Screw dismounting auxiliary device

Abstract

The application discloses a screw dismounting auxiliary device and relates to the technical field of assembly. The device comprises a shell, a screwdriver operation hole penetrating through the shell, two clamping arms, a cooperation end and a connection end, at least part of the cooperation end is accommodated in the screwdriver operation hole, the end face of the cooperation end is provided with two limiting protrusions, the two limiting protrusions are spaced apart to form a half slot, the end face of the limiting protrusion is provided with a through groove, the two through grooves are opposite, the connection end is movably arranged on the shell to make the two cooperation ends close to each other to jointly define a screw head accommodating space or the two cooperation ends move away from each other, the side wall of the limiting protrusion extending towards the installation end is inclined, the side wall of the limiting protrusion extending away from the installation end is inclined, and at least one elastic element is connected with the clamping arm and always drives the two cooperation ends to move close to each other. The device can avoid screw falling, thereby improving the assembly and / or dismounting efficiency of the screw.

Description

Technical Field

[0001] This application relates to the field of assembly technology, specifically to a screw assembly / disassembly auxiliary device. Background Technology

[0002] In related technologies, during the assembly and disassembly of screws, when the screws are small or the assembly space is narrow, screws often fall off, which seriously affects the assembly or disassembly efficiency. Summary of the Invention

[0003] The main objective of this application is to propose a screw assembly and disassembly auxiliary device, which aims to solve the technical problem that the efficiency of screw assembly and / or disassembly needs to be improved.

[0004] To achieve the above objectives, this application proposes a screw removal and installation auxiliary device, comprising: The housing has a mounting end that mates with the surface where the screw hole is located, and the mounting end has a screwdriver operating hole that penetrates the housing; Two clamping arms, each clamping arm including a mating end and a connecting end, at least a portion of the mating end being received within the screwdriver operating hole, the end face of the mating end having two limiting protrusions, the two limiting protrusions being spaced apart in the extending direction of the screwdriver operating hole to form a receiving half-groove, the end face of the limiting protrusion having a through groove extending in the extending direction of the screwdriver operating hole, the two through grooves of each mating end being opposite each other, the connecting end being movably disposed in the housing such that the two mating ends are brought close to each other until the two receiving half-grooves together define a screw head receiving space, or the two mating ends are moved away from each other; wherein, the limiting protrusion extends obliquely away from the mounting end in a direction close to the other mating end from one sidewall facing the mounting end, and / or, the limiting protrusion extends obliquely away from the mounting end in a direction close to the other mating end from one sidewall facing the mounting end; and At least one elastic element is connected to the clamping arm, and the at least one elastic element is configured to constantly drive the two mating ends to move closer to each other; Wherein, with the screw head housed within the screw head housing space, a portion of the screw shank extends from the screwdriver operating hole at the opening of the mounting end.

[0005] In one embodiment, the cross-sectional shape of the limiting protrusion is trapezoidal.

[0006] In one embodiment, the housing also has two telescopic holes, which are located on both sides of the screwdriver operating hole and are connected to the screwdriver operating hole. The two clamping arms correspond one-to-one with the two telescopic holes, and at least the connecting end of each clamping arm is slidably disposed in the corresponding telescopic hole.

[0007] In one embodiment, there are two elastic elements, each corresponding to one of the two clamping arms, and each elastic element is housed in a telescopic hole and located between the corresponding clamping arm and the housing.

[0008] In one embodiment, the extension direction of the telescopic hole is perpendicular to the extension direction of the screwdriver operating hole, and the two telescopic holes are arranged symmetrically about the central axis of the screwdriver operating hole.

[0009] In one embodiment, the telescopic hole is constructed as a stepped hole, comprising a first hole segment and a second hole segment connected in sequence, the second hole segment being connected to the screwdriver operating hole, and the diameter of the first hole segment being larger than the diameter of the second hole segment; The connecting end is partially slidably disposed within the first hole segment, and the other part of the connecting end is slidably disposed within the second hole segment. The connecting end has a stop portion that mates with the stepped surface of the stepped hole. The elastic element is constructed as a cylindrical spring and is housed within the first hole segment and located between the housing and the connecting end.

[0010] In one embodiment, the housing includes: The shell body has the mounting end; and Two protruding portions are respectively provided on both sides of the shell body, and each of the protruding portions has a telescopic hole. Wherein, in the extending direction of the screwdriver operating hole, the mounting end protrudes from the boss.

[0011] In one embodiment, the screw removal and installation auxiliary device further includes at least two bases, a portion of which is detachably connected to one of the boss portions near the mounting end, and another portion of which is detachably connected to another of the boss portions near the mounting end. The base is adapted to mate with the surface where the screw hole is located, and when the base mates with the surface where the screw hole is located, the base protrudes from the mounting end in the extending direction of the screwdriver operating hole.

[0012] In one embodiment, the sidewall of the portion of the mating end that extends into the screwdriver operating hole slides into contact with the sidewall of the screwdriver operating hole.

