GB2620102A - Linear actuator LAC with eccentric piston - Google Patents
Linear actuator LAC with eccentric piston Download PDFInfo
- Publication number
- GB2620102A GB2620102A GB2203978.8A GB202203978A GB2620102A GB 2620102 A GB2620102 A GB 2620102A GB 202203978 A GB202203978 A GB 202203978A GB 2620102 A GB2620102 A GB 2620102A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- nut
- spindle
- longitudinal axis
- electrical motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 25
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
- B60T13/745—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on a hydraulic system, e.g. a master cylinder
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Transmission Devices (AREA)
Abstract
A hydraulic electronic control unit HECU 100 comprising a linear actuator LAC 10, a valve support 13 and a sealing gasket 12. The linear actuator comprises a ball screw drive 14 including a spindle 17 and nut 18, and a piston 19 sliding in a piston housing 20. The piston axis is offset from the spindle axis. In a first example (figure 4a), a cylindrical pipe 15 is connected to the nut 18 and the piston 19 connected to the pipe 15, with one nut end 18.2 having its axis aligned with the spindle while the other nut end 18.1 is aligned with the piston. When the spindle is rotated by motor 11 the eccentricity of the nut prevents rotation of the nut and pipe. In a second example (see e.g. figure 8a, 9a), the spindle is eccentrically connected to the piston and the nut is rotated by the motor. When the nut rotates the eccentricity of the piston relative to the spindle prevents rotation of the spindle.
Description
Description
Linear actuator LAC with eccentric piston The invention relates to electronic braking control systems. In particular, it relates to a new linear actuator having a new eccentric linear actuator LAC.
In the prior art, a torque support is used in order to stop the rotation of a Ball Screw Drive BSD profile pipe and to withstand the force caused by the movement of the BSD, which is transferred to a motor housing. Depending on the construction kit, the torque varies between 3.7 Nm and 5.6 Nm.
In Fig. la and lb it is shown a HECU comprising a Linear actuator LAC used in the state of the art.
A BLDG motor 1 is mounted onto a hydraulic valve support 3. A sealing gasket 2 with silicone over molded is used to seal the interface between the motor 1 and the valve support. When the BLDC motor receives current, it creates the output torque to rotate the Ball Screw Drive BSD 4, pushing axially a BSD nut 8 on which is mounted the profile pipe 5 and the piston 9. A torque support 6 is used in order to prevent the rotation of the profile pipe 5. The axial movement of the piston creates the necessary pressure into the system.
The torque support 6 is mounted in the sealing gasket 2.
In Fig. 2 it is shown the linear actuator LAC from the state of the art, which comprises the screw 7, the nut 8, the profile pipe 5 and the piston 9.
The Fig.3 illustrates the nut 8 according to the state of the art.
Some of the disadvantages of the prior art are the following: - The motor torque is applied on the sealing gasket through the torque support which further leads to the following disadvantages: - The production cost of the sealing gasket is high because of its complexity and of the high material quantity necessary to take over the torque of the motor.
- The HECU assembly is complex and bulky because of the number of parts.
- The position sensor(s) of the motor is mounted on the sealing gasket which is a difficult to reach place.
In order to avoid the disadvantages of the prior art, present invention has the objective of transferring the torque from the motor to the valve support such that to eliminate the need of the torque support mounted in the sealing gasket.
