WO2022222681A1

WO2022222681A1 - Screw fixing assistance apparatus

Info

Publication number: WO2022222681A1
Application number: PCT/CN2022/082742
Authority: WO
Inventors: 魏长见; 徐伟
Original assignee: 青岛海尔空调电子有限公司; 青岛海尔空调器有限总公司; 海尔智家股份有限公司
Priority date: 2021-04-20
Filing date: 2022-03-24
Publication date: 2022-10-27

Abstract

A screw fixing assistance apparatus, comprising a sleeve rod (100). The sleeve rod (100) has a hollow inner cavity, and is filled with a protective agent that can form a protective layer on the surface of a screw. A front end (110) of the sleeve rod (100) is used for mounting a screw head, and the front end (110) is provided with a flow channel (200) communicated with the hollow inner cavity. A rear end (120) can be connected to a rotating end of a screwing tool, and can cause the sleeve rod (10) to synchronously rotate with the rotating end. When the sleeve rod (100) rotates, the protective agent flows through the flow channel (200) to a screw side. When the screwing tool drives the sleeve rod to synchronously rotate to screw a screw into a member 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, and improving the corrosion resistance and the usage safety of the screw.

Description

Auxiliary device for screw fixation

This application is based on the Chinese patent application with the application number of 202110424245.7 and the filing date of April 20, 2021, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is incorporated herein by reference.

This application is based on the Chinese patent application with the application number of 202120815363.6 and the filing date of April 20, 2021, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is incorporated herein by reference.

technical field

The present application relates to the technical field of assembly tools, for example, to an auxiliary device for screw fixation.

Background technique

At present, the outer casing of the air conditioner on the market is made of metal material for powder spraying and painting, and the external 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 the outdoor units of the air conditioner are installed outdoors and are often exposed to sunlight, rain, dust, etc., especially in areas with high salt damage such as offshore, it is easy to cause the screws to rust and affect the fixing effect of the screws. Once the fixing force of the screws is not controlled In place, it is easy to scratch the powder coating and spray paint coating of the metal parts, resulting in the rupture of the powder and paint film and exposing the sheet metal. Because the sheet metal loses the anti-corrosion protection layer, under the erosion of atmospheric rain, the sheet metal parts will eventually appear. Rusting makes the screws difficult to disassemble, the strength decreases, and the screws break and fail, which seriously affects the safety of the air conditioner outdoor unit, the refined appearance, and the user experience.

SUMMARY OF THE INVENTION

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

Embodiments of the present disclosure provide an auxiliary device for screw fixation, 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.

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

In some embodiments, the front end of the sleeve rod is provided with an installation groove detachably connected with the screw head, and the flow channel is formed on the bottom wall of the installation groove to communicate at least the inner cavity and the installation groove.

In some embodiments, the flow channel includes: a micro-groove flow channel disposed on the bottom wall of the installation groove; and/or a drainage channel extending along the sidewall of the installation groove, and the drainage channel is configured as a semicircular opening structure.

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 can be squeezed when the sleeve rod rotates, so that the flow channel Channel transmission protective agent.

In some embodiments, the adsorption layer is a layer of porous material.

In some embodiments, the auxiliary device for screw fixation further comprises: a stirring member, disposed in the inner cavity, for stirring the protective agent.

In some embodiments, the stirring member is a spherical structure, and a plurality of grooves are arranged on the spherical surface at intervals.

In some embodiments, the auxiliary device for screw fixation further comprises: an injection hole, formed from the outer wall of the sleeve rod to the inner cavity, and used for supplementing the protective agent to the inner cavity; a sealing member, detachably arranged on the inner cavity The injection hole is used to block the injection hole.

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.

In some embodiments, the sleeve rod includes an anterior segment and a posterior segment, and the anterior segment and the posterior segment are threadedly connected.

The auxiliary device for screw fixation provided by the embodiment of the present disclosure can achieve the following technical effects:

When the screw driving tool drives the sleeve rod to rotate synchronously so that the screw is screwed into the to-be-fixed part, the protective agent flows from the hollow 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. Effective protection, in this way, improves the corrosion resistance of the screw and the safety during use.

The foregoing general description and the following description are exemplary and explanatory only and are not intended to limit the application.

Description of drawings

One or more embodiments are exemplified by the accompanying drawings, which are not intended to limit the embodiments, and elements with the same reference numerals in the drawings are shown as similar elements, The drawings do not constitute a limitation of scale, and in which:

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

2 is an exploded schematic diagram of an auxiliary device for screw fixing provided by an embodiment of the present disclosure;

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

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

FIG. 5 is a schematic structural diagram of an adsorption layer provided by an embodiment of the present disclosure.

