Detachable sectional type expansion bolt

Abstract

The utility model provides a detachable sectional type expansion bolt. The detachable sectional type expansion bolt comprises a sleeve, an expansion bolt body and a working bolt body. The sleeve is cylindrical, a threaded channel and an expansion space are arranged in the sleeve, a sleeve opening is formed in the outer end of the threaded channel, the inner end of the threaded channel is communicated with the inner end of the expansion space, and the expansion space is gradually expanded from inside to outside to be in a flaring shape. The expansion bolt comprises an expansion bolt nut and an expansion bolt screw, and the expansion bolt nut is gradually narrowed from outside to inside and is matched with the expansion inclination of the expansion space. The expansion bolt is screwed into the sleeve through the expansion space, an expansion bolt screw is in threaded connection with the threaded channel, and an expansion bolt nut is contained in the expansion space. The working bolt comprises a working bolt nut and a working bolt screw, the working bolt screw is screwed into the sleeve through the sleeve opening and is in threaded connection with the threaded channel, and the working bolt nut is located on the outer side of the sleeve opening. The detachable sectional type expansion bolt can be installed at a time and used at any time.

Description

Technical Field

[0001] This application relates to the field of equipment installation tools, and more specifically, to a detachable segmented expansion bolt. Background Technology

[0002] Removable expansion bolts are mostly used for the installation and fixing of non-permanent equipment. Existing removable expansion bolts are mostly one-piece designs, consisting of the bolt body and the expansion element. During the tightening process, the expansion element expands and deforms within the mounting hole, preventing detachment and achieving a fixing effect. When the equipment is disassembled, the bolt body is removed. When reinstalling in the same location, the effect is poor because the expansion element and the pre-drilled hole have already deformed due to stress. Furthermore, after removing the bolt body, the mounting hole on the expansion element is not sealed. Over time, the hole will become clogged with dust and debris, requiring re-drilling when reinstalling in the same location, which is both time-consuming and labor-intensive. If the bolt body is not removed, it will affect the normal use of the relevant area and is unsightly. Utility Model Content

[0003] The purpose of this application is to provide a detachable segmented expansion bolt that can be freely removed from the installation equipment without affecting the fastening strength of the expansion bolt after the equipment is removed, thus enabling one-time installation and immediate use.

[0004] The embodiments of this application are implemented as follows:

[0005] A detachable segmented expansion bolt includes a sleeve, an expansion bolt, and a working bolt.

[0006] The casing is cylindrical, with a threaded channel and an expansion space inside. The outer end of the threaded channel is the casing opening, and the inner end of the threaded channel is connected to the inner end of the expansion space. The expansion space gradually expands from the inside to the outside, forming a flared shape.

[0007] An expansion bolt consists of an expansion bolt nut and an expansion bolt shank. The expansion bolt nut gradually narrows from the outside in and is adapted to the expansion slope of the expansion space. The height of the expansion bolt nut is less than the height of the expansion space. The expansion bolt is screwed into the sleeve through the expansion space. The expansion bolt shank is threadedly connected to the threaded channel, and the expansion bolt nut is housed within the expansion space.

[0008] The working bolt includes a working bolt nut and a working bolt shank. The working bolt shank is screwed into the sleeve through the sleeve opening and is threadedly connected to the threaded channel. The working bolt nut is located outside the sleeve opening.

[0009] Both the working bolt nut and the expansion bolt nut are equipped with an operating interface.

[0010] Furthermore, the detachable segmented expansion bolt also includes a dust cap, which is detachably installed on the sleeve to cover the sleeve opening.

[0011] Furthermore, the dust cap is made of rubber.

[0012] Furthermore, a groove is provided on the end wall of the sleeve opening, and a dust cap with a groove is used to connect the sleeve.

[0013] Furthermore, the detachable segmented expansion bolt also includes an auxiliary mounting nut, which is detachably mounted on the sleeve. The auxiliary mounting nut is located at one end of the sleeve opening and its central hole communicates with the sleeve opening.