In order to overcome the disadvantages of prior art, in a first aspect of the invention it is presented a first hydraulic electronic control unit HECU comprising: a first linear actuator LAC arranged to transform the rotation movement from a first hollow electrical motor into linear movement of a first piston and comprising: a first ball screw drive arranged inside the first hollow electrical motor and connected to the first hollow electrical motor by a ball screw drive interface, the first ball screw drive comprising a first spindle and a first nut, the first spindle being arranged to rotate around a second longitudinal axis under the first hollow electrical motor action, the first nut being mounted on the first spindle and allowed to translate on the first spindle, having a first nut first end and a first nut second end, the first nut first end being connected to the first piston through a cylindrical pipe, the first nut first end and the cylindrical pipe having a same first longitudinal axis, the first nut second end facing the ball screw drive interface, the first nut second end having the same second longitudinal axis with the first spindle and with the first rotor tube of the first hollow electrical motor, the cylindrical pipe comprising a first cylindrical pipe end and a second cylindrical pipe end, the first cylindrical pipe end being connected to the first piston and the second cylindrical pipe end being connected to the first nut first end, the first piston sliding inside a first piston housing, the first piston having the same first longitudinal axis with the cylindrical pipe and with the first nut first end, the piston first housing arranged to pass through a first piston housing hole of a first valve support, the first piston housing having the same first longitudinal axis with the first piston, the first valve support comprising the first piston housing hole, the first piston housing hole having the same first longitudinal axis with the first piston housing the first longitudinal axis and the second longitudinal axis having an offset from each other, a first sealing gasket arranged between the first hollow electrical motor and the first valve support, wherein the first nut is arranged such that at the rotation of the first spindle, due to the eccentricity of the first nut first end from the first rotor tube, the rotation of the first nut solidarily connected with the cylindrical pipe is prevented.
In a second aspect of the invention, it is presented a second hydraulic electronic control unit HECU comprising: a second linear actuator LAC arranged to transform the rotation movement from a second hollow electrical motor into linear movement of a second piston and comprising: a second ball screw drive arranged inside the second hollow electrical motor, comprising a second spindle and a second nut, the second spindle having a same third longitudinal axis with the second nut and with the second rotor tube of the second hollow electrical motor, comprising a second spindle first end facing the distal end of the second rotor tube opposite to the second piston and a second spindle second end eccentrically connected to the second piston, and being arranged to translate inside the second rotor tube due to the rotation of the second nut, the second nut having a second nut inner surface facing the second spindle and a second nut outer surface firmly fixed on the second rotor tube, being arranged to rotate on the second spindle together with the second rotor tube, the second piston sliding inside a second piston housing, the second piston having a fourth longitudinal axis, the second piston housing arranged to pass through a second piston housing hole of a second valve support, the second piston housing having the same fourth longitudinal axis with the second piston, the second valve support comprising the second piston housing hole, the second piston housing hole having the same fourth longitudinal axis with the second piston housing, the third longitudinal axis and the fourth longitudinal axis having an offset from each other, a second sealing gasket arranged between the second hollow electrical motor and the second valve support, wherein the second the spindle is arranged such that at the rotation of the second rotor tube together with the second nut, due to the eccentricity of the second piston from the second spindle, the rotation of the second spindle is prevented.
Both hydraulic electronic control unit HECU according to claim 1 and hydraulic electronic control unit HECU according to claim 2 of the invention solve this problem by providing, each of them, a linear actuator LAC having the respective piston eccentric to the respective spindle, which has the effect of blocking the rotation of the respective piston, allowing to remove the torque support and to transfer the motor torque to the valve support.
The advantages of the invention are the following: In contrast to the shape of the linear actuator LAC of the prior art, where the piston and the spindle are coaxial, the linear actuators of the invention have the respective piston eccentric to the respective spindle which has the effect of blocking the rotation of the respective piston, allowing to remove the torque support and to transfer the motor torque to the valve support.
By changing the shape of the nut and of the profile pipe, the torque support will be removed. The lower number of pieces will allow the reduction of the costs. As a result of removal of the torque support, a simpler sealing and a cylinder pipe will be used, which is leading to a cost reduction.
- The new configuration of the linear actuators of the invention is less complex and less bulky than the configuration of the linear actuators of prior art, leading to reducing the complexity of the HECU assembly.
- The new configuration of the linear actuators of the invention allows mounting of the position sensor(s) of the motor directly on the valve support, which facilitates the access to said sensor(s).
Further special features and advantages of the present invention can be taken from the following description of an advantageous embodiment by way of the accompanying drawings.
