Ball screw for a brake system

Abstract

The utility model discloses a ball screw for a braking system, which comprises a thread sleeve and a screw, the thread sleeve and the screw are respectively provided with a threaded channel, a plurality of balls are rotatably arranged in the threaded channels, the thread sleeve is rotatably connected, a reverser is arranged on the thread sleeve corresponding to the positions of the balls, and the reverser is connected with the screw. The threaded sleeve is provided with a flange in the length direction of the lead screw, a connecting spline is arranged on the flange, the lead screw is arranged in a hollow mode to form a connecting through hole, the reverser is provided with a guide groove used for being communicated with an adjacent threaded channel, the position, corresponding to the guide groove, of the reverser is provided with a lubricating window, and a grease storage device is inserted into the lubricating window. The structure is simple, the using effect is guaranteed, meanwhile, the balls are convenient to lubricate, and the good using effect is achieved.

Description

Technical Field

[0001] This utility model relates to a ball screw for a braking system. Background Technology

[0002] Ball screws play a crucial role in braking systems by converting the rotary motion of a motor into linear motion. They transmit power by the rolling of balls between the screw and the nut. When the motor drives the screw to rotate, the balls roll within their raceways, pushing the nut to move linearly along the screw, thus achieving precise control of components such as the brake piston. This rolling friction method significantly reduces friction, improves transmission efficiency, and makes the braking system respond faster. However, when existing ball screws are used in automotive braking systems, insufficient lubrication can easily lead to ball jamming, affecting the lifespan of the structure and hindering its long-term use. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a ball screw for a braking system. It has a simple structure, ensures performance while facilitating ball lubrication, and has excellent performance.

[0004] To achieve the above objectives, this utility model provides a ball screw for a braking system, comprising a threaded sleeve and a screw. The threaded sleeve and the screw are respectively provided with threaded channels, in which a plurality of balls are rotatably disposed. The threaded sleeve is rotatably connected to the ball screw. A reversing device is provided on the threaded sleeve corresponding to the ball positions. A retaining edge is provided on the threaded sleeve along the length of the screw, and a connecting spline is provided on the retaining edge. The screw is hollow and has a connecting through hole. The reversing device is provided with a guide groove for connecting adjacent threaded channels. A lubrication window is provided on the reversing device corresponding to the guide groove positions, and a grease reservoir is inserted into the lubrication window.

[0005] The beneficial effects of this design are as follows: In actual operation, the grease reservoir on the reversing device lubricates the balls passing through it. When the balls rotate at high speed in the threaded channel, significant friction occurs between them and the channel wall. This not only reduces transmission efficiency but may also accelerate component wear due to frictional heat. The grease reservoir continuously lubricates the balls, greatly reducing the friction between the balls and the channel, resulting in smoother operation of the entire structure. For example, in conditions of frequent starting and stopping of the braking system, smooth operation ensures rapid and precise braking response, improving the overall performance of the braking system. Furthermore, the grease reservoir can be replaced after a certain period, extending the service life of the overall structure. Simultaneously, the connection through-holes and other structures further contribute to overall weight reduction, decreasing the load on individual components, lowering the probability of failure, extending the equipment's lifespan, and reducing maintenance costs.

[0006] As a further feature of this invention, the grease reservoir is provided with a plug-in protrusion, which engages with the lubrication window threadedly. The reverser is provided with a positioning step corresponding to the position of the lubrication window, and the positioning step is provided with a number of protrusions at intervals.

[0007] The advantages of this design are as follows: The threaded connection between the protrusion on the grease reservoir and the lubrication window provides a tighter and more stable fit compared to ordinary connections. This effectively prevents the grease reservoir from loosening or falling off due to vibration or bumps during equipment operation, ensuring continuous and stable lubrication. The protrusion not only precisely aligns with the lubrication window but also easily pierces the grease reservoir's sealed opening with its sharp tip, simplifying the grease injection process without additional steps. Furthermore, the positioning step on the reversing device provides precise positioning for the grease reservoir, ensuring accurate installation. The spaced protrusions on the step, after the grease reservoir is installed, can moderately embed into its surface, not only providing auxiliary fixation but also partially disrupting the reservoir's local structure. This allows grease to flow more smoothly through the lubrication window into the reversing device under pressure, providing efficient and timely lubrication to the balls and comprehensively ensuring the stable operation of the braking system.

