CN201128472Y - hydraulic brake handle - Google Patents

Abstract

The utility model relates to a hydraulic brake handle applied to a bicycle, which divides the handle body of the brake handle into a cavity seat positioned at the front section and a base positioned at the rear section, and keeps hydraulic oil in the cavity seat of the front section in a separation way by an elastic separator, so that the base at the rear section can not be directly contacted with the hydraulic oil under the action of high pressure, and meanwhile, a piston cylinder for mounting a piston group is sleeved inside the cavity seat, and larger pressure can be kept inside the piston cylinder; the utility model discloses utilize the structural configuration design of two segmentations, can keep apart or alleviate the effect of hydraulic oil to base and chamber seat, reduce the restriction of base and chamber seat on the machine-shaping condition effectively, reach reduction in production cost and save the efficiency of processing.

Description

hydraulic brake handle

technical field

The utility model relates to a hydraulic brake handle applied to riding vehicles such as bicycles, in particular to a hydraulic brake handle which uses an elastic partition to block and maintain hydraulic oil in the front part of the brake handle body.

Background technique

Since the hydraulic brake system has the functions of cushioning and high braking force, it can provide a safe and stable braking effect, so it is gradually used in relatively expensive bicycle products. General hydraulic brake system comprises: installation is combined with the brake handle of bicycle handlebar, the disc brake that is installed on the side of wheel, and the hydraulic pipeline that connects both, the structural design about existing hydraulic brake handle can be Refer to the "Suspended Bicycle Hydraulic Brake Structure" No. 431397 in Taiwan (TW) of China and the "Improved Structure of Oil Hydraulic Brake" in Taiwan (TW) Certificate No. M266236. .

Existing hydraulic brake handles generally form chambers and oil tanks directly on the handle body for accommodating components such as the piston group and hydraulic oil. Since the brake handle will generate considerable pressure on the hydraulic oil during the braking process, in order to To avoid problems such as structural damage to the handle body or hydraulic oil leakage, the existing handle body must be made by forging. Not only is the manufacturing cost quite high, but also the processing and molding is extremely labor-intensive and time-consuming, and it is difficult to meet the needs of bicycle manufacturers and consumers.

Utility model content

In order to solve the problems and limitations of the existing hydraulic brake handles, the hydraulic oil will directly cause great pressure on the handle body, the purpose of this utility model is to provide a kind of hydraulic oil blocking and maintaining on the brake handle body with elastic partitions The hydraulic brake handle in the front section mainly divides the brake handle body into a cavity seat located in the front section and a base located in the rear section, and an elastic partition is provided between the cavity seat and the base. The structural configuration design of the formula can prevent the base from directly contacting the hydraulic oil under high pressure.

Another object of the present utility model is to provide a hydraulic brake handle that can reduce the pressure on the cavity seat in the front section. A piston cylinder for the piston group is sleeved inside the cavity seat to keep the relatively high pressure at Within the range of the cylinder chamber of the piston cylinder, the hydraulic oil pressure on the cavity seat can be reduced.

The purpose of this utility model is achieved in this way, a hydraulic brake handle, the brake handle includes:

A base, the base is provided with an assembly groove at the rear part, and a cavity groove is hollowed out from the front end surface, and a rod hole communicating with the assembly groove is formed through the inner end surface of the cavity groove;

An operating handle, combined with the assembly groove in a swingable form, forms a pressing part at a position corresponding to the rod hole;

A cavity seat is fixed on the front end of the base and forms a cavity inside, and an elastic partition is interposed between the rear end of the cavity seat and the front end of the base to close the rear end of the cavity. The divider is provided with a pair of cavity holes that are aligned with the cavity groove, and a set of holes are formed through the front end of the cavity seat;

A piston cylinder is penetrated and fixed in the chamber and the cavity groove and forms a cylinder chamber through to the rear end inside, and a guide hole connecting the cylinder chamber and the chamber is formed in the middle of the cylinder wall, the piston The front end of the cylinder is protruded with a cylinder head that fits closely and passes through the sleeve hole, and a flow channel that communicates with the cylinder chamber is penetrated through the cylinder head;

A piston group, including a piston part that can be slidably arranged in the cylinder chamber in a movable form, a push rod arranged between the rear end of the piston part and the pressing part of the operating handle, and a push rod arranged on the piston part A return spring between the front end and the inner end surface of the aforementioned cylinder;

A plug head is combined with the cylinder head of the piston cylinder and is located at the front end of the cavity seat.

