High-strength embedded bolt with adhesive

Abstract

The utility model discloses a kind of high-strength embedded bolts of adhesive type, the first circular table part is provided at the end away from the inside hexagonal cylindrical head of screw shaft, and telescopic setting is provided with conical cover on circular table part, and the first capsule with adhesive is arranged in conical cover;Second circular table part is arranged on the end face of inside hexagonal cylindrical head close to screw shaft, and conical sleeve is sleeved on screw shaft, and the second capsule with adhesive is arranged in conical sleeve. Embedded bolt is usually passed through the through hole of a base material, and then is threadedly connected in countersunk head threaded hole of another base material, during the process of tightening embedded bolt, conical cover is acted on by the bottom of countersunk head threaded hole, so that conical cover and first circular table part break first capsule and make adhesive flow out, conical sleeve is acted on by the stepped surface of countersunk head threaded hole, so that conical sleeve and second circular table part break second capsule and make adhesive flow out, at this time, adhesive is solidified at screw thread by two places, to realize the effect of anti-loose.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, and in particular to a high-strength embedded bolt with adhesive. Background Technology

[0002] Embedded bolts are a type of fastener that achieves fixation by being pre-embedded or embedded inside a substrate, so that the bolt head or the entire bolt is flush with or below the surface of the substrate. Common embedded bolts include socket head cap screws.

[0003] With the widespread application and increasing maturity of adhesives in threaded fastening connections, the use of adhesives for anti-loosening in embedded bolts is becoming more and more common. By pre-applying adhesive to the threaded portion of the embedded bolt or dripping adhesive into the threaded hole of the substrate, the adhesive is squeezed out during the tightening process, filling the gap between the threads. After the adhesive solidifies, it achieves the anti-loosening effect.

[0004] However, existing adhesives are usually applied during the installation process, which makes the use of embedded bolts more complicated. Utility Model Content

[0005] The purpose of this invention is to provide a high-strength embedded bolt with adhesive. By combining a capsule with adhesive, the capsule is squeezed and ruptured during the threaded connection process, allowing the adhesive to solidify and achieve an anti-loosening effect.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a high-strength embedded bolt with adhesive, comprising an internal hexagonal cylindrical head and a threaded shaft disposed on the end of the internal hexagonal cylindrical head. A first frustum is provided at the end of the threaded shaft away from the internal hexagonal cylindrical head. A conical cap is telescopically disposed on the frustum. A first capsule containing adhesive is disposed inside the conical cap. During the tightening of the embedded bolt, the conical cap and the first frustum rupture the first capsule, causing the adhesive to flow out. A second frustum is provided on the end face of the internal hexagonal cylindrical head near the threaded shaft. A conical sleeve is fitted on the threaded shaft. A second capsule containing adhesive is disposed inside the conical sleeve. During the tightening of the embedded bolt, the conical sleeve and the second frustum rupture the second capsule, causing the adhesive to flow out.

[0007] By adopting the above technical solution, the embedded bolt typically passes through a through hole in one substrate and is threaded into a countersunk threaded hole in another substrate. During the tightening process of the embedded bolt, the conical cap, under the action of the bottom of the countersunk threaded hole, causes the conical cap and the first truncated cone to rupture the first capsule and allow the adhesive to flow out. The conical sleeve, under the action of the stepped surface of the countersunk threaded hole, causes the conical sleeve and the second truncated cone to rupture the second capsule and allow the adhesive to flow out. At this time, the adhesive solidifies at the threaded joint through the two locations, thereby achieving the function of preventing loosening and improving the strength of the connection.

[0008] A further feature of this invention is that: the conical sleeve is provided with a countersunk hole, and the frustum portion is provided with a corresponding insertion hole at the countersunk hole; a connector is provided between the conical sleeve and the frustum portion, which passes through the countersunk hole and is inserted and abutted into the insertion hole; the cross-section of the connector is "T"-shaped; the conical sleeve can extend and retract along the connector; during the process of the conical sleeve moving toward the first frustum portion to its limit state, the end of the connector is always located in the countersunk hole.

[0009] By adopting the above technical solution, a countersunk hole is provided on the conical sleeve, and a corresponding insertion hole is provided on the frustum portion. A connector is provided between the conical sleeve and the frustum portion, which passes through the countersunk hole and is inserted and pressed against the insertion hole, thereby realizing the telescopic setting of the conical cover and the frustum portion. At the same time, during the process of the conical sleeve moving towards the first frustum portion to the limit state, the end of the connector is located in the countersunk hole, thereby avoiding interference of the connector with the movement of the conical sleeve.

[0010] A further feature of this invention is that the conical cover has a plurality of first embedding grooves, and the first capsule has a plurality of first embedding grooves, each of which is partially embedded in the first embedding groove.

[0011] By adopting the above technical solution, a plurality of first embedding grooves are provided inside the conical cover, and a plurality of first capsules are provided and are partially embedded in the first embedding grooves respectively, thereby realizing the installation of the first capsules.

