CN218316654U - Brake booster assembly and vehicle - Google Patents

Abstract

The utility model provides a brake booster assembly and a vehicle, the brake booster assembly of the utility model comprises a shell, a push rod, a displacement sensing unit and a sensing piece, wherein the push rod is arranged inside the shell, and the push rod is connected with a brake pedal and moves along the axial direction of the shell due to the driving of the brake pedal; the displacement sensing unit is arranged on the shell and is connected with the vehicle control unit; the induction piece is arranged on the shell in a sliding manner; the displacement sensing unit senses the displacement of the sensing member and transmits the sensed displacement of the sensing member to the vehicle control unit. The utility model discloses a brake booster assembly through setting up displacement induction element on the casing, can make displacement induction element keep with the relative still of automobile body, promotes the reliability of being connected between displacement induction element and the vehicle control unit, and then guarantees the use reliability of this booster assembly.

Description

Brake booster assembly and vehicle

Technical Field

The utility model relates to a vehicle braking technical field, in particular to brake booster assembly. And simultaneously, the utility model discloses still relate to a dispose vehicle of this brake booster assembly.

Background

At present, a traditional vacuum booster with a master cylinder liquid storage tank assembly is used for a fuel vehicle to provide braking assistance for a whole vehicle braking system, and along with popularization of electric operation, an electronic vacuum pump is specially introduced to provide a vacuum source for the vacuum booster in order to continue to use the vacuum booster assembly. Because the electronic vacuum pump has higher noise when working, a vacuum tube must be used between the electronic vacuum pump and the vacuum booster, and sometimes a vacuum tank is added in the middle of the vacuum tube, a large amount of cabin space of the whole vehicle is occupied, and the weight of the whole vehicle is also increased. There is also a risk of vacuum leakage during operation of the vacuum tube, for which reason the iBooster, i.e. the electronically integrated booster assembly, comes into play.

The electronic integrated booster assembly adopts the basic structure and principle of a pedal simulator, a direct-current brushless motor, an ECU assembly, secondary gear transmission (or worm and gear transmission + planetary gear transmission) + a screw bolt sleeve + a guide support assembly + a support frame + a return spring, when the motor works normally, power provided by the motor is transmitted to the screw rod through the secondary gear transmission, the screw rod drives the guide support assembly to advance, the guide support pushes the support frame to advance, the support frame pushes a first piston of a main cylinder to advance, so that high pressure is established, high-pressure brake fluid pushes a piston of a brake caliper to advance through a brake pipeline, and the piston pushes a friction plate to clamp a brake disc, so that braking action is realized.

In the prior art, when a driver normally steps on a brake pedal, the pedal stroke sensor is mostly used for sensing the formation of the pedal, and then the action of a motor is controlled. However, the pedal stroke sensor in the conventional brake booster assembly is limited by its own mounting structure, which easily causes the situation that the wire harness connected with the pedal stroke sensor is broken, and reduces the reliability of the brake booster assembly.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to a brake booster assembly to reduce the manufacturing cost while ensuring the reliability of the brake booster assembly.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a brake booster assembly comprising:

a housing;

the push rod is arranged inside the shell, is connected with the brake pedal and moves along the axial direction of the shell under the driving of the brake pedal;

the displacement sensing unit is arranged on the shell and is connected with the vehicle control unit;

the induction piece is arranged on the shell in a sliding mode and is connected with the push rod, and the induction piece is close to or far away from the displacement induction unit due to the driving of the push rod;

the displacement sensing unit senses the displacement of the sensing member and transmits the sensed displacement of the sensing member to the vehicle control unit.

Further, the push rod is connected with the sensing piece through a shifting needle; the needle poking device comprises a needle poking arm connected with the push rod and a needle poking rod, wherein the upper end and the lower end of the needle poking rod are respectively connected with the sensing piece and the needle poking arm.

Furthermore, the right end of the needle poking arm is provided with a first connecting part connected with the push rod, and the first connecting part is annular.

Furthermore, a second connecting part connected with the needle poking rod is arranged at the left end of the needle poking arm and is annular; the second connecting portion is provided with a connecting hole, and the lower end of the poking needle rod is inserted into the connecting hole and is in interference fit with the connecting hole.

Furthermore, the lower end face of the shifting needle rod is welded with the first connecting part, and a welding groove is formed in the lower end face of the shifting needle rod.

Furthermore, an elastic part is arranged on the needle poking rod, and the elastic part is provided with a limiting part which is limited on the needle poking rod along the axial direction of the needle poking rod and an elastic arm which is connected with the limiting part and is tightly propped against the bottom of the induction part.

