Internal cabling frame structure and bicycle

Abstract

The utility model discloses an internal cabling frame structure and a bicycle, the internal cabling frame structure comprises a handlebar assembly, a handlebar stem, a front fork vertical tube, a bicycle head tube and a plurality of first cabling, a first hollow channel is formed in the handlebar stem, the first end of the handlebar stem is arranged in the middle of the handlebar assembly, and a handlebar through hole is formed in the middle of the handlebar assembly; the handlebar through hole is communicated with the first hollow channel; the front fork vertical pipe is sleeved with the bicycle head pipe, and the second end of the handlebar stem is arranged at the upper end of the front fork vertical pipe and located above the bicycle head pipe. A second hollow channel is formed by the outer side wall of the front fork vertical pipe and the inner side wall of the bicycle head pipe, an expansion hanging core assembly is arranged in the front fork vertical pipe, and a third hollow channel is formed in the expansion hanging core assembly. The first wires penetrate out of the handlebar through hole from the interior of the handlebar assembly, after passing through the first hollow channel, the first number of first wires penetrate out of the second hollow channel, and the second number of first wires penetrate out of the third hollow channel; therefore, the full-inner wiring design of the frame is realized, and the riding safety of the bicycle is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bicycle technical field especially relates to a inside wiring frame structure and bicycle. BACKGROUND

[0002] The wiring design of the bicycle not only influences the appearance aesthetic property of the bicycle, still directly relates to the operation convenience, safety of the rider and the maintenance convenience of the whole vehicle. The bicycle in the prior art generally adopts the external wiring scheme, that is, the brake line, the control wiring of the speed change line is directly exposed to the outside of the frame, passes through the guide pipe reserved in the frame or directly arranges on the surface of the frame. Although this design is simple in structure, easy to install and maintain, but the aesthetic property is insufficient, and there is certain safety hidden danger, for example, the external wiring is damaged due to the scratch of external objects such as branches, stones, causes the brake failure or the speed change is not smooth, increases the riding risk. SUMMARY

[0003] Therefore, the utility model provides a inside wiring frame structure and bicycle for solving the riding safety hidden danger problem caused by the frame external wiring scheme in the prior art.

[0004] In order to achieve one or part or all of the above purposes or other purposes, the first aspect of the utility model provides a inside wiring frame structure, including handlebar assembly, stem, front fork vertical pipe, stem pipe and a plurality of first wiring,

[0005] The first hollow channel is formed in the stem, the stem includes the opposite first end and the second end, the first end of the stem is arranged in the middle part of the handlebar assembly, the handlebar through hole is formed in the middle part of the handlebar assembly, and the handlebar through hole is communicated with the first hollow channel;

[0006] The front fork vertical pipe is sleeved in the stem pipe, the second end of the stem is arranged on the upper end of the front fork vertical pipe and above the stem pipe;

[0007] The second hollow channel is formed between the outer side wall of the front fork vertical pipe and the inner side wall of the stem pipe, the hollow cavity is formed in the inside of the front fork vertical pipe, the expansion hanger core assembly is arranged in the hollow cavity, a plurality of third hollow channels are arranged in the expansion hanger core assembly, and the second hollow channel and each third hollow channel are communicated with the first hollow channel;

[0008] The first wiring is arranged in the handlebar assembly, and the first wiring is arranged in the first hollow channel, the first number of first wiring is arranged in the second hollow channel, and the second number of first wiring is arranged in the third hollow channel.

[0009] Further, the front fork vertical tube outer side wall and the vehicle head tube inner side wall further form a fourth hollow channel, and the fourth hollow channel is through with the first hollow channel.

[0010] Further, the fourth hollow channel and the second hollow channel are separately arranged on opposite sides of the front fork vertical tube.

[0011] Further, the front fork branch and the front wheel control part are further included, the lower end of the front fork vertical tube is connected to the front fork branch, and the second number of first wires are arranged from the third hollow channel to the inside of the front fork branch until reaching and being connected to the front wheel control part.

[0012] Further, the vehicle frame and the rear wheel control part are further included, the first number of first wires are arranged from the second hollow channel to the inside of the vehicle frame until reaching and being connected to the rear wheel control part.

[0013] Further, the adjusting knob, the second wire and the pedal control part are further included, the adjusting knob is connected to the handlebar and connected to one end of the second wire inside the handlebar, the second wire is arranged from the first hollow channel to the fourth hollow channel until reaching and being connected to the pedal control part.

[0014] Further, the mounting hole is arranged above the handlebar, the handlebar cover is arranged above the mounting hole to close the mounting hole, the handlebar cover has the oil storage space inside, the handlebar cover is provided with the oil inlet and the oil outlet, the adjusting knob is connected to the oil inlet, and the oil outlet is connected to the second wire.

[0015] Further, the inner wall of the oil inlet is provided with threads, the adjusting knob includes the knob cover and the external thread assembly, the external thread assembly includes the opposite first end and the second end, the first end of the external thread assembly is connected to the knob cover, the second end of the external thread assembly is provided with the sealing ring, the second end of the external thread assembly is inserted into the oil inlet and connected to the oil inlet through threads, the sealing ring is attached to the inner wall of the oil inlet, and the knob cover is sleeved on the outer wall of the oil inlet.

