CN211308537U - Vehicle brake capable of automatically and emergently braking under retardation condition - Google Patents
Vehicle brake capable of automatically and emergently braking under retardation condition Download PDFInfo
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- CN211308537U CN211308537U CN201922435027.4U CN201922435027U CN211308537U CN 211308537 U CN211308537 U CN 211308537U CN 201922435027 U CN201922435027 U CN 201922435027U CN 211308537 U CN211308537 U CN 211308537U
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Abstract
In order to solve the technical problem that the existing vehicle power-assisted brake with the function of retardation recognition has potential safety hazard, the utility model provides a vehicle brake which can still automatically and emergently brake under the retardation condition, a piston (or plunger) in the traditional vehicle power-assisted brake is designed into a two-section split structure formed by coaxially clamping a front section and a rear section, under the automatic emergency braking mode, when foreign matters or feet of a driver extend into the bottom of a brake pedal, the movement of the front section is blocked, so that the front section is separated from the rear section, the situation that the feet of the driver are clamped and damaged due to the fact that the front section continues to translate is avoided, or the situation that parts of a braking system are damaged due to firm foreign matters occurs; meanwhile, the rear section can still translate under the action of the electric braking force, so that the electric power transmission unit is not hindered from transmitting the electric braking force to the braking force output unit, and the braking operation is implemented.
Description
Technical Field
The utility model relates to a vehicle helping hand stopper especially relates to a vehicle brake that still can automatic emergency braking when the brake pedal is blocked.
Background
A conventional power-assisted brake for vehicles includes a housing, a pedal force input unit, an electromotive force generating unit, a supporting and guiding unit, a returning unit, a pedal force transmitting unit, an electromotive force transmitting unit, and a braking force output unit; the pedal force input unit is used for receiving pedal force from the outside; an electromotive force generating unit for generating electromotive force; the supporting and guiding unit is used for supporting the pedal force transmission unit and the electric power transmission unit in the shell and ensuring that the pedal force transmission unit and the electric power transmission unit can only move along the axial direction; the resetting unit is used for resetting the pedal force transmission unit and the electric power transmission unit; the pedal force transmission unit is used for transmitting the pedal force to the braking force output unit; the electric power transmission unit is used for transmitting electric power to the braking force output unit; the braking force output unit is used for loading the pedal force output by the pedal force input unit and/or the electric power output by the electric power generation unit on the master cylinder.
At present, on the basis of the conventional vehicle power brake, a vehicle power brake with a retardation recognition function is designed, and the principle is that in an automatic emergency braking mode, when a brake pedal is blocked by a foreign object or a driver's foot accidentally protrudes into the bottom of the brake pedal to be clamped, a control part in an electrodynamic force generating unit recognizes that the brake pedal is blocked to stop generating electrodynamic force continuously to stop braking, so as to achieve the purposes of preventing a firm foreign object from damaging components of a brake system and preventing the driver's foot from being hurt, for example, the vehicle power brake disclosed in patent documents with publication numbers CN 109131270 a (see fig. 1 for structural principle) and CN 107949507a (see fig. 4 for structural principle).
However, the vehicle power brake described above carries a risk that when the vehicle power brake recognizes that the brake pedal is blocked, the vehicle power brake stops continuing to brake, and at an emergency, the vehicle may hit an obstacle ahead, and even cause injuries and deaths of pedestrians and/or people on the vehicle.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem that there is the potential safety hazard in the current vehicle helping hand stopper that has retardant recognition function, the utility model provides a but still automatic emergency braking's vehicle brake under the retardant condition.
The technical scheme of the utility model is that:
a vehicle brake which can still automatically brake in emergency in case of retardation comprises
The brake system comprises a shell, a pedal force input unit, an electric power generating unit, a supporting and guiding unit, a resetting unit, a pedal force transmission unit, an electric power transmission unit and a braking force output unit;
the pedal force transmission unit includes a piston;
it is characterized in that:
the piston comprises a front section and a rear section which are coaxially clamped;
the front and rear sections can be disengaged at the snap-in position under external force retardation only during automatic emergency braking.
Furthermore, the front section and the rear section are clamped with the spherical clamping head through claw-shaped clamping grooves.
