Auxiliary device for screw fixation

Abstract

This application relates to the technical field of assembly tools, and discloses an auxiliary device for screw fixation, which includes a sleeve rod. The sleeve rod has a hollow inner cavity filled with a protective agent that can form a protective layer on the screw surface. The front end of the sleeve rod is used to install the screw head and is provided with a flow channel communicating with the hollow inner cavity. The rear end can be connected to the rotating end of the screw screwing tool and can make the sleeve rod rotate synchronously with the rotating end. When the sleeve rod rotates, the protective agent flows to the screw side through the flow channel. In this application, when the screw screwing tool drives the sleeve rod to rotate synchronously to screw the screw into the workpiece to be fixed, the protective agent flows from the hollow inner cavity to the screw side through the flow channel and is distributed on the surface of the screw head to form a new protective coating, thereby effectively protecting the screw. In this way, the anti-corrosion property and safety during use of the screw are improved.

Description

Technical Field

[0001] The present application relates to the technical field of assembly tools, for example, to an auxiliary device for screw fixing. Background Art

[0002] The outer shells of air conditioner outdoor units on the market are now made of metal and are powder-coated and painted. All exterior parts are fixed together with screws. The screws are fixed with a torque gun and a sleeve device. When fixing the screws, the surface of the screw head is squeezed by the torque gun, and the anti-corrosion layer is easily damaged. Since air conditioner outdoor units are installed outdoors and are often exposed to sunlight, rain, dust, etc., especially when used in high-salt areas such as offshore, it is easy for the screws to rust, affecting the fixing effect of the screws. Once the fixing force of the screws is not properly controlled, it is easy to scratch the powder coating and paint coating of the metal parts, causing the powder and paint film to rupture and expose the sheet metal. Since the sheet metal loses its anti-corrosion protective layer, it will eventually rust under the erosion of atmospheric rainwater, making it difficult to disassemble the screws, resulting in reduced strength and screw fracture and failure, which seriously affects the safety, refinement of the appearance and user experience of the air conditioner outdoor unit. Summary of the invention

[0003] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0004] An embodiment of the present disclosure provides an auxiliary device for screw fixing, so as to reduce the problem that the protective layer on the surface of the screw head is easily damaged during the screw fixing process.

[0005] In some embodiments, the auxiliary device for screw fixation includes a set of rods, the set of rods having a hollow inner cavity filled with a protective agent that can form a protective layer on the surface of the screw, the front end of the set of rods is used to mount the screw head and the front end is provided with a flow channel connected to the hollow inner cavity, the rear end of the set of rods can be connected to the rotating end of the screw screwing tool and can make the set of rods rotate synchronously with the rotating end; wherein, when the set of rods rotates, the protective agent flows to the screw side through the flow channel.

[0006] In some embodiments, a mounting groove detachably connected to the screw head is formed at the front end of the sleeve rod, and a flow channel is formed at the bottom wall of the mounting groove to at least connect the inner cavity and the mounting groove.

[0007] In some embodiments, the flow channel includes: a microgroove flow channel, which is arranged on the bottom wall of the mounting groove; and / or a drainage channel, which is extended and formed along the side wall of the mounting groove, and the drainage channel is constructed as a semicircular opening structure.

[0008] In some embodiments, the auxiliary device for screw fixation further includes: an adsorption layer disposed in the inner cavity, covering the flow channel, for absorbing the protective agent, and being squeezed when the sleeve rod rotates to transfer the protective agent to the flow channel.

[0009] In some embodiments, the adsorption layer is a porous material layer.

[0010] In some embodiments, the auxiliary device for screw fixation further includes: an agitating member disposed in the inner cavity for agitating the protective agent.

[0011] In some embodiments, the agitating member is a spherical structure, and a plurality of grooves are spaced on the spherical surface.

[0012] In some embodiments, the auxiliary device for screw fixation further includes: an injection hole formed by penetrating from the outer wall of the sleeve rod to the inner cavity for replenishing the protective agent into the inner cavity; a seal member detachably disposed on the injection hole for blocking the injection hole.

[0013] In some embodiments, the rear end of the sleeve rod is configured as a polygonal rod-shaped structure, and the rotating end of the screw driving tool is matched with the rod-shaped structure.

