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CN-224210859-U - Fixing structure of lower swing arm of new energy automobile

CN224210859UCN 224210859 UCN224210859 UCN 224210859UCN-224210859-U

Abstract

The utility model discloses a fixing structure of a lower swing arm of a new energy automobile, which belongs to the technical field related to vehicle structures and comprises a frame, a first fixing seat, a first elastic flat gasket, a second fixing seat, a second elastic flat gasket, a lower swing arm, a third fixing seat, a third elastic flat gasket, a fourth fixing seat and a fourth elastic flat gasket, wherein the first fixing seat, the second fixing seat, the third fixing seat and the fourth fixing seat are of split structures and welded on the frame in pairs, so that the stress at the fixing seat is reduced, the strength at the fixing seat is improved, the hidden quality hazards that the fixing seat is cracked and broken under high load and long-time use are solved, the first spacer bush of the lower swing arm and the second spacer bush of the lower swing arm are connected with the fixing seat through the elastic flat gasket, the connection stability and reliability of the lower swing arm and the fixing seat are improved, the hidden quality hazards that the lower swing arm loosens and generates abnormal noise under high load and long-time use are solved, and the fixing structure is suitable for being further popularized and used by large and small car factories.

Inventors

  • Wu jinke
  • Xing Yaobang
  • LI ZIZHONG
  • ZHAO ZENGCHENG
  • HUANG MENG

Assignees

  • 山东本途新能源科技有限公司

Dates

Publication Date
20260508
Application Date
20250630

Claims (6)

  1. 1. The utility model provides a fixed knot of swing arm constructs under new energy automobile, includes frame (1), first elasticity flat washer (3), second elasticity flat washer (5), lower swing arm (6), third elasticity flat washer (8), fourth elasticity flat washer (10), characterized by: A first fixed seat (2), a second fixed seat (4), a third fixed seat (7) and a fourth fixed seat (9) are sequentially arranged on one side of the frame (1), and are welded and fixed on the frame (1) by adopting a welding process; The first fixing seat (2), the first elastic flat gasket (3), the lower swing arm first spacer (61), the second elastic flat gasket (5) and the second fixing seat (4) are sequentially connected and fixed together by hexagon head bolts; The third fixing seat (7), the third elastic flat gasket (8), the lower swing arm second spacer bush (62), the fourth elastic flat gasket (10) and the fourth fixing seat (9) are sequentially connected and fixed together by using a hexagon head bolt.
  2. 2. The fixing structure of the lower swing arm of the new energy automobile, which is disclosed in claim 1, is characterized in that the frame (1) is made of low-carbon low-silicon high-strength steel AG700L.
  3. 3. The fixing structure of the lower swing arm of the new energy automobile according to claim 1 is characterized in that the first fixing seat (2), the second fixing seat (4), the third fixing seat (7) and the fourth fixing seat (9) are all die stamping bending parts, the middle is a through hole, the upper side and the lower side are bent at 90 degrees, and the material is low-carbon low-silicon high-strength steel AG700L; The first fixing seat (2), the second fixing seat (4), the third fixing seat (7) and the fourth fixing seat (9) are all of split structures, and the excessive stress and the stress concentration between the fixing seats are avoided after the fixing seats are welded, and the first fixing seat (2) and the second fixing seat (4) are welded in pairs and are connected through hexagon head bolts to form an integral structure; The third fixing seat (7) and the fourth fixing seat (9) are welded in pairs and are connected through hexagon bolts to form an integral structure.
  4. 4. The structure for fixing the lower swing arm of the new energy automobile according to claim 1, wherein the first elastic flat gasket (3), the second elastic flat gasket (5), the third elastic flat gasket (8) and the fourth elastic flat gasket (10) are round, the middle is a through hole, the grinding process is firstly carried out to improve the surface flatness, then the punching forming and the heat treatment are carried out, and the material is low manganese spring steel 65Mn.
  5. 5. The fixing structure of the lower swing arm of the new energy automobile according to claim 1, wherein two end faces of a first spacer (61) of the lower swing arm are contacted with a first elastic flat washer (3) and a second elastic flat washer (5), and two end faces of a second spacer (62) of the lower swing arm are contacted with a third elastic flat washer (8) and a fourth elastic flat washer (10).
  6. 6. The fixing structure of the lower swing arm of the new energy automobile according to claim 1, wherein the first elastic flat gasket (3) is contacted with the first fixing seat (2), the second elastic flat gasket (5) is contacted with the second fixing seat (4), the third elastic flat gasket (8) is contacted with the third fixing seat (7), the fourth elastic flat gasket (10) is contacted with the fourth fixing seat (9), and the first elastic flat gasket (3), the second elastic flat gasket (5), the third elastic flat gasket (8) and the fourth elastic flat gasket (10) increase friction stress areas during working, so that the connection of the lower swing arm is enhanced.

