Automobile swing arm structure

Abstract

The utility model provides an automobile swing arm structure which comprises a swing arm mounting plate, a mounting hole formed in the middle of the swing arm mounting plate and a ball head assembly arranged in the mounting hole. The ball head assembly comprises a ball head seat, a ball head rod movably connected in the ball head seat, a baffle arranged on the outer wall of the lower portion of the ball head seat, a mounting groove formed in the outer wall of the upper portion of the ball head seat and a clamping spring arranged at the mounting groove. The limiting block can prevent the clamping spring from deforming in the axial direction, so that the clamping spring is not prone to disengagement from the interior of the installation groove, the ball head assembly is not prone to disengagement from the swing arm installation plate, and safety is improved; certainly, when the ball head assembly needs to be disassembled from the swing arm mounting plate, only the bolt needs to be screwed out of the threaded hole, then the clamping spring is disassembled from the mounting groove, and then the ball head seat is pulled out of the mounting hole, so that disassembly can be completed, and the effect of facilitating replacement and maintenance is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive swing arms, and in particular to an automotive swing arm structure. Background Technology

[0002] The control arm is the connection mechanism between the vehicle frame and the wheels. It plays a guiding and supporting role in the suspension, effectively improving the stability of the car's steering wheel and allowing the driver to easily control the direction of the car.

[0003] In the prior art, the control arm adopts a structure of two bushings, control arm body and ball joint. The ball joint is usually connected to the control arm body by bolts and nuts. For example, Chinese utility model patent publication number CN219687002U discloses an automotive power steering control arm, which mentions that the ball joint assembly is connected to the control arm body by fixing bolts and nuts. However, the fixing method of fixing by bolts and nuts is prone to loosening due to the vibration generated by the car during long-term driving, which can easily cause safety hazards. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide an automotive swing arm structure.

[0005] The present invention provides the following technical solution: an automotive swing arm structure, including a swing arm mounting plate, a mounting hole opened in the middle of the swing arm mounting plate, and a ball joint assembly disposed in the mounting hole;

[0006] The ball joint assembly includes a ball joint seat, a ball joint rod movably connected within the ball joint seat, a baffle provided on the lower outer wall of the ball joint seat, a mounting groove provided on the upper outer wall of the ball joint seat, and a retaining spring provided at the mounting groove. The ball joint seat passes through the mounting hole, and the retaining spring and the baffle restrict the ball joint seat within the mounting hole. The ball joint assembly also includes several limiting units detachably connected to the ball joint seat. Each limiting unit includes a limiting block and a connector detachably connected to the limiting block on the ball joint seat. The limiting block abuts against the upper surface of the retaining spring.

[0007] Furthermore, the connector includes a bolt and a threaded hole on the ball head seat, the limiting block is disposed on the outer wall of the bolt, and the bolt is screwed into the threaded hole.

[0008] Furthermore, a limiting ring is provided on the swing arm mounting plate, and when the retaining spring contacts the swing arm mounting plate, the retaining spring is located inside the limiting ring.

[0009] Furthermore, the mounting hole of the swing arm mounting plate is provided with a protrusion, and the outer wall of the ball head seat is provided with a mounting part. When the ball head seat is inserted into the mounting hole, the outer wall of the mounting part and the inner wall of the protrusion are interference-fitted.

[0010] Furthermore, the top surface of the mounting part slopes downward from the inside out to form an inclined surface.

[0011] Furthermore, notches are provided on both sides of the opening of the ball head seat.

[0012] Furthermore, a dust cover is fitted between the opening of the ball joint and the outer wall of the ball joint rod.

[0013] Furthermore, the swing arm mounting plate includes a lower plate and an upper plate welded to the lower plate, and the mounting holes include upper mounting holes and lower mounting holes respectively opened on the upper plate and the lower plate.