Figures The invention will be hereafter described with reference to the drawings where: Fig. la illustrates an exploded perspective section view of the hydraulic electronic
control unit HECU according to the prior art,
Fig. lb illustrates a longitudinal section view of the hydraulic electronic control unit HECU according to the prior art, Fig. 2 illustrates a longitudinal section view of the linear actuator LAC according to the prior art, Fig. 3 illustrates a perspective view of the nut 8 according to the prior art, Fig. 4a illustrates a longitudinal section view of the first hydraulic electronic control unit HECU 100 according to the invention, Fig. 4b illustrates a front view of the first linear actuator LAC 10 mounted inside the first hollow electrical motor 11 according to the invention, Fig. 5a illustrates a longitudinal section view of the first linear actuator LAC 10 according to the invention, Fig. 5b illustrates a perspective view of the first linear actuator LAC 10 according to the invention, Fig. Sc illustrates a front view of the first linear actuator LAC 10 according to the invention, Fig. 6 illustrates a perspective view of the first nut 18 according to the invention, Fig. 7 illustrates a longitudinal section view of the first valve support 13 according to the invention, Fig. 8a illustrates a longitudinal section view of the second hydraulic electronic control unit HECU 300 according to the invention, Fig. 8b illustrates a longitudinal section view of the second hydraulic electronic control unit HECU 300 of Fig. 8a rotated by 90°, according to the invention, Fig. 9a illustrates a side view of the second linear actuator LAC 30 according to the invention, Fig. 9b illustrates a side view of the second linear actuator LAC 30 of Fig. 9a rotated by 180°, according to the invention, Fig. 9c illustrates a perspective view of the second linear actuator LAC 30 according to the invention, Fig. 10 illustrates a perspective view of the second nut 38 according to the invention, Fig.11 illustrates a longitudinal section view of the second valve support 33 according to the invention.
Detailed description
The problem of the invention is solved by providing two linear actuators LAC, namely the first linear actuator LAC 10 and the second linear actuator LAC 30. Each of the two linear actuators LAC is described below with its respective 10 components.
With reference to Figs. 4a and 4b, the inventors conceived in a first aspect of the invention a first hydraulic electronic control unit HECU 100 comprising a first linear actuator LAC 10, a first valve support 13 and a first sealing gasket 12.
With reference to Figs. 5a, 5b and Sc, the first linear actuator LAC 10 is arranged to transform the rotation movement from a first hollow electrical motor 11 into linear movement of a first piston 19. The first linear actuator LAC 10 comprises the first ball screw drive 14, the cylindrical pipe 15, the first piston 19 and the first piston housing 20.
The first ball screw drive 14 is arranged inside the first hollow electrical motor 11 and it is connected to the first hollow electrical motor 11 by a ball screw drive interface 22. The first ball screw drive 14 comprises a first spindle 17 and a first nut 18. The first spindle 17 is arranged to rotate around a second longitudinal axis a2 under the first hollow electrical motor 11 action. The first nut 18 is mounted on the first spindle 17 and it is allowed to translate on the first spindle 17.
With reference to Fig. 6, the first nut 18 has a first nut first end 18.1 and a first nut 30 second end 18.2.
With reference to Figs. 5a and 5b, the first nut first end 18.1 is connected to the first piston 19 through a cylindrical pipe 15, the first nut first end 18.1 and the cylindrical pipe 15 having the same first longitudinal axis al. The first nut second end 18.2 is facing the ball screw drive interface 22, the first nut second end 18.2 having the same second longitudinal axis a2 with the first spindle 17 and with the first rotor tube 11.1 of the first hollow electrical motor 11. The cylindrical pipe 15 comprises a first cylindrical pipe end 15.1 and a second cylindrical pipe end 15.2. The first cylindrical pipe end 15.1 is connected to the first piston 19 and the second cylindrical pipe end 15.2 is connected to the first nut first end 18.1. By changing the shape of the nut 8 and by replacing the profile pipe 5 of the prior art with the cylindrical pipe 15 of the invention, the torque support 6 of the prior art is not needed any longer for preventing the rotation of the first nut 18. The lower number of pieces will allow the reduction of the costs. As a result of removal of the torque support, a simpler sealing and said cylinder pipe will be used, which is also leading to a cost reduction.
The first piston 19 is sliding inside the first piston housing 20. The first piston 19 has the same first longitudinal axis al with the first nut first end 18.1 and with the cylindrical pipe 15. The first piston housing 20 is arranged to pass through a first piston housing hole 21 of the first valve support 13. The first piston housing 20 and the first piston 19 have the same first longitudinal axis al. With reference to Fig. 7, the first valve support 13 comprises the first piston housing hole 21. In order to accommodate the first piston housing, the position of the first piston housing hole 21 is modified from the prior art, the first piston housing hole 21 having the same first longitudinal axis al with the first piston housing 20. The first longitudinal axis al and the second longitudinal axis a2 have an offset from each other. In working position, the first longitudinal axis al of the first piston housing hole 21 is horizontally displaced from the prior art with the value of the offset, namely with the distance between the first longitudinal al and the second longitudinal a2. The first sealing gasket 12 is arranged between the first hollow electrical motor 11 and the first valve support 13.
