A fastener facilitating expansion limiting

Abstract

This utility model relates to the field of fastener technology and discloses a fastener for easy expansion and limiting, including a fastening component and a sealing component. The main body of the fastening component includes an expansion sleeve and a fixing seat. The expansion sleeve has an expansion groove on its outer side and a limiting barb on its outer side. In use, the fixing seat carrying the expansion sleeve is inserted into a groove, while the fixing pin on the right side of the fixing seat is driven into the wall outside the groove. Then, the threaded head drives the threaded rod to engage with the expansion sleeve threadedly. The threaded rod compresses the trapezoidal expansion sleeve, allowing it to expand through the expansion groove inside the groove. The limiting barb on the outer side of the expansion sleeve contacts the groove, fixing the expansion sleeve inside the groove. Simultaneously, the fixing seat prevents the expansion sleeve from extending too far into the groove, preventing the expansion sleeve and fixing seat from internally expanding and contracting for limiting.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, specifically to a fastener that facilitates expansion and limiting. Background Technology

[0002] In fields such as construction, decoration, and electromechanical installation, it is often necessary to firmly fix objects to brittle substrates such as concrete. Since the substrate itself cannot be machined into threads with strong toughness like metal, traditional threaded connection methods cannot be directly applied. The basic principle of expansion fasteners is to use mechanical expansion or friction to expand in the pre-drilled holes in the substrate, thereby generating huge clamping force and friction force to achieve reliable anchoring.

[0003] Common expansion joints expand radially within the hole, pressing tightly against the hole wall. They cannot be stretched outwards, but can be pushed inwards. This can affect subsequent fastening connections if the hole is too deep. Therefore, we propose a fastener with easy expansion and limiting to improve upon the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a fastener that facilitates expansion and limiting, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fastener that facilitates expansion and limiting, comprising a fastening component and a sealing component. The main body of the fastening component includes an expansion sleeve and a fixing seat. An expansion groove is provided on the outside of the expansion sleeve, and a limiting barb is provided on the outside of the expansion sleeve. A fixing seat is connected to the left side of the expansion sleeve, and a fixing nail is installed on the right side of the fixing seat. A threaded rod is inserted inside the expansion sleeve.

[0006] As a further technical solution of this utility model, the expansion groove is opened on the outside of the expansion sleeve to divide the bottom of the expansion sleeve into four parts, the limiting barbs are evenly arranged on the outside of the expansion sleeve, and the fixing seat carries the fixing nail to connect with the expansion sleeve.

[0007] As a further technical solution of this utility model, the threaded rod is threadedly engaged with the inside of the expansion sleeve, and the threaded rod drives the expansion sleeve to expand and unfold through the expansion groove.

[0008] As a further technical solution of this utility model, the sealing assembly includes a threaded rod and a threaded head. The threaded head is connected to the left side of the threaded rod, and an injection port is opened on the left side of the threaded head. An outlet hole is opened on the outside of the threaded rod, and a guide groove is provided inside the threaded rod. An anti-theft component is sleeved on the outside of the threaded head.

[0009] As a further technical solution of this utility model, the injection port on the left side of the threaded head is connected through the guide groove inside the threaded rod, and the guide groove inside the threaded rod is connected to the outlet hole outside the threaded rod.

[0010] As a further technical solution of this utility model, the threaded rod is connected to the interior of the expansion sleeve through an external outlet hole.

[0011] As a further technical solution of this utility model, the anti-theft component includes an anti-theft cover, and the anti-theft cover is provided with an anti-detachment block inside.

[0012] As a further technical solution of this utility model, the anti-detachment blocks are arranged at equal intervals inside the anti-theft cover, and the anti-theft cover covers the outside of the threaded head, and the anti-detachment blocks inside the anti-theft cover engage the threaded head.

[0013] Compared with the prior art, the beneficial effects of this utility model are: this kind of fastener that is easy to expand and limit not only realizes the function of limiting expansion and the function of connection sealing, but also realizes the function of anti-theft; In this utility model, the fixed base carrying the expansion sleeve is inserted into the groove, and the fixing nail on the right side of the fixed base is nailed into the wall outside the groove. Then, the threaded head drives the threaded rod to engage with the expansion sleeve thread. The threaded rod squeezes the trapezoidal expansion sleeve, allowing the expansion sleeve to expand through the expansion groove inside the groove. The limiting barbs on the outside of the expansion sleeve contact the groove, fixing the expansion sleeve inside the groove. At the same time, the fixed base can prevent the expansion sleeve from going too deep into the groove, so that the expansion sleeve and the fixed base will not expand and limit internally. This utility model is advantageous in that when in use, the threaded rod at the bottom of the wrench thread head engages with the inside of the expansion sleeve. The threaded rod is inserted into the inside of the expansion sleeve, and then glue can be injected into the guide groove through the injection port on the left side of the thread head. The glue inside the guide groove inside the threaded rod is injected into the inside of the expansion sleeve through the outlet hole, which increases the sealing of the connection between the threaded rod and the inside of the expansion sleeve. This utility model is beneficial in that when in use, the anti-theft cover is placed over the outside of the threaded head. By impacting the anti-theft cover, the anti-loosening block inside the cover engages with the outside of the threaded head, thus fixing the anti-theft component to the outside of the threaded head. This makes it difficult for the threaded rod to be unscrewed from inside the expansion sleeve, increasing the safety of the fastener after use. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of the present utility model; Figure 2 This is a frontal cross-sectional view of the present invention. Figure 3 This is a three-dimensional structural diagram of the threaded head and threaded rod of this utility model; Figure 4 This is a schematic diagram of the cross-sectional structure of the threaded head and threaded rod of this utility model; Figure 5 This is a schematic diagram of the cross-sectional structure of the anti-theft cover and threaded head of this utility model; Figure 6 This is a side view of the anti-theft cover of this utility model.