[0014] The beneficial effects of this utility model are as follows: the limiting block can prevent the retaining spring from deforming axially, making it difficult for the retaining spring to detach from the mounting groove, thereby preventing the ball joint assembly from detaching from the rocker arm mounting plate and increasing safety; of course, when it is necessary to remove the ball joint assembly from the rocker arm mounting plate, it is only necessary to unscrew the bolt from the threaded hole, then remove the retaining spring from the mounting groove, and then pull the ball joint seat out of the mounting hole to complete the disassembly, achieving the effect of convenient replacement and maintenance; in addition, the limiting ring can limit the radial deformation of the retaining spring, thereby further preventing the retaining spring from detaching from the mounting groove, thereby preventing the ball joint assembly from detaching from the rocker arm mounting plate and increasing safety. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the explosion of this utility model.

[0017] Figure 3 This is a three-dimensional structural diagram of the ball head assembly of this utility model.

[0018] Figure 4 This is a three-dimensional structural diagram of the limiting unit of this utility model.

[0019] Figure 5 This is a three-dimensional structural diagram of the notch in this utility model.

[0020] The markings in the attached diagram are as follows: 1-Swing arm mounting plate, 11-Lower plate, 12-Upper plate, 13-Lower mounting hole, 14-Upper mounting hole, 15-Protrusion, 16-Limiting ring, 2-Bushing, 3-Ball head assembly, 31-Ball head seat, 32-Baffle, 33-Mounting groove, 34-Limiting unit, 341-Limiting block, 342-Bolt, 343-Threaded hole, 35-Ball head rod, 36-Dust cover, 37-Snap ring, 38-Mounting part, 39-Bevel, 310-Notch. Detailed Implementation

[0021] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0022] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] A type of automotive swing arm structure, such as Figure 1 As shown, it includes a swing arm mounting plate 1, a mounting hole in the middle of the swing arm mounting plate 1, and a ball head assembly 3 disposed in the mounting hole;

[0025] Among them, such as Figure 2 As shown, the swing arm mounting plate 1 includes a lower plate 11 and an upper plate 12. The upper plate 12 is inserted into the lower plate 11 and welded together to form the swing arm mounting plate 1. Bushings 2 are welded to both ends of the swing arm mounting plate 1. The bushings 2 are used to connect with the vehicle body. The middle part of the swing arm mounting plate 1 passes through the lower plate 11 and the upper plate 12 in sequence to form a lower mounting hole 13 and an upper mounting hole 14. The lower mounting hole 13 and the upper mounting hole 14 are combined to form a mounting hole, which is circular. The ball joint assembly 3 is detachably installed in the mounting hole.

[0026] like Figures 2-4As shown, the ball joint assembly 3 includes a ball joint seat 31, a ball joint rod 35 movably connected within the ball joint seat 31, a baffle 32 provided on the lower outer wall of the ball joint seat 31, a mounting groove 33 provided on the upper outer wall of the ball joint seat 31, and a retaining spring 37 provided at the mounting groove 33. The ball joint seat 31 passes through a mounting hole, and the retaining spring 37 and the baffle 32 restrict the ball joint seat 31 within the mounting hole. The ball joint assembly 3 also includes a plurality of limiting units 34 detachably connected to the ball joint seat 31. Each limiting unit 34 includes a limiting block 341 and a connector detachably connected to the limiting block 341 on the ball joint seat 31. The limiting block 341 abuts against the upper surface of the retaining spring 37.

