CN219655130U - EPB callipers anti-sticking dead structure - Google Patents

Abstract

The utility model relates to a metal part mounting structure, in particular to an EPB caliper anti-jamming structure. The problem of screw rod and swivel nut different axiality is solved, provides a mounting structure, and it can effectively prevent that screw rod and swivel nut from appearing the dead condition of card, makes the piston action effective, ensures that the braking of EPB calliper is effective. A guide sleeve is pressed on the screw sleeve to play a guiding role, so that the purpose of preventing the screw rod from being blocked with the screw sleeve is achieved; the appearance of the guide sleeve is matched with the screw sleeve, and the guide sleeve is provided with the oil guide groove, so that the screw rod and the screw sleeve can be effectively prevented from being blocked, the piston action is effective, and the brake of the EPB caliper is ensured to be effective.

Description

EPB callipers anti-sticking dead structure

Technical Field

The utility model relates to a metal part mounting structure, in particular to an EPB caliper anti-jamming structure.

Background

The EPB calipers are important components of the automobile brake with the electronic parking brake function, are also one of important safety parts of the automobile, and the functions of the EPB calipers are effectively and importantly guaranteed to be effective in automobile service brake and parking brake. In the work of the caliper, the threaded rod with external threads rotates to push the threaded sleeve with internal threads, so that the piston moves forwards and backwards, and the caliper can realize effective braking. In actual work, once the screw rod and the screw sleeve are out of coaxiality due to the matching problem, the screw rod and the screw sleeve are blocked, the piston action is invalid, and the clamping brake of the caliper is invalid. In order to solve the defect, a mounting structure capable of effectively preventing clamping of the calipers caused by the fact that the screw rod and the screw sleeve are not coaxial needs to be designed.

The utility model discloses a brake caliper assembly of electron parking braking system for vehicle is disclosed to bulletin number CN203161909U, including actuating mechanism assembly and parking brake caliper, the actuating mechanism assembly is arranged the parking brake caliper head, the actuating mechanism assembly with the parking brake caliper passes through screw interconnect, the parking brake caliper includes brake caliper body, parking swivel nut, parking screw rod, piston and friction disc the antifriction piece is established to the tip of parking screw rod. The antifriction sheet aims at the problems that the axial space shortening difficulty in the prior art caused by the use of the thrust needle roller bearing is unfavorable for the axial space arrangement of the parking brake caliper assembly, the product competitiveness is reduced due to high research and development manufacturing cost, and the like, and can obviously shorten the axial dimension so as to reduce the axial arrangement space of the parking brake caliper assembly, reduce the cost of parts, improve the assembly manufacturability of the product, and relatively reduce the whole vehicle servicing quality. CN103624456a relates to a positioning device, which has: a clamp; a pressure conversion member; a frame portion; a base portion. The jig includes a holding mechanism that is driven by pressure supply to hold a workpiece as a processing object. The pressure conversion member is provided to the jig, converts a 1 st pressure supplied from outside the jig into a 2 nd pressure larger than the 1 st pressure, and supplies the converted pressure to the jig. The frame portion supports the jig so as to be rotatable about the 1 st rotation axis. The base portion supports the frame portion so as to be rotatable about a 2 nd rotation axis substantially perpendicular to the 1 st rotation axis.

The publication No. CN201866139U discloses a brake caliper applied to a motor vehicle braking system, which comprises a brake caliper body, an outer brake block, a brake disc, an inner brake block, a piston, a brake caliper body, a sliding screw pair and a power source, wherein the sliding screw pair is assembled in the brake caliper body, the sliding screw pair is contacted with the end face of the piston, a coating layer with extremely high wear resistance, excellent temperature performance and corrosion resistance is arranged on the sliding screw pair, and the coating layer is a fluorine resin coating. Meanwhile, the transmission efficiency of the sliding screw pair is obviously improved; the sliding screw pair part has good adhesive force, the coating has extremely high wear resistance, excellent temperature performance and corrosion resistance, and has the characteristics of higher reliability, good manufacturability and good economy.

The above patent has low relevance to the present utility model.

Disclosure of Invention

The utility model aims to solve the technical problem that the screw rod is not coaxial with the screw sleeve, and provides a mounting structure which can effectively prevent the screw rod and the screw sleeve from being blocked, so that the piston action is effective, and the brake of the EPB caliper is ensured to be effective.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

In order to solve the technical problems, the utility model is realized by adopting the following technical scheme:

an EPB caliper anti-seizing structure is characterized in that a guide sleeve 4 is additionally arranged in the original structure, and the guide sleeve 4 is pressed on a screw sleeve to play a guiding role, so that screw threads are tightly matched, and the seizing is prevented.

Further, the shape of the guide sleeve 4 is matched with that of the screw sleeve 2.

Further, the guide sleeve 4 defines a gap with the piston 1.

Further, the guide sleeve 4 is provided with an oil guiding groove 7.

Further, the two ends of the guide sleeve 4 are provided with inner chamfer angles 5, so that the guide sleeve is easy to press fit with the screw sleeve 2.

Further, the guide sleeve 4 is provided with an outer chamfer 6 for easy assembly with the piston.

Further, the screw sleeve 2 is matched with the screw rod 3.

