Oil pressure balance structure and oil pressure brake handle

Abstract

The utility model relates to an oil pressure balance structure and an oil pressure brake handle. The oil pressure balancing structure comprises a brake handle seat, the brake handle seat is provided with an oil cylinder cavity, the oil cylinder cavity is formed in the brake handle seat and filled with oil, the first end of the oil cylinder cavity is communicated with an oil outlet, and the second end of the oil cylinder cavity is provided with an oil pressure driving part used for driving the oil to be output to the oil outlet; the oil pool piece is arranged on the brake handle seat and is provided with an oil pool cavity, the first end of the oil pool cavity is communicated with the oil cylinder cavity through a communicating hole, and a balance module is arranged in the oil pool cavity; the balance module adjusts the capacity of the oil pool cavity when the oil pressure driving piece moves so as to store or release oil liquid to balance the oil pressure in the oil cylinder cavity. According to the oil pressure disc brake, heated and expanded oil enters the oil pool cavity, the oil pushes the piston body to move so as to expand the capacity of the oil pool cavity, and therefore the expanded oil is contained, pressure balance is achieved, the disc locking risk is avoided, and the stable braking effect of the oil pressure disc brake is maintained and optimized; and the piston body is long in service life and small in oil leakage risk.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic brake handles, in particular to a hydraulic balance structure and a hydraulic brake handle. Background Art

[0002] Hydraulic disc brakes use oil as a medium. The force applied to the brake handle pushes the piston inside to compress the oil. The pressure passes directly from the oil pipe to the caliper, thereby pushing the piston inside the caliper, driving the brake pad to clamp the disc and achieve braking. However, when the hydraulic disc brake is applied, the internal oil will conduct the heat of the brake pad and expand due to the heat. The expanded oil will push the brake pad outward to contact the brake disc, resulting in the risk of the disc locking.

[0003] In the prior art, in order to solve the problem of volume expansion of heated oil, an oil pool connected to the oil cylinder is added to the brake handle, and a soft airbag that can expand and shrink with pressure changes is placed in the oil pool. When the oil expands due to heat, it can enter the oil pool from the oil cylinder cavity. The oil compresses the soft airbag to expand the volume of the oil pool cavity, thereby accommodating the expanded oil and achieving pressure balance. However, in this solution, the soft airbag is limited by the material. During long-term use, it is constantly compressed and expanded, has a short service life, and is easy to break. After breaking, oil leakage directly affects the braking effect. Once it happens, the riding risk is extremely high.

[0004] To this end, we propose a hydraulic balance structure and a hydraulic brake handle. Utility Model Content

[0005] The present application provides an oil pressure balance structure and an oil pressure brake handle to at least solve the problem of the pressure balance solution of the soft airbag in the prior art. The soft airbag is limited by the material, has a short service life, is easy to break, and the oil leakage after breaking directly affects the braking effect, which poses a great risk to riding.

[0006] In a first aspect, the present application provides an oil pressure balancing structure, including a brake handle seat, on which is provided:

[0007] An oil cylinder chamber is provided in the brake handle seat and is filled with oil, a first end of the oil cylinder chamber is connected to an oil outlet, and a second end of the oil cylinder chamber is provided with an oil pressure driving member for driving the oil to be output to the oil outlet;

[0008] An oil pool component, which is arranged on the brake handle seat and has an oil pool cavity, a first end of the oil pool cavity is connected with the oil cylinder cavity through a connecting hole, and a balancing module is arranged inside the oil pool cavity;

[0009] Wherein, the balancing module adjusts the capacity of the oil pool cavity when the oil pressure driving component is active, so as to receive or release oil to balance the oil pressure in the oil cylinder cavity.

[0010] Optionally, the balancing module includes:

[0011] A piston body, which is assembled in the oil pool cavity and moves in the oil pool cavity along with the movement of the oil to adaptively adjust the capacity of the oil pool cavity;

[0012] The oil pool cover is limitedly assembled at the second end of the oil pool cavity, and the oil pool cover is provided with an air pressure balance hole connected to the external atmospheric pressure.

[0013] Optionally, a sealing ring is fixedly sleeved on the annular side wall of the piston body, and the annular outer wall of the sealing ring abuts and seals against the inner wall of the oil pool cavity.