[0016] Further, the inside of the knob cover is provided with the connecting bolt, the first end of the external thread assembly is provided with the connecting groove, and the connecting bolt is inserted into the connecting groove to connect the knob cover and the external thread assembly.

[0017] Further, the insertion hole is arranged on the knob cover, the insertion hole is provided with the pearl rotating assembly, the pearl rotating assembly includes the fixed part and the pearl, the fixed part is mounted in the insertion hole, the pearl is arranged at the end of the fixed part, the outer wall of the oil inlet is provided with the groove, the pearl is arranged in the groove, and a plurality of convex ribs are arranged in the groove.

[0018] Further, the expansion core assembly comprises a first expansion part, a second expansion part, an expansion bolt and a ring-shaped fixing part,

[0019] The first expansion part is arranged symmetrically opposite to the second expansion part, one third hollow channel is arranged in the first expansion part, and one third hollow channel is arranged in the second expansion part;

[0020] A first semi-cylindrical groove is arranged on the side of the first expansion part opposite to the second expansion part, a second semi-cylindrical groove is arranged on the side of the second expansion part opposite to the first expansion part, the first semi-cylindrical groove and the second semi-cylindrical groove form a cylindrical groove, and the expansion bolt is arranged in the cylindrical groove;

[0021] A first C-shaped groove is arranged on the outer side wall of the first expansion part, a second C-shaped groove is arranged on the outer side wall of the second expansion part, the first C-shaped groove and the second C-shaped groove form a ring-shaped groove, the ring-shaped groove is in a plane perpendicular to the third hollow channel, and the ring-shaped fixing part is arranged in the ring-shaped groove.

[0022] Further, the cylindrical groove comprises a first conical groove, a cylindrical groove and a second conical groove arranged in sequence from top to bottom, and the expansion bolt comprises an adjusting bolt, a first conical part matched with the first conical groove, an inner core matched with the cylindrical groove and a second conical part matched with the second conical groove arranged in sequence from top to bottom.

[0023] Further, the second end of the handlebar is clamped to the upper end of the front fork vertical pipe, the expansion core assembly is arranged in the inside of the upper end of the front fork vertical pipe, and the expansion core assembly and the second end of the handlebar are respectively located on the inner side and the outer side of the same position of the front fork vertical pipe.

[0024] The second aspect of the utility model provides a bicycle comprising the internal wiring frame structure.

[0025] The utility model discloses the embodiment, will have the following beneficial effects:

[0026] The inner wiring frame structure comprises a handlebar assembly, a handle post, a front fork vertical pipe, a front pipe and a plurality of first wirings, the first end of the handle post is arranged in the middle part of the handlebar assembly, a handlebar through hole is formed in the middle part of the handlebar assembly, the handlebar through hole and the first hollow channel in the handle post are communicated, the front fork vertical pipe is sleeved in the front pipe, a second hollow channel is formed between the outer sidewall of the front fork vertical pipe and the inner sidewall of the front pipe, the expansion hanging core assembly is arranged in the front fork vertical pipe, a plurality of third hollow channels are arranged in the expansion hanging core assembly, the second hollow channel and each third hollow channel are communicated with the first hollow channel, the plurality of first wirings are arranged in the handlebar assembly and pass through the handlebar through hole, are divided into two groups after passing through the first hollow channel, one group of first wirings passes through the second hollow channel, and one group of first wirings passes through the third hollow channel, the full inner wiring design of the frame is realized, all wirings are hidden in the frame, the disorder of external wiring is avoided, and the overall appearance of the bicycle is improved; meanwhile, the damage risk of external wiring caused by environmental factors is avoided, and the safety of riding is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0028] Among them:

[0029] Figure 1 It is a whole structure schematic view of the inner wiring frame structure in an embodiment;

[0030] Figure 2 It is an exploded schematic view of the handlebar assembly and the handle post in an embodiment;

[0031] Figure 3 It is a structure schematic view of the front fork vertical pipe and the front pipe before assembly in an embodiment;

[0032] Figure 4 It is a structure schematic view of the front fork vertical pipe and the expansion hanging core assembly after assembly in an embodiment;

[0033] Figure 5 It is a distribution schematic view of the inner wiring in an embodiment;

[0034] Figure 6 It is a structure schematic view of the handle post in an embodiment;

[0035] Figure 7Figure 8 is a schematic view of a structure of a front fork vertical tube and a handle tube assembled in one embodiment;

[0036] Figure 8 Figure 9 is a schematic view of a structure of an expansion core-hanging assembly in one embodiment;

[0037] Figure 9 Figure 10 is an exploded schematic view of a front fork vertical tube and an expansion core-hanging assembly in one embodiment;

[0038] Figure 10 Figure 11 is a schematic view of a structure of a first expansion portion and a second expansion portion in one embodiment;

[0039] Figure 11 Figure 12 is a schematic view of a structure of a first expansion portion in one embodiment; Figure 10 Figure 13 is a left view of a first expansion portion in one embodiment;

[0040] Figure 12 Figure 14 is a schematic view of a structure of a handle tube cover with an adjustment knob mounted in one embodiment;

[0041] Figure 13 Figure 15 is a schematic view of a structure of a handle tube cover with an adjustment knob mounted in one embodiment;

[0042] Figure 14 Figure 16 is an exploded schematic view of a handle tube cover with an adjustment knob mounted in one embodiment;

[0043] Figure 15 Figure 17 is a schematic view of a structure of a handle tube cover in one embodiment;

[0044] Figure 16 Figure 18 is a perspective schematic view of a bicycle in one embodiment.