[0014] Furthermore, a groove is provided on the end wall of the sleeve opening, and an auxiliary installation nut is provided with an auxiliary installation nut stud that matches the groove for connecting the sleeve.

[0015] Furthermore, barbs are provided on the outer edge of the sleeve, with the barbs inclined toward the direction of the sleeve opening.

[0016] Furthermore, the sleeve is made of metal or plastic, and deformation grooves are provided on the side wall of the expansion space.

[0017] Furthermore, the operating interface is a cross-shaped slot, a flat slot, or an internal hexagonal hole.

[0018] Compared with the prior art, the embodiments of this application have at least the following advantages or beneficial effects:

[0019] 1. During installation, the detachable segmented expansion bolt of this utility model allows the bolt to move within the sleeve by rotating it. The fit between the bolt nut and the expansion space causes the sleeve to expand within the mounting hole, achieving a secure fixation. During installation, it is fixed to the equipment using the working bolt. During disassembly, simply unscrewing the working bolt restores the sleeve opening. Compared to traditional one-piece detachable expansion bolts, the segmented and detachable design of this utility model solves the problem of poor reinstallation results due to deformation of the expansion component. It can be reused multiple times, improving ease of use and economy.

[0020] 2. A dust cap is added and can be detachably installed on the sleeve to cover the sleeve opening. It effectively prevents dust and debris from entering the inside of the sleeve, avoids clogging the threaded channel, and ensures that the threaded channel can be used normally when reinstallation is required, without the need to re-drill holes, saving time and effort.

[0021] 3. During installation, the auxiliary installation nut can serve as a leverage point to facilitate the fixing of the sleeve, prevent the sleeve from loosening, and ensure the stable function of the expansion bolt. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a cross-sectional view of the sleeve in an embodiment of this application;

[0024] Figure 2 These are cross-sectional and top views of the expansion bolts in the embodiments of this application;

[0025] Figure 3 These are cross-sectional and top views of the working bolts in the embodiments of this application;

[0026] Figure 4 These are bottom and front views of the dust cap in the embodiments of this application;

[0027] Figure 5 These are bottom and front views of the auxiliary installation nut in the embodiments of this application;

[0028] Figure 6 A cross-sectional view of a detachable segmented expansion bolt provided in an embodiment of this application;

[0029] Figure 7 The usage state of the detachable segmented expansion bolt provided in the embodiments of this application. Figure 1 ;

[0030] Figure 8 The usage state of the detachable segmented expansion bolt provided in the embodiments of this application. Figure 2 ;

[0031] Figure 9 The usage state of the detachable segmented expansion bolt provided in the embodiments of this application. Figure 3 .

[0032] Icons: 1-Sleeve, 11-Threaded channel, 12-Expansion space, 13-Sleeve opening, 14-Slot, 15-Barb, 16-Deformation groove, 2-Expansion bolt, 21-Expansion bolt nut, 22-Expansion bolt shank, 3-Working bolt, 31-Working bolt nut, 32-Working bolt shank, 4-Dust cap, 41-Dust cap retaining post, 5-Auxiliary installation nut, 51-Auxiliary installation nut retaining post, 62-Operating interface, 71-Equipment base, 72-Gasket, 73-Mounting plane. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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 some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] In the description of the embodiments of this application, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they 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 on this application. In addition, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] In the description of the embodiments of this application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] Example

[0039] Please refer to Figures 1-6 This embodiment provides a detachable segmented expansion bolt, which mainly consists of a sleeve 1, an expansion bolt 2, and a working bolt 3.