The front end of the base is hollowed out to form a capsule, and the elastic partition is integrally connected with a capsule embedded in the capsule.

There is a gap between the capsule body and the capsule chamber.

The elastic partition forms a ring of sealing edges around the periphery.

The base is provided with an embedding portion at the front end, and the cavity base is provided with an embedding portion which is nested and combined with the embedding portion at the rear end.

The operating handle is combined with a pivotable pressing wheel at a position corresponding to the rod hole and a screw hole is penetrated, and the push rod is threaded and combined with the screw hole by a threaded section at the rear end.

The end of the piston cylinder facing the base is provided with a threaded section, and an inner screw surface is formed on the inner wall of the cavity groove to be screwed with the threaded section; the plug head A positioning screw screwed to the cylinder head is arranged at the rear end.

Said piston cylinder is protrudingly provided with a clamping edge clamping said elastic spacer on the outer cylinder surface, and a lining ring is set between the clamping edge and the elastic spacer.

The piston part is provided with a ring groove on the outer peripheral surface of the rear end, and a sealing ring is sleeved in the ring groove; An oil blocking ring is sleeved between the end sleeve and the front end of the piston member.

The base of the cavity is provided with an oil adjustment hole, and a screw plug is provided in conjunction with the oil adjustment hole.

The advantages and effects that can be obtained by the hydraulic brake handle provided by the utility model include at least:

1. In the utility model, the brake handle is divided into a chamber seat and a base, and an elastic partition is provided between the chamber seat and the base. Through the barrier effect of the elastic partition, the base will not directly touch the The hydraulic oil subjected to high pressure enables the base to be processed by simple, fast and cheap processing methods such as die-casting, so as to reduce production costs and save processing efficiency.

2. The utility model uses the piston cylinder to divide the inner area of the cavity seat into a cylinder chamber with a higher pressure and a chamber with a lower pressure, which effectively reduces the processing and molding conditions of the external cavity seat. For example, the inner wall of the chamber is coated with paint or impregnated to meet the requirement of no leakage, which effectively simplifies processing and reduces costs.

3. The utility model is equipped with a capsule on the elastic partition, which can be directly used for oil storage, which not only effectively simplifies the structure of the oil cup or oil storage tank of the existing hydraulic brake handle, but also allows the hydraulic brake handle to be installed in the When the bicycle handlebar is used, it can achieve the efficiency of left and right sharing.

Description of drawings

Fig. 1: The three-dimensional appearance diagram of the preferred embodiment of the utility model.

Figure 2: An exploded view of the components of the preferred embodiment of the utility model.

Fig. 3: A combined sectional view of a preferred embodiment of the utility model.

Fig. 4: A partially enlarged composite cross-sectional view of a preferred embodiment of the present invention.

Fig. 5: A schematic diagram of the action when braking in a preferred embodiment of the utility model.

Figure number:

10 Base 11 Combining parts

12 Assembly slot 13 Pivot hole

14 Embedding part 141 Abutment surface

142 Resisting Edge 15 Cavity Groove

151 internal thread 16 rod holes

17 chambers

20 Operating handle 21 Pivot

22 Pressing part 23 Handle rod

24 pressure rollers 25 bushings

30-chamber 31-chamber

32 Embedding part 33 Elastic partition

331 sealing edge 332 cavities

333 capsules 34 sets of holes

35 oil adjustment hole 36 screw plug

40 piston cylinder 41 cylinder chamber

42 cylinder head 421 runner

43 Screwed section 44 Clamping edge

45 bushing ring 46 guide hole

47 leading hole 48 clamping edge

49 sealing ring

50 piston group 51 piston parts

511 ring groove 512 sealing ring

513 shaft 514 end sleeve

515 oil resistance ring 2 push rods

53 return spring

60 plug head 61 positioning screw

70 hydraulic conduit

Detailed ways

In order to understand the technical features and practical effects of the present utility model in detail, and to implement it according to the contents of the specification, the preferred embodiment shown in the accompanying drawings will be described in detail as follows:

The preferred embodiment of the hydraulic brake handle provided by the utility model is shown in Fig. 1 to Fig. 3. The brake handle includes a base 10, an operating handle 20 combined with the base 10, a handle fixedly combined with the base 10 cavity seat 30 at the front end, a piston cylinder 40 combined in the cavity seat 30, a piston group 50 installed in the piston cylinder 40, and a plug 60 and a hydraulic cylinder combined in the cavity seat 30 front end Catheter 70, etc.; wherein:

As shown in Fig. 2 and Fig. 3, the base 10 is a one-piece structure made by die-casting and other processing methods, and the base 10 is provided with a joint 11 which can be used for combining the handlebar of a bicycle on one side, and The rear part is hollowed out and provided with an assembly groove 12 for the installation of the operating handle 20, and a pivot hole 13 is formed in the middle position relative to the assembly groove 12; the front end of the base 10 forms a cavity seat 30 The embedding part 14 forms an abutment surface 141 on the end surface of the embedding part 14, and forms a stepped surface-shaped abutting edge 142 on the rear edge of the embedding part 14; the base 10 is formed by the front end surface (i.e. the abutment surface) is hollowed out at intervals and is provided with a cylindrical cavity 15 and a rectangular capsule chamber 17. The cavity 15 forms an internal screw surface 151 with an internal thread on the inner wall surface, and in A rod hole 16 communicating with the assembly groove 12 is formed through the axial center of the inner end surface of the cavity 15 ;

As shown in Fig. 2 and Fig. 3, the operating handle 20 is combined with the base 10 in a swingable form by using a pivot 21 that can pass through the aforementioned pivot hole 13, and the operating handle 20 is provided with a The pressing part 22 in the range of 12, and a handle rod 23 protruding obliquely from the base 10, and a pivotable screw hole through which a screw hole is formed is combined at the position of the pressing part 22 relative to the aforementioned rod hole 16. A pressure roller 24, and in order to strengthen the flexibility of the pressure roller 24, a bushing 25 is sleeved between the pressure roller 24 and the pressing part 22;

As shown in Figures 2 to 4, the cavity seat 30 is a one-piece structure made by forging and other processing methods, and a hollow cavity 31 is formed inside it, and cooperates with the embedding part 14 of the base 10, the cavity The seat 30 forms an embedding part 32 at the rear end that can be nested in the front end of the base 10, and a contact surface 141 between the rear end of the cavity seat 30 and the abutment surface 141 at the front end of the base 10 is sandwiched to allow the cavity 31. The elastic partition 33 with a closed rear end; the cavity seat 30 is provided with a set of holes 34 at the front end, and at an appropriate position of the cavity seat 30, an oil adjustment hole 35 in the form of a screw hole is penetrated, and a screw hole is provided. The plug 36 closes the oil adjusting hole 35;

The aforementioned elastic spacer 33 is made of flexible material such as rubber or silica gel, and forms a sealing edge 331 on its periphery that can be sealed and clamped between the cavity seat 30 and the base 10 . And corresponding to the cavity 15 and the capsule chamber 17 of the base 10, a pair of cavity holes 332 which are aligned with the cavity 15 are penetrated in the elastic partition 33, and an integrally connected cavity 332 which can be embedded in the capsule chamber 17 is provided. The capsule body 333 communicates with the aforementioned chamber 31, and an appropriate gap is reserved between the capsule body 333 and the capsule chamber 17 to provide sufficient elastic deformation margin for the capsule body 333 as a hydraulic pressure The oil tank of the type brake handle;

As shown in Figures 2 to 4, the piston cylinder 40 is a cylindrical cylinder structure located in the aforementioned chamber 31, forming a hollow cylindrical cylinder chamber 41 through to the rear end, and protruding from its front end. Closely fit the cylinder head 42 installed in the sleeve hole 34, the outer peripheral surface of the cylinder head 42 is provided with external threads, and a flow channel 421 communicating with the cylinder chamber 41 is formed through the axial center of the cylinder head 42; The end of the piston cylinder 40 towards the base 10 is provided with a threaded section 43 with an external thread surface, and the threaded section 43 passes through the cavity 332 of the elastic partition 33 and is threaded in the threaded joint. The cavity 15 of the base 10, and a clamping edge 44 for clamping the elastic partition 33 is protruded at a corresponding position on the outer cylinder surface of the piston cylinder 40, and in order to strengthen the clamping tightness and prevent the piston cylinder 40 from The elastic spacer 33 is damaged during the screw locking process, and a sealing ring 45 is further arranged between the clamping edge 44 and the elastic spacer 33;