[0008] As a further feature of this invention, the protrusion is shaped like a leaf, narrow at both ends and wide in the middle, and the protrusion is arc-shaped.

[0009] The advantages of this design are as follows: The blade-like structure increases the contact area with the grease reservoir, allowing for more effective disruption of local structures when embedded. The arc-shaped design conforms to the grease flow direction; when grease flows out of the reservoir under pressure, the protrusions guide the grease along its arc-shaped surface, preventing grease scattering and concentrating it efficiently towards the lubrication window. This allows more grease to smoothly enter the reversing mechanism, providing more ample lubrication for the balls.

[0010] As a further feature of this invention, the two side walls of the reverser are respectively provided with snap-fit ​​protrusions for engaging in the threaded channel.

[0011] The beneficial effects of this design are as follows: When installing the reversing device, these locking protrusions can precisely engage with the threaded channels. This tight engagement greatly ensures the accuracy of the reversing device's positioning and installation, preventing displacement or shaking within the threaded channels. This ensures that the reversing device stably guides the balls to smoothly switch between different threaded channels, effectively guaranteeing the stable operation of the braking system.

[0012] As a further feature of this invention, the end of the lead screw is provided with a retaining ring groove, and an elastic retaining ring is fitted in the retaining ring groove.

[0013] The beneficial effect of this design is that, with this configuration, the balls rotate at high speed along the lead screw. Without effective protection, the balls can easily detach from the end of the lead screw due to various unexpected factors. However, the elastic retaining ring, with its own elastic deformation capability, is tightly locked in the retaining ring groove, constantly preventing the balls from detaching from the lead screw track, ensuring the safe and stable operation of the entire braking system, and greatly reducing the risk of malfunctions caused by ball detachment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0015] Figure 2 This is a cross-sectional structural diagram of an embodiment of the present utility model;

[0016] Figure 3 This is a schematic diagram of the inverter in an embodiment of the present invention. Detailed Implementation

[0017] This utility model provides an embodiment of a ball screw for a braking system, such as... Figures 1 to 3 As shown, the device includes a threaded sleeve 1 and a lead screw 2. The threaded sleeve 1 and the lead screw 2 are respectively provided with threaded channels. A plurality of balls 3 are rotatably arranged in the threaded channels. The threaded sleeve 1 is rotatably connected. A reversing device 4 is provided on the threaded sleeve 1 corresponding to the position of the balls 3. The threaded sleeve 1 is provided with a retaining edge 11 along the length direction of the lead screw 2. A connecting spline is provided on the retaining edge 11. The lead screw 2 is hollow and has a connecting through hole. The reversing device 4 is provided with a guide groove for connecting adjacent threaded channels. A lubrication window 41 is provided on the reversing device 4 corresponding to the position of the guide groove. A grease reservoir 5 is inserted into the lubrication window 41. The beneficial effects of this design are as follows: In actual operation, the grease reservoir 5 on the reverser 4 lubricates the balls 3 passing through it. When the balls 3 rotate at high speed in the threaded channel, significant friction occurs between them and the channel wall. This not only reduces transmission efficiency but may also lead to accelerated wear of components due to frictional heat. The grease reservoir 5 continuously lubricates the balls 3, greatly reducing the friction between them and the channel, resulting in smoother operation of the entire structure. For example, in conditions of frequent starting and stopping of the braking system, smooth operation ensures rapid and precise braking response, improving the overall performance of the braking system. Furthermore, the grease reservoir 5 can be replaced after a certain period, extending the service life of the overall structure. Simultaneously, through structures such as connecting through holes, overall weight reduction is achieved, reducing the load on various components, lowering the probability of failure, extending the equipment's service life, and reducing maintenance costs.

