Shaft hole connecting structure

Abstract

The utility model discloses a shaft hole connecting structure which comprises a connecting plate, a connecting shaft and a plurality of buckle assemblies, the connecting plate is provided with a connecting hole, the connecting hole comprises a center hole and a plurality of grooves outwards formed in the radial direction of the center hole, the diameter of the center hole is the same as that of the connecting shaft, and the buckle assemblies are arranged on the connecting shaft. The multiple buckle assemblies are installed in the grooves respectively, the connecting shaft is inserted into the center hole, and the buckle assemblies abut against the surface of the connecting shaft. The shaft hole connecting structure has the advantages of being large in transmission torque and easy to assemble and disassemble.

Description

Technical Field

[0001] The utility model specifically relates to a shaft-hole connection structure. Background Technique

[0002] In the prior art, there are generally two ways of shaft-hole connection:

[0003] 1. Key connection. When connecting a shaft and a hole with a key, a flat key or a half-round key is usually used. Through the cooperation of the key and the notch, the connection between the shaft and the hole is realized. It has the advantages of firm connection and the ability to transmit large torque, but the assembly and disassembly processes are relatively troublesome, and the wear of the key will cause the connection to fail.

[0004] 2. Pin connection. A pin is used to connect the shaft and the hole, and a flat pin or a round pin is usually used. It has the advantages of convenient assembly and disassembly and simple structure, but the torque transmission ability is relatively weak and loosening is likely to occur. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a shaft-hole connection structure aiming at the above deficiencies existing in the prior art. The shaft-hole connection structure has a large torque transmission and the advantages of simple assembly and disassembly.

[0006] To solve the above problems, the utility model adopts the following technical solutions:

[0007] A shaft-hole connection structure includes a connecting plate, a connecting shaft, and a buckle assembly. A connecting hole is provided on the connecting plate. The connecting hole includes a central hole and a plurality of grooves radially opened outward along the central hole. The diameter of the central hole is the same as the diameter of the connecting shaft. The buckle assembly includes a plurality of components, and the plurality of buckle assemblies are respectively installed in the respective grooves. The connecting shaft is inserted into the central hole, and the buckle assembly abuts against the surface of the connecting shaft.

[0008] Preferably, the central angle between two adjacent grooves is 90°.

[0009] Preferably, the contact surface between the buckle assembly and the connecting shaft is arc-shaped, and the arc surface can be completely attached to the surface of the connecting shaft.

[0010] Preferably, the buckle assembly is detachable.

[0011] Preferably, the ratio of the depth of the groove to the diameter of the central hole ranges from 1 / 12 to 1 / 8.

[0012] The shaft-hole connection structure in the utility model has stable connection, can transmit a large torque, and its assembly and disassembly processes are simple, and the structure is simple. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of the shaft-hole connection structure in Embodiment 1 of the present utility model;

[0014] Figure 2 It is a schematic structural diagram of the connection hole in Embodiment 1 of the present utility model.

[0015] In the figure: 100 - connecting plate, 110 - connecting hole, 200 - connecting shaft, 300 - buckle assembly. Detailed implementation manners

[0016] Next, the technical solutions in the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without making creative efforts belong to the scope of the present utility model.

[0017] In the description of the present utility model, it should be noted that the terms such as "upper" indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of description and simplification, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0018] In the description of the present utility model, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "connection", "setting", "installation", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0020] The present utility model provides a shaft-hole connection structure, including a connecting plate, a connecting shaft, and a buckle assembly. A connecting hole is provided on the connecting plate. The connecting hole includes a central hole and a plurality of grooves radially opened outward along the central hole. The diameter of the central hole is the same as the diameter of the connecting shaft. The buckle assembly includes a plurality of them, and the plurality of buckle assemblies are respectively installed in each groove. The connecting shaft is inserted into the central hole, and the buckle assembly abuts against the surface of the connecting shaft.

