CN213472689U

CN213472689U - Fine casting lower swing arm of automobile front suspension

Info

Publication number: CN213472689U
Application number: CN202022267359.9U
Authority: CN
Inventors: 宁士博
Original assignee: Danjiangkou Ningtai Auto Parts Co ltd
Current assignee: Danjiangkou Ningtai Auto Parts Co ltd
Priority date: 2020-10-13
Filing date: 2020-10-13
Publication date: 2021-06-18
Anticipated expiration: 2030-10-13

Abstract

The utility model discloses a swing arm under suspension precision casting before car, two swing arm castings, a plurality of fastening device and buffer gear under including longitudinal symmetry connection, the swing arm foundry goods all includes horizontal panel, turn-ups and bellying down, the border position department of horizontal panel all is provided with the turn-ups perpendicularly, the middle part of horizontal panel all is provided with the bellying, and symmetrical coincidence constitutes a cavity between two upper and lower bellyings, the inside of cavity is provided with a plurality of buffer gear, and buffer gear's both ends are contradicted with the inside wall of two upper and lower bellyings each other respectively, the hole has been visited to the inside central point of bellying department axial has been seted up, and all installs fastening device between the bellying of visiting the hole both sides. The utility model discloses not only reduce the dead weight by a wide margin to improved the assembly efficiency and the reliability of this lower swing arm, can offset outside vibrations moreover fast, thereby maintain the operation stability of this lower swing arm.

Description

Fine casting lower swing arm of automobile front suspension

Technical Field

The utility model relates to an automobile parts technical field specifically is a swing arm under car front suspension precision casting.

Background

The precisely cast lower swing arm of the front suspension of the automobile is one of the important components of the automobile suspension system. The existing lower swing arm is generally formed by welding a plurality of stamping steel sheets, the external profile is wide and thick, and a plurality of groups of stamping dies are adopted to stamp and weld a combined piece, so that the complete lower swing arm is cast.

However, the lower swing arm cast in the mode has the disadvantages of complex production operation process, excessive design weight, large welding stress and easy structural separation or deformation of products; and because the lower swing arm is in a working environment with large moving amplitude and long-term high-frequency vibration, and an effective anti-vibration mechanism is lacked, the product is easy to resonate, so that the product is in a state of violent swing and even skeleton fracture. Accordingly, those skilled in the art have provided a precision cast lower swing arm for a front suspension of an automobile to solve the above-mentioned problems of the background art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a swing arm under suspension precision casting before car to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a swing arm under car front suspension finish casting, includes two swing arm castings, a plurality of fastening device and buffer gear under upper and lower symmetric connection, the swing arm foundry goods all includes horizontal panel, turn-ups and bellying down, and pressfitting each other between two upper and lower horizontal panels, the border position department of horizontal panel all is provided with the turn-ups perpendicularly, the middle part of horizontal panel all is provided with the bellying, and symmetrical coincidence constitutes a cavity between two upper and lower bellyings, the inside of cavity is provided with a plurality of buffer gear, and buffer gear's both ends are contradicted each other with the inside wall of two upper and lower bellyings respectively, the inside central point of bellying puts the axial department and has seted up the exploration hole, and all installs fastening device between the bellying of exploration hole both sides.

As a further aspect of the present invention: the horizontal panel, the flanging and the protruding part are of an integrated structure.

As a further aspect of the present invention: the fastening mechanism comprises a bolt, gaskets, a spring and a nut, the bottom end of the bolt sequentially penetrates through the upper protruding portion and the lower protruding portion and is sleeved with the nut, the bolt is sleeved with the upper gasket and the lower gasket, and the gaskets are respectively in contact with the outer side walls of the upper protruding portion and the lower protruding portion.

As a further aspect of the present invention: the middle part cover of bolt is equipped with the spring, and the both ends of spring are contradicted each other with the inside wall of two upper and lower bellying respectively.

As a further aspect of the present invention: buffer gear includes rubber seat, first permanent magnetism piece, rubber cap and second permanent magnetism piece, the rubber seat is "protruding" type structure, and the top of rubber seat is fixed with first permanent magnetism piece, the outside cover of first permanent magnetism piece is equipped with the rubber cap, and the inside top of rubber cap is fixed with the second permanent magnetism piece.