The utility model discloses still provide another kind of vehicle brake that can still automatic emergency braking under the retardant condition, include
The brake system comprises a shell, a pedal force input unit, an electric power generating unit, a supporting and guiding unit, a resetting unit, a pedal force transmission unit, an electric power transmission unit and a braking force output unit;
the pedal force transmission unit includes a piston;
it is characterized in that:
the piston comprises a front section, a middle section and a rear section which are coaxially and sequentially clamped;
the front section and the middle section or the middle section and the rear section can be disengaged at the respective clamping joint under the external force retardation only during the automatic emergency braking.
Furthermore, the front section and the middle section and the rear section are respectively clamped with the spherical clamping head through claw-shaped clamping grooves.
Compared with the prior art, the utility model has the advantages that:
1. the utility model discloses design the piston (or refer to plunger) among the traditional vehicle helping hand stopper as by anterior segment and the coaxial joint of back end constitution two sections split type structures, under the automatic emergency braking mode, when there is the foreign matter or driver's foot stretches into the brake pedal bottom, the motion of anterior segment is obstructed to make anterior segment and back end throw off, avoid the anterior segment to continue the translation and lead to driver's foot to be pressed from both sides and hinder, or lead to the situation that braking system part is impaired because of firm foreign matter to take place; meanwhile, the rear section can still translate under the action of the electric braking force, so that the electric power transmission unit cannot be hindered from transmitting the electric braking force to the braking force output unit, the braking operation is implemented, and the potential safety hazard is avoided.
2. The utility model discloses design the piston (or refer to plunger) among the traditional vehicle helping hand stopper as by anterior segment, middle section and the coaxial joint of back end and constitute three-section split type structure, under the automatic emergency braking mode, when there is the foreign matter or driver's foot to stretch into the brake pedal bottom, the motion of anterior segment or middle section is obstructed to make anterior segment and middle section, or middle section and back end throw off, avoid the anterior segment to continue the translation and lead to driver's foot to be pressed from both sides and hinder, or lead to the impaired condition of braking system part to take place because of firm foreign matter; meanwhile, the rear section can still translate under the action of the electric braking force, so that the electric power transmission unit cannot be prevented from transmitting the electric braking force to the braking force output unit, the braking operation is implemented, and the potential safety hazard is avoided; meanwhile, the piston (or called plunger) is clamped at two positions, if one clamping position is clamped due to corrosion and the like and can not be separated, the clamping position can be separated from the other clamping position, and compared with a two-section split type design, the reliability of separation between the piston sections when the pedal is blocked is further improved.
3. The utility model discloses connect for the joint between each section of piston (or call plunger), do not have the idle stroke between each section of piston (or call plunger), during normal braking, the driver is when trampling brake pedal, and brake pedal feels better.
4. The utility model discloses connect for the joint between each section of piston (or call plunger), do not have the idle stroke between each section of piston (or call plunger), during automatic emergency braking, can the quick response driver interrupt automatic emergency braking's operation, satisfy the requirement that the country should have driver intervention performance to passenger car Automatic Emergency Braking System (AEBS).
5. When the utility model discloses well each section of piston (or refer to the plunger) is thrown off the back because of the retardation force production during automatic emergency braking, can disappear the back at the retardation force, through the artifical mode of exerting the footboard power, the joint once more is easily realized, need not maintenance or influence reuse.
6. The utility model discloses can make very little change to current vehicle helping hand stopper and can realize, the implementation cost is low.
Drawings
Fig. 1 is a schematic structural diagram of a first conventional vehicle power-assisted brake with a retardation recognition function.
Fig. 2 is a schematic structural diagram of a first improved vehicle brake capable of automatically and emergently braking in a retarding situation.
FIG. 3 is a schematic illustration of the vehicle brake piston of FIG. 2 after disengagement of the intermediate section from the rear section.
Fig. 4 is a schematic structural diagram of a second conventional power-assisted brake for a vehicle with a retardation recognition function.
Fig. 5 is a schematic structural diagram of a second improved vehicle brake capable of automatically and emergently braking in a retarding situation.
Fig. 6 is a schematic illustration of the vehicle brake plunger of fig. 5 after disengagement of the front and rear sections.
Detailed Description
The present invention will be further described with reference to the following specific examples.
Example 1:
fig. 1 shows a power-assisted brake for a vehicle disclosed in patent publication No. CN 109131270 a, which mainly includes a piston 10, an intermediate plate 12 having an elastic attachment 122, a transmission element 13, a main shaft 15, and a body 21.