Furthermore, the limiting part is sleeved on the needle poking rod and is in interference fit with the needle poking rod; the poking needle rod is sleeved with a sheath, the bottom of the sheath is abutted to the second connecting portion, and a limiting boss abutted to the top of the sheath is arranged on the limiting portion.

Further, the outer diameter of the sheath is the same as the outer diameter of the second connecting portion.

Compared with the prior art, the utility model discloses following advantage has:

brake booster assembly, through setting up displacement induction element on the casing, can make displacement induction element keep with the relative still of automobile body, promote the reliability of being connected between displacement induction element and the vehicle control unit, and then guarantee the use reliability of this booster assembly.

In addition, through making displacement induction element and vehicle control unit adopt the hard-line to be connected, be favorable to further promoting the joint strength between displacement induction element and the vehicle control unit.

In addition, the welding groove is formed in the lower end face of the shifting needle rod, so that the shifting needle rod and the shifting needle arm are welded conveniently, and the welding strength between the shifting needle rod and the shifting needle arm is improved.

Another object of the present invention is to provide a vehicle, wherein the brake booster assembly is disposed on the vehicle.

The utility model discloses a vehicle, through being equipped with foretell brake booster assembly, be favorable to promoting the reliability of vehicle to be favorable to reduce cost, and then promote the satisfaction of customer to the vehicle.

Drawings

The accompanying drawings, which form a part of the present disclosure, are provided to provide a further understanding of the present disclosure, and the exemplary embodiments and descriptions thereof are provided to explain the present disclosure, wherein the related terms in the front, back, up, down, and the like are only used to represent relative positional relationships, and do not constitute an undue limitation of the present disclosure. In the drawings:

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

FIG. 2 is a schematic view of a portion of a brake booster assembly according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a setting needle according to an embodiment of the present invention;

fig. 4 is a schematic view of an internal structure of the setting pin according to the embodiment of the present invention;

FIG. 5 is an enlarged view of portion A of FIG. 4;

fig. 6 is a schematic structural view of the setting needle when the setting needle arm and the setting needle bar are integrally formed according to the embodiment of the present invention.

Description of reference numerals:

1. a housing; 101. a slideway; 2. a displacement sensing unit; 3. setting a needle; 301. a needle poking arm; 3011. a first connection portion; 3012. a second connecting portion; 302. a needle shifting rod; 4. an elastic member; 401. a limiting part; 4011. a limiting boss; 402. a resilient arm; 5. a sheath; 6. welding a groove; 7. a support frame; 8. a push rod fork; 9. a first ball-head rod; 10. a jack rod seat; 11. a second ball-head lever; 12. a master cylinder piston; 13. a push rod; 14. a nut; 15. a sensing member.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features of the embodiments of the present invention may be combined with each other.

In the description of the present invention, it should be noted that, if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same order, but are to be construed as referring to the same order.

In addition, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless otherwise specifically limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example one

The present embodiment relates to a brake booster assembly, which comprises a housing 1, a push rod 13, a displacement sensing unit 2, and a sensing member 15. Wherein, the push rod 13 is arranged inside the shell 1, and the push rod 13 is connected with the brake pedal and moves along the axial direction of the shell 1 due to the driving of the brake pedal. The displacement sensing unit 2 is disposed on an outer surface of the housing 1 and is connected with a vehicle control unit. The sensing member 15 is slidably disposed on the inner surface of the housing 1 and connected to the push rod 13, and the sensing member 15 is driven by the push rod 13 to approach or separate from the displacement sensing unit 2. The displacement sensing unit 2 senses the displacement of the sensing member 15 and transmits the sensed displacement of the sensing member 15 to the vehicle control unit.

The vehicle control unit in this embodiment may be an electronic control unit of a vehicle in the prior art.

Based on the above general description, as a preferred embodiment, as shown in fig. 1 to 6, in this embodiment, the casing 1 is cylindrical as a whole, the push rod 13 is disposed at the central axis of the casing 1, during the actual use, the front end of the push rod 13 is further provided with the push rod fork 8 and the first ball rod 9, the push rod fork 8 is connected with the brake pedal, and under the pushing of the brake pedal, the push rod fork 8 moves rightward along the axial direction of the casing 1, and further drives the first ball rod 9 and the push rod 13 to move rightward.

