Hexagonal expansion bolt with high locking force

Abstract

The utility model relates to the technical field of fasteners, and discloses a high-locking-force hexagonal expansion bolt which comprises a sleeve shell, a fixing mechanism comprises two clamping blocks, the exteriors of the two clamping blocks are fixedly connected to the far side of the sleeve shell, a plurality of fixing grooves are formed in the clamping blocks, and the two clamping blocks are fixedly connected to the opposite side of the sleeve shell. And a weight reducing groove is formed in the top, namely the side close to the fixing grooves, of the clamping block, a supporting plate is fixedly connected to the interiors of the multiple fixing grooves, a clamping block is fixedly connected to the top, namely the side close to the fixing grooves, of the clamping block, and a threaded assembly used for fixing is slidably connected to the interior of the sleeve shell. According to the fixing device, the sleeve shell is inserted into the wall body, so that the clamping block is driven to enter, the bevel angle of the edge of the fixing groove is fixed into the wall body under the action of the fixing groove, the sleeve shell can be prevented from loosening during working, the clamping block can be effectively fixed into the wall body, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fastener technical field especially relates to high locking force six prism expansion bolt. BACKGROUND

[0002] High locking force six prism expansion bolt is a kind of expansion bolt with high strength locking capacity, it combines the characteristics of high lock bolt and expansion bolt, provide stronger locking force and higher reliability by special structural design and installation mode, widely used in building, machinery and other fields, for fixing various equipment and components.

[0003] Generally high locking force six prism expansion bolt is by sleeve, bolt, locking nut etc. It is therefore composed when using in the installation process, when locking nut is tightened, the tail of bolt will move outward, push sleeve expansion, so it is fixed tightly on hole wall, to form firm anchoring, bolt enters sleeve by rotation, the taper design of its tail will produce the outward tension with the tightening of nut, make sleeve expansion and closely adhere to substrate hole wall, by tightening locking nut, produce necessary pre-tightening force, make sleeve expansion and fixed in substrate, so as to realize the stable fixation of expansion bolt.

[0004] But part of device in prior art, the support rod in the wall body cannot be well clamped, this is mainly because that the clamping structure design is unreasonable, cannot adapt to the change of different wall body materials and thickness, lead to clamping not tight, fixed not firm and other problems in installation process, for this, high locking force six prism expansion bolt is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides high locking force six prism expansion bolt, aims at improving the problem that part of device in prior art cannot clamp the support rod sleeved in the wall body well.

[0006] In order to realize the above purpose, the utility model adopts the following technical scheme:

[0007] High locking force six prism expansion bolt, including sleeve, the outside of sleeve is provided with fixed mechanism, the outside of fixed mechanism is provided with support mechanism;

[0008] The fixed mechanism includes two clamping blocks, the two clamping blocks are fixedly connected to the opposite sides of the sleeve, the inside of the clamping block is provided with a plurality of fixed grooves, the top of the clamping block, i.e. the side close to the fixed groove, is provided with a lightening groove, a plurality of fixed grooves are fixedly connected with support plates in the inside, the top of the clamping block, i.e. the side close to the fixed groove, is fixedly connected with a clamping block, the inside of the sleeve is slidably connected with a threaded assembly for fixing;

[0009] As a further description of the above technical solutions:

[0010] The threaded assembly comprises a bolt body, the outer part of which is slidingly connected to the inner part of the sleeve shell, and a rotating block is threadedly connected to the bottom of the bolt body;

[0011] As a further description of the above technical solutions:

[0012] The support mechanism comprises a connecting column, the outer part of which is fixedly connected to the inner part of the bolt body, and two rotating columns are rotatably connected to the outer part of the connecting column;

[0013] As a further description of the above technical solutions:

[0014] The outer part of the two rotating columns is fixedly connected to two support plates, and the outer part of the two support plates is on the two sides of the outer part of the connecting column;

[0015] As a further description of the above technical solutions:

[0016] The top of the sleeve shell is slidingly connected to a gasket, and the outer part of the gasket is on the bottom of the connecting column;

[0017] As a further description of the above technical solutions:

[0018] When the bolt body rotates, the rotating block reversely rotates against the bottom of the sleeve shell, so that the rotating block can pass through the inner part of the sleeve shell and make the sleeve shell open;

[0019] As a further description of the above technical solutions:

[0020] The side close to the bottom of the sleeve shell of the clamping block is designed as an arc surface, and the sleeve shell is inserted into the wall to drive the clamping block to slide in.

