TWI675970B - Brake caliper device - Google Patents

Abstract

The invention relates to a brake caliper device, which includes a cylinder body, a piston, a fixing frame and two swash plates. The cylinder body has a main pin hole and a secondary pin hole, and a sleeve is installed in the secondary pin hole, and a slip ester is provided in the cylinder for lubrication. The fixing frame includes a frame body, a main pin inserted in the main pin hole and a secondary pin inserted in the bushing, wherein an accommodation space in the bushing can be divided into a bottom space, a sliding place and a Snake set of space. Among them, the minimum inner diameter of the sliding place must be smaller than the maximum outer diameter of the auxiliary pin at the sliding place, so that the bushing can bear the pressure fit of the auxiliary pin. Therefore, the present invention can effectively improve the vibration interference of the engine when the brake caliper is actuated, and avoid the violent shaking of the cylinder of the brake caliper on the fixed frame, thereby reducing the knocking sound between the plate and the latch and the fixed frame.

Description

Brake caliper device

The present invention relates to a brake caliper device, and more particularly to a brake caliper device suitable for a vehicle having a rocker-type engine.

Please refer to Figure 1 for the basic configuration diagram of a conventional locomotive. A locomotive is shown in the figure. The locomotive has a frame 2 as a main structure, and the main structure part is covered by a body shape 1. A steering handle 21 is pivotally connected to the frame 2 and can be controlled by a rider. Direction of locomotive. The front shock absorber 6 is connected to the steering handle 21, and the front wheel set 3 is pivotally connected to the front shock absorber 6. The front wheel set 3 includes a front rim 31, a front tire 32, and a front brake disc 33. The front tire 32 is assembled on the front wheel. At the circumference of the rim 31, the front brake disc 33 is locked to the front rim 31. Among them, as shown in the picture of the speed keda locomotive, a rocker arm 5 is pivotally connected to the frame 2, and the rocker arm 5 is an engine, which constitutes a group of vehicles equipped with a rocker-type engine. A rear shock absorber 7 is installed between the rocker arm 5 and the frame 2. The rear wheel set 4 is pivotally connected to the rocker arm 5. The rear wheel set 4 includes a rear rim 41, a rear tire 42, and a rear brake disc 43. The rear tire 42 is assembled on the circumference of the rear rim 41, and the rear brake disc 43 is locked on the rear rim 41.

The steering handle 21 is provided with a brake master cylinder 81, which is connected to a front brake caliper device 87 mounted on the front shock absorber 6 through a front brake oil pipe 86; the brake master cylinder 81 is further connected to the brake cylinder through a brake oil pipe (not shown). After being mounted on the rocker arm 5, the brake caliper device 93 is connected.

Please refer to FIG. 2 to FIG. 4, which are a front view of a conventional rear brake caliper device, a cross-sectional view of a top view, and a cross-sectional view of a portion A-A of FIG. 2, respectively. The figure shows a brake caliper device. The brake caliper device 93 is used as an example in the future, but it is not limited to this. The structure can also be applied to the front brake caliper device after the structure is adjusted. The rear brake caliper device 93 includes a cylinder block 932, a piston 935, a fixing frame 931, and a two-row paddle 933. The cylinder body 932 has a main pin hole 9321 and a sub pin hole 9322. The main pin hole 9321 is provided with a sliding ester. The sub pin hole 9322 is provided with a bushing 934. The bushing 934 is provided with a port. 9344's long-hole elastic material, such as rubber, also contains slip ester for lubrication. The piston 935 is accommodated in the cylinder block 932, and it provides displacement and force when the oil pressure changes. The fixing frame 931 includes a frame body 9310, a main pin 9311 inserted in the main pin hole 9321, and a sub-pin 9312 inserted in the bushing 934. Among them, a port between the main pin 9311 and the fixing frame 931 is provided. There is a dust cover 937 to prevent dust and water from entering the main pin hole 9321 and affecting the operation of the main pin 9311 in the environment. The second piece 933 is provided on the cylinder 932 via a latch 936.

