A double-sided axial self-limiting torsion beam bushing

Abstract

A double-sided axially self-limiting torsion beam bushing includes an inner core, an inner cage, a rubber component, a stop block, and an outer tube. The inner core has multiple first protrusions. The inner cage and the rubber component are connected to the inner core as a single unit via a vulcanization process. The rubber component forms a second protrusion outside the first protrusions. Multiple grooves are shared on both the inner cage and the rubber component. The stop block has windows corresponding to the second protrusions, and limiting blocks are provided on both sides of the stop block. The outer tube is fitted over the stop block and the rubber component, and has rolled edges on both sides, integrating the inner cage and the stop block into a single unit. The stop block is placed on the rubber component, the limiting blocks are located in the grooves, and the first and second protrusions are inserted into the windows. The first and second protrusions and the stop block will contact each other during axial movement. In this application, the contact between the first and second protrusions and the stop block during axial movement creates a relative displacement restriction between the stop block and the inner core, thereby achieving the double-sided axial limiting function of the large-diameter torsion beam bushing.

Description

Technical Field

[0001] This application relates to the technical field of torsion beam bushings for vehicle chassis, and in particular to a torsion beam bushing with double-sided axial self-limiting. Background Technology

[0002] Torsion beam bushings are key components in automotive torsion beam suspension systems. Their main function is to connect the torsion beam to the vehicle body, absorb road vibrations, and transmit loads.

[0003] Traditional dog-bar type torsion beam bushings typically have a small outer diameter, with the axial limiting plate forged directly onto the inner core. Cold forging can produce a small limiting plate in this case, but when the bushing's outer diameter is larger, the required limiting plate size also increases accordingly. Manufacturing a large-diameter metal limiting plate necessitates a large-diameter metal inner core, significantly increasing the part's weight and cost. Furthermore, this structural design only allows for self-limiting on one side.

[0004] To address this, we propose a torsion beam bushing with double-sided axial self-limiting. Utility Model Content

[0005] In response to the shortcomings of the existing production technology, the applicant provides a torsion beam bushing with double-sided axial self-limiting. When the first protrusion, the second protrusion, and the stop block move axially, they will come into contact. The stop block and the inner core form a relative displacement restriction, thereby realizing the double-sided axial limiting function of the large outer diameter torsion beam bushing and making up for the deficiency of torsion beam bushings on the market that only have a single-sided axial limiting function.

[0006] The technical solution adopted in this application is as follows: A double-sided axially self-limiting torsion beam bushing, comprising: The inner core has multiple first protrusions. The inner cage and rubber parts are connected to the inner core as one unit through a vulcanization process. The rubber parts form a second protrusion outside the first protrusion. Multiple grooves are provided on both the inner cage and the rubber parts. The stop block has a window corresponding to the second protrusion, and limit blocks are also provided on both sides of the stop block; The outer tube is fitted over the stop block and rubber parts. The outer tube has rolled edges on both sides to combine the inner cage and the stop block into a whole. The stop block is placed on the rubber part, the limiting block is in the groove, the first protrusion and the second protrusion are inserted into the window. When the first protrusion and the second protrusion move axially, they will contact the stop block. The stop block will prevent the first protrusion and the second protrusion from continuing to move, thus producing a limiting effect.

[0007] Its further features are: The first protrusion and the inner core are an integral structure, and both the first protrusion and the inner core are made of metal.

[0008] The first protrusion is coated on the inner core, which is made of metal.

[0009] The inner cage consists of two separate rings.

[0010] The inner cage is a single-piece structure.

[0011] The outer tube is made of metal.

[0012] The block is made of plastic.

[0013] There are two stops, which are arranged symmetrically to form a ring.

[0014] The beneficial effects of this application are as follows: This application features a compact and reasonable structure and is easy to operate. By assembling a stop block with a window, the first and second protrusions are inserted into the window. When the first and second protrusions and the stop block move axially, they will come into contact. The stop block and the inner core form a relative displacement restriction, thereby realizing the double-sided axial limiting function of the large outer diameter torsion beam bushing, which makes up for the deficiency of the torsion beam bushings on the market that only have a single-sided axial limiting function. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this application.

[0016] Figure 2 for Figure 1 Top view.

[0017] Figure 3 This is a schematic diagram of the inner core of this application.

[0018] Figure 4 This is a schematic diagram of the inner core, inner cage, and rubber parts of this application.

[0019] Figure 5 This is a schematic diagram of the inner core, inner cage, rubber parts, and stop blocks of this application.

[0020] Figure 6 This is a schematic diagram of the block in this application.

[0021] Figure 7 This is a schematic diagram of the outer tube of this application.

[0022] Figure 8 This is a schematic diagram of the inner cage in this application.

[0023] The components include: 1. Inner core; 2. Inner cage; 3. Rubber parts; 4. Stop blocks; 5. Outer tube; 101. First protrusion; 301. Second protrusion; 302. Groove; 401. Window; 402. Limit block; 501. Curled edge. Detailed Implementation

[0024] The specific embodiments of this application are described below with reference to the accompanying drawings.

