Automatic lifting screw structure for underframe

Abstract

The utility model relates to the technical field of screw structures, and discloses an automatic lifting screw structure for an underframe, which comprises a screw rod, a screw rod, a screw rod and a screw rod, the reinforcing rod is arranged on the right side of the screw rod, and a screw tip is installed at the right end of the reinforcing rod; the connecting rod is arranged at the right end of the screw rod, a connecting groove is formed in an inner cavity of the reinforcing rod, and the connecting rod is inserted into an inner cavity of the connecting groove; and the extrusion head is arranged at the right end of the connecting rod. A connecting rod can be driven to be inserted into an inner cavity of a connecting groove by rotating a screw head, and an extrusion head can extend into the connecting groove to extrude the inner wall of the connecting groove, so that the outer circle of a reinforcing rod can be increased, the inner wall of a connecting hole of an automatic lifting bottom frame can be extruded, and the friction force between the reinforcing rod and the connecting hole is increased; and the screws are not prone to falling off from the connecting holes when being vibrated, and the firmness of the screws for installing the automatic lifting bottom frame is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screw structures, in particular to a screw structure for an automatically lifting chassis. Background Technique

[0002] A screw is a fastener widely used in mechanical engineering, which connects two or more components through threads. The basic function of a screw is to firmly connect these components together while allowing disassembly when necessary.

[0003] A common screw structure generally uses a screw head to receive tools (such as a screwdriver or wrench) to apply torque, thereby tightening or loosening the screw. The screw is tightened by the cooperation of the screw rod and the internal thread, and the screw tip is used to guide the screw into the hole of the component to be connected.

[0004] However, since the automatically lifting chassis will inevitably generate vibrations during operation, the vibrations will also drive the screws to vibrate. The screws are prone to displacement when in a long-term vibrating state, and the connection between the screws and the automatically lifting chassis is also prone to looseness, resulting in the looseness of the installation of the screws on the automatically lifting chassis. Content of the Utility Model

[0005] (I) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the utility model provides a screw structure for an automatically lifting chassis to solve the problems that the screws are prone to displacement when in a long-term vibrating state, the connection between the screws and the automatically lifting chassis is also prone to looseness, resulting in the looseness of the installation of the screws on the automatically lifting chassis as mentioned in the above background technique.

[0007] (II) Technical Solutions

[0008] To achieve the above object, the utility model provides the following technical solution: A screw structure for an automatically lifting chassis, comprising:

[0009] A screw rod, with a screw head installed at the left end of the screw rod;

[0010] A reinforcing rod, arranged on the right side of the screw rod, with a screw tip installed at the right end of the reinforcing rod;

[0011] A connecting rod, arranged at the right end of the screw rod. A connection groove is formed in the inner cavity of the reinforcing rod, and the connecting rod is inserted into the inner cavity of the connection groove;

[0012] An extrusion head, arranged at the right end of the connecting rod. A positioning groove is formed in the inner cavity of the reinforcing rod, and the connection groove communicates with the inner cavity of the positioning groove. The extrusion head is larger than the inner cavity of the positioning groove.

[0013] Preferably, the screw head is designed as a hexagon, and an internal hexagon groove is formed on the surface of the screw head. A cross groove is formed on the inner wall of the internal hexagon groove. The internal hexagon groove and the cross groove enable different tools to be used to tighten the screw.

[0014] Preferably, a plurality of limiting blocks are evenly installed on the surface of the connecting rod. Limiting grooves are formed at the corresponding positions on the inner wall of the connecting groove. The limiting blocks are inserted into the inner cavities of the limiting grooves. The limiting blocks and the limiting grooves enable the reinforcing rod to rotate along with the screw rod.

[0015] Preferably, a retaining edge is provided in the inner cavity of each limiting groove. The retaining edges are all installed on the left side of the limiting grooves. The retaining edges can prevent the limiting blocks from falling off the limiting grooves, thereby preventing the reinforcing rod from falling off the surface of the screw rod.

[0016] Preferably, a first gasket is provided on the surface of the screw rod. The first gasket is designed as a ring and is sleeved on the surface of the screw rod. The first gasket can adjust the pre-tightening force of the screw rod and prevent the screw rod from loosening.

