Bolt with detachable hexagonal screw head

Abstract

The bolt comprises a bolt body, the top end of the bolt body is fixedly connected with a connecting base, the top of the connecting base is in a hollow shape, the hollow position of the top of the connecting base is provided with the bolt head, the front end and the rear end of the connecting base are both fixedly connected with two sets of fixing bases, and the fixing bases are fixedly connected with the bolt body. Connecting grooves are formed in the inner side walls of the fixing seats, a supporting plate is arranged between the fixing seats, and mounting seats are fixedly connected to the two sides of the supporting plate. According to the bolt with the detachable hexagonal screw head, the fixing base, the supporting plate, the fixing block, the connecting groove, the mounting base, a clamping plate and a clamping groove are arranged, the flexibility of the bolt body is improved while pulling and loosening operation is facilitated, and the problems that the screw head structure is small, the screw head and the screw rod cannot be assembled and disassembled generally, the use efficiency is greatly reduced, and the use cost is reduced are solved. And meanwhile, the overall firmness and stability are limited, and the screw head is prone to being damaged after long-term use, so that subsequent use is affected.

Description

Technical Field

[0001] The utility model relates to the technical field of bolts, in particular to a bolt with a detachable hexagonal screw head. Background Art

[0002] A bolt is a common mechanical part, a cylindrical threaded fastener matched with a nut. It consists of a head and a screw. It needs to be matched with a nut to fasten two parts with through holes. Bolts use the physical and mathematical principles of the circular rotation of the inclined surface of an object and the friction force to gradually fasten objects and parts. They are detachable connections while maintaining the stability and safety of the system or machine. They can distribute loads, that is, evenly disperse the pressure of the stressed parts to the surface of the connected parts, thereby reducing the pressure of the stressed parts and reducing the occurrence of fatigue and damage. They can also be used to adjust the position and direction of parts. By increasing or decreasing the tension of the bolt, the position and direction of the parts can be fine-tuned to adapt to different working environments and needs.

[0003] After the bolt and the screw head are fixed together, they are tightened and loosened with a wrench. At present, the screw head structure is small, and it is generally impossible to install and disassemble the screw head and the screw rod, which greatly reduces the use efficiency. At the same time, the overall firmness and stability are limited. After long-term use, the screw head is easily damaged, affecting subsequent use.

[0004] Therefore, a novel bolt with a detachable hexagonal screw head is proposed to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a bolt with a detachable hexagonal screw head, so as to solve the problem proposed in the above-mentioned background technology that the screw head structure is small, the screw head and the screw rod cannot be installed and disassembled generally, which greatly reduces the use efficiency, and at the same time the overall firmness and stability are limited, and the screw head is easily damaged after long-term use, which affects the subsequent use.

[0006] To achieve the above object, the utility model provides the following technical solution: a cleaning device for a vacuum freeze dryer, comprising a bolt body, the top of the bolt body is fixedly connected to a connecting seat, the top of the connecting seat is hollowed out, and a screw head is arranged at the hollowed out portion of the top of the connecting seat;

[0007] The front end and the rear end of the connecting seat are fixedly connected with two groups of fixing seats, the inner side walls of the fixing seats are provided with connecting grooves, a support plate is arranged between the fixing seats, mounting seats are fixedly connected with the two sides of the support plate, a snap-fit ​​connection is formed between the mounting seat and the connecting groove, a snap-fit ​​plate is fixedly connected with the rear end of the support plate, a snap-fit ​​groove is formed between the front end and the rear end of the screw head, and a snap-fit ​​connection is formed between the snap-fit ​​plate and the snap-fit ​​groove.

[0008] Preferably, a fixing block is fixedly connected to the center of the front end of the support plate, the fixing seat is symmetrically distributed about the vertical center line of the bolt body, and the outer wall of the bolt body is provided with threads.

[0009] Preferably, the inner wall of the connecting seat is fixedly connected with a plurality of groups of outer frames, the screw head is hexagonal, the outer wall of the screw head is provided with a plurality of groups of slots, and insert blocks are arranged inside the slots.

[0010] Preferably, a snap-fit ​​connection is formed between the slot and the insert block, a slide groove is provided through the surface of the outer frame, and a sliding connection is formed between the insert block and the slide groove.

[0011] Preferably, a layer of anti-friction pad is provided on the surface of the connecting seat, and a corrosion-resistant reinforcement layer is provided inside the connecting seat.

