CN211468408U

CN211468408U - Pin shaft assembly, brake pedal and vehicle

Info

Publication number: CN211468408U
Application number: CN201922263876.6U
Authority: CN
Inventors: 李琳
Original assignee: Beijing Electric Vehicle Co Ltd
Current assignee: Beijing Electric Vehicle Co Ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-09-11
Anticipated expiration: 2029-12-16

Abstract

The utility model discloses a round pin axle subassembly, brake pedal and vehicle, brake pedal includes: a brake pedal arm having an arm aperture; a shift fork having a fork bore; a pin assembly, the pin assembly comprising: the pin shaft is suitable for penetrating through the arm hole and the shifting fork hole; the flexible piece, the flexible piece with the axial end connection of round pin axle, the flexible piece with the border of fork hole or the border clearance fit in arm hole. According to the utility model discloses brake pedal comes spacing and fixed pin axle through the flexure element, has effectively reduced round pin axle subassembly and shift fork or brake pedal arm and has produced and strike the abnormal sound, reduces brake pedal's noise at work, makes brake pedal use experience better, has improved product quality, and then is favorable to driving the product sales volume.

Description

Pin shaft assembly, brake pedal and vehicle

Technical Field

The utility model relates to the field of automotive technology, more specifically relates to a round pin axle subassembly, brake pedal and vehicle.

Background

In the related art, the lock pin is used to limit the pin shaft from falling after penetrating through the shifting fork and the brake pedal arm of the vacuum booster, but the pin shaft moves in the axial direction when a driver steps on braking, so that the end cap of the pin shaft, the lock pin and the shifting fork can generate knocking abnormal sound.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a brake pedal, brake pedal has effectively improved the problem that easily produces when the driver steps on the braking and strikes the abnormal sound.

The utility model also provides a round pin axle subassembly for above-mentioned brake pedal.

The utility model also provides a vehicle of having above-mentioned brake pedal.

According to the utility model discloses brake pedal, include: a brake pedal arm having an arm aperture; a shift fork having a fork bore; a pin assembly, the pin assembly comprising: the pin shaft is suitable for penetrating through the arm hole and the shifting fork hole; the flexible piece, the flexible piece with the axial end connection of round pin axle, the flexible piece with the border of fork hole or the border clearance fit in arm hole.

According to the utility model discloses brake pedal comes spacing and fixed pin axle through the flexure element, has effectively reduced round pin axle subassembly and shift fork or brake pedal arm and has produced and strike the abnormal sound, reduces brake pedal's noise at work, makes brake pedal use experience better, has improved product quality, and then is favorable to driving the product sales volume.

In addition, the brake pedal according to the above embodiment of the present invention may further have the following additional technical features:

according to the utility model discloses brake pedal of some embodiments, the flexible piece with the border in shift fork hole or the border in arm hole offsets.

According to some embodiments of the utility model, the flexible piece is two, two the flexible piece respectively with the axial both ends of round pin axle are connected.

According to some embodiments of the utility model, the biggest external diameter of round pin axle is D1, the internal diameter in arm hole is D2, the internal diameter in shifting fork hole is D3, the biggest external diameter of flexure piece is D4, and wherein, D1 is less than or equal to D2, and D1 is less than or equal to D3, and D3 < D4.

According to the utility model discloses a some embodiments, the flexible piece has annular mounting groove, the tip of round pin axle is equipped with annular installation department, the installation department inserts in the mounting groove, the notch border of mounting groove with the border in shifting fork hole or the border clearance fit in arm hole.

According to some embodiments of the present invention, the mounting groove has a first side groove surface and a second side groove surface opposite to each other, the first side groove surface is disposed around the second side groove surface, the mounting portion has an outer side surface and an inner side surface opposite to each other, the outer side surface is disposed around the inner side surface, the first side groove surface is provided with a first limit protrusion protruding into the mounting groove, the outer side surface is provided with a first limit recess, and the first limit protrusion extends into the first limit recess to limit the mounting portion from coming out of the mounting groove; the second side groove surface is provided with a second limiting convex part protruding towards the mounting groove, the inner side surface is provided with a second limiting concave part, and the second limiting convex part extends into the second limiting concave part to limit the mounting part to be separated from the mounting groove.

