CN113548026A

CN113548026A - Device for active braking of vehicle

Info

Publication number: CN113548026A
Application number: CN202110969166.4A
Authority: CN
Inventors: 魏凌涛; 李帅; 李晨风
Original assignee: Beijing Yingchuang Huizhi Technology Co ltd
Current assignee: Beijing Yingchuang Huizhi Technology Co ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2021-10-26

Abstract

The invention discloses a device for vehicle active braking, which comprises a lead screw, wherein a piston is sleeved at the left end of the lead screw in a threaded manner, a second gear is fixedly installed at the right end of the lead screw, the outer surface of the second gear is in meshed connection with a first gear, a motor input shaft is fixedly installed in the middle of the right side surface of the first gear, a third gear is sleeved on the outer surface of the first gear in a meshed manner, and a hydraulic cylinder is movably sleeved on the outer surface of the piston. According to the invention, through the meshing connection between the second gear and the first gear and the meshing connection among the second gear, the first gear and the third gear, the first gear can drive the second gear or the motor input shaft to rotate, so that the speed reduction effect is realized, and through the transmission of the output shaft of the motor body and the arrangement among the motor input shaft, the first gear and the second gear, the rotation of the output shaft of the motor body can be converted into the rotation of the screw rod, so that the purpose of piston translation is realized.

Description

Device for active braking of vehicle

Technical Field

The invention relates to the field of automobile braking, in particular to a device for actively braking a vehicle.

Background

The automobile brake is a brake technology for providing deceleration and stopping for an automobile in the running process of the automobile, a main cylinder of an automobile brake assembly is cylindrical and mainly comprises a piston cylinder, a piston and other components, the piston needs to move along the axial direction of the piston cylinder in order to generate brake pressure, liquid in the piston cylinder is removed, the arrangement of the brake assembly can ensure that the automobile provides a sufficient deceleration effect when the automobile needs to decelerate or stop, and the safety of the automobile in the running process is improved.

However, in the prior art, a motor, a worm gear, a lead screw nut and a master cylinder are generally used for generating braking pressure, a reduction gear and the lead screw nut are used for generating braking pressure, the main function of the braking measures is to convert the rotary motion of the motor into linear motion, and the braking measures are influenced by the selection of the master cylinder, the transmission ratio range of the device is limited, the size of the whole transmission mechanism is larger, the rotary motion of the motor is converted into the linear motion by using the scheme of the worm gear and the gear rack, but the structure of the mechanism is not compact enough, the functions are realized by adopting a planetary gear and a worm gear mechanism, a lead screw and the motor are coaxially arranged, the structure is compact, in the configuration, if the stroke of a piston needs to be increased, namely a large liquid storage amount is needed for a large-tonnage vehicle, therefore, a master cylinder with larger size is needed, and the increase of the stroke is an effective method for increasing the size, the length of the piston cylinder on the other side of the motor must be increased, which will further increase the total length of the product, making the area where the whole apparatus is installed too large.

Disclosure of Invention

The object of the present invention is to provide a device for active braking of a vehicle that solves the problems set forth in the background art mentioned above.

In order to achieve the purpose, the invention provides the following technical scheme: the hydraulic cylinder is sleeved on the outer surface of the piston, an equipment body is sleeved on the outer surface of the lead screw, a gear shell is sleeved on the outer surface of the third gear, a motor body is fixedly connected to the end portion of the right side of the motor input shaft, and the end portion of the motor input shaft is fixedly connected with the end portion of the left output shaft of the motor body.

Preferably, the outer surface of the second gear is provided with a second tooth groove, the outer surface of the first gear is provided with a first tooth groove, the inner surface of the third gear is provided with a third tooth groove, the size and the shape of the first tooth groove are matched with those of the second tooth groove, and the size and the shape of the first tooth groove are matched with those of the third tooth groove.

Preferably, the middle part of the left side surface of the screw rod is fixedly sleeved with the right end of the hydraulic cylinder, and the inside of the gear shell is wrapped with a first gear.

Preferably, the middle part of the left side surface of the third gear is fixedly connected with the right end of the screw rod, and the right side surface of the third gear is provided with an opening.

Preferably, the inside of the equipment body is provided with an electromagnetic valve and a hydraulic circuit.

Preferably, a gap is formed between the left side surface of the first gear and the left side surface of the inner cavity of the third gear, and the size of the gap is matched with the size of the friction force between the left side surface of the first gear and the left side surface of the inner cavity of the third gear.

