CN217603233U

CN217603233U - Adjustable combined rocker arm for brake

Info

Publication number: CN217603233U
Application number: CN202221130942.8U
Authority: CN
Inventors: 唐有民; 杨生建; 黄春燕
Original assignee: Taizhou Youmin Traffic Equipment Co ltd
Current assignee: Taizhou Youmin Traffic Equipment Co ltd
Priority date: 2022-05-12
Filing date: 2022-05-12
Publication date: 2022-10-18
Anticipated expiration: 2032-05-12

Abstract

The utility model discloses an adjustable combination rocking arm for stopper, including movable pull rod and fixed pull rod, the camshaft rotation that is equipped with on movable pull rod and the stopper is connected, and fixed pull rod and camshaft fixed connection are equipped with adjustment mechanism between movable pull rod and the fixed pull rod, and adjustment mechanism sets up and carries out relative angle modulation to fixed pull rod in the movable pull rod side, and the movable pull rod other end is connected with the rope of stopping. The stroke fine-adjustment structure of the hub brake in the prior art is difficult to operate, a professional is required to use a special tool to mutually match the rocker arm and the stay wire for operation, damage to a brake rope is large, time and labor are wasted, and the problems that the stroke of the whole brake is not convenient to adjust in real time, the post market maintenance and the like are solved.

Description

Adjustable combined rocker arm for brake

Technical Field

The utility model relates to a bicycle or electric bicycle stopper spare part technical field especially relates to an adjustable combination rocking arm for stopper.

Background

Electric bicycles and bicycles are more and more popular in people's life due to economical, convenient, energy-saving and environment-friendly travel, the hub brake is widely applied due to the superiority of the hub brake, in the whole vehicle assembly, due to the automatic operation of a production line, the rocker arm and the brake cable of the hub brake are in standard unification when being connected and installed, and due to the fact that the brake has machining errors and assembling errors which are accumulated together, the braking effect of the whole vehicle is good and uneven after the vehicle is off line, and the vehicle needs to be adjusted to the best state in real time when being sold.

The existing fine adjustment structure is difficult to operate, a professional is required to operate the rocker arm and the stay wire by mutually matching with each other through a special tool, the damage to the brake rope is large, some brake ropes need to be assembled with special brake cables, the time and labor are wasted, the cost is high, and the real-time adjustment of the stroke of the brake of the whole vehicle is not facilitated; for example, a novel servo brake structure of CN208559677U comprises a brake box, an adjusting bowl, a crank, a bracket, a reset spring, a rope tightening screw, a brake cable adjusting screw, a hexagonal flange surface embossing nut and the like, wherein a crank rocker arm used on the novel servo brake structure is a through-line type rocker arm structure in the market, and a brake cable passes through a through hole of the rope tightening screw arranged on the crank and is fastened by the hexagonal flange surface embossing nut; some rod-type structures can be assembled only by special brake cables, the brake cables are inconvenient to replace in the later period, the brake cables and the line pipes are scrapped at the same time, and the later maintenance is not facilitated, for example, CN207989607U is a balance fixed drum brake for a vehicle, and the crank rocker arm with the universal rod-type structure is assembled on the balance fixed drum brake. The market needs a new simple structure to replace the existing rocker arm and pull wire state.

Disclosure of Invention

The stroke fine setting structure operation of hub brake among the prior art has been overcome to this application is more difficult, needs the professional to utilize specialized tool to operate rocker arm and acting as go-between mutually, destroys great, wastes time and energy, is unfavorable for the stroke real-time adjustment and the later stage market maintenance scheduling problem of whole car brake moreover to the damage of stopping the rope.

In order to achieve the purpose, the following technical scheme is adopted in the application:

the utility model provides an adjustable combination rocking arm for stopper, includes activity pull rod and fixed pull rod, the camshaft swing joint that is equipped with on activity pull rod and the stopper, fixed pull rod and camshaft fixed connection, the activity pull rod sets up to the open-ended cavity structure in longitudinal symmetry one side, fixed pull rod nestification is in the cavity structure of activity pull rod, be equipped with adjustment mechanism between activity pull rod and the fixed pull rod, adjustment mechanism sets up and carries out relative angle modulation in the activity pull rod side to fixed pull rod, the activity pull rod other end is connected with the rope of stopping.