As a further aspect of the present invention: and the homopolar sides of the first permanent magnet and the second permanent magnet are close to each other and form a mutual exclusion state.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the upper horizontal panel and the lower horizontal panel are pressed together, so that the upper protruding part and the lower protruding part are symmetrically overlapped to form a cavity and reduce the dead weight, the two groups of fastening mechanisms are arranged, the joint strength of the bolt and the nut is respectively enhanced by using the upper gasket and the lower gasket, and meanwhile, the spring is used for buffering and damping, so that the thread loosening is avoided, and the assembly efficiency and the reliability of the lower swing arm are improved;

2. through being provided with a plurality of buffer gear in the inside of cavity, when receiving outside vibrations or collision, the corresponding atress of rubber seat or rubber cap, vibrations utilize the homopolar mutually exclusive principle of first permanent magnetism piece and second permanent magnetism piece, eliminate vibrations fast to the operation of this lower swing arm is kept stable.

Drawings

FIG. 1 is a schematic perspective view of a precision cast lower swing arm of a front suspension of an automobile;

FIG. 2 is an exploded view of a fastening mechanism in a precision cast lower swing arm of an automotive front suspension;

FIG. 3 is a schematic structural diagram of an enlarged cross section of a damping mechanism in a precision cast lower swing arm of an automobile front suspension.

In the figure: 1. a lower swing arm casting; 101. a horizontal panel; 102. flanging; 103. a boss portion; 2. probing a hole; 3. a fastening mechanism; 301. a bolt; 302. a gasket; 303. a spring; 304. a nut; 4. a buffer mechanism; 401. a rubber seat; 402. a first permanent magnet; 403. a rubber cap; 404. and the second permanent magnet block.

Detailed Description

Referring to fig. 1-3, in the embodiment of the present invention, an automotive front suspension precision casting lower swing arm comprises two lower swing arm castings 1 connected in an up-down symmetrical manner, a plurality of fastening mechanisms 3 and a buffer mechanism 4, wherein each of the lower swing arm castings 1 comprises a horizontal panel 101, a flange 102 and a boss 103, the upper and lower horizontal panels 101 are pressed together, the flanges 102 are vertically arranged at the edge of the horizontal panels 101, the middle of the horizontal panels 101 is provided with a convex part 103, and the upper and lower convex parts 103 are weighed and combined to form a cavity, a plurality of buffer mechanisms 4 are arranged in the cavity, and the both ends of buffer gear 4 are contradicted with the inside wall of two upper and lower bellying 103 each other respectively, and the central point department of the inside of bellying 103 has seted up and has visited hole 2 axially, and all installs fastening device 3 between the bellying 103 of visiting hole 2 both sides.

In fig. 1 and 2: the horizontal panel 101, the flanging 102 and the protruding part 103 are of an integrated structure, and are produced by integrated injection molding, so that the welding stress among the tailor-welded structures is reduced; the fastening mechanism 3 comprises a bolt 301, a gasket 302, a spring 303 and a nut 304, the bottom end of the bolt 301 sequentially penetrates through the upper boss 103 and the lower boss 103 and is sleeved with the nut 304, the bolt 301 is sleeved with the upper gasket 302 and the lower gasket 302, and the gaskets 302 are respectively contacted with the outer side walls of the upper boss 103 and the lower boss 103 for auxiliary fastening and avoiding structure separation; a spring 303 is sleeved in the middle of the bolt 301, and two ends of the spring 303 are respectively abutted against the inner side walls of the upper boss 103 and the lower boss 103, so that the buffer and the shock absorption are realized, and the looseness or the damage of the threaded connection is avoided;

in fig. 3: the buffer mechanism 4 comprises a rubber seat 401, a first permanent magnet 402, a rubber cap 403 and a second permanent magnet 404, the rubber seat 401 is of a convex structure, the first permanent magnet 402 is fixed at the top end of the rubber seat 401, the rubber cap 403 is sleeved outside the first permanent magnet 402, and the second permanent magnet 404 is fixed at the top end inside the rubber cap 403 and used for multi-point high-efficiency buffering and vibration damage reduction; the homopolar sides of the first permanent magnet 402 and the second permanent magnet 404 are close to each other and form a mutual exclusion state, so that the long-term maintenance of the buffering action is ensured.

