Wire pulling oil brake device and bicycle

Abstract

The wire pulling oil brake device is used for being installed on a handlebar of the bicycle and comprises a piston cylinder, a piston rod and a pull wire, the piston cylinder is provided with a piston cavity, an oil storage cavity, a connecting through hole and an oil injection hole, the piston cavity is communicated with the oil storage cavity through the connecting through hole, the oil storage cavity is communicated with the oil injection hole, and the pull wire is arranged on the piston cylinder. The piston rod is movably installed in the piston cavity, one end of the pull wire is connected with the piston rod, the other end of the pull wire is connected with a brake rod of the bicycle, and the oil storage cavity is arranged above the piston cavity when observed in the advancing direction of the bicycle. According to the utility model, the oil storage cavity is arranged above the piston cavity, so that hydraulic oil can automatically flow into the piston cavity under the action of gravity, and the oil supplementing effect is improved; and meanwhile, the gas generally rises to the top of the piston cavity and flows into the oil storage cavity in the oil injection process, and the gas in the piston cavity can be completely exhausted, so that the stability of hydraulic oil in the piston cavity is kept, and the braking effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycles, in particular to a wire-pull oil brake device and a bicycle. Background Art

[0002] In the existing oil brake system, the oil storage chamber and the piston chamber are usually arranged on the same side. When the hydraulic oil stored in the oil storage chamber and the piston chamber is lower than the through hole between the oil storage chamber and the piston chamber, the hydraulic oil in the oil storage chamber cannot flow into the piston chamber so as to replenish the piston chamber in time, and the oil replenishment effect is poor; and, in the process of replenishing the piston chamber with the hydraulic oil in the oil storage chamber, since the oil storage chamber and the piston chamber are usually arranged on the same side, the gas on the top of the piston chamber cannot be effectively discharged, which will have a corresponding impact on the braking of the oil brake system, thereby causing corresponding safety accidents. Utility Model Content

[0003] The utility model aims to provide a wire-pull oil brake device and a bicycle, aiming to solve the problems of poor oil replenishing effect and poor braking effect of the existing oil brake system.

[0004] An embodiment of the utility model provides a cable-pull oil brake device for installation on the handlebar of a bicycle, comprising: a piston cylinder, a piston rod and a pull cable, wherein the piston cylinder is provided with a piston chamber, an oil storage chamber, a connecting through hole and an oil injection hole, the piston chamber and the oil storage chamber are connected via the connecting through hole, the oil storage chamber is connected with the oil injection hole, the piston rod is movably installed in the piston chamber, one end of the pull cable is connected to the piston rod, and the other end of the pull cable is connected to the brake rod of the bicycle, wherein, when observed along the forward direction of the bicycle, the oil storage chamber is arranged above the piston chamber.

[0005] Furthermore, when viewed along the forward direction of the bicycle, the oil filling hole is arranged above the oil storage cavity.

[0006] Furthermore, when observed along the height direction of the bicycle, the projection of the oil filling hole does not overlap with the projection of the handlebar.

[0007] Furthermore, a detachable oil filling seal for sealing the oil filling hole is provided on the oil filling hole, and when observed along the height direction of the bicycle, the projection of the oil filling seal does not overlap with the projection of the handlebar.

[0008] Furthermore, it also includes: an oil replenishing member and an oil storage cover for sealing the oil storage chamber, the oil storage cover is detachably arranged on the piston cylinder, the oil replenishing member is arranged between the oil storage chamber and the oil storage cover, and the oil replenishing member can be deformed with the pressure difference on both sides.

[0009] Further, a filling cavity is formed between the oil replenishing member and the oil storage cover, and the filling cavity is filled with gas; or, the oil storage cover is provided with an oil replenishing hole, one end of the oil replenishing hole is connected to the filling cavity, and the other end of the oil replenishing hole is connected to the atmosphere.

[0010] Furthermore, the bottom surface of the oil storage cavity is a trumpet structure, and the opening of the trumpet structure faces the oil storage cavity.

[0011] Furthermore, the piston cylinder is provided with an exhaust hole, one end of the exhaust hole is connected to the oil storage chamber, and the other end of the exhaust hole is connected to the atmosphere.

[0012] Furthermore, the horizontal height of the exhaust hole is greater than or equal to the horizontal height of the oil filling hole.