[0045] BRIEF DESCRIPTION OF DRAWINGS

[0046] 1: handlebar assembly; 101: handlebar through hole; 102: handle;

[0047] 2: handle tube; 201: first end; 2011: first bolt; 202: second end; 2021: opening portion; 2022: second bolt; 203: mounting hole; 2031: wire hole; 204: handle tube cover; 2041: oil inlet; 2042: screw thread; 2043: groove; 2044: convex rib; 2045: oil outlet; 2046: snap spring groove; 2047: snap spring;

[0048] 3: front fork vertical tube; 31: front fork branch portion; 32: front wheel control portion;

[0049] 4: head tube; 41: frame; 42: rear wheel control portion;

[0050] 5: first wire;

[0051] 6: expansion core suspension assembly; 601: first expansion part; 6011: first half-cylindrical groove; 6012: first C-shaped groove; 602: second expansion part; 6021: second half-cylindrical groove; 6022: second C-shaped groove; 603: expansion bolt; 6031: adjusting bolt; 6032: first conical part; 6033: inner core; 6034: second conical part; 604: annular fixing part; 605: cylindrical groove; 6051: first conical groove; 6052: cylindrical groove; 6053: second conical groove; 606: annular groove;

[0052] 7: adjusting knob; 701: knob cover; 7011: connecting bolt; 7012: insertion hole; 7013: fixing part; 7014: rotating bead; 702: external thread assembly; 7023: connecting groove; 703: sealing ring;

[0053] 8: second wire; 9: foot control part;

[0054] 1a: first hollow channel; 2a: second hollow channel; 3a: third hollow channel; 4a: fourth hollow channel. DETAILED DESCRIPTION

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the specification herein is for describing particular embodiments only and is not intended to be limiting of the application; the present application is well suited to carry out the objects and advantages thereof and will be understood by practitioners of the art. The terms "comprise" (comprising), "have" (having) and "include" (including) as used herein are meant to be interpreted in a non-limiting manner. The terms "first", "second", "third", etc. are used to distinguish different objects, not to describe a particular order.

[0056] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that the embodiments described herein are merely examples from a much larger number of embodiments that can be claimed.

[0057] In order to make the technical personnel in the technical field better understand the application scheme, the technical solutions in the embodiments of the application will be clearly and completely described below in conjunction with the drawings.

[0058] Reference Figures 1-4 The embodiment of the application shows a kind of inner wire frame structure, including handlebar assembly 1, handle 2, front fork vertical tube 3, stem tube 4 and several first wires 5,

[0059] The first hollow channel 1a is formed inside the stem 2, the stem 2 comprises a first end 201 and a second end 202, the first end 201 of the stem 2 is arranged at the middle part of the handlebar assembly 1, the handlebar assembly 1 is provided with a handlebar through hole 101, the handlebar through hole 101 is through the first hollow channel 1a;

[0060] The front fork vertical pipe 3 is sleeved in the front pipe 4, the second end 202 of the stem 2 is arranged at the upper end of the front fork vertical pipe 3 and above the front pipe 4;

[0061] The second hollow channel 2a is formed between the outer wall of the front fork vertical pipe 3 and the inner wall of the front pipe 4, the hollow cavity is formed inside the front fork vertical pipe 3, the expansion hanging core assembly 6 is arranged in the hollow cavity, a plurality of third hollow channels 3a are arranged in the expansion hanging core assembly 6, the second hollow channel 2a and each third hollow channel 3a are through the first hollow channel 1a;

[0062] The first wires 5 are arranged in the handlebar assembly 1, the first wires 5 are arranged in the first hollow channel 1a, the first number of first wires 5 are arranged in the second hollow channel 2a, and the second number of first wires 5 are arranged in the third hollow channel 3a.

[0063] In the embodiment, the handlebar assembly 1 comprises a handle 102, a brake and other components, usually the starting end of the inner wires of the brake wire and the gear wire is arranged at the handle 102 of the handlebar assembly 1, the first wire 5 of the embodiment starts from the control component (such as brake, knob and the like) of the handlebar assembly 1, passes through the inside of the handlebar assembly 1, is arranged out of the handlebar through hole 101 arranged at the middle part of the handlebar assembly 1, and then enters the inside of the stem 2 connected with the handlebar assembly 1. The first end 201 of the stem is tightly clamped in the middle part of the handlebar assembly 1 by the first bolt 2011 and other fasteners, so that the first wire arranged out of the handlebar assembly 1 is arranged into the inside of the stem 2 without exposure.

[0064] The inside of the stem 2 is the first hollow channel 1a for arranging and containing each wire. The mounting hole 203 is arranged above the stem 2, which is convenient for connecting each wire during the assembly of the frame. The shape of the mounting hole 203 should be matched with the position of the wire. The stem cover 20404 for closing the mounting hole 203 is arranged above the mounting hole 203. The stem cover 20404 is detachably connected with the stem 2.

