Combined screw

Abstract

The utility model discloses a combined screw which comprises a connecting rod, a rubber plug cap is arranged above the connecting rod, a lubricating mechanism is installed on the top of the connecting rod, the lubricating mechanism comprises a lubricating box fixedly arranged on the outer surface of the top end of the rubber plug cap, and the two sides of the inner wall of the bottom end of the lubricating box are symmetrically arranged to be inclined faces. Lubricating sponges are symmetrically and fixedly bonded to the inclined face of the bottom end of the lubricating box, an extrusion plate is arranged above the lubricating sponges in a suspended and parallel mode, a movable rod is vertically fixed to the upper surface of the extrusion plate and movably penetrates through the lubricating box, the upper end of the movable rod penetrates through the shell wall of the lubricating box to extend outwards, and the movable rod is sleeved with a spring. The spring is fixedly connected between the surface of the extrusion plate and the inner wall of the top end of the lubricating box. When the device is used, the movable rod drives the extrusion plate to compress the lubricating sponge, so that lubricating oil filled in the lubricating sponge flows out through the lubricating pipe, then flows into the oil injection channel and overflows through the oil injection hole to lubricate the surface of the screw rod, and the device is very convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to screw technical field especially relates to a combined screw. BACKGROUND

[0002] The combined screw is a part that can be seen everywhere in daily life, and various furniture and electrical appliances inevitably use screws in the installation process.

[0003] According to the content disclosed in the patent document with the public number CN219220986U, an oil injection hole is vertically arranged from the screw head to the screw rod, and a plurality of oil seepage holes are arranged on the surface of the screw rod. When the screw to be disassembled is difficult to twist due to rust, lubricating oil is injected into the oil injection hole, the lubricating oil enters the screw rod along the oil injection hole, and then seeps out of the screw rod through the oil seepage holes to lubricate the surface of the screw rod. However, the mechanism for injecting lubricating oil directly on the screw is not provided, and it is not possible to predict whether the screw is rusty during the disassembly process. If the screw is disassembled at zero time, the operator does not carry lubricating oil, and the rusty screw cannot be disassembled, which is very troublesome. UTILITY MODEL CONTENT

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a combined screw, the movable rod drives the extrusion plate to compress the lubricating sponge, so that the lubricating oil filled in the lubricating sponge can flow out through the lubricating pipe, then flow into the oil injection channel, and overflow through the oil injection hole to lubricate the surface of the screw rod. The screw has a self-lubricating mechanism, which is very convenient to use.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: a combined screw, comprising a connecting rod, a rubber plug cap is arranged above the connecting rod, a lubricating mechanism for lubricating the screw is installed on the top of the connecting rod, the lubricating mechanism comprises a lubricating box fixedly arranged on the outer surface of the top end of the rubber plug cap, the bottom end inner wall of the lubricating box is symmetrically arranged as an inclined surface, lubricating sponges are symmetrically fixed and bonded on the inclined surfaces on both sides of the bottom end of the lubricating box, and extrusion plates are suspended above the lubricating sponges and arranged in parallel.

[0006] Further, the upper end of the movable rod extends outward through the shell wall of the lubricating box, a handle is fixedly arranged on the top end of the movable rod, an active slot is arranged on the top end shell wall of the lubricating box and corresponds to the movable rod, and the movable rod is movably arranged in the active slot.

[0007] Still further, a spring is sleeved outside the movable rod, and the spring is fixedly connected between the surface of the extrusion plate and the top end inner wall of the lubricating box.

[0008] Further, the two inclined surfaces of the inner wall of the bottom end of the lubricating box are connected with a through groove, the through groove penetrates the bottom of the lubricating box and extends downward into the rubber plug cap, a lubricating pipe is fixedly connected to the bottom end of the outer wall of the rubber plug cap and corresponds to the through groove, and the through groove and the lubricating pipe are in communication.

[0009] As a preferred technical scheme of the utility model, the top of the connecting rod is fixedly provided with a screw head, the rubber plug cap is clamped in the groove on the upper surface of the screw head, a circular arc protruding edge is arranged on the outer surface of the rubber plug cap, the circular arc protruding edge is clamped in the clamping groove on the wall surface of the groove and corresponds to the clamping groove, and the bottom of the groove is connected with a cross groove arranged in the screw head.

[0010] As a preferred technical scheme of the utility model, the lower end of the connecting rod is fixedly connected with a threaded rod, a gasket is arranged on the outer sliding sleeve, an oil injection channel is vertically arranged in the inner threaded rod, the upper end of the oil injection channel is in communication with the cross groove, the lower end of the lubricating pipe is inserted into the oil injection channel, a plurality of oil injection holes are arranged on the outer surface of the connecting rod, each oil injection hole is in communication with the oil injection channel, and the oil injection holes are arranged in a downward inclined manner in the threaded rod.

