Structure for quickly connecting embedded-part-free composite material

Abstract

The utility model relates to a structure for quickly connecting a composite material without an embedded part, which belongs to the technical field of composite material assembly and is provided with a nut embedded on a first connecting plate, a through hole is arranged on the side wall of the nut, and a first mounting hole is arranged on the first connecting plate at a position corresponding to the through hole. A second mounting hole is formed in the position, corresponding to the nut, of the second connecting plate, the tail end of the screw penetrates through the first mounting hole and the second mounting hole to be in threaded connection with the nut, the structure is simple, and the connecting structure is stable.

Description

Technical Field

[0001] The utility model relates to the technical field of composite material assembly, in particular to a structure for quickly connecting composite materials without embedded parts. Background Art

[0002] Composite materials are made of multiple materials through a certain molding method. They are non-metallic materials. Composite materials are superior to metal materials in terms of specific strength, specific stiffness and light weight. In recent years, composite materials have developed rapidly. In modern aircraft manufacturing, more and more parts use composite material technology. Therefore, in aircraft assembly manufacturing, a large number of composite parts assembly and connection problems are involved. Generally, composite parts are connected in the form of gluing, riveting, screwing, etc. Among them, gluing can only be used for general parts with low strength requirements. Although riveting and screwing can increase the connection strength of composite materials, riveting requires support plate nuts, and the process is relatively complicated. For bolt connection, nuts are required to lock and fix on the other side of the composite material. For interior decorative composite materials, protruding from the surface of the composite material will destroy the smoothness and beauty of the decorative parts.

[0003] In the prior art, the patent with announcement number CN107538758A discloses a composite material connection method. During or after the molding of composite material parts, embedded nuts are embedded in the composite material. After curing, the composite material parts to be connected are connected by screws. This ensures the connection strength of the composite material parts while keeping the surface of the parts smooth, thus avoiding damage to the integrity of the composite material interior surface. Therefore, it has a high practical application value.

[0004] However, in reality, due to various reasons such as design or later requirements or workers' omissions during the production process, metal embedded parts are often omitted or placed in the wrong position. Therefore, the above-mentioned composite material connection structure needs to be improved. Utility Model Content

[0005] The technical problem to be solved by the utility model is aimed at the deficiencies of the prior art, and aims to solve the problem that composite materials can still be quickly and stably connected when metal embedded parts are missed or incorrectly positioned, and to provide a structure for quickly connecting composite materials without embedded parts.

[0006] The technical solution of the utility model to solve the above-mentioned technical problems is as follows: a structure for quickly connecting composite materials without embedded parts, comprising a first connecting plate and a second connecting plate for connecting mutually perpendicular plates, characterized in that it also comprises a fixing block and a screw, the upper end surface of the second connecting plate is provided with a plurality of mounting grooves, the fixing block is embedded in the mounting groove, the side wall of the fixing block is provided with a through hole perpendicular to the first connecting plate, the inner wall of the through hole is provided with an internal thread matching the external thread of the screw; a first mounting hole is provided on the first connecting plate at a position corresponding to the through hole, the first mounting hole is coaxially connected with the through hole through a second mounting hole provided on the second connecting plate, the screw is embedded in the first mounting hole and its end passes through the first mounting hole and the second mounting hole and is threadedly connected to the through hole.

[0007] Furthermore, the inner cavity of the mounting groove is similar in shape to the fixing block.

[0008] Furthermore, the mounting groove is a blind hole structure.

[0009] Furthermore, a strip groove is formed on the upper end surface of the fixing block, and the direction of the strip groove is parallel to the direction of the through hole.

[0010] Furthermore, the inner diameters of the first mounting hole and the second mounting hole are larger than the inner diameter of the through hole, and the shape of the screw matches the shapes of the first mounting hole, the second mounting hole and the through hole.

[0011] The beneficial effects of the utility model are as follows: the utility model is provided with a fixing block embedded in the first connecting plate, a through hole is opened on the side wall of the fixing block, a first mounting hole is opened on the first connecting plate at a position corresponding to the through hole, and a second mounting hole is opened on the second connecting plate at a position corresponding to the fixing block, so that the end of the screw passes through the first and second mounting holes and is threadedly connected to the fixing block, the structure is simple, and the connection structure is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0013] Figure 2 It is a perspective structural schematic diagram of the utility model;

[0014] Figure 3 It is a schematic diagram of the top view structure of the utility model;

[0015] Figure 4 It is a partial cross-sectional structural schematic diagram of the utility model;

[0016] In the figure: 1. first connecting plate, 2. second connecting plate, 3. mounting groove, 4. fixing block, 5. screw, 6. through hole, 7. first mounting hole, 8. second mounting hole, 9. strip groove. DETAILED DESCRIPTION

[0017] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The embodiments described are only used to explain the present invention and are not used to limit the scope of the present invention.