[0015] In the diagram: 1. Anti-theft component; 11. Anti-theft cover; 12. Anti-detachment block; 2. Sealing component; 21. Threaded head; 22. Threaded rod; 23. Outlet hole; 24. Inlet; 3. Fastening component; 25. Guide channel; 31. Fixing base; 32. Fixing nail; 33. Expansion sleeve; 34. Expansion groove; 35. Limiting barb. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-6 An embodiment of this utility model is provided: a fastener that facilitates expansion and limiting, including a fastening component 3 and a sealing component 2. The main body of the fastening component 3 includes an expansion sleeve 33 and a fixing seat 31. An expansion groove 34 is provided on the outside of the expansion sleeve 33. A limiting barb 35 is provided on the outside of the expansion sleeve 33. The left side of the expansion sleeve 33 is connected to the fixing seat 31. A fixing nail 32 is installed on the right side of the fixing seat 31. A threaded rod 22 is inserted inside the expansion sleeve 33. The expansion groove 34 is formed on the outside of the expansion sleeve 33, dividing the bottom of the expansion sleeve 33 into four parts. The limiting barbs 35 are evenly arranged on the outside of the expansion sleeve 33. The fixing seat 31 carries the fixing nail 32 and connects to the expansion sleeve 33. The threaded rod 22 is threadedly engaged with the inside of the expansion sleeve 33. The threaded rod 22 drives the expansion sleeve 33 to expand and unfold through the expansion groove 34. Specifically, such as Figure 1 and Figure 2As shown, in use, the fixed base 31 carrying the expansion sleeve 33 is inserted into the groove, and the fixing nail 32 on the right side of the fixed base 31 is nailed into the wall outside the groove. Then, the threaded head 21 drives the threaded rod 22 to engage with the expansion sleeve 33. The threaded rod 22 squeezes the trapezoidal expansion sleeve 33, allowing the expansion sleeve 33 to unfold inside the groove through the expansion groove 34. The limiting barbs 35 on the outside of the expansion sleeve 33 come into contact with the groove, fixing the expansion sleeve 33 inside the groove. At the same time, the fixed base 31 can prevent the expansion sleeve 33 from going deep into the groove, so that the expansion sleeve 33 and the fixed base 31 will not expand and limit internally.

[0018] The sealing assembly 2 includes a threaded rod 22 and a threaded head 21. The threaded head 21 is connected to the left side of the threaded rod 22. An injection port 24 is opened on the left side of the threaded head 21. An outlet hole 23 is opened on the outside of the threaded rod 22. A guide groove 25 is provided inside the threaded rod 22. An anti-theft assembly 1 is sleeved on the outside of the threaded head 21. The injection port 24 on the left side of the threaded head 21 is connected through the guide groove 25 inside the threaded rod 22. The guide groove 25 inside the threaded rod 22 is connected to the outlet hole 23 outside the threaded rod 22. The threaded rod 22 is connected to the inside of the expansion sleeve 33 through the outlet hole 23 outside the threaded rod 22. Specifically, such as Figure 1 , Figure 3 and Figure 4 As shown, this utility model is advantageous in use when the threaded rod 22 at the bottom of the wrench threaded head 21 engages with the inside of the expansion sleeve 33. The threaded rod 22 is inserted into the inside of the expansion sleeve 33, and then glue can be injected into the guide groove 25 through the injection port 24 on the left side of the threaded head 21. The glue inside the guide groove 25 inside the threaded rod 22 is injected into the inside of the expansion sleeve 33 through the outlet hole 23, which increases the sealing of the connection between the threaded rod 22 and the inside of the expansion sleeve 33.