[0040] The sleeve 1 is a standard cylindrical shape and is made of engineering plastic, which has the advantages of low cost and light weight. During installation, the relatively soft plastic sleeve 1 is more prone to deformation during expansion. The sleeve 1 has a carefully designed threaded channel 11 and an expansion space 12. The outer end of the threaded channel 11 is the sleeve opening 13, and the inner end connects to the inner end of the expansion space 12. The expansion space 12 gradually expands from the inside out, forming a flared shape. Deformation grooves 16 are also provided on the sidewall of the expansion space 12. These deformation grooves 16 allow the sleeve 1 to deform more easily during expansion, better controlling the degree and uniformity of expansion. Furthermore, barbs 15 are provided on the outer edge of the sleeve 1, inclined towards the sleeve opening 13. During installation, the barbs 15 can effectively embed into the wall of the mounting hole, increasing the friction between the sleeve 1 and the mounting hole and preventing the sleeve 1 from loosening.

[0041] The expansion bolt 2 consists of an expansion bolt nut 21 and an expansion bolt shank 22. The expansion bolt nut 21 has a specially designed shape, gradually narrowing from the outside to the inside, and its expansion slope perfectly matches the expansion space 12. Furthermore, the height of the nut is less than the height of the expansion space 12, ensuring that the expansion bolt nut 21 can be easily accommodated within the expansion space 12. The expansion bolt shank 22 is threadedly connected to the threaded channel 11 of the sleeve 1, allowing it to move within the sleeve 1 by rotating the expansion bolt 2.

[0042] The working bolt 3 includes a working bolt nut 31 and a working bolt shank 32. The working bolt shank 32 is screwed into the sleeve 1 through the sleeve opening 13 and tightly threaded into the threaded channel 11. The working bolt nut 31 is located outside the sleeve opening 13. For ease of operation, the working bolt nut 31 is provided with a cross-shaped groove, which can be installed and removed using a common Phillips head screwdriver (manual or electric). The expansion bolt nut 21 is provided with an internal hexagonal hole, which can be easily installed and removed using a common internal hexagonal wrench.

[0043] In addition, this embodiment is also equipped with a dust cover 4 and an auxiliary installation nut 5. The dust cover 4 is made of rubber and utilizes the good flexibility and sealing properties of rubber to be detachably installed on the sleeve 1. It is used to cover the sleeve opening 13, effectively preventing dust and debris from entering the sleeve 1 and avoiding blockage of the threaded channel 11. The auxiliary installation nut 5 is detachably installed at one end of the sleeve opening 13, and its central hole communicates with the sleeve opening 13. During installation, the auxiliary installation nut 5 can serve as a leverage point to facilitate the fixing of the sleeve 1. A groove 14 is provided on the end wall of the sleeve opening 13. The dust cover 4 and the auxiliary installation nut 5 are respectively provided with dust cover locking posts 41 and auxiliary installation nut locking posts 51 that are adapted to the groove 14. Through the cooperation of the locking posts and the groove 14, a reliable connection with the sleeve 1 is achieved, and installation and disassembly are very convenient.

[0044] In actual installation, such as Figure 7 As shown, first, insert the sleeve 1 with the expansion bolt 2 installed into the pre-drilled mounting hole on the mounting plane 73. At this time, the expansion bolt 2 is flush with the bottom of the sleeve 1. Then, using an Allen wrench engaged with the Allen socket on the expansion bolt nut 21, rotate the expansion bolt 2 towards the sleeve opening 13. The expansion bolt nut 21 gradually moves deeper into the expansion space 12. Due to the special fit between the expansion bolt nut 21 and the expansion space 12, the expansion bolt nut 21 pushes the expansion space 12 of the sleeve 1 outward, causing the sleeve 1 to tightly press against the mounting hole wall, achieving a firm fixation. To prevent the sleeve from loosening during the rotation of the expansion bolt 2, an auxiliary mounting nut 5 can be installed depending on the actual working conditions. Fixing the auxiliary mounting nut 5 with a wrench will stabilize the sleeve 1. Figure 8 As shown, after the sleeve 1 is installed stably, remove the auxiliary installation nut 5, place the equipment and gasket 72, and then screw the working bolt 32 through the sleeve opening 13 after passing the gasket 72 and the equipment base 71, connecting it with the threaded channel 11 to complete the equipment installation. For disassembly, simply unscrew the working bolt 3. Because the expansion bolt 2 is reasonably designed with segmented, detachable components, it solves the problem of poor reinstallation due to deformation of the expansion components in traditional one-piece detachable expansion bolts, allowing for multiple reuses. Figure 9 As shown, the dust cap 4 effectively prevents dust and debris from entering, avoids the hassle of re-drilling holes, and greatly improves the convenience and economy of use.

