Mortise and tenon joint connecting piece

Abstract

The invention discloses a tenon-and-mortise connecting piece which comprises a connecting rod, a fastening ring and an anti-retreating ring. The tail end of the connecting rod is provided with a chamfer inclined inwards, the connecting rod is sleeved with a fastening ring, and the inner side of the fastening ring is in a wedge face shape. Mortises are formed in the inner sides of the connecting rod and the fastening ring, an anti-retreating ring with a wedge-shaped section is inserted between the mortises to serve as a tenon, and the connecting rod, the fastening ring and the anti-retreating ring form a stable mortise and tenon joint structure. According to the invention, the stress is surface, and loosening is not easy to occur; machining procedures are few, and production cost is low; in the using process, installation is easy, the fastening effect can be directly judged according to the position relation between the fastening ring and the anti-retreating ring, and the operation efficiency is higher.

Description

Technical Field

[0001] The present invention belongs to the field of porous connections of solids, and particularly relates to a mortise and tenon connector. Background Art

[0002] Currently, there are two ways of porous connections of solids: bolts and rivets. For the first solution, the bolt threads are inclined at a certain angle and are very likely to become loose after installation, and anti-loosening measures need to be taken or regular inspections are required. For the second solution, it is divided into cold riveting and hot riveting. Cold riveting achieves fastening through material deformation. Since the material hardness is lower than that of the connected parts, the load-bearing capacity is limited, such as aluminum blind rivets, etc. Hot riveting is only applicable to application scenarios with little influence of local heating, such as hot extrusion rivets used in bridges. Therefore, we need a connector (method) with a simple fastening method and less post-maintenance. Summary of the Invention

[0003] In view of the above problems, the present invention provides a mortise and tenon connector.

[0004] A mortise and tenon connector of the present invention includes a connecting rod, a fastening ring, and an anti-retreat ring; a chamfer inclined inward is provided at the end of the connecting rod, a fastening ring is sleeved on the connecting rod, and the inner side of the fastening ring is in a wedge shape; a mortise is formed between the connecting rod and the inner side of the fastening ring, and an anti-retreat ring with a wedge-shaped cross-section is inserted between the mortises as a tenon, and the connecting rod, the fastening ring, and the anti-retreat ring form a stable mortise and tenon structure.

[0005] Further, the connecting rod is integrally composed of three sections of cylinders: a fastening head, a limiting rod, and a taper head; the diameter of the fastening head is larger than that of the limiting rod, and it interacts with the fastening ring on the workpiece; the limiting rod passes through the workpiece to be connected; the taper head is provided with a chamfer at a fixed angle.

[0006] Further, the fastening ring is thicker on the left and thinner on the right. The inner and outer sides and the end face of the fastening ring are respectively a load-bearing surface, a protection surface, a fastening end, and an observation end; the load-bearing surface bears the pressure exerted by the anti-retreat ring and transmits it to the workpiece; the protection surface prevents the anti-retreat ring from loosening; the fastening end applies pressure to the workpiece; the observation end shows the fastening condition through the length of the anti-retreat ring exposed outside.

[0007] Further, the anti-retreat ring is provided with an opening groove and a plurality of tightening grooves. The inner and outer sides and the end face of the anti-retreat ring are respectively an anti-retreat surface, a force-transmitting surface, an introduction end, and a force-adding end; the anti-retreat surface cooperates with the taper head of the connecting rod to prevent the anti-retreat ring from coming out; the force-transmitting surface transmits the force exerted by the taper head of the connecting rod to the load-bearing surface of the fastening ring; the inner side of the introduction end is provided with a chamfer, which cooperates with the chamfer of the taper head of the connecting rod to achieve convenient introduction; the force-adding end bears the acting force applied by an external tool, so that the anti-retreat ring moves on the connecting rod and deforms.

[0008] Connection method of a mortise and tenon connector of the present invention: Insert the connecting rod into the workpiece to be connected, slip on the fastening ring from the fastening end, and then place the anti-retreat ring between the connecting rod and the fastening ring, i.e., the guiding end is inside and the force-applying end is outside. Squeeze the anti-retreat ring with a certain torque, and the anti-retreat ring deforms between the connecting rod and the fastening ring to achieve reliable connection of the workpiece.

