Autonomous operating apparatus

An autonomous operating apparatus, comprising:

• a main body mechanism, the main body mechanism comprising a first main body portion and a second main body portion, the first main body portion being configured to be connected to the second main body portion via an attachment unit,
• wherein the attachment unit comprises a first mating member, an elastic member and a second mating member;
• wherein the first mating member is integrally formed with the first main body portion or can be connected to the first main body portion via a first connecting structure;
• wherein the elastic member is configured such that the first end of the elastic member connects to the first mating member via a second connecting structure, and the second end of the elastic member connects to the second mating member via a third connecting structure;
• wherein the second mating member is integrally formed with the second main body portion or is connected to the second main body portion via a fourth connecting structure;
• wherein the third connecting structure is configured such that the second end of the elastic member is clamped and fixed between said second main body portion and said second mating member;
• and
• wherein the elastic member comprises a first part of the elastic member and a second part of the elastic member, and the outer diameter of the first part of the elastic member is smaller than the outer diameter of the second part of the elastic member;
• and when the third connecting structure is in a connected state, the second part of the elastic member is fixed between the second main body portion and the second mating member.