Design structure for preventing vibration noise of floating brake calipers
By using a combined support structure of soft and hard bushings in the floating brake caliper, the vibration and noise problem of the housing and bracket connection is solved, and noise reduction and pedal feel are optimized.
Patent Information
- Application Number
- CN202422443122.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-10
AI Technical Summary
In traditional floating brake calipers, the housing and the bracket are connected through soft support bushings, resulting in excessive vibration amplitude, resulting in rattle noise.
A combined support structure of soft and hard bushings is adopted. The housing and the bracket are connected by hard and soft guide pin components. The hard bushing provides close support in the radial direction, and the soft bushing provides smooth slippage in the axial direction to reduce the amplitude.
Effectively reduce vibration noise between the housing and the bracket, maintain a good pedal feel and reduce axial sliding force.
Smart Images
Figure CN223178023U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of braking systems, and particularly to a design structure applied to prevent the vibration noise of a floating brake caliper. Background Art
[0002] Due to the continuous development of the automotive industry, customers' requirements for vehicle comfort are constantly increasing. Along with this trend, the vehicle also has higher requirements for the noise of the brake caliper.
[0003] In a traditional FN floating caliper, since the housing is axially moved by being connected to the bracket through two pin holes, and the middle of the cooperation between the housing hole and the pin is supported by a bushing. Currently, most of the bushings on both sides are soft supports, resulting in too large an amplitude of vibration between the housing and the bracket, which in turn causes rattle noise (i.e., gear knocking noise). In order to avoid the rattle noise caused by too large an amplitude between the housing and the bracket, a new structure is designed. Summary of the Invention
[0004] The utility model aims to overcome the deficiencies of the prior art and provides a design structure applied to prevent the vibration noise of a floating brake caliper. By designing a combined support structure of hard and soft bushings, it solves the rattle noise caused by too large a relative amplitude due to the connection of the housing and the bracket through the guide pins of the soft support bushings.
[0005] To achieve the above object, a design structure applied to prevent the vibration noise of a floating brake caliper is designed, including a housing and a bracket. The left and right sides of the housing are respectively provided with housing guide pin holes; the left and right sides of the bracket are respectively provided with bracket guide pin holes. The housing is connected to the bracket through guide pin assemblies respectively passing through the housing guide pin holes and the bracket guide pin holes. The characteristics are as follows: the guide pin assembly includes a hard guide pin assembly and a soft guide pin assembly; the hard guide pin assembly includes a guide pin, a hard bushing support, a hard bushing, and a plug. A hard bushing is sleeved on the outer side of the guide pin, the tail of the hard bushing is connected to the plug, and a hard bushing support is sleeved on the guide pin between the guide pin and the hard bushing; the soft guide pin assembly includes a guide pin, a soft bushing, and a plug. A soft bushing is sleeved on the outer side of the guide pin, and the tail of the soft bushing is connected to the plug.
[0006] One side housing guide pin hole on the housing is connected to one side bracket guide pin hole on the bracket through a hard guide pin assembly; the other side housing guide pin hole on the housing is connected to the other side bracket guide pin hole on the bracket through a soft guide pin assembly.
[0007] The hard bushing support is a cylindrical structure with a plurality of waist-shaped convex blocks uniformly distributed on the outer edge.
[0008] The described hard bushing includes a plastic support area and a soft rubber area. The plastic support area is a cylindrical structure, and the front soft rubber area and the rear soft rubber area are respectively connected to the left and right sides of the plastic support area. The front soft rubber area is a T-shaped threaded hole structure, and the rear soft rubber area is a tapered hole structure.
[0009] The described hard bushing is supported within the plastic support area of the hard bushing.
[0010] The outer sides of the front soft rubber area and the rear soft rubber area of the hard bushing are in interference fit with the housing guide pin hole, and the outer side of the plastic support area of the hard bushing is in clearance fit with the housing guide pin hole.
[0011] The described soft bushing is a soft rubber bushing. The two ends of the corrugated hole of the soft bushing are respectively connected to the T-shaped threaded hole and the tapered hole structure.