The further improvement is that: the adjustable pull rod is of a cavity structure with an opening at one side which is vertically symmetrical, the fixed pull rod is embedded in the cavity structure of the movable pull rod, the adjusting mechanism is composed of an adjusting fixing block and an adjusting screw rod which are arranged on the side surface of the movable pull rod, and the adjusting fixing block and the side surface of the movable pull rod are provided with threaded through holes which penetrate through and are adapted to the adjusting screw rod for adjustment and are abutted against the fixed pull rod.

The further improvement is that: activity pull rod one end is equipped with pivot portion, pivot hole has been seted up to pivot portion, the activity pull rod other end is equipped with the brake cable fixed part, be equipped with middle connecting portion between pivot portion and the brake cable fixed part, pivot portion, middle connecting portion and brake cable fixed part form the integral type cavity structure of longitudinal symmetry, a cavity structure side and pivot portion are equipped with open structure, adjust the fixed block setting on the side of middle connecting portion, embedded fixed pull rod in the cavity structure.

The further improvement lies in that: the activity pull rod is panel beating integrated into one piece structure, the round through-hole that the pivot hole link up from top to bottom, the brake cable fixed part sets up to the arc structure of bending outward to the side, it forms with the welding of intermediate junction to adjust the fixed block.

The further improvement lies in that: fixed pull rod one end is equipped with fixed mounting portion, fixed mounting portion is equipped with the dysmorphism mounting hole and is fixed with the dysmorphism lug adaptation that camshaft one end was equipped with, the fixed pull rod other end is equipped with the regulating part and supports and lean on the tail end at adjusting screw.

The further improvement lies in that: the fixed pull rod is of a metal plate integrated forming structure, the thickness of the fixed pull rod is smaller than the distance between two end faces of the opening structure, the fixed installation portion and the pivot portion are of arc structures matched with each other in appearance, the size of the special-shaped installation hole is smaller than that of the pivot hole, and the special-shaped installation hole is matched with the camshaft in a kidney-shaped structure or a polygonal structure or a toothed structure.

The further improvement is that: the angle between the movable pull rod and the fixed pull rod is 0-20 ⁰ 。

The beneficial effects of the utility model are that:

1. the combined rocker arm is formed by combining a nested movable pull rod and a nested fixed pull rod, the fixed pull rod effectively brakes and drives a brake shoe, an adjusting mechanism is arranged on the movable pull rod to adjust the relative angle between the movable pull rod and the fixed pull rod, and a brake rope is fixed at the other end of the movable pull rod, so that the adjusting mechanism adjusts the relative angle between the movable pull rod and the fixed pull rod to reflect the relative state between the brake shoe and a brake hub; the integral brake for assembling the offline does not need special tools, can be adjusted by only manually using a wrench or a screwdriver, is convenient and quick to adjust, and saves time and labor;

2. the brake rope is always fixed on the movable pull rod to be fixed during adjustment, so that when the movable pull rod is adjusted, the position of the brake rope is indirectly driven and adjusted, direct extrusion and fixation of the brake rope are not involved, the brake rope is not damaged, the service life of the brake rope is prolonged, and meanwhile, the safety of the whole vehicle is improved;

3. when the shoe block assembly is worn for a period of time, the adjustment and compensation of the brake shoe wear clearance can be conveniently carried out.

Drawings

Fig. 1 is a perspective view of the adjustable combined rocker arm of the utility model.

Fig. 2 is a perspective view of the movable pull rod and the adjusting mechanism of the present invention.

Fig. 3 is a sectional view of the movable pull rod and the adjusting mechanism of the present invention.

Fig. 4 is a perspective view of the fixing pull rod of the present invention.

Fig. 5 is an assembly explosion diagram of the present invention.

Fig. 6 is a schematic view of the initial state of the assembly of the present invention.

Fig. 7 is a schematic view of the assembly adjustment state of the present invention.