[0013] In one embodiment, the cross-sectional shape of the screwdriver operating hole is rectangular; The screwdriver operating hole has two sets of opposite sidewalls extending in a direction parallel to the extension direction of the screwdriver operating hole and each having a telescopic hole. The other set of two opposite sidewalls of the screwdriver operating hole includes a tapered section, a constant-width section, and a gradually expanding section connected in sequence in the direction near the mounting end. The tapered section extends gradually at an incline in a direction close to the central axis of the screwdriver operating hole, and the gradually expanding section extends gradually at an incline in a direction away from the central axis of the screwdriver operating hole. The sidewall of the part of the mating end that extends into the screwdriver operating hole slides and contacts the constant-width section.

[0014] The technical solution of this application can achieve the following technical effects: The screw assembly / disassembly auxiliary device provided in this application has two clamping arms that, under the action of an elastic element, move closer together, causing the receiving half-grooves at the mating end faces of the clamping arms to jointly define a screw head receiving space. This screw head receiving space is used to clamp the screw during assembly / disassembly. Furthermore, the limiting protrusion extends obliquely away from the mounting end on one side wall facing the mounting end, and / or, the limiting protrusion extends obliquely away from the mounting end on one side wall facing the mounting end, i.e., at least one of the two surfaces of the limiting protrusion at the mating end that mate with the screw head is constructed as an inclined surface. Therefore, when the screwdriver is inserted into the screwdriver operating hole to tighten the screw, the two clamping arms can be forced to overcome the force provided by the elastic element and move away from each other, causing the screw to enter or leave the screw head receiving space. Thus, the screw assembly / disassembly auxiliary device provided in this application can hold the screw in place through the screw head receiving space during screw assembly and / or disassembly, preventing the screw from falling out and improving the efficiency of screw assembly and / or disassembly. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a screw removal and installation auxiliary device provided in one embodiment of this application; Figure 2 This is a partial sectional view of the front view of a screw removal and installation auxiliary device provided in an embodiment of this application; Figure 3 This is a partial cross-sectional schematic diagram of a top view of a screw removal and installation auxiliary device provided in an embodiment of this application; Figure 4This is a partial cross-sectional view of the left side of a screw removal and installation auxiliary device provided in an embodiment of this application; Figure 5 This is a bottom view of a screw removal and installation auxiliary device provided in an embodiment of this application; Figure 6 This is a schematic diagram of the clamping arm of a screw removal and installation auxiliary device according to an embodiment of this application; Figure 7 This is an example of an operation diagram of a screw removal and installation auxiliary device provided in this application; Figure 8 This is an example of an operational schematic diagram of a screw removal and installation auxiliary device provided in this application; wherein the screw head is located above the screw head receiving space; Figure 9 This is an example of an operational schematic diagram of a screw removal and installation auxiliary device provided in this application; wherein the screw head is located above the limiting protrusion; Figure 10 This is an example of an operational schematic diagram of a screw removal and installation auxiliary device provided in this application; wherein the screw head is located below the limiting protrusion.

[0017] Explanation of icon numbers: 1. Screw head receiving space; 2. Receiving half groove; 100. Screw disassembly and assembly auxiliary device; 10. Housing; 11. Housing body; 111. Mounting end; 112. Screwdriver operating hole; 1121. Tapered section; 1122. Equal width section; 1123. Tapered expansion section; 12. Boss part; 121. Telescopic hole; 1211. First hole section; 1212. Second hole section; 20. Clamping arm; 21. Mating end; 211. Limiting protrusion; 2111. Through groove; 22. Connecting end; 221. Stop part; 30. Elastic element; 40. Base; 50. Side cover plate; 200. Screwdriver; 300. Screw; 400. Product.

[0018] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0020] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0022] Screws, as fundamental industrial fasteners, serve functions such as connection and fixation, positioning and locking, and force transmission, and are widely used in machinery, electronics, automotive, aerospace, and home appliances. Despite rapid advancements in automation, manual processes still constitute a significant portion of product assembly and disassembly. Screws, being one of the most common fasteners, are frequently tightened and loosened during product manufacturing. When screws are small or in confined assembly spaces, it is difficult to hold them securely by hand, often resulting in them falling. If the space where a screw falls is narrow or complex, removing it becomes extremely difficult, severely impacting assembly efficiency.

[0023] Therefore, this application provides a solution that uses a screw head receiving space that automatically opens and closes during screwdriver tightening to hold the screw in place, preventing it from falling out and thus improving the efficiency of screw assembly and / or disassembly.

[0024] The technical concept of this application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 This application provides a screw removal and installation auxiliary device 100. In this embodiment, the screw removal and installation auxiliary device 100 includes: a housing 10, two clamping arms 20, and at least one elastic element 30.

[0026] The housing 10 has a mounting end 111 that mates with the surface containing the screw hole, and the mounting end 111 has a screwdriver operating hole 112 that penetrates the housing 10. The clamping arm 20 includes a mating end 21 and a connecting end 22. At least a portion of the mating end 21 is accommodated within the screwdriver operating hole 112. The end face of the mating end 21 has two limiting protrusions 211, which are spaced apart in the extending direction of the screwdriver operating hole 112 to form a receiving half-groove 2. The end face of the limiting protrusions 211 has a through groove 2111 extending in the extending direction of the screwdriver operating hole 112. The two through grooves 2111 of each mating end 21 are opposite each other. The connecting end 22 is movably disposed on the housing 10 so that the two mating ends 21 are brought closer to each other. Two receiving half-grooves 2 together define a screw head receiving space 1 or two mating ends 21 that are far apart from each other; wherein, the limiting protrusion 211 extends obliquely away from the mounting end 111 in a direction close to the other mating end 21 on one side wall facing the mounting end 111, and / or, the limiting protrusion 211 extends obliquely away from the mounting end 111 in a direction close to the other mating end 21 on one side wall facing away from the mounting end 111; the elastic element 30 is connected to the clamping arm 20, and at least one elastic element 30 is configured to constantly drive the two mating ends 21 to move closer to each other; when the screw head is received in the screw head receiving space 1, a portion of the screw shank extends out of the mounting end 111 from the screwdriver operating hole 112 at the opening of the mounting end 111.

