A triangular arm with high strength and high toughness

Abstract

This invention belongs to the field of automotive parts technology and discloses a high-strength and high-toughness triangular arm, including a first support arm, one end of which is hinged to a second support arm. Through the arrangement of bolts, a second piston, locking blocks, and a rack, this invention allows the locking blocks on both sides to retract when the bolt is rotated in the forward direction, thus adjusting the distance between the two sleeves. This adjusts the included angle between the first and second support arms, thereby adjusting the overall installation dimensions of the triangular arm. This avoids situations where the triangular arm cannot be correctly installed, or where forced installation or complete inability to install occurs. After adjustment and installation, rotating the bolt in the reverse direction extends the locking blocks on both sides, fixing the two sleeves and the included angle between the first and second support arms, thus ensuring the stability and structural strength of the triangular arm.

Description

Technical Field

[0001] This invention belongs to the field of automotive parts technology, specifically a triangular arm with high strength and high toughness. Background Technology

[0002] The control arm, also known as a steering arm, is a component of a car's suspension system that provides balance and support at the bottom of the vehicle. When driving on uneven surfaces, the tires move up and down, a function accomplished by the swinging of the control arm. The tires are mounted on the axle, which is connected to the control arm via a ball joint. It primarily bears the steering and support functions of the suspension system. Its main roles include supporting and transmitting loads, controlling wheel trajectory, and steering during vehicle movement. It plays a crucial role in vehicle handling stability, ride comfort, and safety. Dimensional deviations in the steering knuckle, frame, and control arm manufacturing can lead to incorrect installation, forced installation, or even complete inability to install the control arm. Incorrect or forced installation can cause abnormal wear, looseness, and unusual noises during vehicle operation, affecting driver safety and significantly reducing ride comfort. Summary of the Invention

[0003] The purpose of this invention is to provide a triangular arm with high strength and high toughness to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a triangular arm with high strength and high toughness, comprising a first support arm, a second support arm hinged to one end of the first support arm, a rubber bushing movably sleeved at the middle of the end of the second support arm away from the first support arm, sleeves hinged to the middle of both the first and second support arms, rectangular cavities formed inside both sets of sleeves, racks fixedly installed at the upper and lower parts of the rectangular cavities, connecting rods movably sleeved at opposite ends of both sets of sleeves, through holes formed inside the connecting rods, mounting blocks fixedly connected to the end of the connecting rod away from the sleeves, a second movable cavity formed inside the mounting block, a second piston movably sleeved inside the second movable cavity, a bolt threaded to the mounting block at the middle of the upper end of the second piston movably sleeved, hydraulic oil at the bottom of the second piston filling the second movable cavity, limit cavities formed on the upper and lower sides of the through hole away from the mounting block, and locking blocks movably sleeved inside the limit cavities.

[0005] Preferably, the rubber bushing includes a riser, a rigid rubber sleeve is fixedly connected to the side of the riser, a flexible rubber sleeve is fixedly connected to the outside of the rigid rubber sleeve, a cavity is formed inside the flexible rubber sleeve, and four sets of first movable cavities arranged in equal circumference are formed inside the rigid rubber sleeve. All four sets of first movable cavities are connected to the cavity. A first piston is movably sleeved inside the first movable cavity. Four sets of support devices are arranged in equal circumference on the side of the bottom of the rigid rubber sleeve. The bottom of each of the four sets of first movable cavities is provided with a connecting channel that communicates with the corresponding support device. A connecting rope is fixedly connected to the middle of the bottom end of the first piston, passing through the connecting channel and fixedly connected to the support device at the other end.

[0006] Preferably, the support device includes an installation cavity that communicates with the end of the connecting channel away from the first movable cavity. A support spring is fixedly installed inside the installation cavity. A support block that is movably sleeved with the installation cavity is fixedly connected to one end of the support spring. The middle part of the end of the support block that is fixedly connected to the support spring is fixedly connected to the bottom end of the connecting rope, and the end of the support block away from the support spring is fixedly connected to a flexible rubber sleeve.

