CN218882841U - Low-drag type caliper body, brake caliper and brake caliper assembly - Google Patents

Abstract

The utility model belongs to the technical field of automobile brake part, a low formula of dragging pincers body is related to, brake caliper and brake caliper assembly, the internal piston cylinder that is formed with of pincers, be equipped with the seal groove with the piston seal effect on the piston cylinder inner wall, the axle cross-section of seal groove includes the bottom surface, and be located the leading flank and the trailing flank of bottom surface front end and rear end respectively, the leading flank includes the front end inclined plane that is B with piston cylinder radial surface contained angle, the preceding vertical face that wherein one end meets with the front end inclined plane and the stair structure who meets with the front end inclined plane other end, the other end and the bottom surface of preceding vertical face meet, stair structure includes the first step plane that meets with the front end inclined plane, the vertical face of ladder that meets with first step plane and the second step plane that meets with the vertical face of ladder, wherein the distance between preceding vertical face and the vertical face of ladder is C, the distance between first step plane and the second step plane is D. The utility model discloses can reduce braking dragging torque to promote car fuel economy.

Description

Low-drag type caliper body, brake caliper and brake caliper assembly

Technical Field

The utility model belongs to the technical field of the car braking part, a low formula of dragging pincers body, brake caliper and brake caliper assembly is related to.

Background

The new energy automobile is obviously superior to the traditional fuel oil automobile in starting acceleration, and the acceleration performance requirements of various large host factories on the automobile are higher and higher, so that the performance requirements on a brake are more strict, the brake is required to react in time, and the brake is timely carried out in emergency; however, with the popularization of new energy automobiles, the competition of various large host plants is obviously enhanced, the light weight is bound to become the development trend of future automobiles, and the fuel economy also becomes an important performance index concerned by the host plants, so that the technical problem which needs to be solved at present is how to reduce the braking drag torque while meeting the braking performance, thereby improving the fuel economy of the automobiles.

The Chinese patent with the publication number of CN215110216U discloses a clamp body, wherein a piston cylinder is formed in the clamp body, a sealing groove which acts with a piston sealing ring is arranged on the inner wall of the piston cylinder, the axial section of the sealing groove comprises a bottom surface, a front side surface and a rear side surface, the front side surface and the rear side surface are respectively positioned at the front end and the rear end of the bottom surface, the bottom surface of the sealing groove comprises a first bottom surface, a second bottom surface and a V-shaped surface, the first bottom surface is connected with the front side surface and is parallel to the axis of the piston cylinder, the second bottom surface is not parallel to the axis of the piston cylinder, an included angle C of the second bottom surface is an acute angle, the V-shaped surface is connected with the first bottom surface and the second bottom surface, and the aperture corresponding to the first bottom surface is smaller than the average value of the aperture corresponding to the second bottom surface, so that the interference magnitude of the piston sealing ring matched with the first bottom surface is larger than the interference magnitude of the second bottom surface matched with the piston sealing ring. Although the caliper body has fast braking response and improves the driving safety and comfort, the fuel consumption caused by braking drag torque cannot be solved, and the requirement on the fuel economy of an automobile cannot be met.

Therefore, the utility model provides a low formula braking pincers that drags reduces braking dragging torque when satisfying braking pincers braking performance to reach the purpose that promotes automobile fuel economy.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a low formula of dragging pincers body, brake caliper and brake caliper assembly does not need additionally to increase spare part, only through the structure that changes the seal groove, can increase piston return stroke volume, reaches the purpose that reduces the braking moment of dragging to promote automobile fuel economy.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a low formula pincers body that drags, the internal piston cylinder that is formed with of pincers, be equipped with on the piston cylinder inner wall with the seal groove of piston seal circle effect, the axle cross-section of seal groove includes the bottom surface, and is located respectively the leading flank and the trailing flank of bottom surface front end and rear end, the leading flank include with the radial contained angle of piston cylinder be B the front end inclined plane, with the preceding vertical face that one end meets wherein of front end inclined plane and with the stair structure that the front end inclined plane other end meets, the other end of preceding vertical face with the bottom surface meets, stair structure include with the first step plane that the front end inclined plane meets, with the vertical face of ladder that the first step plane meets and with the second step plane that the vertical face of ladder meets, wherein preceding vertical face with distance between the vertical face of ladder is C, the first step plane with distance between the second step plane is D, so that the average value that the first step plane corresponds the aperture is greater than and is close to the average value that the second step plane corresponds the aperture.

