TWI604987B - Brake structure improvement - Google Patents

Description

Brake structure improvement

The invention relates to a brake structure for a vehicle, in particular to a brake structure improvement which can automatically increase the clamping force and improve the overall swaying effect.

The new patent case of the "Bicycle Brake" of the Republic of China Patent Bulletin No. M314159 discloses a double-point pivoting brake applied to a bicycle, which is provided with a pair of swinging arms, which are respectively pivotally coupled by a coupling assembly. The frame pin on both sides of the bicycle wheel is provided with a brake block on each of the lower ends of the two booms, and a suspension frame is arranged above the two booms. The suspension frame is connected by a brake cable to control the two movements. In operation, the brake wire is pulled by the brake wire to drive the two booms to yaw the frame pin, so that the brake blocks located at the lower ends of the two booms can clamp the bicycle wheel relative to each other to generate the brakes. The action effect, and after the braking action is completed, the two spring arms can be returned to the initial position by using a torsion spring provided between the swing arm and the frame pin.

In addition, as disclosed in the new patent application No. M430427, "Bicycle Brake Clamp", the utility model comprises: a two-way boom, which are oppositely disposed and each has a shaft hole; and two combined components respectively coupled to the two booms The shaft holes each include a sleeve, an elastic member, a cover and a bolt; wherein the sleeve is disposed in the shaft hole and the front end protrudes corresponding to the front side of the swing arm, and the sleeve is sleeved at the axial center Forming a set of holes and forming a ring at the rear end with an outer diameter larger than the shaft hole and a countersunk groove connecting the hole; the elastic element is sleeved on the front end of the sleeve and the rear side is coupled to the corresponding side The cover sleeve is disposed on the front end of the sleeve and is coupled to the front side of the elastic member, the cover is provided with a through hole and a countersunk groove communicating with the through hole at the front end; the bolt is provided with a A bolt head that matches each countersunk groove.

However, the above bicycle brakes can only be driven by the brake line. The clamping force required for the brakes, overall, does not further increase the design of the brake force, so the overall swaying effect changes with the operator's hand or wrist grasping and gripping force, unable to automatically increase the brake clip Holding power.

In view of the above-mentioned deficiencies in the use of the brake structure, the inventors have researched and improved the above-mentioned shortcomings, and finally the present invention has been produced.

The main object of the present invention is to provide a brake structure improvement in which the two L-shaped receiving members are respectively pivoted on one side of the wheel side, and the other side of each of the receiving members is tapered toward the wheel rotation direction. The guiding inclined surface is respectively provided with a vertical auxiliary shaft portion on each guiding inclined surface, and the two clamping arms are respectively pivoted at one end on each auxiliary shaft portion, and when the two clamping arms are operated, the braking block fixed in the middle portion is clamped to When the wheel rim performs the first stage braking action, the friction force between the brake block and the wheel rim can be used to drive the two clamping arms to pivot around the auxiliary shaft portion, and can be utilized during the pivoting process. The guiding of the guiding inclined surface causes the two clamping arms and the brake block to be closer to the wheel rim to perform the second-stage braking action, so as to achieve the effect of automatically increasing the braking clamping force and improving the overall swaying effect.

Another object of the present invention is to provide an improved brake structure that is not flattened when the brake pads and the wheel rim are in contact with each other because the two clamp arms are further tightened to the wheel rim during the second stage of the braking action. Or, when the brake clamping force is insufficient, the increased braking force can be used to form a tighter clamping to achieve the best braking effect.

In order to achieve the above object and effect, the technical means adopted by the present invention comprises: two mutually symmetrical receiving members, each receiving member having a first side portion and a second side portion respectively bent in an L shape, the first two The side portions are respectively pivoted on the main shaft bolts on the two sides of the wheel and perpendicular to the wheel axle, and the second side portions are provided with a guiding inclined surface which gradually approaches the wheel away from the first side portion, and each guiding inclined surface The upper side is respectively provided with a vertical protruding sub-shaft portion; the two clamping arms are respectively pivoted on the two auxiliary shaft portions, and a brake block is respectively coupled to the middle portion of the two clamping arms, and the two clamping arms are operated away from the auxiliary shaft portion. When one end of the two clamp arms are close to each other, the other end of the two clamp arms respectively pivots the two receiving members to pivot on the main shaft bolt, and at the same time, the two brake blocks also contact the wheel rim and friction, and the brake block is driven by the wheel rim to link the two clamps. The arm pivots along each guiding slope to enable each clamping arm to pivot along each guiding slope Force the brake block to further tighten the wheel rim.