[0065] The second end 202 of the handlebar is sleeved on the upper end of the front fork vertical pipe 3, and the opening part 2021 of the second end 202 of the handlebar is locked by the second bolt 2022 and other fasteners to stably clamp the second end 202 of the handlebar on the upper end of the front fork vertical pipe 3. The cross section of the inner surface of the second end 202 of the handlebar is circular, and the cross section of the front fork vertical pipe 3 is not circular but has a special shape with a partial circular arc segment. After the second end 202 of the handlebar is sleeved on the upper end of the front fork vertical pipe 3, the circular arc segment of the front fork vertical pipe 3 is fitted with the inner surface of the second end of the handlebar, and the non-circular arc segment surface of the front fork vertical pipe 3 forms a first gap with the inner surface of the second end 202 of the handlebar for the first number of first wires to pass through. Similarly, the inner side wall of the front pipe 4 has a circular cross section, and the non-circular arc segment surface of the front fork vertical pipe 3 forms a cavity, i.e., the second hollow channel 2a, with the inner side wall of the front pipe. The first number of first wires 5 enters the second hollow channel 2a after passing through the first gap. The non-circular arc segment surface of the front fork vertical pipe 3 can be a straight line segment or a circular arc segment with a small radius, so as to form a cavity for accommodating the first number of first wires 5 with the inner surface of the second end 202 of the handlebar and the inner side wall of the front pipe 4. In a specific embodiment, the cross section of the front fork vertical pipe 3 is a D-shaped structure including a C-shaped circular arc and a straight line segment.

[0066] The front fork vertical pipe 3 has a hollow structure and is internally provided with an expanded core suspension assembly 6. The expanded core suspension assembly 6 has the effect of strengthening the structural strength of the front fork vertical pipe 3, and internally has a plurality of third hollow channels 3a for the second number of first wires 5 to pass through. In a specific embodiment, the first number is two, the second number is two, and the third hollow channel 3a also has two corresponding to the second number.

[0067] The internal wire bicycle frame structure of the embodiment is a full internal wire design, all wires are hidden inside the frame, avoiding the disorder of external wires, improving the overall beauty of the bicycle; at the same time, it also avoids the damage risk of external wires caused by environmental factors, greatly improving the safety of riding.

[0068] Reference Figure 7 In an embodiment, the fourth hollow channel 4a is formed between the outer side wall of the front fork vertical pipe 3 and the inner side wall of the front pipe 4, and the fourth hollow channel 4a is in communication with the first hollow channel 1a.

[0069] In the embodiment, the cross section of the front fork vertical tube 3 is not circular, but has a special shape with several circular arc segments and several non-circular arc segments. For example, the cross section of the front fork vertical tube 3 includes two opposite circular arcs and two opposite straight line segments. The face corresponding to one straight line segment of the cross section of the front fork vertical tube 3 forms a first gap with the inner surface of the second end of the handlebar, and forms a second hollow passage 2a with the inner side wall of the head tube 4. The face corresponding to the other straight line segment of the cross section of the front fork vertical tube 3 forms a second gap with the inner surface of the second end 202 of the handlebar, and forms a fourth hollow passage 4a with the inner side wall of the head tube 4. For a bicycle design with a larger number of internal wires, the fourth hollow passage 4a can be added to achieve a full internal wiring design.

[0070] With reference to Figure 7 In one embodiment, the fourth hollow passage 4a and the second hollow passage 2a are arranged on opposite sides of the front fork vertical tube 3.

[0071] In the embodiment, by arranging the second hollow passage 2a and the fourth hollow passage 4a on opposite sides of the front fork vertical tube 3, the layout of the wires can be optimized, the mutual interference between the wires can be avoided, and the smooth transmission of the wires can be ensured. At the same time, the symmetrical structure design is also beneficial to enhance the structural strength of the front fork vertical tube 3 itself.

[0072] In specific implementation, the specific wire path can be designed according to the functional requirements of the bicycle.

[0073] With reference to Figure 1 In one embodiment, the front fork branch 31 and the front wheel control part 32 are further included, the lower end of the front fork vertical tube 3 is connected to the front fork branch 31, and the second number of first wires 5 passes out of the third hollow passage 3a and enters the inside of the front fork branch 31 until reaching and connecting to the front wheel control part 32. The lower end of the front fork vertical tube 3 and the front fork branch 31 form a complete front fork structure. The front wheel control part 32 can be, for example, a brake system, a gear shifting system, etc.

[0074] With reference to Figure 1 In one embodiment, the frame 41 and the rear wheel control part 42 are further included, the first number of first wires 5 passes out of the second hollow passage 2a and enters the inside of the frame 41, transmits along the preset path inside the frame 41, and reaches and connects to the rear wheel control part 42. The rear wheel control part 42 can be, for example, a brake system, a gear shifting system, etc.

[0075] With reference to Figure 5 and Figure 6In one embodiment, the handlebar 2 is further provided with an adjusting knob 7, a second wire 8 and a pedal control part 9. The adjusting knob 7 is connected to the handlebar 2 and connected to one end of the second wire 8 inside the handlebar 2. The second wire 8 passes through the first hollow channel 1a and the fourth hollow channel 4a and is connected to the pedal control part 9. The pedal control part 9 can be, for example, a gear shifting system, a brake system, a suspension system, etc. Correspondingly, the mounting hole 203 of the handlebar 2 in this embodiment is additionally provided with a wire hole 2031 for the second wire 8. After passing through the first hollow channel 1a, the second wire 8 passes through the wire hole 2031 and then enters the fourth hollow channel 4a.

