Sleeve device and screw locking system

Abstract

The utility model relates to the technical field of automatic assembly, in particular to a sleeve device and a screw locking system. The sleeve device comprises a sleeve body and an adsorption part, the adsorption part is arranged at one end of the sleeve body in the axial direction, an adsorption surface is arranged at one end, away from the sleeve body, of the adsorption part, an included angle is formed between the adsorption surface and a first direction, and the first direction is perpendicular to the axis of the sleeve body. When inclined locking is carried out, the adsorption part adsorbs the screw in an inclined mode so that the screw can be right opposite to the screw hole, the screw and the screw hole can be coaxial, tooth recognition is facilitated, the tooth recognition stability is ensured, meanwhile, the contact area of the screwdriver head and the screw groove is increased, the risk of tooth loosening is reduced, and the screw assembling efficiency is improved. According to the screw locking system provided by the utility model, by applying the sleeve device, the tooth recognizing stability can be ensured, the contact area between the screwdriver bit and the screw groove is increased, and the risk of screw loosening is reduced.

Description

Technical Field

[0001] This utility model relates to the field of automated assembly technology, and in particular to a sleeve device and a screw-locking system. Background Technology

[0002] Electronic products such as mobile phones, watches, or wristbands usually have buttons. These buttons can be used to adjust the volume, brightness, power on / off, etc. The buttons are usually assembled with the casing of the electronic product using screws. To improve the efficiency and automation of screw tightening, screw-locking systems are often used to assemble the screws with the casing of the electronic product.

[0003] The screws used in the aforementioned electronic products are all small-diameter screws, generally below 1.4mm. For tightening such tiny screws, the screw feeding method is usually suction-type. Therefore, a screw tightening system typically includes a bit and a socket device. The socket device is fitted around the outer circumference of the bit, and it can hold the screw in place, allowing the bit to tighten it further.

[0004] Since buttons are typically mounted on the side wall of electronic product housings, and there is spatial interference between the screw-locking system and the housing, existing screw-locking systems can only tighten the screws at a certain angle to the housing. When tightened at an angle, firstly, the screw and the screw hole are not aligned, affecting thread stability; secondly, the obstruction of the sleeve device reduces the contact area between the screw and the thread groove, making stripping and other problems more likely.

[0005] Therefore, there is an urgent need for a sleeve device and screw-locking system to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a sleeve device and a screw-locking system that can ensure the stability of the screw thread when tightened at an angle, increase the contact area between the screw head and the screw groove, and reduce the risk of stripping.

[0007] To achieve the above objectives, the following technical solution is provided:

[0008] Sleeve device, comprising:

[0009] cylindrical body;

[0010] An adsorption section is provided at one end of the cylinder along its axial direction. An adsorption surface is provided at the end of the adsorption section away from the cylinder. The adsorption surface is set at an angle to a first direction, which is perpendicular to the axis of the cylinder.

[0011] As an optional solution, the angle between the adsorption surface and the first direction is α, where the value of α is greater than or equal to 3° and less than or equal to 5°.

[0012] As an optional solution, the cylinder is provided with a limiting groove and / or a limiting protrusion.

[0013] As an optional solution, the sleeve device further includes:

[0014] The guide sleeve abuts against the inner wall of the cylinder, and the guide sleeve abuts against the abutting platform.

[0015] Alternatively, the abutment platform is annular and extends circumferentially along the cylinder.

[0016] As an option, the abutment platform includes multiple protrusions, which are spaced apart along the axial direction of the cylinder.

[0017] As an optional solution, the contact platform is integrally formed with the cylinder.

[0018] Alternatively, the cylinder may be made of metal.

[0019] And / or, the adsorption part is made of metal or plastic.

[0020] As an optional solution, a magnetic ring is embedded in the adsorption section.

[0021] The screw-locking system includes a drive unit, a screwdriver bit, a negative pressure device, and the aforementioned sleeve device. The screwdriver bit is disposed at the output end of the drive unit and located inside the sleeve device. The drive unit is capable of driving the screwdriver bit to rotate around its own axis. The negative pressure device is connected to the sleeve device.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] The sleeve device provided by this utility model includes a cylinder and an adsorption part. The adsorption part is located at one end of the cylinder along the axial direction, and an adsorption surface is provided at the end of the adsorption part away from the cylinder. The adsorption surface is set at an angle to the direction perpendicular to the axis of the cylinder. When the screw-locking system tilts and locks the screw, it can ensure the stability of the thread, increase the contact area between the head and the screw groove, and reduce the risk of stripping.

[0024] The screw-locking system provided by this utility model, by applying the above-mentioned sleeve device, can ensure the stability of thread locking, increase the contact area between the large head and the screw groove, and reduce the risk of stripping. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the sleeve device provided in an embodiment of the present utility model;

[0027] Figure 2 A cross-sectional view of the sleeve device provided in an embodiment of this utility model.

[0028] Figure label:

[0029] 100. Sleeve device;

[0030] 10. Cylinder body; 11. Limiting groove; 12. Abutment platform;

[0031] 20. Adsorption section; 21. Adsorption surface. Detailed Implementation

[0032] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0033] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0034] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0038] This embodiment provides a screw fastening system for automated screw fastening. The screw fastening system includes a drive unit, a screwdriver bit, a negative pressure device, and a sleeve device 100. The screwdriver bit is located at the output end of the drive unit and inside the sleeve device 100. The drive unit can drive the screwdriver bit to rotate around its own axis. The negative pressure device is connected to the sleeve device 100. During operation, the negative pressure device provides a vacuum or negative pressure environment inside the sleeve to attract the screw. The drive unit drives the screwdriver bit to rotate, thereby selecting the screw into the screw hole and achieving screw fastening.