[0014] In some embodiments, the sleeve rod includes a front section and a rear section, and the front section and the rear section are threadedly connected.

[0015] The auxiliary device for screw fixation provided by the embodiments of the present disclosure can achieve the following technical effects:

[0016] When the screw driving tool drives the sleeve rod to rotate synchronously to screw the screw into the workpiece to be fixed, the protective agent flows from the hollow inner cavity to the screw side through the flow channel and is distributed on the surface of the screw head to form a new protective coating, thereby effectively protecting the screw. In this way, the anti-corrosion property and the safety during use of the screw are improved.

[0017] The above general description and the following description are only exemplary and explanatory, and are not used to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations and the drawings do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation, and in which:

[0019] Figure 1 is a schematic structural diagram of an auxiliary device for screw fixation provided by an embodiment of the present disclosure;

[0020] Figure 2 is an exploded schematic diagram of an auxiliary device for screw fixation provided by an embodiment of the present disclosure;

[0021] Figure 3 is a schematic cross-sectional view of an auxiliary device for screw fixation provided by an embodiment of the present disclosure;

[0022] Figure 4 is a schematic enlarged partial view of an auxiliary device for screw fixation provided by an embodiment of the present disclosure;

[0023] Figure 5 is a schematic structural view of an adsorption layer provided by an embodiment of the present disclosure.

[0024] Reference numerals:

[0025] 100, sleeve rod; 110, front end; 111, mounting groove;

[0026] 120, rear end; 130, front section; 140, rear section;

[0027] 200, flow channel; 210, micro-channel flow; 220, drainage channel;

[0028] 300, adsorption layer; 400, stirring member;

[0029] 500, injection hole; 600, seal. Detailed implementation manners

[0030] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for reference and illustration only and are not intended to limit the embodiments of the present disclosure. In the following technical description, for the sake of explanation, a sufficient understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be shown in a simplified manner to simplify the drawings.

[0031] The terms "first", "second", etc. in the specification, claims and above-mentioned drawings of the embodiments of the present disclosure are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so as to implement the embodiments of the present disclosure described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0032] In the embodiments of the present disclosure, the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "middle", "outer", "front", and "rear" is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and their embodiments, and are not used to limit that the indicated devices, elements, or components must have a specific orientation, or be constructed and operated in a specific orientation. Moreover, in addition to being able to represent an orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0033] In addition, the terms "arrangement", "connection", and "fixation" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0034] Unless otherwise specified, the term "plurality" means two or more.

[0035] In the embodiments of the present disclosure, the character " / " indicates that the objects before and after are in an "or" relationship. For example, A / B means: A or B.

[0036] The term "and / or" is a description of the association relationship of an object, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B these three relationships.

[0037] It should be noted that, without conflict, the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other.

[0038] Figure 1 is a schematic structural diagram of an auxiliary device for screw fixation provided by the embodiments of the present disclosure; Figure 2 is an exploded schematic diagram of an auxiliary device for screw fixation provided by the embodiments of the present disclosure; Figure 3 is a schematic cross-sectional view of an auxiliary device for screw fixation provided by the embodiments of the present disclosure. In combination with Figures 1 to 3As shown in the figure, an embodiment of the present disclosure provides an auxiliary device for screw fixation, which includes a sleeve rod 100. The sleeve rod 100 has a hollow inner cavity filled with a protective agent. The front end 110 of the sleeve rod 100 is used to install a screw head and is provided with a flow channel 200 communicating with the hollow inner cavity. The rear end 120 of the sleeve rod 100 can be connected to the rotating end of a screw screwing tool and can make the sleeve rod 100 rotate synchronously with the rotating end. Among them, when the sleeve rod 100 rotates, the protective agent can flow to the screw side through the flow channel 200.

[0039] In practical applications, the outer shells of air conditioner outdoor units are all made of metal and are powder-coated or painted, and are fixed together with screws. When fixing the screws, the surface of the screw head is squeezed by the torque wrench, and the anti-corrosion layer will be damaged. This will cause the screws to rust under the action of moisture, rain, etc., affecting the appearance refinement of the air conditioner outdoor unit. In addition, when the screws are severely corroded, they are prone to failure, resulting in the problem of their fracture and failure, which further affects the safety of the air conditioner outdoor unit. Due to the effect of rust, the screws are not easy to disassemble and replace, seriously affecting the repair efficiency. Correspondingly, the present application provides an auxiliary device for screw fixation, which is used to improve the reliable connection between the screw and the component to be fixed, and to improve the problems of rusting caused by the extrusion and friction damage of the screw protective layer by the rotational force, screw fracture, and easy slipping of the screw caused by rust, ensuring the reliability and service durability of the air conditioner outdoor unit.