The aforementioned piston cylinder 40 corresponds to the position of the piston group 50 in the middle section of the cylinder wall, and is provided with a guide hole 46 and a guide hole 47 at intervals to communicate with the cylinder chamber 41 and the chamber 31. The piston cylinder 40 is located outside the front end. The cylinder surface is protruded with a clamping edge 48 for abutting against the front edge of the chamber 31, and in order to strengthen the clamping tightness of the clamping edge 44, between the clamping edge 48 and the front edge of the chamber 31 Lining a seal ring 49 that can form a seal;

As shown in Figures 2 to 4, the piston assembly 50 includes a piston member 51, a push rod 52 that can drive the piston member 51, and a reset mechanism located between the piston member 51 and the inner end surface of the aforementioned cylinder chamber 41. Spring 53; wherein, the outer diameter of the piston member 51 is slightly smaller than the inner diameter of the cylinder chamber 41, and the aforementioned guide hole 47 is aligned with the piston member 51, so that hydraulic oil can be filled in the piston member 51 and the cylinder chamber 41 inner walls, so that the sliding control of the piston member 51 is smoother; the outer peripheral surface of the rear end of the piston member 51 is concavely provided with a ring groove 511, and a sealing clamp is set in the ring groove 511 and placed on the piston member 51 and the sealing ring 512 between the cylinder chamber 41 inner wall;

The aforesaid piston member 51 is provided with a shaft 513 at the axial center position of the front end, and an end sleeve 514 for abutting against the return spring 53 is sleeved at the front end of the shaft rod 513 , and the end sleeve 514 and the piston member 51 A V-shaped oil blocking ring 515 is sleeved between the front ends; the push rod 52 leans against the rear end of the piston member 51 with the front end, and its shaft passes through the rod hole 16 of the base 10, and then The threaded section screw lock at the end is combined with the screw hole provided by the aforementioned pressure wheel 24, so that the operating handle 20 can use the pressure wheel 24 to drive and control the piston group 50;

As shown in Figure 2 and Figure 3, the plug head 60 is fixedly combined with the front end of the cavity seat 30 and the piston cylinder 40, and a positioning screw 61 arranged at the rear end is aligned and screwed to the piston cylinder 40 to pass through. The cylinder head 42 of the cavity seat 30 is tightened by the screw lock of the positioning screw 61, so that the cavity seat 30 is firmly combined with the front end of the base 10, and at the same time, it can give way to the flow channel at the front end of the piston cylinder 40. 421 communicates with a hydraulic conduit 70 coupled to the front end of the plug 60, so that the brake handle can drive and control the disc brake of the hydraulic brake system through the hydraulic conduit 70;

In this way, as shown in Figures 1 and 3, the aforementioned components are used to form a new type of hydraulic brake handle that uses the elastic separator 33 to block and maintain the hydraulic oil in the cavity seat 30 provided at the front section of the brake handle.

Please refer to Fig. 3 and Fig. 5, when the utility model is installed and used, the hydraulic oil is filled in the space connected between the chamber 31 of the cavity seat 30 and the cylinder chamber 41 of the piston cylinder 40, and cooperates with the elastic partition Part 33 uses the oil storage function produced by the bladder 333. When the user presses the handle 23 of the operating handle 20, the operating handle 20 can pass the pressure wheel 24 and use the push rod 52 to push the piston member 51 toward the The front end moves, and squeezes the hydraulic oil to pass through the hydraulic conduit 70 to drive the disc brake of the hydraulic brake system to generate a braking action; when the user releases the operating handle 20, the disc brake and the piston group 50 are reset The spring 53 can make each component of the brake handle return to the initial position when the brake is not applied.