Reference number:

100, sleeve rod; 110, front end; 111, installation groove;

120, rear end; 130, front section; 140, rear section;

200, flow channel; 210, micro groove flow channel; 220, drainage channel;

300, adsorption layer; 400, stirring member;

500, injection hole; 600, seal.

Detailed ways

In order to understand the features and technical contents 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, which are for reference only and are not intended to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, numerous details are provided to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawings.

The terms "first", "second" and the like in the description and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data so used may be interchanged under appropriate circumstances for the purposes of implementing the embodiments of the disclosure described herein. Furthermore, the terms "comprising" and "having", and any variations thereof, are intended to cover non-exclusive inclusion.

In the embodiments of the present disclosure, the orientations or positional relationships indicated by the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", etc. are based on the orientations shown in the drawings or Positional relationship. These terms are primarily used to better describe the embodiments of the present disclosure and embodiments thereof, and are not intended to limit the fact that the indicated device, element, or component must have a particular orientation, or be constructed and operated in a particular orientation. In addition, some of the above-mentioned terms may be used to express other meanings besides orientation or positional relationship. For example, the term "on" may also be used to express a certain attachment 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 situations.

In addition, the terms "arranged", "connected" and "fixed" should be construed broadly. For example, "connection" may be a fixed connection, a detachable connection, or a unitary construction; it may be a mechanical connection, or an electrical connection; it may be a direct connection, or an indirect connection through an intermediary, or two devices, elements or Internal connectivity between 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 situations.

Unless stated otherwise, the term "plurality" means two or more.

In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an "or" relationship. For example, A/B means: A or B.

The term "and/or" is an associative relationship describing objects, indicating that three relationships can exist. For example, A and/or B, means: A or B, or, A and B three relationships.

It should be noted that the embodiments in the embodiments of the present disclosure and the features in the embodiments may be combined with each other in the case of no conflict.

1 is a schematic structural diagram of an auxiliary device for screw fixation provided by an embodiment of the present disclosure; FIG. 2 is an exploded schematic diagram of an auxiliary device for screw fixation provided by an embodiment of the present disclosure; FIG. 3 is provided by an embodiment of the present disclosure. A schematic cross-sectional view of an auxiliary device for screw fixation. With reference to FIGS. 1 to 3 , the embodiment of the present disclosure provides an auxiliary device for screw fixation, which includes a set of rods 100 , the set of rods 100 has a hollow inner cavity, and the hollow inner cavity is filled with a protective agent , the front end 110 of the sleeve rod 100 is used to install the screw head and the front end is provided with a flow channel 200 that communicates with the hollow cavity, the rear end 120 of the sleeve rod 100 can be connected with the rotating end of the screw screwing tool and can make the sleeve rod 100 follow The rotating end rotates synchronously. Wherein, when the sleeve rod 100 rotates, the protective agent can flow to the screw side through the flow channel 200 .

In practical applications, the outer casings of the air conditioners are all made of metal for powder and paint treatment, and are fixed together with screws. When fixing the screw, the surface of the screw head is squeezed by the torque gun, and the anti-corrosion layer will be damaged, which will cause the screw to rust under the action of moisture and rain, and affect the appearance of the outdoor unit of the air conditioner. . In addition, when the screw is seriously corroded, it is easy to cause a failure state, which will cause the problem of fracture and failure, which will affect the safety of the airlift outdoor unit. Corresponding to this, the present application provides an auxiliary device for screw fixing, which is used to improve the reliable connection between the screw and the component to be fixed, and improve the protection layer of the screw due to the extrusion friction damage caused by the rotational force, resulting in rust, screw breakage and The problem of easy slippage caused by rust ensures the reliability and durability of the air conditioner outdoor unit.

Optionally, the screw head is mounted on the front end 110 of the sleeve rod 100, and after the rear end 120 of the sleeve rod 100 is connected with the rotating end of the screw screwing tool, the screw can be aligned with the place to be fixed, and the screw can be used. Select the tool to secure the screw. Since the front end of the sleeve rod 100 is provided with a flow channel 200 that communicates with the hollow cavity, in the process that the sleeve rod 100 rotates synchronously with the screw screwing tool to fix the screw, the protective agent filled in the hollow cavity can The flow channel 200 flows to the side where the screw is located, and can be distributed on the surface of the screw. In this way, in 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 surface of the screw is damaged, the protective coating formed after the protective agent flows to the surface of the screw through the flow channel 200 The layer can provide further protection for the screw to prevent the screw from being corroded or rusted after the fixing is completed, which can improve the life of the screw and its reliability and durability during use.

