Anti-rotation sleeve, anti-rotation device and vehicle integrated braking system
By disassembling the anti-rotation sleeve into the main body and connecting seat of the casing, and using seamless steel pipes and stamping process to form the guide rail part, combined with the steel plate stamping and forming the connecting seat, the existing anti-rotation sleeve materials are solved, and the problems of insufficient strength and toughness and high production costs are achieved, and the strength, toughness and cost are significantly improved.
Patent Information
- Application Number
- CN202421743882.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-22
AI Technical Summary
The existing anti-rotating sleeves have problems with insufficient material strength and toughness during the processing process, and it is difficult to process guide rails in the aluminum alloy processing process, resulting in high production costs.
The anti-rotating sleeve is disassembled into the main body of the sleeve and the connecting seat, and the guide rail part is formed through seamless steel pipes and stamping process, combined with the steel plate stamping and forming the connecting seat, and connected by interference fit, welding or riveting.
It improves the structural strength and toughness of the anti-rotating sleeve and reduces production costs. It has significant advantages over injection molded parts and aluminum alloy machining solutions.
Smart Images
Figure CN222910690U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of vehicle braking, and particularly to an anti-rotation sleeve, an anti-rotation device and a vehicle integrated braking system. Background Art
[0002] A ball screw is a mechanical structure that converts rotational motion into linear motion. When a ball screw is applied, a guide rail needs to be set to prevent the nut from rotating with the screw without making linear motion. A typical application of a ball screw in a vehicle integrated braking system is as Figures 1 to 3 shown. The screw 1 is driven by a driving device to perform rotational motion, and the nut 2 moves linearly along the screw 1. Among them, a guide groove 4 is machined on the outer side wall of the nut 1, and a protruding guide rail 5 is machined on the inner side wall of the anti-rotation sleeve 3 sleeved outside the nut 2. The guide rail 5 cooperates with the guide groove 4, so that the nut 2 moves linearly along the guide rail 5 of the anti-rotation sleeve 3.
[0003] The existing anti-rotation sleeves mainly use injection molding process or aluminum alloy machining process, and both of these processes have some problems that are difficult to solve. The injection molding process limits the material of the anti-rotation sleeve to only plastic, and the strength and toughness of plastic are worse than those of metal, which cannot meet the application requirements. The aluminum alloy machining process is difficult to machine the guide rail on the inner side wall of the anti-rotation sleeve, resulting in a very high production cost.
[0004] In view of the above problems, how to solve the problems of difficult processing and high cost of the existing anti-rotation sleeves without affecting the strength and performance has become an important topic in the design of the current vehicle integrated braking system. Summary of the Utility Model
[0005] In view of this, the purpose of the present application is to provide an anti-rotation sleeve, an anti-rotation device and a vehicle integrated braking system to solve at least one of the above technical problems.
[0006] The present application provides an anti-rotation sleeve, including: a sleeve main body, on the side wall of which there is a guide rail portion extending axially, and the guide rail portion is formed by stamping from the outside to the inside of the sleeve main body along the radial direction; and a connection seat, which is arranged at one end of the sleeve main body. The connection seat includes a seat body and a neck platform integrally formed by stamping process. The seat body is provided with a central hole matching the outer diameter of the sleeve main body and a plurality of connection holes distributed around the central hole. The neck platform is correspondingly arranged on one end face of the seat body corresponding to the central hole. The neck platform is sleeved outside one end of the sleeve main body and is connected to the side wall of the sleeve main body.
[0007] Combined with the first aspect, in some optional embodiments, the guide rail portion is convex with respect to the inner side wall of the sleeve main body and concave with respect to the outer side wall of the sleeve main body.
[0008] Combined with the first aspect, in some optional embodiments, the sleeve main body is a seamless steel pipe.
[0009] In combination with the first aspect, in some alternative embodiments, the number of guide rail portions is multiple, and the multiple guide rail portions are evenly distributed along the circumferential direction of the sleeve body.
[0010] In combination with the first aspect, in some alternative embodiments, the cross-section of the guide rail portion is trapezoidal, and the top ends of the two waists of the trapezoid and the upper base, as well as the bottom ends of the two waists and the side wall of the sleeve body, are all in fillet transition.