[0040] Optionally, after installing the screw head at the front end 110 of the sleeve rod 100 and connecting the rear end 120 of the sleeve rod 100 to the rotating end of the screw screwing tool, the screw can be aligned with the place to be fixed, and the screw is fixed by using the screw screwing tool. Since the front end of the sleeve rod 100 is provided with a flow channel 200 communicating with the hollow inner cavity, during the process of the sleeve rod 100 rotating synchronously with the screw screwing tool to fix the screw, the protective agent filled in the hollow inner cavity can flow to the side where the screw is located through the flow channel 200 and can be distributed on the surface of the screw. In this way, during the process of fixing the screw, a protective coating can be formed on the surface of the screw at the same time. Even if the original protective layer on the screw surface is damaged, the protective coating formed after the protective agent flows to the surface of the screw through the flow channel 200 can provide further protection for the screw to prevent the screw from being corroded or rusted after the fixation is completed, which can improve the life, reliability, and durability of the screw during its use.

[0041] Optionally, the protective agent can be anti-corrosion oil, preferably anti-corrosion oil with a medium viscosity index between 100 and 170. Optionally, the protective agent can be anti-corrosion paint. Optionally, the protective agent can be wear-resistant medium. Optionally, the protective agent can be antioxidant coating. Optionally, the protective agent can be anti-rust medium. Optionally, the protective agent can be lubricating oil.

[0042] Optionally, the sleeve rod 100 is made of carbon steel material and electroplated to improve the wear resistance and aesthetics of the sleeve rod 100.

[0043] Optionally, in order to improve the stable connection between the screw and the front end 110 of the sleeve rod 100, the front end of the sleeve rod 100 is magnetized so that the front end 110 of the sleeve rod 100 has a certain magnetic attraction ability for the screw, preventing the screw from falling off and avoiding affecting the assembly progress of the screw.

[0044] When the screw driving tool drives the sleeve rod to rotate synchronously to screw the screw into the workpiece to be fixed by using the auxiliary device for screw fixing provided by the embodiment of the present disclosure, the protective agent flows from the hollow inner cavity to the screw side through the flow channel and is distributed on the surface of the screw to form a new protective coating, thereby effectively protecting the screw. In this way, the anti-corrosion property and safety during use of the screw are improved.

[0045] Optionally, an installation groove 111 detachably connected to the screw head is formed in the front end 110 of the sleeve rod 100, and the flow channel 200 is formed in the bottom wall of the installation groove 111 to at least communicate the inner cavity and the installation groove 111.

[0046] Optionally, in order to further improve the protection effect on the screw head and the stable cooperation between the screw and the front end 110 of the sleeve rod 100, an installation groove 111 is provided at the front end 110 of the sleeve rod 100, and the screw head can be placed in the installation groove 111 so that the installation groove 111 wraps the screw head. In this way, when the sleeve rod 100 rotates synchronously with the screw screwing device, the screw head receives a uniform torque force transmission from the installation groove 111, which can effectively prevent the protective layer on the surface of the screw from being damaged due to uneven extrusion force.

[0047] Optionally, the flow channel 200 is formed in the bottom wall of the installation groove 111 for communicating the inner cavity and the installation groove 111. In this way, the protective agent filled in the hollow inner cavity can flow along the flow channel 200 into the installation groove 111 and be distributed on the surface of the screw head, and can also extend to the surfaces of other parts of the screw, thereby forming a protective coating and further playing a protective role for the screw.

[0048] Optionally, the end of the opening of the installation groove 111 facing the screw head can be rounded to prevent scratching the screw.

[0049] Figure 4 is a partial enlarged schematic view of an auxiliary device for screw fixing provided by the embodiment of the present disclosure. In combination with Figure 3 、 Figure 4As shown, in some embodiments, the flow channel 200 includes a micro-groove flow channel 210, or includes a drainage channel 220, or includes both the micro-groove flow channel 210 and the drainage channel 220. The micro-groove flow channel 210 is disposed on the bottom wall of the mounting groove 111. The drainage channel 220 is formed by extending along the side wall of the mounting groove 111, and the drainage channel 220 is configured as a semi-circular open structure.