[0012] Preferably, the thickness of the corrosion-resistant reinforcement layer is greater than the thickness of the anti-friction pad, and the tops of the corrosion-resistant reinforcement layer and the anti-friction pad are both hollow.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the bolt with a detachable hexagonal screw head not only realizes the installation and disassembly functions, realizes the stable support function, but also realizes the protection function;

[0014] (1) By providing a fixing seat, a supporting plate, a fixing block, a connecting groove, a mounting seat, a clamping plate and a clamping groove, the screw head and the bolt body can be disassembled and separated for use by utilizing the clamping structure between the clamping plate and the clamping groove, which facilitates the tightening and loosening operations while improving the flexibility of the bolt body. At the same time, the clamping structure between the connecting groove and the mounting seat can be utilized to strengthen the connectivity between the supporting plate and the fixing seat, ensuring that the screw head will not shake or even fall off during rotation, thereby greatly enhancing the firmness and stability between the screw head and the bolt body;

[0015] (2) By providing an outer frame, a slide groove, an insert block and a slot, and utilizing the engaging structure between the insert block and the slot, multiple groups of insert blocks are sequentially fixed on the outside of the screw head. The screw head can be quickly slid and installed into the hollow part of the connecting seat through the sliding relationship between the slide groove and the insert block, which facilitates the installation operation and does not cause friction damage to the outer wall of the screw head. The stability between the connecting seat and the screw head is improved, and the screw head is prevented from tilting during the installation process, which affects the subsequent use effect, and provides a guide for the movement of the screw head.

[0016] (3) By providing a connecting seat, an anti-friction pad and a corrosion-resistant reinforcement layer, the corrosion-resistant reinforcement layer is used to enhance the supporting force of the connecting seat itself, enhance the overall firmness of the connecting seat, avoid cracking of the connecting seat during use, and at the same time provide all-round corrosion protection for the connecting seat, thereby extending the service life of the connecting seat. The anti-friction pad effectively protects the surface of the connecting seat and the contact surface of the screw head from friction damage, thereby extending the service life of the screw head and providing strong protection for the screw head and the connecting seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the top view structure of the screw head of the utility model;

[0019] Figure 3 This is a schematic diagram of the top view of the outer frame structure of the utility model;

[0020] Figure 4 It is a front view cross-sectional structural schematic diagram of the connecting seat of the utility model.

[0021] In the figure: 1. bolt body; 2. connecting seat; 3. fixing seat; 4. outer frame; 5. screw head; 6. support plate; 7. fixing block; 8. mounting seat; 9. connecting groove; 10. snap-in groove; 11. snap-in plate; 12. slot; 13. slide groove; 14. plug-in block; 15. anti-friction pad; 16. corrosion-resistant reinforcement layer. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1: Please refer to Figure 1-4 A cleaning device for a vacuum freeze dryer comprises a bolt body 1, the top of the bolt body 1 is fixedly connected with a connecting seat 2, the top of the connecting seat 2 is hollowed out, and a screw head 5 is arranged at the hollowed out portion of the top of the connecting seat 2;

[0024] The front and rear ends of the connecting seat 2 are fixedly connected with two sets of fixing seats 3, the inner side walls of the fixing seats 3 are provided with connecting grooves 9, a supporting plate 6 is provided between the fixing seats 3, the two sides of the supporting plate 6 are fixedly connected with mounting seats 8, the mounting seats 8 and the connecting grooves 9 are formed with a snap connection, the rear end of the supporting plate 6 is fixedly connected with a snap-in plate 11, the front and rear ends of the screw head 5 are provided with snap-in grooves 10, the snap-in plate 11 and the snap-in grooves 10 are formed with a snap-in connection;

[0025] A fixing block 7 is fixedly connected to the center of the front end of the support plate 6, and the fixing seat 3 is symmetrically distributed about the vertical center line of the bolt body 1, and the outer wall of the bolt body 1 is provided with threads;

[0026] Specifically, Figure 1 and Figure 2 As shown, when in use, the screw head 5 can be pushed toward the center of the connecting seat 2 through the fixing block 7 until the clamping plate 11 is clamped and fixed in the clamping grooves 10 at both ends of the screw head 5, and at the same time, the mounting seats 8 at both ends of the support plate 6 are clamped and fixed in the connecting grooves 9 on the side walls of the fixing seat 3, thereby enhancing the firmness between the support plate 6 and the fixing seat 3.

[0027] Embodiment 2: The inner wall of the connection seat 2 is fixedly connected with multiple sets of outer frames 4, the screw head 5 is hexagonal, the outer wall of the screw head 5 is provided with multiple sets of slots 12, and the inside of the slots 12 is provided with plug blocks 14;

[0028] The slot 12 and the insert block 14 form a snap connection, a slide groove 13 is provided through the surface of the outer frame 4, and the insert block 14 and the slide groove 13 form a sliding connection;

[0029] Specifically, Figure 1 and Figure 3 As shown, when in use, firstly snap-fit ​​and fix several groups of insert blocks 14 into the slots 12 outside the screw head 5 in sequence, and then use the slide grooves 13 provided on the outer frame 4 to slowly slide the screw head 5 to the hollow part of the connecting seat 2 to provide a stable supporting force for the screw head 5.