Further, the range of B is as follows: 10-17 °, the range of C is: 1.2mm to 1.6mm, wherein the range of D is as follows: 0.4 mm-0.8 mm.

Further, B is 13 DEG, and C is 1.4mm.

Furthermore, the bottom surface is not parallel to the axis of the piston cylinder, the included angle E of the bottom surface is an acute angle, and a V-shaped surface is arranged in the middle of the bottom surface, so that the average value of the corresponding aperture on one side of the bottom surface close to the front side surface is smaller than the average value of the corresponding aperture on one side close to the back side surface.

Further, E.ltoreq.7.5 DEG.ltoreq.10.5 DEG, preferably E =8 deg.

Furthermore, the rear side face comprises a rear end inclined plane and a rear vertical face, the included angle of the rear end inclined plane and the radial face of the piston cylinder is A, the rear vertical face is connected with the rear end inclined plane, and the other end of the rear vertical face is connected with the bottom face.

Further, 25 DEG-A.ltoreq.33 DEG, preferably A =30 deg.

Further, the area of the cross section formed by the front end inclined plane and the first step plane is larger than that formed by the rear end inclined plane.

The utility model provides a low formula of dragging brake caliper, includes the pincers body, piston and piston seal circle, and the pincers body uses foretell low formula of dragging pincers body, and the piston slides and sets up in the piston cylinder of the pincers body, and piston seal circle cover is established in the piston outside and is located the seal groove of the pincers body 1.

A low drag brake caliper assembly includes a bracket, a brake pad, and a brake caliper connected to the bracket, wherein the brake caliper employs the brake caliper.

The beneficial effects of the utility model reside in that:

the utility model provides a pair of low dragging formula pincers body does not need extra increase spare part, only through the structure that changes the seal groove, carries out institutional advancement through the leading flank to the seal groove, adds a stair structure and front end inclined plane formation ladder chamfer, can realize increasing piston return stroke volume, effectively increases the disc clearance value after the braking to effectively reduce the dragging moment, promote the fuel economy of whole car.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the specification which follows.

Drawings

For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic structural view of a caliper body;

FIG. 2 isbase:Sub>A sectional view taken along line A-A of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2 at F;

FIG. 4 is a schematic view of a piston seal ring and a seal groove;

FIG. 5 is piston return test data using this configuration;

fig. 6 shows the return test data of the piston with the conventional sealing groove structure.

Reference numerals: the clamp comprises a clamp body 1, a piston dust cover 2, a piston sealing ring 3, a piston 4, a rear end inclined surface 11, a front end inclined surface 12, a front end inclined surface 13, a first step surface 14, a front vertical surface 15 and a step vertical surface 16.

Detailed Description

The following embodiments of the present invention are provided by way of specific examples, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples can be combined with each other without conflict.

Wherein the showings are for the purpose of illustration only and not for the purpose of limiting the invention, the figures are shown in schematic form and not in pictorial form; for a better explanation of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Referring to fig. 1 to 4, a low drag type caliper body is shown, a piston cylinder is formed in the caliper body 1, a sealing groove acting with a piston sealing ring 3 is formed on an inner wall of the piston cylinder, an axial cross section of the sealing groove includes a bottom surface 12, and a front side surface and a rear side surface respectively located at a front end and a rear end of the bottom surface 12, the bottom surface 12 of the sealing groove is not parallel to an axial line of the piston cylinder, and an included angle E is an acute angle, and a range of E is as follows: 7.5 DEG-E.10.5 DEG, preferably E =8 DEG, and a V-profile is provided in the middle of the bottom surface 12, so that the average value of the corresponding pore diameters of the bottom surface 12 on the side close to the front side is smaller than the average value of the corresponding pore diameters on the side close to the rear side.

In order to reduce stress concentration, the utility model discloses well bottom surface 12 and the department of meeting of leading flank, the department of meeting of bottom surface 12 and trailing flank and the junction of second ladder plane 16 and the vertical face 15 of ladder all have the chamfer structure.