The attached drawings are as follows:

the brake comprises a movable pull rod 1, a movable pull rod 11, a pivot part 12, a pivot hole 13, an intermediate connecting part 14, a brake cable fixing part 15, an opening structure 2, an adjusting fixing block 21, a threaded through hole 3, an adjusting screw rod 4, a fixed pull rod 41, a fixed mounting part 42, a special-shaped mounting hole 43, an adjusting part 5, a cam shaft 5, a fastening screw 6, a shell 7, a frame fixing hole 71 and a brake shoe 8.

Detailed Description

In order to deepen the understanding of the present invention, the present invention will be further described in detail with reference to the attached drawings, and the present embodiment is only used for explaining the present invention, and does not constitute the limitation to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the combination or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The invention is described in further detail below with reference to the following drawings and examples:

as shown in fig. 1-7, an embodiment of an adjustable combined rocker arm for a brake is provided, which includes a movable pull rod 1 and a fixed pull rod 4, wherein the movable pull rod 1 is movably connected with a cam shaft 5 arranged on the brake, the fixed pull rod 4 is fixedly connected with the cam shaft 5, the movable pull rod 1 is configured as a cavity structure with an opening at one side, which is vertically symmetrical, the fixed pull rod 4 is nested in the cavity structure of the movable pull rod 1, an adjusting mechanism is arranged between the movable pull rod 1 and the fixed pull rod 4, the adjusting mechanism is arranged on the side surface of the movable pull rod 1 to adjust the relative angle of the fixed pull rod 4, and the other end of the movable pull rod 1 is connected with a brake rope; the adjustable pull rod comprises a movable pull rod 1, a fixed pull rod 4, an adjusting mechanism and a screw rod 3, wherein the movable pull rod 1 is of a cavity structure with an opening at one side and is vertically symmetrical, the fixed pull rod 4 is embedded in the cavity structure of the movable pull rod 1, the adjusting mechanism consists of an adjusting fixed block 2 and an adjusting screw rod 3 which are arranged on the side surface of the movable pull rod 1, and the adjusting fixed block 2 and the side surface of the movable pull rod 1 are provided with through threaded through holes 21 which are matched with the adjusting screw rod 3 for adjustment and are abutted against the fixed pull rod 4; the combined rocker arm is arranged into a nested movable pull rod and a nested fixed pull rod which are combined, the fixed pull rod is used for effectively braking and driving the brake shoe, the movable pull rod is provided with an adjusting mechanism for adjusting the relative angle between the movable pull rod and the fixed pull rod, and the brake rope is fixed at the other end of the movable pull rod, so that the adjusting mechanism adjusts the relative angle between the movable pull rod and the fixed pull rod, and the relative state between the brake shoe and the brake hub is reflected; the integral brake for assembling the offline does not need special tools, can be adjusted by only manually using a wrench or a screwdriver, and is convenient and quick to adjust, time-saving and labor-saving. In the structure, the brake rope is fixed on the movable pull rod constantly during adjustment, so that when the movable pull rod is adjusted, the position of the brake rope is indirectly driven and adjusted, the brake rope is not extruded and fixed, and the brake rope is not damaged; the service life of the brake rope is prolonged, and meanwhile, the safety of the whole vehicle is also improved.

More preferably: one end of the movable pull rod 1 is provided with a pivot part 11, the pivot part 11 is provided with a pivot hole 12, the other end of the movable pull rod 1 is provided with a brake cable fixing part 14, an intermediate connecting part 13 is arranged between the pivot part 11 and the brake cable fixing part 14, the pivot part 11, the intermediate connecting part 13 and the brake cable fixing part 14 form an integrated cavity structure which is symmetrical up and down, one side surface of the cavity structure and the pivot part 11 are provided with opening structures 15, the adjusting and fixing block 2 is arranged on the side surface of the intermediate connecting part 13, and the fixed pull rod 4 is embedded in the cavity structure; the movable pull rod 1 is of a metal plate integrated structure, the pivot hole 12 is a circular through hole which is through up and down, the brake cable fixing part 14 is of an arc-shaped structure which is bent outwards to the side face, the arc-shaped structure is formed by bending the brake cable in the opposite direction, and the adjusting fixing block 2 is welded with the middle connecting part 13; in this embodiment, the adjusting fixing block 2 is preferably welded on the inner side surface of the inter-connecting portion 13 and is clamped in the cavity structure, the inter-connecting portion 13 can also be welded on the outer side surface of the inter-connecting portion 13, and the brake cable fixing portion 14 is arranged in an arc structure which is bent outwards towards the side surface, so that the brake cable is convenient to fix, reliable and firm, and does not fall off; the movable pull rod and the fixed pull rod are designed into a mutual embedded structure, so that the integral structure is attractive, the structure is simple and compact, the connection is firm and reliable, and the adjustment is convenient.