According to some embodiments of the present invention, at least a part of the outer peripheral surface of the second limit projection is an inclined surface, and the inclined surface is along the insertion direction of the mounting portion extends obliquely outward.

According to some embodiments of the invention, the flexible member has a central hole running through in the axial direction.

According to the utility model discloses round pin axle assembly, round pin axle assembly is according to the utility model discloses brake pedal round pin axle assembly.

According to the utility model discloses vehicle includes according to the utility model discloses the brake pedal.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a brake pedal according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a brake pedal according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a brake pedal arm and fork of the brake pedal according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view of a flexible member of a brake pedal according to an embodiment of the present invention;

fig. 5 is a cross-sectional view of a pin of a brake pedal according to an embodiment of the present invention.

Reference numerals:

a brake pedal 100;

a brake pedal arm 10; an arm hole 101;

a booster shift fork 20; a fork hole 201;

a pin shaft assembly 30;

a pin 31; a mounting portion 311; an outer side 312; an inner side surface 313; a first limiting recess 314; a second limiting recess 315;

a flexible member 32; a mounting groove 321; a first side groove surface 322; a second side groove surface 323; a first limit protrusion 324; a second limit projection 325; a central aperture 326; a ramp 327.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features, and "a plurality" means two or more.

The brake pedal 100, the pin shaft assembly 30, and the vehicle according to the embodiment of the present invention are described below with reference to the accompanying drawings.

Referring to fig. 1 and 2, a brake pedal 100 according to an embodiment of the present invention may include: brake pedal arm 10, booster shift fork 20 and round pin axle subassembly 30, round pin axle subassembly 30 is used for connecting brake pedal arm 10 and booster shift fork 20.

Specifically, the brake pedal arm 10 has an arm hole 101, the booster shift fork 20 has a fork hole 201, and the pin assembly 30 includes a pin 31 and a flexible member 32. Wherein, round pin axle 31 can wear to locate arm hole 101 and shifting fork hole 201, and the axial tip of flexible piece 32 and round pin axle 31 is connected. And, the flexible piece 32 is in clearance fit with the edge of the shift fork hole 201, or the flexible piece 32 is in clearance fit with the edge of the arm hole 101, thereby achieving the fixing of the brake pedal arm 10 and the booster shift fork 20 by the pin shaft assembly 30. Here, "clearance fit" means that the flexible piece 32 may abut against the edge of the fork hole 201 or the edge of the arm hole 101, or be spaced apart by a predetermined distance.

For example, in the example shown in fig. 2, the brake pedal arm 10 is located between two arms of the booster shift fork 20, each arm of the booster shift fork 20 is provided with a shift fork hole 201, the pin 31 is inserted into the two shift fork holes 201 and one arm hole 101, and the flexible member 32 is tightly attached to the arm of the booster shift fork 20 to prevent the pin 31 from moving axially and completely eliminate knocking noise.

Therefore, when a driver steps on braking, even if the pin shaft 31 moves axially, the pin shaft assembly 30 is also in contact with the brake pedal arm 10 or the booster shifting fork 20 through the elastic flexible part 32, so that the collision between the pin shaft assembly 30 and the brake pedal arm 10 or the booster shifting fork 20 is effectively reduced, knocking abnormal sound is reduced, the working noise of the brake pedal 100 is reduced, and the brake pedal 100 is enabled to be used and experienced better.

In addition, in the embodiment that the flexible part 32 abuts against the edge of the shift fork hole 201 or the edge of the arm hole 101, as shown in fig. 2, the flexible part 32 not only can play a role of reducing knocking abnormal sound, but also can prevent the pin shaft assembly 30 from moving circumferentially when a driver steps on braking, so that on one hand, the play of the pin shaft 31 is reduced, the working stability is improved, the abrasion of the pin shaft 31 is reduced, on the other hand, the play of the pin shaft 31 is also avoided to generate abnormal sounds such as friction noise, and the like, and the working noise of the brake pedal 100 is further reduced.