[0027] Specifically, the ball joint 31 is cylindrical in shape and has an internal receiving hole for mounting the ball joint rod 35. The ball head of the ball joint rod 35 is located within the receiving hole, allowing the ball joint rod 35 to rotate in multiple directions on the ball joint 31. The body of the ball joint rod 35 extends out from the opening of the receiving hole and is used to connect with the automotive wheel assembly. The lower outer wall of the ball joint 31 extends outward to form a baffle 32. The baffle 32 is circular with a diameter larger than the diameter of the mounting hole. Alternatively, the baffle 32 can be welded to the outer wall of the ball joint 31. 31 is inserted into the mounting hole, and the baffle 32 is located on the lower outer side of the mounting hole; an arc-shaped mounting groove 33 is provided on the upper outer wall of the ball head seat 31, the mounting groove 33 is used to install the retaining spring 37, the retaining spring 37 is embedded in the mounting groove 33, and the diameter of the retaining spring 37 is larger than the diameter of the mounting hole, thereby restricting the ball head seat 31 within the mounting hole by the retaining spring 37 and the baffle 32; two limiting units 34 are provided in this embodiment and are symmetrically arranged. In other embodiments, they can be appropriately increased or decreased, which is not limited here; limiting unit 3 4 includes a limiting block 341 and a connecting member; the connecting member consists of a threaded hole 343 and a bolt 342; the bolt 342 passes through the limiting block 341 and is threadedly connected to the limiting block 341, and then the bolt 342 is threadedly connected to the threaded hole 343, thereby fixing the limiting block 341 to the ball head seat 31. The lower surface of the limiting block 341 contacts the upper surface of the retaining spring 37. When the ball head seat 31 is subjected to external force and moves downward, the retaining spring 37 contacts the upper surface of the swing arm mounting plate 1, and the two will be squeezed. To avoid the retaining spring 37 being squeezed, The axial deformation causes the ball head assembly to detach from the mounting groove 33. Therefore, a limiting block 341 is provided to prevent the retaining ring 37 from deforming axially, making it difficult for the retaining ring 37 to detach from the mounting groove 33. This makes it difficult for the ball head assembly 3 to detach from the rocker arm mounting plate 1, thus increasing safety. Of course, when it is necessary to remove the ball head assembly 3 from the rocker arm mounting plate 1, simply unscrew the bolt 342 from the threaded hole 343, then remove the retaining ring 37 from the mounting groove 33, and then pull the ball head seat 31 out of the mounting hole to complete the disassembly.

[0028] Furthermore, a limiting ring 16 is provided on the swing arm mounting plate 1. When the retaining ring 37 contacts the swing arm mounting plate 1, the retaining ring 37 is located inside the limiting ring 16.

[0029] Specifically, the limiting ring 16 is welded to the upper mounting hole 14 of the upper plate 12. In other embodiments, the limiting ring 16 can be integrally formed with the upper plate 12, and the diameter of the limiting ring 16 is slightly larger than the diameter of the retaining spring 37. When the diameter of the limiting ring 16 is smaller than the maximum diameter of the retaining spring 37 after outward deformation, when the ball joint 31 is subjected to external force and moves downward, the retaining spring 37 contacts the upper surface of the swing arm mounting plate 1, causing compression. The limiting ring 16 can restrict the radial deformation of the retaining spring 37, thereby preventing the retaining spring 37 from detaching from the mounting groove 33, thus allowing the ball joint assembly 3 to detach from the swing arm mounting plate 1, further increasing safety. Of course, when it is necessary to remove the retaining spring 37 from the mounting groove 33, the ball joint 31 needs to be moved upward, causing the ball joint 31 to move the retaining spring 37 out of the limiting ring 16. Figure 3 This is the state in which the retaining ring 37 is removed from the limiting ring 16, making it easier for people to remove the retaining ring 37 from the limiting ring 16.

[0030] Furthermore, such as Figure 2 As shown, a protrusion 15 is provided at the mounting hole of the swing arm mounting plate 1, and a mounting part 38 is provided on the outer wall of the ball head seat 31. When the ball head seat 31 is inserted into the mounting hole, the outer wall of the mounting part 38 is interference-fitted with the inner wall of the protrusion 15.

[0031] Specifically, the sidewall of the lower mounting hole 13 extends upward to form a protrusion 15. Of course, the protrusion 15 can also be welded to the lower mounting hole 13. The outer wall of the ball head seat 31 protrudes outward to form a mounting part 38. The mounting part 38 is integrally formed with the ball head seat 31. The top surface of the mounting part 38 slopes downward from the inside to the outside to form a slope 39. When the ball head seat 31 is inserted into the mounting hole, the slope 39 makes it easy for the mounting part 38 to enter the inner side of the protrusion 15. The outer wall of the mounting part 38 and the inner side of the protrusion 15 are interference-fitted, which can further make the ball head assembly 3 less likely to detach from the swing arm mounting plate 1.