[0012] A further feature of this invention is that a first rubber sealing ring is provided on the periphery of the conical cover.

[0013] By adopting the above technical solution, when the first capsule is ruptured and the adhesive flows out, the first rubber sealing ring causes the adhesive to flow towards the direction close to the threaded shaft, so as to solidify at the thread and achieve the anti-loosening effect.

[0014] A further feature of this invention is that the conical sleeve is provided with a plurality of second embedding grooves, the second capsule is provided with a plurality of second capsules and is partially embedded in the second embedding grooves respectively, and the second capsules are bonded between the conical sleeve and the second frustum.

[0015] By adopting the above technical solution, a plurality of second embedding grooves are provided inside the conical sleeve, and a plurality of second capsules are provided and are partially embedded in the second embedding grooves respectively, thereby realizing the installation of the second capsules.

[0016] A further feature of this invention is that a second rubber sealing ring is provided on the end face edge of the conical sleeve near the second frustum portion. During the process of the conical sleeve and the second frustum portion rupturing the second capsule, the second rubber sealing ring is pressed between the conical sleeve and the internal hexagonal cylindrical head.

[0017] By adopting the above technical solution, during the process of the second capsule being squeezed out of the conical sleeve and the second truncated cone, the second rubber sealing ring is pressed between the conical sleeve and the inner hexagonal cylindrical head, so that the adhesive flows out downwards towards the connection between the threaded shaft and the conical sleeve, so as to solidify at the thread and achieve the anti-loosening effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is an exploded view of the structure of this utility model;

[0020] Figure 3 This is a cross-sectional view of the structure of this utility model after connecting two substrates (not fully tightened, the first capsule and the second capsule are squeezed separately).

[0021] Reference numerals: 1. Hexagonal socket head cap; 2. Threaded shaft; 2-1. First frustum; 2-2. Second frustum; 2-3. Insertion hole; 3. Conical cap; 3-1. Countersunk hole; 3-2. First insert groove; 3-3. First rubber sealing ring; 4. First capsule; 5. Conical sleeve; 5-1. Second insert groove; 5-2. Second rubber sealing ring; 6. Second capsule; 7. Connector. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings.

[0023] Example: A high-strength embedded bolt with adhesive, such as Figure 1 As shown, it includes an internal hexagonal cylindrical head 1 and a threaded shaft 2 disposed on the end of the internal hexagonal cylindrical head 1.

[0024] like Figure 1 and Figure 2 As shown, the threaded shaft 2 has a first frustum 2-1 at one end away from the internal hexagonal cylindrical head 1. A conical cover 3 is telescopically provided on the frustum. A first capsule 4 containing adhesive is provided inside the conical cover 3. During the tightening of the embedded bolt, the conical cover 3 and the first frustum 2-1 rupture the first capsule 4 and cause the adhesive to flow out.

[0025] like Figure 2 and Figure 3 As shown, the conical sleeve 5 has a countersunk hole 3-1, and the frustum portion has a corresponding insertion hole 2-3 at the countersunk hole 3-1. A connector 7, made of plastic, passes through the countersunk hole 3-1 and is inserted into the insertion hole 2-3 between the conical sleeve 5 and the frustum portion. The connector 7 has a "T"-shaped cross-section. The conical sleeve 5 can extend and retract along the connector 7. During the movement of the conical sleeve 5 toward the first frustum portion 2-1 to its limit, the end of the connector 7 is always located within the countersunk hole 3-1. The conical cover 3 has multiple first embedding grooves 3-2, and the first capsule 4 has multiple first embedding grooves 3-2, each partially embedded within one of them. A first rubber sealing ring 3-3 is also provided on the periphery of the conical cover 3.

[0026] like Figure 1 and Figure 2 As shown, a second frustum 2-2 is provided on the end face of the internal hexagonal cylindrical head 1 near the threaded shaft 2. A conical sleeve 5 is fitted onto the threaded shaft 2, and a second capsule 6 containing adhesive is provided inside the conical sleeve 5. During the tightening of the embedded bolt, the conical sleeve 5 and the second frustum 2-2 rupture the second capsule 6, causing the adhesive to flow out. Furthermore, the conical sleeve 5 has multiple second embedding grooves 5-1, and multiple second capsules 6 are provided, each partially embedded in one of the second embedding grooves 5-1. Simultaneously, a second rubber sealing ring 5-2 is provided on the edge of the end face of the conical sleeve 5 near the second frustum 2-2. During the process of the conical sleeve 5 and the second frustum 2-2 rupturing the second capsule 6, the second rubber sealing ring 5-2 is pressed between the conical sleeve 5 and the second frustum 2-2.