Description

Fixing structure of lower swing arm of new energy automobile Technical Field The utility model belongs to the technical field related to vehicle structures, and particularly relates to a fixing structure of a lower swing arm of a new energy automobile. Background The novel energy automobile is characterized in that the front suspension comprises a lower swing arm, the lower swing arm is connected with a frame through a fixed seat, the fixed seat of the lower swing arm is of an integral structure and is welded with the frame, stress at the fixed seat is overlarge and concentrated, micro cracks are easily generated in the fixed seat to influence the strength of the fixed seat, the micro cracks can gradually expand under high load and long-time use to finally cause crack breakage at the fixed seat, the fixed seat is a die stamping part, a spacer sleeve of the lower swing arm is directly connected with the fixed seat through a hexagon head bolt, tiny irregularities exist on a contact surface of the fixed seat, the contact surface is extremely easy to generate stress concentration under high load and long-time use, the connection looseness of the lower swing arm is further caused, abnormal noise is caused in the running process of the vehicle, the fixed structure of the lower swing arm is needed in the market of the novel energy automobile, the hidden danger of crack breakage of the fixed seat under high load and long-time use is solved, the hidden danger of the quality breakage of the lower swing arm under high load and long-time use is improved, and the hidden danger of abnormal noise is avoided under high load and long-time use of the swing arm is avoided. Disclosure of utility model In order to solve the technical problems, the utility model provides a fixing structure of a lower swing arm of a new energy automobile. A fixing structure of a lower swing arm of a new energy automobile is characterized in that a first fixing seat, a second fixing seat, a third fixing seat and a fourth fixing seat are sequentially arranged on one side of a frame, and the first fixing seat, the second fixing seat, the third fixing seat and the fourth fixing seat are welded and fixed on the frame by adopting a welding process; The first fixing seat, the first elastic flat gasket, the first spacer bush of the lower swing arm, the second elastic flat gasket and the second fixing seat are sequentially connected and fixed together by a hexagon head bolt; The third fixing seat, the third elastic flat gasket, the lower swing arm second spacer, the fourth elastic flat gasket and the fourth fixing seat are sequentially connected and fixed together through a hexagon head bolt. Furthermore, the frame is made of low-carbon low-silicon high-strength steel AG700L. Further, the first fixing seat, the second fixing seat, the third fixing seat and the fourth fixing seat are all die stamping bending parts, the middle is a through hole, the upper side and the lower side are bent at 90 degrees, and the material is low-carbon low-silicon high-strength steel AG700L; The first fixing seat, the second fixing seat, the third fixing seat and the fourth fixing seat are all of split structures, and the excessive stress and the stress concentration between the first fixing seat and the second fixing seat are avoided after the fixing seats are welded; The third fixing seat and the fourth fixing seat are welded in pairs and are connected through a hexagon head bolt to form an integral structure. Further, the first elastic flat gasket, the second elastic flat gasket, the third elastic flat gasket and the fourth elastic flat gasket are round, a through hole is formed in the middle of the first elastic flat gasket, the surface flatness is improved through a grinding process, and then the first elastic flat gasket, the second elastic flat gasket, the third elastic flat gasket and the fourth elastic flat gasket are formed through stamping and heat treatment, and are made of low manganese spring steel 65Mn. Further, two end faces of the first spacer of the lower swing arm are contacted with the first elastic flat gasket and the second elastic flat gasket, and two end faces of the second spacer of the lower swing arm are contacted with the third elastic flat gasket and the fourth elastic flat gasket. Further, the first elastic flat gasket is in contact with the first fixing seat, the second elastic flat gasket is in contact with the second fixing seat, the third elastic flat gasket is in contact with the third fixing seat, the fourth elastic flat gasket is in contact with the fourth fixing seat, and the friction stress area is enlarged and the connection of the lower swing arm is enhanced when the first elastic flat gasket, the second elastic flat gasket, the third elastic flat gasket and the fourth elastic flat gasket work. The utility model has the following beneficial effects: 1. according to the fixing structure, the first fixing seat, the second fixing seat, the