[0007] Preferably, the bottom of the bolt is movably sleeved with the middle of the upper end of the second piston, and the bolt can only rotate relative to the second piston.

[0008] Preferably, the rigid rubber sleeve has an I-shaped appearance, and the maximum outer diameter of the rigid rubber sleeve is greater than the inner diameter at the point where it connects with the second support arm.

[0009] Preferably, the connecting rope is a non-elastic rope.

[0010] The beneficial effects of this invention are as follows:

[0011] 1. This invention, through the arrangement of bolts, a second piston, locking blocks, and a rack, enables the second piston to move upward when the bolt is rotated in the forward direction. Hydraulic oil then retracts the locking blocks on both sides, allowing the distance between the two sleeves to be adjusted. This adjusts the angle between the first and second support arms, thereby changing the overall installation dimensions of the triangular arm. This prevents situations where the triangular arm cannot be installed correctly, or where forced installation or complete inability to install occurs. After adjustment and installation, rotating the bolt in the reverse direction extends the locking blocks on both sides, fixing the sleeves on both sides and the angle between the first and second support arms, thus ensuring the stability and structural strength of the triangular arm.

[0012] 2. The present invention, through the arrangement of a hard rubber sleeve, a first piston, a connecting rope, and a support device, not only allows the rubber sleeve to be easily inserted into the mounting hole of the second support arm, but also allows the support block to fully extend when the rubber sleeve is fully in the installation position, thereby limiting the rubber sleeve both vertically and vertically, achieving bidirectional limiting and making the installation more stable. Attached Figure Description

[0013] Figure 1 This is a front view of the structure of the present invention;

[0014] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0015] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0016] Figure 4 This is a schematic diagram of the internal structure of the rubber bushing of the present invention;

[0017] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0018] Figure 6 This is a schematic diagram of the structural support device of the present invention.

[0019] In the diagram: 1. First support arm; 2. Second support arm; 3. Rubber bushing; 31. Riser; 32. Hard rubber sleeve; 33. Flexible rubber sleeve; 34. Cavity; 35. First movable cavity; 36. First piston; 37. Support device; 371. Mounting cavity; 372. Support spring; 373. Support block; 38. Connecting channel; 39. Connecting rope; 4. Sleeve; 5. Rectangular cavity; 6. Rack; 7. Connecting rod; 8. Through hole; 9. Mounting block; 10. Second movable cavity; 11. Second piston; 12. Bolt; 13. Hydraulic oil; 14. Limiting cavity; 15. Locking block. Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figures 1 to 3As shown, this embodiment of the invention provides a triangular arm with high strength and high toughness, including a first support arm 1, a second support arm 2 hinged to one end of the first support arm 1, a rubber bushing 3 movably sleeved at the middle of the end of the second support arm 2 away from the first support arm 1, sleeves 4 hinged to the middle of both the first support arm 1 and the second support arm 2, both sets of sleeves 4 having rectangular cavities 5 inside, racks 6 fixedly installed at the upper and bottom of the rectangular cavities 5, and connecting rods 7 movably sleeved at opposite ends of both sets of sleeves 4, the connecting rods 7 having internal openings... A through hole 8 is provided. A mounting block 9 is fixedly connected to the end of the connecting rod 7 away from the sleeve 4. A second movable cavity 10 is opened inside the mounting block 9. A second piston 11 is movably sleeved inside the second movable cavity 10. A bolt 12 with a threaded connection to the mounting block 9 is movably sleeved at the middle of the upper end of the second piston 11. The second movable cavity 10 is filled with hydraulic oil 13 at the bottom of the second piston 11. Limiting cavities 14 are opened on both the upper and lower sides of the end of the through hole 8 away from the mounting block 9. A locking block 15 is movably sleeved inside the limiting cavity 14.