Please refer to FIG. 5 together, which is a sectional view taken along the line B-B in FIG. 4. When the auxiliary pin 9312 is inserted into the bushing 934, one of the accommodation spaces 9340 in the bushing 934 can be divided into a bottom space 9341, a sliding place 9342, and a snake sleeve space 9343 by the aforementioned auxiliary pin 9312. The inner space of the bushing 934 is covered with slip ester. When the piston 935 is actuated to cause the disc 933 to clamp the rear brake disc 43, the cylinder 932 and the fixed frame 931 will be relatively displaced, that is, the sub-pin 9312 and the bushing. 934 will undergo relative movement. At this time, the volume of the bottom space 9341 in the bushing 934 will be changed. The sliding ester will use the minimum inner diameter D of the bushing 934 at the sliding place 9342 and the maximum outer diameter d of the auxiliary pin 9312 at the sliding place. The gap is balanced with the flow of the snake sleeve space 9343. In other words, the minimum inner diameter D of the bushing 934 at the sliding position will be greater than the maximum outer diameter d of the auxiliary pin 9312 at the sliding position of the bushing. The gap between the two will be the sliding ester. The passage between the bottom space 9341 and the snake sleeve space 9343.

However, since the conventional rear brake caliper device is a type of vehicle used for a rocker-type engine, when the rear brake caliper device 93 is provided on the rocker arm 5 (engine) as shown in FIG. 1, the operation of the rear brake caliper device 93 will Obviously disturbed by engine vibration. At this time, when the vibration of the cylinder block 932 is greater, it will cause the cylinder block 932 to shake violently on the fixed frame 931, causing a knocking sound between the blade 933 and the bolt 936 and the fixed frame 931. .

Because of this, the inventor is based on the spirit of active invention and urgently thinks about a brake caliper device that can solve the above problems. After several research experiments, the invention has been completed.

The main purpose of the present invention is to provide a brake caliper device, which can effectively improve the vibration interference of the engine when the brake caliper is actuated by changing the matching relationship between the auxiliary pin and the bush, and avoid the violent vibration of the cylinder of the brake caliper on the fixed frame. Shake, thus reducing the percussion between the film and the latch and the holder.

In order to achieve the above object, the brake caliper device of the present invention is disposed on a locomotive and includes a cylinder block, a piston, a fixed frame, and two reeds. The cylinder body has a main pin hole and a pair of pin holes. The main pin hole is provided with a sliding ester, and the auxiliary pin hole is provided with a bushing. The bushing is provided with a sliding ester. The piston is accommodated in the cylinder and provides displacement force by the change of oil pressure. The fixing frame includes a frame body, a main pin inserted in the main pin hole and a secondary pin inserted in the bushing, wherein an accommodation space in the bushing is divided into a bottom space by the auxiliary pin, a Sliding place and a snake sleeve space. Secondly, the pad is set on the cylinder block or fixed frame, and is clamped by a piston to hold a brake disc; the minimum inner diameter of the sliding place must be smaller than the maximum outer diameter of the auxiliary pin at the sliding place, so that the bushing can withstand the auxiliary The pin is press fit and there is no extra clearance at the sliding place.

With the above design, when a certain amount of compression occurs between the bushing and the auxiliary pin, the cylinder can withstand a more stable support to resist the interference of vibration, and at the same time, the relative displacement between the cylinder and the fixed frame will be reduced, effectively avoiding A percussion sound is generated between the plate and the latch and the holder.

The surface of the auxiliary pin may be provided with at least one auxiliary pin groove portion, so that the sliding ester can be circulated between the bottom space and the snake sleeve space. Therefore, even if the present invention combines the sleeve and the auxiliary pin in a press fit manner, when the cylinder body and the fixed frame move relatively, the slippery ester in the bottom space and the snake sleeve space can still be maintained through the auxiliary pin groove portion. Circulation, keeping the internal pressure in balance.

The auxiliary pin may be provided with at least one channel, so that the sliding ester can be circulated between the bottom space and the snake sleeve space. Therefore, even if the present invention combines the sleeve and the auxiliary pin in a press fit manner, when the cylinder body and the fixed frame move relatively, the circulation of the slip ester in the bottom space and the snake sleeve space can be maintained through the at least one channel. To maintain the balance of internal pressure.