[0076] Referring to Figures 12-15 In one embodiment, the handlebar 2 is provided with a mounting hole 203 above which a handlebar cover 204 is arranged to close the mounting hole 203. The handlebar cover 204 has an oil storage space inside. The handlebar cover 204 is provided with an oil inlet 2041 and an oil outlet 2045. The adjusting knob 7 is connected to the oil inlet 2041, and the second wire 8 is connected to the oil outlet 2045. This embodiment has a small and compact adjusting knob 7 mounted on the handlebar, which is convenient for the rider to operate at any time during riding and is not easy to interfere with other control parts of the handlebar. Only the adjusting knob 7 is added from the appearance, which saves the space of the bicycle and makes the design of the bicycle more compact and beautiful.

[0077] In one embodiment, the inner wall of the oil inlet 2041 is provided with a thread 2042. The adjusting knob 7 includes a knob cover 701 and an external thread assembly 702. The external thread assembly 702 includes opposite first and second ends. The first end of the external thread assembly 702 is connected to the knob cover 701. The second end of the external thread assembly 702 is provided with a sealing ring 703. The second end of the external thread assembly 702 is inserted into the oil inlet 2041 and connected to the oil inlet 2041 through the thread 2042. The sealing ring 703 is in contact with the inner wall of the oil inlet 2041. The knob cover 701 is sleeved on the outer wall of the oil inlet 2041.

[0078] In this embodiment, the upright cover 204 is internally designed with an oil storage space for storing hydraulic oil required for brake or gear shifting, and the hydraulic oil fills the oil storage space and the second wire 8. The tank body of the upright cover 204 is provided with an oil inlet 2041 and an oil outlet 2045, and the number of the oil inlet 2041 and the oil outlet 2045 can be determined according to the specific use scene, which can be one or multiple. The oil inlet 2041 is inserted with an external thread assembly 702, and rotating the adjustment knob 7 will drive the external thread assembly 702 connected to the adjustment knob 7 to advance along the thread into the oil inlet 2041 (the advancing direction points to the inside of the oil storage space) or retreat (the retreating direction points to the outside of the oil storage space). The sealing ring 703 tightly fits the inner wall of the oil inlet 2041 to prevent the hydraulic oil from leaking from the oil inlet 2041. The knob cover 701 is sleeved on the outer wall of the oil inlet 2041, which is easy for the rider to operate. When the rider needs to adjust the pressure of the bicycle oil pressure system, he / she only needs to rotate the knob cover 701, and further adjusts the amount of hydraulic oil entering the oil storage space by adjusting the rotation angle of the knob cover 701, thereby achieving precise control of the pressure of the oil pressure system.

[0079] Specifically, when the oil pressure system needs to output hydraulic oil to perform brake or gear shifting, etc., the knob cover 701 is rotated in the first direction, so that the external thread assembly 702 advances along the thread, provides pressure to the hydraulic oil in the oil storage space, and pushes the hydraulic oil to flow out of the oil outlet 2045 into the second wire 8, thereby driving the control components (such as brake system, suspension system, gear shifting system, etc.) connected to the end of the second wire 8 to control the bicycle. When the oil pressure system needs to stop performing brake or gear shifting, etc., the knob cover 701 is rotated in the second direction (the second direction is opposite to the first direction), so that the external thread assembly 702 retreats along the thread, releases the pressure applied to the hydraulic oil in the oil storage space, and the hydraulic oil flows back from the second wire 8 to the oil storage space, thereby suspending the action on the control components (such as brake system, suspension system, gear shifting system, etc.) connected to the end of the second wire 8.

[0080] Referring to Figure 14 In one embodiment, the inside of the knob cover 701 is provided with a connecting bolt 7011, and the first end of the external thread assembly 702 is provided with a connecting groove 7023, and the connecting bolt 7011 is inserted into the connecting groove 7023 to connect the knob cover 701 and the external thread assembly 702.

[0081] In this embodiment, the knob cover 701 is not integrally connected with the outer threaded assembly 702. Instead, the connection between the two is achieved through the cooperation of the connecting bolt 7011 and the connecting groove 7023. The knob cover 701 is fixed outside the handlebar cover 204 and can be rotated. The connecting bolt 7011 is provided with a certain length. When the knob cover 701 is rotated, the connecting bolt 7011 drives the outer threaded assembly 702 to rotate. The outer threaded assembly 702 advances or retreats along the thread. The insertion depth of the connecting bolt 7011 in the connecting groove 7023 decreases or increases. In one specific embodiment, in one embodiment, the connecting bolt 7011 is a hexagonal bolt, and the connecting groove 7023 is a hexagonal hole.

[0082] Referring to Figure 14 In one embodiment, a hole 7012 is formed in the knob cover 701. A pearl shifting assembly is arranged in the hole 7012. The pearl shifting assembly includes a fixed part 7013 and a pearl 7014. The fixed part 7013 is mounted in the hole 7012. The pearl 7014 is arranged at the end of the fixed part 7013. The outer wall of the oil inlet 2041 is provided with a groove 2043. The pearl 7014 is located in the groove 2043. Specifically, the longitudinal section of the oil inlet 2041 is a circular ring. The groove 2043 is an annular groove that surrounds the oil inlet 2041. A plurality of convex ribs 2044 are arranged in the groove 2043.