[0009] The beneficial technical effects of the present invention are as follows:

[0010] 1. Compared with bolt connection, the force of bolt connection is local and it is easy to loosen, while the force of the present invention is distributed over a surface and it is not easy to loosen.

[0011] 2. Compared with rivets, the present invention is not restricted by materials and application scenarios.

[0012] 3. The present invention has fewer processing procedures and lower production costs.

[0013] 4. During the use of the present invention, the installation is simple, and the fastening effect can be directly judged according to the positional relationship between the fastening ring and the anti-retreat ring, and the operation efficiency is higher. Description of the Drawings

[0014] Figure 1 Schematic structural diagram of the mortise and tenon connector of the present invention.

[0015] Figure 2 Schematic structural diagram of the connecting rod.

[0016] Figure 3 Schematic structural diagram of the anti-retreat ring.

[0017] Figure 4 Schematic cross-sectional view of the anti-retreat ring.

[0018] Figure 5 Schematic diagram of the fastening ring.

[0019] Figure 6 Schematic cross-sectional view of the fastening ring.

[0020] Figure 7 Physical diagram of the parts of the mortise and tenon connector of the present invention.

[0021] Figure 8 Connection example of the mortise and tenon connector of the present invention.

[0022] In the figure: 1 - connecting rod; 11 - fastening head; 12 - limiting rod; 13 - taper head; 2 - anti-retreat ring; 21 - opening groove; 22 - tightening groove; 2a - force-applying end; 2b - force-transmitting surface; 2c - guiding end; 2d - anti-retreat surface; 3 - fastening ring; 3a - observation end; 3b - protective surface; 3c - fastening end; 3d - load-bearing surface. Detailed Embodiments

[0023] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0024] A mortise and tenon joint of the present invention is as follows Figure 1 As shown, it includes a connecting rod 1, a fastening ring 3 and an anti-backward ring 2; the end of the connecting rod 1 is provided with an inwardly inclined chamfer, the fastening ring 3 is sleeved on the connecting rod 1, and the inner side of the fastening ring 3 is wedge-shaped; mortise holes are formed on the inner sides of the connecting rod 1 and the fastening ring 3, and the anti-backward ring 2 with a wedge-shaped cross-section is inserted between the mortises as a tenon, and the connecting rod 1, the fastening ring 3 and the anti-backward ring 2 constitute a stable mortise and tenon structure.

[0025] Further, such as Figure 2 As shown, the connecting rod 1 is composed of three cylindrical sections: a fastening head 11, a limiting rod 12 and a tapered head 13; the fastening head 11 has a larger diameter than the limiting rod 12 and interacts with the fastening ring 3 on the workpiece; the limiting rod 12 passes through the connected workpiece; and the tapered head 13 is provided with a chamfer of a fixed angle.

[0026] Further, such as Figure 5 , Figure 6 As shown, the fastening ring 3 is thick on the left and thin on the right, and the inner and outer sides and end faces of the fastening ring 3 are respectively a load-bearing surface 3d, a protective surface 3b, a fastening end 3c and an observation end 3a; the load-bearing surface 3d bears the pressure applied by the anti-backward ring 2 and transmits it to the workpiece; the protective surface 3b prevents the anti-backward ring 2 from loosening; the fastening end 3c applies pressure to the workpiece; and the observation end 3a displays the fastening status through the exposed length of the anti-backward ring 2.

[0027] Further, such as Figure 3 As shown, the anti-retraction ring 2 is provided with an opening groove 21 and a plurality of tightening grooves 22. Figure 4 As shown, the inner and outer sides and the end faces of the anti-retreat ring 2 are respectively an anti-retreat surface 2d, a force transmission surface 2b, an introduction end 2c and a force-applying end 2a; the anti-retreat surface 2d cooperates with the tapered head 13 of the connecting rod 1 to prevent the anti-retreat ring 2 from slipping out; the force transmission surface 2b transmits the force applied by the tapered head 13 of the connecting rod 1 to the force-bearing surface 3d of the fastening ring 3; a chamfer is provided on the inner side of the introduction end 2c, which cooperates with the chamfer of the tapered head 13 of the connecting rod 1 to achieve convenient introduction; the force-applying end 2a bears the force applied by the external tool, so that the anti-retreat ring 2 moves on the connecting rod 1 and deforms.