[0021] Embodiment 1

[0022] Such as Figure 1 、2 As shown in 2 , this embodiment discloses a shaft-hole connection structure, which includes a connecting plate 100, a connecting shaft 200, and a buckle assembly 300. A connecting hole 110 is formed in the connecting plate 100. The connecting hole 110 includes a central hole and a plurality of grooves radially extending outward along the central hole (the central hole is a circular hole, and the grooves extend radially outward from the outer circumference of the central hole). The diameter of the central hole is the same as the diameter of the connecting shaft 200. The buckle assembly 300 includes a plurality of members, and the plurality of buckle assemblies 300 are respectively installed in the respective grooves. The connecting shaft 200 is inserted into the central hole, and the buckle assembly 300 abuts against the surface of the connecting shaft 200, thereby improving the connection firmness and stability between the connecting shaft 200 and the connecting hole 110.

[0023] As Figure 1 shown in Figure 1 , in this embodiment, a total of three grooves are provided, and the central angle between two adjacent grooves is 90°. The three grooves are respectively located directly above, on the left side, and on the right side of the central hole. Correspondingly, three buckle assemblies 300 are provided, and the three buckle assemblies 300 are respectively installed in the three grooves to abut against the connecting shaft 200.

[0024] Optionally, the number of grooves can be more than three, and the multiple grooves are evenly distributed at intervals along the circumferential direction of the central hole, thereby further improving the connection strength between the connecting shaft 200 and the connecting hole 110.

[0025] In this embodiment, the side of the buckle assembly 300 installed in the groove is in a shape adapted to the groove, and its contact surface with the connecting shaft 200 is an arc surface, and the arc surface can completely fit with the surface of the connecting shaft 200, thereby enhancing the clamping force between the buckle assembly 300 and the circular connecting shaft 200.

[0026] In this embodiment, the buckle assembly 300 is detachable, and the buckle assembly 300 is detachably installed in the groove of the connecting hole 110 by bolt connection, which is beneficial to the assembly and disassembly during the shaft-hole connection.

[0027] Specifically, the ratio range of the depth of the groove to the diameter of the central hole is 1 / 12 - 1 / 8. For example, when the diameter of the central hole is 100 mm, the depth range of the groove should be between 8.34 - 12.5 mm.

[0028] The installation process of the shaft-hole connection structure in this embodiment is as follows:

[0029] First, insert the connecting shaft 200 into the central hole;

[0030] Then, install the respective buckle assemblies 300 in the respective grooves of the connecting hole 110, and make the arc surface of the buckle assembly 300 fit with the outer surface of the connecting shaft 200.

[0031] The disassembly process of the shaft-hole connection structure in this embodiment is as follows:

[0032] First, loosen each buckle assembly 300 to remove it from the groove of the connection hole 110;

[0033] Then, pull out the connecting shaft 200 from the central hole.

[0034] In the shaft-hole connection structure of this embodiment, a plurality of grooves are opened outward on the outer circumference of the central hole, and the buckle assembly 300 is arranged in the grooves. The buckle assembly 300 can effectively fit and press against the connecting shaft 200 inserted in the central hole, thereby improving the connection strength between the connecting shaft 200 and the connection hole 110, further enabling the transmission of large torques, and the assembly and disassembly are also relatively convenient.

[0035] It can be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principle of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims

1. A shaft-hole connection structure, characterized in that: It comprises a connecting plate (100), a connecting shaft (200), and a buckle assembly (300). The connecting plate (100) is provided with a connecting hole (110), the connecting hole (110) comprising a central hole and a plurality of grooves radially outwardly provided along the central hole, the diameter of the central hole being the same as the diameter of the connecting shaft (200), The buckle assembly (300) comprises a plurality of buckle assemblies (300), and the plurality of buckle assemblies (300) are respectively installed in respective grooves. The connecting shaft (200) is inserted into the central hole, and the buckle assembly (300) is pressed against the surface of the connecting shaft (200).

2. The shaft-hole connection structure according to claim 1, characterized in that: The central angle between two adjacent grooves is 90°.

3. The shaft-hole connection structure according to claim 2, characterized in that: The contact surface between the buckle assembly (300) and the connecting shaft (200) is an arc surface, and the arc surface can completely fit with the surface of the connecting shaft (200).

4. The shaft-hole connection structure according to claim 3, characterized in that: The buckle assembly (300) is detachable.

5. The shaft-hole connection structure according to claim 1, characterized in that: The ratio of the depth of the groove to the diameter of the center hole is in the range of 1 / 12-1 / 8.

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