[0019] The anti-theft component 1 includes an anti-theft cover 11, and an anti-disengagement block 12 is provided inside the anti-theft cover 11; Anti-detachment blocks 12 are evenly spaced inside the anti-theft cover 11, which covers the outside of the threaded head 21. The anti-detachment blocks 12 inside the anti-theft cover 11 engage the threaded head 21. Specifically, such as Figure 1 , Figure 5 and Figure 6 As shown, this utility model is beneficial in use by covering the outside of the threaded head 21 with the anti-theft cover 11. By impacting the anti-theft cover 11, the anti-disengagement block 12 inside the anti-theft cover 11 is engaged with the outside of the threaded head 21, thus fixing the anti-theft component 1 to the outside of the threaded head 21. This makes it difficult for the threaded rod 22 to be unscrewed from the inside of the expansion sleeve 33, thereby increasing the safety of the fastener after use.

[0020] Working principle: In use, the fixing base 31 carrying the expansion sleeve 33 is inserted into the groove, and the fixing nail 32 on the right side of the fixing base 31 is driven into the wall outside the groove. Then, the threaded head 21 drives the threaded rod 22 to engage with the expansion sleeve 33. The threaded rod 22 compresses the trapezoidal expansion sleeve 33, allowing the expansion sleeve 33 to unfold inside the groove through the expansion groove 34. The limiting barbs 35 on the outside of the expansion sleeve 33 come into contact with the groove, fixing the expansion sleeve 33 inside the groove. Then, the threaded rod 22 at the bottom of the wrench threaded head 21 engages with the inside of the expansion sleeve 33, thus fixing the expansion sleeve 33 inside the groove. The rod 22 is inserted into the expansion sleeve 33. Then, glue can be injected into the guide groove 25 through the injection port 24 on the left side of the threaded head 21. The glue inside the guide groove 25 inside the threaded rod 22 is injected into the expansion sleeve 33 through the outlet hole 23, increasing the sealing of the connection between the threaded rod 22 and the expansion sleeve 33. Finally, the anti-theft cover 11 is placed over the threaded head 21. By impacting the anti-theft cover 11, the anti-disengagement block 12 inside the anti-theft cover 11 is engaged with the outside of the threaded head 21, fixing the anti-theft component 1 to the outside of the threaded head 21, making it difficult for the threaded rod 22 to be unscrewed from the expansion sleeve 33.

[0021] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A fastener for easy expansion and limiting, comprising a fastening component (3) and a sealing component (2), characterized in that: The fastening assembly (3) includes an expansion sleeve (33) and a fixing seat (31). An expansion groove (34) is provided on the outside of the expansion sleeve (33). A limiting barb (35) is provided on the outside of the expansion sleeve (33). The fixing seat (31) is connected to the left side of the expansion sleeve (33). A fixing nail (32) is installed on the right side of the fixing seat (31). A threaded rod (22) is inserted inside the expansion sleeve (33).

2. The fastener for easy expansion and limiting according to claim 1, characterized in that: The expansion groove (34) is opened on the outside of the expansion sleeve (33) to divide the bottom of the expansion sleeve (33) into four parts. The limiting barbs (35) are evenly arranged on the outside of the expansion sleeve (33). The fixing seat (31) carries the fixing nail (32) and is connected to the expansion sleeve (33).

3. The fastener for easy expansion and limiting according to claim 1, characterized in that: The threaded rod (22) engages with the inside of the expansion sleeve (33) through a threaded connection, and the threaded rod (22) drives the expansion sleeve (33) to expand and unfold through the expansion groove (34).

4. A fastener for easy expansion and limiting according to claim 1, characterized in that: The sealing assembly (2) includes a threaded rod (22) and a threaded head (21). The threaded rod (22) is connected to the left side of the threaded head (21). An injection port (24) is opened on the left side of the threaded head (21). An outlet hole (23) is opened on the outside of the threaded rod (22). A guide groove (25) is provided inside the threaded rod (22). An anti-theft assembly (1) is sleeved on the outside of the threaded head (21).

5. A fastener for easy expansion limiting according to claim 4, characterized in that: The injection port (24) on the left side of the threaded head (21) is connected through the guide groove (25) inside the threaded rod (22), and the guide groove (25) inside the threaded rod (22) is connected to the outlet hole (23) outside the threaded rod (22).

6. A fastener for easy expansion limiting according to claim 4, characterized in that: The threaded rod (22) is connected to the interior of the expansion sleeve (33) through the external outlet hole (23).

7. A fastener for easy expansion limiting according to claim 4, characterized in that: The anti-theft component (1) includes an anti-theft cover (11), and the anti-theft cover (11) is provided with an anti-detachment block (12) inside.

8. A fastener for easy expansion limiting according to claim 7, characterized in that: The anti-detachment blocks (12) are evenly spaced inside the anti-theft cover (11), which covers the outside of the threaded head (21). The anti-detachment blocks (12) inside the anti-theft cover (11) engage the threaded head (21).

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