According to the utility model discloses brake pedal 100 comes spacing and fixed pin axle 31 through flexible piece 32, has effectively reduced round pin axle subassembly 30 and has produced with booster shift fork 20 or brake pedal arm 10 and strike the abnormal sound, reduces brake pedal 100's noise at work, makes brake pedal 100 use experience better, has improved product quality, and then is favorable to driving the product sales volume.

In some embodiments, the flexible member 32 can be a rubber member, for example, a rubber plug, and the rubber member has a certain flexibility, and can effectively avoid knocking abnormal sound, and the rubber member has good toughness, and the rubber member is difficult for taking place great deformation and influencing the reliability of the fixed pin 31.

It should be noted that, in the embodiment of the present invention, there may be one or two flexible members 32.

For example, in an embodiment where the flexible member 32 is one, one axial end of the pin 31 may have a pin end cap, and the flexible member 32 is connected to the other axial end of the pin 31, so that the pin assembly 30 is prevented from rattling together with the booster yoke 20 or the brake pedal arm 10 at least when the pin 31 moves in one of the axial directions without providing a lock pin or directly contacting the booster yoke 20 or the brake pedal arm 10.

For another example, in some embodiments, as shown in fig. 2, two flexible members 32 are provided, and the two flexible members 32 are respectively connected to two axial ends of the pin 31. Therefore, a lock pin does not need to be arranged, or the lock pin does not need to be directly contacted with the booster shifting fork 20 or the brake pedal arm 10, the pin shaft 31 can also be free from arranging an end cap according to the actual condition, or even if the end cap is arranged, the end cap can be prevented from knocking the booster shifting fork 20 or the brake pedal arm 10. When the pin shaft 31 moves along two axial directions, knocking abnormal sound generated by the pin shaft assembly 30 and the booster shifting fork 20 or the brake pedal arm 10 can be avoided, working noise is effectively eliminated, and the use experience of a driver is improved.

According to some embodiments of the present invention, as shown in fig. 3-5, the maximum outer diameter of the pin 31 is D1, the inner diameter of the arm hole 101 is D2, the inner diameter of the fork hole 201 is D3, and the maximum outer diameter of the flexible member 32 is D4. D1 is not less than D2, D1 is not less than D3, in other words, the two axial ends of the pin 31 are not provided with end cap structures, the pin 31 is not in contact with the brake pedal arm 10 and the booster shifting fork 20 in the axial direction, and the flexible piece 32 is in contact fit with the booster shifting fork 20 or the brake pedal arm 10 instead, so that knocking noise of the pin 31 and the booster shifting fork 20 and the brake pedal arm 10 in the axial direction is eliminated completely.

In addition, D3 < D4, that is, the flexible element 32 can not pass through the shift fork hole 201, so that after the flexible element 32 is connected with the pin 31, the pin 31 can be effectively prevented from being disengaged from the shift fork hole 201 and the arm hole 101, and the reliability of fixedly connecting the booster shift fork 20 and the brake pedal arm 10 by the pin assembly 30 is ensured.

The following describes a connection structure of the flexible member 32 and the pin 31 according to some embodiments of the present invention with reference to the drawings.

In some embodiments, as shown in fig. 4, the flexible element 32 has a mounting groove 321, as shown in fig. 5, the end of the pin 31 is provided with a mounting portion 311, as shown in fig. 2, the mounting portion 311 can be inserted into the mounting groove 321 to achieve a plug connection, and the connection structure of the flexible element 32 and the pin 31 is simple. In addition, in some embodiments, the mounting groove 321 may be an annular groove, and the mounting portion 311 may be an annular protrusion, which is inserted into the annular groove, so that the insertion area of the flexible element 32 and the pin 31 may be increased, and the insertion stability may be improved.

In addition, as shown in fig. 2, the edge of the notch of the mounting groove 321 can be in clearance fit with the edge of the shift fork hole 201 or the edge of the arm hole 101, so as to prevent the pin shaft assembly 30 from coming out of the shift fork hole 201 or the arm hole 101, and effectively avoid knocking abnormal sound.