[0014] Optionally, an annular step is provided on the inner wall of the second end of the oil pool cavity, and a cotter pin is provided on the side of the oil pool cover facing away from the oil pool cavity, and the cotter pin is clamped at the opening of the second end of the oil pool cavity to cooperate with the annular step to locate the axial position of the oil pool cover.

[0015] Optionally, the hydraulic drive comprises:

[0016] A handle, which is rotatably mounted on the brake handle seat;

[0017] A driving rod, a first end of which is movably connected to the handle and a second end of which extends into the oil cylinder cavity;

[0018] A piston column, which is movably inserted in the oil cylinder cavity, and whose first end is movably connected to the second end of the driving rod, and whose annular side wall is fixedly sleeved with a piston ring;

[0019] An elastic member is arranged in the oil cylinder cavity and is respectively connected to the second end of the piston rod and the inner wall of the first end of the oil cylinder cavity.

[0020] Optionally, the hydraulic drive component also includes:

[0021] The oil cylinder cover is sleeved on the driving rod and clamped on the opening of the second end of the oil cylinder cavity to limit the axial movement position of the piston column in the oil cylinder cavity.

[0022] In a second aspect, the present application provides a hydraulic brake handle, comprising the hydraulic balancing structure described in the first aspect, and further comprising:

[0023] A clamp lock buckle, which is arranged on the brake handle seat to fix the hydraulic brake handle on the frame;

[0024] An oil pipe, a first end of which is connected to the oil outlet, and a second end of which is connected to a brake pump mounted at the front / rear wheel of the bicycle frame;

[0025] There are two brake lower pumps, which are respectively mounted on the front / rear wheels of the bicycle frame and arranged in conjunction with the disc, and the brake lower pumps are respectively connected to the second ends of the two oil pipes to apply oil pressure to the disc.

[0026] Compared with the related art, the hydraulic balance structure and hydraulic brake handle provided by the present application have at least the following technical effects:

[0027] The oil that expands due to heat can enter the oil pool cavity through the connecting hole in the oil cylinder cavity. The oil pushes the piston body to move from the first end to the second end in the oil pool cavity to expand the capacity of the oil pool cavity, thereby accommodating the expanded oil, achieving pressure balance, avoiding the risk of disc lock, and maintaining and optimizing the smooth braking effect of the hydraulic disc brake; and after the oil temperature drops, it automatically flows back to the oil cylinder cavity with reduced pressure, and the piston body automatically resets under the action of the external atmospheric pressure, and has a long service life and a low risk of oil leakage. In this way, the space required for the expansion of the oil during braking is adaptively adjusted, the oil pressure during braking is balanced, the risk of disc lock is avoided, and the smooth braking effect of the hydraulic disc brake is maintained and optimized.

[0028] Details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of a hydraulic brake handle according to an exemplary embodiment.

[0031] Figure 2 It is a schematic cross-sectional view of an oil pressure balancing structure according to an exemplary embodiment.

[0032] Figure 3 yes Figure 2 A magnified schematic diagram of the structure in the middle.

[0033] Figure 4 It is a partial structural stereogram of an oil pressure balancing structure according to an exemplary embodiment.

[0034] Figure 5 is a side view of a hydraulic brake handle structure according to an exemplary embodiment.

[0035] Figure 6 yes Figure 5Cross-sectional view of CC structure. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solution of the utility model in conjunction with the accompanying drawings. 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.

[0037] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the related art, in order to solve the problem of volume expansion of heated oil, an oil pool connected to the oil cylinder is added to the brake handle, and a soft airbag whose volume can expand and shrink with pressure changes is placed in the oil pool. When the oil expands due to heat, it can enter the oil pool from the oil cylinder cavity 101. The oil compresses the soft airbag to expand the capacity of the oil pool cavity 201, thereby accommodating the expanded oil and achieving pressure balance. However, in this solution, the soft airbag is limited by the material. During long-term use, it is constantly compressed and expanded, has a short service life, is easy to break, and oil leakage after breaking directly affects the braking effect. Once it happens, the riding risk is extremely high.