[0011] In combination with the first aspect, in some alternative embodiments, the surface of the guide rail portion corresponding to the inner side of the sleeve body is provided with an anti-friction coating.
[0012] In combination with the first aspect, in some alternative embodiments, the neck platform is connected to the side wall of one end of the sleeve body by interference fit, welding or riveting.
[0013] In combination with the first aspect, in some alternative embodiments, the connection hole is for a bolt to pass through, and a groove for accommodating the bolt head is provided at the connection hole.
[0014] In a second aspect, the present application provides an anti-rotation device, including a ball screw, a nut, and the anti-rotation sleeve in any one of the embodiments in the first aspect above; the ball screw is in threaded connection with the nut, a guide groove extending axially is provided on the outer side wall of the nut, the anti-rotation sleeve is sleeved outside the nut, and the guide rail portion of the sleeve body is matched with the guide groove of the nut.
[0015] In a third aspect, the present application provides a vehicle integrated braking system, including the anti-rotation device in the second aspect above.
[0016] Based on the above technical solutions, for the anti-rotation sleeve, anti-rotation device and vehicle integrated braking system provided by the present application, the anti-rotation sleeve is disassembled into two parts, namely a sleeve body and a connecting seat. Among them, the sleeve body can use seamless steel pipe, the guide rail portion on the sleeve body can be formed by stamping process, the connecting seat can be formed by stamping process from a steel plate. After the two parts are processed separately, they are then connected together. In this way, each part can choose more suitable materials and more reasonable processing techniques for manufacturing. Compared with injection molded parts, the anti-rotation sleeve of this structure ensures strength and toughness, and the cost can also be significantly reduced compared with the aluminum alloy machining solution. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.
[0018] Figure 1 It is a schematic diagram of the application of a typical ball screw in a vehicle integrated braking system.
[0019] Figure 2 It is Figure 1 a schematic diagram of the structures of the ball screw, the nut, and the anti-rotation sleeve in
[0020] Figure 3 It is Figure 1 a three-dimensional schematic diagram of the anti-rotation sleeve in
[0021] Figure 4 It is a schematic diagram of an anti-rotation sleeve provided by an embodiment of the present application.
[0022] Figure 5 It is a schematic diagram of a sleeve body provided by an embodiment of the present application.
[0023] Figure 6 It is a schematic diagram of a connecting seat provided by an embodiment of the present application.
[0024] Figure 7 It is another schematic diagram of a connecting seat provided by an embodiment of the present application.
[0025] Reference numerals: 1, screw; 2, nut; 3, anti-rotation sleeve; 4, guide groove; 5, guide rail; 100, anti-rotation sleeve; 10, sleeve body; 11, guide rail portion; 20, connecting seat; 21, seat body; 211, central hole; 212, connecting hole; 213, groove; 22, neck platform. Specific embodiments
[0026] Next, specific embodiments of the present application will be described in detail with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the description of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.
[0027] In the description of the present application, unless otherwise clearly defined and limited, terms such as "connection", "arrangement", "installation", etc. shall be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.
[0028] The terms "upper", "lower", "left", "right", "front", "rear", "center", "top", "bottom", "inner", "outer", "vertical", "horizontal", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is customarily placed during use. They are only for the convenience of description and to simplify the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application.
[0029] The terms "first", "second", "third", etc. are only used to distinguish elements with similar attributes, rather than indicating or implying relative importance or a specific order, unless otherwise clearly specified and defined.
[0030] The term "comprising", "including", "having" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the process, method, article or device comprising that element.
[0031] The term "a plurality of" means two or more (including two).
[0032] The term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.
[0033] Descriptions such as "an embodiment", "as an example", "in an implementation manner", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example can be included in at least one embodiment or example of this application. The schematic expressions of such terms do not necessarily refer to the same embodiment, nor are they independent or alternative embodiments that are mutually exclusive with other embodiments. Without conflict, the embodiments and features in the embodiments of this application can be combined in a suitable manner.
[0034] Figure 4 It is a schematic structural diagram of an anti-rotation sleeve 100 provided for the embodiments of this application.
[0035] As Figure 4 shown, the embodiments of this application provide an anti-rotation sleeve 100, which includes a sleeve body 10 and a connection seat 20.
[0036] Figure 5 This is a schematic structural diagram of a casing body 10 provided by an embodiment of the present application.
