CN-224214651-U - Connection structure and connecting piece

Abstract

The application provides a connecting structure and a connecting piece, which can realize relative rotation movement or torsion transmission within a certain range between two first connecting structures and two second connecting structures after winding and matching. Because the two connecting structures are wound, stable connection and movement guiding can be kept under the shape matching effect of the two adjacent spiral combining pieces when the two connecting structures rotate. Through spiral nested winding engagement, two spiral combination pieces are mutually wound and connected, and relative rotation movement or torsion transmission within a certain range can be realized between the two connection structures. The screw combination piece is in multipoint contact, stress concentration is effectively dispersed, structural fatigue resistance is improved, higher torque and axial load can be borne, fracture or failure is not easy to occur, strength between connection structures is improved, stability in the subsequent use process is guaranteed, and the situation that the screw combination piece cannot be used due to axial stress is avoided.

Inventors

• LI HAORAN
• CHEN BIN
• LIU GUANGXI
• MA ZONGLIANG

Assignees

• 铂力特(深圳)增材制造有限公司

Dates

Publication Date

20260508

Application Date

20250620

Claims (12)

1. 1. The connecting structure is characterized by comprising a first connecting structure and a second connecting structure; The first connecting structure and the second connecting structure comprise a base body and a spiral connector; a closed annular structure is formed between the spiral combining piece and the base body, and a connecting channel is formed between the spiral combining piece and the base body; The spiral combination piece of the first connecting structure and the spiral combination piece of the second connecting structure are mutually wound through the connecting channel, so that the first connecting structure and the second connecting structure form rotary connection or transmission connection.
2. 2. The connection of claim 1, wherein the screw coupling of the first connection is a clearance fit with the screw coupling of the second connection.
3. 3. The connection structure according to claim 1, wherein the base body is provided with a spiral groove, and the spiral connector is partially accommodated in the spiral groove on the base body.
4. 4. The connection according to claim 1, wherein the screw coupling comprises at least: the first spiral part is fixedly connected with the base body; The second spiral part is fixedly connected with the base body; and the axis of the first helical portion is collinear with the axis of the second helical portion.
5. 5. The connection structure according to claim 4, wherein the first spiral portion is spirally arranged in a first direction, and the second spiral portion is spirally arranged in a second direction, the first direction being the same as the second direction.
6. 6. The connection structure according to claim 4, wherein the first spiral portion is spirally arranged in a first direction, and the second spiral portion is spirally arranged in a second direction, the first direction being opposite to the second direction.
7. 7. The connecting structure according to claim 1, wherein the base body is a spiral structure, the spiral structure base body and the corresponding spiral combining piece are mutually wound through the connecting channel, and a closed annular structure is formed between the two ends of the spiral structure base body and the spiral combining piece, so that the spiral structure base body and the corresponding spiral combining piece form rotary connection or transmission connection.
8. 8. The connection structure according to any one of claims 1-7, wherein the connection structure is manufactured using 3D printing.
9. 9. A connector comprising at least two connection structures according to any one of claims 1 to 8, adjacent two of said connection structures being connected by the same substrate to form said connector.
10. 10. The connector of claim 9, wherein the helical engagement members on both sides of the same substrate are of opposite helical orientation.
11. 11. The connector of claim 9, wherein the helical engagement members on both sides of the same substrate are in the same helical orientation.
12. 12. The connector of claim 9, wherein the connector is manufactured using 3D printing.

Description

Connection structure and connecting piece Technical Field The application relates to the field of connecting pieces, in particular to a connecting structure and a connecting piece. Background The rotation and transmission between two adjacent structural members are required to be ensured, and a connecting structure is required to be adopted for connection so as to ensure the rotation range between two adjacent parts, such as a transmission chain, a robot crawler, a hinge, a rolling structure, a watchband, a folding screen floating plate and other mechanisms to rotate relatively. The existing connecting structure generally adopts a shaft connection mode, namely, two adjacent components are in pivot connection, and because the connecting structure can move left and right in the using process, axial movement is generated, and the stress area of fixed ends at two ends of the pivot structure is limited. When bearing large torque or axial load, local stress concentration is easy to occur due to low strength, and the materials are fatigued, deformed and even broken. Secondly, in the installation process, because the two ends of the pivot are fixed by adopting fixed ends, anchor points need to be formed at the end parts of the shaft in the installation and fixing process so as to ensure rotational connection, and the processing and installation processes are complex. Disclosure of utility model In view of the foregoing, it is necessary to provide a connecting structure and a connecting member for solving the above-mentioned problems. The embodiment of the application provides a connecting structure, which at least comprises a first connecting structure and a second connecting structure; The first connecting structure and the second connecting structure comprise a base body and a spiral connector; A closed annular structure is formed between the spiral combining piece and the matrix, and a connecting channel is formed between the spiral combining piece and the matrix; The spiral combination piece of the first connecting structure and the spiral combination piece of the second connecting structure are mutually wound through a connecting channel, so that the first connecting structure and the second connecting structure form rotary connection or transmission connection. In at least one embodiment of the present application, the helical bond of the first connection structure is a clearance fit with a helical bond of the second connection structure. In at least one embodiment of the present application, the substrate is provided with a spiral groove; the screw coupling portion is received in a screw groove on the base. In at least one embodiment of the present application, the screw coupler includes: the first spiral part is fixedly connected with the base body; The second spiral part is fixedly connected with the base body; and the axis of the first helical portion is collinear with the axis of the second helical portion. In at least one embodiment of the present application, the first spiral part is spirally arranged in a first direction, and the second spiral part is spirally arranged in a second direction, and the first direction is the same as the second direction. In at least one embodiment of the present application, the first spiral portion is spirally disposed in a first direction, and the second spiral portion is spirally disposed in a second direction, the first direction being opposite to the second direction. In at least one embodiment of the application, the substrate is a helical structure; The spiral structure base body and the corresponding spiral combination piece are mutually wound through the connecting channel, and a closed annular structure is formed between the two ends of the spiral structure base body and the spiral combination piece, so that the spiral structure base body and the corresponding spiral combination piece form rotary connection or transmission connection. A connector comprising at least two connection structures as claimed in any one of the preceding claims; and two adjacent connecting structures are connected through the same base body to form the connecting piece. In at least one embodiment of the present application, the spiral direction of the spiral bonds on both sides of the same substrate is opposite. In at least one embodiment of the present application, the spiral direction of the spiral bonding elements on both sides of the same substrate is the same. In at least one embodiment of the application, the connection structure is manufactured using 3D printing. In at least one embodiment of the application, the connector is manufactured using 3D printing. The implementation of the connecting structure and the connecting piece of the embodiment has at least the following beneficial effects: The connecting structure and the connecting piece provided by the above, each connecting structure comprises a base body, the base body is provided with the spiral combining piece, and the s