According to some embodiments of the present invention, as shown in fig. 4, the mounting groove 321 has a first side groove surface 322 and a second side groove surface 323 opposite to each other, the first side groove surface 322 is disposed around the second side groove surface 323, in other words, the diameter of the first side groove surface 322 is greater than the diameter of the second side groove surface 323. As shown in fig. 5, the mounting portion 311 has an outer side surface 312 and an inner side surface 313 opposite to each other, and the outer side surface 312 is disposed around the inner side surface 313, in other words, the diameter of the outer side surface 312 is larger than that of the inner side surface 313. Here, "inner" and "outer" are relative, i.e., in the radial direction of the pin 31, the outer side surface 312 is located on the side of the inner side surface 313 away from the axis of the pin 31.

In some embodiments, referring to fig. 2, 4 and 5, the first side groove surface 322 of the mounting groove 321 is provided with a first limit protrusion 324 protruding into the mounting groove 321, and the outer side surface 312 of the mounting part 311 is provided with a first limit recess 314. The first limit convex part 324 can extend into the first limit concave part 314 to limit the installation part 311 to be separated from the installation groove 321, and the insertion reliability of the installation part 311 and the installation groove 321 is improved.

In other embodiments, as shown in fig. 2, 4 and 5, the second side groove surface 323 of the mounting groove 321 is provided with a second limit protrusion 325 protruding into the mounting groove 321, and the inner side surface 313 of the mounting part 311 is provided with a second limit recess 315. The second limit protrusion 325 can extend into the second limit recess 315 to limit the mounting portion 311 from coming off from the mounting groove 321, thereby improving the reliability of the insertion between the mounting portion 311 and the mounting groove 321.

Of course, in other embodiments, as shown in fig. 2, 4 and 5, the mounting groove 321 may be simultaneously provided with the first limiting protrusion 324 and the second limiting protrusion 325, and the mounting portion 311 may be simultaneously provided with the first limiting recess 314 and the second limiting recess 315, and by the cooperation of the first limiting protrusion 324 and the first limiting recess 314 and the cooperation of the second limiting protrusion 325 and the second limiting recess 315, the mounting portion 311 and the mounting groove 321 can be more reliably connected, and the effect of preventing the mounting portion 311 from coming off from the mounting groove 321 is better.

In some embodiments, the first limiting protrusion 324 is an outer ring disposed in the mounting groove 321, the second limiting protrusion 325 is an inner ring disposed in the mounting groove 321, the first limiting recess 314 is an outer groove disposed in the mounting portion 311, the second limiting recess 315 is an inner groove disposed in the mounting portion 311, the outer ring is engaged with the outer groove, and the inner ring is engaged with the inner groove to prevent the flexible element 32 from falling off.

According to some embodiments of the present invention, referring to fig. 2 and 4, at least a portion of the outer peripheral surface of the second limiting protrusion 325 is an inclined surface 327, the inclined surface 327 extends outward in the insertion direction of the mounting portion 311, in other words, the diameter of the annular inclined surface 327 increases in the insertion direction, in other words, a chamfer (or bevel angle) is provided at the notch of the mounting groove 321, so that the radial dimension of the mounting groove 321 decreases in the insertion direction. From this, at the in-process that installation department 311 inserts mounting groove 321, inclined plane 327 can play the guide effect, is favorable to the installation of flexible piece 32 and round pin axle 31, can save the dismouting time, raises the efficiency, practices thrift the cost, does not influence the reliability that mounting groove 321 and installation department 311 are connected simultaneously.

According to some embodiments of the present invention, as shown with reference to fig. 2 and 4, the flexure 32 has a central bore 326 extending axially therethrough. In the process of assembling and disassembling the flexible part 32 and the pin shaft 31, the flexible part 32 can be deformed at least partially towards the center hole 326, so that the flexible part 32 and the pin shaft 31 can be assembled and disassembled conveniently, the assembling and disassembling time can be saved, the efficiency is improved, and the cost is saved.

According to the utility model discloses the round pin axle subassembly 30 of second aspect embodiment can be according to the utility model discloses the round pin axle subassembly 30 of brake pedal 100 of first aspect embodiment. Because according to the utility model discloses brake pedal 100 of first aspect embodiment has above-mentioned profitable technological effect, consequently according to the utility model discloses the round pin axle subassembly 30 of second aspect embodiment comes spacing and fixed pin axle 31 through flexible piece 32, has effectively reduced round pin axle subassembly 30 and booster shift fork 20 or brake pedal arm 10 and has produced and strike the abnormal sound, reduces brake pedal 100's noise at work, and it is better to make brake pedal 100 use experience, has improved product quality, and then is favorable to driving the product sales volume.