The front side surface of the middle sealing groove of the utility model comprises a front end inclined surface 13 with an included angle B with the radial surface of the piston cylinder and a front vertical surface 15 connected with a front end plane 14, and the other end of the front vertical surface is connected with a bottom surface 12; the other end of front end inclined plane 13 is connected with first ladder plane 14, and the other end and the vertical face 15 of ladder of a ladder plane 14 are connected, and second ladder plane 16 is connected to the other end of the vertical face 15 of ladder, wherein preceding vertical face with the distance between the vertical face 15 of ladder is C, first ladder plane 14 with distance between the second ladder plane 16 is D, so that the average value that first ladder plane 14 corresponds the aperture is greater than and is close to the average value that second ladder plane 16 corresponds the aperture forms the ladder chamfer through front end inclined plane 13 cooperation stair structure. The range of B is: 10 DEG-B.ltoreq.17 DEG, preferably B =13 DEG, C in the range: 1.2 ≦ C ≦ 1.6, preferably C =1.4; d is in the range of 0.4 ≦ D ≦ 0.8, preferably D =0.6. Therefore, when the piston 4 works in a low-pressure stage, the piston sealing ring 3 deforms at a first stage (a front end inclined plane 13) in the step chamfer, when the piston works in a high-pressure stage, the piston sealing ring deforms at a second stage (a first step plane 14), and the return clearance of the piston can be made to be as small as possible in the low-pressure stage and as large as possible in the high-pressure stage in the step chamfer.

The utility model discloses the trailing flank of well seal groove includes the rear end inclined plane 11 that is A with the radial face contained angle of piston cylinder to and the vertical face in back that meets with rear end inclined plane 11, the other end and the bottom surface 12 of the vertical face in back meet. The range of A is: 25 DEG-A.ltoreq.33 DEG, preferably A =30 deg.

Preferably, in the present invention, the area of the cross section formed by the front end inclined plane 13 and the first step plane 14 is larger than the area of the cross section formed by the rear end inclined plane 11.

The utility model discloses a seal groove sets up corresponding to piston seal 3's position, is generally close to the jar mouth one end of piston cylinder.

The utility model provides a low drag braking calliper, includes pincers body 1, piston 4 and piston seal 3, pincers body 1 uses foretell pincers body 1, and piston 4 slides and sets up in the piston cylinder of pincers body 1, and piston seal 3 covers and establishes in the piston 4 outside and is located the seal groove of pincers body 1.

A low-drag brake caliper assembly comprises a support, a brake block and a brake caliper connected with the support, wherein the brake caliper applies the brake caliper, and a caliper body 1 of the brake caliper is connected with the support through a guide pin.

Examples

The utility model provides a low formula brake caliper assembly that drags, includes the support, the brake pads, pincers body 1, piston 4, piston seal 3 and piston dirt proof boot 2, pincers body 1 passes through the uide pin with the support and is connected, is formed with the piston cylinder in the pincers body 1, and piston 4 slides and sets up in the piston cylinder of pincers body 1, and 3 covers of piston seal overlap and establish in the seal groove of seting up on the piston cylinder inner wall in the piston 4 outside and being located, and piston dirt proof boot 2 is located piston seal 3 cylinder mouth one side that is close to the piston cylinder. The axial cross section of seal groove includes the bottom surface to and be located the front flank and the trailing flank of bottom surface front end and rear end respectively, and the bottom surface of seal groove is not parallel and its contained angle E is the acute angle with the piston cylinder axis, wherein is equipped with the V profile in the middle of the bottom surface, and E = 8. The front side of the seal groove comprises a front end inclined plane 12 and a front vertical plane, the front end inclined plane 12 forms an included angle B with the radial surface of the piston cylinder, the front vertical plane is connected with the front end inclined plane 12, the other end of the front vertical plane is connected with the bottom surface 12, and B =13 degrees. The other end of the front end inclined surface 13 is connected to a first step plane 14, wherein a distance C =1.4mm between the front vertical surface and the step vertical surface 15, and a distance D =0.6mm between the first step plane 14 and the second step plane 16. The rear side face of the sealing groove comprises a rear end inclined plane 11 and a rear vertical face, the rear end inclined plane 11 and the piston cylinder radial face form an included angle A, the rear vertical face is connected with the rear end inclined plane 11, the other end of the rear vertical face is connected with the bottom face 12, and A =30 degrees. The area of the cross section formed by the front end slope 13 and the first step plane 14 is larger than the area of the cross section formed by the rear end slope 11.

