member according to claim 1, wherein the end surface of the thread engagement portion has a polygonal groove into which a tool can be inserted to be forcibly rotated.

6. The thread-exchanging structure for a bicycle shaft member according to claim 1, further comprising a guide wheel, wherein the guide wheel has a through-hole at a center thereof for freely rotatably engaging with the shaft, a chain slot is formed around an outer circumferential surface thereof for a chain to be wound around, and a plurality of bristles are formed on a wall of the chain slot for cleaning the chain in the chain slot.

7. The bicycle axle member thread exchanging structure of claim 6, further comprising a stop washer for being sleeved on the threaded portion of the thread substitute member and being clamped between the thread substitute member and the axle rod.

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