[0012] Compared with the prior art, the present utility model provides a design structure applied to prevent the vibration noise of a floating brake caliper. By designing a combined support structure of hard and soft bushings, the rattle noise caused by excessive relative amplitude due to the connection of the housing and the bracket through the guide pin of the soft support bushing is solved. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic structural view of the present utility model.
[0014] Figure 2 It is the front view of the hard bushing support structure in the present utility model.
[0015] Figure 3 It is the side view of the hard bushing support structure in the present utility model.
[0016] Figure 4 It is the front view of the hard bushing structure in the present utility model.
[0017] Figure 5 It is the cross-sectional view of the hard bushing structure in the present utility model.
[0018] Figure 6 It is the cross-sectional view of the soft bushing structure in the present utility model.
[0019] See Figures 1 to 5 , 1 is the housing, 1-1 is the housing guide pin hole, 2 is the bracket, 2-1 is the bracket guide pin hole, 3 is the guide pin, 4 is the hard bushing support, 5 is the hard bushing, 6 is the plug, and 7 is the soft bushing. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] The following further describes the present utility model with reference to the drawings.
[0021] As Figures 1 to 6As shown in the figure, on the left and right sides of the housing 1, there are respectively provided housing guide pin holes 1-1; on the left and right sides of the bracket 2, there are respectively provided bracket guide pin holes 2-1, and the housing 1 is connected through the guide pin assembly passing through the housing guide pin holes 1-1 and the bracket guide pin holes 2-1 respectively. The guide pin assembly includes a hard guide pin assembly and a soft guide pin assembly; the hard guide pin assembly includes a guide pin, a hard bushing support, a hard bushing, and a plug. A hard bushing 5 is sleeved outside the guide pin 3, the tail of the hard bushing 5 is connected to the plug 6, and a hard bushing support 4 is sleeved on the guide pin 3 between the guide pin 3 and the hard bushing 5; the soft guide pin assembly includes a guide pin, a soft bushing, and a plug. A soft bushing 7 is sleeved outside the guide pin 3, and the tail of the soft bushing 7 is connected to the plug 6.
[0022] One side housing guide pin hole 1-1 on the housing 1 is connected to one side bracket guide pin hole 2-1 on the bracket 2 through the hard guide pin assembly; the other side housing guide pin hole on the housing 1 is connected to the other side bracket guide pin hole on the bracket 2 through the soft guide pin assembly.
[0023] The hard bushing support 4 is a cylindrical structure 4-1, and a plurality of kidney-shaped bumps 4-2 are uniformly connected to the outer edge.
[0024] The hard bushing 5 includes a plastic support area and a soft rubber area. The plastic support area 5-2 is a cylindrical structure, and the front soft rubber area 5-1 and the rear soft rubber area 5-3 are respectively connected to the left and right sides of the plastic support area 5-2; the front soft rubber area 5-1 is a T-shaped threaded hole structure; the rear soft rubber area 5-3 is a tapered hole structure.
[0025] The structure of the hard bushing 5 is formed by injection molding of the support area and the soft rubber area through the overmolding process. When assembling with the housing 1, the front soft rubber area 5-1 and the rear soft rubber area 5-3 are in interference fit with the housing guide pin hole 1-1 of the housing 1 on one side; the plastic support area 5-2 is in clearance fit with the housing guide pin hole 1-1 of the housing 1 on one side.
[0026] The hard bushing support 4 is inside the plastic support area 5-2 of the hard bushing 5.
[0027] The outer sides of the front soft rubber area 5-1 and the rear soft rubber area of the hard bushing 5 are in interference fit with the housing guide pin hole 1-1; the outer side of the plastic support area 5-2 of the hard bushing 5 is in clearance fit with the housing guide pin hole 1-1.
[0028] The soft bushing 7 is a soft rubber bushing, and the two ends of the soft bushing 7 with corrugated holes are respectively connected to the T-shaped threaded hole and the tapered hole structure.