The utility model discloses a theory of operation is: firstly, an upper horizontal panel 101 and a lower horizontal panel 101 are pressed together, so that the upper boss 103 and the lower boss 103 are symmetrically overlapped to form a cavity, the total weight of the formed lower swing arm is greatly reduced, two groups of fastening mechanisms 3 are arranged for auxiliary clamping, and the upper part and the lower part are prevented from being separated or deflected, wherein the joint strength of the bolt 301 and the nut 304 is respectively enhanced by using the upper gasket 302 and the lower gasket 302, and meanwhile, the spring 303 is used for buffering and damping, so that the threaded connection is prevented from being loosened or damaged, and the assembly efficiency and the reliability of the lower swing arm are improved;

in addition, a plurality of buffer mechanisms 4 are arranged in the cavity through the probe holes 2, when external vibration or collision is received, the rubber seat 401 or the rubber cap 403 is correspondingly stressed and transmits vibration, and at the moment, the external vibration is quickly counteracted through micro-extension by utilizing the principle that the first permanent magnet block 402 and the second permanent magnet block 404 have homopolar mutual exclusion, so that the stable operation of the lower swing arm is maintained.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A precision casting lower swing arm of an automobile front suspension comprises two lower swing arm castings (1) which are connected in an up-down symmetrical mode, a plurality of fastening mechanisms (3) and buffer mechanisms (4), and is characterized in that the lower swing arm castings (1) comprise horizontal panels (101), turned edges (102) and protruding portions (103), the upper horizontal panel (101) and the lower horizontal panel (101) are pressed together, the turned edges (102) are vertically arranged at the edge positions of the horizontal panels (101), the middle portions of the horizontal panels (101) are provided with the protruding portions (103), the upper protruding portions (103) and the lower protruding portions (103) are symmetrically overlapped to form a cavity, the buffer mechanisms (4) are arranged inside the cavity, two ends of each buffer mechanism (4) are respectively abutted against the inner side walls of the upper protruding portion (103) and the lower protruding portion (103), and a probing hole (2) is axially formed in the center position of the inside of the protruding portions (103), and fastening mechanisms (3) are arranged between the convex parts (103) at the two sides of the probing hole (2).

2. The automotive front suspension precision casting lower swing arm according to claim 1 is characterized in that the horizontal panel (101), the flanging (102) and the protruding part (103) are of an integrated structure.

3. The automotive front suspension precision casting lower swing arm according to claim 1 is characterized in that the fastening mechanism (3) comprises a bolt (301), a gasket (302), a spring (303) and a nut (304), the bottom end of the bolt (301) sequentially penetrates through the upper boss part and the lower boss part (103) and is sleeved with the nut (304), the bolt (301) is sleeved with the upper gasket (302) and the lower gasket (302), and the gaskets (302) are respectively contacted with the outer side walls of the upper boss part and the lower boss part (103).

4. The automotive front suspension precision casting lower swing arm according to claim 3 is characterized in that a spring (303) is sleeved in the middle of the bolt (301), and two ends of the spring (303) respectively abut against the inner side walls of the upper protruding part and the lower protruding part (103).

5. The automotive front suspension precision casting lower swing arm according to claim 1 is characterized in that the buffer mechanism (4) comprises a rubber seat (401), a first permanent magnet (402), a rubber cap (403) and a second permanent magnet (404), wherein the rubber seat (401) is of a convex structure, the first permanent magnet (402) is fixed at the top end of the rubber seat (401), the rubber cap (403) is sleeved outside the first permanent magnet (402), and the second permanent magnet (404) is fixed at the top end inside the rubber cap (403).

6. The automotive front suspension precision casting lower swing arm according to claim 5 is characterized in that the homopolar sides of the first permanent magnet (402) and the second permanent magnet (404) are close to each other and form a mutual exclusion state.