Further, the sleeve 2 is coaxial with the screw 3.

Further, the screw 3 rotates to push the screw sleeve 2, so that the piston 1 advances.

Further, two or more oil guiding grooves 7 are arranged and uniformly distributed on the surface of the guide sleeve 4.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model can effectively prevent the screw rod and the screw sleeve from being blocked, so that the piston acts effectively, and the brake of the EPB caliper is ensured to be effective.

Drawings

The utility model is further described below with reference to the accompanying drawings:

FIG. 1 is a schematic diagram of a conventional anti-seize structure of an EPB caliper;

FIG. 2 is a schematic view of a screw sleeve;

FIG. 3 is a schematic view of a screw rotation pushing sleeve;

FIG. 4 is a schematic diagram of an anti-seize structure of an EPB caliper according to the present utility model;

FIG. 5 is a schematic view of a guide sleeve provided with an oil guide groove;

FIG. 6 is a schematic view of the outside chamfer of the guide sleeve;

in the figure:

1. a piston;

1. a screw sleeve;

2. a screw;

3. guide sleeve;

4. chamfering the inner side;

5. and (5) chamfering the outer side.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model become more apparent, the technical solutions in the embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings in the embodiments of the present utility model. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the utility model. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

In the description of the present utility model, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present utility model.

The utility model is described in detail below with reference to the attached drawing figures:

the utility model relates to a metal part mounting structure, in particular to an EPB caliper anti-jamming structure. The problem of screw rod and swivel nut different axiality is solved, provides a mounting structure, and it can effectively prevent that screw rod and swivel nut from appearing the dead condition of card, makes the piston action effective, ensures that the braking of EPB calliper is effective. A guide sleeve is pressed on the screw sleeve to play a guiding role, so that the purpose of preventing the screw rod from being blocked with the screw sleeve is achieved. The appearance of guide pin bushing 4 matches with swivel nut 2, open and lead oil groove 7, the utility model can prevent effectively that screw rod and swivel nut from appearing the dead condition of card, make the piston action effective, ensure EPB calliper braking effective.

A guide sleeve is pressed on the screw sleeve to play a guiding role, so that the purpose of preventing the screw rod from being blocked with the screw sleeve is achieved.

FIG. 1 is a schematic diagram of a typical design

As shown in fig. 1, 2 and 3, in a normal design structure, the screw 3 rotates to push the screw sleeve 2, so that the piston 1 advances to achieve a caliper braking effect. In the moving process, the spiral movement is converted into linear movement, the screw rod 3 and the screw sleeve 2 are precise matching parts, the thread clearance cannot be too large, the thread is stressed greatly in the advancing and retreating processes of the piston 1, and if the screw rod 3 and the screw sleeve 2 are not coaxial, the screw rod screw sleeve is extremely easy to clamp, so that the caliper is clamped.

Through design improvement, as shown in fig. 4, 5 and 6, a guide sleeve 4 (the guide sleeve 4 and the piston 1 limit a gap) is added in the original structure, so that the guide effect is achieved, the threaded fit is tight, and the clamping is prevented. The appearance of the guide sleeve 4 is matched with that of the screw sleeve 2, and an oil guide groove 7 is formed, so that the flow of brake fluid is not blocked. In addition, the inner side chamfers 5 at the two ends of the guide sleeve 4 are easy to press fit with the screw sleeve 2. The outer chamfer 6 of the guide sleeve 4 is easy to assemble with the piston, and by adopting the design structure, the phenomenon that the calipers are blocked due to the fact that the screw rod and the screw sleeve are not coaxial is effectively avoided.

The foregoing is merely illustrative of specific embodiments of the present utility model, and the scope of the utility model is not limited thereto, but any modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present utility model will be apparent to those skilled in the art within the scope of the present utility model. And all that is not described in detail in this specification is well known to those skilled in the art.

Claims (7)

1. An EPB calliper anti-sticking dead structure, its characterized in that:

a guide sleeve (4) is pressed on the screw sleeve (2) to play a role in guiding, so that the screw threads are tightly matched and the screw is prevented from being blocked;

the appearance of the guide sleeve (4) is matched with that of the screw sleeve (2);

the guide sleeve (4) and the piston (1) define a gap;

an oil guide groove (7) is arranged on the guide sleeve (4).

2. The EPB caliper anti-seize structure of claim 1, wherein:

the two ends of the guide sleeve (4) are provided with inner chamfer angles (5), so that the guide sleeve is easy to press fit with the screw sleeve (2).

3. The EPB caliper anti-seize structure of claim 2, characterized in that:

the guide sleeve (4) is provided with an outer chamfer (6) which is easy to assemble with the piston.

4. An EPB caliper anti-seize structure according to claim 3, characterized in that:

the screw sleeve (2) is matched with the screw rod (3).

5. The EPB caliper anti-seize structure of claim 4, wherein:

the screw sleeve (2) is coaxial with the screw rod (3).

6. The EPB caliper anti-seize structure of claim 5, wherein:

the screw rod (3) rotates to push the screw sleeve (2) so as to enable the piston (1) to advance.

7. The EPB caliper anti-seize structure of claim 6, wherein:

the oil guide grooves (7) are formed in two or more than two, and are uniformly distributed on the surface of the guide sleeve (4).