More preferably: as shown in fig. 4 and 5, a fixing and mounting portion 41 is disposed at one end of the fixing and mounting portion 4, a special-shaped mounting hole 42 is disposed in the fixing and mounting portion 41 to be matched and fixed with a special-shaped protruding block disposed at one end of the camshaft 5, and an adjusting portion 43 disposed at the other end of the fixing and mounting rod 4 abuts against a tail end of the adjusting screw 3. Fixed pull rod 4 is the integrative forming structure of panel beating, fixed pull rod 4 is thick and is greater than 5mm, is less than the distance between the 15 both ends faces of open structure, fixed mounting portion 41 and pivot portion 11 are the arc structure of appearance adaptation, dysmorphism mounting hole 42 size is less than pivot hole 12, dysmorphism mounting hole 42 is oval structure or polygonal structure or dentate structure and camshaft 5 adaptation. In the embodiment, the specially-shaped mounting hole 42 is preferably a waist-shaped structure and is matched and fixed with a quadrilateral lug arranged at the fixed end of the camshaft 5, and a fastening screw 6 is arranged in a threaded fixing hole formed in the top end face of the quadrilateral lug of the camshaft 5 to fix the combined rocker arm on the outer side of the shell 7; the head of the fastening screw 6 covers the pivot hole 12 of the movable pull rod 1 without being exposed.

More preferably: as shown in fig. 5, 6 and 7, the brake applied to the combined rocker arm of the embodiment is provided with a housing 7, a brake shoe 8 and a cam shaft 5, the brake shoe 8 is arranged in the housing 1, one end of the brake shoe 8 abuts against a cam part at one end of the cam shaft 5, the combined rocker arm is sleeved on a special-shaped convex block at the other end of the cam shaft 5 and is fixed outside the housing 7 through a fastening screw 6, an outer convex frame fixing hole 71 is arranged outside the housing 7 and is fixed with a vehicle frame, and an angle adjusted between the movable pull rod 1 and the fixed pull rod 4 is 0-20 degrees; the other end of the movable pull rod 1 is connected with a brake rope, and the brake rope is pulled to one side of the fixed pull rod 4 for braking; the brake rope can be directly pulled and buckled on the brake cable fixing part bent outwards at the tail part of the movable pull rod, and the assembly is convenient and simple. A simple pull line structure may also be provided. After the whole vehicle is assembled and off-line, the adjustment can be realized without special tools and personnel, and when the shoe block assembly is worn for a period of time, the brake shoe wear clearance adjustment and compensation can be conveniently carried out.

The assembly and action process of the application is as follows:

the adjustable combined rocker arm comprises an adjusting screw rod 3, a threaded through hole 21 welded in an adjusting fixing block 2 of a movable pull rod 3 is assembled, a fixed pull rod 4 is placed into a cavity structure of the movable pull rod 1, a fixing installation portion 41 and a pivot portion 11 are aligned and installed on a cam shaft 5, a special-shaped installation hole 42 of the fixed pull rod 4 is sleeved on a special-shaped lug on the top of one end of the cam shaft 5, a threaded fixing hole is formed in the special-shaped lug, the head of a fastening screw 6 is provided with a flange face and covered on the combined rocker arm formed by the movable pull rod 1 and the fixed pull rod 4, a pivot hole 11 of the movable pull rod 1 can rotate freely at the moment, a brake is sleeved on a wheel hub during installation, a frame fixing hole 71 is formed in the upper portion of a shell 7 and fixed with a frame, a brake rope tail portion and a brake line fixing portion 14 of the movable pull rod 1 are fixed, the adjusting screw rod 3 is screwed, and the fixed pull rod 4 is spread inwards to push an angle for gap adjustment.