[0028] The actual parts of a mortise and tenon joint of the present invention are as follows: Figure 7 shown.

[0029] A connection method of a mortise and tenon joint of the present invention: a connecting rod 1 is inserted into a workpiece to be connected, and a fastening end 3c is inserted into a fastening ring 3, and then an anti-retraction ring 2 is placed between the connecting rod 1 and the fastening ring 3, that is, the introduction end 2c is inside and the force-applying end 2a is outside, and the anti-retraction ring 2 is squeezed with a certain torque, and the anti-retraction ring 2 is deformed between the connecting rod 1 and the fastening ring 3 to achieve reliable connection of the workpieces. The final physical object is as followsFigure 8 as shown

[0030] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A mortise and tenon connector, characterized in that, The invention comprises a connecting rod (1), a fastening ring (3) and an anti-backward ring (2); the end of the connecting rod (1) is provided with an inwardly inclined chamfer, the fastening ring (3) is sleeved on the connecting rod (1), and the inner side of the fastening ring (3) is wedge-shaped; mortise holes are formed on the inner sides of the connecting rod (1) and the fastening ring (3), and an anti-backward ring (2) with a wedge-shaped cross section is inserted between the mortise holes as a tenon, and the connecting rod (1), the fastening ring (3) and the anti-backward ring (2) form a stable mortise and tenon structure.

2. The tenon-mortise connector according to claim 1, characterized in that, The connecting rod (1) is composed of three cylindrical sections, namely a fastening head (11), a limiting rod (12) and a tapered head (13); the fastening head (11) has a larger diameter than the limiting rod (12) and interacts with the fastening ring (3) on the workpiece; the limiting rod (12) passes through the connected workpiece; and the tapered head (13) is provided with a chamfer of a fixed angle.

3. The tenon-mortise connector according to claim 2, wherein, The fastening ring (3) is thick on the left and thin on the right, and the inner and outer sides and end faces of the fastening ring (3) are respectively a load-bearing surface (3d), a protective surface (3b), a fastening end (3c) and an observation end (3a); the load-bearing surface (3d) bears the pressure applied by the anti-backward ring (2) and transmits it to the workpiece; the protective surface (3b) prevents the anti-backward ring (2) from loosening; the fastening end (3c) applies pressure to the workpiece; and the observation end (3a) displays the fastening status through the exposed length of the anti-backward ring (2).

4. A mortise and tenon connector according to claim 3, characterized in that, The anti-retraction ring (2) is provided with an open groove (21) and a plurality of tightening grooves (22); the inner and outer sides and end faces of the anti-retraction ring (2) are respectively an anti-retraction surface (2d), a force transmission surface (2b), an introduction end (2c) and a force-applying end (2a); the anti-retraction surface (2d) cooperates with the tapered head (13) of the connecting rod (1) to prevent the anti-retraction ring (2) from falling out; the force transmission surface (2b) transmits the force applied by the tapered head (13) of the connecting rod (1) to the force-bearing surface (3d) of the fastening ring (3); a chamfer is provided on the inner side of the introduction end (2c) to cooperate with the chamfer of the tapered head (13) of the connecting rod (1) to achieve convenient introduction; the force-applying end (2a) bears the force applied by an external tool to cause the anti-retraction ring (2) to move on the connecting rod (1) and deform.

5. A connection method for a mortise and tenon connector according to any one of claims 1-4, characterized in that, The connecting rod (1) is inserted into the workpiece to be connected, and the fastening end (3c) is inserted into the fastening ring (3). Then, the anti-backward ring (2) is placed between the connecting rod (1) and the fastening ring (3), that is, the introduction end (2c) is inside and the force-applying end (2a) is outside. The anti-backward ring (2) is squeezed with a certain torque, and the anti-backward ring (2) is deformed between the connecting rod (1) and the fastening ring (3), thereby realizing a reliable connection of the workpieces.

Images