The inner diameter of the bushing can be dug with at least one bushing groove portion, so that the sliding ester can circulate between the bottom space and the snake sleeve space. Therefore, even if the present invention combines the sleeve and the auxiliary pin in a press fit manner, when the cylinder body and the fixed frame move relatively, the slippery ester in the bottom space and the snake sleeve space can still be maintained through the sleeve groove portion. Circulation, keeping the internal pressure in balance.

A dust cover may be provided between the port of the above-mentioned king pin and the fixing frame to prevent dust and water from entering the hole of the king pin and affecting the action of the king pin in the environment.

The above summary and the following detailed description are exemplary in order to further illustrate the scope of patent application of the present invention. Other objects and advantages of the present invention will be described in the following description and drawings.

Please refer to FIGS. 6 to 8, which are respectively a front view of the brake caliper device after the first embodiment of the present invention, a sectional view of a top view, and a sectional view of a portion A-A of FIG. 6. The figure shows a brake caliper device. In this embodiment, the rear brake caliper device 83 is used as an example, but it is not limited to this. The structure can also be applied to the front brake caliper device after the structure is adjusted. The rear brake caliper device 83 is mounted on a rocker arm in the present invention, and in this embodiment, the rocker arm is an engine, and the rocking engine can be referred to FIG. 1 of the conventional technology. After the present invention, the brake caliper device 83 includes a cylinder 832, a piston 835, a fixing frame 831, and two swash plates 833.

The cylinder block 832 has a main pin hole 8321 and a sub pin hole 8322. The main pin hole 8321 is provided with a sliding ester. The sub pin hole 8322 is provided with a bushing 834. The bushing 834 is provided with a port. 8344's long-hole elastic material, such as rubber, also contains slip ester for lubrication. The piston 835 is accommodated in the cylinder block 832, and is provided with displacement force by a change in oil pressure. The fixing frame 831 includes a frame body 8310, a main pin 8311 inserted in the main pin hole 8321, and a sub pin 8312 inserted in the bushing 834. Among them, a port between the main pin 8311 and the fixing frame 831 is provided. A dust cover 837 is provided to prevent dust and water from entering the main pin hole 8321 and affecting the operation of the main pin 8311. In the embodiment, the second piece 833 is provided on the cylinder block 832 via a latch 836, but is not limited to this. It can also be provided on the fixed frame 831, which will be pushed by the piston 835 to clamp a rear brake.盘 盘 43. The disc 43.

In addition, please refer to FIG. 9 together, which is a cross-sectional view of part C-C of FIG. 8 according to the first embodiment of the present invention. When the auxiliary pin 8312 is inserted into the bushing 834, one of the accommodating spaces 8340 in the bushing 834 can be divided into a bottom space 8341, a sliding place 8342, and a snake sleeve space 8343 by the aforementioned auxiliary pin 8312. In this embodiment, the present invention is characterized in that the minimum inner diameter D of the sliding place 8342 must be smaller than the maximum outer diameter d of the auxiliary pin 8312 at the sliding place 8342, that is, when the auxiliary pin 8312 is inserted into the bushing 834, the liner The long hole of the sleeve 834 generates a certain amount of compression, so that the cylinder block 832 can be more stably supported to resist vibration. However, this will prevent the sliding ester in the bushing 834 from flowing between the bottom space 8341 and the snake sleeve space 8343 when the cylinder 832 and the fixed frame 831 are relatively moved. Therefore, as shown in FIG. 9, the surface of the auxiliary pin 8312 is provided with three auxiliary pin groove portions 83121 to allow the sliding ester to circulate between the bottom space 8341 and the snake sleeve space 8343. With this, even if the present invention combines the bushing 834 and the auxiliary pin 8312 in a press fit manner, when the cylinder 832 and the fixed frame 831 are relatively moved, the bottom space 8341 and the snake can be maintained through the auxiliary pin groove portion 83121. The circulation of the slip ester in the sleeve space 8343 maintains the internal pressure balance.