[0039] When fastening buttons on electronic products such as mobile phones, watches, or wristbands, the buttons are usually mounted on the side wall of the product's casing, and there is spatial interference between the screw-fastening system and the casing. Therefore, existing screw-fastening systems can only tighten the screws at a certain angle to the casing. During this angled tightening, firstly, the screw and the screw hole are not aligned, affecting thread stability; secondly, the obstruction of the sleeve device 100 between the screw bit and the screw groove reduces the contact area, making stripping and other problems more likely.

[0040] To solve the above problems, such as Figure 1 and Figure 2 As shown, the sleeve device 100 provided in this embodiment includes a cylinder 10 and an adsorption part 20. The adsorption part 20 is disposed at one end of the cylinder 10 along the axial direction. An adsorption surface 21 is disposed at the end of the adsorption part 20 away from the cylinder 10. The adsorption surface 21 is set at an angle to a first direction, which is perpendicular to the axis of the cylinder 10. By setting the adsorption surface 21 at an angle to the direction perpendicular to the axis of the cylinder 10, when the screw is tilted for fastening, the adsorption part 20 tilts to adsorb the screw so that the screw and the screw hole are aligned. This makes the screw and the screw hole coaxial, which is beneficial for thread recognition and ensures the stability of thread recognition. At the same time, it increases the contact area between the bit and the screw groove, reduces the risk of stripping, and improves the screw assembly efficiency.

[0041] Optionally, the angle between the adsorption surface 21 and the first direction is α, where the value of α is greater than or equal to 3° and less than or equal to 5°, to ensure that the screw can be aligned with the thread when tilted and locked.

[0042] Optionally, the cylinder 10 is provided with a limiting groove 11 and / or a limiting protrusion. The screw-locking system also includes a fixing device that can cooperate with the limiting groove 11 and the limiting protrusion to prevent the sleeve device 100 from moving around its own axis, so as to ensure that the adsorption surface 21 is always consistent with the tilt direction of the screw hole, which facilitates the screw-locking of the screw by the bit.

[0043] Optionally, the sleeve device 100 may further include a guide sleeve (not shown in the figure), through which the bit passes and is guided.

[0044] Optionally, the inner wall of the cylinder 10 is provided with an abutment platform 12, and the guide sleeve abuts against the abutment platform 12.

[0045] In this embodiment, the abutment platform 12 is annular and extends circumferentially along the cylinder 10, which increases the contact area between the guide sleeve and the abutment platform 12, thereby improving the stability of the connection between the guide sleeve and the cylinder.

[0046] In other embodiments, the abutment platform 12 includes a plurality of protrusions, which are arranged at intervals along the axial direction of the cylinder 10, thereby increasing the contact area between the guide sleeve and the abutment platform 12 and improving the stability of the connection between the guide sleeve and the cylinder 10.

[0047] Optionally, the abutment platform 12 and the cylinder 10 are integrally formed. The integrally formed cylinder 10 and abutment platform 12 save on the connection structure, simplify the structure of the cylinder 10, and are easy to process.

[0048] Optionally, the cylinder 10 is made of metal; and / or, the adsorption part 20 is made of metal or plastic. A cylinder 10 made of metal has high structural strength, preventing deformation during use and extending its service life. An adsorption part 20 made of metal also has high structural strength, preventing deformation or reducing wear during use and extending its service life. An adsorption part 20 made of plastic reduces wear on the screw head during use, preventing discoloration and other defects.

[0049] Alternatively, the adsorption section 20 may be made of POM (Polyoxymethylene).

[0050] Optionally, the adsorption part 20 is embedded with a magnetic ring. When the negative pressure device malfunctions and stops working, the magnetic ring can make the adsorption part 20 adsorb the screw, thereby ensuring the continuity of the locking operation.

[0051] Note that in the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0052] The above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A sleeve device, characterized in that, include: Cylinder (10); An adsorption section (20) is provided at one end of the cylinder (10) along the axial direction. An adsorption surface (21) is provided at the end of the adsorption section (20) away from the cylinder (10). The adsorption surface (21) is set at an angle to a first direction, which is perpendicular to the axis of the cylinder (10).

2. The sleeve device according to claim 1, characterized in that, The angle between the adsorption surface (21) and the first direction is α, where the value of α is greater than or equal to 3° and less than or equal to 5°.

3. The sleeve device according to claim 1, characterized in that, The cylinder (10) is provided with a limiting groove (11) and / or a limiting protrusion.

4. The sleeve device according to any one of claims 1-3, characterized in that, The sleeve device further includes: The guide sleeve has an abutment platform (12) on the inner wall of the cylinder (10), and the guide sleeve abuts against the abutment platform (12).

5. The sleeve device according to claim 4, characterized in that, The abutment platform (12) is annular and extends circumferentially along the cylinder (10).

6. The sleeve device according to claim 4, characterized in that, The abutment platform (12) includes a plurality of protrusions, which are arranged at intervals along the axial direction of the cylinder (10).

7. The sleeve device according to claim 4, characterized in that, The abutment platform (12) is integrally formed with the cylinder (10).

8. The sleeve device according to any one of claims 1-3, characterized in that, The cylinder (10) is made of metal material; And / or, the adsorption part (20) is made of metal or plastic.

9. The sleeve device according to any one of claims 1-3, characterized in that, The adsorption part (20) is embedded with a magnetic ring.

10. A screw-locking system, characterized in that, The device includes a drive unit, a bit, a negative pressure device, and a sleeve device as described in any one of claims 1-9. The bit is disposed at the output end of the drive unit and located inside the sleeve device. The drive unit is capable of driving the bit to rotate about its own axis. The negative pressure device is connected to the sleeve device.

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