[0050] Optionally, the cross-sectional shape of the micro-groove flow channel 210 can be triangular, can be circular, or can also be polygonal. Preferably, the cross-sectional shape of the micro-groove flow channel 210 is circular, so as to avoid the formation of flow dead zones of the protective agent at the bending points of the micro-groove flow channel 210, and to reduce the flow resistance of the protective agent during the flowing process, ensuring the smooth flow of the protective agent.

[0051] Optionally, the drainage channel 220 is formed by extending along the side wall of the mounting groove 111, and the drainage channel 220 is configured as a semi-circular open structure. In this way, when the screw head is placed in the mounting groove 111, the mounting groove 111 wraps the screw head. At this time, the drainage channel 220 is formed on the side wall of the mounting groove 111. When the sleeve rod 100 rotates synchronously with the screw driving device, the protective agent flows along the drainage channel 220 and can directly contact the screw head of the screw, so as to form a protective layer on each side of the screw head, providing effective protection for the screw. In addition, the protective agent can also flow along the surface of the screw head to the surface of the rod portion of the screw to form a protective layer, thereby providing protection for the screw and improving the anti-corrosion property and safety during the use process of the screw.

[0052] Combined Figure 2 、 Figure 3 As shown, in some embodiments, the auxiliary device for screw fixation further includes an adsorption layer 300. The adsorption layer 300 is disposed in the hollow inner cavity of the sleeve rod 100, covering above the flow channel 200, for absorbing the protective agent and being able to transfer the protective agent to the flow channel 200 under pressure when the sleeve rod 100 rotates.

[0053] During the use process, when the auxiliary device for screw fixation is stationary, the adsorption layer 300 can absorb the protective agent in the hollow inner cavity of the sleeve rod 100 and can keep the protective agent stored inside the hollow inner cavity of the sleeve rod 100. When the auxiliary device for screw fixation is working, that is, when the sleeve rod 100 rotates synchronously with the screw driving device, the adsorption layer 300 is subjected to force and can transfer the protective agent to the flow channel 200, so as to ensure that the protective agent can flow along the flow channel 200 to one side of the screw head, facilitating the formation of a protective layer on the surface of the screw to improve the anti-corrosion property of the screw and its safety during the use process.

[0054] Figure 5It is a schematic structural diagram of an adsorption layer provided by an embodiment of the present disclosure. In combination with Figure 5 As shown, optionally, the adsorption layer 300 is a porous material layer.

[0055] Optionally, the adsorption layer 300 is made of a porous material foamed plastic polymer, has good water absorption, can adsorb liquid media, and plays a role in the penetration and transfer of the media.

[0056] Optionally, the thickness range of the adsorption layer 300 is 5 mm to 8 mm. In this way, the permeability of the protective agent can be ensured.

[0057] Optionally, the shape of the adsorption layer is the same as the shape of the hollow inner cavity of the sleeve rod 100. Optionally, the cross-sectional shape of the hollow inner cavity of the sleeve rod 100 is hexagonal. Then, the cross-sectional shape of the adsorption layer 300 is also set to be hexagonal, and the diameter of the inscribed circle of the hexagon of the cross-section of the adsorption layer 300 is greater than or equal to the diameter of the inscribed circle of the hexagon of the cross-section of the hollow inner cavity of the sleeve rod 100. Preferably, the difference between the diameter of the inscribed circle of the hexagon of the cross-section of the adsorption layer 300 and the diameter of the inscribed circle of the hexagon of the cross-section of the hollow inner cavity of the sleeve rod 100 is 2 mm. In this way, when the adsorption layer 300 is installed above the flow channel 200, the movement of the adsorption layer 300 at the designed position can be restricted by relying on the elasticity of the adsorption layer 300 to prevent the problem of dislocation.

[0058] In some embodiments, the auxiliary device for screw fixation further includes a stirring member 400. The stirring member 400 is disposed in the hollow inner cavity of the sleeve rod 100 and is used for stirring the protective agent.