As shown in Figure 3 and Figure 4, the utility model utilizes the barrier effect of the elastic partition 33 to prevent the base 10 from directly contacting the hydraulic oil subjected to high pressure, so that it can be easily, quickly and cheaply used in die-casting. The base 10 is formed by processing, and the design of the piston cylinder 40 is used to form a cylinder chamber 41 with a higher pressure and a chamber 31 with a lower pressure, so that the processing and molding conditions of the cavity seat 30 are further improved. Restrictions are reduced, effectively reducing production costs and saving processing.

Although the utility model has been disclosed with specific embodiments, it is not intended to limit the utility model. Any person skilled in the art can replace equivalent components without departing from the concept and scope of the utility model, or The equivalent changes and modifications made according to the scope of protection of the utility model patent should still fall within the scope of this patent.

Claims (10)

1. fluid pressure type brake crank is characterized in that this brake crank comprises:

One pedestal, this pedestal is provided with an assembling grove in the back segment position, and is hollowed out by front end face and to be concaved with a chamber groove, provides a bar hole that is communicated with this assembling grove in the inner end surface of this chamber groove;

One lever is incorporated into this assembling grove can swing form, presses portion in position that should the bar hole is formed one;

One chamber seat, be consolidated in the front end and the inner chamber that forms of this pedestal, this chamber seat inserts and puts between rear end and this pedestal front end and is provided with an elasticity separator with this chamber back-end closure, and this elasticity separator is provided with a lumen pore that aligns this chamber groove, and this chamber seat provides a trepanning in front end;

One piston cylinder, wear and be fixed in this chamber and this chamber groove and the inner cylinder chamber that always passes to the rear end that forms, and provide a guide hole that is communicated with this cylinder chamber and this chamber in the middle section position of casing wall, this piston cylinder is convexly equipped with the cylinder head that a driving fit passes this trepanning in front end, provides the runner of this cylinder chamber of connection in this cylinder head;

One piston set comprises that one is located at this piston piece rear end and the set push rod that presses between the portion of this lever with the piston piece, that can mobile form be slidedly arranged on this cylinder chamber, and a retracing spring of being located between this piston piece front end and the indoor end face of aforementioned this cylinder;

One chock plug is incorporated into this cylinder head of this piston cylinder and is positioned at the front end of this chamber seat.

2. fluid pressure type brake crank as claimed in claim 1 is characterized in that: described pedestal front end face hollows out and is concaved with a capsule chamber, and described elasticity separator one links and is provided with a utricule that is embedded at this capsule chamber.

3. fluid pressure type brake crank as claimed in claim 2 is characterized in that: be provided with a gap between described utricule and the described capsule chamber.

4. fluid pressure type brake crank as claimed in claim 3 is characterized in that: described elasticity separator forms a circle in periphery and seals the edge of pulling.

5. fluid pressure type brake crank as claimed in claim 4 is characterized in that: described pedestal is provided with an interlocking portion in front end, and described chamber seat is provided with a nested relatively interlocking portion in conjunction with this interlocking portion in the rear end.

6. fluid pressure type brake crank as claimed in claim 5 is characterized in that: in conjunction with being provided with a pinch roller that can pivot and provide a screw, worn by rear end one thread segment spiral shell and be incorporated into this screw by described push rod in the position in the described bar of correspondence hole for described lever.

7. as each described fluid pressure type brake crank of claim 1 to 6, it is characterized in that: described piston cylinder is made as the section of being spirally connected in the end towards described pedestal, and forms an interior spiral surface that is screwed with this section of being spirally connected in the internal face of described chamber groove; Described chock plug is provided with a location spiral shell spare that is screwed together in described cylinder head in the rear end.

8. fluid pressure type brake crank as claimed in claim 7 is characterized in that: described piston cylinder convexes with a clipping edge that inserts and puts described elasticity separator in the outer shell face, establishes a grommet between this clipping edge and this elasticity separator.

9. fluid pressure type brake crank as claimed in claim 8 is characterized in that: the outer peripheral face of described piston piece in the rear end is concaved with a circle annular groove, in the sheathed seal ring of this annular groove; This piston piece is stretched in front end and is established an axostylus axostyle, in the sheathed end cover of the front end of this axostylus axostyle, and a sheathed oil blocking ring between this end cover and this piston piece front end.

10. fluid pressure type brake crank as claimed in claim 9 is characterized in that: described chamber seat has provided one and has transferred oilhole, is provided with a plug screw in this accent oilhole combination.

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