Next, please refer to FIG. 10 and FIG. 11, which are a cross-sectional view of a portion A-A of FIG. 6 and a cross-sectional view of a portion D-D of FIG. 10, respectively, according to the second embodiment of the present invention. As shown in the figure, in the present embodiment, the first pin 8312 is provided in the auxiliary pin 8312, so that the sliding ester can circulate between the bottom space 8341 and the snake sleeve space 8343. Therefore, even if the present invention combines the bushing 834 and the auxiliary pin 8312 in a press fit manner, when the cylinder 832 and the fixed frame 831 are relatively moved, the bottom space 8341 and the snake sleeve space can still be maintained through the flow channel 83122. The flowability of 8343 inner slip ester keeps the internal pressure in balance.

Next, please refer to FIG. 12 and FIG. 13, which are respectively a cross-sectional view taken along the line A-A and a cross-sectional view taken along the line E-E of FIG. 12 according to the third embodiment of the present invention. As shown in the figure, in this embodiment, the inner diameter of the bushing 834 is provided with seven bushing groove portions 8345, so that the sliding ester can be circulated between the bottom space 8341 and the snake sleeve space 8343. With this, even if the present invention combines the bushing 834 and the auxiliary pin 8312 in a press fit manner, when the cylinder 832 and the fixed frame 831 are relatively moved, the bottom space 8341 and the snake sleeve can be maintained through the bushing groove portion 8345. The circulation of slip ester in the space 8343 keeps the internal pressure in balance.

Finally, please refer to FIG. 14, which is a measurement diagram of the matching dimensions of the auxiliary pin and the bushing of the rear brake caliper device according to the present invention compared with the engine vibration measurement. In this embodiment, the rear brake caliper device 83 is disposed on a rocker arm, and the rocker arm of the present invention is an engine. Therefore, the operation of the rear brake caliper device 83 will be disturbed by engine vibration. As shown in FIG. 14, the abscissa is the engine speed (rpm), and the ordinate represents the change in vibration acceleration (m / s ² ) of the rear brake caliper device 83 when it is disturbed by engine vibration. Among them, the curve A and Curve B indicates that the cylinder block 932 of the rear brake caliper device 93 has different (minimum inner diameter D of the bushing at the sliding place)-(maximum outer diameter d of the auxiliary pin at the sliding place) of the different engines. The vibration acceleration change curve drawn by the speed, and the curve C and curve D respectively indicate that the cylinder 832 of the brake caliper device 83 after the present invention is different (the minimum inner diameter D of the bushing at the sliding position)-(the auxiliary pin is at the sliding position) Under the relationship of the maximum outer diameter d), the vibration acceleration change curves plotted at different engine speeds, and curve E is directly measured by the engine when the vibration acceleration change curves are plotted at different engine speeds.

Among them, as shown by curve A and curve B, when the difference between Dd is 0.2mm or 0.1mm, it means that there is a gap between the bush 934 of the rear brake caliper device 93 and the auxiliary pin 9312, so that the sliding ester can pass directly The gap of the sliding place 9342 flows between the bottom space 9341 and the snake sleeve space 9343. However, as the engine speed increases, the larger the vibration amplitude of the cylinder block 932 will cause the cylinder block 932 to shake violently on the fixed frame 931, thereby causing a knock between the blade 933 and the bolt 936 and the fixed frame 931. Sound problem.

In contrast, as shown by curve C and curve D, when the difference between Dd is -0.1mm or -0.2mm, it means that the auxiliary pin 8312 must have a certain pressure on the long hole of the bushing 834 when it is inserted into the bushing 834. This allows the cylinder 832 to be more stably supported to resist vibration. Therefore, as the engine speed increases, the vibration amplitude of the cylinder block 832 can be kept within a certain range with the vibration amplitude of the engine itself, without excessive shaking and vibration, so the cylinder block 832 can maintain a slight vibration on the fixed frame 831. , Thereby avoiding the problem of a percussion sound generated between the piece 833 and the latch 836 and the fixing frame 831.

The above embodiments are merely examples for the convenience of description. The scope of the claimed rights of the present invention should be based on the scope of the patent application, rather than being limited to the above embodiments.