[0059] When the auxiliary device for screw fixation is in operation, that is, when the sleeve rod 100 rotates synchronously with the screw screwing-in device, the stirring member 400 moves synchronously in the hollow inner cavity of the sleeve rod 100. During the movement of the stirring member 400, the adsorption layer 300 can be impacted. When the adsorption layer 300 is impacted by the stirring member 400, the adsorption layer 300 is affected by the impact force of the stirring member 400, and the transferability of the adsorption layer 300 to the protective agent is improved.

[0060] In addition, when the auxiliary device for screw fixation is in operation, that is, when the sleeve rod 100 rotates synchronously with the screw screwing-in device, the stirring member 400 moves in the hollow inner cavity of the sleeve rod 100, which can play a role in stirring the protective agent. During the movement of the stirring member 400, the protective agent is stirred, and the fluidity of the protective agent is improved. When the stirring member 400 moves flexibly in the hollow inner cavity of the sleeve rod 100, the protective agent is transferred along the adsorption layer 300 to the flow channel 200 and finally transferred to the surface of the screw head to cover the outer surface of the screw, thereby effectively repairing or protecting the screw head.

[0061] Optionally, the stirring member 400 is a spherical structure. To increase the surface roughness of the stirring member 400, a plurality of grooves are provided at intervals on the spherical surface (the grooves are not shown in the figure). In this way, when the auxiliary device for screw fixing is in operation, that is, when the sleeve rod 100 rotates synchronously with the screw screwing device, the contact area between the stirring member 400 and the protective agent is increased, and the stirring force of the stirring member 400 is enhanced, thereby improving the effect of the stirring member 400 on the adsorption layer 300 to improve the transferability of the protective agent and ensure effective repair or protection of the screw head.

[0062] In some embodiments, the auxiliary device for screw fixing further includes an injection hole 500 and a seal 600. The injection hole 500 is formed by penetrating from the outer wall of the sleeve rod 100 to the hollow inner cavity of the sleeve rod 100 for replenishing the protective agent into the hollow inner cavity of the sleeve rod 100. The seal 600 is detachably disposed on the injection hole 500 to block the injection hole 500.

[0063] Optionally, through the injection hole 500, the protective agent can be replenished into the hollow inner cavity of the sleeve rod 100 to ensure that there is enough protective agent in the hollow inner cavity of the sleeve rod 100. Optionally, the seal 600 is detachably disposed on the injection hole 500.

[0064] When it is necessary to replenish the protective agent into the hollow inner cavity of the sleeve rod 100, the seal 600 is removed, and the protective agent is injected into the hollow inner cavity of the sleeve rod 100 by using a syringe or other injection tool. After the injection of the protective agent is completed, the seal 600 is reassembled to the injection hole 500 to block the injection hole 500 and ensure the sealing of the hollow inner cavity of the sleeve rod 100 to prevent leakage of the protective agent.

[0065] Optionally, the injection hole 500 is a threaded hole, and the seal 600 is a screw that is threadedly engaged with the threaded hole to facilitate the detachability and sealing performance of the seal 600.

[0066] Optionally, the rear end 120 of the sleeve rod 100 is configured as a polygonal rod-shaped structure, and the rotating end of the screw screwing tool is engaged with the polygonal rod-shaped structure.

[0067] Optionally, the screw screwing tool can be a torque gun. In this case, the rear end 120 of the sleeve rod 100 is configured as a polygonal rod-shaped structure and is assembled and fixed with the telescopic clamping bushing of the torque gun to achieve the transmission of the torque force of the torque gun.

[0068] Optionally, the design parameters of the rod-shaped structure of the polygon, such as the diameter of the circumscribed circle of the polygon rod-shaped structure, the length, etc., are designed with reference to national standards to ensure the universality of the auxiliary device for screw fixation, so that it can match a pneumatic torque wrench or an electric torque wrench.

[0069] Optionally, the sleeve rod 100 includes a front section 130 and a rear section 140, and the front section 130 and the rear section 140 are threadedly connected. To facilitate the assembly of the components in the hollow inner cavity of the sleeve rod 100, the sleeve rod 100 includes a front section 130 and a rear section 140 that are threadedly connected.