The vehicle according to the third aspect of the present invention includes a brake pedal 100 according to the first aspect of the present invention. Because according to the utility model discloses brake pedal 100 of first aspect embodiment has above-mentioned profitable technological effect, consequently according to the utility model discloses vehicle of third aspect embodiment comes spacing and fixed pin axle 31 through flexible piece 32, has effectively reduced round pin axle subassembly 30 and booster shift fork 20 or brake pedal arm 10 and has produced and strike the abnormal sound, reduces brake pedal 100's noise at work, makes brake pedal 100 use and experiences better, has improved product quality, and then is favorable to driving the product sales volume.

Other configurations and operations of the brake pedal 100 and the vehicle according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the terms "embodiment," "specific embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A brake pedal (100) comprising:

a brake pedal arm (10), the brake pedal arm (10) having an arm hole (101);

a booster shift fork (20), the booster shift fork (20) having a shift fork hole (201);

a pin assembly (30), the pin assembly (30) comprising:

the pin shaft (31), the pin shaft (31) is suitable for being arranged in the arm hole (101) and the shifting fork hole (201) in a penetrating mode;

the flexible part (32), flexible part (32) with the axial end connection of round pin axle (31), flexible part (32) with the border of declutch hole (201) or the border clearance fit of arm hole (101).

2. The brake pedal (100) of claim 1, wherein the flexible member (32) abuts an edge of the fork hole (201) or an edge of the arm hole (101).

3. The brake pedal (100) according to claim 1, wherein the number of the flexible members (32) is two, and the two flexible members (32) are connected to both axial ends of the pin shaft (31), respectively.

4. The brake pedal (100) of claim 3, wherein the pin (31) has a maximum outer diameter of D1, the arm hole (101) has an inner diameter of D2, the fork hole (201) has an inner diameter of D3, and the flexible member (32) has a maximum outer diameter of D4,

D1≤D2，D1≤D3，D3＜D4。

5. the brake pedal (100) according to claim 1, wherein the flexible member (32) has an annular mounting groove (321), the end of the pin shaft (31) is provided with an annular mounting portion (311), the mounting portion (311) is inserted into the mounting groove (321), and the notch edge of the mounting groove (321) is in clearance fit with the edge of the fork hole (201) or the edge of the arm hole (101).

6. The brake pedal (100) of claim 5, wherein the mounting slot (321) has a first side slot surface (322) and a second side slot surface (323) opposite to each other, the first side slot surface (322) being disposed around the second side slot surface (323), the mounting portion (311) has an outer side surface (312) and an inner side surface (313) opposite to each other, the outer side surface (312) being disposed around the inner side surface (313),

the first side groove surface (322) is provided with a first limit convex part (324) protruding into the mounting groove (321), the outer side surface (312) is provided with a first limit concave part (314), and the first limit convex part (324) extends into the first limit concave part (314) to limit the mounting part (311) from falling out of the mounting groove (321);

the second side groove surface (323) is provided with a second limiting convex part (325) protruding towards the inside of the mounting groove (321), the inner side surface (313) is provided with a second limiting concave part (315), and the second limiting convex part (325) extends into the second limiting concave part (315) to limit the mounting part (311) to be separated from the mounting groove (321).

7. The brake pedal (100) of claim 6, wherein at least a portion of the outer peripheral surface of the second limit projection (325) is a slope (327), and the slope (327) extends obliquely outward in the insertion direction of the mounting portion (311).

8. The brake pedal (100) of any one of claims 5-7, wherein the flexible member (32) has a central aperture (326) extending axially therethrough.

9. A pin assembly (30), characterized in that the pin assembly (30) is the pin assembly (30) of a brake pedal (100) according to any one of claims 1-8.

10. A vehicle, characterized by comprising a brake pedal (100) according to any one of claims 1-8.