[0017] Preferably, a second gasket is provided on the surface of the connecting rod. The second gasket is also designed as a ring and is sleeved on the surface of the connecting rod. The second gasket can prevent the reinforcing rod from loosening.

[0018] Beneficial effects

[0019] Compared with the prior art, the present utility model provides a screw structure for an automatically lifting chassis, which has the following beneficial effects:

[0020] For the screw structure for the automatically lifting chassis, by rotating the screw head, the connecting rod can be driven to insert into the inner cavity of the connecting groove, and the extrusion head will extend into the connecting groove to extrude the inner wall of the connecting groove. Thereby, the outer ring of the reinforcing rod can be lifted, and the inner wall of the connecting hole of the automatically lifting chassis can be extruded, increasing the friction between the reinforcing rod and the connecting hole, so that the screw is not easily detached from the connecting hole when vibrating, improving the firmness of the installation of the screw on the automatically lifting chassis. Description of the drawings

[0021] Figure 1 It is a left view structural schematic diagram of the present utility model;

[0022] Figure 2 It is a right view structural schematic diagram of the present utility model;

[0023] Figure 3 It is an exploded three-dimensional view of the reinforcing rod of the present utility model;

[0024] Figure 4 It is a sectional structural schematic diagram of the reinforcing rod of the present utility model;

[0025] Figure 5 This is a schematic structural view of the screw head of the present utility model.

[0026] In the figure: 1, screw rod; 2, screw head; 3, reinforcing rod; 4, screw tip; 5, connecting rod; 6, connecting groove; 7, extrusion head; 8, positioning groove; 9, internal hexagonal groove; 10, cross groove; 11, limiting block; 12, limiting groove; 13, retaining edge; 14, first gasket; 15, second gasket. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0028] The present utility model provides a technical solution, a screw structure for an automatically lifting chassis. Please refer to Figure 1 , including a screw rod 1, and a screw head 2 is installed at the left end of the screw rod 1;

[0029] A reinforcing rod 3 is arranged on the right side of the screw rod 1, and a screw tip 4 is installed at the right end of the reinforcing rod 3;

[0030] Please refer to Figure 2 , a connecting rod 5 is arranged at the right end of the screw rod 1. Please refer to Figure 3 , a connecting groove 6 is formed in the inner cavity of the reinforcing rod 3, and the connecting rod 5 is inserted into the inner cavity of the connecting groove 6;

[0031] An extrusion head 7 is arranged at the right end of the connecting rod 5. A positioning groove 8 is formed in the inner cavity of the reinforcing rod 3. The inner cavities of the connecting groove 6 and the positioning groove 8 are communicated. The extrusion head 7 is larger than the inner cavity of the positioning groove 8;

[0032] By rotating the screw head 2, the screw rod 1 can be driven to rotate, so that the reinforcing rod 3 can be driven to rotate and be screwed into the connecting hole of the automatically lifting chassis. When the screw head 2 is rotated subsequently, the connecting rod 5 will be driven to insert into the inner cavity of the connecting groove 6, and the extrusion head 7 will extend into the connecting groove 6 to extrude the inner wall of the connecting groove 6, thereby being able to improve the outer ring of the reinforcing rod 3 and extrude the inner wall of the connecting hole of the automatically lifting chassis, increasing the friction between the reinforcing rod 3 and the connecting hole, making the screw not easily fall off from the connecting hole when vibrating, and improving the firmness of the screw installation on the automatically lifting chassis.

[0033] Please refer to Figure 5, the screw head 2 is designed as a hexagon. An internal hexagonal groove 9 is provided on the surface of the screw head 2, and a cross groove 10 is provided on the inner wall of the internal hexagonal groove 9. The internal hexagonal groove 9 and the cross groove 10 enable different tools to be used to tighten the screw.

[0034] Please refer to Figure 4 , a limiting block 11 is evenly installed on the surface of the connecting rod 5. Limiting grooves 12 are provided at the corresponding positions on the inner wall of the connecting groove 6. The limiting blocks 11 are inserted into the inner cavities of the limiting grooves 12. The limiting blocks 11 and the limiting grooves 12 enable the reinforcing rod 3 to rotate along with the screw rod 1.