[0018] As a further feature of this embodiment, the grease reservoir 5 is provided with a plug-in protrusion, which threadedly engages with the lubrication window 41. The reverser 4 has a positioning step corresponding to the lubrication window 41, and the positioning step is provided with several protrusions 42 spaced apart. The advantages of this design are: the threaded engagement between the plug-in protrusion on the grease reservoir 5 and the lubrication window 41 provides a tighter and more stable connection compared to ordinary connections, effectively preventing the grease reservoir 5 from loosening or falling off due to vibration, bumps, or other factors during equipment operation, ensuring continuous and stable lubrication. The plug-in protrusion not only precisely engages with the lubrication window 41 but also easily pierces the closed opening of the grease reservoir 5 with its sharp tip, simplifying the grease injection process without additional steps. Furthermore, the positioning step on the reverser 4 provides precise positioning for the grease reservoir 5, ensuring the accuracy of its installation position. The protrusions 42, which are spaced apart on the step, can be appropriately embedded into the surface of the grease reservoir 5 after the grease reservoir 5 is installed in place. This not only plays an auxiliary role in fixing the grease reservoir 5, but also disrupts the local structure of the grease reservoir 5 to a certain extent, so that the grease can enter the reverser 4 more smoothly through the lubrication window 41 under pressure, providing efficient and timely lubrication for the ball bearings 3 and ensuring the stable operation of the braking system in all aspects.

[0019] As a further feature of this embodiment, the protrusions 42 are blade-shaped, narrow at both ends and wide in the middle, and are also arc-shaped. The advantages of this design are: the blade-shaped structure increases the contact area with the grease reservoir 5, allowing for more effective disruption of local structures when embedded in the reservoir 5. The arc-shaped design conforms to the grease flow direction; when grease flows out of the reservoir 5 under pressure, the protrusions 42 guide the grease along their arc-shaped surface, preventing grease from scattering and concentrating and efficiently guiding the grease towards the lubrication window 41, allowing more grease to smoothly enter the reverser 4, providing more sufficient lubrication for the balls 3.

[0020] As a further feature of this embodiment, the two side walls of the reverser 4 are respectively provided with engaging protrusions 43 for engaging in the threaded channels. The beneficial effect of this design is that, during the installation of the reverser 4, these engaging protrusions 43 can precisely engage in the threaded channels. This tight engagement greatly ensures the accuracy of the reverser 4's positioning and installation, preventing displacement or shaking within the threaded channels. This ensures that the reverser 4 stably guides the balls 3 smoothly between different threaded channels, effectively guaranteeing the stable operation of the braking system.

[0021] As a further feature of this embodiment, a retaining ring groove is provided at the end of the lead screw 2, and an elastic retaining ring is fitted into the retaining ring groove. The beneficial effect of this design is that, with this configuration, the ball bearing 3 rotates at high speed along the lead screw 2. Without effective protection, the ball bearing 3 could easily detach from the end of the lead screw 2 due to various unexpected factors. However, the elastic retaining ring, with its own elastic deformation capability, is tightly secured within the retaining ring groove, constantly preventing the ball bearing 3 from detaching from the lead screw 2 track, ensuring the safe and stable operation of the entire braking system, and greatly reducing the risk of malfunction caused by the ball bearing 3 detaching.

[0022] The above examples are merely one preferred embodiment of this utility model. Ordinary variations and substitutions made by those skilled in the art within the scope of this utility model's technical solution are all included within the protection scope of this utility model.

Claims

1. A ball screw for a braking system, comprising a threaded sleeve and a screw, wherein the threaded sleeve and the screw are respectively provided with threaded channels, a plurality of balls are rotatably disposed in the threaded channels, the threaded sleeve is rotatably connected, and a reversing device is provided on the threaded sleeve corresponding to the position of the balls, characterized in that: The threaded sleeve is provided with a retaining edge along the length of the lead screw, and a connecting spline is provided on the retaining edge. The lead screw is hollow and has a connecting through hole. The reverser is provided with a guide groove for connecting adjacent threaded channels. A lubrication window is provided on the reverser corresponding to the guide groove position, and a grease reservoir is inserted into the lubrication window.

2. The ball screw for a braking system according to claim 1, characterized in that: The grease reservoir is provided with a plug-in protrusion, which engages with the lubrication window threadedly. The reverser is provided with a positioning step corresponding to the position of the lubrication window, and the positioning step is provided with several protrusions at intervals.

3. The ball screw for a braking system according to claim 2, characterized in that: The spikes are arranged in a leaf shape, narrow at both ends and wide in the middle, and the spikes are arranged in an arc shape.

4. The ball screw for a braking system according to claim 3, characterized in that: The reverser has snap-fit ​​protrusions on both sides for engaging in the threaded channel.

5. The ball screw for a braking system according to claim 1, characterized in that: The end of the lead screw is provided with a retaining ring groove, and an elastic retaining ring is fitted in the retaining ring groove.

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