[0029] When assembling with the housing 1, the soft bushing 7 is in interference fit with the housing guide pin hole 1-1 of the housing 1 and serves as a flexible support.
[0030] In the present utility model, the guide pin holes on both sides of the bracket 2 and the housing 1 (i.e., the bracket guide pin hole 2-1 and the housing guide pin hole 1-1) are supported and connected through the guide pin 3 and the guide pin bushing. The guide pin bushing on one side is a hard support (i.e., the cooperation of the hard bushing support 4 and the hard bushing 5), which can make the bracket 2, the guide pin 3 and the housing 1 form a tight support fit, reducing the radial amplitude between the housing 1 and the bracket 2; the guide pin bushing on the other side is a soft support (i.e., the soft bushing 7), enabling the bracket 2, the guide pin 3 and the housing 1 to form a smooth axial slip with better drag performance; it can not only solve the noise complaint caused by excessive radial amplitude but also meet the axial sliding force without affecting the pedal feel.
Claims
1. A design structure applied to prevent vibration noise of a floating brake caliper, comprising a housing and a bracket. On the left and right sides of the housing (1), housing guide pin holes (1-1) are respectively provided; on the left and right sides of the bracket (2), bracket guide pin holes (2-1) are respectively provided. The housing (1) is connected to the bracket through guide pin assemblies respectively passing through the housing guide pin holes (1-1) and the bracket guide pin holes (2-1), and is characterized in that: The guide pin assembly includes a hard guide pin assembly and a soft guide pin assembly; the hard guide pin assembly includes a guide pin, a hard bushing support, a hard bushing, and a plug. A hard bushing (5) is sleeved on the outer side of the guide pin (3), the tail of the hard bushing (5) is connected to the plug (6), and a hard bushing support (4) is sleeved on the guide pin (3) between the guide pin (3) and the hard bushing (5); the soft guide pin assembly includes a guide pin, a soft bushing, and a plug. A soft bushing (7) is sleeved on the outer side of the guide pin (3), and the tail of the soft bushing (7) is connected to the plug (6).
2. The design structure for preventing vibration noise of a floating brake caliper according to claim 1, characterized in that: One side shell guide pin hole (1-1) on the shell (1) is connected to one side bracket guide pin hole (2-1) on the bracket (2) through the hard guide pin assembly; the other side shell guide pin hole on the shell (1) is connected to the other side bracket guide pin hole on the bracket (2) through the soft guide pin assembly.
3. A design structure for preventing vibration noise of a floating brake caliper according to claim 1, characterized in that: The hard bushing support (4) is a cylindrical structure (4-1) with a number of kidney-shaped bumps (4-2) evenly distributed on its outer edge.
4. A design structure for preventing vibration noise of a floating brake caliper according to claim 1, characterized in that: The hard bushing (5) includes a plastic support area and a soft rubber area. The plastic support area (5-2) is a cylindrical structure, and a front soft rubber area (5-1) and a rear soft rubber area (5-3) are respectively connected to the left and right sides of the plastic support area (5-2); the front soft rubber area (5-1) is a T-shaped threaded hole structure; the rear soft rubber area (5-3) is a tapered hole structure.
5. A design structure for preventing vibration noise of a floating brake caliper according to claim 3, characterized in that: The hard bushing support (4) is inside the plastic support area (5-2) of the hard bushing (5).
6. A design structure applied to prevent vibration noise of a floating brake caliper according to claim 4, characterized in that: The outer sides of the front soft rubber area (5-1) and the rear soft rubber area (5-3) of the hard bushing (5) are in interference fit with the shell guide pin hole (1-1); the outer side of the plastic support area (5-2) of the hard bushing (5) is in clearance fit with the shell guide pin hole (1-1).
7. A design structure applied to prevent vibration noise of a floating brake caliper according to claim 1, characterized in that: The soft bushing (7) is a soft rubber bushing, and the two ends of the corrugated hole of the soft bushing (7) are respectively connected to a T-shaped threaded hole and a tapered hole structure.