[0011] Further, as described in the patent document with the publication number CN219220986U, the strength of the threaded rod is reduced due to the arrangement of the oil injection channel and the oil injection hole, so that in order to meet the use standard of the threaded rod, high-strength materials are required to be selected for the threaded rod, and the strength of the threaded rod is improved through heat treatment and other treatments.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The device is provided with a movable rod, a spring, a pressing plate, a lubricating sponge, a lubricating pipe, and the like, the movable rod is pressed to drive the pressing plate to compress the lubricating sponge, the lubricating oil filled in the lubricating sponge flows out through the lubricating pipe, flows into the oil injection channel, and then overflows through the oil injection hole to lubricate the surface of the threaded rod, and the screw is provided with a lubricating mechanism, so that the device is very convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model;

[0015] Figure 2 It is a structural schematic view of the lubricating mechanism of the utility model;

[0016] Figure 3 It is a front view of the utility model;

[0017] Figure 4 It is a cross groove view of the utility model;

[0018] The components are as follows: 1. Connecting rod; 2. Gasket; 3. Threaded rod; 4. Threaded head; 5. Oil injection channel; 501. Oil injection hole; 6. Cross groove; 7. Rubber plug cap; 701. Rounded convex edge; 8. Lubrication mechanism; 9. Lubrication box; 10. Lubrication pipe; 1001. Through groove; 11. Lubricating sponge; 12. Movable rod; 1201. Movable groove; 13. Spring; 14. Extrusion plate; 15. Handle. Detailed Implementation

[0019] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this utility model. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0020] Example

[0021] like Figure 1 , Figure 2 , Figure 3 As shown, this utility model provides a combined screw, including a connecting rod 1. A rubber stopper 7 is disposed above the connecting rod 1. A lubrication mechanism 8 for lubricating the screw is installed on the top of the connecting rod 1. The lubrication mechanism 8 includes a lubrication box 9 fixedly disposed on the outer surface of the top of the rubber stopper 7. The two sides of the bottom inner wall of the lubrication box 9 are symmetrically set as inclined surfaces. Lubricating sponges 11 are symmetrically fixed and adhered to the two inclined surfaces at the bottom of the lubrication box 9. A compression plate 14 is suspended and parallel above the lubrication sponges 11. A movable rod 12 is vertically fixed on the upper surface of the compression plate 14. The movable rod 12 is movably inserted into the lubrication box 9, and the upper end of the movable rod 12 passes through the shell wall of the lubrication box 9 outward. The lubrication box 9 has an extension, with a handle 15 fixedly provided at its top end. A movable groove 1201 is provided on the top shell wall of the lubrication box 9 corresponding to the movable rod 12. The movable rod 12 is movably disposed in the movable groove 1201. A spring 13 is sleeved on the outside of the movable rod 12. The spring 13 is fixedly connected between the surface of the extrusion plate 14 and the top inner wall of the lubrication box 9. A through groove 1001 is connected between the bottom of the two inclined surfaces of the bottom inner wall of the lubrication box 9. The through groove 1001 penetrates the bottom of the lubrication box 9 and extends downward into the rubber stopper cap 7. A lubrication tube 10 is fixedly connected on the bottom outer wall of the rubber stopper cap 7 corresponding to the through groove 1001. The through groove 1001 communicates with the lubrication tube 10.

[0022] like Figure 1 , Figure 2 , Figure 3 ,Figure 4 As shown, a screw head 4 is fixedly provided on the top of the connecting rod 1. The rubber plug 7 is engaged in the groove opened on the upper surface of the screw head 4. A circular arc protrusion 701 is provided on the outer ring surface of the rubber plug 7. The circular arc protrusion 701 is engaged in the corresponding slot on the wall of the groove. The bottom of the groove is connected to a cross groove 6 opened in the screw head 4.

[0023] like Figure 1 , Figure 2 , Figure 3 As shown, the lower end of the connecting rod 1 is fixedly connected to a threaded rod 3, and a washer 2 is slidably sleeved on the outside. The threaded rod 3 has a vertically opened oil injection channel 5 inside. The upper end of the oil injection channel 5 is connected to the cross groove 6. The lower end of the lubrication pipe 10 is inserted into the oil injection channel 5. Multiple oil injection holes 501 are opened on the outer surface of the connecting rod 1. Each oil injection hole 501 is evenly connected to the oil injection channel 5, and the oil injection holes 501 are all obliquely downward inside the threaded rod.