[0027] Implementation effect: The embedded bolt is usually connected by threading through a through hole in one substrate and then into a countersunk threaded hole in another substrate. During the tightening of the embedded bolt, the conical cap 3 is subjected to the action of the bottom of the countersunk threaded hole, causing the conical cap 3 and the first frustum 2-1 to break through the first capsule 4 and allow the adhesive to flow out. The conical sleeve 5 is subjected to the action of the stepped surface of the countersunk threaded hole, causing the conical sleeve 5 and the second frustum 2-2 to break through the second capsule 6 and allow the adhesive to flow out. At this time, the adhesive solidifies at the threaded joint through the two locations, thereby achieving the function of preventing loosening and improving the strength of the connection.

[0028] The conical sleeve 5 has a countersunk hole 3-1, and the frustum portion has a corresponding insertion hole 2-3 at the countersunk hole 3-1. A connector 7 is provided between the conical sleeve 5 and the frustum portion, passing through the countersunk hole 3-1 and inserting into the insertion hole 2-3, thereby realizing the telescoping of the conical cover 3 and the frustum portion. Simultaneously, during the movement of the conical sleeve 5 towards the first frustum portion 2-1 to its limit, the end of the connector 7 is always located within the countersunk hole 3-1, thus preventing the connector 7 from interfering with the movement of the conical sleeve 5. The conical cover 3 has multiple first embedding grooves 3-2, and multiple first capsules 4 are provided, each partially embedded in one of the first embedding grooves 3-2, thereby enabling the installation of the first capsules 4. When the first capsule 4 is ruptured and the adhesive flows out, the first rubber sealing ring 3-3 causes the adhesive to flow towards the threaded shaft 2, achieving solidification at the thread and providing an anti-loosening effect.

[0029] The conical sleeve 5 has multiple second embedding grooves 5-1. Multiple second capsules 6 are provided and partially embedded in the second embedding grooves 5-1. The second capsules 4 are bonded to the conical sleeve 5 and the second frustum 2-2 using adhesive or hot melt adhesive, thus achieving the installation of the second capsules 6. During the process of the conical sleeve 5 and the second frustum 2-2 rupturing the second capsules 6, the second rubber sealing ring 5-2 is pressed between the conical sleeve 5 and the internal hexagonal cylindrical head 1. This allows the adhesive to flow downwards towards the connection between the threaded shaft 2 and the conical sleeve 5, solidifying at the thread and achieving an anti-loosening effect.

[0030] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A high-strength embedded bolt with adhesive, comprising an internal hexagonal cylindrical head (1) and a threaded shaft (2) disposed on the end of the internal hexagonal cylindrical head (1), characterized in that: The threaded shaft (2) is provided with a first frustum (2-1) at one end away from the internal hexagonal cylindrical head (1). A conical cover (3) is telescopically provided on the frustum. A first capsule (4) with adhesive is provided inside the conical cover (3). During the tightening of the embedded bolt, the conical cover (3) and the first frustum (2-1) rupture the first capsule (4) and cause the adhesive to flow out. A second frustum (2-2) is provided on the end face of the internal hexagonal cylindrical head (1) near the threaded shaft (2). A conical sleeve (5) is fitted on the threaded shaft (2). A second capsule (6) with adhesive is provided inside the conical sleeve (5). During the tightening of the embedded bolt, the conical sleeve (5) and the second frustum (2-2) rupture the second capsule (6) and cause the adhesive to flow out.

2. The adhesive-bonded high-strength embedded bolt according to claim 1, characterized in that: The conical sleeve (5) is provided with a countersunk hole (3-1), and the frustum is provided with a corresponding insertion hole (2-3) at the countersunk hole (3-1). A connector (7) is provided between the conical sleeve (5) and the frustum, passing through the countersunk hole (3-1) and then inserted and pressed against the insertion hole (2-3). The cross-section of the connector (7) is "T" shaped. The conical sleeve (5) can extend and retract along the connector (7). During the process of the conical sleeve (5) moving towards the first frustum (2-1) to the limit state, the end of the connector (7) is located in the countersunk hole (3-1).

3. The adhesive-bonded high-strength embedded bolt according to claim 2, characterized in that: The conical cap (3) is provided with a plurality of first embedding grooves (3-2), and the first capsule (4) is provided with a plurality of first embedding grooves (3-2) respectively.

4. The adhesive-bonded high-strength embedded bolt according to claim 3, characterized in that: The conical cover (3) is provided with a first rubber sealing ring (3-3) on its periphery.

5. A high-strength embedded bolt with adhesive as described in claim 1, characterized in that: The conical sleeve (5) is provided with a plurality of second embedding grooves (5-1), and the second capsule (6) is provided with a plurality of second embedding grooves (5-1) respectively, and the second capsule (6) is bonded between the conical sleeve (5) and the second frustum portion (2-2).

6. A high-strength embedded bolt with adhesive as described in claim 5, characterized in that: A second rubber sealing ring (5-2) is provided on the end face edge of the conical sleeve (5) near the second frustum (2-2). During the process of the conical sleeve (5) and the second frustum (2-2) rupturing the second capsule (6), the second rubber sealing ring (5-2) is pressed between the conical sleeve (5) and the internal hexagonal cylindrical head (1).

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