[0083] In this embodiment, the fixed part 7013 is fixedly installed in the hole 7012 by interference fit or threaded connection. The pearl 7014 is movable relative to the fixed part 7013. The pearl 7014 is arranged in the annular groove. When the rider rotates the knob cover 701, the pearl 7014 slides in the annular groove. When the pearl 7014 touches the convex rib 2044, the pearl 7014 is compressed in the direction of the fixed part 7013. When the pearl 7014 slides into the space between two convex ribs 2044, the pearl 7014 is ejected outward. When the rider rotates the knob cover 701, the rider can hear the clicking sound of rotation and intuitively receive the feedback of the operation on the oil pressure system. The pearl 7014 is limited in the groove 2043, which also achieves stable connection between the adjusting knob 7 and the handlebar cover 204.

[0084] Referring to Figure 14 and Figure 15In one embodiment, the oil outlet 2045 is provided with a spring slot 2046, the second wire 8 is inserted into the oil outlet 2045, and the spring 2047 is clamped at the spring slot 2046, and the two clamping corners of the spring 2047 pass through the spring slot 2046 to clamp and fix the second wire 8. Since the spring 2047 has a certain elasticity and pre-tightening force, when the clamping corner bends inward after passing through the spring slot 2046, it tightly clamps the outer wall of the second wire 8, thereby realizing the stable connection of the second wire 8. The end of the second wire 8 is provided with a sealing ring, thereby realizing the sealing of the oil outlet 2045.

[0085] Referring to Figures 8-11 In one embodiment, the inflatable core hanging assembly 6 comprises a first inflatable part 601, a second inflatable part 602, an inflatable bolt 603, and an annular fixing part 604,

[0086] The first inflatable part 601 and the second inflatable part 602 are arranged in opposite symmetry, one third hollow channel 3a is arranged in the first inflatable part 601, and one third hollow channel 3a is arranged in the second inflatable part 602;

[0087] The opposite side of the first inflatable part 601 is provided with a first half-cylindrical groove 6011, the opposite side of the second inflatable part 602 is provided with a second half-cylindrical groove 6021, the first half-cylindrical groove 6011 and the second half-cylindrical groove 6021 form a cylindrical groove 605, and the inflatable bolt 603 is arranged in the cylindrical groove 605;

[0088] The outer side wall of the first inflatable part 601 is provided with a first C-shaped groove 6012, the outer side wall of the second inflatable part 602 is provided with a second C-shaped groove 6022, the first C-shaped groove 6012 and the second C-shaped groove 6022 form an annular groove 606, the annular groove 606 is in a plane perpendicular to the third hollow channel 3a, and the annular fixing part 604 is arranged in the annular groove 606.

[0089] In this embodiment, the first expansion part 601 and the second expansion part 602 have the same structure and are symmetrically arranged. The first expansion part 601 and the second expansion part 602 are designed separately, and the two can be positioned and closed by the annular fixing part 604. The annular fixing part 604 is arranged in the annular groove 606, and the annular groove 606 should have a certain depth to completely accommodate the annular fixing part 604, so as to avoid the annular fixing part 604 being more protruding than the outer surface of the first expansion part 601 and the second expansion part 602. The annular fixing part 604 can be a rubber ring, a circlip or other components with certain restraining force, so as to realize the preliminary closing and fixing of the first expansion part 601 and the second expansion part 602, and prevent the relative displacement of the first expansion part 601 or the second expansion part 602 in the front fork vertical pipe 3. On the opposite side of the first expansion part 601 and the second expansion part 602, a first half-cylindrical groove 6011 and a second half-cylindrical groove 6021 are arranged respectively. When the first expansion part 601 and the second expansion part 602 are combined together, the two half-cylindrical grooves form a complete cylindrical groove 605. The expansion bolt 603 is arranged in the cylindrical groove 605, and by tightening the expansion bolt 603, the first expansion part 601 and the second expansion part 602 can be expanded to the four directions, so as to be closely attached to the inner wall of the front fork vertical pipe 3, and the purpose of strengthening the structural strength is achieved. In the specific design, the outer peripheral shape of the first expansion part 601 and the second expansion part 602 should be closely matched with the shape of the inner wall of the front fork vertical pipe 3. The expansion core hanging assembly 6 of this embodiment not only has the effect of strengthening the structural strength of the front fork vertical pipe 3, but also can be used as a channel for wiring.

[0090] With reference to Figure 9 and Figure 11 In one embodiment, the cylindrical groove 605 includes a first conical groove 6051, a cylindrical groove 6052 and a second conical groove 6053 arranged in sequence from top to bottom, and the expansion bolt 603 includes an adjusting bolt 6031, a first conical part 6032 matched with the first conical groove 6051, an inner core 6033 matched with the cylindrical groove 6052 and a second conical part 6034 matched with the second conical groove 6053 arranged in sequence from top to bottom.

[0091] In the embodiment, the first conical part 6032 and the inner core 6033 are integrally arranged, the inner core 6033 is inserted from the upper end of the cylindrical groove 605 to the lower end until the first conical part 6032 abuts against the first conical groove 6051, and then the second conical part 6034 is threadedly and rotatably connected to the lower end of the inner core 6033 and is screwed to abut against the second conical groove 6053. The lower end of the adjusting bolt 6031 is connected with the first conical part 6032, and when the adjusting bolt 6031 is rotated, the inner core 6033 is pushed to move downward along the cylindrical groove 6052, and at the same time, the first conical part 6032 and the second conical part 6034 are gradually pressed inward in the first conical groove 6051 and the second conical groove 6053 respectively, so that a radial expansion force is generated, thereby making the expansion core assembly 6 closely fit on the inner wall of the front fork vertical pipe 3, so that a firm fixing effect is achieved. The upper end of the adjusting bolt 6031 is located outside the handlebar 2, for example, can be provided on the handlebar cover 20404, so as to facilitate the rotation operation by using a tool (such as a wrench).