Fig. 2 is a schematic structural principle diagram of the present embodiment, the present embodiment is based on the conventional vehicle power-assisted brake shown in fig. 1, and is characterized in that the piston 10 is designed to be a split structure, specifically, the piston is formed by coaxially arranging a front section 101, a middle section 103 and a rear section 102, a first ball chuck 1031 and a second ball chuck 1032 are respectively arranged at two ends of the middle section 103, a first claw-shaped slot 1011 is arranged at one end of the front section 101, a second claw-shaped slot 1021 is arranged at one end of the rear section 102, the front section 101 and the middle section 103 are in fit and clamping connection with the first ball chuck 1031 through the first claw-shaped slot 1011, the rear section 102 and the middle section 103 are in fit and clamping connection with the second ball chuck 1032, and only during automatic emergency braking, the front section 101 and the middle section 103 can be separated at the clamping position under the external force retardation, alternatively, the middle section 103 and the rear section 102 can be disengaged at the clamping position under the external force resistance (the state after the middle section and the rear section are disengaged is shown in fig. 3); meanwhile, the program mechanism for stopping braking when a brake is blocked in the vehicle power-assisted brake shown in fig. 1 is deleted.
The principle of the embodiment is as follows:
in the manual braking mode, the front section 101 of the piston 10 pushes the middle section 103 and the rear section 102 forward, and then the rear section 102 outputs the pedal braking force.
Under the condition of automatic emergency braking, when an active radar of a vehicle detects that a front obstacle is within a braking threshold value, a braking signal is sent to a control unit (the control unit is provided with an interface for receiving the braking signal) of a vehicle brake, a motor of the vehicle power-assisted brake generates electric braking force and transmits the electric braking force to a main shaft 15, the main shaft 15 is driven to translate along the braking direction, then an intermediate plate 12, a transmission element 13, a body 21, a rear section 102 of a piston, a middle section 103 of the piston and a front section 101 of the piston are sequentially driven to translate along the braking direction, and the electric braking force is not prevented from being transmitted to a braking force output unit by an electric power transmission unit; during this period, when there is a foreign object or the driver's foot is inserted into the bottom of the brake pedal, since the rear section 102 of the piston can be disengaged from the middle section 103 by the electric braking force, or the whole of the rear section 103 and the middle section 103 of the piston can be disengaged from the front section 101 under the action of electric braking force, and therefore, when foreign matter or the driver's foot is inserted into the bottom of the brake pedal, if the rear section 102 is separated from the middle section 103, the front section 101 and the middle section 103 do not continue to translate as a whole, and if the middle section 103 is disengaged from the front section 101, only the front section 101 does not continue to translate, thereby avoiding the foot of the driver from being pinched and injured due to the fact that the front section 101 drives the brake pedal to be pressed down, or the brake system components are damaged due to the strong foreign matters, the rear section 102 can still continue to translate, and the electric power transmission unit is not prevented from transmitting the electric braking force to the braking force output unit to implement braking.
Example 2:
fig. 4 shows a power-assisted brake for a vehicle disclosed in patent document No. CN 107949507a, which mainly includes a plunger 2, a drive base 21, an intermediate piston 4, an axial sleeve 51, a clip 52, a nut 6, an intermediate spring 8, and a stopper 81.
Fig. 5 is a schematic structural diagram of the present embodiment, and the present embodiment is a split structure designed on the basis of the conventional vehicle power-assisted brake shown in fig. 4, and specifically, the plunger 2 is formed by coaxially clamping a front section 201 and a rear section 202; one end of the front section 201 is provided with a spherical clamping head 203, and one end of the rear section 202 is provided with a claw-shaped clamping groove 204 for tightly holding the spherical clamping head; under the action of a certain force, the claw-shaped clamping groove 204 can be separated from the spherical clamping head 203 (the front section and the rear section are separated and then are in a state shown in fig. 6); meanwhile, the program mechanism for stopping braking at the time of retardation in the vehicle power-assisted brake shown in fig. 4 is deleted.
The principle of the embodiment is as follows:
in the manual braking mode, the front section 201 of the plunger 2 pushes the rear section 202 forward, and then the rear section 202 outputs the pedal braking force.