[0040] Based on the above situation, an embodiment of the utility model provides a hydraulic balance structure and a hydraulic brake handle, which are described in detail below in conjunction with specific embodiments and drawings. Example

[0041] An embodiment of the utility model provides an oil pressure balancing structure. Figure 1 It is a schematic diagram of the three-dimensional structure of a hydraulic brake handle according to an exemplary embodiment. Figure 2FIG. 1 is a schematic cross-sectional view of an oil pressure balance structure according to an exemplary embodiment. Figure 1-2 As shown, the oil pressure balance structure includes a brake handle seat 10, and the brake handle seat 10 is provided with:

[0042] The oil cylinder chamber 101 is opened in the brake handle seat 10 and is filled with oil. The first end of the oil cylinder chamber 101 is connected to the oil outlet 103, and the second end of the oil cylinder chamber 101 is installed with an oil pressure driving member 50 for driving the oil to be output to the oil outlet 103. Specifically, it is also necessary to cooperate with: an oil pipe 40, the first end of which is connected to the oil outlet 103, and the second end of which is connected to a brake lower pump mounted on the front / rear wheel of the bicycle frame to apply oil pressure to the disc; two brake lower pumps are respectively mounted on the front / rear wheel of the bicycle frame and matched with the disc, and the brake lower pumps are respectively connected to the second ends of the two oil pipes to apply oil pressure to the disc;

[0043] The oil pool component 20 is arranged on the brake handle seat 10 and has an oil pool cavity 201. It can be understood that the oil pool component 20 can be integrally formed with the brake handle seat 10, and can also be assembled separately from the brake handle seat 10. The first end of the oil pool cavity 201 is connected to the cylinder cavity 101 through a connecting hole 202, and a balancing module 30 is provided therein; wherein, the balancing module 30 adjusts the capacity of the oil pool cavity 201 when the hydraulic drive component 50 is active, so as to accommodate or release oil and balance the oil pressure in the cylinder cavity 101.

[0044] In this embodiment, specifically, Figure 2 It is a schematic cross-sectional view of an oil pressure balancing structure according to an exemplary embodiment. Figure 3 yes Figure 2 A magnified schematic diagram of the structure in the middle. Figure 4 FIG. 1 is a partial structural perspective view of an oil pressure balance structure according to an exemplary embodiment. Figure 2-4 , the balancing module 30 includes:

[0045] The piston body 301 is assembled in the oil pool cavity 201 and moves in the oil pool cavity 201 along with the movement of the oil to adaptively adjust the capacity of the oil pool cavity 201; a sealing ring 302 is fixedly sleeved on the annular side wall of the piston body 301, and the annular outer wall of the sealing ring 302 abuts against the inner wall of the oil pool cavity 201 for sealing;

[0046] The oil pool cover 303 is limitedly assembled at the second end of the oil pool cavity 201 , and a pressure balance hole 304 communicating with the external atmospheric pressure is opened on the oil pool cover 303 .

[0047] In the technical solution of the above embodiment, refer to the attached Figure 1-4In the initial state, the oil is at room temperature, and the piston body 301 is located in the middle of the oil pool chamber 201 or close to the first end of the oil pool chamber 201; when braking, the oil pressure driving member 50 pushes the oil to the oil, which conducts the heat of the brake pad and expands due to the heat. The oil with expanded volume can enter the oil pool chamber 201 through the connecting hole 202 in the cylinder chamber 101 to achieve pressure balance, thereby avoiding the risk of disc locking and maintaining and optimizing the stable braking effect of the hydraulic disc brake;

[0048] At this time, the oil entering the oil pool cavity 201 will push the piston body 301 to move from the first end to the second end in the oil pool cavity 201 to expand the capacity of the oil pool cavity 201, thereby accommodating the expansion volume required by the oil; when the temperature of the oil decreases, its volume shrinks and automatically flows back to the cylinder cavity 101 where the pressure is reduced, and the piston body 301 is also under the action of the external atmospheric pressure. As the oil flows back, it gradually returns to the middle of the oil pool cavity 201 or near the first end of the oil pool cavity 201. Compared with traditional soft airbags, the piston body 301 has a long service life and a low risk of oil leakage. In this way, the space required for the expansion of the oil during braking is adaptively adjusted, the oil pressure during braking is balanced, the risk of disc locking is effectively avoided, and the smooth braking effect of the hydraulic disc brake is maintained and optimized.