[0018] like Figures 1 to 4 As shown, a structure of a quick-connect composite material without embedded parts in the present embodiment includes a first connecting plate 1 and a second connecting plate 2 for connecting each other perpendicularly, and also includes a fixing block 4 and a screw 5. A plurality of mounting grooves 3 are formed on the upper end surface of the second connecting plate 2, and the fixing block 4 is embedded in the mounting groove 3. A through hole 6 perpendicular to the first connecting plate 1 is formed on the side wall of the fixing block 4, and an internal thread matching the external thread of the screw 5 is formed on the inner wall of the through hole 6; a first mounting hole 7 is formed on the first connecting plate 1 at a position corresponding to the through hole 6, and the first mounting hole 7 is coaxially connected with the through hole 6 through a second mounting hole 8 provided on the second connecting plate 2, and the screw 5 is embedded in the first mounting hole 7 and its end passes through the first mounting hole 7 and the second mounting hole 8 and is threadedly connected with the through hole 6.

[0019] In this embodiment, the inner cavity of the installation groove 3 is similar in appearance to the fixing block 4, and the installation groove 3 is a blind hole structure with a simple overall structure.

[0020] In this embodiment, a strip groove 9 is formed on the upper end surface of the fixing block 4 , and the direction of the strip groove 9 is parallel to the direction of the through hole 6 .

[0021] In this embodiment, the inner diameters of the first mounting hole 7 and the second mounting hole 8 are larger than the inner diameter of the through hole 6 , and the shape of the screw 5 matches the shapes of the first mounting hole 7 , the second mounting hole 8 and the through hole 6 .

[0022] When working, the operator opens multiple groups of mounting grooves 3 on the upper end surface of the second connecting plate 2, embeds the fixing block 4 in the mounting grooves 3, and adjusts the opening direction of the through hole 6 on the fixing block 4 to be consistent with the opening direction of the second mounting hole 8, inserts the screw 5 into the first mounting hole 7 and extends it toward the second connecting plate 2 until it passes through the second mounting hole 8 and is threadedly connected to the through hole 6, thereby realizing quick connection and fixation of the first connecting plate 1 and the second connecting plate 2.

[0023] The above embodiment is only one implementation of the utility model, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A structure for quickly connecting composite materials without embedded parts, comprising a first connecting plate (1) and a second connecting plate (2) for connecting the two plates perpendicular to each other, characterized in that: It also includes a fixing block (4) and a screw (5); the upper end surface of the second connecting plate (2) is provided with a plurality of mounting grooves (3); the fixing block (4) is embedded in the mounting grooves (3); the side wall of the fixing block (4) is provided with a through hole (6) perpendicular to the first connecting plate (1); the inner wall of the through hole (6) is provided with an internal thread matching the external thread of the screw (5); a first mounting hole (7) is provided on the first connecting plate (1) at a position corresponding to the through hole (6); the first mounting hole (7) is coaxially connected with the through hole (6) through a second mounting hole (8) provided on the second connecting plate (2); the screw (5) is embedded in the first mounting hole (7) and its end passes through the first mounting hole (7) and the second mounting hole (8) and is threadedly connected with the through hole (6).

2. A structure for quickly connecting composite materials without embedded parts according to claim 1, characterized in that: The inner cavity of the installation groove (3) is similar in appearance to the fixing block (4).

3. A structure of a composite material for quick connection without embedded parts according to claim 1, characterized in that: The installation groove (3) is a blind hole structure.

4. A structure for quickly connecting composite materials without embedded parts according to claim 1, characterized in that: The upper end surface of the fixing block (4) is provided with a strip groove (9), and the direction of the strip groove (9) is parallel to the direction of the through hole (6).

5. The structure of a quick-connect composite material without embedded parts according to claim 1, characterized in that: The inner diameters of the first mounting hole (7) and the second mounting hole (8) are greater than the inner diameter of the through hole (6), and the shape of the screw (5) matches the shapes of the first mounting hole (7), the second mounting hole (8) and the through hole (6).

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