Under the condition of automatic emergency braking, when an active radar of a vehicle detects that a front obstacle is within a braking threshold value, a braking signal is sent to a control unit (the control unit is provided with an interface for receiving the braking signal) of a vehicle power-assisted brake, a motor of the vehicle power-assisted brake generates electric braking force and transmits the electric braking force to a nut 6 to drive the nut 6 to rotate, then an axial sleeve 51, a clamp 52, an intermediate piston 4, a driving base 21, a rear section 202 of a plunger and a front section 201 of the plunger are sequentially driven to translate along a braking direction, and the electric braking force is not prevented from being transmitted to a braking force output unit by the electric power transmission unit to implement braking; during the period, when foreign matters or feet of a driver extend into the bottom of the brake pedal, the rear section 102 of the plunger can be separated from the front section 101 under the action of the electric braking force, so that the front section 101 cannot be translated continuously to drive the brake pedal to be pressed down to cause the feet of the driver to be clamped, or the situation that the components of the brake system are damaged due to the firm foreign matters occurs, and the rear section 102 can still be translated continuously without preventing the electric braking force from being transmitted to the braking force output unit by the electric power transmission unit to implement braking.
Claims (4)
1. A vehicle brake which can still automatically brake in emergency in case of retardation comprises
The brake system comprises a shell, a pedal force input unit, an electric power generating unit, a supporting and guiding unit, a resetting unit, a pedal force transmission unit, an electric power transmission unit and a braking force output unit;
the pedal force transmission unit includes a piston;
the method is characterized in that:
the piston comprises a front section and a rear section which are coaxially clamped;
the front and rear sections can be disengaged at the snap-in position under external force retardation only during automatic emergency braking.
2. The vehicle brake that automatically brakes in an emergency, but also brakes in a retarding situation, according to claim 1, characterized by: the front section and the rear section are clamped with the spherical clamping head through claw-shaped clamping grooves.
3. A vehicle brake which can still automatically brake in emergency in case of retardation comprises
The brake system comprises a shell, a pedal force input unit, an electric power generating unit, a supporting and guiding unit, a resetting unit, a pedal force transmission unit, an electric power transmission unit and a braking force output unit;
the pedal force transmission unit includes a piston;
the method is characterized in that:
the piston comprises a front section, a middle section and a rear section which are coaxially and sequentially clamped;
the front section and the middle section or the middle section and the rear section can be disengaged at the respective clamping joint under the external force retardation only during the automatic emergency braking.
4. The vehicle brake that automatically brakes in an emergency, but also brakes in a retarding situation, of claim 3, wherein: the front section and the middle section and the rear section are respectively clamped with the spherical clamping head through claw-shaped clamping grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922435027.4U CN211308537U (en) | 2019-12-30 | 2019-12-30 | Vehicle brake capable of automatically and emergently braking under retardation condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922435027.4U CN211308537U (en) | 2019-12-30 | 2019-12-30 | Vehicle brake capable of automatically and emergently braking under retardation condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211308537U true CN211308537U (en) | 2020-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922435027.4U Active CN211308537U (en) | 2019-12-30 | 2019-12-30 | Vehicle brake capable of automatically and emergently braking under retardation condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211308537U (en) |
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2019
- 2019-12-30 CN CN201922435027.4U patent/CN211308537U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: The utility model relates to a vehicle brake capable of automatic emergency braking in case of blocking Effective date of registration: 20210622 Granted publication date: 20200821 Pledgee: Bank of Xi'an Limited by Share Ltd. South Main Street subbranch Pledgor: SHAANXI GUOLI INFORMATION TECHNOLOGY Co.,Ltd. Registration number: Y2021610000157 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220613 Granted publication date: 20200821 Pledgee: Bank of Xi'an Limited by Share Ltd. South Main Street subbranch Pledgor: SHAANXI GUOLI INFORMATION TECHNOLOGY Co.,Ltd. Registration number: Y2021610000157 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A kind of vehicle brake that can automatically and urgently brake in case of blocking Effective date of registration: 20220621 Granted publication date: 20200821 Pledgee: Bank of Xi'an Limited by Share Ltd. South Main Street subbranch Pledgor: SHAANXI GUOLI INFORMATION TECHNOLOGY Co.,Ltd. Registration number: Y2022610000323 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230626 Granted publication date: 20200821 Pledgee: Bank of Xi'an Limited by Share Ltd. South Main Street subbranch Pledgor: SHAANXI GUOLI INFORMATION TECHNOLOGY Co.,Ltd. Registration number: Y2022610000323 |