[0024] When using this device, the rubber plug cap 7 improves the sealing performance and prevents the cross groove 6 from being exposed to the external environment and corroded. The arc-shaped protrusion 701 on the rubber plug cap 7 engages with the screw head 4, improving the stability of the connection between the rubber plug cap 7 and the screw head 4. When the screw is rusted and inconvenient to remove, press down on the handles 15 on both sides of the lubrication box 9. The handles 15 drive the movable rod 12 downward, which in turn drives the extrusion plate 14 downward and stretches the spring 13. The spring 13 deforms under force, thus gaining elastic potential energy to return to its original shape. The extrusion plate 14 moves downward and contacts the lubricating sponge. Pressing down on the movable rod 12 further causes the extrusion plate 14 to begin squeezing the lubricating sponge 11, causing lubricating oil to flow out of the lubricated sponge 11. Due to the inclined setting of the lubricating sponge 11, the lubricating oil flows downward into the through groove 1001 and then into the lubrication pipe 10, entering the lubrication system through the lubrication pipe 10. Inside the oil injection channel 5, since the oil injection holes 501 are all angled downwards inside the screw, the lubricating oil is distributed to each oil injection hole 501 to lubricate the screw. The process of repeatedly squeezing the lubricating sponge 11 is repeated. When there is enough lubricating oil on the screw, the handle 15 is released. Under the action of the spring 13, its rebound drives the extrusion plate 14 to move upwards, no longer squeezing the lubricating sponge 11. When there is no lubricating oil in the lubricating sponge 11, the rubber stopper cap 7 can be removed, and lubricating oil can be injected into the lubricating sponge 11 in the lubrication box 9 through the lubrication tube 10. This device, through the set movable rod 12, spring 13, extrusion plate 14, lubricating sponge 11, and lubrication tube 10, allows the movable rod 12 to drive the extrusion plate 14 to compress the lubricating sponge 11. This allows the lubricating oil filled in the lubricating sponge 11 to flow out through the lubrication tube 10 and then into the oil injection channel 5, overflowing through the oil injection hole 501 to lubricate the screw surface, which is very convenient.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A combined screw, comprising a connecting rod (1), wherein a rubber cap (7) is disposed above the connecting rod (1), characterized in that: The top of the connecting rod (1) is equipped with a lubrication mechanism (8) for lubricating the screw, the lubrication mechanism (8) including... A lubrication box (9) is fixed on the outer surface of the top of the rubber plug cap (7), and the two sides of the inner wall of the bottom end of the lubrication box (9) are symmetrically set as inclined surfaces; Lubricating sponges (11) are symmetrically fixed and bonded to the inclined surfaces on both sides of the bottom end of the lubrication box (9); An extrusion plate (14) is suspended parallel above the lubricating sponge (11); A movable rod (12) is vertically fixed to the upper surface of the extrusion plate (14), and the movable rod (12) is movably inserted into the lubrication box (9); When the movable rod (12) is pushed down, the movable rod (12) causes the extrusion plate (14) to move down and extrude the lubricating sponge (11), and the lubricating oil filled in the lubricating sponge (11) is squeezed out.

2. A combined screw according to claim 1, characterized in that: The upper end of the movable rod (12) extends outward through the shell wall of the lubrication box (9), and a handle (15) is fixedly provided on its top end. A movable groove (1201) is provided on the top shell wall of the lubrication box (9) corresponding to the movable rod (12).

3. A combined screw according to claim 1, characterized in that: A spring (13) is fitted around the outside of the movable rod (12), and the spring (13) is fixedly connected between the surface of the extrusion plate (14) and the inner wall of the top of the lubrication box (9).

4. A combined screw according to claim 1, characterized in that: A through groove (1001) is connected between the bottom of the two inclined surfaces of the bottom inner wall of the lubrication box (9). The through groove (1001) penetrates the bottom of the lubrication box (9) and extends downward into the rubber stopper cap (7). A lubrication pipe (10) is fixedly connected to the bottom outer wall of the rubber stopper cap (7) at the position corresponding to the through groove (1001).

5. A combined screw according to claim 1, characterized in that: The top of the connecting rod (1) is fixedly provided with a screw head (4), the rubber plug cap (7) is snapped into the groove opened on the upper surface of the screw head (4), and a ring of arc protrusion (701) is provided on the outer ring surface of the rubber plug cap (7), and the bottom of the groove is connected to a cross groove (6) opened in the screw head (4).

6. A combined screw according to claim 1, characterized in that: The lower end of the connecting rod (1) is fixedly connected to a threaded rod (3), and a gasket (2) is slidably sleeved on the outside. An oil injection channel (5) is vertically opened inside the threaded rod (3), and multiple oil injection holes (501) are opened on the outer surface of the connecting rod (1).

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