According to the above structure, the spindle bolt is mounted on the frame on both sides of the wheel.

According to the above structure, the main shaft bolt is mounted and coupled to the two ends of a U-shaped bracket, and the two ends of the bracket extend on two sides of the wheel and are respectively provided with a portion, and each of the seats is respectively provided with a screw hole. And each of the spindle bolts is provided with a male threaded portion screwed into each of the screw holes.

According to the above structure, the two first side portions are respectively coupled to a first elastic member, and the two first elastic members are used to maintain the elasticity of the two receiving members to return to the initial position.

According to the above structure, a main shaft sleeve is respectively disposed between the outer peripheral side of the two main spindle bolts and the first elastic member.

According to the above structure, the outer peripheral sides of the two first elastic members are respectively fitted with a cover, and each of the outer covers is provided with a cover on a side facing the first side.

According to the above structure, the two clamp arms are respectively coupled to a second elastic member, and the second elastic members are used to maintain the elasticity of the two clamp arms to return to the initial position.

According to the above configuration, a pair of bushings are respectively disposed between the outer peripheral side of the two auxiliary shaft portions and the second elastic member.

According to the above structure, the angle between the lead inclined surface of the receiving member and the first side portion is preferably 95 to 110 degrees.

In order to obtain a more specific understanding of the above objects, functions and features of the present invention, the following figures are illustrated as follows:

1, 10‧‧‧ spindle bolt

11‧‧‧ external thread

2, 20‧‧‧ sockets

21‧‧‧ first side

211‧‧‧Central hole

212‧‧‧ side jack

22‧‧‧ second side

221‧‧‧ guiding slope

222‧‧‧ side jack

23‧‧‧Sub-axis

231‧‧‧ screw holes

24‧‧‧Sub-sleeve

25‧‧‧Second elastic element

251, 252, 271, 272‧‧ ‧ end

26‧‧‧ Cover

2411, 261, 421‧‧‧ central hole

242, 262, 422‧‧‧ side holes

27‧‧‧First elastic element

3, 30‧‧‧ clip arm

31‧‧‧ pivot shaft hole

311‧‧‧End recess

32‧‧‧Sub-shaft bolts

33‧‧‧Long slot

4‧‧‧ bracket

41, 41a‧‧‧

411‧‧‧ screw hole

412‧‧‧ recessed hole

42‧‧‧Shed cover

43‧‧‧Spindle sleeve

5, 50‧‧‧ brake blocks

6‧‧‧ brake line

7‧‧‧ wheel rims

A‧‧‧ wheel rotation direction

B‧‧‧The joint is pivoted on the spindle bolt

C‧‧‧The brake block is in contact with the wheel rim for the first time

D‧‧‧ brake block is driven by the wheel rim to move the direction

E‧‧‧The arm of the clamp pivots on the guide ramp on the auxiliary shaft

F‧‧‧The second time the brake block touches the wheel rim

Fig. 1 is an overall combined appearance view of the present invention.

Fig. 2 is an exploded perspective view showing the joint portion of the present invention with the clamp arm and the bracket, respectively.

Fig. 3 is a partial combination view of the receiving member of the present invention and the clamping arm and the bracket assembly portion, respectively.

Figure 4 is a front elevational plan view of the overall assembly of the present invention.

Figure 5 is a bottom plan view of the overall combination of the present invention.

Fig. 6 is a schematic view (1) of the operation of the present invention.

Figure 7 is a schematic view of the operation of the present invention (2).

Referring to Figures 1 to 5, it can be seen that the embodiment of the present invention takes the form of a bicycle as an example. The main structure includes: two main spindle bolts 1, 10, two receiving members 2, 20 and two clamping arms 3, 30 and the like. The main shaft bolt 1 is provided with an external thread 11 at one end; in the embodiment, a U-shaped bracket 4 fixed to the bicycle frame is further provided, and the two ends of the bracket 4 extend on the two sides of the wheel and respectively A portion 41, 41a is provided, and a screw hole 411 perpendicular to the wheel axle is disposed on the seat portion 41, and at least one recessed hole 412 is disposed on the side of the screw hole 411, and the external thread portion 11 of each spindle bolt 1 is screwed. In each of the screw holes 411, the main shaft bolt 1 can be coupled to the seat portion 41 in a direction perpendicular to the wheel axis.