[0037] As Figure 5 shown, the casing body 10 is a circular tube structure with openings at both ends and a hollow interior. Exemplarily, the casing body 10 is a seamless steel pipe.
[0038] A guide rail portion 11 is provided on the side wall of the casing body 10. The guide rail portion 11 extends axially from one end of the casing body 10 to the other end. The guide rail portion 11 is used to cooperate with a guide groove on the outer side wall of a lead nut to prevent the lead nut from rotating synchronously with the lead screw. The guide rail portion 11 is formed by stamping from the outside of the casing body 10 radially inward. As a result, the guide rail portion 11 protrudes with respect to the inner side wall of the casing body 10 and is recessed with respect to the outer side wall of the casing body 10. This processing method has the characteristics of high material utilization rate and simple forming process.
[0039] The number of the guide rail portions 11 can be more than one. Exemplarily, the number of the guide rail portions 11 is three, and the three guide rail portions 11 are evenly distributed along the circumferential direction of the casing body 10.
[0040] The cross-section of the guide rail portion 11 can be rectangular, semi-circular, trapezoidal or other shapes. Exemplarily, the cross-section of the guide rail portion 11 is trapezoidal, and the tops of the two waists of the trapezoid are rounded at the transition with the upper base, and the bottoms of the two waists are also rounded at the transition with the side wall of the casing body 10.
[0041] Using rounded corners at the edges of the guide rail portion 11 can effectively disperse the stress at the corresponding positions. Moreover, in the cooperation between the guide rail portion 11 and the guide groove of the lead nut, the rounded corners can reduce the friction and resistance during assembly, making the assembly process smoother. In addition, during the manufacturing process, the rounded corners also help to reduce the tearing and deformation of the material during stamping.
[0042] In order to avoid generating noise when the guide rail portion 11 and the guide groove of the lead nut are in friction, a friction-reducing coating can be sprayed on the surface of the guide rail portion 11 corresponding to the inner side of the casing body 10. The inner side wall of the casing body 10, as well as the guide groove and the outer side wall of the lead nut, can also be sprayed with a friction-reducing coating.
[0043] Figure 6 and Figure 7 respectively are schematic structural diagrams of a connecting seat 20 provided by an embodiment of the present application from different perspectives.
[0044] As Figure 6 and Figure 7 shown, the connecting seat 20 approximately has a shape of a necked flange and includes a seat body 21 and a neck platform 22 that are integrally connected.
[0045] The seat body 21 is used for connecting the anti-rotation sleeve 100 with other components. The seat body 21 is in the shape of a circular, triangular or other plate shape. Exemplarily, the shape of the seat body 21 is triangular.
[0046] A central hole 211 and a plurality of connection holes 212 distributed around the central hole 211 are provided on the seat body 21. The end of the sleeve body 10 is arranged in the central hole 211, and the diameter of the central hole 211 matches the outer diameter of the sleeve body 10. The connection holes 212 are used for bolts to pass through so as to connect the connection seat 20 with other components. The number of the connection holes 212 is more than two. Exemplarily, the number of the connection holes 212 is three.
[0047] Wherein, a groove 213 for accommodating the bolt head can be arranged at each connection hole 212, and the connection hole 212 is arranged at the center position of the bottom surface of the groove 213. The groove 213 can be formed by stretch processing, so that the groove 213 is recessed with respect to one end face of the seat body 21 and protrudes with respect to the other end face of the seat body 21.
[0048] The neck platform 22 is annular and is arranged on one end face of the seat body 21 corresponding to the central hole 211. The inside of the neck platform 22 is communicated with the central hole 211, and the inner diameter of the neck platform 22 is equal to the diameter of the central hole 211. The neck platform 22 is sleeved on the outer side of one end of the sleeve body 10 and is connected with the side wall of this end. The neck platform 22 enhances the connection strength and stability between the connection seat 20 and the sleeve body 10. The neck platform 22 can be formed by stretch processing.
[0049] Exemplarily, the neck platform 22 is connected with the side wall of one end of the sleeve body 10 by an interference fit manner, thereby realizing the connection between the connection seat 20 and the sleeve body 10. The formed anti-rotation sleeve 100 can withstand a certain torsional force and axial force.