Optionally, the protective agent may be anti-corrosion oil, preferably anti-corrosion oil with a medium viscosity index between 100 and 170. Alternatively, the protective agent may be an anti-corrosion paint. Alternatively, the repellant may be an abrasion resistant medium. Alternatively, the protective agent may be an antioxidant coating. Optionally, the protective agent may be an anti-corrosion medium. Alternatively, the protective agent may be lubricating oil.

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 .

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 capacity for the screw to prevent the screw from falling. In order to avoid affecting the screw assembly progress.

With the auxiliary device for screw fixing provided by the embodiment of the present disclosure, when the screw driving tool drives the sleeve rod to rotate synchronously to screw the screw into the to-be-fixed piece, the protective agent flows from the hollow cavity to the screw side through the flow channel, and distributes On the surface of the screw, a new protective coating is formed to effectively protect the screw, thus improving the corrosion resistance of the screw and the safety during use.

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

Optionally, in order to further improve the protection of the screw head and improve the stable cooperation between the screw and the front end 110 of the sleeve rod 100, the front end 110 of the sleeve rod 100 is provided with an installation groove 111, and the screw head can be placed in the installation groove 111, Make the mounting groove 111 wrap the screw head. In this way, when the sleeve rod 100 rotates synchronously with the screw screwing device, the screw head is transmitted by the uniform torque force of the installation groove 111, which can effectively prevent the protective layer on the surface of the screw from being damaged due to the uneven pressing force. .

Optionally, the flow channel 200 is opened on the bottom wall of the installation groove 111 to communicate with the inner cavity and the installation groove 111 . In this way, the protective agent filled in the hollow cavity can flow into the installation groove 111 along the flow channel 200, and be distributed on the surface of the screw head, and can also be extended and distributed to the surface of other parts of the screw, thereby forming a protective coating layer, which further protects the screw.

Optionally, the end of the installation slot 111 facing the opening of the screw head may be rounded to prevent the screw from being scratched.

FIG. 4 is a partial enlarged schematic view of an auxiliary device for screw fixation provided by an embodiment of the present disclosure. With reference to FIGS. 3 and 4 , in some embodiments, the flow channel 200 includes a micro-groove flow channel 210 , or a drainage channel 220 , or includes a micro-groove flow channel 210 and a drainage channel 220 . The micro-groove flow channel 210 is disposed on the bottom wall of the installation groove 111 . The drainage channel 220 is extended and formed along the side wall of the installation groove 111 , and the drainage channel 220 is configured as a semicircular opening structure.

Optionally, the sectional shape of the micro-groove flow channel 210 may be a triangle, a circle, or a polygon. Preferably, the shape of the cut surface of the micro-groove flow channel 210 is circular, which can prevent the protective agent from generating a dead angle of flow at the bend of the micro-groove flow channel 210, and can reduce the flow resistance of the protective agent during the flow process, so as to ensure the protective agent. Fluidity of flow.

Optionally, the drainage channel 220 is formed to extend along the side wall of the installation groove 111 , and the drainage channel 220 is configured as a semicircular opening structure. In this way, when the screw head is placed in the installation groove 111, the installation groove 111 wraps the screw head. At this time, the drainage channel 220 is formed on the side wall of the installation groove 111. When the sleeve rod 100 rotates synchronously with the screw-in device , the protective agent flows along the drainage channel 220 and can be in direct contact with the screw head of the screw, so that a protective layer can be formed on each side of the screw head to provide effective protection for the screw, in addition, the protective agent can also be along the surface of the screw head It flows to the surface of the shank of the screw to form a protective layer, so as to provide protection for the screw and improve the corrosion resistance of the screw and the safety during use.

As shown in FIG. 2 and FIG. 3 , 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 and covers the top of the flow channel 200 for absorbing the protective agent, and can be pressurized when the sleeve rod 100 rotates to transmit the protective agent to the flow channel 200 .

During use, when the auxiliary device for screw fixation is at rest, the adsorption layer 300 can absorb the protective agent in the hollow cavity of the sleeve rod 100 , and can keep the protective agent in the hollow cavity of the sleeve rod 100 . Inside the inner cavity, when the auxiliary device for screw fixation is in operation, that is, when the sleeve rod 100 rotates synchronously with the screw-in device, the adsorption layer 300 is subjected to force and can move toward the flow channel 200. The protective agent is delivered to ensure that the protective agent can flow to one side of the screw head along the flow channel 200 , so that the protective agent can form a protective layer on the surface of the screw to improve the corrosion resistance of the screw and its safety during use.