[0027] Specifically, the housing 10 is the main body of the screw removal and installation auxiliary device 100, and it has a mounting end 111 that mates with the surface where the screw hole is located. This allows the device to be positioned by extending into a narrow space during screw removal and installation, either directly contacting the surface where the screw hole is located or maintaining a certain distance. It is understood that parts of the housing 10, such as the mounting end 111 or the housing 10 as a whole, can be adaptively designed or modified according to the shape of the narrow space to be used, so that it can extend into the narrow space. For example, in some specific embodiments, the housing 10 is constructed as a flat shape to allow it to extend into the narrow spaces of various products as much as possible while having sufficient volume for the operator to hold. A screwdriver operating hole 112 is defined within the housing 10, extending along the length of the housing 10, such as through both ends of the housing 10 in a vertical direction. The screwdriver operating hole 112 is a straight hole, allowing the screwdriver to extend into it and mate with the screw head to tighten the screw. On the end face of the mounting end 111, the screwdriver operating hole 112 can be opened at the central axis of the housing 10, or it can be opened eccentrically. This embodiment does not limit this.

[0028] Two clamping arms 20 provide a screw head receiving space 1 that can be closed or opened within the screwdriver operating hole 112. Specifically, the portion of the clamping arm 20 that mates with the screw within the screwdriver operating hole 112 is the mating end 21, and the portion that mates with the housing 10 is the connecting end 22. In some embodiments, the clamping arm 20 can be integrally arranged within the screwdriver operating hole 112, such as by arranging the clamping arm 20 approximately along the extending direction of the screwdriver operating hole 112, with its upper end pivotally connected to the side wall of the screwdriver operating hole 112, and its lower end extending freely downwards. Thus, as the upper ends rotate synchronously and symmetrically, the lower ends of the two clamping arms 20 move closer to or further away from each other.

[0029] Of course, having the entire clamping arm 20 located within the screwdriver operating hole 112 would increase the overall size of the screwdriver, and consequently increase the overall size of the housing 10, making it unsuitable for use in confined spaces. Therefore, in other specific embodiments, please refer to... Figure 1 , Figure 2 , Figure 3 and Figure 4 The housing 10 also has two telescopic holes 121, which are located on both sides of the screwdriver operating hole 112 and communicate with it. Two clamping arms 20 correspond one-to-one with the two telescopic holes 121, and at least the connecting end 22 of each clamping arm 20 is slidably disposed within the corresponding telescopic hole 121. Thus, each clamping arm 20 is only partially accommodated within the screwdriver operating hole 112, while the majority of it is accommodated within the housing 10 and slides within the telescopic hole 121. As the clamping arms 20 slide, as more of them extend into the screwdriver operating hole 112, the mating ends 21 of the two clamping arms 20 gradually approach each other; conversely, as less of the clamping arms 20 extend into the screwdriver operating hole 112, the mating ends 21 of the two clamping arms 20 gradually move away from each other. Of course, the telescopic hole 121 can extend along a direction perpendicular to the central axis of the screwdriver operating hole 112, and its extension direction can also be arranged at a certain angle with the central axis of the screwdriver operating hole 112. This specific embodiment does not limit this. Please refer to... Figure 1 , Figure 2 , Figure 3 and Figure 4In one specific embodiment, the extension direction of the telescopic hole 121 is perpendicular to the extension direction of the screwdriver operating hole 112, and the two telescopic holes 121 are symmetrically arranged about the central axis of the screwdriver operating hole 112. The following description assumes that the telescopic holes 121 extend in a direction perpendicular to the central axis of the screwdriver operating hole 112, i.e., extend in the left-right direction and are symmetrically arranged. It is easy to see that in this specific embodiment, by using the telescopic hole 121 to house part of the clamping arm 20 within the housing 10, the volume of the screwdriver operating hole 112 is reduced, thereby reducing the overall volume of the housing 10 and making the housing 10 more compact and convenient for use in narrow spaces.

[0030] The mating end 21 of the clamping arm 20 can be constructed as a cylinder, a prism, or other shapes, and this embodiment is not limited in this respect. The following description uses a straight prism shape as an example. Two limiting protrusions 211 protrude along the length of the end face of the mating end 21. These two limiting protrusions 211 are symmetrically arranged and spaced apart vertically to form a receiving half-groove 2. When the distance between the two mating ends 21 is sufficiently close, the two receiving half-grooves 2 can jointly define a screw head receiving space 1. It is understood that the limiting protrusions 211 of the two mating ends 21 can abut against each other to jointly define a screw head receiving space 1. Alternatively, the limiting protrusions 211 of the two mating ends 21 can face each other directly, and the distance between them is less than the diameter of the screw head, thus securing the screw head.