As shown in fig. 1 and 2, a slide 101 extending in the axial direction of the housing 1 is provided on the inner surface of the housing 1, and the sensor 15 is slidably provided in the slide 101. The displacement sensing unit 2 is arranged on the outer surface of the shell 1, and in the process that the push rod 13 moves rightwards, the push rod can drive the sensing piece 15 to move rightwards to be close to the displacement sensing unit 2. It should be noted that the sensing element 15 of the present embodiment may be a magnet commonly used in the prior art, and the displacement sensing unit 2 may be a pedal stroke sensor commonly used in the prior art.

As shown in fig. 1 and fig. 2, in an implementation, the push rod 13 is connected to the sensing element 15 through the setting needle 3, and the setting needle 3 includes a setting needle arm 301 connected to the push rod 13, and a setting needle rod 302 connected to the sensing element 15 and the setting needle arm 301 at upper and lower ends thereof. The top of the poking needle rod 302 is inserted into the left end of the strip-shaped magnet.

The right end of the needle poking arm 301 is provided with a first connecting part 3011 connected with the push rod 13, and the first connecting part 3011 is in a ring shape. In specific implementation, the first connection portion 3011 is sleeved on the right end of the push rod 13, the left end face of the first connection portion 3011 abuts against a shaft shoulder arranged on the push rod 13, and the right end face of the first connection portion 3011 abuts against a nut 14 screwed on the push rod 13, so that the first connection portion 3011 is limited in the axial direction of the push rod 13. And through making first connecting portion 3011 be the ring form, be favorable to making the power of push rod 13 that dial needle arm 301 received more even, prevent at the in-process that push rod 13 promoted dial needle arm 301 and remove, dial the phenomenon that needle 3 appears askew.

As shown in fig. 3 and 4, a second connection portion 3012 connected to the needle setting rod 302 is provided at the left end of the needle setting arm 301, the second connection portion 3012 is in a ring shape, a connection hole is provided on the second connection portion 3012, and the lower end of the needle setting rod 302 is inserted into the connection hole and is in interference fit with the connection hole.

In order to improve the connection strength between the setting needle bar 302 and the setting needle arm 301, as shown in fig. 4 and 5, it is preferable to weld the lower end surface of the setting needle bar 302 to the first connection portion 3011, and to provide a welding bevel 6 on the lower end surface of the setting needle bar 302, so that the welding of the setting needle bar 302 to the second connection portion 3012 is facilitated, and the welding strength of the setting needle bar 302 to the second connection portion 3012 is also facilitated.

It should be noted that, the needle setting lever 302 and the needle setting arm 301 may be formed integrally, instead of using a separate structure, as shown in fig. 6, the needle setting lever 302 and the needle setting arm 301 may be formed by bending the same round rod. In this way, the connection between the push rod 13 and the sensing member 15 can be realized, and the manufacture of the setting needle 3 is also simplified.

As shown in fig. 2 and fig. 3, the needle setting lever 302 is provided with an elastic element 4, and the elastic element 4 has a position-limiting portion 401 disposed on the needle setting lever 302, and an elastic arm 402 connected to the position-limiting portion 401 and abutting against the bottom of the sensing element 15. Through making elastic arm 402 support the bottom of tight response piece 15, can make response piece 15 and casing 1 hug closely to prevent that response piece 15 from producing the downward slope, guarantee displacement induction element 2 and gather the accuracy of response piece 15 displacement. The elastic arm 402 can also support the position of the sensing element 15 far away from the poking needle rod 302, so as to prevent the sensing element 15 from tilting and improve the stability of the movement of the sensing element.

As shown in fig. 3 and 4, the position-limiting portion 401 is sleeved on the setting needle bar 302 and is in interference fit with the setting needle bar 302. The sleeve is equipped with sheath 5 on the setting aside needle pole 302, and the bottom and the second connecting portion 3012 butt of sheath 5 are equipped with the spacing boss 4011 of terminal surface and the top butt of sheath 5 down on the spacing portion 401. During specific implementation, sheath 5 is cylindricly to with dial between the needle pole 302 clearance fit, the lower extreme of spacing portion 401 is inserted and is established to the sheath 5 in, the conformal formation has two spacing bosss 4011 on spacing portion 401, two spacing bosss 4011 outwards stretch out, and through the top butt with sheath 5, with realize spacing portion 401 at dial needle pole 302 axial ascending spacing, so that elastic component 4 supports tightly with response piece 15.

Preferably, in the present embodiment, as shown in fig. 3 and 4, the outer diameter of the sheath 5 is the same as the outer diameter of the second connecting portion 3012, so as to prevent the sheath 5 from tilting during following the movement of the needle setting rod 302, which may adversely affect the movement of the needle setting rod 302.