Preferably, the left side surface of the gear shell is fixedly connected with the right side surface of the equipment body through a bolt.

Preferably, the number of the motor bodies is not less than two or more, and the motor bodies are arranged in parallel.

Preferably, the number of the first gears is matched with the number of the motor bodies, and the number of the motor input shafts is matched with the number of the motor bodies.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, through the meshing connection between the second gear and the first gear and the meshing connection among the second gear, the first gear and the third gear, the first gear can drive the second gear or the motor input shaft to rotate, so that the speed reduction effect is realized, and through the transmission of the output shaft of the motor body and the arrangement among the motor input shaft, the first gear and the second gear, the rotation of the output shaft of the motor body can be converted into the rotation of the lead screw, so that the purpose of translation of the piston is realized;

2. the first gear is arranged inside the third gear, so that the center distance between the first gear and the third gear is reduced, the size of the whole braking equipment can be reduced during assembly, the equipment can be used in a more compact arrangement condition, and the purpose of improving the space utilization rate is achieved;

3. the first gear is arranged in the third gear, and the mounting hole is reserved between the adjacent contact surfaces of the first gear and the third gear, so that the aims of avoiding the phenomenon that the first gear and the third gear are excessively abraded due to excessive friction generated when the first gear drives the third gear to rotate and reducing the service life of the assembly are fulfilled.

Drawings

FIG. 1 is a perspective view showing the overall construction of an apparatus for active braking of a vehicle according to the present invention;

FIG. 2 is a schematic illustration of a second gear assembly for active vehicle braking according to the present invention;

fig. 3 is a schematic diagram of a splicing structure of a third gear for vehicle active braking according to the invention.

In the figure: 1. a lead screw; 2. a piston; 3. a second gear; 4. a first gear; 5. a motor input shaft; 6. a third gear; 7. a hydraulic cylinder; 8. an apparatus body; 9. a gear housing; 10. the motor body.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: including lead screw 1, lead screw 1's left end screw thread has cup jointed piston 2, lead screw 1's right-hand member fixed mounting has second gear 3, the surface engagement of second gear 3 is connected with first gear 4, the middle part fixed mounting of the 4 right flank of first gear has motor input shaft 5, the surface engagement of first gear 4 has cup jointed third gear 6, pneumatic cylinder 7 has been cup jointed in the surface activity of piston 2, lead screw 1's surface fixed cover has connect equipment body 8, the surface fixed cover of third gear 6 has connect gear shell 9, the tip fixedly connected with motor body 10 on motor input shaft 5 right side, the tip of motor input shaft 5 and the tip fixed connection of motor body 10 left side output shaft.

Second tooth's socket has been seted up to second gear 3's surface, first tooth's socket has been seted up to first gear 4's surface, third tooth's socket has been seted up to third gear 6's internal surface, the size and the shape of first tooth's socket and the size and the shape looks adaptation of second tooth's socket, the size and the shape of first tooth's socket and the size and the shape looks adaptation of third tooth's socket, through first tooth's socket, the seting up of second tooth's socket and third tooth's socket, can let first gear 4 carry out the meshing with second gear 3 and third gear 6 respectively and be connected, make second gear 3 and third gear 6 choose for use according to the in-service use demand, can make the operation effect of whole equipment can not appear the difference.

The middle part of the left side surface of the screw rod 1 is fixedly connected with the right end of the hydraulic cylinder 7 in a sleeved mode, the inside of the gear shell 9 is wrapped by the first gear 4, the hydraulic cylinder 7 with different lengths or diameters can be replaced through the setting of the hydraulic cylinder 7 to change the use requirements of different areas, and the actual use length of the hydraulic cylinder 7 directly influences the assembly width of the whole equipment.

The middle part of the left side surface of the third gear 6 is fixedly connected with the right end of the lead screw 1, the right side surface of the third gear 6 is provided with an opening, the third gear 6 can be replaced and arranged with the second gear 3, the third gear 6 is arranged oppositely to the second gear 3, the center distance between the two components can be reduced when the first gear 4 is meshed and connected with the first gear, and the whole device can be more compact.

The inside of the equipment body 8 is provided with an electromagnetic valve and a hydraulic circuit, and the arrangement of the electromagnetic valve and the hydraulic circuit realizes the change of the flow direction of the liquid.

The left surface of first gear 4 and the separation have the space between the 6 inner chamber left surfaces of third gear, the size in space and the left surface of first gear 4 and the frictional force size looks adaptation between the left surface of the 6 inner chambers of third gear, through the setting in space, can let first gear 4 can not let the side that first gear 4 and third gear 6 are close when driving third gear 6 and rotate and contact, avoid the condition that the side that first gear 4 and third gear 6 are close produces the friction and causes the reduction of subassembly life-span.