[0031] The end face of the limiting protrusion 211 has a through groove 2111 along the vertical direction. The through groove 2111 of the upper limiting protrusion 211 connects the receiving half-groove 2 and the screwdriver operating hole 112 above it, and the through groove 2111 of the lower limiting protrusion 211 connects the receiving half-groove 2 and the screwdriver operating hole 112 below it. In this way, the tip of the screwdriver can be inserted into the screw head receiving space 1 through the upper through groove 2111 to tighten the screw, or it can pass through the upper through groove 2111, the screw head receiving space 1, and the lower through groove 2111 in sequence to continue tightening the screw that is mostly screwed into the screw hole. The shank of the screw can extend out of the screw head receiving space 1 through the lower through groove 2111 until it extends out of the screwdriver operating hole 112. It is worth mentioning that the through groove 2111 can be constructed as a rectangular groove, an arc groove, or other irregular grooves. This embodiment is not limited to this, as long as the through groove 2111 allows the shank of the screw to pass through but does not allow the screw head to pass through. It is also worth mentioning that the two through slots 2111 on the same mating end 21 are directly opposite each other.

[0032] The upper surface of the limiting protrusion 211, i.e., the side wall of the limiting protrusion 211 facing away from the mounting end 111, extends obliquely in the direction close to the mounting end 111, so that when the screw moves downward, the screw head exerts pressure on the clamping arm 20. The pressure is decomposed into downward and left / right components, forcing the two clamping arms 20 away from each other. In this way, the screw head can be kept in place by the screw head receiving space 1 during screw assembly without affecting the normal assembly of the screw.

[0033] Alternatively, the lower surface of the limiting protrusion 211, i.e., the side wall of the limiting protrusion 211 facing the mounting end 111, extends obliquely away from the mounting end 111 in the direction close to the other mating end 21. This allows the screw head to exert pressure on the clamping arm 20 as the screw moves upward. This pressure is decomposed into upward and left / right components, forcing the two clamping arms 20 away from each other. This ensures that the screw head remains held in place by the screw head receiving space 1 during screw removal without affecting normal screw removal.

[0034] Alternatively, the upper surface of the limiting protrusion 211 extends obliquely towards the mounting end 111 in the direction near the other mating end 21, and the lower surface of the limiting protrusion 211 extends obliquely away from the mounting end 111 in the direction near the other mating end 21. This results in the limiting protrusion 211 having a trapezoidal or triangular cross-sectional shape. Thus, when the screw moves up and down under the force of the screwdriver, the screw head exerts pressure on the clamping arm 20. Since the contact surface between the screw head and the clamping arm 20 is inclined, the pressure is distributed in the up-down and left-right directions. The force in the left-right direction pushes the clamping arm 20 to both sides. This ensures that the screw head is held in place by the screw head receiving space 1 during screw removal and installation without affecting normal screw removal and installation. It is worth mentioning that, please refer to... Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 In some specific embodiments, to prevent the limiting protrusions 211 from colliding with each other and being damaged, the cross-sectional shape of the limiting protrusions 211 is trapezoidal. In addition, the trapezoidal structure can also make the structural strength of the limiting protrusions 211 better, thereby more reliably locking the screw, and can also prevent damage under the action of the screwdriver.

[0035] The number of elastic elements 30 is at least one, which is used to drive the two mating ends 21 closer together. In some embodiments, there may be one elastic element 30, with its two ends connected to two clamping arms 20 respectively, forcing the two mating ends 21 closer together. Alternatively, in other embodiments, there may be two or more elastic elements 30, with some elastic elements 30 connected between the housing 10 and one clamping arm 20, and other elastic elements 30 connected between the housing 10 and another clamping arm 20, forcing the two mating ends 21 closer together. Of course, the elastic element 30 can be constructed as a cylindrical spring, torsion spring, sheet spring, elastic rubber, etc., and this embodiment is not limited to this. Furthermore, the elastic element 30 may be accommodated within the screwdriver operating hole 112, or may be partially accommodated within the screwdriver operating hole 112, and this embodiment is also not limited to this. Alternatively, in one embodiment, please refer to... Figure 1 , Figure 2 , Figure 3 and Figure 4 There are two elastic elements 30, each corresponding to one of the two clamping arms 20. Each elastic element 30 is housed within a telescopic hole 121 and located between the corresponding clamping arm 20 and the housing 10. The elastic element 30 can be constructed as a compression cylindrical spring, a sheet spring, or elastic rubber, etc. It is located between the connecting end 22 of the clamping arm 20 and the end face of the telescopic hole 121 and is compressed, thereby driving the clamping arm 20 to move towards the screwdriver operating hole 112. In this way, each clamping arm 20 is driven by its respective elastic element 30, thereby improving the reliability of the clamping action of the clamping arm 20 and making the clamping effect of the screw head receiving space 1 more reliable.