[0021] The utility model has the advantages of:

[0022] 1. In the utility model, the sleeve shell is inserted into the wall, which drives the clamping block to enter, and the inclined angle of the edge of the fixing groove is fixed in the wall through the action of the fixing groove. The design can prevent the sleeve shell from loosening during work, the clamping block can be effectively fixed in the wall, and the work efficiency is improved.

[0023] 2. In the utility model, when the bolt body enters, the connecting column is driven to slide and drives the two rotating columns rotatably connected thereto to jointly rotate. After rotation, the rotating column continues to rotate outside the connecting column, thereby clamping the object to be fixed. The support plate can be clamped outside the object to achieve good positioning ability. This design makes the high-locking-force six-rib-shaped expansion bolts have higher firmness and reliability in actual use, and can meet the use requirements under different environments and loads. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of the high-locking-force hexagonal expansion bolt proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the fixing groove for the high-locking-force hexagonal expansion bolt proposed in this utility model;

[0026] Figure 3 This is a schematic diagram of the support plate for the high-locking-force hexagonal expansion bolt proposed in this utility model;

[0027] Figure 4 This is a schematic diagram of the connecting column of the high-locking-force hexagonal expansion bolt proposed in this utility model;

[0028] Figure 5 This is a schematic diagram of the support plate for the high-locking-force hexagonal expansion bolt proposed in this utility model.

[0029] Legend:

[0030] 1. Shell; 2. Fixing mechanism; 21. Bolt; 22. Rotating block; 23. Engaging block; 24. Support plate; 25. Weight reduction groove; 26. Locking block; 27. Fixing groove; 3. Supporting mechanism; 31. Connecting column; 32. Rotating column; 33. Shim; 34. Support plate. Detailed Implementation

[0031] 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.

[0032] Reference Figures 2 to 4 An embodiment of this utility model is provided: a high-locking-force hexagonal expansion bolt, including a housing 1, a fixing mechanism 2 provided on the outside of the housing 1, and a supporting mechanism 3 provided on the outside of the fixing mechanism 2;

[0033] The fixing mechanism 2 comprises two clamping blocks 23 which are designed to provide stable support capacity, the outer part of the two clamping blocks 23 is fixedly connected to the far side of the sleeve shell 1, the inner part of the clamping block 23 is provided with a plurality of fixing grooves 27, which can uniformly distribute pressure during expansion and avoid damage, the top of the clamping block 23, i.e. the side close to the fixing groove 27, is provided with a weight-reducing groove 25 which can reduce the weight of the sleeve shell 1, the inner part of the plurality of fixing grooves 27 is fixedly connected with a support plate 24 which can provide good support capacity and prevent the fixing groove 27 from being bent, the top of the clamping block 23, i.e. the side close to the fixing groove 27, is fixedly connected with a clamping block 26 which can be fixed inside the wall, the inner part of the sleeve shell 1 is slidingly connected with a threaded assembly for fixing, the threaded assembly comprises a bolt body 21, the bolt body 21 is rotated and embedded in the surface of the wall to achieve locking effect, the outer part of the bolt body 21 is slidingly connected in the inner part of the sleeve shell 1, the bottom of the bolt body 21 is threadedly connected with a rotating block 22, when the bolt body 21 rotates, the rotating block 22 will rotate in the opposite direction relative to the sleeve shell, thereby pushing the clamping block 23 to open outward, when the bolt body 21 rotates, the rotating block 22 rotates in the opposite direction against the bottom of the sleeve shell 1, so that the rotating block 22 can pass through the inner part of the sleeve shell 1, so that the sleeve shell 1 is opened, the side close to the bottom of the clamping block 23 is designed as a curved surface, and the sleeve shell 1 is inserted into the wall to drive the clamping block 23 to slide in.

[0034] Referring to Figure 1 and Figure 5 , the support mechanism 3 comprises a connecting column 31 which is designed to provide stable support capacity, the outer part of the connecting column 31 is fixedly connected in the inner part of the bolt body 21, the outer part of the connecting column 31 is rotatably connected with two rotating columns 32, the connecting column 31 can provide good rotation for the rotating column 32, the outer part of the two rotating columns 32 is fixedly connected with a support plate 34 which can provide good support for the object to be fixed, the outer part of the two support plates 34 is on the outer part of the two sides of the connecting column 31, the top of the sleeve shell 1 is slidingly connected with a gasket 33 which can provide good buffering capacity, the outer part of the gasket 33 is at the bottom of the connecting column 31.