Changing the shape of the linear actuator LAC of the prior art (where the piston and the spindle are coaxial) with the eccentric assembly of the first piston 19 and first spindle 17 of the invention will block the rotation of the cylindrical pipe and piston, allowing to remove the torque support and to have a simpler design for the sealing gasket. While in the state of the art the motor torque is applied on the sealing gasket, in the first aspect of the invention the torque is transferred to the valve support.
In the first aspect of the invention, due to the offset between the first longitudinal axis al and the second longitudinal axis a2, the first piston 19 is mounted eccentric from the first spindle 17. In the first aspect of the invention, the first nut 18 is arranged such that, at the rotation of the first spindle 17, due to the eccentricity of the first nut first end 18.1 from the first rotor tube 11.1, the rotation of the first nut 18 solidarily connected with the cylindrical pipe 15 is prevented. Due to the eccentricity of the first nut second end 18.2 from the first piston housing hole 21, when the first piston 19 reaches the distal end of the first piston housing 20, the first nut second end 18.2 is arranged to stop on the first valve support 13.
According to a second aspect of the invention, as illustrated in Fig. 8a and 8b, there is provided second hydraulic electronic control unit HECU 300 comprising a second linear actuator LAC 30, a second valve support 33 and a second sealing gasket 32.
With reference to Figs. 9a, 9b and 9c, the second linear actuator LAC 30 is arranged to transform the rotation movement from a second hollow electrical motor 31 into linear movement of a second piston 39 and comprises the second ball screw drive 34, the second valve support 33 and the second sealing gasket 32. The second ball screw drive 34 is arranged inside the second hollow electrical motor 31. The second ball screw drive 34 comprises a second spindle 37 and a second nut 38. The second spindle 37 has the same third longitudinal axis a3 with the second nut 38 and with the second rotor tube 31.1 of the second hollow electrical motor 31. The second spindle 37 comprises a second spindle first end 37.1 facing the distal end of the second rotor tube 31.1 opposite to the second piston 39 and a second spindle second end 37.2 eccentrically connected to the second piston 39. The second spindle 37 is arranged to translate inside the second rotor tube 31.1 due to the rotation of the second nut 38.
With reference to Fig. 10, the second nut 38 has a second nut inner surface 38.1 facing the second spindle 37 and a second nut outer surface 38.2 firmly fixed on the second rotor tube 31.1. The second nut 38 is arranged to rotate on the second spindle 37 together with the second rotor tube 31.1. By changing the shape of the nut 8, the torque support 6 of the prior art is not needed any longer for preventing the rotation of the second nut 38. The profile pipe and the interface between the rotor tube and the spindle (namely the coin interface) are removed. The lower number of pieces will allow the reduction of the costs. As a result of removal of the torque support, a simpler sealing is used, which is also leading to a cost reduction.
The second piston 39 is sliding inside the second piston housing 40, the second piston 39 having a fourth longitudinal axis a4. The second piston housing 40 is arranged to pass through the second piston housing hole 41 of the second valve support 33, the second piston housing 40 having the same fourth longitudinal axis a4 with the second piston 39.
With reference to Fig. 11, the second valve support 33 comprises the second piston housing hole 41. The second piston housing hole 41 and the second piston housing 40 have the same fourth longitudinal axis a4. In order to accommodate the second piston housing 40, the position of the second piston housing hole 41 is modified from
the prior art.
The third longitudinal axis a3 and the fourth longitudinal axis a4 have an offset from each other. In working position, the fourth longitudinal axis a4 of the second piston housing hole 41 is horizontally displaced from the prior art with the value of the offset, namely with the distance between the third longitudinal axis a3 and the fourth longitudinal axis a4.
The second sealing gasket 32 is arranged between the second hollow electrical 30 motor 31 and the second valve support 33.