[0036] Furthermore, the elastic element 30 constantly drives the two clamping arms 20 to move closer to each other, so the two clamping arms 20 can brake each other, that is, when the limiting protrusions 211 of the mating ends 21 of the two clamping arms 20 abut against each other, the two clamping arms 20 no longer move. Or, in a specific embodiment, please refer to Figure 2 and Figure 3The telescopic hole 121 is constructed as a stepped hole, including a first hole segment 1211 and a second hole segment 1212 connected in sequence. The second hole segment 1212 communicates with the screwdriver operating hole 112, and the diameter of the first hole segment 1211 is larger than the diameter of the second hole segment 1212. Part of the connecting end 22 is slidably disposed within the first hole segment 1211, and the other part of the connecting end 22 is slidably disposed within the second hole segment 1212. The connecting end 22 has a stop portion 221 that mates with the stepped surface of the stepped hole. The elastic element 30 is constructed as a cylindrical spring and is housed within the first hole segment 1211 and located between the housing 10 and the connecting end 22. Thus, the travel of the clamping arm 20 is limited by the protruding stop portion 221 and the stepped surface, thereby facilitating the installation of the elastic element 30 and the clamping arm 20. Furthermore, the cross-section of the telescopic hole 121 can be constructed as a circular hole or a square hole, etc., and this embodiment is not limited in this regard.

[0037] In addition, the housing 10 has a screwdriver operating hole 112 in the vertical direction and two telescopic holes 121 in the horizontal direction. If the housing 10 is tubular in shape, the wall thickness of the housing 10 will be relatively thick. Therefore, in a specific embodiment, the housing 10 includes: a housing body and two bosses 12. The housing body has a mounting end 111. The two bosses 12 are respectively protruding on both sides of the housing body, and each boss 12 has a telescopic hole 121. In the extending direction of the screwdriver operating hole 112, the mounting end 111 protrudes from the boss.

[0038] Specifically, please refer to Figure 1 Since the screwdriver operating hole 112 and the two left and right telescopic holes 121 are integrally constructed in a "+" shape, the housing 10 can be designed in a "+" shape accordingly. That is, the main body of the housing is constructed as the vertical part of the "+", and the two bosses 12 are constructed as the horizontal part of the "+", thus making the overall structure of the housing 10 more compact. It is also worth mentioning that, in order to facilitate the insertion of the mounting end 111 into the narrow space, the mounting end 111 protrudes from the bosses 12 in the extension direction of the screwdriver operating hole 112, that is, to avoid the mounting end 111 and the bosses 12 being on the same horizontal plane.

[0039] It is worth mentioning that, when the screw head is contained within the screw head receiving space 1, the shank of the screw extends out of the mounting end 111 through the opening of the screwdriver operating hole 112 at the mounting end 111. This ensures that the shank of the screw is already inside the screw hole before the screw head detaches from the screw head receiving space 1, thus preventing the screw from falling out due to the shank failing to engage with the screw thread after the screw head detaches from the screw head receiving space 1.

[0040] It is easy to see that the two clamping arms 20 of the screw removal and installation auxiliary device 100 provided in this embodiment approach each other under the action of the elastic member 30, so that the receiving half groove 2 at the end face of the mating end 21 of the clamping arm 20 jointly defines a screw head receiving space 1. The screw head receiving space 1 is used to clamp the screw during the removal and installation process. In addition, the limiting protrusion 211 extends obliquely away from the mounting end 111 in the direction close to the other mating end 21 on one side wall facing the mounting end 111, and / or, the limiting protrusion 211 extends obliquely away from the mounting end 111 in the direction close to the other mating end 21 on one side wall facing away from the mounting end 111. That is, at least one of the two surfaces of the limiting protrusion 211 of the mating end 21 that mate with the screw head is constructed as an inclined surface. So when the screwdriver is inserted into the screwdriver operating hole 112 to tighten the screw, the two clamping arms 20 can be forced to overcome the force provided by the elastic member 30 and move away from each other, so that the screw enters or leaves the screw head receiving space 1. Therefore, the screw assembly and / or disassembly auxiliary device 100 provided in this application can hold the screw in place through the screw head receiving space 1 during the screw assembly and / or disassembly process, thereby preventing the screw from falling out and improving the efficiency of screw assembly and / or disassembly.

[0041] Furthermore, in practice, the narrow assembly space may be quite deep, making it difficult for the mounting end 111 to contact the surface where the screw hole is located, or the surface where the screw hole is located may be an irregular shape. Therefore, in one embodiment, please refer to... Figure 1 and Figure 2 The screw removal and installation auxiliary device 100 also includes at least two bases 40. One part of the base 40 is detachably connected to the side of a boss 12 near the mounting end 111, and the other part of the base 40 is detachably connected to the side of another boss 12 near the mounting end 111. The base 40 is adapted to mate with the surface where the screw hole is located, and when the base 40 mates with the surface where the screw hole is located, the base 40 protrudes from the mounting end 111 in the extending direction of the screwdriver operating hole.

[0042] Specifically, the screw removal and installation auxiliary device 100 also includes two bases 40, which are detachably fitted to the boss portion 12. In the extension direction of the screwdriver operating hole, the base 40 protrudes beyond the mounting end 111, thereby replacing the end face of the mounting end 111 in mating with the surface where the screw hole is located, thus improving the environmental applicability of the screw removal and installation auxiliary device 100. The base 40 can be constructed as a rod or other shapes. For example, in one specific embodiment, the lower surface of the boss portion 12 has threaded holes for fixing the base 40. One end of the base 40 is a support platform adapted to mate with the surface where the screw hole is located, and the other end is a mounting platform with a pair of mounting holes for the base 40. The mounting platform is fixed to the boss portion 12 by fasteners such as pins or screws.