The spindle bolt 10 is identical in structure to the spindle bolt 1, and can be coupled to the seat portion 41a in the same manner.

The receiving member 2 has a first side portion 21 and a second side portion 22 which are bent in an L shape. A central hole 211 is defined in the first side portion 21, and a plurality of side plugs are arranged on the circumferential side of the central hole 211. a hole 212, the central hole 211 is sleeved on the spindle bolt 1, and a first elastic member 27 is disposed between the first side portion 21 and the seat portion 41. The first elastic member 27 is respectively disposed at the two ends. An end portion 271, 272 is formed which extends into the recessed hole 412 of the seat portion 41, and the end portion 272 extends into the one-side insertion hole 212 of the first side portion 21, using the first elasticity The element 27 is deformed by force to allow the receiving member 2 to have a resilience to return to the initial position after pivoting.

In a possible embodiment, a sleeve 43 can be sleeved on the outer peripheral side of the spindle bolt 1, and an outer casing 42 can be sleeved on the outer peripheral side of the first elastic member 27. The outer casing 42 has a sleeve for the spindle. A central hole 421 passing through 43 and a side hole 422 through which the end portion 271 passes, and a side of the outer casing cover 42 facing the first side portion 21 is provided with a cover 26 having a sleeve 43 for the spindle sleeve 43 The central hole 261 passing through, and a side hole 262 through which the end portion 272 passes, the main bolt 1 and the first elastic member 27 are protected by perfect covering, and the main shaft bolt 1 and the first side portion 21 are pivoted. The process does not cause friction with the first elastic member 27 to be lost.

The second side portion 22 is provided with a guiding inclined surface 221 which gradually approaches the wheel in a direction away from the first side portion 21, and a vertical protruding auxiliary shaft portion 23 is disposed on the guiding inclined surface 221, and the auxiliary shaft portion 23 is disposed on the auxiliary shaft portion A screw hole 231 is defined in the end surface of the 23, and a plurality of side insertion holes 222 are provided on the circumferential side of the sub-shaft portion 23.

The receiving member 20 is symmetrical with the receiving member 2 and is pivotally coupled to the spindle bolt 10 in the same manner.

The middle portion of the clamp arm 3 is provided with a long slot 33 for engaging the brake block 5, and a pivot shaft hole 31 which can be fitted on the auxiliary shaft portion 23 is disposed at one end of the clamp arm 3, and a pair of axle bolts is utilized. 32 is screwed into the screw hole 231 to prevent the clip arm 3 from being loosened outward. At least one end concave portion 311 is disposed on a side of the pivot shaft hole 31 adjacent to the guide inclined surface 221, and the clamp arm 3 and the guide arm A second elastic member 25 is disposed between the inclined surfaces 221, and the second elastic member 25 is respectively provided with end portions 251 and 252 at the two end portions, and the end portion 251 extends into the one-side insertion hole 222 of the guide inclined surface 221. The end portion 252 extends into the end recess 311, and the second elastic member 25 is deformed by force to cause the clip arm 3 to have a resilience to return to the initial position after pivoting.

In a possible embodiment, a sub-sleeve 24 is disposed on the outer peripheral side of the sub-shaft portion 23, and the sub-sleeve 24 has a central hole 241 through which the sub-shaft portion 23 passes, and a supply end portion 251. The passing side hole 242 is blocked between the second elastic member 25 and the counter shaft portion 23 by the sub-sleeve 24, so that the friction loss of the two elements can be effectively prevented.

The clamp arm 30 has the same basic structure as the clamp arm 3 and is pivotally coupled to the socket 20 in the same manner.

One end of the two clamp arms 3, 30 away from the receiving members 2, 20 is coupled to a brake wire 6, and the brake wire 6 can be used to connect the two clamp arms 3, 30 to each other.

Referring to Figures 6 and 7, it can be seen that when the present invention is in operation, when the wheel passes between the two brake blocks 5, 50 in the direction of arrow A, and one end of the two clamp arms 3, 30 is interlocked by the brake wire 6 and approaches each other. At the same time, the other ends of the two clamp arms 3, 30 respectively link the two receiving members 2, 20 on the spindle bolts 1, 10 (in the direction of the arrow B), while the two brake blocks 5, 50 are in the direction of the arrow C and the wheels The rim 7 is in contact with the friction.