1‧‧‧ body shape

2‧‧‧frame

21‧‧‧steering handle

3‧‧‧ front wheel set

31‧‧‧ front wheel

32‧‧‧ front tire

33‧‧‧Front brake disc

4‧‧‧ rear wheel set

41‧‧‧ rear wheel

42‧‧‧ rear tire

43‧‧‧Rear brake disc

5‧‧‧ rocker

6‧‧‧ front shock absorber

7‧‧‧ rear shock

81‧‧‧brake master cylinder

83,93‧‧‧ rear brake caliper device

831,931‧‧‧Fixed

8310,9310‧‧‧frame

8311,93111

8312,9312‧‧‧

83121‧‧‧ Deputy pin groove

83122‧‧‧ runner

832,932‧‧‧cylinder

8321,9321‧‧‧Master pin hole

8322,9322 ‧‧‧ secondary pin hole

833,933

834,934‧‧‧ Bush

8340,9340‧‧‧accommodation space

8341,9341 ‧‧‧ bottom space

8342,9342 ‧‧‧ sliding place

8343,9343 ‧ ‧ ‧ snake set space

8344,9344‧‧‧Port

8345‧‧‧ Bushing groove

835,935‧‧‧Piston

836,936‧‧‧bolt

837,937‧‧‧Dust cover

86‧‧‧Front brake hose

87‧‧‧Front brake caliper device

D‧‧‧minimum inner diameter

d‧‧‧maximum outer diameter

Figure 1 is a basic configuration diagram of a conventional locomotive. Figure 2 is a front view of a conventional rear brake caliper device. FIG. 3 is a partial cross-sectional view of a conventional rear brake caliper device. Fig. 4 is a cross-sectional view taken along the line A-A of Fig. 2. Fig. 5 is a sectional view taken along the line B-B in Fig. 4. 6 is a front view of the brake caliper device after the first embodiment of the present invention. 7 is a sectional view of a top view of a brake caliper device after the first embodiment of the present invention. Fig. 8 is a sectional view taken along the line A-A of Fig. 6 according to the first embodiment of the present invention. Fig. 9 is a sectional view taken along the line C-C of Fig. 8 according to the first embodiment of the present invention. Fig. 10 is a sectional view of part A-A of Fig. 6 according to a second embodiment of the present invention. Fig. 11 is a sectional view taken along the line D-D of Fig. 10 according to the second embodiment of the present invention. Fig. 12 is a cross-sectional view of part A-A of Fig. 6 according to a third embodiment of the present invention. Fig. 13 is a sectional view taken along the line E-E of Fig. 12 according to a third embodiment of the present invention. FIG. 14 is a measurement diagram of the matching dimensions of the auxiliary pin and the bushing of the rear brake caliper device according to the present invention in comparison with the engine vibration.

Claims (5)

A brake caliper device is provided on a locomotive and includes: a cylinder block having a main pin hole and a secondary pin hole, wherein the main pin hole is provided with a slip ester, and the secondary pin hole is provided with a bushing The content of the bush is provided with sliding ester; a piston is accommodated in the cylinder body and provides displacement force when the oil pressure changes; a fixed frame includes a frame body and a main pin inserted in the main pin hole And a secondary pin inserted in the bushing, wherein an accommodating space in the bush is divided into a bottom space, a sliding place and a snake sleeve space by the auxiliary pin; and It is arranged on the cylinder body or the fixed frame, and clamps a brake disc by the push of the piston; wherein the minimum inner diameter of the sliding place must be smaller than the maximum outer diameter of the auxiliary pin on the sliding place, so that the liner The sleeve withstands the compression fit of the auxiliary pin, so that there is no extra clearance at the sliding place. For example, the brake caliper device of the scope of patent application, wherein the surface of the auxiliary pin is provided with at least one auxiliary pin groove portion, so that sliding ester can be circulated between the bottom space and the snake sleeve space. For example, the brake caliper device of the scope of application for the patent, wherein the auxiliary pin is provided with at least a first-grade channel, so that the sliding ester can be circulated between the bottom space and the snake sleeve space. For example, the brake caliper device of the scope of patent application, wherein the inner diameter of the bushing is provided with at least one bushing groove portion, so that the sliding ester can circulate between the bottom space and the snake bushing space. For example, the brake caliper device of the scope of patent application, wherein a dust cover is provided between the port of the main pin and the fixing frame, so as to prevent dust and water from entering the hole of the main pin and affecting the operation of the main pin.