[0043] It is worth mentioning that the screw removal and installation auxiliary device 100 may include multiple sets of bases 40 with different heights and dimensions. Each set of bases 40 must ensure that during use, after the screw head enters below the screw head receiving space 1, part of the screw's thread is still not fully unscrewed. This is to prevent the screw head from failing to be held in the screw head receiving space 1 and falling out after the screw is fully unscrewed.

[0044] Furthermore, during the assembly and disassembly of screws, it often happens that the screwdriver slips out of the screw head's slot, scratching the product and affecting its quality and appearance. This is especially true when the screw is small and a slotted screw; when applying force with the screwdriver, one hand needs to hold the small screw while the other hand applies force, making it easy for the screwdriver to slip off the screw. The downward force of the screwdriver directly scratches the product. Therefore, in one embodiment, please refer to... Figure 3 The side wall of the part of the mating end 21 that extends into the screwdriver operating hole 112 slides and contacts the side wall of the screwdriver operating hole 112.

[0045] Thus, after the screwdriver enters the screwdriver operating hole 112, even if the screwdriver falls off the screw head, there is no gap between the two sides of the screwdriver because the mating end 21 and the side wall of the screwdriver operating hole 112 slide and contact each other. Therefore, there is no space for the screwdriver head to pass through, which can prevent the screwdriver from scratching the product surface.

[0046] At this time, the screwdriver operating hole 112 can be constructed as a rectangular hole, the width of which is basically the same as the width of the mating end 21, so that the mating end 21 can slide and contact the sidewall of the screwdriver operating hole 112. However, this arrangement will result in a smaller hole diameter for the screwdriver operating hole 112, making it inconvenient for workers to insert the screwdriver into the screwdriver operating hole 112, and also inconvenient for workers to align the screw removal and installation auxiliary device 100 with the screw hole. Therefore, in one embodiment, please refer to Figure 1 , Figure 4 The screwdriver operating hole 112 has a rectangular cross-sectional shape. One set of two opposite sidewalls of the screwdriver operating hole 112 extends in a direction parallel to the extension direction of the screwdriver operating hole 112 and is provided with telescopic holes 121. The other set of two opposite sidewalls of the screwdriver operating hole 112 includes a tapered section 1121, a constant-width section 1122, and a gradually expanding section 1123 connected in sequence in the direction near the mounting end 111. The tapered section 1121 extends gradually at an incline in the direction near the central axis of the screwdriver operating hole 112, and the gradually expanding section 1123 extends gradually at an incline in the direction away from the central axis of the screwdriver operating hole 112. The sidewall of the part of the mating end 21 that extends into the screwdriver operating hole 112 slides and contacts the constant-width section 1122.

[0047] Specifically, please refer to Figure 2The left and right side walls of the screwdriver operating hole 112 are both vertical surfaces, and each has a telescopic hole 121 for extending the mating end 21 of the clamping arm 20 into the screwdriver operating hole 112. Please refer to [link / reference]. Figure 4 The front and rear side walls of the screwdriver operating hole 112 are divided into three sections, from top to bottom: a tapering section 1121, a constant width section 1122, and a widening section 1123. This makes the openings at both ends of the screwdriver operating hole 112 flared, which makes it easier for workers to insert the screwdriver into the screwdriver operating hole 112 and also makes it easier for workers to align the screw removal and installation auxiliary device 100 with the screw hole.

[0048] Therefore, the screw disassembly and assembly auxiliary device 100 provided in this application can prevent the screwdriver from slipping out of the groove of the screw head and scratching the product during the screw disassembly and assembly process, and can also prevent small screws from falling because they are difficult to hold steady by hand, thereby improving the quality and efficiency of screw disassembly and assembly.

[0049] To make it easier to understand, a specific example is shown below.

[0050] A screw assembly / disassembly auxiliary device includes a housing 10, a clamping arm 20, a spring, a base 40, and a side cover plate 50. The housing 10 has a cross-shaped channel, with a vertically extending portion serving as a screwdriver operating hole 112 for screw assembly and disassembly, and a horizontally extending portion containing two telescopic holes 121. The housing body 11 of the housing 10 has a pair of symmetrical bosses 12 on its left and right sides. The bosses 12 have threaded holes on both sides for fixing the side cover plate 50, and a threaded hole at the bottom for fixing the base 40. The telescopic holes 121, from the outside in, sequentially include a first hole section 1211 and a second hole section 1212, thus forming a stepped hole. One end of the clamping arm 20 has a stop portion 221 and an arm protrusion, and the other end has a pair of trapezoidal limiting protrusions 211, with an arc-shaped through groove on the end face of each limiting protrusion 211. The base 40 has a support platform at one end and a mounting platform at the other end, with a pair of mounting holes on the mounting platform. The side cover plate 50 has a pair of mounting holes, a pair of spring limiting blocks, and a protruding head. The clamping arm 20 is installed within the first hole section 1211 and the second hole section 1212. A spring is installed in the first hole section 1211 outside the clamping arm 20, and the spring is limited by the side cover plate 50, which is fixed to the protrusion 12, enclosing the spring within the first hole section 1211. One end of the spring is fitted onto the slider protrusion, and the other end is fitted onto the protrusion of the side cover plate 50 to prevent the spring from sliding freely. The base 40 is installed below the protrusion 12, the mounting platform is connected to the housing 10, and the support platform is in direct contact with the product 400 or equipment where the screw needs to be applied.