[0030] Embodiment 3: A layer of anti-friction pad 15 is provided on the surface of the connection seat 2, and a corrosion-resistant reinforcement layer 16 is provided inside the connection seat 2. The thickness of the corrosion-resistant reinforcement layer 16 is greater than the thickness of the anti-friction pad 15, and the tops of the corrosion-resistant reinforcement layer 16 and the anti-friction pad 15 are both hollow;

[0031] Specifically, Figure 1 and Figure 4As shown, when in use, the corrosion-resistant reinforcement layer 16 is used to enhance the supporting force of the connecting seat 2 itself, strengthen the overall firmness of the connecting seat 2, avoid cracking of the connecting seat 2 during use, and at the same time provide all-round corrosion-resistant protection for the connecting seat 2 to extend the service life of the connecting seat 2. The anti-friction pad 15 effectively protects the surface of the connecting seat 2 and the contact surface of the screw head 5 from friction damage, thereby extending the service life of the screw head 5 and providing strong protection for the screw head 5 and the connecting seat 2.

[0032] Working principle: When the utility model is in use, firstly, several groups of plug blocks 14 are snap-fitted and fixed in the slots 12 outside the screw head 5 in sequence, and the screw head 5 can be pushed toward the center of the connecting seat 2 through the fixing block 7 until the snap-fit ​​plate 11 is snap-fitted and fixed in the snap-fit ​​grooves 10 at both ends of the screw head 5, and at the same time, the mounting seats 8 at both ends of the support plate 6 are snap-fitted and fixed in the connecting grooves 9 on the side walls of the fixing seat 3. During the installation and fixing process, the sliding groove 13 provided in the outer frame 4 is used to slowly slide the screw head 5 to the hollow part of the connecting seat 2, and the corrosion-resistant reinforcement layer 16 is used to enhance the supporting force of the connecting seat 2 itself, enhance the overall firmness of the connecting seat 2, and avoid cracking of the connecting seat 2 during use.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A bolt with a removable hexagonal screw head, comprising a bolt body (1), characterized in that: The top end of the bolt body (1) is fixedly connected to a connecting seat (2), the top of the connecting seat (2) is hollowed out, and a screw head (5) is provided at the hollowed-out portion of the top of the connecting seat (2); The front end and rear end of the connecting seat (2) are fixedly connected to two groups of fixing seats (3), the inner side walls of the fixing seats (3) are provided with connecting grooves (9), a support plate (6) is arranged between the fixing seats (3), the two sides of the support plate (6) are fixedly connected to mounting seats (8), the mounting seats (8) and the connecting grooves (9) are connected in a snap-fitting manner, the rear end of the support plate (6) is fixedly connected to a snap-fitting plate (11), the front end and rear end of the screw head (5) are provided with snap-fitting grooves (10), the snap-fitting plate (11) and the snap-fitting grooves (10) are connected in a snap-fitting manner.

2. A bolt with a removable hexagonal screw head according to claim 1, characterized in that: A fixing block (7) is fixedly connected at the center of the front end of the support plate (6), the fixing seat (3) is symmetrically distributed about the vertical center line of the bolt body (1), and the outer wall of the bolt body (1) is provided with threads.

3. The bolt with a removable hexagonal screw head according to claim 1, characterized in that: The inner wall of the connection seat (2) is fixedly connected to a plurality of groups of outer frames (4); the screw head (5) is hexagonal; the outer wall of the screw head (5) is provided with a plurality of groups of slots (12); and insert blocks (14) are arranged inside the slots (12).

4. A bolt with a removable hexagonal screw head according to claim 3, characterized in that: The slot (12) and the insert block (14) form a snap-fit ​​connection, a sliding groove (13) is provided through the surface of the outer frame (4), and a sliding connection is formed between the insert block (14) and the sliding groove (13).

5. The bolt with a removable hexagonal screw head according to claim 1, characterized in that: A layer of anti-friction pad (15) is provided on the surface of the connection seat (2), and a corrosion-resistant reinforcement layer (16) is provided inside the connection seat (2).

6. The bolt with a removable hexagonal screw head according to claim 5, characterized in that: The thickness of the corrosion-resistant reinforcement layer (16) is greater than the thickness of the anti-friction pad (15), and the top ends of the corrosion-resistant reinforcement layer (16) and the anti-friction pad (15) are both hollow.

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