Changing the shape of the linear actuator LAC of the prior art (where the piston and the spindle are coaxial) with the eccentric assembly of the second piston 39 and second spindle 37 of the invention will block the rotation of the piston, allowing to remove the torque support and to have a simpler design for the sealing gasket.
While in the state of the art the motor torque is applied on the sealing gasket, in the second aspect of the invention the torque is transferred to the valve support.
In the second aspect of the invention, the second spindle 37 is arranged such that, at the rotation of the second rotor tube 31.1 together with the second nut 38, due to the eccentricity of the second piston 39 from the second spindle 37, the rotation of the second spindle 37 is prevented.
According to a first preferred embodiment, there is provided a braking system comprising the first hydraulic electronic control unit H ECU 100 according to the first aspect of the invention. The braking system according to the first preferred embodiment has a lower number of components, meaning a lower price and a longer lifetime.
According to a second preferred embodiment, there is provided a braking system comprising the second hydraulic electronic control unit HECU 300 according to the second aspect of the invention. The braking system according to the second preferred embodiment has a lower number of components, meaning a lower price and a longer lifetime.
While certain embodiments of the present invention have been described in detail, the person skilled in the art will recognize various alternative designs and embodiments for practicing the invention as defined by the following claims.
List of reference signs 1 BLDC motor 2 plastic gasket 3 valve support 4 ball screw drive profile pipe 6 torque support 7 spindle 8 nut 9 piston first hydraulic electronic control unit HECU first linear actuator LAC 11 first hollow electrical motor 11.1 first rotor tube 12 first sealing gasket 13 first valve support 14 first ball screw drive cylindrical pipe 15.1 first cylindrical pipe end 15.2 second cylindrical pipe end 17 first spindle 18 first nut 18.1 first nut first end 18.2 first nut second end 19 first piston first piston housing 21 first piston housing hole 22 ball screw drive interface al first longitudinal axis al a2 second longitudinal axis a2 300 second hydraulic electronic control unit HECU second linear actuator LAC 31 second hollow electrical motor 31.1 second rotor tube 32 second sealing gasket 33 second valve support 34 second ball screw drive 37 second spindle 37.1 second spindle first end 37.2 second spindle second end 38 second nut 38.1 second nut inner surface 38.2 second nut outer surface 39 second piston second piston housing 41 second piston housing hole a3 third longitudinal axis a3 a4 fourth longitudinal axis a4
Claims (4)
- Patent claims 1. A first hydraulic electronic control unit HECU (100) comprising a first linear actuator LAC (10) arranged to transform the rotation movement from a first hollow electrical motor (11) into linear movement of a first piston (19), the first linear actuator comprising: a first ball screw drive (14) arranged inside the first hollow electrical motor (11) and connected to the first hollow electrical motor (11) by a ball screw drive interface (22), the first ball screw drive (14) comprising a first spindle (17) and a first nut (18), the first spindle (17) being arranged to rotate around a second longitudinal axis a2 under the first hollow electrical motor (11) action, the first nut (18) being mounted on the first spindle (17) and allowed to translate on the first spindle (17), having a first nut first end (18.1) and a first nut second end (18.2), the first nut first end (18.1) being connected to the first piston (19) through a cylindrical pipe (15), the first nut first end (18.1) and the cylindrical pipe (15) having a same first longitudinal axis al, the first nut second end (18.2) facing the ball screw drive interface (22), the first nut second end (18.2) having the same second longitudinal axis a2 with the first spindle (17) and with the first rotor tube (11.1) of the first hollow electrical motor (11), the cylindrical pipe (15) comprising a first cylindrical pipe end (15.1) and a second cylindrical pipe end (15.2), the first cylindrical pipe end (15.1) being connected to the first piston (19) and the second cylindrical pipe end (15.2) being connected to the first nut first end (18.1), the first piston (19) sliding inside a first piston housing (20), the first piston (19) having the same first longitudinal axis al with the cylindrical pipe (15) and with the first nut first end (18.1), the piston first housing (20) arranged to pass through a first piston housing hole (21) of a first valve support (13), the first piston housing (20) having the same first longitudinal axis al with the first piston (19), the first valve support (13) comprising the first piston housing hole (21), the first piston housing hole (21) having the same first longitudinal axis al with the first piston housing (20), the first longitudinal axis al and the second longitudinal axis a2 having an offset from each other, a first sealing gasket (12) arranged between the first hollow electrical motor (11) and the first valve support (13), wherein the first nut (18) is arranged such that: at the rotation of the first spindle (17), due to the eccentricity of the first nut first end (18.1) from the first rotor tube (11.1), the rotation of the first nut (18) solidarily connected with the cylindrical pipe (15) is prevented.