Bolt fixed connection is passed through with the right flank of equipment body 8 to the left surface of gear shell 9, through the setting of gear shell 9, can be connected the effect that provides the protection to the meshing between second gear 3 and first gear 4 and the third gear 6, and the fixed mode of bolt also can adopt the form of riveting to fix the processing.

The quantity of motor body 10 sets up and is not less than two or more, and motor body 10 sets up the position and is parallel to each other, and motor body 10's setting can arrange on gear housing 9 and carry out parallel installation and arrange, all meshes between first gear 4 and the second gear 3, can realize motor body 10 each other for backup, or realize the big moment of torsion input of second gear 3 through two motor body 10 simultaneous workings.

The quantity of first gear 4 and the quantity looks adaptation of motor body 10, the quantity looks adaptation of motor input shaft 5 and the quantity of motor body 10, and the looks adaptation in quantity can let each subassembly play the effect of turning force transmission.

The working principle is as follows: when the hydraulic cylinder is used, the output shaft at the left end of the motor body 10 rotates to drive the motor input shaft 5 to rotate, the second gear 3 is meshed with the first gear 4 and the end part of the motor input shaft 5 is fixed with the side surface of the first gear 4, so that the first gear 4 can drive the second gear 3 to rotate, the rotating speed of the second gear 3 can be reduced through the difference of the modulus between the first tooth groove and the second tooth groove, and the screw rod 1 can rotate when the second gear 3 rotates, so that the piston 2 is driven to horizontally move in the hydraulic cylinder 7.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Device for active braking of a vehicle, comprising a lead screw (1), characterized in that: the left end of the screw rod (1) is in threaded sleeve connection with a piston (2), the right end of the screw rod (1) is fixedly provided with a second gear (3), the outer surface of the second gear (3) is engaged with a first gear (4), the middle part of the right side surface of the first gear (4) is fixedly provided with a motor input shaft (5), the outer surface of the first gear (4) is engaged and sleeved with a third gear (6), a hydraulic cylinder (7) is movably sleeved on the outer surface of the piston (2), an equipment body (8) is fixedly sleeved on the outer surface of the lead screw (1), a gear shell (9) is fixedly sleeved on the outer surface of the third gear (6), the end part on the right side of the motor input shaft (5) is fixedly connected with a motor body (10), the end part of the motor input shaft (5) is fixedly connected with the end part of the left output shaft of the motor body (10).

2. An apparatus for active braking of a vehicle according to claim 1, characterized in that: the outer surface of the second gear (3) is provided with a second tooth groove, the outer surface of the first gear (4) is provided with a first tooth groove, the inner surface of the third gear (6) is provided with a third tooth groove, the size and the shape of the first tooth groove are matched with those of the second tooth groove, and the size and the shape of the first tooth groove are matched with those of the third tooth groove.

3. An apparatus for active braking of a vehicle according to claim 1, characterized in that: the middle part of the left side surface of the lead screw (1) is fixedly sleeved with the right end of the hydraulic cylinder (7), and the inside of the gear shell (9) is wrapped with the first gear (4).

4. An apparatus for active braking of a vehicle according to claim 1, characterized in that: the middle part of the left side surface of the third gear (6) is fixedly connected with the right end of the screw rod (1), and the right side surface of the third gear (6) is provided with an opening.

5. An apparatus for active braking of a vehicle according to claim 1, characterized in that: an electromagnetic valve and a hydraulic circuit are arranged in the equipment body (8).

6. An apparatus for active braking of a vehicle according to claim 1, characterized in that: a gap is formed between the left side face of the first gear (4) and the left side face of the inner cavity of the third gear (6), and the size of the gap is matched with the size of friction force between the left side face of the first gear (4) and the left side face of the inner cavity of the third gear (6).

7. An apparatus for active braking of a vehicle according to claim 1, characterized in that: the left side surface of the gear shell (9) is fixedly connected with the right side surface of the equipment body (8) through bolts.

8. An apparatus for active braking of a vehicle according to claim 1, characterized in that: the number of the motor bodies (10) is not less than two or more, and the motor bodies (10) are arranged in parallel.

9. An apparatus for active braking of a vehicle according to claim 1, characterized in that: the number of the first gears (4) is matched with the number of the motor bodies (10), and the number of the motor input shafts (5) is matched with the number of the motor bodies (10).