[0045] In other embodiments of this utility model, high-strength metal can be selected as the material to ensure sufficient strength and stability during use. Regarding the operating interface 62, the working bolt nut 31 and expansion bolt nut 21 can also be configured with a cross-shaped groove, a slotted groove, or an internal hexagonal hole.

[0046] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A detachable segmented expansion bolt, characterized in that, Includes a sleeve (1), an expansion bolt (2), and a working bolt (3); The sleeve (1) is cylindrical. The sleeve (1) is provided with a threaded channel (11) and an expansion space (12) inside. The outer end of the threaded channel (11) is the sleeve opening (13). The inner end of the threaded channel (11) is connected to the inner end of the expansion space (12). The expansion space (12) gradually expands from the inside to the outside to form a flared shape. The expansion bolt (2) includes an expansion bolt nut (21) and an expansion bolt shank (22). The expansion bolt nut (21) gradually narrows from the outside to the inside and is adapted to the expansion slope of the expansion space (12). The height of the expansion bolt nut (21) is less than the height of the expansion space (12). The expansion bolt (2) is screwed into the sleeve (1) through the expansion space (12). The expansion bolt shank (22) is threadedly connected to the threaded channel (11). The expansion bolt nut (21) is housed in the expansion space (12). The working bolt (3) includes a working bolt nut (31) and a working bolt shank (32). The working bolt shank (32) is screwed into the sleeve (1) through the sleeve opening (13) and threadedly connected to the threaded channel (11). The working bolt nut (31) is located outside the sleeve opening (13). Both the working bolt nut (31) and the expansion bolt nut (21) are provided with an operating interface (62).

2. The detachable segmented expansion bolt according to claim 1, characterized in that, It also includes a dust cap (4), which is detachably installed on the sleeve (1) to cover the sleeve opening (13).

3. The detachable segmented expansion bolt according to claim 2, characterized in that, The dust cap (4) is made of rubber.

4. The detachable segmented expansion bolt according to claim 3, characterized in that, The sleeve (1) has a slot (14) on the end wall of the sleeve opening (13), and the dust cap (4) has a dust cap post (41) that is adapted to the slot (14) for connecting the sleeve (1).

5. The detachable segmented expansion bolt according to claim 2, characterized in that, It also includes an auxiliary mounting nut (5), which is detachably mounted on the sleeve (1). The auxiliary mounting nut (5) is located at one end of the sleeve opening (13) and its central hole is connected to the sleeve opening (13).

6. The detachable segmented expansion bolt according to claim 5, characterized in that, The sleeve (1) has a slot (14) on the end wall of the sleeve opening (13), and the dust cap (4) or auxiliary mounting nut (5) is provided with an auxiliary mounting nut post (51) that is adapted to the slot (14) for connecting the sleeve (1).

7. The detachable segmented expansion bolt according to claim 1, characterized in that, The outer edge of the sleeve (1) is provided with barbs (15), which are inclined toward the opening (13) of the sleeve.

8. The detachable segmented expansion bolt according to claim 1, characterized in that, The sleeve (1) is made of metal or plastic, and the sleeve (1) has a deformation groove (16) on the side wall of the expansion space (12).

9. The detachable segmented expansion bolt according to claim 1, characterized in that, The operation interface (62) is a cross slot, a slot, or an internal hexagonal hole.

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