It should be noted that, in the case that the needle setting arm 301 and the needle setting rod 302 are integrally formed, the structure of the sheath 5 may be as shown in fig. 6, at this time, the sheath 5 is L-shaped, and a part of the sheath is sleeved on the needle setting arm 301, so as to ensure the stability of the sheath 5 after installation, and the top of the sheath 5 is cylindrical and is abutted against the limit boss 4011.

The brake booster assembly of this embodiment, after response piece 15 moved to the right, then the displacement that its produced can be sensed by displacement induction element 2, and displacement induction element 2 can give vehicle control unit with this signal transmission, and vehicle control unit control motor action, and then realize the braking of vehicle.

It should be further noted that the brake booster assembly of the present embodiment further includes a supporting frame 7 disposed inside the housing 1, a push rod seat 10 disposed on the supporting frame 7 and located on the right side of the push rod 13, and a second ball head rod 11 connected to the push rod seat 10, so that after the push rod 13 moves rightwards for a certain distance, the push rod seat 10 and the second ball head rod 11 are pushed to move rightwards, and then a master cylinder piston 12 of the vehicle braking system is pushed to move rightwards, so that a master cylinder of the vehicle braking system establishes a high pressure, and thus braking of the vehicle is facilitated. In this way, in the event of failure of certain electronic components of the brake booster assembly, braking operations can still be performed to enhance the safety of the vehicle.

The brake booster assembly of this embodiment through set up displacement induction element 2 on the surface of casing 1, can make displacement induction element 2 keep with the relative still of automobile body, is favorable to promoting the connection reliability between displacement induction element 2 and the vehicle control unit, and then guarantees the use reliability of this booster assembly.

Example two

The embodiment relates to a vehicle, and the vehicle is provided with the brake booster assembly in the first embodiment.

The vehicle of this embodiment through being equipped with the brake booster assembly among the embodiment one, is favorable to promoting the reliability of vehicle to be favorable to reduce cost, and then promote the customer to the satisfaction of vehicle.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A brake booster assembly, comprising:

a housing (1);

the push rod (13) is arranged inside the shell (1), and the push rod (13) is connected with a brake pedal and moves along the axial direction of the shell (1) under the driving of the brake pedal;

the displacement sensing unit (2) is arranged on the shell (1) and is connected with the vehicle control unit;

the induction piece (15) is arranged on the shell (1) in a sliding mode and is connected with the push rod (13), and the induction piece (15) is close to or far away from the displacement induction unit (2) due to the driving of the push rod (13);

the displacement sensing unit (2) senses the displacement of the sensing member (15) and transmits the sensed displacement of the sensing member (15) to the vehicle control unit.

2. A brake booster assembly as set forth in claim 1 wherein:

the push rod (13) is connected with the induction piece (15) through a shifting needle (3);

the needle poking (3) comprises a needle poking arm (301) connected with the push rod (13), and a needle poking rod (302) of which the upper end and the lower end are respectively connected with the sensing piece (15) and the needle poking arm (301).

3. A brake booster assembly as set forth in claim 2 wherein:

the right end of the needle poking arm (301) is provided with a first connecting part (3011) connected with the push rod (13), and the first connecting part (3011) is in a circular ring shape.

4. A brake booster assembly as set forth in claim 2 wherein:

the left end of the needle poking arm (301) is provided with a second connecting part (3012) connected with the needle poking rod (302), and the second connecting part (3012) is annular;

and a connecting hole is formed in the second connecting part (3012), and the lower end of the poking rod (302) is inserted into the connecting hole and is in interference fit with the connecting hole.

5. The brake booster assembly of claim 4, wherein:

the lower end face of the shifting needle rod (302) is welded with the second connecting portion (3012), and a welding groove (6) is formed in the lower end face of the shifting needle rod (302).

6. A brake booster assembly as set forth in claim 4 wherein:

be equipped with elastic component (4) on dialling needle bar (302), elastic component (4) have locate dial spacing portion (401) on needle bar (302), and with spacing portion (401) are connected, and support tightly in elastic arm (402) of response piece (15) bottom.

7. The brake booster assembly of claim 6, wherein:

the limiting part (401) is sleeved on the shifting needle rod (302) and is in interference fit with the shifting needle rod (302);

dial the cover on needle bar (302) and be equipped with sheath (5), the bottom of sheath (5) with second connecting portion (3012) butt, be equipped with on spacing portion (401) with spacing boss (4011) of the top butt of sheath (5).

8. The brake booster assembly of claim 7, wherein:

the outer diameter of the sheath (5) is the same as the outer diameter of the second connecting portion (3012).

9. A vehicle, characterized in that:

the vehicle is provided with a brake booster assembly as claimed in any one of claims 1 to 8.

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