[0035] Working principle: first through the external tool rotates the sleeve 1 inside the bolt body 21, bolt body 21 and rotating block 22 bottom through threaded connection, in the rotation process, bolt body 21 will drive rotating block 22 reverse rotation occurs. At this time, rotating block 22 overcome the resistance of the sleeve 1 bottom, begin to wear out the sleeve 1 inside, and gradually contact the wall surface. With the continuous advancement of rotating block 22, sleeve 1 is subjected to the action of rotating block 22 and produces the tendency of opening outwards. At the same time, two clamping blocks 23 are driven to expand outward. Each clamping block 23 top near the fixed slot 27 on one side of the design of lightening groove 25, to reduce the overall weight, while a plurality of fixed slot 27 inside is through the support plate 24 to provide stability and strength guarantee, prevent bending or damage in the expansion process. When the sleeve 1 further opens outwards, clamping block 23 gradually slides into the wall surface, its bottom arc design can better wear into the wall of the sleeve 1 more smoothly. At this time, the clamping block 23 top of the clamping block 26 begins to embed in the wall, and through the friction with the wall generates locking force, so as to realize the stable fixation of the expansion bolt. In the process, the sleeve 1 inserted into the wall will drive the clamping block 23 along the fixed slot 27 sliding, finally reach the best expansion state, ensure the connection strength and stability;

[0036] When the bolt body 21 enters, the connecting column 31 is followed by sliding and drives the two rotating columns 32 connected with it to rotate together. After the rotation is completed, the rotating column 32 rotates outside the connecting column 31, so that it can clamp the object to be fixed, and the support plate 34 can be clamped outside the object to achieve good positioning ability. The design makes the high locking force six-rib expansion bolt have higher firmness and reliability in actual use, and can meet the use requirements in different environments and loads.

[0037] Finally, it should be pointed out that: the above described only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application have been described in detail, for those skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included in the protection scope of the present application.

Claims

1. A high-locking-force hexagonal expansion bolt, comprising a housing (1), characterized in that: The outer casing (1) is provided with a fixing mechanism (2), and the outer casing (2) is provided with a supporting mechanism (3); The fixing mechanism (2) includes two locking blocks (23), which are externally fixedly connected to the opposite side of the housing (1). The locking blocks (23) have multiple fixing grooves (27) inside. The top of the locking blocks (23) near the fixing grooves (27) has a weight-reducing groove (25). The multiple fixing grooves (27) are fixedly connected to a support plate (24). The top of the locking blocks (23) near the fixing grooves (27) is fixedly connected to a locking block (26). The housing (1) has a threaded assembly for fixing that is slidably connected inside.

2. The high-locking-force hexagonal expansion bolt according to claim 1, characterized in that: The threaded assembly includes a bolt body (21), the outside of which is slidably connected to the inside of the housing (1), and a rotating block (22) is threadedly connected to the bottom of the bolt body (21).

3. The high-locking-force hexagonal expansion bolt according to claim 2, characterized in that: The support mechanism (3) includes a connecting column (31), which is fixedly connected to the outside of the bolt body (21), and two rotating columns (32) are rotatably connected to the outside of the connecting column (31).

4. The high-locking-force hexagonal expansion bolt according to claim 3, characterized in that: Support plates (34) are fixedly connected to the outside of the two rotating columns (32), and the outside of the two support plates (34) are on both sides of the outside of the connecting column (31).

5. The high-locking-force hexagonal expansion bolt according to claim 4, characterized in that: A gasket (33) is slidably connected to the top of the casing (1), and the outside of the gasket (33) is at the bottom of the connecting column (31).

6. The high-locking-force hexagonal expansion bolt according to claim 2, characterized in that: When the bolt (21) rotates, the rotating block (22) rotates in the opposite direction against the bottom of the sleeve (1), so that the rotating block (22) can pass through the inside of the sleeve (1) and open the sleeve (1).

7. The high-locking-force hexagonal expansion bolt according to claim 1, characterized in that: The locking block (23) has an arc-shaped design on the side near the bottom of the casing (1). The locking block (23) is slid in by inserting the casing (1) into the wall.

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