[0022] like Figure 4 , Figure 5 As shown, the rubber bushing 3 includes a riser 31, a rigid rubber sleeve 32 fixedly connected to the side of the riser 31, a flexible rubber sleeve 33 fixedly connected to the outside of the rigid rubber sleeve 32, a cavity 34 opened inside the flexible rubber sleeve 33, and four sets of first movable cavities 35 arranged in equal circumference opened inside the rigid rubber sleeve 32. All four sets of first movable cavities 35 are connected to the cavity 34. A first piston 36 is movably sleeved inside the first movable cavity 35. Four sets of support devices 37 arranged in equal circumference are provided on the side of the bottom of the rigid rubber sleeve 32. The bottom of each of the four sets of first movable cavities 35 is provided with a connecting channel 38 that is connected to the corresponding support device 37. A connecting rope 39 that passes through the connecting channel 38 and is fixedly connected to the support device 37 at the other end is fixedly connected to the middle of the bottom end of the first piston 36.

[0023] like Figure 5 , Figure 6 As shown, the support device 37 includes an installation cavity 371 that communicates with the end of the connecting channel 38 away from the first movable cavity 35. A support spring 372 is fixedly installed inside the installation cavity 371. One end of the support spring 372 is fixedly connected to a support block 373 that is movably sleeved with the installation cavity 371. The middle part of the end of the support block 373 that is fixedly connected to the support spring 372 is fixedly connected to the bottom end of the connecting rope 39. The end of the support block 373 away from the support spring 372 is fixedly connected to the flexible rubber sleeve 33. When the support block 373 reaches its maximum extension under the rebound action of the support spring 372, the maximum outer diameter formed by the extension of the four sets of support blocks 373 will be greater than the inner diameter at the mounting hole of the second support arm 2, ensuring the upper and lower limiting effect of the rubber bushing 3. Moreover, the installation is simple and the stability is good.

[0024] The bottom of the bolt 12 is movably connected to the middle of the upper end of the second piston 11, and the bolt 12 can only rotate relative to the second piston 11. The up and down movement of the second piston 11 can be controlled by rotating the bolt 12, thereby realizing the adjustment and fixation of the sleeves 4 on both sides, making the adjustment simpler and more efficient.

[0025] The rigid rubber sleeve 32 has an I-shaped appearance, and its maximum outer diameter is larger than the inner diameter at the connection point with the second support arm 2. This makes it easier to limit the upper and lower positions of the rubber bushing 3 through the rigid rubber sleeve 32, thus ensuring the installation effect.

[0026] The connecting rope 39 is an inelastic rope to prevent it from undergoing elastic deformation, which would affect its restraining effect on the support block 373 and ensure that the support block 373 can move left and right accordingly as the first piston 36 moves up and down.

[0027] Working principle and usage process:

[0028] When installing the triangular arm, firstly, rotate the bolt 12 in the forward direction to screw it upward, causing the second piston 11 to move upward in the second movable cavity 10. Hydraulic oil 13 then causes the locking blocks 15, which are movably engaged with the limiting cavity 14 on both sides, to retract and disengage from the rack 6. This allows the distance between the two sleeves 4 to be adjusted according to actual installation needs, thereby adjusting the angle between the first support arm 1 and the second support arm 2. This adjusts the overall installation dimensions of the triangular arm, preventing incorrect installation, forced installation, or even complete inability to install. After adjustment and installation, rotate the bolt 12 in the reverse direction to screw it downward, causing the second piston 11 to move downward in the second movable cavity 10. This causes the locking blocks 15 on both sides to extend and engage in the toothed gaps of the rack 6, thus fixing the sleeves 4 on both sides and the angle between the first support arm 1 and the second support arm 2, ensuring the stability and structural strength of the triangular arm.