During the above contact friction process, the two brake blocks 5, 50 are driven by the wheel rim 7 to be slightly moved a short distance in the direction of the arrow D, and the two clamp arms 3, 30 can be linked to the respective auxiliary shaft portions 23 along the arrow E. The direction of the pivoting of each of the guiding slopes 221; the displacement of the two clamping arms 3, 30 after pivoting on the guiding slopes 221 can produce a component perpendicular to the direction of the arrow A, so that the two brake blocks 5, 50 can be The direction of the arrow F is then slightly moved a short distance and the wheel rim 7 is forced to achieve further braking. Shake the effect.

In the above structure of the present invention, the angle between the guiding slope 221 of the receiving member 2 and the first side portion 21 is preferably 95 to 110 degrees (the same is the receiving member 20); and the spindle bolts 1 and 10 are In addition to the seat portions 41, 41a of the bracket 4, the bracket 4 can be omitted, and the spindle bolts 1, 10 can be directly mounted and coupled to the bicycle frame to achieve the same lifting brake swaying effect. .

In summary, the bicycle brake structure of the present invention can achieve the effect of automatically increasing the clamping force and improving the overall swaying effect, and is a novel and progressive invention, and the invention patent is filed according to law; The embodiment of the bicycle is taken as an example of a bicycle structure, and the specific application form of the brake structure is not limited thereto, but the above description is only for the preferred embodiment of the present invention, and the technology according to the present invention is used. Variations, modifications, alterations, or equivalent substitutions of the means and scope are also intended to fall within the scope of the invention.

1, 10‧‧‧ spindle bolt

2, 20‧‧‧ sockets

21‧‧‧ first side

212‧‧‧ side jack

22‧‧‧ second side

221‧‧‧ guiding slope

25‧‧‧Second elastic element

3, 30‧‧‧ clip arm

32‧‧‧Sub-shaft bolts

4‧‧‧ bracket

5, 50‧‧‧ brake blocks

Claims (9)

An improved braking structure for clamping a wheel, comprising at least two mutually symmetrical receiving members, each receiving member having a first side portion and a second side portion respectively bent in an L shape, the second The first side portions are respectively pivoted on the main shaft bolts on the two sides of the wheel and perpendicular to the wheel axle, and the second side portions are provided with guiding slopes which gradually approach the wheel away from the first side portion. A vertical protruding sub-shaft portion is respectively disposed on the guiding inclined surface; the two clamping arms are respectively pivotally disposed on the two auxiliary shaft portions, and a brake block is respectively coupled to the middle portion of the two clamping arms, and the two clamping arms are operated to be away from the auxiliary pair When one end of the shaft portion is close to each other, the other end of the two clamp arms respectively pivots the two receiving members to pivot on the main shaft bolt, and at the same time, the two brake blocks also contact with the wheel rim, and the brake block is driven by the wheel rim. The two clamp arms pivot along the guide ramps to force the brake arms to further tighten the wheel rim when pivoting along the guide ramps. The brake structure improvement according to claim 1, wherein the spindle bolt is mounted on a frame on both sides of the wheel. The brake structure improvement according to claim 1, wherein the spindle bolt is mounted and coupled to the two ends of a U-shaped bracket, and the two ends of the bracket extend on two sides of the wheel and are respectively provided with a portion. Each of the seat portions is provided with a screw hole, and each of the spindle bolts is provided with an external thread portion screwed into each of the screw holes. The brake structure improvement according to claim 1, wherein the two first side portions are respectively coupled to a first elastic member, and the two first elastic members are used to maintain the elasticity of the two receiving members to return to the initial position. The brake structure is improved according to the fourth aspect of the invention, wherein a spindle sleeve is respectively disposed between the outer peripheral side of the two main spindle bolts and the first elastic member. The brake structure improvement as described in item 4 of the patent application scope, wherein the first one is The outer peripheral side of the sexual component is respectively fitted with a cover, and each outer cover is provided with a cover on a side facing the first side. The brake structure improvement according to claim 1, wherein the two clamp arms are respectively coupled to a second elastic member, and the second elastic members are used to maintain the elasticity of the two clamp arms to return to the initial position. The brake structure improvement according to claim 7, wherein a pair of bushings are respectively disposed between the outer peripheral side of the two auxiliary shaft portions and the second elastic member. The brake structure improvement according to the first aspect of the invention, wherein the angle between the guiding slope of the receiving member and the first side portion is between 95 and 110 degrees.