[0070] During actual use, after the adsorption layer 300 and the stirring member 400 are installed in the hollow inner cavity of the sleeve rod 100, the front section 130 and the rear section 140 of the sleeve rod 100 are assembled together, a protective agent is injected into the hollow inner cavity of the sleeve rod 100 through the injection hole 500, and then the seal 600 is installed on the injection hole, and the assembly of the auxiliary device for screw fixation can be completed. After the assembly is completed, it can be directly used. By providing a rod-shaped structure at the rear end 120 of the sleeve rod 100, which is configured as a polygon, the auxiliary device for screw fixation can be directly connected and fixed to screw insertion tools such as pneumatic torque wrenches or electric torque wrenches on the market.

[0071] The installation groove 111 provided at the front end 110 of the sleeve rod 100 can be used to install and accommodate the screw head to ensure more uniform torque force transmission to the screw head. When the screw insertion tool is working, the sleeve rod 100 can rotate synchronously with the rotating end of the screw insertion tool, and the rotational force of the screw insertion tool can be transmitted to the screw to achieve the fixation or disassembly of the screw.

[0072] During the process of fixing or disassembling the screw, the protective agent will penetrate along the adsorption layer 300 into the flow channel 200 and finally be transmitted to the surface of the screw head, so that the protective agent can form a protective layer on the surface of the screw head, achieving the protection or repair effect on the screw, improving the anti-corrosion effect of the screw, and avoiding the problem of screw rusting caused by extrusion damage during screw fixation in the past. During this process, the stirring member 400 will move in the hollow inner cavity of the sleeve rod 100 to achieve the effect of stirring the protective agent to improve the fluidity of the protective agent.

[0073] During the use of the auxiliary device for screw fixation, if the protective agent is completely consumed, the seal 600 can be removed to open the injection hole 500, and an injection tool such as a syringe can be used to inject the protective agent. After the injection is completed, the seal 600 can be reassembled onto the injection hole 500.

[0074] The above description and the drawings sufficiently illustrate embodiments of the present disclosure such that those skilled in the art can practice them. Other embodiments may include structural and other changes. Embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An auxiliary device for screw fixation, characterized in that, It includes a sleeve rod which has a hollow inner cavity filled with a protective agent. The front end of the sleeve rod is used for installing a screw head and is provided with a flow channel communicating with the hollow inner cavity. The rear end of the sleeve rod can be connected to the rotating end of a screw screwing tool and can make the sleeve rod rotate synchronously with the rotating end; Wherein, when the sleeve rod rotates, the protective agent flows towards the screw side through the flow channel.

2. The auxiliary device according to claim 1, characterized in that, The front end of the sleeve rod is provided with an installation groove detachably connected to the screw head, and the flow channel is arranged on the bottom wall of the installation groove to at least communicate the inner cavity and the installation groove.

3. The auxiliary device according to claim 2, characterized in that, The flow channel includes: A micro-groove flow channel arranged on the bottom wall of the installation groove; and / or, A drainage channel formed by extending along the side wall of the installation groove, and the drainage channel is configured as a semi-circular opening structure.

4. The auxiliary device according to claim 1, characterized in that, It further includes: An adsorption layer arranged in the inner cavity, covering the flow channel, for absorbing the protective agent and being able to be pressured when the sleeve rod rotates to transfer the protective agent to the flow channel.

5. The auxiliary device according to claim 4, characterized in that, The adsorption layer is a porous material layer.

6. The auxiliary device according to any one of claims 1 to 5, characterized in that, It further includes: A stirring member arranged in the inner cavity for stirring the protective agent.

7. The auxiliary device according to claim 6, characterized in that, The stirring member is a spherical structure, and a plurality of grooves are spaced on the spherical surface.

8. The auxiliary device according to any one of claims 1 to 5, characterized in that, It further includes: An injection hole formed by penetrating from the outer wall of the sleeve rod to the inner cavity for replenishing the protective agent into the inner cavity; A seal member detachably arranged on the injection hole for plugging the injection hole.

9. The auxiliary device according to any one of claims 1 to 5, characterized in that, The rear end of the sleeve rod is constructed as a polygonal rod-shaped structure, and the rotating end of the screw screwing tool is matched with the rod-shaped structure.

10. The auxiliary device according to any one of claims 1 to 5, characterized in that, The sleeve rod includes a front section and a rear section, and the front section and the rear section are threadedly connected.

Images