[0049] In this embodiment, refer to the attached Figure 3 An annular step 306 is provided on the inner wall of the second end of the oil pool cavity 201, and a cotter pin 305 is provided on the side of the oil pool cover 303 facing away from the oil pool cavity 201. The cotter pin 305 is clamped at the opening of the second end of the oil pool cavity 201 to cooperate with the annular step 306 to locate the axial position of the oil pool cover 303.

[0050] In this embodiment, the oil pool cover 303 is positioned by the annular step 306 and the cotter pin 305 , and is thus positioned at the opening of the second end of the oil pool cavity 201 , so as to prevent the piston body 301 from falling out of the oil pool cavity 201 .

[0051] In this embodiment, Figure 5 is a side view of a hydraulic brake handle structure according to an exemplary embodiment. Figure 6 yes Figure 5 Refer to the attached CC structure section view. Figure 5-6The hydraulic driving component 50 includes: a handle 500, which is rotatably mounted on the brake handle seat 10; a driving rod 501, a first end of which is movably connected to the handle 500, and a second end of which extends into the cylinder cavity 101; a piston column 502, which is movably inserted into the cylinder cavity 101, and a first end of which is movably connected to the second end of the driving rod 501, and a piston ring 503 is fixedly sleeved on its annular side wall; an elastic component 504, which is arranged in the cylinder cavity 101 and respectively connects the second end of the piston column 502 and the inner wall of the first end of the cylinder cavity 101; in this embodiment, the elastic component 504 can be a compression spring; a cylinder cover, which is sleeved on the driving rod 501 and clamped at the opening of the second end of the cylinder cavity 101 to limit the axial movement position of the piston column 502 in the cylinder cavity 101.

[0052] In the technical solution of the above embodiment, refer to the attached Figure 5-6 The rider squeezes the handlebar 500 to push the driving rod 501 into the oil cylinder chamber 101, and then pushes the piston rod 502 and the piston ring 503 to move from the second end to the first end, squeezing the oil in the oil cylinder chamber 101 to be output to the oil pipe 40 through the oil outlet 103, and then output to the brake pump to achieve braking of the bicycle.

[0053] In summary, in the oil pressure balancing structure provided by the embodiment of the utility model, the oil that expands due to heat can enter the oil pool chamber 201 through the connecting hole 202 in the oil cylinder chamber 101, and the oil pushes the piston body 301 to move from the first end to the second end in the oil pool chamber 201 to expand the capacity of the oil pool chamber 201, thereby accommodating the expanded oil, achieving pressure balance, avoiding the risk of disc locking, and maintaining and optimizing the smooth braking effect of the oil pressure disc brake; and after the oil temperature is reduced, it automatically flows back to the oil cylinder chamber 101 with reduced pressure, and the piston body 301 is also automatically reset under the action of the external atmospheric pressure. In this way, the space required for the expansion of the oil during braking is adaptively adjusted, the oil pressure during braking is balanced, the risk of disc locking is avoided, and the smooth braking effect of the oil pressure disc brake is maintained and optimized. Example

[0054] Embodiment 2 of the present invention provides a hydraulic brake handle, including the hydraulic balance structure of embodiment 1 above, and further comprising:

[0055] A clamp lock 102 is provided on the brake handle seat 10 to fix the hydraulic brake handle on the frame of the bicycle or electric bicycle;

[0056] The oil pipe 40 has a first end connected to the oil outlet 103 and a second end connected to a brake pump mounted on the front / rear wheel of the bicycle frame to apply hydraulic brake to the disc;

[0057] There are two brake lower pumps, which are respectively mounted on the front / rear wheels of the bicycle frame and arranged in conjunction with the disc, and the brake lower pumps are respectively connected to the second ends of the two oil pipes to apply oil pressure to the disc.

[0058] For other structures not described, refer to Example 1.