FIG. 5 is a schematic structural diagram of an adsorption layer provided by an embodiment of the present disclosure. As shown in FIG. 5 , optionally, the adsorption layer 300 is a porous material layer.

Optionally, the adsorption layer 300 is made of a porous material foamed plastic polymer, which has good water absorption, can absorb liquid media, and play the role of media penetration and transmission.

Optionally, the thickness of the adsorption layer 300 ranges from 5 mm to 8 mm. In this way, the permeability of the repellant can be ensured.

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 sectional shape of the hollow inner cavity of the sleeve rod 100 is hexagonal, then the sectional shape of the adsorption layer 300 is also set to be hexagonal, and the diameter of the inscribed circle of the hexagonal of the sectional surface of the adsorption layer 300 is greater than or equal to the sleeve The diameter of the hexagonal inscribed circle of the hollow inner cavity section of the rod 100, preferably, the difference between the hexagonal inscribed circle diameter of the section of the adsorption layer 300 and the hexagonal inscribed circle diameter of the hollow inner cavity section of the sleeve rod 100 is 2mm. In this way, when the adsorption layer 300 is installed above the flow channel 200 , the elasticity of the adsorption layer 300 can be used to limit the movement of the adsorption layer 300 at the designed position to prevent the problem of dislocation.

In some embodiments, the auxiliary device for screw fixation further includes an agitator 400 . The stirring member 400 is arranged in the hollow inner cavity of the sleeve rod 100 and is used for stirring the protective agent.

When the auxiliary device for screw fixation is in operation, that is, when the sleeve rod 100 rotates synchronously with the screw-in device, the agitator 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 may be hit. 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 , which improves the transferability of the adsorption layer 300 to the repellant.

In addition, when the auxiliary device for screw fixing is in operation, that is, when the sleeve rod 100 rotates synchronously with the screw-in device, the stirring member 400 moves in the hollow inner cavity of the sleeve rod 100, which can It plays the role of stirring the protective agent. During the action of the agitating member 400, the protective agent is agitated, and the fluidity of the protective agent is improved. When the agitator 400 moves flexibly in the hollow cavity of the sleeve rod 100, the repellant is transferred to the flow channel 200 along the adsorption layer 300, and finally transferred to the surface of the screw head, covering the outer surface of the screw, so as to protect the screw head for effective repair or protection.

Optionally, the stirring member 400 is a spherical structure. In order to improve the roughness of the surface 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-in device, the contact area between the stirring member 400 and the protective agent is increased, and the The effect of the stirring force of the stirring member 400 is improved, thereby improving the effect of the stirring member 400 on the adsorption layer 300, so as to improve the transmission of the protective agent, and ensure the effective repair or protection of the screw head.

In some embodiments, the auxiliary device for screw fixation further includes an injection hole 500 and a seal 600 . The injection hole 500 is formed from the outer wall of the sleeve rod 100 to the hollow inner cavity of the sleeve rod 100 , and is used for supplementing the protective agent to the hollow inner cavity of the sleeve rod 100 . The sealing member 600 is detachably disposed on the injection hole 500 to block the injection hole 500 .

Optionally, through the injection hole 500 , the protective agent can be supplemented into the hollow inner cavity of the sleeve rod 100 to ensure that there is sufficient protective agent in the hollow inner cavity of the sleeve rod 100 . Optionally, the sealing member 600 is detachably provided to the injection hole 500 .

When the protective agent needs to be supplemented into the hollow cavity of the sleeve rod 100, the sealing member 600 is disassembled, and a syringe or other injection tool is used to inject the protective agent into the hollow cavity of the sleeve rod 100. After the injection of the protective agent is completed , reassemble the sealing member 600 to the injection hole 500 to achieve the function of blocking the injection hole 500, ensure the sealing performance of the hollow cavity of the sleeve rod 100, and prevent the leakage of the protective agent.

Optionally, the injection hole 500 is a threaded hole, and the sealing member 600 is a screw threadedly matched with the threaded hole, so as to facilitate the detachability and sealing performance of the sealing member 600 .

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-driving tool is matched with the polygonal rod-shaped structure.

Alternatively, the screw-in tool may be a torque gun. In this case, the rear end 120 of the sleeve rod 100 is configured as a polygonal rod-shaped structure to be assembled and fixed with the telescopic clamping sleeve of the torque gun, so as to realize the transmission of the torque force of the torque gun.