[0013] The utility model also provides a bicycle, comprising: the above-mentioned wire-pull oil brake device.

[0014] The utility model discloses a wire-pull oil brake device and a bicycle. The wire-pull oil brake device is used to be installed on the handlebar of the bicycle, and includes: a piston cylinder, a piston rod and a pull wire. The piston cylinder is provided with a piston chamber, an oil storage chamber, a connecting through hole and an oil injection hole. The piston chamber and the oil storage chamber are connected through the connecting through hole, the oil storage chamber is connected with the oil injection hole, the piston rod is movably installed in the piston chamber, one end of the pull wire is connected to the piston rod, and the other end of the pull wire is connected to the brake rod of the bicycle, wherein, when observed along the forward direction of the bicycle, the oil storage chamber is arranged above the piston chamber. The utility model arranges the oil storage chamber above the piston chamber, so that the hydraulic oil can automatically flow into the piston chamber under the action of gravity, thereby improving the oil replenishment effect; at the same time, the gas usually rises to the top of the piston chamber and flows into the oil storage chamber during the oil injection process, so the oil storage chamber is arranged above the piston chamber to completely discharge the gas in the piston chamber, thereby maintaining the stability of the hydraulic oil in the piston chamber and improving the braking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the structure of the cable-pull oil brake device installed on the handlebar;

[0017] Figure 2 It is a structural schematic diagram of a wire-pull oil brake device;

[0018] Figure 3It is a cross-sectional schematic diagram of a wire-pull oil brake device;

[0019] Figure 4 It is a schematic diagram of the structure of the piston cylinder;

[0020] Figure 5 Exploded view of the oil filling seal, piston cylinder, oil filling part and oil storage cap;

[0021] Figure 6 It is a structural schematic diagram of the oil replenishing part;

[0022] Description of the markings in the figure:

[0023] 1. Handlebar; 2. Piston cylinder; 3. Piston rod; 4. Pull wire; 5. Piston chamber; 6. Oil storage chamber; 7. Connecting through hole; 8. Oil filling hole; 9. Fixing part; 10. Fine-tuning part; 11. Oil filling seal; 12. Oil replenishing part; 13. Oil storage cap. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0026] It should also be understood that the terms used in this utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in this utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0027] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0028] See also Figure 1-4The utility model provides a wire-pull oil brake device, which is used to be installed on a handlebar 1 of a bicycle, including: a piston cylinder 2, a piston rod 3 and a pull wire 4. The piston cylinder 2 is provided with a piston chamber 5, an oil storage chamber 6, a connecting through hole 7 and an oil injection hole 8. The piston chamber 5 and the oil storage chamber 6 are connected through the connecting through hole 7, and the oil storage chamber 6 is connected with the oil injection hole 8. The piston rod 3 is movably installed in the piston chamber 5, one end of the pull wire 4 is connected to the piston rod 3, and the other end of the pull wire 4 is connected to the brake rod of the bicycle, wherein, when viewed along the forward direction of the bicycle, the oil storage chamber 6 is arranged above the piston chamber 5.

[0029] In this embodiment, the oil storage chamber 6 is arranged above the piston chamber 5, so that the hydraulic oil can automatically flow into the piston chamber 5 under the action of gravity, thereby improving the oil replenishing effect; at the same time, the gas usually rises to the top of the piston chamber 5 and flows into the oil storage chamber 6 during the oil injection process. Therefore, the oil storage chamber 6 is arranged above the piston chamber 5. The gas in the piston chamber 5 can be completely discharged, thereby maintaining the stability of the hydraulic oil in the piston chamber 5 and improving the braking effect.

[0030] In this embodiment, it also includes: a fixing member 9 and a fine-tuning member 10. One end of the pull wire 4 passes through the piston cylinder 2, the piston chamber 5, the piston rod 3, the fine-tuning member 10 and the fixing member 9 in sequence and is connected to the fixing member 9. The other end of the pull wire 4 is connected to the brake rod.