[0035] A retaining edge 13 is provided in the inner cavity of each limiting groove 12. The retaining edges 13 are all installed on the left side of the limiting grooves 12. The retaining edges 13 can prevent the limiting blocks 11 from falling out of the limiting grooves 12, thereby preventing the reinforcing rod 3 from falling off the surface of the screw rod 1.

[0036] Please refer to Figure 2 , a first gasket 14 is provided on the surface of the screw rod 1. The first gasket 14 is designed as a ring and is sleeved on the surface of the screw rod 1. The first gasket 14 can adjust the pre-tightening force of the screw rod 1 and prevent the screw rod 1 from loosening.

[0037] A second gasket 15 is provided on the surface of the connecting rod 5. The second gasket 15 is also designed as a ring and is sleeved on the surface of the connecting rod 5. The second gasket 15 can prevent the reinforcing rod 3 from loosening.

[0038] First, the internal hexagonal groove 9 and the cross groove 10 of this device enable different tools to be used to tighten the screw. Using a tool to drive the screw head 2 to rotate, the screw head 2 can drive the screw rod 1 to rotate. The limiting blocks 11 are inserted into the inner cavities of the limiting grooves 12. The limiting blocks 11 and the limiting grooves 12 enable the reinforcing rod 3 to rotate along with the screw rod 1, so that the reinforcing rod 3 can be driven to rotate and be screwed into the connecting hole of the automatically lifting chassis. Then, when the screw head 2 is continuously rotated, the connecting rod 5 will be driven to insert into the inner cavity of the connecting groove 6, and the extrusion head 7 will extend into the connecting groove 6 to extrude the inner wall of the connecting groove 6, thereby raising the outer ring of the reinforcing rod 3 and being able to extrude the inner wall of the connecting hole of the automatically lifting chassis, increasing the friction between the reinforcing rod 3 and the connecting hole, making the screw not easily fall out of the connecting hole when vibrating. Finally, the first gasket 14 can adjust the pre-tightening force of the screw rod 1 and prevent the screw rod 1 from loosening, and the second gasket 15 can prevent the reinforcing rod 3 from loosening, improving the firmness of the screw installation on the automatically lifting chassis.

[0039] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0040] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A screw structure for an automatically lifting chassis, characterized in that: include: A screw rod (1), the left end of which is provided with a screw head (2); a reinforcement rod (3), which is arranged on the right side of the screw rod (1), the right end of which is provided with a screw tip (4); a connecting rod (5), which is arranged on the right end of the screw rod (1), the inner cavity of which is provided with a connecting groove (6), the connecting rod (5) being inserted into the inner cavity of the connecting groove (6); an extrusion head (7), which is arranged on the right end of the connecting rod (5), the inner cavity of which is provided with a positioning groove (8), the connecting groove (6) being communicated with the inner cavity of the positioning groove (8), the extrusion head (7) being larger than the inner cavity of the positioning groove (8).

2. The screw structure for an automatically lifting chassis according to claim 1, characterized in that: The screw head (2) is of hexagonal design, a hexagonal groove (9) is provided on the surface of the screw head (2), and a cross groove (10) is provided on the inner wall of the hexagonal groove (9).

3. The screw structure for an automatically lifting chassis according to claim 1, characterized in that: Limiting blocks (11) are evenly mounted on the surface of the connecting rod (5), limiting grooves (12) are provided at positions corresponding to the inner wall of the connecting groove (6) and the limiting blocks (11), and the limiting blocks (11) are inserted into the inner cavities of the limiting grooves (12).

4. The screw structure for an automatically lifting chassis according to claim 3, characterized in that: The inner cavity of the limiting groove (12) is provided with a stop edge (13), and the stop edge (13) is installed on the left side of the limiting groove (12).

5. The screw structure for an automatically lifting chassis according to claim 1, characterized in that: A first gasket (14) is provided on the surface of the screw rod (1); the first gasket (14) is annular in design and sleeved on the surface of the screw rod (1).

6. The screw structure for an automatically lifting chassis according to claim 1, characterized in that: A second gasket (15) is provided on the surface of the connecting rod (5); the second gasket (15) is also annular in design, and the second gasket (15) is sleeved on the surface of the connecting rod (5).

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