[0051] Please see Figure 1In its natural state, under the elastic force of the corresponding outer springs, the two clamping arms 20 slide to the position closest to the center of the screw removal and installation auxiliary device 100, and the two clamping arms 20 are in a closed state. At this time, the two arc-shaped through grooves 2111 at the closed position are aligned to form a circular through hole. The diameter of the circular through hole is larger than the diameter of the shank of the screw 300 but smaller than the diameter of the screw head. Without external force, the shank of the screw 300 can pass through freely, but the head cannot. Please refer to [link / reference]. Figure 7 , Figure 8 , Figure 9 and Figure 10 When the screw 300 moves downwards or upwards under the action of external force, the screw head exerts a force perpendicular to the contact surface on the clamping arm 20. Since the clamping arm 20 has a trapezoidal structure, the force exerted by the screw head on the clamping arm 20 is decomposed into vertical and horizontal directions. The horizontal force causes the two clamping arms 20 to slide backwards under the compression spring until the screw head passes smoothly through the clamping arm 20. After the screw passes through the clamping arm 20, the force exerted by the screw head on the clamping arm 20 disappears. At this time, the clamping arm 20 slides towards the center again under the elastic force of the spring until it closes.

[0052] When removing the screw, place the screw removal and installation auxiliary device 100 above the product 400, aligning the circular through-hole at the closed end of the two clamping arms 20 with the screw. Insert the head of the screwdriver 200 through the circular through-hole into the slot of the screw head, and slowly unscrew the screw 300 until the screw head touches the limiting protrusion 211 of the clamping arm 20, thus exerting a force on the clamping arm 20. The force of the screw head on the clamping arm 20 overcomes the spring force, compressing the spring and pushing the clamping arm 20 outwards from the auxiliary device. Once the clamping arm 20 opens to a certain size, the screw head passes through the clamping arm 20, the force of the screw on the clamping arm 20 disappears, and the clamping arm 20 closes again under the spring force. At this point, the screw head is stuck in the screw head receiving space 1, and the screw will not fall out of the screw removal and installation auxiliary device 100 without external force. After the screw is completely unscrewed, remove the screw removal and installation auxiliary device 100 and the screw 300 together, completing the screw removal process. When it is necessary to remove a screw from the screw removal and installation auxiliary device 100, you can directly pull down or push the screw from below the screw removal and installation auxiliary device 100 by hand, or use a tool to push the screw up or down so that the screw pushes the clamping arm 20 open and can then be removed.

[0053] When assembling screws, first put the screws into the screw disassembly and assembly auxiliary device 100. The method of insertion is as follows: insert from the top of the screw disassembly and assembly auxiliary device 100 with the screw head facing upward. Pass the shank of the screw 300 through the circular through hole between the two clamping arms 20. The screw head is stuck above the clamping arm 20. Then use a screwdriver 200 or other tools to drag the screw 300 downward. The screw head exerts pressure on the first pair of trapezoidal limiting protrusions 211 that are first contacted. Drag the clamping arm 20 to open until the screw head passes through the first pair of trapezoidal limiting protrusions 211 and reaches the screw head receiving space 1. Then the clamping arm 20 closes again under the action of the spring force to lock the screw 300. (2) Insert from the bottom of the screw disassembly and assembly auxiliary device 100. Use the screw head to push the clamping arm 20 open from the bottom so that the screw head passes through the first pair of trapezoidal limiting protrusions 211 that are first contacted and reaches the screw head receiving space 1. Then the clamping arm 20 closes again under the action of the spring force to lock the screw 300. Next, place the screw assembly / disassembly auxiliary device 100 and the screw 300 together at the screw assembly position, aligning the screw with the screw hole at the installation position. Then, insert a screwdriver into the device, insert the screwdriver head into the groove of the screw head, and screw the screw into the screw hole. After tightening the screw, remove the screw assembly / disassembly auxiliary device 100 to complete the screw assembly work.

[0054] In this example, by combining the trapezoidal limiting protrusion 211 with a spring structure, the clamping arm 20 opens and closes under the action of external force and spring elasticity, thereby locking and allowing the screw to pass through. Furthermore, the trapezoidal structure of the limiting protrusion 211 allows the screw to be held within the screw removal and assembly auxiliary device 100 after disassembly and before assembly, preventing the screw from falling out. During disassembly and assembly, the screw removal and assembly auxiliary device 100 limits the screw, preventing the screwdriver from slipping out of the screw head and scratching the product, and preventing the screw from falling out. Moreover, compared to related technologies, which often struggle to simultaneously meet the requirements of ensuring the screw doesn't fall out during disassembly and assembly, and the need for space constraints, the screw removal and assembly auxiliary device provided in this example has a simple structure, small size, and can simultaneously meet the needs of assembly and disassembly, adapting to the requirements of use in confined and complex environments. Therefore, this example provides a screw disassembly and assembly auxiliary device that addresses the problems of high operational difficulty, screwdriver scratches, and screw falling during screw disassembly and assembly in confined spaces. This device is simple in structure, small in size, and easy to use, thereby improving the quality and efficiency of disassembly and assembly, and can also adapt to the requirements of use in confined and complex environments.