Optionally, the design parameters of the polygonal rod-shaped structure, for example, parameters such as the diameter and length of the circumscribed circle of the polygonal rod-shaped structure, are designed with reference to national standards to ensure the versatility of the auxiliary device for screw fixation, so as to ensure the universality of the auxiliary device for screw fixation. It can be matched with a pneumatic torque gun or can be matched with an electric torque gun.

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 screwed together. In order to facilitate assembly of the components in the hollow interior cavity of the sleeve rod 100, the sleeve rod 100 includes a front section 130 and a rear section 140 that are threadedly connected.

In the actual use process, after the adsorption layer 300 and the agitator 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, and the injection hole 500 is injected into the sleeve rod 100 The protective agent is injected into the hollow inner cavity, and then the sealing member 600 is installed on the injection hole to complete the assembly of the auxiliary device for screw fixation. After the assembly is completed, it can be used directly. By being disposed at the rear end 120 of the sleeve rod 100 and configured as a polygonal rod-like structure, the auxiliary device for screw fixing can be directly connected and fixed with a screw-driving tool such as a pneumatic torque gun or an electric torque gun on the market.

The installation groove 111 provided at the front end 110 of the sleeve rod 100 can be used for installing and accommodating the screw head, so as to ensure more uniform transmission of torque force to the screw head. When the screw-driving tool is working, the sleeve rod 100 can be rotated synchronously with the rotating end of the screw-driving tool, and the rotational force of the screw-driving tool can be transmitted to the screw to realize the fixation or removal of the screw.

In the process of fixing or disassembling the screw, the protective agent will penetrate into the flow channel 200 along the adsorption layer 300, and finally be transferred to the surface of the screw head, so that the protective agent can form a protective layer on the surface of the screw head, so as to realize the The protection or repair function of the screw improves the anti-corrosion effect of the screw, and avoids the problem that the screw is rusted due to extrusion damage in the past when the screw is fixed. 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, so as to improve the fluidity of the protective agent.

In the process of using the auxiliary device for screw fixing, if the protective agent is completely consumed, the sealing member 600 can be removed to open the injection hole 500, and injection tools such as a syringe can be used to inject the protective agent. 600 can be reassembled on the injection hole 500.

The foregoing description and drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples are only representative of possible variations. Unless expressly required, individual components and functions are optional and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. Embodiments of the present disclosure are not limited to the structures that have been described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

An auxiliary device for screw fixation, which is characterized in that it comprises a set of rods, the rods have a hollow inner cavity and are filled with a protective agent, the front end of the rods is used for installing screw heads and the The front end is provided with a flow channel that communicates with the hollow inner cavity, and the rear end of the sleeve rod can be connected with the rotating end of the screw-in tool and can make the sleeve rod rotate synchronously with the rotating end;

Wherein, when the sleeve rod rotates, the protective agent flows to the screw side through the flow channel.
The auxiliary device according to claim 1, wherein the front end of the sleeve rod is provided with a mounting groove which is detachably connected with the screw head, and the flow channel is provided on the bottom wall of the mounting groove to at least The inner cavity and the installation groove are communicated.
The auxiliary device according to claim 2, wherein the flow channel comprises:

A micro-groove flow channel, arranged on the bottom wall of the installation groove; and/or,

The drainage channel is extended and formed along the side wall of the installation groove, and the drainage channel is configured as a semicircular opening structure.
The auxiliary device according to claim 1, further comprising:

The adsorption layer is arranged in the inner cavity, covers the flow channel, is used for absorbing the protective agent, and can be pressurized when the sleeve rod rotates to transmit the protective agent to the flow channel.
The auxiliary device according to claim 4, wherein the adsorption layer is a porous material layer.
The auxiliary device according to any one of claims 1 to 5, characterized in that, further comprising:

An agitating member, disposed in the inner cavity, is used for agitating the protective agent.
The auxiliary device according to claim 6, wherein the stirring member is a spherical structure, and a plurality of grooves are arranged on the spherical surface at intervals.
The auxiliary device according to any one of claims 1 to 5, characterized in that, further comprising:

an injection hole, formed from the outer wall of the sleeve rod to the inner cavity, for replenishing the protective agent to the inner cavity;

The sealing member is detachably arranged on the injection hole and is used to block the injection hole.
The auxiliary device according to any one of claims 1 to 5, wherein the rear end of the sleeve rod is configured as a polygonal rod-shaped structure, and the rotating end of the screw-in tool is matched with the rod-shaped structure .
The auxiliary device according to any one of claims 1 to 5, wherein the sleeve rod comprises a front section and a rear section, and the front section and the rear section are screwed together.