The cross section of the piston sealing ring 3 is rectangular, the piston sealing ring 3 is made of rubber, and the piston sealing ring 3 can deform under the action of pressure generated on the piston 4 by a hydraulic device, a pneumatic device or other power devices. Under the action of brake fluid, the piston 4 moves from the bottom of a cylinder hole of a piston cylinder of the brake caliper to a claw part of the brake caliper and generates axial pressure, the axial pressure presses a brake block to enable the brake block to rub with a brake disc to generate braking force, so that the piston sealing ring 3 moves to the claw part end of the brake caliper, as the working deformation of the piston sealing ring 3 at low pressure preferentially contacts a front end inclined plane 13 of a stepped chamfer, and the working deformation of a first stepped plane 14 is carried out after the front end inclined plane 13 is in contact deformation, two-stage contact deformation is formed to change the extrusion potential energy of the piston sealing ring 3, so that the piston return curve descends slowly and stably at a high pressure stage, the disc clearance value at the high pressure stage is ensured to be always larger than zero, and the purpose of reducing the dragging torque of the caliper is achieved; referring to fig. 5 to 6, fig. 5 shows the return stroke test data of the piston under different pressures using the structure, fig. 6 shows the return stroke test data of the piston under different pressures using the conventional seal groove structure, the return stroke curve of the piston and the disc clearance value in the present embodiment decrease steadily and slowly in the high pressure section, and the disc clearance value is always greater than zero; the piston return curve and the disc clearance value of the traditional seal groove structure are reduced rapidly in the high-pressure section, and the disc clearance value of the high-pressure section cannot be guaranteed.

The utility model discloses need not additionally increase spare part, the pincers body structure through optimal design brake caliper realizes the low purpose that drags the moment of brake caliper to thereby it satisfies the purpose in disk clearance under the customer high pressure and reaches and reduce real car dragging promotion fuel economy.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.

Claims (10)

1. The utility model provides a low formula of dragging pincers body, the internal piston cylinder that is formed with of pincers, be equipped with on the piston cylinder inner wall with the seal groove of piston seal circle (3) effect, the axial cross-section of seal groove includes bottom surface (12), and is located respectively the leading flank and the trailing flank of bottom surface (12) front end and rear end, its characterized in that: the front side face comprises a front end inclined face (13) with an included angle of a piston cylinder radial face of B, a front vertical face connected with one end of the front end inclined face (13) and a stepped structure connected with the other end of the front end inclined face (13), the other end of the front vertical face is connected with the bottom face (12), the stepped structure comprises a first stepped plane (14) connected with the front end inclined face (13), a stepped vertical face (15) connected with the first stepped plane (14) and a second stepped plane (16) connected with the stepped vertical face (15), the distance between the front vertical face and the stepped vertical face (15) is C, the distance between the first stepped plane (14) and the second stepped plane (16) is D, and therefore the average value of apertures corresponding to the first stepped plane (14) is larger than the average value of apertures corresponding to the second stepped plane (16).

2. The low drag forceps body of claim 1, further comprising: the range of B is as follows: 10-17 °, the range of C is: 1.2mm to 1.6mm, wherein the range of D is as follows: 0.4 mm-0.8 mm.

3. The low drag forceps body of claim 2, further comprising: the B is 13 degrees, and the C is 1.4mm.

4. The low drag forceps body of claim 1, further comprising: the bottom surface (12) is not parallel to the axis of the piston cylinder, an included angle E of the bottom surface is an acute angle, and a V-shaped surface is arranged in the middle of the bottom surface (12), so that the average value of the corresponding aperture of the bottom surface (12) close to one side of the front side surface is smaller than the average value of the corresponding aperture of the bottom surface close to one side of the rear side surface.

5. The low drag caliper body of claim 4, wherein: e is more than or equal to 7.5 degrees and less than or equal to 10.5 degrees.

6. The low drag caliper body of claim 1, wherein: the rear side face comprises a rear end inclined plane (11) with an included angle A with the radial surface of the piston cylinder and a rear vertical face connected with the rear end inclined plane, and the other end of the rear vertical face is connected with the bottom face (12).

7. The low drag forceps body of claim 6, further comprising: a is more than or equal to 25 degrees and less than or equal to 33 degrees.

8. The low drag caliper body of claim 6, wherein: the area of the cross section formed by the front end inclined surface (13) and the first stepped plane (14) is larger than that of the cross section formed by the rear end inclined surface (11).

9. The utility model provides a low formula brake caliper that drags, includes the pincers body (1), piston (4) and piston seal circle (3), its characterized in that: the low-drag pliers body as claimed in any one of claims 1 to 8 is applied to the pliers body, the piston (4) is slidably arranged in a piston cylinder of the pliers body (1), and the piston seal ring (3) is sleeved on the outer side of the piston (4) and is positioned in a seal groove of the pliers body (1).

10. The utility model provides a low formula of dragging brake caliper assembly, includes support, brake pads to and the brake caliper who links to each other with the support, its characterized in that: brake calliper the brake calliper according to claim 9 is applied.

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