[0092] With reference to Figure 1 and Figure 4 In one embodiment, the second end 202 of the handlebar is clamped at the upper end of the front fork vertical pipe 3, the expansion core assembly 6 is arranged inside the upper end of the front fork vertical pipe 3, and the expansion core assembly 6 and the second end 202 of the handlebar are located on the inner and outer sides of the same position of the front fork vertical pipe 3 respectively.

[0093] In the embodiment, the connection between the front fork vertical pipe 3 and the handlebar 2 is achieved by a clamping device, for example, a clamping interface is arranged at the connection between the second end 202 of the handlebar and the front fork vertical pipe 3, and the clamping interface is locked by a fastener such as a bolt. In order to ensure the stability of the handlebar during riding, a relatively large clamping external force is required when the handlebar 2 is clamped on the front fork vertical pipe 3. However, the front fork vertical pipe 3 in the embodiment of the utility model is a hollow structure (for wiring), and the cross section of the front fork vertical pipe 3 is non-circular, and there is a gap between the handlebar 2, which leads to deformation of the clamped position of the front fork vertical pipe 3 under a relatively large clamping external force, resulting in instability of the overall structure of the bicycle. In order to ensure the stability during riding, the expansion core assembly 6 is arranged inside the front fork vertical pipe 3 and corresponds to the clamped position of the handlebar 2, thereby enhancing the structural strength of the front fork vertical pipe 3 to effectively resist the clamping external force applied by the handlebar 2.

[0094] Specifically, the structure of the expansion suspension core assembly 6 is adapted to the internal shape of the upper end of the front fork vertical pipe 3. The expansion suspension core assembly 6 can be easily placed inside the front fork vertical pipe 3 in an unexpanded state and can tightly fit the inner wall of the front fork vertical pipe 3 after radial expansion. When installed, the first expansion part 601 and the second expansion part 602 are matched, the annular fixing part 604 is sleeved in the annular groove 606, the inner core 6033 is inserted from the upper end of the cylindrical groove 605 to the lower end until the first conical part 6032 abuts against the first conical groove 6051, and then the second conical part 6034 is threadedly connected to the lower end of the inner core 6033 and rotated until it abuts against the second conical groove 6053. Then, it is placed in the position corresponding to the handlebar 2 inside the upper end of the front fork vertical pipe 3. Then, the corresponding wire is passed through the third hollow passage 3a, and the connection of other wires is completed. Then, the second end 202 of the handlebar is clamped in the upper end of the front fork vertical pipe 3, the adjustment of the wire is completed, the handlebar cover 20404 is placed above the handlebar 2, and the adjusting bolt 6031 is inserted from the pre-set bolt hole and connected to the first conical part 6032. Then, the adjusting bolt 6031 is rotated to achieve radial expansion of the expansion suspension core assembly 6, so that it tightly fits the inner wall of the front fork vertical pipe 3.

[0095] Since the expansion suspension core assembly 6 tightly fits the inner wall of the front fork vertical pipe 3, it actually provides an additional support layer for the front fork vertical pipe 3 and enhances the structural strength of the region. The clamping force of the handlebar 2 is no longer dependent on the material strength of the front fork vertical pipe 3 itself, but forms a more solid connection system together with the expansion suspension core assembly 6. Although the third hollow passage 3a is provided in the expansion suspension core assembly 6, the wires arranged therein fill the hollow area, thereby forming an almost solid expansion member in structure, achieving internal wiring while significantly enhancing the structural strength of the front fork vertical pipe 3 in the connection region, so that it can better withstand the clamping external force transmitted by the handlebar 2 and reduce the risk of fatigue fracture due to long-term stress concentration.

[0096] With reference to Figure 16 The embodiments of the utility model also show a bicycle comprising the internal wiring frame structure of any of the preceding embodiments.

[0097] The bicycle of the embodiment adopts a full internal wiring frame structure design, all wires are hidden inside the frame, avoiding the disorder of external wiring and improving the overall aesthetics of the bicycle; at the same time, it also avoids the damage risk of external wiring caused by environmental factors, greatly improving the safety of riding.

[0098] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments, and the preferred embodiments of the present application are given in the drawings, but do not limit the patent scope of the present application. The present application can be realized in many different forms, and conversely, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing specific embodiments, or equivalently replace some of the technical features. Any equivalent structure made by using the content of the present application specification and drawings, directly or indirectly used in other related technical fields, is also within the patent protection scope of the present application.