[0025] like Figures 1-8 As shown, a double-sided axially self-limiting torsion beam bushing includes an inner core 1, an inner cage 2, a rubber component 3, a stop block 4, and an outer tube 5.

[0026] The inner core 1 has multiple first protrusions 101.

[0027] In one embodiment, the first protrusion 101 and the inner core 1 are an integral structure, and both the first protrusion 101 and the inner core 1 are made of metal.

[0028] In one embodiment, the first protrusion 101 is plastic-coated onto the inner core 1, which is made of metal.

[0029] The rubber part 3, inner core 1, and inner cage 2 are connected into one piece through a vulcanization process. The rubber part 3 forms a second protrusion 301 outside the first protrusion 101. The inner cage 2 and the rubber part 3 are provided with multiple grooves 302.

[0030] In one embodiment, the inner cage 2 consists of two separate rings.

[0031] In one embodiment, the inner cage 2 is an integral structure.

[0032] The stop block 4 is provided with a window 401 corresponding to the second protrusion 301. Limiting blocks 402 are also provided on both sides of the stop block 4. The stop block 4 is placed on the rubber part 3, and the limiting blocks 402 are in the groove 302. The first protrusion 101 and the second protrusion 301 are inserted into the window 401. The first protrusion 101, the second protrusion 301 and the stop block 4 will contact each other when they move axially, which is the key to the axial self-limiting of the bushing.

[0033] In one embodiment, there are two blocks 4, which are arranged symmetrically to form a ring.

[0034] The outer tube 5 is sleeved on the outside of the stop block 4 and the rubber part 3. The outer tube 5 has rolled edges 501 on both sides, so that the inner cage 2 and the stop block 4 are combined into a whole, realizing the double-sided axial self-limiting of the inner core 1 relative to the outer tube 5.

[0035] In one embodiment, the outer tube 5 is made of metal.

[0036] In one embodiment, the stop 4 is made of plastic.

[0037] By assembling the stop 4 with window 401, the first protrusion 101 and the second protrusion 301 are inserted into the window 401. When the first protrusion 101, the second protrusion 301 and the stop 4 move axially, they will come into contact. The stop 4 and the inner core 1 form a relative displacement restriction, thereby realizing the double-sided axial limiting function of the large outer diameter torsion beam bushing, making up for the deficiency of the torsion beam bushing on the market which only has a single-sided axial limiting function.

[0038] When the first protrusion 101 and the second protrusion 301 move axially, they will come into contact with the stop block 4. The stop block 4 will prevent the first protrusion 101 and the second protrusion 301 from continuing to move, thus creating a limiting effect.

[0039] The two-way limiting mechanism ensures a more stable connection between the torsion beam and the body or subframe, reducing unintended displacement. This directly translates to more precise steering response, clearer road feel, and better vehicle attitude control, especially during high-speed cornering and emergency lane changes, improving vehicle handling stability and safety.

[0040] The above description is an explanation of this application and not a limitation thereof. The scope of this application is defined by the claims. Within the scope of protection of this application, any form of modification may be made.

Claims

1. A torsion beam bushing with double-sided axial self-limiting, characterized in that, include: The inner core (1) has multiple first protrusions (101) on it. The inner cage (2) and the rubber part (3) are connected to the inner core (1) by a vulcanization process. The rubber part (3) forms a second protrusion (301) outside the first protrusion (101). The inner cage (2) and the rubber part (3) are provided with multiple grooves (302). The stop block (4) has a window (401) corresponding to the second protrusion (301) and limit blocks (402) are provided on both sides of the stop block (4). The outer tube (5) is fitted over the stop block (4) and the rubber part (3). The outer tube (5) has rolled edges (501) on both sides, so that the inner cage (2) and the stop block (4) are combined into a whole. Among them, the stop block (4) is placed on the rubber part (3), the limiting block (402) is in the groove (302), the first protrusion (101) and the second protrusion (301) are inserted into the window (401). When the first protrusion (101) and the second protrusion (301) move along the axial direction, they will contact the stop block (4). The stop block (4) will prevent the first protrusion (101) and the second protrusion (301) from continuing to move, thus producing a limiting effect.

2. The double-sided axially self-limiting torsion beam bushing as described in claim 1, characterized in that: The first protrusion (101) and the inner core (1) are an integral structure, and both the first protrusion (101) and the inner core (1) are made of metal.

3. A double-sided axially self-limiting torsion beam bushing as described in claim 1, characterized in that: The first protrusion (101) is plastic-coated on the inner core (1), which is made of metal.

4. A double-sided axially self-limiting torsion beam bushing as described in claim 1, characterized in that: The inner cage (2) consists of two separate rings.

5. A double-sided axially self-limiting torsion beam bushing as described in claim 1, characterized in that: The inner cage (2) is an integral structure.

6. A double-sided axially self-limiting torsion beam bushing as described in claim 1, characterized in that: The outer tube (5) is made of metal.

7. A double-sided axially self-limiting torsion beam bushing as described in claim 1, characterized in that: The stop (4) is made of plastic.

8. A double-sided axially self-limiting torsion beam bushing as described in claim 1, characterized in that: There are two stops (4), which are arranged symmetrically to form a ring.

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