[0059] In summary, the hydraulic balance structure and hydraulic brake handle provided by the embodiment of the utility model, when braking, the hydraulic drive member 50 pushes the oil to the brake pump, the oil will conduct the heat of the brake pad and expand due to the heat, the volume of the expanded oil can enter the oil pool chamber 201 through the connecting hole 202 in the cylinder chamber 101, the oil will push the piston body 301 to move from the first end to the second end in the oil pool chamber 201 to expand the capacity of the oil pool chamber 201, so as to accommodate the expansion volume required by the oil, achieve pressure balance, and avoid The risk of disc locking is reduced, and the smooth braking effect of the hydraulic disc brake is maintained and optimized; and after the oil temperature drops, it automatically flows back to the oil cylinder chamber 101 with reduced pressure, and the piston body 301 is also gradually restored to the middle of the oil pool chamber 201 or close to the first end of the oil pool chamber 201 under the action of the external atmospheric pressure as the oil flows back. In this way, the space required for the expansion of the oil during braking is adaptively adjusted, and the oil pressure during braking is balanced, which effectively avoids the risk of disc locking and maintains and optimizes the smooth braking effect of the hydraulic disc brake.

[0060] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A hydraulic balance structure, comprising a brake handle seat, characterized in that: The brake handle seat is provided with: An oil cylinder chamber is provided in the brake handle seat and is filled with oil, a first end of the oil cylinder chamber is connected to an oil outlet, and a second end of the oil cylinder chamber is provided with an oil pressure driving member for driving the oil to be output to the oil outlet; An oil pool component, which is arranged on the brake handle seat and has an oil pool cavity, a first end of the oil pool cavity is connected with the oil cylinder cavity through a connecting hole, and a balancing module is arranged inside the oil pool cavity; Wherein, the balancing module adjusts the capacity of the oil pool cavity when the oil pressure driving component is active, so as to receive or release oil to balance the oil pressure in the oil cylinder cavity.

2. The oil pressure balancing structure according to claim 1, characterized in that: The balancing module includes: A piston body, which is assembled in the oil pool cavity and moves in the oil pool cavity along with the movement of the oil to adaptively adjust the capacity of the oil pool cavity; The oil pool cover is limitedly assembled at the second end of the oil pool cavity, and the oil pool cover is provided with an air pressure balance hole connected to the external atmospheric pressure.

3. The oil pressure balancing structure according to claim 2, characterized in that: A sealing ring is fixedly sleeved on the annular side wall of the piston body, and the annular outer wall of the sealing ring abuts against the inner wall of the oil pool cavity for sealing.

4. The oil pressure balancing structure according to claim 2, characterized in that: An annular step is provided on the inner wall of the second end of the oil pool cavity, and a cotter pin is provided on the side of the oil pool cover facing away from the oil pool cavity. The cotter pin is clamped at the opening of the second end of the oil pool cavity to cooperate with the annular step to locate the axial position of the oil pool cover.

5. The oil pressure balancing structure according to claim 1, characterized in that: The hydraulic drive comprises: A handle, which is rotatably mounted on the brake handle seat; A driving rod, a first end of which is movably connected to the handle and a second end of which extends into the oil cylinder cavity; A piston column, which is movably inserted in the oil cylinder cavity, and whose first end is movably connected to the second end of the driving rod, and whose annular side wall is fixedly sleeved with a piston ring; An elastic member is arranged in the oil cylinder cavity and is respectively connected to the second end of the piston rod and the inner wall of the first end of the oil cylinder cavity.

6. The oil pressure balancing structure according to claim 5, characterized in that: The hydraulic drive also includes: The oil cylinder cover is sleeved on the driving rod and clamped on the opening of the second end of the oil cylinder cavity to limit the axial movement position of the piston column in the oil cylinder cavity.

7. A hydraulic brake handle, characterized in that: It comprises the oil pressure balancing structure according to any one of claims 1 to 6, and further comprises: A clamp lock buckle, which is arranged on the brake handle seat to fix the hydraulic brake handle on the frame; An oil pipe, a first end of which is connected to the oil outlet, and a second end of which is connected to a brake pump mounted at the front / rear wheel of the bicycle frame; There are two brake lower pumps, which are respectively mounted on the front / rear wheels of the bicycle frame and arranged in conjunction with the disc, and the brake lower pumps are respectively connected to the second ends of the two oil pipes to apply oil pressure to the disc.

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