Claims

1. An internal wiring frame structure, characterized in that, The handlebar assembly, the stem, the front fork vertical tube, the front pipe and a plurality of first wires, The stem is internally formed with a first hollow channel, the stem includes opposite first and second ends, the first end of the stem is arranged in the middle of the handlebar assembly, the handlebar assembly is provided with a handlebar through hole, and the handlebar through hole is in communication with the first hollow channel; The front fork vertical tube is sleeved in the front pipe, the second end of the stem is arranged at the upper end of the front fork vertical tube and located above the front pipe; The outer side wall of the front fork vertical tube and the inner side wall of the front pipe form a second hollow channel, the inner part of the front fork vertical tube is formed with a hollow cavity, the expansion hanging core assembly is arranged in the hollow cavity, a plurality of third hollow channels are arranged in the expansion hanging core assembly, and the second hollow channel and each third hollow channel are in communication with the first hollow channel; The plurality of first wires are arranged in the handlebar assembly and pass out of the handlebar through hole, pass through the first hollow channel, and then a first number of first wires pass out of the second hollow channel and a second number of first wires pass out of the third hollow channel.

2. The inner wiring car frame structure according to claim 1, wherein The outer side wall of the front fork vertical tube and the inner side wall of the front pipe further form a fourth hollow channel, and the fourth hollow channel is in communication with the first hollow channel.

3. The inner wiring car frame structure according to claim 2, wherein The fourth hollow channel and the second hollow channel are arranged on opposite sides of the front fork vertical tube.

4. The inner wiring car frame structure according to claim 1 or 2, characterized by The front fork branch and the front wheel control part are further arranged, the lower end of the front fork vertical tube is connected to the front fork branch, the second number of first wires pass out of the third hollow channel and then enter the inner part of the front fork branch, and finally reach and are connected to the front wheel control part.

5. The inner wiring car frame structure according to claim 1 or 2, wherein The frame and the rear wheel control part are further arranged, the first number of first wires pass out of the second hollow channel and then enter the inner part of the frame, and finally reach and are connected to the rear wheel control part.

6. The inner wiring car frame structure according to claim 2, wherein The adjustment knob, the second wire and the pedal control part are further arranged, the adjustment knob is connected to the stem and connected to one end of the second wire in the stem, the second wire passes through the first hollow channel, passes into the fourth hollow channel, and finally reaches and is connected to the pedal control part.

7. The inner wiring car frame structure according to claim 6, wherein The mounting hole is arranged above the stem, the stem cover is arranged above the mounting hole and covers the mounting hole, the stem cover is provided with an oil inlet and an oil outlet, the adjustment knob is connected to the oil inlet, and the oil outlet is connected to the second wire.

8. The inner wiring car frame structure according to claim 7, wherein The inner wall of the oil inlet is provided with threads, the adjustment knob includes a knob cover and an external thread assembly, the external thread assembly includes opposite first and second ends, the first end of the external thread assembly is connected to the knob cover, a sealing ring is sleeved on the second end of the external thread assembly, the second end of the external thread assembly is inserted into the oil inlet and connected to the oil inlet through threads, the sealing ring is attached to the inner wall of the oil inlet, and the knob cover is sleeved on the outer wall of the oil inlet.

9. The inner wiring car frame structure according to claim 8, wherein The inner side of the knob cover is provided with a connecting bolt, the first end of the external thread assembly is provided with a connecting groove, and the connecting bolt is inserted into the connecting groove to connect the knob cover and the external thread assembly.

10. The inner wiring car frame structure according to claim 8, wherein The knob cover is provided with a hole, a rotating bead assembly is arranged in the hole, the rotating bead assembly comprises a fixed part and a rotating bead, the fixed part is arranged in the hole, the rotating bead is arranged at the end of the fixed part, the outer wall of the oil inlet is provided with a groove, the rotating bead is arranged in the groove, and a plurality of convex ribs are arranged in the groove.

11. The inner wiring car frame structure according to claim 1 or 2, wherein The expansion core assembly comprises a first expansion part, a second expansion part, an expansion bolt and an annular fixing part, The first expansion part and the second expansion part are arranged in opposite symmetry, one third hollow channel is arranged in the first expansion part, and one third hollow channel is arranged in the second expansion part; One side of the first expansion part opposite to the second expansion part is provided with a first semi-cylindrical groove, one side of the second expansion part opposite to the first expansion part is provided with a second semi-cylindrical groove, the first semi-cylindrical groove and the second semi-cylindrical groove form a cylindrical groove, and the expansion bolt is arranged in the cylindrical groove; The outer side wall of the first expansion part is provided with a first C-shaped groove, the outer side wall of the second expansion part is provided with a second C-shaped groove, the first C-shaped groove and the second C-shaped groove form an annular groove, the annular groove is in a plane perpendicular to the third hollow channel, and the annular fixing part is arranged in the annular groove.

12. The inner wiring car frame structure according to claim 11, wherein The cylindrical groove comprises a first conical groove, a cylindrical groove and a second conical groove arranged in sequence from top to bottom, and the expansion bolt comprises an adjusting bolt, a first conical part matched with the first conical groove, an inner core matched with the cylindrical groove and a second conical part matched with the second conical groove arranged in sequence from top to bottom.

13. The inner wiring car frame structure according to claim 1, wherein The second end of the handlebar is clamped to the upper end of the front fork vertical pipe, the expansion core assembly is arranged in the inside of the upper end of the front fork vertical pipe, and the expansion core assembly and the second end of the handlebar are respectively located on the inner and outer sides of the same position of the front fork vertical pipe.

14. A bicycle characterized in that, The frame structure comprises the frame structure of claim 1-13. The frame structure comprises the frame structure of claim 1-13.

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