The embodiments of the present invention are disclosed as the preferred embodiments, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention and make various extensions and changes without departing from the spirit of the present invention.

Claims

1. The utility model provides an adjustable combination rocking arm for stopper, includes movable pull rod (1) and fixed pull rod (4), its characterized in that: the brake is characterized in that the movable pull rod (1) is movably connected with a cam shaft (5) arranged on the brake, the fixed pull rod (4) is fixedly connected with the cam shaft (5), the movable pull rod (1) is arranged to be of a cavity structure with one side being symmetrical and open, the fixed pull rod (4) is nested in the cavity structure of the movable pull rod (1), an adjusting mechanism is arranged between the movable pull rod (1) and the fixed pull rod (4), the adjusting mechanism is arranged on the side of the movable pull rod (1) to adjust the relative angle of the fixed pull rod (4), and the other end of the movable pull rod (1) is connected with a brake rope.

2. The adjustable combination rocker arm for a brake of claim 1, wherein: the adjustable pull rod is characterized in that the movable pull rod (1) is of a cavity structure with an opening on one side which is symmetrical up and down, the fixed pull rod (4) is embedded in the cavity structure of the movable pull rod (1), the adjusting mechanism is composed of an adjusting fixed block (2) and an adjusting screw rod (3) which are arranged on the side surface of the movable pull rod (1), the adjusting fixed block (2) and the side surface of the movable pull rod (1) are provided with a through threaded through hole (21) which is matched and adjusted with the adjusting screw rod (3), and the adjusting fixed block and the movable pull rod are abutted to the fixed pull rod (4).

3. The adjustable combination rocker arm for a brake of claim 2, wherein: activity pull rod (1) one end is equipped with pivot portion (11), pivot hole (12) have been seted up in pivot portion (11), activity pull rod (1) other end is equipped with brake cable fixed part (14), be equipped with intermediate junction portion (13) between pivot portion (11) and brake cable fixed part (14), pivot portion (11), intermediate junction portion (13) and brake cable fixed part (14) form the integral type cavity structure of symmetry from top to bottom, cavity structure side and pivot portion (11) are equipped with open structure (15), adjust fixed block (2) and set up on the side of intermediate junction portion (13), fixed pull rod (4) are fixed in the embedding of cavity structure.

4. The adjustable combination rocker arm for a brake of claim 3, wherein: activity pull rod (1) is panel beating integrated into one piece structure, pivot hole (12) are the circular through-hole that link up from top to bottom, brake cable fixed part (14) set up to the arc structure of bending outward to the side, it forms with intermediate junction portion (13) welding to adjust fixed block (2).

5. The adjustable combination rocker arm for a brake of claim 3, wherein: fixed pull rod (4) one end is equipped with fixed mounting portion (41), fixed mounting portion (41) are equipped with special-shaped mounting hole (42) and are fixed with the special-shaped lug adaptation that camshaft (5) one end was equipped with, fixed pull rod (4) other end is equipped with regulating part (43) and supports and lean on the tail end at adjusting screw (3).

6. The adjustable combination rocker arm for a brake of claim 5, wherein: fixed pull rod (4) are the integrative forming structure of panel beating, fixed pull rod (4) thickness is less than between the both ends face of open structure (15) distance, fixed mounting portion (41) and pivot portion (11) are the arc structure of appearance adaptation, dysmorphism mounting hole (42) size is less than pivot hole (12), dysmorphism mounting hole (42) are oval structure or polygonal structure or dentate structure and camshaft (5) adaptation.

7. The adjustable combination rocker arm for a brake of claim 1, wherein: the angle between the movable pull rod (1) and the fixed pull rod (4) is 0-20 ⁰ 。