- 2. A second hydraulic electronic control unit HECU (300) comprising a second linear actuator LAC (30) arranged to transform the rotation movement from a second hollow electrical motor (31) into linear movement of a second piston (39) and comprising: a second ball screw drive (34) arranged inside the second hollow electrical motor (31), comprising a second spindle (37) and a second nut (38), the second spindle (37) having a same third longitudinal axis a3 with the second nut (38) and with the second rotor tube (31.1) of the second hollow electrical motor (31), the second spindle comprising a second spindle first end (37.1) facing the distal end of the second rotor tube (31.1) opposite to the second piston (39) and a second spindle second end (37.2) eccentrically connected to the second piston (39), and being arranged to translate inside the second rotor tube (31.1) due to the rotation of the second nut (38), the second nut (38) having a second nut inner surface (38.1) facing the second spindle (37) and a second nut outer surface (38.2) firmly fixed on the second rotor tube (31.1) and being arranged to rotate on the second spindle (37) together with the second rotor tube (31.1),the second piston (39) sliding inside a second piston housing (40), the second piston (39) having a fourth longitudinal axis a4, the second piston housing (40) arranged to pass through a second piston housing hole (41) of a second valve support (33), the second piston housing (40) having the same fourth longitudinal axis a4 with the second piston (39), the second valve support (33) comprising the second piston housing hole (41), the second piston housing hole (41) having the same fourth longitudinal axis a4 with the second piston housing (40), the third longitudinal axis a3 and the fourth longitudinal axis a4 having an offset from each other, a second sealing gasket (32) arranged between the second hollow electrical motor (31) and the second valve support (33), wherein second the spindle (37) is arranged such that: at the rotation of the second rotor tube (31.1) together with the second nut (38), due to the eccentricity of the second piston (39) from the second spindle (37), the rotation of the second spindle (37) is prevented.
- 3. Braking system comprising the first hydraulic electronic control unit HECU (100) according to claim 1.
- 4. Braking system comprising the second hydraulic electronic control unit HECU (300) according to claim 2.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP22465518 | 2022-03-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB202203978D0 GB202203978D0 (en) | 2022-05-04 |
| GB2620102A true GB2620102A (en) | 2024-01-03 |
Family
ID=81308416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2203978.8A Pending GB2620102A (en) | 2022-03-17 | 2022-03-22 | Linear actuator LAC with eccentric piston |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2620102A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011136495A (en) * | 2009-12-28 | 2011-07-14 | Kobe Steel Ltd | Motor-driven cylinder and center mechanism of tire vulcanizer equipped with motor-driven cylinder |
| JP2017036776A (en) * | 2015-08-07 | 2017-02-16 | 本田技研工業株式会社 | Electric parking brake |
| WO2020222582A1 (en) * | 2019-05-02 | 2020-11-05 | 주식회사 만도 | Hydraulic pressure supply device |
-
2022
- 2022-03-22 GB GB2203978.8A patent/GB2620102A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011136495A (en) * | 2009-12-28 | 2011-07-14 | Kobe Steel Ltd | Motor-driven cylinder and center mechanism of tire vulcanizer equipped with motor-driven cylinder |
| JP2017036776A (en) * | 2015-08-07 | 2017-02-16 | 本田技研工業株式会社 | Electric parking brake |
| WO2020222582A1 (en) * | 2019-05-02 | 2020-11-05 | 주식회사 만도 | Hydraulic pressure supply device |
Also Published As
| Publication number | Publication date |
|---|---|
| GB202203978D0 (en) | 2022-05-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| COOA | Change in applicant's name or ownership of the application |
Owner name: CONTINENTAL AUTOMOTIVE TECHNOLOGIES GMBH Free format text: FORMER OWNER: CONTINENTAL AUTOMOTIVE GMBH |