[0029] Secondly, during the installation of the rubber bushing 3, in the initial stage, since the first piston 36 is located above the first movable cavity 35, the support device 37 is pulled by the connecting rope 39 into the installation cavity 371. Therefore, the rubber bushing 3 can be easily inserted from the end with the support device 37 into the installation hole of the second support arm 2. As the rubber bushing 3 gradually extends into the installation hole of the second support arm 2, it gradually compresses the cavity 34, allowing the air inside the cavity 34 to enter the first movable cavity 35. This gradually pushes the first piston 36 downward, causing the support block 373 to gradually extend laterally under the rebound action of the support spring 372. When the rubber bushing 3 is fully in the installation position, the support block 373 extends completely, thereby limiting the rubber bushing 3 both vertically and horizontally, achieving bidirectional limiting and making the installation more stable.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A triangular arm having high strength and high toughness, comprising a first support arm (1), characterized in that: One end of the first support arm (1) is hinged with the second support arm (2), the middle part of the second support arm (2) away from the first support arm (1) one end is movably sleeved with the rubber bushing (3), the middle part of the first support arm (1) and the second support arm (2) is hinged with the sleeve pipe (4), the inside of two groups of sleeve pipes (4) is provided with the rectangular cavity (5), the upper part and the bottom of the rectangular cavity (5) are fixedly installed with the rack (6), the opposite end of two groups of sleeve pipes (4) is movably sleeved with the connecting rod (7), the inside of the connecting rod (7) is provided with the through hole (8), the end of the connecting rod (7) away from the sleeve pipe (4) is fixedly connected with the mounting block (9), the inside of the mounting block (9) is provided with the second movable cavity (10), the inside of the second movable cavity (10) is movably sleeved with the second piston (11), the middle part of the second piston (11) upper end is movably sleeved with the bolt (12) which is threadedly connected with the mounting block (9), the inside of the second movable cavity (10) is filled with the hydraulic oil (13) which is located at the bottom of the second piston (11), the up and down sides of the through hole (8) away from the mounting block (9) one end are provided with the limiting cavity (14), the inside of the limiting cavity (14) is movably sleeved with the clamping block (15); Wherein, the rubber bushing (3) includes a riser (31), the lateral surface of the riser (31) is fixedly connected with a hard rubber sleeve (32), the outer side of the hard rubber sleeve (32) is fixedly connected with a flexible rubber sleeve (33), the inside of the flexible rubber sleeve (33) is provided with a cavity (34), the inside of the hard rubber sleeve (32) is provided with four groups of first movable cavities (35) arranged at equal circumferences, four groups of the first movable cavities (35) are communicated with the cavity (34), the inside of the first movable cavity (35) is movably sleeved with a first piston (36), the lateral surface of the bottom of the hard rubber sleeve (32) is provided with four groups of support devices (37) arranged at equal circumferences, the bottom of four groups of the first movable cavities (35) is respectively provided with a connecting channel (38) communicated with the corresponding support device (37), the middle part of the bottom of the first piston (36) is fixedly connected with a connecting rope (39) penetrating through the connecting channel (38) and fixedly connected with the support device (37) at the other end; Wherein, the support device (37) includes an installation cavity (371) communicated with the connecting channel (38) away from the first movable cavity (35) one end, the inside of the installation cavity (371) is fixedly installed with a supporting spring (372), one end of the supporting spring (372) is fixedly connected with a supporting block (373) movably sleeved with the installation cavity (371), the middle part of the supporting block (373) fixedly connected with one end of the supporting spring (372) is fixedly connected with the bottom of the connecting rope (39), and the end of the supporting block (373) away from the supporting spring (372) is fixedly connected with the flexible rubber sleeve (33).

2. The triangular arm with high strength and high toughness according to claim 1, characterized in that: The bottom of the bolt (12) and the middle part of the upper end of the second piston (11) are movably sleeved, and the bolt (12) can only rotate relative to the second piston (11). The bottom of the bolt (12) and the middle part of the upper end of the second piston (11) are movably sleeved, and the bolt (12) can only rotate relative to the second piston (11).

3. The triangular arm with high strength and high toughness according to claim 1, characterized in that: The hard rubber sleeve (32) is in the shape of an I-beam, and the maximum outer diameter of the hard rubber sleeve (32) is greater than the inner diameter of the sleeve joint with the second support arm (2).

4. The triangular arm with high strength and high toughness according to claim 1, characterized in that: The connecting rope (39) is an inelastic rope.

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