[0055] The above description is merely an exemplary embodiment of this application and does not limit the scope of protection of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A screw assembly / disassembly auxiliary device, characterized in that, include: The housing has a mounting end that mates with the surface where the screw hole is located, and the mounting end has a screwdriver operating hole that penetrates the housing; Two clamping arms, each clamping arm including a mating end and a connecting end, at least a portion of the mating end being received within the screwdriver operating hole, the end face of the mating end having two limiting protrusions, the two limiting protrusions being spaced apart in the extending direction of the screwdriver operating hole to form a receiving half-groove, the end face of the limiting protrusion having a through groove extending in the extending direction of the screwdriver operating hole, the two through grooves of each mating end being opposite each other, the connecting end being movably disposed in the housing such that the two mating ends are brought close to each other until the two receiving half-grooves together define a screw head receiving space, or the two mating ends are moved away from each other; wherein, the limiting protrusion extends obliquely away from the mounting end in a direction close to the other mating end from one sidewall facing the mounting end, and / or, the limiting protrusion extends obliquely away from the mounting end in a direction close to the other mating end from one sidewall facing the mounting end; and At least one elastic element is connected to the clamping arm, and the at least one elastic element is configured to constantly drive the two mating ends to move closer to each other; Wherein, with the screw head housed within the screw head housing space, a portion of the screw shank extends from the screwdriver operating hole at the opening of the mounting end.

2. The screw disassembly and assembly auxiliary device as described in claim 1, characterized in that, The cross-sectional shape of the limiting protrusion is trapezoidal.

3. The screw disassembly and assembly auxiliary device as described in claim 1, characterized in that, The housing also has two telescopic holes, which are located on both sides of the screwdriver operating hole and are connected to the screwdriver operating hole. The two clamping arms correspond one-to-one with the two telescopic holes, and at least the connecting end of each clamping arm is slidably disposed in the corresponding telescopic hole.

4. The screw disassembly and assembly auxiliary device as described in claim 3, characterized in that, The number of elastic elements is two, and the two elastic elements correspond one-to-one with the two clamping arms. Each elastic element is housed in a telescopic hole and located between the corresponding clamping arm and the housing.

5. The screw disassembly and assembly auxiliary device as described in claim 4, characterized in that, The extension direction of the telescopic hole is perpendicular to the extension direction of the screwdriver operating hole, and the two telescopic holes are arranged symmetrically about the central axis of the screwdriver operating hole.

6. The screw disassembly and assembly auxiliary device as described in claim 5, characterized in that, The telescopic hole is constructed as a stepped hole, comprising a first hole segment and a second hole segment connected in sequence. The second hole segment is connected to the screwdriver operating hole, and the diameter of the first hole segment is larger than the diameter of the second hole segment. The connecting end is partially slidably disposed within the first hole segment, and the other part of the connecting end is slidably disposed within the second hole segment. The connecting end has a stop portion that mates with the stepped surface of the stepped hole. The elastic element is constructed as a cylindrical spring and is housed within the first hole segment and located between the housing and the connecting end.

7. The screw removal and assembly auxiliary device as described in any one of claims 3 to 6, characterized in that, The housing includes: The shell body has the mounting end; and Two protruding portions are respectively provided on both sides of the shell body, and each of the protruding portions has a telescopic hole. Wherein, in the extending direction of the screwdriver operating hole, the mounting end protrudes from the boss.

8. The screw disassembly and assembly auxiliary device as described in claim 7, characterized in that, The screw removal and installation auxiliary device also includes at least two bases, one part of which is detachably connected to the side of one of the bosses near the mounting end, and the other part of which is detachably connected to the side of another boss near the mounting end. The base is adapted to mate with the surface where the screw hole is located, and when the base mates with the surface where the screw hole is located, the base protrudes from the mounting end in the extending direction of the screwdriver operating hole.

9. The screw removal and assembly auxiliary device as described in any one of claims 3 to 6, characterized in that, The sidewall of the portion of the mating end that extends into the screwdriver operating hole slides and contacts the sidewall of the screwdriver operating hole.

10. The screw removal and assembly auxiliary device as described in claim 9, characterized in that, The cross-sectional shape of the screwdriver operating hole is rectangular; The screwdriver operating hole has two sets of opposite sidewalls extending in a direction parallel to the extension direction of the screwdriver operating hole and each having a telescopic hole. The other set of two opposite sidewalls of the screwdriver operating hole includes a tapered section, a constant-width section, and a gradually expanding section connected in sequence in the direction near the mounting end. The tapered section extends gradually at an incline in a direction close to the central axis of the screwdriver operating hole, and the gradually expanding section extends gradually at an incline in a direction away from the central axis of the screwdriver operating hole. The sidewall of the part of the mating end that extends into the screwdriver operating hole slides and contacts the constant-width section.

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