[0050] In order to ensure the stability of the connection between the connection seat 20 and the sleeve body 10, the neck platform 22 and the side wall of one end of the sleeve body 10 can also be connected by welding and / or riveting.
[0051] The whole connection seat 20 can be formed by stamping a metal plate, and has the characteristics of high material utilization rate, simple forming process and easy production and processing. Exemplarily, the connection seat 20 is formed by stamping a steel plate.
[0052] In summary, for the anti-rotation sleeve 100 provided in the embodiment of the present application, the anti-rotation sleeve 100 is disassembled into two parts, namely a sleeve main body 10 and a connection seat 20. Among them, the sleeve main body 10 can use seamless steel pipes, the guide rail portion 11 on the sleeve main body 10 can be formed by stamping, and the connection seat 20 can be formed by stamping a steel plate. After the two parts are processed separately, they are connected together by interference fit, welding or riveting. In this way, more suitable materials and more reasonable processing techniques can be selected for each part during manufacturing. Compared with injection molded parts, the anti-rotation sleeve 100 provided in the embodiment of the present application ensures structural strength and toughness, and the cost can also be significantly reduced compared with the aluminum alloy machining solution.
[0053] The embodiment of the present application further provides an anti-rotation device, including a ball screw, a nut, and the above-mentioned anti-rotation sleeve. Among them, the ball screw is threadedly connected to the nut, the anti-rotation sleeve is sleeved outside the nut, and the guide rail portion of the sleeve main body is matched with the guide groove on the outer wall of the nut. When the ball screw rotates, the nut moves linearly along the screw under the cooperation of the guide groove and the guide rail portion.
[0054] The embodiment of the present application further provides a vehicle integrated braking system, including the above-mentioned anti-rotation device.
[0055] The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of various changes or substitutions within the technical scope disclosed in the present application, and these should all be covered within the protection scope of the present application.
Claims
1. An anti-rotation sleeve, characterized in that: include: The sleeve body has a guide rail portion extending in the axial direction on its side wall, and the guide rail portion is formed by stamping from the outer side of the sleeve body toward the inner side in the radial direction; and A connecting seat is arranged at one end of the sleeve body, and the connecting seat includes a seat body and a neck platform integrally formed by a stamping process. The seat body is provided with a central hole matching the outer diameter of the sleeve body and a plurality of connecting holes distributed around the central hole. The neck platform is arranged on one side end surface of the seat body corresponding to the central hole, and the neck platform is sleeved on the outside of one end of the sleeve body and connected to the side wall of the sleeve body.
2. The anti-rotation sleeve according to claim 1, characterized in that: The guide rail portion is convex relative to the inner side wall of the sleeve body, and is concave relative to the outer side wall of the sleeve body.
3. The anti-rotation sleeve according to claim 1, characterized in that: The casing body is a seamless steel pipe.
4. The anti-rotation sleeve according to claim 1, characterized in that: There are multiple guide rail parts, and the multiple guide rail parts are evenly distributed along the circumference of the sleeve body.
5. The anti-rotation sleeve according to claim 1, characterized in that: The cross section of the guide rail portion is trapezoidal, and the top and upper bottom of the two waists of the trapezoid, as well as the bottom ends of the two waists and the side wall of the sleeve body are all rounded transitions.
6. The anti-rotation sleeve according to claim 1, characterized in that: A friction-reducing coating is provided on a surface of the guide rail portion corresponding to the inner side of the sleeve body.
7. The anti-rotation sleeve according to claim 1, characterized in that: The neck platform is connected to a side wall of one end of the sleeve body by interference fit, welding or riveting.
8. The anti-rotation sleeve according to claim 1, characterized in that: The connection hole is used for the bolt to pass through, and a groove for accommodating the bolt head is provided at the connection hole.
9. An anti-rotation device, characterized in that: It comprises a ball screw, a nut, and an anti-rotation sleeve as claimed in any one of claims 1 to 8; The ball screw is threadedly connected to the nut. The outer side wall of the nut is provided with a guide groove extending in the axial direction. The anti-rotation sleeve is sleeved on the outside of the nut, and the guide rail portion of the sleeve body matches the guide groove of the nut.
10. A vehicle integrated braking system, characterized in that: Comprising the anti-rotation device as claimed in claim 9.