[0031] One end of the fine-tuning member 10 is connected to the piston rod 1, and the other end of the fine-tuning member 10 is adjustably connected to the fixing member 9 to adjust the distance between the end of the piston chamber 5 away from the fixing member 9 and the fixing member 9;

[0032] Alternatively, one end of the fine-tuning member 10 is adjustably connected to the piston rod 1 to adjust the distance between the end of the piston chamber 5 away from the fixing member 9 and the fixing member 9, and the other end of the fine-tuning member 10 is connected to the fixing member 9;

[0033] Alternatively, one end of the fine-tuning member 10 is adjustably connected to the piston rod 1 , and the other end of the fine-tuning member 10 is adjustably connected to the fixing member 9 , so as to adjust the distance between the fixing member 9 and the end of the piston chamber 5 away from the fixing member 9 .

[0034] In this embodiment, by providing a fine-tuning part 10, the user only needs to adjust the fine-tuning part 10 to adjust the distance between the end of the piston chamber 5 away from the fixing part 9 and the fixing part 9, thereby achieving precise adjustment of the braking stroke. No special maintenance tools are required, the adjustment method is simple and convenient, and the user experience is significantly improved.

[0035] Furthermore, when viewed along the forward direction of the bicycle, the oil filling hole 8 is arranged above the oil storage chamber 6 .

[0036] Due to gravity, the hydraulic oil will naturally flow into the oil storage chamber 6 from the oil filling hole 8, and will not overflow from the oil filling hole 8. This design effectively reduces the risk of hydraulic oil leakage and keeps the oil brake system clean and stable.

[0037] Furthermore, when viewed along the height direction of the bicycle, the projection of the oil filling hole 8 does not overlap with the projection of the handlebar 1 .

[0038] When the projections of the oil filling hole 8 and the handlebar 1 do not overlap, it means that during maintenance or refueling, the user does not need to move or adjust the position of the cable oil brake device to avoid interference between the handlebar 1 and the oil filling hole 8. This makes the refueling or maintenance process simpler and more direct, and improves the convenience of operation.

[0039] In this embodiment, a detachable oil filling seal 11 (such as a sealant 11) for sealing the oil filling hole 8 is provided on the oil filling hole 8. Figure 5 As shown, when viewed along the height direction of the bicycle, the projection of the oil filling seal 11 does not overlap with the projection of the handlebar 1. The oil filling seal 11 can be a screw or a bolt. The oil filling hole 8 is provided with a thread. The oil filling seal 11 is threadedly connected with the oil filling hole 8. When the oil filling seal 11 is screwed into the oil filling hole 8, the oil filling hole 8 can be sealed. The sealing structure is simple and easy to operate, which greatly improves the reliability and service life of the equipment. At the same time, when viewed along the height direction of the bicycle, the structural design that the projection of the oil filling seal 11 does not overlap with the projection of the handlebar 1 makes it unnecessary for the user to move or adjust the position of the wire pull oil brake device to avoid interference between the handlebar 1 and the oil filling seal 11 during maintenance or refueling. The user can directly take out the oil filling seal 11 and refuel or perform maintenance. This makes the refueling or maintenance process simpler and more direct, and improves the convenience of operation.

[0040] In this embodiment, please refer to Figure 5 and Figure 6 , and also includes: an oil replenishing member 12 and an oil storage cover 13 for sealing the oil storage chamber 6, the oil storage cover 13 is detachably arranged on the piston cylinder 2, the oil replenishing member 12 is arranged between the oil storage chamber 6 and the oil storage cover 13, and the oil replenishing member 12 can be deformed with the pressure difference on both sides.

[0041] When the brake or hydraulic oil is partially consumed, the liquid level in the oil storage chamber 6 decreases to form a negative pressure, and the oil replenishing member 12 can be deformed downward under the action of the pressure difference, thereby ensuring the oil replenishing effect.

[0042] Specifically, a filling cavity is formed between the oil replenishing member 12 and the oil storage cover 13, and the filling cavity is filled with gas; or, the oil storage cover 13 is provided with an oil replenishing hole, one end of the oil replenishing hole is connected to the filling cavity, and the other end of the oil replenishing hole is connected to the atmosphere.

[0043] When the brake or hydraulic oil is partially consumed, the liquid level in the oil storage chamber 6 decreases, and the pressure on both sides of the oil replenishing part 12 is inconsistent. The pressure on the side of the oil replenishing part 12 filled with gas or connected to the atmosphere is greater than the pressure on the side of the oil replenishing part 12 close to the hydraulic oil. Therefore, under the action of the pressure difference, the oil replenishing part 12 is deformed towards the direction of the hydraulic oil, thereby ensuring the oil replenishing effect.