[0032] like Figure 5 As shown, notches 310 are provided on both sides of the opening of the ball head seat 31.

[0033] It is understandable that the notch 310 can be used to increase the angle at which the club 35 swings toward the notch 310.

[0034] like Figure 3 As shown, a dust cover 36 is fitted between the opening of the ball head seat 31 and the outer wall of the ball head rod 35.

[0035] It is understood that one end of the dust cover 36 is fixedly connected to the opening of the ball head seat 31, and the other end is fixedly connected to the outer wall of the ball head rod 35. The dust cover 36 is made of soft material such as cloth or leather, so that the ball head rod 35 can rotate freely.

[0036] In summary, the limiting block 341 prevents the retaining ring 37 from deforming axially, making it difficult for the retaining ring 37 to detach from the mounting groove 33, thus preventing the ball joint assembly 3 from detaching from the rocker arm mounting plate 1 and increasing safety. Of course, when it is necessary to remove the ball joint assembly 3 from the rocker arm mounting plate 1, it is only necessary to unscrew the bolt 342 from the threaded hole 343, then remove the retaining ring 37 from the mounting groove 33, and then pull the ball joint seat 31 out of the mounting hole to complete the disassembly, achieving the effect of facilitating replacement and maintenance. In addition, the limiting ring 16 can limit the radial deformation of the retaining ring 37, thereby further preventing the retaining ring 37 from detaching from the mounting groove 33, thus preventing the ball joint assembly 3 from detaching from the rocker arm mounting plate 1 and increasing safety.

[0037] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A car swing arm structure, characterized in that, It includes a swing arm mounting plate, a mounting hole in the middle of the swing arm mounting plate, and a ball joint assembly disposed in the mounting hole; The ball joint assembly includes a ball joint seat, a ball joint rod movably connected within the ball joint seat, a baffle provided on the lower outer wall of the ball joint seat, a mounting groove provided on the upper outer wall of the ball joint seat, and a retaining spring provided at the mounting groove. The ball joint seat passes through the mounting hole, and the retaining spring and the baffle restrict the ball joint seat within the mounting hole. The ball joint assembly also includes several limiting units detachably connected to the ball joint seat. Each limiting unit includes a limiting block and a connector detachably connected to the limiting block on the ball joint seat. The limiting block abuts against the upper surface of the retaining spring.

2. The automotive swing arm structure according to claim 1, characterized in that, The connector includes a bolt and a threaded hole in the ball head seat. The limiting block is disposed on the outer wall of the bolt, and the bolt is screwed into the threaded hole.

3. The automotive swing arm structure according to claim 1, characterized in that, A limit ring is provided on the swing arm mounting plate. When the retaining spring contacts the swing arm mounting plate, the retaining spring is located inside the limit ring.

4. The automotive swing arm structure according to claim 3, characterized in that, The mounting hole of the swing arm mounting plate is provided with a protrusion, and the outer wall of the ball head seat is provided with a mounting part. When the ball head seat is inserted into the mounting hole, the outer wall of the mounting part and the inner wall of the protrusion are interference-fitted.

5. The automotive swing arm structure according to claim 4, characterized in that, The top surface of the mounting part slopes downwards from the inside out to form an inclined surface.

6. The automotive swing arm structure according to claim 1, characterized in that, Notches are provided on both sides of the opening of the ball head seat.

7. The automotive swing arm structure according to claim 1, characterized in that, A dust cover is fitted between the opening of the ball joint and the outer wall of the ball joint.

8. The automotive swing arm structure according to claim 1, characterized in that, The swing arm mounting plate includes a lower plate and an upper plate welded to the lower plate. The mounting holes include upper mounting holes and lower mounting holes respectively opened on the upper plate and the lower plate.

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