[0044] Furthermore, the oil replenishing member 12 is arranged in a stepped shape, which enables the oil replenishing member 12 to have a larger deformation amount, so that the oil replenishing function can be better realized when the pressure changes.

[0045] In this embodiment, the bottom surface of the oil storage chamber 6 is a trumpet structure, and the opening of the trumpet structure faces the oil storage chamber 6. Since the opening of the trumpet structure faces the oil storage chamber 6, when new hydraulic oil is injected, the hydraulic oil can flow more smoothly from the bottom of the oil storage chamber 6 into the piston chamber 5, so that the gas can be more easily discharged from the piston chamber 5, thereby ensuring the stability and reliability of the braking system.

[0046] In this embodiment, an exhaust hole (not shown in the figure) is provided on the piston cylinder 2, one end of the exhaust hole is connected to the oil storage chamber 6, and the other end of the exhaust hole is connected to the atmosphere.

[0047] The exhaust hole and the oil filling hole 8 are arranged separately, which avoids the mutual interference between the injection and exhaust of the oil storage chamber 6, facilitates the injection and exhaust of the oil storage chamber 6, ensures the removal of gas during the oil filling process, and improves the stability and reliability of the brake system.

[0048] Furthermore, the horizontal height of the exhaust hole is greater than or equal to the horizontal height of the oil filling hole 8. The high-position design of the exhaust hole ensures that the gas accumulated in the oil storage chamber 6 can be discharged more smoothly through the exhaust hole, avoiding the adverse effects of large-scale accumulation of gas on braking performance.

[0049] This embodiment also provides a bicycle, including: the cable-pull oil brake device of the above embodiment.

[0050] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

[0051] It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive.

[0052] Inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, the elements defined by the sentence "including a..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A wire-pull oil brake device, used to be installed on the handlebar of a bicycle, characterized in that: include: A piston cylinder, a piston rod and a pull wire, wherein the piston cylinder is provided with a piston chamber, an oil storage chamber, a connecting through hole and an oil injection hole, the piston chamber and the oil storage chamber are connected via the connecting through hole, the oil storage chamber is connected with the oil injection hole, the piston rod is movably installed in the piston chamber, one end of the pull wire is connected to the piston rod, and the other end of the pull wire is connected to the brake lever of the bicycle, wherein, when viewed along the forward direction of the bicycle, the oil storage chamber is arranged above the piston chamber.

2. The wire-pull oil brake device according to claim 1, characterized in that: Observing along the forward direction of the bicycle, the oil filling hole is arranged above the oil storage chamber.

3. The wire-pull oil brake device according to claim 1, characterized in that: When viewed along the height direction of the bicycle, the projection of the oil filling hole does not overlap with the projection of the handlebar.

4. The wire-pull oil brake device according to claim 1, characterized in that: The oil filling hole is provided with a detachable oil filling seal for sealing the oil filling hole. When observed along the height direction of the bicycle, the projection of the oil filling seal does not overlap with the projection of the handlebar.

5. The wire-pull oil brake device according to claim 1, characterized in that: Also includes: An oil replenishing member and an oil storage cover for sealing the oil storage chamber, wherein the oil storage cover is detachably arranged on the piston cylinder, the oil replenishing member is arranged between the oil storage chamber and the oil storage cover, and the oil replenishing member can be deformed with the pressure difference on both sides.

6. The wire-pull oil brake device according to claim 5, characterized in that: A filling cavity is formed between the oil replenishing member and the oil storage cover, and the filling cavity is filled with gas; or the oil storage cover is provided with an oil replenishing hole, one end of which is connected to the filling cavity, and the other end of which is connected to the atmosphere.

7. The wire-pull oil brake device according to claim 1, characterized in that: The bottom surface of the oil storage cavity is a trumpet structure, and the opening of the trumpet structure faces the oil storage cavity.

8. The wire-pull oil brake device according to claim 1, characterized in that: The piston cylinder is provided with an exhaust hole, one end of the exhaust hole is communicated with the oil storage chamber, and the other end of the exhaust hole is communicated with the atmosphere.

9. The wire-pull oil brake device according to claim 8, characterized in that: The horizontal height of the exhaust hole is greater than or equal to the horizontal height of the oil filling hole.

10. A bicycle, characterized in that: include: A wire-pull oil brake device as described in any one of claims 1 to 9.

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